AVOptions: fix av_set_string3() doxy to match reality.
[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
106 static const char *last_asked_format = NULL;
107 static double *ts_scale;
108 static int  nb_ts_scale;
109
110 static AVFormatContext *output_files[MAX_FILES];
111 static AVDictionary *output_opts[MAX_FILES];
112 static int nb_output_files = 0;
113
114 static StreamMap *stream_maps = NULL;
115 static int nb_stream_maps;
116
117 /* first item specifies output metadata, second is input */
118 static MetadataMap (*meta_data_maps)[2] = NULL;
119 static int nb_meta_data_maps;
120 static int metadata_global_autocopy   = 1;
121 static int metadata_streams_autocopy  = 1;
122 static int metadata_chapters_autocopy = 1;
123
124 static ChapterMap *chapter_maps = NULL;
125 static int nb_chapter_maps;
126
127 /* indexed by output file stream index */
128 static int *streamid_map = NULL;
129 static int nb_streamid_map = 0;
130
131 static int frame_width  = 0;
132 static int frame_height = 0;
133 static float frame_aspect_ratio = 0;
134 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
135 static enum AVSampleFormat audio_sample_fmt = AV_SAMPLE_FMT_NONE;
136 static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
137 static AVRational frame_rate;
138 static float video_qscale = 0;
139 static uint16_t *intra_matrix = NULL;
140 static uint16_t *inter_matrix = NULL;
141 static const char *video_rc_override_string=NULL;
142 static int video_disable = 0;
143 static int video_discard = 0;
144 static char *video_codec_name = NULL;
145 static unsigned int video_codec_tag = 0;
146 static char *video_language = NULL;
147 static int same_quality = 0;
148 static int do_deinterlace = 0;
149 static int top_field_first = -1;
150 static int me_threshold = 0;
151 static int intra_dc_precision = 8;
152 static int loop_input = 0;
153 static int loop_output = AVFMT_NOOUTPUTLOOP;
154 static int qp_hist = 0;
155 #if CONFIG_AVFILTER
156 static char *vfilters = NULL;
157 #endif
158
159 static int intra_only = 0;
160 static int audio_sample_rate = 0;
161 #define QSCALE_NONE -99999
162 static float audio_qscale = QSCALE_NONE;
163 static int audio_disable = 0;
164 static int audio_channels = 0;
165 static char  *audio_codec_name = NULL;
166 static unsigned int audio_codec_tag = 0;
167 static char *audio_language = NULL;
168
169 static int subtitle_disable = 0;
170 static char *subtitle_codec_name = NULL;
171 static char *subtitle_language = NULL;
172 static unsigned int subtitle_codec_tag = 0;
173
174 static int data_disable = 0;
175 static char *data_codec_name = NULL;
176 static unsigned int data_codec_tag = 0;
177
178 static float mux_preload= 0.5;
179 static float mux_max_delay= 0.7;
180
181 static int64_t recording_time = INT64_MAX;
182 static int64_t start_time = 0;
183 static int64_t input_ts_offset = 0;
184 static int file_overwrite = 0;
185 static AVDictionary *metadata;
186 static int do_benchmark = 0;
187 static int do_hex_dump = 0;
188 static int do_pkt_dump = 0;
189 static int do_psnr = 0;
190 static int do_pass = 0;
191 static char *pass_logfilename_prefix = NULL;
192 static int audio_stream_copy = 0;
193 static int video_stream_copy = 0;
194 static int subtitle_stream_copy = 0;
195 static int data_stream_copy = 0;
196 static int video_sync_method= -1;
197 static int audio_sync_method= 0;
198 static float audio_drift_threshold= 0.1;
199 static int copy_ts= 0;
200 static int copy_tb;
201 static int opt_shortest = 0;
202 static char *vstats_filename;
203 static FILE *vstats_file;
204 static int opt_programid = 0;
205 static int copy_initial_nonkeyframes = 0;
206
207 static int rate_emu = 0;
208
209 static int audio_volume = 256;
210
211 static int exit_on_error = 0;
212 static int using_stdin = 0;
213 static int verbose = 1;
214 static int thread_count= 1;
215 static int64_t video_size = 0;
216 static int64_t audio_size = 0;
217 static int64_t extra_size = 0;
218 static int nb_frames_dup = 0;
219 static int nb_frames_drop = 0;
220 static int input_sync;
221 static uint64_t limit_filesize = 0;
222 static int force_fps = 0;
223 static char *forced_key_frames = NULL;
224
225 static float dts_delta_threshold = 10;
226
227 static int64_t timer_start;
228
229 static uint8_t *audio_buf;
230 static uint8_t *audio_out;
231 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
232
233 static short *samples;
234
235 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
236 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
237 static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL;
238
239 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
240
241 struct InputStream;
242
243 typedef struct OutputStream {
244     int file_index;          /* file index */
245     int index;               /* stream index in the output file */
246     int source_index;        /* InputStream index */
247     AVStream *st;            /* stream in the output file */
248     int encoding_needed;     /* true if encoding needed for this stream */
249     int frame_number;
250     /* input pts and corresponding output pts
251        for A/V sync */
252     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
253     struct InputStream *sync_ist; /* input stream to sync against */
254     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
255     AVBitStreamFilterContext *bitstream_filters;
256     AVCodec *enc;
257
258     /* video only */
259     int video_resample;
260     AVFrame pict_tmp;      /* temporary image for resampling */
261     struct SwsContext *img_resample_ctx; /* for image resampling */
262     int resample_height;
263     int resample_width;
264     int resample_pix_fmt;
265     AVRational frame_rate;
266
267     float frame_aspect_ratio;
268
269     /* forced key frames */
270     int64_t *forced_kf_pts;
271     int forced_kf_count;
272     int forced_kf_index;
273
274     /* audio only */
275     int audio_resample;
276     ReSampleContext *resample; /* for audio resampling */
277     int resample_sample_fmt;
278     int resample_channels;
279     int resample_sample_rate;
280     int reformat_pair;
281     AVAudioConvert *reformat_ctx;
282     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
283     FILE *logfile;
284
285 #if CONFIG_AVFILTER
286     AVFilterContext *output_video_filter;
287     AVFilterContext *input_video_filter;
288     AVFilterBufferRef *picref;
289     char *avfilter;
290     AVFilterGraph *graph;
291 #endif
292
293    int sws_flags;
294    AVDictionary *opts;
295 } OutputStream;
296
297 static OutputStream **output_streams_for_file[MAX_FILES] = { NULL };
298 static int nb_output_streams_for_file[MAX_FILES] = { 0 };
299
300 typedef struct InputStream {
301     int file_index;
302     AVStream *st;
303     int discard;             /* true if stream data should be discarded */
304     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
305     AVCodec *dec;
306
307     int64_t       start;     /* time when read started */
308     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
309                                 is not defined */
310     int64_t       pts;       /* current pts */
311     PtsCorrectionContext pts_ctx;
312     double ts_scale;
313     int is_start;            /* is 1 at the start and after a discontinuity */
314     int showed_multi_packet_warning;
315     int is_past_recording_time;
316     AVDictionary *opts;
317 } InputStream;
318
319 typedef struct InputFile {
320     AVFormatContext *ctx;
321     int eof_reached;      /* true if eof reached */
322     int ist_index;        /* index of first stream in ist_table */
323     int buffer_size;      /* current total buffer size */
324     int64_t ts_offset;
325 } InputFile;
326
327 static InputStream *input_streams = NULL;
328 static int         nb_input_streams = 0;
329 static InputFile   *input_files   = NULL;
330 static int         nb_input_files   = 0;
331
332 #if CONFIG_AVFILTER
333
334 static int configure_video_filters(InputStream *ist, OutputStream *ost)
335 {
336     AVFilterContext *last_filter, *filter;
337     /** filter graph containing all filters including input & output */
338     AVCodecContext *codec = ost->st->codec;
339     AVCodecContext *icodec = ist->st->codec;
340     FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
341     AVRational sample_aspect_ratio;
342     char args[255];
343     int ret;
344
345     ost->graph = avfilter_graph_alloc();
346
347     if (ist->st->sample_aspect_ratio.num){
348         sample_aspect_ratio = ist->st->sample_aspect_ratio;
349     }else
350         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
351
352     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
353              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
354              sample_aspect_ratio.num, sample_aspect_ratio.den);
355
356     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
357                                        "src", args, NULL, ost->graph);
358     if (ret < 0)
359         return ret;
360     ret = avfilter_graph_create_filter(&ost->output_video_filter, &ffsink,
361                                        "out", NULL, &ffsink_ctx, ost->graph);
362     if (ret < 0)
363         return ret;
364     last_filter = ost->input_video_filter;
365
366     if (codec->width  != icodec->width || codec->height != icodec->height) {
367         snprintf(args, 255, "%d:%d:flags=0x%X",
368                  codec->width,
369                  codec->height,
370                  ost->sws_flags);
371         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
372                                                 NULL, args, NULL, ost->graph)) < 0)
373             return ret;
374         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
375             return ret;
376         last_filter = filter;
377     }
378
379     snprintf(args, sizeof(args), "flags=0x%X", ost->sws_flags);
380     ost->graph->scale_sws_opts = av_strdup(args);
381
382     if (ost->avfilter) {
383         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
384         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
385
386         outputs->name    = av_strdup("in");
387         outputs->filter_ctx = last_filter;
388         outputs->pad_idx = 0;
389         outputs->next    = NULL;
390
391         inputs->name    = av_strdup("out");
392         inputs->filter_ctx = ost->output_video_filter;
393         inputs->pad_idx = 0;
394         inputs->next    = NULL;
395
396         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, inputs, outputs, NULL)) < 0)
397             return ret;
398         av_freep(&ost->avfilter);
399     } else {
400         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
401             return ret;
402     }
403
404     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
405         return ret;
406
407     codec->width  = ost->output_video_filter->inputs[0]->w;
408     codec->height = ost->output_video_filter->inputs[0]->h;
409     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
410         ost->frame_aspect_ratio ? // overriden by the -aspect cli option
411         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
412         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
413
414     return 0;
415 }
416 #endif /* CONFIG_AVFILTER */
417
418 static void term_exit(void)
419 {
420     av_log(NULL, AV_LOG_QUIET, "");
421 }
422
423 static volatile int received_sigterm = 0;
424 static volatile int received_nb_signals = 0;
425
426 static void
427 sigterm_handler(int sig)
428 {
429     received_sigterm = sig;
430     received_nb_signals++;
431     term_exit();
432 }
433
434 static void term_init(void)
435 {
436     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
437     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
438 #ifdef SIGXCPU
439     signal(SIGXCPU, sigterm_handler);
440 #endif
441 }
442
443 static int decode_interrupt_cb(void)
444 {
445     return received_nb_signals > 1;
446 }
447
448 static int ffmpeg_exit(int ret)
449 {
450     int i;
451
452     /* close files */
453     for(i=0;i<nb_output_files;i++) {
454         AVFormatContext *s = output_files[i];
455         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
456             avio_close(s->pb);
457         avformat_free_context(s);
458         av_free(output_streams_for_file[i]);
459         av_dict_free(&output_opts[i]);
460     }
461     for(i=0;i<nb_input_files;i++) {
462         av_close_input_file(input_files[i].ctx);
463     }
464     for (i = 0; i < nb_input_streams; i++)
465         av_dict_free(&input_streams[i].opts);
466
467     av_free(intra_matrix);
468     av_free(inter_matrix);
469
470     if (vstats_file)
471         fclose(vstats_file);
472     av_free(vstats_filename);
473
474     av_free(streamid_map);
475     av_free(stream_maps);
476     av_free(meta_data_maps);
477
478     av_freep(&input_streams);
479     av_freep(&input_files);
480
481     av_free(video_codec_name);
482     av_free(audio_codec_name);
483     av_free(subtitle_codec_name);
484     av_free(data_codec_name);
485
486     uninit_opts();
487     av_free(audio_buf);
488     av_free(audio_out);
489     allocated_audio_buf_size= allocated_audio_out_size= 0;
490     av_free(samples);
491
492 #if CONFIG_AVFILTER
493     avfilter_uninit();
494 #endif
495
496     if (received_sigterm) {
497         fprintf(stderr,
498             "Received signal %d: terminating.\n",
499             (int) received_sigterm);
500         exit (255);
501     }
502
503     exit(ret); /* not all OS-es handle main() return value */
504     return ret;
505 }
506
507 static void assert_avoptions(AVDictionary *m)
508 {
509     AVDictionaryEntry *t;
510     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
511         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
512         ffmpeg_exit(1);
513     }
514 }
515
516 static void assert_codec_experimental(AVCodecContext *c, int encoder)
517 {
518     const char *codec_string = encoder ? "encoder" : "decoder";
519     AVCodec *codec;
520     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
521         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
522         av_log(NULL, AV_LOG_ERROR, "%s '%s' is experimental and might produce bad "
523                 "results.\nAdd '-strict experimental' if you want to use it.\n",
524                 codec_string, c->codec->name);
525         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
526         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
527             av_log(NULL, AV_LOG_ERROR, "Or use the non experimental %s '%s'.\n",
528                    codec_string, codec->name);
529         ffmpeg_exit(1);
530     }
531 }
532
533 /* similar to ff_dynarray_add() and av_fast_realloc() */
534 static void *grow_array(void *array, int elem_size, int *size, int new_size)
535 {
536     if (new_size >= INT_MAX / elem_size) {
537         fprintf(stderr, "Array too big.\n");
538         ffmpeg_exit(1);
539     }
540     if (*size < new_size) {
541         uint8_t *tmp = av_realloc(array, new_size*elem_size);
542         if (!tmp) {
543             fprintf(stderr, "Could not alloc buffer.\n");
544             ffmpeg_exit(1);
545         }
546         memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
547         *size = new_size;
548         return tmp;
549     }
550     return array;
551 }
552
553 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
554 {
555     if(codec && codec->sample_fmts){
556         const enum AVSampleFormat *p= codec->sample_fmts;
557         for(; *p!=-1; p++){
558             if(*p == st->codec->sample_fmt)
559                 break;
560         }
561         if (*p == -1) {
562             av_log(NULL, AV_LOG_WARNING,
563                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
564                    av_get_sample_fmt_name(st->codec->sample_fmt),
565                    codec->name,
566                    av_get_sample_fmt_name(codec->sample_fmts[0]));
567             st->codec->sample_fmt = codec->sample_fmts[0];
568         }
569     }
570 }
571
572 /**
573  * Update the requested input sample format based on the output sample format.
574  * This is currently only used to request float output from decoders which
575  * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
576  * Ideally this will be removed in the future when decoders do not do format
577  * conversion and only output in their native format.
