ffmpeg: increase bit_buffer_size, the header size is clearly too small for rgb48...
[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 verbose = 1;
149 static int run_as_daemon  = 0;
150 static int q_pressed = 0;
151 static int64_t video_size = 0;
152 static int64_t audio_size = 0;
153 static int64_t extra_size = 0;
154 static int nb_frames_dup = 0;
155 static int nb_frames_drop = 0;
156 static int input_sync;
157
158 static float dts_delta_threshold = 10;
159
160 static uint8_t *audio_buf;
161 static uint8_t *audio_out;
162 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
163
164 static short *samples;
165 static uint8_t *input_tmp= NULL;
166
167 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
168
169 typedef struct InputStream {
170     int file_index;
171     AVStream *st;
172     int discard;             /* true if stream data should be discarded */
173     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
174     AVCodec *dec;
175
176     int64_t       start;     /* time when read started */
177     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
178                                 is not defined */
179     int64_t       pts;       /* current pts */
180     double ts_scale;
181     int is_start;            /* is 1 at the start and after a discontinuity */
182     int showed_multi_packet_warning;
183     AVDictionary *opts;
184 } InputStream;
185
186 typedef struct InputFile {
187     AVFormatContext *ctx;
188     int eof_reached;      /* true if eof reached */
189     int ist_index;        /* index of first stream in ist_table */
190     int buffer_size;      /* current total buffer size */
191     int64_t ts_offset;
192     int nb_streams;       /* number of stream that avconv is aware of; may be different
193                              from ctx.nb_streams if new streams appear during av_read_frame() */
194     int rate_emu;
195 } InputFile;
196
197 typedef struct OutputStream {
198     int file_index;          /* file index */
199     int index;               /* stream index in the output file */
200     int source_index;        /* InputStream index */
201     AVStream *st;            /* stream in the output file */
202     int encoding_needed;     /* true if encoding needed for this stream */
203     int frame_number;
204     /* input pts and corresponding output pts
205        for A/V sync */
206     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
207     struct InputStream *sync_ist; /* input stream to sync against */
208     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
209     AVBitStreamFilterContext *bitstream_filters;
210     AVCodec *enc;
211     int64_t max_frames;
212
213     /* video only */
214     int video_resample;
215     AVFrame resample_frame;              /* temporary frame for image resampling */
216     struct SwsContext *img_resample_ctx; /* for image resampling */
217     int resample_height;
218     int resample_width;
219     int resample_pix_fmt;
220     AVRational frame_rate;
221     int force_fps;
222     int top_field_first;
223
224     float frame_aspect_ratio;
225
226     /* forced key frames */
227     int64_t *forced_kf_pts;
228     int forced_kf_count;
229     int forced_kf_index;
230
231     /* audio only */
232     int audio_resample;
233     int resample_sample_fmt;
234     int resample_channels;
235     int resample_sample_rate;
236     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
237     FILE *logfile;
238
239     struct SwrContext *swr;
240
241 #if CONFIG_AVFILTER
242     AVFilterContext *output_video_filter;
243     AVFilterContext *input_video_filter;
244     AVFilterBufferRef *picref;
245     char *avfilter;
246     AVFilterGraph *graph;
247 #endif
248
249    int sws_flags;
250    AVDictionary *opts;
251    int is_past_recording_time;
252 } OutputStream;
253
254
255 #if HAVE_TERMIOS_H
256
257 /* init terminal so that we can grab keys */
258 static struct termios oldtty;
259 #endif
260
261 typedef struct OutputFile {
262     AVFormatContext *ctx;
263     AVDictionary *opts;
264     int ost_index;       /* index of the first stream in output_streams */
265     int64_t recording_time; /* desired length of the resulting file in microseconds */
266     int64_t start_time;     /* start time in microseconds */
267     uint64_t limit_filesize;
268 } OutputFile;
269
270 static InputStream *input_streams = NULL;
271 static int         nb_input_streams = 0;
272 static InputFile   *input_files   = NULL;
273 static int         nb_input_files   = 0;
274
275 static OutputStream *output_streams = NULL;
276 static int        nb_output_streams = 0;
277 static OutputFile   *output_files   = NULL;
278 static int        nb_output_files   = 0;
279
280 typedef struct OptionsContext {
281     /* input/output options */
282     int64_t start_time;
283     const char *format;
284
285     SpecifierOpt *codec_names;
286     int        nb_codec_names;
287     SpecifierOpt *audio_channels;
288     int        nb_audio_channels;
289     SpecifierOpt *audio_sample_rate;
290     int        nb_audio_sample_rate;
291     SpecifierOpt *frame_rates;
292     int        nb_frame_rates;
293     SpecifierOpt *frame_sizes;
294     int        nb_frame_sizes;
295     SpecifierOpt *frame_pix_fmts;
296     int        nb_frame_pix_fmts;
297
298     /* input options */
299     int64_t input_ts_offset;
300     int rate_emu;
301
302     SpecifierOpt *ts_scale;
303     int        nb_ts_scale;
304
305     /* output options */
306     StreamMap *stream_maps;
307     int     nb_stream_maps;
308     /* first item specifies output metadata, second is input */
309     MetadataMap (*meta_data_maps)[2];
310     int nb_meta_data_maps;
311     int metadata_global_manual;
312     int metadata_streams_manual;
313     int metadata_chapters_manual;
314
315     int chapters_input_file;
316
317     int64_t recording_time;
318     uint64_t limit_filesize;
319     float mux_preload;
320     float mux_max_delay;
321
322     int video_disable;
323     int audio_disable;
324     int subtitle_disable;
325     int data_disable;
326
327     /* indexed by output file stream index */
328     int   *streamid_map;
329     int nb_streamid_map;
330
331     SpecifierOpt *metadata;
332     int        nb_metadata;
333     SpecifierOpt *max_frames;
334     int        nb_max_frames;
335     SpecifierOpt *bitstream_filters;
336     int        nb_bitstream_filters;
337     SpecifierOpt *codec_tags;
338     int        nb_codec_tags;
339     SpecifierOpt *sample_fmts;
340     int        nb_sample_fmts;
341     SpecifierOpt *qscale;
342     int        nb_qscale;
343     SpecifierOpt *forced_key_frames;
344     int        nb_forced_key_frames;
345     SpecifierOpt *force_fps;
346     int        nb_force_fps;
347     SpecifierOpt *frame_aspect_ratios;
348     int        nb_frame_aspect_ratios;
349     SpecifierOpt *rc_overrides;
350     int        nb_rc_overrides;
351     SpecifierOpt *intra_matrices;
352     int        nb_intra_matrices;
353     SpecifierOpt *inter_matrices;
354     int        nb_inter_matrices;
355     SpecifierOpt *top_field_first;
356     int        nb_top_field_first;
357 #if CONFIG_AVFILTER
358     SpecifierOpt *filters;
359     int        nb_filters;
360 #endif
361 } OptionsContext;
362
363 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
364 {\
365     int i, ret;\
366     for (i = 0; i < o->nb_ ## name; i++) {\
367         char *spec = o->name[i].specifier;\
368         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
369             outvar = o->name[i].u.type;\
370         else if (ret < 0)\
371             exit_program(1);\
372     }\
373 }
374
375 static void reset_options(OptionsContext *o, int is_input)
376 {
377     const OptionDef *po = options;
378     OptionsContext bak= *o;
379
380     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
381     while (po->name) {
382         void *dst = (uint8_t*)o + po->u.off;
383
384         if (po->flags & OPT_SPEC) {
385             SpecifierOpt **so = dst;
386             int i, *count = (int*)(so + 1);
387             for (i = 0; i < *count; i++) {
388                 av_freep(&(*so)[i].specifier);
389                 if (po->flags & OPT_STRING)
390                     av_freep(&(*so)[i].u.str);
391             }
392             av_freep(so);
393             *count = 0;
394         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
395             av_freep(dst);
396         po++;
397     }
398
399     av_freep(&o->stream_maps);
400     av_freep(&o->meta_data_maps);
401     av_freep(&o->streamid_map);
402
403     memset(o, 0, sizeof(*o));
404
405     if(is_input) o->recording_time = bak.recording_time;
406     else         o->recording_time = INT64_MAX;
407     o->mux_preload    = 0.5;
408     o->mux_max_delay  = 0.7;
409     o->limit_filesize = UINT64_MAX;
410     o->chapters_input_file = INT_MAX;
411
412     uninit_opts();
413     init_opts();
414 }
415
416 #if CONFIG_AVFILTER
417
418 static int configure_video_filters(InputStream *ist, OutputStream *ost)
419 {
420     AVFilterContext *last_filter, *filter;
421     /** filter graph containing all filters including input & output */
422     AVCodecContext *codec = ost->st->codec;
423     AVCodecContext *icodec = ist->st->codec;
424     enum PixelFormat pix_fmts[] = { codec->pix_fmt, PIX_FMT_NONE };
425     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
426     AVRational sample_aspect_ratio;
427     char args[255];
428     int ret;
429
430     ost->graph = avfilter_graph_alloc();
431
432     if (ist->st->sample_aspect_ratio.num){
433         sample_aspect_ratio = ist->st->sample_aspect_ratio;
434     }else
435         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
436
437     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
438              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
439              sample_aspect_ratio.num, sample_aspect_ratio.den);
440
441     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
442                                        "src", args, NULL, ost->graph);
443     if (ret < 0)
444         return ret;
445 #if FF_API_OLD_VSINK_API
446     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
447                                        "out", NULL, pix_fmts, ost->graph);
448 #else
449     buffersink_params->pixel_fmts = pix_fmts;
450     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
451                                        "out", NULL, buffersink_params, ost->graph);
452 #endif
453     av_freep(&buffersink_params);
454     if (ret < 0)
455         return ret;
456     last_filter = ost->input_video_filter;
457
458     if (codec->width  != icodec->width || codec->height != icodec->height) {
459         snprintf(args, 255, "%d:%d:flags=0x%X",
460                  codec->width,
461                  codec->height,
462                  ost->sws_flags);
463         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
464                                                 NULL, args, NULL, ost->graph)) < 0)
465             return ret;
466         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
467             return ret;
468         last_filter = filter;
469     }
470
471     snprintf(args, sizeof(args), "flags=0x%X", ost->sws_flags);
472     ost->graph->scale_sws_opts = av_strdup(args);
473
474     if (ost->avfilter) {
475         AVFilterInOut *outputs = avfilter_inout_alloc();
476         AVFilterInOut *inputs  = avfilter_inout_alloc();
477
478         outputs->name    = av_strdup("in");
479         outputs->filter_ctx = last_filter;
480         outputs->pad_idx = 0;
481         outputs->next    = NULL;
482
483         inputs->name    = av_strdup("out");
484         inputs->filter_ctx = ost->output_video_filter;
485         inputs->pad_idx = 0;
486         inputs->next    = NULL;
487
488         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, &inputs, &outputs, NULL)) < 0)
489             return ret;
490         av_freep(&ost->avfilter);
491     } else {
492         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
493             return ret;
494     }
495
496     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
497         return ret;
498
499     codec->width  = ost->output_video_filter->inputs[0]->w;
500     codec->height = ost->output_video_filter->inputs[0]->h;
501     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
502         ost->frame_aspect_ratio ? // overridden by the -aspect cli option
503         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
504         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
505
506     return 0;
507 }
508 #endif /* CONFIG_AVFILTER */
509
510 static void term_exit(void)
511 {
512     av_log(NULL, AV_LOG_QUIET, "%s", "");
513 #if HAVE_TERMIOS_H
514     if(!run_as_daemon)
515         tcsetattr (0, TCSANOW, &oldtty);
516 #endif
517 }
518
519 static volatile int received_sigterm = 0;
520
521 static void sigterm_handler(int sig)
522 {
523     received_sigterm = sig;
524     q_pressed++;
525     term_exit();
526 }
527
528 static void term_init(void)
529 {
530 #if HAVE_TERMIOS_H
531     if(!run_as_daemon){
532     struct termios tty;
533
534     tcgetattr (0, &tty);
535     oldtty = tty;
536     atexit(term_exit);
537
538     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
539                           |INLCR|IGNCR|ICRNL|IXON);
540     tty.c_oflag |= OPOST;
541     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
542     tty.c_cflag &= ~(CSIZE|PARENB);
543     tty.c_cflag |= CS8;
544     tty.c_cc[VMIN] = 1;
545     tty.c_cc[VTIME] = 0;
546
547     tcsetattr (0, TCSANOW, &tty);
548     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
549     }
550 #endif
551
552     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
553     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
554 #ifdef SIGXCPU
555     signal(SIGXCPU, sigterm_handler);
556 #endif
557 }
558
559 /* read a key without blocking */
560 static int read_key(void)
561 {
562     unsigned char ch;
563 #if HAVE_TERMIOS_H
564     int n = 1;
565     struct timeval tv;
566     fd_set rfds;
567
568     if(run_as_daemon)
569         return -1;
570
571     FD_ZERO(&rfds);
572     FD_SET(0, &rfds);
573     tv.tv_sec = 0;
574     tv.tv_usec = 0;
575     n = select(1, &rfds, NULL, NULL, &tv);
576     if (n > 0) {
577         n = read(0, &ch, 1);
578         if (n == 1)
579             return ch;
580
581         return n;
582     }
583 #elif HAVE_KBHIT
584 #    if HAVE_PEEKNAMEDPIPE
585     static int is_pipe;
586     static HANDLE input_handle;
587     DWORD dw, nchars;
588     if(!input_handle){
589         input_handle = GetStdHandle(STD_INPUT_HANDLE);
590         is_pipe = !GetConsoleMode(input_handle, &dw);
591     }
592
593     if (stdin->_cnt > 0) {
594         read(0, &ch, 1);
595         return ch;
596     }
597     if (is_pipe) {
598         /* When running under a GUI, you will end here. */
599         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
600             return -1;
601         //Read it
602         if(nchars != 0) {
603             read(0, &ch, 1);
604             return ch;
605         }else{
606             return -1;
607         }
608     }
609 #    endif
610     if(kbhit())
611         return(getch());
612 #endif
613     return -1;
614 }
615
616 static int decode_interrupt_cb(void)
617 {
618     q_pressed += read_key() == 'q';
619     return q_pressed > 1;
620 }
621
622 void exit_program(int ret)
623 {
624     int i;
625
626     /* close files */
627     for(i=0;i<nb_output_files;i++) {
628         AVFormatContext *s = output_files[i].ctx;
629         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
630             avio_close(s->pb);
631         avformat_free_context(s);
632         av_dict_free(&output_files[i].opts);
633     }
634     for(i=0;i<nb_input_files;i++) {
635         av_close_input_file(input_files[i].ctx);
636     }
637     for (i = 0; i < nb_input_streams; i++)
638         av_dict_free(&input_streams[i].opts);
639
640     if (vstats_file)
641         fclose(vstats_file);
642     av_free(vstats_filename);
643
644     av_freep(&input_streams);
645     av_freep(&input_files);
646     av_freep(&output_streams);
647     av_freep(&output_files);
648
649     uninit_opts();
650     av_free(audio_buf);
651     av_free(audio_out);
652     allocated_audio_buf_size= allocated_audio_out_size= 0;
653     av_free(samples);
654
655 #if CONFIG_AVFILTER
656     avfilter_uninit();
657 #endif
658
659     av_freep(&input_tmp);
660
661     if (received_sigterm) {
662         fprintf(stderr,
