Fix dct32() compilation with --disable-yasm
[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
430 static void
431 sigterm_handler(int sig)
432 {
433     received_sigterm = sig;
434     term_exit();
435 }
436
437 static void term_init(void)
438 {
439     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
440     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
441 #ifdef SIGXCPU
442     signal(SIGXCPU, sigterm_handler);
443 #endif
444 }
445
446 static int decode_interrupt_cb(void)
447 {
448     return received_sigterm;
449 }
450
451 static int ffmpeg_exit(int ret)
452 {
453     int i;
454
455     /* close files */
456     for(i=0;i<nb_output_files;i++) {
457         AVFormatContext *s = output_files[i];
458         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
459             avio_close(s->pb);
460         avformat_free_context(s);
461         av_free(output_streams_for_file[i]);
462     }
463     for(i=0;i<nb_input_files;i++) {
464         av_close_input_file(input_files[i]);
465         av_free(input_files_ts_scale[i]);
466     }
467
468     av_free(intra_matrix);
469     av_free(inter_matrix);
470
471     if (vstats_file)
472         fclose(vstats_file);
473     av_free(vstats_filename);
474
475     av_free(streamid_map);
476     av_free(input_codecs);
477     av_free(output_codecs);
478     av_free(stream_maps);
479     av_free(meta_data_maps);
480
481     av_free(video_codec_name);
482     av_free(audio_codec_name);
483     av_free(subtitle_codec_name);
484     av_free(data_codec_name);
485
486     av_free(video_standard);
487
488     uninit_opts();
489     av_free(audio_buf);
490     av_free(audio_out);
491     allocated_audio_buf_size= allocated_audio_out_size= 0;
492     av_free(samples);
493
494 #if CONFIG_AVFILTER
495     avfilter_uninit();
496 #endif
497
498     if (received_sigterm) {
499         fprintf(stderr,
500             "Received signal %d: terminating.\n",
501             (int) received_sigterm);
502         exit (255);
503     }
504
505     exit(ret); /* not all OS-es handle main() return value */
506     return ret;
507 }
508
509 /* similar to ff_dynarray_add() and av_fast_realloc() */
510 static void *grow_array(void *array, int elem_size, int *size, int new_size)
511 {
512     if (new_size >= INT_MAX / elem_size) {
513         fprintf(stderr, "Array too big.\n");
514         ffmpeg_exit(1);
515     }
516     if (*size < new_size) {
517         uint8_t *tmp = av_realloc(array, new_size*elem_size);
518         if (!tmp) {
519             fprintf(stderr, "Could not alloc buffer.\n");
520             ffmpeg_exit(1);
521         }
522         memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
523         *size = new_size;
524         return tmp;
525     }
526     return array;
527 }
528
529 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
530 {
531     if(codec && codec->sample_fmts){
532         const enum AVSampleFormat *p= codec->sample_fmts;
533         for(; *p!=-1; p++){
534             if(*p == st->codec->sample_fmt)
535                 break;
536         }
537         if (*p == -1) {
538             av_log(NULL, AV_LOG_WARNING,
539                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
540                    av_get_sample_fmt_name(st->codec->sample_fmt),
541                    codec->name,
542                    av_get_sample_fmt_name(codec->sample_fmts[0]));
543             st->codec->sample_fmt = codec->sample_fmts[0];
544         }
545     }
546 }
547
548 /**
549  * Update the requested input sample format based on the output sample format.
550  * This is currently only used to request float output from decoders which
551  * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
552  * Ideally this will be removed in the future when decoders do not do format
553  * conversion and only output in their native format.
554  */
555 static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
556                               AVCodecContext *enc)
557 {
558     /* if sample formats match or a decoder sample format has already been
559        requested, just return */
560     if (enc->sample_fmt == dec->sample_fmt ||
561         dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
562         return;
563
564     /* if decoder supports more than one output format */
565     if (dec_codec && dec_codec->sample_fmts &&
566         dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
567         dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
568         enum AVSampleFormat *p;
569         int min_dec = -1, min_inc = -1;
570
571         /* find a matching sample format in the encoder */
572         for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
573             if (*p == enc->sample_fmt) {
574                 dec->request_sample_fmt = *p;
575                 return;
576             } else if (*p > enc->sample_fmt) {
577                 min_inc = FFMIN(min_inc, *p - enc->sample_fmt);
578             } else
579                 min_dec = FFMIN(min_dec, enc->sample_fmt - *p);
580         }
581
582         /* if none match, provide the one that matches quality closest */
583         dec->request_sample_fmt = min_inc > 0 ? enc->sample_fmt + min_inc :
584                                   enc->sample_fmt - min_dec;
585     }
586 }
587
588 static void choose_sample_rate(AVStream *st, AVCodec *codec)
589 {
590     if(codec && codec->supported_samplerates){
591         const int *p= codec->supported_samplerates;
592         int best=0;
593         int best_dist=INT_MAX;
594         for(; *p; p++){
595             int dist= abs(st->codec->sample_rate - *p);
596             if(dist < best_dist){
597                 best_dist= dist;
598                 best= *p;
599             }
600         }
601         if(best_dist){
602             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
603         }
604         st->codec->sample_rate= best;
605     }
606 }
607
608 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
609 {
610     if(codec && codec->pix_fmts){
611         const enum PixelFormat *p= codec->pix_fmts;
612         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
613             if(st->codec->codec_id==CODEC_ID_MJPEG){
614                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
615             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
616                 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};
617             }
618         }
619         for(; *p!=-1; p++){
620             if(*p == st->codec->pix_fmt)
621                 break;
622         }
623         if (*p == -1) {
624             if(st->codec->pix_fmt != PIX_FMT_NONE)
625                 av_log(NULL, AV_LOG_WARNING,
626                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
627                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
628                         codec->name,
629                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
630             st->codec->pix_fmt = codec->pix_fmts[0];
631         }
632     }
633 }
634
635 static AVOutputStream *new_output_stream(AVFormatContext *oc, int file_idx)
636 {
637     int idx = oc->nb_streams - 1;
638     AVOutputStream *ost;
639
640     output_streams_for_file[file_idx] =
641         grow_array(output_streams_for_file[file_idx],
642                    sizeof(*output_streams_for_file[file_idx]),
643                    &nb_output_streams_for_file[file_idx],
644                    oc->nb_streams);
645     ost = output_streams_for_file[file_idx][idx] =
646         av_mallocz(sizeof(AVOutputStream));
647     if (!ost) {
648         fprintf(stderr, "Could not alloc output stream\n");
649         ffmpeg_exit(1);
650     }
651     ost->file_index = file_idx;
652     ost->index = idx;
653
654     ost->sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
655     return ost;
656 }
657
658 static int read_ffserver_streams(AVFormatContext *s, const char *filename)
659 {
660     int i, err;
661     AVFormatContext *ic;
662     int nopts = 0;
663
664     err = av_open_input_file(&ic, filename, NULL, FFM_PACKET_SIZE, NULL);
665     if (err < 0)
666         return err;
667     /* copy stream format */
668     s->nb_streams = 0;
669     for(i=0;i<ic->nb_streams;i++) {
670         AVStream *st;
671         AVCodec *codec;
672
673         s->nb_streams++;
674
675         // FIXME: a more elegant solution is needed
676         st = av_mallocz(sizeof(AVStream));
677         memcpy(st, ic->streams[i], sizeof(AVStream));
678         st->codec = avcodec_alloc_context();
679         if (!st->codec) {
680             print_error(filename, AVERROR(ENOMEM));
681             ffmpeg_exit(1);
682         }
683         avcodec_copy_context(st->codec, ic->streams[i]->codec);
684         s->streams[i] = st;
685
686         codec = avcodec_find_encoder(st->codec->codec_id);
687         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
688             if (audio_stream_copy) {
689                 st->stream_copy = 1;
690             } else
691                 choose_sample_fmt(st, codec);
692         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
693             if (video_stream_copy) {
694                 st->stream_copy = 1;
695             } else
696                 choose_pixel_fmt(st, codec);
697         }
698
699         if(st->codec->flags & CODEC_FLAG_BITEXACT)
700             nopts = 1;
701
702         new_output_stream(s, nb_output_files);
703     }
704
705     if (!nopts)
706         s->timestamp = av_gettime();
707
708     av_close_input_file(ic);
709     return 0;
710 }
711
712 static double
713 get_sync_ipts(const AVOutputStream *ost)
714 {
715     const AVInputStream *ist = ost->sync_ist;
716     return (double)(ist->pts - start_time)/AV_TIME_BASE;
717 }
718
719 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
720     int ret;
721
722     while(bsfc){
723         AVPacket new_pkt= *pkt;
724         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
725                                           &new_pkt.data, &new_pkt.size,
726                                           pkt->data, pkt->size,
727                                           pkt->flags & AV_PKT_FLAG_KEY);
728         if(a>0){
729             av_free_packet(pkt);
730             new_pkt.destruct= av_destruct_packet;
731         } else if(a<0){
732             fprintf(stderr, "%s failed for stream %d, codec %s",
733                     bsfc->filter->name, pkt->stream_index,
734                     avctx->codec ? avctx->codec->name : "copy");
735             print_error("", a);
736             if (exit_on_error)
737                 ffmpeg_exit(1);
738         }
739         *pkt= new_pkt;
740
741         bsfc= bsfc->next;
742     }
743
744     ret= av_interleaved_write_frame(s, pkt);
745     if(ret < 0){
746         print_error("av_interleaved_write_frame()", ret);
747         ffmpeg_exit(1);
748     }
749 }
750
751 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
752
753 static void do_audio_out(AVFormatContext *s,
754                          AVOutputStream *ost,
755                          AVInputStream *ist,
756                          unsigned char *buf, int size)
757 {
758     uint8_t *buftmp;
759     int64_t audio_out_size, audio_buf_size;
760     int64_t allocated_for_size= size;
761
762     int size_out, frame_bytes, ret, resample_changed;
763     AVCodecContext *enc= ost->st->codec;
764     AVCodecContext *dec= ist->st->codec;
