shorten: Fix invalid free()
[ffmpeg.git] / avconv.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
49 #include "libavformat/ffm.h" // not public API
50
51 #if CONFIG_AVFILTER
52 # include "libavfilter/avcodec.h"
53 # include "libavfilter/avfilter.h"
54 # include "libavfilter/avfiltergraph.h"
55 # include "libavfilter/buffersink.h"
56 # include "libavfilter/vsrc_buffer.h"
57 #endif
58
59 #if HAVE_SYS_RESOURCE_H
60 #include <sys/types.h>
61 #include <sys/time.h>
62 #include <sys/resource.h>
63 #elif HAVE_GETPROCESSTIMES
64 #include <windows.h>
65 #endif
66 #if HAVE_GETPROCESSMEMORYINFO
67 #include <windows.h>
68 #include <psapi.h>
69 #endif
70
71 #if HAVE_SYS_SELECT_H
72 #include <sys/select.h>
73 #endif
74
75 #if HAVE_TERMIOS_H
76 #include <fcntl.h>
77 #include <sys/ioctl.h>
78 #include <sys/time.h>
79 #include <termios.h>
80 #elif HAVE_KBHIT
81 #include <conio.h>
82 #endif
83 #include <time.h>
84
85 #include "cmdutils.h"
86
87 #include "libavutil/avassert.h"
88
89 const char program_name[] = "avconv";
90 const int program_birth_year = 2000;
91
92 /* select an input stream for an output stream */
93 typedef struct StreamMap {
94     int disabled;           /** 1 is this mapping is disabled by a negative map */
95     int file_index;
96     int stream_index;
97     int sync_file_index;
98     int sync_stream_index;
99 } StreamMap;
100
101 /**
102  * select an input file for an output file
103  */
104 typedef struct MetadataMap {
105     int  file;      ///< file index
106     char type;      ///< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
107     int  index;     ///< stream/chapter/program number
108 } MetadataMap;
109
110 static const OptionDef options[];
111
112 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
113
114 static int frame_bits_per_raw_sample = 0;
115 static int video_discard = 0;
116 static int same_quant = 0;
117 static int do_deinterlace = 0;
118 static int intra_dc_precision = 8;
119 static int qp_hist = 0;
120
121 static int file_overwrite = 0;
122 static int no_file_overwrite = 0;
123 static int do_benchmark = 0;
124 static int do_hex_dump = 0;
125 static int do_pkt_dump = 0;
126 static int do_pass = 0;
127 static const char *pass_logfilename_prefix;
128 static int video_sync_method= -1;
129 static int audio_sync_method= 0;
130 static float audio_drift_threshold= 0.1;
131 static int copy_ts= 0;
132 static int copy_tb = 1;
133 static int opt_shortest = 0;
134 static char *vstats_filename;
135 static FILE *vstats_file;
136
137 static int audio_volume = 256;
138
139 static int exit_on_error = 0;
140 static int using_stdin = 0;
141 static int run_as_daemon  = 0;
142 static int q_pressed = 0;
143 static int64_t video_size = 0;
144 static int64_t audio_size = 0;
145 static int64_t extra_size = 0;
146 static int nb_frames_dup = 0;
147 static int nb_frames_drop = 0;
148 static int input_sync;
149
150 static float dts_delta_threshold = 10;
151
152 static int print_stats = 1;
153
154 static uint8_t *audio_buf;
155 static uint8_t *audio_out;
156 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
157
158 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
159
160 typedef struct InputStream {
161     int file_index;
162     AVStream *st;
163     int discard;             /* true if stream data should be discarded */
164     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
165     AVCodec *dec;
166     AVFrame *decoded_frame;
167     AVFrame *filtered_frame;
168
169     int64_t       start;     /* time when read started */
170     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
171                                 is not defined */
172     int64_t       pts;       /* current pts */
173     double ts_scale;
174     int is_start;            /* is 1 at the start and after a discontinuity */
175     int showed_multi_packet_warning;
176     AVDictionary *opts;
177 } InputStream;
178
179 typedef struct InputFile {
180     AVFormatContext *ctx;
181     int eof_reached;      /* true if eof reached */
182     int ist_index;        /* index of first stream in ist_table */
183     int buffer_size;      /* current total buffer size */
184     int64_t ts_offset;
185     int nb_streams;       /* number of stream that avconv is aware of; may be different
186                              from ctx.nb_streams if new streams appear during av_read_frame() */
187     int rate_emu;
188 } InputFile;
189
190 typedef struct OutputStream {
191     int file_index;          /* file index */
192     int index;               /* stream index in the output file */
193     int source_index;        /* InputStream index */
194     AVStream *st;            /* stream in the output file */
195     int encoding_needed;     /* true if encoding needed for this stream */
196     int frame_number;
197     /* input pts and corresponding output pts
198        for A/V sync */
199     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
200     struct InputStream *sync_ist; /* input stream to sync against */
201     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
202     AVBitStreamFilterContext *bitstream_filters;
203     AVCodec *enc;
204     int64_t max_frames;
205
206     /* video only */
207     int video_resample;
208     AVFrame resample_frame;              /* temporary frame for image resampling */
209     struct SwsContext *img_resample_ctx; /* for image resampling */
210     int resample_height;
211     int resample_width;
212     int resample_pix_fmt;
213     AVRational frame_rate;
214     int force_fps;
215     int top_field_first;
216
217     float frame_aspect_ratio;
218
219     /* forced key frames */
220     int64_t *forced_kf_pts;
221     int forced_kf_count;
222     int forced_kf_index;
223
224     /* audio only */
225     int audio_resample;
226     ReSampleContext *resample; /* for audio resampling */
227     int resample_sample_fmt;
228     int resample_channels;
229     int resample_sample_rate;
230     int reformat_pair;
231     AVAudioConvert *reformat_ctx;
232     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
233     FILE *logfile;
234
235 #if CONFIG_AVFILTER
236     AVFilterContext *output_video_filter;
237     AVFilterContext *input_video_filter;
238     AVFilterBufferRef *picref;
239     char *avfilter;
240     AVFilterGraph *graph;
241 #endif
242
243     int64_t sws_flags;
244     AVDictionary *opts;
245     int is_past_recording_time;
246     int stream_copy;
247     const char *attachment_filename;
248     int copy_initial_nonkeyframes;
249 } OutputStream;
250
251 #if HAVE_TERMIOS_H
252
253 /* init terminal so that we can grab keys */
254 static struct termios oldtty;
255 #endif
256
257 typedef struct OutputFile {
258     AVFormatContext *ctx;
259     AVDictionary *opts;
260     int ost_index;       /* index of the first stream in output_streams */
261     int64_t recording_time; /* desired length of the resulting file in microseconds */
262     int64_t start_time;     /* start time in microseconds */
263     uint64_t limit_filesize;
264 } OutputFile;
265
266 static InputStream *input_streams = NULL;
267 static int         nb_input_streams = 0;
268 static InputFile   *input_files   = NULL;
269 static int         nb_input_files   = 0;
270
271 static OutputStream *output_streams = NULL;
272 static int        nb_output_streams = 0;
273 static OutputFile   *output_files   = NULL;
274 static int        nb_output_files   = 0;
275
276 typedef struct OptionsContext {
277     /* input/output options */
278     int64_t start_time;
279     const char *format;
280
281     SpecifierOpt *codec_names;
282     int        nb_codec_names;
283     SpecifierOpt *audio_channels;
284     int        nb_audio_channels;
285     SpecifierOpt *audio_sample_rate;
286     int        nb_audio_sample_rate;
287     SpecifierOpt *frame_rates;
288     int        nb_frame_rates;
289     SpecifierOpt *frame_sizes;
290     int        nb_frame_sizes;
291     SpecifierOpt *frame_pix_fmts;
292     int        nb_frame_pix_fmts;
293
294     /* input options */
295     int64_t input_ts_offset;
296     int rate_emu;
297
298     SpecifierOpt *ts_scale;
299     int        nb_ts_scale;
300     SpecifierOpt *dump_attachment;
301     int        nb_dump_attachment;
302
303     /* output options */
304     StreamMap *stream_maps;
305     int     nb_stream_maps;
306     /* first item specifies output metadata, second is input */
307     MetadataMap (*meta_data_maps)[2];
308     int nb_meta_data_maps;
309     int metadata_global_manual;
310     int metadata_streams_manual;
311     int metadata_chapters_manual;
312     const char **attachments;
313     int       nb_attachments;
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     SpecifierOpt *metadata_map;
358     int        nb_metadata_map;
359     SpecifierOpt *presets;
360     int        nb_presets;
361     SpecifierOpt *copy_initial_nonkeyframes;
362     int        nb_copy_initial_nonkeyframes;
363 #if CONFIG_AVFILTER
364     SpecifierOpt *filters;
365     int        nb_filters;
366 #endif
367 } OptionsContext;
368
369 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
370 {\
371     int i, ret;\
372     for (i = 0; i < o->nb_ ## name; i++) {\
373         char *spec = o->name[i].specifier;\
374         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
375             outvar = o->name[i].u.type;\
376         else if (ret < 0)\
377             exit_program(1);\
378     }\
379 }
380
381 static void reset_options(OptionsContext *o)
382 {
383     const OptionDef *po = options;
384
385     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
386     while (po->name) {
387         void *dst = (uint8_t*)o + po->u.off;
388
389         if (po->flags & OPT_SPEC) {
390             SpecifierOpt **so = dst;
391             int i, *count = (int*)(so + 1);
392             for (i = 0; i < *count; i++) {
393                 av_freep(&(*so)[i].specifier);
394                 if (po->flags & OPT_STRING)
395                     av_freep(&(*so)[i].u.str);
396             }
397             av_freep(so);
398             *count = 0;
399         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
400             av_freep(dst);
401         po++;
402     }
403
404     av_freep(&o->stream_maps);
405     av_freep(&o->meta_data_maps);
406     av_freep(&o->streamid_map);
407
408     memset(o, 0, sizeof(*o));
409
410     o->mux_max_delay  = 0.7;
411     o->recording_time = INT64_MAX;
412     o->limit_filesize = UINT64_MAX;
413     o->chapters_input_file = INT_MAX;
414
415     uninit_opts();
416     init_opts();
417 }
418
419 #if CONFIG_AVFILTER
420
421 static int configure_video_filters(InputStream *ist, OutputStream *ost)
422 {
423     AVFilterContext *last_filter, *filter;
424     /** filter graph containing all filters including input & output */
425     AVCodecContext *codec = ost->st->codec;
426     AVCodecContext *icodec = ist->st->codec;
427     enum PixelFormat pix_fmts[] = { codec->pix_fmt, PIX_FMT_NONE };
428     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
429     AVRational sample_aspect_ratio;
430     char args[255];
431     int ret;
432
433     ost->graph = avfilter_graph_alloc();
434
435     if (ist->st->sample_aspect_ratio.num){
436         sample_aspect_ratio = ist->st->sample_aspect_ratio;
437     }else
438         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
439
440     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
441              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
442              sample_aspect_ratio.num, sample_aspect_ratio.den);
443
444     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
445                                        "src", args, NULL, ost->graph);
446     if (ret < 0)
447         return ret;
448 #if FF_API_OLD_VSINK_API
449     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
450                                        "out", NULL, pix_fmts, ost->graph);
451 #else
452     buffersink_params->pixel_fmts = pix_fmts;
453     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
454                                        "out", NULL, buffersink_params, ost->graph);
455 #endif
456     av_freep(&buffersink_params);
457     if (ret < 0)
458         return ret;
459     last_filter = ost->input_video_filter;
460
461     if (codec->width  != icodec->width || codec->height != icodec->height) {
462         snprintf(args, 255, "%d:%d:flags=0x%X",
463                  codec->width,
464                  codec->height,
465                  (unsigned)ost->sws_flags);
466         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
467                                                 NULL, args, NULL, ost->graph)) < 0)
468             return ret;
469         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
470             return ret;
471         last_filter = filter;
472     }
473
474     snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
475     ost->graph->scale_sws_opts = av_strdup(args);
476
477     if (ost->avfilter) {
478         AVFilterInOut *outputs = avfilter_inout_alloc();
479         AVFilterInOut *inputs  = avfilter_inout_alloc();
480
481         outputs->name    = av_strdup("in");
482         outputs->filter_ctx = last_filter;
483         outputs->pad_idx = 0;
484         outputs->next    = NULL;
485
486         inputs->name    = av_strdup("out");
487         inputs->filter_ctx = ost->output_video_filter;
488         inputs->pad_idx = 0;
489         inputs->next    = NULL;
490
491         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, &inputs, &outputs, NULL)) < 0)
492             return ret;
493         av_freep(&ost->avfilter);
494     } else {
495         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
496             return ret;
497     }
498
499     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
500         return ret;
501
502     codec->width  = ost->output_video_filter->inputs[0]->w;
503     codec->height = ost->output_video_filter->inputs[0]->h;
504     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
505         ost->frame_aspect_ratio ? // overridden by the -aspect cli option
506         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
507         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
508
509     return 0;
510 }
511 #endif /* CONFIG_AVFILTER */
512
513 static void term_exit(void)
514 {
515     av_log(NULL, AV_LOG_QUIET, "%s", "");
516 #if HAVE_TERMIOS_H
517     if(!run_as_daemon)
518         tcsetattr (0, TCSANOW, &oldtty);
519 #endif
520 }
521
522 static volatile int received_sigterm = 0;
523
524 static void
525 sigterm_handler(int sig)
526 {
527     received_sigterm = sig;
528     q_pressed++;
529     term_exit();
530 }
531
532 static void term_init(void)
533 {
534 #if HAVE_TERMIOS_H
535     if(!run_as_daemon){
536     struct termios tty;
537
538     tcgetattr (0, &tty);
539     oldtty = tty;
540     atexit(term_exit);
541
542     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
543                           |INLCR|IGNCR|ICRNL|IXON);
544     tty.c_oflag |= OPOST;
545     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
546     tty.c_cflag &= ~(CSIZE|PARENB);
547     tty.c_cflag |= CS8;
548     tty.c_cc[VMIN] = 1;
549     tty.c_cc[VTIME] = 0;
550
551     tcsetattr (0, TCSANOW, &tty);
552     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
553     }
554 #endif
555
556     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
557     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
558 #ifdef SIGXCPU
559     signal(SIGXCPU, sigterm_handler);
560 #endif
561 }
562
563 /* read a key without blocking */
564 static int read_key(void)
565 {
566 #if HAVE_TERMIOS_H
567     int n = 1;
568     unsigned char ch;
569     struct timeval tv;
570     fd_set rfds;
571
572     if(run_as_daemon)
573         return -1;
574
575     FD_ZERO(&rfds);
576     FD_SET(0, &rfds);
577     tv.tv_sec = 0;
578     tv.tv_usec = 0;
579     n = select(1, &rfds, NULL, NULL, &tv);
580     if (n > 0) {
581         n = read(0, &ch, 1);
582         if (n == 1)
583             return ch;
584
585         return n;
586     }
587 #elif HAVE_KBHIT
588     if(kbhit())
589         return(getch());
590 #endif
591     return -1;
592 }
593
594 static int decode_interrupt_cb(void *ctx)
595 {
596     q_pressed += read_key() == 'q';
597     return q_pressed > 1;
598 }
599
600 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
601
602 void exit_program(int ret)
603 {
604     int i;
605
606     /* close files */
607     for(i=0;i<nb_output_files;i++) {
608         AVFormatContext *s = output_files[i].ctx;
609         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
610             avio_close(s->pb);
611         avformat_free_context(s);
612         av_dict_free(&output_files[i].opts);
613     }
614     for(i=0;i<nb_input_files;i++) {
615         avformat_close_input(&input_files[i].ctx);
616     }
617     for (i = 0; i < nb_input_streams; i++) {
618         av_freep(&input_streams[i].decoded_frame);
619         av_freep(&input_streams[i].filtered_frame);
620         av_dict_free(&input_streams[i].opts);
621     }
622
623     if (vstats_file)
624         fclose(vstats_file);
625     av_free(vstats_filename);
626
627     av_freep(&input_streams);
628     av_freep(&input_files);
629     av_freep(&output_streams);
630     av_freep(&output_files);
631
632     uninit_opts();
633     av_free(audio_buf);
634     av_free(audio_out);
635     allocated_audio_buf_size= allocated_audio_out_size= 0;
636
637 #if CONFIG_AVFILTER
638     avfilter_uninit();
639 #endif
640     avformat_network_deinit();
641
642     if (received_sigterm) {
643         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
644                (int) received_sigterm);
645         exit (255);
646     }
647
648     exit(ret);
649 }
650
651 static void assert_avoptions(AVDictionary *m)
652 {
653     AVDictionaryEntry *t;