578  */
579 static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
580                               AVCodecContext *enc)
581 {
582     /* if sample formats match or a decoder sample format has already been
583        requested, just return */
584     if (enc->sample_fmt == dec->sample_fmt ||
585         dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
586         return;
587
588     /* if decoder supports more than one output format */
589     if (dec_codec && dec_codec->sample_fmts &&
590         dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
591         dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
592         const enum AVSampleFormat *p;
593         int min_dec = -1, min_inc = -1;
594
595         /* find a matching sample format in the encoder */
596         for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
597             if (*p == enc->sample_fmt) {
598                 dec->request_sample_fmt = *p;
599                 return;
600             } else if (*p > enc->sample_fmt) {
601                 min_inc = FFMIN(min_inc, *p - enc->sample_fmt);
602             } else
603                 min_dec = FFMIN(min_dec, enc->sample_fmt - *p);
604         }
605
606         /* if none match, provide the one that matches quality closest */
607         dec->request_sample_fmt = min_inc > 0 ? enc->sample_fmt + min_inc :
608                                   enc->sample_fmt - min_dec;
609     }
610 }
611
612 static void choose_sample_rate(AVStream *st, AVCodec *codec)
613 {
614     if(codec && codec->supported_samplerates){
615         const int *p= codec->supported_samplerates;
616         int best=0;
617         int best_dist=INT_MAX;
618         for(; *p; p++){
619             int dist= abs(st->codec->sample_rate - *p);
620             if(dist < best_dist){
621                 best_dist= dist;
622                 best= *p;
623             }
624         }
625         if(best_dist){
626             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
627         }
628         st->codec->sample_rate= best;
629     }
630 }
631
632 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
633 {
634     if(codec && codec->pix_fmts){
635         const enum PixelFormat *p= codec->pix_fmts;
636         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
637             if(st->codec->codec_id==CODEC_ID_MJPEG){
638                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
639             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
640                 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};
641             }
642         }
643         for(; *p!=-1; p++){
644             if(*p == st->codec->pix_fmt)
645                 break;
646         }
647         if (*p == -1) {
648             if(st->codec->pix_fmt != PIX_FMT_NONE)
649                 av_log(NULL, AV_LOG_WARNING,
650                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
651                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
652                         codec->name,
653                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
654             st->codec->pix_fmt = codec->pix_fmts[0];
655         }
656     }
657 }
658
659 static OutputStream *new_output_stream(AVFormatContext *oc, int file_idx, AVCodec *codec)
660 {
661     OutputStream *ost;
662     AVStream *st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
663     int idx      = oc->nb_streams - 1;
664
665     if (!st) {
666         av_log(NULL, AV_LOG_ERROR, "Could not alloc stream.\n");
667         ffmpeg_exit(1);
668     }
669
670     output_streams_for_file[file_idx] =
671         grow_array(output_streams_for_file[file_idx],
672                    sizeof(*output_streams_for_file[file_idx]),
673                    &nb_output_streams_for_file[file_idx],
674                    oc->nb_streams);
675     ost = output_streams_for_file[file_idx][idx] =
676         av_mallocz(sizeof(OutputStream));
677     if (!ost) {
678         fprintf(stderr, "Could not alloc output stream\n");
679         ffmpeg_exit(1);
680     }
681     ost->file_index = file_idx;
682     ost->index = idx;
683     ost->st    = st;
684     ost->enc   = codec;
685     if (codec)
686         ost->opts  = filter_codec_opts(codec_opts, codec->id, oc, st);
687
688     avcodec_get_context_defaults3(st->codec, codec);
689
690     ost->sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
691     return ost;
692 }
693
694 static int read_avserver_streams(AVFormatContext *s, const char *filename)
695 {
696     int i, err;
697     AVFormatContext *ic = NULL;
698
699     err = avformat_open_input(&ic, filename, NULL, NULL);
700     if (err < 0)
701         return err;
702     /* copy stream format */
703     for(i=0;i<ic->nb_streams;i++) {
704         AVStream *st;
705         OutputStream *ost;
706         AVCodec *codec;
707
708         codec = avcodec_find_encoder(ic->streams[i]->codec->codec_id);
709         ost   = new_output_stream(s, nb_output_files, codec);
710         st    = ost->st;
711
712         // FIXME: a more elegant solution is needed
713         memcpy(st, ic->streams[i], sizeof(AVStream));
714         st->info = NULL;
715         avcodec_copy_context(st->codec, ic->streams[i]->codec);
716
717         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
718             if (audio_stream_copy) {
719                 st->stream_copy = 1;
720             } else
721                 choose_sample_fmt(st, codec);
722         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
723             if (video_stream_copy) {
724                 st->stream_copy = 1;
725             } else
726                 choose_pixel_fmt(st, codec);
727         }
728     }
729
730     av_close_input_file(ic);
731     return 0;
732 }
733
734 static double
735 get_sync_ipts(const OutputStream *ost)
736 {
737     const InputStream *ist = ost->sync_ist;
738     return (double)(ist->pts - start_time)/AV_TIME_BASE;
739 }
740
741 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
742     int ret;
743
744     while(bsfc){
745         AVPacket new_pkt= *pkt;
746         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
747                                           &new_pkt.data, &new_pkt.size,
748                                           pkt->data, pkt->size,
749                                           pkt->flags & AV_PKT_FLAG_KEY);
750         if(a>0){
751             av_free_packet(pkt);
752             new_pkt.destruct= av_destruct_packet;
753         } else if(a<0){
754             fprintf(stderr, "%s failed for stream %d, codec %s",
755                     bsfc->filter->name, pkt->stream_index,
756                     avctx->codec ? avctx->codec->name : "copy");
757             print_error("", a);
758             if (exit_on_error)
759                 ffmpeg_exit(1);
760         }
761         *pkt= new_pkt;
762
763         bsfc= bsfc->next;
764     }
765
766     ret= av_interleaved_write_frame(s, pkt);
767     if(ret < 0){
768         print_error("av_interleaved_write_frame()", ret);
769         ffmpeg_exit(1);
770     }
771 }
772
773 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
774
775 static void do_audio_out(AVFormatContext *s,
776                          OutputStream *ost,
777                          InputStream *ist,
778                          unsigned char *buf, int size)
779 {
780     uint8_t *buftmp;
781     int64_t audio_out_size, audio_buf_size;
782     int64_t allocated_for_size= size;
783
784     int size_out, frame_bytes, ret, resample_changed;
785     AVCodecContext *enc= ost->st->codec;
786     AVCodecContext *dec= ist->st->codec;
787     int osize = av_get_bytes_per_sample(enc->sample_fmt);
788     int isize = av_get_bytes_per_sample(dec->sample_fmt);
789     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
790
791 need_realloc:
792     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
793     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
794     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
795     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
796     audio_buf_size*= osize*enc->channels;
797
798     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
799     if(coded_bps > 8*osize)
800         audio_out_size= audio_out_size * coded_bps / (8*osize);
801     audio_out_size += FF_MIN_BUFFER_SIZE;
802
803     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
804         fprintf(stderr, "Buffer sizes too large\n");
805         ffmpeg_exit(1);
806     }
807
808     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
809     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
810     if (!audio_buf || !audio_out){
811         fprintf(stderr, "Out of memory in do_audio_out\n");
812         ffmpeg_exit(1);
813     }
814
815     if (enc->channels != dec->channels || enc->sample_rate != dec->sample_rate)
816         ost->audio_resample = 1;
817
818     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
819                        ost->resample_channels    != dec->channels   ||
820                        ost->resample_sample_rate != dec->sample_rate;
821
822     if ((ost->audio_resample && !ost->resample) || resample_changed) {
823         if (resample_changed) {
824             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",
825                    ist->file_index, ist->st->index,
826                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
827                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
828             ost->resample_sample_fmt  = dec->sample_fmt;
829             ost->resample_channels    = dec->channels;
830             ost->resample_sample_rate = dec->sample_rate;
831             if (ost->resample)
832                 audio_resample_close(ost->resample);
833         }
834         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
835         if (audio_sync_method <= 1 &&
836             ost->resample_sample_fmt  == enc->sample_fmt &&
837             ost->resample_channels    == enc->channels   &&
838             ost->resample_sample_rate == enc->sample_rate) {
839             ost->resample = NULL;
840             ost->audio_resample = 0;
841         } else if (ost->audio_resample) {
842             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
843                 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
844             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
845                                                    enc->sample_rate, dec->sample_rate,
846                                                    enc->sample_fmt,  dec->sample_fmt,
847                                                    16, 10, 0, 0.8);
848             if (!ost->resample) {
849                 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
850                         dec->channels, dec->sample_rate,
851                         enc->channels, enc->sample_rate);
852                 ffmpeg_exit(1);
853             }
854         }
855     }
856
857 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
858     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
859         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
860         if (ost->reformat_ctx)
861             av_audio_convert_free(ost->reformat_ctx);
862         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
863                                                    dec->sample_fmt, 1, NULL, 0);
864         if (!ost->reformat_ctx) {
865             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
866                 av_get_sample_fmt_name(dec->sample_fmt),
867                 av_get_sample_fmt_name(enc->sample_fmt));
868             ffmpeg_exit(1);
869         }
870         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
871     }
872
873     if(audio_sync_method){
874         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
875                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
876         double idelta= delta*dec->sample_rate / enc->sample_rate;
877         int byte_delta= ((int)idelta)*2*dec->channels;
878
879         //FIXME resample delay
880         if(fabs(delta) > 50){
881             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
882                 if(byte_delta < 0){
883                     byte_delta= FFMAX(byte_delta, -size);
884                     size += byte_delta;
885                     buf  -= byte_delta;
886                     if(verbose > 2)
887                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
888                     if(!size)
889                         return;
890                     ist->is_start=0;
891                 }else{
892                     static uint8_t *input_tmp= NULL;
893                     input_tmp= av_realloc(input_tmp, byte_delta + size);
894
895                     if(byte_delta > allocated_for_size - size){
896                         allocated_for_size= byte_delta + (int64_t)size;
897                         goto need_realloc;
898                     }
899                     ist->is_start=0;
900
901                     memset(input_tmp, 0, byte_delta);
902                     memcpy(input_tmp + byte_delta, buf, size);
903                     buf= input_tmp;
904                     size += byte_delta;
905                     if(verbose > 2)
906                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
907                 }
908             }else if(audio_sync_method>1){
909                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
910                 av_assert0(ost->audio_resample);
911                 if(verbose > 2)
912                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
913 //                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));
914                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
915             }
916         }
917     }else
918         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
919                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
920
921     if (ost->audio_resample) {
922         buftmp = audio_buf;
923         size_out = audio_resample(ost->resample,
924                                   (short *)buftmp, (short *)buf,
925                                   size / (dec->channels * isize));
926         size_out = size_out * enc->channels * osize;
927     } else {
928         buftmp = buf;
929         size_out = size;
930     }
931
932     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
933         const void *ibuf[6]= {buftmp};
934         void *obuf[6]= {audio_buf};
935         int istride[6]= {isize};
936         int ostride[6]= {osize};
937         int len= size_out/istride[0];
938         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
939             printf("av_audio_convert() failed\n");
940             if (exit_on_error)
941                 ffmpeg_exit(1);
942             return;
943         }
944         buftmp = audio_buf;
945         size_out = len*osize;
946     }
947
948     /* now encode as many frames as possible */
949     if (enc->frame_size > 1) {
950         /* output resampled raw samples */
951         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
952             fprintf(stderr, "av_fifo_realloc2() failed\n");
953             ffmpeg_exit(1);
954         }
955         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
956
957         frame_bytes = enc->frame_size * osize * enc->channels;
958
959         while (av_fifo_size(ost->fifo) >= frame_bytes) {
960             AVPacket pkt;
961             av_init_packet(&pkt);
962
963             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
964
965             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
966
967             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
968                                        (short *)audio_buf);
969             if (ret < 0) {
970                 fprintf(stderr, "Audio encoding failed\n");
971                 ffmpeg_exit(1);
972             }
973             audio_size += ret;
974             pkt.stream_index= ost->index;
975             pkt.data= audio_out;
976             pkt.size= ret;
977             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
978                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
979             pkt.flags |= AV_PKT_FLAG_KEY;
980             write_frame(s, &pkt, enc, ost->bitstream_filters);
981
982             ost->sync_opts += enc->frame_size;
983         }
984     } else {
985         AVPacket pkt;
986         av_init_packet(&pkt);
987
988         ost->sync_opts += size_out / (osize * enc->channels);
989
990         /* output a pcm frame */
991         /* determine the size of the coded buffer */
992         size_out /= osize;
993         if (coded_bps)
994             size_out = size_out*coded_bps/8;
995
996         if(size_out > audio_out_size){
997             fprintf(stderr, "Internal error, buffer size too small\n");
998             ffmpeg_exit(1);
999         }
1000
1001         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1002         ret = avcodec_encode_audio(enc, audio_out, size_out,
1003                                    (short *)buftmp);
1004         if (ret < 0) {