765     int osize= av_get_bits_per_sample_fmt(enc->sample_fmt)/8;
766     int isize= av_get_bits_per_sample_fmt(dec->sample_fmt)/8;
767     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
768
769 need_realloc:
770     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
771     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
772     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
773     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
774     audio_buf_size*= osize*enc->channels;
775
776     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
777     if(coded_bps > 8*osize)
778         audio_out_size= audio_out_size * coded_bps / (8*osize);
779     audio_out_size += FF_MIN_BUFFER_SIZE;
780
781     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
782         fprintf(stderr, "Buffer sizes too large\n");
783         ffmpeg_exit(1);
784     }
785
786     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
787     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
788     if (!audio_buf || !audio_out){
789         fprintf(stderr, "Out of memory in do_audio_out\n");
790         ffmpeg_exit(1);
791     }
792
793     if (enc->channels != dec->channels || enc->sample_rate != dec->sample_rate)
794         ost->audio_resample = 1;
795
796     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
797                        ost->resample_channels    != dec->channels   ||
798                        ost->resample_sample_rate != dec->sample_rate;
799
800     if ((ost->audio_resample && !ost->resample) || resample_changed) {
801         if (resample_changed) {
802             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",
803                    ist->file_index, ist->index,
804                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
805                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
806             ost->resample_sample_fmt  = dec->sample_fmt;
807             ost->resample_channels    = dec->channels;
808             ost->resample_sample_rate = dec->sample_rate;
809             if (ost->resample)
810                 audio_resample_close(ost->resample);
811         }
812         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
813         if (audio_sync_method <= 1 &&
814             ost->resample_sample_fmt  == enc->sample_fmt &&
815             ost->resample_channels    == enc->channels   &&
816             ost->resample_sample_rate == enc->sample_rate) {
817             ost->resample = NULL;
818             ost->audio_resample = 0;
819         } else if (ost->audio_resample) {
820             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
821                 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
822             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
823                                                    enc->sample_rate, dec->sample_rate,
824                                                    enc->sample_fmt,  dec->sample_fmt,
825                                                    16, 10, 0, 0.8);
826             if (!ost->resample) {
827                 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
828                         dec->channels, dec->sample_rate,
829                         enc->channels, enc->sample_rate);
830                 ffmpeg_exit(1);
831             }
832         }
833     }
834
835 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
836     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
837         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
838         if (ost->reformat_ctx)
839             av_audio_convert_free(ost->reformat_ctx);
840         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
841                                                    dec->sample_fmt, 1, NULL, 0);
842         if (!ost->reformat_ctx) {
843             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
844                 av_get_sample_fmt_name(dec->sample_fmt),
845                 av_get_sample_fmt_name(enc->sample_fmt));
846             ffmpeg_exit(1);
847         }
848         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
849     }
850
851     if(audio_sync_method){
852         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
853                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
854         double idelta= delta*dec->sample_rate / enc->sample_rate;
855         int byte_delta= ((int)idelta)*2*dec->channels;
856
857         //FIXME resample delay
858         if(fabs(delta) > 50){
859             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
860                 if(byte_delta < 0){
861                     byte_delta= FFMAX(byte_delta, -size);
862                     size += byte_delta;
863                     buf  -= byte_delta;
864                     if(verbose > 2)
865                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
866                     if(!size)
867                         return;
868                     ist->is_start=0;
869                 }else{
870                     static uint8_t *input_tmp= NULL;
871                     input_tmp= av_realloc(input_tmp, byte_delta + size);
872
873                     if(byte_delta > allocated_for_size - size){
874                         allocated_for_size= byte_delta + (int64_t)size;
875                         goto need_realloc;
876                     }
877                     ist->is_start=0;
878
879                     memset(input_tmp, 0, byte_delta);
880                     memcpy(input_tmp + byte_delta, buf, size);
881                     buf= input_tmp;
882                     size += byte_delta;
883                     if(verbose > 2)
884                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
885                 }
886             }else if(audio_sync_method>1){
887                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
888                 av_assert0(ost->audio_resample);
889                 if(verbose > 2)
890                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
891 //                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));
892                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
893             }
894         }
895     }else
896         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
897                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
898
899     if (ost->audio_resample) {
900         buftmp = audio_buf;
901         size_out = audio_resample(ost->resample,
902                                   (short *)buftmp, (short *)buf,
903                                   size / (dec->channels * isize));
904         size_out = size_out * enc->channels * osize;
905     } else {
906         buftmp = buf;
907         size_out = size;
908     }
909
910     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
911         const void *ibuf[6]= {buftmp};
912         void *obuf[6]= {audio_buf};
913         int istride[6]= {isize};
914         int ostride[6]= {osize};
915         int len= size_out/istride[0];
916         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
917             printf("av_audio_convert() failed\n");
918             if (exit_on_error)
919                 ffmpeg_exit(1);
920             return;
921         }
922         buftmp = audio_buf;
923         size_out = len*osize;
924     }
925
926     /* now encode as many frames as possible */
927     if (enc->frame_size > 1) {
928         /* output resampled raw samples */
929         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
930             fprintf(stderr, "av_fifo_realloc2() failed\n");
931             ffmpeg_exit(1);
932         }
933         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
934
935         frame_bytes = enc->frame_size * osize * enc->channels;
936
937         while (av_fifo_size(ost->fifo) >= frame_bytes) {
938             AVPacket pkt;
939             av_init_packet(&pkt);
940
941             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
942
943             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
944
945             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
946                                        (short *)audio_buf);
947             if (ret < 0) {
948                 fprintf(stderr, "Audio encoding failed\n");
949                 ffmpeg_exit(1);
950             }
951             audio_size += ret;
952             pkt.stream_index= ost->index;
953             pkt.data= audio_out;
954             pkt.size= ret;
955             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
956                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
957             pkt.flags |= AV_PKT_FLAG_KEY;
958             write_frame(s, &pkt, enc, ost->bitstream_filters);
959
960             ost->sync_opts += enc->frame_size;
961         }
962     } else {
963         AVPacket pkt;
964         av_init_packet(&pkt);
965
966         ost->sync_opts += size_out / (osize * enc->channels);
967
968         /* output a pcm frame */
969         /* determine the size of the coded buffer */
970         size_out /= osize;
971         if (coded_bps)
972             size_out = size_out*coded_bps/8;
973
974         if(size_out > audio_out_size){
975             fprintf(stderr, "Internal error, buffer size too small\n");
976             ffmpeg_exit(1);
977         }
978
979         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
980         ret = avcodec_encode_audio(enc, audio_out, size_out,
981                                    (short *)buftmp);
982         if (ret < 0) {
983             fprintf(stderr, "Audio encoding failed\n");
984             ffmpeg_exit(1);
985         }
986         audio_size += ret;
987         pkt.stream_index= ost->index;
988         pkt.data= audio_out;
989         pkt.size= ret;
990         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
991             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
992         pkt.flags |= AV_PKT_FLAG_KEY;
993         write_frame(s, &pkt, enc, ost->bitstream_filters);
994     }
995 }
996
997 static void pre_process_video_frame(AVInputStream *ist, AVPicture *picture, void **bufp)
998 {
999     AVCodecContext *dec;
1000     AVPicture *picture2;
1001     AVPicture picture_tmp;
1002     uint8_t *buf = 0;
1003
1004     dec = ist->st->codec;
1005
1006     /* deinterlace : must be done before any resize */
1007     if (do_deinterlace) {
1008         int size;
1009
1010         /* create temporary picture */
1011         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1012         buf = av_malloc(size);
1013         if (!buf)
1014             return;
1015
1016         picture2 = &picture_tmp;
1017         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1018
1019         if(avpicture_deinterlace(picture2, picture,
1020                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1021             /* if error, do not deinterlace */
1022             fprintf(stderr, "Deinterlacing failed\n");
1023             av_free(buf);
1024             buf = NULL;
1025             picture2 = picture;
1026         }
1027     } else {
1028         picture2 = picture;
1029     }
1030
1031     if (picture != picture2)
1032         *picture = *picture2;
1033     *bufp = buf;
1034 }
1035
1036 /* we begin to correct av delay at this threshold */
1037 #define AV_DELAY_MAX 0.100
1038
1039 static void do_subtitle_out(AVFormatContext *s,