663             "Received signal %d: terminating.\n",
664             (int) received_sigterm);
665         exit (255);
666     }
667
668     exit(ret); /* not all OS-es handle main() return value */
669 }
670
671 static void assert_avoptions(AVDictionary *m)
672 {
673     AVDictionaryEntry *t;
674     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
675         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
676         exit_program(1);
677     }
678 }
679
680 static void assert_codec_experimental(AVCodecContext *c, int encoder)
681 {
682     const char *codec_string = encoder ? "encoder" : "decoder";
683     AVCodec *codec;
684     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
685         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
686         av_log(NULL, AV_LOG_ERROR, "%s '%s' is experimental and might produce bad "
687                 "results.\nAdd '-strict experimental' if you want to use it.\n",
688                 codec_string, c->codec->name);
689         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
690         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
691             av_log(NULL, AV_LOG_ERROR, "Or use the non experimental %s '%s'.\n",
692                    codec_string, codec->name);
693         exit_program(1);
694     }
695 }
696
697 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
698 {
699     if(codec && codec->sample_fmts){
700         const enum AVSampleFormat *p= codec->sample_fmts;
701         for(; *p!=-1; p++){
702             if(*p == st->codec->sample_fmt)
703                 break;
704         }
705         if (*p == -1) {
706             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
707                 av_log(NULL, AV_LOG_ERROR, "Convertion will not be lossless'\n");
708             if(av_get_sample_fmt_name(st->codec->sample_fmt))
709             av_log(NULL, AV_LOG_WARNING,
710                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
711                    av_get_sample_fmt_name(st->codec->sample_fmt),
712                    codec->name,
713                    av_get_sample_fmt_name(codec->sample_fmts[0]));
714             st->codec->sample_fmt = codec->sample_fmts[0];
715         }
716     }
717 }
718
719 static void choose_sample_rate(AVStream *st, AVCodec *codec)
720 {
721     if(codec && codec->supported_samplerates){
722         const int *p= codec->supported_samplerates;
723         int best=0;
724         int best_dist=INT_MAX;
725         for(; *p; p++){
726             int dist= abs(st->codec->sample_rate - *p);
727             if(dist < best_dist){
728                 best_dist= dist;
729                 best= *p;
730             }
731         }
732         if(best_dist){
733             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
734         }
735         st->codec->sample_rate= best;
736     }
737 }
738
739 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
740 {
741     if(codec && codec->pix_fmts){
742         const enum PixelFormat *p= codec->pix_fmts;
743         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
744             if(st->codec->codec_id==CODEC_ID_MJPEG){
745                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
746             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
747                 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};
748             }
749         }
750         for(; *p!=-1; p++){
751             if(*p == st->codec->pix_fmt)
752                 break;
753         }
754         if (*p == -1) {
755             if(st->codec->pix_fmt != PIX_FMT_NONE)
756                 av_log(NULL, AV_LOG_WARNING,
757                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
758                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
759                         codec->name,
760                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
761             st->codec->pix_fmt = codec->pix_fmts[0];
762         }
763     }
764 }
765
766 static double get_sync_ipts(const OutputStream *ost)
767 {
768     const InputStream *ist = ost->sync_ist;
769     OutputFile *of = &output_files[ost->file_index];
770     return (double)(ist->pts - of->start_time)/AV_TIME_BASE;
771 }
772
773 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc)
774 {
775     int ret;
776
777     while(bsfc){
778         AVPacket new_pkt= *pkt;
779         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
780                                           &new_pkt.data, &new_pkt.size,
781                                           pkt->data, pkt->size,
782                                           pkt->flags & AV_PKT_FLAG_KEY);
783         if(a>0){
784             av_free_packet(pkt);
785             new_pkt.destruct= av_destruct_packet;
786         } else if(a<0){
787             fprintf(stderr, "%s failed for stream %d, codec %s",
788                     bsfc->filter->name, pkt->stream_index,
789                     avctx->codec ? avctx->codec->name : "copy");
790             print_error("", a);
791             if (exit_on_error)
792                 exit_program(1);
793         }
794         *pkt= new_pkt;
795
796         bsfc= bsfc->next;
797     }
798
799     ret= av_interleaved_write_frame(s, pkt);
800     if(ret < 0){
801         print_error("av_interleaved_write_frame()", ret);
802         exit_program(1);
803     }
804 }
805
806 static void do_audio_out(AVFormatContext *s,
807                          OutputStream *ost,
808                          InputStream *ist,
809                          unsigned char *buf, int size)
810 {
811     uint8_t *buftmp;
812     int64_t audio_out_size, audio_buf_size;
813     int64_t allocated_for_size= size;
814
815     int size_out, frame_bytes, ret, resample_changed;
816     AVCodecContext *enc= ost->st->codec;
817     AVCodecContext *dec= ist->st->codec;
818     int osize = av_get_bytes_per_sample(enc->sample_fmt);
819     int isize = av_get_bytes_per_sample(dec->sample_fmt);
820     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
821
822 need_realloc:
823     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
824     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
825     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
826     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
827     audio_buf_size*= osize*enc->channels;
828
829     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
830     if(coded_bps > 8*osize)
831         audio_out_size= audio_out_size * coded_bps / (8*osize);
832     audio_out_size += FF_MIN_BUFFER_SIZE;
833
834     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
835         fprintf(stderr, "Buffer sizes too large\n");
836         exit_program(1);
837     }
838
839     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
840     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
841     if (!audio_buf || !audio_out){
842         fprintf(stderr, "Out of memory in do_audio_out\n");
843         exit_program(1);
844     }
845
846     if (enc->channels != dec->channels
847      || enc->sample_fmt != dec->sample_fmt)
848         ost->audio_resample = 1;
849
850     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
851                        ost->resample_channels    != dec->channels   ||
852                        ost->resample_sample_rate != dec->sample_rate;
853
854     if ((ost->audio_resample && !ost->swr) || resample_changed) {
855         if (resample_changed) {
856             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",
857                    ist->file_index, ist->st->index,
858                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
859                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
860             ost->resample_sample_fmt  = dec->sample_fmt;
861             ost->resample_channels    = dec->channels;
862             ost->resample_sample_rate = dec->sample_rate;
863             swr_free(&ost->swr);
864         }
865         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
866         if (audio_sync_method <= 1 &&
867             ost->resample_sample_fmt  == enc->sample_fmt &&
868             ost->resample_channels    == enc->channels   &&
869             ost->resample_sample_rate == enc->sample_rate) {
870             //ost->swr = NULL;
871             ost->audio_resample = 0;
872         } else {
873             ost->swr = swr_alloc2(ost->swr,
874                                   enc->channel_layout, enc->sample_fmt, enc->sample_rate,
875                                   dec->channel_layout, dec->sample_fmt, dec->sample_rate,
876                                   0, NULL);
877             av_set_int(ost->swr, "ich", dec->channels);
878             av_set_int(ost->swr, "och", enc->channels);
879             if(audio_sync_method>1) av_set_int(ost->swr, "flags", SWR_FLAG_RESAMPLE);
880             if(ost->swr && swr_init(ost->swr) < 0){
881                 fprintf(stderr, "swr_init() failed\n");
882                 swr_free(&ost->swr);
883             }
884
885             if (!ost->swr) {
886                 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
887                         dec->channels, dec->sample_rate,
888                         enc->channels, enc->sample_rate);
889                 exit_program(1);
890             }
891         }
892     }
893
894     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
895
896     if(audio_sync_method){
897         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
898                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
899         double idelta= delta*dec->sample_rate / enc->sample_rate;
900         int byte_delta= ((int)idelta)*2*dec->channels;
901
902         //FIXME resample delay
903         if(fabs(delta) > 50){
904             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
905                 if(byte_delta < 0){
906                     byte_delta= FFMAX(byte_delta, -size);
907                     size += byte_delta;
908                     buf  -= byte_delta;
909                     if(verbose > 2)
910                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
911                     if(!size)
912                         return;
913                     ist->is_start=0;
914                 }else{
915                     input_tmp= av_realloc(input_tmp, byte_delta + size);
916
917                     if(byte_delta > allocated_for_size - size){
918                         allocated_for_size= byte_delta + (int64_t)size;
919                         goto need_realloc;
920                     }
921                     ist->is_start=0;
922
923                     memset(input_tmp, 0, byte_delta);
924                     memcpy(input_tmp + byte_delta, buf, size);
925                     buf= input_tmp;
926                     size += byte_delta;
927                     if(verbose > 2)
928                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
929                 }
930             }else if(audio_sync_method>1){
931                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
932                 av_assert0(ost->audio_resample);
933                 if(verbose > 2)
934                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
935 //                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));
936                 swr_compensate(ost->swr, comp, enc->sample_rate);
937             }
938         }
939     }else
940         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
941                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
942
943     if (ost->audio_resample) {
944         buftmp = audio_buf;
945         size_out = swr_convert(ost->swr, (      uint8_t*[]){buftmp}, audio_buf_size / (enc->channels * osize),
946                                          (const uint8_t*[]){buf   }, size / (dec->channels * isize));
947         size_out = size_out * enc->channels * osize;
948     } else {
949         buftmp = buf;
950         size_out = size;
951     }
952
953     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
954
955     /* now encode as many frames as possible */
956     if (enc->frame_size > 1) {
957         /* output resampled raw samples */
958         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
959             fprintf(stderr, "av_fifo_realloc2() failed\n");
960             exit_program(1);
961         }
962         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
963
964         frame_bytes = enc->frame_size * osize * enc->channels;
965
966         while (av_fifo_size(ost->fifo) >= frame_bytes) {
967             AVPacket pkt;
968             av_init_packet(&pkt);
969
970             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
971
972             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
973
974             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
975                                        (short *)audio_buf);
976             if (ret < 0) {
977                 fprintf(stderr, "Audio encoding failed\n");
978                 exit_program(1);
979             }
980             audio_size += ret;
981             pkt.stream_index= ost->index;
982             pkt.data= audio_out;
983             pkt.size= ret;
984             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
985                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
986             pkt.flags |= AV_PKT_FLAG_KEY;
987             write_frame(s, &pkt, enc, ost->bitstream_filters);
988
989             ost->sync_opts += enc->frame_size;
990         }
991     } else {
992         AVPacket pkt;
993         av_init_packet(&pkt);
994
995         ost->sync_opts += size_out / (osize * enc->channels);
996
997         /* output a pcm frame */
998         /* determine the size of the coded buffer */
999         size_out /= osize;
1000         if (coded_bps)
1001             size_out = size_out*coded_bps/8;
1002
1003         if(size_out > audio_out_size){
1004             fprintf(stderr, "Internal error, buffer size too small\n");
1005             exit_program(1);
1006         }
1007
1008         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1009         ret = avcodec_encode_audio(enc, audio_out, size_out,
1010                                    (short *)buftmp);
1011         if (ret < 0) {
1012             fprintf(stderr, "Audio encoding failed\n");
1013             exit_program(1);
1014         }
1015         audio_size += ret;
1016         pkt.stream_index= ost->index;
1017         pkt.data= audio_out;
1018         pkt.size= ret;
1019         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1020             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1021         pkt.flags |= AV_PKT_FLAG_KEY;
1022         write_frame(s, &pkt, enc, ost->bitstream_filters);
1023     }
1024 }
1025
1026 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1027 {
1028     AVCodecContext *dec;
1029     AVPicture *picture2;
1030     AVPicture picture_tmp;
1031     uint8_t *buf = 0;
1032
1033     dec = ist->st->codec;
1034
1035     /* deinterlace : must be done before any resize */
1036     if (do_deinterlace) {
1037         int size;
1038
1039         /* create temporary picture */
1040         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1041         buf = av_malloc(size);
1042         if (!buf)
1043             return;
1044
1045         picture2 = &picture_tmp;
1046         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1047
1048         if(avpicture_deinterlace(picture2, picture,
1049                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1050             /* if error, do not deinterlace */
1051             fprintf(stderr, "Deinterlacing failed\n");
1052             av_free(buf);
1053             buf = NULL;
1054             picture2 = picture;
1055         }
1056     } else {
1057         picture2 = picture;
1058     }
1059
1060     if (picture != picture2)
1061         *picture = *picture2;
1062     *bufp = buf;
1063 }
1064
1065 static void do_subtitle_out(AVFormatContext *s,
1066                             OutputStream *ost,
1067                             InputStream *ist,
1068                             AVSubtitle *sub,
1069                             int64_t pts)
1070 {
1071     static uint8_t *subtitle_out = NULL;
1072     int subtitle_out_max_size = 1024 * 1024;
1073     int subtitle_out_size, nb, i;
1074     AVCodecContext *enc;
1075     AVPacket pkt;
1076
1077     if (pts == AV_NOPTS_VALUE) {
1078         fprintf(stderr, "Subtitle packets must have a pts\n");