654     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
655         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
656         exit_program(1);
657     }
658 }
659
660 static void assert_codec_experimental(AVCodecContext *c, int encoder)
661 {
662     const char *codec_string = encoder ? "encoder" : "decoder";
663     AVCodec *codec;
664     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
665         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
666         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
667                 "results.\nAdd '-strict experimental' if you want to use it.\n",
668                 codec_string, c->codec->name);
669         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
670         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
671             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
672                    codec_string, codec->name);
673         exit_program(1);
674     }
675 }
676
677 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
678 {
679     if(codec && codec->sample_fmts){
680         const enum AVSampleFormat *p= codec->sample_fmts;
681         for(; *p!=-1; p++){
682             if(*p == st->codec->sample_fmt)
683                 break;
684         }
685         if (*p == -1) {
686             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
687                 av_log(NULL, AV_LOG_ERROR, "Convertion will not be lossless'\n");
688             if(av_get_sample_fmt_name(st->codec->sample_fmt))
689             av_log(NULL, AV_LOG_WARNING,
690                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
691                    av_get_sample_fmt_name(st->codec->sample_fmt),
692                    codec->name,
693                    av_get_sample_fmt_name(codec->sample_fmts[0]));
694             st->codec->sample_fmt = codec->sample_fmts[0];
695         }
696     }
697 }
698
699 static void choose_sample_rate(AVStream *st, AVCodec *codec)
700 {
701     if(codec && codec->supported_samplerates){
702         const int *p= codec->supported_samplerates;
703         int best=0;
704         int best_dist=INT_MAX;
705         for(; *p; p++){
706             int dist= abs(st->codec->sample_rate - *p);
707             if(dist < best_dist){
708                 best_dist= dist;
709                 best= *p;
710             }
711         }
712         if(best_dist){
713             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
714         }
715         st->codec->sample_rate= best;
716     }
717 }
718
719 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
720 {
721     if(codec && codec->pix_fmts){
722         const enum PixelFormat *p= codec->pix_fmts;
723         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
724             if(st->codec->codec_id==CODEC_ID_MJPEG){
725                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
726             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
727                 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};
728             }
729         }
730         for (; *p != PIX_FMT_NONE; p++) {
731             if(*p == st->codec->pix_fmt)
732                 break;
733         }
734         if (*p == PIX_FMT_NONE) {
735             if(st->codec->pix_fmt != PIX_FMT_NONE)
736                 av_log(NULL, AV_LOG_WARNING,
737                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
738                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
739                         codec->name,
740                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
741             st->codec->pix_fmt = codec->pix_fmts[0];
742         }
743     }
744 }
745
746 static double
747 get_sync_ipts(const OutputStream *ost)
748 {
749     const InputStream *ist = ost->sync_ist;
750     OutputFile *of = &output_files[ost->file_index];
751     return (double)(ist->pts - of->start_time)/AV_TIME_BASE;
752 }
753
754 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
755     int ret;
756
757     while(bsfc){
758         AVPacket new_pkt= *pkt;
759         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
760                                           &new_pkt.data, &new_pkt.size,
761                                           pkt->data, pkt->size,
762                                           pkt->flags & AV_PKT_FLAG_KEY);
763         if(a>0){
764             av_free_packet(pkt);
765             new_pkt.destruct= av_destruct_packet;
766         } else if(a<0){
767             av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
768                    bsfc->filter->name, pkt->stream_index,
769                    avctx->codec ? avctx->codec->name : "copy");
770             print_error("", a);
771             if (exit_on_error)
772                 exit_program(1);
773         }
774         *pkt= new_pkt;
775
776         bsfc= bsfc->next;
777     }
778
779     ret= av_interleaved_write_frame(s, pkt);
780     if(ret < 0){
781         print_error("av_interleaved_write_frame()", ret);
782         exit_program(1);
783     }
784 }
785
786 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
787 {
788     int fill_char = 0x00;
789     if (sample_fmt == AV_SAMPLE_FMT_U8)
790         fill_char = 0x80;
791     memset(buf, fill_char, size);
792 }
793
794 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
795                          InputStream *ist, AVFrame *decoded_frame)
796 {
797     uint8_t *buftmp;
798     int64_t audio_out_size, audio_buf_size;
799
800     int size_out, frame_bytes, ret, resample_changed;
801     AVCodecContext *enc= ost->st->codec;
802     AVCodecContext *dec= ist->st->codec;
803     int osize = av_get_bytes_per_sample(enc->sample_fmt);
804     int isize = av_get_bytes_per_sample(dec->sample_fmt);
805     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
806     uint8_t *buf = decoded_frame->data[0];
807     int size     = decoded_frame->nb_samples * dec->channels * isize;
808     int64_t allocated_for_size = size;
809
810 need_realloc:
811     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
812     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
813     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
814     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
815     audio_buf_size*= osize*enc->channels;
816
817     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
818     if(coded_bps > 8*osize)
819         audio_out_size= audio_out_size * coded_bps / (8*osize);
820     audio_out_size += FF_MIN_BUFFER_SIZE;
821
822     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
823         av_log(NULL, AV_LOG_FATAL, "Buffer sizes too large\n");
824         exit_program(1);
825     }
826
827     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
828     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
829     if (!audio_buf || !audio_out){
830         av_log(NULL, AV_LOG_FATAL, "Out of memory in do_audio_out\n");
831         exit_program(1);
832     }
833
834     if (enc->channels != dec->channels)
835         ost->audio_resample = 1;
836
837     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
838                        ost->resample_channels    != dec->channels   ||
839                        ost->resample_sample_rate != dec->sample_rate;
840
841     if ((ost->audio_resample && !ost->resample) || resample_changed) {
842         if (resample_changed) {
843             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",
844                    ist->file_index, ist->st->index,
845                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
846                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
847             ost->resample_sample_fmt  = dec->sample_fmt;
848             ost->resample_channels    = dec->channels;
849             ost->resample_sample_rate = dec->sample_rate;
850             if (ost->resample)
851                 audio_resample_close(ost->resample);
852         }
853         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
854         if (audio_sync_method <= 1 &&
855             ost->resample_sample_fmt  == enc->sample_fmt &&
856             ost->resample_channels    == enc->channels   &&
857             ost->resample_sample_rate == enc->sample_rate) {
858             ost->resample = NULL;
859             ost->audio_resample = 0;
860         } else {
861             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
862                 av_log(NULL, AV_LOG_WARNING, "Using s16 intermediate sample format for resampling\n");
863             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
864                                                    enc->sample_rate, dec->sample_rate,
865                                                    enc->sample_fmt,  dec->sample_fmt,
866                                                    16, 10, 0, 0.8);
867             if (!ost->resample) {
868                 av_log(NULL, AV_LOG_FATAL, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
869                        dec->channels, dec->sample_rate,
870                        enc->channels, enc->sample_rate);
871                 exit_program(1);
872             }
873         }
874     }
875
876 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
877     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
878         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
879         if (ost->reformat_ctx)
880             av_audio_convert_free(ost->reformat_ctx);
881         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
882                                                    dec->sample_fmt, 1, NULL, 0);
883         if (!ost->reformat_ctx) {
884             av_log(NULL, AV_LOG_FATAL, "Cannot convert %s sample format to %s sample format\n",
885                    av_get_sample_fmt_name(dec->sample_fmt),
886                    av_get_sample_fmt_name(enc->sample_fmt));
887             exit_program(1);
888         }
889         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
890     }
891
892     if(audio_sync_method){
893         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
894                 - av_fifo_size(ost->fifo)/(enc->channels * osize);
895         int idelta = delta * dec->sample_rate / enc->sample_rate;
896         int byte_delta = idelta * isize * dec->channels;
897
898         //FIXME resample delay
899         if(fabs(delta) > 50){
900             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
901                 if(byte_delta < 0){
902                     byte_delta= FFMAX(byte_delta, -size);
903                     size += byte_delta;
904                     buf  -= byte_delta;
905                     av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n",
906                            -byte_delta / (isize * dec->channels));
907                     if(!size)
908                         return;
909                     ist->is_start=0;
910                 }else{
911                     static uint8_t *input_tmp= NULL;
912                     input_tmp= av_realloc(input_tmp, byte_delta + size);
913
914                     if(byte_delta > allocated_for_size - size){
915                         allocated_for_size= byte_delta + (int64_t)size;
916                         goto need_realloc;
917                     }
918                     ist->is_start=0;
919
920                     generate_silence(input_tmp, dec->sample_fmt, byte_delta);
921                     memcpy(input_tmp + byte_delta, buf, size);
922                     buf= input_tmp;
923                     size += byte_delta;
924                     av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", idelta);
925                 }
926             }else if(audio_sync_method>1){
927                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
928                 av_assert0(ost->audio_resample);
929                 av_log(NULL, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n",
930                        delta, comp, enc->sample_rate);
931 //                fprintf(stderr, "drift:%f len:%d opts:%"PRId64" ipts:%"PRId64" fifo:%d\n", delta, -1, ost->sync_opts, (int64_t)(get_sync_ipts(ost) * enc->sample_rate), av_fifo_size(ost->fifo)/(ost->st->codec->channels * 2));
932                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
933             }
934         }
935     }else
936         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
937                         - av_fifo_size(ost->fifo)/(enc->channels * osize); //FIXME wrong
938
939     if (ost->audio_resample) {
940         buftmp = audio_buf;
941         size_out = audio_resample(ost->resample,
942                                   (short *)buftmp, (short *)buf,
943                                   size / (dec->channels * isize));
944         size_out = size_out * enc->channels * osize;
945     } else {
946         buftmp = buf;
947         size_out = size;
948     }
949
950     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
951         const void *ibuf[6]= {buftmp};
952         void *obuf[6]= {audio_buf};
953         int istride[6]= {isize};
954         int ostride[6]= {osize};
955         int len= size_out/istride[0];
956         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
957             printf("av_audio_convert() failed\n");
958             if (exit_on_error)
959                 exit_program(1);
960             return;
961         }
962         buftmp = audio_buf;
963         size_out = len*osize;
964     }
965
966     /* now encode as many frames as possible */
967     if (enc->frame_size > 1) {
968         /* output resampled raw samples */
969         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
970             av_log(NULL, AV_LOG_FATAL, "av_fifo_realloc2() failed\n");
971             exit_program(1);
972         }
973         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
974
975         frame_bytes = enc->frame_size * osize * enc->channels;
976
977         while (av_fifo_size(ost->fifo) >= frame_bytes) {
978             AVPacket pkt;
979             av_init_packet(&pkt);
980
981             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
982
983             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
984
985             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
986                                        (short *)audio_buf);
987             if (ret < 0) {
988                 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
989                 exit_program(1);
990             }
991             audio_size += ret;
992             pkt.stream_index= ost->index;
993             pkt.data= audio_out;
994             pkt.size= ret;
995             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
996                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
997             pkt.flags |= AV_PKT_FLAG_KEY;
998             write_frame(s, &pkt, enc, ost->bitstream_filters);
999
1000             ost->sync_opts += enc->frame_size;
1001         }
1002     } else {
1003         AVPacket pkt;
1004         av_init_packet(&pkt);
1005
1006         ost->sync_opts += size_out / (osize * enc->channels);
1007
1008         /* output a pcm frame */
1009         /* determine the size of the coded buffer */
1010         size_out /= osize;
1011         if (coded_bps)
1012             size_out = size_out*coded_bps/8;
1013
1014         if(size_out > audio_out_size){
1015             av_log(NULL, AV_LOG_FATAL, "Internal error, buffer size too small\n");
1016             exit_program(1);
1017         }
1018
1019         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1020         ret = avcodec_encode_audio(enc, audio_out, size_out,
1021                                    (short *)buftmp);
1022         if (ret < 0) {
1023             av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1024             exit_program(1);
1025         }
1026         audio_size += ret;
1027         pkt.stream_index= ost->index;
1028         pkt.data= audio_out;
1029         pkt.size= ret;
1030         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1031             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1032         pkt.flags |= AV_PKT_FLAG_KEY;
1033         write_frame(s, &pkt, enc, ost->bitstream_filters);
1034     }
1035 }
1036
1037 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1038 {
1039     AVCodecContext *dec;
1040     AVPicture *picture2;
1041     AVPicture picture_tmp;
1042     uint8_t *buf = 0;
1043
1044     dec = ist->st->codec;
1045
1046     /* deinterlace : must be done before any resize */
1047     if (do_deinterlace) {
1048         int size;
1049
1050         /* create temporary picture */
1051         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1052         buf = av_malloc(size);
1053         if (!buf)
1054             return;
1055
1056         picture2 = &picture_tmp;
1057         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1058
1059         if(avpicture_deinterlace(picture2, picture,
1060                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1061             /* if error, do not deinterlace */
1062             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1063             av_free(buf);
1064             buf = NULL;
1065             picture2 = picture;
1066         }
1067     } else {
1068         picture2 = picture;
1069     }
1070
1071     if (picture != picture2)
1072         *picture = *picture2;
1073     *bufp = buf;
1074 }
1075
1076 static void do_subtitle_out(AVFormatContext *s,
1077                             OutputStream *ost,
1078                             InputStream *ist,
1079                             AVSubtitle *sub,
1080                             int64_t pts)
1081 {
1082     static uint8_t *subtitle_out = NULL;
1083     int subtitle_out_max_size = 1024 * 1024;
1084     int subtitle_out_size, nb, i;
