ffmpeg: Replace av_realloc by av_realloc_f when relevant.
[ffmpeg.git] / ffmpeg.c
1 /*
2  * ffmpeg main
3  * Copyright (c) 2000-2003 Fabrice Bellard
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21
22 #include "config.h"
23 #include <ctype.h>
24 #include <string.h>
25 #include <math.h>
26 #include <stdlib.h>
27 #include <errno.h>
28 #include <signal.h>
29 #include <limits.h>
30 #include <unistd.h>
31 #include "libavformat/avformat.h"
32 #include "libavdevice/avdevice.h"
33 #include "libswscale/swscale.h"
34 #include "libavutil/opt.h"
35 #include "libavcodec/audioconvert.h"
36 #include "libavutil/audioconvert.h"
37 #include "libavutil/parseutils.h"
38 #include "libavutil/samplefmt.h"
39 #include "libavutil/colorspace.h"
40 #include "libavutil/fifo.h"
41 #include "libavutil/intreadwrite.h"
42 #include "libavutil/dict.h"
43 #include "libavutil/mathematics.h"
44 #include "libavutil/pixdesc.h"
45 #include "libavutil/avstring.h"
46 #include "libavutil/libm.h"
47 #include "libavformat/os_support.h"
48 #include "libswresample/swresample.h"
49
50 #include "libavformat/ffm.h" // not public API
51
52 #if CONFIG_AVFILTER
53 # include "libavfilter/avcodec.h"
54 # include "libavfilter/avfilter.h"
55 # include "libavfilter/avfiltergraph.h"
56 # include "libavfilter/buffersink.h"
57 # include "libavfilter/vsrc_buffer.h"
58 #endif
59
60 #if HAVE_SYS_RESOURCE_H
61 #include <sys/types.h>
62 #include <sys/time.h>
63 #include <sys/resource.h>
64 #elif HAVE_GETPROCESSTIMES
65 #include <windows.h>
66 #endif
67 #if HAVE_GETPROCESSMEMORYINFO
68 #include <windows.h>
69 #include <psapi.h>
70 #endif
71
72 #if HAVE_SYS_SELECT_H
73 #include <sys/select.h>
74 #endif
75
76 #if HAVE_TERMIOS_H
77 #include <fcntl.h>
78 #include <sys/ioctl.h>
79 #include <sys/time.h>
80 #include <termios.h>
81 #elif HAVE_KBHIT
82 #include <conio.h>
83 #endif
84 #include <time.h>
85
86 #include "cmdutils.h"
87
88 #include "libavutil/avassert.h"
89
90 const char program_name[] = "ffmpeg";
91 const int program_birth_year = 2000;
92
93 /* select an input stream for an output stream */
94 typedef struct StreamMap {
95     int disabled;           /** 1 is this mapping is disabled by a negative map */
96     int file_index;
97     int stream_index;
98     int sync_file_index;
99     int sync_stream_index;
100 } StreamMap;
101
102 /**
103  * select an input file for an output file
104  */
105 typedef struct MetadataMap {
106     int  file;      ///< file index
107     char type;      ///< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
108     int  index;     ///< stream/chapter/program number
109 } MetadataMap;
110
111 static const OptionDef options[];
112
113 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
114
115 static int frame_bits_per_raw_sample = 0;
116 static int video_discard = 0;
117 static int same_quant = 0;
118 static int do_deinterlace = 0;
119 static int intra_dc_precision = 8;
120 static int loop_input = 0;
121 static int loop_output = AVFMT_NOOUTPUTLOOP;
122 static int qp_hist = 0;
123 static int intra_only = 0;
124 static const char *video_codec_name    = NULL;
125 static const char *audio_codec_name    = NULL;
126 static const char *subtitle_codec_name = NULL;
127
128 static int file_overwrite = 0;
129 static int do_benchmark = 0;
130 static int do_hex_dump = 0;
131 static int do_pkt_dump = 0;
132 static int do_pass = 0;
133 static const char *pass_logfilename_prefix;
134 static int video_sync_method= -1;
135 static int audio_sync_method= 0;
136 static float audio_drift_threshold= 0.1;
137 static int copy_ts= 0;
138 static int copy_tb= 0;
139 static int opt_shortest = 0;
140 static char *vstats_filename;
141 static FILE *vstats_file;
142 static int copy_initial_nonkeyframes = 0;
143
144 static int audio_volume = 256;
145
146 static int exit_on_error = 0;
147 static int using_stdin = 0;
148 static int run_as_daemon  = 0;
149 static int q_pressed = 0;
150 static int64_t video_size = 0;
151 static int64_t audio_size = 0;
152 static int64_t extra_size = 0;
153 static int nb_frames_dup = 0;
154 static int nb_frames_drop = 0;
155 static int input_sync;
156
157 static float dts_delta_threshold = 10;
158
159 static uint8_t *audio_buf;
160 static uint8_t *audio_out;
161 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
162
163 static short *samples;
164 static uint8_t *input_tmp= NULL;
165
166 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
167
168 typedef struct InputStream {
169     int file_index;
170     AVStream *st;
171     int discard;             /* true if stream data should be discarded */
172     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
173     AVCodec *dec;
174
175     int64_t       start;     /* time when read started */
176     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
177                                 is not defined */
178     int64_t       pts;       /* current pts */
179     double ts_scale;
180     int is_start;            /* is 1 at the start and after a discontinuity */
181     int showed_multi_packet_warning;
182     AVDictionary *opts;
183 } InputStream;
184
185 typedef struct InputFile {
186     AVFormatContext *ctx;
187     int eof_reached;      /* true if eof reached */
188     int ist_index;        /* index of first stream in ist_table */
189     int buffer_size;      /* current total buffer size */
190     int64_t ts_offset;
191     int nb_streams;       /* number of stream that avconv is aware of; may be different
192                              from ctx.nb_streams if new streams appear during av_read_frame() */
193     int rate_emu;
194 } InputFile;
195
196 typedef struct OutputStream {
197     int file_index;          /* file index */
198     int index;               /* stream index in the output file */
199     int source_index;        /* InputStream index */
200     AVStream *st;            /* stream in the output file */
201     int encoding_needed;     /* true if encoding needed for this stream */
202     int frame_number;
203     /* input pts and corresponding output pts
204        for A/V sync */
205     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
206     struct InputStream *sync_ist; /* input stream to sync against */
207     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
208     AVBitStreamFilterContext *bitstream_filters;
209     AVCodec *enc;
210     int64_t max_frames;
211
212     /* video only */
213     int video_resample;
214     AVFrame resample_frame;              /* temporary frame for image resampling */
215     struct SwsContext *img_resample_ctx; /* for image resampling */
216     int resample_height;
217     int resample_width;
218     int resample_pix_fmt;
219     AVRational frame_rate;
220     int force_fps;
221     int top_field_first;
222
223     float frame_aspect_ratio;
224
225     /* forced key frames */
226     int64_t *forced_kf_pts;
227     int forced_kf_count;
228     int forced_kf_index;
229
230     /* audio only */
231     int audio_resample;
232     int resample_sample_fmt;
233     int resample_channels;
234     int resample_sample_rate;
235     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
236     FILE *logfile;
237
238     struct SwrContext *swr;
239
240 #if CONFIG_AVFILTER
241     AVFilterContext *output_video_filter;
242     AVFilterContext *input_video_filter;
243     AVFilterBufferRef *picref;
244     char *avfilter;
245     AVFilterGraph *graph;
246 #endif
247
248    int sws_flags;
249    AVDictionary *opts;
250    int is_past_recording_time;
251 } OutputStream;
252
253
254 #if HAVE_TERMIOS_H
255
256 /* init terminal so that we can grab keys */
257 static struct termios oldtty;
258 #endif
259
260 typedef struct OutputFile {
261     AVFormatContext *ctx;
262     AVDictionary *opts;
263     int ost_index;       /* index of the first stream in output_streams */
264     int64_t recording_time; /* desired length of the resulting file in microseconds */
265     int64_t start_time;     /* start time in microseconds */
266     uint64_t limit_filesize;
267 } OutputFile;
268
269 static InputStream *input_streams = NULL;
270 static int         nb_input_streams = 0;
271 static InputFile   *input_files   = NULL;
272 static int         nb_input_files   = 0;
273
274 static OutputStream *output_streams = NULL;
275 static int        nb_output_streams = 0;
276 static OutputFile   *output_files   = NULL;
277 static int        nb_output_files   = 0;
278
279 typedef struct OptionsContext {
280     /* input/output options */
281     int64_t start_time;
282     const char *format;
283
284     SpecifierOpt *codec_names;
285     int        nb_codec_names;
286     SpecifierOpt *audio_channels;
287     int        nb_audio_channels;
288     SpecifierOpt *audio_sample_rate;
289     int        nb_audio_sample_rate;
290     SpecifierOpt *frame_rates;
291     int        nb_frame_rates;
292     SpecifierOpt *frame_sizes;
293     int        nb_frame_sizes;
294     SpecifierOpt *frame_pix_fmts;
295     int        nb_frame_pix_fmts;
296
297     /* input options */
298     int64_t input_ts_offset;
299     int rate_emu;
300
301     SpecifierOpt *ts_scale;
302     int        nb_ts_scale;
303
304     /* output options */
305     StreamMap *stream_maps;
306     int     nb_stream_maps;
307     /* first item specifies output metadata, second is input */
308     MetadataMap (*meta_data_maps)[2];
309     int nb_meta_data_maps;
310     int metadata_global_manual;
311     int metadata_streams_manual;
312     int metadata_chapters_manual;
313
314     int chapters_input_file;
315
316     int64_t recording_time;
317     uint64_t limit_filesize;
318     float mux_preload;
319     float mux_max_delay;
320
321     int video_disable;
322     int audio_disable;
323     int subtitle_disable;
324     int data_disable;
325
326     /* indexed by output file stream index */
327     int   *streamid_map;
328     int nb_streamid_map;
329
330     SpecifierOpt *metadata;
331     int        nb_metadata;
332     SpecifierOpt *max_frames;
333     int        nb_max_frames;
334     SpecifierOpt *bitstream_filters;
335     int        nb_bitstream_filters;
336     SpecifierOpt *codec_tags;
337     int        nb_codec_tags;
338     SpecifierOpt *sample_fmts;
339     int        nb_sample_fmts;
340     SpecifierOpt *qscale;
341     int        nb_qscale;
342     SpecifierOpt *forced_key_frames;
343     int        nb_forced_key_frames;
344     SpecifierOpt *force_fps;
345     int        nb_force_fps;
346     SpecifierOpt *frame_aspect_ratios;
347     int        nb_frame_aspect_ratios;
348     SpecifierOpt *rc_overrides;
349     int        nb_rc_overrides;
350     SpecifierOpt *intra_matrices;
351     int        nb_intra_matrices;
352     SpecifierOpt *inter_matrices;
353     int        nb_inter_matrices;
354     SpecifierOpt *top_field_first;
355     int        nb_top_field_first;
356 #if CONFIG_AVFILTER
357     SpecifierOpt *filters;
358     int        nb_filters;
359 #endif
360 } OptionsContext;
361
362 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
363 {\
364     int i, ret;\
365     for (i = 0; i < o->nb_ ## name; i++) {\
366         char *spec = o->name[i].specifier;\
367         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
368             outvar = o->name[i].u.type;\
369         else if (ret < 0)\
370             exit_program(1);\
371     }\
372 }
373
374 static void reset_options(OptionsContext *o, int is_input)
375 {
376     const OptionDef *po = options;
377     OptionsContext bak= *o;
378
379     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
380     while (po->name) {
381         void *dst = (uint8_t*)o + po->u.off;
382
383         if (po->flags & OPT_SPEC) {
384             SpecifierOpt **so = dst;
385             int i, *count = (int*)(so + 1);
386             for (i = 0; i < *count; i++) {
387                 av_freep(&(*so)[i].specifier);
388                 if (po->flags & OPT_STRING)
389                     av_freep(&(*so)[i].u.str);
390             }
391             av_freep(so);
392             *count = 0;
393         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
394             av_freep(dst);
395         po++;
396     }
397
398     av_freep(&o->stream_maps);
399     av_freep(&o->meta_data_maps);
400     av_freep(&o->streamid_map);
401
402     memset(o, 0, sizeof(*o));
403
404     if(is_input) o->recording_time = bak.recording_time;
405     else         o->recording_time = INT64_MAX;
406     o->mux_preload    = 0.5;
407     o->mux_max_delay  = 0.7;
408     o->limit_filesize = UINT64_MAX;
409     o->chapters_input_file = INT_MAX;
410
411     uninit_opts();
412     init_opts();
413 }
414
415 #if CONFIG_AVFILTER
416
417 static int configure_video_filters(InputStream *ist, OutputStream *ost)
418 {
419     AVFilterContext *last_filter, *filter;
420     /** filter graph containing all filters including input & output */
421     AVCodecContext *codec = ost->st->codec;
422     AVCodecContext *icodec = ist->st->codec;
423     enum PixelFormat pix_fmts[] = { codec->pix_fmt, PIX_FMT_NONE };
424     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
425     AVRational sample_aspect_ratio;
426     char args[255];
427     int ret;
428
429     ost->graph = avfilter_graph_alloc();
430
431     if (ist->st->sample_aspect_ratio.num){
432         sample_aspect_ratio = ist->st->sample_aspect_ratio;
433     }else
434         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
435
436     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
437              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
438              sample_aspect_ratio.num, sample_aspect_ratio.den);
439
440     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
441                                        "src", args, NULL, ost->graph);
442     if (ret < 0)
443         return ret;
444 #if FF_API_OLD_VSINK_API
445     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
446                                        "out", NULL, pix_fmts, ost->graph);
447 #else
448     buffersink_params->pixel_fmts = pix_fmts;
449     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
450                                        "out", NULL, buffersink_params, ost->graph);
451 #endif
452     av_freep(&buffersink_params);
453     if (ret < 0)
454         return ret;
455     last_filter = ost->input_video_filter;
456
457     if (codec->width  != icodec->width || codec->height != icodec->height) {
458         snprintf(args, 255, "%d:%d:flags=0x%X",
459                  codec->width,
460                  codec->height,
461                  ost->sws_flags);
462         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
463                                                 NULL, args, NULL, ost->graph)) < 0)
464             return ret;
465         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
466             return ret;
467         last_filter = filter;
468     }
469
470     snprintf(args, sizeof(args), "flags=0x%X", ost->sws_flags);
471     ost->graph->scale_sws_opts = av_strdup(args);
472
473     if (ost->avfilter) {
474         AVFilterInOut *outputs = avfilter_inout_alloc();
475         AVFilterInOut *inputs  = avfilter_inout_alloc();
476
477         outputs->name    = av_strdup("in");
478         outputs->filter_ctx = last_filter;
479         outputs->pad_idx = 0;
480         outputs->next    = NULL;
481
482         inputs->name    = av_strdup("out");
483         inputs->filter_ctx = ost->output_video_filter;
484         inputs->pad_idx = 0;
485         inputs->next    = NULL;
486
487         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, &inputs, &outputs, NULL)) < 0)
488             return ret;
489         av_freep(&ost->avfilter);
490     } else {
491         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
492             return ret;
493     }
494
495     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
496         return ret;
497
498     codec->width  = ost->output_video_filter->inputs[0]->w;
499     codec->height = ost->output_video_filter->inputs[0]->h;
500     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
501         ost->frame_aspect_ratio ? // overridden by the -aspect cli option
502         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
503         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
504
505     return 0;
506 }
507 #endif /* CONFIG_AVFILTER */
508
509 static void term_exit(void)
510 {
511     av_log(NULL, AV_LOG_QUIET, "%s", "");
512 #if HAVE_TERMIOS_H
513     if(!run_as_daemon)
514         tcsetattr (0, TCSANOW, &oldtty);
515 #endif
516 }
517
518 static volatile int received_sigterm = 0;
519
520 static void sigterm_handler(int sig)
521 {
522     received_sigterm = sig;
523     q_pressed++;
524     term_exit();
525 }
526
527 static void term_init(void)
528 {
529 #if HAVE_TERMIOS_H
530     if(!run_as_daemon){
531     struct termios tty;
532
533     tcgetattr (0, &tty);
534     oldtty = tty;
535     atexit(term_exit);
536
537     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
538                           |INLCR|IGNCR|ICRNL|IXON);
539     tty.c_oflag |= OPOST;
540     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
541     tty.c_cflag &= ~(CSIZE|PARENB);
542     tty.c_cflag |= CS8;
543     tty.c_cc[VMIN] = 1;
544     tty.c_cc[VTIME] = 0;
545
546     tcsetattr (0, TCSANOW, &tty);
547     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
548     }
549 #endif
550
551     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
552     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
553 #ifdef SIGXCPU
554     signal(SIGXCPU, sigterm_handler);
555 #endif
556 }
557
558 /* read a key without blocking */
559 static int read_key(void)
560 {
561     unsigned char ch;
562 #if HAVE_TERMIOS_H
563     int n = 1;
564     struct timeval tv;
565     fd_set rfds;
566
567     if(run_as_daemon)
568         return -1;
569
570     FD_ZERO(&rfds);
571     FD_SET(0, &rfds);
572     tv.tv_sec = 0;
573     tv.tv_usec = 0;
574     n = select(1, &rfds, NULL, NULL, &tv);
575     if (n > 0) {
576         n = read(0, &ch, 1);
577         if (n == 1)
578             return ch;
579
580         return n;
581     }
582 #elif HAVE_KBHIT
583 #    if HAVE_PEEKNAMEDPIPE
584     static int is_pipe;
585     static HANDLE input_handle;
586     DWORD dw, nchars;
587     if(!input_handle){
588         input_handle = GetStdHandle(STD_INPUT_HANDLE);
589         is_pipe = !GetConsoleMode(input_handle, &dw);
590     }
591
592     if (stdin->_cnt > 0) {
593         read(0, &ch, 1);
594         return ch;
595     }
596     if (is_pipe) {
597         /* When running under a GUI, you will end here. */
598         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
599             return -1;
600         //Read it
601         if(nchars != 0) {
602             read(0, &ch, 1);
603             return ch;
604         }else{
605             return -1;
606         }
607     }
608 #    endif
609     if(kbhit())
610         return(getch());
611 #endif
612     return -1;
613 }
614
615 static int decode_interrupt_cb(void)
616 {
617     q_pressed += read_key() == 'q';
618     return q_pressed > 1;
619 }
620
