doc: Improve references to external URLs.
[ffmpeg.git] / ffmpeg.c
1 /*
2  * ffmpeg main
3  * Copyright (c) 2000-2003 Fabrice Bellard
4  *
5  * This file is part of Libav.
6  *
7  * Libav 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  * Libav 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 Libav; 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 #if CONFIG_AVFILTER
50 # include "libavfilter/avfilter.h"
51 # include "libavfilter/avfiltergraph.h"
52 # include "libavfilter/vsrc_buffer.h"
53 #endif
54
55 #if HAVE_SYS_RESOURCE_H
56 #include <sys/types.h>
57 #include <sys/time.h>
58 #include <sys/resource.h>
59 #elif HAVE_GETPROCESSTIMES
60 #include <windows.h>
61 #endif
62 #if HAVE_GETPROCESSMEMORYINFO
63 #include <windows.h>
64 #include <psapi.h>
65 #endif
66
67 #if HAVE_SYS_SELECT_H
68 #include <sys/select.h>
69 #endif
70
71 #include <time.h>
72
73 #include "cmdutils.h"
74
75 #include "libavutil/avassert.h"
76
77 const char program_name[] = "ffmpeg";
78 const int program_birth_year = 2000;
79
80 /* select an input stream for an output stream */
81 typedef struct StreamMap {
82     int file_index;
83     int stream_index;
84     int sync_file_index;
85     int sync_stream_index;
86 } StreamMap;
87
88 /**
89  * select an input file for an output file
90  */
91 typedef struct MetadataMap {
92     int  file;      //< file index
93     char type;      //< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
94     int  index;     //< stream/chapter/program number
95 } MetadataMap;
96
97 typedef struct ChapterMap {
98     int in_file;
99     int out_file;
100 } ChapterMap;
101
102 static const OptionDef options[];
103
104 #define MAX_FILES 100
105 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
106
107 #define FFM_PACKET_SIZE 4096 //XXX a duplicate of the line in ffm.h
108
109 static const char *last_asked_format = NULL;
110 static double *ts_scale;
111 static int  nb_ts_scale;
112
113 static AVFormatContext *output_files[MAX_FILES];
114 static AVDictionary *output_opts[MAX_FILES];
115 static int nb_output_files = 0;
116
117 static StreamMap *stream_maps = NULL;
118 static int nb_stream_maps;
119
120 /* first item specifies output metadata, second is input */
121 static MetadataMap (*meta_data_maps)[2] = NULL;
122 static int nb_meta_data_maps;
123 static int metadata_global_autocopy   = 1;
124 static int metadata_streams_autocopy  = 1;
125 static int metadata_chapters_autocopy = 1;
126
127 static ChapterMap *chapter_maps = NULL;
128 static int nb_chapter_maps;
129
130 /* indexed by output file stream index */
131 static int *streamid_map = NULL;
132 static int nb_streamid_map = 0;
133
134 static int frame_width  = 0;
135 static int frame_height = 0;
136 static float frame_aspect_ratio = 0;
137 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
138 static enum AVSampleFormat audio_sample_fmt = AV_SAMPLE_FMT_NONE;
139 static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
140 static AVRational frame_rate;
141 static float video_qscale = 0;
142 static uint16_t *intra_matrix = NULL;
143 static uint16_t *inter_matrix = NULL;
144 static const char *video_rc_override_string=NULL;
145 static int video_disable = 0;
146 static int video_discard = 0;
147 static char *video_codec_name = NULL;
148 static unsigned int video_codec_tag = 0;
149 static char *video_language = NULL;
150 static int same_quality = 0;
151 static int do_deinterlace = 0;
152 static int top_field_first = -1;
153 static int me_threshold = 0;
154 static int intra_dc_precision = 8;
155 static int loop_input = 0;
156 static int loop_output = AVFMT_NOOUTPUTLOOP;
157 static int qp_hist = 0;
158 #if CONFIG_AVFILTER
159 static char *vfilters = NULL;
160 #endif
161
162 static int intra_only = 0;
163 static int audio_sample_rate = 0;
164 #define QSCALE_NONE -99999
165 static float audio_qscale = QSCALE_NONE;
166 static int audio_disable = 0;
167 static int audio_channels = 0;
168 static char  *audio_codec_name = NULL;
169 static unsigned int audio_codec_tag = 0;
170 static char *audio_language = NULL;
171
172 static int subtitle_disable = 0;
173 static char *subtitle_codec_name = NULL;
174 static char *subtitle_language = NULL;
175 static unsigned int subtitle_codec_tag = 0;
176
177 static int data_disable = 0;
178 static char *data_codec_name = NULL;
179 static unsigned int data_codec_tag = 0;
180
181 static float mux_preload= 0.5;
182 static float mux_max_delay= 0.7;
183
184 static int64_t recording_time = INT64_MAX;
185 static int64_t start_time = 0;
186 static int64_t input_ts_offset = 0;
187 static int file_overwrite = 0;
188 static AVDictionary *metadata;
189 static int do_benchmark = 0;
190 static int do_hex_dump = 0;
191 static int do_pkt_dump = 0;
192 static int do_psnr = 0;
193 static int do_pass = 0;
194 static char *pass_logfilename_prefix = NULL;
195 static int audio_stream_copy = 0;
196 static int video_stream_copy = 0;
197 static int subtitle_stream_copy = 0;
198 static int data_stream_copy = 0;
199 static int video_sync_method= -1;
200 static int audio_sync_method= 0;
201 static float audio_drift_threshold= 0.1;
202 static int copy_ts= 0;
203 static int copy_tb;
204 static int opt_shortest = 0;
205 static char *vstats_filename;
206 static FILE *vstats_file;
207 static int opt_programid = 0;
208 static int copy_initial_nonkeyframes = 0;
209
210 static int rate_emu = 0;
211
212 static int audio_volume = 256;
213
214 static int exit_on_error = 0;
215 static int using_stdin = 0;
216 static int verbose = 1;
217 static int thread_count= 1;
218 static int64_t video_size = 0;
219 static int64_t audio_size = 0;
220 static int64_t extra_size = 0;
221 static int nb_frames_dup = 0;
222 static int nb_frames_drop = 0;
223 static int input_sync;
224 static uint64_t limit_filesize = 0;
225 static int force_fps = 0;
226 static char *forced_key_frames = NULL;
227
228 static float dts_delta_threshold = 10;
229
230 static int64_t timer_start;
231
232 static uint8_t *audio_buf;
233 static uint8_t *audio_out;
234 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
235
236 static short *samples;
237
238 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
239 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
240 static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL;
241
242 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
243
244 struct InputStream;
245
246 typedef struct OutputStream {
247     int file_index;          /* file index */
248     int index;               /* stream index in the output file */
249     int source_index;        /* InputStream index */
250     AVStream *st;            /* stream in the output file */
251     int encoding_needed;     /* true if encoding needed for this stream */
252     int frame_number;
253     /* input pts and corresponding output pts
254        for A/V sync */
255     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
256     struct InputStream *sync_ist; /* input stream to sync against */
257     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
258     AVBitStreamFilterContext *bitstream_filters;
259     AVCodec *enc;
260
261     /* video only */
262     int video_resample;
263     AVFrame pict_tmp;      /* temporary image for resampling */
264     struct SwsContext *img_resample_ctx; /* for image resampling */
265     int resample_height;
266     int resample_width;
267     int resample_pix_fmt;
268     AVRational frame_rate;
269
270     float frame_aspect_ratio;
271
272     /* forced key frames */
273     int64_t *forced_kf_pts;
274     int forced_kf_count;
275     int forced_kf_index;
276
277     /* audio only */
278     int audio_resample;
279     ReSampleContext *resample; /* for audio resampling */
280     int resample_sample_fmt;
281     int resample_channels;
282     int resample_sample_rate;
283     int reformat_pair;
284     AVAudioConvert *reformat_ctx;
285     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
286     FILE *logfile;
287
288 #if CONFIG_AVFILTER
289     AVFilterContext *output_video_filter;
290     AVFilterContext *input_video_filter;
291     AVFilterBufferRef *picref;
292     char *avfilter;
293     AVFilterGraph *graph;
294 #endif
295
296    int sws_flags;
297 } OutputStream;
298
299 static OutputStream **output_streams_for_file[MAX_FILES] = { NULL };
300 static int nb_output_streams_for_file[MAX_FILES] = { 0 };
301
302 typedef struct InputStream {
303     int file_index;
304     AVStream *st;
305     int discard;             /* true if stream data should be discarded */
306     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
307     AVCodec *dec;
308
309     int64_t       start;     /* time when read started */
310     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
311                                 is not defined */
312     int64_t       pts;       /* current pts */
313     PtsCorrectionContext pts_ctx;
314     double ts_scale;
315     int is_start;            /* is 1 at the start and after a discontinuity */
316     int showed_multi_packet_warning;
317     int is_past_recording_time;
318 } InputStream;
319
320 typedef struct InputFile {
321     AVFormatContext *ctx;
322     int eof_reached;      /* true if eof reached */
323     int ist_index;        /* index of first stream in ist_table */
324     int buffer_size;      /* current total buffer size */
325     int64_t ts_offset;
326 } InputFile;
327
328 static InputStream *input_streams = NULL;
329 static int         nb_input_streams = 0;
330 static InputFile   *input_files   = NULL;
331 static int         nb_input_files   = 0;
332
333 #if CONFIG_AVFILTER
334
335 static int configure_video_filters(InputStream *ist, OutputStream *ost)
336 {
337     AVFilterContext *last_filter, *filter;
338     /** filter graph containing all filters including input & output */
339     AVCodecContext *codec = ost->st->codec;
340     AVCodecContext *icodec = ist->st->codec;
341     FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
342     AVRational sample_aspect_ratio;
343     char args[255];
344     int ret;
345
346     ost->graph = avfilter_graph_alloc();
347
348     if (ist->st->sample_aspect_ratio.num){
349         sample_aspect_ratio = ist->st->sample_aspect_ratio;
350     }else
351         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
352
353     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
354              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
355              sample_aspect_ratio.num, sample_aspect_ratio.den);
356
357     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
358                                        "src", args, NULL, ost->graph);
359     if (ret < 0)
360         return ret;
361     ret = avfilter_graph_create_filter(&ost->output_video_filter, &ffsink,
362                                        "out", NULL, &ffsink_ctx, ost->graph);
363     if (ret < 0)
364         return ret;
365     last_filter = ost->input_video_filter;
366
367     if (codec->width  != icodec->width || codec->height != icodec->height) {
368         snprintf(args, 255, "%d:%d:flags=0x%X",
369                  codec->width,
370                  codec->height,
371                  ost->sws_flags);
372         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
373                                                 NULL, args, NULL, ost->graph)) < 0)
374             return ret;
375         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
376             return ret;
377         last_filter = filter;
378     }
379
380     snprintf(args, sizeof(args), "flags=0x%X", ost->sws_flags);
381     ost->graph->scale_sws_opts = av_strdup(args);
382
383     if (ost->avfilter) {
384         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
385         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
386
387         outputs->name    = av_strdup("in");
388         outputs->filter_ctx = last_filter;
389         outputs->pad_idx = 0;
390         outputs->next    = NULL;
391
392         inputs->name    = av_strdup("out");
393         inputs->filter_ctx = ost->output_video_filter;
394         inputs->pad_idx = 0;
395         inputs->next    = NULL;
396
397         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, inputs, outputs, NULL)) < 0)
398             return ret;
399         av_freep(&ost->avfilter);
400     } else {
401         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
402             return ret;
403     }
404
405     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
406         return ret;
407
408     codec->width  = ost->output_video_filter->inputs[0]->w;
409     codec->height = ost->output_video_filter->inputs[0]->h;
410     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
411         ost->frame_aspect_ratio ? // overriden by the -aspect cli option
412         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
413         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
414
415     return 0;
416 }
417 #endif /* CONFIG_AVFILTER */
418
419 static void term_exit(void)
420 {
421     av_log(NULL, AV_LOG_QUIET, "");
422 }
423
424 static volatile int received_sigterm = 0;
425 static volatile int received_nb_signals = 0;
426
427 static void
428 sigterm_handler(int sig)
429 {
430     received_sigterm = sig;
431     received_nb_signals++;
432     term_exit();
433 }
434
435 static void term_init(void)
436 {
437     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
438     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
439 #ifdef SIGXCPU
440     signal(SIGXCPU, sigterm_handler);
441 #endif
442 }
443
444 static int decode_interrupt_cb(void)
445 {
446     return received_nb_signals > 1;
447 }
448
449 static int ffmpeg_exit(int ret)
450 {
451     int i;
452
453     /* close files */
454     for(i=0;i<nb_output_files;i++) {
455         AVFormatContext *s = output_files[i];
456         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
457             avio_close(s->pb);
458         avformat_free_context(s);
459         av_free(output_streams_for_file[i]);
460         av_dict_free(&output_opts[i]);
461     }
462     for(i=0;i<nb_input_files;i++) {
463         av_close_input_file(input_files[i].ctx);
464     }
465
466     av_free(intra_matrix);
467     av_free(inter_matrix);
468
469     if (vstats_file)
470         fclose(vstats_file);
471     av_free(vstats_filename);
472
473     av_free(streamid_map);
474     av_free(stream_maps);
475     av_free(meta_data_maps);
476
477     av_freep(&input_streams);
478     av_freep(&input_files);
479
480     av_free(video_codec_name);
481     av_free(audio_codec_name);
482     av_free(subtitle_codec_name);
483     av_free(data_codec_name);
484
485     uninit_opts();
486     av_free(audio_buf);
487     av_free(audio_out);
488     allocated_audio_buf_size= allocated_audio_out_size= 0;
489     av_free(samples);
490
491 #if CONFIG_AVFILTER
492     avfilter_uninit();
493 #endif
494
495     if (received_sigterm) {
496         fprintf(stderr,
497             "Received signal %d: terminating.\n",
498             (int) received_sigterm);
499         exit (255);
500     }
501
502     exit(ret); /* not all OS-es handle main() return value */
503     return ret;
504 }
505
506 static void assert_avoptions(AVDictionary *m)
507 {
508     AVDictionaryEntry *t;
509     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
510         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
511         ffmpeg_exit(1);
512     }
513 }
514
515 /* similar to ff_dynarray_add() and av_fast_realloc() */
516 static void *grow_array(void *array, int elem_size, int *size, int new_size)
517 {
518     if (new_size >= INT_MAX / elem_size) {
519         fprintf(stderr, "Array too big.\n");
520         ffmpeg_exit(1);
521     }
522     if (*size < new_size) {
523         uint8_t *tmp = av_realloc(array, new_size*elem_size);
524         if (!tmp) {
525             fprintf(stderr, "Could not alloc buffer.\n");
526             ffmpeg_exit(1);
527         }
528         memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
529         *size = new_size;
530         return tmp;
531     }
532     return array;
533 }
534
535 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
536 {
537     if(codec && codec->sample_fmts){
538         const enum AVSampleFormat *p= codec->sample_fmts;
539         for(; *p!=-1; p++){
540             if(*p == st->codec->sample_fmt)
541                 break;
542         }
543         if (*p == -1) {
544             av_log(NULL, AV_LOG_WARNING,
545                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
546                    av_get_sample_fmt_name(st->codec->sample_fmt),
547                    codec->name,
548                    av_get_sample_fmt_name(codec->sample_fmts[0]));
549             st->codec->sample_fmt = codec->sample_fmts[0];
550         }
551     }
552 }
553
554 /**
555  * Update the requested input sample format based on the output sample format.