1085     AVCodecContext *enc;
1086     AVPacket pkt;
1087
1088     if (pts == AV_NOPTS_VALUE) {
1089         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1090         if (exit_on_error)
1091             exit_program(1);
1092         return;
1093     }
1094
1095     enc = ost->st->codec;
1096
1097     if (!subtitle_out) {
1098         subtitle_out = av_malloc(subtitle_out_max_size);
1099     }
1100
1101     /* Note: DVB subtitle need one packet to draw them and one other
1102        packet to clear them */
1103     /* XXX: signal it in the codec context ? */
1104     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1105         nb = 2;
1106     else
1107         nb = 1;
1108
1109     for(i = 0; i < nb; i++) {
1110         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1111         // start_display_time is required to be 0
1112         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1113         sub->end_display_time -= sub->start_display_time;
1114         sub->start_display_time = 0;
1115         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1116                                                     subtitle_out_max_size, sub);
1117         if (subtitle_out_size < 0) {
1118             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1119             exit_program(1);
1120         }
1121
1122         av_init_packet(&pkt);
1123         pkt.stream_index = ost->index;
1124         pkt.data = subtitle_out;
1125         pkt.size = subtitle_out_size;
1126         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1127         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1128             /* XXX: the pts correction is handled here. Maybe handling
1129                it in the codec would be better */
1130             if (i == 0)
1131                 pkt.pts += 90 * sub->start_display_time;
1132             else
1133                 pkt.pts += 90 * sub->end_display_time;
1134         }
1135         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1136     }
1137 }
1138
1139 static int bit_buffer_size= 1024*256;
1140 static uint8_t *bit_buffer= NULL;
1141
1142 static void do_video_resample(OutputStream *ost,
1143                               InputStream *ist,
1144                               AVFrame *in_picture,
1145                               AVFrame **out_picture)
1146 {
1147     int resample_changed = 0;
1148     AVCodecContext *dec = ist->st->codec;
1149     AVCodecContext *enc = ost->st->codec;
1150     *out_picture = in_picture;
1151
1152     resample_changed = ost->resample_width   != dec->width  ||
1153                        ost->resample_height  != dec->height ||
1154                        ost->resample_pix_fmt != dec->pix_fmt;
1155
1156 #if !CONFIG_AVFILTER
1157     if (resample_changed) {
1158         av_log(NULL, AV_LOG_INFO,
1159                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1160                ist->file_index, ist->st->index,
1161                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1162                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1163         ost->resample_width   = dec->width;
1164         ost->resample_height  = dec->height;
1165         ost->resample_pix_fmt = dec->pix_fmt;
1166     }
1167
1168     ost->video_resample = dec->width   != enc->width  ||
1169                           dec->height  != enc->height ||
1170                           dec->pix_fmt != enc->pix_fmt;
1171
1172     if (ost->video_resample) {
1173         *out_picture = &ost->resample_frame;
1174         if (!ost->img_resample_ctx || resample_changed) {
1175             /* initialize the destination picture */
1176             if (!ost->resample_frame.data[0]) {
1177                 avcodec_get_frame_defaults(&ost->resample_frame);
1178                 if (avpicture_alloc((AVPicture *)&ost->resample_frame, enc->pix_fmt,
1179                                     enc->width, enc->height)) {
1180                     fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
1181                     exit_program(1);
1182                 }
1183             }
1184             /* initialize a new scaler context */
1185             sws_freeContext(ost->img_resample_ctx);
1186             ost->img_resample_ctx = sws_getContext(dec->width, dec->height, dec->pix_fmt,
1187                                                    enc->width, enc->height, enc->pix_fmt,
1188                                                    ost->sws_flags, NULL, NULL, NULL);
1189             if (ost->img_resample_ctx == NULL) {
1190                 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
1191                 exit_program(1);
1192             }
1193         }
1194         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1195               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1196     }
1197 #else
1198     if (resample_changed) {
1199         avfilter_graph_free(&ost->graph);
1200         if (configure_video_filters(ist, ost)) {
1201             av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1202             exit_program(1);
1203         }
1204     }
1205 #endif
1206     if (resample_changed) {
1207         ost->resample_width   = dec->width;
1208         ost->resample_height  = dec->height;
1209         ost->resample_pix_fmt = dec->pix_fmt;
1210     }
1211 }
1212
1213
1214 static void do_video_out(AVFormatContext *s,
1215                          OutputStream *ost,
1216                          InputStream *ist,
1217                          AVFrame *in_picture,
1218                          int *frame_size, float quality)
1219 {
1220     int nb_frames, i, ret, format_video_sync;
1221     AVFrame *final_picture;
1222     AVCodecContext *enc;
1223     double sync_ipts;
1224
1225     enc = ost->st->codec;
1226
1227     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1228
1229     /* by default, we output a single frame */
1230     nb_frames = 1;
1231
1232     *frame_size = 0;
1233
1234     format_video_sync = video_sync_method;
1235     if (format_video_sync < 0)
1236         format_video_sync = (s->oformat->flags & AVFMT_NOTIMESTAMPS) ? 0 :
1237                             (s->oformat->flags & AVFMT_VARIABLE_FPS) ? 2 : 1;
1238
1239     if (format_video_sync) {
1240         double vdelta = sync_ipts - ost->sync_opts;
1241         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1242         if (vdelta < -1.1)
1243             nb_frames = 0;
1244         else if (format_video_sync == 2) {
1245             if(vdelta<=-0.6){
1246                 nb_frames=0;
1247             }else if(vdelta>0.6)
1248                 ost->sync_opts= lrintf(sync_ipts);
1249         }else if (vdelta > 1.1)
1250             nb_frames = lrintf(vdelta);
1251 //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);
1252         if (nb_frames == 0){
1253             ++nb_frames_drop;
1254             av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1255         }else if (nb_frames > 1) {
1256             nb_frames_dup += nb_frames - 1;
1257             av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames-1);
1258         }
1259     }else
1260         ost->sync_opts= lrintf(sync_ipts);
1261
1262     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1263     if (nb_frames <= 0)
1264         return;
1265
1266     do_video_resample(ost, ist, in_picture, &final_picture);
1267
1268     /* duplicates frame if needed */
1269     for(i=0;i<nb_frames;i++) {
1270         AVPacket pkt;
1271         av_init_packet(&pkt);
1272         pkt.stream_index= ost->index;
1273
1274         if (s->oformat->flags & AVFMT_RAWPICTURE &&
1275             enc->codec->id == CODEC_ID_RAWVIDEO) {
1276             /* raw pictures are written as AVPicture structure to
1277                avoid any copies. We support temporarily the older
1278                method. */
1279             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1280             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1281             pkt.data= (uint8_t *)final_picture;
1282             pkt.size=  sizeof(AVPicture);
1283             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1284             pkt.flags |= AV_PKT_FLAG_KEY;
1285
1286             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1287         } else {
1288             AVFrame big_picture;
1289
1290             big_picture= *final_picture;
1291             /* better than nothing: use input picture interlaced
1292                settings */
1293             big_picture.interlaced_frame = in_picture->interlaced_frame;
1294             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1295                 if (ost->top_field_first == -1)
1296                     big_picture.top_field_first = in_picture->top_field_first;
1297                 else
1298                     big_picture.top_field_first = !!ost->top_field_first;
1299             }
1300
1301             /* handles same_quant here. This is not correct because it may
1302                not be a global option */
1303             big_picture.quality = quality;
1304             if (!enc->me_threshold)
1305                 big_picture.pict_type = 0;
1306 //            big_picture.pts = AV_NOPTS_VALUE;
1307             big_picture.pts= ost->sync_opts;
1308 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1309 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1310             if (ost->forced_kf_index < ost->forced_kf_count &&
1311                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1312                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1313                 ost->forced_kf_index++;
1314             }
1315             ret = avcodec_encode_video(enc,
1316                                        bit_buffer, bit_buffer_size,
1317                                        &big_picture);
1318             if (ret < 0) {
1319                 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1320                 exit_program(1);
1321             }
1322
1323             if(ret>0){
1324                 pkt.data= bit_buffer;
1325                 pkt.size= ret;
1326                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1327                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1328 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1329    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1330    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1331
1332                 if(enc->coded_frame->key_frame)
1333                     pkt.flags |= AV_PKT_FLAG_KEY;
1334                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1335                 *frame_size = ret;
1336                 video_size += ret;
1337                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1338                 //        enc->frame_number-1, ret, enc->pict_type);
1339                 /* if two pass, output log */
1340                 if (ost->logfile && enc->stats_out) {
1341                     fprintf(ost->logfile, "%s", enc->stats_out);
1342                 }
1343             }
1344         }
1345         ost->sync_opts++;
1346         ost->frame_number++;
1347     }
1348 }
1349
1350 static double psnr(double d){
1351     return -10.0*log(d)/log(10.0);
1352 }
1353
1354 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1355                            int frame_size)
1356 {
1357     AVCodecContext *enc;
1358     int frame_number;
1359     double ti1, bitrate, avg_bitrate;
1360
1361     /* this is executed just the first time do_video_stats is called */
1362     if (!vstats_file) {
1363         vstats_file = fopen(vstats_filename, "w");
1364         if (!vstats_file) {
1365             perror("fopen");
1366             exit_program(1);
1367         }
1368     }
1369
1370     enc = ost->st->codec;
1371     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1372         frame_number = ost->frame_number;
1373         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1374         if (enc->flags&CODEC_FLAG_PSNR)
1375             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1376
1377         fprintf(vstats_file,"f_size= %6d ", frame_size);
1378         /* compute pts value */
1379         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1380         if (ti1 < 0.01)
1381             ti1 = 0.01;
1382
1383         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1384         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1385         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1386             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1387         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1388     }
1389 }
1390
1391 static void print_report(OutputFile *output_files,
1392                          OutputStream *ost_table, int nb_ostreams,
1393                          int is_last_report, int64_t timer_start)
1394 {
1395     char buf[1024];
1396     OutputStream *ost;
1397     AVFormatContext *oc;
1398     int64_t total_size;
1399     AVCodecContext *enc;
1400     int frame_number, vid, i;
1401     double bitrate;
1402     int64_t pts = INT64_MAX;
1403     static int64_t last_time = -1;
1404     static int qp_histogram[52];
1405     int hours, mins, secs, us;
1406
1407     if (!print_stats && !is_last_report)
1408         return;
1409
1410     if (!is_last_report) {
1411         int64_t cur_time;
1412         /* display the report every 0.5 seconds */
1413         cur_time = av_gettime();
1414         if (last_time == -1) {
1415             last_time = cur_time;
1416             return;
1417         }
1418         if ((cur_time - last_time) < 500000)
1419             return;
1420         last_time = cur_time;
1421     }
1422
1423
1424     oc = output_files[0].ctx;
1425
1426     total_size = avio_size(oc->pb);
1427     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1428         total_size= avio_tell(oc->pb);
1429
1430     buf[0] = '\0';
1431     vid = 0;
1432     for(i=0;i<nb_ostreams;i++) {
1433         float q = -1;
1434         ost = &ost_table[i];
1435         enc = ost->st->codec;
1436         if (!ost->stream_copy && enc->coded_frame)
1437             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1438         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1439             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1440         }
1441         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1442             float t = (av_gettime()-timer_start) / 1000000.0;
1443
1444             frame_number = ost->frame_number;
1445             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1446                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1447             if(is_last_report)
1448                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1449             if(qp_hist){
1450                 int j;
1451                 int qp = lrintf(q);
1452                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1453                     qp_histogram[qp]++;
1454                 for(j=0; j<32; j++)
1455                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1456             }
1457             if (enc->flags&CODEC_FLAG_PSNR){
1458                 int j;
1459                 double error, error_sum=0;
1460                 double scale, scale_sum=0;
1461                 char type[3]= {'Y','U','V'};
1462                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1463                 for(j=0; j<3; j++){
1464                     if(is_last_report){
1465                         error= enc->error[j];
1466                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1467                     }else{
1468                         error= enc->coded_frame->error[j];
1469                         scale= enc->width*enc->height*255.0*255.0;
1470                     }
1471                     if(j) scale/=4;
1472                     error_sum += error;
1473                     scale_sum += scale;
1474                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1475                 }
1476                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1477             }
1478             vid = 1;
1479         }
1480         /* compute min output value */
1481         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
1482                                       ost->st->time_base, AV_TIME_BASE_Q));
1483     }
1484
1485     secs = pts / AV_TIME_BASE;
1486     us = pts % AV_TIME_BASE;
1487     mins = secs / 60;
1488     secs %= 60;
1489     hours = mins / 60;
1490     mins %= 60;
1491
1492     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1493
1494     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1495              "size=%8.0fkB time=", total_size / 1024.0);
1496     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1497              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1498              (100 * us) / AV_TIME_BASE);
1499     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1500              "bitrate=%6.1fkbits/s", bitrate);
1501
1502     if (nb_frames_dup || nb_frames_drop)
1503         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1504                 nb_frames_dup, nb_frames_drop);
1505
1506     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1507
1508     fflush(stderr);
1509
1510     if (is_last_report) {
1511         int64_t raw= audio_size + video_size + extra_size;
1512         av_log(NULL, AV_LOG_INFO, "\n");
1513         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1514                video_size/1024.0,
1515                audio_size/1024.0,
1516                extra_size/1024.0,
1517                100.0*(total_size - raw)/raw
1518         );
1519     }
1520 }
1521
1522 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1523 {