1005             fprintf(stderr, "Audio encoding failed\n");
1006             ffmpeg_exit(1);
1007         }
1008         audio_size += ret;
1009         pkt.stream_index= ost->index;
1010         pkt.data= audio_out;
1011         pkt.size= ret;
1012         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1013             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1014         pkt.flags |= AV_PKT_FLAG_KEY;
1015         write_frame(s, &pkt, enc, ost->bitstream_filters);
1016     }
1017 }
1018
1019 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1020 {
1021     AVCodecContext *dec;
1022     AVPicture *picture2;
1023     AVPicture picture_tmp;
1024     uint8_t *buf = 0;
1025
1026     dec = ist->st->codec;
1027
1028     /* deinterlace : must be done before any resize */
1029     if (do_deinterlace) {
1030         int size;
1031
1032         /* create temporary picture */
1033         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1034         buf = av_malloc(size);
1035         if (!buf)
1036             return;
1037
1038         picture2 = &picture_tmp;
1039         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1040
1041         if(avpicture_deinterlace(picture2, picture,
1042                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1043             /* if error, do not deinterlace */
1044             fprintf(stderr, "Deinterlacing failed\n");
1045             av_free(buf);
1046             buf = NULL;
1047             picture2 = picture;
1048         }
1049     } else {
1050         picture2 = picture;
1051     }
1052
1053     if (picture != picture2)
1054         *picture = *picture2;
1055     *bufp = buf;
1056 }
1057
1058 /* we begin to correct av delay at this threshold */
1059 #define AV_DELAY_MAX 0.100
1060
1061 static void do_subtitle_out(AVFormatContext *s,
1062                             OutputStream *ost,
1063                             InputStream *ist,
1064                             AVSubtitle *sub,
1065                             int64_t pts)
1066 {
1067     static uint8_t *subtitle_out = NULL;
1068     int subtitle_out_max_size = 1024 * 1024;
1069     int subtitle_out_size, nb, i;
1070     AVCodecContext *enc;
1071     AVPacket pkt;
1072
1073     if (pts == AV_NOPTS_VALUE) {
1074         fprintf(stderr, "Subtitle packets must have a pts\n");
1075         if (exit_on_error)
1076             ffmpeg_exit(1);
1077         return;
1078     }
1079
1080     enc = ost->st->codec;
1081
1082     if (!subtitle_out) {
1083         subtitle_out = av_malloc(subtitle_out_max_size);
1084     }
1085
1086     /* Note: DVB subtitle need one packet to draw them and one other
1087        packet to clear them */
1088     /* XXX: signal it in the codec context ? */
1089     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1090         nb = 2;
1091     else
1092         nb = 1;
1093
1094     for(i = 0; i < nb; i++) {
1095         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1096         // start_display_time is required to be 0
1097         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1098         sub->end_display_time -= sub->start_display_time;
1099         sub->start_display_time = 0;
1100         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1101                                                     subtitle_out_max_size, sub);
1102         if (subtitle_out_size < 0) {
1103             fprintf(stderr, "Subtitle encoding failed\n");
1104             ffmpeg_exit(1);
1105         }
1106
1107         av_init_packet(&pkt);
1108         pkt.stream_index = ost->index;
1109         pkt.data = subtitle_out;
1110         pkt.size = subtitle_out_size;
1111         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1112         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1113             /* XXX: the pts correction is handled here. Maybe handling
1114                it in the codec would be better */
1115             if (i == 0)
1116                 pkt.pts += 90 * sub->start_display_time;
1117             else
1118                 pkt.pts += 90 * sub->end_display_time;
1119         }
1120         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1121     }
1122 }
1123
1124 static int bit_buffer_size= 1024*256;
1125 static uint8_t *bit_buffer= NULL;
1126
1127 static void do_video_out(AVFormatContext *s,
1128                          OutputStream *ost,
1129                          InputStream *ist,
1130                          AVFrame *in_picture,
1131                          int *frame_size, float quality)
1132 {
1133     int nb_frames, i, ret, resample_changed;
1134     AVFrame *final_picture, *formatted_picture;
1135     AVCodecContext *enc, *dec;
1136     double sync_ipts;
1137
1138     enc = ost->st->codec;
1139     dec = ist->st->codec;
1140
1141     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1142
1143     /* by default, we output a single frame */
1144     nb_frames = 1;
1145
1146     *frame_size = 0;
1147
1148     if(video_sync_method){
1149         double vdelta = sync_ipts - ost->sync_opts;
1150         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1151         if (vdelta < -1.1)
1152             nb_frames = 0;
1153         else if (video_sync_method == 2 || (video_sync_method<0 && (s->oformat->flags & AVFMT_VARIABLE_FPS))){
1154             if(vdelta<=-0.6){
1155                 nb_frames=0;
1156             }else if(vdelta>0.6)
1157                 ost->sync_opts= lrintf(sync_ipts);
1158         }else if (vdelta > 1.1)
1159             nb_frames = lrintf(vdelta);
1160 //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);
1161         if (nb_frames == 0){
1162             ++nb_frames_drop;
1163             if (verbose>2)
1164                 fprintf(stderr, "*** drop!\n");
1165         }else if (nb_frames > 1) {
1166             nb_frames_dup += nb_frames - 1;
1167             if (verbose>2)
1168                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1169         }
1170     }else
1171         ost->sync_opts= lrintf(sync_ipts);
1172
1173     nb_frames= FFMIN(nb_frames, max_frames[AVMEDIA_TYPE_VIDEO] - ost->frame_number);
1174     if (nb_frames <= 0)
1175         return;
1176
1177     formatted_picture = in_picture;
1178     final_picture = formatted_picture;
1179
1180     resample_changed = ost->resample_width   != dec->width  ||
1181                        ost->resample_height  != dec->height ||
1182                        ost->resample_pix_fmt != dec->pix_fmt;
1183
1184     if (resample_changed) {
1185         av_log(NULL, AV_LOG_INFO,
1186                "Input stream #%d.%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1187                ist->file_index, ist->st->index,
1188                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1189                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1190         if(!ost->video_resample)
1191             ffmpeg_exit(1);
1192     }
1193
1194 #if !CONFIG_AVFILTER
1195     if (ost->video_resample) {
1196         final_picture = &ost->pict_tmp;
1197         if (resample_changed) {
1198             /* initialize a new scaler context */
1199             sws_freeContext(ost->img_resample_ctx);
1200             ost->img_resample_ctx = sws_getContext(
1201                 ist->st->codec->width,
1202                 ist->st->codec->height,
1203                 ist->st->codec->pix_fmt,
1204                 ost->st->codec->width,
1205                 ost->st->codec->height,
1206                 ost->st->codec->pix_fmt,
1207                 ost->sws_flags, NULL, NULL, NULL);
1208             if (ost->img_resample_ctx == NULL) {
1209                 fprintf(stderr, "Cannot get resampling context\n");
1210                 ffmpeg_exit(1);
1211             }
1212         }
1213         sws_scale(ost->img_resample_ctx, formatted_picture->data, formatted_picture->linesize,
1214               0, ost->resample_height, final_picture->data, final_picture->linesize);
1215     }
1216 #endif
1217
1218     /* duplicates frame if needed */
1219     for(i=0;i<nb_frames;i++) {
1220         AVPacket pkt;
1221         av_init_packet(&pkt);
1222         pkt.stream_index= ost->index;
1223
1224         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1225             /* raw pictures are written as AVPicture structure to
1226                avoid any copies. We support temorarily the older
1227                method. */
1228             AVFrame* old_frame = enc->coded_frame;
1229             enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
1230             pkt.data= (uint8_t *)final_picture;
1231             pkt.size=  sizeof(AVPicture);
1232             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1233             pkt.flags |= AV_PKT_FLAG_KEY;
1234
1235             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1236             enc->coded_frame = old_frame;
1237         } else {
1238             AVFrame big_picture;
1239
1240             big_picture= *final_picture;
1241             /* better than nothing: use input picture interlaced
1242                settings */
1243             big_picture.interlaced_frame = in_picture->interlaced_frame;
1244             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1245                 if(top_field_first == -1)
1246                     big_picture.top_field_first = in_picture->top_field_first;
1247                 else
1248                     big_picture.top_field_first = top_field_first;
1249             }
1250
1251             /* handles sameq here. This is not correct because it may
1252                not be a global option */
1253             big_picture.quality = quality;
1254             if(!me_threshold)
1255                 big_picture.pict_type = 0;
1256 //            big_picture.pts = AV_NOPTS_VALUE;
1257             big_picture.pts= ost->sync_opts;
1258 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1259 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1260             if (ost->forced_kf_index < ost->forced_kf_count &&
1261                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1262                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1263                 ost->forced_kf_index++;
1264             }
1265             ret = avcodec_encode_video(enc,
1266                                        bit_buffer, bit_buffer_size,
1267                                        &big_picture);
1268             if (ret < 0) {
1269                 fprintf(stderr, "Video encoding failed\n");
1270                 ffmpeg_exit(1);
1271             }
1272
1273             if(ret>0){
1274                 pkt.data= bit_buffer;
1275                 pkt.size= ret;
1276                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1277                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1278 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1279    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1280    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1281
1282                 if(enc->coded_frame->key_frame)
1283                     pkt.flags |= AV_PKT_FLAG_KEY;
1284                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1285                 *frame_size = ret;
1286                 video_size += ret;
1287                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1288                 //        enc->frame_number-1, ret, enc->pict_type);
1289                 /* if two pass, output log */
1290                 if (ost->logfile && enc->stats_out) {
1291                     fprintf(ost->logfile, "%s", enc->stats_out);
1292                 }
1293             }
1294         }
1295         ost->sync_opts++;
1296         ost->frame_number++;
1297     }
1298 }
1299
1300 static double psnr(double d){
1301     return -10.0*log(d)/log(10.0);
1302 }
1303
1304 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1305                            int frame_size)
1306 {
1307     AVCodecContext *enc;
1308     int frame_number;
1309     double ti1, bitrate, avg_bitrate;
1310
1311     /* this is executed just the first time do_video_stats is called */
1312     if (!vstats_file) {
1313         vstats_file = fopen(vstats_filename, "w");
1314         if (!vstats_file) {
1315             perror("fopen");
1316             ffmpeg_exit(1);
1317         }
1318     }
1319
1320     enc = ost->st->codec;
1321     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1322         frame_number = ost->frame_number;
1323         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1324         if (enc->flags&CODEC_FLAG_PSNR)
1325             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1326
1327         fprintf(vstats_file,"f_size= %6d ", frame_size);
1328         /* compute pts value */
1329         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1330         if (ti1 < 0.01)
1331             ti1 = 0.01;
1332
1333         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1334         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1335         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1336             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1337         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1338     }
1339 }
1340
1341 static void print_report(AVFormatContext **output_files,
1342                          OutputStream **ost_table, int nb_ostreams,
1343                          int is_last_report)
1344 {
1345     char buf[1024];
1346     OutputStream *ost;
1347     AVFormatContext *oc;
1348     int64_t total_size;
1349     AVCodecContext *enc;
1350     int frame_number, vid, i;
1351     double bitrate, ti1, pts;
1352     static int64_t last_time = -1;
1353     static int qp_histogram[52];
1354
1355     if (!is_last_report) {
1356         int64_t cur_time;
1357         /* display the report every 0.5 seconds */
1358         cur_time = av_gettime();
1359         if (last_time == -1) {
1360             last_time = cur_time;
1361             return;
1362         }
1363         if ((cur_time - last_time) < 500000)
1364             return;
1365         last_time = cur_time;
1366     }
1367
1368
1369     oc = output_files[0];
1370
1371     total_size = avio_size(oc->pb);
1372     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1373         total_size= avio_tell(oc->pb);
1374
1375     buf[0] = '\0';
1376     ti1 = 1e10;
1377     vid = 0;
1378     for(i=0;i<nb_ostreams;i++) {
1379         float q = -1;
1380         ost = ost_table[i];
1381         enc = ost->st->codec;
1382         if (!ost->st->stream_copy && enc->coded_frame)
1383             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1384         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1385             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1386         }
1387         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1388             float t = (av_gettime()-timer_start) / 1000000.0;
1389
1390             frame_number = ost->frame_number;
1391             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1392                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1393             if(is_last_report)
1394                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1395             if(qp_hist){
1396                 int j;
1397                 int qp = lrintf(q);
1398                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1399                     qp_histogram[qp]++;
1400                 for(j=0; j<32; j++)
1401                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1402             }
1403             if (enc->flags&CODEC_FLAG_PSNR){
1404                 int j;
1405                 double error, error_sum=0;
1406                 double scale, scale_sum=0;
1407                 char type[3]= {'Y','U','V'};
1408                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1409                 for(j=0; j<3; j++){
1410                     if(is_last_report){
1411                         error= enc->error[j];
1412                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1413                     }else{
1414                         error= enc->coded_frame->error[j];
1415                         scale= enc->width*enc->height*255.0*255.0;
1416                     }
1417                     if(j) scale/=4;
1418                     error_sum += error;
1419                     scale_sum += scale;
1420                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1421                 }
1422                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1423             }
1424             vid = 1;
1425         }
1426         /* compute min output value */
1427         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1428         if ((pts < ti1) && (pts > 0))
1429             ti1 = pts;
1430     }
1431     if (ti1 < 0.01)
1432         ti1 = 0.01;
1433
1434     if (verbose > 0 || is_last_report) {
1435         bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1436
1437         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1438             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1439             (double)total_size / 1024, ti1, bitrate);
1440
1441         if (nb_frames_dup || nb_frames_drop)