556  * This is currently only used to request float output from decoders which
557  * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
558  * Ideally this will be removed in the future when decoders do not do format
559  * conversion and only output in their native format.
560  */
561 static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
562                               AVCodecContext *enc)
563 {
564     /* if sample formats match or a decoder sample format has already been
565        requested, just return */
566     if (enc->sample_fmt == dec->sample_fmt ||
567         dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
568         return;
569
570     /* if decoder supports more than one output format */
571     if (dec_codec && dec_codec->sample_fmts &&
572         dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
573         dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
574         const enum AVSampleFormat *p;
575         int min_dec = -1, min_inc = -1;
576
577         /* find a matching sample format in the encoder */
578         for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
579             if (*p == enc->sample_fmt) {
580                 dec->request_sample_fmt = *p;
581                 return;
582             } else if (*p > enc->sample_fmt) {
583                 min_inc = FFMIN(min_inc, *p - enc->sample_fmt);
584             } else
585                 min_dec = FFMIN(min_dec, enc->sample_fmt - *p);
586         }
587
588         /* if none match, provide the one that matches quality closest */
589         dec->request_sample_fmt = min_inc > 0 ? enc->sample_fmt + min_inc :
590                                   enc->sample_fmt - min_dec;
591     }
592 }
593
594 static void choose_sample_rate(AVStream *st, AVCodec *codec)
595 {
596     if(codec && codec->supported_samplerates){
597         const int *p= codec->supported_samplerates;
598         int best=0;
599         int best_dist=INT_MAX;
600         for(; *p; p++){
601             int dist= abs(st->codec->sample_rate - *p);
602             if(dist < best_dist){
603                 best_dist= dist;
604                 best= *p;
605             }
606         }
607         if(best_dist){
608             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
609         }
610         st->codec->sample_rate= best;
611     }
612 }
613
614 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
615 {
616     if(codec && codec->pix_fmts){
617         const enum PixelFormat *p= codec->pix_fmts;
618         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
619             if(st->codec->codec_id==CODEC_ID_MJPEG){
620                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
621             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
622                 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};
623             }
624         }
625         for(; *p!=-1; p++){
626             if(*p == st->codec->pix_fmt)
627                 break;
628         }
629         if (*p == -1) {
630             if(st->codec->pix_fmt != PIX_FMT_NONE)
631                 av_log(NULL, AV_LOG_WARNING,
632                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
633                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
634                         codec->name,
635                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
636             st->codec->pix_fmt = codec->pix_fmts[0];
637         }
638     }
639 }
640
641 static OutputStream *new_output_stream(AVFormatContext *oc, int file_idx, AVCodec *codec)
642 {
643     OutputStream *ost;
644     AVStream *st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
645     int idx      = oc->nb_streams - 1;
646
647     if (!st) {
648         av_log(NULL, AV_LOG_ERROR, "Could not alloc stream.\n");
649         ffmpeg_exit(1);
650     }
651
652     output_streams_for_file[file_idx] =
653         grow_array(output_streams_for_file[file_idx],
654                    sizeof(*output_streams_for_file[file_idx]),
655                    &nb_output_streams_for_file[file_idx],
656                    oc->nb_streams);
657     ost = output_streams_for_file[file_idx][idx] =
658         av_mallocz(sizeof(OutputStream));
659     if (!ost) {
660         fprintf(stderr, "Could not alloc output stream\n");
661         ffmpeg_exit(1);
662     }
663     ost->file_index = file_idx;
664     ost->index = idx;
665     ost->st    = st;
666     ost->enc   = codec;
667
668     avcodec_get_context_defaults3(st->codec, codec);
669
670     ost->sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
671     return ost;
672 }
673
674 static int read_ffserver_streams(AVFormatContext *s, const char *filename)
675 {
676     int i, err;
677     AVFormatContext *ic = NULL;
678     int nopts = 0;
679
680     err = avformat_open_input(&ic, filename, NULL, NULL);
681     if (err < 0)
682         return err;
683     /* copy stream format */
684     for(i=0;i<ic->nb_streams;i++) {
685         AVStream *st;
686         OutputStream *ost;
687         AVCodec *codec;
688
689         codec = avcodec_find_encoder(ic->streams[i]->codec->codec_id);
690         ost   = new_output_stream(s, nb_output_files, codec);
691         st    = ost->st;
692
693         // FIXME: a more elegant solution is needed
694         memcpy(st, ic->streams[i], sizeof(AVStream));
695         st->info = NULL;
696         avcodec_copy_context(st->codec, ic->streams[i]->codec);
697
698         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
699             if (audio_stream_copy) {
700                 st->stream_copy = 1;
701             } else
702                 choose_sample_fmt(st, codec);
703         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
704             if (video_stream_copy) {
705                 st->stream_copy = 1;
706             } else
707                 choose_pixel_fmt(st, codec);
708         }
709
710         if(st->codec->flags & CODEC_FLAG_BITEXACT)
711             nopts = 1;
712     }
713
714     av_close_input_file(ic);
715     return 0;
716 }
717
718 static double
719 get_sync_ipts(const OutputStream *ost)
720 {
721     const InputStream *ist = ost->sync_ist;
722     return (double)(ist->pts - start_time)/AV_TIME_BASE;
723 }
724
725 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
726     int ret;
727
728     while(bsfc){
729         AVPacket new_pkt= *pkt;
730         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
731                                           &new_pkt.data, &new_pkt.size,
732                                           pkt->data, pkt->size,
733                                           pkt->flags & AV_PKT_FLAG_KEY);
734         if(a>0){
735             av_free_packet(pkt);
736             new_pkt.destruct= av_destruct_packet;
737         } else if(a<0){
738             fprintf(stderr, "%s failed for stream %d, codec %s",
739                     bsfc->filter->name, pkt->stream_index,
740                     avctx->codec ? avctx->codec->name : "copy");
741             print_error("", a);
742             if (exit_on_error)
743                 ffmpeg_exit(1);
744         }
745         *pkt= new_pkt;
746
747         bsfc= bsfc->next;
748     }
749
750     ret= av_interleaved_write_frame(s, pkt);
751     if(ret < 0){
752         print_error("av_interleaved_write_frame()", ret);
753         ffmpeg_exit(1);
754     }
755 }
756
757 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
758
759 static void do_audio_out(AVFormatContext *s,
760                          OutputStream *ost,
761                          InputStream *ist,
762                          unsigned char *buf, int size)
763 {
764     uint8_t *buftmp;
765     int64_t audio_out_size, audio_buf_size;
766     int64_t allocated_for_size= size;
767
768     int size_out, frame_bytes, ret, resample_changed;
769     AVCodecContext *enc= ost->st->codec;
770     AVCodecContext *dec= ist->st->codec;
771     int osize = av_get_bytes_per_sample(enc->sample_fmt);
772     int isize = av_get_bytes_per_sample(dec->sample_fmt);
773     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
774
775 need_realloc:
776     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
777     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
778     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
779     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
780     audio_buf_size*= osize*enc->channels;
781
782     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
783     if(coded_bps > 8*osize)
784         audio_out_size= audio_out_size * coded_bps / (8*osize);
785     audio_out_size += FF_MIN_BUFFER_SIZE;
786
787     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
788         fprintf(stderr, "Buffer sizes too large\n");
789         ffmpeg_exit(1);
790     }
791
792     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
793     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
794     if (!audio_buf || !audio_out){
795         fprintf(stderr, "Out of memory in do_audio_out\n");
796         ffmpeg_exit(1);
797     }
798
799     if (enc->channels != dec->channels || enc->sample_rate != dec->sample_rate)
800         ost->audio_resample = 1;
801
802     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
803                        ost->resample_channels    != dec->channels   ||
804                        ost->resample_sample_rate != dec->sample_rate;
805
806     if ((ost->audio_resample && !ost->resample) || resample_changed) {
807         if (resample_changed) {
808             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",
809                    ist->file_index, ist->st->index,
810                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
811                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
812             ost->resample_sample_fmt  = dec->sample_fmt;
813             ost->resample_channels    = dec->channels;
814             ost->resample_sample_rate = dec->sample_rate;
815             if (ost->resample)
816                 audio_resample_close(ost->resample);
817         }
818         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
819         if (audio_sync_method <= 1 &&
820             ost->resample_sample_fmt  == enc->sample_fmt &&
821             ost->resample_channels    == enc->channels   &&
822             ost->resample_sample_rate == enc->sample_rate) {
823             ost->resample = NULL;
824             ost->audio_resample = 0;
825         } else if (ost->audio_resample) {
826             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
827                 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
828             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
829                                                    enc->sample_rate, dec->sample_rate,
830                                                    enc->sample_fmt,  dec->sample_fmt,
831                                                    16, 10, 0, 0.8);
832             if (!ost->resample) {
833                 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
834                         dec->channels, dec->sample_rate,
835                         enc->channels, enc->sample_rate);
836                 ffmpeg_exit(1);
837             }
838         }
839     }
840
841 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
842     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
843         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
844         if (ost->reformat_ctx)
845             av_audio_convert_free(ost->reformat_ctx);
846         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
847                                                    dec->sample_fmt, 1, NULL, 0);
848         if (!ost->reformat_ctx) {
849             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
850                 av_get_sample_fmt_name(dec->sample_fmt),
851                 av_get_sample_fmt_name(enc->sample_fmt));
852             ffmpeg_exit(1);
853         }
854         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
855     }
856
857     if(audio_sync_method){
858         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
859                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
860         double idelta= delta*dec->sample_rate / enc->sample_rate;
861         int byte_delta= ((int)idelta)*2*dec->channels;
862
863         //FIXME resample delay
864         if(fabs(delta) > 50){
865             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
866                 if(byte_delta < 0){
867                     byte_delta= FFMAX(byte_delta, -size);
868                     size += byte_delta;
869                     buf  -= byte_delta;
870                     if(verbose > 2)
871                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
872                     if(!size)
873                         return;
874                     ist->is_start=0;
875                 }else{
876                     static uint8_t *input_tmp= NULL;
877                     input_tmp= av_realloc(input_tmp, byte_delta + size);
878
879                     if(byte_delta > allocated_for_size - size){
880                         allocated_for_size= byte_delta + (int64_t)size;
881                         goto need_realloc;
882                     }
883                     ist->is_start=0;
884
885                     memset(input_tmp, 0, byte_delta);
886                     memcpy(input_tmp + byte_delta, buf, size);
887                     buf= input_tmp;
888                     size += byte_delta;
889                     if(verbose > 2)
890                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
891                 }
892             }else if(audio_sync_method>1){
893                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
894                 av_assert0(ost->audio_resample);
895                 if(verbose > 2)
896                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
897 //                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));
898                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
899             }
900         }
901     }else
902         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
903                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
904
905     if (ost->audio_resample) {
906         buftmp = audio_buf;
907         size_out = audio_resample(ost->resample,
908                                   (short *)buftmp, (short *)buf,
909                                   size / (dec->channels * isize));
910         size_out = size_out * enc->channels * osize;
911     } else {
912         buftmp = buf;
913         size_out = size;
914     }
915
916     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
917         const void *ibuf[6]= {buftmp};
918         void *obuf[6]= {audio_buf};
919         int istride[6]= {isize};
920         int ostride[6]= {osize};
921         int len= size_out/istride[0];
922         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
923             printf("av_audio_convert() failed\n");
924             if (exit_on_error)
925                 ffmpeg_exit(1);
926             return;
927         }
928         buftmp = audio_buf;
929         size_out = len*osize;
930     }
931
932     /* now encode as many frames as possible */
933     if (enc->frame_size > 1) {
934         /* output resampled raw samples */
935         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
936             fprintf(stderr, "av_fifo_realloc2() failed\n");
937             ffmpeg_exit(1);
938         }
939         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
940
941         frame_bytes = enc->frame_size * osize * enc->channels;
942
943         while (av_fifo_size(ost->fifo) >= frame_bytes) {
944             AVPacket pkt;
945             av_init_packet(&pkt);
946
947             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
948
949             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
950
951             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
952                                        (short *)audio_buf);
953             if (ret < 0) {
954                 fprintf(stderr, "Audio encoding failed\n");
955                 ffmpeg_exit(1);
956             }
957             audio_size += ret;
958             pkt.stream_index= ost->index;
959             pkt.data= audio_out;
960             pkt.size= ret;
961             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
962                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
963             pkt.flags |= AV_PKT_FLAG_KEY;
964             write_frame(s, &pkt, enc, ost->bitstream_filters);
965
966             ost->sync_opts += enc->frame_size;
967         }
968     } else {
969         AVPacket pkt;
970         av_init_packet(&pkt);
971
972         ost->sync_opts += size_out / (osize * enc->channels);
973
974         /* output a pcm frame */
975         /* determine the size of the coded buffer */
976         size_out /= osize;
977         if (coded_bps)
978             size_out = size_out*coded_bps/8;
979
980         if(size_out > audio_out_size){
981             fprintf(stderr, "Internal error, buffer size too small\n");
982             ffmpeg_exit(1);
983         }
984
985         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
986         ret = avcodec_encode_audio(enc, audio_out, size_out,