1524     int i, ret;
1525
1526     for (i = 0; i < nb_ostreams; i++) {
1527         OutputStream   *ost = &ost_table[i];
1528         AVCodecContext *enc = ost->st->codec;
1529         AVFormatContext *os = output_files[ost->file_index].ctx;
1530
1531         if (!ost->encoding_needed)
1532             continue;
1533
1534         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1535             continue;
1536         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
1537             continue;
1538
1539         for(;;) {
1540             AVPacket pkt;
1541             int fifo_bytes;
1542             av_init_packet(&pkt);
1543             pkt.stream_index= ost->index;
1544
1545             switch (ost->st->codec->codec_type) {
1546             case AVMEDIA_TYPE_AUDIO:
1547                 fifo_bytes = av_fifo_size(ost->fifo);
1548                 ret = 0;
1549                 /* encode any samples remaining in fifo */
1550                 if (fifo_bytes > 0) {
1551                     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1552                     int fs_tmp = enc->frame_size;
1553
1554                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1555                     if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1556                         enc->frame_size = fifo_bytes / (osize * enc->channels);
1557                     } else { /* pad */
1558                         int frame_bytes = enc->frame_size*osize*enc->channels;
1559                         if (allocated_audio_buf_size < frame_bytes)
1560                             exit_program(1);
1561                         generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1562                     }
1563
1564                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1565                     pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1566                                               ost->st->time_base.num, enc->sample_rate);
1567                     enc->frame_size = fs_tmp;
1568                 }
1569                 if (ret <= 0) {
1570                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1571                 }
1572                 if (ret < 0) {
1573                     av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1574                     exit_program(1);
1575                 }
1576                 audio_size += ret;
1577                 pkt.flags |= AV_PKT_FLAG_KEY;
1578                 break;
1579             case AVMEDIA_TYPE_VIDEO:
1580                 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1581                 if (ret < 0) {
1582                     av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1583                     exit_program(1);
1584                 }
1585                 video_size += ret;
1586                 if(enc->coded_frame && enc->coded_frame->key_frame)
1587                     pkt.flags |= AV_PKT_FLAG_KEY;
1588                 if (ost->logfile && enc->stats_out) {
1589                     fprintf(ost->logfile, "%s", enc->stats_out);
1590                 }
1591                 break;
1592             default:
1593                 ret=-1;
1594             }
1595
1596             if (ret <= 0)
1597                 break;
1598             pkt.data = bit_buffer;
1599             pkt.size = ret;
1600             if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1601                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1602             write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1603         }
1604     }
1605 }
1606
1607 /*
1608  * Check whether a packet from ist should be written into ost at this time
1609  */
1610 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1611 {
1612     OutputFile *of = &output_files[ost->file_index];
1613     int ist_index  = ist - input_streams;
1614
1615     if (ost->source_index != ist_index)
1616         return 0;
1617
1618     if (of->start_time && ist->pts < of->start_time)
1619         return 0;
1620
1621     if (of->recording_time != INT64_MAX &&
1622         av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1623                       (AVRational){1, 1000000}) >= 0) {
1624         ost->is_past_recording_time = 1;
1625         return 0;
1626     }
1627
1628     return 1;
1629 }
1630
1631 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1632 {
1633     OutputFile *of = &output_files[ost->file_index];
1634     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1635     AVPicture pict;
1636     AVPacket opkt;
1637
1638     av_init_packet(&opkt);
1639
1640     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1641         !ost->copy_initial_nonkeyframes)
1642         return;
1643
1644     /* force the input stream PTS */
1645     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1646         audio_size += pkt->size;
1647     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1648         video_size += pkt->size;
1649         ost->sync_opts++;
1650     }
1651
1652     opkt.stream_index = ost->index;
1653     if (pkt->pts != AV_NOPTS_VALUE)
1654         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1655     else
1656         opkt.pts = AV_NOPTS_VALUE;
1657
1658     if (pkt->dts == AV_NOPTS_VALUE)
1659         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1660     else
1661         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1662     opkt.dts -= ost_tb_start_time;
1663
1664     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1665     opkt.flags    = pkt->flags;
1666
1667     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1668     if(   ost->st->codec->codec_id != CODEC_ID_H264
1669        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1670        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1671        ) {
1672         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1673             opkt.destruct = av_destruct_packet;
1674     } else {
1675         opkt.data = pkt->data;
1676         opkt.size = pkt->size;
1677     }
1678     if (of->ctx->oformat->flags & AVFMT_RAWPICTURE) {
1679         /* store AVPicture in AVPacket, as expected by the output format */
1680         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1681         opkt.data = (uint8_t *)&pict;
1682         opkt.size = sizeof(AVPicture);
1683         opkt.flags |= AV_PKT_FLAG_KEY;
1684     }
1685
1686     write_frame(of->ctx, &opkt, ost->st->codec, ost->bitstream_filters);
1687     ost->st->codec->frame_number++;
1688     ost->frame_number++;
1689     av_free_packet(&opkt);
1690 }
1691
1692 static void rate_emu_sleep(InputStream *ist)
1693 {
1694     if (input_files[ist->file_index].rate_emu) {
1695         int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1696         int64_t now = av_gettime() - ist->start;
1697         if (pts > now)
1698             usleep(pts - now);
1699     }
1700 }
1701
1702 static int transcode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1703 {
1704     AVFrame *decoded_frame;
1705     AVCodecContext *avctx = ist->st->codec;
1706     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1707     int i, ret;
1708
1709     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1710         return AVERROR(ENOMEM);
1711     else
1712         avcodec_get_frame_defaults(ist->decoded_frame);
1713     decoded_frame = ist->decoded_frame;
1714
1715     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1716     if (ret < 0) {
1717         return ret;
1718     }
1719
1720     if (!*got_output) {
1721         /* no audio frame */
1722         return ret;
1723     }
1724
1725     /* if the decoder provides a pts, use it instead of the last packet pts.
1726        the decoder could be delaying output by a packet or more. */
1727     if (decoded_frame->pts != AV_NOPTS_VALUE)
1728         ist->next_pts = decoded_frame->pts;
1729
1730     /* increment next_pts to use for the case where the input stream does not
1731        have timestamps or there are multiple frames in the packet */
1732     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1733                      avctx->sample_rate;
1734
1735     // preprocess audio (volume)
1736     if (audio_volume != 256) {
1737         int decoded_data_size = decoded_frame->nb_samples * avctx->channels * bps;
1738         void *samples = decoded_frame->data[0];
1739         switch (avctx->sample_fmt) {
1740         case AV_SAMPLE_FMT_U8:
1741         {
1742             uint8_t *volp = samples;
1743             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1744                 int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
1745                 *volp++ = av_clip_uint8(v);
1746             }
1747             break;
1748         }
1749         case AV_SAMPLE_FMT_S16:
1750         {
1751             int16_t *volp = samples;
1752             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1753                 int v = ((*volp) * audio_volume + 128) >> 8;
1754                 *volp++ = av_clip_int16(v);
1755             }
1756             break;
1757         }
1758         case AV_SAMPLE_FMT_S32:
1759         {
1760             int32_t *volp = samples;
1761             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1762                 int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
1763                 *volp++ = av_clipl_int32(v);
1764             }
1765             break;
1766         }
1767         case AV_SAMPLE_FMT_FLT:
1768         {
1769             float *volp = samples;
1770             float scale = audio_volume / 256.f;
1771             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1772                 *volp++ *= scale;
1773             }
1774             break;
1775         }
1776         case AV_SAMPLE_FMT_DBL:
1777         {
1778             double *volp = samples;
1779             double scale = audio_volume / 256.;
1780             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1781                 *volp++ *= scale;
1782             }
1783             break;
1784         }
1785         default:
1786             av_log(NULL, AV_LOG_FATAL,
1787                    "Audio volume adjustment on sample format %s is not supported.\n",
1788                    av_get_sample_fmt_name(ist->st->codec->sample_fmt));
1789             exit_program(1);
1790         }
1791     }
1792
1793     rate_emu_sleep(ist);
1794
1795     for (i = 0; i < nb_output_streams; i++) {
1796         OutputStream *ost = &output_streams[i];
1797
1798         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1799             continue;
1800         do_audio_out(output_files[ost->file_index].ctx, ost, ist, decoded_frame);
1801     }
1802
1803     return ret;
1804 }
1805
1806 static int transcode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *pkt_pts)
1807 {
1808     AVFrame *decoded_frame, *filtered_frame = NULL;
1809     void *buffer_to_free = NULL;
1810     int i, ret = 0;
1811     float quality;
1812 #if CONFIG_AVFILTER
1813     int frame_available = 1;
1814 #endif
1815
1816     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1817         return AVERROR(ENOMEM);
1818     else
1819         avcodec_get_frame_defaults(ist->decoded_frame);
1820     decoded_frame = ist->decoded_frame;
1821     pkt->pts  = *pkt_pts;
1822     pkt->dts  = ist->pts;
1823     *pkt_pts  = AV_NOPTS_VALUE;
1824
1825     ret = avcodec_decode_video2(ist->st->codec,
1826                                 decoded_frame, got_output, pkt);
1827     if (ret < 0)
1828         return ret;
1829
1830     quality = same_quant ? decoded_frame->quality : 0;
1831     if (!*got_output) {
1832         /* no picture yet */
1833         return ret;
1834     }
1835     ist->next_pts = ist->pts = decoded_frame->best_effort_timestamp;
1836     if (pkt->duration)
1837         ist->next_pts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1838     else if (ist->st->codec->time_base.num != 0) {
1839         int ticks      = ist->st->parser ? ist->st->parser->repeat_pict + 1 :
1840                                            ist->st->codec->ticks_per_frame;
1841         ist->next_pts += ((int64_t)AV_TIME_BASE *
1842                           ist->st->codec->time_base.num * ticks) /
1843                           ist->st->codec->time_base.den;
1844     }
1845     pkt->size = 0;
1846     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1847
1848     rate_emu_sleep(ist);
1849
1850     for (i = 0; i < nb_output_streams; i++) {
1851         OutputStream *ost = &output_streams[i];
1852         int frame_size;
1853
1854         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1855             continue;
1856
1857 #if CONFIG_AVFILTER
1858         if (ost->input_video_filter) {
1859             if (!decoded_frame->sample_aspect_ratio.num)
1860                 decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1861             decoded_frame->pts = ist->pts;
1862
1863             av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame, AV_VSRC_BUF_FLAG_OVERWRITE);
1864             if (!ist->filtered_frame && !(ist->filtered_frame = avcodec_alloc_frame())) {
1865                 av_free(buffer_to_free);
1866                 return AVERROR(ENOMEM);
1867             } else
1868                 avcodec_get_frame_defaults(ist->filtered_frame);
1869             filtered_frame = ist->filtered_frame;
1870             frame_available = avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1871         }
1872         while (frame_available) {
1873             if (ost->output_video_filter) {
1874                 AVRational ist_pts_tb = ost->output_video_filter->inputs[0]->time_base;
1875                 if (av_buffersink_get_buffer_ref(ost->output_video_filter, &ost->picref, 0) < 0)
1876                     goto cont;
1877                 if (ost->picref) {
1878                     avfilter_fill_frame_from_video_buffer_ref(filtered_frame, ost->picref);
1879                     ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1880                 }
1881             }
1882             if (ost->picref->video && !ost->frame_aspect_ratio)
1883                 ost->st->codec->sample_aspect_ratio = ost->picref->video->sample_aspect_ratio;
1884 #else
1885             filtered_frame = decoded_frame;
1886 #endif
1887
1888             do_video_out(output_files[ost->file_index].ctx, ost, ist, filtered_frame, &frame_size,
1889                          same_quant ? quality : ost->st->codec->global_quality);
1890             if (vstats_filename && frame_size)
1891                 do_video_stats(output_files[ost->file_index].ctx, ost, frame_size);
1892 #if CONFIG_AVFILTER
1893             cont:
1894             frame_available = ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1895             if (ost->picref)
1896                 avfilter_unref_buffer(ost->picref);
1897         }
1898 #endif
1899     }
1900
1901     av_free(buffer_to_free);
1902     return ret;
1903 }
1904
1905 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1906 {
1907     AVSubtitle subtitle;
1908     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1909                                           &subtitle, got_output, pkt);
1910     if (ret < 0)
1911         return ret;
1912     if (!*got_output)
1913         return ret;
1914
1915     rate_emu_sleep(ist);
1916
1917     for (i = 0; i < nb_output_streams; i++) {
1918         OutputStream *ost = &output_streams[i];
1919
1920         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1921             continue;
1922
1923         do_subtitle_out(output_files[ost->file_index].ctx, ost, ist, &subtitle, pkt->pts);
1924     }
1925
1926     avsubtitle_free(&subtitle);
1927     return ret;
1928 }
1929
1930 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1931 static int output_packet(InputStream *ist,
1932                          OutputStream *ost_table, int nb_ostreams,
1933                          const AVPacket *pkt)
1934 {
1935     int i;
1936     int got_output;
1937     int64_t pkt_pts = AV_NOPTS_VALUE;
1938     AVPacket avpkt;
1939
1940     if (ist->next_pts == AV_NOPTS_VALUE)
1941         ist->next_pts = ist->pts;
1942
1943     if (pkt == NULL) {
1944         /* EOF handling */
1945         av_init_packet(&avpkt);
1946         avpkt.data = NULL;
1947         avpkt.size = 0;
1948         goto handle_eof;
1949     } else {
1950         avpkt = *pkt;
1951     }
1952
1953     if(pkt->dts != AV_NOPTS_VALUE)
1954         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1955     if(pkt->pts != AV_NOPTS_VALUE)
1956         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1957
1958     //while we have more to decode or while the decoder did output something on EOF
1959     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1960         int ret = 0;
1961     handle_eof:
1962
1963         ist->pts = ist->next_pts;
1964
1965         if (avpkt.size && avpkt.size != pkt->size) {
1966             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1967                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1968             ist->showed_multi_packet_warning = 1;
1969         }
1970
1971         switch(ist->st->codec->codec_type) {
1972         case AVMEDIA_TYPE_AUDIO:
1973             ret = transcode_audio    (ist, &avpkt, &got_output);
1974             break;
1975         case AVMEDIA_TYPE_VIDEO:
1976             ret = transcode_video    (ist, &avpkt, &got_output, &pkt_pts);
1977             break;
1978         case AVMEDIA_TYPE_SUBTITLE:
1979             ret = transcode_subtitles(ist, &avpkt, &got_output);
1980             break;
1981         default:
1982             return -1;
1983         }
1984
1985         if (ret < 0)
1986             return ret;
1987         // touch data and size only if not EOF
1988         if (pkt) {
1989             avpkt.data += ret;
1990             avpkt.size -= ret;