621 void exit_program(int ret)
622 {
623     int i;
624
625     /* close files */
626     for(i=0;i<nb_output_files;i++) {
627         AVFormatContext *s = output_files[i].ctx;
628         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
629             avio_close(s->pb);
630         avformat_free_context(s);
631         av_dict_free(&output_files[i].opts);
632     }
633     for(i=0;i<nb_input_files;i++) {
634         av_close_input_file(input_files[i].ctx);
635     }
636     for (i = 0; i < nb_input_streams; i++)
637         av_dict_free(&input_streams[i].opts);
638
639     if (vstats_file)
640         fclose(vstats_file);
641     av_free(vstats_filename);
642
643     av_freep(&input_streams);
644     av_freep(&input_files);
645     av_freep(&output_streams);
646     av_freep(&output_files);
647
648     uninit_opts();
649     av_free(audio_buf);
650     av_free(audio_out);
651     allocated_audio_buf_size= allocated_audio_out_size= 0;
652     av_free(samples);
653
654 #if CONFIG_AVFILTER
655     avfilter_uninit();
656 #endif
657
658     av_freep(&input_tmp);
659
660     if (received_sigterm) {
661         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
662                (int) received_sigterm);
663         exit (255);
664     }
665
666     exit(ret); /* not all OS-es handle main() return value */
667 }
668
669 static void assert_avoptions(AVDictionary *m)
670 {
671     AVDictionaryEntry *t;
672     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
673         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
674         exit_program(1);
675     }
676 }
677
678 static void assert_codec_experimental(AVCodecContext *c, int encoder)
679 {
680     const char *codec_string = encoder ? "encoder" : "decoder";
681     AVCodec *codec;
682     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
683         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
684         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
685                 "results.\nAdd '-strict experimental' if you want to use it.\n",
686                 codec_string, c->codec->name);
687         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
688         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
689             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
690                    codec_string, codec->name);
691         exit_program(1);
692     }
693 }
694
695 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
696 {
697     if(codec && codec->sample_fmts){
698         const enum AVSampleFormat *p= codec->sample_fmts;
699         for(; *p!=-1; p++){
700             if(*p == st->codec->sample_fmt)
701                 break;
702         }
703         if (*p == -1) {
704             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
705                 av_log(NULL, AV_LOG_ERROR, "Convertion will not be lossless'\n");
706             if(av_get_sample_fmt_name(st->codec->sample_fmt))
707             av_log(NULL, AV_LOG_WARNING,
708                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
709                    av_get_sample_fmt_name(st->codec->sample_fmt),
710                    codec->name,
711                    av_get_sample_fmt_name(codec->sample_fmts[0]));
712             st->codec->sample_fmt = codec->sample_fmts[0];
713         }
714     }
715 }
716
717 static void choose_sample_rate(AVStream *st, AVCodec *codec)
718 {
719     if(codec && codec->supported_samplerates){
720         const int *p= codec->supported_samplerates;
721         int best=0;
722         int best_dist=INT_MAX;
723         for(; *p; p++){
724             int dist= abs(st->codec->sample_rate - *p);
725             if(dist < best_dist){
726                 best_dist= dist;
727                 best= *p;
728             }
729         }
730         if(best_dist){
731             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
732         }
733         st->codec->sample_rate= best;
734     }
735 }
736
737 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
738 {
739     if(codec && codec->pix_fmts){
740         const enum PixelFormat *p= codec->pix_fmts;
741         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
742             if(st->codec->codec_id==CODEC_ID_MJPEG){
743                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
744             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
745                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE};
746             }
747         }
748         for(; *p!=-1; p++){
749             if(*p == st->codec->pix_fmt)
750                 break;
751         }
752         if (*p == -1) {
753             if(st->codec->pix_fmt != PIX_FMT_NONE)
754                 av_log(NULL, AV_LOG_WARNING,
755                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
756                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
757                         codec->name,
758                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
759             st->codec->pix_fmt = codec->pix_fmts[0];
760         }
761     }
762 }
763
764 static double get_sync_ipts(const OutputStream *ost)
765 {
766     const InputStream *ist = ost->sync_ist;
767     OutputFile *of = &output_files[ost->file_index];
768     return (double)(ist->pts - of->start_time)/AV_TIME_BASE;
769 }
770
771 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc)
772 {
773     int ret;
774
775     while(bsfc){
776         AVPacket new_pkt= *pkt;
777         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
778                                           &new_pkt.data, &new_pkt.size,
779                                           pkt->data, pkt->size,
780                                           pkt->flags & AV_PKT_FLAG_KEY);
781         if(a>0){
782             av_free_packet(pkt);
783             new_pkt.destruct= av_destruct_packet;
784         } else if(a<0){
785             av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
786                    bsfc->filter->name, pkt->stream_index,
787                    avctx->codec ? avctx->codec->name : "copy");
788             print_error("", a);
789             if (exit_on_error)
790                 exit_program(1);
791         }
792         *pkt= new_pkt;
793
794         bsfc= bsfc->next;
795     }
796
797     ret= av_interleaved_write_frame(s, pkt);
798     if(ret < 0){
799         print_error("av_interleaved_write_frame()", ret);
800         exit_program(1);
801     }
802 }
803
804 static void do_audio_out(AVFormatContext *s,
805                          OutputStream *ost,
806                          InputStream *ist,
807                          unsigned char *buf, int size)
808 {
809     uint8_t *buftmp;
810     int64_t audio_out_size, audio_buf_size;
811     int64_t allocated_for_size= size;
812
813     int size_out, frame_bytes, ret, resample_changed;
814     AVCodecContext *enc= ost->st->codec;
815     AVCodecContext *dec= ist->st->codec;
816     int osize = av_get_bytes_per_sample(enc->sample_fmt);
817     int isize = av_get_bytes_per_sample(dec->sample_fmt);
818     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
819
820 need_realloc:
821     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
822     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
823     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
824     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
825     audio_buf_size*= osize*enc->channels;
826
827     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
828     if(coded_bps > 8*osize)
829         audio_out_size= audio_out_size * coded_bps / (8*osize);
830     audio_out_size += FF_MIN_BUFFER_SIZE;
831
832     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
833         av_log(NULL, AV_LOG_FATAL, "Buffer sizes too large\n");
834         exit_program(1);
835     }
836
837     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
838     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
839     if (!audio_buf || !audio_out){
840         av_log(NULL, AV_LOG_FATAL, "Out of memory in do_audio_out\n");
841         exit_program(1);
842     }
843
844     if (enc->channels != dec->channels
845      || enc->sample_fmt != dec->sample_fmt)
846         ost->audio_resample = 1;
847
848     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
849                        ost->resample_channels    != dec->channels   ||
850                        ost->resample_sample_rate != dec->sample_rate;
851
852     if ((ost->audio_resample && !ost->swr) || resample_changed) {
853         if (resample_changed) {
854             av_log(NULL, AV_LOG_INFO, "Input stream #%d.%d frame changed from rate:%d fmt:%s ch:%d to rate:%d fmt:%s ch:%d\n",
855                    ist->file_index, ist->st->index,
856                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
857                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
858             ost->resample_sample_fmt  = dec->sample_fmt;
859             ost->resample_channels    = dec->channels;
860             ost->resample_sample_rate = dec->sample_rate;
861             swr_free(&ost->swr);
862         }
863         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
864         if (audio_sync_method <= 1 &&
865             ost->resample_sample_fmt  == enc->sample_fmt &&
866             ost->resample_channels    == enc->channels   &&
867             ost->resample_sample_rate == enc->sample_rate) {
868             //ost->swr = NULL;
869             ost->audio_resample = 0;
870         } else {
871             ost->swr = swr_alloc2(ost->swr,
872                                   enc->channel_layout, enc->sample_fmt, enc->sample_rate,
873                                   dec->channel_layout, dec->sample_fmt, dec->sample_rate,
874                                   0, NULL);
875             av_set_int(ost->swr, "ich", dec->channels);
876             av_set_int(ost->swr, "och", enc->channels);
877             if(audio_sync_method>1) av_set_int(ost->swr, "flags", SWR_FLAG_RESAMPLE);
878             if(ost->swr && swr_init(ost->swr) < 0){
879                 av_log(NULL, AV_LOG_FATAL, "swr_init() failed\n");
880                 swr_free(&ost->swr);
881             }
882
883             if (!ost->swr) {
884                 av_log(NULL, AV_LOG_FATAL, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
885                         dec->channels, dec->sample_rate,
886                         enc->channels, enc->sample_rate);
887                 exit_program(1);
888             }
889         }
890     }
891
892     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
893
894     if(audio_sync_method){
895         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
896                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
897         double idelta= delta*dec->sample_rate / enc->sample_rate;
898         int byte_delta= ((int)idelta)*2*dec->channels;
899
900         //FIXME resample delay
901         if(fabs(delta) > 50){
902             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
903                 if(byte_delta < 0){
904                     byte_delta= FFMAX(byte_delta, -size);
905                     size += byte_delta;
906                     buf  -= byte_delta;
907                     av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n", (int)-delta);
908                     if(!size)
909                         return;
910                     ist->is_start=0;
911                 }else{
912                     input_tmp= av_realloc(input_tmp, byte_delta + size);
913
914                     if(byte_delta > allocated_for_size - size){
915                         allocated_for_size= byte_delta + (int64_t)size;
916                         goto need_realloc;
917                     }
918                     ist->is_start=0;
919
920                     memset(input_tmp, 0, byte_delta);
921                     memcpy(input_tmp + byte_delta, buf, size);
922                     buf= input_tmp;
923                     size += byte_delta;
924                     av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", (int)delta);
925                 }
926             }else if(audio_sync_method>1){
927                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
928                 av_assert0(ost->audio_resample);
929                 av_log(NULL, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n",
930                        delta, comp, enc->sample_rate);
931 //                fprintf(stderr, "drift:%f len:%d opts:%"PRId64" ipts:%"PRId64" fifo:%d\n", delta, -1, ost->sync_opts, (int64_t)(get_sync_ipts(ost) * enc->sample_rate), av_fifo_size(ost->fifo)/(ost->st->codec->channels * 2));
932                 swr_compensate(ost->swr, comp, enc->sample_rate);
933             }
934         }
935     }else
936         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
937                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
938
939     if (ost->audio_resample) {
940         buftmp = audio_buf;
941         size_out = swr_convert(ost->swr, (      uint8_t*[]){buftmp}, audio_buf_size / (enc->channels * osize),
942                                          (const uint8_t*[]){buf   }, size / (dec->channels * isize));
943         size_out = size_out * enc->channels * osize;
944     } else {
945         buftmp = buf;
946         size_out = size;
947     }
948
949     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
950
951     /* now encode as many frames as possible */
952     if (enc->frame_size > 1) {
953         /* output resampled raw samples */
954         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
955             av_log(NULL, AV_LOG_FATAL, "av_fifo_realloc2() failed\n");
956             exit_program(1);
957         }
958         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
959
960         frame_bytes = enc->frame_size * osize * enc->channels;
961
962         while (av_fifo_size(ost->fifo) >= frame_bytes) {
963             AVPacket pkt;
964             av_init_packet(&pkt);
965
966             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
967
968             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
969
970             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
971                                        (short *)audio_buf);
972             if (ret < 0) {
973                 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
974                 exit_program(1);
975             }
976             audio_size += ret;
977             pkt.stream_index= ost->index;
978             pkt.data= audio_out;
979             pkt.size= ret;
980             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
981                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
982             pkt.flags |= AV_PKT_FLAG_KEY;
983             write_frame(s, &pkt, enc, ost->bitstream_filters);
984
985             ost->sync_opts += enc->frame_size;
986         }
987     } else {
988         AVPacket pkt;
989         av_init_packet(&pkt);
990
991         ost->sync_opts += size_out / (osize * enc->channels);
992
993         /* output a pcm frame */
994         /* determine the size of the coded buffer */
995         size_out /= osize;
996         if (coded_bps)
997             size_out = size_out*coded_bps/8;
998
999         if(size_out > audio_out_size){
1000             av_log(NULL, AV_LOG_FATAL, "Internal error, buffer size too small\n");
1001             exit_program(1);
1002         }
1003
1004         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1005         ret = avcodec_encode_audio(enc, audio_out, size_out,
1006                                    (short *)buftmp);
1007         if (ret < 0) {
1008             av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1009             exit_program(1);
1010         }
1011         audio_size += ret;
1012         pkt.stream_index= ost->index;
1013         pkt.data= audio_out;
1014         pkt.size= ret;
1015         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1016             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1017         pkt.flags |= AV_PKT_FLAG_KEY;
1018         write_frame(s, &pkt, enc, ost->bitstream_filters);
1019     }
1020 }
1021
1022 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1023 {
1024     AVCodecContext *dec;
1025     AVPicture *picture2;
1026     AVPicture picture_tmp;
1027     uint8_t *buf = 0;
1028
1029     dec = ist->st->codec;
1030
1031     /* deinterlace : must be done before any resize */
1032     if (do_deinterlace) {
1033         int size;
1034
1035         /* create temporary picture */
1036         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1037         buf = av_malloc(size);
1038         if (!buf)
1039             return;
1040
1041         picture2 = &picture_tmp;
1042         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1043
1044         if(avpicture_deinterlace(picture2, picture,
1045                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1046             /* if error, do not deinterlace */
1047             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1048             av_free(buf);
1049             buf = NULL;
1050             picture2 = picture;
1051         }
1052     } else {
1053         picture2 = picture;
1054     }
1055
1056     if (picture != picture2)
1057         *picture = *picture2;
1058     *bufp = buf;
1059 }
1060
1061 static void do_subtitle_out(AVFormatContext *s,
1062                             OutputStream *ost,
1063                             InputStream *ist,
1064                             AVSubtitle *sub,
1065                             int64_t pts)
1066 {
1067     static uint8_t *subtitle_out = NULL;
1068     int subtitle_out_max_size = 1024 * 1024;
1069     int subtitle_out_size, nb, i;
1070     AVCodecContext *enc;
1071     AVPacket pkt;
1072
1073     if (pts == AV_NOPTS_VALUE) {
1074         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1075         if (exit_on_error)
1076             exit_program(1);
1077         return;
1078     }
1079
1080     enc = ost->st->codec;
1081
1082     if (!subtitle_out) {
1083         subtitle_out = av_malloc(subtitle_out_max_size);
1084     }
1085
1086     /* Note: DVB subtitle need one packet to draw them and one other
1087        packet to clear them */
1088     /* XXX: signal it in the codec context ? */
1089     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1090         nb = 2;
1091     else
1092         nb = 1;
1093
1094     for(i = 0; i < nb; i++) {
1095         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1096         // start_display_time is required to be 0
1097         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1098         sub->end_display_time -= sub->start_display_time;
1099         sub->start_display_time = 0;
1100         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1101                                                     subtitle_out_max_size, sub);
1102         if (subtitle_out_size < 0) {