987                                    (short *)buftmp);
988         if (ret < 0) {
989             fprintf(stderr, "Audio encoding failed\n");
990             ffmpeg_exit(1);
991         }
992         audio_size += ret;
993         pkt.stream_index= ost->index;
994         pkt.data= audio_out;
995         pkt.size= ret;
996         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
997             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
998         pkt.flags |= AV_PKT_FLAG_KEY;
999         write_frame(s, &pkt, enc, ost->bitstream_filters);
1000     }
1001 }
1002
1003 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1004 {
1005     AVCodecContext *dec;
1006     AVPicture *picture2;
1007     AVPicture picture_tmp;
1008     uint8_t *buf = 0;
1009
1010     dec = ist->st->codec;
1011
1012     /* deinterlace : must be done before any resize */
1013     if (do_deinterlace) {
1014         int size;
1015
1016         /* create temporary picture */
1017         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1018         buf = av_malloc(size);
1019         if (!buf)
1020             return;
1021
1022         picture2 = &picture_tmp;
1023         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1024
1025         if(avpicture_deinterlace(picture2, picture,
1026                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1027             /* if error, do not deinterlace */
1028             fprintf(stderr, "Deinterlacing failed\n");
1029             av_free(buf);
1030             buf = NULL;
1031             picture2 = picture;
1032         }
1033     } else {
1034         picture2 = picture;
1035     }
1036
1037     if (picture != picture2)
1038         *picture = *picture2;
1039     *bufp = buf;
1040 }
1041
1042 /* we begin to correct av delay at this threshold */
1043 #define AV_DELAY_MAX 0.100
1044
1045 static void do_subtitle_out(AVFormatContext *s,
1046                             OutputStream *ost,
1047                             InputStream *ist,
1048                             AVSubtitle *sub,
1049                             int64_t pts)
1050 {
1051     static uint8_t *subtitle_out = NULL;
1052     int subtitle_out_max_size = 1024 * 1024;
1053     int subtitle_out_size, nb, i;
1054     AVCodecContext *enc;
1055     AVPacket pkt;
1056
1057     if (pts == AV_NOPTS_VALUE) {
1058         fprintf(stderr, "Subtitle packets must have a pts\n");
1059         if (exit_on_error)
1060             ffmpeg_exit(1);
1061         return;
1062     }
1063
1064     enc = ost->st->codec;
1065
1066     if (!subtitle_out) {
1067         subtitle_out = av_malloc(subtitle_out_max_size);
1068     }
1069
1070     /* Note: DVB subtitle need one packet to draw them and one other
1071        packet to clear them */
1072     /* XXX: signal it in the codec context ? */
1073     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1074         nb = 2;
1075     else
1076         nb = 1;
1077
1078     for(i = 0; i < nb; i++) {
1079         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1080         // start_display_time is required to be 0
1081         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1082         sub->end_display_time -= sub->start_display_time;
1083         sub->start_display_time = 0;
1084         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1085                                                     subtitle_out_max_size, sub);
1086         if (subtitle_out_size < 0) {
1087             fprintf(stderr, "Subtitle encoding failed\n");
1088             ffmpeg_exit(1);
1089         }
1090
1091         av_init_packet(&pkt);
1092         pkt.stream_index = ost->index;
1093         pkt.data = subtitle_out;
1094         pkt.size = subtitle_out_size;
1095         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1096         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1097             /* XXX: the pts correction is handled here. Maybe handling
1098                it in the codec would be better */
1099             if (i == 0)
1100                 pkt.pts += 90 * sub->start_display_time;
1101             else
1102                 pkt.pts += 90 * sub->end_display_time;
1103         }
1104         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1105     }
1106 }
1107
1108 static int bit_buffer_size= 1024*256;
1109 static uint8_t *bit_buffer= NULL;
1110
1111 static void do_video_out(AVFormatContext *s,
1112                          OutputStream *ost,
1113                          InputStream *ist,
1114                          AVFrame *in_picture,
1115                          int *frame_size, float quality)
1116 {
1117     int nb_frames, i, ret, resample_changed;
1118     AVFrame *final_picture, *formatted_picture;
1119     AVCodecContext *enc, *dec;
1120     double sync_ipts;
1121
1122     enc = ost->st->codec;
1123     dec = ist->st->codec;
1124
1125     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1126
1127     /* by default, we output a single frame */
1128     nb_frames = 1;
1129
1130     *frame_size = 0;
1131
1132     if(video_sync_method){
1133         double vdelta = sync_ipts - ost->sync_opts;
1134         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1135         if (vdelta < -1.1)
1136             nb_frames = 0;
1137         else if (video_sync_method == 2 || (video_sync_method<0 && (s->oformat->flags & AVFMT_VARIABLE_FPS))){
1138             if(vdelta<=-0.6){
1139                 nb_frames=0;
1140             }else if(vdelta>0.6)
1141                 ost->sync_opts= lrintf(sync_ipts);
1142         }else if (vdelta > 1.1)
1143             nb_frames = lrintf(vdelta);
1144 //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);
1145         if (nb_frames == 0){
1146             ++nb_frames_drop;
1147             if (verbose>2)
1148                 fprintf(stderr, "*** drop!\n");
1149         }else if (nb_frames > 1) {
1150             nb_frames_dup += nb_frames - 1;
1151             if (verbose>2)
1152                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1153         }
1154     }else
1155         ost->sync_opts= lrintf(sync_ipts);
1156
1157     nb_frames= FFMIN(nb_frames, max_frames[AVMEDIA_TYPE_VIDEO] - ost->frame_number);
1158     if (nb_frames <= 0)
1159         return;
1160
1161     formatted_picture = in_picture;
1162     final_picture = formatted_picture;
1163
1164     resample_changed = ost->resample_width   != dec->width  ||
1165                        ost->resample_height  != dec->height ||
1166                        ost->resample_pix_fmt != dec->pix_fmt;
1167
1168     if (resample_changed) {
1169         av_log(NULL, AV_LOG_INFO,
1170                "Input stream #%d.%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1171                ist->file_index, ist->st->index,
1172                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1173                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1174         if(!ost->video_resample)
1175             ffmpeg_exit(1);
1176     }
1177
1178 #if !CONFIG_AVFILTER
1179     if (ost->video_resample) {
1180         final_picture = &ost->pict_tmp;
1181         if (resample_changed) {
1182             /* initialize a new scaler context */
1183             sws_freeContext(ost->img_resample_ctx);
1184             ost->img_resample_ctx = sws_getContext(
1185                 ist->st->codec->width,
1186                 ist->st->codec->height,
1187                 ist->st->codec->pix_fmt,
1188                 ost->st->codec->width,
1189                 ost->st->codec->height,
1190                 ost->st->codec->pix_fmt,
1191                 ost->sws_flags, NULL, NULL, NULL);
1192             if (ost->img_resample_ctx == NULL) {
1193                 fprintf(stderr, "Cannot get resampling context\n");
1194                 ffmpeg_exit(1);
1195             }
1196         }
1197         sws_scale(ost->img_resample_ctx, formatted_picture->data, formatted_picture->linesize,
1198               0, ost->resample_height, final_picture->data, final_picture->linesize);
1199     }
1200 #endif
1201
1202     /* duplicates frame if needed */
1203     for(i=0;i<nb_frames;i++) {
1204         AVPacket pkt;
1205         av_init_packet(&pkt);
1206         pkt.stream_index= ost->index;
1207
1208         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1209             /* raw pictures are written as AVPicture structure to
1210                avoid any copies. We support temorarily the older
1211                method. */
1212             AVFrame* old_frame = enc->coded_frame;
1213             enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
1214             pkt.data= (uint8_t *)final_picture;
1215             pkt.size=  sizeof(AVPicture);
1216             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1217             pkt.flags |= AV_PKT_FLAG_KEY;
1218
1219             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1220             enc->coded_frame = old_frame;
1221         } else {
1222             AVFrame big_picture;
1223
1224             big_picture= *final_picture;
1225             /* better than nothing: use input picture interlaced
1226                settings */
1227             big_picture.interlaced_frame = in_picture->interlaced_frame;
1228             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1229                 if(top_field_first == -1)
1230                     big_picture.top_field_first = in_picture->top_field_first;
1231                 else
1232                     big_picture.top_field_first = top_field_first;
1233             }
1234
1235             /* handles sameq here. This is not correct because it may
1236                not be a global option */
1237             big_picture.quality = quality;
1238             if(!me_threshold)
1239                 big_picture.pict_type = 0;
1240 //            big_picture.pts = AV_NOPTS_VALUE;
1241             big_picture.pts= ost->sync_opts;
1242 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1243 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1244             if (ost->forced_kf_index < ost->forced_kf_count &&
1245                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1246                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1247                 ost->forced_kf_index++;
1248             }
1249             ret = avcodec_encode_video(enc,
1250                                        bit_buffer, bit_buffer_size,
1251                                        &big_picture);
1252             if (ret < 0) {
1253                 fprintf(stderr, "Video encoding failed\n");
1254                 ffmpeg_exit(1);
1255             }
1256
1257             if(ret>0){
1258                 pkt.data= bit_buffer;
1259                 pkt.size= ret;
1260                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1261                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1262 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1263    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1264    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1265
1266                 if(enc->coded_frame->key_frame)
1267                     pkt.flags |= AV_PKT_FLAG_KEY;
1268                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1269                 *frame_size = ret;
1270                 video_size += ret;
1271                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1272                 //        enc->frame_number-1, ret, enc->pict_type);
1273                 /* if two pass, output log */
1274                 if (ost->logfile && enc->stats_out) {
1275                     fprintf(ost->logfile, "%s", enc->stats_out);
1276                 }
1277             }
1278         }
1279         ost->sync_opts++;
1280         ost->frame_number++;
1281     }
1282 }
1283
1284 static double psnr(double d){
1285     return -10.0*log(d)/log(10.0);
1286 }
1287
1288 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1289                            int frame_size)
1290 {
1291     AVCodecContext *enc;
1292     int frame_number;
1293     double ti1, bitrate, avg_bitrate;
1294
1295     /* this is executed just the first time do_video_stats is called */
1296     if (!vstats_file) {
1297         vstats_file = fopen(vstats_filename, "w");
1298         if (!vstats_file) {
1299             perror("fopen");
1300             ffmpeg_exit(1);
1301         }
1302     }
1303
1304     enc = ost->st->codec;
1305     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1306         frame_number = ost->frame_number;
1307         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1308         if (enc->flags&CODEC_FLAG_PSNR)
1309             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1310
1311         fprintf(vstats_file,"f_size= %6d ", frame_size);
1312         /* compute pts value */
1313         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1314         if (ti1 < 0.01)
1315             ti1 = 0.01;
1316
1317         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1318         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1319         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1320             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1321         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1322     }
1323 }
1324
1325 static void print_report(AVFormatContext **output_files,
1326                          OutputStream **ost_table, int nb_ostreams,
1327                          int is_last_report)
1328 {
1329     char buf[1024];
1330     OutputStream *ost;
1331     AVFormatContext *oc;
1332     int64_t total_size;
1333     AVCodecContext *enc;
1334     int frame_number, vid, i;
1335     double bitrate, ti1, pts;
1336     static int64_t last_time = -1;
1337     static int qp_histogram[52];
1338
1339     if (!is_last_report) {
1340         int64_t cur_time;
1341         /* display the report every 0.5 seconds */
1342         cur_time = av_gettime();
1343         if (last_time == -1) {
1344             last_time = cur_time;
1345             return;
1346         }
1347         if ((cur_time - last_time) < 500000)
1348             return;
1349         last_time = cur_time;
1350     }
1351
1352
1353     oc = output_files[0];
1354
1355     total_size = avio_size(oc->pb);
1356     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1357         total_size= avio_tell(oc->pb);
1358
1359     buf[0] = '\0';
1360     ti1 = 1e10;
1361     vid = 0;
1362     for(i=0;i<nb_ostreams;i++) {
1363         float q = -1;
1364         ost = ost_table[i];
1365         enc = ost->st->codec;
1366         if (!ost->st->stream_copy && enc->coded_frame)
1367             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1368         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1369             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1370         }
1371         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1372             float t = (av_gettime()-timer_start) / 1000000.0;
1373
1374             frame_number = ost->frame_number;
1375             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1376                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1377             if(is_last_report)
1378                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1379             if(qp_hist){
1380                 int j;
1381                 int qp = lrintf(q);
1382                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1383                     qp_histogram[qp]++;
1384                 for(j=0; j<32; j++)
1385                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1386             }
1387             if (enc->flags&CODEC_FLAG_PSNR){
1388                 int j;
1389                 double error, error_sum=0;
1390                 double scale, scale_sum=0;
1391                 char type[3]= {'Y','U','V'};
1392                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1393                 for(j=0; j<3; j++){
1394                     if(is_last_report){
1395                         error= enc->error[j];
1396                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1397                     }else{
1398                         error= enc->coded_frame->error[j];
1399                         scale= enc->width*enc->height*255.0*255.0;
1400                     }
1401                     if(j) scale/=4;
1402                     error_sum += error;
1403                     scale_sum += scale;
1404                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1405                 }
1406                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1407             }
1408             vid = 1;
1409         }
1410         /* compute min output value */
1411         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1412         if ((pts < ti1) && (pts > 0))
1413             ti1 = pts;
1414     }
1415     if (ti1 < 0.01)
1416         ti1 = 0.01;
1417
1418     if (verbose > 0 || is_last_report) {
1419         bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1420
1421         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1422             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1423             (double)total_size / 1024, ti1, bitrate);
1424
1425         if (nb_frames_dup || nb_frames_drop)
1426           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1427                   nb_frames_dup, nb_frames_drop);
1428
