[ffmdec] Check return value of avio_seek and avoid modifying state if it fails
[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 do_benchmark = 0;
123 static int do_hex_dump = 0;
124 static int do_pkt_dump = 0;
125 static int do_pass = 0;
126 static const char *pass_logfilename_prefix;
127 static int video_sync_method= -1;
128 static int audio_sync_method= 0;
129 static float audio_drift_threshold= 0.1;
130 static int copy_ts= 0;
131 static int copy_tb= 0;
132 static int opt_shortest = 0;
133 static char *vstats_filename;
134 static FILE *vstats_file;
135 static int copy_initial_nonkeyframes = 0;
136
137 static int audio_volume = 256;
138
139 static int exit_on_error = 0;
140 static int using_stdin = 0;
141 static int verbose = 1;
142 static int run_as_daemon  = 0;
143 static int q_pressed = 0;
144 static int64_t video_size = 0;
145 static int64_t audio_size = 0;
146 static int64_t extra_size = 0;
147 static int nb_frames_dup = 0;
148 static int nb_frames_drop = 0;
149 static int input_sync;
150
151 static float dts_delta_threshold = 10;
152
153 static uint8_t *audio_buf;
154 static uint8_t *audio_out;
155 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
156
157 static short *samples;
158
159 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
160
161 typedef struct InputStream {
162     int file_index;
163     AVStream *st;
164     int discard;             /* true if stream data should be discarded */
165     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
166     AVCodec *dec;
167
168     int64_t       start;     /* time when read started */
169     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
170                                 is not defined */
171     int64_t       pts;       /* current pts */
172     double ts_scale;
173     int is_start;            /* is 1 at the start and after a discontinuity */
174     int showed_multi_packet_warning;
175     AVDictionary *opts;
176 } InputStream;
177
178 typedef struct InputFile {
179     AVFormatContext *ctx;
180     int eof_reached;      /* true if eof reached */
181     int ist_index;        /* index of first stream in ist_table */
182     int buffer_size;      /* current total buffer size */
183     int64_t ts_offset;
184     int nb_streams;       /* number of stream that avconv is aware of; may be different
185                              from ctx.nb_streams if new streams appear during av_read_frame() */
186     int rate_emu;
187 } InputFile;
188
189 typedef struct OutputStream {
190     int file_index;          /* file index */
191     int index;               /* stream index in the output file */
192     int source_index;        /* InputStream index */
193     AVStream *st;            /* stream in the output file */
194     int encoding_needed;     /* true if encoding needed for this stream */
195     int frame_number;
196     /* input pts and corresponding output pts
197        for A/V sync */
198     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
199     struct InputStream *sync_ist; /* input stream to sync against */
200     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
201     AVBitStreamFilterContext *bitstream_filters;
202     AVCodec *enc;
203     int64_t max_frames;
204
205     /* video only */
206     int video_resample;
207     AVFrame resample_frame;              /* temporary frame for image resampling */
208     struct SwsContext *img_resample_ctx; /* for image resampling */
209     int resample_height;
210     int resample_width;
211     int resample_pix_fmt;
212     AVRational frame_rate;
213     int force_fps;
214     int top_field_first;
215
216     float frame_aspect_ratio;
217
218     /* forced key frames */
219     int64_t *forced_kf_pts;
220     int forced_kf_count;
221     int forced_kf_index;
222
223     /* audio only */
224     int audio_resample;
225     ReSampleContext *resample; /* for audio resampling */
226     int resample_sample_fmt;
227     int resample_channels;
228     int resample_sample_rate;
229     int reformat_pair;
230     AVAudioConvert *reformat_ctx;
231     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
232     FILE *logfile;
233
234 #if CONFIG_AVFILTER
235     AVFilterContext *output_video_filter;
236     AVFilterContext *input_video_filter;
237     AVFilterBufferRef *picref;
238     char *avfilter;
239     AVFilterGraph *graph;
240 #endif
241
242    int sws_flags;
243    AVDictionary *opts;
244    int is_past_recording_time;
245 } OutputStream;
246
247 #if HAVE_TERMIOS_H
248
249 /* init terminal so that we can grab keys */
250 static struct termios oldtty;
251 #endif
252
253 typedef struct OutputFile {
254     AVFormatContext *ctx;
255     AVDictionary *opts;
256     int ost_index;       /* index of the first stream in output_streams */
257     int64_t recording_time; /* desired length of the resulting file in microseconds */
258     int64_t start_time;     /* start time in microseconds */
259     uint64_t limit_filesize;
260 } OutputFile;
261
262 static InputStream *input_streams = NULL;
263 static int         nb_input_streams = 0;
264 static InputFile   *input_files   = NULL;
265 static int         nb_input_files   = 0;
266
267 static OutputStream *output_streams = NULL;
268 static int        nb_output_streams = 0;
269 static OutputFile   *output_files   = NULL;
270 static int        nb_output_files   = 0;
271
272 typedef struct OptionsContext {
273     /* input/output options */
274     int64_t start_time;
275     const char *format;
276
277     SpecifierOpt *codec_names;
278     int        nb_codec_names;
279     SpecifierOpt *audio_channels;
280     int        nb_audio_channels;
281     SpecifierOpt *audio_sample_rate;
282     int        nb_audio_sample_rate;
283     SpecifierOpt *frame_rates;
284     int        nb_frame_rates;
285     SpecifierOpt *frame_sizes;
286     int        nb_frame_sizes;
287     SpecifierOpt *frame_pix_fmts;
288     int        nb_frame_pix_fmts;
289
290     /* input options */
291     int64_t input_ts_offset;
292     int rate_emu;
293
294     SpecifierOpt *ts_scale;
295     int        nb_ts_scale;
296
297     /* output options */
298     StreamMap *stream_maps;
299     int     nb_stream_maps;
300     /* first item specifies output metadata, second is input */
301     MetadataMap (*meta_data_maps)[2];
302     int nb_meta_data_maps;
303     int metadata_global_manual;
304     int metadata_streams_manual;
305     int metadata_chapters_manual;
306
307     int chapters_input_file;
308
309     int64_t recording_time;
310     uint64_t limit_filesize;
311     float mux_preload;
312     float mux_max_delay;
313
314     int video_disable;
315     int audio_disable;
316     int subtitle_disable;
317     int data_disable;
318
319     /* indexed by output file stream index */
320     int   *streamid_map;
321     int nb_streamid_map;
322
323     SpecifierOpt *metadata;
324     int        nb_metadata;
325     SpecifierOpt *max_frames;
326     int        nb_max_frames;
327     SpecifierOpt *bitstream_filters;
328     int        nb_bitstream_filters;
329     SpecifierOpt *codec_tags;
330     int        nb_codec_tags;
331     SpecifierOpt *sample_fmts;
332     int        nb_sample_fmts;
333     SpecifierOpt *qscale;
334     int        nb_qscale;
335     SpecifierOpt *forced_key_frames;
336     int        nb_forced_key_frames;
337     SpecifierOpt *force_fps;
338     int        nb_force_fps;
339     SpecifierOpt *frame_aspect_ratios;
340     int        nb_frame_aspect_ratios;
341     SpecifierOpt *rc_overrides;
342     int        nb_rc_overrides;
343     SpecifierOpt *intra_matrices;
344     int        nb_intra_matrices;
345     SpecifierOpt *inter_matrices;
346     int        nb_inter_matrices;
347     SpecifierOpt *top_field_first;
348     int        nb_top_field_first;
349 #if CONFIG_AVFILTER
350     SpecifierOpt *filters;
351     int        nb_filters;
352 #endif
353 } OptionsContext;
354
355 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
356 {\
357     int i, ret;\
358     for (i = 0; i < o->nb_ ## name; i++) {\
359         char *spec = o->name[i].specifier;\
360         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
361             outvar = o->name[i].u.type;\
362         else if (ret < 0)\
363             exit_program(1);\
364     }\
365 }
366
367 static void reset_options(OptionsContext *o)
368 {
369     const OptionDef *po = options;
370
371     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
372     while (po->name) {
373         void *dst = (uint8_t*)o + po->u.off;
374
375         if (po->flags & OPT_SPEC) {
376             SpecifierOpt **so = dst;
377             int i, *count = (int*)(so + 1);
378             for (i = 0; i < *count; i++) {
379                 av_freep(&(*so)[i].specifier);
380                 if (po->flags & OPT_STRING)
381                     av_freep(&(*so)[i].u.str);
382             }
383             av_freep(so);
384             *count = 0;
385         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
386             av_freep(dst);
387         po++;
388     }
389
390     av_freep(&o->stream_maps);
391     av_freep(&o->meta_data_maps);
392     av_freep(&o->streamid_map);
393
394     memset(o, 0, sizeof(*o));
395
396     o->mux_preload    = 0.5;
397     o->mux_max_delay  = 0.7;
398     o->recording_time = INT64_MAX;
399     o->limit_filesize = UINT64_MAX;
400     o->chapters_input_file = INT_MAX;
401
402     uninit_opts();
403     init_opts();
404 }
405
406 #if CONFIG_AVFILTER
407
408 static int configure_video_filters(InputStream *ist, OutputStream *ost)
409 {
410     AVFilterContext *last_filter, *filter;
411     /** filter graph containing all filters including input & output */
412     AVCodecContext *codec = ost->st->codec;
413     AVCodecContext *icodec = ist->st->codec;
414     enum PixelFormat pix_fmts[] = { codec->pix_fmt, PIX_FMT_NONE };
415     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
416     AVRational sample_aspect_ratio;
417     char args[255];
418     int ret;
419
420     ost->graph = avfilter_graph_alloc();
421
422     if (ist->st->sample_aspect_ratio.num){
423         sample_aspect_ratio = ist->st->sample_aspect_ratio;
424     }else
425         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
426
427     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
428              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
429              sample_aspect_ratio.num, sample_aspect_ratio.den);
430
431     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
432                                        "src", args, NULL, ost->graph);
433     if (ret < 0)
434         return ret;
435 #if FF_API_OLD_VSINK_API
436     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
437                                        "out", NULL, pix_fmts, ost->graph);
438 #else
439     buffersink_params->pixel_fmts = pix_fmts;
440     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
441                                        "out", NULL, buffersink_params, ost->graph);
442 #endif
443     av_freep(&buffersink_params);
444     if (ret < 0)
445         return ret;
446     last_filter = ost->input_video_filter;
447
448     if (codec->width  != icodec->width || codec->height != icodec->height) {
449         snprintf(args, 255, "%d:%d:flags=0x%X",
450                  codec->width,
451                  codec->height,
452                  ost->sws_flags);
453         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
454                                                 NULL, args, NULL, ost->graph)) < 0)
455             return ret;
456         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
457             return ret;
458         last_filter = filter;
459     }
460
461     snprintf(args, sizeof(args), "flags=0x%X", ost->sws_flags);
462     ost->graph->scale_sws_opts = av_strdup(args);
463
464     if (ost->avfilter) {
465         AVFilterInOut *outputs = avfilter_inout_alloc();
466         AVFilterInOut *inputs  = avfilter_inout_alloc();
467
468         outputs->name    = av_strdup("in");
469         outputs->filter_ctx = last_filter;
470         outputs->pad_idx = 0;
471         outputs->next    = NULL;
472
473         inputs->name    = av_strdup("out");
474         inputs->filter_ctx = ost->output_video_filter;
475         inputs->pad_idx = 0;
476         inputs->next    = NULL;
477
478         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, &inputs, &outputs, NULL)) < 0)
479             return ret;
480         av_freep(&ost->avfilter);
481     } else {
482         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
483             return ret;
484     }
485
486     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
487         return ret;
488
489     codec->width  = ost->output_video_filter->inputs[0]->w;
490     codec->height = ost->output_video_filter->inputs[0]->h;
491     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
492         ost->frame_aspect_ratio ? // overridden by the -aspect cli option
493         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
494         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
495
496     return 0;
497 }
498 #endif /* CONFIG_AVFILTER */
499
500 static void term_exit(void)
501 {
502     av_log(NULL, AV_LOG_QUIET, "%s", "");
503 #if HAVE_TERMIOS_H
504     if(!run_as_daemon)
505         tcsetattr (0, TCSANOW, &oldtty);
506 #endif
507 }
508
509 static volatile int received_sigterm = 0;
510
511 static void
512 sigterm_handler(int sig)
513 {
514     received_sigterm = sig;
515     q_pressed++;
516     term_exit();
517 }
518
519 static void term_init(void)
520 {
521 #if HAVE_TERMIOS_H
522     if(!run_as_daemon){
523     struct termios tty;
524
525     tcgetattr (0, &tty);
526     oldtty = tty;
527     atexit(term_exit);
528
529     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
530                           |INLCR|IGNCR|ICRNL|IXON);
531     tty.c_oflag |= OPOST;
532     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
533     tty.c_cflag &= ~(CSIZE|PARENB);
534     tty.c_cflag |= CS8;
535     tty.c_cc[VMIN] = 1;
536     tty.c_cc[VTIME] = 0;
537
538     tcsetattr (0, TCSANOW, &tty);
539     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
540     }
541 #endif
542
543     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
544     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
545 #ifdef SIGXCPU
546     signal(SIGXCPU, sigterm_handler);
547 #endif
548 }
549
550 /* read a key without blocking */
551 static int read_key(void)
552 {
553 #if HAVE_TERMIOS_H
554     int n = 1;
555     unsigned char ch;
556     struct timeval tv;
557     fd_set rfds;
558
559     if(run_as_daemon)
560         return -1;
561
562     FD_ZERO(&rfds);
563     FD_SET(0, &rfds);
564     tv.tv_sec = 0;
565     tv.tv_usec = 0;
566     n = select(1, &rfds, NULL, NULL, &tv);
567     if (n > 0) {
568         n = read(0, &ch, 1);
569         if (n == 1)
570             return ch;
571
572         return n;
573     }
574 #elif HAVE_KBHIT
575     if(kbhit())
576         return(getch());
577 #endif
578     return -1;
579 }
580
581 static int decode_interrupt_cb(void)
582 {
583     q_pressed += read_key() == 'q';
584     return q_pressed > 1;
585 }
586
587 void exit_program(int ret)
588 {
589     int i;
590
591     /* close files */
592     for(i=0;i<nb_output_files;i++) {
593         AVFormatContext *s = output_files[i].ctx;
594         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
595             avio_close(s->pb);
596         avformat_free_context(s);
597         av_dict_free(&output_files[i].opts);
598     }
599     for(i=0;i<nb_input_files;i++) {
600         av_close_input_file(input_files[i].ctx);
601     }
602     for (i = 0; i < nb_input_streams; i++)
603         av_dict_free(&input_streams[i].opts);
604
605     if (vstats_file)
606         fclose(vstats_file);
607     av_free(vstats_filename);
608
609     av_freep(&input_streams);
610     av_freep(&input_files);
611     av_freep(&output_streams);
612     av_freep(&output_files);
613
614     uninit_opts();
615     av_free(audio_buf);
616     av_free(audio_out);
617     allocated_audio_buf_size= allocated_audio_out_size= 0;
618     av_free(samples);
619
620 #if CONFIG_AVFILTER
621     avfilter_uninit();
622 #endif
623
624     if (received_sigterm) {
625         fprintf(stderr,
626             "Received signal %d: terminating.\n",
627             (int) received_sigterm);
628         exit (255);
629     }
630
631     exit(ret); /* not all OS-es handle main() return value */
632 }
633
634 static void assert_avoptions(AVDictionary *m)
635 {
636     AVDictionaryEntry *t;
637     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
638         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
639         exit_program(1);
640     }
641 }
642
643 static void assert_codec_experimental(AVCodecContext *c, int encoder)
644 {
645     const char *codec_string = encoder ? "encoder" : "decoder";
646     AVCodec *codec;
647     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
648         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
649         av_log(NULL, AV_LOG_ERROR, "%s '%s' is experimental and might produce bad "
650                 "results.\nAdd '-strict experimental' if you want to use it.\n",
651                 codec_string, c->codec->name);
652         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
653         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
654             av_log(NULL, AV_LOG_ERROR, "Or use the non experimental %s '%s'.\n",
655                    codec_string, codec->name);
656         exit_program(1);
657     }
658 }
659
660 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
661 {
662     if(codec && codec->sample_fmts){
663         const enum AVSampleFormat *p= codec->sample_fmts;
664         for(; *p!=-1; p++){
665             if(*p == st->codec->sample_fmt)
666                 break;
667         }
668         if (*p == -1) {
669             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
670                 av_log(NULL, AV_LOG_ERROR, "Convertion will not be lossless'\n");
671             if(av_get_sample_fmt_name(st->codec->sample_fmt))
672             av_log(NULL, AV_LOG_WARNING,
673                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
674                    av_get_sample_fmt_name(st->codec->sample_fmt),
675                    codec->name,
676                    av_get_sample_fmt_name(codec->sample_fmts[0]));
677             st->codec->sample_fmt = codec->sample_fmts[0];
678         }
679     }
680 }
681
682 static void choose_sample_rate(AVStream *st, AVCodec *codec)
683 {
684     if(codec && codec->supported_samplerates){
685         const int *p= codec->supported_samplerates;
686         int best=0;
687         int best_dist=INT_MAX;
688         for(; *p; p++){
689             int dist= abs(st->codec->sample_rate - *p);
690             if(dist < best_dist){
691                 best_dist= dist;
692                 best= *p;
693             }
694         }
695         if(best_dist){
696             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
697         }
698         st->codec->sample_rate= best;
699     }
700 }
701
702 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
703 {
704     if(codec && codec->pix_fmts){
705         const enum PixelFormat *p= codec->pix_fmts;