1103             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1104             exit_program(1);
1105         }
1106
1107         av_init_packet(&pkt);
1108         pkt.stream_index = ost->index;
1109         pkt.data = subtitle_out;
1110         pkt.size = subtitle_out_size;
1111         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1112         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1113             /* XXX: the pts correction is handled here. Maybe handling
1114                it in the codec would be better */
1115             if (i == 0)
1116                 pkt.pts += 90 * sub->start_display_time;
1117             else
1118                 pkt.pts += 90 * sub->end_display_time;
1119         }
1120         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1121     }
1122 }
1123
1124 static int bit_buffer_size= 1024*256;
1125 static uint8_t *bit_buffer= NULL;
1126
1127 static void do_video_resample(OutputStream *ost,
1128                               InputStream *ist,
1129                               AVFrame *in_picture,
1130                               AVFrame **out_picture)
1131 {
1132 #if CONFIG_AVFILTER
1133     *out_picture = in_picture;
1134 #else
1135     AVCodecContext *dec = ist->st->codec;
1136     AVCodecContext *enc = ost->st->codec;
1137     int resample_changed = ost->resample_width   != dec->width  ||
1138                            ost->resample_height  != dec->height ||
1139                            ost->resample_pix_fmt != dec->pix_fmt;
1140
1141     *out_picture = in_picture;
1142     if (resample_changed) {
1143         av_log(NULL, AV_LOG_INFO,
1144                "Input stream #%d.%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1145                ist->file_index, ist->st->index,
1146                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1147                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1148         ost->resample_width   = dec->width;
1149         ost->resample_height  = dec->height;
1150         ost->resample_pix_fmt = dec->pix_fmt;
1151     }
1152
1153     ost->video_resample = dec->width   != enc->width  ||
1154                           dec->height  != enc->height ||
1155                           dec->pix_fmt != enc->pix_fmt;
1156
1157     if (ost->video_resample) {
1158         *out_picture = &ost->resample_frame;
1159         if (!ost->img_resample_ctx || resample_changed) {
1160             /* initialize the destination picture */
1161             if (!ost->resample_frame.data[0]) {
1162                 avcodec_get_frame_defaults(&ost->resample_frame);
1163                 if (avpicture_alloc((AVPicture *)&ost->resample_frame, enc->pix_fmt,
1164                                     enc->width, enc->height)) {
1165                     av_log(NULL, AV_LOG_FATAL, "Cannot allocate temp picture, check pix fmt\n");
1166                     exit_program(1);
1167                 }
1168             }
1169             /* initialize a new scaler context */
1170             sws_freeContext(ost->img_resample_ctx);
1171             ost->img_resample_ctx = sws_getContext(dec->width, dec->height, dec->pix_fmt,
1172                                                    enc->width, enc->height, enc->pix_fmt,
1173                                                    ost->sws_flags, NULL, NULL, NULL);
1174             if (ost->img_resample_ctx == NULL) {
1175                 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
1176                 exit_program(1);
1177             }
1178         }
1179         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1180               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1181     }
1182 #endif
1183 }
1184
1185
1186 static void do_video_out(AVFormatContext *s,
1187                          OutputStream *ost,
1188                          InputStream *ist,
1189                          AVFrame *in_picture,
1190                          int *frame_size, float quality)
1191 {
1192     int nb_frames, i, ret, format_video_sync;
1193     AVFrame *final_picture;
1194     AVCodecContext *enc;
1195     double sync_ipts;
1196     double duration = 0;
1197
1198     enc = ost->st->codec;
1199
1200     if (ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE) {
1201         duration = FFMAX(av_q2d(ist->st->time_base), av_q2d(ist->st->codec->time_base));
1202         if(ist->st->avg_frame_rate.num)
1203             duration= FFMAX(duration, 1/av_q2d(ist->st->avg_frame_rate));
1204
1205         duration /= av_q2d(enc->time_base);
1206     }
1207
1208     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1209
1210     /* by default, we output a single frame */
1211     nb_frames = 1;
1212
1213     *frame_size = 0;
1214
1215     format_video_sync = video_sync_method;
1216     if (format_video_sync < 0)
1217         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? 2 : 1;
1218
1219     if (format_video_sync) {
1220         double vdelta = sync_ipts - ost->sync_opts + duration;
1221         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1222         if (vdelta < -1.1)
1223             nb_frames = 0;
1224         else if (format_video_sync == 2) {
1225             if(vdelta<=-0.6){
1226                 nb_frames=0;
1227             }else if(vdelta>0.6)
1228                 ost->sync_opts= lrintf(sync_ipts);
1229         }else if (vdelta > 1.1)
1230             nb_frames = lrintf(vdelta);
1231 //fprintf(stderr, "vdelta:%f, ost->sync_opts:%"PRId64", ost->sync_ipts:%f nb_frames:%d\n", vdelta, ost->sync_opts, get_sync_ipts(ost), nb_frames);
1232         if (nb_frames == 0){
1233             ++nb_frames_drop;
1234             av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1235         }else if (nb_frames > 1) {
1236             nb_frames_dup += nb_frames - 1;
1237             av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames-1);
1238         }
1239     }else
1240         ost->sync_opts= lrintf(sync_ipts);
1241
1242     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1243     if (nb_frames <= 0)
1244         return;
1245
1246     do_video_resample(ost, ist, in_picture, &final_picture);
1247
1248     /* duplicates frame if needed */
1249     for(i=0;i<nb_frames;i++) {
1250         AVPacket pkt;
1251         av_init_packet(&pkt);
1252         pkt.stream_index= ost->index;
1253
1254         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1255             /* raw pictures are written as AVPicture structure to
1256                avoid any copies. We support temporarily the older
1257                method. */
1258             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1259             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1260             pkt.data= (uint8_t *)final_picture;
1261             pkt.size=  sizeof(AVPicture);
1262             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1263             pkt.flags |= AV_PKT_FLAG_KEY;
1264
1265             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1266         } else {
1267             AVFrame big_picture;
1268
1269             big_picture= *final_picture;
1270             /* better than nothing: use input picture interlaced
1271                settings */
1272             big_picture.interlaced_frame = in_picture->interlaced_frame;
1273             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1274                 if (ost->top_field_first == -1)
1275                     big_picture.top_field_first = in_picture->top_field_first;
1276                 else
1277                     big_picture.top_field_first = !!ost->top_field_first;
1278             }
1279
1280             /* handles same_quant here. This is not correct because it may
1281                not be a global option */
1282             big_picture.quality = quality;
1283             if (!enc->me_threshold)
1284                 big_picture.pict_type = 0;
1285 //            big_picture.pts = AV_NOPTS_VALUE;
1286             big_picture.pts= ost->sync_opts;
1287 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1288 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1289             if (ost->forced_kf_index < ost->forced_kf_count &&
1290                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1291                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1292                 ost->forced_kf_index++;
1293             }
1294             ret = avcodec_encode_video(enc,
1295                                        bit_buffer, bit_buffer_size,
1296                                        &big_picture);
1297             if (ret < 0) {
1298                 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1299                 exit_program(1);
1300             }
1301
1302             if(ret>0){
1303                 pkt.data= bit_buffer;
1304                 pkt.size= ret;
1305                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1306                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1307 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1308    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1309    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1310
1311                 if(enc->coded_frame->key_frame)
1312                     pkt.flags |= AV_PKT_FLAG_KEY;
1313                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1314                 *frame_size = ret;
1315                 video_size += ret;
1316                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1317                 //        enc->frame_number-1, ret, enc->pict_type);
1318                 /* if two pass, output log */
1319                 if (ost->logfile && enc->stats_out) {
1320                     fprintf(ost->logfile, "%s", enc->stats_out);
1321                 }
1322             }
1323         }
1324         ost->sync_opts++;
1325         ost->frame_number++;
1326     }
1327 }
1328
1329 static double psnr(double d)
1330 {
1331     return -10.0*log(d)/log(10.0);
1332 }
1333
1334 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1335                            int frame_size)
1336 {
1337     AVCodecContext *enc;
1338     int frame_number;
1339     double ti1, bitrate, avg_bitrate;
1340
1341     /* this is executed just the first time do_video_stats is called */
1342     if (!vstats_file) {
1343         vstats_file = fopen(vstats_filename, "w");
1344         if (!vstats_file) {
1345             perror("fopen");
1346             exit_program(1);
1347         }
1348     }
1349
1350     enc = ost->st->codec;
1351     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1352         frame_number = ost->frame_number;
1353         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1354         if (enc->flags&CODEC_FLAG_PSNR)
1355             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1356
1357         fprintf(vstats_file,"f_size= %6d ", frame_size);
1358         /* compute pts value */
1359         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1360         if (ti1 < 0.01)
1361             ti1 = 0.01;
1362
1363         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1364         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1365         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1366             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1367         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1368     }
1369 }
1370
1371 static void print_report(OutputFile *output_files,
1372                          OutputStream *ost_table, int nb_ostreams,
1373                          int is_last_report, int64_t timer_start)
1374 {
1375     char buf[1024];
1376     OutputStream *ost;
1377     AVFormatContext *oc;
1378     int64_t total_size;
1379     AVCodecContext *enc;
1380     int frame_number, vid, i;
1381     double bitrate;
1382     int64_t pts = INT64_MAX;
1383     static int64_t last_time = -1;
1384     static int qp_histogram[52];
1385     int hours, mins, secs, us;
1386
1387     if (!is_last_report) {
1388         int64_t cur_time;
1389         /* display the report every 0.5 seconds */
1390         cur_time = av_gettime();
1391         if (last_time == -1) {
1392             last_time = cur_time;
1393             return;
1394         }
1395         if ((cur_time - last_time) < 500000)
1396             return;
1397         last_time = cur_time;
1398     }
1399
1400
1401     oc = output_files[0].ctx;
1402
1403     total_size = avio_size(oc->pb);
1404     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1405         total_size= avio_tell(oc->pb);
1406
1407     buf[0] = '\0';
1408     vid = 0;
1409     for(i=0;i<nb_ostreams;i++) {
1410         float q = -1;
1411         ost = &ost_table[i];
1412         enc = ost->st->codec;
1413         if (!ost->st->stream_copy && enc->coded_frame)
1414             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1415         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1416             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1417         }
1418         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1419             float t = (av_gettime()-timer_start) / 1000000.0;
1420
1421             frame_number = ost->frame_number;
1422             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1423                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1424             if(is_last_report)
1425                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1426             if(qp_hist){
1427                 int j;
1428                 int qp = lrintf(q);
1429                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1430                     qp_histogram[qp]++;
1431                 for(j=0; j<32; j++)
1432                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1433             }
1434             if (enc->flags&CODEC_FLAG_PSNR){
1435                 int j;
1436                 double error, error_sum=0;
1437                 double scale, scale_sum=0;
1438                 char type[3]= {'Y','U','V'};
1439                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1440                 for(j=0; j<3; j++){
1441                     if(is_last_report){
1442                         error= enc->error[j];
1443                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1444                     }else{
1445                         error= enc->coded_frame->error[j];
1446                         scale= enc->width*enc->height*255.0*255.0;
1447                     }
1448                     if(j) scale/=4;
1449                     error_sum += error;
1450                     scale_sum += scale;
1451                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1452                 }
1453                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1454             }
1455             vid = 1;
1456         }
1457         /* compute min output value */
1458         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
1459                                       ost->st->time_base, AV_TIME_BASE_Q));
1460     }
1461
1462     secs = pts / AV_TIME_BASE;
1463     us = pts % AV_TIME_BASE;
1464     mins = secs / 60;
1465     secs %= 60;
1466     hours = mins / 60;
1467     mins %= 60;
1468
1469     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1470
1471     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1472              "size=%8.0fkB time=", total_size / 1024.0);
1473     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1474              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1475              (100 * us) / AV_TIME_BASE);
1476     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1477              "bitrate=%6.1fkbits/s", bitrate);
1478
1479     if (nb_frames_dup || nb_frames_drop)
1480         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1481                 nb_frames_dup, nb_frames_drop);
1482
1483     av_log(NULL, is_last_report ? AV_LOG_WARNING : AV_LOG_INFO, "%s    \r", buf);
1484
1485     fflush(stderr);
1486
1487     if (is_last_report) {
1488         int64_t raw= audio_size + video_size + extra_size;
1489         av_log(NULL, AV_LOG_INFO, "\n");
1490         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1491                video_size/1024.0,
1492                audio_size/1024.0,
1493                extra_size/1024.0,
1494                100.0*(total_size - raw)/raw
1495         );
1496     }
1497 }
1498
1499 static void generate_silence(uint8_t *buf, enum AVSampleFormat sample_fmt, size_t size)
1500 {
1501     int fill_char = 0x00;
1502     if (sample_fmt == AV_SAMPLE_FMT_U8)
1503         fill_char = 0x80;
1504     memset(buf, fill_char, size);
1505 }
1506
1507 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1508 {
1509     int i, ret;
1510
1511     for (i = 0; i < nb_ostreams; i++) {
1512         OutputStream   *ost = &ost_table[i];
1513         AVCodecContext *enc = ost->st->codec;
1514         AVFormatContext *os = output_files[ost->file_index].ctx;
1515
1516         if (!ost->encoding_needed)
1517             continue;
1518
1519         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1520             continue;
1521         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1522             continue;
1523
1524         for(;;) {
1525             AVPacket pkt;
1526             int fifo_bytes;
1527             av_init_packet(&pkt);
1528             pkt.stream_index= ost->index;
1529
1530             switch (ost->st->codec->codec_type) {
1531             case AVMEDIA_TYPE_AUDIO:
1532                 fifo_bytes = av_fifo_size(ost->fifo);
1533                 ret = 0;
1534                 /* encode any samples remaining in fifo */
1535                 if (fifo_bytes > 0) {
1536                     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1537                     int fs_tmp = enc->frame_size;
1538
1539                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1540                     if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1541                         enc->frame_size = fifo_bytes / (osize * enc->channels);
1542                     } else { /* pad */
1543                         int frame_bytes = enc->frame_size*osize*enc->channels;
1544                         if (allocated_audio_buf_size < frame_bytes)
1545                             exit_program(1);
1546                         generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1547                     }
1548
1549                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1550                     pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1551                                               ost->st->time_base.num, enc->sample_rate);
1552                     enc->frame_size = fs_tmp;
1553                 }
1554                 if (ret <= 0) {
1555                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1556                 }
1557                 if (ret < 0) {
1558                     av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1559                     exit_program(1);