1429         if (verbose >= 0)
1430             fprintf(stderr, "%s    \r", buf);
1431
1432         fflush(stderr);
1433     }
1434
1435     if (is_last_report && verbose >= 0){
1436         int64_t raw= audio_size + video_size + extra_size;
1437         fprintf(stderr, "\n");
1438         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1439                 video_size/1024.0,
1440                 audio_size/1024.0,
1441                 extra_size/1024.0,
1442                 100.0*(total_size - raw)/raw
1443         );
1444     }
1445 }
1446
1447 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1448 {
1449     int fill_char = 0x00;
1450     if (sample_fmt == AV_SAMPLE_FMT_U8)
1451         fill_char = 0x80;
1452     memset(buf, fill_char, size);
1453 }
1454
1455 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1456 static int output_packet(InputStream *ist, int ist_index,
1457                          OutputStream **ost_table, int nb_ostreams,
1458                          const AVPacket *pkt)
1459 {
1460     AVFormatContext *os;
1461     OutputStream *ost;
1462     int ret, i;
1463     int got_output;
1464     AVFrame picture;
1465     void *buffer_to_free = NULL;
1466     static unsigned int samples_size= 0;
1467     AVSubtitle subtitle, *subtitle_to_free;
1468     int64_t pkt_pts = AV_NOPTS_VALUE;
1469 #if CONFIG_AVFILTER
1470     int frame_available;
1471 #endif
1472     float quality;
1473
1474     AVPacket avpkt;
1475     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1476
1477     if(ist->next_pts == AV_NOPTS_VALUE)
1478         ist->next_pts= ist->pts;
1479
1480     if (pkt == NULL) {
1481         /* EOF handling */
1482         av_init_packet(&avpkt);
1483         avpkt.data = NULL;
1484         avpkt.size = 0;
1485         goto handle_eof;
1486     } else {
1487         avpkt = *pkt;
1488     }
1489
1490     if(pkt->dts != AV_NOPTS_VALUE)
1491         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1492     if(pkt->pts != AV_NOPTS_VALUE)
1493         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1494
1495     //while we have more to decode or while the decoder did output something on EOF
1496     while (avpkt.size > 0 || (!pkt && got_output)) {
1497         uint8_t *data_buf, *decoded_data_buf;
1498         int data_size, decoded_data_size;
1499     handle_eof:
1500         ist->pts= ist->next_pts;
1501
1502         if(avpkt.size && avpkt.size != pkt->size &&
1503            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1504             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1505             ist->showed_multi_packet_warning=1;
1506         }
1507
1508         /* decode the packet if needed */
1509         decoded_data_buf = NULL; /* fail safe */
1510         decoded_data_size= 0;
1511         data_buf  = avpkt.data;
1512         data_size = avpkt.size;
1513         subtitle_to_free = NULL;
1514         if (ist->decoding_needed) {
1515             switch(ist->st->codec->codec_type) {
1516             case AVMEDIA_TYPE_AUDIO:{
1517                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1518                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1519                     av_free(samples);
1520                     samples= av_malloc(samples_size);
1521                 }
1522                 decoded_data_size= samples_size;
1523                     /* XXX: could avoid copy if PCM 16 bits with same
1524                        endianness as CPU */
1525                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1526                                             &avpkt);
1527                 if (ret < 0)
1528                     goto fail_decode;
1529                 avpkt.data += ret;
1530                 avpkt.size -= ret;
1531                 data_size   = ret;
1532                 got_output  = decoded_data_size > 0;
1533                 /* Some bug in mpeg audio decoder gives */
1534                 /* decoded_data_size < 0, it seems they are overflows */
1535                 if (!got_output) {
1536                     /* no audio frame */
1537                     continue;
1538                 }
1539                 decoded_data_buf = (uint8_t *)samples;
1540                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1541                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1542                 break;}
1543             case AVMEDIA_TYPE_VIDEO:
1544                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1545                     /* XXX: allocate picture correctly */
1546                     avcodec_get_frame_defaults(&picture);
1547                     avpkt.pts = pkt_pts;
1548                     avpkt.dts = ist->pts;
1549                     pkt_pts = AV_NOPTS_VALUE;
1550
1551                     ret = avcodec_decode_video2(ist->st->codec,
1552                                                 &picture, &got_output, &avpkt);
1553                     quality = same_quality ? picture.quality : 0;
1554                     if (ret < 0)
1555                         goto fail_decode;
1556                     if (!got_output) {
1557                         /* no picture yet */
1558                         goto discard_packet;
1559                     }
1560                     ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, picture.pkt_pts, picture.pkt_dts);
1561                     if (ist->st->codec->time_base.num != 0) {
1562                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1563                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1564                                           ist->st->codec->time_base.num * ticks) /
1565                             ist->st->codec->time_base.den;
1566                     }
1567                     avpkt.size = 0;
1568                     buffer_to_free = NULL;
1569                     pre_process_video_frame(ist, (AVPicture *)&picture, &buffer_to_free);
1570                     break;
1571             case AVMEDIA_TYPE_SUBTITLE:
1572                 ret = avcodec_decode_subtitle2(ist->st->codec,
1573                                                &subtitle, &got_output, &avpkt);
1574                 if (ret < 0)
1575                     goto fail_decode;
1576                 if (!got_output) {
1577                     goto discard_packet;
1578                 }
1579                 subtitle_to_free = &subtitle;
1580                 avpkt.size = 0;
1581                 break;
1582             default:
1583                 goto fail_decode;
1584             }
1585         } else {
1586             switch(ist->st->codec->codec_type) {
1587             case AVMEDIA_TYPE_AUDIO:
1588                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1589                     ist->st->codec->sample_rate;
1590                 break;
1591             case AVMEDIA_TYPE_VIDEO:
1592                 if (ist->st->codec->time_base.num != 0) {
1593                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1594                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1595                                       ist->st->codec->time_base.num * ticks) /
1596                         ist->st->codec->time_base.den;
1597                 }
1598                 break;
1599             }
1600             ret = avpkt.size;
1601             avpkt.size = 0;
1602         }
1603
1604 #if CONFIG_AVFILTER
1605         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1606             for (i = 0; i < nb_ostreams; i++) {
1607                 ost = ost_table[i];
1608                 if (ost->input_video_filter && ost->source_index == ist_index) {
1609                     AVRational sar;
1610                     if (ist->st->sample_aspect_ratio.num)
1611                         sar = ist->st->sample_aspect_ratio;
1612                     else
1613                         sar = ist->st->codec->sample_aspect_ratio;
1614                     // add it to be filtered
1615                     av_vsrc_buffer_add_frame(ost->input_video_filter, &picture,
1616                                              ist->pts,
1617                                              sar);
1618                 }
1619             }
1620         }
1621 #endif
1622
1623         // preprocess audio (volume)
1624         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1625             if (audio_volume != 256) {
1626                 short *volp;
1627                 volp = samples;
1628                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1629                     int v = ((*volp) * audio_volume + 128) >> 8;
1630                     if (v < -32768) v = -32768;
1631                     if (v >  32767) v = 32767;
1632                     *volp++ = v;
1633                 }
1634             }
1635         }
1636
1637         /* frame rate emulation */
1638         if (rate_emu) {
1639             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1640             int64_t now = av_gettime() - ist->start;
1641             if (pts > now)
1642                 usleep(pts - now);
1643         }
1644         /* if output time reached then transcode raw format,
1645            encode packets and output them */
1646         if (start_time == 0 || ist->pts >= start_time)
1647             for(i=0;i<nb_ostreams;i++) {
1648                 int frame_size;
1649
1650                 ost = ost_table[i];
1651                 if (ost->source_index == ist_index) {
1652 #if CONFIG_AVFILTER
1653                 frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1654                     !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1655                 while (frame_available) {
1656                     AVRational ist_pts_tb;
1657                     if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter)
1658                         get_filtered_video_frame(ost->output_video_filter, &picture, &ost->picref, &ist_pts_tb);
1659                     if (ost->picref)
1660                         ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1661 #endif
1662                     os = output_files[ost->file_index];
1663
1664                     /* set the input output pts pairs */
1665                     //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
1666
1667                     if (ost->encoding_needed) {
1668                         av_assert0(ist->decoding_needed);
1669                         switch(ost->st->codec->codec_type) {
1670                         case AVMEDIA_TYPE_AUDIO:
1671                             do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1672                             break;
1673                         case AVMEDIA_TYPE_VIDEO:
1674 #if CONFIG_AVFILTER
1675                             if (ost->picref->video && !ost->frame_aspect_ratio)
1676                                 ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
1677 #endif
1678                             do_video_out(os, ost, ist, &picture, &frame_size,
1679                                          same_quality ? quality : ost->st->codec->global_quality);
1680                             if (vstats_filename && frame_size)
1681                                 do_video_stats(os, ost, frame_size);
1682                             break;
1683                         case AVMEDIA_TYPE_SUBTITLE:
1684                             do_subtitle_out(os, ost, ist, &subtitle,
1685                                             pkt->pts);
1686                             break;
1687                         default:
1688                             abort();
1689                         }
1690                     } else {
1691                         AVFrame avframe; //FIXME/XXX remove this
1692                         AVPacket opkt;
1693                         int64_t ost_tb_start_time= av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1694
1695                         av_init_packet(&opkt);
1696
1697                         if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1698 #if !CONFIG_AVFILTER
1699                             continue;
1700 #else
1701                             goto cont;
1702 #endif
1703
1704                         /* no reencoding needed : output the packet directly */
1705                         /* force the input stream PTS */
1706
1707                         avcodec_get_frame_defaults(&avframe);
1708                         ost->st->codec->coded_frame= &avframe;
1709                         avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1710
1711                         if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1712                             audio_size += data_size;
1713                         else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1714                             video_size += data_size;
1715                             ost->sync_opts++;
1716                         }
1717
1718                         opkt.stream_index= ost->index;
1719                         if(pkt->pts != AV_NOPTS_VALUE)
1720                             opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1721                         else
1722                             opkt.pts= AV_NOPTS_VALUE;
1723
1724                         if (pkt->dts == AV_NOPTS_VALUE)
1725                             opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1726                         else
1727                             opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1728                         opkt.dts -= ost_tb_start_time;
1729
1730                         opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1731                         opkt.flags= pkt->flags;
1732
1733                         //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1734                         if(   ost->st->codec->codec_id != CODEC_ID_H264
1735                            && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1736                            && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1737                            ) {
1738                             if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1739                                 opkt.destruct= av_destruct_packet;
1740                         } else {
1741                             opkt.data = data_buf;
1742                             opkt.size = data_size;
1743                         }
1744
1745                         write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1746                         ost->st->codec->frame_number++;
1747                         ost->frame_number++;
1748                         av_free_packet(&opkt);
1749                     }
1750 #if CONFIG_AVFILTER
1751                     cont:
1752                     frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1753                                        ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1754                     if (ost->picref)
1755                         avfilter_unref_buffer(ost->picref);
1756                 }
1757 #endif
1758                 }
1759             }
1760
1761         av_free(buffer_to_free);
1762         /* XXX: allocate the subtitles in the codec ? */
1763         if (subtitle_to_free) {
1764             avsubtitle_free(subtitle_to_free);
1765             subtitle_to_free = NULL;
1766         }
1767     }
1768  discard_packet:
1769     if (pkt == NULL) {
1770         /* EOF handling */
1771
1772         for(i=0;i<nb_ostreams;i++) {
1773             ost = ost_table[i];
1774             if (ost->source_index == ist_index) {
1775                 AVCodecContext *enc= ost->st->codec;
1776                 os = output_files[ost->file_index];
1777
1778                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1779                     continue;
1780                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1781                     continue;
1782
1783                 if (ost->encoding_needed) {
1784                     for(;;) {
1785                         AVPacket pkt;
1786                         int fifo_bytes;
1787                         av_init_packet(&pkt);
1788                         pkt.stream_index= ost->index;
1789
1790                         switch(ost->st->codec->codec_type) {
1791                         case AVMEDIA_TYPE_AUDIO:
1792                             fifo_bytes = av_fifo_size(ost->fifo);
1793                             ret = 0;
1794                             /* encode any samples remaining in fifo */
1795                             if (fifo_bytes > 0) {
1796                                 int osize = av_get_bytes_per_sample(enc->sample_fmt);
1797                                 int fs_tmp = enc->frame_size;
1798
1799                                 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1800                                 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1801                                     enc->frame_size = fifo_bytes / (osize * enc->channels);
1802                                 } else { /* pad */
1803                                     int frame_bytes = enc->frame_size*osize*enc->channels;
1804                                     if (allocated_audio_buf_size < frame_bytes)
1805                                         ffmpeg_exit(1);
1806                                     generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1807                                 }