706         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
707             if(st->codec->codec_id==CODEC_ID_MJPEG){
708                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
709             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
710                 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};
711             }
712         }
713         for(; *p!=-1; p++){
714             if(*p == st->codec->pix_fmt)
715                 break;
716         }
717         if (*p == -1) {
718             if(st->codec->pix_fmt != PIX_FMT_NONE)
719                 av_log(NULL, AV_LOG_WARNING,
720                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
721                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
722                         codec->name,
723                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
724             st->codec->pix_fmt = codec->pix_fmts[0];
725         }
726     }
727 }
728
729 static double
730 get_sync_ipts(const OutputStream *ost)
731 {
732     const InputStream *ist = ost->sync_ist;
733     OutputFile *of = &output_files[ost->file_index];
734     return (double)(ist->pts - of->start_time)/AV_TIME_BASE;
735 }
736
737 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
738     int ret;
739
740     while(bsfc){
741         AVPacket new_pkt= *pkt;
742         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
743                                           &new_pkt.data, &new_pkt.size,
744                                           pkt->data, pkt->size,
745                                           pkt->flags & AV_PKT_FLAG_KEY);
746         if(a>0){
747             av_free_packet(pkt);
748             new_pkt.destruct= av_destruct_packet;
749         } else if(a<0){
750             fprintf(stderr, "%s failed for stream %d, codec %s",
751                     bsfc->filter->name, pkt->stream_index,
752                     avctx->codec ? avctx->codec->name : "copy");
753             print_error("", a);
754             if (exit_on_error)
755                 exit_program(1);
756         }
757         *pkt= new_pkt;
758
759         bsfc= bsfc->next;
760     }
761
762     ret= av_interleaved_write_frame(s, pkt);
763     if(ret < 0){
764         print_error("av_interleaved_write_frame()", ret);
765         exit_program(1);
766     }
767 }
768
769 static void do_audio_out(AVFormatContext *s,
770                          OutputStream *ost,
771                          InputStream *ist,
772                          unsigned char *buf, int size)
773 {
774     uint8_t *buftmp;
775     int64_t audio_out_size, audio_buf_size;
776     int64_t allocated_for_size= size;
777
778     int size_out, frame_bytes, ret, resample_changed;
779     AVCodecContext *enc= ost->st->codec;
780     AVCodecContext *dec= ist->st->codec;
781     int osize = av_get_bytes_per_sample(enc->sample_fmt);
782     int isize = av_get_bytes_per_sample(dec->sample_fmt);
783     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
784
785 need_realloc:
786     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
787     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
788     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
789     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
790     audio_buf_size*= osize*enc->channels;
791
792     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
793     if(coded_bps > 8*osize)
794         audio_out_size= audio_out_size * coded_bps / (8*osize);
795     audio_out_size += FF_MIN_BUFFER_SIZE;
796
797     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
798         fprintf(stderr, "Buffer sizes too large\n");
799         exit_program(1);
800     }
801
802     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
803     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
804     if (!audio_buf || !audio_out){
805         fprintf(stderr, "Out of memory in do_audio_out\n");
806         exit_program(1);
807     }
808
809     if (enc->channels != dec->channels)
810         ost->audio_resample = 1;
811
812     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
813                        ost->resample_channels    != dec->channels   ||
814                        ost->resample_sample_rate != dec->sample_rate;
815
816     if ((ost->audio_resample && !ost->resample) || resample_changed) {
817         if (resample_changed) {
818             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",
819                    ist->file_index, ist->st->index,
820                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
821                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
822             ost->resample_sample_fmt  = dec->sample_fmt;
823             ost->resample_channels    = dec->channels;
824             ost->resample_sample_rate = dec->sample_rate;
825             if (ost->resample)
826                 audio_resample_close(ost->resample);
827         }
828         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
829         if (audio_sync_method <= 1 &&
830             ost->resample_sample_fmt  == enc->sample_fmt &&
831             ost->resample_channels    == enc->channels   &&
832             ost->resample_sample_rate == enc->sample_rate) {
833             ost->resample = NULL;
834             ost->audio_resample = 0;
835         } else {
836             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
837                 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
838             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
839                                                    enc->sample_rate, dec->sample_rate,
840                                                    enc->sample_fmt,  dec->sample_fmt,
841                                                    16, 10, 0, 0.8);
842             if (!ost->resample) {
843                 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
844                         dec->channels, dec->sample_rate,
845                         enc->channels, enc->sample_rate);
846                 exit_program(1);
847             }
848         }
849     }
850
851 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
852     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
853         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
854         if (ost->reformat_ctx)
855             av_audio_convert_free(ost->reformat_ctx);
856         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
857                                                    dec->sample_fmt, 1, NULL, 0);
858         if (!ost->reformat_ctx) {
859             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
860                 av_get_sample_fmt_name(dec->sample_fmt),
861                 av_get_sample_fmt_name(enc->sample_fmt));
862             exit_program(1);
863         }
864         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
865     }
866
867     if(audio_sync_method){
868         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
869                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
870         double idelta= delta*dec->sample_rate / enc->sample_rate;
871         int byte_delta= ((int)idelta)*2*dec->channels;
872
873         //FIXME resample delay
874         if(fabs(delta) > 50){
875             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
876                 if(byte_delta < 0){
877                     byte_delta= FFMAX(byte_delta, -size);
878                     size += byte_delta;
879                     buf  -= byte_delta;
880                     if(verbose > 2)
881                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
882                     if(!size)
883                         return;
884                     ist->is_start=0;
885                 }else{
886                     static uint8_t *input_tmp= NULL;
887                     input_tmp= av_realloc(input_tmp, byte_delta + size);
888
889                     if(byte_delta > allocated_for_size - size){
890                         allocated_for_size= byte_delta + (int64_t)size;
891                         goto need_realloc;
892                     }
893                     ist->is_start=0;
894
895                     memset(input_tmp, 0, byte_delta);
896                     memcpy(input_tmp + byte_delta, buf, size);
897                     buf= input_tmp;
898                     size += byte_delta;
899                     if(verbose > 2)
900                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
901                 }
902             }else if(audio_sync_method>1){
903                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
904                 av_assert0(ost->audio_resample);
905                 if(verbose > 2)
906                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
907 //                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));
908                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
909             }
910         }
911     }else
912         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
913                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
914
915     if (ost->audio_resample) {
916         buftmp = audio_buf;
917         size_out = audio_resample(ost->resample,
918                                   (short *)buftmp, (short *)buf,
919                                   size / (dec->channels * isize));
920         size_out = size_out * enc->channels * osize;
921     } else {
922         buftmp = buf;
923         size_out = size;
924     }
925
926     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
927         const void *ibuf[6]= {buftmp};
928         void *obuf[6]= {audio_buf};
929         int istride[6]= {isize};
930         int ostride[6]= {osize};
931         int len= size_out/istride[0];
932         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
933             printf("av_audio_convert() failed\n");
934             if (exit_on_error)
935                 exit_program(1);
936             return;
937         }
938         buftmp = audio_buf;
939         size_out = len*osize;
940     }
941
942     /* now encode as many frames as possible */
943     if (enc->frame_size > 1) {
944         /* output resampled raw samples */
945         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
946             fprintf(stderr, "av_fifo_realloc2() failed\n");
947             exit_program(1);
948         }
949         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
950
951         frame_bytes = enc->frame_size * osize * enc->channels;
952
953         while (av_fifo_size(ost->fifo) >= frame_bytes) {
954             AVPacket pkt;
955             av_init_packet(&pkt);
956
957             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
958
959             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
960
961             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
962                                        (short *)audio_buf);
963             if (ret < 0) {
964                 fprintf(stderr, "Audio encoding failed\n");
965                 exit_program(1);
966             }
967             audio_size += ret;
968             pkt.stream_index= ost->index;
969             pkt.data= audio_out;
970             pkt.size= ret;
971             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
972                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
973             pkt.flags |= AV_PKT_FLAG_KEY;
974             write_frame(s, &pkt, enc, ost->bitstream_filters);
975
976             ost->sync_opts += enc->frame_size;
977         }
978     } else {
979         AVPacket pkt;
980         av_init_packet(&pkt);
981
982         ost->sync_opts += size_out / (osize * enc->channels);
983
984         /* output a pcm frame */
985         /* determine the size of the coded buffer */
986         size_out /= osize;
987         if (coded_bps)
988             size_out = size_out*coded_bps/8;
989
990         if(size_out > audio_out_size){
991             fprintf(stderr, "Internal error, buffer size too small\n");
992             exit_program(1);
993         }
994
995         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
996         ret = avcodec_encode_audio(enc, audio_out, size_out,
997                                    (short *)buftmp);
998         if (ret < 0) {
999             fprintf(stderr, "Audio encoding failed\n");
1000             exit_program(1);
1001         }
1002         audio_size += ret;
1003         pkt.stream_index= ost->index;
1004         pkt.data= audio_out;
1005         pkt.size= ret;
1006         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1007             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1008         pkt.flags |= AV_PKT_FLAG_KEY;
1009         write_frame(s, &pkt, enc, ost->bitstream_filters);
1010     }
1011 }
1012
1013 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1014 {
1015     AVCodecContext *dec;
1016     AVPicture *picture2;
1017     AVPicture picture_tmp;
1018     uint8_t *buf = 0;
1019
1020     dec = ist->st->codec;
1021
1022     /* deinterlace : must be done before any resize */
1023     if (do_deinterlace) {
1024         int size;
1025
1026         /* create temporary picture */
1027         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1028         buf = av_malloc(size);
1029         if (!buf)
1030             return;
1031
1032         picture2 = &picture_tmp;
1033         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1034
1035         if(avpicture_deinterlace(picture2, picture,
1036                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1037             /* if error, do not deinterlace */
1038             fprintf(stderr, "Deinterlacing failed\n");
1039             av_free(buf);
1040             buf = NULL;
1041             picture2 = picture;
1042         }
1043     } else {
1044         picture2 = picture;
1045     }
1046
1047     if (picture != picture2)
1048         *picture = *picture2;
1049     *bufp = buf;
1050 }
1051
1052 static void do_subtitle_out(AVFormatContext *s,
1053                             OutputStream *ost,
1054                             InputStream *ist,
1055                             AVSubtitle *sub,
1056                             int64_t pts)
1057 {
1058     static uint8_t *subtitle_out = NULL;
1059     int subtitle_out_max_size = 1024 * 1024;
1060     int subtitle_out_size, nb, i;
1061     AVCodecContext *enc;
1062     AVPacket pkt;
1063
1064     if (pts == AV_NOPTS_VALUE) {
1065         fprintf(stderr, "Subtitle packets must have a pts\n");
1066         if (exit_on_error)
1067             exit_program(1);
1068         return;
1069     }
1070
1071     enc = ost->st->codec;
1072
1073     if (!subtitle_out) {
1074         subtitle_out = av_malloc(subtitle_out_max_size);
1075     }
1076
1077     /* Note: DVB subtitle need one packet to draw them and one other
1078        packet to clear them */
1079     /* XXX: signal it in the codec context ? */
1080     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1081         nb = 2;
1082     else
1083         nb = 1;
1084
1085     for(i = 0; i < nb; i++) {
1086         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1087         // start_display_time is required to be 0
1088         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1089         sub->end_display_time -= sub->start_display_time;
1090         sub->start_display_time = 0;
1091         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1092                                                     subtitle_out_max_size, sub);
1093         if (subtitle_out_size < 0) {
1094             fprintf(stderr, "Subtitle encoding failed\n");
1095             exit_program(1);
1096         }
1097
1098         av_init_packet(&pkt);
1099         pkt.stream_index = ost->index;
1100         pkt.data = subtitle_out;
1101         pkt.size = subtitle_out_size;
1102         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1103         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1104             /* XXX: the pts correction is handled here. Maybe handling
1105                it in the codec would be better */
1106             if (i == 0)
1107                 pkt.pts += 90 * sub->start_display_time;
1108             else
1109                 pkt.pts += 90 * sub->end_display_time;
1110         }
1111         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1112     }
1113 }
1114
1115 static int bit_buffer_size= 1024*256;
1116 static uint8_t *bit_buffer= NULL;
1117
1118 static void do_video_resample(OutputStream *ost,
1119                               InputStream *ist,
1120                               AVFrame *in_picture,
1121                               AVFrame **out_picture)
1122 {
1123     int resample_changed = 0;
1124     AVCodecContext *dec = ist->st->codec;
1125     AVCodecContext *enc = ost->st->codec;
1126     *out_picture = in_picture;
1127
1128     resample_changed = ost->resample_width   != dec->width  ||
1129                        ost->resample_height  != dec->height ||
1130                        ost->resample_pix_fmt != dec->pix_fmt;
1131
1132 #if !CONFIG_AVFILTER
1133     if (resample_changed) {
1134         av_log(NULL, AV_LOG_INFO,
1135                "Input stream #%d.%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1136                ist->file_index, ist->st->index,
1137                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1138                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1139         ost->resample_width   = dec->width;
1140         ost->resample_height  = dec->height;
1141         ost->resample_pix_fmt = dec->pix_fmt;
1142     }
1143
1144     ost->video_resample = dec->width   != enc->width  ||
1145                           dec->height  != enc->height ||
1146                           dec->pix_fmt != enc->pix_fmt;
1147
1148     if (ost->video_resample) {
1149         *out_picture = &ost->resample_frame;
1150         if (!ost->img_resample_ctx || resample_changed) {
1151             /* initialize the destination picture */
1152             if (!ost->resample_frame.data[0]) {
1153                 avcodec_get_frame_defaults(&ost->resample_frame);
1154                 if (avpicture_alloc((AVPicture *)&ost->resample_frame, enc->pix_fmt,
1155                                     enc->width, enc->height)) {
1156                     fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
1157                     exit_program(1);
1158                 }
1159             }
1160             /* initialize a new scaler context */
1161             sws_freeContext(ost->img_resample_ctx);
1162             ost->img_resample_ctx = sws_getContext(dec->width, dec->height, dec->pix_fmt,
1163                                                    enc->width, enc->height, enc->pix_fmt,
1164                                                    ost->sws_flags, NULL, NULL, NULL);
1165             if (ost->img_resample_ctx == NULL) {
1166                 fprintf(stderr, "Cannot get resampling context\n");
1167                 exit_program(1);
1168             }
1169         }
1170         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1171               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1172     }
