ac3enc: add channel coupling support
[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/pixdesc.h"
43 #include "libavutil/avstring.h"
44 #include "libavutil/libm.h"
45 #include "libavformat/os_support.h"
46
47 #if CONFIG_AVFILTER
48 # include "libavfilter/avfilter.h"
49 # include "libavfilter/avfiltergraph.h"
50 # include "libavfilter/vsrc_buffer.h"
51 #endif
52
53 #if HAVE_SYS_RESOURCE_H
54 #include <sys/types.h>
55 #include <sys/time.h>
56 #include <sys/resource.h>
57 #elif HAVE_GETPROCESSTIMES
58 #include <windows.h>
59 #endif
60 #if HAVE_GETPROCESSMEMORYINFO
61 #include <windows.h>
62 #include <psapi.h>
63 #endif
64
65 #if HAVE_SYS_SELECT_H
66 #include <sys/select.h>
67 #endif
68
69 #include <time.h>
70
71 #include "cmdutils.h"
72
73 #include "libavutil/avassert.h"
74
75 const char program_name[] = "ffmpeg";
76 const int program_birth_year = 2000;
77
78 /* select an input stream for an output stream */
79 typedef struct AVStreamMap {
80     int file_index;
81     int stream_index;
82     int sync_file_index;
83     int sync_stream_index;
84 } AVStreamMap;
85
86 /**
87  * select an input file for an output file
88  */
89 typedef struct AVMetaDataMap {
90     int  file;      //< file index
91     char type;      //< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
92     int  index;     //< stream/chapter/program number
93 } AVMetaDataMap;
94
95 typedef struct AVChapterMap {
96     int in_file;
97     int out_file;
98 } AVChapterMap;
99
100 static const OptionDef options[];
101
102 #define MAX_FILES 100
103 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
104
105 #define FFM_PACKET_SIZE 4096 //XXX a duplicate of the line in ffm.h
106
107 static const char *last_asked_format = NULL;
108 static AVFormatContext *input_files[MAX_FILES];
109 static int64_t input_files_ts_offset[MAX_FILES];
110 static double *input_files_ts_scale[MAX_FILES] = {NULL};
111 static AVCodec **input_codecs = NULL;
112 static int nb_input_files = 0;
113 static int nb_input_codecs = 0;
114 static int nb_input_files_ts_scale[MAX_FILES] = {0};
115
116 static AVFormatContext *output_files[MAX_FILES];
117 static AVCodec **output_codecs = NULL;
118 static int nb_output_files = 0;
119 static int nb_output_codecs = 0;
120
121 static AVStreamMap *stream_maps = NULL;
122 static int nb_stream_maps;
123
124 /* first item specifies output metadata, second is input */
125 static AVMetaDataMap (*meta_data_maps)[2] = NULL;
126 static int nb_meta_data_maps;
127 static int metadata_global_autocopy   = 1;
128 static int metadata_streams_autocopy  = 1;
129 static int metadata_chapters_autocopy = 1;
130
131 static AVChapterMap *chapter_maps = NULL;
132 static int nb_chapter_maps;
133
134 /* indexed by output file stream index */
135 static int *streamid_map = NULL;
136 static int nb_streamid_map = 0;
137
138 static int frame_width  = 0;
139 static int frame_height = 0;
140 static float frame_aspect_ratio = 0;
141 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
142 static enum AVSampleFormat audio_sample_fmt = AV_SAMPLE_FMT_NONE;
143 static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
144 static AVRational frame_rate;
145 static float video_qscale = 0;
146 static uint16_t *intra_matrix = NULL;
147 static uint16_t *inter_matrix = NULL;
148 static const char *video_rc_override_string=NULL;
149 static int video_disable = 0;
150 static int video_discard = 0;
151 static char *video_codec_name = NULL;
152 static unsigned int video_codec_tag = 0;
153 static char *video_language = NULL;
154 static int same_quality = 0;
155 static int do_deinterlace = 0;
156 static int top_field_first = -1;
157 static int me_threshold = 0;
158 static int intra_dc_precision = 8;
159 static int loop_input = 0;
160 static int loop_output = AVFMT_NOOUTPUTLOOP;
161 static int qp_hist = 0;
162 #if CONFIG_AVFILTER
163 static char *vfilters = NULL;
164 #endif
165
166 static int intra_only = 0;
167 static int audio_sample_rate = 44100;
168 static int64_t channel_layout = 0;
169 #define QSCALE_NONE -99999
170 static float audio_qscale = QSCALE_NONE;
171 static int audio_disable = 0;
172 static int audio_channels = 1;
173 static char  *audio_codec_name = NULL;
174 static unsigned int audio_codec_tag = 0;
175 static char *audio_language = NULL;
176
177 static int subtitle_disable = 0;
178 static char *subtitle_codec_name = NULL;
179 static char *subtitle_language = NULL;
180 static unsigned int subtitle_codec_tag = 0;
181
182 static int data_disable = 0;
183 static char *data_codec_name = NULL;
184 static unsigned int data_codec_tag = 0;
185
186 static float mux_preload= 0.5;
187 static float mux_max_delay= 0.7;
188
189 static int64_t recording_time = INT64_MAX;
190 static int64_t start_time = 0;
191 static int64_t recording_timestamp = 0;
192 static int64_t input_ts_offset = 0;
193 static int file_overwrite = 0;
194 static AVMetadata *metadata;
195 static int do_benchmark = 0;
196 static int do_hex_dump = 0;
197 static int do_pkt_dump = 0;
198 static int do_psnr = 0;
199 static int do_pass = 0;
200 static char *pass_logfilename_prefix = NULL;
201 static int audio_stream_copy = 0;
202 static int video_stream_copy = 0;
203 static int subtitle_stream_copy = 0;
204 static int data_stream_copy = 0;
205 static int video_sync_method= -1;
206 static int audio_sync_method= 0;
207 static float audio_drift_threshold= 0.1;
208 static int copy_ts= 0;
209 static int copy_tb;
210 static int opt_shortest = 0;
211 static char *vstats_filename;
212 static FILE *vstats_file;
213 static int opt_programid = 0;
214 static int copy_initial_nonkeyframes = 0;
215
216 static int rate_emu = 0;
217
218 static int  video_channel = 0;
219 static char *video_standard;
220
221 static int audio_volume = 256;
222
223 static int exit_on_error = 0;
224 static int using_stdin = 0;
225 static int verbose = 1;
226 static int thread_count= 1;
227 static int64_t video_size = 0;
228 static int64_t audio_size = 0;
229 static int64_t extra_size = 0;
230 static int nb_frames_dup = 0;
231 static int nb_frames_drop = 0;
232 static int input_sync;
233 static uint64_t limit_filesize = 0;
234 static int force_fps = 0;
235 static char *forced_key_frames = NULL;
236
237 static float dts_delta_threshold = 10;
238
239 static int64_t timer_start;
240
241 static uint8_t *audio_buf;
242 static uint8_t *audio_out;
243 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
244
245 static short *samples;
246
247 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
248 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
249 static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL;
250
251 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
252
253 struct AVInputStream;
254
255 typedef struct AVOutputStream {
256     int file_index;          /* file index */
257     int index;               /* stream index in the output file */
258     int source_index;        /* AVInputStream index */
259     AVStream *st;            /* stream in the output file */
260     int encoding_needed;     /* true if encoding needed for this stream */
261     int frame_number;
262     /* input pts and corresponding output pts
263        for A/V sync */
264     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
265     struct AVInputStream *sync_ist; /* input stream to sync against */
266     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
267     AVBitStreamFilterContext *bitstream_filters;
268     /* video only */
269     int video_resample;
270     AVFrame pict_tmp;      /* temporary image for resampling */
271     struct SwsContext *img_resample_ctx; /* for image resampling */
272     int resample_height;
273     int resample_width;
274     int resample_pix_fmt;
275
276     float frame_aspect_ratio;
277
278     /* forced key frames */
279     int64_t *forced_kf_pts;
280     int forced_kf_count;
281     int forced_kf_index;
282
283     /* audio only */
284     int audio_resample;
285     ReSampleContext *resample; /* for audio resampling */
286     int resample_sample_fmt;
287     int resample_channels;
288     int resample_sample_rate;
289     int reformat_pair;
290     AVAudioConvert *reformat_ctx;
291     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
292     FILE *logfile;
293
294 #if CONFIG_AVFILTER
295     AVFilterContext *output_video_filter;
296     AVFilterContext *input_video_filter;
297     AVFilterBufferRef *picref;
298     char *avfilter;
299     AVFilterGraph *graph;
300 #endif
301
302    int sws_flags;
303 } AVOutputStream;
304
305 static AVOutputStream **output_streams_for_file[MAX_FILES] = { NULL };
306 static int nb_output_streams_for_file[MAX_FILES] = { 0 };
307
308 typedef struct AVInputStream {
309     int file_index;
310     int index;
311     AVStream *st;
312     int discard;             /* true if stream data should be discarded */
313     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
314     int64_t sample_index;      /* current sample */
315
316     int64_t       start;     /* time when read started */
317     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
318                                 is not defined */
319     int64_t       pts;       /* current pts */
320     PtsCorrectionContext pts_ctx;
321     int is_start;            /* is 1 at the start and after a discontinuity */
322     int showed_multi_packet_warning;
323     int is_past_recording_time;
324 #if CONFIG_AVFILTER
325     AVFrame *filter_frame;
326     int has_filter_frame;
327 #endif
328 } AVInputStream;
329
330 typedef struct AVInputFile {
331     int eof_reached;      /* true if eof reached */
332     int ist_index;        /* index of first stream in ist_table */
333     int buffer_size;      /* current total buffer size */
334     int nb_streams;       /* nb streams we are aware of */
335 } AVInputFile;
336
337 #if CONFIG_AVFILTER
338
339 static int configure_video_filters(AVInputStream *ist, AVOutputStream *ost)
340 {
341     AVFilterContext *last_filter, *filter;
342     /** filter graph containing all filters including input & output */
343     AVCodecContext *codec = ost->st->codec;
344     AVCodecContext *icodec = ist->st->codec;
345     FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
346     AVRational sample_aspect_ratio;
347     char args[255];
348     int ret;
349
350     ost->graph = avfilter_graph_alloc();
351
352     if (ist->st->sample_aspect_ratio.num){
353         sample_aspect_ratio = ist->st->sample_aspect_ratio;
354     }else
355         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
356
357     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
358              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
359              sample_aspect_ratio.num, sample_aspect_ratio.den);
360
361     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
362                                        "src", args, NULL, ost->graph);
363     if (ret < 0)
364         return ret;
365     ret = avfilter_graph_create_filter(&ost->output_video_filter, &ffsink,
366                                        "out", NULL, &ffsink_ctx, ost->graph);
367     if (ret < 0)
368         return ret;
369     last_filter = ost->input_video_filter;
370
371     if (codec->width  != icodec->width || codec->height != icodec->height) {
372         snprintf(args, 255, "%d:%d:flags=0x%X",
373                  codec->width,
374                  codec->height,
375                  ost->sws_flags);
376         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
377                                                 NULL, args, NULL, ost->graph)) < 0)
378             return ret;
379         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
380             return ret;
381         last_filter = filter;
382     }
383
384     snprintf(args, sizeof(args), "flags=0x%X", ost->sws_flags);
385     ost->graph->scale_sws_opts = av_strdup(args);
386
387     if (ost->avfilter) {
388         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
389         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
390
391         outputs->name    = av_strdup("in");
392         outputs->filter_ctx = last_filter;
393         outputs->pad_idx = 0;
394         outputs->next    = NULL;
395
396         inputs->name    = av_strdup("out");
397         inputs->filter_ctx = ost->output_video_filter;
398         inputs->pad_idx = 0;
399         inputs->next    = NULL;
400
401         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, inputs, outputs, NULL)) < 0)
402             return ret;
403         av_freep(&ost->avfilter);
404     } else {
405         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
406             return ret;
407     }
408
409     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
410         return ret;
411
412     codec->width  = ost->output_video_filter->inputs[0]->w;
413     codec->height = ost->output_video_filter->inputs[0]->h;
414     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
415         ost->frame_aspect_ratio ? // overriden by the -aspect cli option
416         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
417         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
418
419     return 0;
420 }
421 #endif /* CONFIG_AVFILTER */
422
423 static void term_exit(void)
424 {
425     av_log(NULL, AV_LOG_QUIET, "");
426 }
427
428 static volatile int received_sigterm = 0;
429 static volatile int received_nb_signals = 0;
430
431 static void
432 sigterm_handler(int sig)
433 {
434     received_sigterm = sig;
435     received_nb_signals++;
436     term_exit();
437 }
438
439 static void term_init(void)
440 {
441     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
442     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
443 #ifdef SIGXCPU
444     signal(SIGXCPU, sigterm_handler);
445 #endif
446 }
447
448 static int decode_interrupt_cb(void)
449 {
450     return received_nb_signals > 1;
451 }
452
453 static int ffmpeg_exit(int ret)
454 {
455     int i;
456
457     /* close files */
458     for(i=0;i<nb_output_files;i++) {
459         AVFormatContext *s = output_files[i];
460         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
461             avio_close(s->pb);
462         avformat_free_context(s);
463         av_free(output_streams_for_file[i]);
464     }
465     for(i=0;i<nb_input_files;i++) {
466         av_close_input_file(input_files[i]);
467         av_free(input_files_ts_scale[i]);
468     }
469
470     av_free(intra_matrix);
471     av_free(inter_matrix);
472
473     if (vstats_file)
474         fclose(vstats_file);
475     av_free(vstats_filename);
476
477     av_free(streamid_map);
478     av_free(input_codecs);
479     av_free(output_codecs);
480     av_free(stream_maps);
481     av_free(meta_data_maps);
482
483     av_free(video_codec_name);
484     av_free(audio_codec_name);
485     av_free(subtitle_codec_name);
486     av_free(data_codec_name);
487
488     av_free(video_standard);
489
490     uninit_opts();
491     av_free(audio_buf);
492     av_free(audio_out);
493     allocated_audio_buf_size= allocated_audio_out_size= 0;
494     av_free(samples);
495
496 #if CONFIG_AVFILTER
497     avfilter_uninit();
498 #endif
499
500     if (received_sigterm) {
501         fprintf(stderr,
502             "Received signal %d: terminating.\n",
503             (int) received_sigterm);
504         exit (255);
505     }
506
507     exit(ret); /* not all OS-es handle main() return value */
508     return ret;
509 }
510
511 /* similar to ff_dynarray_add() and av_fast_realloc() */
512 static void *grow_array(void *array, int elem_size, int *size, int new_size)
513 {
514     if (new_size >= INT_MAX / elem_size) {
515         fprintf(stderr, "Array too big.\n");
516         ffmpeg_exit(1);
517     }
518     if (*size < new_size) {
519         uint8_t *tmp = av_realloc(array, new_size*elem_size);
520         if (!tmp) {
521             fprintf(stderr, "Could not alloc buffer.\n");
522             ffmpeg_exit(1);
523         }
524         memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
525         *size = new_size;
526         return tmp;
527     }
528     return array;
529 }
530
531 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
532 {
533     if(codec && codec->sample_fmts){
534         const enum AVSampleFormat *p= codec->sample_fmts;
535         for(; *p!=-1; p++){
536             if(*p == st->codec->sample_fmt)
537                 break;
538         }
539         if (*p == -1) {
540             av_log(NULL, AV_LOG_WARNING,
541                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
542                    av_get_sample_fmt_name(st->codec->sample_fmt),
543                    codec->name,
544                    av_get_sample_fmt_name(codec->sample_fmts[0]));
545             st->codec->sample_fmt = codec->sample_fmts[0];
546         }
547     }
548 }
549
550 /**
551  * Update the requested input sample format based on the output sample format.