1040                             AVOutputStream *ost,
1041                             AVInputStream *ist,
1042                             AVSubtitle *sub,
1043                             int64_t pts)
1044 {
1045     static uint8_t *subtitle_out = NULL;
1046     int subtitle_out_max_size = 1024 * 1024;
1047     int subtitle_out_size, nb, i;
1048     AVCodecContext *enc;
1049     AVPacket pkt;
1050
1051     if (pts == AV_NOPTS_VALUE) {
1052         fprintf(stderr, "Subtitle packets must have a pts\n");
1053         if (exit_on_error)
1054             ffmpeg_exit(1);
1055         return;
1056     }
1057
1058     enc = ost->st->codec;
1059
1060     if (!subtitle_out) {
1061         subtitle_out = av_malloc(subtitle_out_max_size);
1062     }
1063
1064     /* Note: DVB subtitle need one packet to draw them and one other
1065        packet to clear them */
1066     /* XXX: signal it in the codec context ? */
1067     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1068         nb = 2;
1069     else
1070         nb = 1;
1071
1072     for(i = 0; i < nb; i++) {
1073         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1074         // start_display_time is required to be 0
1075         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1076         sub->end_display_time -= sub->start_display_time;
1077         sub->start_display_time = 0;
1078         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1079                                                     subtitle_out_max_size, sub);
1080         if (subtitle_out_size < 0) {
1081             fprintf(stderr, "Subtitle encoding failed\n");
1082             ffmpeg_exit(1);
1083         }
1084
1085         av_init_packet(&pkt);
1086         pkt.stream_index = ost->index;
1087         pkt.data = subtitle_out;
1088         pkt.size = subtitle_out_size;
1089         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1090         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1091             /* XXX: the pts correction is handled here. Maybe handling
1092                it in the codec would be better */
1093             if (i == 0)
1094                 pkt.pts += 90 * sub->start_display_time;
1095             else
1096                 pkt.pts += 90 * sub->end_display_time;
1097         }
1098         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1099     }
1100 }
1101
1102 static int bit_buffer_size= 1024*256;
1103 static uint8_t *bit_buffer= NULL;
1104
1105 static void do_video_out(AVFormatContext *s,
1106                          AVOutputStream *ost,
1107                          AVInputStream *ist,
1108                          AVFrame *in_picture,
1109                          int *frame_size)
1110 {
1111     int nb_frames, i, ret, resample_changed;
1112     AVFrame *final_picture, *formatted_picture, *resampling_dst;
1113     AVCodecContext *enc, *dec;
1114     double sync_ipts;
1115
1116     enc = ost->st->codec;
1117     dec = ist->st->codec;
1118
1119     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1120
1121     /* by default, we output a single frame */
1122     nb_frames = 1;
1123
1124     *frame_size = 0;
1125
1126     if(video_sync_method){
1127         double vdelta = sync_ipts - ost->sync_opts;
1128         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1129         if (vdelta < -1.1)
1130             nb_frames = 0;
1131         else if (video_sync_method == 2 || (video_sync_method<0 && (s->oformat->flags & AVFMT_VARIABLE_FPS))){
1132             if(vdelta<=-0.6){
1133                 nb_frames=0;
1134             }else if(vdelta>0.6)
1135                 ost->sync_opts= lrintf(sync_ipts);
1136         }else if (vdelta > 1.1)
1137             nb_frames = lrintf(vdelta);
1138 //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);
1139         if (nb_frames == 0){
1140             ++nb_frames_drop;
1141             if (verbose>2)
1142                 fprintf(stderr, "*** drop!\n");
1143         }else if (nb_frames > 1) {
1144             nb_frames_dup += nb_frames - 1;
1145             if (verbose>2)
1146                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1147         }
1148     }else
1149         ost->sync_opts= lrintf(sync_ipts);
1150
1151     nb_frames= FFMIN(nb_frames, max_frames[AVMEDIA_TYPE_VIDEO] - ost->frame_number);
1152     if (nb_frames <= 0)
1153         return;
1154
1155     formatted_picture = in_picture;
1156     final_picture = formatted_picture;
1157     resampling_dst = &ost->pict_tmp;
1158
1159     resample_changed = ost->resample_width   != dec->width  ||
1160                        ost->resample_height  != dec->height ||
1161                        ost->resample_pix_fmt != dec->pix_fmt;
1162
1163     if (resample_changed) {
1164         av_log(NULL, AV_LOG_INFO,
1165                "Input stream #%d.%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1166                ist->file_index, ist->index,
1167                ost->resample_width, ost->resample_height, avcodec_get_pix_fmt_name(ost->resample_pix_fmt),
1168                dec->width         , dec->height         , avcodec_get_pix_fmt_name(dec->pix_fmt));
1169         if(!ost->video_resample)
1170             ffmpeg_exit(1);
1171     }
1172
1173 #if !CONFIG_AVFILTER
1174     if (ost->video_resample) {
1175         final_picture = &ost->pict_tmp;
1176         if (resample_changed) {
1177             /* initialize a new scaler context */
1178             sws_freeContext(ost->img_resample_ctx);
1179             ost->img_resample_ctx = sws_getContext(
1180                 ist->st->codec->width,
1181                 ist->st->codec->height,
1182                 ist->st->codec->pix_fmt,
1183                 ost->st->codec->width,
1184                 ost->st->codec->height,
1185                 ost->st->codec->pix_fmt,
1186                 ost->sws_flags, NULL, NULL, NULL);
1187             if (ost->img_resample_ctx == NULL) {
1188                 fprintf(stderr, "Cannot get resampling context\n");
1189                 ffmpeg_exit(1);
1190             }
1191         }
1192         sws_scale(ost->img_resample_ctx, formatted_picture->data, formatted_picture->linesize,
1193               0, ost->resample_height, resampling_dst->data, resampling_dst->linesize);
1194     }
1195 #endif
1196
1197     /* duplicates frame if needed */
1198     for(i=0;i<nb_frames;i++) {
1199         AVPacket pkt;
1200         av_init_packet(&pkt);
1201         pkt.stream_index= ost->index;
1202
1203         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1204             /* raw pictures are written as AVPicture structure to
1205                avoid any copies. We support temorarily the older
1206                method. */
1207             AVFrame* old_frame = enc->coded_frame;
1208             enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
1209             pkt.data= (uint8_t *)final_picture;
1210             pkt.size=  sizeof(AVPicture);
1211             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1212             pkt.flags |= AV_PKT_FLAG_KEY;
1213
1214             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1215             enc->coded_frame = old_frame;
1216         } else {
1217             AVFrame big_picture;
1218
1219             big_picture= *final_picture;
1220             /* better than nothing: use input picture interlaced
1221                settings */
1222             big_picture.interlaced_frame = in_picture->interlaced_frame;
1223             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1224                 if(top_field_first == -1)
1225                     big_picture.top_field_first = in_picture->top_field_first;
1226                 else
1227                     big_picture.top_field_first = top_field_first;
1228             }
1229
1230             /* handles sameq here. This is not correct because it may
1231                not be a global option */
1232             big_picture.quality = same_quality ? ist->st->quality : ost->st->quality;
1233             if(!me_threshold)
1234                 big_picture.pict_type = 0;
1235 //            big_picture.pts = AV_NOPTS_VALUE;
1236             big_picture.pts= ost->sync_opts;
1237 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1238 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1239             if (ost->forced_kf_index < ost->forced_kf_count &&
1240                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1241                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1242                 ost->forced_kf_index++;
1243             }
1244             ret = avcodec_encode_video(enc,
1245                                        bit_buffer, bit_buffer_size,
1246                                        &big_picture);
1247             if (ret < 0) {
1248                 fprintf(stderr, "Video encoding failed\n");
1249                 ffmpeg_exit(1);
1250             }
1251
1252             if(ret>0){
1253                 pkt.data= bit_buffer;
1254                 pkt.size= ret;
1255                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1256                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1257 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1258    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1259    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1260
1261                 if(enc->coded_frame->key_frame)
1262                     pkt.flags |= AV_PKT_FLAG_KEY;
1263                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1264                 *frame_size = ret;
1265                 video_size += ret;
1266                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1267                 //        enc->frame_number-1, ret, enc->pict_type);
1268                 /* if two pass, output log */
1269                 if (ost->logfile && enc->stats_out) {
1270                     fprintf(ost->logfile, "%s", enc->stats_out);
1271                 }
1272             }
1273         }
1274         ost->sync_opts++;
1275         ost->frame_number++;
1276     }
1277 }
1278
1279 static double psnr(double d){
1280     return -10.0*log(d)/log(10.0);
1281 }
1282
1283 static void do_video_stats(AVFormatContext *os, AVOutputStream *ost,
1284                            int frame_size)
1285 {
1286     AVCodecContext *enc;
1287     int frame_number;
1288     double ti1, bitrate, avg_bitrate;
1289
1290     /* this is executed just the first time do_video_stats is called */
1291     if (!vstats_file) {
1292         vstats_file = fopen(vstats_filename, "w");
1293         if (!vstats_file) {
1294             perror("fopen");
1295             ffmpeg_exit(1);
1296         }
1297     }
1298
1299     enc = ost->st->codec;
1300     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1301         frame_number = ost->frame_number;
1302         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1303         if (enc->flags&CODEC_FLAG_PSNR)
1304             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1305
1306         fprintf(vstats_file,"f_size= %6d ", frame_size);
1307         /* compute pts value */
1308         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1309         if (ti1 < 0.01)
1310             ti1 = 0.01;
1311
1312         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1313         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1314         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1315             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1316         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1317     }