1079         if (exit_on_error)
1080             exit_program(1);
1081         return;
1082     }
1083
1084     enc = ost->st->codec;
1085
1086     if (!subtitle_out) {
1087         subtitle_out = av_malloc(subtitle_out_max_size);
1088     }
1089
1090     /* Note: DVB subtitle need one packet to draw them and one other
1091        packet to clear them */
1092     /* XXX: signal it in the codec context ? */
1093     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1094         nb = 2;
1095     else
1096         nb = 1;
1097
1098     for(i = 0; i < nb; i++) {
1099         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1100         // start_display_time is required to be 0
1101         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1102         sub->end_display_time -= sub->start_display_time;
1103         sub->start_display_time = 0;
1104         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1105                                                     subtitle_out_max_size, sub);
1106         if (subtitle_out_size < 0) {
1107             fprintf(stderr, "Subtitle encoding failed\n");
1108             exit_program(1);
1109         }
1110
1111         av_init_packet(&pkt);
1112         pkt.stream_index = ost->index;
1113         pkt.data = subtitle_out;
1114         pkt.size = subtitle_out_size;
1115         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1116         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1117             /* XXX: the pts correction is handled here. Maybe handling
1118                it in the codec would be better */
1119             if (i == 0)
1120                 pkt.pts += 90 * sub->start_display_time;
1121             else
1122                 pkt.pts += 90 * sub->end_display_time;
1123         }
1124         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1125     }
1126 }
1127
1128 static int bit_buffer_size= 1024*256;
1129 static uint8_t *bit_buffer= NULL;
1130
1131 static void do_video_resample(OutputStream *ost,
1132                               InputStream *ist,
1133                               AVFrame *in_picture,
1134                               AVFrame **out_picture)
1135 {
1136 #if CONFIG_AVFILTER
1137     *out_picture = in_picture;
1138 #else
1139     AVCodecContext *dec = ist->st->codec;
1140     AVCodecContext *enc = ost->st->codec;
1141     int resample_changed = ost->resample_width   != dec->width  ||
1142                            ost->resample_height  != dec->height ||
1143                            ost->resample_pix_fmt != dec->pix_fmt;
1144
1145     *out_picture = in_picture;
1146     if (resample_changed) {
1147         av_log(NULL, AV_LOG_INFO,
1148                "Input stream #%d.%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1149                ist->file_index, ist->st->index,
1150                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1151                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1152         ost->resample_width   = dec->width;
1153         ost->resample_height  = dec->height;
1154         ost->resample_pix_fmt = dec->pix_fmt;
1155     }
1156
1157     ost->video_resample = dec->width   != enc->width  ||
1158                           dec->height  != enc->height ||
1159                           dec->pix_fmt != enc->pix_fmt;
1160
1161     if (ost->video_resample) {
1162         *out_picture = &ost->resample_frame;
1163         if (!ost->img_resample_ctx || resample_changed) {
1164             /* initialize the destination picture */
1165             if (!ost->resample_frame.data[0]) {
1166                 avcodec_get_frame_defaults(&ost->resample_frame);
1167                 if (avpicture_alloc((AVPicture *)&ost->resample_frame, enc->pix_fmt,
1168                                     enc->width, enc->height)) {
1169                     fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
1170                     exit_program(1);
1171                 }
1172             }
1173             /* initialize a new scaler context */
1174             sws_freeContext(ost->img_resample_ctx);
1175             ost->img_resample_ctx = sws_getContext(dec->width, dec->height, dec->pix_fmt,
1176                                                    enc->width, enc->height, enc->pix_fmt,
1177                                                    ost->sws_flags, NULL, NULL, NULL);
1178             if (ost->img_resample_ctx == NULL) {
1179                 fprintf(stderr, "Cannot get resampling context\n");
1180                 exit_program(1);
1181             }
1182         }
1183         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1184               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1185     }
1186 #endif
1187 }
1188
1189
1190 static void do_video_out(AVFormatContext *s,
1191                          OutputStream *ost,
1192                          InputStream *ist,
1193                          AVFrame *in_picture,
1194                          int *frame_size, float quality)
1195 {
1196     int nb_frames, i, ret, format_video_sync;
1197     AVFrame *final_picture;
1198     AVCodecContext *enc;
1199     double sync_ipts;
1200     double duration = 0;
1201
1202     enc = ost->st->codec;
1203
1204     if (ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE) {
1205         duration = FFMAX(av_q2d(ist->st->time_base), av_q2d(ist->st->codec->time_base));
1206         if(ist->st->avg_frame_rate.num)
1207             duration= FFMAX(duration, 1/av_q2d(ist->st->avg_frame_rate));
1208
1209         duration /= av_q2d(enc->time_base);
1210     }
1211
1212     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1213
1214     /* by default, we output a single frame */
1215     nb_frames = 1;
1216
1217     *frame_size = 0;
1218
1219     format_video_sync = video_sync_method;
1220     if (format_video_sync < 0)
1221         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? 2 : 1;
1222
1223     if (format_video_sync) {
1224         double vdelta = sync_ipts - ost->sync_opts + duration;
1225         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1226         if (vdelta < -1.1)
1227             nb_frames = 0;
1228         else if (format_video_sync == 2) {
1229             if(vdelta<=-0.6){
1230                 nb_frames=0;
1231             }else if(vdelta>0.6)
1232                 ost->sync_opts= lrintf(sync_ipts);
1233         }else if (vdelta > 1.1)
1234             nb_frames = lrintf(vdelta);
1235 //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);
1236         if (nb_frames == 0){
1237             ++nb_frames_drop;
1238             if (verbose>2)
1239                 fprintf(stderr, "*** drop!\n");
1240         }else if (nb_frames > 1) {
1241             nb_frames_dup += nb_frames - 1;
1242             if (verbose>2)
1243                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1244         }
1245     }else
1246         ost->sync_opts= lrintf(sync_ipts);
1247
1248     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1249     if (nb_frames <= 0)
1250         return;
1251
1252     do_video_resample(ost, ist, in_picture, &final_picture);
1253
1254     /* duplicates frame if needed */
1255     for(i=0;i<nb_frames;i++) {
1256         AVPacket pkt;
1257         av_init_packet(&pkt);
1258         pkt.stream_index= ost->index;
1259
1260         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1261             /* raw pictures are written as AVPicture structure to
1262                avoid any copies. We support temporarily the older
1263                method. */
1264             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1265             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1266             pkt.data= (uint8_t *)final_picture;
1267             pkt.size=  sizeof(AVPicture);
1268             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1269             pkt.flags |= AV_PKT_FLAG_KEY;
1270
1271             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1272         } else {
1273             AVFrame big_picture;
1274
1275             big_picture= *final_picture;
1276             /* better than nothing: use input picture interlaced
1277                settings */
1278             big_picture.interlaced_frame = in_picture->interlaced_frame;
1279             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1280                 if (ost->top_field_first == -1)
1281                     big_picture.top_field_first = in_picture->top_field_first;
1282                 else
1283                     big_picture.top_field_first = !!ost->top_field_first;
1284             }
1285
1286             /* handles same_quant here. This is not correct because it may
1287                not be a global option */
1288             big_picture.quality = quality;
1289             if (!enc->me_threshold)
1290                 big_picture.pict_type = 0;
1291 //            big_picture.pts = AV_NOPTS_VALUE;
1292             big_picture.pts= ost->sync_opts;
1293 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1294 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1295             if (ost->forced_kf_index < ost->forced_kf_count &&
1296                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1297                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1298                 ost->forced_kf_index++;
1299             }
1300             ret = avcodec_encode_video(enc,
1301                                        bit_buffer, bit_buffer_size,
1302                                        &big_picture);
1303             if (ret < 0) {
1304                 fprintf(stderr, "Video encoding failed\n");
1305                 exit_program(1);
1306             }
1307
1308             if(ret>0){
1309                 pkt.data= bit_buffer;
1310                 pkt.size= ret;
1311                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1312                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1313 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1314    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1315    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1316
1317                 if(enc->coded_frame->key_frame)
1318                     pkt.flags |= AV_PKT_FLAG_KEY;
1319                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1320                 *frame_size = ret;
1321                 video_size += ret;
1322                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1323                 //        enc->frame_number-1, ret, enc->pict_type);
1324                 /* if two pass, output log */
1325                 if (ost->logfile && enc->stats_out) {
1326                     fprintf(ost->logfile, "%s", enc->stats_out);
1327                 }
1328             }
1329         }
1330         ost->sync_opts++;
1331         ost->frame_number++;
1332     }
1333 }
1334
1335 static double psnr(double d)
1336 {
1337     return -10.0*log(d)/log(10.0);
1338 }
1339
1340 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1341                            int frame_size)
1342 {
1343     AVCodecContext *enc;
1344     int frame_number;
1345     double ti1, bitrate, avg_bitrate;
1346
1347     /* this is executed just the first time do_video_stats is called */
1348     if (!vstats_file) {
1349         vstats_file = fopen(vstats_filename, "w");
1350         if (!vstats_file) {
1351             perror("fopen");
1352             exit_program(1);
1353         }
1354     }
1355
1356     enc = ost->st->codec;
1357     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1358         frame_number = ost->frame_number;
1359         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1360         if (enc->flags&CODEC_FLAG_PSNR)
1361             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1362
1363         fprintf(vstats_file,"f_size= %6d ", frame_size);
1364         /* compute pts value */
1365         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1366         if (ti1 < 0.01)
1367             ti1 = 0.01;
1368
1369         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1370         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1371         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1372             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1373         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1374     }
1375 }
1376
1377 static void print_report(OutputFile *output_files,
1378                          OutputStream *ost_table, int nb_ostreams,
1379                          int is_last_report, int64_t timer_start)
1380 {
1381     char buf[1024];
1382     OutputStream *ost;
1383     AVFormatContext *oc;
1384     int64_t total_size;
1385     AVCodecContext *enc;
1386     int frame_number, vid, i;
1387     double bitrate;
1388     int64_t pts = INT64_MAX;
1389     static int64_t last_time = -1;
1390     static int qp_histogram[52];
1391
1392     if (!is_last_report) {
1393         int64_t cur_time;
1394         /* display the report every 0.5 seconds */
1395         cur_time = av_gettime();
1396         if (last_time == -1) {
1397             last_time = cur_time;
1398             return;
1399         }
1400         if ((cur_time - last_time) < 500000)
1401             return;
1402         last_time = cur_time;
1403     }
1404
1405
1406     oc = output_files[0].ctx;
1407
1408     total_size = avio_size(oc->pb);
1409     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1410         total_size= avio_tell(oc->pb);
1411
1412     buf[0] = '\0';
1413     vid = 0;
1414     for(i=0;i<nb_ostreams;i++) {
1415         float q = -1;
1416         ost = &ost_table[i];
1417         enc = ost->st->codec;
1418         if (!ost->st->stream_copy && enc->coded_frame)
1419             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1420         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1421             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1422         }
1423         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1424             float t = (av_gettime()-timer_start) / 1000000.0;
1425
1426             frame_number = ost->frame_number;
1427             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1428                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1429             if(is_last_report)
1430                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1431             if(qp_hist){
1432                 int j;
1433                 int qp = lrintf(q);
1434                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1435                     qp_histogram[qp]++;
1436                 for(j=0; j<32; j++)
1437                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1438             }
1439             if (enc->flags&CODEC_FLAG_PSNR){
1440                 int j;
1441                 double error, error_sum=0;
1442                 double scale, scale_sum=0;
1443                 char type[3]= {'Y','U','V'};
1444                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1445                 for(j=0; j<3; j++){
1446                     if(is_last_report){
1447                         error= enc->error[j];
1448                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1449                     }else{
1450                         error= enc->coded_frame->error[j];
1451                         scale= enc->width*enc->height*255.0*255.0;
1452                     }
1453                     if(j) scale/=4;
1454                     error_sum += error;
1455                     scale_sum += scale;
1456                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1457                 }
1458                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1459             }
1460             vid = 1;
1461         }
1462         /* compute min output value */
1463         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
1464                                       ost->st->time_base, AV_TIME_BASE_Q));
1465     }
1466
1467     if (verbose > 0 || is_last_report) {
1468         int hours, mins, secs, us;
1469         secs = pts / AV_TIME_BASE;
1470         us = pts % AV_TIME_BASE;
1471         mins = secs / 60;
1472         secs %= 60;
1473         hours = mins / 60;
1474         mins %= 60;
1475
1476         bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1477
1478         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1479                  "size=%8.0fkB time=", total_size / 1024.0);