1991         }
1992         if (!got_output) {
1993             continue;
1994         }
1995     }
1996
1997     /* handle stream copy */
1998     if (!ist->decoding_needed) {
1999         rate_emu_sleep(ist);
2000         ist->pts = ist->next_pts;
2001         switch (ist->st->codec->codec_type) {
2002         case AVMEDIA_TYPE_AUDIO:
2003             ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2004                              ist->st->codec->sample_rate;
2005             break;
2006         case AVMEDIA_TYPE_VIDEO:
2007             if (ist->st->codec->time_base.num != 0) {
2008                 int ticks = ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2009                 ist->next_pts += ((int64_t)AV_TIME_BASE *
2010                                   ist->st->codec->time_base.num * ticks) /
2011                                   ist->st->codec->time_base.den;
2012             }
2013             break;
2014         }
2015     }
2016     for (i = 0; pkt && i < nb_ostreams; i++) {
2017         OutputStream *ost = &ost_table[i];
2018
2019         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2020             continue;
2021
2022         do_streamcopy(ist, ost, pkt);
2023     }
2024
2025     return 0;
2026 }
2027
2028 static void print_sdp(OutputFile *output_files, int n)
2029 {
2030     char sdp[2048];
2031     int i;
2032     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
2033
2034     if (!avc)
2035         exit_program(1);
2036     for (i = 0; i < n; i++)
2037         avc[i] = output_files[i].ctx;
2038
2039     av_sdp_create(avc, n, sdp, sizeof(sdp));
2040     printf("SDP:\n%s\n", sdp);
2041     fflush(stdout);
2042     av_freep(&avc);
2043 }
2044
2045 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
2046                              char *error, int error_len)
2047 {
2048     int i;
2049     InputStream *ist = &input_streams[ist_index];
2050     if (ist->decoding_needed) {
2051         AVCodec *codec = ist->dec;
2052         if (!codec) {
2053             snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d:%d",
2054                     ist->st->codec->codec_id, ist->file_index, ist->st->index);
2055             return AVERROR(EINVAL);
2056         }
2057
2058         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2059             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2060                     ist->file_index, ist->st->index);
2061             return AVERROR(EINVAL);
2062         }
2063         assert_codec_experimental(ist->st->codec, 0);
2064         assert_avoptions(ist->opts);
2065     }
2066
2067     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;
2068     ist->next_pts = AV_NOPTS_VALUE;
2069     ist->is_start = 1;
2070
2071     return 0;
2072 }
2073
2074 static int transcode_init(OutputFile *output_files,
2075                           int nb_output_files,
2076                           InputFile *input_files,
2077                           int nb_input_files)
2078 {
2079     int ret = 0, i, j, k;
2080     AVFormatContext *oc;
2081     AVCodecContext *codec, *icodec;
2082     OutputStream *ost;
2083     InputStream *ist;
2084     char error[1024];
2085     int want_sdp = 1;
2086
2087     /* init framerate emulation */
2088     for (i = 0; i < nb_input_files; i++) {
2089         InputFile *ifile = &input_files[i];
2090         if (ifile->rate_emu)
2091             for (j = 0; j < ifile->nb_streams; j++)
2092                 input_streams[j + ifile->ist_index].start = av_gettime();
2093     }
2094
2095     /* output stream init */
2096     for (i = 0; i < nb_output_files; i++) {
2097         oc = output_files[i].ctx;
2098         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2099             av_dump_format(oc, i, oc->filename, 1);
2100             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2101             return AVERROR(EINVAL);
2102         }
2103     }
2104
2105     /* for each output stream, we compute the right encoding parameters */
2106     for (i = 0; i < nb_output_streams; i++) {
2107         ost = &output_streams[i];
2108         oc  = output_files[ost->file_index].ctx;
2109         ist = &input_streams[ost->source_index];
2110
2111         if (ost->attachment_filename)
2112             continue;
2113
2114         codec  = ost->st->codec;
2115         icodec = ist->st->codec;
2116
2117         ost->st->disposition          = ist->st->disposition;
2118         codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2119         codec->chroma_sample_location = icodec->chroma_sample_location;
2120
2121         if (ost->stream_copy) {
2122             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2123
2124             if (extra_size > INT_MAX) {
2125                 return AVERROR(EINVAL);
2126             }
2127
2128             /* if stream_copy is selected, no need to decode or encode */
2129             codec->codec_id   = icodec->codec_id;
2130             codec->codec_type = icodec->codec_type;
2131
2132             if (!codec->codec_tag) {
2133                 if (!oc->oformat->codec_tag ||
2134                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2135                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2136                     codec->codec_tag = icodec->codec_tag;
2137             }
2138
2139             codec->bit_rate       = icodec->bit_rate;
2140             codec->rc_max_rate    = icodec->rc_max_rate;
2141             codec->rc_buffer_size = icodec->rc_buffer_size;
2142             codec->field_order    = icodec->field_order;
2143             codec->extradata      = av_mallocz(extra_size);
2144             if (!codec->extradata) {
2145                 return AVERROR(ENOMEM);
2146             }
2147             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2148
2149             codec->extradata_size = icodec->extradata_size;
2150             if (!copy_tb) {
2151                 codec->time_base      = icodec->time_base;
2152                 codec->time_base.num *= icodec->ticks_per_frame;
2153                 av_reduce(&codec->time_base.num, &codec->time_base.den,
2154                           codec->time_base.num, codec->time_base.den, INT_MAX);
2155             } else
2156                 codec->time_base = ist->st->time_base;
2157
2158             switch(codec->codec_type) {
2159             case AVMEDIA_TYPE_AUDIO:
2160                 if(audio_volume != 256) {
2161                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2162                     exit_program(1);
2163                 }
2164                 codec->channel_layout     = icodec->channel_layout;
2165                 codec->sample_rate        = icodec->sample_rate;
2166                 codec->channels           = icodec->channels;
2167                 codec->frame_size         = icodec->frame_size;
2168                 codec->audio_service_type = icodec->audio_service_type;
2169                 codec->block_align        = icodec->block_align;
2170                 break;
2171             case AVMEDIA_TYPE_VIDEO:
2172                 codec->pix_fmt            = icodec->pix_fmt;
2173                 codec->width              = icodec->width;
2174                 codec->height             = icodec->height;
2175                 codec->has_b_frames       = icodec->has_b_frames;
2176                 if (!codec->sample_aspect_ratio.num) {
2177                     codec->sample_aspect_ratio   =
2178                     ost->st->sample_aspect_ratio =
2179                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2180                         ist->st->codec->sample_aspect_ratio.num ?
2181                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2182                 }
2183                 break;
2184             case AVMEDIA_TYPE_SUBTITLE:
2185                 codec->width  = icodec->width;
2186                 codec->height = icodec->height;
2187                 break;
2188             case AVMEDIA_TYPE_DATA:
2189             case AVMEDIA_TYPE_ATTACHMENT:
2190                 break;
2191             default:
2192                 abort();
2193             }
2194         } else {
2195             if (!ost->enc)
2196                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2197
2198             ist->decoding_needed = 1;
2199             ost->encoding_needed = 1;
2200
2201             switch(codec->codec_type) {
2202             case AVMEDIA_TYPE_AUDIO:
2203                 ost->fifo = av_fifo_alloc(1024);
2204                 if (!ost->fifo) {
2205                     return AVERROR(ENOMEM);
2206                 }
2207                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2208
2209                 if (!codec->sample_rate)
2210                     codec->sample_rate = icodec->sample_rate;
2211                 choose_sample_rate(ost->st, ost->enc);
2212                 codec->time_base = (AVRational){1, codec->sample_rate};
2213
2214                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2215                     codec->sample_fmt = icodec->sample_fmt;
2216                 choose_sample_fmt(ost->st, ost->enc);
2217
2218                 if (!codec->channels) {
2219                     codec->channels = icodec->channels;
2220                     codec->channel_layout = icodec->channel_layout;
2221                 }
2222                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2223                     codec->channel_layout = 0;
2224
2225                 ost->audio_resample       = codec-> sample_rate != icodec->sample_rate || audio_sync_method > 1;
2226                 icodec->request_channels  = codec-> channels;
2227                 ost->resample_sample_fmt  = icodec->sample_fmt;
2228                 ost->resample_sample_rate = icodec->sample_rate;
2229                 ost->resample_channels    = icodec->channels;
2230                 break;
2231             case AVMEDIA_TYPE_VIDEO:
2232                 if (codec->pix_fmt == PIX_FMT_NONE)
2233                     codec->pix_fmt = icodec->pix_fmt;
2234                 choose_pixel_fmt(ost->st, ost->enc);
2235
2236                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2237                     av_log(NULL, AV_LOG_FATAL, "Video pixel format is unknown, stream cannot be encoded\n");
2238                     exit_program(1);
2239                 }
2240
2241                 if (!codec->width || !codec->height) {
2242                     codec->width  = icodec->width;
2243                     codec->height = icodec->height;
2244                 }
2245
2246                 ost->video_resample = codec->width   != icodec->width  ||
2247                                       codec->height  != icodec->height ||
2248                                       codec->pix_fmt != icodec->pix_fmt;
2249                 if (ost->video_resample) {
2250                     codec->bits_per_raw_sample= frame_bits_per_raw_sample;
2251                 }
2252
2253                 ost->resample_height  = icodec->height;
2254                 ost->resample_width   = icodec->width;
2255                 ost->resample_pix_fmt = icodec->pix_fmt;
2256
2257                 if (!ost->frame_rate.num)
2258                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2259                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2260                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2261                     ost->frame_rate = ost->enc->supported_framerates[idx];
2262                 }
2263                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2264                 if(   av_q2d(codec->time_base) < 0.001 && video_sync_method
2265                    && (video_sync_method==1 || (video_sync_method<0 && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2266                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not effciciently supporting it.\n"
2267                                                "Please consider specifiying a lower framerate, a different muxer or -vsync 2\n");
2268                 }
2269
2270 #if CONFIG_AVFILTER
2271                 if (configure_video_filters(ist, ost)) {
2272                     av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2273                     exit(1);
2274                 }
2275 #endif
2276                 break;
2277             case AVMEDIA_TYPE_SUBTITLE:
2278                 break;
2279             default:
2280                 abort();
2281                 break;
2282             }
2283             /* two pass mode */
2284             if (codec->codec_id != CODEC_ID_H264 &&
2285                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2286                 char logfilename[1024];
2287                 FILE *f;
2288
2289                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2290                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2291                          i);
2292                 if (codec->flags & CODEC_FLAG_PASS1) {
2293                     f = fopen(logfilename, "wb");
2294                     if (!f) {
2295                         av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2296                                logfilename, strerror(errno));
2297                         exit_program(1);
2298                     }
2299                     ost->logfile = f;
2300                 } else {
2301                     char  *logbuffer;
2302                     size_t logbuffer_size;
2303                     if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2304                         av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2305                                logfilename);
2306                         exit_program(1);
2307                     }
2308                     codec->stats_in = logbuffer;
2309                 }
2310             }
2311         }
2312         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2313             /* maximum video buffer size is 6-bytes per pixel, plus DPX header size */
2314             int        size = codec->width * codec->height;
2315             bit_buffer_size = FFMAX(bit_buffer_size, 6*size + 1664);
2316         }
2317     }
2318
2319     if (!bit_buffer)
2320         bit_buffer = av_malloc(bit_buffer_size);
2321     if (!bit_buffer) {
2322         av_log(NULL, AV_LOG_ERROR, "Cannot allocate %d bytes output buffer\n",
2323                bit_buffer_size);
2324         return AVERROR(ENOMEM);
2325     }
2326
2327     /* open each encoder */
2328     for (i = 0; i < nb_output_streams; i++) {
2329         ost = &output_streams[i];
2330         if (ost->encoding_needed) {
2331             AVCodec      *codec = ost->enc;
2332             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2333             if (!codec) {
2334                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d:%d",
2335                          ost->st->codec->codec_id, ost->file_index, ost->index);
2336                 ret = AVERROR(EINVAL);
2337                 goto dump_format;
2338             }
2339             if (dec->subtitle_header) {
2340                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2341                 if (!ost->st->codec->subtitle_header) {
2342                     ret = AVERROR(ENOMEM);
2343                     goto dump_format;
2344                 }
2345                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2346                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2347             }
2348             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2349                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2350                         ost->file_index, ost->index);
2351                 ret = AVERROR(EINVAL);
2352                 goto dump_format;
2353             }
2354             assert_codec_experimental(ost->st->codec, 1);
2355             assert_avoptions(ost->opts);
2356             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2357                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2358                                              "It takes bits/s as argument, not kbits/s\n");
2359             extra_size += ost->st->codec->extradata_size;
2360
2361             if (ost->st->codec->me_threshold)
2362                 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2363         }
2364     }
2365
2366     /* init input streams */
2367     for (i = 0; i < nb_input_streams; i++)
2368         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2369             goto dump_format;
2370
2371     /* discard unused programs */
2372     for (i = 0; i < nb_input_files; i++) {
2373         InputFile *ifile = &input_files[i];
2374         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2375             AVProgram *p = ifile->ctx->programs[j];
2376             int discard  = AVDISCARD_ALL;
2377
2378             for (k = 0; k < p->nb_stream_indexes; k++)
2379                 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2380                     discard = AVDISCARD_DEFAULT;
2381                     break;
2382                 }
2383             p->discard = discard;
2384         }
2385     }
2386
2387     /* open files and write file headers */
2388     for (i = 0; i < nb_output_files; i++) {
2389         oc = output_files[i].ctx;
2390         oc->interrupt_callback = int_cb;
2391         if (avformat_write_header(oc, &output_files[i].opts) < 0) {
2392             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2393             ret = AVERROR(EINVAL);
2394             goto dump_format;
2395         }
2396 //        assert_avoptions(output_files[i].opts);
2397         if (strcmp(oc->oformat->name, "rtp")) {
2398             want_sdp = 0;
2399         }
2400     }
2401
2402  dump_format:
2403     /* dump the file output parameters - cannot be done before in case