1808
1809                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1810                                 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1811                                                           ost->st->time_base.num, enc->sample_rate);
1812                                 enc->frame_size = fs_tmp;
1813                             }
1814                             if(ret <= 0) {
1815                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1816                             }
1817                             if (ret < 0) {
1818                                 fprintf(stderr, "Audio encoding failed\n");
1819                                 ffmpeg_exit(1);
1820                             }
1821                             audio_size += ret;
1822                             pkt.flags |= AV_PKT_FLAG_KEY;
1823                             break;
1824                         case AVMEDIA_TYPE_VIDEO:
1825                             ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1826                             if (ret < 0) {
1827                                 fprintf(stderr, "Video encoding failed\n");
1828                                 ffmpeg_exit(1);
1829                             }
1830                             video_size += ret;
1831                             if(enc->coded_frame && enc->coded_frame->key_frame)
1832                                 pkt.flags |= AV_PKT_FLAG_KEY;
1833                             if (ost->logfile && enc->stats_out) {
1834                                 fprintf(ost->logfile, "%s", enc->stats_out);
1835                             }
1836                             break;
1837                         default:
1838                             ret=-1;
1839                         }
1840
1841                         if(ret<=0)
1842                             break;
1843                         pkt.data= bit_buffer;
1844                         pkt.size= ret;
1845                         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1846                             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1847                         write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1848                     }
1849                 }
1850             }
1851         }
1852     }
1853
1854     return 0;
1855  fail_decode:
1856     return -1;
1857 }
1858
1859 static void print_sdp(AVFormatContext **avc, int n)
1860 {
1861     char sdp[2048];
1862
1863     av_sdp_create(avc, n, sdp, sizeof(sdp));
1864     printf("SDP:\n%s\n", sdp);
1865     fflush(stdout);
1866 }
1867
1868 static int copy_chapters(int infile, int outfile)
1869 {
1870     AVFormatContext *is = input_files[infile].ctx;
1871     AVFormatContext *os = output_files[outfile];
1872     int i;
1873
1874     for (i = 0; i < is->nb_chapters; i++) {
1875         AVChapter *in_ch = is->chapters[i], *out_ch;
1876         int64_t ts_off   = av_rescale_q(start_time - input_files[infile].ts_offset,
1877                                       AV_TIME_BASE_Q, in_ch->time_base);
1878         int64_t rt       = (recording_time == INT64_MAX) ? INT64_MAX :
1879                            av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
1880
1881
1882         if (in_ch->end < ts_off)
1883             continue;
1884         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
1885             break;
1886
1887         out_ch = av_mallocz(sizeof(AVChapter));
1888         if (!out_ch)
1889             return AVERROR(ENOMEM);
1890
1891         out_ch->id        = in_ch->id;
1892         out_ch->time_base = in_ch->time_base;
1893         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
1894         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
1895
1896         if (metadata_chapters_autocopy)
1897             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
1898
1899         os->nb_chapters++;
1900         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
1901         if (!os->chapters)
1902             return AVERROR(ENOMEM);
1903         os->chapters[os->nb_chapters - 1] = out_ch;
1904     }
1905     return 0;
1906 }
1907
1908 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1909                                     AVCodecContext *avctx)
1910 {
1911     char *p;
1912     int n = 1, i;
1913     int64_t t;
1914
1915     for (p = kf; *p; p++)
1916         if (*p == ',')
1917             n++;
1918     ost->forced_kf_count = n;
1919     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1920     if (!ost->forced_kf_pts) {
1921         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1922         ffmpeg_exit(1);
1923     }
1924     for (i = 0; i < n; i++) {
1925         p = i ? strchr(p, ',') + 1 : kf;
1926         t = parse_time_or_die("force_key_frames", p, 1);
1927         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1928     }
1929 }
1930
1931 /*
1932  * The following code is the main loop of the file converter
1933  */
1934 static int transcode(AVFormatContext **output_files,
1935                      int nb_output_files,
1936                      InputFile *input_files,
1937                      int nb_input_files,
1938                      StreamMap *stream_maps, int nb_stream_maps)
1939 {
1940     int ret = 0, i, j, k, n, nb_ostreams = 0;
1941     AVFormatContext *is, *os;
1942     AVCodecContext *codec, *icodec;
1943     OutputStream *ost, **ost_table = NULL;
1944     InputStream *ist;
1945     char error[1024];
1946     int want_sdp = 1;
1947     uint8_t no_packet[MAX_FILES]={0};
1948     int no_packet_count=0;
1949
1950     if (rate_emu)
1951         for (i = 0; i < nb_input_streams; i++)
1952             input_streams[i].start = av_gettime();
1953
1954     /* output stream init */
1955     nb_ostreams = 0;
1956     for(i=0;i<nb_output_files;i++) {
1957         os = output_files[i];
1958         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1959             av_dump_format(output_files[i], i, output_files[i]->filename, 1);
1960             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
1961             ret = AVERROR(EINVAL);
1962             goto fail;
1963         }
1964         nb_ostreams += os->nb_streams;
1965     }
1966     if (nb_stream_maps > 0 && nb_stream_maps != nb_ostreams) {
1967         fprintf(stderr, "Number of stream maps must match number of output streams\n");
1968         ret = AVERROR(EINVAL);
1969         goto fail;
1970     }
1971
1972     /* Sanity check the mapping args -- do the input files & streams exist? */
1973     for(i=0;i<nb_stream_maps;i++) {
1974         int fi = stream_maps[i].file_index;
1975         int si = stream_maps[i].stream_index;
1976
1977         if (fi < 0 || fi > nb_input_files - 1 ||
1978             si < 0 || si > input_files[fi].ctx->nb_streams - 1) {
1979             fprintf(stderr,"Could not find input stream #%d.%d\n", fi, si);
1980             ret = AVERROR(EINVAL);
1981             goto fail;
1982         }
1983         fi = stream_maps[i].sync_file_index;
1984         si = stream_maps[i].sync_stream_index;
1985         if (fi < 0 || fi > nb_input_files - 1 ||
1986             si < 0 || si > input_files[fi].ctx->nb_streams - 1) {
1987             fprintf(stderr,"Could not find sync stream #%d.%d\n", fi, si);
1988             ret = AVERROR(EINVAL);
1989             goto fail;
1990         }
1991     }
1992
1993     ost_table = av_mallocz(sizeof(OutputStream *) * nb_ostreams);
1994     if (!ost_table)
1995         goto fail;
1996     n = 0;
1997     for(k=0;k<nb_output_files;k++) {
1998         os = output_files[k];
1999         for(i=0;i<os->nb_streams;i++,n++) {
2000             int found;
2001             ost = ost_table[n] = output_streams_for_file[k][i];
2002             if (nb_stream_maps > 0) {
2003                 ost->source_index = input_files[stream_maps[n].file_index].ist_index +
2004                     stream_maps[n].stream_index;
2005
2006                 /* Sanity check that the stream types match */
2007                 if (input_streams[ost->source_index].st->codec->codec_type != ost->st->codec->codec_type) {
2008                     int i= ost->file_index;
2009                     av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2010                     fprintf(stderr, "Codec type mismatch for mapping #%d.%d -> #%d.%d\n",
2011                         stream_maps[n].file_index, stream_maps[n].stream_index,
2012                         ost->file_index, ost->index);
2013                     ffmpeg_exit(1);
2014                 }
2015
2016             } else {
2017                 int best_nb_frames=-1;
2018                 /* get corresponding input stream index : we select the first one with the right type */
2019                 found = 0;
2020                 for (j = 0; j < nb_input_streams; j++) {
2021                     int skip=0;
2022                     ist = &input_streams[j];
2023                     if(opt_programid){
2024                         int pi,si;
2025                         AVFormatContext *f = input_files[ist->file_index].ctx;
2026                         skip=1;
2027                         for(pi=0; pi<f->nb_programs; pi++){
2028                             AVProgram *p= f->programs[pi];
2029                             if(p->id == opt_programid)
2030                                 for(si=0; si<p->nb_stream_indexes; si++){
2031                                     if(f->streams[ p->stream_index[si] ] == ist->st)
2032                                         skip=0;
2033                                 }
2034                         }
2035                     }
2036                     if (ist->discard && ist->st->discard != AVDISCARD_ALL && !skip &&
2037                         ist->st->codec->codec_type == ost->st->codec->codec_type) {
2038                         if(best_nb_frames < ist->st->codec_info_nb_frames){
2039                             best_nb_frames= ist->st->codec_info_nb_frames;
2040                             ost->source_index = j;
2041                             found = 1;
2042                         }
2043                     }
2044                 }
2045
2046                 if (!found) {
2047                     if(! opt_programid) {
2048                         /* try again and reuse existing stream */
2049                         for (j = 0; j < nb_input_streams; j++) {
2050                             ist = &input_streams[j];
2051                             if (   ist->st->codec->codec_type == ost->st->codec->codec_type
2052                                 && ist->st->discard != AVDISCARD_ALL) {
2053                                 ost->source_index = j;
2054                                 found = 1;
2055                             }
2056                         }
2057                     }
2058                     if (!found) {
2059                         int i= ost->file_index;
2060                         av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2061                         fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",
2062                                 ost->file_index, ost->index);
2063                         ffmpeg_exit(1);
2064                     }
2065                 }
2066             }
2067             ist = &input_streams[ost->source_index];
2068             ist->discard = 0;
2069             ost->sync_ist = (nb_stream_maps > 0) ?
2070                 &input_streams[input_files[stream_maps[n].sync_file_index].ist_index +
2071                          stream_maps[n].sync_stream_index] : ist;
2072         }
2073     }
2074
2075     /* for each output stream, we compute the right encoding parameters */
2076     for(i=0;i<nb_ostreams;i++) {
2077         ost = ost_table[i];
2078         os = output_files[ost->file_index];
2079         ist = &input_streams[ost->source_index];
2080
2081         codec = ost->st->codec;
2082         icodec = ist->st->codec;
2083
2084         if (metadata_streams_autocopy)
2085             av_dict_copy(&ost->st->metadata, ist->st->metadata,
2086                          AV_DICT_DONT_OVERWRITE);
2087
2088         ost->st->disposition = ist->st->disposition;
2089         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2090         codec->chroma_sample_location = icodec->chroma_sample_location;
2091
2092         if (ost->st->stream_copy) {
2093             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2094
2095             if (extra_size > INT_MAX)
2096                 goto fail;
2097
2098             /* if stream_copy is selected, no need to decode or encode */
2099             codec->codec_id = icodec->codec_id;
2100             codec->codec_type = icodec->codec_type;
2101
2102             if(!codec->codec_tag){
2103                 if(   !os->oformat->codec_tag
2104                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2105                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2106                     codec->codec_tag = icodec->codec_tag;
2107             }
2108
2109             codec->bit_rate = icodec->bit_rate;
2110             codec->rc_max_rate    = icodec->rc_max_rate;
2111             codec->rc_buffer_size = icodec->rc_buffer_size;
2112             codec->extradata= av_mallocz(extra_size);
2113             if (!codec->extradata)
2114                 goto fail;
2115             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2116             codec->extradata_size= icodec->extradata_size;
2117             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){
2118                 codec->time_base = icodec->time_base;
2119                 codec->time_base.num *= icodec->ticks_per_frame;
2120                 av_reduce(&codec->time_base.num, &codec->time_base.den,
2121                           codec->time_base.num, codec->time_base.den, INT_MAX);
2122             }else
2123                 codec->time_base = ist->st->time_base;
2124             switch(codec->codec_type) {
2125             case AVMEDIA_TYPE_AUDIO:
2126                 if(audio_volume != 256) {
2127                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2128                     ffmpeg_exit(1);
2129                 }
2130                 codec->channel_layout = icodec->channel_layout;
2131                 codec->sample_rate = icodec->sample_rate;
2132                 codec->channels = icodec->channels;
2133                 codec->frame_size = icodec->frame_size;
2134                 codec->audio_service_type = icodec->audio_service_type;
2135                 codec->block_align= icodec->block_align;
2136                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2137                     codec->block_align= 0;
2138                 if(codec->codec_id == CODEC_ID_AC3)
2139                     codec->block_align= 0;
2140                 break;
2141             case AVMEDIA_TYPE_VIDEO:
2142                 codec->pix_fmt = icodec->pix_fmt;
2143                 codec->width = icodec->width;
2144                 codec->height = icodec->height;
2145                 codec->has_b_frames = icodec->has_b_frames;
2146                 if (!codec->sample_aspect_ratio.num) {
2147                     codec->sample_aspect_ratio =
2148                     ost->st->sample_aspect_ratio =
2149                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2150                         ist->st->codec->sample_aspect_ratio.num ?
2151                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2152                 }
2153                 break;
2154             case AVMEDIA_TYPE_SUBTITLE:
2155                 codec->width = icodec->width;
2156                 codec->height = icodec->height;
2157                 break;
2158             case AVMEDIA_TYPE_DATA:
2159                 break;
2160             default:
2161                 abort();
2162             }
2163         } else {
2164             if (!ost->enc)
2165                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2166             switch(codec->codec_type) {
2167             case AVMEDIA_TYPE_AUDIO:
2168                 ost->fifo= av_fifo_alloc(1024);
2169                 if(!ost->fifo)
2170                     goto fail;
2171                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2172                 if (!codec->sample_rate) {
2173                     codec->sample_rate = icodec->sample_rate;
2174                     if (icodec->lowres)
2175                         codec->sample_rate >>= icodec->lowres;
2176                 }
2177                 choose_sample_rate(ost->st, ost->enc);
2178                 codec->time_base = (AVRational){1, codec->sample_rate};
2179                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2180                     codec->sample_fmt = icodec->sample_fmt;
2181                 choose_sample_fmt(ost->st, ost->enc);
2182                 if (!codec->channels)
2183                     codec->channels = icodec->channels;
2184                 codec->channel_layout = icodec->channel_layout;
2185                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2186                     codec->channel_layout = 0;
2187                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2188                 icodec->request_channels = codec->channels;
2189                 ist->decoding_needed = 1;
2190                 ost->encoding_needed = 1;
2191                 ost->resample_sample_fmt  = icodec->sample_fmt;