1480         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1481                  "%02d:%02d:%02d.%02d ", hours, mins, secs,
1482                  (100 * us) / AV_TIME_BASE);
1483         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1484                  "bitrate=%6.1fkbits/s", bitrate);
1485
1486         if (nb_frames_dup || nb_frames_drop)
1487           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1488                   nb_frames_dup, nb_frames_drop);
1489
1490         if (verbose >= 0)
1491             fprintf(stderr, "%s    \r", buf);
1492
1493         fflush(stderr);
1494     }
1495
1496     if (is_last_report && verbose >= 0){
1497         int64_t raw= audio_size + video_size + extra_size;
1498         fprintf(stderr, "\n");
1499         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1500                 video_size/1024.0,
1501                 audio_size/1024.0,
1502                 extra_size/1024.0,
1503                 100.0*(total_size - raw)/raw
1504         );
1505     }
1506 }
1507
1508 static void generate_silence(uint8_t *buf, enum AVSampleFormat sample_fmt, size_t size)
1509 {
1510     int fill_char = 0x00;
1511     if (sample_fmt == AV_SAMPLE_FMT_U8)
1512         fill_char = 0x80;
1513     memset(buf, fill_char, size);
1514 }
1515
1516 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1517 {
1518     int i, ret;
1519
1520     for (i = 0; i < nb_ostreams; i++) {
1521         OutputStream   *ost = &ost_table[i];
1522         AVCodecContext *enc = ost->st->codec;
1523         AVFormatContext *os = output_files[ost->file_index].ctx;
1524
1525         if (!ost->encoding_needed)
1526             continue;
1527
1528         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1529             continue;
1530         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1531             continue;
1532
1533         for(;;) {
1534             AVPacket pkt;
1535             int fifo_bytes;
1536             av_init_packet(&pkt);
1537             pkt.stream_index= ost->index;
1538
1539             switch (ost->st->codec->codec_type) {
1540             case AVMEDIA_TYPE_AUDIO:
1541                 fifo_bytes = av_fifo_size(ost->fifo);
1542                 ret = 0;
1543                 /* encode any samples remaining in fifo */
1544                 if (fifo_bytes > 0) {
1545                     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1546                     int fs_tmp = enc->frame_size;
1547
1548                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1549                     if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1550                         enc->frame_size = fifo_bytes / (osize * enc->channels);
1551                     } else { /* pad */
1552                         int frame_bytes = enc->frame_size*osize*enc->channels;
1553                         if (allocated_audio_buf_size < frame_bytes)
1554                             exit_program(1);
1555                         generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1556                     }
1557
1558                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1559                     pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1560                                               ost->st->time_base.num, enc->sample_rate);
1561                     enc->frame_size = fs_tmp;
1562                 }
1563                 if (ret <= 0) {
1564                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1565                 }
1566                 if (ret < 0) {
1567                     fprintf(stderr, "Audio encoding failed\n");
1568                     exit_program(1);
1569                 }
1570                 audio_size += ret;
1571                 pkt.flags |= AV_PKT_FLAG_KEY;
1572                 break;
1573             case AVMEDIA_TYPE_VIDEO:
1574                 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1575                 if (ret < 0) {
1576                     fprintf(stderr, "Video encoding failed\n");
1577                     exit_program(1);
1578                 }
1579                 video_size += ret;
1580                 if(enc->coded_frame && enc->coded_frame->key_frame)
1581                     pkt.flags |= AV_PKT_FLAG_KEY;
1582                 if (ost->logfile && enc->stats_out) {
1583                     fprintf(ost->logfile, "%s", enc->stats_out);
1584                 }
1585                 break;
1586             default:
1587                 ret=-1;
1588             }
1589
1590             if (ret <= 0)
1591                 break;
1592             pkt.data = bit_buffer;
1593             pkt.size = ret;
1594             if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1595                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1596             write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1597         }
1598     }
1599 }
1600
1601 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1602 static int output_packet(InputStream *ist, int ist_index,
1603                          OutputStream *ost_table, int nb_ostreams,
1604                          const AVPacket *pkt)
1605 {
1606     AVFormatContext *os;
1607     OutputStream *ost;
1608     int ret, i;
1609     int got_output;
1610     AVFrame picture;
1611     void *buffer_to_free = NULL;
1612     static unsigned int samples_size= 0;
1613     AVSubtitle subtitle, *subtitle_to_free;
1614     int64_t pkt_pts = AV_NOPTS_VALUE;
1615 #if CONFIG_AVFILTER
1616     int frame_available;
1617 #endif
1618     float quality;
1619
1620     AVPacket avpkt;
1621     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1622
1623     if(ist->next_pts == AV_NOPTS_VALUE)
1624         ist->next_pts= ist->pts;
1625
1626     if (pkt == NULL) {
1627         /* EOF handling */
1628         av_init_packet(&avpkt);
1629         avpkt.data = NULL;
1630         avpkt.size = 0;
1631         goto handle_eof;
1632     } else {
1633         avpkt = *pkt;
1634     }
1635
1636     if(pkt->dts != AV_NOPTS_VALUE)
1637         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1638     if(pkt->pts != AV_NOPTS_VALUE)
1639         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1640
1641     //while we have more to decode or while the decoder did output something on EOF
1642     while (avpkt.size > 0 || (!pkt && got_output)) {
1643         uint8_t *data_buf, *decoded_data_buf;
1644         int data_size, decoded_data_size;
1645     handle_eof:
1646         ist->pts= ist->next_pts;
1647
1648         if(avpkt.size && avpkt.size != pkt->size &&
1649            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1650             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1651             ist->showed_multi_packet_warning=1;
1652         }
1653
1654         /* decode the packet if needed */
1655         decoded_data_buf = NULL; /* fail safe */
1656         decoded_data_size= 0;
1657         data_buf  = avpkt.data;
1658         data_size = avpkt.size;
1659         subtitle_to_free = NULL;
1660         if (ist->decoding_needed) {
1661             switch(ist->st->codec->codec_type) {
1662             case AVMEDIA_TYPE_AUDIO:{
1663                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1664                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1665                     av_free(samples);
1666                     samples= av_malloc(samples_size);
1667                 }
1668                 decoded_data_size= samples_size;
1669                     /* XXX: could avoid copy if PCM 16 bits with same
1670                        endianness as CPU */
1671                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1672                                             &avpkt);
1673                 if (ret < 0)
1674                     return ret;
1675                 avpkt.data += ret;
1676                 avpkt.size -= ret;
1677                 data_size   = ret;
1678                 got_output  = decoded_data_size > 0;
1679                 /* Some bug in mpeg audio decoder gives */
1680                 /* decoded_data_size < 0, it seems they are overflows */
1681                 if (!got_output) {
1682                     /* no audio frame */
1683                     continue;
1684                 }
1685                 decoded_data_buf = (uint8_t *)samples;
1686                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1687                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1688                 break;}
1689             case AVMEDIA_TYPE_VIDEO:
1690                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1691                     /* XXX: allocate picture correctly */
1692                     avcodec_get_frame_defaults(&picture);
1693                     avpkt.pts = pkt_pts;
1694                     avpkt.dts = ist->pts;
1695                     pkt_pts = AV_NOPTS_VALUE;
1696
1697                     ret = avcodec_decode_video2(ist->st->codec,
1698                                                 &picture, &got_output, &avpkt);
1699                     quality = same_quant ? picture.quality : 0;
1700                     if (ret < 0)
1701                         return ret;
1702                     if (!got_output) {
1703                         /* no picture yet */
1704                         goto discard_packet;
1705                     }
1706                     ist->next_pts = ist->pts = picture.best_effort_timestamp;
1707                     if (ist->st->codec->time_base.num != 0) {
1708                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1709                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1710                                           ist->st->codec->time_base.num * ticks) /
1711                             ist->st->codec->time_base.den;
1712                     }
1713                     avpkt.size = 0;
1714                     buffer_to_free = NULL;
1715                     pre_process_video_frame(ist, (AVPicture *)&picture, &buffer_to_free);
1716                     break;
1717             case AVMEDIA_TYPE_SUBTITLE:
1718                 ret = avcodec_decode_subtitle2(ist->st->codec,
1719                                                &subtitle, &got_output, &avpkt);
1720                 if (ret < 0)
1721                     return ret;
1722                 if (!got_output) {
1723                     goto discard_packet;
1724                 }
1725                 subtitle_to_free = &subtitle;
1726                 avpkt.size = 0;
1727                 break;
1728             default:
1729                 return -1;
1730             }
1731         } else {
1732             switch(ist->st->codec->codec_type) {
1733             case AVMEDIA_TYPE_AUDIO:
1734                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1735                     ist->st->codec->sample_rate;
1736                 break;
1737             case AVMEDIA_TYPE_VIDEO:
1738                 if (ist->st->codec->time_base.num != 0) {
1739                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1740                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1741                                       ist->st->codec->time_base.num * ticks) /
1742                         ist->st->codec->time_base.den;
1743                 }
1744                 break;
1745             }
1746             avpkt.size = 0;
1747         }
1748
1749 #if CONFIG_AVFILTER
1750         if(ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
1751         for(i=0;i<nb_ostreams;i++) {
1752             OutputFile *of = &output_files[ost_table[i].file_index];
1753             if (of->start_time == 0 || ist->pts >= of->start_time) {
1754                 ost = &ost_table[i];
1755                 if (ost->input_video_filter && ost->source_index == ist_index) {
1756                     if (!picture.sample_aspect_ratio.num)
1757                         picture.sample_aspect_ratio = ist->st->sample_aspect_ratio;
1758                     picture.pts = ist->pts;
1759
1760                     av_vsrc_buffer_add_frame(ost->input_video_filter, &picture, AV_VSRC_BUF_FLAG_OVERWRITE);
1761                 }
1762             }
1763         }
1764 #endif
1765
1766         // preprocess audio (volume)
1767         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1768             if (audio_volume != 256) {
1769                 short *volp;
1770                 volp = samples;
1771                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1772                     int v = ((*volp) * audio_volume + 128) >> 8;
1773                     *volp++ = av_clip_int16(v);
1774                 }
1775             }
1776         }
1777
1778         /* frame rate emulation */
1779         if (input_files[ist->file_index].rate_emu) {
1780             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1781             int64_t now = av_gettime() - ist->start;
1782             if (pts > now)
1783                 usleep(pts - now);
1784         }
1785         /* if output time reached then transcode raw format,
1786            encode packets and output them */
1787         for (i = 0; i < nb_ostreams; i++) {
1788             OutputFile *of = &output_files[ost_table[i].file_index];
1789             int frame_size;
1790
1791             ost = &ost_table[i];
1792             if (ost->source_index != ist_index)
1793                 continue;
1794
1795             if (of->start_time && ist->pts < of->start_time)
1796                 continue;
1797
1798             if (of->recording_time != INT64_MAX &&
1799                 av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1800                               (AVRational){1, 1000000}) >= 0) {
1801                 ost->is_past_recording_time = 1;
1802                 continue;
1803             }
1804
1805 #if CONFIG_AVFILTER
1806             frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1807                 !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1808             while (frame_available) {
1809                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter) {
1810                     AVRational ist_pts_tb = ost->output_video_filter->inputs[0]->time_base;
1811                     if (av_buffersink_get_buffer_ref(ost->output_video_filter, &ost->picref, 0) < 0)
1812                         goto cont;
1813                     if (ost->picref) {
1814                         avfilter_fill_frame_from_video_buffer_ref(&picture, ost->picref);
1815                         ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1816                     }
1817                 }
1818 #endif
1819                 os = output_files[ost->file_index].ctx;
1820
1821                 /* set the input output pts pairs */
1822                 //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
1823
1824                 if (ost->encoding_needed) {
1825                     av_assert0(ist->decoding_needed);
1826                     switch(ost->st->codec->codec_type) {
1827                     case AVMEDIA_TYPE_AUDIO:
1828                         do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1829                         break;
1830                     case AVMEDIA_TYPE_VIDEO:
1831 #if CONFIG_AVFILTER
1832                         if (ost->picref->video && !ost->frame_aspect_ratio)
1833                             ost->st->codec->sample_aspect_ratio = ost->picref->video->sample_aspect_ratio;
1834 #endif
1835                         do_video_out(os, ost, ist, &picture, &frame_size,
1836                                         same_quant ? quality : ost->st->codec->global_quality);
1837                         if (vstats_filename && frame_size)
1838                             do_video_stats(os, ost, frame_size);
1839                         break;
1840                     case AVMEDIA_TYPE_SUBTITLE:
1841                         do_subtitle_out(os, ost, ist, &subtitle,
1842                                         pkt->pts);
1843                         break;
1844                     default:
1845                         abort();
1846                     }
1847                 } else {
1848                     AVFrame avframe; //FIXME/XXX remove this
1849                     AVPicture pict;
1850                     AVPacket opkt;
1851                     int64_t ost_tb_start_time= av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1852                     av_init_packet(&opkt);
1853
1854                     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1855 #if !CONFIG_AVFILTER