1318 }
1319
1320 static void print_report(AVFormatContext **output_files,
1321                          AVOutputStream **ost_table, int nb_ostreams,
1322                          int is_last_report)
1323 {
1324     char buf[1024];
1325     AVOutputStream *ost;
1326     AVFormatContext *oc;
1327     int64_t total_size;
1328     AVCodecContext *enc;
1329     int frame_number, vid, i;
1330     double bitrate, ti1, pts;
1331     static int64_t last_time = -1;
1332     static int qp_histogram[52];
1333
1334     if (!is_last_report) {
1335         int64_t cur_time;
1336         /* display the report every 0.5 seconds */
1337         cur_time = av_gettime();
1338         if (last_time == -1) {
1339             last_time = cur_time;
1340             return;
1341         }
1342         if ((cur_time - last_time) < 500000)
1343             return;
1344         last_time = cur_time;
1345     }
1346
1347
1348     oc = output_files[0];
1349
1350     total_size = avio_size(oc->pb);
1351     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1352         total_size= avio_tell(oc->pb);
1353
1354     buf[0] = '\0';
1355     ti1 = 1e10;
1356     vid = 0;
1357     for(i=0;i<nb_ostreams;i++) {
1358         float q = -1;
1359         ost = ost_table[i];
1360         enc = ost->st->codec;
1361         if (!ost->st->stream_copy && enc->coded_frame)
1362             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1363         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1364             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1365         }
1366         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1367             float t = (av_gettime()-timer_start) / 1000000.0;
1368
1369             frame_number = ost->frame_number;
1370             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1371                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1372             if(is_last_report)
1373                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1374             if(qp_hist){
1375                 int j;
1376                 int qp = lrintf(q);
1377                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1378                     qp_histogram[qp]++;
1379                 for(j=0; j<32; j++)
1380                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1381             }
1382             if (enc->flags&CODEC_FLAG_PSNR){
1383                 int j;
1384                 double error, error_sum=0;
1385                 double scale, scale_sum=0;
1386                 char type[3]= {'Y','U','V'};
1387                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1388                 for(j=0; j<3; j++){
1389                     if(is_last_report){
1390                         error= enc->error[j];
1391                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1392                     }else{
1393                         error= enc->coded_frame->error[j];
1394                         scale= enc->width*enc->height*255.0*255.0;
1395                     }
1396                     if(j) scale/=4;
1397                     error_sum += error;
1398                     scale_sum += scale;
1399                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1400                 }
1401                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1402             }
1403             vid = 1;
1404         }
1405         /* compute min output value */
1406         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1407         if ((pts < ti1) && (pts > 0))
1408             ti1 = pts;
1409     }
1410     if (ti1 < 0.01)
1411         ti1 = 0.01;
1412
1413     if (verbose > 0 || is_last_report) {
1414         bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1415
1416         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1417             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1418             (double)total_size / 1024, ti1, bitrate);
1419
1420         if (nb_frames_dup || nb_frames_drop)
1421           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1422                   nb_frames_dup, nb_frames_drop);
1423
1424         if (verbose >= 0)
1425             fprintf(stderr, "%s    \r", buf);
1426
1427         fflush(stderr);
1428     }
1429
1430     if (is_last_report && verbose >= 0){
1431         int64_t raw= audio_size + video_size + extra_size;
1432         fprintf(stderr, "\n");
1433         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1434                 video_size/1024.0,
1435                 audio_size/1024.0,
1436                 extra_size/1024.0,
1437                 100.0*(total_size - raw)/raw
1438         );
1439     }
1440 }
1441
1442 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1443 {
1444     int fill_char = 0x00;
1445     if (sample_fmt == AV_SAMPLE_FMT_U8)
1446         fill_char = 0x80;
1447     memset(buf, fill_char, size);
1448 }
1449
1450 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1451 static int output_packet(AVInputStream *ist, int ist_index,
1452                          AVOutputStream **ost_table, int nb_ostreams,
1453                          const AVPacket *pkt)
1454 {
1455     AVFormatContext *os;
1456     AVOutputStream *ost;
1457     int ret, i;
1458     int got_output;
1459     AVFrame picture;
1460     void *buffer_to_free = NULL;
1461     static unsigned int samples_size= 0;
1462     AVSubtitle subtitle, *subtitle_to_free;
1463     int64_t pkt_pts = AV_NOPTS_VALUE;
1464 #if CONFIG_AVFILTER
1465     int frame_available;
1466 #endif
1467
1468     AVPacket avpkt;
1469     int bps = av_get_bits_per_sample_fmt(ist->st->codec->sample_fmt)>>3;
1470
1471     if(ist->next_pts == AV_NOPTS_VALUE)
1472         ist->next_pts= ist->pts;
1473
1474     if (pkt == NULL) {
1475         /* EOF handling */
1476         av_init_packet(&avpkt);
1477         avpkt.data = NULL;
1478         avpkt.size = 0;
1479         goto handle_eof;
1480     } else {
1481         avpkt = *pkt;
1482     }
1483
1484     if(pkt->dts != AV_NOPTS_VALUE)
1485         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1486     if(pkt->pts != AV_NOPTS_VALUE)
1487         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1488
1489     //while we have more to decode or while the decoder did output something on EOF
1490     while (avpkt.size > 0 || (!pkt && got_output)) {
1491         uint8_t *data_buf, *decoded_data_buf;
1492         int data_size, decoded_data_size;
1493     handle_eof:
1494         ist->pts= ist->next_pts;
1495
1496         if(avpkt.size && avpkt.size != pkt->size &&
1497            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1498             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1499             ist->showed_multi_packet_warning=1;
1500         }
1501
1502         /* decode the packet if needed */
1503         decoded_data_buf = NULL; /* fail safe */
1504         decoded_data_size= 0;
1505         data_buf  = avpkt.data;
1506         data_size = avpkt.size;
1507         subtitle_to_free = NULL;
1508         if (ist->decoding_needed) {
1509             switch(ist->st->codec->codec_type) {
1510             case AVMEDIA_TYPE_AUDIO:{
1511                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1512                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1513                     av_free(samples);
1514                     samples= av_malloc(samples_size);
1515                 }
1516                 decoded_data_size= samples_size;
1517                     /* XXX: could avoid copy if PCM 16 bits with same
1518                        endianness as CPU */
1519                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1520                                             &avpkt);
1521                 if (ret < 0)
1522                     goto fail_decode;
1523                 avpkt.data += ret;
1524                 avpkt.size -= ret;
1525                 data_size   = ret;
1526                 got_output  = decoded_data_size > 0;
1527                 /* Some bug in mpeg audio decoder gives */
1528                 /* decoded_data_size < 0, it seems they are overflows */
1529                 if (!got_output) {
1530                     /* no audio frame */
1531                     continue;
1532                 }
1533                 decoded_data_buf = (uint8_t *)samples;
1534                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1535                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1536                 break;}
1537             case AVMEDIA_TYPE_VIDEO:
1538                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1539                     /* XXX: allocate picture correctly */
1540                     avcodec_get_frame_defaults(&picture);
1541                     avpkt.pts = pkt_pts;
1542                     avpkt.dts = ist->pts;
1543                     pkt_pts = AV_NOPTS_VALUE;
1544
1545                     ret = avcodec_decode_video2(ist->st->codec,
1546                                                 &picture, &got_output, &avpkt);
1547                     ist->st->quality= picture.quality;
1548                     if (ret < 0)
1549                         goto fail_decode;
1550                     if (!got_output) {
1551                         /* no picture yet */
1552                         goto discard_packet;
1553                     }
1554                     ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, picture.pkt_pts, picture.pkt_dts);
1555                     if (ist->st->codec->time_base.num != 0) {
1556                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1557                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1558                                           ist->st->codec->time_base.num * ticks) /
1559                             ist->st->codec->time_base.den;
1560                     }
1561                     avpkt.size = 0;
1562                     buffer_to_free = NULL;
1563                     pre_process_video_frame(ist, (AVPicture *)&picture, &buffer_to_free);
1564                     break;
1565             case AVMEDIA_TYPE_SUBTITLE:
1566                 ret = avcodec_decode_subtitle2(ist->st->codec,
1567                                                &subtitle, &got_output, &avpkt);
1568                 if (ret < 0)
1569                     goto fail_decode;
1570                 if (!got_output) {
1571                     goto discard_packet;
1572                 }
1573                 subtitle_to_free = &subtitle;
1574                 avpkt.size = 0;
1575                 break;
1576             default:
1577                 goto fail_decode;
1578             }
1579         } else {
1580             switch(ist->st->codec->codec_type) {
1581             case AVMEDIA_TYPE_AUDIO:
1582                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1583                     ist->st->codec->sample_rate;
1584                 break;
1585             case AVMEDIA_TYPE_VIDEO:
1586                 if (ist->st->codec->time_base.num != 0) {
1587                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1588                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1589                                       ist->st->codec->time_base.num * ticks) /