1560                 }
1561                 audio_size += ret;
1562                 pkt.flags |= AV_PKT_FLAG_KEY;
1563                 break;
1564             case AVMEDIA_TYPE_VIDEO:
1565                 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1566                 if (ret < 0) {
1567                     av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1568                     exit_program(1);
1569                 }
1570                 video_size += ret;
1571                 if(enc->coded_frame && enc->coded_frame->key_frame)
1572                     pkt.flags |= AV_PKT_FLAG_KEY;
1573                 if (ost->logfile && enc->stats_out) {
1574                     fprintf(ost->logfile, "%s", enc->stats_out);
1575                 }
1576                 break;
1577             default:
1578                 ret=-1;
1579             }
1580
1581             if (ret <= 0)
1582                 break;
1583             pkt.data = bit_buffer;
1584             pkt.size = ret;
1585             if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1586                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1587             write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1588         }
1589     }
1590 }
1591
1592 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1593 static int output_packet(InputStream *ist, int ist_index,
1594                          OutputStream *ost_table, int nb_ostreams,
1595                          const AVPacket *pkt)
1596 {
1597     AVFormatContext *os;
1598     OutputStream *ost;
1599     int ret, i;
1600     int got_output;
1601     void *buffer_to_free = NULL;
1602     static unsigned int samples_size= 0;
1603     AVSubtitle subtitle, *subtitle_to_free;
1604     int64_t pkt_pts = AV_NOPTS_VALUE;
1605 #if CONFIG_AVFILTER
1606     int frame_available;
1607 #endif
1608     float quality;
1609
1610     AVPacket avpkt;
1611     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1612
1613     if(ist->next_pts == AV_NOPTS_VALUE)
1614         ist->next_pts= ist->pts;
1615
1616     if (pkt == NULL) {
1617         /* EOF handling */
1618         av_init_packet(&avpkt);
1619         avpkt.data = NULL;
1620         avpkt.size = 0;
1621         goto handle_eof;
1622     } else {
1623         avpkt = *pkt;
1624     }
1625
1626     if(pkt->dts != AV_NOPTS_VALUE)
1627         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1628     if(pkt->pts != AV_NOPTS_VALUE)
1629         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1630
1631     //while we have more to decode or while the decoder did output something on EOF
1632     while (avpkt.size > 0 || (!pkt && got_output)) {
1633         uint8_t *data_buf, *decoded_data_buf;
1634         int data_size, decoded_data_size;
1635         AVFrame *decoded_frame, *filtered_frame;
1636     handle_eof:
1637         ist->pts= ist->next_pts;
1638
1639         if(avpkt.size && avpkt.size != pkt->size)
1640             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1641                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1642             ist->showed_multi_packet_warning=1;
1643
1644         /* decode the packet if needed */
1645         decoded_frame    = filtered_frame = NULL;
1646         decoded_data_buf = NULL; /* fail safe */
1647         decoded_data_size= 0;
1648         data_buf  = avpkt.data;
1649         data_size = avpkt.size;
1650         subtitle_to_free = NULL;
1651         if (ist->decoding_needed) {
1652             switch(ist->st->codec->codec_type) {
1653             case AVMEDIA_TYPE_AUDIO:{
1654                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1655                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1656                     av_free(samples);
1657                     samples= av_malloc(samples_size);
1658                 }
1659                 decoded_data_size= samples_size;
1660                     /* XXX: could avoid copy if PCM 16 bits with same
1661                        endianness as CPU */
1662                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1663                                             &avpkt);
1664                 if (ret < 0)
1665                     return ret;
1666                 avpkt.data += ret;
1667                 avpkt.size -= ret;
1668                 data_size   = ret;
1669                 got_output  = decoded_data_size > 0;
1670                 /* Some bug in mpeg audio decoder gives */
1671                 /* decoded_data_size < 0, it seems they are overflows */
1672                 if (!got_output) {
1673                     /* no audio frame */
1674                     continue;
1675                 }
1676                 decoded_data_buf = (uint8_t *)samples;
1677                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1678                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1679                 break;}
1680             case AVMEDIA_TYPE_VIDEO:
1681                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1682                     if (!(decoded_frame = avcodec_alloc_frame()))
1683                         return AVERROR(ENOMEM);
1684                     avpkt.pts = pkt_pts;
1685                     avpkt.dts = ist->pts;
1686                     pkt_pts = AV_NOPTS_VALUE;
1687
1688                     ret = avcodec_decode_video2(ist->st->codec,
1689                                                 decoded_frame, &got_output, &avpkt);
1690                     quality = same_quant ? decoded_frame->quality : 0;
1691                     if (ret < 0)
1692                         goto fail;
1693                     if (!got_output) {
1694                         /* no picture yet */
1695                         av_freep(&decoded_frame);
1696                         goto discard_packet;
1697                     }
1698                     ist->next_pts = ist->pts = decoded_frame->best_effort_timestamp;
1699                     if (ist->st->codec->time_base.num != 0) {
1700                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1701                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1702                                           ist->st->codec->time_base.num * ticks) /
1703                             ist->st->codec->time_base.den;
1704                     }
1705                     avpkt.size = 0;
1706                     buffer_to_free = NULL;
1707                     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1708                     break;
1709             case AVMEDIA_TYPE_SUBTITLE:
1710                 ret = avcodec_decode_subtitle2(ist->st->codec,
1711                                                &subtitle, &got_output, &avpkt);
1712                 if (ret < 0)
1713                     return ret;
1714                 if (!got_output) {
1715                     goto discard_packet;
1716                 }
1717                 subtitle_to_free = &subtitle;
1718                 avpkt.size = 0;
1719                 break;
1720             default:
1721                 return -1;
1722             }
1723         } else {
1724             switch(ist->st->codec->codec_type) {
1725             case AVMEDIA_TYPE_AUDIO:
1726                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1727                     ist->st->codec->sample_rate;
1728                 break;
1729             case AVMEDIA_TYPE_VIDEO:
1730                 if (ist->st->codec->time_base.num != 0) {
1731                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1732                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1733                                       ist->st->codec->time_base.num * ticks) /
1734                         ist->st->codec->time_base.den;
1735                 }
1736                 break;
1737             }
1738             avpkt.size = 0;
1739         }
1740
1741 #if CONFIG_AVFILTER
1742         if(ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
1743         for(i=0;i<nb_ostreams;i++) {
1744             OutputFile *of = &output_files[ost_table[i].file_index];
1745             if (of->start_time == 0 || ist->pts >= of->start_time) {
1746                 ost = &ost_table[i];
1747                 if (ost->input_video_filter && ost->source_index == ist_index) {
1748                     if (!decoded_frame->sample_aspect_ratio.num)
1749                         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1750                     decoded_frame->pts = ist->pts;
1751
1752                     av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame, AV_VSRC_BUF_FLAG_OVERWRITE);
1753                 }
1754             }
1755         }
1756 #endif
1757
1758         // preprocess audio (volume)
1759         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1760             if (audio_volume != 256) {
1761                 short *volp;
1762                 volp = samples;
1763                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1764                     int v = ((*volp) * audio_volume + 128) >> 8;
1765                     *volp++ = av_clip_int16(v);
1766                 }
1767             }
1768         }
1769
1770         /* frame rate emulation */
1771         if (input_files[ist->file_index].rate_emu) {
1772             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1773             int64_t now = av_gettime() - ist->start;
1774             if (pts > now)
1775                 usleep(pts - now);
1776         }
1777         /* if output time reached then transcode raw format,
1778            encode packets and output them */
1779         for (i = 0; i < nb_ostreams; i++) {
1780             OutputFile *of = &output_files[ost_table[i].file_index];
1781             int frame_size;
1782
1783             ost = &ost_table[i];
1784             if (ost->source_index != ist_index)
1785                 continue;
1786
1787             if (of->start_time && ist->pts < of->start_time)
1788                 continue;
1789
1790             if (of->recording_time != INT64_MAX &&
1791                 av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1792                               (AVRational){1, 1000000}) >= 0) {
1793                 ost->is_past_recording_time = 1;
1794                 continue;
1795             }
1796
1797 #if CONFIG_AVFILTER
1798             frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1799                 !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1800             while (frame_available) {
1801                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter) {
1802                     AVRational ist_pts_tb = ost->output_video_filter->inputs[0]->time_base;
1803                     if (av_buffersink_get_buffer_ref(ost->output_video_filter, &ost->picref, 0) < 0)
1804                         goto cont;
1805                     if (!filtered_frame && !(filtered_frame = avcodec_alloc_frame())) {
1806                         ret = AVERROR(ENOMEM);
1807                         goto fail;
1808                     }
1809                     *filtered_frame= *decoded_frame; //for me_threshold
1810                     if (ost->picref) {
1811                         avfilter_fill_frame_from_video_buffer_ref(filtered_frame, ost->picref);
1812                         ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1813                     }
1814                 }
1815 #else
1816                 filtered_frame = decoded_frame;
1817 #endif
1818                 os = output_files[ost->file_index].ctx;
1819
1820                 /* set the input output pts pairs */
1821                 //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
1822
1823                 if (ost->encoding_needed) {
1824                     av_assert0(ist->decoding_needed);
1825                     switch(ost->st->codec->codec_type) {
1826                     case AVMEDIA_TYPE_AUDIO:
1827                         do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1828                         break;
1829                     case AVMEDIA_TYPE_VIDEO:
1830 #if CONFIG_AVFILTER
1831                         if (ost->picref->video && !ost->frame_aspect_ratio)
1832                             ost->st->codec->sample_aspect_ratio = ost->picref->video->sample_aspect_ratio;
1833 #endif
1834                         do_video_out(os, ost, ist, filtered_frame, &frame_size,
1835                                      same_quant ? quality : ost->st->codec->global_quality);
1836                         if (vstats_filename && frame_size)
1837                             do_video_stats(os, ost, frame_size);
1838                         break;
1839                     case AVMEDIA_TYPE_SUBTITLE:
1840                         do_subtitle_out(os, ost, ist, &subtitle,
1841                                         pkt->pts);
1842                         break;
1843                     default:
1844                         abort();
1845                     }
1846                 } else {
1847                     AVPicture pict;
1848                     AVPacket opkt;
1849                     int64_t ost_tb_start_time= av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1850                     av_init_packet(&opkt);
1851
1852                     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1853 #if !CONFIG_AVFILTER
1854                         continue;
1855 #else
1856                         goto cont;
1857 #endif
1858
1859                     /* no reencoding needed : output the packet directly */
1860                     /* force the input stream PTS */
1861
1862                     if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1863                         audio_size += data_size;
1864                     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1865                         video_size += data_size;
1866                         ost->sync_opts++;
1867                     }
1868
1869                     opkt.stream_index= ost->index;
1870                     if(pkt->pts != AV_NOPTS_VALUE)
1871                         opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1872                     else
1873                         opkt.pts= AV_NOPTS_VALUE;
1874
1875                     if (pkt->dts == AV_NOPTS_VALUE)
1876                         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1877                     else
1878                         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1879                     opkt.dts -= ost_tb_start_time;
1880
1881                     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1882                     opkt.flags= pkt->flags;
1883
1884                     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1885                     if(   ost->st->codec->codec_id != CODEC_ID_H264
1886                        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1887                        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1888                        ) {
1889                         if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1890                             opkt.destruct= av_destruct_packet;
1891                     } else {
1892                         opkt.data = data_buf;
1893                         opkt.size = data_size;
1894                     }
1895
1896                     if (os->oformat->flags & AVFMT_RAWPICTURE) {
1897                         /* store AVPicture in AVPacket, as expected by the output format */
1898                         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1899                         opkt.data = (uint8_t *)&pict;
1900                         opkt.size = sizeof(AVPicture);
1901                         opkt.flags |= AV_PKT_FLAG_KEY;
1902                     }
1903                     write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1904                     ost->st->codec->frame_number++;
1905                     ost->frame_number++;
1906                     av_free_packet(&opkt);
1907                 }
1908 #if CONFIG_AVFILTER
1909                 cont:
1910                 frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1911                                    ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1912                 avfilter_unref_buffer(ost->picref);
1913             }
1914             av_freep(&filtered_frame);
1915 #endif
1916         }
1917
1918 fail:
1919         av_free(buffer_to_free);
1920         /* XXX: allocate the subtitles in the codec ? */
1921         if (subtitle_to_free) {
1922             avsubtitle_free(subtitle_to_free);
1923             subtitle_to_free = NULL;
1924         }
1925         av_freep(&decoded_frame);
1926         if (ret < 0)
1927             return ret;
1928     }
1929  discard_packet:
1930
1931     return 0;
1932 }
1933
1934 static void print_sdp(OutputFile *output_files, int n)
1935 {
1936     char sdp[2048];
1937     int i;
1938     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
1939
1940     if (!avc)
1941         exit_program(1);
1942     for (i = 0; i < n; i++)
1943         avc[i] = output_files[i].ctx;
1944
1945     av_sdp_create(avc, n, sdp, sizeof(sdp));
1946     printf("SDP:\n%s\n", sdp);
1947     fflush(stdout);
1948     av_freep(&avc);
1949 }
1950
1951 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
1952                              char *error, int error_len)
1953 {
1954     InputStream *ist = &input_streams[ist_index];
1955     if (ist->decoding_needed) {
1956         AVCodec *codec = ist->dec;
1957         if (!codec) {
1958             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d.%d",
1959                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1960             return AVERROR(EINVAL);
1961         }
1962         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
1963             snprintf(error, error_len, "Error while opening decoder for input stream #%d.%d",
1964                     ist->file_index, ist->st->index);
1965             return AVERROR(EINVAL);
1966         }
1967         assert_codec_experimental(ist->st->codec, 0);
1968         assert_avoptions(ist->opts);
1969     }
1970
1971     ist->pts = ist->st->avg_frame_rate.num ? - ist->st->codec->has_b_frames*AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;
1972     ist->next_pts = AV_NOPTS_VALUE;
1973     ist->is_start = 1;
1974
1975     return 0;
1976 }
1977
1978 static int transcode_init(OutputFile *output_files, int nb_output_files,
1979                           InputFile  *input_files,  int nb_input_files)
1980 {
1981     int ret = 0, i, j, k;
1982     AVFormatContext *os;
1983     AVCodecContext *codec, *icodec;
1984     OutputStream *ost;
1985     InputStream *ist;
1986     char error[1024];
1987     int want_sdp = 1;
1988
1989     /* init framerate emulation */
1990     for (i = 0; i < nb_input_files; i++) {
1991         InputFile *ifile = &input_files[i];
1992         if (ifile->rate_emu)
1993             for (j = 0; j < ifile->nb_streams; j++)
1994                 input_streams[j + ifile->ist_index].start = av_gettime();