1442           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1443                   nb_frames_dup, nb_frames_drop);
1444
1445         if (verbose >= 0)
1446             fprintf(stderr, "%s    \r", buf);
1447
1448         fflush(stderr);
1449     }
1450
1451     if (is_last_report && verbose >= 0){
1452         int64_t raw= audio_size + video_size + extra_size;
1453         fprintf(stderr, "\n");
1454         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1455                 video_size/1024.0,
1456                 audio_size/1024.0,
1457                 extra_size/1024.0,
1458                 100.0*(total_size - raw)/raw
1459         );
1460     }
1461 }
1462
1463 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1464 {
1465     int fill_char = 0x00;
1466     if (sample_fmt == AV_SAMPLE_FMT_U8)
1467         fill_char = 0x80;
1468     memset(buf, fill_char, size);
1469 }
1470
1471 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1472 static int output_packet(InputStream *ist, int ist_index,
1473                          OutputStream **ost_table, int nb_ostreams,
1474                          const AVPacket *pkt)
1475 {
1476     AVFormatContext *os;
1477     OutputStream *ost;
1478     int ret, i;
1479     int got_output;
1480     AVFrame picture;
1481     void *buffer_to_free = NULL;
1482     static unsigned int samples_size= 0;
1483     AVSubtitle subtitle, *subtitle_to_free;
1484     int64_t pkt_pts = AV_NOPTS_VALUE;
1485 #if CONFIG_AVFILTER
1486     int frame_available;
1487 #endif
1488     float quality;
1489
1490     AVPacket avpkt;
1491     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1492
1493     if(ist->next_pts == AV_NOPTS_VALUE)
1494         ist->next_pts= ist->pts;
1495
1496     if (pkt == NULL) {
1497         /* EOF handling */
1498         av_init_packet(&avpkt);
1499         avpkt.data = NULL;
1500         avpkt.size = 0;
1501         goto handle_eof;
1502     } else {
1503         avpkt = *pkt;
1504     }
1505
1506     if(pkt->dts != AV_NOPTS_VALUE)
1507         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1508     if(pkt->pts != AV_NOPTS_VALUE)
1509         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1510
1511     //while we have more to decode or while the decoder did output something on EOF
1512     while (avpkt.size > 0 || (!pkt && got_output)) {
1513         uint8_t *data_buf, *decoded_data_buf;
1514         int data_size, decoded_data_size;
1515     handle_eof:
1516         ist->pts= ist->next_pts;
1517
1518         if(avpkt.size && avpkt.size != pkt->size &&
1519            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1520             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1521             ist->showed_multi_packet_warning=1;
1522         }
1523
1524         /* decode the packet if needed */
1525         decoded_data_buf = NULL; /* fail safe */
1526         decoded_data_size= 0;
1527         data_buf  = avpkt.data;
1528         data_size = avpkt.size;
1529         subtitle_to_free = NULL;
1530         if (ist->decoding_needed) {
1531             switch(ist->st->codec->codec_type) {
1532             case AVMEDIA_TYPE_AUDIO:{
1533                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1534                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1535                     av_free(samples);
1536                     samples= av_malloc(samples_size);
1537                 }
1538                 decoded_data_size= samples_size;
1539                     /* XXX: could avoid copy if PCM 16 bits with same
1540                        endianness as CPU */
1541                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1542                                             &avpkt);
1543                 if (ret < 0)
1544                     return ret;
1545                 avpkt.data += ret;
1546                 avpkt.size -= ret;
1547                 data_size   = ret;
1548                 got_output  = decoded_data_size > 0;
1549                 /* Some bug in mpeg audio decoder gives */
1550                 /* decoded_data_size < 0, it seems they are overflows */
1551                 if (!got_output) {
1552                     /* no audio frame */
1553                     continue;
1554                 }
1555                 decoded_data_buf = (uint8_t *)samples;
1556                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1557                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1558                 break;}
1559             case AVMEDIA_TYPE_VIDEO:
1560                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1561                     /* XXX: allocate picture correctly */
1562                     avcodec_get_frame_defaults(&picture);
1563                     avpkt.pts = pkt_pts;
1564                     avpkt.dts = ist->pts;
1565                     pkt_pts = AV_NOPTS_VALUE;
1566
1567                     ret = avcodec_decode_video2(ist->st->codec,
1568                                                 &picture, &got_output, &avpkt);
1569                     quality = same_quality ? picture.quality : 0;
1570                     if (ret < 0)
1571                         return ret;
1572                     if (!got_output) {
1573                         /* no picture yet */
1574                         goto discard_packet;
1575                     }
1576                     ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, picture.pkt_pts, picture.pkt_dts);
1577                     if (ist->st->codec->time_base.num != 0) {
1578                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1579                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1580                                           ist->st->codec->time_base.num * ticks) /
1581                             ist->st->codec->time_base.den;
1582                     }
1583                     avpkt.size = 0;
1584                     buffer_to_free = NULL;
1585                     pre_process_video_frame(ist, (AVPicture *)&picture, &buffer_to_free);
1586                     break;
1587             case AVMEDIA_TYPE_SUBTITLE:
1588                 ret = avcodec_decode_subtitle2(ist->st->codec,
1589                                                &subtitle, &got_output, &avpkt);
1590                 if (ret < 0)
1591                     return ret;
1592                 if (!got_output) {
1593                     goto discard_packet;
1594                 }
1595                 subtitle_to_free = &subtitle;
1596                 avpkt.size = 0;
1597                 break;
1598             default:
1599                 return -1;
1600             }
1601         } else {
1602             switch(ist->st->codec->codec_type) {
1603             case AVMEDIA_TYPE_AUDIO:
1604                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1605                     ist->st->codec->sample_rate;
1606                 break;
1607             case AVMEDIA_TYPE_VIDEO:
1608                 if (ist->st->codec->time_base.num != 0) {
1609                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1610                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1611                                       ist->st->codec->time_base.num * ticks) /
1612                         ist->st->codec->time_base.den;
1613                 }
1614                 break;
1615             }
1616             ret = avpkt.size;
1617             avpkt.size = 0;
1618         }
1619
1620 #if CONFIG_AVFILTER
1621         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1622             for (i = 0; i < nb_ostreams; i++) {
1623                 ost = ost_table[i];
1624                 if (ost->input_video_filter && ost->source_index == ist_index) {
1625                     AVRational sar;
1626                     if (ist->st->sample_aspect_ratio.num)
1627                         sar = ist->st->sample_aspect_ratio;
1628                     else
1629                         sar = ist->st->codec->sample_aspect_ratio;
1630                     // add it to be filtered
1631                     av_vsrc_buffer_add_frame(ost->input_video_filter, &picture,
1632                                              ist->pts,
1633                                              sar);
1634                 }
1635             }
1636         }
1637 #endif
1638
1639         // preprocess audio (volume)
1640         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1641             if (audio_volume != 256) {
1642                 short *volp;
1643                 volp = samples;
1644                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1645                     int v = ((*volp) * audio_volume + 128) >> 8;
1646                     if (v < -32768) v = -32768;
1647                     if (v >  32767) v = 32767;
1648                     *volp++ = v;
1649                 }
1650             }
1651         }
1652
1653         /* frame rate emulation */
1654         if (rate_emu) {
1655             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1656             int64_t now = av_gettime() - ist->start;
1657             if (pts > now)
1658                 usleep(pts - now);
1659         }
1660         /* if output time reached then transcode raw format,
1661            encode packets and output them */
1662         if (start_time == 0 || ist->pts >= start_time)
1663             for(i=0;i<nb_ostreams;i++) {
1664                 int frame_size;
1665
1666                 ost = ost_table[i];
1667                 if (ost->source_index == ist_index) {
1668 #if CONFIG_AVFILTER
1669                 frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1670                     !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1671                 while (frame_available) {
1672                     AVRational ist_pts_tb;
1673                     if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter)
1674                         get_filtered_video_frame(ost->output_video_filter, &picture, &ost->picref, &ist_pts_tb);
1675                     if (ost->picref)
1676                         ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1677 #endif
1678                     os = output_files[ost->file_index];
1679
1680                     /* set the input output pts pairs */
1681                     //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
1682
1683                     if (ost->encoding_needed) {
1684                         av_assert0(ist->decoding_needed);
1685                         switch(ost->st->codec->codec_type) {
1686                         case AVMEDIA_TYPE_AUDIO:
1687                             do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1688                             break;
1689                         case AVMEDIA_TYPE_VIDEO:
1690 #if CONFIG_AVFILTER
1691                             if (ost->picref->video && !ost->frame_aspect_ratio)
1692                                 ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
1693 #endif
1694                             do_video_out(os, ost, ist, &picture, &frame_size,
1695                                          same_quality ? quality : ost->st->codec->global_quality);
1696                             if (vstats_filename && frame_size)
1697                                 do_video_stats(os, ost, frame_size);
1698                             break;
1699                         case AVMEDIA_TYPE_SUBTITLE:
1700                             do_subtitle_out(os, ost, ist, &subtitle,
1701                                             pkt->pts);
1702                             break;
1703                         default:
1704                             abort();
1705                         }
1706                     } else {
1707                         AVFrame avframe; //FIXME/XXX remove this
1708                         AVPacket opkt;
1709                         int64_t ost_tb_start_time= av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1710
1711                         av_init_packet(&opkt);
1712
1713                         if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1714 #if !CONFIG_AVFILTER
1715                             continue;
1716 #else
1717                             goto cont;
1718 #endif
1719
1720                         /* no reencoding needed : output the packet directly */
1721                         /* force the input stream PTS */
1722
1723                         avcodec_get_frame_defaults(&avframe);
1724                         ost->st->codec->coded_frame= &avframe;
1725                         avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1726
1727                         if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1728                             audio_size += data_size;
1729                         else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1730                             video_size += data_size;
1731                             ost->sync_opts++;
1732                         }
1733
1734                         opkt.stream_index= ost->index;
1735                         if(pkt->pts != AV_NOPTS_VALUE)
1736                             opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1737                         else
1738                             opkt.pts= AV_NOPTS_VALUE;
1739
1740                         if (pkt->dts == AV_NOPTS_VALUE)
1741                             opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1742                         else
1743                             opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1744                         opkt.dts -= ost_tb_start_time;
1745
1746                         opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1747                         opkt.flags= pkt->flags;
1748
1749                         //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1750                         if(   ost->st->codec->codec_id != CODEC_ID_H264
1751                            && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1752                            && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1753                            ) {
1754                             if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1755                                 opkt.destruct= av_destruct_packet;
1756                         } else {
1757                             opkt.data = data_buf;
1758                             opkt.size = data_size;
1759                         }
1760
1761                         write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1762                         ost->st->codec->frame_number++;
1763                         ost->frame_number++;
1764                         av_free_packet(&opkt);
1765                     }
1766 #if CONFIG_AVFILTER
1767                     cont:
1768                     frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1769                                        ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1770                     if (ost->picref)
1771                         avfilter_unref_buffer(ost->picref);
1772                 }
1773 #endif
1774                 }
1775             }
1776
1777         av_free(buffer_to_free);
1778         /* XXX: allocate the subtitles in the codec ? */
1779         if (subtitle_to_free) {
1780             avsubtitle_free(subtitle_to_free);
1781             subtitle_to_free = NULL;
1782         }
1783     }
1784  discard_packet:
1785     if (pkt == NULL) {
1786         /* EOF handling */
1787
1788         for(i=0;i<nb_ostreams;i++) {
1789             ost = ost_table[i];
1790             if (ost->source_index == ist_index) {
1791                 AVCodecContext *enc= ost->st->codec;
1792                 os = output_files[ost->file_index];
1793
1794                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1795                     continue;
1796                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1797                     continue;
1798
1799                 if (ost->encoding_needed) {
1800                     for(;;) {
1801                         AVPacket pkt;
1802                         int fifo_bytes;
1803                         av_init_packet(&pkt);
1804                         pkt.stream_index= ost->index;
1805
1806                         switch(ost->st->codec->codec_type) {
1807                         case AVMEDIA_TYPE_AUDIO:
1808                             fifo_bytes = av_fifo_size(ost->fifo);
1809                             ret = 0;
1810                             /* encode any samples remaining in fifo */
1811                             if (fifo_bytes > 0) {
1812                                 int osize = av_get_bytes_per_sample(enc->sample_fmt);
1813                                 int fs_tmp = enc->frame_size;
1814
1815                                 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1816                                 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1817                                     enc->frame_size = fifo_bytes / (osize * enc->channels);
1818                                 } else { /* pad */
1819                                     int frame_bytes = enc->frame_size*osize*enc->channels;