2404        of stream copy */
2405     for (i = 0; i < nb_output_files; i++) {
2406         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2407     }
2408
2409     /* dump the stream mapping */
2410     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2411     for (i = 0; i < nb_output_streams; i++) {
2412         ost = &output_streams[i];
2413
2414         if (ost->attachment_filename) {
2415             /* an attached file */
2416             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2417                    ost->attachment_filename, ost->file_index, ost->index);
2418             continue;
2419         }
2420         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2421                input_streams[ost->source_index].file_index,
2422                input_streams[ost->source_index].st->index,
2423                ost->file_index,
2424                ost->index);
2425         if (ost->sync_ist != &input_streams[ost->source_index])
2426             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2427                    ost->sync_ist->file_index,
2428                    ost->sync_ist->st->index);
2429         if (ost->stream_copy)
2430             av_log(NULL, AV_LOG_INFO, " (copy)");
2431         else
2432             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
2433                    input_streams[ost->source_index].dec->name : "?",
2434                    ost->enc ? ost->enc->name : "?");
2435         av_log(NULL, AV_LOG_INFO, "\n");
2436     }
2437
2438     if (ret) {
2439         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2440         return ret;
2441     }
2442
2443     if (want_sdp) {
2444         print_sdp(output_files, nb_output_files);
2445     }
2446
2447     return 0;
2448 }
2449
2450 /*
2451  * The following code is the main loop of the file converter
2452  */
2453 static int transcode(OutputFile *output_files,
2454                      int nb_output_files,
2455                      InputFile *input_files,
2456                      int nb_input_files)
2457 {
2458     int ret, i;
2459     AVFormatContext *is, *os;
2460     OutputStream *ost;
2461     InputStream *ist;
2462     uint8_t *no_packet;
2463     int no_packet_count=0;
2464     int64_t timer_start;
2465     int key;
2466
2467     if (!(no_packet = av_mallocz(nb_input_files)))
2468         exit_program(1);
2469
2470     ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2471     if (ret < 0)
2472         goto fail;
2473
2474     if (!using_stdin) {
2475         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
2476         avio_set_interrupt_cb(decode_interrupt_cb);
2477     }
2478     term_init();
2479
2480     timer_start = av_gettime();
2481
2482     for(; received_sigterm == 0;) {
2483         int file_index, ist_index;
2484         AVPacket pkt;
2485         int64_t ipts_min;
2486         double opts_min;
2487
2488         ipts_min = INT64_MAX;
2489         opts_min= 1e100;
2490         /* if 'q' pressed, exits */
2491         if (!using_stdin) {
2492             if (q_pressed)
2493                 break;
2494             /* read_key() returns 0 on EOF */
2495             key = read_key();
2496             if (key == 'q')
2497                 break;
2498             if (key == '+') av_log_set_level(av_log_get_level()+10);
2499             if (key == '-') av_log_set_level(av_log_get_level()-10);
2500             if (key == 's') qp_hist     ^= 1;
2501             if (key == 'h'){
2502                 if (do_hex_dump){
2503                     do_hex_dump = do_pkt_dump = 0;
2504                 } else if(do_pkt_dump){
2505                     do_hex_dump = 1;
2506                 } else
2507                     do_pkt_dump = 1;
2508                 av_log_set_level(AV_LOG_DEBUG);
2509             }
2510             if (key == 'd' || key == 'D'){
2511                 int debug=0;
2512                 if(key == 'D') {
2513                     debug = input_streams[0].st->codec->debug<<1;
2514                     if(!debug) debug = 1;
2515                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2516                         debug += debug;
2517                 }else
2518                     scanf("%d", &debug);
2519                 for(i=0;i<nb_input_streams;i++) {
2520                     input_streams[i].st->codec->debug = debug;
2521                 }
2522                 for(i=0;i<nb_output_streams;i++) {
2523                     ost = &output_streams[i];
2524                     ost->st->codec->debug = debug;
2525                 }
2526                 if(debug) av_log_set_level(AV_LOG_DEBUG);
2527                 fprintf(stderr,"debug=%d\n", debug);
2528             }
2529             if (key == '?'){
2530                 fprintf(stderr, "key    function\n"
2531                                 "?      show this help\n"
2532                                 "+      increase verbosity\n"
2533                                 "-      decrease verbosity\n"
2534                                 "D      cycle through available debug modes\n"
2535                                 "h      dump packets/hex press to cycle through the 3 states\n"
2536                                 "q      quit\n"
2537                                 "s      Show QP histogram\n"
2538                 );
2539             }
2540         }
2541
2542         /* select the stream that we must read now by looking at the
2543            smallest output pts */
2544         file_index = -1;
2545         for (i = 0; i < nb_output_streams; i++) {
2546             OutputFile *of;
2547             int64_t ipts;
2548             double  opts;
2549             ost = &output_streams[i];
2550             of = &output_files[ost->file_index];
2551             os = output_files[ost->file_index].ctx;
2552             ist = &input_streams[ost->source_index];
2553             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2554                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2555                 continue;
2556             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2557             ipts = ist->pts;
2558             if (!input_files[ist->file_index].eof_reached){
2559                 if(ipts < ipts_min) {
2560                     ipts_min = ipts;
2561                     if(input_sync ) file_index = ist->file_index;
2562                 }
2563                 if(opts < opts_min) {
2564                     opts_min = opts;
2565                     if(!input_sync) file_index = ist->file_index;
2566                 }
2567             }
2568             if (ost->frame_number >= ost->max_frames) {
2569                 int j;
2570                 for (j = 0; j < of->ctx->nb_streams; j++)
2571                     output_streams[of->ost_index + j].is_past_recording_time = 1;
2572                 continue;
2573             }
2574         }
2575         /* if none, if is finished */
2576         if (file_index < 0) {
2577             if(no_packet_count){
2578                 no_packet_count=0;
2579                 memset(no_packet, 0, nb_input_files);
2580                 usleep(10000);
2581                 continue;
2582             }
2583             break;
2584         }
2585
2586         /* read a frame from it and output it in the fifo */
2587         is = input_files[file_index].ctx;
2588         ret= av_read_frame(is, &pkt);
2589         if(ret == AVERROR(EAGAIN)){
2590             no_packet[file_index]=1;
2591             no_packet_count++;
2592             continue;
2593         }
2594         if (ret < 0) {
2595             input_files[file_index].eof_reached = 1;
2596             if (opt_shortest)
2597                 break;
2598             else
2599                 continue;
2600         }
2601
2602         no_packet_count=0;
2603         memset(no_packet, 0, nb_input_files);
2604
2605         if (do_pkt_dump) {
2606             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2607                              is->streams[pkt.stream_index]);
2608         }
2609         /* the following test is needed in case new streams appear
2610            dynamically in stream : we ignore them */
2611         if (pkt.stream_index >= input_files[file_index].nb_streams)
2612             goto discard_packet;
2613         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2614         ist = &input_streams[ist_index];
2615         if (ist->discard)
2616             goto discard_packet;
2617
2618         if (pkt.dts != AV_NOPTS_VALUE)
2619             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2620         if (pkt.pts != AV_NOPTS_VALUE)
2621             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2622
2623         if(pkt.pts != AV_NOPTS_VALUE)
2624             pkt.pts *= ist->ts_scale;
2625         if(pkt.dts != AV_NOPTS_VALUE)
2626             pkt.dts *= ist->ts_scale;
2627
2628 //        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);
2629         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2630             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2631             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2632             int64_t delta= pkt_dts - ist->next_pts;
2633             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2634                 input_files[ist->file_index].ts_offset -= delta;
2635                 av_log(NULL, AV_LOG_DEBUG, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2636                        delta, input_files[ist->file_index].ts_offset);
2637                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2638                 if(pkt.pts != AV_NOPTS_VALUE)
2639                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2640             }
2641         }
2642
2643         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2644         if (output_packet(ist, output_streams, nb_output_streams, &pkt) < 0) {
2645
2646             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
2647                    ist->file_index, ist->st->index);
2648             if (exit_on_error)
2649                 exit_program(1);
2650             av_free_packet(&pkt);
2651             continue;
2652         }
2653
2654     discard_packet:
2655         av_free_packet(&pkt);
2656
2657         /* dump report by using the output first video and audio streams */
2658         print_report(output_files, output_streams, nb_output_streams, 0, timer_start);
2659     }
2660
2661     /* at the end of stream, we must flush the decoder buffers */
2662     for (i = 0; i < nb_input_streams; i++) {
2663         ist = &input_streams[i];
2664         if (ist->decoding_needed) {
2665             output_packet(ist, output_streams, nb_output_streams, NULL);
2666         }
2667     }
2668     flush_encoders(output_streams, nb_output_streams);
2669
2670     term_exit();
2671
2672     /* write the trailer if needed and close file */
2673     for(i=0;i<nb_output_files;i++) {
2674         os = output_files[i].ctx;
2675         av_write_trailer(os);
2676     }
2677
2678     /* dump report by using the first video and audio streams */
2679     print_report(output_files, output_streams, nb_output_streams, 1, timer_start);
2680
2681     /* close each encoder */
2682     for (i = 0; i < nb_output_streams; i++) {
2683         ost = &output_streams[i];
2684         if (ost->encoding_needed) {
2685             av_freep(&ost->st->codec->stats_in);
2686             avcodec_close(ost->st->codec);
2687         }
2688 #if CONFIG_AVFILTER
2689         avfilter_graph_free(&ost->graph);
2690 #endif
2691     }
2692
2693     /* close each decoder */
2694     for (i = 0; i < nb_input_streams; i++) {
2695         ist = &input_streams[i];
2696         if (ist->decoding_needed) {
2697             avcodec_close(ist->st->codec);
2698         }
2699     }
2700
2701     /* finished ! */
2702     ret = 0;
2703
2704  fail:
2705     av_freep(&bit_buffer);
2706     av_freep(&no_packet);
2707
2708     if (output_streams) {
2709         for (i = 0; i < nb_output_streams; i++) {
2710             ost = &output_streams[i];
2711             if (ost) {
2712                 if (ost->stream_copy)
2713                     av_freep(&ost->st->codec->extradata);
2714                 if (ost->logfile) {
2715                     fclose(ost->logfile);
2716                     ost->logfile = NULL;
2717                 }
2718                 av_fifo_free(ost->fifo); /* works even if fifo is not
2719                                              initialized but set to zero */
2720                 av_freep(&ost->st->codec->subtitle_header);
2721                 av_free(ost->resample_frame.data[0]);
2722                 av_free(ost->forced_kf_pts);
2723                 if (ost->video_resample)
2724                     sws_freeContext(ost->img_resample_ctx);
2725                 if (ost->resample)
2726                     audio_resample_close(ost->resample);
2727                 if (ost->reformat_ctx)
2728                     av_audio_convert_free(ost->reformat_ctx);
2729                 av_dict_free(&ost->opts);
2730             }
2731         }
2732     }
2733     return ret;
2734 }
2735
2736 static double parse_frame_aspect_ratio(const char *arg)
2737 {
2738     int x = 0, y = 0;
2739     double ar = 0;
2740     const char *p;
2741     char *end;
2742
2743     p = strchr(arg, ':');
2744     if (p) {
2745         x = strtol(arg, &end, 10);
2746         if (end == p)
2747             y = strtol(end+1, &end, 10);
2748         if (x > 0 && y > 0)
2749             ar = (double)x / (double)y;
2750     } else
2751         ar = strtod(arg, NULL);
2752
2753     if (!ar) {
2754         av_log(NULL, AV_LOG_FATAL, "Incorrect aspect ratio specification.\n");
2755         exit_program(1);
2756     }
2757     return ar;
2758 }
2759
2760 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2761 {
2762     return parse_option(o, "codec:a", arg, options);
2763 }
2764
2765 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2766 {
2767     return parse_option(o, "codec:v", arg, options);
2768 }
2769
2770 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2771 {
2772     return parse_option(o, "codec:s", arg, options);
2773 }
2774
2775 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2776 {
2777     return parse_option(o, "codec:d", arg, options);
2778 }
2779
2780 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2781 {
2782     StreamMap *m = NULL;
2783     int i, negative = 0, file_idx;
2784     int sync_file_idx = -1, sync_stream_idx;
2785     char *p, *sync;
2786     char *map;
2787
2788     if (*arg == '-') {
2789         negative = 1;
2790         arg++;
2791     }
2792     map = av_strdup(arg);
2793
2794     /* parse sync stream first, just pick first matching stream */
2795     if (sync = strchr(map, ',')) {
2796         *sync = 0;
2797         sync_file_idx = strtol(sync + 1, &sync, 0);
2798         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2799             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
2800             exit_program(1);
2801         }
2802         if (*sync)
2803             sync++;
2804         for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2805             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2806                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2807                 sync_stream_idx = i;
2808                 break;
2809             }
2810         if (i == input_files[sync_file_idx].nb_streams) {
2811             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
2812                                        "match any streams.\n", arg);
2813             exit_program(1);
2814         }
2815     }
2816
2817
2818     file_idx = strtol(map, &p, 0);
2819     if (file_idx >= nb_input_files || file_idx < 0) {
2820         av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
2821         exit_program(1);
2822     }
2823     if (negative)
2824         /* disable some already defined maps */
2825         for (i = 0; i < o->nb_stream_maps; i++) {
2826             m = &o->stream_maps[i];
2827             if (file_idx == m->file_index &&
2828                 check_stream_specifier(input_files[m->file_index].ctx,
2829                                        input_files[m->file_index].ctx->streams[m->stream_index],
2830                                        *p == ':' ? p + 1 : p) > 0)
2831                 m->disabled = 1;
2832         }
2833     else
2834         for (i = 0; i < input_files[file_idx].nb_streams; i++) {
2835             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2836                         *p == ':' ? p + 1 : p) <= 0)
2837                 continue;
2838             o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
2839                                         &o->nb_stream_maps, o->nb_stream_maps + 1);
2840             m = &o->stream_maps[o->nb_stream_maps - 1];
2841
2842             m->file_index   = file_idx;
2843             m->stream_index = i;
2844
2845             if (sync_file_idx >= 0) {
2846                 m->sync_file_index   = sync_file_idx;
2847                 m->sync_stream_index = sync_stream_idx;
2848             } else {
2849                 m->sync_file_index   = file_idx;
2850                 m->sync_stream_index = i;
2851             }
2852         }
2853
2854     if (!m) {
2855         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
2856         exit_program(1);
2857     }
2858
2859     av_freep(&map);
2860     return 0;
2861 }
2862
2863 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
2864 {
2865     o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
2866                                 &o->nb_attachments, o->nb_attachments + 1);
2867     o->attachments[o->nb_attachments - 1] = arg;
2868     return 0;
2869 }
2870
2871 /**
2872  * Parse a metadata specifier in arg.