1995     }
1996
1997     /* output stream init */
1998     for(i=0;i<nb_output_files;i++) {
1999         os = output_files[i].ctx;
2000         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
2001             av_dump_format(os, i, os->filename, 1);
2002             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2003             return AVERROR(EINVAL);
2004         }
2005     }
2006
2007     /* for each output stream, we compute the right encoding parameters */
2008     for (i = 0; i < nb_output_streams; i++) {
2009         ost = &output_streams[i];
2010         os = output_files[ost->file_index].ctx;
2011         ist = &input_streams[ost->source_index];
2012
2013         codec = ost->st->codec;
2014         icodec = ist->st->codec;
2015
2016         ost->st->disposition = ist->st->disposition;
2017         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2018         codec->chroma_sample_location = icodec->chroma_sample_location;
2019
2020         if (ost->st->stream_copy) {
2021             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2022
2023             if (extra_size > INT_MAX) {
2024                 return AVERROR(EINVAL);
2025             }
2026
2027             /* if stream_copy is selected, no need to decode or encode */
2028             codec->codec_id = icodec->codec_id;
2029             codec->codec_type = icodec->codec_type;
2030
2031             if(!codec->codec_tag){
2032                 if(   !os->oformat->codec_tag
2033                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2034                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2035                     codec->codec_tag = icodec->codec_tag;
2036             }
2037
2038             codec->bit_rate = icodec->bit_rate;
2039             codec->rc_max_rate    = icodec->rc_max_rate;
2040             codec->rc_buffer_size = icodec->rc_buffer_size;
2041             codec->extradata= av_mallocz(extra_size);
2042             if (!codec->extradata) {
2043                 return AVERROR(ENOMEM);
2044             }
2045             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2046             codec->extradata_size= icodec->extradata_size;
2047
2048             codec->time_base = ist->st->time_base;
2049             if(!strcmp(os->oformat->name, "avi")) {
2050                 if(!copy_tb && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base) && av_q2d(ist->st->time_base) < 1.0/500){
2051                     codec->time_base = icodec->time_base;
2052                     codec->time_base.num *= icodec->ticks_per_frame;
2053                     codec->time_base.den *= 2;
2054                 }
2055             } else if(!(os->oformat->flags & AVFMT_VARIABLE_FPS)) {
2056                 if(!copy_tb && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base) && av_q2d(ist->st->time_base) < 1.0/500){
2057                     codec->time_base = icodec->time_base;
2058                     codec->time_base.num *= icodec->ticks_per_frame;
2059                 }
2060             }
2061             av_reduce(&codec->time_base.num, &codec->time_base.den,
2062                         codec->time_base.num, codec->time_base.den, INT_MAX);
2063
2064             switch(codec->codec_type) {
2065             case AVMEDIA_TYPE_AUDIO:
2066                 if(audio_volume != 256) {
2067                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2068                     exit_program(1);
2069                 }
2070                 codec->channel_layout = icodec->channel_layout;
2071                 codec->sample_rate = icodec->sample_rate;
2072                 codec->channels = icodec->channels;
2073                 codec->frame_size = icodec->frame_size;
2074                 codec->audio_service_type = icodec->audio_service_type;
2075                 codec->block_align= icodec->block_align;
2076                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2077                     codec->block_align= 0;
2078                 if(codec->codec_id == CODEC_ID_AC3)
2079                     codec->block_align= 0;
2080                 break;
2081             case AVMEDIA_TYPE_VIDEO:
2082                 codec->pix_fmt = icodec->pix_fmt;
2083                 codec->width = icodec->width;
2084                 codec->height = icodec->height;
2085                 codec->has_b_frames = icodec->has_b_frames;
2086                 if (!codec->sample_aspect_ratio.num) {
2087                     codec->sample_aspect_ratio =
2088                     ost->st->sample_aspect_ratio =
2089                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2090                         ist->st->codec->sample_aspect_ratio.num ?
2091                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2092                 }
2093                 break;
2094             case AVMEDIA_TYPE_SUBTITLE:
2095                 codec->width = icodec->width;
2096                 codec->height = icodec->height;
2097                 break;
2098             case AVMEDIA_TYPE_DATA:
2099             case AVMEDIA_TYPE_ATTACHMENT:
2100                 break;
2101             default:
2102                 abort();
2103             }
2104         } else {
2105             if (!ost->enc)
2106                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2107             switch(codec->codec_type) {
2108             case AVMEDIA_TYPE_AUDIO:
2109                 ost->fifo= av_fifo_alloc(1024);
2110                 if (!ost->fifo) {
2111                     return AVERROR(ENOMEM);
2112                 }
2113                 if (!codec->sample_rate) {
2114                     codec->sample_rate = icodec->sample_rate;
2115                 }
2116                 choose_sample_rate(ost->st, ost->enc);
2117                 codec->time_base = (AVRational){1, codec->sample_rate};
2118                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2119                     codec->sample_fmt = icodec->sample_fmt;
2120                 choose_sample_fmt(ost->st, ost->enc);
2121                 if (!codec->channels) {
2122                     codec->channels = icodec->channels;
2123                     codec->channel_layout = icodec->channel_layout;
2124                 }
2125                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2126                     codec->channel_layout = 0;
2127                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2128                 ost->audio_resample |=    codec->sample_fmt     != icodec->sample_fmt
2129                                        || codec->channel_layout != icodec->channel_layout;
2130                 icodec->request_channels = codec->channels;
2131                 ist->decoding_needed = 1;
2132                 ost->encoding_needed = 1;
2133                 ost->resample_sample_fmt  = icodec->sample_fmt;
2134                 ost->resample_sample_rate = icodec->sample_rate;
2135                 ost->resample_channels    = icodec->channels;
2136                 break;
2137             case AVMEDIA_TYPE_VIDEO:
2138                 if (codec->pix_fmt == PIX_FMT_NONE)
2139                     codec->pix_fmt = icodec->pix_fmt;
2140                 choose_pixel_fmt(ost->st, ost->enc);
2141
2142                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2143                     av_log(NULL, AV_LOG_FATAL, "Video pixel format is unknown, stream cannot be encoded\n");
2144                     exit_program(1);
2145                 }
2146
2147                 if (!codec->width || !codec->height) {
2148                     codec->width  = icodec->width;
2149                     codec->height = icodec->height;
2150                 }
2151
2152                 ost->video_resample = codec->width   != icodec->width  ||
2153                                       codec->height  != icodec->height ||
2154                                       codec->pix_fmt != icodec->pix_fmt;
2155                 if (ost->video_resample) {
2156                     codec->bits_per_raw_sample= frame_bits_per_raw_sample;
2157                 }
2158
2159                 ost->resample_height = icodec->height;
2160                 ost->resample_width  = icodec->width;
2161                 ost->resample_pix_fmt= icodec->pix_fmt;
2162                 ost->encoding_needed = 1;
2163                 ist->decoding_needed = 1;
2164
2165                 if (!ost->frame_rate.num)
2166                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2167                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2168                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2169                     ost->frame_rate = ost->enc->supported_framerates[idx];
2170                 }
2171                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2172                 if(   av_q2d(codec->time_base) < 0.001 && video_sync_method
2173                    && (video_sync_method==1 || (video_sync_method<0 && !(os->oformat->flags & AVFMT_VARIABLE_FPS)))){
2174                     av_log(os, AV_LOG_WARNING, "Frame rate very high for a muxer not effciciently supporting it.\n"
2175                                                "Please consider specifiying a lower framerate, a different muxer or -vsync 2\n");
2176                 }
2177
2178 #if CONFIG_AVFILTER
2179                 if (configure_video_filters(ist, ost)) {
2180                     av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2181                     exit(1);
2182                 }
2183 #endif
2184                 break;
2185             case AVMEDIA_TYPE_SUBTITLE:
2186                 ost->encoding_needed = 1;
2187                 ist->decoding_needed = 1;
2188                 break;
2189             default:
2190                 abort();
2191                 break;
2192             }
2193             /* two pass mode */
2194             if (ost->encoding_needed && codec->codec_id != CODEC_ID_H264 &&
2195                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2196                 char logfilename[1024];
2197                 FILE *f;
2198
2199                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2200                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2201                          i);
2202                 if (codec->flags & CODEC_FLAG_PASS1) {
2203                     f = fopen(logfilename, "wb");
2204                     if (!f) {
2205                         av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2206                                logfilename, strerror(errno));
2207                         exit_program(1);
2208                     }
2209                     ost->logfile = f;
2210                 } else {
2211                     char  *logbuffer;
2212                     size_t logbuffer_size;
2213                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2214                         av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2215                                logfilename);
2216                         exit_program(1);
2217                     }
2218                     codec->stats_in = logbuffer;
2219                 }
2220             }
2221         }
2222         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2223             /* maximum video buffer size is 6-bytes per pixel, plus DPX header size (1664)*/
2224             int size= codec->width * codec->height;
2225             bit_buffer_size= FFMAX(bit_buffer_size, 7*size + 10000);
2226         }
2227     }
2228
2229     if (!bit_buffer)
2230         bit_buffer = av_malloc(bit_buffer_size);
2231     if (!bit_buffer) {
2232         av_log(NULL, AV_LOG_ERROR, "Cannot allocate %d bytes output buffer\n",
2233                bit_buffer_size);
2234         return AVERROR(ENOMEM);
2235     }
2236
2237     /* open each encoder */
2238     for (i = 0; i < nb_output_streams; i++) {
2239         ost = &output_streams[i];
2240         if (ost->encoding_needed) {
2241             AVCodec *codec = ost->enc;
2242             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2243             if (!codec) {
2244                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d.%d",
2245                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2246                 ret = AVERROR(EINVAL);
2247                 goto dump_format;
2248             }
2249             if (dec->subtitle_header) {
2250                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2251                 if (!ost->st->codec->subtitle_header) {
2252                     ret = AVERROR(ENOMEM);
2253                     goto dump_format;
2254                 }
2255                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2256                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2257             }
2258             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2259                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2260                         ost->file_index, ost->index);
2261                 ret = AVERROR(EINVAL);
2262                 goto dump_format;
2263             }
2264             assert_codec_experimental(ost->st->codec, 1);
2265             assert_avoptions(ost->opts);
2266             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2267                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2268                                              "It takes bits/s as argument, not kbits/s\n");
2269             extra_size += ost->st->codec->extradata_size;
2270
2271             if (ost->st->codec->me_threshold)
2272                 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2273         }
2274     }
2275
2276     /* init input streams */
2277     for (i = 0; i < nb_input_streams; i++)
2278         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2279             goto dump_format;
2280
2281     /* discard unused programs */
2282     for (i = 0; i < nb_input_files; i++) {
2283         InputFile *ifile = &input_files[i];
2284         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2285             AVProgram *p = ifile->ctx->programs[j];
2286             int discard  = AVDISCARD_ALL;
2287
2288             for (k = 0; k < p->nb_stream_indexes; k++)
2289                 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2290                     discard = AVDISCARD_DEFAULT;
2291                     break;
2292                 }
2293             p->discard = discard;
2294         }
2295     }
2296
2297     /* open files and write file headers */
2298     for (i = 0; i < nb_output_files; i++) {
2299         os = output_files[i].ctx;
2300         if (avformat_write_header(os, &output_files[i].opts) < 0) {
2301             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2302             ret = AVERROR(EINVAL);
2303             goto dump_format;
2304         }
2305 //        assert_avoptions(output_files[i].opts);
2306         if (strcmp(os->oformat->name, "rtp")) {
2307             want_sdp = 0;
2308         }
2309     }
2310
2311  dump_format:
2312     /* dump the file output parameters - cannot be done before in case
2313        of stream copy */
2314     for(i=0;i<nb_output_files;i++) {
2315         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2316     }
2317
2318     /* dump the stream mapping */
2319     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2320     for (i = 0; i < nb_output_streams; i++) {
2321         ost = &output_streams[i];
2322         av_log(NULL, AV_LOG_INFO, "  Stream #%d.%d -> #%d.%d",
2323                input_streams[ost->source_index].file_index,
2324                input_streams[ost->source_index].st->index,
2325                ost->file_index,
2326                ost->index);
2327         if (ost->sync_ist != &input_streams[ost->source_index])
2328             av_log(NULL, AV_LOG_INFO, " [sync #%d.%d]",
2329                    ost->sync_ist->file_index,
2330                    ost->sync_ist->st->index);
2331         if (ost->st->stream_copy)
2332             av_log(NULL, AV_LOG_INFO, " (copy)");
2333         else
2334             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
2335                    input_streams[ost->source_index].dec->name : "?",
2336                    ost->enc ? ost->enc->name : "?");
2337         av_log(NULL, AV_LOG_INFO, "\n");
2338     }
2339
2340     if (ret) {
2341         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2342         return ret;
2343     }
2344
2345     if (want_sdp) {
2346         print_sdp(output_files, nb_output_files);
2347     }
2348
2349     return 0;
2350 }
2351
2352 /*
2353  * The following code is the main loop of the file converter
2354  */
2355 static int transcode(OutputFile *output_files, int nb_output_files,
2356                      InputFile  *input_files,  int nb_input_files)
2357 {
2358     int ret, i;
2359     AVFormatContext *is, *os;
2360     OutputStream *ost;
2361     InputStream *ist;
2362     uint8_t *no_packet;
2363     int no_packet_count=0;
2364     int64_t timer_start;
2365     int key;
2366
2367     if (!(no_packet = av_mallocz(nb_input_files)))
2368         exit_program(1);
2369
2370     ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2371     if (ret < 0)
2372         goto fail;
2373
2374     if (!using_stdin) {
2375         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
2376         avio_set_interrupt_cb(decode_interrupt_cb);
2377     }
2378     term_init();
2379
2380     timer_start = av_gettime();
2381
2382     for(; received_sigterm == 0;) {
2383         int file_index, ist_index;
2384         AVPacket pkt;
2385         int64_t ipts_min;
2386         double opts_min;
2387
2388         ipts_min= INT64_MAX;
2389         opts_min= 1e100;
2390         /* if 'q' pressed, exits */
2391         if (!using_stdin) {
2392             if (q_pressed)
2393                 break;
2394             /* read_key() returns 0 on EOF */
2395             key = read_key();
2396             if (key == 'q')
2397                 break;
2398             if (key == '+') av_log_set_level(av_log_get_level()+10);
2399             if (key == '-') av_log_set_level(av_log_get_level()-10);
2400             if (key == 's') qp_hist     ^= 1;
2401             if (key == 'h'){
2402                 if (do_hex_dump){
2403                     do_hex_dump = do_pkt_dump = 0;
2404                 } else if(do_pkt_dump){
2405                     do_hex_dump = 1;
2406                 } else
2407                     do_pkt_dump = 1;
2408                 av_log_set_level(AV_LOG_DEBUG);
2409             }
2410 #if CONFIG_AVFILTER
2411             if (key == 'c' || key == 'C'){
2412                 char buf[4096], target[64], command[256], arg[256] = {0};
2413                 double time;
2414                 int k, n = 0;
2415                 fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2416                 i = 0;
2417                 while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2418                     if (k > 0)
2419                         buf[i++] = k;