1820                                     if (allocated_audio_buf_size < frame_bytes)
1821                                         ffmpeg_exit(1);
1822                                     generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1823                                 }
1824
1825                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1826                                 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1827                                                           ost->st->time_base.num, enc->sample_rate);
1828                                 enc->frame_size = fs_tmp;
1829                             }
1830                             if(ret <= 0) {
1831                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1832                             }
1833                             if (ret < 0) {
1834                                 fprintf(stderr, "Audio encoding failed\n");
1835                                 ffmpeg_exit(1);
1836                             }
1837                             audio_size += ret;
1838                             pkt.flags |= AV_PKT_FLAG_KEY;
1839                             break;
1840                         case AVMEDIA_TYPE_VIDEO:
1841                             ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1842                             if (ret < 0) {
1843                                 fprintf(stderr, "Video encoding failed\n");
1844                                 ffmpeg_exit(1);
1845                             }
1846                             video_size += ret;
1847                             if(enc->coded_frame && enc->coded_frame->key_frame)
1848                                 pkt.flags |= AV_PKT_FLAG_KEY;
1849                             if (ost->logfile && enc->stats_out) {
1850                                 fprintf(ost->logfile, "%s", enc->stats_out);
1851                             }
1852                             break;
1853                         default:
1854                             ret=-1;
1855                         }
1856
1857                         if(ret<=0)
1858                             break;
1859                         pkt.data= bit_buffer;
1860                         pkt.size= ret;
1861                         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1862                             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1863                         write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1864                     }
1865                 }
1866             }
1867         }
1868     }
1869
1870     return 0;
1871 }
1872
1873 static void print_sdp(AVFormatContext **avc, int n)
1874 {
1875     char sdp[2048];
1876
1877     av_sdp_create(avc, n, sdp, sizeof(sdp));
1878     printf("SDP:\n%s\n", sdp);
1879     fflush(stdout);
1880 }
1881
1882 static int copy_chapters(int infile, int outfile)
1883 {
1884     AVFormatContext *is = input_files[infile].ctx;
1885     AVFormatContext *os = output_files[outfile];
1886     int i;
1887
1888     for (i = 0; i < is->nb_chapters; i++) {
1889         AVChapter *in_ch = is->chapters[i], *out_ch;
1890         int64_t ts_off   = av_rescale_q(start_time - input_files[infile].ts_offset,
1891                                       AV_TIME_BASE_Q, in_ch->time_base);
1892         int64_t rt       = (recording_time == INT64_MAX) ? INT64_MAX :
1893                            av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
1894
1895
1896         if (in_ch->end < ts_off)
1897             continue;
1898         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
1899             break;
1900
1901         out_ch = av_mallocz(sizeof(AVChapter));
1902         if (!out_ch)
1903             return AVERROR(ENOMEM);
1904
1905         out_ch->id        = in_ch->id;
1906         out_ch->time_base = in_ch->time_base;
1907         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
1908         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
1909
1910         if (metadata_chapters_autocopy)
1911             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
1912
1913         os->nb_chapters++;
1914         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
1915         if (!os->chapters)
1916             return AVERROR(ENOMEM);
1917         os->chapters[os->nb_chapters - 1] = out_ch;
1918     }
1919     return 0;
1920 }
1921
1922 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1923                                     AVCodecContext *avctx)
1924 {
1925     char *p;
1926     int n = 1, i;
1927     int64_t t;
1928
1929     for (p = kf; *p; p++)
1930         if (*p == ',')
1931             n++;
1932     ost->forced_kf_count = n;
1933     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1934     if (!ost->forced_kf_pts) {
1935         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1936         ffmpeg_exit(1);
1937     }
1938     for (i = 0; i < n; i++) {
1939         p = i ? strchr(p, ',') + 1 : kf;
1940         t = parse_time_or_die("force_key_frames", p, 1);
1941         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1942     }
1943 }
1944
1945 /*
1946  * The following code is the main loop of the file converter
1947  */
1948 static int transcode(AVFormatContext **output_files,
1949                      int nb_output_files,
1950                      InputFile *input_files,
1951                      int nb_input_files,
1952                      StreamMap *stream_maps, int nb_stream_maps)
1953 {
1954     int ret = 0, i, j, k, n, nb_ostreams = 0;
1955     AVFormatContext *is, *os;
1956     AVCodecContext *codec, *icodec;
1957     OutputStream *ost, **ost_table = NULL;
1958     InputStream *ist;
1959     char error[1024];
1960     int want_sdp = 1;
1961     uint8_t no_packet[MAX_FILES]={0};
1962     int no_packet_count=0;
1963
1964     if (rate_emu)
1965         for (i = 0; i < nb_input_streams; i++)
1966             input_streams[i].start = av_gettime();
1967
1968     /* output stream init */
1969     nb_ostreams = 0;
1970     for(i=0;i<nb_output_files;i++) {
1971         os = output_files[i];
1972         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1973             av_dump_format(output_files[i], i, output_files[i]->filename, 1);
1974             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
1975             ret = AVERROR(EINVAL);
1976             goto fail;
1977         }
1978         nb_ostreams += os->nb_streams;
1979     }
1980     if (nb_stream_maps > 0 && nb_stream_maps != nb_ostreams) {
1981         fprintf(stderr, "Number of stream maps must match number of output streams\n");
1982         ret = AVERROR(EINVAL);
1983         goto fail;
1984     }
1985
1986     /* Sanity check the mapping args -- do the input files & streams exist? */
1987     for(i=0;i<nb_stream_maps;i++) {
1988         int fi = stream_maps[i].file_index;
1989         int si = stream_maps[i].stream_index;
1990
1991         if (fi < 0 || fi > nb_input_files - 1 ||
1992             si < 0 || si > input_files[fi].ctx->nb_streams - 1) {
1993             fprintf(stderr,"Could not find input stream #%d.%d\n", fi, si);
1994             ret = AVERROR(EINVAL);
1995             goto fail;
1996         }
1997         fi = stream_maps[i].sync_file_index;
1998         si = stream_maps[i].sync_stream_index;
1999         if (fi < 0 || fi > nb_input_files - 1 ||
2000             si < 0 || si > input_files[fi].ctx->nb_streams - 1) {
2001             fprintf(stderr,"Could not find sync stream #%d.%d\n", fi, si);
2002             ret = AVERROR(EINVAL);
2003             goto fail;
2004         }
2005     }
2006
2007     ost_table = av_mallocz(sizeof(OutputStream *) * nb_ostreams);
2008     if (!ost_table)
2009         goto fail;
2010     n = 0;
2011     for(k=0;k<nb_output_files;k++) {
2012         os = output_files[k];
2013         for(i=0;i<os->nb_streams;i++,n++) {
2014             int found;
2015             ost = ost_table[n] = output_streams_for_file[k][i];
2016             if (nb_stream_maps > 0) {
2017                 ost->source_index = input_files[stream_maps[n].file_index].ist_index +
2018                     stream_maps[n].stream_index;
2019
2020                 /* Sanity check that the stream types match */
2021                 if (input_streams[ost->source_index].st->codec->codec_type != ost->st->codec->codec_type) {
2022                     int i= ost->file_index;
2023                     av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2024                     fprintf(stderr, "Codec type mismatch for mapping #%d.%d -> #%d.%d\n",
2025                         stream_maps[n].file_index, stream_maps[n].stream_index,
2026                         ost->file_index, ost->index);
2027                     ffmpeg_exit(1);
2028                 }
2029
2030             } else {
2031                 int best_nb_frames=-1;
2032                 /* get corresponding input stream index : we select the first one with the right type */
2033                 found = 0;
2034                 for (j = 0; j < nb_input_streams; j++) {
2035                     int skip=0;
2036                     ist = &input_streams[j];
2037                     if(opt_programid){
2038                         int pi,si;
2039                         AVFormatContext *f = input_files[ist->file_index].ctx;
2040                         skip=1;
2041                         for(pi=0; pi<f->nb_programs; pi++){
2042                             AVProgram *p= f->programs[pi];
2043                             if(p->id == opt_programid)
2044                                 for(si=0; si<p->nb_stream_indexes; si++){
2045                                     if(f->streams[ p->stream_index[si] ] == ist->st)
2046                                         skip=0;
2047                                 }
2048                         }
2049                     }
2050                     if (ist->discard && ist->st->discard != AVDISCARD_ALL && !skip &&
2051                         ist->st->codec->codec_type == ost->st->codec->codec_type) {
2052                         if(best_nb_frames < ist->st->codec_info_nb_frames){
2053                             best_nb_frames= ist->st->codec_info_nb_frames;
2054                             ost->source_index = j;
2055                             found = 1;
2056                         }
2057                     }
2058                 }
2059
2060                 if (!found) {
2061                     if(! opt_programid) {
2062                         /* try again and reuse existing stream */
2063                         for (j = 0; j < nb_input_streams; j++) {
2064                             ist = &input_streams[j];
2065                             if (   ist->st->codec->codec_type == ost->st->codec->codec_type
2066                                 && ist->st->discard != AVDISCARD_ALL) {
2067                                 ost->source_index = j;
2068                                 found = 1;
2069                             }
2070                         }
2071                     }
2072                     if (!found) {
2073                         int i= ost->file_index;
2074                         av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2075                         fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",
2076                                 ost->file_index, ost->index);
2077                         ffmpeg_exit(1);
2078                     }
2079                 }
2080             }
2081             ist = &input_streams[ost->source_index];
2082             ist->discard = 0;
2083             ost->sync_ist = (nb_stream_maps > 0) ?
2084                 &input_streams[input_files[stream_maps[n].sync_file_index].ist_index +
2085                          stream_maps[n].sync_stream_index] : ist;
2086         }
2087     }
2088
2089     /* for each output stream, we compute the right encoding parameters */
2090     for(i=0;i<nb_ostreams;i++) {
2091         ost = ost_table[i];
2092         os = output_files[ost->file_index];
2093         ist = &input_streams[ost->source_index];
2094
2095         codec = ost->st->codec;
2096         icodec = ist->st->codec;
2097
2098         if (metadata_streams_autocopy)
2099             av_dict_copy(&ost->st->metadata, ist->st->metadata,
2100                          AV_DICT_DONT_OVERWRITE);
2101
2102         ost->st->disposition = ist->st->disposition;
2103         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2104         codec->chroma_sample_location = icodec->chroma_sample_location;
2105
2106         if (ost->st->stream_copy) {
2107             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2108
2109             if (extra_size > INT_MAX)
2110                 goto fail;
2111
2112             /* if stream_copy is selected, no need to decode or encode */
2113             codec->codec_id = icodec->codec_id;
2114             codec->codec_type = icodec->codec_type;
2115
2116             if(!codec->codec_tag){
2117                 if(   !os->oformat->codec_tag
2118                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2119                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2120                     codec->codec_tag = icodec->codec_tag;
2121             }
2122
2123             codec->bit_rate = icodec->bit_rate;
2124             codec->rc_max_rate    = icodec->rc_max_rate;
2125             codec->rc_buffer_size = icodec->rc_buffer_size;
2126             codec->extradata= av_mallocz(extra_size);
2127             if (!codec->extradata)
2128                 goto fail;
2129             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2130             codec->extradata_size= icodec->extradata_size;
2131             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){
2132                 codec->time_base = icodec->time_base;
2133                 codec->time_base.num *= icodec->ticks_per_frame;
2134                 av_reduce(&codec->time_base.num, &codec->time_base.den,
2135                           codec->time_base.num, codec->time_base.den, INT_MAX);
2136             }else
2137                 codec->time_base = ist->st->time_base;
2138             switch(codec->codec_type) {
2139             case AVMEDIA_TYPE_AUDIO:
2140                 if(audio_volume != 256) {
2141                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2142                     ffmpeg_exit(1);
2143                 }
2144                 codec->channel_layout = icodec->channel_layout;
2145                 codec->sample_rate = icodec->sample_rate;
2146                 codec->channels = icodec->channels;
2147                 codec->frame_size = icodec->frame_size;
2148                 codec->audio_service_type = icodec->audio_service_type;
2149                 codec->block_align= icodec->block_align;
2150                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2151                     codec->block_align= 0;
2152                 if(codec->codec_id == CODEC_ID_AC3)
2153                     codec->block_align= 0;
2154                 break;
2155             case AVMEDIA_TYPE_VIDEO:
2156                 codec->pix_fmt = icodec->pix_fmt;
2157                 codec->width = icodec->width;
2158                 codec->height = icodec->height;
2159                 codec->has_b_frames = icodec->has_b_frames;
2160                 if (!codec->sample_aspect_ratio.num) {
2161                     codec->sample_aspect_ratio =
2162                     ost->st->sample_aspect_ratio =
2163                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2164                         ist->st->codec->sample_aspect_ratio.num ?
2165                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2166                 }
2167                 break;
2168             case AVMEDIA_TYPE_SUBTITLE:
2169                 codec->width = icodec->width;
2170                 codec->height = icodec->height;
2171                 break;
2172             case AVMEDIA_TYPE_DATA:
2173                 break;
2174             default:
2175                 abort();
2176             }
2177         } else {
2178             if (!ost->enc)
2179                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2180             switch(codec->codec_type) {
2181             case AVMEDIA_TYPE_AUDIO:
2182                 ost->fifo= av_fifo_alloc(1024);
2183                 if(!ost->fifo)
2184                     goto fail;
2185                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2186                 if (!codec->sample_rate) {
2187                     codec->sample_rate = icodec->sample_rate;
2188                     if (icodec->lowres)
2189                         codec->sample_rate >>= icodec->lowres;
2190                 }
2191                 choose_sample_rate(ost->st, ost->enc);
2192                 codec->time_base = (AVRational){1, codec->sample_rate};
2193                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2194                     codec->sample_fmt = icodec->sample_fmt;
2195                 choose_sample_fmt(ost->st, ost->enc);
2196                 if (!codec->channels)
2197                     codec->channels = icodec->channels;