1173 #else
1174     if (resample_changed) {
1175         avfilter_graph_free(&ost->graph);
1176         if (configure_video_filters(ist, ost)) {
1177             fprintf(stderr, "Error reinitializing filters!\n");
1178             exit_program(1);
1179         }
1180     }
1181 #endif
1182     if (resample_changed) {
1183         ost->resample_width   = dec->width;
1184         ost->resample_height  = dec->height;
1185         ost->resample_pix_fmt = dec->pix_fmt;
1186     }
1187 }
1188
1189
1190 static void do_video_out(AVFormatContext *s,
1191                          OutputStream *ost,
1192                          InputStream *ist,
1193                          AVFrame *in_picture,
1194                          int *frame_size, float quality)
1195 {
1196     int nb_frames, i, ret, format_video_sync;
1197     AVFrame *final_picture;
1198     AVCodecContext *enc;
1199     double sync_ipts;
1200
1201     enc = ost->st->codec;
1202
1203     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1204
1205     /* by default, we output a single frame */
1206     nb_frames = 1;
1207
1208     *frame_size = 0;
1209
1210     format_video_sync = video_sync_method;
1211     if (format_video_sync < 0)
1212         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? 2 : 1;
1213
1214     if (format_video_sync) {
1215         double vdelta = sync_ipts - ost->sync_opts;
1216         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1217         if (vdelta < -1.1)
1218             nb_frames = 0;
1219         else if (format_video_sync == 2) {
1220             if(vdelta<=-0.6){
1221                 nb_frames=0;
1222             }else if(vdelta>0.6)
1223                 ost->sync_opts= lrintf(sync_ipts);
1224         }else if (vdelta > 1.1)
1225             nb_frames = lrintf(vdelta);
1226 //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);
1227         if (nb_frames == 0){
1228             ++nb_frames_drop;
1229             if (verbose>2)
1230                 fprintf(stderr, "*** drop!\n");
1231         }else if (nb_frames > 1) {
1232             nb_frames_dup += nb_frames - 1;
1233             if (verbose>2)
1234                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1235         }
1236     }else
1237         ost->sync_opts= lrintf(sync_ipts);
1238
1239     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1240     if (nb_frames <= 0)
1241         return;
1242
1243     do_video_resample(ost, ist, in_picture, &final_picture);
1244
1245     /* duplicates frame if needed */
1246     for(i=0;i<nb_frames;i++) {
1247         AVPacket pkt;
1248         av_init_packet(&pkt);
1249         pkt.stream_index= ost->index;
1250
1251         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1252             /* raw pictures are written as AVPicture structure to
1253                avoid any copies. We support temporarily the older
1254                method. */
1255             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1256             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1257             pkt.data= (uint8_t *)final_picture;
1258             pkt.size=  sizeof(AVPicture);
1259             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1260             pkt.flags |= AV_PKT_FLAG_KEY;
1261
1262             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1263         } else {
1264             AVFrame big_picture;
1265
1266             big_picture= *final_picture;
1267             /* better than nothing: use input picture interlaced
1268                settings */
1269             big_picture.interlaced_frame = in_picture->interlaced_frame;
1270             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1271                 if (ost->top_field_first == -1)
1272                     big_picture.top_field_first = in_picture->top_field_first;
1273                 else
1274                     big_picture.top_field_first = !!ost->top_field_first;
1275             }
1276
1277             /* handles same_quant here. This is not correct because it may
1278                not be a global option */
1279             big_picture.quality = quality;
1280             if (!enc->me_threshold)
1281                 big_picture.pict_type = 0;
1282 //            big_picture.pts = AV_NOPTS_VALUE;
1283             big_picture.pts= ost->sync_opts;
1284 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1285 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1286             if (ost->forced_kf_index < ost->forced_kf_count &&
1287                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1288                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1289                 ost->forced_kf_index++;
1290             }
1291             ret = avcodec_encode_video(enc,
1292                                        bit_buffer, bit_buffer_size,
1293                                        &big_picture);
1294             if (ret < 0) {
1295                 fprintf(stderr, "Video encoding failed\n");
1296                 exit_program(1);
1297             }
1298
1299             if(ret>0){
1300                 pkt.data= bit_buffer;
1301                 pkt.size= ret;
1302                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1303                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1304 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1305    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1306    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1307
1308                 if(enc->coded_frame->key_frame)
1309                     pkt.flags |= AV_PKT_FLAG_KEY;
1310                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1311                 *frame_size = ret;
1312                 video_size += ret;
1313                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1314                 //        enc->frame_number-1, ret, enc->pict_type);
1315                 /* if two pass, output log */
1316                 if (ost->logfile && enc->stats_out) {
1317                     fprintf(ost->logfile, "%s", enc->stats_out);
1318                 }
1319             }
1320         }
1321         ost->sync_opts++;
1322         ost->frame_number++;
1323     }
1324 }
1325
1326 static double psnr(double d){
1327     return -10.0*log(d)/log(10.0);
1328 }
1329
1330 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1331                            int frame_size)
1332 {
1333     AVCodecContext *enc;
1334     int frame_number;
1335     double ti1, bitrate, avg_bitrate;
1336
1337     /* this is executed just the first time do_video_stats is called */
1338     if (!vstats_file) {
1339         vstats_file = fopen(vstats_filename, "w");
1340         if (!vstats_file) {
1341             perror("fopen");
1342             exit_program(1);
1343         }
1344     }
1345
1346     enc = ost->st->codec;
1347     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1348         frame_number = ost->frame_number;
1349         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1350         if (enc->flags&CODEC_FLAG_PSNR)
1351             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1352
1353         fprintf(vstats_file,"f_size= %6d ", frame_size);
1354         /* compute pts value */
1355         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1356         if (ti1 < 0.01)
1357             ti1 = 0.01;
1358
1359         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1360         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1361         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1362             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1363         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1364     }
1365 }
1366
1367 static void print_report(OutputFile *output_files,
1368                          OutputStream *ost_table, int nb_ostreams,
1369                          int is_last_report, int64_t timer_start)
1370 {
1371     char buf[1024];
1372     OutputStream *ost;
1373     AVFormatContext *oc;
1374     int64_t total_size;
1375     AVCodecContext *enc;
1376     int frame_number, vid, i;
1377     double bitrate;
1378     int64_t pts = INT64_MAX;
1379     static int64_t last_time = -1;
1380     static int qp_histogram[52];
1381
1382     if (!is_last_report) {
1383         int64_t cur_time;
1384         /* display the report every 0.5 seconds */
1385         cur_time = av_gettime();
1386         if (last_time == -1) {
1387             last_time = cur_time;
1388             return;
1389         }
1390         if ((cur_time - last_time) < 500000)
1391             return;
1392         last_time = cur_time;
1393     }
1394
1395
1396     oc = output_files[0].ctx;
1397
1398     total_size = avio_size(oc->pb);
1399     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1400         total_size= avio_tell(oc->pb);
1401
1402     buf[0] = '\0';
1403     vid = 0;
1404     for(i=0;i<nb_ostreams;i++) {
1405         float q = -1;
1406         ost = &ost_table[i];
1407         enc = ost->st->codec;
1408         if (!ost->st->stream_copy && enc->coded_frame)
1409             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1410         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1411             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1412         }
1413         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1414             float t = (av_gettime()-timer_start) / 1000000.0;
1415
1416             frame_number = ost->frame_number;
1417             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1418                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1419             if(is_last_report)
1420                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1421             if(qp_hist){
1422                 int j;
1423                 int qp = lrintf(q);
1424                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1425                     qp_histogram[qp]++;
1426                 for(j=0; j<32; j++)
1427                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1428             }
1429             if (enc->flags&CODEC_FLAG_PSNR){
1430                 int j;
1431                 double error, error_sum=0;
1432                 double scale, scale_sum=0;
1433                 char type[3]= {'Y','U','V'};
1434                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1435                 for(j=0; j<3; j++){
1436                     if(is_last_report){
1437                         error= enc->error[j];
1438                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1439                     }else{
1440                         error= enc->coded_frame->error[j];
1441                         scale= enc->width*enc->height*255.0*255.0;
1442                     }
1443                     if(j) scale/=4;
1444                     error_sum += error;
1445                     scale_sum += scale;
1446                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1447                 }
1448                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1449             }
1450             vid = 1;
1451         }
1452         /* compute min output value */
1453         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
1454                                       ost->st->time_base, AV_TIME_BASE_Q));
1455     }
1456
1457     if (verbose > 0 || is_last_report) {
1458         int hours, mins, secs, us;
1459         secs = pts / AV_TIME_BASE;
1460         us = pts % AV_TIME_BASE;
1461         mins = secs / 60;
1462         secs %= 60;
1463         hours = mins / 60;
1464         mins %= 60;
1465
1466         bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1467
1468         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1469                  "size=%8.0fkB time=", total_size / 1024.0);
1470         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1471                  "%02d:%02d:%02d.%02d ", hours, mins, secs,
1472                  (100 * us) / AV_TIME_BASE);
1473         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1474                  "bitrate=%6.1fkbits/s", bitrate);
1475
1476         if (nb_frames_dup || nb_frames_drop)
1477           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1478                   nb_frames_dup, nb_frames_drop);
1479
1480         if (verbose >= 0)
1481             fprintf(stderr, "%s    \r", buf);
1482
1483         fflush(stderr);
1484     }
1485
1486     if (is_last_report && verbose >= 0){
1487         int64_t raw= audio_size + video_size + extra_size;
1488         fprintf(stderr, "\n");
1489         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1490                 video_size/1024.0,
1491                 audio_size/1024.0,
1492                 extra_size/1024.0,
1493                 100.0*(total_size - raw)/raw
1494         );
1495     }
1496 }
1497
1498 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1499 {
1500     int fill_char = 0x00;
1501     if (sample_fmt == AV_SAMPLE_FMT_U8)
1502         fill_char = 0x80;
1503     memset(buf, fill_char, size);
1504 }
1505
1506 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1507 {
1508     int i, ret;
1509
1510     for (i = 0; i < nb_ostreams; i++) {
1511         OutputStream   *ost = &ost_table[i];
1512         AVCodecContext *enc = ost->st->codec;
1513         AVFormatContext *os = output_files[ost->file_index].ctx;
1514
1515         if (!ost->encoding_needed)
1516             continue;
1517
1518         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1519             continue;
1520         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1521             continue;
1522
1523         for(;;) {
1524             AVPacket pkt;
1525             int fifo_bytes;
1526             av_init_packet(&pkt);
1527             pkt.stream_index= ost->index;
1528
1529             switch (ost->st->codec->codec_type) {
1530             case AVMEDIA_TYPE_AUDIO:
1531                 fifo_bytes = av_fifo_size(ost->fifo);
1532                 ret = 0;
1533                 /* encode any samples remaining in fifo */
1534                 if (fifo_bytes > 0) {
1535                     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1536                     int fs_tmp = enc->frame_size;
1537
1538                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1539                     if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1540                         enc->frame_size = fifo_bytes / (osize * enc->channels);
1541                     } else { /* pad */
1542                         int frame_bytes = enc->frame_size*osize*enc->channels;
1543                         if (allocated_audio_buf_size < frame_bytes)
1544                             exit_program(1);
1545                         generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1546                     }
1547
1548                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1549                     pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1550                                               ost->st->time_base.num, enc->sample_rate);
1551                     enc->frame_size = fs_tmp;
1552                 }
1553                 if (ret <= 0) {
1554                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1555                 }
1556                 if (ret < 0) {
1557                     fprintf(stderr, "Audio encoding failed\n");
1558                     exit_program(1);
1559                 }
1560                 audio_size += ret;
1561                 pkt.flags |= AV_PKT_FLAG_KEY;
1562                 break;
1563             case AVMEDIA_TYPE_VIDEO:
1564                 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1565                 if (ret < 0) {
1566                     fprintf(stderr, "Video encoding failed\n");
1567                     exit_program(1);
1568                 }
1569                 video_size += ret;
1570                 if(enc->coded_frame && enc->coded_frame->key_frame)
1571                     pkt.flags |= AV_PKT_FLAG_KEY;
1572                 if (ost->logfile && enc->stats_out) {
1573                     fprintf(ost->logfile, "%s", enc->stats_out);
1574                 }
1575                 break;
1576             default:
1577                 ret=-1;
1578             }
1579
1580             if (ret <= 0)
1581                 break;
1582             pkt.data = bit_buffer;
1583             pkt.size = ret;
1584             if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1585                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1586             write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1587         }
1588     }
1589 }
1590
1591 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1592 static int output_packet(InputStream *ist, int ist_index,
1593                          OutputStream *ost_table, int nb_ostreams,
1594                          const AVPacket *pkt)
1595 {
1596     AVFormatContext *os;
1597     OutputStream *ost;
1598     int ret, i;
1599     int got_output;
1600     AVFrame picture;
1601     void *buffer_to_free = NULL;
1602     static unsigned int samples_size= 0;
1603     AVSubtitle subtitle, *subtitle_to_free;
1604     int64_t pkt_pts = AV_NOPTS_VALUE;
1605 #if CONFIG_AVFILTER
1606     int frame_available;
1607 #endif
1608     float quality;
1609
1610     AVPacket avpkt;
1611     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1612
1613     if(ist->next_pts == AV_NOPTS_VALUE)
1614         ist->next_pts= ist->pts;
1615
1616     if (pkt == NULL) {
1617         /* EOF handling */
1618         av_init_packet(&avpkt);
1619         avpkt.data = NULL;
1620         avpkt.size = 0;
1621         goto handle_eof;
1622     } else {
1623         avpkt = *pkt;
1624     }
1625
1626     if(pkt->dts != AV_NOPTS_VALUE)
1627         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1628     if(pkt->pts != AV_NOPTS_VALUE)
1629         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1630
1631     //while we have more to decode or while the decoder did output something on EOF
1632     while (avpkt.size > 0 || (!pkt && got_output)) {
1633         uint8_t *data_buf, *decoded_data_buf;
1634         int data_size, decoded_data_size;
1635     handle_eof:
1636         ist->pts= ist->next_pts;
1637
1638         if(avpkt.size && avpkt.size != pkt->size &&
1639            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1640             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1641             ist->showed_multi_packet_warning=1;
1642         }
1643
1644         /* decode the packet if needed */
1645         decoded_data_buf = NULL; /* fail safe */
1646         decoded_data_size= 0;
1647         data_buf  = avpkt.data;
1648         data_size = avpkt.size;
1649         subtitle_to_free = NULL;
1650         if (ist->decoding_needed) {
1651             switch(ist->st->codec->codec_type) {
1652             case AVMEDIA_TYPE_AUDIO:{
1653                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1654                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1655                     av_free(samples);
1656                     samples= av_malloc(samples_size);
1657                 }
1658                 decoded_data_size= samples_size;