552  * This is currently only used to request float output from decoders which
553  * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
554  * Ideally this will be removed in the future when decoders do not do format
555  * conversion and only output in their native format.
556  */
557 static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
558                               AVCodecContext *enc)
559 {
560     /* if sample formats match or a decoder sample format has already been
561        requested, just return */
562     if (enc->sample_fmt == dec->sample_fmt ||
563         dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
564         return;
565
566     /* if decoder supports more than one output format */
567     if (dec_codec && dec_codec->sample_fmts &&
568         dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
569         dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
570         enum AVSampleFormat *p;
571         int min_dec = -1, min_inc = -1;
572
573         /* find a matching sample format in the encoder */
574         for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
575             if (*p == enc->sample_fmt) {
576                 dec->request_sample_fmt = *p;
577                 return;
578             } else if (*p > enc->sample_fmt) {
579                 min_inc = FFMIN(min_inc, *p - enc->sample_fmt);
580             } else
581                 min_dec = FFMIN(min_dec, enc->sample_fmt - *p);
582         }
583
584         /* if none match, provide the one that matches quality closest */
585         dec->request_sample_fmt = min_inc > 0 ? enc->sample_fmt + min_inc :
586                                   enc->sample_fmt - min_dec;
587     }
588 }
589
590 static void choose_sample_rate(AVStream *st, AVCodec *codec)
591 {
592     if(codec && codec->supported_samplerates){
593         const int *p= codec->supported_samplerates;
594         int best=0;
595         int best_dist=INT_MAX;
596         for(; *p; p++){
597             int dist= abs(st->codec->sample_rate - *p);
598             if(dist < best_dist){
599                 best_dist= dist;
600                 best= *p;
601             }
602         }
603         if(best_dist){
604             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
605         }
606         st->codec->sample_rate= best;
607     }
608 }
609
610 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
611 {
612     if(codec && codec->pix_fmts){
613         const enum PixelFormat *p= codec->pix_fmts;
614         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
615             if(st->codec->codec_id==CODEC_ID_MJPEG){
616                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
617             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
618                 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};
619             }
620         }
621         for(; *p!=-1; p++){
622             if(*p == st->codec->pix_fmt)
623                 break;
624         }
625         if (*p == -1) {
626             if(st->codec->pix_fmt != PIX_FMT_NONE)
627                 av_log(NULL, AV_LOG_WARNING,
628                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
629                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
630                         codec->name,
631                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
632             st->codec->pix_fmt = codec->pix_fmts[0];
633         }
634     }
635 }
636
637 static AVOutputStream *new_output_stream(AVFormatContext *oc, int file_idx)
638 {
639     int idx = oc->nb_streams - 1;
640     AVOutputStream *ost;
641
642     output_streams_for_file[file_idx] =
643         grow_array(output_streams_for_file[file_idx],
644                    sizeof(*output_streams_for_file[file_idx]),
645                    &nb_output_streams_for_file[file_idx],
646                    oc->nb_streams);
647     ost = output_streams_for_file[file_idx][idx] =
648         av_mallocz(sizeof(AVOutputStream));
649     if (!ost) {
650         fprintf(stderr, "Could not alloc output stream\n");
651         ffmpeg_exit(1);
652     }
653     ost->file_index = file_idx;
654     ost->index = idx;
655
656     ost->sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
657     return ost;
658 }
659
660 static int read_ffserver_streams(AVFormatContext *s, const char *filename)
661 {
662     int i, err;
663     AVFormatContext *ic;
664     int nopts = 0;
665
666     err = av_open_input_file(&ic, filename, NULL, FFM_PACKET_SIZE, NULL);
667     if (err < 0)
668         return err;
669     /* copy stream format */
670     s->nb_streams = 0;
671     for(i=0;i<ic->nb_streams;i++) {
672         AVStream *st;
673         AVCodec *codec;
674
675         s->nb_streams++;
676
677         // FIXME: a more elegant solution is needed
678         st = av_mallocz(sizeof(AVStream));
679         memcpy(st, ic->streams[i], sizeof(AVStream));
680         st->codec = avcodec_alloc_context();
681         if (!st->codec) {
682             print_error(filename, AVERROR(ENOMEM));
683             ffmpeg_exit(1);
684         }
685         avcodec_copy_context(st->codec, ic->streams[i]->codec);
686         s->streams[i] = st;
687
688         codec = avcodec_find_encoder(st->codec->codec_id);
689         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
690             if (audio_stream_copy) {
691                 st->stream_copy = 1;
692             } else
693                 choose_sample_fmt(st, codec);
694         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
695             if (video_stream_copy) {
696                 st->stream_copy = 1;
697             } else
698                 choose_pixel_fmt(st, codec);
699         }
700
701         if(st->codec->flags & CODEC_FLAG_BITEXACT)
702             nopts = 1;
703
704         new_output_stream(s, nb_output_files);
705     }
706
707     if (!nopts)
708         s->timestamp = av_gettime();
709
710     av_close_input_file(ic);
711     return 0;
712 }
713
714 static double
715 get_sync_ipts(const AVOutputStream *ost)
716 {
717     const AVInputStream *ist = ost->sync_ist;
718     return (double)(ist->pts - start_time)/AV_TIME_BASE;
719 }
720
721 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
722     int ret;
723
724     while(bsfc){
725         AVPacket new_pkt= *pkt;
726         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
727                                           &new_pkt.data, &new_pkt.size,
728                                           pkt->data, pkt->size,
729                                           pkt->flags & AV_PKT_FLAG_KEY);
730         if(a>0){
731             av_free_packet(pkt);
732             new_pkt.destruct= av_destruct_packet;
733         } else if(a<0){
734             fprintf(stderr, "%s failed for stream %d, codec %s",
735                     bsfc->filter->name, pkt->stream_index,
736                     avctx->codec ? avctx->codec->name : "copy");
737             print_error("", a);
738             if (exit_on_error)
739                 ffmpeg_exit(1);
740         }
741         *pkt= new_pkt;
742
743         bsfc= bsfc->next;
744     }
745
746     ret= av_interleaved_write_frame(s, pkt);
747     if(ret < 0){
748         print_error("av_interleaved_write_frame()", ret);
749         ffmpeg_exit(1);
750     }
751 }
752
753 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
754
755 static void do_audio_out(AVFormatContext *s,
756                          AVOutputStream *ost,
757                          AVInputStream *ist,
758                          unsigned char *buf, int size)
759 {
760     uint8_t *buftmp;
761     int64_t audio_out_size, audio_buf_size;
762     int64_t allocated_for_size= size;
763
764     int size_out, frame_bytes, ret, resample_changed;
765     AVCodecContext *enc= ost->st->codec;
766     AVCodecContext *dec= ist->st->codec;
767     int osize= av_get_bits_per_sample_fmt(enc->sample_fmt)/8;
768     int isize= av_get_bits_per_sample_fmt(dec->sample_fmt)/8;
769     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
770
771 need_realloc:
772     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
773     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
774     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
775     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
776     audio_buf_size*= osize*enc->channels;
777
778     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
779     if(coded_bps > 8*osize)
780         audio_out_size= audio_out_size * coded_bps / (8*osize);
781     audio_out_size += FF_MIN_BUFFER_SIZE;
782
783     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
784         fprintf(stderr, "Buffer sizes too large\n");
785         ffmpeg_exit(1);
786     }
787
788     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
789     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
790     if (!audio_buf || !audio_out){
791         fprintf(stderr, "Out of memory in do_audio_out\n");
792         ffmpeg_exit(1);
793     }
794
795     if (enc->channels != dec->channels || enc->sample_rate != dec->sample_rate)
796         ost->audio_resample = 1;
797
798     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
799                        ost->resample_channels    != dec->channels   ||
800                        ost->resample_sample_rate != dec->sample_rate;
801
802     if ((ost->audio_resample && !ost->resample) || resample_changed) {
803         if (resample_changed) {
804             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",
805                    ist->file_index, ist->index,
806                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
807                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
808             ost->resample_sample_fmt  = dec->sample_fmt;
809             ost->resample_channels    = dec->channels;
810             ost->resample_sample_rate = dec->sample_rate;
811             if (ost->resample)
812                 audio_resample_close(ost->resample);
813         }
814         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
815         if (audio_sync_method <= 1 &&
816             ost->resample_sample_fmt  == enc->sample_fmt &&
817             ost->resample_channels    == enc->channels   &&
818             ost->resample_sample_rate == enc->sample_rate) {
819             ost->resample = NULL;
820             ost->audio_resample = 0;
821         } else if (ost->audio_resample) {
822             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
823                 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
824             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
825                                                    enc->sample_rate, dec->sample_rate,
826                                                    enc->sample_fmt,  dec->sample_fmt,
827                                                    16, 10, 0, 0.8);
828             if (!ost->resample) {
829                 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
830                         dec->channels, dec->sample_rate,
831                         enc->channels, enc->sample_rate);
832                 ffmpeg_exit(1);
833             }
834         }
835     }
836
837 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
838     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
839         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
840         if (ost->reformat_ctx)
841             av_audio_convert_free(ost->reformat_ctx);
842         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
843                                                    dec->sample_fmt, 1, NULL, 0);
844         if (!ost->reformat_ctx) {
845             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
846                 av_get_sample_fmt_name(dec->sample_fmt),
847                 av_get_sample_fmt_name(enc->sample_fmt));
848             ffmpeg_exit(1);
849         }
850         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
851     }
852
853     if(audio_sync_method){
854         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
855                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
856         double idelta= delta*dec->sample_rate / enc->sample_rate;
857         int byte_delta= ((int)idelta)*2*dec->channels;
858
859         //FIXME resample delay
860         if(fabs(delta) > 50){
861             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
862                 if(byte_delta < 0){
863                     byte_delta= FFMAX(byte_delta, -size);
864                     size += byte_delta;
865                     buf  -= byte_delta;
866                     if(verbose > 2)
867                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
868                     if(!size)
869                         return;
870                     ist->is_start=0;
871                 }else{
872                     static uint8_t *input_tmp= NULL;
873                     input_tmp= av_realloc(input_tmp, byte_delta + size);
874
875                     if(byte_delta > allocated_for_size - size){
876                         allocated_for_size= byte_delta + (int64_t)size;
877                         goto need_realloc;
878                     }
879                     ist->is_start=0;
880
881                     memset(input_tmp, 0, byte_delta);
882                     memcpy(input_tmp + byte_delta, buf, size);
883                     buf= input_tmp;
884                     size += byte_delta;
885                     if(verbose > 2)
886                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
887                 }
888             }else if(audio_sync_method>1){
889                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
890                 av_assert0(ost->audio_resample);
891                 if(verbose > 2)
892                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
893 //                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));
894                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
895             }
896         }
897     }else
898         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
899                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
900
901     if (ost->audio_resample) {
902         buftmp = audio_buf;
903         size_out = audio_resample(ost->resample,
904                                   (short *)buftmp, (short *)buf,
905                                   size / (dec->channels * isize));
906         size_out = size_out * enc->channels * osize;
907     } else {
908         buftmp = buf;
909         size_out = size;
910     }
911
912     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
913         const void *ibuf[6]= {buftmp};
914         void *obuf[6]= {audio_buf};
915         int istride[6]= {isize};
916         int ostride[6]= {osize};
917         int len= size_out/istride[0];
918         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
919             printf("av_audio_convert() failed\n");
920             if (exit_on_error)
921                 ffmpeg_exit(1);
922             return;
923         }
924         buftmp = audio_buf;
925         size_out = len*osize;
926     }
927
928     /* now encode as many frames as possible */
929     if (enc->frame_size > 1) {
930         /* output resampled raw samples */
931         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
932             fprintf(stderr, "av_fifo_realloc2() failed\n");
933             ffmpeg_exit(1);
934         }
935         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
936
937         frame_bytes = enc->frame_size * osize * enc->channels;
938
939         while (av_fifo_size(ost->fifo) >= frame_bytes) {
940             AVPacket pkt;
941             av_init_packet(&pkt);
942
943             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
944
945             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
946
947             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
948                                        (short *)audio_buf);
949             if (ret < 0) {
950                 fprintf(stderr, "Audio encoding failed\n");
951                 ffmpeg_exit(1);
952             }
953             audio_size += ret;
954             pkt.stream_index= ost->index;
955             pkt.data= audio_out;
956             pkt.size= ret;
957             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
958                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
959             pkt.flags |= AV_PKT_FLAG_KEY;
960             write_frame(s, &pkt, enc, ost->bitstream_filters);
961
962             ost->sync_opts += enc->frame_size;
963         }
964     } else {
965         AVPacket pkt;
966         av_init_packet(&pkt);
967
968         ost->sync_opts += size_out / (osize * enc->channels);
969
970         /* output a pcm frame */
971         /* determine the size of the coded buffer */
972         size_out /= osize;
973         if (coded_bps)
974             size_out = size_out*coded_bps/8;
975
976         if(size_out > audio_out_size){
977             fprintf(stderr, "Internal error, buffer size too small\n");
978             ffmpeg_exit(1);
979         }
980
981         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