2198                 codec->channel_layout = icodec->channel_layout;
2199                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2200                     codec->channel_layout = 0;
2201                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2202                 icodec->request_channels = codec->channels;
2203                 ist->decoding_needed = 1;
2204                 ost->encoding_needed = 1;
2205                 ost->resample_sample_fmt  = icodec->sample_fmt;
2206                 ost->resample_sample_rate = icodec->sample_rate;
2207                 ost->resample_channels    = icodec->channels;
2208                 break;
2209             case AVMEDIA_TYPE_VIDEO:
2210                 if (codec->pix_fmt == PIX_FMT_NONE)
2211                     codec->pix_fmt = icodec->pix_fmt;
2212                 choose_pixel_fmt(ost->st, ost->enc);
2213
2214                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2215                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2216                     ffmpeg_exit(1);
2217                 }
2218
2219                 if (!codec->width || !codec->height) {
2220                     codec->width  = icodec->width;
2221                     codec->height = icodec->height;
2222                 }
2223
2224                 ost->video_resample = codec->width   != icodec->width  ||
2225                                       codec->height  != icodec->height ||
2226                                       codec->pix_fmt != icodec->pix_fmt;
2227                 if (ost->video_resample) {
2228 #if !CONFIG_AVFILTER
2229                     avcodec_get_frame_defaults(&ost->pict_tmp);
2230                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2231                                        codec->width, codec->height)) {
2232                         fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
2233                         ffmpeg_exit(1);
2234                     }
2235                     ost->img_resample_ctx = sws_getContext(
2236                         icodec->width,
2237                         icodec->height,
2238                         icodec->pix_fmt,
2239                         codec->width,
2240                         codec->height,
2241                         codec->pix_fmt,
2242                         ost->sws_flags, NULL, NULL, NULL);
2243                     if (ost->img_resample_ctx == NULL) {
2244                         fprintf(stderr, "Cannot get resampling context\n");
2245                         ffmpeg_exit(1);
2246                     }
2247 #endif
2248                     codec->bits_per_raw_sample= 0;
2249                 }
2250
2251                 ost->resample_height = icodec->height;
2252                 ost->resample_width  = icodec->width;
2253                 ost->resample_pix_fmt= icodec->pix_fmt;
2254                 ost->encoding_needed = 1;
2255                 ist->decoding_needed = 1;
2256
2257                 if (!ost->frame_rate.num)
2258                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2259                 if (ost->enc && ost->enc->supported_framerates && !force_fps) {
2260                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2261                     ost->frame_rate = ost->enc->supported_framerates[idx];
2262                 }
2263                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2264
2265 #if CONFIG_AVFILTER
2266                 if (configure_video_filters(ist, ost)) {
2267                     fprintf(stderr, "Error opening filters!\n");
2268                     exit(1);
2269                 }
2270 #endif
2271                 break;
2272             case AVMEDIA_TYPE_SUBTITLE:
2273                 ost->encoding_needed = 1;
2274                 ist->decoding_needed = 1;
2275                 break;
2276             default:
2277                 abort();
2278                 break;
2279             }
2280             /* two pass mode */
2281             if (ost->encoding_needed &&
2282                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2283                 char logfilename[1024];
2284                 FILE *f;
2285
2286                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2287                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2288                          i);
2289                 if (codec->flags & CODEC_FLAG_PASS1) {
2290                     f = fopen(logfilename, "wb");
2291                     if (!f) {
2292                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2293                         ffmpeg_exit(1);
2294                     }
2295                     ost->logfile = f;
2296                 } else {
2297                     char  *logbuffer;
2298                     size_t logbuffer_size;
2299                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2300                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2301                         ffmpeg_exit(1);
2302                     }
2303                     codec->stats_in = logbuffer;
2304                 }
2305             }
2306         }
2307         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2308             int size= codec->width * codec->height;
2309             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2310         }
2311     }
2312
2313     if (!bit_buffer)
2314         bit_buffer = av_malloc(bit_buffer_size);
2315     if (!bit_buffer) {
2316         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2317                 bit_buffer_size);
2318         ret = AVERROR(ENOMEM);
2319         goto fail;
2320     }
2321
2322     /* open each encoder */
2323     for(i=0;i<nb_ostreams;i++) {
2324         ost = ost_table[i];
2325         if (ost->encoding_needed) {
2326             AVCodec *codec = ost->enc;
2327             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2328             if (!codec) {
2329                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2330                          ost->st->codec->codec_id, ost->file_index, ost->index);
2331                 ret = AVERROR(EINVAL);
2332                 goto dump_format;
2333             }
2334             if (dec->subtitle_header) {
2335                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2336                 if (!ost->st->codec->subtitle_header) {
2337                     ret = AVERROR(ENOMEM);
2338                     goto dump_format;
2339                 }
2340                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2341                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2342             }
2343             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2344                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2345                         ost->file_index, ost->index);
2346                 ret = AVERROR(EINVAL);
2347                 goto dump_format;
2348             }
2349             assert_codec_experimental(ost->st->codec, 1);
2350             assert_avoptions(ost->opts);
2351             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2352                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2353                                              "It takes bits/s as argument, not kbits/s\n");
2354             extra_size += ost->st->codec->extradata_size;
2355         }
2356     }
2357
2358     /* open each decoder */
2359     for (i = 0; i < nb_input_streams; i++) {
2360         ist = &input_streams[i];
2361         if (ist->decoding_needed) {
2362             AVCodec *codec = ist->dec;
2363             if (!codec)
2364                 codec = avcodec_find_decoder(ist->st->codec->codec_id);
2365             if (!codec) {
2366                 snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
2367                         ist->st->codec->codec_id, ist->file_index, ist->st->index);
2368                 ret = AVERROR(EINVAL);
2369                 goto dump_format;
2370             }
2371
2372             /* update requested sample format for the decoder based on the
2373                corresponding encoder sample format */
2374             for (j = 0; j < nb_ostreams; j++) {
2375                 ost = ost_table[j];
2376                 if (ost->source_index == i) {
2377                     update_sample_fmt(ist->st->codec, codec, ost->st->codec);
2378                     break;
2379                 }
2380             }
2381
2382             if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2383                 snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
2384                         ist->file_index, ist->st->index);
2385                 ret = AVERROR(EINVAL);
2386                 goto dump_format;
2387             }
2388             assert_codec_experimental(ist->st->codec, 0);
2389             assert_avoptions(ost->opts);
2390         }
2391     }
2392
2393     /* init pts */
2394     for (i = 0; i < nb_input_streams; i++) {
2395         AVStream *st;
2396         ist = &input_streams[i];
2397         st= ist->st;
2398         ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
2399         ist->next_pts = AV_NOPTS_VALUE;
2400         init_pts_correction(&ist->pts_ctx);
2401         ist->is_start = 1;
2402     }
2403
2404     /* set meta data information from input file if required */
2405     for (i=0;i<nb_meta_data_maps;i++) {
2406         AVFormatContext *files[2];
2407         AVDictionary    **meta[2];
2408         int j;
2409
2410 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
2411         if ((index) < 0 || (index) >= (nb_elems)) {\
2412             snprintf(error, sizeof(error), "Invalid %s index %d while processing metadata maps\n",\
2413                      (desc), (index));\
2414             ret = AVERROR(EINVAL);\
2415             goto dump_format;\
2416         }
2417
2418         int out_file_index = meta_data_maps[i][0].file;
2419         int in_file_index = meta_data_maps[i][1].file;
2420         if (in_file_index < 0 || out_file_index < 0)
2421             continue;
2422         METADATA_CHECK_INDEX(out_file_index, nb_output_files, "output file")
2423         METADATA_CHECK_INDEX(in_file_index, nb_input_files, "input file")
2424
2425         files[0] = output_files[out_file_index];
2426         files[1] = input_files[in_file_index].ctx;
2427
2428         for (j = 0; j < 2; j++) {
2429             MetadataMap *map = &meta_data_maps[i][j];
2430
2431             switch (map->type) {
2432             case 'g':
2433                 meta[j] = &files[j]->metadata;
2434                 break;
2435             case 's':
2436                 METADATA_CHECK_INDEX(map->index, files[j]->nb_streams, "stream")
2437                 meta[j] = &files[j]->streams[map->index]->metadata;
2438                 break;
2439             case 'c':
2440                 METADATA_CHECK_INDEX(map->index, files[j]->nb_chapters, "chapter")
2441                 meta[j] = &files[j]->chapters[map->index]->metadata;
2442                 break;
2443             case 'p':
2444                 METADATA_CHECK_INDEX(map->index, files[j]->nb_programs, "program")
2445                 meta[j] = &files[j]->programs[map->index]->metadata;
2446                 break;
2447             }
2448         }
2449
2450         av_dict_copy(meta[0], *meta[1], AV_DICT_DONT_OVERWRITE);
2451     }
2452
2453     /* copy global metadata by default */
2454     if (metadata_global_autocopy) {
2455
2456         for (i = 0; i < nb_output_files; i++)
2457             av_dict_copy(&output_files[i]->metadata, input_files[0].ctx->metadata,
2458                          AV_DICT_DONT_OVERWRITE);
2459     }
2460
2461     /* copy chapters according to chapter maps */
2462     for (i = 0; i < nb_chapter_maps; i++) {
2463         int infile  = chapter_maps[i].in_file;
2464         int outfile = chapter_maps[i].out_file;
2465
2466         if (infile < 0 || outfile < 0)
2467             continue;
2468         if (infile >= nb_input_files) {
2469             snprintf(error, sizeof(error), "Invalid input file index %d in chapter mapping.\n", infile);
2470             ret = AVERROR(EINVAL);
2471             goto dump_format;
2472         }
2473         if (outfile >= nb_output_files) {
2474             snprintf(error, sizeof(error), "Invalid output file index %d in chapter mapping.\n",outfile);
2475             ret = AVERROR(EINVAL);
2476             goto dump_format;
2477         }
2478         copy_chapters(infile, outfile);
2479     }
2480
2481     /* copy chapters from the first input file that has them*/
2482     if (!nb_chapter_maps)
2483         for (i = 0; i < nb_input_files; i++) {
2484             if (!input_files[i].ctx->nb_chapters)
2485                 continue;
2486
2487             for (j = 0; j < nb_output_files; j++)
2488                 if ((ret = copy_chapters(i, j)) < 0)
2489                     goto dump_format;
2490             break;
2491         }
2492
2493     /* open files and write file headers */
2494     for(i=0;i<nb_output_files;i++) {
2495         os = output_files[i];
2496         if (avformat_write_header(os, &output_opts[i]) < 0) {
2497             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2498             ret = AVERROR(EINVAL);
2499             goto dump_format;
2500         }
2501         assert_avoptions(output_opts[i]);
2502         if (strcmp(output_files[i]->oformat->name, "rtp")) {
2503             want_sdp = 0;
2504         }
2505     }
2506
2507  dump_format:
2508     /* dump the file output parameters - cannot be done before in case
2509        of stream copy */
2510     for(i=0;i<nb_output_files;i++) {
2511         av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2512     }
2513
2514     /* dump the stream mapping */
2515     if (verbose >= 0) {
2516         fprintf(stderr, "Stream mapping:\n");
2517         for(i=0;i<nb_ostreams;i++) {
2518             ost = ost_table[i];
2519             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2520                     input_streams[ost->source_index].file_index,
2521                     input_streams[ost->source_index].st->index,
2522                     ost->file_index,
2523                     ost->index);
2524             if (ost->sync_ist != &input_streams[ost->source_index])
2525                 fprintf(stderr, " [sync #%d.%d]",
2526                         ost->sync_ist->file_index,
2527                         ost->sync_ist->st->index);
2528             fprintf(stderr, "\n");
2529         }
2530     }
2531
2532     if (ret) {
2533         fprintf(stderr, "%s\n", error);
2534         goto fail;
2535     }
2536
2537     if (want_sdp) {
2538         print_sdp(output_files, nb_output_files);
2539     }
2540
2541     if (verbose >= 0)
2542         fprintf(stderr, "Press ctrl-c to stop encoding\n");
2543     term_init();
2544
2545     timer_start = av_gettime();
2546
2547     for(; received_sigterm == 0;) {
2548         int file_index, ist_index;
2549         AVPacket pkt;
2550         double ipts_min;
2551         double opts_min;
2552
2553     redo:
2554         ipts_min= 1e100;
2555         opts_min= 1e100;
2556
2557         /* select the stream that we must read now by looking at the
2558            smallest output pts */
2559         file_index = -1;
2560         for(i=0;i<nb_ostreams;i++) {
2561             double ipts, opts;
2562             ost = ost_table[i];
2563             os = output_files[ost->file_index];
2564             ist = &input_streams[ost->source_index];
2565             if(ist->is_past_recording_time || no_packet[ist->file_index])
2566                 continue;
2567                 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2568             ipts = (double)ist->pts;
2569             if (!input_files[ist->file_index].eof_reached){
2570                 if(ipts < ipts_min) {
2571                     ipts_min = ipts;
2572                     if(input_sync ) file_index = ist->file_index;
2573                 }
2574                 if(opts < opts_min) {
2575                     opts_min = opts;
2576                     if(!input_sync) file_index = ist->file_index;
2577                 }
2578             }
2579             if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
2580                 file_index= -1;
2581                 break;
2582             }
2583         }
2584         /* if none, if is finished */
2585         if (file_index < 0) {
2586             if(no_packet_count){
2587                 no_packet_count=0;
2588                 memset(no_packet, 0, sizeof(no_packet));
2589                 usleep(10000);
2590                 continue;
2591             }
2592             break;
2593         }
2594
2595         /* finish if limit size exhausted */
2596         if (limit_filesize != 0 && limit_filesize <= avio_tell(output_files[0]->pb))
2597             break;
2598
2599         /* read a frame from it and output it in the fifo */
2600         is = input_files[file_index].ctx;
2601         ret= av_read_frame(is, &pkt);
2602         if(ret == AVERROR(EAGAIN)){
2603             no_packet[file_index]=1;
2604             no_packet_count++;
2605             continue;
2606         }
2607         if (ret < 0) {
2608             input_files[file_index].eof_reached = 1;