2192                 ost->resample_sample_rate = icodec->sample_rate;
2193                 ost->resample_channels    = icodec->channels;
2194                 break;
2195             case AVMEDIA_TYPE_VIDEO:
2196                 if (codec->pix_fmt == PIX_FMT_NONE)
2197                     codec->pix_fmt = icodec->pix_fmt;
2198                 choose_pixel_fmt(ost->st, ost->enc);
2199
2200                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2201                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2202                     ffmpeg_exit(1);
2203                 }
2204                 ost->video_resample = codec->width   != icodec->width  ||
2205                                       codec->height  != icodec->height ||
2206                                       codec->pix_fmt != icodec->pix_fmt;
2207                 if (ost->video_resample) {
2208 #if !CONFIG_AVFILTER
2209                     avcodec_get_frame_defaults(&ost->pict_tmp);
2210                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2211                                          codec->width, codec->height)) {
2212                         fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
2213                         ffmpeg_exit(1);
2214                     }
2215                     ost->img_resample_ctx = sws_getContext(
2216                         icodec->width,
2217                         icodec->height,
2218                             icodec->pix_fmt,
2219                             codec->width,
2220                             codec->height,
2221                             codec->pix_fmt,
2222                             ost->sws_flags, NULL, NULL, NULL);
2223                     if (ost->img_resample_ctx == NULL) {
2224                         fprintf(stderr, "Cannot get resampling context\n");
2225                         ffmpeg_exit(1);
2226                     }
2227 #endif
2228                     codec->bits_per_raw_sample= 0;
2229                 }
2230                 if (!codec->width || !codec->height) {
2231                     codec->width  = icodec->width;
2232                     codec->height = icodec->height;
2233                 }
2234                 ost->resample_height = icodec->height;
2235                 ost->resample_width  = icodec->width;
2236                 ost->resample_pix_fmt= icodec->pix_fmt;
2237                 ost->encoding_needed = 1;
2238                 ist->decoding_needed = 1;
2239
2240                 if (!ost->frame_rate.num)
2241                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2242                 if (ost->enc && ost->enc->supported_framerates && !force_fps) {
2243                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2244                     ost->frame_rate = ost->enc->supported_framerates[idx];
2245                 }
2246                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2247
2248 #if CONFIG_AVFILTER
2249                 if (configure_video_filters(ist, ost)) {
2250                     fprintf(stderr, "Error opening filters!\n");
2251                     exit(1);
2252                 }
2253 #endif
2254                 break;
2255             case AVMEDIA_TYPE_SUBTITLE:
2256                 ost->encoding_needed = 1;
2257                 ist->decoding_needed = 1;
2258                 break;
2259             default:
2260                 abort();
2261                 break;
2262             }
2263             /* two pass mode */
2264             if (ost->encoding_needed &&
2265                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2266                 char logfilename[1024];
2267                 FILE *f;
2268
2269                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2270                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2271                          i);
2272                 if (codec->flags & CODEC_FLAG_PASS1) {
2273                     f = fopen(logfilename, "wb");
2274                     if (!f) {
2275                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2276                         ffmpeg_exit(1);
2277                     }
2278                     ost->logfile = f;
2279                 } else {
2280                     char  *logbuffer;
2281                     size_t logbuffer_size;
2282                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2283                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2284                         ffmpeg_exit(1);
2285                     }
2286                     codec->stats_in = logbuffer;
2287                 }
2288             }
2289         }
2290         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2291             int size= codec->width * codec->height;
2292             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2293         }
2294     }
2295
2296     if (!bit_buffer)
2297         bit_buffer = av_malloc(bit_buffer_size);
2298     if (!bit_buffer) {
2299         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2300                 bit_buffer_size);
2301         ret = AVERROR(ENOMEM);
2302         goto fail;
2303     }
2304
2305     /* open each encoder */
2306     for(i=0;i<nb_ostreams;i++) {
2307         ost = ost_table[i];
2308         if (ost->encoding_needed) {
2309             AVCodec *codec = ost->enc;
2310             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2311             if (!codec) {
2312                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2313                          ost->st->codec->codec_id, ost->file_index, ost->index);
2314                 ret = AVERROR(EINVAL);
2315                 goto dump_format;
2316             }
2317             if (dec->subtitle_header) {
2318                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2319                 if (!ost->st->codec->subtitle_header) {
2320                     ret = AVERROR(ENOMEM);
2321                     goto dump_format;
2322                 }
2323                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2324                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2325             }
2326             if (avcodec_open(ost->st->codec, codec) < 0) {
2327                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2328                         ost->file_index, ost->index);
2329                 ret = AVERROR(EINVAL);
2330                 goto dump_format;
2331             }
2332             extra_size += ost->st->codec->extradata_size;
2333         }
2334     }
2335
2336     /* open each decoder */
2337     for (i = 0; i < nb_input_streams; i++) {
2338         ist = &input_streams[i];
2339         if (ist->decoding_needed) {
2340             AVCodec *codec = ist->dec;
2341             if (!codec)
2342                 codec = avcodec_find_decoder(ist->st->codec->codec_id);
2343             if (!codec) {
2344                 snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
2345                         ist->st->codec->codec_id, ist->file_index, ist->st->index);
2346                 ret = AVERROR(EINVAL);
2347                 goto dump_format;
2348             }
2349
2350             /* update requested sample format for the decoder based on the
2351                corresponding encoder sample format */
2352             for (j = 0; j < nb_ostreams; j++) {
2353                 ost = ost_table[j];
2354                 if (ost->source_index == i) {
2355                     update_sample_fmt(ist->st->codec, codec, ost->st->codec);
2356                     break;
2357                 }
2358             }
2359
2360             if (avcodec_open(ist->st->codec, codec) < 0) {
2361                 snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
2362                         ist->file_index, ist->st->index);
2363                 ret = AVERROR(EINVAL);
2364                 goto dump_format;
2365             }
2366             //if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2367             //    ist->st->codec->flags |= CODEC_FLAG_REPEAT_FIELD;
2368         }
2369     }
2370
2371     /* init pts */
2372     for (i = 0; i < nb_input_streams; i++) {
2373         AVStream *st;
2374         ist = &input_streams[i];
2375         st= ist->st;
2376         ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
2377         ist->next_pts = AV_NOPTS_VALUE;
2378         init_pts_correction(&ist->pts_ctx);
2379         ist->is_start = 1;
2380     }
2381
2382     /* set meta data information from input file if required */
2383     for (i=0;i<nb_meta_data_maps;i++) {
2384         AVFormatContext *files[2];
2385         AVDictionary    **meta[2];
2386         int j;
2387
2388 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
2389         if ((index) < 0 || (index) >= (nb_elems)) {\
2390             snprintf(error, sizeof(error), "Invalid %s index %d while processing metadata maps\n",\
2391                      (desc), (index));\
2392             ret = AVERROR(EINVAL);\
2393             goto dump_format;\
2394         }
2395
2396         int out_file_index = meta_data_maps[i][0].file;
2397         int in_file_index = meta_data_maps[i][1].file;
2398         if (in_file_index < 0 || out_file_index < 0)
2399             continue;
2400         METADATA_CHECK_INDEX(out_file_index, nb_output_files, "output file")
2401         METADATA_CHECK_INDEX(in_file_index, nb_input_files, "input file")
2402
2403         files[0] = output_files[out_file_index];
2404         files[1] = input_files[in_file_index].ctx;
2405
2406         for (j = 0; j < 2; j++) {
2407             MetadataMap *map = &meta_data_maps[i][j];
2408
2409             switch (map->type) {
2410             case 'g':
2411                 meta[j] = &files[j]->metadata;
2412                 break;
2413             case 's':
2414                 METADATA_CHECK_INDEX(map->index, files[j]->nb_streams, "stream")
2415                 meta[j] = &files[j]->streams[map->index]->metadata;
2416                 break;
2417             case 'c':
2418                 METADATA_CHECK_INDEX(map->index, files[j]->nb_chapters, "chapter")
2419                 meta[j] = &files[j]->chapters[map->index]->metadata;
2420                 break;
2421             case 'p':
2422                 METADATA_CHECK_INDEX(map->index, files[j]->nb_programs, "program")
2423                 meta[j] = &files[j]->programs[map->index]->metadata;
2424                 break;
2425             }
2426         }
2427
2428         av_dict_copy(meta[0], *meta[1], AV_DICT_DONT_OVERWRITE);
2429     }
2430
2431     /* copy global metadata by default */
2432     if (metadata_global_autocopy) {
2433
2434         for (i = 0; i < nb_output_files; i++)
2435             av_dict_copy(&output_files[i]->metadata, input_files[0].ctx->metadata,
2436                          AV_DICT_DONT_OVERWRITE);
2437     }
2438
2439     /* copy chapters according to chapter maps */
2440     for (i = 0; i < nb_chapter_maps; i++) {
2441         int infile  = chapter_maps[i].in_file;
2442         int outfile = chapter_maps[i].out_file;
2443
2444         if (infile < 0 || outfile < 0)
2445             continue;
2446         if (infile >= nb_input_files) {
2447             snprintf(error, sizeof(error), "Invalid input file index %d in chapter mapping.\n", infile);
2448             ret = AVERROR(EINVAL);
2449             goto dump_format;
2450         }
2451         if (outfile >= nb_output_files) {
2452             snprintf(error, sizeof(error), "Invalid output file index %d in chapter mapping.\n",outfile);
2453             ret = AVERROR(EINVAL);
2454             goto dump_format;
2455         }
2456         copy_chapters(infile, outfile);
2457     }
2458
2459     /* copy chapters from the first input file that has them*/
2460     if (!nb_chapter_maps)
2461         for (i = 0; i < nb_input_files; i++) {
2462             if (!input_files[i].ctx->nb_chapters)
2463                 continue;
2464
2465             for (j = 0; j < nb_output_files; j++)
2466                 if ((ret = copy_chapters(i, j)) < 0)
2467                     goto dump_format;
2468             break;
2469         }
2470
2471     /* open files and write file headers */
2472     for(i=0;i<nb_output_files;i++) {
2473         os = output_files[i];
2474         if (avformat_write_header(os, &output_opts[i]) < 0) {
2475             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2476             ret = AVERROR(EINVAL);
2477             goto dump_format;
2478         }
2479         assert_avoptions(output_opts[i]);
2480         if (strcmp(output_files[i]->oformat->name, "rtp")) {
2481             want_sdp = 0;
2482         }
2483     }
2484
2485  dump_format:
2486     /* dump the file output parameters - cannot be done before in case
2487        of stream copy */
2488     for(i=0;i<nb_output_files;i++) {
2489         av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2490     }
2491
2492     /* dump the stream mapping */
2493     if (verbose >= 0) {
2494         fprintf(stderr, "Stream mapping:\n");
2495         for(i=0;i<nb_ostreams;i++) {
2496             ost = ost_table[i];
2497             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2498                     input_streams[ost->source_index].file_index,
2499                     input_streams[ost->source_index].st->index,
2500                     ost->file_index,
2501                     ost->index);
2502             if (ost->sync_ist != &input_streams[ost->source_index])
2503                 fprintf(stderr, " [sync #%d.%d]",
2504                         ost->sync_ist->file_index,
2505                         ost->sync_ist->st->index);
2506             fprintf(stderr, "\n");
2507         }
2508     }
2509
2510     if (ret) {
2511         fprintf(stderr, "%s\n", error);
2512         goto fail;
2513     }
2514
2515     if (want_sdp) {
2516         print_sdp(output_files, nb_output_files);
2517     }
2518
2519     if (verbose >= 0)
2520         fprintf(stderr, "Press ctrl-c to stop encoding\n");
2521     term_init();
2522
2523     timer_start = av_gettime();
2524
2525     for(; received_sigterm == 0;) {
2526         int file_index, ist_index;
2527         AVPacket pkt;
2528         double ipts_min;
2529         double opts_min;
2530
2531     redo:
2532         ipts_min= 1e100;
2533         opts_min= 1e100;
2534
2535         /* select the stream that we must read now by looking at the
2536            smallest output pts */
2537         file_index = -1;
2538         for(i=0;i<nb_ostreams;i++) {
2539             double ipts, opts;
2540             ost = ost_table[i];
2541             os = output_files[ost->file_index];
2542             ist = &input_streams[ost->source_index];
2543             if(ist->is_past_recording_time || no_packet[ist->file_index])
2544                 continue;
2545                 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2546             ipts = (double)ist->pts;
2547             if (!input_files[ist->file_index].eof_reached){
2548                 if(ipts < ipts_min) {
2549                     ipts_min = ipts;
2550                     if(input_sync ) file_index = ist->file_index;
2551                 }
2552                 if(opts < opts_min) {
2553                     opts_min = opts;
2554                     if(!input_sync) file_index = ist->file_index;
2555                 }
2556             }
2557             if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
2558                 file_index= -1;
2559                 break;
2560             }
2561         }
2562         /* if none, if is finished */
2563         if (file_index < 0) {
2564             if(no_packet_count){
2565                 no_packet_count=0;
2566                 memset(no_packet, 0, sizeof(no_packet));
2567                 usleep(10000);
2568                 continue;
2569             }
2570             break;
2571         }
2572
2573         /* finish if limit size exhausted */
2574         if (limit_filesize != 0 && limit_filesize <= avio_tell(output_files[0]->pb))
2575             break;
2576
2577         /* read a frame from it and output it in the fifo */
2578         is = input_files[file_index].ctx;
2579         ret= av_read_frame(is, &pkt);
2580         if(ret == AVERROR(EAGAIN)){
2581             no_packet[file_index]=1;
2582             no_packet_count++;
2583             continue;
2584         }
2585         if (ret < 0) {
2586             input_files[file_index].eof_reached = 1;
2587             if (opt_shortest)
2588                 break;
2589             else
2590                 continue;
2591         }
2592
2593         no_packet_count=0;
2594         memset(no_packet, 0, sizeof(no_packet));
2595
2596         if (do_pkt_dump) {
2597             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2598                              is->streams[pkt.stream_index]);
2599         }
2600         /* the following test is needed in case new streams appear
2601            dynamically in stream : we ignore them */
2602         if (pkt.stream_index >= input_files[file_index].ctx->nb_streams)
2603             goto discard_packet;
2604         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2605         ist = &input_streams[ist_index];
2606         if (ist->discard)
2607             goto discard_packet;
2608
2609         if (pkt.dts != AV_NOPTS_VALUE)
2610             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2611         if (pkt.pts != AV_NOPTS_VALUE)