2420                 buf[i] = 0;
2421                 if (k > 0 &&
2422                     (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2423                     av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2424                            target, time, command, arg);
2425                     for (i = 0; i < nb_output_streams; i++) {
2426                         ost = &output_streams[i];
2427                         if (ost->graph) {
2428                             if (time < 0) {
2429                                 ret = avfilter_graph_send_command(ost->graph, target, command, arg, buf, sizeof(buf),
2430                                                                   key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2431                                 fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2432                             } else {
2433                                 ret = avfilter_graph_queue_command(ost->graph, target, command, arg, 0, time);
2434                             }
2435                         }
2436                     }
2437                 } else {
2438                     av_log(NULL, AV_LOG_ERROR,
2439                            "Parse error, at least 3 arguments were expected, "
2440                            "only %d given in string '%s'\n", n, buf);
2441                 }
2442             }
2443 #endif
2444             if (key == 'd' || key == 'D'){
2445                 int debug=0;
2446                 if(key == 'D') {
2447                     debug = input_streams[0].st->codec->debug<<1;
2448                     if(!debug) debug = 1;
2449                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2450                         debug += debug;
2451                 }else
2452                     scanf("%d", &debug);
2453                 for(i=0;i<nb_input_streams;i++) {
2454                     input_streams[i].st->codec->debug = debug;
2455                 }
2456                 for(i=0;i<nb_output_streams;i++) {
2457                     ost = &output_streams[i];
2458                     ost->st->codec->debug = debug;
2459                 }
2460                 if(debug) av_log_set_level(AV_LOG_DEBUG);
2461                 fprintf(stderr,"debug=%d\n", debug);
2462             }
2463             if (key == '?'){
2464                 fprintf(stderr, "key    function\n"
2465                                 "?      show this help\n"
2466                                 "+      increase verbosity\n"
2467                                 "-      decrease verbosity\n"
2468                                 "c      Send command to filtergraph\n"
2469                                 "D      cycle through available debug modes\n"
2470                                 "h      dump packets/hex press to cycle through the 3 states\n"
2471                                 "q      quit\n"
2472                                 "s      Show QP histogram\n"
2473                 );
2474             }
2475         }
2476
2477         /* select the stream that we must read now by looking at the
2478            smallest output pts */
2479         file_index = -1;
2480         for (i = 0; i < nb_output_streams; i++) {
2481             OutputFile *of;
2482             int64_t ipts;
2483             double  opts;
2484             ost = &output_streams[i];
2485             of = &output_files[ost->file_index];
2486             os = output_files[ost->file_index].ctx;
2487             ist = &input_streams[ost->source_index];
2488             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2489                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2490                 continue;
2491             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2492             ipts = ist->pts;
2493             if (!input_files[ist->file_index].eof_reached){
2494                 if(ipts < ipts_min) {
2495                     ipts_min = ipts;
2496                     if(input_sync ) file_index = ist->file_index;
2497                 }
2498                 if(opts < opts_min) {
2499                     opts_min = opts;
2500                     if(!input_sync) file_index = ist->file_index;
2501                 }
2502             }
2503             if (ost->frame_number >= ost->max_frames) {
2504                 int j;
2505                 for (j = 0; j < of->ctx->nb_streams; j++)
2506                     output_streams[of->ost_index + j].is_past_recording_time = 1;
2507                 continue;
2508             }
2509         }
2510         /* if none, if is finished */
2511         if (file_index < 0) {
2512             if(no_packet_count){
2513                 no_packet_count=0;
2514                 memset(no_packet, 0, nb_input_files);
2515                 usleep(10000);
2516                 continue;
2517             }
2518             break;
2519         }
2520
2521         /* read a frame from it and output it in the fifo */
2522         is = input_files[file_index].ctx;
2523         ret= av_read_frame(is, &pkt);
2524         if(ret == AVERROR(EAGAIN)){
2525             no_packet[file_index]=1;
2526             no_packet_count++;
2527             continue;
2528         }
2529         if (ret < 0) {
2530             input_files[file_index].eof_reached = 1;
2531             if (opt_shortest)
2532                 break;
2533             else
2534                 continue;
2535         }
2536
2537         no_packet_count=0;
2538         memset(no_packet, 0, nb_input_files);
2539
2540         if (do_pkt_dump) {
2541             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2542                              is->streams[pkt.stream_index]);
2543         }
2544         /* the following test is needed in case new streams appear
2545            dynamically in stream : we ignore them */
2546         if (pkt.stream_index >= input_files[file_index].nb_streams)
2547             goto discard_packet;
2548         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2549         ist = &input_streams[ist_index];
2550         if (ist->discard)
2551             goto discard_packet;
2552
2553         if (pkt.dts != AV_NOPTS_VALUE)
2554             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2555         if (pkt.pts != AV_NOPTS_VALUE)
2556             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2557
2558         if(pkt.pts != AV_NOPTS_VALUE)
2559             pkt.pts *= ist->ts_scale;
2560         if(pkt.dts != AV_NOPTS_VALUE)
2561             pkt.dts *= ist->ts_scale;
2562
2563 //        fprintf(stderr, "next:%"PRId64" dts:%"PRId64" off:%"PRId64" %d\n", ist->next_pts, pkt.dts, input_files[ist->file_index].ts_offset, ist->st->codec->codec_type);
2564         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2565             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2566             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2567             int64_t delta= pkt_dts - ist->next_pts;
2568             if((delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2569                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2570                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2571                 pkt_dts+1<ist->pts)&& !copy_ts){
2572                 input_files[ist->file_index].ts_offset -= delta;
2573                 av_log(NULL, AV_LOG_DEBUG, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2574                        delta, input_files[ist->file_index].ts_offset);
2575                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2576                 if(pkt.pts != AV_NOPTS_VALUE)
2577                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2578             }
2579         }
2580
2581         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2582         if (output_packet(ist, ist_index, output_streams, nb_output_streams, &pkt) < 0) {
2583
2584             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d.%d\n",
2585                    ist->file_index, ist->st->index);
2586             if (exit_on_error)
2587                 exit_program(1);
2588             av_free_packet(&pkt);
2589             continue;
2590         }
2591
2592     discard_packet:
2593         av_free_packet(&pkt);
2594
2595         /* dump report by using the output first video and audio streams */
2596         print_report(output_files, output_streams, nb_output_streams, 0, timer_start);
2597     }
2598
2599     /* at the end of stream, we must flush the decoder buffers */
2600     for (i = 0; i < nb_input_streams; i++) {
2601         ist = &input_streams[i];
2602         if (ist->decoding_needed) {
2603             output_packet(ist, i, output_streams, nb_output_streams, NULL);
2604         }
2605     }
2606     flush_encoders(output_streams, nb_output_streams);
2607
2608     term_exit();
2609
2610     /* write the trailer if needed and close file */
2611     for(i=0;i<nb_output_files;i++) {
2612         os = output_files[i].ctx;
2613         av_write_trailer(os);
2614     }
2615
2616     /* dump report by using the first video and audio streams */
2617     print_report(output_files, output_streams, nb_output_streams, 1, timer_start);
2618
2619     /* close each encoder */
2620     for (i = 0; i < nb_output_streams; i++) {
2621         ost = &output_streams[i];
2622         if (ost->encoding_needed) {
2623             av_freep(&ost->st->codec->stats_in);
2624             avcodec_close(ost->st->codec);
2625         }
2626 #if CONFIG_AVFILTER
2627         avfilter_graph_free(&ost->graph);
2628 #endif
2629     }
2630
2631     /* close each decoder */
2632     for (i = 0; i < nb_input_streams; i++) {
2633         ist = &input_streams[i];
2634         if (ist->decoding_needed) {
2635             avcodec_close(ist->st->codec);
2636         }
2637     }
2638
2639     /* finished ! */
2640     ret = 0;
2641
2642  fail:
2643     av_freep(&bit_buffer);
2644     av_freep(&no_packet);
2645
2646     if (output_streams) {
2647         for (i = 0; i < nb_output_streams; i++) {
2648             ost = &output_streams[i];
2649             if (ost) {
2650                 if (ost->st->stream_copy)
2651                     av_freep(&ost->st->codec->extradata);
2652                 if (ost->logfile) {
2653                     fclose(ost->logfile);
2654                     ost->logfile = NULL;
2655                 }
2656                 av_fifo_free(ost->fifo); /* works even if fifo is not
2657                                              initialized but set to zero */
2658                 av_freep(&ost->st->codec->subtitle_header);
2659                 av_free(ost->resample_frame.data[0]);
2660                 av_free(ost->forced_kf_pts);
2661                 if (ost->video_resample)
2662                     sws_freeContext(ost->img_resample_ctx);
2663                 swr_free(&ost->swr);
2664                 av_dict_free(&ost->opts);
2665             }
2666         }
2667     }
2668     return ret;
2669 }
2670
2671 static int opt_verbose(const char *opt, const char *arg)
2672 {
2673     av_log(NULL, AV_LOG_WARNING, "-%s is deprecated, use -loglevel\n", opt);
2674     return 0;
2675 }
2676
2677 static int opt_frame_crop(const char *opt, const char *arg)
2678 {
2679     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the crop filter instead\n", opt);
2680     return AVERROR(EINVAL);
2681 }
2682
2683 static int opt_pad(const char *opt, const char *arg)
2684 {
2685     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the pad filter instead\n", opt);
2686     return -1;
2687 }
2688
2689 static double parse_frame_aspect_ratio(const char *arg)
2690 {
2691     int x = 0, y = 0;
2692     double ar = 0;
2693     const char *p;
2694     char *end;
2695
2696     p = strchr(arg, ':');
2697     if (p) {
2698         x = strtol(arg, &end, 10);
2699         if (end == p)
2700             y = strtol(end+1, &end, 10);
2701         if (x > 0 && y > 0)
2702             ar = (double)x / (double)y;
2703     } else
2704         ar = strtod(arg, NULL);
2705
2706     if (!ar) {
2707         av_log(NULL, AV_LOG_FATAL, "Incorrect aspect ratio specification.\n");
2708         exit_program(1);
2709     }
2710     return ar;
2711 }
2712
2713 static int opt_video_channel(const char *opt, const char *arg)
2714 {
2715     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
2716     return opt_default("channel", arg);
2717 }
2718
2719 static int opt_video_standard(const char *opt, const char *arg)
2720 {
2721     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
2722     return opt_default("standard", arg);
2723 }
2724
2725 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2726 {
2727     audio_codec_name = arg;
2728     return parse_option(o, "codec:a", arg, options);
2729 }
2730
2731 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2732 {
2733     video_codec_name = arg;
2734     return parse_option(o, "codec:v", arg, options);
2735 }
2736
2737 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2738 {
2739     subtitle_codec_name = arg;
2740     return parse_option(o, "codec:s", arg, options);
2741 }
2742
2743 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2744 {
2745     return parse_option(o, "codec:d", arg, options);
2746 }
2747
2748 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2749 {
2750     StreamMap *m = NULL;
2751     int i, negative = 0, file_idx;
2752     int sync_file_idx = -1, sync_stream_idx;
2753     char *p, *sync;
2754     char *map;
2755
2756     if (*arg == '-') {
2757         negative = 1;
2758         arg++;
2759     }
2760     map = av_strdup(arg);
2761
2762     /* parse sync stream first, just pick first matching stream */
2763     if (sync = strchr(map, ',')) {
2764         *sync = 0;
2765         sync_file_idx = strtol(sync + 1, &sync, 0);
2766         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2767             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
2768             exit_program(1);
2769         }
2770         if (*sync)
2771             sync++;
2772         for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2773             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2774                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2775                 sync_stream_idx = i;
2776                 break;
2777             }
2778         if (i == input_files[sync_file_idx].nb_streams) {
2779             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
2780                                        "match any streams.\n", arg);
2781             exit_program(1);
2782         }
2783     }
2784
2785
2786     file_idx = strtol(map, &p, 0);
2787     if (file_idx >= nb_input_files || file_idx < 0) {
2788         av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
2789         exit_program(1);
2790     }
2791     if (negative)
2792         /* disable some already defined maps */
2793         for (i = 0; i < o->nb_stream_maps; i++) {
2794             m = &o->stream_maps[i];
2795             if (check_stream_specifier(input_files[m->file_index].ctx,
2796                                        input_files[m->file_index].ctx->streams[m->stream_index],
2797                                        *p == ':' ? p + 1 : p) > 0)
2798                 m->disabled = 1;
2799         }
2800     else
2801         for (i = 0; i < input_files[file_idx].nb_streams; i++) {
2802             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2803                         *p == ':' ? p + 1 : p) <= 0)
2804                 continue;
2805             o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
2806                                         &o->nb_stream_maps, o->nb_stream_maps + 1);
2807             m = &o->stream_maps[o->nb_stream_maps - 1];
2808
2809             m->file_index   = file_idx;
2810             m->stream_index = i;
2811
2812             if (sync_file_idx >= 0) {
2813                 m->sync_file_index   = sync_file_idx;
2814                 m->sync_stream_index = sync_stream_idx;
2815             } else {
2816                 m->sync_file_index   = file_idx;
2817                 m->sync_stream_index = i;
2818             }
2819         }
2820
2821     if (!m) {
2822         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
2823         exit_program(1);
2824     }
2825
2826     av_freep(&map);
2827     return 0;
2828 }
2829
2830 static void parse_meta_type(char *arg, char *type, int *index)
2831 {
2832     if (*arg) {
2833         *type = *arg;
2834         switch (*arg) {
2835         case 'g':
2836             break;
2837         case 's':
2838         case 'c':
2839         case 'p':
2840             if (*(++arg) == ':')
2841                 *index = strtol(++arg, NULL, 0);
2842             break;
2843         default:
2844             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
2845             exit_program(1);
2846         }
2847     } else
2848         *type = 'g';
2849 }
2850
2851 static int opt_map_metadata(OptionsContext *o, const char *opt, const char *arg)
2852 {
2853     MetadataMap *m, *m1;
2854     char *p;
2855
2856     o->meta_data_maps = grow_array(o->meta_data_maps, sizeof(*o->meta_data_maps),
2857                                    &o->nb_meta_data_maps, o->nb_meta_data_maps + 1);
2858
2859     m = &o->meta_data_maps[o->nb_meta_data_maps - 1][1];
2860     m->file = strtol(arg, &p, 0);
2861     parse_meta_type(*p ? p + 1 : p, &m->type, &m->index);
2862
2863     m1 = &o->meta_data_maps[o->nb_meta_data_maps - 1][0];
2864     if (p = strchr(opt, ':'))
2865         parse_meta_type(p + 1, &m1->type, &m1->index);
2866     else
2867         m1->type = 'g';
2868
2869     if (m->type == 'g' || m1->type == 'g')
2870         o->metadata_global_manual = 1;
2871     if (m->type == 's' || m1->type == 's')
2872         o->metadata_streams_manual = 1;
2873     if (m->type == 'c' || m1->type == 'c')
2874         o->metadata_chapters_manual = 1;
2875
2876     return 0;
2877 }
2878
2879 static int opt_map_meta_data(OptionsContext *o, const char *opt, const char *arg)
2880 {
2881     av_log(NULL, AV_LOG_WARNING, "-map_meta_data is deprecated and will be removed soon. "
2882                     "Use -map_metadata instead.\n");
2883     return opt_map_metadata(o, opt, arg);
2884 }
2885
2886 static int opt_recording_timestamp(OptionsContext *o, const char *opt, const char *arg)
2887 {
2888     char buf[128];
2889     int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
2890     struct tm time = *gmtime((time_t*)&recording_timestamp);
2891     strftime(buf, sizeof(buf), "creation_time=%FT%T%z", &time);
2892     parse_option(o, "metadata", buf, options);
2893
2894     av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
2895                                  "tag instead.\n", opt);
2896     return 0;
2897 }
2898
2899 static enum CodecID find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
2900 {
2901     const char *codec_string = encoder ? "encoder" : "decoder";
2902     AVCodec *codec;
2903
2904     if(!name)
2905         return CODEC_ID_NONE;
2906     codec = encoder ?