982         ret = avcodec_encode_audio(enc, audio_out, size_out,
983                                    (short *)buftmp);
984         if (ret < 0) {
985             fprintf(stderr, "Audio encoding failed\n");
986             ffmpeg_exit(1);
987         }
988         audio_size += ret;
989         pkt.stream_index= ost->index;
990         pkt.data= audio_out;
991         pkt.size= ret;
992         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
993             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
994         pkt.flags |= AV_PKT_FLAG_KEY;
995         write_frame(s, &pkt, enc, ost->bitstream_filters);
996     }
997 }
998
999 static void pre_process_video_frame(AVInputStream *ist, AVPicture *picture, void **bufp)
1000 {
1001     AVCodecContext *dec;
1002     AVPicture *picture2;
1003     AVPicture picture_tmp;
1004     uint8_t *buf = 0;
1005
1006     dec = ist->st->codec;
1007
1008     /* deinterlace : must be done before any resize */
1009     if (do_deinterlace) {
1010         int size;
1011
1012         /* create temporary picture */
1013         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1014         buf = av_malloc(size);
1015         if (!buf)
1016             return;
1017
1018         picture2 = &picture_tmp;
1019         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1020
1021         if(avpicture_deinterlace(picture2, picture,
1022                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1023             /* if error, do not deinterlace */
1024             fprintf(stderr, "Deinterlacing failed\n");
1025             av_free(buf);
1026             buf = NULL;
1027             picture2 = picture;
1028         }
1029     } else {
1030         picture2 = picture;
1031     }
1032
1033     if (picture != picture2)
1034         *picture = *picture2;
1035     *bufp = buf;
1036 }
1037
1038 /* we begin to correct av delay at this threshold */
1039 #define AV_DELAY_MAX 0.100
1040
1041 static void do_subtitle_out(AVFormatContext *s,
1042                             AVOutputStream *ost,
1043                             AVInputStream *ist,
1044                             AVSubtitle *sub,
1045                             int64_t pts)
1046 {
1047     static uint8_t *subtitle_out = NULL;
1048     int subtitle_out_max_size = 1024 * 1024;
1049     int subtitle_out_size, nb, i;
1050     AVCodecContext *enc;
1051     AVPacket pkt;
1052
1053     if (pts == AV_NOPTS_VALUE) {
1054         fprintf(stderr, "Subtitle packets must have a pts\n");
1055         if (exit_on_error)
1056             ffmpeg_exit(1);
1057         return;
1058     }
1059
1060     enc = ost->st->codec;
1061
1062     if (!subtitle_out) {
1063         subtitle_out = av_malloc(subtitle_out_max_size);
1064     }
1065
1066     /* Note: DVB subtitle need one packet to draw them and one other
1067        packet to clear them */
1068     /* XXX: signal it in the codec context ? */
1069     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1070         nb = 2;
1071     else
1072         nb = 1;
1073
1074     for(i = 0; i < nb; i++) {
1075         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1076         // start_display_time is required to be 0
1077         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1078         sub->end_display_time -= sub->start_display_time;
1079         sub->start_display_time = 0;
1080         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1081                                                     subtitle_out_max_size, sub);
1082         if (subtitle_out_size < 0) {
1083             fprintf(stderr, "Subtitle encoding failed\n");
1084             ffmpeg_exit(1);
1085         }
1086
1087         av_init_packet(&pkt);
1088         pkt.stream_index = ost->index;
1089         pkt.data = subtitle_out;
1090         pkt.size = subtitle_out_size;
1091         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1092         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1093             /* XXX: the pts correction is handled here. Maybe handling
1094                it in the codec would be better */
1095             if (i == 0)
1096                 pkt.pts += 90 * sub->start_display_time;
1097             else
1098                 pkt.pts += 90 * sub->end_display_time;
1099         }
1100         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1101     }
1102 }
1103
1104 static int bit_buffer_size= 1024*256;
1105 static uint8_t *bit_buffer= NULL;
1106
1107 static void do_video_out(AVFormatContext *s,
1108                          AVOutputStream *ost,
1109                          AVInputStream *ist,
1110                          AVFrame *in_picture,
1111                          int *frame_size)
1112 {
1113     int nb_frames, i, ret, resample_changed;
1114     AVFrame *final_picture, *formatted_picture, *resampling_dst;
1115     AVCodecContext *enc, *dec;
1116     double sync_ipts;
1117
1118     enc = ost->st->codec;
1119     dec = ist->st->codec;
1120
1121     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1122
1123     /* by default, we output a single frame */
1124     nb_frames = 1;
1125
1126     *frame_size = 0;
1127
1128     if(video_sync_method){
1129         double vdelta = sync_ipts - ost->sync_opts;
1130         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1131         if (vdelta < -1.1)
1132             nb_frames = 0;
1133         else if (video_sync_method == 2 || (video_sync_method<0 && (s->oformat->flags & AVFMT_VARIABLE_FPS))){
1134             if(vdelta<=-0.6){
1135                 nb_frames=0;
1136             }else if(vdelta>0.6)
1137                 ost->sync_opts= lrintf(sync_ipts);
1138         }else if (vdelta > 1.1)
1139             nb_frames = lrintf(vdelta);
1140 //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);
1141         if (nb_frames == 0){
1142             ++nb_frames_drop;
1143             if (verbose>2)
1144                 fprintf(stderr, "*** drop!\n");
1145         }else if (nb_frames > 1) {
1146             nb_frames_dup += nb_frames - 1;
1147             if (verbose>2)
1148                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1149         }
1150     }else
1151         ost->sync_opts= lrintf(sync_ipts);
1152
1153     nb_frames= FFMIN(nb_frames, max_frames[AVMEDIA_TYPE_VIDEO] - ost->frame_number);
1154     if (nb_frames <= 0)
1155         return;
1156
1157     formatted_picture = in_picture;
1158     final_picture = formatted_picture;
1159     resampling_dst = &ost->pict_tmp;
1160
1161     resample_changed = ost->resample_width   != dec->width  ||
1162                        ost->resample_height  != dec->height ||
1163                        ost->resample_pix_fmt != dec->pix_fmt;
1164
1165     if (resample_changed) {
1166         av_log(NULL, AV_LOG_INFO,
1167                "Input stream #%d.%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1168                ist->file_index, ist->index,
1169                ost->resample_width, ost->resample_height, avcodec_get_pix_fmt_name(ost->resample_pix_fmt),
1170                dec->width         , dec->height         , avcodec_get_pix_fmt_name(dec->pix_fmt));
1171         if(!ost->video_resample)
1172             ffmpeg_exit(1);
1173     }
1174
1175 #if !CONFIG_AVFILTER
1176     if (ost->video_resample) {
1177         final_picture = &ost->pict_tmp;
1178         if (resample_changed) {
1179             /* initialize a new scaler context */
1180             sws_freeContext(ost->img_resample_ctx);
1181             ost->img_resample_ctx = sws_getContext(
1182                 ist->st->codec->width,
1183                 ist->st->codec->height,
1184                 ist->st->codec->pix_fmt,
1185                 ost->st->codec->width,
1186                 ost->st->codec->height,
1187                 ost->st->codec->pix_fmt,
1188                 ost->sws_flags, NULL, NULL, NULL);
1189             if (ost->img_resample_ctx == NULL) {
1190                 fprintf(stderr, "Cannot get resampling context\n");
1191                 ffmpeg_exit(1);
1192             }
1193         }
1194         sws_scale(ost->img_resample_ctx, formatted_picture->data, formatted_picture->linesize,
1195               0, ost->resample_height, resampling_dst->data, resampling_dst->linesize);
1196     }
1197 #endif
1198
1199     /* duplicates frame if needed */
1200     for(i=0;i<nb_frames;i++) {
1201         AVPacket pkt;
1202         av_init_packet(&pkt);
1203         pkt.stream_index= ost->index;
1204
1205         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1206             /* raw pictures are written as AVPicture structure to
1207                avoid any copies. We support temorarily the older
1208                method. */
1209             AVFrame* old_frame = enc->coded_frame;
1210             enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
1211             pkt.data= (uint8_t *)final_picture;
1212             pkt.size=  sizeof(AVPicture);
1213             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1214             pkt.flags |= AV_PKT_FLAG_KEY;
1215
1216             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1217             enc->coded_frame = old_frame;
1218         } else {
1219             AVFrame big_picture;
1220
1221             big_picture= *final_picture;
1222             /* better than nothing: use input picture interlaced
1223                settings */
1224             big_picture.interlaced_frame = in_picture->interlaced_frame;
1225             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1226                 if(top_field_first == -1)
1227                     big_picture.top_field_first = in_picture->top_field_first;
1228                 else
1229                     big_picture.top_field_first = top_field_first;
1230             }
1231
1232             /* handles sameq here. This is not correct because it may
1233                not be a global option */
1234             big_picture.quality = same_quality ? ist->st->quality : ost->st->quality;
1235             if(!me_threshold)
1236                 big_picture.pict_type = 0;
1237 //            big_picture.pts = AV_NOPTS_VALUE;
1238             big_picture.pts= ost->sync_opts;
1239 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1240 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1241             if (ost->forced_kf_index < ost->forced_kf_count &&
1242                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1243                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1244                 ost->forced_kf_index++;
1245             }
1246             ret = avcodec_encode_video(enc,
1247                                        bit_buffer, bit_buffer_size,
1248                                        &big_picture);
1249             if (ret < 0) {
1250                 fprintf(stderr, "Video encoding failed\n");
1251                 ffmpeg_exit(1);
1252             }
1253
1254             if(ret>0){
1255                 pkt.data= bit_buffer;
1256                 pkt.size= ret;
1257                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1258                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1259 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1260    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1261    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1262
1263                 if(enc->coded_frame->key_frame)
1264                     pkt.flags |= AV_PKT_FLAG_KEY;
1265                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1266                 *frame_size = ret;
1267                 video_size += ret;
1268                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1269                 //        enc->frame_number-1, ret, enc->pict_type);
1270                 /* if two pass, output log */
1271                 if (ost->logfile && enc->stats_out) {
1272                     fprintf(ost->logfile, "%s", enc->stats_out);
1273                 }
1274             }
1275         }
1276         ost->sync_opts++;
1277         ost->frame_number++;
1278     }
1279 }
1280
1281 static double psnr(double d){
1282     return -10.0*log(d)/log(10.0);
1283 }
1284
1285 static void do_video_stats(AVFormatContext *os, AVOutputStream *ost,
1286                            int frame_size)
1287 {
1288     AVCodecContext *enc;
1289     int frame_number;
1290     double ti1, bitrate, avg_bitrate;
1291
1292     /* this is executed just the first time do_video_stats is called */
1293     if (!vstats_file) {
1294         vstats_file = fopen(vstats_filename, "w");
1295         if (!vstats_file) {
1296             perror("fopen");
1297             ffmpeg_exit(1);
1298         }
1299     }
1300
1301     enc = ost->st->codec;
1302     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1303         frame_number = ost->frame_number;
1304         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1305         if (enc->flags&CODEC_FLAG_PSNR)
1306             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1307
1308         fprintf(vstats_file,"f_size= %6d ", frame_size);
1309         /* compute pts value */
1310         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1311         if (ti1 < 0.01)
1312             ti1 = 0.01;
1313
1314         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1315         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1316         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1317             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1318         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1319     }
1320 }
1321
1322 static void print_report(AVFormatContext **output_files,
1323                          AVOutputStream **ost_table, int nb_ostreams,
1324                          int is_last_report)
1325 {
1326     char buf[1024];
1327     AVOutputStream *ost;
1328     AVFormatContext *oc;
1329     int64_t total_size;
1330     AVCodecContext *enc;
1331     int frame_number, vid, i;
1332     double bitrate, ti1, pts;
1333     static int64_t last_time = -1;
1334     static int qp_histogram[52];
1335
1336     if (!is_last_report) {
1337         int64_t cur_time;
1338         /* display the report every 0.5 seconds */
1339         cur_time = av_gettime();
1340         if (last_time == -1) {
1341             last_time = cur_time;
1342             return;
1343         }
1344         if ((cur_time - last_time) < 500000)
1345             return;
1346         last_time = cur_time;
1347     }
1348
1349
1350     oc = output_files[0];
1351
1352     total_size = avio_size(oc->pb);
1353     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1354         total_size= avio_tell(oc->pb);
1355
1356     buf[0] = '\0';
1357     ti1 = 1e10;
1358     vid = 0;
1359     for(i=0;i<nb_ostreams;i++) {
1360         float q = -1;
1361         ost = ost_table[i];
1362         enc = ost->st->codec;
1363         if (!ost->st->stream_copy && enc->coded_frame)
1364             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1365         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1366             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1367         }
1368         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1369             float t = (av_gettime()-timer_start) / 1000000.0;
1370
1371             frame_number = ost->frame_number;
1372             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1373                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1374             if(is_last_report)
1375                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1376             if(qp_hist){
1377                 int j;
1378                 int qp = lrintf(q);
1379                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1380                     qp_histogram[qp]++;
1381                 for(j=0; j<32; j++)
1382                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1383             }
1384             if (enc->flags&CODEC_FLAG_PSNR){
1385                 int j;
1386                 double error, error_sum=0;
1387                 double scale, scale_sum=0;
1388                 char type[3]= {'Y','U','V'};
1389                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1390                 for(j=0; j<3; j++){
1391                     if(is_last_report){
1392                         error= enc->error[j];
1393                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1394                     }else{
1395                         error= enc->coded_frame->error[j];
1396                         scale= enc->width*enc->height*255.0*255.0;
1397                     }
1398                     if(j) scale/=4;
1399                     error_sum += error;
1400                     scale_sum += scale;
1401                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1402                 }
1403                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1404             }
1405             vid = 1;
1406         }
1407         /* compute min output value */
1408         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1409         if ((pts < ti1) && (pts > 0))
1410             ti1 = pts;
1411     }
1412     if (ti1 < 0.01)
1413         ti1 = 0.01;
1414
1415     if (verbose > 0 || is_last_report) {