1856                         continue;
1857 #else
1858                         goto cont;
1859 #endif
1860
1861                     /* no reencoding needed : output the packet directly */
1862                     /* force the input stream PTS */
1863
1864                     avcodec_get_frame_defaults(&avframe);
1865                     ost->st->codec->coded_frame= &avframe;
1866                     avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1867
1868                     if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1869                         audio_size += data_size;
1870                     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1871                         video_size += data_size;
1872                         ost->sync_opts++;
1873                     }
1874
1875                     opkt.stream_index= ost->index;
1876                     if(pkt->pts != AV_NOPTS_VALUE)
1877                         opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1878                     else
1879                         opkt.pts= AV_NOPTS_VALUE;
1880
1881                     if (pkt->dts == AV_NOPTS_VALUE)
1882                         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1883                     else
1884                         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1885                     opkt.dts -= ost_tb_start_time;
1886
1887                     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1888                     opkt.flags= pkt->flags;
1889
1890                     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1891                     if(   ost->st->codec->codec_id != CODEC_ID_H264
1892                        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1893                        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1894                        ) {
1895                         if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1896                             opkt.destruct= av_destruct_packet;
1897                     } else {
1898                         opkt.data = data_buf;
1899                         opkt.size = data_size;
1900                     }
1901
1902                     if (os->oformat->flags & AVFMT_RAWPICTURE) {
1903                         /* store AVPicture in AVPacket, as expected by the output format */
1904                         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1905                         opkt.data = (uint8_t *)&pict;
1906                         opkt.size = sizeof(AVPicture);
1907                         opkt.flags |= AV_PKT_FLAG_KEY;
1908                     }
1909                     write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1910                     ost->st->codec->frame_number++;
1911                     ost->frame_number++;
1912                     av_free_packet(&opkt);
1913                 }
1914 #if CONFIG_AVFILTER
1915                 cont:
1916                 frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1917                                    ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1918                 avfilter_unref_buffer(ost->picref);
1919             }
1920 #endif
1921         }
1922
1923         av_free(buffer_to_free);
1924         /* XXX: allocate the subtitles in the codec ? */
1925         if (subtitle_to_free) {
1926             avsubtitle_free(subtitle_to_free);
1927             subtitle_to_free = NULL;
1928         }
1929     }
1930  discard_packet:
1931
1932     return 0;
1933 }
1934
1935 static void print_sdp(OutputFile *output_files, int n)
1936 {
1937     char sdp[2048];
1938     int i;
1939     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
1940
1941     if (!avc)
1942         exit_program(1);
1943     for (i = 0; i < n; i++)
1944         avc[i] = output_files[i].ctx;
1945
1946     av_sdp_create(avc, n, sdp, sizeof(sdp));
1947     printf("SDP:\n%s\n", sdp);
1948     fflush(stdout);
1949     av_freep(&avc);
1950 }
1951
1952 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
1953                              char *error, int error_len)
1954 {
1955     InputStream *ist = &input_streams[ist_index];
1956     if (ist->decoding_needed) {
1957         AVCodec *codec = ist->dec;
1958         if (!codec) {
1959             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d.%d",
1960                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1961             return AVERROR(EINVAL);
1962         }
1963         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
1964             snprintf(error, error_len, "Error while opening decoder for input stream #%d.%d",
1965                     ist->file_index, ist->st->index);
1966             return AVERROR(EINVAL);
1967         }
1968         assert_codec_experimental(ist->st->codec, 0);
1969         assert_avoptions(ist->opts);
1970     }
1971
1972     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;
1973     ist->next_pts = AV_NOPTS_VALUE;
1974     ist->is_start = 1;
1975
1976     return 0;
1977 }
1978
1979 static int transcode_init(OutputFile *output_files, int nb_output_files,
1980                           InputFile  *input_files,  int nb_input_files)
1981 {
1982     int ret = 0, i, j, k;
1983     AVFormatContext *os;
1984     AVCodecContext *codec, *icodec;
1985     OutputStream *ost;
1986     InputStream *ist;
1987     char error[1024];
1988     int want_sdp = 1;
1989
1990     /* init framerate emulation */
1991     for (i = 0; i < nb_input_files; i++) {
1992         InputFile *ifile = &input_files[i];
1993         if (ifile->rate_emu)
1994             for (j = 0; j < ifile->nb_streams; j++)
1995                 input_streams[j + ifile->ist_index].start = av_gettime();
1996     }
1997
1998     /* output stream init */
1999     for(i=0;i<nb_output_files;i++) {
2000         os = output_files[i].ctx;
2001         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
2002             av_dump_format(os, i, os->filename, 1);
2003             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
2004             return AVERROR(EINVAL);
2005         }
2006     }
2007
2008     /* for each output stream, we compute the right encoding parameters */
2009     for (i = 0; i < nb_output_streams; i++) {
2010         ost = &output_streams[i];
2011         os = output_files[ost->file_index].ctx;
2012         ist = &input_streams[ost->source_index];
2013
2014         codec = ost->st->codec;
2015         icodec = ist->st->codec;
2016
2017         ost->st->disposition = ist->st->disposition;
2018         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2019         codec->chroma_sample_location = icodec->chroma_sample_location;
2020
2021         if (ost->st->stream_copy) {
2022             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2023
2024             if (extra_size > INT_MAX) {
2025                 return AVERROR(EINVAL);
2026             }
2027
2028             /* if stream_copy is selected, no need to decode or encode */
2029             codec->codec_id = icodec->codec_id;
2030             codec->codec_type = icodec->codec_type;
2031
2032             if(!codec->codec_tag){
2033                 if(   !os->oformat->codec_tag
2034                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2035                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2036                     codec->codec_tag = icodec->codec_tag;
2037             }
2038
2039             codec->bit_rate = icodec->bit_rate;
2040             codec->rc_max_rate    = icodec->rc_max_rate;
2041             codec->rc_buffer_size = icodec->rc_buffer_size;
2042             codec->extradata= av_mallocz(extra_size);
2043             if (!codec->extradata) {
2044                 return AVERROR(ENOMEM);
2045             }
2046             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2047             codec->extradata_size= icodec->extradata_size;
2048
2049             codec->time_base = ist->st->time_base;
2050             if(!strcmp(os->oformat->name, "avi")) {
2051                 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){
2052                     codec->time_base = icodec->time_base;
2053                     codec->time_base.num *= icodec->ticks_per_frame;
2054                     codec->time_base.den *= 2;
2055                 }
2056             } else if(!(os->oformat->flags & AVFMT_VARIABLE_FPS)) {
2057                 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){
2058                     codec->time_base = icodec->time_base;
2059                     codec->time_base.num *= icodec->ticks_per_frame;
2060                 }
2061             }
2062             av_reduce(&codec->time_base.num, &codec->time_base.den,
2063                         codec->time_base.num, codec->time_base.den, INT_MAX);
2064
2065             switch(codec->codec_type) {
2066             case AVMEDIA_TYPE_AUDIO:
2067                 if(audio_volume != 256) {
2068                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2069                     exit_program(1);
2070                 }
2071                 codec->channel_layout = icodec->channel_layout;
2072                 codec->sample_rate = icodec->sample_rate;
2073                 codec->channels = icodec->channels;
2074                 codec->frame_size = icodec->frame_size;
2075                 codec->audio_service_type = icodec->audio_service_type;
2076                 codec->block_align= icodec->block_align;
2077                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2078                     codec->block_align= 0;
2079                 if(codec->codec_id == CODEC_ID_AC3)
2080                     codec->block_align= 0;
2081                 break;
2082             case AVMEDIA_TYPE_VIDEO:
2083                 codec->pix_fmt = icodec->pix_fmt;
2084                 codec->width = icodec->width;
2085                 codec->height = icodec->height;
2086                 codec->has_b_frames = icodec->has_b_frames;
2087                 if (!codec->sample_aspect_ratio.num) {
2088                     codec->sample_aspect_ratio =
2089                     ost->st->sample_aspect_ratio =
2090                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2091                         ist->st->codec->sample_aspect_ratio.num ?
2092                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2093                 }
2094                 break;
2095             case AVMEDIA_TYPE_SUBTITLE:
2096                 codec->width = icodec->width;
2097                 codec->height = icodec->height;
2098                 break;
2099             case AVMEDIA_TYPE_DATA:
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                     fprintf(stderr, "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                     fprintf(stderr, "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                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2206                         exit_program(1);
2207                     }
2208                     ost->logfile = f;
2209                 } else {
2210                     char  *logbuffer;
2211                     size_t logbuffer_size;
2212                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2213                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2214                         exit_program(1);
2215                     }
2216                     codec->stats_in = logbuffer;
2217                 }
2218             }
2219         }
2220         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2221             /* maximum video buffer size is 6-bytes per pixel, plus DPX header size (1664)*/
2222             int size= codec->width * codec->height;
2223             bit_buffer_size= FFMAX(bit_buffer_size, 7*size + 10000);
2224         }
2225     }
2226
2227     if (!bit_buffer)
2228         bit_buffer = av_malloc(bit_buffer_size);
2229     if (!bit_buffer) {
2230         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2231                 bit_buffer_size);
2232         return AVERROR(ENOMEM);
2233     }
2234
2235     /* open each encoder */
2236     for (i = 0; i < nb_output_streams; i++) {
2237         ost = &output_streams[i];
2238         if (ost->encoding_needed) {
2239             AVCodec *codec = ost->enc;
2240             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2241             if (!codec) {
2242                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d.%d",
2243                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2244                 ret = AVERROR(EINVAL);
2245                 goto dump_format;
2246             }
2247             if (dec->subtitle_header) {
2248                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2249                 if (!ost->st->codec->subtitle_header) {
2250                     ret = AVERROR(ENOMEM);
2251                     goto dump_format;
2252                 }
2253                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2254                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2255             }
2256             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2257                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2258                         ost->file_index, ost->index);
2259                 ret = AVERROR(EINVAL);
2260                 goto dump_format;
2261             }
2262             assert_codec_experimental(ost->st->codec, 1);
2263             assert_avoptions(ost->opts);
2264             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2265                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2266                                              "It takes bits/s as argument, not kbits/s\n");
2267             extra_size += ost->st->codec->extradata_size;
2268
2269             if (ost->st->codec->me_threshold)
2270                 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2271         }
2272     }
2273
2274     /* init input streams */
2275     for (i = 0; i < nb_input_streams; i++)
2276         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2277             goto dump_format;
2278
2279     /* discard unused programs */
2280     for (i = 0; i < nb_input_files; i++) {
2281         InputFile *ifile = &input_files[i];
2282         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2283             AVProgram *p = ifile->ctx->programs[j];
2284             int discard  = AVDISCARD_ALL;
2285
2286             for (k = 0; k < p->nb_stream_indexes; k++)
2287                 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2288                     discard = AVDISCARD_DEFAULT;
2289                     break;
2290                 }
2291             p->discard = discard;
2292         }
2293     }
2294
2295     /* open files and write file headers */
2296     for (i = 0; i < nb_output_files; i++) {
2297         os = output_files[i].ctx;
2298         if (avformat_write_header(os, &output_files[i].opts) < 0) {
2299             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2300             ret = AVERROR(EINVAL);
2301             goto dump_format;
2302         }
2303 //        assert_avoptions(output_files[i].opts);
2304         if (strcmp(os->oformat->name, "rtp")) {
2305             want_sdp = 0;
2306         }
2307     }
2308
2309  dump_format:
2310     /* dump the file output parameters - cannot be done before in case
2311        of stream copy */
2312     for(i=0;i<nb_output_files;i++) {
2313         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2314     }
2315
2316     /* dump the stream mapping */
2317     if (verbose >= 0) {
2318         fprintf(stderr, "Stream mapping:\n");
2319         for (i = 0; i < nb_output_streams;i ++) {
2320             ost = &output_streams[i];
2321             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2322                     input_streams[ost->source_index].file_index,
2323                     input_streams[ost->source_index].st->index,
2324                     ost->file_index,
2325                     ost->index);
2326             if (ost->sync_ist != &input_streams[ost->source_index])
2327                 fprintf(stderr, " [sync #%d.%d]",
2328                         ost->sync_ist->file_index,
2329                         ost->sync_ist->st->index);
2330             if (ost->st->stream_copy)
2331                 fprintf(stderr, " (copy)");
2332             else
2333                 fprintf(stderr, " (%s -> %s)", input_streams[ost->source_index].dec ?