2609             if (opt_shortest)
2610                 break;
2611             else
2612                 continue;
2613         }
2614
2615         no_packet_count=0;
2616         memset(no_packet, 0, sizeof(no_packet));
2617
2618         if (do_pkt_dump) {
2619             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2620                              is->streams[pkt.stream_index]);
2621         }
2622         /* the following test is needed in case new streams appear
2623            dynamically in stream : we ignore them */
2624         if (pkt.stream_index >= input_files[file_index].ctx->nb_streams)
2625             goto discard_packet;
2626         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2627         ist = &input_streams[ist_index];
2628         if (ist->discard)
2629             goto discard_packet;
2630
2631         if (pkt.dts != AV_NOPTS_VALUE)
2632             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2633         if (pkt.pts != AV_NOPTS_VALUE)
2634             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2635
2636         if (ist->ts_scale) {
2637             if(pkt.pts != AV_NOPTS_VALUE)
2638                 pkt.pts *= ist->ts_scale;
2639             if(pkt.dts != AV_NOPTS_VALUE)
2640                 pkt.dts *= ist->ts_scale;
2641         }
2642
2643 //        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);
2644         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2645             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2646             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2647             int64_t delta= pkt_dts - ist->next_pts;
2648             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2649                 input_files[ist->file_index].ts_offset -= delta;
2650                 if (verbose > 2)
2651                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2652                             delta, input_files[ist->file_index].ts_offset);
2653                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2654                 if(pkt.pts != AV_NOPTS_VALUE)
2655                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2656             }
2657         }
2658
2659         /* finish if recording time exhausted */
2660         if (recording_time != INT64_MAX &&
2661             av_compare_ts(pkt.pts, ist->st->time_base, recording_time + start_time, (AVRational){1, 1000000}) >= 0) {
2662             ist->is_past_recording_time = 1;
2663             goto discard_packet;
2664         }
2665
2666         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2667         if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
2668
2669             if (verbose >= 0)
2670                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2671                         ist->file_index, ist->st->index);
2672             if (exit_on_error)
2673                 ffmpeg_exit(1);
2674             av_free_packet(&pkt);
2675             goto redo;
2676         }
2677
2678     discard_packet:
2679         av_free_packet(&pkt);
2680
2681         /* dump report by using the output first video and audio streams */
2682         print_report(output_files, ost_table, nb_ostreams, 0);
2683     }
2684
2685     /* at the end of stream, we must flush the decoder buffers */
2686     for (i = 0; i < nb_input_streams; i++) {
2687         ist = &input_streams[i];
2688         if (ist->decoding_needed) {
2689             output_packet(ist, i, ost_table, nb_ostreams, NULL);
2690         }
2691     }
2692
2693     term_exit();
2694
2695     /* write the trailer if needed and close file */
2696     for(i=0;i<nb_output_files;i++) {
2697         os = output_files[i];
2698         av_write_trailer(os);
2699     }
2700
2701     /* dump report by using the first video and audio streams */
2702     print_report(output_files, ost_table, nb_ostreams, 1);
2703
2704     /* close each encoder */
2705     for(i=0;i<nb_ostreams;i++) {
2706         ost = ost_table[i];
2707         if (ost->encoding_needed) {
2708             av_freep(&ost->st->codec->stats_in);
2709             avcodec_close(ost->st->codec);
2710         }
2711 #if CONFIG_AVFILTER
2712         avfilter_graph_free(&ost->graph);
2713 #endif
2714     }
2715
2716     /* close each decoder */
2717     for (i = 0; i < nb_input_streams; i++) {
2718         ist = &input_streams[i];
2719         if (ist->decoding_needed) {
2720             avcodec_close(ist->st->codec);
2721         }
2722     }
2723
2724     /* finished ! */
2725     ret = 0;
2726
2727  fail:
2728     av_freep(&bit_buffer);
2729
2730     if (ost_table) {
2731         for(i=0;i<nb_ostreams;i++) {
2732             ost = ost_table[i];
2733             if (ost) {
2734                 if (ost->st->stream_copy)
2735                     av_freep(&ost->st->codec->extradata);
2736                 if (ost->logfile) {
2737                     fclose(ost->logfile);
2738                     ost->logfile = NULL;
2739                 }
2740                 av_fifo_free(ost->fifo); /* works even if fifo is not
2741                                              initialized but set to zero */
2742                 av_freep(&ost->st->codec->subtitle_header);
2743                 av_free(ost->pict_tmp.data[0]);
2744                 av_free(ost->forced_kf_pts);
2745                 if (ost->video_resample)
2746                     sws_freeContext(ost->img_resample_ctx);
2747                 if (ost->resample)
2748                     audio_resample_close(ost->resample);
2749                 if (ost->reformat_ctx)
2750                     av_audio_convert_free(ost->reformat_ctx);
2751                 av_dict_free(&ost->opts);
2752                 av_free(ost);
2753             }
2754         }
2755         av_free(ost_table);
2756     }
2757     return ret;
2758 }
2759
2760 static int opt_format(const char *opt, const char *arg)
2761 {
2762     last_asked_format = arg;
2763     return 0;
2764 }
2765
2766 static int opt_video_rc_override_string(const char *opt, const char *arg)
2767 {
2768     video_rc_override_string = arg;
2769     return 0;
2770 }
2771
2772 static int opt_me_threshold(const char *opt, const char *arg)
2773 {
2774     me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2775     return 0;
2776 }
2777
2778 static int opt_verbose(const char *opt, const char *arg)
2779 {
2780     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2781     return 0;
2782 }
2783
2784 static int opt_frame_rate(const char *opt, const char *arg)
2785 {
2786     if (av_parse_video_rate(&frame_rate, arg) < 0) {
2787         fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2788         ffmpeg_exit(1);
2789     }
2790     return 0;
2791 }
2792
2793 static int opt_frame_crop(const char *opt, const char *arg)
2794 {
2795     fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
2796     return AVERROR(EINVAL);
2797 }
2798
2799 static int opt_frame_size(const char *opt, const char *arg)
2800 {
2801     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2802         fprintf(stderr, "Incorrect frame size\n");
2803         return AVERROR(EINVAL);
2804     }
2805     return 0;
2806 }
2807
2808 static int opt_pad(const char *opt, const char *arg) {
2809     fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2810     return -1;
2811 }
2812
2813 static int opt_frame_pix_fmt(const char *opt, const char *arg)
2814 {
2815     if (strcmp(arg, "list")) {
2816         frame_pix_fmt = av_get_pix_fmt(arg);
2817         if (frame_pix_fmt == PIX_FMT_NONE) {
2818             fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2819             return AVERROR(EINVAL);
2820         }
2821     } else {
2822         show_pix_fmts();
2823         ffmpeg_exit(0);
2824     }
2825     return 0;
2826 }
2827
2828 static int opt_frame_aspect_ratio(const char *opt, const char *arg)
2829 {
2830     int x = 0, y = 0;
2831     double ar = 0;
2832     const char *p;
2833     char *end;
2834
2835     p = strchr(arg, ':');
2836     if (p) {
2837         x = strtol(arg, &end, 10);
2838         if (end == p)
2839             y = strtol(end+1, &end, 10);
2840         if (x > 0 && y > 0)
2841             ar = (double)x / (double)y;
2842     } else
2843         ar = strtod(arg, NULL);
2844
2845     if (!ar) {
2846         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2847         return AVERROR(EINVAL);
2848     }
2849     frame_aspect_ratio = ar;
2850     return 0;
2851 }
2852
2853 static int opt_metadata(const char *opt, const char *arg)
2854 {
2855     char *mid= strchr(arg, '=');
2856
2857     if(!mid){
2858         fprintf(stderr, "Missing =\n");
2859         ffmpeg_exit(1);
2860     }
2861     *mid++= 0;
2862
2863     av_dict_set(&metadata, arg, mid, 0);
2864
2865     return 0;
2866 }
2867
2868 static int opt_qscale(const char *opt, const char *arg)
2869 {
2870     video_qscale = parse_number_or_die(opt, arg, OPT_FLOAT, 0, 255);
2871     if (video_qscale == 0) {
2872         fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2873         return AVERROR(EINVAL);
2874     }
2875     return 0;
2876 }
2877
2878 static int opt_top_field_first(const char *opt, const char *arg)
2879 {
2880     top_field_first = parse_number_or_die(opt, arg, OPT_INT, 0, 1);
2881     return 0;
2882 }
2883
2884 static int opt_thread_count(const char *opt, const char *arg)
2885 {
2886     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2887 #if !HAVE_THREADS
2888     if (verbose >= 0)
2889         fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2890 #endif
2891     return 0;
2892 }
2893
2894 static int opt_audio_sample_fmt(const char *opt, const char *arg)
2895 {
2896     if (strcmp(arg, "list")) {
2897         audio_sample_fmt = av_get_sample_fmt(arg);
2898         if (audio_sample_fmt == AV_SAMPLE_FMT_NONE) {
2899             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg);
2900             return AVERROR(EINVAL);
2901         }
2902     } else {
2903         int i;
2904         char fmt_str[128];
2905         for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
2906             printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
2907         ffmpeg_exit(0);
2908     }
2909     return 0;
2910 }
2911
2912 static int opt_audio_rate(const char *opt, const char *arg)
2913 {
2914     audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2915     return 0;
2916 }
2917
2918 static int opt_audio_channels(const char *opt, const char *arg)
2919 {
2920     audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2921     return 0;
2922 }
2923
2924 static int opt_video_channel(const char *opt, const char *arg)
2925 {
2926     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
2927     opt_default("channel", arg);
2928     return 0;
2929 }
2930
2931 static int opt_video_standard(const char *opt, const char *arg)
2932 {
2933     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
2934     opt_default("standard", arg);
2935     return 0;
2936 }
2937
2938 static int opt_codec(int *pstream_copy, char **pcodec_name,
2939                       int codec_type, const char *arg)
2940 {
2941     av_freep(pcodec_name);
2942     if (!strcmp(arg, "copy")) {
2943         *pstream_copy = 1;
2944     } else {
2945         *pcodec_name = av_strdup(arg);
2946     }
2947     return 0;
2948 }
2949
2950 static int opt_audio_codec(const char *opt, const char *arg)
2951 {
2952     return opt_codec(&audio_stream_copy, &audio_codec_name, AVMEDIA_TYPE_AUDIO, arg);
2953 }
2954
2955 static int opt_video_codec(const char *opt, const char *arg)
2956 {
2957     return opt_codec(&video_stream_copy, &video_codec_name, AVMEDIA_TYPE_VIDEO, arg);
2958 }
2959
2960 static int opt_subtitle_codec(const char *opt, const char *arg)
2961 {
2962     return opt_codec(&subtitle_stream_copy, &subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, arg);
2963 }
2964
2965 static int opt_data_codec(const char *opt, const char *arg)
2966 {
2967     return opt_codec(&data_stream_copy, &data_codec_name, AVMEDIA_TYPE_DATA, arg);
2968 }
2969
2970 static int opt_codec_tag(const char *opt, const char *arg)
2971 {
2972     char *tail;
2973     uint32_t *codec_tag;
2974
2975     codec_tag = !strcmp(opt, "atag") ? &audio_codec_tag :
2976                 !strcmp(opt, "vtag") ? &video_codec_tag :
2977                 !strcmp(opt, "stag") ? &subtitle_codec_tag : NULL;
2978     if (!codec_tag)
2979         return -1;
2980
2981     *codec_tag = strtol(arg, &tail, 0);
2982     if (!tail || *tail)
2983         *codec_tag = AV_RL32(arg);
2984
2985     return 0;
2986 }
2987
2988 static int opt_map(const char *opt, const char *arg)
2989 {
2990     StreamMap *m;
2991     char *p;
2992
2993     stream_maps = grow_array(stream_maps, sizeof(*stream_maps), &nb_stream_maps, nb_stream_maps + 1);
2994     m = &stream_maps[nb_stream_maps-1];
2995
2996     m->file_index = strtol(arg, &p, 0);
2997     if (*p)
2998         p++;
2999
3000     m->stream_index = strtol(p, &p, 0);
3001     if (*p) {
3002         p++;
3003         m->sync_file_index = strtol(p, &p, 0);
3004         if (*p)
3005             p++;
3006         m->sync_stream_index = strtol(p, &p, 0);
3007     } else {
3008         m->sync_file_index = m->file_index;
3009         m->sync_stream_index = m->stream_index;
3010     }
3011     return 0;
3012 }
3013
3014 static void parse_meta_type(char *arg, char *type, int *index, char **endptr)
3015 {
3016     *endptr = arg;
3017     if (*arg == ',') {
3018         *type = *(++arg);
3019         switch (*arg) {
3020         case 'g':
3021             break;
3022         case 's':
3023         case 'c':
3024         case 'p':
3025             *index = strtol(++arg, endptr, 0);
3026             break;
3027         default:
3028             fprintf(stderr, "Invalid metadata type %c.\n", *arg);
3029             ffmpeg_exit(1);
3030         }
3031     } else
3032         *type = 'g';
3033 }
3034
3035 static int opt_map_metadata(const char *opt, const char *arg)
3036 {
3037     MetadataMap *m, *m1;
3038     char *p;
3039
3040     meta_data_maps = grow_array(meta_data_maps, sizeof(*meta_data_maps),
3041                                 &nb_meta_data_maps, nb_meta_data_maps + 1);
3042
3043     m = &meta_data_maps[nb_meta_data_maps - 1][0];
3044     m->file = strtol(arg, &p, 0);
3045     parse_meta_type(p, &m->type, &m->index, &p);
3046     if (*p)
3047         p++;
3048
3049     m1 = &meta_data_maps[nb_meta_data_maps - 1][1];
3050     m1->file = strtol(p, &p, 0);
3051     parse_meta_type(p, &m1->type, &m1->index, &p);
3052
3053     if (m->type == 'g' || m1->type == 'g')
3054         metadata_global_autocopy = 0;
3055     if (m->type == 's' || m1->type == 's')
3056         metadata_streams_autocopy = 0;
3057     if (m->type == 'c' || m1->type == 'c')
3058         metadata_chapters_autocopy = 0;
3059
3060     return 0;
3061 }
3062
3063 static int opt_map_meta_data(const char *opt, const char *arg)
3064 {
3065     fprintf(stderr, "-map_meta_data is deprecated and will be removed soon. "
3066                     "Use -map_metadata instead.\n");
3067     return opt_map_metadata(opt, arg);
3068 }
3069
3070 static int opt_map_chapters(const char *opt, const char *arg)
3071 {
3072     ChapterMap *c;
3073     char *p;
3074
3075     chapter_maps = grow_array(chapter_maps, sizeof(*chapter_maps), &nb_chapter_maps,
3076                               nb_chapter_maps + 1);
3077     c = &chapter_maps[nb_chapter_maps - 1];
3078     c->out_file = strtol(arg, &p, 0);
3079     if (*p)
3080         p++;
3081
3082     c->in_file = strtol(p, &p, 0);
3083     return 0;
3084 }
3085
3086 static int opt_input_ts_scale(const char *opt, const char *arg)
3087 {
3088     unsigned int stream;
3089     double scale;
3090     char *p;
3091
3092     stream = strtol(arg, &p, 0);
3093     if (*p)
3094         p++;
3095     scale= strtod(p, &p);
3096
3097     ts_scale = grow_array(ts_scale, sizeof(*ts_scale), &nb_ts_scale, stream + 1);
3098     ts_scale[stream] = scale;
3099     return 0;
3100 }
3101
3102 static int opt_recording_time(const char *opt, const char *arg)
3103 {
3104     recording_time = parse_time_or_die(opt, arg, 1);
3105     return 0;
3106 }
3107
3108 static int opt_start_time(const char *opt, const char *arg)
3109 {
3110     start_time = parse_time_or_die(opt, arg, 1);
3111     return 0;
3112 }
3113
3114 static int opt_recording_timestamp(const char *opt, const char *arg)
3115 {
3116     char buf[128];
3117     int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
3118     struct tm time = *gmtime((time_t*)&recording_timestamp);
3119     strftime(buf, sizeof(buf), "creation_time=%FT%T%z", &time);
3120     opt_metadata("metadata", buf);
3121
3122     av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
3123                                  "tag instead.\n", opt);
3124     return 0;
3125 }
3126
3127 static int opt_input_ts_offset(const char *opt, const char *arg)
3128 {
3129     input_ts_offset = parse_time_or_die(opt, arg, 1);
3130     return 0;
3131 }
3132
3133 static enum CodecID find_codec_or_die(const char *name, int type, int encoder)
3134 {
3135     const char *codec_string = encoder ? "encoder" : "decoder";
3136     AVCodec *codec;
3137
3138     if(!name)
3139         return CODEC_ID_NONE;
3140     codec = encoder ?