1416         bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1417
1418         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1419             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1420             (double)total_size / 1024, ti1, bitrate);
1421
1422         if (nb_frames_dup || nb_frames_drop)
1423           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1424                   nb_frames_dup, nb_frames_drop);
1425
1426         if (verbose >= 0)
1427             fprintf(stderr, "%s    \r", buf);
1428
1429         fflush(stderr);
1430     }
1431
1432     if (is_last_report && verbose >= 0){
1433         int64_t raw= audio_size + video_size + extra_size;
1434         fprintf(stderr, "\n");
1435         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1436                 video_size/1024.0,
1437                 audio_size/1024.0,
1438                 extra_size/1024.0,
1439                 100.0*(total_size - raw)/raw
1440         );
1441     }
1442 }
1443
1444 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1445 {
1446     int fill_char = 0x00;
1447     if (sample_fmt == AV_SAMPLE_FMT_U8)
1448         fill_char = 0x80;
1449     memset(buf, fill_char, size);
1450 }
1451
1452 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1453 static int output_packet(AVInputStream *ist, int ist_index,
1454                          AVOutputStream **ost_table, int nb_ostreams,
1455                          const AVPacket *pkt)
1456 {
1457     AVFormatContext *os;
1458     AVOutputStream *ost;
1459     int ret, i;
1460     int got_output;
1461     AVFrame picture;
1462     void *buffer_to_free = NULL;
1463     static unsigned int samples_size= 0;
1464     AVSubtitle subtitle, *subtitle_to_free;
1465     int64_t pkt_pts = AV_NOPTS_VALUE;
1466 #if CONFIG_AVFILTER
1467     int frame_available;
1468 #endif
1469
1470     AVPacket avpkt;
1471     int bps = av_get_bits_per_sample_fmt(ist->st->codec->sample_fmt)>>3;
1472
1473     if(ist->next_pts == AV_NOPTS_VALUE)
1474         ist->next_pts= ist->pts;
1475
1476     if (pkt == NULL) {
1477         /* EOF handling */
1478         av_init_packet(&avpkt);
1479         avpkt.data = NULL;
1480         avpkt.size = 0;
1481         goto handle_eof;
1482     } else {
1483         avpkt = *pkt;
1484     }
1485
1486     if(pkt->dts != AV_NOPTS_VALUE)
1487         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1488     if(pkt->pts != AV_NOPTS_VALUE)
1489         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1490
1491     //while we have more to decode or while the decoder did output something on EOF
1492     while (avpkt.size > 0 || (!pkt && got_output)) {
1493         uint8_t *data_buf, *decoded_data_buf;
1494         int data_size, decoded_data_size;
1495     handle_eof:
1496         ist->pts= ist->next_pts;
1497
1498         if(avpkt.size && avpkt.size != pkt->size &&
1499            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1500             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1501             ist->showed_multi_packet_warning=1;
1502         }
1503
1504         /* decode the packet if needed */
1505         decoded_data_buf = NULL; /* fail safe */
1506         decoded_data_size= 0;
1507         data_buf  = avpkt.data;
1508         data_size = avpkt.size;
1509         subtitle_to_free = NULL;
1510         if (ist->decoding_needed) {
1511             switch(ist->st->codec->codec_type) {
1512             case AVMEDIA_TYPE_AUDIO:{
1513                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1514                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1515                     av_free(samples);
1516                     samples= av_malloc(samples_size);
1517                 }
1518                 decoded_data_size= samples_size;
1519                     /* XXX: could avoid copy if PCM 16 bits with same
1520                        endianness as CPU */
1521                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1522                                             &avpkt);
1523                 if (ret < 0)
1524                     goto fail_decode;
1525                 avpkt.data += ret;
1526                 avpkt.size -= ret;
1527                 data_size   = ret;
1528                 got_output  = decoded_data_size > 0;
1529                 /* Some bug in mpeg audio decoder gives */
1530                 /* decoded_data_size < 0, it seems they are overflows */
1531                 if (!got_output) {
1532                     /* no audio frame */
1533                     continue;
1534                 }
1535                 decoded_data_buf = (uint8_t *)samples;
1536                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1537                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1538                 break;}
1539             case AVMEDIA_TYPE_VIDEO:
1540                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1541                     /* XXX: allocate picture correctly */
1542                     avcodec_get_frame_defaults(&picture);
1543                     avpkt.pts = pkt_pts;
1544                     avpkt.dts = ist->pts;
1545                     pkt_pts = AV_NOPTS_VALUE;
1546
1547                     ret = avcodec_decode_video2(ist->st->codec,
1548                                                 &picture, &got_output, &avpkt);
1549                     ist->st->quality= picture.quality;
1550                     if (ret < 0)
1551                         goto fail_decode;
1552                     if (!got_output) {
1553                         /* no picture yet */
1554                         goto discard_packet;
1555                     }
1556                     ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, picture.pkt_pts, picture.pkt_dts);
1557                     if (ist->st->codec->time_base.num != 0) {
1558                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1559                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1560                                           ist->st->codec->time_base.num * ticks) /
1561                             ist->st->codec->time_base.den;
1562                     }
1563                     avpkt.size = 0;
1564                     buffer_to_free = NULL;
1565                     pre_process_video_frame(ist, (AVPicture *)&picture, &buffer_to_free);
1566                     break;
1567             case AVMEDIA_TYPE_SUBTITLE:
1568                 ret = avcodec_decode_subtitle2(ist->st->codec,
1569                                                &subtitle, &got_output, &avpkt);
1570                 if (ret < 0)
1571                     goto fail_decode;
1572                 if (!got_output) {
1573                     goto discard_packet;
1574                 }
1575                 subtitle_to_free = &subtitle;
1576                 avpkt.size = 0;
1577                 break;
1578             default:
1579                 goto fail_decode;
1580             }
1581         } else {
1582             switch(ist->st->codec->codec_type) {
1583             case AVMEDIA_TYPE_AUDIO:
1584                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1585                     ist->st->codec->sample_rate;
1586                 break;
1587             case AVMEDIA_TYPE_VIDEO:
1588                 if (ist->st->codec->time_base.num != 0) {
1589                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1590                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1591                                       ist->st->codec->time_base.num * ticks) /
1592                         ist->st->codec->time_base.den;
1593                 }
1594                 break;
1595             }
1596             ret = avpkt.size;
1597             avpkt.size = 0;
1598         }
1599
1600 #if CONFIG_AVFILTER
1601         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1602             for (i = 0; i < nb_ostreams; i++) {
1603                 ost = ost_table[i];
1604                 if (ost->input_video_filter && ost->source_index == ist_index) {
1605                     AVRational sar;
1606                     if (ist->st->sample_aspect_ratio.num)
1607                         sar = ist->st->sample_aspect_ratio;
1608                     else
1609                         sar = ist->st->codec->sample_aspect_ratio;
1610                     // add it to be filtered
1611                     av_vsrc_buffer_add_frame(ost->input_video_filter, &picture,
1612                                              ist->pts,
1613                                              sar);
1614                 }
1615             }
1616         }
1617 #endif
1618
1619         // preprocess audio (volume)
1620         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1621             if (audio_volume != 256) {
1622                 short *volp;
1623                 volp = samples;
1624                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1625                     int v = ((*volp) * audio_volume + 128) >> 8;
1626                     if (v < -32768) v = -32768;
1627                     if (v >  32767) v = 32767;
1628                     *volp++ = v;
1629                 }
1630             }
1631         }
1632
1633         /* frame rate emulation */
1634         if (rate_emu) {
1635             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1636             int64_t now = av_gettime() - ist->start;
1637             if (pts > now)
1638                 usleep(pts - now);
1639         }
1640         /* if output time reached then transcode raw format,
1641            encode packets and output them */
1642         if (start_time == 0 || ist->pts >= start_time)
1643             for(i=0;i<nb_ostreams;i++) {
1644                 int frame_size;
1645
1646                 ost = ost_table[i];
1647                 if (ost->source_index == ist_index) {
1648 #if CONFIG_AVFILTER
1649                 frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1650                     !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1651                 while (frame_available) {
1652                     AVRational ist_pts_tb;
1653                     if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter)
1654                         get_filtered_video_frame(ost->output_video_filter, &picture, &ost->picref, &ist_pts_tb);
1655                     if (ost->picref)
1656                         ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1657 #endif
1658                     os = output_files[ost->file_index];
1659
1660                     /* set the input output pts pairs */
1661                     //ost->sync_ipts = (double)(ist->pts + input_files_ts_offset[ist->file_index] - start_time)/ AV_TIME_BASE;
1662
1663                     if (ost->encoding_needed) {
1664                         av_assert0(ist->decoding_needed);
1665                         switch(ost->st->codec->codec_type) {
1666                         case AVMEDIA_TYPE_AUDIO:
1667                             do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1668                             break;
1669                         case AVMEDIA_TYPE_VIDEO:
1670 #if CONFIG_AVFILTER
1671                             if (ost->picref->video && !ost->frame_aspect_ratio)
1672                                 ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
1673 #endif
1674                             do_video_out(os, ost, ist, &picture, &frame_size);
1675                             if (vstats_filename && frame_size)
1676                                 do_video_stats(os, ost, frame_size);
1677                             break;
1678                         case AVMEDIA_TYPE_SUBTITLE:
1679                             do_subtitle_out(os, ost, ist, &subtitle,
1680                                             pkt->pts);
1681                             break;
1682                         default:
1683                             abort();
1684                         }
1685                     } else {
1686                         AVFrame avframe; //FIXME/XXX remove this
1687                         AVPacket opkt;
1688                         int64_t ost_tb_start_time= av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1689
1690                         av_init_packet(&opkt);
1691
1692                         if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1693 #if !CONFIG_AVFILTER
1694                             continue;
1695 #else
1696                             goto cont;
1697 #endif
1698
1699                         /* no reencoding needed : output the packet directly */
1700                         /* force the input stream PTS */
1701
1702                         avcodec_get_frame_defaults(&avframe);
1703                         ost->st->codec->coded_frame= &avframe;
1704                         avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1705
1706                         if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1707                             audio_size += data_size;
1708                         else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1709                             video_size += data_size;
1710                             ost->sync_opts++;
1711                         }
1712
1713                         opkt.stream_index= ost->index;
1714                         if(pkt->pts != AV_NOPTS_VALUE)
1715                             opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1716                         else
1717                             opkt.pts= AV_NOPTS_VALUE;
1718
1719                         if (pkt->dts == AV_NOPTS_VALUE)
1720                             opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1721                         else
1722                             opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1723                         opkt.dts -= ost_tb_start_time;
1724
1725                         opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1726                         opkt.flags= pkt->flags;
1727
1728                         //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1729                         if(   ost->st->codec->codec_id != CODEC_ID_H264
1730                            && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1731                            && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1732                            ) {
1733                             if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1734                                 opkt.destruct= av_destruct_packet;
1735                         } else {
1736                             opkt.data = data_buf;
1737                             opkt.size = data_size;
1738                         }
1739
1740                         write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1741                         ost->st->codec->frame_number++;
1742                         ost->frame_number++;
1743                         av_free_packet(&opkt);
1744                     }
1745 #if CONFIG_AVFILTER
1746                     cont:
1747                     frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1748                                        ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1749                     if (ost->picref)
1750                         avfilter_unref_buffer(ost->picref);
1751                 }
1752 #endif
1753                 }
1754             }
1755
1756         av_free(buffer_to_free);
1757         /* XXX: allocate the subtitles in the codec ? */
1758         if (subtitle_to_free) {
1759             avsubtitle_free(subtitle_to_free);
1760             subtitle_to_free = NULL;
1761         }
1762     }
1763  discard_packet:
1764     if (pkt == NULL) {
1765         /* EOF handling */
1766
1767         for(i=0;i<nb_ostreams;i++) {
1768             ost = ost_table[i];
1769             if (ost->source_index == ist_index) {
1770                 AVCodecContext *enc= ost->st->codec;
1771                 os = output_files[ost->file_index];
1772
1773                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1774                     continue;
1775                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1776                     continue;
1777
1778                 if (ost->encoding_needed) {
1779                     for(;;) {
1780                         AVPacket pkt;
1781                         int fifo_bytes;
1782                         av_init_packet(&pkt);
1783                         pkt.stream_index= ost->index;
1784
1785                         switch(ost->st->codec->codec_type) {
1786                         case AVMEDIA_TYPE_AUDIO:
1787                             fifo_bytes = av_fifo_size(ost->fifo);
1788                             ret = 0;
1789                             /* encode any samples remaining in fifo */
1790                             if (fifo_bytes > 0) {
1791                                 int osize = av_get_bits_per_sample_fmt(enc->sample_fmt) >> 3;
1792                                 int fs_tmp = enc->frame_size;
1793
1794                                 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1795                                 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1796                                     enc->frame_size = fifo_bytes / (osize * enc->channels);