1659                     /* XXX: could avoid copy if PCM 16 bits with same
1660                        endianness as CPU */
1661                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1662                                             &avpkt);
1663                 if (ret < 0)
1664                     return ret;
1665                 avpkt.data += ret;
1666                 avpkt.size -= ret;
1667                 data_size   = ret;
1668                 got_output  = decoded_data_size > 0;
1669                 /* Some bug in mpeg audio decoder gives */
1670                 /* decoded_data_size < 0, it seems they are overflows */
1671                 if (!got_output) {
1672                     /* no audio frame */
1673                     continue;
1674                 }
1675                 decoded_data_buf = (uint8_t *)samples;
1676                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1677                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1678                 break;}
1679             case AVMEDIA_TYPE_VIDEO:
1680                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1681                     /* XXX: allocate picture correctly */
1682                     avcodec_get_frame_defaults(&picture);
1683                     avpkt.pts = pkt_pts;
1684                     avpkt.dts = ist->pts;
1685                     pkt_pts = AV_NOPTS_VALUE;
1686
1687                     ret = avcodec_decode_video2(ist->st->codec,
1688                                                 &picture, &got_output, &avpkt);
1689                     quality = same_quant ? picture.quality : 0;
1690                     if (ret < 0)
1691                         return ret;
1692                     if (!got_output) {
1693                         /* no picture yet */
1694                         goto discard_packet;
1695                     }
1696                     ist->next_pts = ist->pts = picture.best_effort_timestamp;
1697                     if (ist->st->codec->time_base.num != 0) {
1698                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1699                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1700                                           ist->st->codec->time_base.num * ticks) /
1701                             ist->st->codec->time_base.den;
1702                     }
1703                     avpkt.size = 0;
1704                     buffer_to_free = NULL;
1705                     pre_process_video_frame(ist, (AVPicture *)&picture, &buffer_to_free);
1706                     break;
1707             case AVMEDIA_TYPE_SUBTITLE:
1708                 ret = avcodec_decode_subtitle2(ist->st->codec,
1709                                                &subtitle, &got_output, &avpkt);
1710                 if (ret < 0)
1711                     return ret;
1712                 if (!got_output) {
1713                     goto discard_packet;
1714                 }
1715                 subtitle_to_free = &subtitle;
1716                 avpkt.size = 0;
1717                 break;
1718             default:
1719                 return -1;
1720             }
1721         } else {
1722             switch(ist->st->codec->codec_type) {
1723             case AVMEDIA_TYPE_AUDIO:
1724                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1725                     ist->st->codec->sample_rate;
1726                 break;
1727             case AVMEDIA_TYPE_VIDEO:
1728                 if (ist->st->codec->time_base.num != 0) {
1729                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1730                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1731                                       ist->st->codec->time_base.num * ticks) /
1732                         ist->st->codec->time_base.den;
1733                 }
1734                 break;
1735             }
1736             avpkt.size = 0;
1737         }
1738
1739         // preprocess audio (volume)
1740         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1741             if (audio_volume != 256) {
1742                 short *volp;
1743                 volp = samples;
1744                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1745                     int v = ((*volp) * audio_volume + 128) >> 8;
1746                     *volp++ = av_clip_int16(v);
1747                 }
1748             }
1749         }
1750
1751         /* frame rate emulation */
1752         if (input_files[ist->file_index].rate_emu) {
1753             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1754             int64_t now = av_gettime() - ist->start;
1755             if (pts > now)
1756                 usleep(pts - now);
1757         }
1758         /* if output time reached then transcode raw format,
1759            encode packets and output them */
1760         for (i = 0; i < nb_ostreams; i++) {
1761             OutputFile *of = &output_files[ost_table[i].file_index];
1762             int frame_size;
1763
1764             ost = &ost_table[i];
1765             if (ost->source_index != ist_index)
1766                 continue;
1767
1768             if (of->start_time && ist->pts < of->start_time)
1769                 continue;
1770
1771             if (of->recording_time != INT64_MAX &&
1772                 av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1773                               (AVRational){1, 1000000}) >= 0) {
1774                 ost->is_past_recording_time = 1;
1775                 continue;
1776             }
1777
1778 #if CONFIG_AVFILTER
1779             if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1780                 ost->input_video_filter) {
1781                 if (!picture.sample_aspect_ratio.num)
1782                     picture.sample_aspect_ratio = ist->st->sample_aspect_ratio;
1783                 picture.pts = ist->pts;
1784
1785                 av_vsrc_buffer_add_frame(ost->input_video_filter, &picture, AV_VSRC_BUF_FLAG_OVERWRITE);
1786             }
1787             frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1788                 !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1789             while (frame_available) {
1790                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter) {
1791                     AVRational ist_pts_tb = ost->output_video_filter->inputs[0]->time_base;
1792                     if (av_buffersink_get_buffer_ref(ost->output_video_filter, &ost->picref, 0) < 0)
1793                         goto cont;
1794                     if (ost->picref) {
1795                         avfilter_fill_frame_from_video_buffer_ref(&picture, ost->picref);
1796                         ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1797                     }
1798                 }
1799 #endif
1800                 os = output_files[ost->file_index].ctx;
1801
1802                 /* set the input output pts pairs */
1803                 //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
1804
1805                 if (ost->encoding_needed) {
1806                     av_assert0(ist->decoding_needed);
1807                     switch(ost->st->codec->codec_type) {
1808                     case AVMEDIA_TYPE_AUDIO:
1809                         do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1810                         break;
1811                     case AVMEDIA_TYPE_VIDEO:
1812 #if CONFIG_AVFILTER
1813                         if (ost->picref->video && !ost->frame_aspect_ratio)
1814                             ost->st->codec->sample_aspect_ratio = ost->picref->video->sample_aspect_ratio;
1815 #endif
1816                         do_video_out(os, ost, ist, &picture, &frame_size,
1817                                         same_quant ? quality : ost->st->codec->global_quality);
1818                         if (vstats_filename && frame_size)
1819                             do_video_stats(os, ost, frame_size);
1820                         break;
1821                     case AVMEDIA_TYPE_SUBTITLE:
1822                         do_subtitle_out(os, ost, ist, &subtitle,
1823                                         pkt->pts);
1824                         break;
1825                     default:
1826                         abort();
1827                     }
1828                 } else {
1829                     AVFrame avframe; //FIXME/XXX remove this
1830                     AVPicture pict;
1831                     AVPacket opkt;
1832                     int64_t ost_tb_start_time= av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1833                     av_init_packet(&opkt);
1834
1835                     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1836 #if !CONFIG_AVFILTER
1837                         continue;
1838 #else
1839                         goto cont;
1840 #endif
1841
1842                     /* no reencoding needed : output the packet directly */
1843                     /* force the input stream PTS */
1844
1845                     avcodec_get_frame_defaults(&avframe);
1846                     ost->st->codec->coded_frame= &avframe;
1847                     avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1848
1849                     if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1850                         audio_size += data_size;
1851                     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1852                         video_size += data_size;
1853                         ost->sync_opts++;
1854                     }
1855
1856                     opkt.stream_index= ost->index;
1857                     if(pkt->pts != AV_NOPTS_VALUE)
1858                         opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1859                     else
1860                         opkt.pts= AV_NOPTS_VALUE;
1861
1862                     if (pkt->dts == AV_NOPTS_VALUE)
1863                         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1864                     else
1865                         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1866                     opkt.dts -= ost_tb_start_time;
1867
1868                     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1869                     opkt.flags= pkt->flags;
1870
1871                     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1872                     if(   ost->st->codec->codec_id != CODEC_ID_H264
1873                        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1874                        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1875                        ) {
1876                         if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1877                             opkt.destruct= av_destruct_packet;
1878                     } else {
1879                         opkt.data = data_buf;
1880                         opkt.size = data_size;
1881                     }
1882
1883                     if (os->oformat->flags & AVFMT_RAWPICTURE) {
1884                         /* store AVPicture in AVPacket, as expected by the output format */
1885                         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1886                         opkt.data = (uint8_t *)&pict;
1887                         opkt.size = sizeof(AVPicture);
1888                         opkt.flags |= AV_PKT_FLAG_KEY;
1889                     }
1890                     write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1891                     ost->st->codec->frame_number++;
1892                     ost->frame_number++;
1893                     av_free_packet(&opkt);
1894                 }
1895 #if CONFIG_AVFILTER
1896                 cont:
1897                 frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1898                                    ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1899                 if (ost->picref)
1900                     avfilter_unref_buffer(ost->picref);
1901             }
1902 #endif
1903             }
1904
1905         av_free(buffer_to_free);
1906         /* XXX: allocate the subtitles in the codec ? */
1907         if (subtitle_to_free) {
1908             avsubtitle_free(subtitle_to_free);
1909             subtitle_to_free = NULL;
1910         }
1911     }
1912  discard_packet:
1913
1914     return 0;
1915 }
1916
1917 static void print_sdp(OutputFile *output_files, int n)
1918 {
1919     char sdp[2048];
1920     int i;
1921     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
1922
1923     if (!avc)
1924         exit_program(1);
1925     for (i = 0; i < n; i++)
1926         avc[i] = output_files[i].ctx;
1927
1928     av_sdp_create(avc, n, sdp, sizeof(sdp));
1929     printf("SDP:\n%s\n", sdp);
1930     fflush(stdout);
1931     av_freep(&avc);
1932 }
1933
1934 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
1935                              char *error, int error_len)
1936 {
1937     int i;
1938     InputStream *ist = &input_streams[ist_index];
1939     if (ist->decoding_needed) {
1940         AVCodec *codec = ist->dec;
1941         if (!codec) {
1942             snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d.%d",
1943                     ist->st->codec->codec_id, ist->file_index, ist->st->index);
1944             return AVERROR(EINVAL);
1945         }
1946
1947         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
1948             snprintf(error, error_len, "Error while opening decoder for input stream #%d.%d",
1949                     ist->file_index, ist->st->index);
1950             return AVERROR(EINVAL);
1951         }
1952         assert_codec_experimental(ist->st->codec, 0);
1953         assert_avoptions(ist->opts);
1954     }
1955
1956     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;
1957     ist->next_pts = AV_NOPTS_VALUE;
1958     ist->is_start = 1;
1959
1960     return 0;
1961 }
1962
1963 static int transcode_init(OutputFile *output_files,
1964                           int nb_output_files,
1965                           InputFile *input_files,
1966                           int nb_input_files)
1967 {
1968     int ret = 0, i, j, k;
1969     AVFormatContext *os;
1970     AVCodecContext *codec, *icodec;
1971     OutputStream *ost;
1972     InputStream *ist;
1973     char error[1024];
1974     int want_sdp = 1;
1975
1976     /* init framerate emulation */
1977     for (i = 0; i < nb_input_files; i++) {
1978         InputFile *ifile = &input_files[i];
1979         if (ifile->rate_emu)
1980             for (j = 0; j < ifile->nb_streams; j++)
1981                 input_streams[j + ifile->ist_index].start = av_gettime();
1982     }
1983
1984     /* output stream init */
1985     for(i=0;i<nb_output_files;i++) {
1986         os = output_files[i].ctx;
1987         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1988             av_dump_format(os, i, os->filename, 1);
1989             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
1990             return AVERROR(EINVAL);
1991         }
1992     }
1993
1994     /* for each output stream, we compute the right encoding parameters */
1995     for (i = 0; i < nb_output_streams; i++) {
1996         ost = &output_streams[i];
1997         os = output_files[ost->file_index].ctx;
1998         ist = &input_streams[ost->source_index];
1999
2000         codec = ost->st->codec;
2001         icodec = ist->st->codec;
2002
2003         ost->st->disposition = ist->st->disposition;
2004         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2005         codec->chroma_sample_location = icodec->chroma_sample_location;
2006
2007         if (ost->st->stream_copy) {
2008             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2009
2010             if (extra_size > INT_MAX) {
2011                 return AVERROR(EINVAL);
2012             }
2013
2014             /* if stream_copy is selected, no need to decode or encode */
2015             codec->codec_id = icodec->codec_id;
2016             codec->codec_type = icodec->codec_type;
2017
2018             if(!codec->codec_tag){
2019                 if(   !os->oformat->codec_tag
2020                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2021                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2022                     codec->codec_tag = icodec->codec_tag;
2023             }
2024
2025             codec->bit_rate = icodec->bit_rate;
2026             codec->rc_max_rate    = icodec->rc_max_rate;
2027             codec->rc_buffer_size = icodec->rc_buffer_size;
2028             codec->extradata= av_mallocz(extra_size);
2029             if (!codec->extradata) {
2030                 return AVERROR(ENOMEM);
2031             }
2032             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2033             codec->extradata_size= icodec->extradata_size;
2034
2035             codec->time_base = ist->st->time_base;
2036             if(!strcmp(os->oformat->name, "avi")) {
2037                 if(!copy_tb && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base) && av_q2d(ist->st->time_base) < 1.0/500){
2038                     codec->time_base = icodec->time_base;
2039                     codec->time_base.num *= icodec->ticks_per_frame;
2040                     codec->time_base.den *= 2;
2041                 }
2042             } else if(!(os->oformat->flags & AVFMT_VARIABLE_FPS)) {
2043                 if(!copy_tb && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base) && av_q2d(ist->st->time_base) < 1.0/500){
2044                     codec->time_base = icodec->time_base;
2045                     codec->time_base.num *= icodec->ticks_per_frame;
2046                 }
2047             }
2048             av_reduce(&codec->time_base.num, &codec->time_base.den,
2049                         codec->time_base.num, codec->time_base.den, INT_MAX);
2050
2051             switch(codec->codec_type) {
2052             case AVMEDIA_TYPE_AUDIO:
2053                 if(audio_volume != 256) {
2054                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2055                     exit_program(1);
2056                 }
2057                 codec->channel_layout = icodec->channel_layout;
2058                 codec->sample_rate = icodec->sample_rate;
2059                 codec->channels = icodec->channels;
2060                 codec->frame_size = icodec->frame_size;
2061                 codec->audio_service_type = icodec->audio_service_type;
2062                 codec->block_align= icodec->block_align;
2063                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2064                     codec->block_align= 0;
2065                 if(codec->codec_id == CODEC_ID_AC3)
2066                     codec->block_align= 0;
2067                 break;
2068             case AVMEDIA_TYPE_VIDEO:
2069                 codec->pix_fmt = icodec->pix_fmt;
2070                 codec->width = icodec->width;
2071                 codec->height = icodec->height;
2072                 codec->has_b_frames = icodec->has_b_frames;
2073                 if (!codec->sample_aspect_ratio.num) {
2074                     codec->sample_aspect_ratio =
2075                     ost->st->sample_aspect_ratio =
2076                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2077                         ist->st->codec->sample_aspect_ratio.num ?