1590                         ist->st->codec->time_base.den;
1591                 }
1592                 break;
1593             }
1594             ret = avpkt.size;
1595             avpkt.size = 0;
1596         }
1597
1598 #if CONFIG_AVFILTER
1599         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1600             for (i = 0; i < nb_ostreams; i++) {
1601                 ost = ost_table[i];
1602                 if (ost->input_video_filter && ost->source_index == ist_index) {
1603                     AVRational sar;
1604                     if (ist->st->sample_aspect_ratio.num)
1605                         sar = ist->st->sample_aspect_ratio;
1606                     else
1607                         sar = ist->st->codec->sample_aspect_ratio;
1608                     // add it to be filtered
1609                     av_vsrc_buffer_add_frame(ost->input_video_filter, &picture,
1610                                              ist->pts,
1611                                              sar);
1612                 }
1613             }
1614         }
1615 #endif
1616
1617         // preprocess audio (volume)
1618         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1619             if (audio_volume != 256) {
1620                 short *volp;
1621                 volp = samples;
1622                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1623                     int v = ((*volp) * audio_volume + 128) >> 8;
1624                     if (v < -32768) v = -32768;
1625                     if (v >  32767) v = 32767;
1626                     *volp++ = v;
1627                 }
1628             }
1629         }
1630
1631         /* frame rate emulation */
1632         if (rate_emu) {
1633             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1634             int64_t now = av_gettime() - ist->start;
1635             if (pts > now)
1636                 usleep(pts - now);
1637         }
1638         /* if output time reached then transcode raw format,
1639            encode packets and output them */
1640         if (start_time == 0 || ist->pts >= start_time)
1641             for(i=0;i<nb_ostreams;i++) {
1642                 int frame_size;
1643
1644                 ost = ost_table[i];
1645                 if (ost->source_index == ist_index) {
1646 #if CONFIG_AVFILTER
1647                 frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1648                     !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1649                 while (frame_available) {
1650                     AVRational ist_pts_tb;
1651                     if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter)
1652                         get_filtered_video_frame(ost->output_video_filter, &picture, &ost->picref, &ist_pts_tb);
1653                     if (ost->picref)
1654                         ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1655 #endif
1656                     os = output_files[ost->file_index];
1657
1658                     /* set the input output pts pairs */
1659                     //ost->sync_ipts = (double)(ist->pts + input_files_ts_offset[ist->file_index] - start_time)/ AV_TIME_BASE;
1660
1661                     if (ost->encoding_needed) {
1662                         av_assert0(ist->decoding_needed);
1663                         switch(ost->st->codec->codec_type) {
1664                         case AVMEDIA_TYPE_AUDIO:
1665                             do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1666                             break;
1667                         case AVMEDIA_TYPE_VIDEO:
1668 #if CONFIG_AVFILTER
1669                             if (ost->picref->video && !ost->frame_aspect_ratio)
1670                                 ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
1671 #endif
1672                             do_video_out(os, ost, ist, &picture, &frame_size);
1673                             if (vstats_filename && frame_size)
1674                                 do_video_stats(os, ost, frame_size);
1675                             break;
1676                         case AVMEDIA_TYPE_SUBTITLE:
1677                             do_subtitle_out(os, ost, ist, &subtitle,
1678                                             pkt->pts);
1679                             break;
1680                         default:
1681                             abort();
1682                         }
1683                     } else {
1684                         AVFrame avframe; //FIXME/XXX remove this
1685                         AVPacket opkt;
1686                         int64_t ost_tb_start_time= av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1687
1688                         av_init_packet(&opkt);
1689
1690                         if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1691 #if !CONFIG_AVFILTER
1692                             continue;
1693 #else
1694                             goto cont;
1695 #endif
1696
1697                         /* no reencoding needed : output the packet directly */
1698                         /* force the input stream PTS */
1699
1700                         avcodec_get_frame_defaults(&avframe);
1701                         ost->st->codec->coded_frame= &avframe;
1702                         avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1703
1704                         if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1705                             audio_size += data_size;
1706                         else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1707                             video_size += data_size;
1708                             ost->sync_opts++;
1709                         }
1710
1711                         opkt.stream_index= ost->index;
1712                         if(pkt->pts != AV_NOPTS_VALUE)
1713                             opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1714                         else
1715                             opkt.pts= AV_NOPTS_VALUE;
1716
1717                         if (pkt->dts == AV_NOPTS_VALUE)
1718                             opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1719                         else
1720                             opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1721                         opkt.dts -= ost_tb_start_time;
1722
1723                         opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1724                         opkt.flags= pkt->flags;
1725
1726                         //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1727                         if(   ost->st->codec->codec_id != CODEC_ID_H264
1728                            && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1729                            && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1730                            ) {
1731                             if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1732                                 opkt.destruct= av_destruct_packet;
1733                         } else {
1734                             opkt.data = data_buf;
1735                             opkt.size = data_size;
1736                         }
1737
1738                         write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1739                         ost->st->codec->frame_number++;
1740                         ost->frame_number++;
1741                         av_free_packet(&opkt);
1742                     }
1743 #if CONFIG_AVFILTER
1744                     cont:
1745                     frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1746                                        ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1747                     if (ost->picref)
1748                         avfilter_unref_buffer(ost->picref);
1749                 }
1750 #endif
1751                 }
1752             }
1753
1754         av_free(buffer_to_free);
1755         /* XXX: allocate the subtitles in the codec ? */
1756         if (subtitle_to_free) {
1757             avsubtitle_free(subtitle_to_free);
1758             subtitle_to_free = NULL;
1759         }
1760     }
1761  discard_packet:
1762     if (pkt == NULL) {
1763         /* EOF handling */
1764
1765         for(i=0;i<nb_ostreams;i++) {
1766             ost = ost_table[i];
1767             if (ost->source_index == ist_index) {
1768                 AVCodecContext *enc= ost->st->codec;
1769                 os = output_files[ost->file_index];
1770
1771                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1772                     continue;
1773                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1774                     continue;
1775
1776                 if (ost->encoding_needed) {
1777                     for(;;) {
1778                         AVPacket pkt;
1779                         int fifo_bytes;
1780                         av_init_packet(&pkt);
1781                         pkt.stream_index= ost->index;
1782
1783                         switch(ost->st->codec->codec_type) {
1784                         case AVMEDIA_TYPE_AUDIO:
1785                             fifo_bytes = av_fifo_size(ost->fifo);
1786                             ret = 0;
1787                             /* encode any samples remaining in fifo */
1788                             if (fifo_bytes > 0) {
1789                                 int osize = av_get_bits_per_sample_fmt(enc->sample_fmt) >> 3;
1790                                 int fs_tmp = enc->frame_size;
1791
1792                                 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1793                                 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1794                                     enc->frame_size = fifo_bytes / (osize * enc->channels);
1795                                 } else { /* pad */
1796                                     int frame_bytes = enc->frame_size*osize*enc->channels;
1797                                     if (allocated_audio_buf_size < frame_bytes)
1798                                         ffmpeg_exit(1);
1799                                     generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1800                                 }
1801
1802                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1803                                 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1804                                                           ost->st->time_base.num, enc->sample_rate);
1805                                 enc->frame_size = fs_tmp;
1806                             }
1807                             if(ret <= 0) {
1808                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1809                             }
1810                             if (ret < 0) {
1811                                 fprintf(stderr, "Audio encoding failed\n");
1812                                 ffmpeg_exit(1);
1813                             }
1814                             audio_size += ret;
1815                             pkt.flags |= AV_PKT_FLAG_KEY;
1816                             break;
1817                         case AVMEDIA_TYPE_VIDEO:
1818                             ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1819                             if (ret < 0) {
1820                                 fprintf(stderr, "Video encoding failed\n");
1821                                 ffmpeg_exit(1);