3141         avcodec_find_encoder_by_name(name) :
3142         avcodec_find_decoder_by_name(name);
3143     if(!codec) {
3144         fprintf(stderr, "Unknown %s '%s'\n", codec_string, name);
3145         ffmpeg_exit(1);
3146     }
3147     if(codec->type != type) {
3148         fprintf(stderr, "Invalid %s type '%s'\n", codec_string, name);
3149         ffmpeg_exit(1);
3150     }
3151     return codec->id;
3152 }
3153
3154 static int opt_input_file(const char *opt, const char *filename)
3155 {
3156     AVFormatContext *ic;
3157     AVInputFormat *file_iformat = NULL;
3158     int err, i, ret, rfps, rfps_base;
3159     int64_t timestamp;
3160     uint8_t buf[128];
3161     AVDictionary **opts;
3162     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
3163
3164     if (last_asked_format) {
3165         if (!(file_iformat = av_find_input_format(last_asked_format))) {
3166             fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
3167             ffmpeg_exit(1);
3168         }
3169         last_asked_format = NULL;
3170     }
3171
3172     if (!strcmp(filename, "-"))
3173         filename = "pipe:";
3174
3175     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3176                     !strcmp(filename, "/dev/stdin");
3177
3178     /* get default parameters from command line */
3179     ic = avformat_alloc_context();
3180     if (!ic) {
3181         print_error(filename, AVERROR(ENOMEM));
3182         ffmpeg_exit(1);
3183     }
3184     if (audio_sample_rate) {
3185         snprintf(buf, sizeof(buf), "%d", audio_sample_rate);
3186         av_dict_set(&format_opts, "sample_rate", buf, 0);
3187     }
3188     if (audio_channels) {
3189         snprintf(buf, sizeof(buf), "%d", audio_channels);
3190         av_dict_set(&format_opts, "channels", buf, 0);
3191     }
3192     if (frame_rate.num) {
3193         snprintf(buf, sizeof(buf), "%d/%d", frame_rate.num, frame_rate.den);
3194         av_dict_set(&format_opts, "framerate", buf, 0);
3195     }
3196     if (frame_width && frame_height) {
3197         snprintf(buf, sizeof(buf), "%dx%d", frame_width, frame_height);
3198         av_dict_set(&format_opts, "video_size", buf, 0);
3199     }
3200     if (frame_pix_fmt != PIX_FMT_NONE)
3201         av_dict_set(&format_opts, "pixel_format", av_get_pix_fmt_name(frame_pix_fmt), 0);
3202
3203     ic->video_codec_id   =
3204         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0);
3205     ic->audio_codec_id   =
3206         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0);
3207     ic->subtitle_codec_id=
3208         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0);
3209     ic->flags |= AVFMT_FLAG_NONBLOCK;
3210
3211     /* open the input file with generic libav function */
3212     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3213     if (err < 0) {
3214         print_error(filename, err);
3215         ffmpeg_exit(1);
3216     }
3217     assert_avoptions(format_opts);
3218
3219     if(opt_programid) {
3220         int i, j;
3221         int found=0;
3222         for(i=0; i<ic->nb_streams; i++){
3223             ic->streams[i]->discard= AVDISCARD_ALL;
3224         }
3225         for(i=0; i<ic->nb_programs; i++){
3226             AVProgram *p= ic->programs[i];
3227             if(p->id != opt_programid){
3228                 p->discard = AVDISCARD_ALL;
3229             }else{
3230                 found=1;
3231                 for(j=0; j<p->nb_stream_indexes; j++){
3232                     ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
3233                 }
3234             }
3235         }
3236         if(!found){
3237             fprintf(stderr, "Specified program id not found\n");
3238             ffmpeg_exit(1);
3239         }
3240         opt_programid=0;
3241     }
3242
3243     if (loop_input) {
3244         av_log(NULL, AV_LOG_WARNING, "-loop_input is deprecated, use -loop 1\n");
3245         ic->loop_input = loop_input;
3246     }
3247
3248     /* Set AVCodecContext options for avformat_find_stream_info */
3249     opts = setup_find_stream_info_opts(ic, codec_opts);
3250     orig_nb_streams = ic->nb_streams;
3251
3252     /* If not enough info to get the stream parameters, we decode the
3253        first frames to get it. (used in mpeg case for example) */
3254     ret = avformat_find_stream_info(ic, opts);
3255     if (ret < 0 && verbose >= 0) {
3256         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3257         av_close_input_file(ic);
3258         ffmpeg_exit(1);
3259     }
3260
3261     timestamp = start_time;
3262     /* add the stream start time */
3263     if (ic->start_time != AV_NOPTS_VALUE)
3264         timestamp += ic->start_time;
3265
3266     /* if seeking requested, we execute it */
3267     if (start_time != 0) {
3268         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3269         if (ret < 0) {
3270             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3271                     filename, (double)timestamp / AV_TIME_BASE);
3272         }
3273         /* reset seek info */
3274         start_time = 0;
3275     }
3276
3277     /* update the current parameters so that they match the one of the input stream */
3278     for(i=0;i<ic->nb_streams;i++) {
3279         AVStream *st = ic->streams[i];
3280         AVCodecContext *dec = st->codec;
3281         InputStream *ist;
3282
3283         dec->thread_count = thread_count;
3284
3285         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3286         ist = &input_streams[nb_input_streams - 1];
3287         ist->st = st;
3288         ist->file_index = nb_input_files;
3289         ist->discard = 1;
3290         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
3291
3292         if (i < nb_ts_scale)
3293             ist->ts_scale = ts_scale[i];
3294
3295         switch (dec->codec_type) {
3296         case AVMEDIA_TYPE_AUDIO:
3297             ist->dec = avcodec_find_decoder_by_name(audio_codec_name);
3298             if(audio_disable)
3299                 st->discard= AVDISCARD_ALL;
3300             break;
3301         case AVMEDIA_TYPE_VIDEO:
3302             ist->dec = avcodec_find_decoder_by_name(video_codec_name);
3303             rfps      = ic->streams[i]->r_frame_rate.num;
3304             rfps_base = ic->streams[i]->r_frame_rate.den;
3305             if (dec->lowres) {
3306                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3307                 dec->height >>= dec->lowres;
3308                 dec->width  >>= dec->lowres;
3309             }
3310             if(me_threshold)
3311                 dec->debug |= FF_DEBUG_MV;
3312
3313             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3314
3315                 if (verbose >= 0)
3316                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3317                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3318
3319                     (float)rfps / rfps_base, rfps, rfps_base);
3320             }
3321
3322             if(video_disable)
3323                 st->discard= AVDISCARD_ALL;
3324             else if(video_discard)
3325                 st->discard= video_discard;
3326             break;
3327         case AVMEDIA_TYPE_DATA:
3328             break;
3329         case AVMEDIA_TYPE_SUBTITLE:
3330             ist->dec = avcodec_find_decoder_by_name(subtitle_codec_name);
3331             if(subtitle_disable)
3332                 st->discard = AVDISCARD_ALL;
3333             break;
3334         case AVMEDIA_TYPE_ATTACHMENT:
3335         case AVMEDIA_TYPE_UNKNOWN:
3336             break;
3337         default:
3338             abort();
3339         }
3340     }
3341
3342     /* dump the file content */
3343     if (verbose >= 0)
3344         av_dump_format(ic, nb_input_files, filename, 0);
3345
3346     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3347     input_files[nb_input_files - 1].ctx        = ic;
3348     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3349     input_files[nb_input_files - 1].ts_offset  = input_ts_offset - (copy_ts ? 0 : timestamp);
3350
3351     frame_rate    = (AVRational){0, 0};
3352     frame_pix_fmt = PIX_FMT_NONE;
3353     frame_height = 0;
3354     frame_width  = 0;
3355     audio_sample_rate = 0;
3356     audio_channels    = 0;
3357     audio_sample_fmt  = AV_SAMPLE_FMT_NONE;
3358     av_freep(&ts_scale);
3359     nb_ts_scale = 0;
3360
3361     for (i = 0; i < orig_nb_streams; i++)
3362         av_dict_free(&opts[i]);
3363     av_freep(&opts);
3364     av_freep(&video_codec_name);
3365     av_freep(&audio_codec_name);
3366     av_freep(&subtitle_codec_name);
3367     uninit_opts();
3368     init_opts();
3369     return 0;
3370 }
3371
3372 static void check_inputs(int *has_video_ptr,
3373                          int *has_audio_ptr,
3374                          int *has_subtitle_ptr,
3375                          int *has_data_ptr)
3376 {
3377     int has_video, has_audio, has_subtitle, has_data, i, j;
3378     AVFormatContext *ic;
3379
3380     has_video = 0;
3381     has_audio = 0;
3382     has_subtitle = 0;
3383     has_data = 0;
3384
3385     for(j=0;j<nb_input_files;j++) {
3386         ic = input_files[j].ctx;
3387         for(i=0;i<ic->nb_streams;i++) {
3388             AVCodecContext *enc = ic->streams[i]->codec;
3389             switch(enc->codec_type) {
3390             case AVMEDIA_TYPE_AUDIO:
3391                 has_audio = 1;
3392                 break;
3393             case AVMEDIA_TYPE_VIDEO:
3394                 has_video = 1;
3395                 break;
3396             case AVMEDIA_TYPE_SUBTITLE:
3397                 has_subtitle = 1;
3398                 break;
3399             case AVMEDIA_TYPE_DATA:
3400             case AVMEDIA_TYPE_ATTACHMENT:
3401             case AVMEDIA_TYPE_UNKNOWN:
3402                 has_data = 1;
3403                 break;
3404             default:
3405                 abort();
3406             }
3407         }
3408     }
3409     *has_video_ptr = has_video;
3410     *has_audio_ptr = has_audio;
3411     *has_subtitle_ptr = has_subtitle;
3412     *has_data_ptr = has_data;
3413 }
3414
3415 static void new_video_stream(AVFormatContext *oc, int file_idx)
3416 {
3417     AVStream *st;
3418     OutputStream *ost;
3419     AVCodecContext *video_enc;
3420     enum CodecID codec_id = CODEC_ID_NONE;
3421     AVCodec *codec= NULL;
3422
3423     if(!video_stream_copy){
3424         if (video_codec_name) {
3425             codec_id = find_codec_or_die(video_codec_name, AVMEDIA_TYPE_VIDEO, 1);
3426             codec = avcodec_find_encoder_by_name(video_codec_name);
3427         } else {
3428             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_VIDEO);
3429             codec = avcodec_find_encoder(codec_id);
3430         }
3431     }
3432
3433     ost = new_output_stream(oc, file_idx, codec);
3434     st  = ost->st;
3435     if (!video_stream_copy) {
3436         ost->frame_aspect_ratio = frame_aspect_ratio;
3437         frame_aspect_ratio = 0;
3438 #if CONFIG_AVFILTER
3439         ost->avfilter= vfilters;
3440         vfilters = NULL;
3441 #endif
3442     }
3443
3444     ost->bitstream_filters = video_bitstream_filters;
3445     video_bitstream_filters= NULL;
3446
3447     st->codec->thread_count= thread_count;
3448
3449     video_enc = st->codec;
3450
3451     if(video_codec_tag)
3452         video_enc->codec_tag= video_codec_tag;
3453
3454     if(oc->oformat->flags & AVFMT_GLOBALHEADER) {
3455         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3456     }
3457
3458     video_enc->codec_type = AVMEDIA_TYPE_VIDEO;
3459     if (video_stream_copy) {
3460         st->stream_copy = 1;
3461         video_enc->sample_aspect_ratio =
3462         st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3463     } else {
3464         const char *p;
3465         int i;
3466
3467         if (frame_rate.num)
3468             ost->frame_rate = frame_rate;
3469         video_enc->codec_id = codec_id;
3470
3471         video_enc->width = frame_width;
3472         video_enc->height = frame_height;
3473         video_enc->pix_fmt = frame_pix_fmt;
3474         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3475
3476         if (intra_only)
3477             video_enc->gop_size = 0;
3478         if (video_qscale || same_quality) {
3479             video_enc->flags |= CODEC_FLAG_QSCALE;
3480             video_enc->global_quality = FF_QP2LAMBDA * video_qscale;
3481         }
3482
3483         if(intra_matrix)
3484             video_enc->intra_matrix = intra_matrix;
3485         if(inter_matrix)
3486             video_enc->inter_matrix = inter_matrix;
3487
3488         p= video_rc_override_string;
3489         for(i=0; p; i++){
3490             int start, end, q;
3491             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3492             if(e!=3){
3493                 fprintf(stderr, "error parsing rc_override\n");
3494                 ffmpeg_exit(1);
3495             }
3496             video_enc->rc_override=
3497                 av_realloc(video_enc->rc_override,
3498                            sizeof(RcOverride)*(i+1));
3499             video_enc->rc_override[i].start_frame= start;
3500             video_enc->rc_override[i].end_frame  = end;
3501             if(q>0){
3502                 video_enc->rc_override[i].qscale= q;
3503                 video_enc->rc_override[i].quality_factor= 1.0;
3504             }
3505             else{
3506                 video_enc->rc_override[i].qscale= 0;
3507                 video_enc->rc_override[i].quality_factor= -q/100.0;
3508             }
3509             p= strchr(p, '/');
3510             if(p) p++;
3511         }
3512         video_enc->rc_override_count=i;
3513         if (!video_enc->rc_initial_buffer_occupancy)
3514             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3515         video_enc->me_threshold= me_threshold;
3516         video_enc->intra_dc_precision= intra_dc_precision - 8;
3517
3518         if (do_psnr)
3519             video_enc->flags|= CODEC_FLAG_PSNR;
3520
3521         /* two pass mode */
3522         if (do_pass) {
3523             if (do_pass == 1) {
3524                 video_enc->flags |= CODEC_FLAG_PASS1;
3525             } else {
3526                 video_enc->flags |= CODEC_FLAG_PASS2;
3527             }
3528         }
3529
3530         if (forced_key_frames)
3531             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3532     }
3533     if (video_language) {
3534         av_dict_set(&st->metadata, "language", video_language, 0);
3535         av_freep(&video_language);
3536     }
3537
3538     /* reset some key parameters */
3539     video_disable = 0;
3540     av_freep(&video_codec_name);
3541     av_freep(&forced_key_frames);
3542     video_stream_copy = 0;
3543     frame_pix_fmt = PIX_FMT_NONE;
3544 }
3545
3546 static void new_audio_stream(AVFormatContext *oc, int file_idx)
3547 {
3548     AVStream *st;
3549     OutputStream *ost;
3550     AVCodec *codec= NULL;
3551     AVCodecContext *audio_enc;
3552     enum CodecID codec_id = CODEC_ID_NONE;
3553
3554     if(!audio_stream_copy){
3555         if (audio_codec_name) {
3556             codec_id = find_codec_or_die(audio_codec_name, AVMEDIA_TYPE_AUDIO, 1);
3557             codec = avcodec_find_encoder_by_name(audio_codec_name);
3558         } else {
3559             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_AUDIO);
3560             codec = avcodec_find_encoder(codec_id);
3561         }
3562     }
3563     ost = new_output_stream(oc, file_idx, codec);
3564     st  = ost->st;
3565
3566     ost->bitstream_filters = audio_bitstream_filters;
3567     audio_bitstream_filters= NULL;
3568
3569     st->codec->thread_count= thread_count;
3570
3571     audio_enc = st->codec;
3572     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3573
3574     if(audio_codec_tag)
3575         audio_enc->codec_tag= audio_codec_tag;
3576
3577     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3578         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3579     }
3580     if (audio_stream_copy) {
3581         st->stream_copy = 1;
3582     } else {
3583         audio_enc->codec_id = codec_id;
3584
3585         if (audio_qscale > QSCALE_NONE) {
3586             audio_enc->flags |= CODEC_FLAG_QSCALE;
3587             audio_enc->global_quality = FF_QP2LAMBDA * audio_qscale;
3588         }
3589         if (audio_channels)
3590             audio_enc->channels = audio_channels;
3591         if (audio_sample_fmt != AV_SAMPLE_FMT_NONE)
3592             audio_enc->sample_fmt = audio_sample_fmt;
3593         if (audio_sample_rate)
3594             audio_enc->sample_rate = audio_sample_rate;
3595     }
3596     if (audio_language) {
3597         av_dict_set(&st->metadata, "language", audio_language, 0);
3598         av_freep(&audio_language);
3599     }
3600
3601     /* reset some key parameters */
3602     audio_disable = 0;
3603     av_freep(&audio_codec_name);
3604     audio_stream_copy = 0;
3605 }
3606
3607 static void new_data_stream(AVFormatContext *oc, int file_idx)
3608 {
3609     AVStream *st;
3610     OutputStream *ost;
3611     AVCodecContext *data_enc;
3612
3613     ost = new_output_stream(oc, file_idx, NULL);
3614     st  = ost->st;
3615     data_enc = st->codec;
3616     if (!data_stream_copy) {
3617         fprintf(stderr, "Data stream encoding not supported yet (only streamcopy)\n");
3618         ffmpeg_exit(1);
3619     }
3620
3621     data_enc->codec_type = AVMEDIA_TYPE_DATA;
3622
3623     if (data_codec_tag)
3624         data_enc->codec_tag= data_codec_tag;
3625
3626     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3627         data_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3628     }
3629     if (data_stream_copy) {
3630         st->stream_copy = 1;
3631     }
3632
3633     data_disable = 0;
3634     av_freep(&data_codec_name);
3635     data_stream_copy = 0;
3636 }
3637
3638 static void new_subtitle_stream(AVFormatContext *oc, int file_idx)
3639 {
3640     AVStream *st;
3641     OutputStream *ost;
3642     AVCodec *codec=NULL;
3643     AVCodecContext *subtitle_enc;
3644     enum CodecID codec_id = CODEC_ID_NONE;
3645
3646     if(!subtitle_stream_copy){
3647         if (subtitle_codec_name) {
3648             codec_id = find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 1);
3649             codec = avcodec_find_encoder_by_name(subtitle_codec_name);
3650         } else {