2078                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2079                 }
2080                 break;
2081             case AVMEDIA_TYPE_SUBTITLE:
2082                 codec->width = icodec->width;
2083                 codec->height = icodec->height;
2084                 break;
2085             case AVMEDIA_TYPE_DATA:
2086                 break;
2087             default:
2088                 abort();
2089             }
2090         } else {
2091             if (!ost->enc)
2092                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2093             switch(codec->codec_type) {
2094             case AVMEDIA_TYPE_AUDIO:
2095                 ost->fifo= av_fifo_alloc(1024);
2096                 if (!ost->fifo) {
2097                     return AVERROR(ENOMEM);
2098                 }
2099                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2100                 if (!codec->sample_rate) {
2101                     codec->sample_rate = icodec->sample_rate;
2102                 }
2103                 choose_sample_rate(ost->st, ost->enc);
2104                 codec->time_base = (AVRational){1, codec->sample_rate};
2105                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2106                     codec->sample_fmt = icodec->sample_fmt;
2107                 choose_sample_fmt(ost->st, ost->enc);
2108                 if (!codec->channels) {
2109                     codec->channels = icodec->channels;
2110                     codec->channel_layout = icodec->channel_layout;
2111                 }
2112                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2113                     codec->channel_layout = 0;
2114                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2115                 icodec->request_channels = codec->channels;
2116                 ist->decoding_needed = 1;
2117                 ost->encoding_needed = 1;
2118                 ost->resample_sample_fmt  = icodec->sample_fmt;
2119                 ost->resample_sample_rate = icodec->sample_rate;
2120                 ost->resample_channels    = icodec->channels;
2121                 break;
2122             case AVMEDIA_TYPE_VIDEO:
2123                 if (codec->pix_fmt == PIX_FMT_NONE)
2124                     codec->pix_fmt = icodec->pix_fmt;
2125                 choose_pixel_fmt(ost->st, ost->enc);
2126
2127                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2128                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2129                     exit_program(1);
2130                 }
2131
2132                 if (!codec->width || !codec->height) {
2133                     codec->width  = icodec->width;
2134                     codec->height = icodec->height;
2135                 }
2136
2137                 ost->video_resample = codec->width   != icodec->width  ||
2138                                       codec->height  != icodec->height ||
2139                                       codec->pix_fmt != icodec->pix_fmt;
2140                 if (ost->video_resample) {
2141                     codec->bits_per_raw_sample= frame_bits_per_raw_sample;
2142                 }
2143
2144                 ost->resample_height = icodec->height;
2145                 ost->resample_width  = icodec->width;
2146                 ost->resample_pix_fmt= icodec->pix_fmt;
2147                 ost->encoding_needed = 1;
2148                 ist->decoding_needed = 1;
2149
2150                 if (!ost->frame_rate.num)
2151                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2152                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2153                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2154                     ost->frame_rate = ost->enc->supported_framerates[idx];
2155                 }
2156                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2157                 if(   av_q2d(codec->time_base) < 0.001 && video_sync_method
2158                    && (video_sync_method==1 || (video_sync_method<0 && !(os->oformat->flags & AVFMT_VARIABLE_FPS)))){
2159                     av_log(os, AV_LOG_WARNING, "Frame rate very high for a muxer not effciciently supporting it.\n"
2160                                                "Please consider specifiying a lower framerate, a different muxer or -vsync 2\n");
2161                 }
2162
2163 #if CONFIG_AVFILTER
2164                 if (configure_video_filters(ist, ost)) {
2165                     fprintf(stderr, "Error opening filters!\n");
2166                     exit(1);
2167                 }
2168 #endif
2169                 break;
2170             case AVMEDIA_TYPE_SUBTITLE:
2171                 ost->encoding_needed = 1;
2172                 ist->decoding_needed = 1;
2173                 break;
2174             default:
2175                 abort();
2176                 break;
2177             }
2178             /* two pass mode */
2179             if (ost->encoding_needed && codec->codec_id != CODEC_ID_H264 &&
2180                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2181                 char logfilename[1024];
2182                 FILE *f;
2183
2184                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2185                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2186                          i);
2187                 if (codec->flags & CODEC_FLAG_PASS1) {
2188                     f = fopen(logfilename, "wb");
2189                     if (!f) {
2190                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2191                         exit_program(1);
2192                     }
2193                     ost->logfile = f;
2194                 } else {
2195                     char  *logbuffer;
2196                     size_t logbuffer_size;
2197                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2198                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2199                         exit_program(1);
2200                     }
2201                     codec->stats_in = logbuffer;
2202                 }
2203             }
2204         }
2205         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2206             /* maximum video buffer size is 6-bytes per pixel, plus DPX header size */
2207             int size= codec->width * codec->height;
2208             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 1664);
2209         }
2210     }
2211
2212     if (!bit_buffer)
2213         bit_buffer = av_malloc(bit_buffer_size);
2214     if (!bit_buffer) {
2215         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2216                 bit_buffer_size);
2217         return AVERROR(ENOMEM);
2218     }
2219
2220     /* open each encoder */
2221     for (i = 0; i < nb_output_streams; i++) {
2222         ost = &output_streams[i];
2223         if (ost->encoding_needed) {
2224             AVCodec *codec = ost->enc;
2225             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2226             if (!codec) {
2227                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2228                          ost->st->codec->codec_id, ost->file_index, ost->index);
2229                 ret = AVERROR(EINVAL);
2230                 goto dump_format;
2231             }
2232             if (dec->subtitle_header) {
2233                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2234                 if (!ost->st->codec->subtitle_header) {
2235                     ret = AVERROR(ENOMEM);
2236                     goto dump_format;
2237                 }
2238                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2239                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2240             }
2241             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2242                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2243                         ost->file_index, ost->index);
2244                 ret = AVERROR(EINVAL);
2245                 goto dump_format;
2246             }
2247             assert_codec_experimental(ost->st->codec, 1);
2248             assert_avoptions(ost->opts);
2249             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2250                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2251                                              "It takes bits/s as argument, not kbits/s\n");
2252             extra_size += ost->st->codec->extradata_size;
2253
2254             if (ost->st->codec->me_threshold)
2255                 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2256         }
2257     }
2258
2259     /* init input streams */
2260     for (i = 0; i < nb_input_streams; i++)
2261         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2262             goto dump_format;
2263
2264     /* discard unused programs */
2265     for (i = 0; i < nb_input_files; i++) {
2266         InputFile *ifile = &input_files[i];
2267         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2268             AVProgram *p = ifile->ctx->programs[j];
2269             int discard  = AVDISCARD_ALL;
2270
2271             for (k = 0; k < p->nb_stream_indexes; k++)
2272                 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2273                     discard = AVDISCARD_DEFAULT;
2274                     break;
2275                 }
2276             p->discard = discard;
2277         }
2278     }
2279
2280     /* open files and write file headers */
2281     for (i = 0; i < nb_output_files; i++) {
2282         os = output_files[i].ctx;
2283         if (avformat_write_header(os, &output_files[i].opts) < 0) {
2284             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2285             ret = AVERROR(EINVAL);
2286             goto dump_format;
2287         }
2288 //        assert_avoptions(output_files[i].opts);
2289         if (strcmp(os->oformat->name, "rtp")) {
2290             want_sdp = 0;
2291         }
2292     }
2293
2294  dump_format:
2295     /* dump the file output parameters - cannot be done before in case
2296        of stream copy */
2297     for(i=0;i<nb_output_files;i++) {
2298         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2299     }
2300
2301     /* dump the stream mapping */
2302     if (verbose >= 0) {
2303         fprintf(stderr, "Stream mapping:\n");
2304         for (i = 0; i < nb_output_streams;i ++) {
2305             ost = &output_streams[i];
2306             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2307                     input_streams[ost->source_index].file_index,
2308                     input_streams[ost->source_index].st->index,
2309                     ost->file_index,
2310                     ost->index);
2311             if (ost->sync_ist != &input_streams[ost->source_index])
2312                 fprintf(stderr, " [sync #%d.%d]",
2313                         ost->sync_ist->file_index,
2314                         ost->sync_ist->st->index);
2315             if (ost->st->stream_copy)
2316                 fprintf(stderr, " (copy)");
2317             else
2318                 fprintf(stderr, " (%s -> %s)", input_streams[ost->source_index].dec ?