1822                             }
1823                             video_size += ret;
1824                             if(enc->coded_frame && enc->coded_frame->key_frame)
1825                                 pkt.flags |= AV_PKT_FLAG_KEY;
1826                             if (ost->logfile && enc->stats_out) {
1827                                 fprintf(ost->logfile, "%s", enc->stats_out);
1828                             }
1829                             break;
1830                         default:
1831                             ret=-1;
1832                         }
1833
1834                         if(ret<=0)
1835                             break;
1836                         pkt.data= bit_buffer;
1837                         pkt.size= ret;
1838                         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1839                             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1840                         write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1841                     }
1842                 }
1843             }
1844         }
1845     }
1846
1847     return 0;
1848  fail_decode:
1849     return -1;
1850 }
1851
1852 static void print_sdp(AVFormatContext **avc, int n)
1853 {
1854     char sdp[2048];
1855
1856     av_sdp_create(avc, n, sdp, sizeof(sdp));
1857     printf("SDP:\n%s\n", sdp);
1858     fflush(stdout);
1859 }
1860
1861 static int copy_chapters(int infile, int outfile)
1862 {
1863     AVFormatContext *is = input_files[infile];
1864     AVFormatContext *os = output_files[outfile];
1865     int i;
1866
1867     for (i = 0; i < is->nb_chapters; i++) {
1868         AVChapter *in_ch = is->chapters[i], *out_ch;
1869         int64_t ts_off   = av_rescale_q(start_time - input_files_ts_offset[infile],
1870                                       AV_TIME_BASE_Q, in_ch->time_base);
1871         int64_t rt       = (recording_time == INT64_MAX) ? INT64_MAX :
1872                            av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
1873
1874
1875         if (in_ch->end < ts_off)
1876             continue;
1877         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
1878             break;
1879
1880         out_ch = av_mallocz(sizeof(AVChapter));
1881         if (!out_ch)
1882             return AVERROR(ENOMEM);
1883
1884         out_ch->id        = in_ch->id;
1885         out_ch->time_base = in_ch->time_base;
1886         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
1887         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
1888
1889         if (metadata_chapters_autocopy)
1890             av_metadata_copy(&out_ch->metadata, in_ch->metadata, 0);
1891
1892         os->nb_chapters++;
1893         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
1894         if (!os->chapters)
1895             return AVERROR(ENOMEM);
1896         os->chapters[os->nb_chapters - 1] = out_ch;
1897     }
1898     return 0;
1899 }
1900
1901 static void parse_forced_key_frames(char *kf, AVOutputStream *ost,
1902                                     AVCodecContext *avctx)
1903 {
1904     char *p;
1905     int n = 1, i;
1906     int64_t t;
1907
1908     for (p = kf; *p; p++)
1909         if (*p == ',')
1910             n++;
1911     ost->forced_kf_count = n;
1912     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1913     if (!ost->forced_kf_pts) {
1914         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1915         ffmpeg_exit(1);
1916     }
1917     for (i = 0; i < n; i++) {
1918         p = i ? strchr(p, ',') + 1 : kf;
1919         t = parse_time_or_die("force_key_frames", p, 1);
1920         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1921     }
1922 }
1923
1924 /*
1925  * The following code is the main loop of the file converter
1926  */
1927 static int transcode(AVFormatContext **output_files,
1928                      int nb_output_files,
1929                      AVFormatContext **input_files,
1930                      int nb_input_files,
1931                      AVStreamMap *stream_maps, int nb_stream_maps)
1932 {
1933     int ret = 0, i, j, k, n, nb_istreams = 0, nb_ostreams = 0;
1934     AVFormatContext *is, *os;
1935     AVCodecContext *codec, *icodec;
1936     AVOutputStream *ost, **ost_table = NULL;
1937     AVInputStream *ist, **ist_table = NULL;
1938     AVInputFile *file_table;
1939     char error[1024];
1940     int want_sdp = 1;
1941     uint8_t no_packet[MAX_FILES]={0};
1942     int no_packet_count=0;
1943
1944     file_table= av_mallocz(nb_input_files * sizeof(AVInputFile));
1945     if (!file_table)
1946         goto fail;
1947
1948     /* input stream init */
1949     j = 0;
1950     for(i=0;i<nb_input_files;i++) {
1951         is = input_files[i];
1952         file_table[i].ist_index = j;
1953         file_table[i].nb_streams = is->nb_streams;
1954         j += is->nb_streams;
1955     }
1956     nb_istreams = j;
1957
1958     ist_table = av_mallocz(nb_istreams * sizeof(AVInputStream *));
1959     if (!ist_table)
1960         goto fail;
1961
1962     for(i=0;i<nb_istreams;i++) {
1963         ist = av_mallocz(sizeof(AVInputStream));
1964         if (!ist)
1965             goto fail;
1966         ist_table[i] = ist;
1967     }
1968     j = 0;
1969     for(i=0;i<nb_input_files;i++) {
1970         is = input_files[i];
1971         for(k=0;k<is->nb_streams;k++) {
1972             ist = ist_table[j++];
1973             ist->st = is->streams[k];
1974             ist->file_index = i;
1975             ist->index = k;
1976             ist->discard = 1; /* the stream is discarded by default
1977                                  (changed later) */
1978
1979             if (rate_emu) {
1980                 ist->start = av_gettime();
1981             }
1982         }
1983     }
1984
1985     /* output stream init */
1986     nb_ostreams = 0;
1987     for(i=0;i<nb_output_files;i++) {
1988         os = output_files[i];
1989         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1990             av_dump_format(output_files[i], i, output_files[i]->filename, 1);
1991             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
1992             ret = AVERROR(EINVAL);
1993             goto fail;
1994         }
1995         nb_ostreams += os->nb_streams;
1996     }
1997     if (nb_stream_maps > 0 && nb_stream_maps != nb_ostreams) {
1998         fprintf(stderr, "Number of stream maps must match number of output streams\n");
1999         ret = AVERROR(EINVAL);
2000         goto fail;
2001     }
2002
2003     /* Sanity check the mapping args -- do the input files & streams exist? */
2004     for(i=0;i<nb_stream_maps;i++) {
2005         int fi = stream_maps[i].file_index;
2006         int si = stream_maps[i].stream_index;
2007
2008         if (fi < 0 || fi > nb_input_files - 1 ||
2009             si < 0 || si > file_table[fi].nb_streams - 1) {
2010             fprintf(stderr,"Could not find input stream #%d.%d\n", fi, si);
2011             ret = AVERROR(EINVAL);
2012             goto fail;
2013         }
2014         fi = stream_maps[i].sync_file_index;
2015         si = stream_maps[i].sync_stream_index;
2016         if (fi < 0 || fi > nb_input_files - 1 ||
2017             si < 0 || si > file_table[fi].nb_streams - 1) {
2018             fprintf(stderr,"Could not find sync stream #%d.%d\n", fi, si);
2019             ret = AVERROR(EINVAL);
2020             goto fail;
2021         }
2022     }
2023
2024     ost_table = av_mallocz(sizeof(AVOutputStream *) * nb_ostreams);
2025     if (!ost_table)
2026         goto fail;
2027     n = 0;
2028     for(k=0;k<nb_output_files;k++) {
2029         os = output_files[k];
2030         for(i=0;i<os->nb_streams;i++,n++) {
2031             int found;
2032             ost = ost_table[n] = output_streams_for_file[k][i];
2033             ost->st = os->streams[i];
2034             if (nb_stream_maps > 0) {
2035                 ost->source_index = file_table[stream_maps[n].file_index].ist_index +
2036                     stream_maps[n].stream_index;
2037
2038                 /* Sanity check that the stream types match */
2039                 if (ist_table[ost->source_index]->st->codec->codec_type != ost->st->codec->codec_type) {
2040                     int i= ost->file_index;
2041                     av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2042                     fprintf(stderr, "Codec type mismatch for mapping #%d.%d -> #%d.%d\n",
2043                         stream_maps[n].file_index, stream_maps[n].stream_index,
2044                         ost->file_index, ost->index);
2045                     ffmpeg_exit(1);
2046                 }
2047
2048             } else {
2049                 int best_nb_frames=-1;
2050                 /* get corresponding input stream index : we select the first one with the right type */
2051                 found = 0;
2052                 for(j=0;j<nb_istreams;j++) {
2053                     int skip=0;
2054                     ist = ist_table[j];
2055                     if(opt_programid){
2056                         int pi,si;
2057                         AVFormatContext *f= input_files[ ist->file_index ];
2058                         skip=1;
2059                         for(pi=0; pi<f->nb_programs; pi++){
2060                             AVProgram *p= f->programs[pi];
2061                             if(p->id == opt_programid)
2062                                 for(si=0; si<p->nb_stream_indexes; si++){
2063                                     if(f->streams[ p->stream_index[si] ] == ist->st)
2064                                         skip=0;
2065                                 }
2066                         }
2067                     }
2068                     if (ist->discard && ist->st->discard != AVDISCARD_ALL && !skip &&
2069                         ist->st->codec->codec_type == ost->st->codec->codec_type) {
2070                         if(best_nb_frames < ist->st->codec_info_nb_frames){
2071                             best_nb_frames= ist->st->codec_info_nb_frames;
2072                             ost->source_index = j;
2073                             found = 1;
2074                         }
2075                     }
2076                 }
2077
2078                 if (!found) {
2079                     if(! opt_programid) {
2080                         /* try again and reuse existing stream */
2081                         for(j=0;j<nb_istreams;j++) {
2082                             ist = ist_table[j];
2083                             if (   ist->st->codec->codec_type == ost->st->codec->codec_type
2084                                 && ist->st->discard != AVDISCARD_ALL) {
2085                                 ost->source_index = j;
2086                                 found = 1;
2087                             }
2088                         }
2089                     }
2090                     if (!found) {
2091                         int i= ost->file_index;
2092                         av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2093                         fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",
2094                                 ost->file_index, ost->index);
2095                         ffmpeg_exit(1);
2096                     }
2097                 }
2098             }
2099             ist = ist_table[ost->source_index];
2100             ist->discard = 0;
2101             ost->sync_ist = (nb_stream_maps > 0) ?