2334                         input_streams[ost->source_index].dec->name : "?",
2335                         ost->enc ? ost->enc->name : "?");
2336             fprintf(stderr, "\n");
2337         }
2338     }
2339
2340     if (ret) {
2341         fprintf(stderr, "%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         if(verbose >= 0)
2376             fprintf(stderr, "Press [q] to stop, [?] for help\n");
2377         avio_set_interrupt_cb(decode_interrupt_cb);
2378     }
2379     term_init();
2380
2381     timer_start = av_gettime();
2382
2383     for(; received_sigterm == 0;) {
2384         int file_index, ist_index;
2385         AVPacket pkt;
2386         int64_t ipts_min;
2387         double opts_min;
2388
2389         ipts_min= INT64_MAX;
2390         opts_min= 1e100;
2391         /* if 'q' pressed, exits */
2392         if (!using_stdin) {
2393             if (q_pressed)
2394                 break;
2395             /* read_key() returns 0 on EOF */
2396             key = read_key();
2397             if (key == 'q')
2398                 break;
2399             if (key == '+') verbose++;
2400             if (key == '-') verbose--;
2401             if (key == 's') qp_hist     ^= 1;
2402             if (key == 'h'){
2403                 if (do_hex_dump){
2404                     do_hex_dump = do_pkt_dump = 0;
2405                 } else if(do_pkt_dump){
2406                     do_hex_dump = 1;
2407                 } else
2408                     do_pkt_dump = 1;
2409                 av_log_set_level(AV_LOG_DEBUG);
2410             }
2411 #if CONFIG_AVFILTER
2412             if (key == 'c' || key == 'C'){
2413                 char ret[4096], target[64], cmd[256], arg[256]={0};
2414                 double ts;
2415                 int k;
2416                 fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2417                 i=0;
2418                 while((k=read_key()) !='\n' && k!='\r' && i<sizeof(ret)-1)
2419                     if(k>0) ret[i++]= k;
2420                 ret[i]= 0;
2421                 if(k>0 && sscanf(ret, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &ts, cmd, arg) >= 3){
2422                     for(i=0;i<nb_output_streams;i++) {
2423                         int r;
2424                         ost = &output_streams[i];
2425                         if(ost->graph){
2426                             if(ts<0){
2427                                 r= avfilter_graph_send_command(ost->graph, target, cmd, arg, ret, sizeof(ret), key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2428                                 fprintf(stderr, "Command reply for %d: %d, %s\n", i, r, ret);
2429                             }else{
2430                                 r= avfilter_graph_queue_command(ost->graph, target, cmd, arg, 0, ts);
2431                             }
2432                         }
2433                     }
2434                 }else{
2435                     fprintf(stderr, "Parse error\n");
2436                 }
2437             }
2438 #endif
2439             if (key == 'd' || key == 'D'){
2440                 int debug=0;
2441                 if(key == 'D') {
2442                     debug = input_streams[0].st->codec->debug<<1;
2443                     if(!debug) debug = 1;
2444                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2445                         debug += debug;
2446                 }else
2447                     scanf("%d", &debug);
2448                 for(i=0;i<nb_input_streams;i++) {
2449                     input_streams[i].st->codec->debug = debug;
2450                 }
2451                 for(i=0;i<nb_output_streams;i++) {
2452                     ost = &output_streams[i];
2453                     ost->st->codec->debug = debug;
2454                 }
2455                 if(debug) av_log_set_level(AV_LOG_DEBUG);
2456                 fprintf(stderr,"debug=%d\n", debug);
2457             }
2458             if (key == '?'){
2459                 fprintf(stderr, "key    function\n"
2460                                 "?      show this help\n"
2461                                 "+      increase verbosity\n"
2462                                 "-      decrease verbosity\n"
2463                                 "c      Send command to filtergraph\n"
2464                                 "D      cycle through available debug modes\n"
2465                                 "h      dump packets/hex press to cycle through the 3 states\n"
2466                                 "q      quit\n"
2467                                 "s      Show QP histogram\n"
2468                 );
2469             }
2470         }
2471
2472         /* select the stream that we must read now by looking at the
2473            smallest output pts */
2474         file_index = -1;
2475         for (i = 0; i < nb_output_streams; i++) {
2476             OutputFile *of;
2477             int64_t ipts;
2478             double  opts;
2479             ost = &output_streams[i];
2480             of = &output_files[ost->file_index];
2481             os = output_files[ost->file_index].ctx;
2482             ist = &input_streams[ost->source_index];
2483             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2484                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2485                 continue;
2486             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2487             ipts = ist->pts;
2488             if (!input_files[ist->file_index].eof_reached){
2489                 if(ipts < ipts_min) {
2490                     ipts_min = ipts;
2491                     if(input_sync ) file_index = ist->file_index;
2492                 }
2493                 if(opts < opts_min) {
2494                     opts_min = opts;
2495                     if(!input_sync) file_index = ist->file_index;
2496                 }
2497             }
2498             if (ost->frame_number >= ost->max_frames) {
2499                 int j;
2500                 for (j = of->ost_index; j < of->ctx->nb_streams; j++)
2501                     output_streams[j].is_past_recording_time = 1;
2502                 continue;
2503             }
2504         }
2505         /* if none, if is finished */
2506         if (file_index < 0) {
2507             if(no_packet_count){
2508                 no_packet_count=0;
2509                 memset(no_packet, 0, nb_input_files);
2510                 usleep(10000);
2511                 continue;
2512             }
2513             break;
2514         }
2515
2516         /* read a frame from it and output it in the fifo */
2517         is = input_files[file_index].ctx;
2518         ret= av_read_frame(is, &pkt);
2519         if(ret == AVERROR(EAGAIN)){
2520             no_packet[file_index]=1;
2521             no_packet_count++;
2522             continue;
2523         }
2524         if (ret < 0) {
2525             input_files[file_index].eof_reached = 1;
2526             if (opt_shortest)
2527                 break;
2528             else
2529                 continue;
2530         }
2531
2532         no_packet_count=0;
2533         memset(no_packet, 0, nb_input_files);
2534
2535         if (do_pkt_dump) {
2536             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2537                              is->streams[pkt.stream_index]);
2538         }
2539         /* the following test is needed in case new streams appear
2540            dynamically in stream : we ignore them */
2541         if (pkt.stream_index >= input_files[file_index].nb_streams)
2542             goto discard_packet;
2543         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2544         ist = &input_streams[ist_index];
2545         if (ist->discard)
2546             goto discard_packet;
2547
2548         if (pkt.dts != AV_NOPTS_VALUE)
2549             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2550         if (pkt.pts != AV_NOPTS_VALUE)
2551             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2552
2553         if(pkt.pts != AV_NOPTS_VALUE)
2554             pkt.pts *= ist->ts_scale;
2555         if(pkt.dts != AV_NOPTS_VALUE)
2556             pkt.dts *= ist->ts_scale;
2557
2558 //        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);
2559         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2560             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2561             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2562             int64_t delta= pkt_dts - ist->next_pts;
2563             if((delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2564                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2565                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2566                 pkt_dts+1<ist->pts)&& !copy_ts){
2567                 input_files[ist->file_index].ts_offset -= delta;
2568                 if (verbose > 2)
2569                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2570                             delta, input_files[ist->file_index].ts_offset);
2571                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2572                 if(pkt.pts != AV_NOPTS_VALUE)
2573                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2574             }
2575         }
2576
2577         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2578         if (output_packet(ist, ist_index, output_streams, nb_output_streams, &pkt) < 0) {
2579
2580             if (verbose >= 0)
2581                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2582                         ist->file_index, ist->st->index);
2583             if (exit_on_error)
2584                 exit_program(1);
2585             av_free_packet(&pkt);
2586             continue;
2587         }
2588
2589     discard_packet:
2590         av_free_packet(&pkt);
2591
2592         /* dump report by using the output first video and audio streams */
2593         print_report(output_files, output_streams, nb_output_streams, 0, timer_start);
2594     }
2595
2596     /* at the end of stream, we must flush the decoder buffers */
2597     for (i = 0; i < nb_input_streams; i++) {
2598         ist = &input_streams[i];
2599         if (ist->decoding_needed) {
2600             output_packet(ist, i, output_streams, nb_output_streams, NULL);
2601         }
2602     }
2603     flush_encoders(output_streams, nb_output_streams);
2604
2605     term_exit();
2606
2607     /* write the trailer if needed and close file */
2608     for(i=0;i<nb_output_files;i++) {
2609         os = output_files[i].ctx;
2610         av_write_trailer(os);
2611     }
2612
2613     /* dump report by using the first video and audio streams */
2614     print_report(output_files, output_streams, nb_output_streams, 1, timer_start);
2615
2616     /* close each encoder */
2617     for (i = 0; i < nb_output_streams; i++) {
2618         ost = &output_streams[i];
2619         if (ost->encoding_needed) {
2620             av_freep(&ost->st->codec->stats_in);
2621             avcodec_close(ost->st->codec);
2622         }
2623 #if CONFIG_AVFILTER
2624         avfilter_graph_free(&ost->graph);
2625 #endif
2626     }
2627
2628     /* close each decoder */
2629     for (i = 0; i < nb_input_streams; i++) {
2630         ist = &input_streams[i];
2631         if (ist->decoding_needed) {
2632             avcodec_close(ist->st->codec);
2633         }
2634     }
2635
2636     /* finished ! */
2637     ret = 0;
2638
2639  fail:
2640     av_freep(&bit_buffer);
2641     av_freep(&no_packet);
2642
2643     if (output_streams) {
2644         for (i = 0; i < nb_output_streams; i++) {
2645             ost = &output_streams[i];
2646             if (ost) {
2647                 if (ost->st->stream_copy)
2648                     av_freep(&ost->st->codec->extradata);
2649                 if (ost->logfile) {
2650                     fclose(ost->logfile);
2651                     ost->logfile = NULL;
2652                 }
2653                 av_fifo_free(ost->fifo); /* works even if fifo is not
2654                                              initialized but set to zero */
2655                 av_freep(&ost->st->codec->subtitle_header);
2656                 av_free(ost->resample_frame.data[0]);
2657                 av_free(ost->forced_kf_pts);
2658                 if (ost->video_resample)
2659                     sws_freeContext(ost->img_resample_ctx);
2660                 swr_free(&ost->swr);
2661                 av_dict_free(&ost->opts);
2662             }
2663         }
2664     }
2665     return ret;
2666 }
2667
2668 static int opt_verbose(const char *opt, const char *arg)
2669 {
2670     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2671     return 0;
2672 }
2673
2674 static int opt_frame_crop(const char *opt, const char *arg)
2675 {
2676     fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
2677     return AVERROR(EINVAL);
2678 }
2679
2680 static int opt_pad(const char *opt, const char *arg)
2681 {
2682     fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2683     return -1;
2684 }
2685
2686 static double parse_frame_aspect_ratio(const char *arg)
2687 {
2688     int x = 0, y = 0;
2689     double ar = 0;
2690     const char *p;
2691     char *end;
2692
2693     p = strchr(arg, ':');
2694     if (p) {
2695         x = strtol(arg, &end, 10);
2696         if (end == p)
2697             y = strtol(end+1, &end, 10);
2698         if (x > 0 && y > 0)
2699             ar = (double)x / (double)y;
2700     } else
2701         ar = strtod(arg, NULL);
2702
2703     if (!ar) {
2704         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2705         exit_program(1);
2706     }
2707     return ar;
2708 }
2709
2710 static int opt_video_channel(const char *opt, const char *arg)
2711 {
2712     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
2713     return opt_default("channel", arg);
2714 }
2715
2716 static int opt_video_standard(const char *opt, const char *arg)
2717 {
2718     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
2719     return opt_default("standard", arg);
2720 }
2721
2722 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2723 {
2724     audio_codec_name = arg;
2725     return parse_option(o, "codec:a", arg, options);
2726 }
2727
2728 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2729 {
2730     video_codec_name = arg;
2731     return parse_option(o, "codec:v", arg, options);
2732 }
2733
2734 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2735 {