2612             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2613
2614         if (ist->ts_scale) {
2615             if(pkt.pts != AV_NOPTS_VALUE)
2616                 pkt.pts *= ist->ts_scale;
2617             if(pkt.dts != AV_NOPTS_VALUE)
2618                 pkt.dts *= ist->ts_scale;
2619         }
2620
2621 //        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);
2622         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2623             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2624             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2625             int64_t delta= pkt_dts - ist->next_pts;
2626             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2627                 input_files[ist->file_index].ts_offset -= delta;
2628                 if (verbose > 2)
2629                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2630                             delta, input_files[ist->file_index].ts_offset);
2631                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2632                 if(pkt.pts != AV_NOPTS_VALUE)
2633                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2634             }
2635         }
2636
2637         /* finish if recording time exhausted */
2638         if (recording_time != INT64_MAX &&
2639             av_compare_ts(pkt.pts, ist->st->time_base, recording_time + start_time, (AVRational){1, 1000000}) >= 0) {
2640             ist->is_past_recording_time = 1;
2641             goto discard_packet;
2642         }
2643
2644         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2645         if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
2646
2647             if (verbose >= 0)
2648                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2649                         ist->file_index, ist->st->index);
2650             if (exit_on_error)
2651                 ffmpeg_exit(1);
2652             av_free_packet(&pkt);
2653             goto redo;
2654         }
2655
2656     discard_packet:
2657         av_free_packet(&pkt);
2658
2659         /* dump report by using the output first video and audio streams */
2660         print_report(output_files, ost_table, nb_ostreams, 0);
2661     }
2662
2663     /* at the end of stream, we must flush the decoder buffers */
2664     for (i = 0; i < nb_input_streams; i++) {
2665         ist = &input_streams[i];
2666         if (ist->decoding_needed) {
2667             output_packet(ist, i, ost_table, nb_ostreams, NULL);
2668         }
2669     }
2670
2671     term_exit();
2672
2673     /* write the trailer if needed and close file */
2674     for(i=0;i<nb_output_files;i++) {
2675         os = output_files[i];
2676         av_write_trailer(os);
2677     }
2678
2679     /* dump report by using the first video and audio streams */
2680     print_report(output_files, ost_table, nb_ostreams, 1);
2681
2682     /* close each encoder */
2683     for(i=0;i<nb_ostreams;i++) {
2684         ost = ost_table[i];
2685         if (ost->encoding_needed) {
2686             av_freep(&ost->st->codec->stats_in);
2687             avcodec_close(ost->st->codec);
2688         }
2689 #if CONFIG_AVFILTER
2690         avfilter_graph_free(&ost->graph);
2691 #endif
2692     }
2693
2694     /* close each decoder */
2695     for (i = 0; i < nb_input_streams; i++) {
2696         ist = &input_streams[i];
2697         if (ist->decoding_needed) {
2698             avcodec_close(ist->st->codec);
2699         }
2700     }
2701
2702     /* finished ! */
2703     ret = 0;
2704
2705  fail:
2706     av_freep(&bit_buffer);
2707
2708     if (ost_table) {
2709         for(i=0;i<nb_ostreams;i++) {
2710             ost = ost_table[i];
2711             if (ost) {
2712                 if (ost->st->stream_copy)
2713                     av_freep(&ost->st->codec->extradata);
2714                 if (ost->logfile) {
2715                     fclose(ost->logfile);
2716                     ost->logfile = NULL;
2717                 }
2718                 av_fifo_free(ost->fifo); /* works even if fifo is not
2719                                              initialized but set to zero */
2720                 av_freep(&ost->st->codec->subtitle_header);
2721                 av_free(ost->pict_tmp.data[0]);
2722                 av_free(ost->forced_kf_pts);
2723                 if (ost->video_resample)
2724                     sws_freeContext(ost->img_resample_ctx);
2725                 if (ost->resample)
2726                     audio_resample_close(ost->resample);
2727                 if (ost->reformat_ctx)
2728                     av_audio_convert_free(ost->reformat_ctx);
2729                 av_free(ost);
2730             }
2731         }
2732         av_free(ost_table);
2733     }
2734     return ret;
2735 }
2736
2737 static int opt_format(const char *opt, const char *arg)
2738 {
2739     last_asked_format = arg;
2740     return 0;
2741 }
2742
2743 static int opt_video_rc_override_string(const char *opt, const char *arg)
2744 {
2745     video_rc_override_string = arg;
2746     return 0;
2747 }
2748
2749 static int opt_me_threshold(const char *opt, const char *arg)
2750 {
2751     me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2752     return 0;
2753 }
2754
2755 static int opt_verbose(const char *opt, const char *arg)
2756 {
2757     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2758     return 0;
2759 }
2760
2761 static int opt_frame_rate(const char *opt, const char *arg)
2762 {
2763     if (av_parse_video_rate(&frame_rate, arg) < 0) {
2764         fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2765         ffmpeg_exit(1);
2766     }
2767     return 0;
2768 }
2769
2770 static int opt_bitrate(const char *opt, const char *arg)
2771 {
2772     int codec_type = opt[0]=='a' ? AVMEDIA_TYPE_AUDIO : AVMEDIA_TYPE_VIDEO;
2773
2774     opt_default(opt, arg);
2775
2776     if (av_get_int(avcodec_opts[codec_type], "b", NULL) < 1000)
2777         fprintf(stderr, "WARNING: The bitrate parameter is set too low. It takes bits/s as argument, not kbits/s\n");
2778
2779     return 0;
2780 }
2781
2782 static int opt_frame_crop(const char *opt, const char *arg)
2783 {
2784     fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
2785     return AVERROR(EINVAL);
2786 }
2787
2788 static int opt_frame_size(const char *opt, const char *arg)
2789 {
2790     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2791         fprintf(stderr, "Incorrect frame size\n");
2792         return AVERROR(EINVAL);
2793     }
2794     return 0;
2795 }
2796
2797 static int opt_pad(const char *opt, const char *arg) {
2798     fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2799     return -1;
2800 }
2801
2802 static int opt_frame_pix_fmt(const char *opt, const char *arg)
2803 {
2804     if (strcmp(arg, "list")) {
2805         frame_pix_fmt = av_get_pix_fmt(arg);
2806         if (frame_pix_fmt == PIX_FMT_NONE) {
2807             fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2808             return AVERROR(EINVAL);
2809         }
2810     } else {
2811         show_pix_fmts();
2812         ffmpeg_exit(0);
2813     }
2814     return 0;
2815 }
2816
2817 static int opt_frame_aspect_ratio(const char *opt, const char *arg)
2818 {
2819     int x = 0, y = 0;
2820     double ar = 0;
2821     const char *p;
2822     char *end;
2823
2824     p = strchr(arg, ':');
2825     if (p) {
2826         x = strtol(arg, &end, 10);
2827         if (end == p)
2828             y = strtol(end+1, &end, 10);
2829         if (x > 0 && y > 0)
2830             ar = (double)x / (double)y;
2831     } else
2832         ar = strtod(arg, NULL);
2833
2834     if (!ar) {
2835         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2836         return AVERROR(EINVAL);
2837     }
2838     frame_aspect_ratio = ar;
2839     return 0;
2840 }
2841
2842 static int opt_metadata(const char *opt, const char *arg)
2843 {
2844     char *mid= strchr(arg, '=');
2845
2846     if(!mid){
2847         fprintf(stderr, "Missing =\n");
2848         ffmpeg_exit(1);
2849     }
2850     *mid++= 0;
2851
2852     av_dict_set(&metadata, arg, mid, 0);
2853
2854     return 0;
2855 }
2856
2857 static int opt_qscale(const char *opt, const char *arg)
2858 {
2859     video_qscale = parse_number_or_die(opt, arg, OPT_FLOAT, 0, 255);
2860     if (video_qscale == 0) {
2861         fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2862         return AVERROR(EINVAL);
2863     }
2864     return 0;
2865 }
2866
2867 static int opt_top_field_first(const char *opt, const char *arg)
2868 {
2869     top_field_first = parse_number_or_die(opt, arg, OPT_INT, 0, 1);
2870     return 0;
2871 }
2872
2873 static int opt_thread_count(const char *opt, const char *arg)
2874 {
2875     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2876 #if !HAVE_THREADS
2877     if (verbose >= 0)
2878         fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2879 #endif
2880     return 0;
2881 }
2882
2883 static int opt_audio_sample_fmt(const char *opt, const char *arg)
2884 {
2885     if (strcmp(arg, "list")) {
2886         audio_sample_fmt = av_get_sample_fmt(arg);
2887         if (audio_sample_fmt == AV_SAMPLE_FMT_NONE) {
2888             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg);
2889             return AVERROR(EINVAL);
2890         }
2891     } else {
2892         int i;
2893         char fmt_str[128];
2894         for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
2895             printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
2896         ffmpeg_exit(0);
2897     }
2898     return 0;
2899 }
2900
2901 static int opt_audio_rate(const char *opt, const char *arg)
2902 {
2903     audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2904     return 0;
2905 }
2906
2907 static int opt_audio_channels(const char *opt, const char *arg)
2908 {
2909     audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2910     return 0;
2911 }
2912
2913 static int opt_video_channel(const char *opt, const char *arg)
2914 {
2915     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
2916     opt_default("channel", arg);
2917     return 0;
2918 }
2919
2920 static int opt_video_standard(const char *opt, const char *arg)
2921 {
2922     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
2923     opt_default("standard", arg);
2924     return 0;
2925 }
2926
2927 static int opt_codec(int *pstream_copy, char **pcodec_name,
2928                       int codec_type, const char *arg)
2929 {
2930     av_freep(pcodec_name);
2931     if (!strcmp(arg, "copy")) {
2932         *pstream_copy = 1;
2933     } else {
2934         *pcodec_name = av_strdup(arg);
2935     }
2936     return 0;
2937 }
2938
2939 static int opt_audio_codec(const char *opt, const char *arg)
2940 {
2941     return opt_codec(&audio_stream_copy, &audio_codec_name, AVMEDIA_TYPE_AUDIO, arg);
2942 }
2943
2944 static int opt_video_codec(const char *opt, const char *arg)
2945 {
2946     return opt_codec(&video_stream_copy, &video_codec_name, AVMEDIA_TYPE_VIDEO, arg);
2947 }
2948
2949 static int opt_subtitle_codec(const char *opt, const char *arg)
2950 {
2951     return opt_codec(&subtitle_stream_copy, &subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, arg);
2952 }
2953
2954 static int opt_data_codec(const char *opt, const char *arg)
2955 {
2956     return opt_codec(&data_stream_copy, &data_codec_name, AVMEDIA_TYPE_DATA, arg);
2957 }
2958
2959 static int opt_codec_tag(const char *opt, const char *arg)
2960 {
2961     char *tail;
2962     uint32_t *codec_tag;
2963
2964     codec_tag = !strcmp(opt, "atag") ? &audio_codec_tag :
2965                 !strcmp(opt, "vtag") ? &video_codec_tag :
2966                 !strcmp(opt, "stag") ? &subtitle_codec_tag : NULL;
2967     if (!codec_tag)
2968         return -1;
2969
2970     *codec_tag = strtol(arg, &tail, 0);
2971     if (!tail || *tail)
2972         *codec_tag = AV_RL32(arg);
2973
2974     return 0;
2975 }
2976
2977 static int opt_map(const char *opt, const char *arg)
2978 {
2979     StreamMap *m;
2980     char *p;
2981
2982     stream_maps = grow_array(stream_maps, sizeof(*stream_maps), &nb_stream_maps, nb_stream_maps + 1);
2983     m = &stream_maps[nb_stream_maps-1];
2984
2985     m->file_index = strtol(arg, &p, 0);
2986     if (*p)
2987         p++;
2988
2989     m->stream_index = strtol(p, &p, 0);
2990     if (*p) {
2991         p++;
2992         m->sync_file_index = strtol(p, &p, 0);
2993         if (*p)
2994             p++;
2995         m->sync_stream_index = strtol(p, &p, 0);
2996     } else {
2997         m->sync_file_index = m->file_index;
2998         m->sync_stream_index = m->stream_index;
2999     }
3000     return 0;
3001 }
3002
3003 static void parse_meta_type(char *arg, char *type, int *index, char **endptr)
3004 {
3005     *endptr = arg;
3006     if (*arg == ',') {
3007         *type = *(++arg);
3008         switch (*arg) {
3009         case 'g':
3010             break;
3011         case 's':
3012         case 'c':
3013         case 'p':
3014             *index = strtol(++arg, endptr, 0);
3015             break;
3016         default:
3017             fprintf(stderr, "Invalid metadata type %c.\n", *arg);
3018             ffmpeg_exit(1);
3019         }
3020     } else
3021         *type = 'g';
3022 }
3023
3024 static int opt_map_metadata(const char *opt, const char *arg)
3025 {
3026     MetadataMap *m, *m1;
3027     char *p;
3028
3029     meta_data_maps = grow_array(meta_data_maps, sizeof(*meta_data_maps),
3030                                 &nb_meta_data_maps, nb_meta_data_maps + 1);
3031
3032     m = &meta_data_maps[nb_meta_data_maps - 1][0];
3033     m->file = strtol(arg, &p, 0);
3034     parse_meta_type(p, &m->type, &m->index, &p);
3035     if (*p)
3036         p++;
3037
3038     m1 = &meta_data_maps[nb_meta_data_maps - 1][1];
3039     m1->file = strtol(p, &p, 0);
3040     parse_meta_type(p, &m1->type, &m1->index, &p);
3041
3042     if (m->type == 'g' || m1->type == 'g')
3043         metadata_global_autocopy = 0;
3044     if (m->type == 's' || m1->type == 's')
3045         metadata_streams_autocopy = 0;
3046     if (m->type == 'c' || m1->type == 'c')
3047         metadata_chapters_autocopy = 0;
3048
3049     return 0;
3050 }
3051
3052 static int opt_map_meta_data(const char *opt, const char *arg)
3053 {
3054     fprintf(stderr, "-map_meta_data is deprecated and will be removed soon. "
3055                     "Use -map_metadata instead.\n");
3056     return opt_map_metadata(opt, arg);
3057 }
3058
3059 static int opt_map_chapters(const char *opt, const char *arg)
3060 {
3061     ChapterMap *c;
3062     char *p;
3063
3064     chapter_maps = grow_array(chapter_maps, sizeof(*chapter_maps), &nb_chapter_maps,
3065                               nb_chapter_maps + 1);
3066     c = &chapter_maps[nb_chapter_maps - 1];
3067     c->out_file = strtol(arg, &p, 0);
3068     if (*p)
3069         p++;
3070
3071     c->in_file = strtol(p, &p, 0);
3072     return 0;
3073 }
3074
3075 static int opt_input_ts_scale(const char *opt, const char *arg)
3076 {
3077     unsigned int stream;
3078     double scale;
3079     char *p;
3080
3081     stream = strtol(arg, &p, 0);
3082     if (*p)
3083         p++;
3084     scale= strtod(p, &p);
3085
3086     if(stream >= MAX_STREAMS)
3087         ffmpeg_exit(1);
3088
3089     ts_scale = grow_array(ts_scale, sizeof(*ts_scale), &nb_ts_scale, stream + 1);
3090     ts_scale[stream] = scale;
3091     return 0;
3092 }
3093
3094 static int opt_recording_time(const char *opt, const char *arg)
3095 {
3096     recording_time = parse_time_or_die(opt, arg, 1);
3097     return 0;
3098 }
3099
3100 static int opt_start_time(const char *opt, const char *arg)
3101 {
3102     start_time = parse_time_or_die(opt, arg, 1);
3103     return 0;
3104 }
3105
3106 static int opt_recording_timestamp(const char *opt, const char *arg)
3107 {
3108     char buf[128];
3109     int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
3110     struct tm time = *gmtime((time_t*)&recording_timestamp);
3111     strftime(buf, sizeof(buf), "creation_time=%FT%T%z", &time);
3112     opt_metadata("metadata", buf);
3113
3114     av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
3115                                  "tag instead.\n", opt);
3116     return 0;
3117 }
3118
3119 static int opt_input_ts_offset(const char *opt, const char *arg)
3120 {
3121     input_ts_offset = parse_time_or_die(opt, arg, 1);
3122     return 0;
3123 }
3124
3125 static enum CodecID find_codec_or_die(const char *name, int type, int encoder, int strict)
3126 {
3127     const char *codec_string = encoder ? "encoder" : "decoder";
3128     AVCodec *codec;
3129
3130     if(!name)
3131         return CODEC_ID_NONE;
3132     codec = encoder ?
3133         avcodec_find_encoder_by_name(name) :
3134         avcodec_find_decoder_by_name(name);
3135     if(!codec) {
3136         fprintf(stderr, "Unknown %s '%s'\n", codec_string, name);
3137         ffmpeg_exit(1);
3138     }
3139     if(codec->type != type) {
3140         fprintf(stderr, "Invalid %s type '%s'\n", codec_string, name);
3141         ffmpeg_exit(1);
3142     }
3143     if(codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
3144        strict > FF_COMPLIANCE_EXPERIMENTAL) {
3145         fprintf(stderr, "%s '%s' is experimental and might produce bad "
3146                 "results.\nAdd '-strict experimental' if you want to use it.\n",
3147                 codec_string, codec->name);
3148         codec = encoder ?