2319                         input_streams[ost->source_index].dec->name : "?",
2320                         ost->enc ? ost->enc->name : "?");
2321             fprintf(stderr, "\n");
2322         }
2323     }
2324
2325     if (ret) {
2326         fprintf(stderr, "%s\n", error);
2327         return ret;
2328     }
2329
2330     if (want_sdp) {
2331         print_sdp(output_files, nb_output_files);
2332     }
2333
2334     return 0;
2335 }
2336
2337 /*
2338  * The following code is the main loop of the file converter
2339  */
2340 static int transcode(OutputFile *output_files,
2341                      int nb_output_files,
2342                      InputFile *input_files,
2343                      int nb_input_files)
2344 {
2345     int ret, i;
2346     AVFormatContext *is, *os;
2347     OutputStream *ost;
2348     InputStream *ist;
2349     uint8_t *no_packet;
2350     int no_packet_count=0;
2351     int64_t timer_start;
2352     int key;
2353
2354     if (!(no_packet = av_mallocz(nb_input_files)))
2355         exit_program(1);
2356
2357     ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2358     if (ret < 0)
2359         goto fail;
2360
2361     if (!using_stdin) {
2362         if(verbose >= 0)
2363             fprintf(stderr, "Press [q] to stop, [?] for help\n");
2364         avio_set_interrupt_cb(decode_interrupt_cb);
2365     }
2366     term_init();
2367
2368     timer_start = av_gettime();
2369
2370     for(; received_sigterm == 0;) {
2371         int file_index, ist_index;
2372         AVPacket pkt;
2373         int64_t ipts_min;
2374         double opts_min;
2375
2376         ipts_min = INT64_MAX;
2377         opts_min= 1e100;
2378         /* if 'q' pressed, exits */
2379         if (!using_stdin) {
2380             if (q_pressed)
2381                 break;
2382             /* read_key() returns 0 on EOF */
2383             key = read_key();
2384             if (key == 'q')
2385                 break;
2386             if (key == '+') verbose++;
2387             if (key == '-') verbose--;
2388             if (key == 's') qp_hist     ^= 1;
2389             if (key == 'h'){
2390                 if (do_hex_dump){
2391                     do_hex_dump = do_pkt_dump = 0;
2392                 } else if(do_pkt_dump){
2393                     do_hex_dump = 1;
2394                 } else
2395                     do_pkt_dump = 1;
2396                 av_log_set_level(AV_LOG_DEBUG);
2397             }
2398             if (key == 'd' || key == 'D'){
2399                 int debug=0;
2400                 if(key == 'D') {
2401                     debug = input_streams[0].st->codec->debug<<1;
2402                     if(!debug) debug = 1;
2403                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2404                         debug += debug;
2405                 }else
2406                     scanf("%d", &debug);
2407                 for(i=0;i<nb_input_streams;i++) {
2408                     input_streams[i].st->codec->debug = debug;
2409                 }
2410                 for(i=0;i<nb_output_streams;i++) {
2411                     ost = &output_streams[i];
2412                     ost->st->codec->debug = debug;
2413                 }
2414                 if(debug) av_log_set_level(AV_LOG_DEBUG);
2415                 fprintf(stderr,"debug=%d\n", debug);
2416             }
2417             if (key == '?'){
2418                 fprintf(stderr, "key    function\n"
2419                                 "?      show this help\n"
2420                                 "+      increase verbosity\n"
2421                                 "-      decrease verbosity\n"
2422                                 "D      cycle through available debug modes\n"
2423                                 "h      dump packets/hex press to cycle through the 3 states\n"
2424                                 "q      quit\n"
2425                                 "s      Show QP histogram\n"
2426                 );
2427             }
2428         }
2429
2430         /* select the stream that we must read now by looking at the
2431            smallest output pts */
2432         file_index = -1;
2433         for (i = 0; i < nb_output_streams; i++) {
2434             OutputFile *of;
2435             int64_t ipts;
2436             double  opts;
2437             ost = &output_streams[i];
2438             of = &output_files[ost->file_index];
2439             os = output_files[ost->file_index].ctx;
2440             ist = &input_streams[ost->source_index];
2441             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2442                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2443                 continue;
2444             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2445             ipts = ist->pts;
2446             if (!input_files[ist->file_index].eof_reached){
2447                 if(ipts < ipts_min) {
2448                     ipts_min = ipts;
2449                     if(input_sync ) file_index = ist->file_index;
2450                 }
2451                 if(opts < opts_min) {
2452                     opts_min = opts;
2453                     if(!input_sync) file_index = ist->file_index;
2454                 }
2455             }
2456             if (ost->frame_number >= ost->max_frames) {
2457                 int j;
2458                 for (j = of->ost_index; j < of->ctx->nb_streams; j++)
2459                     output_streams[j].is_past_recording_time = 1;
2460                 continue;
2461             }
2462         }
2463         /* if none, if is finished */
2464         if (file_index < 0) {
2465             if(no_packet_count){
2466                 no_packet_count=0;
2467                 memset(no_packet, 0, nb_input_files);
2468                 usleep(10000);
2469                 continue;
2470             }
2471             break;
2472         }
2473
2474         /* read a frame from it and output it in the fifo */
2475         is = input_files[file_index].ctx;
2476         ret= av_read_frame(is, &pkt);
2477         if(ret == AVERROR(EAGAIN)){
2478             no_packet[file_index]=1;
2479             no_packet_count++;
2480             continue;
2481         }
2482         if (ret < 0) {
2483             input_files[file_index].eof_reached = 1;
2484             if (opt_shortest)
2485                 break;
2486             else
2487                 continue;
2488         }
2489
2490         no_packet_count=0;
2491         memset(no_packet, 0, nb_input_files);
2492
2493         if (do_pkt_dump) {
2494             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2495                              is->streams[pkt.stream_index]);
2496         }
2497         /* the following test is needed in case new streams appear
2498            dynamically in stream : we ignore them */
2499         if (pkt.stream_index >= input_files[file_index].nb_streams)
2500             goto discard_packet;
2501         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2502         ist = &input_streams[ist_index];
2503         if (ist->discard)
2504             goto discard_packet;
2505
2506         if (pkt.dts != AV_NOPTS_VALUE)
2507             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2508         if (pkt.pts != AV_NOPTS_VALUE)
2509             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2510
2511         if(pkt.pts != AV_NOPTS_VALUE)
2512             pkt.pts *= ist->ts_scale;
2513         if(pkt.dts != AV_NOPTS_VALUE)
2514             pkt.dts *= ist->ts_scale;
2515
2516 //        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);
2517         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2518             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2519             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2520             int64_t delta= pkt_dts - ist->next_pts;
2521             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2522                 input_files[ist->file_index].ts_offset -= delta;
2523                 if (verbose > 2)
2524                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2525                             delta, input_files[ist->file_index].ts_offset);
2526                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2527                 if(pkt.pts != AV_NOPTS_VALUE)
2528                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2529             }
2530         }
2531
2532         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2533         if (output_packet(ist, ist_index, output_streams, nb_output_streams, &pkt) < 0) {
2534
2535             if (verbose >= 0)
2536                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2537                         ist->file_index, ist->st->index);
2538             if (exit_on_error)
2539                 exit_program(1);
2540             av_free_packet(&pkt);
2541             continue;
2542         }
2543
2544     discard_packet:
2545         av_free_packet(&pkt);
2546
2547         /* dump report by using the output first video and audio streams */
2548         print_report(output_files, output_streams, nb_output_streams, 0, timer_start);
2549     }
2550
2551     /* at the end of stream, we must flush the decoder buffers */
2552     for (i = 0; i < nb_input_streams; i++) {
2553         ist = &input_streams[i];
2554         if (ist->decoding_needed) {
2555             output_packet(ist, i, output_streams, nb_output_streams, NULL);
2556         }
2557     }
2558     flush_encoders(output_streams, nb_output_streams);
2559
2560     term_exit();
2561
2562     /* write the trailer if needed and close file */
2563     for(i=0;i<nb_output_files;i++) {
2564         os = output_files[i].ctx;
2565         av_write_trailer(os);
2566     }
2567
2568     /* dump report by using the first video and audio streams */
2569     print_report(output_files, output_streams, nb_output_streams, 1, timer_start);
2570
2571     /* close each encoder */
2572     for (i = 0; i < nb_output_streams; i++) {
2573         ost = &output_streams[i];
2574         if (ost->encoding_needed) {
2575             av_freep(&ost->st->codec->stats_in);
2576             avcodec_close(ost->st->codec);
2577         }
2578 #if CONFIG_AVFILTER
2579         avfilter_graph_free(&ost->graph);
2580 #endif
2581     }
2582
2583     /* close each decoder */
2584     for (i = 0; i < nb_input_streams; i++) {
2585         ist = &input_streams[i];
2586         if (ist->decoding_needed) {
2587             avcodec_close(ist->st->codec);
2588         }
2589     }
2590
2591     /* finished ! */
2592     ret = 0;
2593
2594  fail:
2595     av_freep(&bit_buffer);
2596     av_freep(&no_packet);
2597
2598     if (output_streams) {
2599         for (i = 0; i < nb_output_streams; i++) {
2600             ost = &output_streams[i];
2601             if (ost) {
2602                 if (ost->st->stream_copy)
2603                     av_freep(&ost->st->codec->extradata);
2604                 if (ost->logfile) {
2605                     fclose(ost->logfile);
2606                     ost->logfile = NULL;
2607                 }
2608                 av_fifo_free(ost->fifo); /* works even if fifo is not
2609                                              initialized but set to zero */
2610                 av_freep(&ost->st->codec->subtitle_header);
2611                 av_free(ost->resample_frame.data[0]);
2612                 av_free(ost->forced_kf_pts);
2613                 if (ost->video_resample)
2614                     sws_freeContext(ost->img_resample_ctx);
2615                 if (ost->resample)
2616                     audio_resample_close(ost->resample);
2617                 if (ost->reformat_ctx)
2618                     av_audio_convert_free(ost->reformat_ctx);
2619                 av_dict_free(&ost->opts);
2620             }
2621         }
2622     }
2623     return ret;
2624 }
2625
2626 static int opt_verbose(const char *opt, const char *arg)
2627 {
2628     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2629     return 0;
2630 }
2631
2632 static double parse_frame_aspect_ratio(const char *arg)
2633 {
2634     int x = 0, y = 0;
2635     double ar = 0;
2636     const char *p;
2637     char *end;
2638
2639     p = strchr(arg, ':');
2640     if (p) {
2641         x = strtol(arg, &end, 10);
2642         if (end == p)
2643             y = strtol(end+1, &end, 10);
2644         if (x > 0 && y > 0)
2645             ar = (double)x / (double)y;
2646     } else
2647         ar = strtod(arg, NULL);
2648
2649     if (!ar) {
2650         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2651         exit_program(1);
2652     }
2653     return ar;
2654 }
2655
2656 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2657 {
2658     return parse_option(o, "codec:a", arg, options);
2659 }
2660
2661 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2662 {
2663     return parse_option(o, "codec:v", arg, options);
2664 }
2665
2666 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2667 {
2668     return parse_option(o, "codec:s", arg, options);
2669 }
2670
2671 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2672 {
2673     return parse_option(o, "codec:d", arg, options);
2674 }
2675
2676 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2677 {
2678     StreamMap *m = NULL;
2679     int i, negative = 0, file_idx;
2680     int sync_file_idx = -1, sync_stream_idx;
2681     char *p, *sync;
2682     char *map;
2683
2684     if (*arg == '-') {
2685         negative = 1;
2686         arg++;
2687     }
2688     map = av_strdup(arg);
2689
2690     /* parse sync stream first, just pick first matching stream */
2691     if (sync = strchr(map, ',')) {
2692         *sync = 0;
2693         sync_file_idx = strtol(sync + 1, &sync, 0);
2694         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2695             av_log(NULL, AV_LOG_ERROR, "Invalid sync file index: %d.\n", sync_file_idx);
2696             exit_program(1);
2697         }
2698         if (*sync)
2699             sync++;
2700         for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2701             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2702                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2703                 sync_stream_idx = i;
2704                 break;
2705             }
2706         if (i == input_files[sync_file_idx].nb_streams) {
2707             av_log(NULL, AV_LOG_ERROR, "Sync stream specification in map %s does not "
2708                                        "match any streams.\n", arg);
2709             exit_program(1);
2710         }
2711     }
2712
2713
2714     file_idx = strtol(map, &p, 0);
2715     if (file_idx >= nb_input_files || file_idx < 0) {
2716         av_log(NULL, AV_LOG_ERROR, "Invalid input file index: %d.\n", file_idx);
2717         exit_program(1);
2718     }
2719     if (negative)
2720         /* disable some already defined maps */
2721         for (i = 0; i < o->nb_stream_maps; i++) {
2722             m = &o->stream_maps[i];
2723             if (check_stream_specifier(input_files[m->file_index].ctx,
2724                                        input_files[m->file_index].ctx->streams[m->stream_index],
2725                                        *p == ':' ? p + 1 : p) > 0)
2726                 m->disabled = 1;
2727         }
2728     else
2729         for (i = 0; i < input_files[file_idx].nb_streams; i++) {
2730             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2731                         *p == ':' ? p + 1 : p) <= 0)
2732                 continue;
2733             o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
2734                                         &o->nb_stream_maps, o->nb_stream_maps + 1);
2735             m = &o->stream_maps[o->nb_stream_maps - 1];
2736
2737             m->file_index   = file_idx;
2738             m->stream_index = i;
2739
2740             if (sync_file_idx >= 0) {
2741                 m->sync_file_index   = sync_file_idx;
2742                 m->sync_stream_index = sync_stream_idx;
2743             } else {
2744                 m->sync_file_index   = file_idx;
2745                 m->sync_stream_index = i;
2746             }
2747         }
2748
2749     if (!m) {
2750         av_log(NULL, AV_LOG_ERROR, "Stream map '%s' matches no streams.\n", arg);
2751         exit_program(1);
2752     }
2753
2754     av_freep(&map);
2755     return 0;
2756 }
2757
2758 static void parse_meta_type(char *arg, char *type, int *index)
2759 {
2760     if (*arg) {
2761         *type = *arg;
2762         switch (*arg) {
2763         case 'g':
2764             break;
2765         case 's':
2766         case 'c':
2767         case 'p':
2768             if (*(++arg) == ':')
2769                 *index = strtol(++arg, NULL, 0);
2770             break;
2771         default:
2772             fprintf(stderr, "Invalid metadata type %c.\n", *arg);
2773             exit_program(1);
2774         }
2775     } else
2776         *type = 'g';
2777 }
2778
2779 static int opt_map_metadata(OptionsContext *o, const char *opt, const char *arg)
2780 {
2781     MetadataMap *m, *m1;
2782     char *p;
2783
2784     o->meta_data_maps = grow_array(o->meta_data_maps, sizeof(*o->meta_data_maps),
2785                                    &o->nb_meta_data_maps, o->nb_meta_data_maps + 1);
2786
2787     m = &o->meta_data_maps[o->nb_meta_data_maps - 1][1];
2788     m->file = strtol(arg, &p, 0);
2789     parse_meta_type(*p ? p + 1 : p, &m->type, &m->index);
2790
2791     m1 = &o->meta_data_maps[o->nb_meta_data_maps - 1][0];
2792     if (p = strchr(opt, ':'))
2793         parse_meta_type(p + 1, &m1->type, &m1->index);
2794     else
2795         m1->type = 'g';
2796
2797     if (m->type == 'g' || m1->type == 'g')
2798         o->metadata_global_manual = 1;
2799     if (m->type == 's' || m1->type == 's')
2800         o->metadata_streams_manual = 1;
2801     if (m->type == 'c' || m1->type == 'c')
2802         o->metadata_chapters_manual = 1;
2803
2804     return 0;
2805 }
2806
2807 static enum CodecID find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
2808 {
2809     const char *codec_string = encoder ? "encoder" : "decoder";
2810     AVCodec *codec;
2811
2812     if(!name)
2813         return CODEC_ID_NONE;
2814     codec = encoder ?
2815         avcodec_find_encoder_by_name(name) :
2816         avcodec_find_decoder_by_name(name);
2817     if(!codec) {
2818         av_log(NULL, AV_LOG_ERROR, "Unknown %s '%s'\n", codec_string, name);
2819         exit_program(1);
2820     }
2821     if(codec->type != type) {
2822         av_log(NULL, AV_LOG_ERROR, "Invalid %s type '%s'\n", codec_string, name);
2823         exit_program(1);
2824     }
2825     return codec->id;
2826 }
2827
2828 static AVCodec *choose_codec(OptionsContext *o, AVFormatContext *s, AVStream *st, enum AVMediaType type)
2829 {
2830     char *codec_name = NULL;
2831
2832     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
2833
2834     if (!codec_name) {
2835         if (s->oformat) {
2836             st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename, NULL, type);
2837             return avcodec_find_encoder(st->codec->codec_id);
2838         }
2839     } else if (!strcmp(codec_name, "copy"))
2840         st->stream_copy = 1;
2841     else {
2842         st->codec->codec_id = find_codec_or_die(codec_name, type, s->iformat == NULL);
2843         return s->oformat ? avcodec_find_encoder_by_name(codec_name) :
2844                             avcodec_find_decoder_by_name(codec_name);
2845     }
2846
2847     return NULL;
2848 }
2849
2850 /**
2851  * Add all the streams from the given input file to the global
2852  * list of input streams.