2907         avcodec_find_encoder_by_name(name) :
2908         avcodec_find_decoder_by_name(name);
2909     if(!codec) {
2910         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
2911         exit_program(1);
2912     }
2913     if(codec->type != type) {
2914         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
2915         exit_program(1);
2916     }
2917     return codec->id;
2918 }
2919
2920 static AVCodec *choose_codec(OptionsContext *o, AVFormatContext *s, AVStream *st, enum AVMediaType type)
2921 {
2922     char *codec_name = NULL;
2923
2924     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
2925
2926     if (!codec_name) {
2927         if (s->oformat) {
2928             st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename, NULL, type);
2929             return avcodec_find_encoder(st->codec->codec_id);
2930         }
2931     } else if (!strcmp(codec_name, "copy"))
2932         st->stream_copy = 1;
2933     else {
2934         st->codec->codec_id = find_codec_or_die(codec_name, type, s->iformat == NULL);
2935         return s->oformat ? avcodec_find_encoder_by_name(codec_name) :
2936                             avcodec_find_decoder_by_name(codec_name);
2937     }
2938
2939     return NULL;
2940 }
2941
2942 /**
2943  * Add all the streams from the given input file to the global
2944  * list of input streams.
2945  */
2946 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
2947 {
2948     int i, rfps, rfps_base;
2949
2950     for (i = 0; i < ic->nb_streams; i++) {
2951         AVStream *st = ic->streams[i];
2952         AVCodecContext *dec = st->codec;
2953         InputStream *ist;
2954         double scale = 1.0;
2955
2956         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
2957         ist = &input_streams[nb_input_streams - 1];
2958         ist->st = st;
2959         ist->file_index = nb_input_files;
2960         ist->discard = 1;
2961         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
2962
2963         MATCH_PER_STREAM_OPT(ts_scale, dbl, scale, ic, st);
2964         ist->ts_scale = scale;
2965
2966         ist->dec = choose_codec(o, ic, st, dec->codec_type);
2967         if (!ist->dec)
2968             ist->dec = avcodec_find_decoder(dec->codec_id);
2969
2970         switch (dec->codec_type) {
2971         case AVMEDIA_TYPE_AUDIO:
2972             if(!ist->dec)
2973                 ist->dec = avcodec_find_decoder(dec->codec_id);
2974             if(o->audio_disable)
2975                 st->discard= AVDISCARD_ALL;
2976             break;
2977         case AVMEDIA_TYPE_VIDEO:
2978             if(!ist->dec)
2979                 ist->dec = avcodec_find_decoder(dec->codec_id);
2980             rfps      = ic->streams[i]->r_frame_rate.num;
2981             rfps_base = ic->streams[i]->r_frame_rate.den;
2982             if (dec->lowres) {
2983                 dec->flags |= CODEC_FLAG_EMU_EDGE;
2984             }
2985
2986             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
2987
2988                 av_log(NULL, AV_LOG_INFO,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
2989                        i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
2990                        (float)rfps / rfps_base, rfps, rfps_base);
2991             }
2992
2993             if (o->video_disable)
2994                 st->discard= AVDISCARD_ALL;
2995             else if(video_discard)
2996                 st->discard= video_discard;
2997             break;
2998         case AVMEDIA_TYPE_DATA:
2999             break;
3000         case AVMEDIA_TYPE_SUBTITLE:
3001             if(!ist->dec)
3002                 ist->dec = avcodec_find_decoder(dec->codec_id);
3003             if(o->subtitle_disable)
3004                 st->discard = AVDISCARD_ALL;
3005             break;
3006         case AVMEDIA_TYPE_ATTACHMENT:
3007         case AVMEDIA_TYPE_UNKNOWN:
3008             break;
3009         default:
3010             abort();
3011         }
3012     }
3013 }
3014
3015 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
3016 {
3017     AVFormatContext *ic;
3018     AVInputFormat *file_iformat = NULL;
3019     int err, i, ret;
3020     int64_t timestamp;
3021     uint8_t buf[128];
3022     AVDictionary **opts;
3023     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
3024
3025     if (o->format) {
3026         if (!(file_iformat = av_find_input_format(o->format))) {
3027             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
3028             exit_program(1);
3029         }
3030     }
3031
3032     if (!strcmp(filename, "-"))
3033         filename = "pipe:";
3034
3035     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3036                     !strcmp(filename, "/dev/stdin");
3037
3038     /* get default parameters from command line */
3039     ic = avformat_alloc_context();
3040     if (!ic) {
3041         print_error(filename, AVERROR(ENOMEM));
3042         exit_program(1);
3043     }
3044     if (o->nb_audio_sample_rate) {
3045         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
3046         av_dict_set(&format_opts, "sample_rate", buf, 0);
3047     }
3048     if (o->nb_audio_channels) {
3049         snprintf(buf, sizeof(buf), "%d", o->audio_channels[o->nb_audio_channels - 1].u.i);
3050         av_dict_set(&format_opts, "channels", buf, 0);
3051     }
3052     if (o->nb_frame_rates) {
3053         av_dict_set(&format_opts, "framerate", o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
3054     }
3055     if (o->nb_frame_sizes) {
3056         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
3057     }
3058     if (o->nb_frame_pix_fmts)
3059         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
3060
3061     ic->flags |= AVFMT_FLAG_NONBLOCK;
3062
3063     if (loop_input) {
3064         av_log(NULL, AV_LOG_WARNING, "-loop_input is deprecated, use -loop 1\n");
3065         ic->loop_input = loop_input;
3066     }
3067
3068     /* open the input file with generic libav function */
3069     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3070     if (err < 0) {
3071         print_error(filename, err);
3072         exit_program(1);
3073     }
3074     assert_avoptions(format_opts);
3075
3076     /* apply forced codec ids */
3077     for (i = 0; i < ic->nb_streams; i++)
3078         choose_codec(o, ic, ic->streams[i], ic->streams[i]->codec->codec_type);
3079
3080     /* Set AVCodecContext options for avformat_find_stream_info */
3081     opts = setup_find_stream_info_opts(ic, codec_opts);
3082     orig_nb_streams = ic->nb_streams;
3083
3084     /* If not enough info to get the stream parameters, we decode the
3085        first frames to get it. (used in mpeg case for example) */
3086     ret = avformat_find_stream_info(ic, opts);
3087     if (ret < 0) {
3088         av_log(NULL, AV_LOG_FATAL, "%s: could not find codec parameters\n", filename);
3089         av_close_input_file(ic);
3090         exit_program(1);
3091     }
3092
3093     timestamp = o->start_time;
3094     /* add the stream start time */
3095     if (ic->start_time != AV_NOPTS_VALUE)
3096         timestamp += ic->start_time;
3097
3098     /* if seeking requested, we execute it */
3099     if (o->start_time != 0) {
3100         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3101         if (ret < 0) {
3102             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
3103                    filename, (double)timestamp / AV_TIME_BASE);
3104         }
3105     }
3106
3107     /* update the current parameters so that they match the one of the input stream */
3108     add_input_streams(o, ic);
3109
3110     /* dump the file content */
3111     av_dump_format(ic, nb_input_files, filename, 0);
3112
3113     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3114     input_files[nb_input_files - 1].ctx        = ic;
3115     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3116     input_files[nb_input_files - 1].ts_offset  = o->input_ts_offset - (copy_ts ? 0 : timestamp);
3117     input_files[nb_input_files - 1].nb_streams = ic->nb_streams;
3118     input_files[nb_input_files - 1].rate_emu   = o->rate_emu;
3119
3120     for (i = 0; i < orig_nb_streams; i++)
3121         av_dict_free(&opts[i]);
3122     av_freep(&opts);
3123
3124     reset_options(o, 1);
3125     return 0;
3126 }
3127
3128 static void parse_forced_key_frames(char *kf, OutputStream *ost, AVCodecContext *avctx)
3129 {
3130     char *p;
3131     int n = 1, i;
3132     int64_t t;
3133
3134     for (p = kf; *p; p++)
3135         if (*p == ',')
3136             n++;
3137     ost->forced_kf_count = n;
3138     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
3139     if (!ost->forced_kf_pts) {
3140         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
3141         exit_program(1);
3142     }
3143     for (i = 0; i < n; i++) {
3144         p = i ? strchr(p, ',') + 1 : kf;
3145         t = parse_time_or_die("force_key_frames", p, 1);
3146         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
3147     }
3148 }
3149
3150 static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
3151 {
3152     OutputStream *ost;
3153     AVStream *st = av_new_stream(oc, oc->nb_streams < o->nb_streamid_map ? o->streamid_map[oc->nb_streams] : 0);
3154     int idx      = oc->nb_streams - 1;
3155     int64_t max_frames = INT64_MAX;
3156     char *bsf = NULL, *next, *codec_tag = NULL;
3157     AVBitStreamFilterContext *bsfc, *bsfc_prev = NULL;
3158     double qscale = -1;
3159
3160     if (!st) {
3161         av_log(NULL, AV_LOG_FATAL, "Could not alloc stream.\n");
3162         exit_program(1);
3163     }
3164
3165     output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
3166                                 nb_output_streams + 1);
3167     ost = &output_streams[nb_output_streams - 1];
3168     ost->file_index = nb_output_files;
3169     ost->index = idx;
3170     ost->st    = st;
3171     st->codec->codec_type = type;
3172     ost->enc = choose_codec(o, oc, st, type);
3173     if (ost->enc) {
3174         ost->opts  = filter_codec_opts(codec_opts, ost->enc->id, oc, st);
3175     }
3176
3177     avcodec_get_context_defaults3(st->codec, ost->enc);
3178     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
3179
3180     MATCH_PER_STREAM_OPT(max_frames, i64, max_frames, oc, st);
3181     ost->max_frames = max_frames;
3182
3183     MATCH_PER_STREAM_OPT(bitstream_filters, str, bsf, oc, st);
3184     while (bsf) {
3185         if (next = strchr(bsf, ','))
3186             *next++ = 0;
3187         if (!(bsfc = av_bitstream_filter_init(bsf))) {
3188             av_log(NULL, AV_LOG_FATAL, "Unknown bitstream filter %s\n", bsf);
3189             exit_program(1);
3190         }
3191         if (bsfc_prev)
3192             bsfc_prev->next = bsfc;
3193         else
3194             ost->bitstream_filters = bsfc;
3195
3196         bsfc_prev = bsfc;
3197         bsf       = next;
3198     }
3199
3200     MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, oc, st);
3201     if (codec_tag) {
3202         uint32_t tag = strtol(codec_tag, &next, 0);
3203         if (*next)
3204             tag = AV_RL32(codec_tag);
3205         st->codec->codec_tag = tag;
3206     }
3207
3208     MATCH_PER_STREAM_OPT(qscale, dbl, qscale, oc, st);
3209     if (qscale >= 0 || same_quant) {
3210         st->codec->flags |= CODEC_FLAG_QSCALE;
3211         st->codec->global_quality = FF_QP2LAMBDA * qscale;
3212     }
3213
3214     if (oc->oformat->flags & AVFMT_GLOBALHEADER)
3215         st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
3216
3217     ost->sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
3218     return ost;
3219 }
3220
3221 static void parse_matrix_coeffs(uint16_t *dest, const char *str)
3222 {
3223     int i;
3224     const char *p = str;
3225     for(i = 0;; i++) {
3226         dest[i] = atoi(p);
3227         if(i == 63)
3228             break;
3229         p = strchr(p, ',');
3230         if(!p) {
3231             av_log(NULL, AV_LOG_FATAL, "Syntax error in matrix \"%s\" at coeff %d\n", str, i);
3232             exit_program(1);
3233         }
3234         p++;
3235     }
3236 }
3237
3238 static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc)
3239 {
3240     AVStream *st;
3241     OutputStream *ost;
3242     AVCodecContext *video_enc;
3243
3244     ost = new_output_stream(o, oc, AVMEDIA_TYPE_VIDEO);
3245     st  = ost->st;
3246     video_enc = st->codec;
3247
3248     if (!st->stream_copy) {
3249         const char *p = NULL;
3250         char *forced_key_frames = NULL, *frame_rate = NULL, *frame_size = NULL;
3251         char *frame_aspect_ratio = NULL, *frame_pix_fmt = NULL;
3252         char *intra_matrix = NULL, *inter_matrix = NULL, *filters = NULL;
3253         int i, force_fps = 0, top_field_first = -1;
3254
3255         MATCH_PER_STREAM_OPT(frame_rates, str, frame_rate, oc, st);
3256         if (frame_rate && av_parse_video_rate(&ost->frame_rate, frame_rate) < 0) {
3257             av_log(NULL, AV_LOG_FATAL, "Invalid framerate value: %s\n", frame_rate);
3258             exit_program(1);
3259         }
3260
3261         MATCH_PER_STREAM_OPT(frame_sizes, str, frame_size, oc, st);
3262         if (frame_size && av_parse_video_size(&video_enc->width, &video_enc->height, frame_size) < 0) {
3263             av_log(NULL, AV_LOG_FATAL, "Invalid frame size: %s.\n", frame_size);
3264             exit_program(1);
3265         }
3266
3267         MATCH_PER_STREAM_OPT(frame_aspect_ratios, str, frame_aspect_ratio, oc, st);
3268         if (frame_aspect_ratio)
3269             ost->frame_aspect_ratio = parse_frame_aspect_ratio(frame_aspect_ratio);
3270
3271         video_enc->bits_per_raw_sample = frame_bits_per_raw_sample;
3272         MATCH_PER_STREAM_OPT(frame_pix_fmts, str, frame_pix_fmt, oc, st);
3273         if (frame_pix_fmt && (video_enc->pix_fmt = av_get_pix_fmt(frame_pix_fmt)) == PIX_FMT_NONE) {
3274             av_log(NULL, AV_LOG_FATAL, "Unknown pixel format requested: %s.\n", frame_pix_fmt);
3275             exit_program(1);
3276         }
3277         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3278
3279         if (intra_only)
3280             video_enc->gop_size = 0;
3281         MATCH_PER_STREAM_OPT(intra_matrices, str, intra_matrix, oc, st);