3149             avcodec_find_encoder(codec->id) :
3150             avcodec_find_decoder(codec->id);
3151         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
3152             fprintf(stderr, "Or use the non experimental %s '%s'.\n",
3153                     codec_string, codec->name);
3154         ffmpeg_exit(1);
3155     }
3156     return codec->id;
3157 }
3158
3159 static int opt_input_file(const char *opt, const char *filename)
3160 {
3161     AVFormatContext *ic;
3162     AVInputFormat *file_iformat = NULL;
3163     int err, i, ret, rfps, rfps_base;
3164     int64_t timestamp;
3165     uint8_t buf[128];
3166
3167     if (last_asked_format) {
3168         if (!(file_iformat = av_find_input_format(last_asked_format))) {
3169             fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
3170             ffmpeg_exit(1);
3171         }
3172         last_asked_format = NULL;
3173     }
3174
3175     if (!strcmp(filename, "-"))
3176         filename = "pipe:";
3177
3178     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3179                     !strcmp(filename, "/dev/stdin");
3180
3181     /* get default parameters from command line */
3182     ic = avformat_alloc_context();
3183     if (!ic) {
3184         print_error(filename, AVERROR(ENOMEM));
3185         ffmpeg_exit(1);
3186     }
3187     if (audio_sample_rate) {
3188         snprintf(buf, sizeof(buf), "%d", audio_sample_rate);
3189         av_dict_set(&format_opts, "sample_rate", buf, 0);
3190     }
3191     if (audio_channels) {
3192         snprintf(buf, sizeof(buf), "%d", audio_channels);
3193         av_dict_set(&format_opts, "channels", buf, 0);
3194     }
3195     if (frame_rate.num) {
3196         snprintf(buf, sizeof(buf), "%d/%d", frame_rate.num, frame_rate.den);
3197         av_dict_set(&format_opts, "framerate", buf, 0);
3198     }
3199     if (frame_width && frame_height) {
3200         snprintf(buf, sizeof(buf), "%dx%d", frame_width, frame_height);
3201         av_dict_set(&format_opts, "video_size", buf, 0);
3202     }
3203     if (frame_pix_fmt != PIX_FMT_NONE)
3204         av_dict_set(&format_opts, "pixel_format", av_get_pix_fmt_name(frame_pix_fmt), 0);
3205
3206     ic->video_codec_id   =
3207         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0,
3208                           avcodec_opts[AVMEDIA_TYPE_VIDEO   ]->strict_std_compliance);
3209     ic->audio_codec_id   =
3210         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0,
3211                           avcodec_opts[AVMEDIA_TYPE_AUDIO   ]->strict_std_compliance);
3212     ic->subtitle_codec_id=
3213         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0,
3214                           avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->strict_std_compliance);
3215     ic->flags |= AVFMT_FLAG_NONBLOCK;
3216
3217     /* open the input file with generic libav function */
3218     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3219     if (err < 0) {
3220         print_error(filename, err);
3221         ffmpeg_exit(1);
3222     }
3223     assert_avoptions(format_opts);
3224
3225     if(opt_programid) {
3226         int i, j;
3227         int found=0;
3228         for(i=0; i<ic->nb_streams; i++){
3229             ic->streams[i]->discard= AVDISCARD_ALL;
3230         }
3231         for(i=0; i<ic->nb_programs; i++){
3232             AVProgram *p= ic->programs[i];
3233             if(p->id != opt_programid){
3234                 p->discard = AVDISCARD_ALL;
3235             }else{
3236                 found=1;
3237                 for(j=0; j<p->nb_stream_indexes; j++){
3238                     ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
3239                 }
3240             }
3241         }
3242         if(!found){
3243             fprintf(stderr, "Specified program id not found\n");
3244             ffmpeg_exit(1);
3245         }
3246         opt_programid=0;
3247     }
3248
3249     if (loop_input) {
3250         av_log(NULL, AV_LOG_WARNING, "-loop_input is deprecated, use -loop 1\n");
3251         ic->loop_input = loop_input;
3252     }
3253
3254     /* Set AVCodecContext options so they will be seen by av_find_stream_info() */
3255     for (i = 0; i < ic->nb_streams; i++) {
3256         AVCodecContext *dec = ic->streams[i]->codec;
3257         switch (dec->codec_type) {
3258         case AVMEDIA_TYPE_AUDIO:
3259             set_context_opts(dec, avcodec_opts[AVMEDIA_TYPE_AUDIO],
3260                              AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM,
3261                              NULL);
3262             break;
3263         case AVMEDIA_TYPE_VIDEO:
3264             set_context_opts(dec, avcodec_opts[AVMEDIA_TYPE_VIDEO],
3265                              AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM,
3266                              NULL);
3267             break;
3268         }
3269     }
3270
3271     /* If not enough info to get the stream parameters, we decode the
3272        first frames to get it. (used in mpeg case for example) */
3273     ret = av_find_stream_info(ic);
3274     if (ret < 0 && verbose >= 0) {
3275         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3276         av_close_input_file(ic);
3277         ffmpeg_exit(1);
3278     }
3279
3280     timestamp = start_time;
3281     /* add the stream start time */
3282     if (ic->start_time != AV_NOPTS_VALUE)
3283         timestamp += ic->start_time;
3284
3285     /* if seeking requested, we execute it */
3286     if (start_time != 0) {
3287         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3288         if (ret < 0) {
3289             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3290                     filename, (double)timestamp / AV_TIME_BASE);
3291         }
3292         /* reset seek info */
3293         start_time = 0;
3294     }
3295
3296     /* update the current parameters so that they match the one of the input stream */
3297     for(i=0;i<ic->nb_streams;i++) {
3298         AVStream *st = ic->streams[i];
3299         AVCodecContext *dec = st->codec;
3300         InputStream *ist;
3301
3302         dec->thread_count = thread_count;
3303
3304         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3305         ist = &input_streams[nb_input_streams - 1];
3306         ist->st = st;
3307         ist->file_index = nb_input_files;
3308         ist->discard = 1;
3309
3310         if (i < nb_ts_scale)
3311             ist->ts_scale = ts_scale[i];
3312
3313         switch (dec->codec_type) {
3314         case AVMEDIA_TYPE_AUDIO:
3315             ist->dec = avcodec_find_decoder_by_name(audio_codec_name);
3316             set_context_opts(dec, avcodec_opts[AVMEDIA_TYPE_AUDIO], AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM, ist->dec);
3317             if(audio_disable)
3318                 st->discard= AVDISCARD_ALL;
3319             break;
3320         case AVMEDIA_TYPE_VIDEO:
3321             ist->dec = avcodec_find_decoder_by_name(video_codec_name);
3322             set_context_opts(dec, avcodec_opts[AVMEDIA_TYPE_VIDEO], AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM, ist->dec);
3323             rfps      = ic->streams[i]->r_frame_rate.num;
3324             rfps_base = ic->streams[i]->r_frame_rate.den;
3325             if (dec->lowres) {
3326                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3327                 dec->height >>= dec->lowres;
3328                 dec->width  >>= dec->lowres;
3329             }
3330             if(me_threshold)
3331                 dec->debug |= FF_DEBUG_MV;
3332
3333             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3334
3335                 if (verbose >= 0)
3336                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3337                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3338
3339                     (float)rfps / rfps_base, rfps, rfps_base);
3340             }
3341
3342             if(video_disable)
3343                 st->discard= AVDISCARD_ALL;
3344             else if(video_discard)
3345                 st->discard= video_discard;
3346             break;
3347         case AVMEDIA_TYPE_DATA:
3348             break;
3349         case AVMEDIA_TYPE_SUBTITLE:
3350             ist->dec = avcodec_find_decoder_by_name(subtitle_codec_name);
3351             if(subtitle_disable)
3352                 st->discard = AVDISCARD_ALL;
3353             break;
3354         case AVMEDIA_TYPE_ATTACHMENT:
3355         case AVMEDIA_TYPE_UNKNOWN:
3356             break;
3357         default:
3358             abort();
3359         }
3360     }
3361
3362     /* dump the file content */
3363     if (verbose >= 0)
3364         av_dump_format(ic, nb_input_files, filename, 0);
3365
3366     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3367     input_files[nb_input_files - 1].ctx        = ic;
3368     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3369     input_files[nb_input_files - 1].ts_offset  = input_ts_offset - (copy_ts ? 0 : timestamp);
3370
3371     frame_rate    = (AVRational){0, 0};
3372     frame_pix_fmt = PIX_FMT_NONE;
3373     frame_height = 0;
3374     frame_width  = 0;
3375     audio_sample_rate = 0;
3376     audio_channels    = 0;
3377     audio_sample_fmt  = AV_SAMPLE_FMT_NONE;
3378     av_freep(&ts_scale);
3379     nb_ts_scale = 0;
3380
3381     av_freep(&video_codec_name);
3382     av_freep(&audio_codec_name);
3383     av_freep(&subtitle_codec_name);
3384     uninit_opts();
3385     init_opts();
3386     return 0;
3387 }
3388
3389 static void check_inputs(int *has_video_ptr,
3390                          int *has_audio_ptr,
3391                          int *has_subtitle_ptr,
3392                          int *has_data_ptr)
3393 {
3394     int has_video, has_audio, has_subtitle, has_data, i, j;
3395     AVFormatContext *ic;
3396
3397     has_video = 0;
3398     has_audio = 0;
3399     has_subtitle = 0;
3400     has_data = 0;
3401
3402     for(j=0;j<nb_input_files;j++) {
3403         ic = input_files[j].ctx;
3404         for(i=0;i<ic->nb_streams;i++) {
3405             AVCodecContext *enc = ic->streams[i]->codec;
3406             switch(enc->codec_type) {
3407             case AVMEDIA_TYPE_AUDIO:
3408                 has_audio = 1;
3409                 break;
3410             case AVMEDIA_TYPE_VIDEO:
3411                 has_video = 1;
3412                 break;
3413             case AVMEDIA_TYPE_SUBTITLE:
3414                 has_subtitle = 1;
3415                 break;
3416             case AVMEDIA_TYPE_DATA:
3417             case AVMEDIA_TYPE_ATTACHMENT:
3418             case AVMEDIA_TYPE_UNKNOWN:
3419                 has_data = 1;
3420                 break;
3421             default:
3422                 abort();
3423             }
3424         }
3425     }
3426     *has_video_ptr = has_video;
3427     *has_audio_ptr = has_audio;
3428     *has_subtitle_ptr = has_subtitle;
3429     *has_data_ptr = has_data;
3430 }
3431
3432 static void new_video_stream(AVFormatContext *oc, int file_idx)
3433 {
3434     AVStream *st;
3435     OutputStream *ost;
3436     AVCodecContext *video_enc;
3437     enum CodecID codec_id = CODEC_ID_NONE;
3438     AVCodec *codec= NULL;
3439
3440     if(!video_stream_copy){
3441         if (video_codec_name) {
3442             codec_id = find_codec_or_die(video_codec_name, AVMEDIA_TYPE_VIDEO, 1,
3443                                          avcodec_opts[AVMEDIA_TYPE_VIDEO]->strict_std_compliance);
3444             codec = avcodec_find_encoder_by_name(video_codec_name);
3445         } else {
3446             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_VIDEO);
3447             codec = avcodec_find_encoder(codec_id);
3448         }
3449     }
3450
3451     ost = new_output_stream(oc, file_idx, codec);
3452     st  = ost->st;
3453     if (!video_stream_copy) {
3454         ost->frame_aspect_ratio = frame_aspect_ratio;
3455         frame_aspect_ratio = 0;
3456 #if CONFIG_AVFILTER
3457         ost->avfilter= vfilters;
3458         vfilters = NULL;
3459 #endif
3460     }
3461
3462     ost->bitstream_filters = video_bitstream_filters;
3463     video_bitstream_filters= NULL;
3464
3465     st->codec->thread_count= thread_count;
3466
3467     video_enc = st->codec;
3468
3469     if(video_codec_tag)
3470         video_enc->codec_tag= video_codec_tag;
3471
3472     if(oc->oformat->flags & AVFMT_GLOBALHEADER) {
3473         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3474         avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3475     }
3476
3477     if (video_stream_copy) {
3478         st->stream_copy = 1;
3479         video_enc->codec_type = AVMEDIA_TYPE_VIDEO;
3480         video_enc->sample_aspect_ratio =
3481         st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3482     } else {
3483         const char *p;
3484         int i;
3485
3486         if (frame_rate.num)
3487             ost->frame_rate = frame_rate;
3488         video_enc->codec_id = codec_id;
3489         set_context_opts(video_enc, avcodec_opts[AVMEDIA_TYPE_VIDEO], AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3490
3491         video_enc->width = frame_width;
3492         video_enc->height = frame_height;
3493         video_enc->pix_fmt = frame_pix_fmt;
3494         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3495
3496         if (intra_only)
3497             video_enc->gop_size = 0;
3498         if (video_qscale || same_quality) {
3499             video_enc->flags |= CODEC_FLAG_QSCALE;
3500             video_enc->global_quality = FF_QP2LAMBDA * video_qscale;
3501         }
3502
3503         if(intra_matrix)
3504             video_enc->intra_matrix = intra_matrix;
3505         if(inter_matrix)
3506             video_enc->inter_matrix = inter_matrix;
3507
3508         p= video_rc_override_string;
3509         for(i=0; p; i++){
3510             int start, end, q;
3511             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3512             if(e!=3){
3513                 fprintf(stderr, "error parsing rc_override\n");
3514                 ffmpeg_exit(1);
3515             }
3516             video_enc->rc_override=
3517                 av_realloc(video_enc->rc_override,
3518                            sizeof(RcOverride)*(i+1));
3519             video_enc->rc_override[i].start_frame= start;
3520             video_enc->rc_override[i].end_frame  = end;
3521             if(q>0){
3522                 video_enc->rc_override[i].qscale= q;
3523                 video_enc->rc_override[i].quality_factor= 1.0;
3524             }
3525             else{
3526                 video_enc->rc_override[i].qscale= 0;
3527                 video_enc->rc_override[i].quality_factor= -q/100.0;
3528             }
3529             p= strchr(p, '/');
3530             if(p) p++;
3531         }
3532         video_enc->rc_override_count=i;
3533         if (!video_enc->rc_initial_buffer_occupancy)
3534             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3535         video_enc->me_threshold= me_threshold;
3536         video_enc->intra_dc_precision= intra_dc_precision - 8;
3537
3538         if (do_psnr)
3539             video_enc->flags|= CODEC_FLAG_PSNR;
3540
3541         /* two pass mode */
3542         if (do_pass) {
3543             if (do_pass == 1) {
3544                 video_enc->flags |= CODEC_FLAG_PASS1;
3545             } else {
3546                 video_enc->flags |= CODEC_FLAG_PASS2;
3547             }
3548         }
3549
3550         if (forced_key_frames)
3551             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3552     }
3553     if (video_language) {
3554         av_dict_set(&st->metadata, "language", video_language, 0);
3555         av_freep(&video_language);
3556     }
3557
3558     /* reset some key parameters */
3559     video_disable = 0;
3560     av_freep(&video_codec_name);
3561     av_freep(&forced_key_frames);
3562     video_stream_copy = 0;
3563     frame_pix_fmt = PIX_FMT_NONE;
3564 }
3565
3566 static void new_audio_stream(AVFormatContext *oc, int file_idx)
3567 {
3568     AVStream *st;
3569     OutputStream *ost;
3570     AVCodec *codec= NULL;
3571     AVCodecContext *audio_enc;
3572     enum CodecID codec_id = CODEC_ID_NONE;
3573
3574     if(!audio_stream_copy){
3575         if (audio_codec_name) {
3576             codec_id = find_codec_or_die(audio_codec_name, AVMEDIA_TYPE_AUDIO, 1,
3577                                          avcodec_opts[AVMEDIA_TYPE_AUDIO]->strict_std_compliance);
3578             codec = avcodec_find_encoder_by_name(audio_codec_name);
3579         } else {
3580             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_AUDIO);
3581             codec = avcodec_find_encoder(codec_id);
3582         }
3583     }
3584     ost = new_output_stream(oc, file_idx, codec);
3585     st  = ost->st;
3586
3587     ost->bitstream_filters = audio_bitstream_filters;
3588     audio_bitstream_filters= NULL;
3589
3590     st->codec->thread_count= thread_count;
3591
3592     audio_enc = st->codec;
3593     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3594
3595     if(audio_codec_tag)
3596         audio_enc->codec_tag= audio_codec_tag;
3597
3598     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3599         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3600         avcodec_opts[AVMEDIA_TYPE_AUDIO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3601     }
3602     if (audio_stream_copy) {
3603         st->stream_copy = 1;
3604     } else {
3605         audio_enc->codec_id = codec_id;
3606         set_context_opts(audio_enc, avcodec_opts[AVMEDIA_TYPE_AUDIO], AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3607
3608         if (audio_qscale > QSCALE_NONE) {
3609             audio_enc->flags |= CODEC_FLAG_QSCALE;
3610             audio_enc->global_quality = FF_QP2LAMBDA * audio_qscale;
3611         }
3612         if (audio_channels)
3613             audio_enc->channels = audio_channels;
3614         if (audio_sample_fmt != AV_SAMPLE_FMT_NONE)
3615             audio_enc->sample_fmt = audio_sample_fmt;
3616         if (audio_sample_rate)
3617             audio_enc->sample_rate = audio_sample_rate;
3618     }
3619     if (audio_language) {
3620         av_dict_set(&st->metadata, "language", audio_language, 0);
3621         av_freep(&audio_language);
3622     }
3623
3624     /* reset some key parameters */
3625     audio_disable = 0;
3626     av_freep(&audio_codec_name);
3627     audio_stream_copy = 0;
3628 }
3629
3630 static void new_data_stream(AVFormatContext *oc, int file_idx)
3631 {
3632     AVStream *st;
3633     OutputStream *ost;
3634     AVCodecContext *data_enc;
3635
3636     ost = new_output_stream(oc, file_idx, NULL);
3637     st  = ost->st;
3638     data_enc = st->codec;
3639     if (!data_stream_copy) {
3640         fprintf(stderr, "Data stream encoding not supported yet (only streamcopy)\n");
3641         ffmpeg_exit(1);
3642     }