1797                                 } else { /* pad */
1798                                     int frame_bytes = enc->frame_size*osize*enc->channels;
1799                                     if (allocated_audio_buf_size < frame_bytes)
1800                                         ffmpeg_exit(1);
1801                                     generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1802                                 }
1803
1804                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1805                                 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1806                                                           ost->st->time_base.num, enc->sample_rate);
1807                                 enc->frame_size = fs_tmp;
1808                             }
1809                             if(ret <= 0) {
1810                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1811                             }
1812                             if (ret < 0) {
1813                                 fprintf(stderr, "Audio encoding failed\n");
1814                                 ffmpeg_exit(1);
1815                             }
1816                             audio_size += ret;
1817                             pkt.flags |= AV_PKT_FLAG_KEY;
1818                             break;
1819                         case AVMEDIA_TYPE_VIDEO:
1820                             ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1821                             if (ret < 0) {
1822                                 fprintf(stderr, "Video encoding failed\n");
1823                                 ffmpeg_exit(1);
1824                             }
1825                             video_size += ret;
1826                             if(enc->coded_frame && enc->coded_frame->key_frame)
1827                                 pkt.flags |= AV_PKT_FLAG_KEY;
1828                             if (ost->logfile && enc->stats_out) {
1829                                 fprintf(ost->logfile, "%s", enc->stats_out);
1830                             }
1831                             break;
1832                         default:
1833                             ret=-1;
1834                         }
1835
1836                         if(ret<=0)
1837                             break;
1838                         pkt.data= bit_buffer;
1839                         pkt.size= ret;
1840                         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1841                             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1842                         write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1843                     }
1844                 }
1845             }
1846         }
1847     }
1848
1849     return 0;
1850  fail_decode:
1851     return -1;
1852 }
1853
1854 static void print_sdp(AVFormatContext **avc, int n)
1855 {
1856     char sdp[2048];
1857
1858     av_sdp_create(avc, n, sdp, sizeof(sdp));
1859     printf("SDP:\n%s\n", sdp);
1860     fflush(stdout);
1861 }
1862
1863 static int copy_chapters(int infile, int outfile)
1864 {
1865     AVFormatContext *is = input_files[infile];
1866     AVFormatContext *os = output_files[outfile];
1867     int i;
1868
1869     for (i = 0; i < is->nb_chapters; i++) {
1870         AVChapter *in_ch = is->chapters[i], *out_ch;
1871         int64_t ts_off   = av_rescale_q(start_time - input_files_ts_offset[infile],
1872                                       AV_TIME_BASE_Q, in_ch->time_base);
1873         int64_t rt       = (recording_time == INT64_MAX) ? INT64_MAX :
1874                            av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
1875
1876
1877         if (in_ch->end < ts_off)
1878             continue;
1879         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
1880             break;
1881
1882         out_ch = av_mallocz(sizeof(AVChapter));
1883         if (!out_ch)
1884             return AVERROR(ENOMEM);
1885
1886         out_ch->id        = in_ch->id;
1887         out_ch->time_base = in_ch->time_base;
1888         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
1889         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
1890
1891         if (metadata_chapters_autocopy)
1892             av_metadata_copy(&out_ch->metadata, in_ch->metadata, 0);
1893
1894         os->nb_chapters++;
1895         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
1896         if (!os->chapters)
1897             return AVERROR(ENOMEM);
1898         os->chapters[os->nb_chapters - 1] = out_ch;
1899     }
1900     return 0;
1901 }
1902
1903 static void parse_forced_key_frames(char *kf, AVOutputStream *ost,
1904                                     AVCodecContext *avctx)
1905 {
1906     char *p;
1907     int n = 1, i;
1908     int64_t t;
1909
1910     for (p = kf; *p; p++)
1911         if (*p == ',')
1912             n++;
1913     ost->forced_kf_count = n;
1914     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1915     if (!ost->forced_kf_pts) {
1916         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1917         ffmpeg_exit(1);
1918     }
1919     for (i = 0; i < n; i++) {
1920         p = i ? strchr(p, ',') + 1 : kf;
1921         t = parse_time_or_die("force_key_frames", p, 1);
1922         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1923     }
1924 }
1925
1926 /*
1927  * The following code is the main loop of the file converter
1928  */
1929 static int transcode(AVFormatContext **output_files,
1930                      int nb_output_files,
1931                      AVFormatContext **input_files,
1932                      int nb_input_files,
1933                      AVStreamMap *stream_maps, int nb_stream_maps)
1934 {
1935     int ret = 0, i, j, k, n, nb_istreams = 0, nb_ostreams = 0;
1936     AVFormatContext *is, *os;
1937     AVCodecContext *codec, *icodec;
1938     AVOutputStream *ost, **ost_table = NULL;
1939     AVInputStream *ist, **ist_table = NULL;
1940     AVInputFile *file_table;
1941     char error[1024];
1942     int want_sdp = 1;
1943     uint8_t no_packet[MAX_FILES]={0};
1944     int no_packet_count=0;
1945
1946     file_table= av_mallocz(nb_input_files * sizeof(AVInputFile));
1947     if (!file_table)
1948         goto fail;
1949
1950     /* input stream init */
1951     j = 0;
1952     for(i=0;i<nb_input_files;i++) {
1953         is = input_files[i];
1954         file_table[i].ist_index = j;
1955         file_table[i].nb_streams = is->nb_streams;
1956         j += is->nb_streams;
1957     }
1958     nb_istreams = j;
1959
1960     ist_table = av_mallocz(nb_istreams * sizeof(AVInputStream *));
1961     if (!ist_table)
1962         goto fail;
1963
1964     for(i=0;i<nb_istreams;i++) {
1965         ist = av_mallocz(sizeof(AVInputStream));
1966         if (!ist)
1967             goto fail;
1968         ist_table[i] = ist;
1969     }
1970     j = 0;
1971     for(i=0;i<nb_input_files;i++) {
1972         is = input_files[i];
1973         for(k=0;k<is->nb_streams;k++) {
1974             ist = ist_table[j++];
1975             ist->st = is->streams[k];
1976             ist->file_index = i;
1977             ist->index = k;
1978             ist->discard = 1; /* the stream is discarded by default
1979                                  (changed later) */
1980
1981             if (rate_emu) {
1982                 ist->start = av_gettime();
1983             }
1984         }
1985     }
1986
1987     /* output stream init */
1988     nb_ostreams = 0;
1989     for(i=0;i<nb_output_files;i++) {
1990         os = output_files[i];
1991         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1992             av_dump_format(output_files[i], i, output_files[i]->filename, 1);
1993             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
1994             ret = AVERROR(EINVAL);
1995             goto fail;
1996         }
1997         nb_ostreams += os->nb_streams;
1998     }
1999     if (nb_stream_maps > 0 && nb_stream_maps != nb_ostreams) {
2000         fprintf(stderr, "Number of stream maps must match number of output streams\n");
2001         ret = AVERROR(EINVAL);
2002         goto fail;
2003     }
2004
2005     /* Sanity check the mapping args -- do the input files & streams exist? */
2006     for(i=0;i<nb_stream_maps;i++) {
2007         int fi = stream_maps[i].file_index;
2008         int si = stream_maps[i].stream_index;
2009
2010         if (fi < 0 || fi > nb_input_files - 1 ||
2011             si < 0 || si > file_table[fi].nb_streams - 1) {
2012             fprintf(stderr,"Could not find input stream #%d.%d\n", fi, si);
2013             ret = AVERROR(EINVAL);
2014             goto fail;
2015         }
2016         fi = stream_maps[i].sync_file_index;
2017         si = stream_maps[i].sync_stream_index;
2018         if (fi < 0 || fi > nb_input_files - 1 ||
2019             si < 0 || si > file_table[fi].nb_streams - 1) {
2020             fprintf(stderr,"Could not find sync stream #%d.%d\n", fi, si);
2021             ret = AVERROR(EINVAL);
2022             goto fail;
2023         }
2024     }
2025
2026     ost_table = av_mallocz(sizeof(AVOutputStream *) * nb_ostreams);
2027     if (!ost_table)
2028         goto fail;
2029     n = 0;
2030     for(k=0;k<nb_output_files;k++) {
2031         os = output_files[k];
2032         for(i=0;i<os->nb_streams;i++,n++) {
2033             int found;
2034             ost = ost_table[n] = output_streams_for_file[k][i];
2035             ost->st = os->streams[i];
2036             if (nb_stream_maps > 0) {
2037                 ost->source_index = file_table[stream_maps[n].file_index].ist_index +
2038                     stream_maps[n].stream_index;
2039
2040                 /* Sanity check that the stream types match */
2041                 if (ist_table[ost->source_index]->st->codec->codec_type != ost->st->codec->codec_type) {
2042                     int i= ost->file_index;
2043                     av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2044                     fprintf(stderr, "Codec type mismatch for mapping #%d.%d -> #%d.%d\n",
2045                         stream_maps[n].file_index, stream_maps[n].stream_index,
2046                         ost->file_index, ost->index);
2047                     ffmpeg_exit(1);
2048                 }
2049
2050             } else {
2051                 int best_nb_frames=-1;
2052                 /* get corresponding input stream index : we select the first one with the right type */
2053                 found = 0;
2054                 for(j=0;j<nb_istreams;j++) {
2055                     int skip=0;
2056                     ist = ist_table[j];
2057                     if(opt_programid){
2058                         int pi,si;
2059                         AVFormatContext *f= input_files[ ist->file_index ];
2060                         skip=1;
2061                         for(pi=0; pi<f->nb_programs; pi++){
2062                             AVProgram *p= f->programs[pi];
2063                             if(p->id == opt_programid)
2064                                 for(si=0; si<p->nb_stream_indexes; si++){
2065                                     if(f->streams[ p->stream_index[si] ] == ist->st)
2066                                         skip=0;
2067                                 }
2068                         }
2069                     }
2070                     if (ist->discard && ist->st->discard != AVDISCARD_ALL && !skip &&
2071                         ist->st->codec->codec_type == ost->st->codec->codec_type) {
2072                         if(best_nb_frames < ist->st->codec_info_nb_frames){
2073                             best_nb_frames= ist->st->codec_info_nb_frames;
2074                             ost->source_index = j;
2075                             found = 1;
2076                         }
2077                     }
2078                 }
2079
2080                 if (!found) {
2081                     if(! opt_programid) {
2082                         /* try again and reuse existing stream */
2083                         for(j=0;j<nb_istreams;j++) {
2084                             ist = ist_table[j];
2085                             if (   ist->st->codec->codec_type == ost->st->codec->codec_type
2086                                 && ist->st->discard != AVDISCARD_ALL) {
2087                                 ost->source_index = j;
2088                                 found = 1;
2089                             }
2090                         }
2091                     }
2092                     if (!found) {
2093                         int i= ost->file_index;
2094                         av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2095                         fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",
2096                                 ost->file_index, ost->index);
2097                         ffmpeg_exit(1);
2098                     }
2099                 }
2100             }
2101             ist = ist_table[ost->source_index];
2102             ist->discard = 0;
2103             ost->sync_ist = (nb_stream_maps > 0) ?
2104                 ist_table[file_table[stream_maps[n].sync_file_index].ist_index +
2105                          stream_maps[n].sync_stream_index] : ist;
2106         }
2107     }
2108
2109     /* for each output stream, we compute the right encoding parameters */
2110     for(i=0;i<nb_ostreams;i++) {
2111         ost = ost_table[i];
2112         os = output_files[ost->file_index];
2113         ist = ist_table[ost->source_index];
2114
2115         codec = ost->st->codec;
2116         icodec = ist->st->codec;
2117
2118         if (metadata_streams_autocopy)
2119             av_metadata_copy(&ost->st->metadata, ist->st->metadata,
2120                              AV_METADATA_DONT_OVERWRITE);
2121
2122         ost->st->disposition = ist->st->disposition;
2123         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2124         codec->chroma_sample_location = icodec->chroma_sample_location;
2125
2126         if (ost->st->stream_copy) {
2127             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2128
2129             if (extra_size > INT_MAX)
2130                 goto fail;
2131
2132             /* if stream_copy is selected, no need to decode or encode */
2133             codec->codec_id = icodec->codec_id;
2134             codec->codec_type = icodec->codec_type;
2135
2136             if(!codec->codec_tag){
2137                 if(   !os->oformat->codec_tag
2138                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2139                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2140                     codec->codec_tag = icodec->codec_tag;
2141             }
2142
2143             codec->bit_rate = icodec->bit_rate;
2144             codec->rc_max_rate    = icodec->rc_max_rate;
2145             codec->rc_buffer_size = icodec->rc_buffer_size;
2146             codec->extradata= av_mallocz(extra_size);
2147             if (!codec->extradata)
2148                 goto fail;
2149             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2150             codec->extradata_size= icodec->extradata_size;
2151             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){
2152                 codec->time_base = icodec->time_base;
2153                 codec->time_base.num *= icodec->ticks_per_frame;
2154                 av_reduce(&codec->time_base.num, &codec->time_base.den,
2155                           codec->time_base.num, codec->time_base.den, INT_MAX);
2156             }else
2157                 codec->time_base = ist->st->time_base;
2158             switch(codec->codec_type) {
2159             case AVMEDIA_TYPE_AUDIO:
2160                 if(audio_volume != 256) {
2161                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2162                     ffmpeg_exit(1);
2163                 }
2164                 codec->channel_layout = icodec->channel_layout;
2165                 codec->sample_rate = icodec->sample_rate;
2166                 codec->channels = icodec->channels;
2167                 codec->frame_size = icodec->frame_size;
2168                 codec->audio_service_type = icodec->audio_service_type;
2169                 codec->block_align= icodec->block_align;
2170                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2171                     codec->block_align= 0;
2172                 if(codec->codec_id == CODEC_ID_AC3)
2173                     codec->block_align= 0;
2174                 break;
2175             case AVMEDIA_TYPE_VIDEO:
2176                 codec->pix_fmt = icodec->pix_fmt;
2177                 codec->width = icodec->width;
2178                 codec->height = icodec->height;
2179                 codec->has_b_frames = icodec->has_b_frames;
2180                 if (!codec->sample_aspect_ratio.num) {
2181                     codec->sample_aspect_ratio =
2182                     ost->st->sample_aspect_ratio =
2183                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2184                         ist->st->codec->sample_aspect_ratio.num ?
2185                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2186                 }
2187                 break;
2188             case AVMEDIA_TYPE_SUBTITLE:
2189                 codec->width = icodec->width;