2853  */
2854 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
2855 {
2856     int i, rfps, rfps_base;
2857
2858     for (i = 0; i < ic->nb_streams; i++) {
2859         AVStream *st = ic->streams[i];
2860         AVCodecContext *dec = st->codec;
2861         InputStream *ist;
2862         double scale = 1.0;
2863
2864         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
2865         ist = &input_streams[nb_input_streams - 1];
2866         ist->st = st;
2867         ist->file_index = nb_input_files;
2868         ist->discard = 1;
2869         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
2870
2871         MATCH_PER_STREAM_OPT(ts_scale, dbl, scale, ic, st);
2872         ist->ts_scale = scale;
2873
2874         ist->dec = choose_codec(o, ic, st, dec->codec_type);
2875         if (!ist->dec)
2876             ist->dec = avcodec_find_decoder(dec->codec_id);
2877
2878         switch (dec->codec_type) {
2879         case AVMEDIA_TYPE_AUDIO:
2880             if(!ist->dec)
2881                 ist->dec = avcodec_find_decoder(dec->codec_id);
2882             if(o->audio_disable)
2883                 st->discard= AVDISCARD_ALL;
2884             break;
2885         case AVMEDIA_TYPE_VIDEO:
2886             if(!ist->dec)
2887                 ist->dec = avcodec_find_decoder(dec->codec_id);
2888             rfps      = ic->streams[i]->r_frame_rate.num;
2889             rfps_base = ic->streams[i]->r_frame_rate.den;
2890             if (dec->lowres) {
2891                 dec->flags |= CODEC_FLAG_EMU_EDGE;
2892             }
2893
2894             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
2895
2896                 if (verbose >= 0)
2897                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
2898                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
2899
2900                     (float)rfps / rfps_base, rfps, rfps_base);
2901             }
2902
2903             if (o->video_disable)
2904                 st->discard= AVDISCARD_ALL;
2905             else if(video_discard)
2906                 st->discard= video_discard;
2907             break;
2908         case AVMEDIA_TYPE_DATA:
2909             break;
2910         case AVMEDIA_TYPE_SUBTITLE:
2911             if(!ist->dec)
2912                 ist->dec = avcodec_find_decoder(dec->codec_id);
2913             if(o->subtitle_disable)
2914                 st->discard = AVDISCARD_ALL;
2915             break;
2916         case AVMEDIA_TYPE_ATTACHMENT:
2917         case AVMEDIA_TYPE_UNKNOWN:
2918             break;
2919         default:
2920             abort();
2921         }
2922     }
2923 }
2924
2925 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
2926 {
2927     AVFormatContext *ic;
2928     AVInputFormat *file_iformat = NULL;
2929     int err, i, ret;
2930     int64_t timestamp;
2931     uint8_t buf[128];
2932     AVDictionary **opts;
2933     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
2934
2935     if (o->format) {
2936         if (!(file_iformat = av_find_input_format(o->format))) {
2937             fprintf(stderr, "Unknown input format: '%s'\n", o->format);
2938             exit_program(1);
2939         }
2940     }
2941
2942     if (!strcmp(filename, "-"))
2943         filename = "pipe:";
2944
2945     using_stdin |= !strncmp(filename, "pipe:", 5) ||
2946                     !strcmp(filename, "/dev/stdin");
2947
2948     /* get default parameters from command line */
2949     ic = avformat_alloc_context();
2950     if (!ic) {
2951         print_error(filename, AVERROR(ENOMEM));
2952         exit_program(1);
2953     }
2954     if (o->nb_audio_sample_rate) {
2955         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
2956         av_dict_set(&format_opts, "sample_rate", buf, 0);
2957     }
2958     if (o->nb_audio_channels) {
2959         snprintf(buf, sizeof(buf), "%d", o->audio_channels[o->nb_audio_channels - 1].u.i);
2960         av_dict_set(&format_opts, "channels", buf, 0);
2961     }
2962     if (o->nb_frame_rates) {
2963         av_dict_set(&format_opts, "framerate", o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
2964     }
2965     if (o->nb_frame_sizes) {
2966         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
2967     }
2968     if (o->nb_frame_pix_fmts)
2969         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
2970
2971     ic->flags |= AVFMT_FLAG_NONBLOCK;
2972
2973     /* open the input file with generic libav function */
2974     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
2975     if (err < 0) {
2976         print_error(filename, err);
2977         exit_program(1);
2978     }
2979     assert_avoptions(format_opts);
2980
2981     /* apply forced codec ids */
2982     for (i = 0; i < ic->nb_streams; i++)
2983         choose_codec(o, ic, ic->streams[i], ic->streams[i]->codec->codec_type);
2984
2985     /* Set AVCodecContext options for avformat_find_stream_info */
2986     opts = setup_find_stream_info_opts(ic, codec_opts);
2987     orig_nb_streams = ic->nb_streams;
2988
2989     /* If not enough info to get the stream parameters, we decode the
2990        first frames to get it. (used in mpeg case for example) */
2991     ret = avformat_find_stream_info(ic, opts);
2992     if (ret < 0 && verbose >= 0) {
2993         fprintf(stderr, "%s: could not find codec parameters\n", filename);
2994         av_close_input_file(ic);
2995         exit_program(1);
2996     }
2997
2998     timestamp = o->start_time;
2999     /* add the stream start time */
3000     if (ic->start_time != AV_NOPTS_VALUE)
3001         timestamp += ic->start_time;
3002
3003     /* if seeking requested, we execute it */
3004     if (o->start_time != 0) {
3005         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3006         if (ret < 0) {
3007             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3008                     filename, (double)timestamp / AV_TIME_BASE);
3009         }
3010     }
3011
3012     /* update the current parameters so that they match the one of the input stream */
3013     add_input_streams(o, ic);
3014
3015     /* dump the file content */
3016     if (verbose >= 0)
3017         av_dump_format(ic, nb_input_files, filename, 0);
3018
3019     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3020     input_files[nb_input_files - 1].ctx        = ic;
3021     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3022     input_files[nb_input_files - 1].ts_offset  = o->input_ts_offset - (copy_ts ? 0 : timestamp);
3023     input_files[nb_input_files - 1].nb_streams = ic->nb_streams;
3024
3025     for (i = 0; i < orig_nb_streams; i++)
3026         av_dict_free(&opts[i]);
3027     av_freep(&opts);
3028
3029     reset_options(o);
3030     return 0;
3031 }
3032
3033 static void parse_forced_key_frames(char *kf, OutputStream *ost,
3034                                     AVCodecContext *avctx)
3035 {
3036     char *p;
3037     int n = 1, i;
3038     int64_t t;
3039
3040     for (p = kf; *p; p++)
3041         if (*p == ',')
3042             n++;
3043     ost->forced_kf_count = n;
3044     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
3045     if (!ost->forced_kf_pts) {
3046         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
3047         exit_program(1);
3048     }
3049     for (i = 0; i < n; i++) {
3050         p = i ? strchr(p, ',') + 1 : kf;
3051         t = parse_time_or_die("force_key_frames", p, 1);
3052         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
3053     }
3054 }
3055
3056 static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
3057 {
3058     OutputStream *ost;
3059     AVStream *st = av_new_stream(oc, oc->nb_streams < o->nb_streamid_map ? o->streamid_map[oc->nb_streams] : 0);
3060     int idx      = oc->nb_streams - 1;
3061     int64_t max_frames = INT64_MAX;
3062     char *bsf = NULL, *next, *codec_tag = NULL;
3063     AVBitStreamFilterContext *bsfc, *bsfc_prev = NULL;
3064     double qscale = -1;
3065
3066     if (!st) {
3067         av_log(NULL, AV_LOG_ERROR, "Could not alloc stream.\n");
3068         exit_program(1);
3069     }
3070
3071     output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
3072                                 nb_output_streams + 1);
3073     ost = &output_streams[nb_output_streams - 1];
3074     ost->file_index = nb_output_files;
3075     ost->index = idx;
3076     ost->st    = st;
3077     st->codec->codec_type = type;
3078     ost->enc = choose_codec(o, oc, st, type);
3079     if (ost->enc) {
3080         ost->opts  = filter_codec_opts(codec_opts, ost->enc->id, oc, st);
3081     }
3082
3083     avcodec_get_context_defaults3(st->codec, ost->enc);
3084     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
3085
3086     MATCH_PER_STREAM_OPT(max_frames, i64, max_frames, oc, st);
3087     ost->max_frames = max_frames;
3088
3089     MATCH_PER_STREAM_OPT(bitstream_filters, str, bsf, oc, st);
3090     while (bsf) {
3091         if (next = strchr(bsf, ','))
3092             *next++ = 0;
3093         if (!(bsfc = av_bitstream_filter_init(bsf))) {
3094             av_log(NULL, AV_LOG_ERROR, "Unknown bitstream filter %s\n", bsf);
3095             exit_program(1);
3096         }
3097         if (bsfc_prev)
3098             bsfc_prev->next = bsfc;
3099         else
3100             ost->bitstream_filters = bsfc;
3101
3102         bsfc_prev = bsfc;
3103         bsf       = next;
3104     }
3105
3106     MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, oc, st);
3107     if (codec_tag) {
3108         uint32_t tag = strtol(codec_tag, &next, 0);
3109         if (*next)
3110             tag = AV_RL32(codec_tag);
3111         st->codec->codec_tag = tag;
3112     }
3113
3114     MATCH_PER_STREAM_OPT(qscale, dbl, qscale, oc, st);
3115     if (qscale >= 0 || same_quant) {
3116         st->codec->flags |= CODEC_FLAG_QSCALE;
3117         st->codec->global_quality = FF_QP2LAMBDA * qscale;
3118     }
3119
3120     ost->sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
3121     return ost;
3122 }
3123
3124 static void parse_matrix_coeffs(uint16_t *dest, const char *str)
3125 {
3126     int i;
3127     const char *p = str;
3128     for(i = 0;; i++) {
3129         dest[i] = atoi(p);
3130         if(i == 63)
3131             break;
3132         p = strchr(p, ',');
3133         if(!p) {
3134             fprintf(stderr, "Syntax error in matrix \"%s\" at coeff %d\n", str, i);
3135             exit_program(1);
3136         }
3137         p++;
3138     }
3139 }
3140
3141 static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc)
3142 {
3143     AVStream *st;
3144     OutputStream *ost;
3145     AVCodecContext *video_enc;
3146
3147     ost = new_output_stream(o, oc, AVMEDIA_TYPE_VIDEO);
3148     st  = ost->st;
3149     video_enc = st->codec;
3150
3151     if(oc->oformat->flags & AVFMT_GLOBALHEADER) {
3152         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3153     }
3154
3155     if (!st->stream_copy) {
3156         const char *p = NULL;
3157         char *forced_key_frames = NULL, *frame_rate = NULL, *frame_size = NULL;
3158         char *frame_aspect_ratio = NULL, *frame_pix_fmt = NULL;
3159         char *intra_matrix = NULL, *inter_matrix = NULL, *filters = NULL;
3160         int i, force_fps = 0, top_field_first = -1;
3161
3162         MATCH_PER_STREAM_OPT(frame_rates, str, frame_rate, oc, st);
3163         if (frame_rate && av_parse_video_rate(&ost->frame_rate, frame_rate) < 0) {
3164             av_log(NULL, AV_LOG_ERROR, "Invalid framerate value: %s\n", frame_rate);
3165             exit_program(1);
3166         }
3167
3168         MATCH_PER_STREAM_OPT(frame_sizes, str, frame_size, oc, st);
3169         if (frame_size && av_parse_video_size(&video_enc->width, &video_enc->height, frame_size) < 0) {
3170             av_log(NULL, AV_LOG_ERROR, "Invalid frame size: %s.\n", frame_size);
3171             exit_program(1);
3172         }
3173
3174         MATCH_PER_STREAM_OPT(frame_aspect_ratios, str, frame_aspect_ratio, oc, st);
3175         if (frame_aspect_ratio)
3176             ost->frame_aspect_ratio = parse_frame_aspect_ratio(frame_aspect_ratio);
3177
3178         MATCH_PER_STREAM_OPT(frame_pix_fmts, str, frame_pix_fmt, oc, st);
3179         if (frame_pix_fmt && (video_enc->pix_fmt = av_get_pix_fmt(frame_pix_fmt)) == PIX_FMT_NONE) {
3180             av_log(NULL, AV_LOG_ERROR, "Unknown pixel format requested: %s.\n", frame_pix_fmt);
3181             exit_program(1);
3182         }
3183         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3184
3185         MATCH_PER_STREAM_OPT(intra_matrices, str, intra_matrix, oc, st);
3186         if (intra_matrix) {
3187             if (!(video_enc->intra_matrix = av_mallocz(sizeof(*video_enc->intra_matrix) * 64))) {
3188                 av_log(NULL, AV_LOG_ERROR, "Could not allocate memory for intra matrix.\n");
3189                 exit_program(1);
3190             }
3191             parse_matrix_coeffs(video_enc->intra_matrix, intra_matrix);
3192         }
3193         MATCH_PER_STREAM_OPT(inter_matrices, str, inter_matrix, oc, st);
3194         if (inter_matrix) {
3195             if (!(video_enc->inter_matrix = av_mallocz(sizeof(*video_enc->inter_matrix) * 64))) {
3196                 av_log(NULL, AV_LOG_ERROR, "Could not allocate memory for inter matrix.\n");
3197                 exit_program(1);
3198             }
3199             parse_matrix_coeffs(video_enc->inter_matrix, inter_matrix);
3200         }
3201
3202         MATCH_PER_STREAM_OPT(rc_overrides, str, p, oc, st);
3203         for(i=0; p; i++){
3204             int start, end, q;
3205             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3206             if(e!=3){
3207                 fprintf(stderr, "error parsing rc_override\n");
3208                 exit_program(1);
3209             }
3210             video_enc->rc_override=
3211                 av_realloc(video_enc->rc_override,
3212                            sizeof(RcOverride)*(i+1));
3213             video_enc->rc_override[i].start_frame= start;
3214             video_enc->rc_override[i].end_frame  = end;
3215             if(q>0){
3216                 video_enc->rc_override[i].qscale= q;
3217                 video_enc->rc_override[i].quality_factor= 1.0;
3218             }
3219             else{
3220                 video_enc->rc_override[i].qscale= 0;
3221                 video_enc->rc_override[i].quality_factor= -q/100.0;
3222             }
3223             p= strchr(p, '/');
3224             if(p) p++;
3225         }
3226         video_enc->rc_override_count=i;
3227         if (!video_enc->rc_initial_buffer_occupancy)
3228             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3229         video_enc->intra_dc_precision= intra_dc_precision - 8;
3230
3231         /* two pass mode */
3232         if (do_pass) {
3233             if (do_pass == 1) {
3234                 video_enc->flags |= CODEC_FLAG_PASS1;
3235             } else {
3236                 video_enc->flags |= CODEC_FLAG_PASS2;
3237             }
3238         }
3239
3240         MATCH_PER_STREAM_OPT(forced_key_frames, str, forced_key_frames, oc, st);
3241         if (forced_key_frames)
3242             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3243
3244         MATCH_PER_STREAM_OPT(force_fps, i, force_fps, oc, st);
3245         ost->force_fps = force_fps;
3246