3282         if (intra_matrix) {
3283             if (!(video_enc->intra_matrix = av_mallocz(sizeof(*video_enc->intra_matrix) * 64))) {
3284                 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for intra matrix.\n");
3285                 exit_program(1);
3286             }
3287             parse_matrix_coeffs(video_enc->intra_matrix, intra_matrix);
3288         }
3289         MATCH_PER_STREAM_OPT(inter_matrices, str, inter_matrix, oc, st);
3290         if (inter_matrix) {
3291             if (!(video_enc->inter_matrix = av_mallocz(sizeof(*video_enc->inter_matrix) * 64))) {
3292                 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for inter matrix.\n");
3293                 exit_program(1);
3294             }
3295             parse_matrix_coeffs(video_enc->inter_matrix, inter_matrix);
3296         }
3297
3298         MATCH_PER_STREAM_OPT(rc_overrides, str, p, oc, st);
3299         for(i=0; p; i++){
3300             int start, end, q;
3301             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3302             if(e!=3){
3303                 av_log(NULL, AV_LOG_FATAL, "error parsing rc_override\n");
3304                 exit_program(1);
3305             }
3306             /* FIXME realloc failure */
3307             video_enc->rc_override=
3308                 av_realloc(video_enc->rc_override,
3309                            sizeof(RcOverride)*(i+1));
3310             video_enc->rc_override[i].start_frame= start;
3311             video_enc->rc_override[i].end_frame  = end;
3312             if(q>0){
3313                 video_enc->rc_override[i].qscale= q;
3314                 video_enc->rc_override[i].quality_factor= 1.0;
3315             }
3316             else{
3317                 video_enc->rc_override[i].qscale= 0;
3318                 video_enc->rc_override[i].quality_factor= -q/100.0;
3319             }
3320             p= strchr(p, '/');
3321             if(p) p++;
3322         }
3323         video_enc->rc_override_count=i;
3324         if (!video_enc->rc_initial_buffer_occupancy)
3325             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3326         video_enc->intra_dc_precision= intra_dc_precision - 8;
3327
3328         /* two pass mode */
3329         if (do_pass) {
3330             if (do_pass == 1) {
3331                 video_enc->flags |= CODEC_FLAG_PASS1;
3332             } else {
3333                 video_enc->flags |= CODEC_FLAG_PASS2;
3334             }
3335         }
3336
3337         MATCH_PER_STREAM_OPT(forced_key_frames, str, forced_key_frames, oc, st);
3338         if (forced_key_frames)
3339             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3340
3341         MATCH_PER_STREAM_OPT(force_fps, i, force_fps, oc, st);
3342         ost->force_fps = force_fps;
3343
3344         MATCH_PER_STREAM_OPT(top_field_first, i, top_field_first, oc, st);
3345         ost->top_field_first = top_field_first;
3346
3347 #if CONFIG_AVFILTER
3348         MATCH_PER_STREAM_OPT(filters, str, filters, oc, st);
3349         if (filters)
3350             ost->avfilter = av_strdup(filters);
3351 #endif
3352     }
3353
3354     return ost;
3355 }
3356
3357 static OutputStream *new_audio_stream(OptionsContext *o, AVFormatContext *oc)
3358 {
3359     AVStream *st;
3360     OutputStream *ost;
3361     AVCodecContext *audio_enc;
3362
3363     ost = new_output_stream(o, oc, AVMEDIA_TYPE_AUDIO);
3364     st  = ost->st;
3365
3366     audio_enc = st->codec;
3367     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3368
3369     if (!st->stream_copy) {
3370         char *sample_fmt = NULL;
3371
3372         MATCH_PER_STREAM_OPT(audio_channels, i, audio_enc->channels, oc, st);
3373
3374         MATCH_PER_STREAM_OPT(sample_fmts, str, sample_fmt, oc, st);
3375         if (sample_fmt &&
3376             (audio_enc->sample_fmt = av_get_sample_fmt(sample_fmt)) == AV_SAMPLE_FMT_NONE) {
3377             av_log(NULL, AV_LOG_FATAL, "Invalid sample format '%s'\n", sample_fmt);
3378             exit_program(1);
3379         }
3380
3381         MATCH_PER_STREAM_OPT(audio_sample_rate, i, audio_enc->sample_rate, oc, st);
3382     }
3383
3384     return ost;
3385 }
3386
3387 static OutputStream *new_data_stream(OptionsContext *o, AVFormatContext *oc)
3388 {
3389     AVStream *st;
3390     OutputStream *ost;
3391
3392     ost = new_output_stream(o, oc, AVMEDIA_TYPE_DATA);
3393     st  = ost->st;
3394     if (!st->stream_copy) {
3395         av_log(NULL, AV_LOG_FATAL, "Data stream encoding not supported yet (only streamcopy)\n");
3396         exit_program(1);
3397     }
3398
3399     return ost;
3400 }
3401
3402 static OutputStream *new_attachment_stream(OptionsContext *o, AVFormatContext *oc)
3403 {
3404     OutputStream *ost = new_output_stream(o, oc, AVMEDIA_TYPE_ATTACHMENT);
3405     ost->st->stream_copy = 1;
3406     return ost;
3407 }
3408
3409 static OutputStream *new_subtitle_stream(OptionsContext *o, AVFormatContext *oc)
3410 {
3411     AVStream *st;
3412     OutputStream *ost;
3413     AVCodecContext *subtitle_enc;
3414
3415     ost = new_output_stream(o, oc, AVMEDIA_TYPE_SUBTITLE);
3416     st  = ost->st;
3417     subtitle_enc = st->codec;
3418
3419     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3420
3421     return ost;
3422 }
3423
3424 /* arg format is "output-stream-index:streamid-value". */
3425 static int opt_streamid(OptionsContext *o, const char *opt, const char *arg)
3426 {
3427     int idx;
3428     char *p;
3429     char idx_str[16];
3430
3431     av_strlcpy(idx_str, arg, sizeof(idx_str));
3432     p = strchr(idx_str, ':');
3433     if (!p) {
3434         av_log(NULL, AV_LOG_FATAL,
3435                "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3436                arg, opt);
3437         exit_program(1);
3438     }
3439     *p++ = '\0';
3440     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, MAX_STREAMS-1);
3441     o->streamid_map = grow_array(o->streamid_map, sizeof(*o->streamid_map), &o->nb_streamid_map, idx+1);
3442     o->streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3443     return 0;
3444 }
3445
3446 static int copy_chapters(InputFile *ifile, OutputFile *ofile, int copy_metadata)
3447 {
3448     AVFormatContext *is = ifile->ctx;
3449     AVFormatContext *os = ofile->ctx;
3450     int i;
3451
3452     for (i = 0; i < is->nb_chapters; i++) {
3453         AVChapter *in_ch = is->chapters[i], *out_ch;
3454         int64_t ts_off   = av_rescale_q(ofile->start_time - ifile->ts_offset,
3455                                       AV_TIME_BASE_Q, in_ch->time_base);
3456         int64_t rt       = (ofile->recording_time == INT64_MAX) ? INT64_MAX :
3457                            av_rescale_q(ofile->recording_time, AV_TIME_BASE_Q, in_ch->time_base);
3458
3459
3460         if (in_ch->end < ts_off)
3461             continue;
3462         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
3463             break;
3464
3465         out_ch = av_mallocz(sizeof(AVChapter));
3466         if (!out_ch)
3467             return AVERROR(ENOMEM);
3468
3469         out_ch->id        = in_ch->id;
3470         out_ch->time_base = in_ch->time_base;
3471         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
3472         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
3473
3474         if (copy_metadata)
3475             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
3476
3477         os->nb_chapters++;
3478         os->chapters = av_realloc_f(os->chapters, os->nb_chapters, sizeof(AVChapter));
3479         if (!os->chapters)
3480             return AVERROR(ENOMEM);
3481         os->chapters[os->nb_chapters - 1] = out_ch;
3482     }
3483     return 0;
3484 }
3485
3486 static int read_ffserver_streams(OptionsContext *o, AVFormatContext *s, const char *filename)
3487 {
3488     int i, err;
3489     AVFormatContext *ic = NULL;
3490
3491     err = avformat_open_input(&ic, filename, NULL, NULL);
3492     if (err < 0)
3493         return err;
3494     /* copy stream format */
3495     for(i=0;i<ic->nb_streams;i++) {
3496         AVStream *st;
3497         OutputStream *ost;
3498         AVCodec *codec;
3499
3500         codec = avcodec_find_encoder(ic->streams[i]->codec->codec_id);
3501         ost   = new_output_stream(o, s, codec->type);
3502         st    = ost->st;
3503
3504         // FIXME: a more elegant solution is needed
3505         memcpy(st, ic->streams[i], sizeof(AVStream));
3506         st->info = av_malloc(sizeof(*st->info));
3507         memcpy(st->info, ic->streams[i]->info, sizeof(*st->info));
3508         avcodec_copy_context(st->codec, ic->streams[i]->codec);
3509
3510         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && !st->stream_copy)
3511             choose_sample_fmt(st, codec);
3512         else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && !st->stream_copy)
3513             choose_pixel_fmt(st, codec);
3514     }
3515
3516     av_close_input_file(ic);
3517     return 0;
3518 }
3519
3520 static void opt_output_file(void *optctx, const char *filename)
3521 {
3522     OptionsContext *o = optctx;
3523     AVFormatContext *oc;
3524     int i, err;
3525     AVOutputFormat *file_oformat;
3526     OutputStream *ost;
3527     InputStream  *ist;
3528
3529     if (!strcmp(filename, "-"))
3530         filename = "pipe:";
3531
3532     err = avformat_alloc_output_context2(&oc, NULL, o->format, filename);
3533     if (!oc) {
3534         print_error(filename, err);
3535         exit_program(1);
3536     }
3537     file_oformat= oc->oformat;
3538
3539     if (!strcmp(file_oformat->name, "ffm") &&
3540         av_strstart(filename, "http:", NULL)) {
3541         /* special case for files sent to ffserver: we get the stream
3542            parameters from ffserver */
3543         int err = read_ffserver_streams(o, oc, filename);
3544         if (err < 0) {
3545             print_error(filename, err);
3546             exit_program(1);
3547         }
3548     } else if (!o->nb_stream_maps) {
3549         /* pick the "best" stream of each type */
3550 #define NEW_STREAM(type, index)\
3551         if (index >= 0) {\
3552             ost = new_ ## type ## _stream(o, oc);\
3553             ost->source_index = index;\
3554             ost->sync_ist     = &input_streams[index];\
3555             input_streams[index].discard = 0;\
3556         }
3557
3558         /* video: highest resolution */
3559         if (!o->video_disable && oc->oformat->video_codec != CODEC_ID_NONE) {
3560             int area = 0, idx = -1;
3561             for (i = 0; i < nb_input_streams; i++) {
3562                 ist = &input_streams[i];
3563                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3564                     ist->st->codec->width * ist->st->codec->height > area) {
3565                     area = ist->st->codec->width * ist->st->codec->height;
3566                     idx = i;
3567                 }
3568             }
3569             NEW_STREAM(video, idx);
3570         }
3571
3572         /* audio: most channels */
3573         if (!o->audio_disable && oc->oformat->audio_codec != CODEC_ID_NONE) {
3574             int channels = 0, idx = -1;
3575             for (i = 0; i < nb_input_streams; i++) {
3576                 ist = &input_streams[i];
3577                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
3578                     ist->st->codec->channels > channels) {
3579                     channels = ist->st->codec->channels;
3580                     idx = i;
3581                 }
3582             }
3583             NEW_STREAM(audio, idx);
3584         }
3585
3586         /* subtitles: pick first */
3587         if (!o->subtitle_disable && (oc->oformat->subtitle_codec != CODEC_ID_NONE || subtitle_codec_name)) {
3588             for (i = 0; i < nb_input_streams; i++)
3589                 if (input_streams[i].st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3590                     NEW_STREAM(subtitle, i);
3591                     break;
3592                 }
3593         }
3594         /* do something with data? */
3595     } else {
3596         for (i = 0; i < o->nb_stream_maps; i++) {
3597             StreamMap *map = &o->stream_maps[i];
3598
3599             if (map->disabled)
3600                 continue;
3601
3602             ist = &input_streams[input_files[map->file_index].ist_index + map->stream_index];
3603             switch (ist->st->codec->codec_type) {
3604             case AVMEDIA_TYPE_VIDEO:    ost = new_video_stream(o, oc);    break;
3605             case AVMEDIA_TYPE_AUDIO:    ost = new_audio_stream(o, oc);    break;
3606             case AVMEDIA_TYPE_SUBTITLE: ost = new_subtitle_stream(o, oc); break;
3607             case AVMEDIA_TYPE_DATA:     ost = new_data_stream(o, oc);     break;
3608             case AVMEDIA_TYPE_ATTACHMENT: ost = new_attachment_stream(o, oc); break;
3609             default:
3610                 av_log(NULL, AV_LOG_FATAL, "Cannot map stream #%d.%d - unsupported type.\n",
3611                        map->file_index, map->stream_index);
3612                 exit_program(1);
3613             }
3614
3615             ost->source_index = input_files[map->file_index].ist_index + map->stream_index;
3616             ost->sync_ist = &input_streams[input_files[map->sync_file_index].ist_index +
3617                                            map->sync_stream_index];
3618             ist->discard = 0;
3619         }
3620     }
3621
3622     output_files = grow_array(output_files, sizeof(*output_files), &nb_output_files, nb_output_files + 1);
3623     output_files[nb_output_files - 1].ctx       = oc;
3624     output_files[nb_output_files - 1].ost_index = nb_output_streams - oc->nb_streams;
3625     output_files[nb_output_files - 1].recording_time = o->recording_time;
3626     output_files[nb_output_files - 1].start_time     = o->start_time;
3627     output_files[nb_output_files - 1].limit_filesize = o->limit_filesize;
3628     av_dict_copy(&output_files[nb_output_files - 1].opts, format_opts, 0);
3629
3630     /* check filename in case of an image number is expected */
3631     if (oc->oformat->flags & AVFMT_NEEDNUMBER) {
3632         if (!av_filename_number_test(oc->filename)) {
3633             print_error(oc->filename, AVERROR(EINVAL));
3634             exit_program(1);