2873  * @param type metadata type is written here -- g(lobal)/s(tream)/c(hapter)/p(rogram)
2874  * @param index for type c/p, chapter/program index is written here
2875  * @param stream_spec for type s, the stream specifier is written here
2876  */
2877 static void parse_meta_type(char *arg, char *type, int *index, const char **stream_spec)
2878 {
2879     if (*arg) {
2880         *type = *arg;
2881         switch (*arg) {
2882         case 'g':
2883             break;
2884         case 's':
2885             if (*(++arg) && *arg != ':') {
2886                 av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", arg);
2887                 exit_program(1);
2888             }
2889             *stream_spec = *arg == ':' ? arg + 1 : "";
2890             break;
2891         case 'c':
2892         case 'p':
2893             if (*(++arg) == ':')
2894                 *index = strtol(++arg, NULL, 0);
2895             break;
2896         default:
2897             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
2898             exit_program(1);
2899         }
2900     } else
2901         *type = 'g';
2902 }
2903
2904 static int copy_metadata(char *outspec, char *inspec, AVFormatContext *oc, AVFormatContext *ic, OptionsContext *o)
2905 {
2906     AVDictionary **meta_in = NULL;
2907     AVDictionary **meta_out;
2908     int i, ret = 0;
2909     char type_in, type_out;
2910     const char *istream_spec = NULL, *ostream_spec = NULL;
2911     int idx_in = 0, idx_out = 0;
2912
2913     parse_meta_type(inspec,  &type_in,  &idx_in,  &istream_spec);
2914     parse_meta_type(outspec, &type_out, &idx_out, &ostream_spec);
2915
2916     if (type_in == 'g' || type_out == 'g')
2917         o->metadata_global_manual = 1;
2918     if (type_in == 's' || type_out == 's')
2919         o->metadata_streams_manual = 1;
2920     if (type_in == 'c' || type_out == 'c')
2921         o->metadata_chapters_manual = 1;
2922
2923 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
2924     if ((index) < 0 || (index) >= (nb_elems)) {\
2925         av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps.\n",\
2926                 (desc), (index));\
2927         exit_program(1);\
2928     }
2929
2930 #define SET_DICT(type, meta, context, index)\
2931         switch (type) {\
2932         case 'g':\
2933             meta = &context->metadata;\
2934             break;\
2935         case 'c':\
2936             METADATA_CHECK_INDEX(index, context->nb_chapters, "chapter")\
2937             meta = &context->chapters[index]->metadata;\
2938             break;\
2939         case 'p':\
2940             METADATA_CHECK_INDEX(index, context->nb_programs, "program")\
2941             meta = &context->programs[index]->metadata;\
2942             break;\
2943         }\
2944
2945     SET_DICT(type_in, meta_in, ic, idx_in);
2946     SET_DICT(type_out, meta_out, oc, idx_out);
2947
2948     /* for input streams choose first matching stream */
2949     if (type_in == 's') {
2950         for (i = 0; i < ic->nb_streams; i++) {
2951             if ((ret = check_stream_specifier(ic, ic->streams[i], istream_spec)) > 0) {
2952                 meta_in = &ic->streams[i]->metadata;
2953                 break;
2954             } else if (ret < 0)
2955                 exit_program(1);
2956         }
2957         if (!meta_in) {
2958             av_log(NULL, AV_LOG_FATAL, "Stream specifier %s does not match  any streams.\n", istream_spec);
2959             exit_program(1);
2960         }
2961     }
2962
2963     if (type_out == 's') {
2964         for (i = 0; i < oc->nb_streams; i++) {
2965             if ((ret = check_stream_specifier(oc, oc->streams[i], ostream_spec)) > 0) {
2966                 meta_out = &oc->streams[i]->metadata;
2967                 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
2968             } else if (ret < 0)
2969                 exit_program(1);
2970         }
2971     } else
2972         av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
2973
2974     return 0;
2975 }
2976
2977 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
2978 {
2979     const char *codec_string = encoder ? "encoder" : "decoder";
2980     AVCodec *codec;
2981
2982     codec = encoder ?
2983         avcodec_find_encoder_by_name(name) :
2984         avcodec_find_decoder_by_name(name);
2985     if(!codec) {
2986         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
2987         exit_program(1);
2988     }
2989     if(codec->type != type) {
2990         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
2991         exit_program(1);
2992     }
2993     return codec;
2994 }
2995
2996 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
2997 {
2998     char *codec_name = NULL;
2999
3000     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
3001     if (codec_name) {
3002         AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
3003         st->codec->codec_id = codec->id;
3004         return codec;
3005     } else
3006         return avcodec_find_decoder(st->codec->codec_id);
3007 }
3008
3009 /**
3010  * Add all the streams from the given input file to the global
3011  * list of input streams.
3012  */
3013 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
3014 {
3015     int i, rfps, rfps_base;
3016
3017     for (i = 0; i < ic->nb_streams; i++) {
3018         AVStream *st = ic->streams[i];
3019         AVCodecContext *dec = st->codec;
3020         InputStream *ist;
3021
3022         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3023         ist = &input_streams[nb_input_streams - 1];
3024         ist->st = st;
3025         ist->file_index = nb_input_files;
3026         ist->discard = 1;
3027         ist->opts = filter_codec_opts(codec_opts, choose_decoder(o, ic, st), ic, st);
3028
3029         ist->ts_scale = 1.0;
3030         MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
3031
3032         ist->dec = choose_decoder(o, ic, st);
3033
3034         switch (dec->codec_type) {
3035         case AVMEDIA_TYPE_AUDIO:
3036             if(!ist->dec)
3037                 ist->dec = avcodec_find_decoder(dec->codec_id);
3038             if(o->audio_disable)
3039                 st->discard= AVDISCARD_ALL;
3040             break;
3041         case AVMEDIA_TYPE_VIDEO:
3042             if(!ist->dec)
3043                 ist->dec = avcodec_find_decoder(dec->codec_id);
3044             rfps      = ic->streams[i]->r_frame_rate.num;
3045             rfps_base = ic->streams[i]->r_frame_rate.den;
3046             if (dec->lowres) {
3047                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3048             }
3049
3050             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3051
3052                 av_log(NULL, AV_LOG_INFO,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3053                        i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3054                        (float)rfps / rfps_base, rfps, rfps_base);
3055             }
3056
3057             if (o->video_disable)
3058                 st->discard= AVDISCARD_ALL;
3059             else if(video_discard)
3060                 st->discard= video_discard;
3061             break;
3062         case AVMEDIA_TYPE_DATA:
3063             break;
3064         case AVMEDIA_TYPE_SUBTITLE:
3065             if(!ist->dec)
3066                 ist->dec = avcodec_find_decoder(dec->codec_id);
3067             if(o->subtitle_disable)
3068                 st->discard = AVDISCARD_ALL;
3069             break;
3070         case AVMEDIA_TYPE_ATTACHMENT:
3071         case AVMEDIA_TYPE_UNKNOWN:
3072             break;
3073         default:
3074             abort();
3075         }
3076     }
3077 }
3078
3079 static void assert_file_overwrite(const char *filename)
3080 {
3081     if ((!file_overwrite || no_file_overwrite) &&
3082         (strchr(filename, ':') == NULL || filename[1] == ':' ||
3083          av_strstart(filename, "file:", NULL))) {
3084         if (avio_check(filename, 0) == 0) {
3085             if (!using_stdin && (!no_file_overwrite || file_overwrite)) {
3086                 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3087                 fflush(stderr);
3088                 if (!read_yesno()) {
3089                     fprintf(stderr, "Not overwriting - exiting\n");
3090                     exit_program(1);
3091                 }
3092             }
3093             else {
3094                 fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
3095                 exit_program(1);
3096             }
3097         }
3098     }
3099 }
3100
3101 static void dump_attachment(AVStream *st, const char *filename)
3102 {
3103     int ret;
3104     AVIOContext *out = NULL;
3105     AVDictionaryEntry *e;
3106
3107     if (!st->codec->extradata_size) {
3108         av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
3109                nb_input_files - 1, st->index);
3110         return;
3111     }
3112     if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
3113         filename = e->value;
3114     if (!*filename) {
3115         av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
3116                "in stream #%d:%d.\n", nb_input_files - 1, st->index);
3117         exit_program(1);
3118     }
3119
3120     assert_file_overwrite(filename);
3121
3122     if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
3123         av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
3124                filename);
3125         exit_program(1);
3126     }
3127
3128     avio_write(out, st->codec->extradata, st->codec->extradata_size);
3129     avio_flush(out);
3130     avio_close(out);
3131 }
3132
3133 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
3134 {
3135     AVFormatContext *ic;
3136     AVInputFormat *file_iformat = NULL;
3137     int err, i, ret;
3138     int64_t timestamp;
3139     uint8_t buf[128];
3140     AVDictionary **opts;
3141     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
3142
3143     if (o->format) {
3144         if (!(file_iformat = av_find_input_format(o->format))) {
3145             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
3146             exit_program(1);
3147         }
3148     }
3149
3150     if (!strcmp(filename, "-"))
3151         filename = "pipe:";
3152
3153     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3154                     !strcmp(filename, "/dev/stdin");
3155
3156     /* get default parameters from command line */
3157     ic = avformat_alloc_context();
3158     if (!ic) {
3159         print_error(filename, AVERROR(ENOMEM));
3160         exit_program(1);
3161     }
3162     if (o->nb_audio_sample_rate) {
3163         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
3164         av_dict_set(&format_opts, "sample_rate", buf, 0);
3165     }
3166     if (o->nb_audio_channels) {
3167         snprintf(buf, sizeof(buf), "%d", o->audio_channels[o->nb_audio_channels - 1].u.i);
3168         av_dict_set(&format_opts, "channels", buf, 0);
3169     }
3170     if (o->nb_frame_rates) {
3171         av_dict_set(&format_opts, "framerate", o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
3172     }
3173     if (o->nb_frame_sizes) {
3174         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
3175     }
3176     if (o->nb_frame_pix_fmts)
3177         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
3178
3179     ic->flags |= AVFMT_FLAG_NONBLOCK;
3180     ic->interrupt_callback = int_cb;
3181
3182     /* open the input file with generic avformat function */
3183     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3184     if (err < 0) {
3185         print_error(filename, err);
3186         exit_program(1);
3187     }
3188     assert_avoptions(format_opts);
3189
3190     /* apply forced codec ids */
3191     for (i = 0; i < ic->nb_streams; i++)
3192         choose_decoder(o, ic, ic->streams[i]);
3193
3194     /* Set AVCodecContext options for avformat_find_stream_info */
3195     opts = setup_find_stream_info_opts(ic, codec_opts);
3196     orig_nb_streams = ic->nb_streams;
3197
3198     /* If not enough info to get the stream parameters, we decode the
3199        first frames to get it. (used in mpeg case for example) */
3200     ret = avformat_find_stream_info(ic, opts);
3201     if (ret < 0) {
3202         av_log(NULL, AV_LOG_FATAL, "%s: could not find codec parameters\n", filename);
3203         avformat_close_input(&ic);
3204         exit_program(1);
3205     }
3206
3207     timestamp = o->start_time;
3208     /* add the stream start time */
3209     if (ic->start_time != AV_NOPTS_VALUE)
3210         timestamp += ic->start_time;
3211
3212     /* if seeking requested, we execute it */
3213     if (o->start_time != 0) {
3214         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3215         if (ret < 0) {
3216             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
3217                    filename, (double)timestamp / AV_TIME_BASE);
3218         }
3219     }
3220
3221     /* update the current parameters so that they match the one of the input stream */
3222     add_input_streams(o, ic);
3223
3224     /* dump the file content */
3225     av_dump_format(ic, nb_input_files, filename, 0);
3226
3227     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3228     input_files[nb_input_files - 1].ctx        = ic;
3229     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3230     input_files[nb_input_files - 1].ts_offset  = o->input_ts_offset - (copy_ts ? 0 : timestamp);
3231     input_files[nb_input_files - 1].nb_streams = ic->nb_streams;
3232     input_files[nb_input_files - 1].rate_emu   = o->rate_emu;
3233
3234     for (i = 0; i < o->nb_dump_attachment; i++) {
3235         int j;
3236
3237         for (j = 0; j < ic->nb_streams; j++) {
3238             AVStream *st = ic->streams[j];
3239
3240             if (check_stream_specifier(ic, st, o->dump_attachment[i].specifier) == 1)
3241                 dump_attachment(st, o->dump_attachment[i].u.str);
3242         }
3243     }
3244
3245     for (i = 0; i < orig_nb_streams; i++)
3246         av_dict_free(&opts[i]);
3247     av_freep(&opts);
3248
3249     reset_options(o);
3250     return 0;
3251 }
3252
3253 static void parse_forced_key_frames(char *kf, OutputStream *ost,
3254                                     AVCodecContext *avctx)
3255 {
3256     char *p;
3257     int n = 1, i;
3258     int64_t t;
3259
3260     for (p = kf; *p; p++)
3261         if (*p == ',')
3262             n++;
3263     ost->forced_kf_count = n;
3264     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
3265     if (!ost->forced_kf_pts) {
3266         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
3267         exit_program(1);
3268     }
3269     for (i = 0; i < n; i++) {
3270         p = i ? strchr(p, ',') + 1 : kf;
3271         t = parse_time_or_die("force_key_frames", p, 1);
3272         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
3273     }
3274 }
3275
3276 static uint8_t *get_line(AVIOContext *s)
3277 {
3278     AVIOContext *line;
3279     uint8_t *buf;
3280     char c;
3281
3282     if (avio_open_dyn_buf(&line) < 0) {
3283         av_log(NULL, AV_LOG_FATAL, "Could not alloc buffer for reading preset.\n");
3284         exit_program(1);
3285     }
3286
3287     while ((c = avio_r8(s)) && c != '\n')
3288         avio_w8(line, c);
3289     avio_w8(line, 0);
3290     avio_close_dyn_buf(line, &buf);
3291
3292     return buf;
3293 }
3294
3295 static int get_preset_file_2(const char *preset_name, const char *codec_name, AVIOContext **s)
3296 {
3297     int i, ret = 1;
3298     char filename[1000];
3299     const char *base[3] = { getenv("AVCONV_DATADIR"),