3247         MATCH_PER_STREAM_OPT(top_field_first, i, top_field_first, oc, st);
3248         ost->top_field_first = top_field_first;
3249
3250 #if CONFIG_AVFILTER
3251         MATCH_PER_STREAM_OPT(filters, str, filters, oc, st);
3252         if (filters)
3253             ost->avfilter = av_strdup(filters);
3254 #endif
3255     }
3256
3257     return ost;
3258 }
3259
3260 static OutputStream *new_audio_stream(OptionsContext *o, AVFormatContext *oc)
3261 {
3262     AVStream *st;
3263     OutputStream *ost;
3264     AVCodecContext *audio_enc;
3265
3266     ost = new_output_stream(o, oc, AVMEDIA_TYPE_AUDIO);
3267     st  = ost->st;
3268
3269     audio_enc = st->codec;
3270     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3271
3272     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3273         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3274     }
3275     if (!st->stream_copy) {
3276         char *sample_fmt = NULL;
3277
3278         MATCH_PER_STREAM_OPT(audio_channels, i, audio_enc->channels, oc, st);
3279
3280         MATCH_PER_STREAM_OPT(sample_fmts, str, sample_fmt, oc, st);
3281         if (sample_fmt &&
3282             (audio_enc->sample_fmt = av_get_sample_fmt(sample_fmt)) == AV_SAMPLE_FMT_NONE) {
3283             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", sample_fmt);
3284             exit_program(1);
3285         }
3286
3287         MATCH_PER_STREAM_OPT(audio_sample_rate, i, audio_enc->sample_rate, oc, st);
3288     }
3289
3290     return ost;
3291 }
3292
3293 static OutputStream *new_data_stream(OptionsContext *o, AVFormatContext *oc)
3294 {
3295     AVStream *st;
3296     OutputStream *ost;
3297     AVCodecContext *data_enc;
3298
3299     ost = new_output_stream(o, oc, AVMEDIA_TYPE_DATA);
3300     st  = ost->st;
3301     data_enc = st->codec;
3302     if (!st->stream_copy) {
3303         fprintf(stderr, "Data stream encoding not supported yet (only streamcopy)\n");
3304         exit_program(1);
3305     }
3306
3307     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3308         data_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3309     }
3310
3311     return ost;
3312 }
3313
3314 static OutputStream *new_subtitle_stream(OptionsContext *o, AVFormatContext *oc)
3315 {
3316     AVStream *st;
3317     OutputStream *ost;
3318     AVCodecContext *subtitle_enc;
3319
3320     ost = new_output_stream(o, oc, AVMEDIA_TYPE_SUBTITLE);
3321     st  = ost->st;
3322     subtitle_enc = st->codec;
3323
3324     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3325
3326     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3327         subtitle_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3328     }
3329
3330     return ost;
3331 }
3332
3333 /* arg format is "output-stream-index:streamid-value". */
3334 static int opt_streamid(OptionsContext *o, const char *opt, const char *arg)
3335 {
3336     int idx;
3337     char *p;
3338     char idx_str[16];
3339
3340     av_strlcpy(idx_str, arg, sizeof(idx_str));
3341     p = strchr(idx_str, ':');
3342     if (!p) {
3343         fprintf(stderr,
3344                 "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3345                 arg, opt);
3346         exit_program(1);
3347     }
3348     *p++ = '\0';
3349     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, MAX_STREAMS-1);
3350     o->streamid_map = grow_array(o->streamid_map, sizeof(*o->streamid_map), &o->nb_streamid_map, idx+1);
3351     o->streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3352     return 0;
3353 }
3354
3355 static int copy_chapters(InputFile *ifile, OutputFile *ofile, int copy_metadata)
3356 {
3357     AVFormatContext *is = ifile->ctx;
3358     AVFormatContext *os = ofile->ctx;
3359     int i;
3360
3361     for (i = 0; i < is->nb_chapters; i++) {
3362         AVChapter *in_ch = is->chapters[i], *out_ch;
3363         int64_t ts_off   = av_rescale_q(ofile->start_time - ifile->ts_offset,
3364                                       AV_TIME_BASE_Q, in_ch->time_base);
3365         int64_t rt       = (ofile->recording_time == INT64_MAX) ? INT64_MAX :
3366                            av_rescale_q(ofile->recording_time, AV_TIME_BASE_Q, in_ch->time_base);
3367
3368
3369         if (in_ch->end < ts_off)
3370             continue;
3371         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
3372             break;
3373
3374         out_ch = av_mallocz(sizeof(AVChapter));
3375         if (!out_ch)
3376             return AVERROR(ENOMEM);
3377
3378         out_ch->id        = in_ch->id;
3379         out_ch->time_base = in_ch->time_base;
3380         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
3381         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
3382
3383         if (copy_metadata)
3384             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
3385
3386         os->nb_chapters++;
3387         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
3388         if (!os->chapters)
3389             return AVERROR(ENOMEM);
3390         os->chapters[os->nb_chapters - 1] = out_ch;
3391     }
3392     return 0;
3393 }
3394
3395 static int read_ffserver_streams(OptionsContext *o, AVFormatContext *s, const char *filename)
3396 {
3397     int i, err;
3398     AVFormatContext *ic = NULL;
3399
3400     err = avformat_open_input(&ic, filename, NULL, NULL);
3401     if (err < 0)
3402         return err;
3403     /* copy stream format */
3404     for(i=0;i<ic->nb_streams;i++) {
3405         AVStream *st;
3406         OutputStream *ost;
3407         AVCodec *codec;
3408
3409         codec = avcodec_find_encoder(ic->streams[i]->codec->codec_id);
3410         ost   = new_output_stream(o, s, codec->type);
3411         st    = ost->st;
3412
3413         // FIXME: a more elegant solution is needed
3414         memcpy(st, ic->streams[i], sizeof(AVStream));
3415         st->info = av_malloc(sizeof(*st->info));
3416         memcpy(st->info, ic->streams[i]->info, sizeof(*st->info));
3417         avcodec_copy_context(st->codec, ic->streams[i]->codec);
3418
3419         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && !st->stream_copy)
3420             choose_sample_fmt(st, codec);
3421         else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && !st->stream_copy)
3422             choose_pixel_fmt(st, codec);
3423     }
3424
3425     av_close_input_file(ic);
3426     return 0;
3427 }
3428
3429 static void opt_output_file(void *optctx, const char *filename)
3430 {
3431     OptionsContext *o = optctx;
3432     AVFormatContext *oc;
3433     int i, err;
3434     AVOutputFormat *file_oformat;
3435     OutputStream *ost;
3436     InputStream  *ist;
3437
3438     if (!strcmp(filename, "-"))
3439         filename = "pipe:";
3440
3441     err = avformat_alloc_output_context2(&oc, NULL, o->format, filename);
3442     if (!oc) {
3443         print_error(filename, err);
3444         exit_program(1);
3445     }
3446
3447     file_oformat= oc->oformat;
3448
3449     if (!strcmp(file_oformat->name, "ffm") &&
3450         av_strstart(filename, "http:", NULL)) {
3451         /* special case for files sent to ffserver: we get the stream
3452            parameters from ffserver */
3453         int err = read_ffserver_streams(o, oc, filename);
3454         if (err < 0) {
3455             print_error(filename, err);
3456             exit_program(1);
3457         }
3458     } else if (!o->nb_stream_maps) {
3459         /* pick the "best" stream of each type */
3460 #define NEW_STREAM(type, index)\
3461         if (index >= 0) {\
3462             ost = new_ ## type ## _stream(o, oc);\
3463             ost->source_index = index;\
3464             ost->sync_ist     = &input_streams[index];\
3465             input_streams[index].discard = 0;\
3466         }
3467
3468         /* video: highest resolution */
3469         if (!o->video_disable && oc->oformat->video_codec != CODEC_ID_NONE) {
3470             int area = 0, idx = -1;
3471             for (i = 0; i < nb_input_streams; i++) {
3472                 ist = &input_streams[i];
3473                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3474                     ist->st->codec->width * ist->st->codec->height > area) {
3475                     area = ist->st->codec->width * ist->st->codec->height;
3476                     idx = i;
3477                 }
3478             }
3479             NEW_STREAM(video, idx);
3480         }
3481
3482         /* audio: most channels */
3483         if (!o->audio_disable && oc->oformat->audio_codec != CODEC_ID_NONE) {
3484             int channels = 0, idx = -1;
3485             for (i = 0; i < nb_input_streams; i++) {
3486                 ist = &input_streams[i];
3487                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
3488                     ist->st->codec->channels > channels) {
3489                     channels = ist->st->codec->channels;
3490                     idx = i;
3491                 }
3492             }
3493             NEW_STREAM(audio, idx);
3494         }
3495
3496         /* subtitles: pick first */
3497         if (!o->subtitle_disable && oc->oformat->subtitle_codec != CODEC_ID_NONE) {
3498             for (i = 0; i < nb_input_streams; i++)
3499                 if (input_streams[i].st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3500                     NEW_STREAM(subtitle, i);
3501                     break;
3502                 }
3503         }
3504         /* do something with data? */
3505     } else {
3506         for (i = 0; i < o->nb_stream_maps; i++) {
3507             StreamMap *map = &o->stream_maps[i];
3508
3509             if (map->disabled)
3510                 continue;
3511
3512             ist = &input_streams[input_files[map->file_index].ist_index + map->stream_index];
3513             switch (ist->st->codec->codec_type) {
3514             case AVMEDIA_TYPE_VIDEO:    ost = new_video_stream(o, oc);    break;
3515             case AVMEDIA_TYPE_AUDIO:    ost = new_audio_stream(o, oc);    break;
3516             case AVMEDIA_TYPE_SUBTITLE: ost = new_subtitle_stream(o, oc); break;
3517             case AVMEDIA_TYPE_DATA:     ost = new_data_stream(o, oc);     break;
3518             default:
3519                 av_log(NULL, AV_LOG_ERROR, "Cannot map stream #%d.%d - unsupported type.\n",
3520                        map->file_index, map->stream_index);
3521                 exit_program(1);
3522             }
3523
3524             ost->source_index = input_files[map->file_index].ist_index + map->stream_index;
3525             ost->sync_ist = &input_streams[input_files[map->sync_file_index].ist_index +
3526                                            map->sync_stream_index];
3527             ist->discard = 0;
3528         }
3529     }
3530
3531     output_files = grow_array(output_files, sizeof(*output_files), &nb_output_files, nb_output_files + 1);
3532     output_files[nb_output_files - 1].ctx       = oc;
3533     output_files[nb_output_files - 1].ost_index = nb_output_streams - oc->nb_streams;
3534     output_files[nb_output_files - 1].recording_time = o->recording_time;
3535     output_files[nb_output_files - 1].start_time     = o->start_time;
3536     output_files[nb_output_files - 1].limit_filesize = o->limit_filesize;
3537     av_dict_copy(&output_files[nb_output_files - 1].opts, format_opts, 0);
3538
3539     /* check filename in case of an image number is expected */
3540     if (oc->oformat->flags & AVFMT_NEEDNUMBER) {
3541         if (!av_filename_number_test(oc->filename)) {
3542             print_error(oc->filename, AVERROR(EINVAL));
3543             exit_program(1);
3544         }
3545     }
3546
3547     if (!(oc->oformat->flags & AVFMT_NOFILE)) {
3548         /* test if it already exists to avoid loosing precious files */
3549         if (!file_overwrite &&
3550             (strchr(filename, ':') == NULL ||
3551              filename[1] == ':' ||
3552              av_strstart(filename, "file:", NULL))) {
3553             if (avio_check(filename, 0) == 0) {
3554                 if (!using_stdin) {
3555                     fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3556                     fflush(stderr);
3557                     if (!read_yesno()) {
3558                         fprintf(stderr, "Not overwriting - exiting\n");
3559                         exit_program(1);
3560                     }
3561                 }
3562                 else {
3563                     fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
3564                     exit_program(1);
3565                 }
3566             }
3567         }
3568
3569         /* open the file */
3570         if ((err = avio_open(&oc->pb, filename, AVIO_FLAG_WRITE)) < 0) {
3571             print_error(filename, err);
3572             exit_program(1);
3573         }
3574     }
3575
3576     oc->preload   = (int)(o->mux_preload   * AV_TIME_BASE);
3577     oc->max_delay = (int)(o->mux_max_delay * AV_TIME_BASE);
3578
3579     /* copy chapters */
3580     if (o->chapters_input_file >= nb_input_files) {
3581         if (o->chapters_input_file == INT_MAX) {
3582             /* copy chapters from the first input file that has them*/
3583             o->chapters_input_file = -1;
3584             for (i = 0; i < nb_input_files; i++)
3585                 if (input_files[i].ctx->nb_chapters) {
3586                     o->chapters_input_file = i;
3587                     break;
3588                 }
3589         } else {
3590             av_log(NULL, AV_LOG_ERROR, "Invalid input file index %d in chapter mapping.\n",
3591                    o->chapters_input_file);
3592             exit_program(1);
3593         }
3594     }
3595     if (o->chapters_input_file >= 0)
3596         copy_chapters(&input_files[o->chapters_input_file], &output_files[nb_output_files - 1],
3597                       !o->metadata_chapters_manual);
3598
3599     /* copy metadata */
3600     for (i = 0; i < o->nb_meta_data_maps; i++) {
3601         AVFormatContext *files[2];
3602         AVDictionary    **meta[2];
3603         int j;
3604
3605 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
3606         if ((index) < 0 || (index) >= (nb_elems)) {\
3607             av_log(NULL, AV_LOG_ERROR, "Invalid %s index %d while processing metadata maps\n",\
3608                      (desc), (index));\
3609             exit_program(1);\
3610         }
3611
3612         int in_file_index = o->meta_data_maps[i][1].file;
3613         if (in_file_index < 0)
3614             continue;
3615         METADATA_CHECK_INDEX(in_file_index, nb_input_files, "input file")
3616
3617         files[0] = oc;
3618         files[1] = input_files[in_file_index].ctx;
3619
3620         for (j = 0; j < 2; j++) {
3621             MetadataMap *map = &o->meta_data_maps[i][j];
3622
3623             switch (map->type) {
3624             case 'g':
3625                 meta[j] = &files[j]->metadata;
3626                 break;
3627             case 's':
3628                 METADATA_CHECK_INDEX(map->index, files[j]->nb_streams, "stream")
3629                 meta[j] = &files[j]->streams[map->index]->metadata;
3630                 break;
3631             case 'c':
3632                 METADATA_CHECK_INDEX(map->index, files[j]->nb_chapters, "chapter")
3633                 meta[j] = &files[j]->chapters[map->index]->metadata;
3634                 break;