2102                 ist_table[file_table[stream_maps[n].sync_file_index].ist_index +
2103                          stream_maps[n].sync_stream_index] : ist;
2104         }
2105     }
2106
2107     /* for each output stream, we compute the right encoding parameters */
2108     for(i=0;i<nb_ostreams;i++) {
2109         ost = ost_table[i];
2110         os = output_files[ost->file_index];
2111         ist = ist_table[ost->source_index];
2112
2113         codec = ost->st->codec;
2114         icodec = ist->st->codec;
2115
2116         if (metadata_streams_autocopy)
2117             av_metadata_copy(&ost->st->metadata, ist->st->metadata,
2118                              AV_METADATA_DONT_OVERWRITE);
2119
2120         ost->st->disposition = ist->st->disposition;
2121         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2122         codec->chroma_sample_location = icodec->chroma_sample_location;
2123
2124         if (ost->st->stream_copy) {
2125             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2126
2127             if (extra_size > INT_MAX)
2128                 goto fail;
2129
2130             /* if stream_copy is selected, no need to decode or encode */
2131             codec->codec_id = icodec->codec_id;
2132             codec->codec_type = icodec->codec_type;
2133
2134             if(!codec->codec_tag){
2135                 if(   !os->oformat->codec_tag
2136                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2137                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2138                     codec->codec_tag = icodec->codec_tag;
2139             }
2140
2141             codec->bit_rate = icodec->bit_rate;
2142             codec->rc_max_rate    = icodec->rc_max_rate;
2143             codec->rc_buffer_size = icodec->rc_buffer_size;
2144             codec->extradata= av_mallocz(extra_size);
2145             if (!codec->extradata)
2146                 goto fail;
2147             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2148             codec->extradata_size= icodec->extradata_size;
2149             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){
2150                 codec->time_base = icodec->time_base;
2151                 codec->time_base.num *= icodec->ticks_per_frame;
2152                 av_reduce(&codec->time_base.num, &codec->time_base.den,
2153                           codec->time_base.num, codec->time_base.den, INT_MAX);
2154             }else
2155                 codec->time_base = ist->st->time_base;
2156             switch(codec->codec_type) {
2157             case AVMEDIA_TYPE_AUDIO:
2158                 if(audio_volume != 256) {
2159                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2160                     ffmpeg_exit(1);
2161                 }
2162                 codec->channel_layout = icodec->channel_layout;
2163                 codec->sample_rate = icodec->sample_rate;
2164                 codec->channels = icodec->channels;
2165                 codec->frame_size = icodec->frame_size;
2166                 codec->audio_service_type = icodec->audio_service_type;
2167                 codec->block_align= icodec->block_align;
2168                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2169                     codec->block_align= 0;
2170                 if(codec->codec_id == CODEC_ID_AC3)
2171                     codec->block_align= 0;
2172                 break;
2173             case AVMEDIA_TYPE_VIDEO:
2174                 codec->pix_fmt = icodec->pix_fmt;
2175                 codec->width = icodec->width;
2176                 codec->height = icodec->height;
2177                 codec->has_b_frames = icodec->has_b_frames;
2178                 if (!codec->sample_aspect_ratio.num) {
2179                     codec->sample_aspect_ratio =
2180                     ost->st->sample_aspect_ratio =
2181                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2182                         ist->st->codec->sample_aspect_ratio.num ?
2183                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2184                 }
2185                 break;
2186             case AVMEDIA_TYPE_SUBTITLE:
2187                 codec->width = icodec->width;
2188                 codec->height = icodec->height;
2189                 break;
2190             case AVMEDIA_TYPE_DATA:
2191                 break;
2192             default:
2193                 abort();
2194             }
2195         } else {
2196             switch(codec->codec_type) {
2197             case AVMEDIA_TYPE_AUDIO:
2198                 ost->fifo= av_fifo_alloc(1024);
2199                 if(!ost->fifo)
2200                     goto fail;
2201                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2202                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2203                 icodec->request_channels = codec->channels;
2204                 ist->decoding_needed = 1;
2205                 ost->encoding_needed = 1;
2206                 ost->resample_sample_fmt  = icodec->sample_fmt;
2207                 ost->resample_sample_rate = icodec->sample_rate;
2208                 ost->resample_channels    = icodec->channels;
2209                 break;
2210             case AVMEDIA_TYPE_VIDEO:
2211                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2212                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2213                     ffmpeg_exit(1);
2214                 }
2215                 ost->video_resample = codec->width   != icodec->width  ||
2216                                       codec->height  != icodec->height ||
2217                                       codec->pix_fmt != icodec->pix_fmt;
2218                 if (ost->video_resample) {
2219 #if !CONFIG_AVFILTER
2220                     avcodec_get_frame_defaults(&ost->pict_tmp);
2221                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2222                                          codec->width, codec->height)) {
2223                         fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
2224                         ffmpeg_exit(1);
2225                     }
2226                     ost->img_resample_ctx = sws_getContext(
2227                         icodec->width,
2228                         icodec->height,
2229                             icodec->pix_fmt,
2230                             codec->width,
2231                             codec->height,
2232                             codec->pix_fmt,
2233                             ost->sws_flags, NULL, NULL, NULL);
2234                     if (ost->img_resample_ctx == NULL) {
2235                         fprintf(stderr, "Cannot get resampling context\n");
2236                         ffmpeg_exit(1);
2237                     }
2238 #endif
2239                     codec->bits_per_raw_sample= 0;
2240                 }
2241                 ost->resample_height = icodec->height;
2242                 ost->resample_width  = icodec->width;
2243                 ost->resample_pix_fmt= icodec->pix_fmt;
2244                 ost->encoding_needed = 1;
2245                 ist->decoding_needed = 1;
2246
2247 #if CONFIG_AVFILTER
2248                 if (configure_video_filters(ist, ost)) {
2249                     fprintf(stderr, "Error opening filters!\n");
2250                     exit(1);
2251                 }
2252 #endif
2253                 break;
2254             case AVMEDIA_TYPE_SUBTITLE:
2255                 ost->encoding_needed = 1;
2256                 ist->decoding_needed = 1;
2257                 break;
2258             default:
2259                 abort();
2260                 break;
2261             }
2262             /* two pass mode */
2263             if (ost->encoding_needed &&
2264                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2265                 char logfilename[1024];
2266                 FILE *f;
2267
2268                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2269                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2270                          i);
2271                 if (codec->flags & CODEC_FLAG_PASS1) {
2272                     f = fopen(logfilename, "wb");
2273                     if (!f) {
2274                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2275                         ffmpeg_exit(1);
2276                     }
2277                     ost->logfile = f;
2278                 } else {
2279                     char  *logbuffer;
2280                     size_t logbuffer_size;
2281                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2282                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2283                         ffmpeg_exit(1);
2284                     }
2285                     codec->stats_in = logbuffer;
2286                 }
2287             }
2288         }
2289         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2290             int size= codec->width * codec->height;
2291             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2292         }
2293     }
2294
2295     if (!bit_buffer)
2296         bit_buffer = av_malloc(bit_buffer_size);
2297     if (!bit_buffer) {
2298         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2299                 bit_buffer_size);
2300         ret = AVERROR(ENOMEM);
2301         goto fail;
2302     }
2303
2304     /* open each encoder */
2305     for(i=0;i<nb_ostreams;i++) {
2306         ost = ost_table[i];
2307         if (ost->encoding_needed) {
2308             AVCodec *codec = i < nb_output_codecs ? output_codecs[i] : NULL;
2309             AVCodecContext *dec = ist_table[ost->source_index]->st->codec;
2310             if (!codec)
2311                 codec = avcodec_find_encoder(ost->st->codec->codec_id);
2312             if (!codec) {
2313                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2314                          ost->st->codec->codec_id, ost->file_index, ost->index);
2315                 ret = AVERROR(EINVAL);
2316                 goto dump_format;
2317             }
2318             if (dec->subtitle_header) {
2319                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2320                 if (!ost->st->codec->subtitle_header) {
2321                     ret = AVERROR(ENOMEM);
2322                     goto dump_format;
2323                 }
2324                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2325                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2326             }
2327             if (avcodec_open(ost->st->codec, codec) < 0) {
2328                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2329                         ost->file_index, ost->index);
2330                 ret = AVERROR(EINVAL);
2331                 goto dump_format;
2332             }
2333             extra_size += ost->st->codec->extradata_size;
2334         }
2335     }
2336
2337     /* open each decoder */
2338     for(i=0;i<nb_istreams;i++) {
2339         ist = ist_table[i];
2340         if (ist->decoding_needed) {
2341             AVCodec *codec = i < nb_input_codecs ? input_codecs[i] : NULL;
2342             if (!codec)
2343                 codec = avcodec_find_decoder(ist->st->codec->codec_id);
2344             if (!codec) {
2345                 snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
2346                         ist->st->codec->codec_id, ist->file_index, ist->index);
2347                 ret = AVERROR(EINVAL);
2348                 goto dump_format;
2349             }
2350
2351             /* update requested sample format for the decoder based on the
2352                corresponding encoder sample format */