2736     subtitle_codec_name = arg;
2737     return parse_option(o, "codec:s", arg, options);
2738 }
2739
2740 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2741 {
2742     return parse_option(o, "codec:d", arg, options);
2743 }
2744
2745 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2746 {
2747     StreamMap *m = NULL;
2748     int i, negative = 0, file_idx;
2749     int sync_file_idx = -1, sync_stream_idx;
2750     char *p, *sync;
2751     char *map;
2752
2753     if (*arg == '-') {
2754         negative = 1;
2755         arg++;
2756     }
2757     map = av_strdup(arg);
2758
2759     /* parse sync stream first, just pick first matching stream */
2760     if (sync = strchr(map, ',')) {
2761         *sync = 0;
2762         sync_file_idx = strtol(sync + 1, &sync, 0);
2763         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2764             av_log(NULL, AV_LOG_ERROR, "Invalid sync file index: %d.\n", sync_file_idx);
2765             exit_program(1);
2766         }
2767         if (*sync)
2768             sync++;
2769         for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2770             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2771                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2772                 sync_stream_idx = i;
2773                 break;
2774             }
2775         if (i == input_files[sync_file_idx].nb_streams) {
2776             av_log(NULL, AV_LOG_ERROR, "Sync stream specification in map %s does not "
2777                                        "match any streams.\n", arg);
2778             exit_program(1);
2779         }
2780     }
2781
2782
2783     file_idx = strtol(map, &p, 0);
2784     if (file_idx >= nb_input_files || file_idx < 0) {
2785         av_log(NULL, AV_LOG_ERROR, "Invalid input file index: %d.\n", file_idx);
2786         exit_program(1);
2787     }
2788     if (negative)
2789         /* disable some already defined maps */
2790         for (i = 0; i < o->nb_stream_maps; i++) {
2791             m = &o->stream_maps[i];
2792             if (check_stream_specifier(input_files[m->file_index].ctx,
2793                                        input_files[m->file_index].ctx->streams[m->stream_index],
2794                                        *p == ':' ? p + 1 : p) > 0)
2795                 m->disabled = 1;
2796         }
2797     else
2798         for (i = 0; i < input_files[file_idx].nb_streams; i++) {
2799             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2800                         *p == ':' ? p + 1 : p) <= 0)
2801                 continue;
2802             o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
2803                                         &o->nb_stream_maps, o->nb_stream_maps + 1);
2804             m = &o->stream_maps[o->nb_stream_maps - 1];
2805
2806             m->file_index   = file_idx;
2807             m->stream_index = i;
2808
2809             if (sync_file_idx >= 0) {
2810                 m->sync_file_index   = sync_file_idx;
2811                 m->sync_stream_index = sync_stream_idx;
2812             } else {
2813                 m->sync_file_index   = file_idx;
2814                 m->sync_stream_index = i;
2815             }
2816         }
2817
2818     if (!m) {
2819         av_log(NULL, AV_LOG_ERROR, "Stream map '%s' matches no streams.\n", arg);
2820         exit_program(1);
2821     }
2822
2823     av_freep(&map);
2824     return 0;
2825 }
2826
2827 static void parse_meta_type(char *arg, char *type, int *index)
2828 {
2829     if (*arg) {
2830         *type = *arg;
2831         switch (*arg) {
2832         case 'g':
2833             break;
2834         case 's':
2835         case 'c':
2836         case 'p':
2837             if (*(++arg) == ':')
2838                 *index = strtol(++arg, NULL, 0);
2839             break;
2840         default:
2841             fprintf(stderr, "Invalid metadata type %c.\n", *arg);
2842             exit_program(1);
2843         }
2844     } else
2845         *type = 'g';
2846 }
2847
2848 static int opt_map_metadata(OptionsContext *o, const char *opt, const char *arg)
2849 {
2850     MetadataMap *m, *m1;
2851     char *p;
2852
2853     o->meta_data_maps = grow_array(o->meta_data_maps, sizeof(*o->meta_data_maps),
2854                                    &o->nb_meta_data_maps, o->nb_meta_data_maps + 1);
2855
2856     m = &o->meta_data_maps[o->nb_meta_data_maps - 1][1];
2857     m->file = strtol(arg, &p, 0);
2858     parse_meta_type(*p ? p + 1 : p, &m->type, &m->index);
2859
2860     m1 = &o->meta_data_maps[o->nb_meta_data_maps - 1][0];
2861     if (p = strchr(opt, ':'))
2862         parse_meta_type(p + 1, &m1->type, &m1->index);
2863     else
2864         m1->type = 'g';
2865
2866     if (m->type == 'g' || m1->type == 'g')
2867         o->metadata_global_manual = 1;
2868     if (m->type == 's' || m1->type == 's')
2869         o->metadata_streams_manual = 1;
2870     if (m->type == 'c' || m1->type == 'c')
2871         o->metadata_chapters_manual = 1;
2872
2873     return 0;
2874 }
2875
2876 static int opt_map_meta_data(OptionsContext *o, const char *opt, const char *arg)
2877 {
2878     fprintf(stderr, "-map_meta_data is deprecated and will be removed soon. "
2879                     "Use -map_metadata instead.\n");
2880     return opt_map_metadata(o, opt, arg);
2881 }
2882
2883 static int opt_recording_timestamp(OptionsContext *o, const char *opt, const char *arg)
2884 {
2885     char buf[128];
2886     int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
2887     struct tm time = *gmtime((time_t*)&recording_timestamp);
2888     strftime(buf, sizeof(buf), "creation_time=%FT%T%z", &time);
2889     parse_option(o, "metadata", buf, options);
2890
2891     av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
2892                                  "tag instead.\n", opt);
2893     return 0;
2894 }
2895
2896 static enum CodecID find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
2897 {
2898     const char *codec_string = encoder ? "encoder" : "decoder";
2899     AVCodec *codec;
2900
2901     if(!name)
2902         return CODEC_ID_NONE;
2903     codec = encoder ?
2904         avcodec_find_encoder_by_name(name) :
2905         avcodec_find_decoder_by_name(name);
2906     if(!codec) {
2907         av_log(NULL, AV_LOG_ERROR, "Unknown %s '%s'\n", codec_string, name);
2908         exit_program(1);
2909     }
2910     if(codec->type != type) {
2911         av_log(NULL, AV_LOG_ERROR, "Invalid %s type '%s'\n", codec_string, name);
2912         exit_program(1);
2913     }
2914     return codec->id;
2915 }
2916
2917 static AVCodec *choose_codec(OptionsContext *o, AVFormatContext *s, AVStream *st, enum AVMediaType type)
2918 {
2919     char *codec_name = NULL;
2920
2921     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
2922
2923     if (!codec_name) {
2924         if (s->oformat) {
2925             st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename, NULL, type);
2926             return avcodec_find_encoder(st->codec->codec_id);
2927         }
2928     } else if (!strcmp(codec_name, "copy"))
2929         st->stream_copy = 1;
2930     else {
2931         st->codec->codec_id = find_codec_or_die(codec_name, type, s->iformat == NULL);
2932         return s->oformat ? avcodec_find_encoder_by_name(codec_name) :
2933                             avcodec_find_decoder_by_name(codec_name);
2934     }
2935
2936     return NULL;
2937 }
2938
2939 /**
2940  * Add all the streams from the given input file to the global
2941  * list of input streams.
2942  */
2943 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
2944 {
2945     int i, rfps, rfps_base;
2946
2947     for (i = 0; i < ic->nb_streams; i++) {
2948         AVStream *st = ic->streams[i];
2949         AVCodecContext *dec = st->codec;
2950         InputStream *ist;
2951         double scale = 1.0;
2952
2953         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
2954         ist = &input_streams[nb_input_streams - 1];
2955         ist->st = st;
2956         ist->file_index = nb_input_files;
2957         ist->discard = 1;
2958         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
2959
2960         MATCH_PER_STREAM_OPT(ts_scale, dbl, scale, ic, st);
2961         ist->ts_scale = scale;
2962
2963         ist->dec = choose_codec(o, ic, st, dec->codec_type);
2964         if (!ist->dec)
2965             ist->dec = avcodec_find_decoder(dec->codec_id);
2966
2967         switch (dec->codec_type) {
2968         case AVMEDIA_TYPE_AUDIO:
2969             if(!ist->dec)
2970                 ist->dec = avcodec_find_decoder(dec->codec_id);
2971             if(o->audio_disable)
2972                 st->discard= AVDISCARD_ALL;
2973             break;
2974         case AVMEDIA_TYPE_VIDEO:
2975             if(!ist->dec)
2976                 ist->dec = avcodec_find_decoder(dec->codec_id);
2977             rfps      = ic->streams[i]->r_frame_rate.num;
2978             rfps_base = ic->streams[i]->r_frame_rate.den;
2979             if (dec->lowres) {
2980                 dec->flags |= CODEC_FLAG_EMU_EDGE;
2981             }
2982
2983             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
2984
2985                 if (verbose >= 0)
2986                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
2987                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
2988
2989                     (float)rfps / rfps_base, rfps, rfps_base);
2990             }
2991
2992             if (o->video_disable)
2993                 st->discard= AVDISCARD_ALL;
2994             else if(video_discard)
2995                 st->discard= video_discard;
2996             break;
2997         case AVMEDIA_TYPE_DATA:
2998             break;
2999         case AVMEDIA_TYPE_SUBTITLE:
3000             if(!ist->dec)
3001                 ist->dec = avcodec_find_decoder(dec->codec_id);
3002             if(o->subtitle_disable)
3003                 st->discard = AVDISCARD_ALL;
3004             break;
3005         case AVMEDIA_TYPE_ATTACHMENT:
3006         case AVMEDIA_TYPE_UNKNOWN:
3007             break;
3008         default:
3009             abort();
3010         }
3011     }
3012 }
3013
3014 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
3015 {
3016     AVFormatContext *ic;
3017     AVInputFormat *file_iformat = NULL;
3018     int err, i, ret;
3019     int64_t timestamp;
3020     uint8_t buf[128];
3021     AVDictionary **opts;
3022     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
3023
3024     if (o->format) {
3025         if (!(file_iformat = av_find_input_format(o->format))) {
3026             fprintf(stderr, "Unknown input format: '%s'\n", o->format);
3027             exit_program(1);
3028         }
3029     }
3030
3031     if (!strcmp(filename, "-"))
3032         filename = "pipe:";
3033
3034     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3035                     !strcmp(filename, "/dev/stdin");
3036
3037     /* get default parameters from command line */
3038     ic = avformat_alloc_context();
3039     if (!ic) {
3040         print_error(filename, AVERROR(ENOMEM));
3041         exit_program(1);
3042     }
3043     if (o->nb_audio_sample_rate) {
3044         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
3045         av_dict_set(&format_opts, "sample_rate", buf, 0);
3046     }
3047     if (o->nb_audio_channels) {
3048         snprintf(buf, sizeof(buf), "%d", o->audio_channels[o->nb_audio_channels - 1].u.i);
3049         av_dict_set(&format_opts, "channels", buf, 0);
3050     }
3051     if (o->nb_frame_rates) {
3052         av_dict_set(&format_opts, "framerate", o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
3053     }
3054     if (o->nb_frame_sizes) {
3055         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
3056     }
3057     if (o->nb_frame_pix_fmts)
3058         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
3059
3060     ic->flags |= AVFMT_FLAG_NONBLOCK;
3061
3062     if (loop_input) {
3063         av_log(NULL, AV_LOG_WARNING, "-loop_input is deprecated, use -loop 1\n");
3064         ic->loop_input = loop_input;
3065     }
3066
3067     /* open the input file with generic libav function */
3068     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3069     if (err < 0) {
3070         print_error(filename, err);
3071         exit_program(1);
3072     }
3073     assert_avoptions(format_opts);
3074
3075     /* apply forced codec ids */
3076     for (i = 0; i < ic->nb_streams; i++)
3077         choose_codec(o, ic, ic->streams[i], ic->streams[i]->codec->codec_type);
3078
3079     /* Set AVCodecContext options for avformat_find_stream_info */
3080     opts = setup_find_stream_info_opts(ic, codec_opts);
3081     orig_nb_streams = ic->nb_streams;
3082
3083     /* If not enough info to get the stream parameters, we decode the
3084        first frames to get it. (used in mpeg case for example) */
3085     ret = avformat_find_stream_info(ic, opts);
3086     if (ret < 0 && verbose >= 0) {
3087         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3088         av_close_input_file(ic);
3089         exit_program(1);
3090     }
3091
3092     timestamp = o->start_time;
3093     /* add the stream start time */
3094     if (ic->start_time != AV_NOPTS_VALUE)
3095         timestamp += ic->start_time;
3096
3097     /* if seeking requested, we execute it */
3098     if (o->start_time != 0) {
3099         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3100         if (ret < 0) {
3101             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3102                     filename, (double)timestamp / AV_TIME_BASE);
3103         }
3104     }
3105
3106     /* update the current parameters so that they match the one of the input stream */
3107     add_input_streams(o, ic);
3108
3109     /* dump the file content */
3110     if (verbose >= 0)
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_ERROR, "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_ERROR, "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     ost->sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
3215     return ost;
3216 }
3217
3218 static void parse_matrix_coeffs(uint16_t *dest, const char *str)
3219 {
3220     int i;
3221     const char *p = str;
3222     for(i = 0;; i++) {
3223         dest[i] = atoi(p);
3224         if(i == 63)
3225             break;
3226         p = strchr(p, ',');
3227         if(!p) {
3228             fprintf(stderr, "Syntax error in matrix \"%s\" at coeff %d\n", str, i);