2190                 codec->height = icodec->height;
2191                 break;
2192             case AVMEDIA_TYPE_DATA:
2193                 break;
2194             default:
2195                 abort();
2196             }
2197         } else {
2198             switch(codec->codec_type) {
2199             case AVMEDIA_TYPE_AUDIO:
2200                 ost->fifo= av_fifo_alloc(1024);
2201                 if(!ost->fifo)
2202                     goto fail;
2203                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2204                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2205                 icodec->request_channels = codec->channels;
2206                 ist->decoding_needed = 1;
2207                 ost->encoding_needed = 1;
2208                 ost->resample_sample_fmt  = icodec->sample_fmt;
2209                 ost->resample_sample_rate = icodec->sample_rate;
2210                 ost->resample_channels    = icodec->channels;
2211                 break;
2212             case AVMEDIA_TYPE_VIDEO:
2213                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2214                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2215                     ffmpeg_exit(1);
2216                 }
2217                 ost->video_resample = codec->width   != icodec->width  ||
2218                                       codec->height  != icodec->height ||
2219                                       codec->pix_fmt != icodec->pix_fmt;
2220                 if (ost->video_resample) {
2221 #if !CONFIG_AVFILTER
2222                     avcodec_get_frame_defaults(&ost->pict_tmp);
2223                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2224                                          codec->width, codec->height)) {
2225                         fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
2226                         ffmpeg_exit(1);
2227                     }
2228                     ost->img_resample_ctx = sws_getContext(
2229                         icodec->width,
2230                         icodec->height,
2231                             icodec->pix_fmt,
2232                             codec->width,
2233                             codec->height,
2234                             codec->pix_fmt,
2235                             ost->sws_flags, NULL, NULL, NULL);
2236                     if (ost->img_resample_ctx == NULL) {
2237                         fprintf(stderr, "Cannot get resampling context\n");
2238                         ffmpeg_exit(1);
2239                     }
2240 #endif
2241                     codec->bits_per_raw_sample= 0;
2242                 }
2243                 ost->resample_height = icodec->height;
2244                 ost->resample_width  = icodec->width;
2245                 ost->resample_pix_fmt= icodec->pix_fmt;
2246                 ost->encoding_needed = 1;
2247                 ist->decoding_needed = 1;
2248
2249 #if CONFIG_AVFILTER
2250                 if (configure_video_filters(ist, ost)) {
2251                     fprintf(stderr, "Error opening filters!\n");
2252                     exit(1);
2253                 }
2254 #endif
2255                 break;
2256             case AVMEDIA_TYPE_SUBTITLE:
2257                 ost->encoding_needed = 1;
2258                 ist->decoding_needed = 1;
2259                 break;
2260             default:
2261                 abort();
2262                 break;
2263             }
2264             /* two pass mode */
2265             if (ost->encoding_needed &&
2266                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2267                 char logfilename[1024];
2268                 FILE *f;
2269
2270                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2271                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2272                          i);
2273                 if (codec->flags & CODEC_FLAG_PASS1) {
2274                     f = fopen(logfilename, "wb");
2275                     if (!f) {
2276                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2277                         ffmpeg_exit(1);
2278                     }
2279                     ost->logfile = f;
2280                 } else {
2281                     char  *logbuffer;
2282                     size_t logbuffer_size;
2283                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2284                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2285                         ffmpeg_exit(1);
2286                     }
2287                     codec->stats_in = logbuffer;
2288                 }
2289             }
2290         }
2291         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2292             int size= codec->width * codec->height;
2293             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2294         }
2295     }
2296
2297     if (!bit_buffer)
2298         bit_buffer = av_malloc(bit_buffer_size);
2299     if (!bit_buffer) {
2300         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2301                 bit_buffer_size);
2302         ret = AVERROR(ENOMEM);
2303         goto fail;
2304     }
2305
2306     /* open each encoder */
2307     for(i=0;i<nb_ostreams;i++) {
2308         ost = ost_table[i];
2309         if (ost->encoding_needed) {
2310             AVCodec *codec = i < nb_output_codecs ? output_codecs[i] : NULL;
2311             AVCodecContext *dec = ist_table[ost->source_index]->st->codec;
2312             if (!codec)
2313                 codec = avcodec_find_encoder(ost->st->codec->codec_id);
2314             if (!codec) {
2315                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2316                          ost->st->codec->codec_id, ost->file_index, ost->index);
2317                 ret = AVERROR(EINVAL);
2318                 goto dump_format;
2319             }
2320             if (dec->subtitle_header) {
2321                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2322                 if (!ost->st->codec->subtitle_header) {
2323                     ret = AVERROR(ENOMEM);
2324                     goto dump_format;
2325                 }
2326                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2327                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2328             }
2329             if (avcodec_open(ost->st->codec, codec) < 0) {
2330                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2331                         ost->file_index, ost->index);
2332                 ret = AVERROR(EINVAL);
2333                 goto dump_format;
2334             }
2335             extra_size += ost->st->codec->extradata_size;
2336         }
2337     }
2338
2339     /* open each decoder */
2340     for(i=0;i<nb_istreams;i++) {
2341         ist = ist_table[i];
2342         if (ist->decoding_needed) {
2343             AVCodec *codec = i < nb_input_codecs ? input_codecs[i] : NULL;
2344             if (!codec)
2345                 codec = avcodec_find_decoder(ist->st->codec->codec_id);
2346             if (!codec) {
2347                 snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
2348                         ist->st->codec->codec_id, ist->file_index, ist->index);
2349                 ret = AVERROR(EINVAL);
2350                 goto dump_format;
2351             }
2352
2353             /* update requested sample format for the decoder based on the
2354                corresponding encoder sample format */
2355             for (j = 0; j < nb_ostreams; j++) {
2356                 ost = ost_table[j];
2357                 if (ost->source_index == i) {
2358                     update_sample_fmt(ist->st->codec, codec, ost->st->codec);
2359                     break;
2360                 }
2361             }
2362
2363             if (avcodec_open(ist->st->codec, codec) < 0) {
2364                 snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
2365                         ist->file_index, ist->index);
2366                 ret = AVERROR(EINVAL);
2367                 goto dump_format;
2368             }
2369             //if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2370             //    ist->st->codec->flags |= CODEC_FLAG_REPEAT_FIELD;
2371         }
2372     }
2373
2374     /* init pts */
2375     for(i=0;i<nb_istreams;i++) {
2376         AVStream *st;
2377         ist = ist_table[i];
2378         st= ist->st;
2379         ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
2380         ist->next_pts = AV_NOPTS_VALUE;
2381         init_pts_correction(&ist->pts_ctx);
2382         ist->is_start = 1;
2383     }
2384
2385     /* set meta data information from input file if required */
2386     for (i=0;i<nb_meta_data_maps;i++) {
2387         AVFormatContext *files[2];
2388         AVMetadata      **meta[2];
2389         int j;
2390
2391 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
2392         if ((index) < 0 || (index) >= (nb_elems)) {\
2393             snprintf(error, sizeof(error), "Invalid %s index %d while processing metadata maps\n",\
2394                      (desc), (index));\
2395             ret = AVERROR(EINVAL);\
2396             goto dump_format;\
2397         }
2398
2399         int out_file_index = meta_data_maps[i][0].file;
2400         int in_file_index = meta_data_maps[i][1].file;
2401         if (in_file_index < 0 || out_file_index < 0)
2402             continue;
2403         METADATA_CHECK_INDEX(out_file_index, nb_output_files, "output file")
2404         METADATA_CHECK_INDEX(in_file_index, nb_input_files, "input file")
2405
2406         files[0] = output_files[out_file_index];
2407         files[1] = input_files[in_file_index];
2408
2409         for (j = 0; j < 2; j++) {
2410             AVMetaDataMap *map = &meta_data_maps[i][j];
2411
2412             switch (map->type) {
2413             case 'g':
2414                 meta[j] = &files[j]->metadata;
2415                 break;
2416             case 's':
2417                 METADATA_CHECK_INDEX(map->index, files[j]->nb_streams, "stream")
2418                 meta[j] = &files[j]->streams[map->index]->metadata;
2419                 break;
2420             case 'c':
2421                 METADATA_CHECK_INDEX(map->index, files[j]->nb_chapters, "chapter")
2422                 meta[j] = &files[j]->chapters[map->index]->metadata;
2423                 break;
2424             case 'p':
2425                 METADATA_CHECK_INDEX(map->index, files[j]->nb_programs, "program")
2426                 meta[j] = &files[j]->programs[map->index]->metadata;
2427                 break;
2428             }
2429         }
2430
2431         av_metadata_copy(meta[0], *meta[1], AV_METADATA_DONT_OVERWRITE);
2432     }
2433
2434     /* copy global metadata by default */
2435     if (metadata_global_autocopy) {
2436
2437         for (i = 0; i < nb_output_files; i++)
2438             av_metadata_copy(&output_files[i]->metadata, input_files[0]->metadata,
2439                              AV_METADATA_DONT_OVERWRITE);
2440     }
2441
2442     /* copy chapters according to chapter maps */
2443     for (i = 0; i < nb_chapter_maps; i++) {
2444         int infile  = chapter_maps[i].in_file;
2445         int outfile = chapter_maps[i].out_file;
2446
2447         if (infile < 0 || outfile < 0)
2448             continue;
2449         if (infile >= nb_input_files) {
2450             snprintf(error, sizeof(error), "Invalid input file index %d in chapter mapping.\n", infile);
2451             ret = AVERROR(EINVAL);
2452             goto dump_format;
2453         }
2454         if (outfile >= nb_output_files) {
2455             snprintf(error, sizeof(error), "Invalid output file index %d in chapter mapping.\n",outfile);
2456             ret = AVERROR(EINVAL);
2457             goto dump_format;
2458         }
2459         copy_chapters(infile, outfile);
2460     }
2461
2462     /* copy chapters from the first input file that has them*/
2463     if (!nb_chapter_maps)
2464         for (i = 0; i < nb_input_files; i++) {
2465             if (!input_files[i]->nb_chapters)
2466                 continue;
2467
2468             for (j = 0; j < nb_output_files; j++)
2469                 if ((ret = copy_chapters(i, j)) < 0)
2470                     goto dump_format;
2471             break;
2472         }
2473
2474     /* open files and write file headers */
2475     for(i=0;i<nb_output_files;i++) {
2476         os = output_files[i];
2477         if (av_write_header(os) < 0) {
2478             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2479             ret = AVERROR(EINVAL);
2480             goto dump_format;
2481         }
2482         if (strcmp(output_files[i]->oformat->name, "rtp")) {
2483             want_sdp = 0;
2484         }
2485     }
2486
2487  dump_format:
2488     /* dump the file output parameters - cannot be done before in case
2489        of stream copy */
2490     for(i=0;i<nb_output_files;i++) {
2491         av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2492     }
2493
2494     /* dump the stream mapping */
2495     if (verbose >= 0) {
2496         fprintf(stderr, "Stream mapping:\n");
2497         for(i=0;i<nb_ostreams;i++) {
2498             ost = ost_table[i];
2499             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2500                     ist_table[ost->source_index]->file_index,
2501                     ist_table[ost->source_index]->index,
2502                     ost->file_index,
2503                     ost->index);
2504             if (ost->sync_ist != ist_table[ost->source_index])
2505                 fprintf(stderr, " [sync #%d.%d]",
2506                         ost->sync_ist->file_index,
2507                         ost->sync_ist->index);
2508             fprintf(stderr, "\n");
2509         }
2510     }
2511
2512     if (ret) {
2513         fprintf(stderr, "%s\n", error);
2514         goto fail;
2515     }
2516
2517     if (want_sdp) {
2518         print_sdp(output_files, nb_output_files);
2519     }
2520
2521     if (verbose >= 0)
2522         fprintf(stderr, "Press ctrl-c to stop encoding\n");
2523     term_init();
2524
2525     timer_start = av_gettime();
2526
2527     for(; received_sigterm == 0;) {
2528         int file_index, ist_index;
2529         AVPacket pkt;
2530         double ipts_min;
2531         double opts_min;
2532
2533     redo:
2534         ipts_min= 1e100;
2535         opts_min= 1e100;
2536
2537         /* select the stream that we must read now by looking at the
2538            smallest output pts */
2539         file_index = -1;
2540         for(i=0;i<nb_ostreams;i++) {
2541             double ipts, opts;
2542             ost = ost_table[i];
2543             os = output_files[ost->file_index];
2544             ist = ist_table[ost->source_index];
2545             if(ist->is_past_recording_time || no_packet[ist->file_index])
2546                 continue;
2547                 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2548             ipts = (double)ist->pts;
2549             if (!file_table[ist->file_index].eof_reached){
2550                 if(ipts < ipts_min) {
2551                     ipts_min = ipts;
2552                     if(input_sync ) file_index = ist->file_index;
2553                 }
2554                 if(opts < opts_min) {
2555                     opts_min = opts;
2556                     if(!input_sync) file_index = ist->file_index;
2557                 }
2558             }
2559             if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
2560                 file_index= -1;
2561                 break;
2562             }
2563         }
2564         /* if none, if is finished */
2565         if (file_index < 0) {
2566             if(no_packet_count){
2567                 no_packet_count=0;
2568                 memset(no_packet, 0, sizeof(no_packet));
2569                 usleep(10000);
2570                 continue;
2571             }
2572             break;
2573         }
2574
2575         /* finish if limit size exhausted */
2576         if (limit_filesize != 0 && limit_filesize <= avio_tell(output_files[0]->pb))
2577             break;
2578
2579         /* read a frame from it and output it in the fifo */
2580         is = input_files[file_index];
2581         ret= av_read_frame(is, &pkt);
2582         if(ret == AVERROR(EAGAIN)){
2583             no_packet[file_index]=1;
2584             no_packet_count++;
2585             continue;
2586         }
2587         if (ret < 0) {
2588             file_table[file_index].eof_reached = 1;
2589             if (opt_shortest)
2590                 break;
2591             else
2592                 continue;
2593         }
2594
2595         no_packet_count=0;
2596         memset(no_packet, 0, sizeof(no_packet));
2597
2598         if (do_pkt_dump) {
2599             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2600                              is->streams[pkt.stream_index]);
2601         }
2602         /* the following test is needed in case new streams appear
2603            dynamically in stream : we ignore them */
2604         if (pkt.stream_index >= file_table[file_index].nb_streams)
2605             goto discard_packet;
2606         ist_index = file_table[file_index].ist_index + pkt.stream_index;
2607         ist = ist_table[ist_index];
2608         if (ist->discard)