3300                             getenv("HOME"),
3301                             AVCONV_DATADIR,
3302                             };
3303
3304     for (i = 0; i < FF_ARRAY_ELEMS(base) && ret; i++) {
3305         if (!base[i])
3306             continue;
3307         if (codec_name) {
3308             snprintf(filename, sizeof(filename), "%s%s/%s-%s.avpreset", base[i],
3309                      i != 1 ? "" : "/.avconv", codec_name, preset_name);
3310             ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
3311         }
3312         if (ret) {
3313             snprintf(filename, sizeof(filename), "%s%s/%s.avpreset", base[i],
3314                      i != 1 ? "" : "/.avconv", preset_name);
3315             ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
3316         }
3317     }
3318     return ret;
3319 }
3320
3321 static void choose_encoder(OptionsContext *o, AVFormatContext *s, OutputStream *ost)
3322 {
3323     char *codec_name = NULL;
3324
3325     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, ost->st);
3326     if (!codec_name) {
3327         ost->st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename,
3328                                                   NULL, ost->st->codec->codec_type);
3329         ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
3330     } else if (!strcmp(codec_name, "copy"))
3331         ost->stream_copy = 1;
3332     else {
3333         ost->enc = find_codec_or_die(codec_name, ost->st->codec->codec_type, 1);
3334         ost->st->codec->codec_id = ost->enc->id;
3335     }
3336 }
3337
3338 static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
3339 {
3340     OutputStream *ost;
3341     AVStream *st = avformat_new_stream(oc, NULL);
3342     int idx      = oc->nb_streams - 1, ret = 0;
3343     char *bsf = NULL, *next, *codec_tag = NULL;
3344     AVBitStreamFilterContext *bsfc, *bsfc_prev = NULL;
3345     double qscale = -1;
3346     char *buf = NULL, *arg = NULL, *preset = NULL;
3347     AVIOContext *s = NULL;
3348
3349     if (!st) {
3350         av_log(NULL, AV_LOG_FATAL, "Could not alloc stream.\n");
3351         exit_program(1);
3352     }
3353
3354     if (oc->nb_streams - 1 < o->nb_streamid_map)
3355         st->id = o->streamid_map[oc->nb_streams - 1];
3356
3357     output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
3358                                 nb_output_streams + 1);
3359     ost = &output_streams[nb_output_streams - 1];
3360     ost->file_index = nb_output_files;
3361     ost->index = idx;
3362     ost->st    = st;
3363     st->codec->codec_type = type;
3364     choose_encoder(o, oc, ost);
3365     if (ost->enc) {
3366         ost->opts  = filter_codec_opts(codec_opts, ost->enc, oc, st);
3367     }
3368
3369     avcodec_get_context_defaults3(st->codec, ost->enc);
3370     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
3371
3372     MATCH_PER_STREAM_OPT(presets, str, preset, oc, st);
3373     if (preset && (!(ret = get_preset_file_2(preset, ost->enc->name, &s)))) {
3374         do  {
3375             buf = get_line(s);
3376             if (!buf[0] || buf[0] == '#') {
3377                 av_free(buf);
3378                 continue;
3379             }
3380             if (!(arg = strchr(buf, '='))) {
3381                 av_log(NULL, AV_LOG_FATAL, "Invalid line found in the preset file.\n");
3382                 exit_program(1);
3383             }
3384             *arg++ = 0;
3385             av_dict_set(&ost->opts, buf, arg, AV_DICT_DONT_OVERWRITE);
3386             av_free(buf);
3387         } while (!s->eof_reached);
3388         avio_close(s);
3389     }
3390     if (ret) {
3391         av_log(NULL, AV_LOG_FATAL,
3392                "Preset %s specified for stream %d:%d, but could not be opened.\n",
3393                preset, ost->file_index, ost->index);
3394         exit_program(1);
3395     }
3396
3397     ost->max_frames = INT64_MAX;
3398     MATCH_PER_STREAM_OPT(max_frames, i64, ost->max_frames, oc, st);
3399
3400     MATCH_PER_STREAM_OPT(bitstream_filters, str, bsf, oc, st);
3401     while (bsf) {
3402         if (next = strchr(bsf, ','))
3403             *next++ = 0;
3404         if (!(bsfc = av_bitstream_filter_init(bsf))) {
3405             av_log(NULL, AV_LOG_FATAL, "Unknown bitstream filter %s\n", bsf);
3406             exit_program(1);
3407         }
3408         if (bsfc_prev)
3409             bsfc_prev->next = bsfc;
3410         else
3411             ost->bitstream_filters = bsfc;
3412
3413         bsfc_prev = bsfc;
3414         bsf       = next;
3415     }
3416
3417     MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, oc, st);
3418     if (codec_tag) {
3419         uint32_t tag = strtol(codec_tag, &next, 0);
3420         if (*next)
3421             tag = AV_RL32(codec_tag);
3422         st->codec->codec_tag = tag;
3423     }
3424
3425     MATCH_PER_STREAM_OPT(qscale, dbl, qscale, oc, st);
3426     if (qscale >= 0 || same_quant) {
3427         st->codec->flags |= CODEC_FLAG_QSCALE;
3428         st->codec->global_quality = FF_QP2LAMBDA * qscale;
3429     }
3430
3431     if (oc->oformat->flags & AVFMT_GLOBALHEADER)
3432         st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
3433
3434     av_opt_get_int(sws_opts, "sws_flags", 0, &ost->sws_flags);
3435     return ost;
3436 }
3437
3438 static void parse_matrix_coeffs(uint16_t *dest, const char *str)
3439 {
3440     int i;
3441     const char *p = str;
3442     for(i = 0;; i++) {
3443         dest[i] = atoi(p);
3444         if(i == 63)
3445             break;
3446         p = strchr(p, ',');
3447         if(!p) {
3448             av_log(NULL, AV_LOG_FATAL, "Syntax error in matrix \"%s\" at coeff %d\n", str, i);
3449             exit_program(1);
3450         }
3451         p++;
3452     }
3453 }
3454
3455 static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc)
3456 {
3457     AVStream *st;
3458     OutputStream *ost;
3459     AVCodecContext *video_enc;
3460
3461     ost = new_output_stream(o, oc, AVMEDIA_TYPE_VIDEO);
3462     st  = ost->st;
3463     video_enc = st->codec;
3464
3465     if (!ost->stream_copy) {
3466         const char *p = NULL;
3467         char *forced_key_frames = NULL, *frame_rate = NULL, *frame_size = NULL;
3468         char *frame_aspect_ratio = NULL, *frame_pix_fmt = NULL;
3469         char *intra_matrix = NULL, *inter_matrix = NULL, *filters = NULL;
3470         int i;
3471
3472         MATCH_PER_STREAM_OPT(frame_rates, str, frame_rate, oc, st);
3473         if (frame_rate && av_parse_video_rate(&ost->frame_rate, frame_rate) < 0) {
3474             av_log(NULL, AV_LOG_FATAL, "Invalid framerate value: %s\n", frame_rate);
3475             exit_program(1);
3476         }
3477
3478         MATCH_PER_STREAM_OPT(frame_sizes, str, frame_size, oc, st);
3479         if (frame_size && av_parse_video_size(&video_enc->width, &video_enc->height, frame_size) < 0) {
3480             av_log(NULL, AV_LOG_FATAL, "Invalid frame size: %s.\n", frame_size);
3481             exit_program(1);
3482         }
3483
3484         MATCH_PER_STREAM_OPT(frame_aspect_ratios, str, frame_aspect_ratio, oc, st);
3485         if (frame_aspect_ratio)
3486             ost->frame_aspect_ratio = parse_frame_aspect_ratio(frame_aspect_ratio);
3487
3488         MATCH_PER_STREAM_OPT(frame_pix_fmts, str, frame_pix_fmt, oc, st);
3489         if (frame_pix_fmt && (video_enc->pix_fmt = av_get_pix_fmt(frame_pix_fmt)) == PIX_FMT_NONE) {
3490             av_log(NULL, AV_LOG_FATAL, "Unknown pixel format requested: %s.\n", frame_pix_fmt);
3491             exit_program(1);
3492         }
3493         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3494
3495         MATCH_PER_STREAM_OPT(intra_matrices, str, intra_matrix, oc, st);
3496         if (intra_matrix) {
3497             if (!(video_enc->intra_matrix = av_mallocz(sizeof(*video_enc->intra_matrix) * 64))) {
3498                 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for intra matrix.\n");
3499                 exit_program(1);
3500             }
3501             parse_matrix_coeffs(video_enc->intra_matrix, intra_matrix);
3502         }
3503         MATCH_PER_STREAM_OPT(inter_matrices, str, inter_matrix, oc, st);
3504         if (inter_matrix) {
3505             if (!(video_enc->inter_matrix = av_mallocz(sizeof(*video_enc->inter_matrix) * 64))) {
3506                 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for inter matrix.\n");
3507                 exit_program(1);
3508             }
3509             parse_matrix_coeffs(video_enc->inter_matrix, inter_matrix);
3510         }
3511
3512         MATCH_PER_STREAM_OPT(rc_overrides, str, p, oc, st);
3513         for(i=0; p; i++){
3514             int start, end, q;
3515             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3516             if(e!=3){
3517                 av_log(NULL, AV_LOG_FATAL, "error parsing rc_override\n");
3518                 exit_program(1);
3519             }
3520             video_enc->rc_override=
3521                 av_realloc(video_enc->rc_override,
3522                            sizeof(RcOverride)*(i+1));
3523             video_enc->rc_override[i].start_frame= start;
3524             video_enc->rc_override[i].end_frame  = end;
3525             if(q>0){
3526                 video_enc->rc_override[i].qscale= q;
3527                 video_enc->rc_override[i].quality_factor= 1.0;
3528             }
3529             else{
3530                 video_enc->rc_override[i].qscale= 0;
3531                 video_enc->rc_override[i].quality_factor= -q/100.0;
3532             }
3533             p= strchr(p, '/');
3534             if(p) p++;
3535         }
3536         video_enc->rc_override_count=i;
3537         if (!video_enc->rc_initial_buffer_occupancy)
3538             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3539         video_enc->intra_dc_precision= intra_dc_precision - 8;
3540
3541         /* two pass mode */
3542         if (do_pass) {
3543             if (do_pass == 1) {
3544                 video_enc->flags |= CODEC_FLAG_PASS1;
3545             } else {
3546                 video_enc->flags |= CODEC_FLAG_PASS2;
3547             }
3548         }
3549
3550         MATCH_PER_STREAM_OPT(forced_key_frames, str, forced_key_frames, oc, st);
3551         if (forced_key_frames)
3552             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3553
3554         MATCH_PER_STREAM_OPT(force_fps, i, ost->force_fps, oc, st);
3555
3556         ost->top_field_first = -1;
3557         MATCH_PER_STREAM_OPT(top_field_first, i, ost->top_field_first, oc, st);
3558
3559         MATCH_PER_STREAM_OPT(copy_initial_nonkeyframes, i, ost->copy_initial_nonkeyframes, oc ,st);
3560
3561 #if CONFIG_AVFILTER
3562         MATCH_PER_STREAM_OPT(filters, str, filters, oc, st);
3563         if (filters)
3564             ost->avfilter = av_strdup(filters);
3565 #endif
3566     }
3567
3568     return ost;
3569 }
3570
3571 static OutputStream *new_audio_stream(OptionsContext *o, AVFormatContext *oc)
3572 {
3573     AVStream *st;
3574     OutputStream *ost;
3575     AVCodecContext *audio_enc;
3576
3577     ost = new_output_stream(o, oc, AVMEDIA_TYPE_AUDIO);
3578     st  = ost->st;
3579
3580     audio_enc = st->codec;
3581     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3582
3583     if (!ost->stream_copy) {
3584         char *sample_fmt = NULL;
3585
3586         MATCH_PER_STREAM_OPT(audio_channels, i, audio_enc->channels, oc, st);
3587
3588         MATCH_PER_STREAM_OPT(sample_fmts, str, sample_fmt, oc, st);
3589         if (sample_fmt &&
3590             (audio_enc->sample_fmt = av_get_sample_fmt(sample_fmt)) == AV_SAMPLE_FMT_NONE) {
3591             av_log(NULL, AV_LOG_FATAL, "Invalid sample format '%s'\n", sample_fmt);
3592             exit_program(1);
3593         }
3594
3595         MATCH_PER_STREAM_OPT(audio_sample_rate, i, audio_enc->sample_rate, oc, st);
3596     }
3597
3598     return ost;
3599 }
3600
3601 static OutputStream *new_data_stream(OptionsContext *o, AVFormatContext *oc)
3602 {
3603     OutputStream *ost;
3604
3605     ost = new_output_stream(o, oc, AVMEDIA_TYPE_DATA);
3606     if (!ost->stream_copy) {
3607         av_log(NULL, AV_LOG_FATAL, "Data stream encoding not supported yet (only streamcopy)\n");
3608         exit_program(1);
3609     }
3610
3611     return ost;
3612 }
3613
3614 static OutputStream *new_attachment_stream(OptionsContext *o, AVFormatContext *oc)
3615 {
3616     OutputStream *ost = new_output_stream(o, oc, AVMEDIA_TYPE_ATTACHMENT);
3617     ost->stream_copy = 1;
3618     return ost;
3619 }
3620
3621 static OutputStream *new_subtitle_stream(OptionsContext *o, AVFormatContext *oc)
3622 {
3623     AVStream *st;
3624     OutputStream *ost;
3625     AVCodecContext *subtitle_enc;
3626
3627     ost = new_output_stream(o, oc, AVMEDIA_TYPE_SUBTITLE);
3628     st  = ost->st;
3629     subtitle_enc = st->codec;
3630
3631     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3632
3633     return ost;
3634 }
3635
3636 /* arg format is "output-stream-index:streamid-value". */
3637 static int opt_streamid(OptionsContext *o, const char *opt, const char *arg)
3638 {
3639     int idx;
3640     char *p;
3641     char idx_str[16];
3642
3643     av_strlcpy(idx_str, arg, sizeof(idx_str));
3644     p = strchr(idx_str, ':');
3645     if (!p) {
3646         av_log(NULL, AV_LOG_FATAL,
3647                "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3648                arg, opt);
3649         exit_program(1);
3650     }
3651     *p++ = '\0';
3652     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, MAX_STREAMS-1);
3653     o->streamid_map = grow_array(o->streamid_map, sizeof(*o->streamid_map), &o->nb_streamid_map, idx+1);
3654     o->streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3655     return 0;
3656 }
3657
3658 static int copy_chapters(InputFile *ifile, OutputFile *ofile, int copy_metadata)
3659 {
3660     AVFormatContext *is = ifile->ctx;
3661     AVFormatContext *os = ofile->ctx;
3662     int i;
3663
3664     for (i = 0; i < is->nb_chapters; i++) {
3665         AVChapter *in_ch = is->chapters[i], *out_ch;
3666         int64_t ts_off   = av_rescale_q(ofile->start_time - ifile->ts_offset,
3667                                       AV_TIME_BASE_Q, in_ch->time_base);
3668         int64_t rt       = (ofile->recording_time == INT64_MAX) ? INT64_MAX :
3669                            av_rescale_q(ofile->recording_time, AV_TIME_BASE_Q, in_ch->time_base);
3670
3671
3672         if (in_ch->end < ts_off)
3673             continue;
3674         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
3675             break;
3676
3677         out_ch = av_mallocz(sizeof(AVChapter));
3678         if (!out_ch)
3679             return AVERROR(ENOMEM);
3680
3681         out_ch->id        = in_ch->id;
3682         out_ch->time_base = in_ch->time_base;
3683         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
3684         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
3685
3686         if (copy_metadata)
3687             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
3688
3689         os->nb_chapters++;
3690         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
3691         if (!os->chapters)
3692             return AVERROR(ENOMEM);
3693         os->chapters[os->nb_chapters - 1] = out_ch;
3694     }
3695     return 0;
3696 }
3697
3698 static void opt_output_file(void *optctx, const char *filename)
3699 {
3700     OptionsContext *o = optctx;
3701     AVFormatContext *oc;
3702     int i, err;
3703     AVOutputFormat *file_oformat;
3704     OutputStream *ost;