3229             exit_program(1);
3230         }
3231         p++;
3232     }
3233 }
3234
3235 static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc)
3236 {
3237     AVStream *st;
3238     OutputStream *ost;
3239     AVCodecContext *video_enc;
3240
3241     ost = new_output_stream(o, oc, AVMEDIA_TYPE_VIDEO);
3242     st  = ost->st;
3243     video_enc = st->codec;
3244
3245     if(oc->oformat->flags & AVFMT_GLOBALHEADER) {
3246         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3247     }
3248
3249     if (!st->stream_copy) {
3250         const char *p = NULL;
3251         char *forced_key_frames = NULL, *frame_rate = NULL, *frame_size = NULL;
3252         char *frame_aspect_ratio = NULL, *frame_pix_fmt = NULL;
3253         char *intra_matrix = NULL, *inter_matrix = NULL, *filters = NULL;
3254         int i, force_fps = 0, top_field_first = -1;
3255
3256         MATCH_PER_STREAM_OPT(frame_rates, str, frame_rate, oc, st);
3257         if (frame_rate && av_parse_video_rate(&ost->frame_rate, frame_rate) < 0) {
3258             av_log(NULL, AV_LOG_ERROR, "Invalid framerate value: %s\n", frame_rate);
3259             exit_program(1);
3260         }
3261
3262         MATCH_PER_STREAM_OPT(frame_sizes, str, frame_size, oc, st);
3263         if (frame_size && av_parse_video_size(&video_enc->width, &video_enc->height, frame_size) < 0) {
3264             av_log(NULL, AV_LOG_ERROR, "Invalid frame size: %s.\n", frame_size);
3265             exit_program(1);
3266         }
3267
3268         MATCH_PER_STREAM_OPT(frame_aspect_ratios, str, frame_aspect_ratio, oc, st);
3269         if (frame_aspect_ratio)
3270             ost->frame_aspect_ratio = parse_frame_aspect_ratio(frame_aspect_ratio);
3271
3272         video_enc->bits_per_raw_sample = frame_bits_per_raw_sample;
3273         MATCH_PER_STREAM_OPT(frame_pix_fmts, str, frame_pix_fmt, oc, st);
3274         if (frame_pix_fmt && (video_enc->pix_fmt = av_get_pix_fmt(frame_pix_fmt)) == PIX_FMT_NONE) {
3275             av_log(NULL, AV_LOG_ERROR, "Unknown pixel format requested: %s.\n", frame_pix_fmt);
3276             exit_program(1);
3277         }
3278         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3279
3280         if (intra_only)
3281             video_enc->gop_size = 0;
3282         MATCH_PER_STREAM_OPT(intra_matrices, str, intra_matrix, oc, st);
3283         if (intra_matrix) {
3284             if (!(video_enc->intra_matrix = av_mallocz(sizeof(*video_enc->intra_matrix) * 64))) {
3285                 av_log(NULL, AV_LOG_ERROR, "Could not allocate memory for intra matrix.\n");
3286                 exit_program(1);
3287             }
3288             parse_matrix_coeffs(video_enc->intra_matrix, intra_matrix);
3289         }
3290         MATCH_PER_STREAM_OPT(inter_matrices, str, inter_matrix, oc, st);
3291         if (inter_matrix) {
3292             if (!(video_enc->inter_matrix = av_mallocz(sizeof(*video_enc->inter_matrix) * 64))) {
3293                 av_log(NULL, AV_LOG_ERROR, "Could not allocate memory for inter matrix.\n");
3294                 exit_program(1);
3295             }
3296             parse_matrix_coeffs(video_enc->inter_matrix, inter_matrix);
3297         }
3298
3299         MATCH_PER_STREAM_OPT(rc_overrides, str, p, oc, st);
3300         for(i=0; p; i++){
3301             int start, end, q;
3302             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3303             if(e!=3){
3304                 fprintf(stderr, "error parsing rc_override\n");
3305                 exit_program(1);
3306             }
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 (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3370         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3371     }
3372     if (!st->stream_copy) {
3373         char *sample_fmt = NULL;
3374
3375         MATCH_PER_STREAM_OPT(audio_channels, i, audio_enc->channels, oc, st);
3376
3377         MATCH_PER_STREAM_OPT(sample_fmts, str, sample_fmt, oc, st);
3378         if (sample_fmt &&
3379             (audio_enc->sample_fmt = av_get_sample_fmt(sample_fmt)) == AV_SAMPLE_FMT_NONE) {
3380             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", sample_fmt);
3381             exit_program(1);
3382         }
3383
3384         MATCH_PER_STREAM_OPT(audio_sample_rate, i, audio_enc->sample_rate, oc, st);
3385     }
3386
3387     return ost;
3388 }
3389
3390 static OutputStream *new_data_stream(OptionsContext *o, AVFormatContext *oc)
3391 {
3392     AVStream *st;
3393     OutputStream *ost;
3394     AVCodecContext *data_enc;
3395
3396     ost = new_output_stream(o, oc, AVMEDIA_TYPE_DATA);
3397     st  = ost->st;
3398     data_enc = st->codec;
3399     if (!st->stream_copy) {
3400         fprintf(stderr, "Data stream encoding not supported yet (only streamcopy)\n");
3401         exit_program(1);
3402     }
3403
3404     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3405         data_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3406     }
3407
3408     return ost;
3409 }
3410
3411 static OutputStream *new_subtitle_stream(OptionsContext *o, AVFormatContext *oc)
3412 {
3413     AVStream *st;
3414     OutputStream *ost;
3415     AVCodecContext *subtitle_enc;
3416
3417     ost = new_output_stream(o, oc, AVMEDIA_TYPE_SUBTITLE);
3418     st  = ost->st;
3419     subtitle_enc = st->codec;
3420
3421     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3422
3423     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3424         subtitle_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3425     }
3426
3427     return ost;
3428 }
3429
3430 /* arg format is "output-stream-index:streamid-value". */
3431 static int opt_streamid(OptionsContext *o, const char *opt, const char *arg)
3432 {
3433     int idx;
3434     char *p;
3435     char idx_str[16];
3436
3437     av_strlcpy(idx_str, arg, sizeof(idx_str));
3438     p = strchr(idx_str, ':');
3439     if (!p) {
3440         fprintf(stderr,
3441                 "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3442                 arg, opt);
3443         exit_program(1);
3444     }
3445     *p++ = '\0';
3446     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, MAX_STREAMS-1);
3447     o->streamid_map = grow_array(o->streamid_map, sizeof(*o->streamid_map), &o->nb_streamid_map, idx+1);
3448     o->streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3449     return 0;
3450 }
3451
3452 static int copy_chapters(InputFile *ifile, OutputFile *ofile, int copy_metadata)
3453 {
3454     AVFormatContext *is = ifile->ctx;
3455     AVFormatContext *os = ofile->ctx;
3456     int i;
3457
3458     for (i = 0; i < is->nb_chapters; i++) {
3459         AVChapter *in_ch = is->chapters[i], *out_ch;
3460         int64_t ts_off   = av_rescale_q(ofile->start_time - ifile->ts_offset,
3461                                       AV_TIME_BASE_Q, in_ch->time_base);
3462         int64_t rt       = (ofile->recording_time == INT64_MAX) ? INT64_MAX :
3463                            av_rescale_q(ofile->recording_time, AV_TIME_BASE_Q, in_ch->time_base);
3464
3465
3466         if (in_ch->end < ts_off)
3467             continue;
3468         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
3469             break;
3470
3471         out_ch = av_mallocz(sizeof(AVChapter));
3472         if (!out_ch)
3473             return AVERROR(ENOMEM);
3474
3475         out_ch->id        = in_ch->id;
3476         out_ch->time_base = in_ch->time_base;
3477         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
3478         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
3479
3480         if (copy_metadata)
3481             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
3482
3483         os->nb_chapters++;
3484         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
3485         if (!os->chapters)
3486             return AVERROR(ENOMEM);
3487         os->chapters[os->nb_chapters - 1] = out_ch;
3488     }
3489     return 0;
3490 }
3491
3492 static int read_ffserver_streams(OptionsContext *o, AVFormatContext *s, const char *filename)
3493 {
3494     int i, err;
3495     AVFormatContext *ic = NULL;
3496
3497     err = avformat_open_input(&ic, filename, NULL, NULL);
3498     if (err < 0)
3499         return err;
3500     /* copy stream format */
3501     for(i=0;i<ic->nb_streams;i++) {
3502         AVStream *st;
3503         OutputStream *ost;
3504         AVCodec *codec;
3505
3506         codec = avcodec_find_encoder(ic->streams[i]->codec->codec_id);
3507         ost   = new_output_stream(o, s, codec->type);
3508         st    = ost->st;
3509
3510         // FIXME: a more elegant solution is needed
3511         memcpy(st, ic->streams[i], sizeof(AVStream));
3512         st->info = av_malloc(sizeof(*st->info));
3513         memcpy(st->info, ic->streams[i]->info, sizeof(*st->info));
3514         avcodec_copy_context(st->codec, ic->streams[i]->codec);
3515
3516         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && !st->stream_copy)
3517             choose_sample_fmt(st, codec);
3518         else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && !st->stream_copy)
3519             choose_pixel_fmt(st, codec);
3520     }
3521
3522     av_close_input_file(ic);
3523     return 0;
3524 }
3525
3526 static void opt_output_file(void *optctx, const char *filename)
3527 {
3528     OptionsContext *o = optctx;
3529     AVFormatContext *oc;
3530     int i, err;
3531     AVOutputFormat *file_oformat;
3532     OutputStream *ost;
3533     InputStream  *ist;
3534
3535     if (!strcmp(filename, "-"))
3536         filename = "pipe:";
3537
3538     err = avformat_alloc_output_context2(&oc, NULL, o->format, filename);
3539     if (!oc) {
3540         print_error(filename, err);
3541         exit_program(1);
3542     }
3543     file_oformat= oc->oformat;
3544
3545     if (!strcmp(file_oformat->name, "ffm") &&
3546         av_strstart(filename, "http:", NULL)) {
3547         /* special case for files sent to ffserver: we get the stream
3548            parameters from ffserver */
3549         int err = read_ffserver_streams(o, oc, filename);
3550         if (err < 0) {
3551             print_error(filename, err);
3552             exit_program(1);
3553         }
3554     } else if (!o->nb_stream_maps) {
3555         /* pick the "best" stream of each type */
3556 #define NEW_STREAM(type, index)\
3557         if (index >= 0) {\
3558             ost = new_ ## type ## _stream(o, oc);\
3559             ost->source_index = index;\
3560             ost->sync_ist     = &input_streams[index];\
3561             input_streams[index].discard = 0;\
3562         }
3563
3564         /* video: highest resolution */
3565         if (!o->video_disable && oc->oformat->video_codec != CODEC_ID_NONE) {
3566             int area = 0, idx = -1;
3567             for (i = 0; i < nb_input_streams; i++) {
3568                 ist = &input_streams[i];
3569                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3570                     ist->st->codec->width * ist->st->codec->height > area) {
3571                     area = ist->st->codec->width * ist->st->codec->height;
3572                     idx = i;
3573                 }
3574             }
3575             NEW_STREAM(video, idx);
3576         }
3577
3578         /* audio: most channels */
3579         if (!o->audio_disable && oc->oformat->audio_codec != CODEC_ID_NONE) {
3580             int channels = 0, idx = -1;
3581             for (i = 0; i < nb_input_streams; i++) {
3582                 ist = &input_streams[i];
3583                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
3584                     ist->st->codec->channels > channels) {
3585                     channels = ist->st->codec->channels;
3586                     idx = i;
3587                 }
3588             }
3589             NEW_STREAM(audio, idx);
3590         }
3591
3592         /* subtitles: pick first */
3593         if (!o->subtitle_disable && (oc->oformat->subtitle_codec != CODEC_ID_NONE || subtitle_codec_name)) {
3594             for (i = 0; i < nb_input_streams; i++)
3595                 if (input_streams[i].st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3596                     NEW_STREAM(subtitle, i);
3597                     break;
3598                 }
3599         }
3600         /* do something with data? */
3601     } else {
3602         for (i = 0; i < o->nb_stream_maps; i++) {
3603             StreamMap *map = &o->stream_maps[i];
3604
3605             if (map->disabled)
3606                 continue;
3607
3608             ist = &input_streams[input_files[map->file_index].ist_index + map->stream_index];
3609             switch (ist->st->codec->codec_type) {
3610             case AVMEDIA_TYPE_VIDEO:    ost = new_video_stream(o, oc);    break;
3611             case AVMEDIA_TYPE_AUDIO:    ost = new_audio_stream(o, oc);    break;
3612             case AVMEDIA_TYPE_SUBTITLE: ost = new_subtitle_stream(o, oc); break;
3613             case AVMEDIA_TYPE_DATA:     ost = new_data_stream(o, oc);     break;
3614             default:
3615                 av_log(NULL, AV_LOG_ERROR, "Cannot map stream #%d.%d - unsupported type.\n",
3616                        map->file_index, map->stream_index);
3617                 exit_program(1);
3618             }
3619
3620             ost->source_index = input_files[map->file_index].ist_index + map->stream_index;
3621             ost->sync_ist = &input_streams[input_files[map->sync_file_index].ist_index +
3622                                            map->sync_stream_index];
3623             ist->discard = 0;
3624         }
3625     }
3626
3627     output_files = grow_array(output_files, sizeof(*output_files), &nb_output_files, nb_output_files + 1);
3628     output_files[nb_output_files - 1].ctx       = oc;
3629     output_files[nb_output_files - 1].ost_index = nb_output_streams - oc->nb_streams;
3630     output_files[nb_output_files - 1].recording_time = o->recording_time;
3631     output_files[nb_output_files - 1].start_time     = o->start_time;
3632     output_files[nb_output_files - 1].limit_filesize = o->limit_filesize;
3633     av_dict_copy(&output_files[nb_output_files - 1].opts, format_opts, 0);
3634
3635     /* check filename in case of an image number is expected */
3636     if (oc->oformat->flags & AVFMT_NEEDNUMBER) {
3637         if (!av_filename_number_test(oc->filename)) {
3638             print_error(oc->filename, AVERROR(EINVAL));
3639             exit_program(1);
3640         }