2609             goto discard_packet;
2610
2611         if (pkt.dts != AV_NOPTS_VALUE)
2612             pkt.dts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2613         if (pkt.pts != AV_NOPTS_VALUE)
2614             pkt.pts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2615
2616         if (pkt.stream_index < nb_input_files_ts_scale[file_index]
2617             && input_files_ts_scale[file_index][pkt.stream_index]){
2618             if(pkt.pts != AV_NOPTS_VALUE)
2619                 pkt.pts *= input_files_ts_scale[file_index][pkt.stream_index];
2620             if(pkt.dts != AV_NOPTS_VALUE)
2621                 pkt.dts *= input_files_ts_scale[file_index][pkt.stream_index];
2622         }
2623
2624 //        fprintf(stderr, "next:%"PRId64" dts:%"PRId64" off:%"PRId64" %d\n", ist->next_pts, pkt.dts, input_files_ts_offset[ist->file_index], ist->st->codec->codec_type);
2625         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2626             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2627             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2628             int64_t delta= pkt_dts - ist->next_pts;
2629             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2630                 input_files_ts_offset[ist->file_index]-= delta;
2631                 if (verbose > 2)
2632                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n", delta, input_files_ts_offset[ist->file_index]);
2633                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2634                 if(pkt.pts != AV_NOPTS_VALUE)
2635                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2636             }
2637         }
2638
2639         /* finish if recording time exhausted */
2640         if (recording_time != INT64_MAX &&
2641             av_compare_ts(pkt.pts, ist->st->time_base, recording_time + start_time, (AVRational){1, 1000000}) >= 0) {
2642             ist->is_past_recording_time = 1;
2643             goto discard_packet;
2644         }
2645
2646         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->index, pkt.size);
2647         if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
2648
2649             if (verbose >= 0)
2650                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2651                         ist->file_index, ist->index);
2652             if (exit_on_error)
2653                 ffmpeg_exit(1);
2654             av_free_packet(&pkt);
2655             goto redo;
2656         }
2657
2658     discard_packet:
2659         av_free_packet(&pkt);
2660
2661         /* dump report by using the output first video and audio streams */
2662         print_report(output_files, ost_table, nb_ostreams, 0);
2663     }
2664
2665     /* at the end of stream, we must flush the decoder buffers */
2666     for(i=0;i<nb_istreams;i++) {
2667         ist = ist_table[i];
2668         if (ist->decoding_needed) {
2669             output_packet(ist, i, ost_table, nb_ostreams, NULL);
2670         }
2671     }
2672
2673     term_exit();
2674
2675     /* write the trailer if needed and close file */
2676     for(i=0;i<nb_output_files;i++) {
2677         os = output_files[i];
2678         av_write_trailer(os);
2679     }
2680
2681     /* dump report by using the first video and audio streams */
2682     print_report(output_files, ost_table, nb_ostreams, 1);
2683
2684     /* close each encoder */
2685     for(i=0;i<nb_ostreams;i++) {
2686         ost = ost_table[i];
2687         if (ost->encoding_needed) {
2688             av_freep(&ost->st->codec->stats_in);
2689             avcodec_close(ost->st->codec);
2690         }
2691 #if CONFIG_AVFILTER
2692         avfilter_graph_free(&ost->graph);
2693 #endif
2694     }
2695
2696     /* close each decoder */
2697     for(i=0;i<nb_istreams;i++) {
2698         ist = ist_table[i];
2699         if (ist->decoding_needed) {
2700             avcodec_close(ist->st->codec);
2701         }
2702     }
2703
2704     /* finished ! */
2705     ret = 0;
2706
2707  fail:
2708     av_freep(&bit_buffer);
2709     av_free(file_table);
2710
2711     if (ist_table) {
2712         for(i=0;i<nb_istreams;i++) {
2713             ist = ist_table[i];
2714             av_free(ist);
2715         }
2716         av_free(ist_table);
2717     }
2718     if (ost_table) {
2719         for(i=0;i<nb_ostreams;i++) {
2720             ost = ost_table[i];
2721             if (ost) {
2722                 if (ost->st->stream_copy)
2723                     av_freep(&ost->st->codec->extradata);
2724                 if (ost->logfile) {
2725                     fclose(ost->logfile);
2726                     ost->logfile = NULL;
2727                 }
2728                 av_fifo_free(ost->fifo); /* works even if fifo is not
2729                                              initialized but set to zero */
2730                 av_freep(&ost->st->codec->subtitle_header);
2731                 av_free(ost->pict_tmp.data[0]);
2732                 av_free(ost->forced_kf_pts);
2733                 if (ost->video_resample)
2734                     sws_freeContext(ost->img_resample_ctx);
2735                 if (ost->resample)
2736                     audio_resample_close(ost->resample);
2737                 if (ost->reformat_ctx)
2738                     av_audio_convert_free(ost->reformat_ctx);
2739                 av_free(ost);
2740             }
2741         }
2742         av_free(ost_table);
2743     }
2744     return ret;
2745 }
2746
2747 static void opt_format(const char *arg)
2748 {
2749     last_asked_format = arg;
2750 }
2751
2752 static void opt_video_rc_override_string(const char *arg)
2753 {
2754     video_rc_override_string = arg;
2755 }
2756
2757 static int opt_me_threshold(const char *opt, const char *arg)
2758 {
2759     me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2760     return 0;
2761 }
2762
2763 static int opt_verbose(const char *opt, const char *arg)
2764 {
2765     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2766     return 0;
2767 }
2768
2769 static int opt_frame_rate(const char *opt, const char *arg)
2770 {
2771     if (av_parse_video_rate(&frame_rate, arg) < 0) {
2772         fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2773         ffmpeg_exit(1);
2774     }
2775     return 0;
2776 }
2777
2778 static int opt_bitrate(const char *opt, const char *arg)
2779 {
2780     int codec_type = opt[0]=='a' ? AVMEDIA_TYPE_AUDIO : AVMEDIA_TYPE_VIDEO;
2781
2782     opt_default(opt, arg);
2783
2784     if (av_get_int(avcodec_opts[codec_type], "b", NULL) < 1000)
2785         fprintf(stderr, "WARNING: The bitrate parameter is set too low. It takes bits/s as argument, not kbits/s\n");
2786
2787     return 0;
2788 }
2789
2790 static int opt_frame_crop(const char *opt, const char *arg)
2791 {
2792     fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
2793     return AVERROR(EINVAL);
2794 }
2795
2796 static void opt_frame_size(const char *arg)
2797 {
2798     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2799         fprintf(stderr, "Incorrect frame size\n");
2800         ffmpeg_exit(1);
2801     }
2802 }
2803
2804 static int opt_pad(const char *opt, const char *arg) {
2805     fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2806     return -1;
2807 }
2808
2809 static void opt_frame_pix_fmt(const char *arg)
2810 {
2811     if (strcmp(arg, "list")) {
2812         frame_pix_fmt = av_get_pix_fmt(arg);
2813         if (frame_pix_fmt == PIX_FMT_NONE) {
2814             fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2815             ffmpeg_exit(1);
2816         }
2817     } else {
2818         show_pix_fmts();
2819         ffmpeg_exit(0);
2820     }
2821 }
2822
2823 static void opt_frame_aspect_ratio(const char *arg)
2824 {
2825     int x = 0, y = 0;
2826     double ar = 0;
2827     const char *p;
2828     char *end;
2829
2830     p = strchr(arg, ':');
2831     if (p) {
2832         x = strtol(arg, &end, 10);
2833         if (end == p)
2834             y = strtol(end+1, &end, 10);
2835         if (x > 0 && y > 0)
2836             ar = (double)x / (double)y;
2837     } else
2838         ar = strtod(arg, NULL);
2839
2840     if (!ar) {
2841         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2842         ffmpeg_exit(1);
2843     }
2844     frame_aspect_ratio = ar;
2845 }
2846
2847 static int opt_metadata(const char *opt, const char *arg)
2848 {
2849     char *mid= strchr(arg, '=');
2850
2851     if(!mid){
2852         fprintf(stderr, "Missing =\n");
2853         ffmpeg_exit(1);
2854     }
2855     *mid++= 0;
2856
2857     av_metadata_set2(&metadata, arg, mid, 0);
2858
2859     return 0;
2860 }
2861
2862 static int opt_qscale(const char *opt, const char *arg)
2863 {
2864     video_qscale = parse_number_or_die(opt, arg, OPT_FLOAT, 0, 255);
2865     if (video_qscale == 0) {
2866         fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2867         return AVERROR(EINVAL);
2868     }
2869     return 0;
2870 }
2871
2872 static int opt_top_field_first(const char *opt, const char *arg)
2873 {
2874     top_field_first = parse_number_or_die(opt, arg, OPT_INT, 0, 1);
2875     return 0;
2876 }
2877
2878 static int opt_thread_count(const char *opt, const char *arg)
2879 {
2880     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2881 #if !HAVE_THREADS
2882     if (verbose >= 0)
2883         fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2884 #endif
2885     return 0;
2886 }
2887
2888 static void opt_audio_sample_fmt(const char *arg)
2889 {
2890     if (strcmp(arg, "list")) {
2891         audio_sample_fmt = av_get_sample_fmt(arg);
2892         if (audio_sample_fmt == AV_SAMPLE_FMT_NONE) {
2893             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg);
2894             ffmpeg_exit(1);
2895         }
2896     } else {
2897         int i;
2898         char fmt_str[128];
2899         for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
2900             printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
2901         ffmpeg_exit(0);
2902     }
2903 }
2904
2905 static int opt_audio_rate(const char *opt, const char *arg)
2906 {
2907     audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2908     return 0;
2909 }
2910
2911 static int opt_audio_channels(const char *opt, const char *arg)
2912 {
2913     audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2914     return 0;
2915 }
2916
2917 static int opt_video_channel(const char *opt, const char *arg)
2918 {
2919     video_channel = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2920     return 0;
2921 }
2922
2923 static void opt_video_standard(const char *arg)
2924 {
2925     video_standard = av_strdup(arg);
2926 }
2927
2928 static void opt_codec(int *pstream_copy, char **pcodec_name,
2929                       int codec_type, const char *arg)
2930 {
2931     av_freep(pcodec_name);
2932     if (!strcmp(arg, "copy")) {
2933         *pstream_copy = 1;
2934     } else {
2935         *pcodec_name = av_strdup(arg);
2936     }
2937 }
2938
2939 static void opt_audio_codec(const char *arg)
2940 {
2941     opt_codec(&audio_stream_copy, &audio_codec_name, AVMEDIA_TYPE_AUDIO, arg);
2942 }
2943
2944 static void opt_video_codec(const char *arg)
2945 {
2946     opt_codec(&video_stream_copy, &video_codec_name, AVMEDIA_TYPE_VIDEO, arg);
2947 }
2948
2949 static void opt_subtitle_codec(const char *arg)
2950 {
2951     opt_codec(&subtitle_stream_copy, &subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, arg);
2952 }
2953
2954 static void opt_data_codec(const char *arg)
2955 {
2956     opt_codec(&data_stream_copy, &data_codec_name, AVMEDIA_TYPE_DATA, arg);
2957 }
2958
2959 static int opt_codec_tag(const char *opt, const char *arg)
2960 {
2961     char *tail;
2962     uint32_t *codec_tag;
2963
2964     codec_tag = !strcmp(opt, "atag") ? &audio_codec_tag :
2965                 !strcmp(opt, "vtag") ? &video_codec_tag :
2966                 !strcmp(opt, "stag") ? &subtitle_codec_tag : NULL;
2967     if (!codec_tag)
2968         return -1;
2969
2970     *codec_tag = strtol(arg, &tail, 0);
2971     if (!tail || *tail)
2972         *codec_tag = AV_RL32(arg);
2973
2974     return 0;
2975 }
2976
2977 static void opt_map(const char *arg)
2978 {
2979     AVStreamMap *m;
2980     char *p;
2981
2982     stream_maps = grow_array(stream_maps, sizeof(*stream_maps), &nb_stream_maps, nb_stream_maps + 1);
2983     m = &stream_maps[nb_stream_maps-1];
2984
2985     m->file_index = strtol(arg, &p, 0);
2986     if (*p)
2987         p++;
2988
2989     m->stream_index = strtol(p, &p, 0);
2990     if (*p) {
2991         p++;
2992         m->sync_file_index = strtol(p, &p, 0);
2993         if (*p)
2994             p++;
2995         m->sync_stream_index = strtol(p, &p, 0);
2996     } else {
2997         m->sync_file_index = m->file_index;
2998         m->sync_stream_index = m->stream_index;
2999     }
3000 }
3001
3002 static void parse_meta_type(char *arg, char *type, int *index, char **endptr)
3003 {
3004     *endptr = arg;
3005     if (*arg == ',') {
3006         *type = *(++arg);
3007         switch (*arg) {
3008         case 'g':
3009             break;
3010         case 's':
3011         case 'c':
3012         case 'p':
3013             *index = strtol(++arg, endptr, 0);
3014             break;
3015         default:
3016             fprintf(stderr, "Invalid metadata type %c.\n", *arg);
3017             ffmpeg_exit(1);
3018         }
3019     } else
3020         *type = 'g';
3021 }
3022
3023 static void opt_map_metadata(const char *arg)
3024 {
3025     AVMetaDataMap *m, *m1;
3026     char *p;
3027
3028     meta_data_maps = grow_array(meta_data_maps, sizeof(*meta_data_maps),
3029                                 &nb_meta_data_maps, nb_meta_data_maps + 1);
3030
3031     m = &meta_data_maps[nb_meta_data_maps - 1][0];
3032     m->file = strtol(arg, &p, 0);
3033     parse_meta_type(p, &m->type, &m->index, &p);
3034     if (*p)
3035         p++;
3036
3037     m1 = &meta_data_maps[nb_meta_data_maps - 1][1];
3038     m1->file = strtol(p, &p, 0);
3039     parse_meta_type(p, &m1->type, &m1->index, &p);
3040
3041     if (m->type == 'g' || m1->type == 'g')
3042         metadata_global_autocopy = 0;
3043     if (m->type == 's' || m1->type == 's')
3044         metadata_streams_autocopy = 0;
3045     if (m->type == 'c' || m1->type == 'c')
3046         metadata_chapters_autocopy = 0;
3047 }
3048
3049 static void opt_map_meta_data(const char *arg)
3050 {
3051     fprintf(stderr, "-map_meta_data is deprecated and will be removed soon. "
3052                     "Use -map_metadata instead.\n");
3053     opt_map_metadata(arg);
3054 }
3055
3056 static void opt_map_chapters(const char *arg)
3057 {
3058     AVChapterMap *c;
3059     char *p;
3060
3061     chapter_maps = grow_array(chapter_maps, sizeof(*chapter_maps), &nb_chapter_maps,
3062                               nb_chapter_maps + 1);
3063     c = &chapter_maps[nb_chapter_maps - 1];
3064     c->out_file = strtol(arg, &p, 0);
3065     if (*p)
3066         p++;
3067
3068     c->in_file = strtol(p, &p, 0);
3069 }
3070
3071 static void opt_input_ts_scale(const char *arg)
3072 {
3073     unsigned int stream;
3074     double scale;
3075     char *p;
3076
3077     stream = strtol(arg, &p, 0);
3078     if (*p)
3079         p++;
3080     scale= strtod(p, &p);
3081
3082     if(stream >= MAX_STREAMS)
3083         ffmpeg_exit(1);
3084
3085     input_files_ts_scale[nb_input_files] = grow_array(input_files_ts_scale[nb_input_files], sizeof(*input_files_ts_scale[nb_input_files]), &nb_input_files_ts_scale[nb_input_files], stream + 1);
3086     input_files_ts_scale[nb_input_files][stream]= scale;
3087 }
3088
3089 static int opt_recording_time(const char *opt, const char *arg)
3090 {
3091     recording_time = parse_time_or_die(opt, arg, 1);
3092     return 0;
3093 }
3094
3095 static int opt_start_time(const char *opt, const char *arg)
3096 {
3097     start_time = parse_time_or_die(opt, arg, 1);
3098     return 0;
3099 }
3100
3101 static int opt_recording_timestamp(const char *opt, const char *arg)
3102 {
3103     recording_timestamp = parse_time_or_die(opt, arg, 0) / 1000000;
3104     return 0;
3105 }
3106
3107 static int opt_input_ts_offset(const char *opt, const char *arg)
3108 {
3109     input_ts_offset = parse_time_or_die(opt, arg, 1);
3110     return 0;
3111 }
3112
3113 static enum CodecID find_codec_or_die(const char *name, int type, int encoder, int strict)
3114 {
3115     const char *codec_string = encoder ? "encoder" : "decoder";
3116     AVCodec *codec;
3117
3118     if(!name)
3119         return CODEC_ID_NONE;
3120     codec = encoder ?
3121         avcodec_find_encoder_by_name(name) :
3122         avcodec_find_decoder_by_name(name);
3123     if(!codec) {
3124         fprintf(stderr, "Unknown %s '%s'\n", codec_string, name);
3125         ffmpeg_exit(1);
3126     }
3127     if(codec->type != type) {
3128         fprintf(stderr, "Invalid %s type '%s'\n", codec_string, name);
3129         ffmpeg_exit(1);
3130     }
3131     if(codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
3132        strict > FF_COMPLIANCE_EXPERIMENTAL) {
3133         fprintf(stderr, "%s '%s' is experimental and might produce bad "
3134                 "results.\nAdd '-strict experimental' if you want to use it.\n",
3135                 codec_string, codec->name);
3136         codec = encoder ?
3137             avcodec_find_encoder(codec->id) :
3138             avcodec_find_decoder(codec->id);
3139         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
3140             fprintf(stderr, "Or use the non experimental %s '%s'.\n",
3141                     codec_string, codec->name);
3142         ffmpeg_exit(1);
3143     }
3144     return codec->id;
3145 }
3146
3147 static void opt_input_file(const char *filename)
3148 {
3149     AVFormatContext *ic;
3150     AVFormatParameters params, *ap = &params;
3151     AVInputFormat *file_iformat = NULL;
3152     int err, i, ret, rfps, rfps_base;
3153     int64_t timestamp;
3154
3155     if (last_asked_format) {
3156         if (!(file_iformat = av_find_input_format(last_asked_format))) {
3157             fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
3158             ffmpeg_exit(1);
3159         }
3160         last_asked_format = NULL;
3161     }
3162
3163     if (!strcmp(filename, "-"))
3164         filename = "pipe:";
3165
3166     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3167                     !strcmp(filename, "/dev/stdin");
3168
3169     /* get default parameters from command line */
3170     ic = avformat_alloc_context();
3171     if (!ic) {
3172         print_error(filename, AVERROR(ENOMEM));
3173         ffmpeg_exit(1);
3174     }
3175
3176     memset(ap, 0, sizeof(*ap));
3177     ap->prealloced_context = 1;
3178     ap->sample_rate = audio_sample_rate;
3179     ap->channels = audio_channels;
3180     ap->time_base.den = frame_rate.num;
3181     ap->time_base.num = frame_rate.den;
3182     ap->width = frame_width;
3183     ap->height = frame_height;
3184     ap->pix_fmt = frame_pix_fmt;
3185    // ap->sample_fmt = audio_sample_fmt; //FIXME:not implemented in libavformat
3186     ap->channel = video_channel;
3187     ap->standard = video_standard;
3188
3189     set_context_opts(ic, avformat_opts, AV_OPT_FLAG_DECODING_PARAM, NULL);
3190
3191     ic->video_codec_id   =
3192         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0,
3193                           avcodec_opts[AVMEDIA_TYPE_VIDEO   ]->strict_std_compliance);
3194     ic->audio_codec_id   =
3195         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0,
3196                           avcodec_opts[AVMEDIA_TYPE_AUDIO   ]->strict_std_compliance);
3197     ic->subtitle_codec_id=
3198         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0,
3199                           avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->strict_std_compliance);
3200     ic->flags |= AVFMT_FLAG_NONBLOCK;
3201
3202     /* open the input file with generic libav function */
3203     err = av_open_input_file(&ic, filename, file_iformat, 0, ap);
3204     if (err < 0) {
3205         print_error(filename, err);
3206         ffmpeg_exit(1);
3207     }
3208     if(opt_programid) {
3209         int i, j;
3210         int found=0;
3211         for(i=0; i<ic->nb_streams; i++){
3212             ic->streams[i]->discard= AVDISCARD_ALL;
3213         }
3214         for(i=0; i<ic->nb_programs; i++){
3215             AVProgram *p= ic->programs[i];
3216             if(p->id != opt_programid){
3217                 p->discard = AVDISCARD_ALL;
3218             }else{
3219                 found=1;
3220                 for(j=0; j<p->nb_stream_indexes; j++){
3221                     ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
3222                 }
3223             }
3224         }
3225         if(!found){
3226             fprintf(stderr, "Specified program id not found\n");
3227             ffmpeg_exit(1);
3228         }
3229         opt_programid=0;
3230     }
3231
3232     ic->loop_input = loop_input;
3233
3234     /* Set AVCodecContext options so they will be seen by av_find_stream_info() */
3235     for (i = 0; i < ic->nb_streams; i++) {
3236         AVCodecContext *dec = ic->streams[i]->codec;
3237         switch (dec->codec_type) {
3238         case AVMEDIA_TYPE_AUDIO:
3239             set_context_opts(dec, avcodec_opts[AVMEDIA_TYPE_AUDIO],
3240                              AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM,
3241                              NULL);
3242             break;
3243         case AVMEDIA_TYPE_VIDEO:
3244             set_context_opts(dec, avcodec_opts[AVMEDIA_TYPE_VIDEO],
3245                              AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM,
3246                              NULL);
3247             break;
3248         }
3249     }
3250
3251     /* If not enough info to get the stream parameters, we decode the
3252        first frames to get it. (used in mpeg case for example) */
3253     ret = av_find_stream_info(ic);
3254     if (ret < 0 && verbose >= 0) {
3255         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3256         av_close_input_file(ic);
3257         ffmpeg_exit(1);
3258     }
3259
3260     timestamp = start_time;
3261     /* add the stream start time */
3262     if (ic->start_time != AV_NOPTS_VALUE)
3263         timestamp += ic->start_time;
3264
3265     /* if seeking requested, we execute it */
3266     if (start_time != 0) {
3267         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3268         if (ret < 0) {
3269             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3270                     filename, (double)timestamp / AV_TIME_BASE);
3271         }
3272         /* reset seek info */
3273         start_time = 0;
3274     }
3275
3276     /* update the current parameters so that they match the one of the input stream */
3277     for(i=0;i<ic->nb_streams;i++) {
3278         AVStream *st = ic->streams[i];
3279         AVCodecContext *dec = st->codec;
3280         dec->thread_count = thread_count;
3281         input_codecs = grow_array(input_codecs, sizeof(*input_codecs), &nb_input_codecs, nb_input_codecs + 1);
3282         switch (dec->codec_type) {
3283         case AVMEDIA_TYPE_AUDIO:
3284             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(audio_codec_name);
3285             set_context_opts(dec, avcodec_opts[AVMEDIA_TYPE_AUDIO], AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM, input_codecs[nb_input_codecs-1]);
3286             channel_layout    = dec->channel_layout;
3287             audio_channels    = dec->channels;
3288             audio_sample_rate = dec->sample_rate;
3289             audio_sample_fmt  = dec->sample_fmt;
3290             if(audio_disable)
3291                 st->discard= AVDISCARD_ALL;
3292             /* Note that av_find_stream_info can add more streams, and we
3293              * currently have no chance of setting up lowres decoding
3294              * early enough for them. */
3295             if (dec->lowres)
3296                 audio_sample_rate >>= dec->lowres;
3297             break;
3298         case AVMEDIA_TYPE_VIDEO:
3299             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(video_codec_name);
3300             set_context_opts(dec, avcodec_opts[AVMEDIA_TYPE_VIDEO], AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM, input_codecs[nb_input_codecs-1]);
3301             frame_height = dec->height;
3302             frame_width  = dec->width;
3303             frame_pix_fmt = dec->pix_fmt;
3304             rfps      = ic->streams[i]->r_frame_rate.num;
3305             rfps_base = ic->streams[i]->r_frame_rate.den;
3306             if (dec->lowres) {
3307                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3308                 frame_height >>= dec->lowres;
3309                 frame_width  >>= dec->lowres;
3310                 dec->height = frame_height;
3311                 dec->width  = frame_width;
3312             }
3313             if(me_threshold)
3314                 dec->debug |= FF_DEBUG_MV;
3315
3316             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3317
3318                 if (verbose >= 0)
3319                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3320                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3321
3322                     (float)rfps / rfps_base, rfps, rfps_base);
3323             }
3324             /* update the current frame rate to match the stream frame rate */
3325             frame_rate.num = rfps;
3326             frame_rate.den = rfps_base;
3327
3328             if(video_disable)
3329                 st->discard= AVDISCARD_ALL;
3330             else if(video_discard)
3331                 st->discard= video_discard;
3332             break;
3333         case AVMEDIA_TYPE_DATA:
3334             break;
3335         case AVMEDIA_TYPE_SUBTITLE:
3336             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(subtitle_codec_name);
3337             if(subtitle_disable)
3338                 st->discard = AVDISCARD_ALL;
3339             break;
3340         case AVMEDIA_TYPE_ATTACHMENT:
3341         case AVMEDIA_TYPE_UNKNOWN:
3342             break;
3343         default:
3344             abort();
3345         }
3346     }
3347
3348     input_files[nb_input_files] = ic;
3349     input_files_ts_offset[nb_input_files] = input_ts_offset - (copy_ts ? 0 : timestamp);
3350     /* dump the file content */
3351     if (verbose >= 0)
3352         av_dump_format(ic, nb_input_files, filename, 0);
3353
3354     nb_input_files++;
3355
3356     video_channel = 0;
3357
3358     av_freep(&video_codec_name);
3359     av_freep(&audio_codec_name);
3360     av_freep(&subtitle_codec_name);
3361     uninit_opts();
3362     init_opts();
3363 }
3364
3365 static void check_inputs(int *has_video_ptr,
3366                          int *has_audio_ptr,
3367                          int *has_subtitle_ptr,
3368                          int *has_data_ptr)
3369 {
3370     int has_video, has_audio, has_subtitle, has_data, i, j;
3371     AVFormatContext *ic;
3372
3373     has_video = 0;
3374     has_audio = 0;
3375     has_subtitle = 0;
3376     has_data = 0;
3377
3378     for(j=0;j<nb_input_files;j++) {
3379         ic = input_files[j];
3380         for(i=0;i<ic->nb_streams;i++) {
3381             AVCodecContext *enc = ic->streams[i]->codec;
3382             switch(enc->codec_type) {
3383             case AVMEDIA_TYPE_AUDIO:
3384                 has_audio = 1;
3385                 break;
3386             case AVMEDIA_TYPE_VIDEO:
3387                 has_video = 1;
3388                 break;
3389             case AVMEDIA_TYPE_SUBTITLE:
3390                 has_subtitle = 1;
3391                 break;
3392             case AVMEDIA_TYPE_DATA:
3393             case AVMEDIA_TYPE_ATTACHMENT:
3394             case AVMEDIA_TYPE_UNKNOWN:
3395                 has_data = 1;
3396                 break;
3397             default:
3398                 abort();
3399             }
3400         }
3401     }
3402     *has_video_ptr = has_video;
3403     *has_audio_ptr = has_audio;
3404     *has_subtitle_ptr = has_subtitle;
3405     *has_data_ptr = has_data;
3406 }
3407
3408 static void new_video_stream(AVFormatContext *oc, int file_idx)
3409 {
3410     AVStream *st;
3411     AVOutputStream *ost;
3412     AVCodecContext *video_enc;
3413     enum CodecID codec_id = CODEC_ID_NONE;
3414     AVCodec *codec= NULL;
3415
3416     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3417     if (!st) {
3418         fprintf(stderr, "Could not alloc stream\n");
3419         ffmpeg_exit(1);
3420     }
3421     ost = new_output_stream(oc, file_idx);
3422
3423     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3424     if(!video_stream_copy){
3425         if (video_codec_name) {
3426             codec_id = find_codec_or_die(video_codec_name, AVMEDIA_TYPE_VIDEO, 1,
3427                                          avcodec_opts[AVMEDIA_TYPE_VIDEO]->strict_std_compliance);
3428             codec = avcodec_find_encoder_by_name(video_codec_name);
3429             output_codecs[nb_output_codecs-1] = codec;
3430         } else {
3431             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_VIDEO);
3432             codec = avcodec_find_encoder(codec_id);
3433         }
3434
3435         ost->frame_aspect_ratio = frame_aspect_ratio;
3436         frame_aspect_ratio = 0;
3437 #if CONFIG_AVFILTER
3438         ost->avfilter= vfilters;
3439         vfilters = NULL;
3440 #endif
3441     }
3442
3443     avcodec_get_context_defaults3(st->codec, codec);
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         avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3457     }
3458
3459     if (video_stream_copy) {
3460         st->stream_copy = 1;
3461         video_enc->codec_type = AVMEDIA_TYPE_VIDEO;
3462         video_enc->sample_aspect_ratio =
3463         st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3464     } else {
3465         const char *p;
3466         int i;
3467         AVRational fps= frame_rate.num ? frame_rate : (AVRational){25,1};
3468
3469         video_enc->codec_id = codec_id;
3470         set_context_opts(video_enc, avcodec_opts[AVMEDIA_TYPE_VIDEO], AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3471
3472         if (codec && codec->supported_framerates && !force_fps)
3473             fps = codec->supported_framerates[av_find_nearest_q_idx(fps, codec->supported_framerates)];
3474         video_enc->time_base.den = fps.num;
3475         video_enc->time_base.num = fps.den;
3476
3477         video_enc->width = frame_width;
3478         video_enc->height = frame_height;
3479         video_enc->pix_fmt = frame_pix_fmt;
3480         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3481
3482         choose_pixel_fmt(st, codec);
3483
3484         if (intra_only)
3485             video_enc->gop_size = 0;
3486         if (video_qscale || same_quality) {
3487             video_enc->flags |= CODEC_FLAG_QSCALE;
3488             video_enc->global_quality=
3489                 st->quality = FF_QP2LAMBDA * video_qscale;
3490         }
3491
3492         if(intra_matrix)
3493             video_enc->intra_matrix = intra_matrix;
3494         if(inter_matrix)
3495             video_enc->inter_matrix = inter_matrix;
3496
3497         p= video_rc_override_string;
3498         for(i=0; p; i++){
3499             int start, end, q;
3500             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3501             if(e!=3){
3502                 fprintf(stderr, "error parsing rc_override\n");
3503                 ffmpeg_exit(1);
3504             }
3505             video_enc->rc_override=
3506                 av_realloc(video_enc->rc_override,
3507                            sizeof(RcOverride)*(i+1));
3508             video_enc->rc_override[i].start_frame= start;
3509             video_enc->rc_override[i].end_frame  = end;
3510             if(q>0){
3511                 video_enc->rc_override[i].qscale= q;
3512                 video_enc->rc_override[i].quality_factor= 1.0;
3513             }
3514             else{
3515                 video_enc->rc_override[i].qscale= 0;
3516                 video_enc->rc_override[i].quality_factor= -q/100.0;
3517             }
3518             p= strchr(p, '/');
3519             if(p) p++;
3520         }
3521         video_enc->rc_override_count=i;
3522         if (!video_enc->rc_initial_buffer_occupancy)
3523             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3524         video_enc->me_threshold= me_threshold;
3525         video_enc->intra_dc_precision= intra_dc_precision - 8;
3526
3527         if (do_psnr)
3528             video_enc->flags|= CODEC_FLAG_PSNR;
3529
3530         /* two pass mode */
3531         if (do_pass) {
3532             if (do_pass == 1) {
3533                 video_enc->flags |= CODEC_FLAG_PASS1;
3534             } else {
3535                 video_enc->flags |= CODEC_FLAG_PASS2;
3536             }
3537         }
3538
3539         if (forced_key_frames)
3540             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3541     }
3542     if (video_language) {
3543         av_metadata_set2(&st->metadata, "language", video_language, 0);
3544         av_freep(&video_language);
3545     }
3546
3547     /* reset some key parameters */
3548     video_disable = 0;
3549     av_freep(&video_codec_name);
3550     av_freep(&forced_key_frames);
3551     video_stream_copy = 0;
3552     frame_pix_fmt = PIX_FMT_NONE;
3553 }
3554
3555 static void new_audio_stream(AVFormatContext *oc, int file_idx)
3556 {
3557     AVStream *st;
3558     AVOutputStream *ost;
3559     AVCodec *codec= NULL;
3560     AVCodecContext *audio_enc;
3561     enum CodecID codec_id = CODEC_ID_NONE;
3562
3563     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3564     if (!st) {
3565         fprintf(stderr, "Could not alloc stream\n");
3566         ffmpeg_exit(1);
3567     }
3568     ost = new_output_stream(oc, file_idx);
3569
3570     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3571     if(!audio_stream_copy){
3572         if (audio_codec_name) {
3573             codec_id = find_codec_or_die(audio_codec_name, AVMEDIA_TYPE_AUDIO, 1,
3574                                          avcodec_opts[AVMEDIA_TYPE_AUDIO]->strict_std_compliance);
3575             codec = avcodec_find_encoder_by_name(audio_codec_name);
3576             output_codecs[nb_output_codecs-1] = codec;
3577         } else {
3578             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_AUDIO);
3579             codec = avcodec_find_encoder(codec_id);
3580         }
3581     }
3582
3583     avcodec_get_context_defaults3(st->codec, codec);
3584
3585     ost->bitstream_filters = audio_bitstream_filters;
3586     audio_bitstream_filters= NULL;
3587
3588     st->codec->thread_count= thread_count;
3589
3590     audio_enc = st->codec;
3591     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3592
3593     if(audio_codec_tag)
3594         audio_enc->codec_tag= audio_codec_tag;
3595
3596     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3597         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3598         avcodec_opts[AVMEDIA_TYPE_AUDIO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3599     }
3600     if (audio_stream_copy) {
3601         st->stream_copy = 1;
3602         audio_enc->channels = audio_channels;
3603         audio_enc->sample_rate = audio_sample_rate;
3604     } else {
3605         audio_enc->codec_id = codec_id;
3606         set_context_opts(audio_enc, avcodec_opts[AVMEDIA_TYPE_AUDIO], AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3607
3608         if (audio_qscale > QSCALE_NONE) {
3609             audio_enc->flags |= CODEC_FLAG_QSCALE;
3610             audio_enc->global_quality = st->quality = FF_QP2LAMBDA * audio_qscale;
3611         }
3612         audio_enc->channels = audio_channels;
3613         audio_enc->sample_fmt = audio_sample_fmt;
3614         audio_enc->sample_rate = audio_sample_rate;
3615         audio_enc->channel_layout = channel_layout;
3616         if (av_get_channel_layout_nb_channels(channel_layout) != audio_channels)
3617             audio_enc->channel_layout = 0;
3618         choose_sample_fmt(st, codec);
3619         choose_sample_rate(st, codec);
3620     }
3621     audio_enc->time_base= (AVRational){1, audio_sample_rate};
3622     if (audio_language) {
3623         av_metadata_set2(&st->metadata, "language", audio_language, 0);
3624         av_freep(&audio_language);
3625     }
3626
3627     /* reset some key parameters */
3628     audio_disable = 0;
3629     av_freep(&audio_codec_name);
3630     audio_stream_copy = 0;
3631 }
3632
3633 static void new_data_stream(AVFormatContext *oc, int file_idx)
3634 {
3635     AVStream *st;
3636     AVOutputStream *ost;
3637     AVCodec *codec=NULL;
3638     AVCodecContext *data_enc;
3639
3640     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3641     if (!st) {
3642         fprintf(stderr, "Could not alloc stream\n");
3643         ffmpeg_exit(1);
3644     }
3645     ost = new_output_stream(oc, file_idx);
3646     data_enc = st->codec;
3647     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3648     if (!data_stream_copy) {