2353             for (j = 0; j < nb_ostreams; j++) {
2354                 ost = ost_table[j];
2355                 if (ost->source_index == i) {
2356                     update_sample_fmt(ist->st->codec, codec, ost->st->codec);
2357                     break;
2358                 }
2359             }
2360
2361             if (avcodec_open(ist->st->codec, codec) < 0) {
2362                 snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
2363                         ist->file_index, ist->index);
2364                 ret = AVERROR(EINVAL);
2365                 goto dump_format;
2366             }
2367             //if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2368             //    ist->st->codec->flags |= CODEC_FLAG_REPEAT_FIELD;
2369         }
2370     }
2371
2372     /* init pts */
2373     for(i=0;i<nb_istreams;i++) {
2374         AVStream *st;
2375         ist = ist_table[i];
2376         st= ist->st;
2377         ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
2378         ist->next_pts = AV_NOPTS_VALUE;
2379         init_pts_correction(&ist->pts_ctx);
2380         ist->is_start = 1;
2381     }
2382
2383     /* set meta data information from input file if required */
2384     for (i=0;i<nb_meta_data_maps;i++) {
2385         AVFormatContext *files[2];
2386         AVMetadata      **meta[2];
2387         int j;
2388
2389 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
2390         if ((index) < 0 || (index) >= (nb_elems)) {\
2391             snprintf(error, sizeof(error), "Invalid %s index %d while processing metadata maps\n",\
2392                      (desc), (index));\
2393             ret = AVERROR(EINVAL);\
2394             goto dump_format;\
2395         }
2396
2397         int out_file_index = meta_data_maps[i][0].file;
2398         int in_file_index = meta_data_maps[i][1].file;
2399         if (in_file_index < 0 || out_file_index < 0)
2400             continue;
2401         METADATA_CHECK_INDEX(out_file_index, nb_output_files, "output file")
2402         METADATA_CHECK_INDEX(in_file_index, nb_input_files, "input file")
2403
2404         files[0] = output_files[out_file_index];
2405         files[1] = input_files[in_file_index];
2406
2407         for (j = 0; j < 2; j++) {
2408             AVMetaDataMap *map = &meta_data_maps[i][j];
2409
2410             switch (map->type) {
2411             case 'g':
2412                 meta[j] = &files[j]->metadata;
2413                 break;
2414             case 's':
2415                 METADATA_CHECK_INDEX(map->index, files[j]->nb_streams, "stream")
2416                 meta[j] = &files[j]->streams[map->index]->metadata;
2417                 break;
2418             case 'c':
2419                 METADATA_CHECK_INDEX(map->index, files[j]->nb_chapters, "chapter")
2420                 meta[j] = &files[j]->chapters[map->index]->metadata;
2421                 break;
2422             case 'p':
2423                 METADATA_CHECK_INDEX(map->index, files[j]->nb_programs, "program")
2424                 meta[j] = &files[j]->programs[map->index]->metadata;
2425                 break;
2426             }
2427         }
2428
2429         av_metadata_copy(meta[0], *meta[1], AV_METADATA_DONT_OVERWRITE);
2430     }
2431
2432     /* copy global metadata by default */
2433     if (metadata_global_autocopy) {
2434
2435         for (i = 0; i < nb_output_files; i++)
2436             av_metadata_copy(&output_files[i]->metadata, input_files[0]->metadata,
2437                              AV_METADATA_DONT_OVERWRITE);
2438     }
2439
2440     /* copy chapters according to chapter maps */
2441     for (i = 0; i < nb_chapter_maps; i++) {
2442         int infile  = chapter_maps[i].in_file;
2443         int outfile = chapter_maps[i].out_file;
2444
2445         if (infile < 0 || outfile < 0)
2446             continue;
2447         if (infile >= nb_input_files) {
2448             snprintf(error, sizeof(error), "Invalid input file index %d in chapter mapping.\n", infile);
2449             ret = AVERROR(EINVAL);
2450             goto dump_format;
2451         }
2452         if (outfile >= nb_output_files) {
2453             snprintf(error, sizeof(error), "Invalid output file index %d in chapter mapping.\n",outfile);
2454             ret = AVERROR(EINVAL);
2455             goto dump_format;
2456         }
2457         copy_chapters(infile, outfile);
2458     }
2459
2460     /* copy chapters from the first input file that has them*/
2461     if (!nb_chapter_maps)
2462         for (i = 0; i < nb_input_files; i++) {
2463             if (!input_files[i]->nb_chapters)
2464                 continue;
2465
2466             for (j = 0; j < nb_output_files; j++)
2467                 if ((ret = copy_chapters(i, j)) < 0)
2468                     goto dump_format;
2469             break;
2470         }
2471
2472     /* open files and write file headers */
2473     for(i=0;i<nb_output_files;i++) {
2474         os = output_files[i];
2475         if (av_write_header(os) < 0) {
2476             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2477             ret = AVERROR(EINVAL);
2478             goto dump_format;
2479         }
2480         if (strcmp(output_files[i]->oformat->name, "rtp")) {
2481             want_sdp = 0;
2482         }
2483     }
2484
2485  dump_format:
2486     /* dump the file output parameters - cannot be done before in case
2487        of stream copy */
2488     for(i=0;i<nb_output_files;i++) {
2489         av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2490     }
2491
2492     /* dump the stream mapping */
2493     if (verbose >= 0) {
2494         fprintf(stderr, "Stream mapping:\n");
2495         for(i=0;i<nb_ostreams;i++) {
2496             ost = ost_table[i];
2497             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2498                     ist_table[ost->source_index]->file_index,
2499                     ist_table[ost->source_index]->index,
2500                     ost->file_index,
2501                     ost->index);
2502             if (ost->sync_ist != ist_table[ost->source_index])
2503                 fprintf(stderr, " [sync #%d.%d]",
2504                         ost->sync_ist->file_index,
2505                         ost->sync_ist->index);
2506             fprintf(stderr, "\n");
2507         }
2508     }
2509
2510     if (ret) {
2511         fprintf(stderr, "%s\n", error);
2512         goto fail;
2513     }
2514
2515     if (want_sdp) {
2516         print_sdp(output_files, nb_output_files);
2517     }
2518
2519     if (verbose >= 0)
2520         fprintf(stderr, "Press ctrl-c to stop encoding\n");
2521     term_init();
2522
2523     timer_start = av_gettime();
2524
2525     for(; received_sigterm == 0;) {
2526         int file_index, ist_index;
2527         AVPacket pkt;
2528         double ipts_min;
2529         double opts_min;
2530
2531     redo:
2532         ipts_min= 1e100;
2533         opts_min= 1e100;
2534
2535         /* select the stream that we must read now by looking at the
2536            smallest output pts */
2537         file_index = -1;
2538         for(i=0;i<nb_ostreams;i++) {
2539             double ipts, opts;
2540             ost = ost_table[i];
2541             os = output_files[ost->file_index];
2542             ist = ist_table[ost->source_index];
2543             if(ist->is_past_recording_time || no_packet[ist->file_index])
2544                 continue;
2545                 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2546             ipts = (double)ist->pts;
2547             if (!file_table[ist->file_index].eof_reached){
2548                 if(ipts < ipts_min) {
2549                     ipts_min = ipts;
2550                     if(input_sync ) file_index = ist->file_index;
2551                 }
2552                 if(opts < opts_min) {
2553                     opts_min = opts;
2554                     if(!input_sync) file_index = ist->file_index;
2555                 }
2556             }
2557             if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
2558                 file_index= -1;
2559                 break;
2560             }
2561         }
2562         /* if none, if is finished */
2563         if (file_index < 0) {
2564             if(no_packet_count){
2565                 no_packet_count=0;
2566                 memset(no_packet, 0, sizeof(no_packet));
2567                 usleep(10000);
2568                 continue;
2569             }
2570             break;
2571         }
2572
2573         /* finish if limit size exhausted */
2574         if (limit_filesize != 0 && limit_filesize <= avio_tell(output_files[0]->pb))
2575             break;
2576
2577         /* read a frame from it and output it in the fifo */
2578         is = input_files[file_index];
2579         ret= av_read_frame(is, &pkt);
2580         if(ret == AVERROR(EAGAIN)){
2581             no_packet[file_index]=1;
2582             no_packet_count++;
2583             continue;
2584         }
2585         if (ret < 0) {
2586             file_table[file_index].eof_reached = 1;
2587             if (opt_shortest)
2588                 break;
2589             else
2590                 continue;
2591         }
2592
2593         no_packet_count=0;
2594         memset(no_packet, 0, sizeof(no_packet));
2595
2596         if (do_pkt_dump) {
2597             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2598                              is->streams[pkt.stream_index]);
2599         }
2600         /* the following test is needed in case new streams appear
2601            dynamically in stream : we ignore them */
2602         if (pkt.stream_index >= file_table[file_index].nb_streams)
2603             goto discard_packet;
2604         ist_index = file_table[file_index].ist_index + pkt.stream_index;
2605         ist = ist_table[ist_index];
2606         if (ist->discard)
2607             goto discard_packet;
2608
2609         if (pkt.dts != AV_NOPTS_VALUE)
2610             pkt.dts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2611         if (pkt.pts != AV_NOPTS_VALUE)
2612             pkt.pts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2613
2614         if (pkt.stream_index < nb_input_files_ts_scale[file_index]
2615             && input_files_ts_scale[file_index][pkt.stream_index]){
2616             if(pkt.pts != AV_NOPTS_VALUE)
2617                 pkt.pts *= input_files_ts_scale[file_index][pkt.stream_index];
2618             if(pkt.dts != AV_NOPTS_VALUE)
2619                 pkt.dts *= input_files_ts_scale[file_index][pkt.stream_index];
2620         }
2621
2622 //        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);
2623         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2624             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2625             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2626             int64_t delta= pkt_dts - ist->next_pts;
2627             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2628                 input_files_ts_offset[ist->file_index]-= delta;
2629                 if (verbose > 2)
2630                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n", delta, input_files_ts_offset[ist->file_index]);
2631                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2632                 if(pkt.pts != AV_NOPTS_VALUE)
2633                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2634             }
2635         }
2636
2637         /* finish if recording time exhausted */
2638         if (recording_time != INT64_MAX &&
2639             av_compare_ts(pkt.pts, ist->st->time_base, recording_time + start_time, (AVRational){1, 1000000}) >= 0) {
2640             ist->is_past_recording_time = 1;
2641             goto discard_packet;
2642         }
2643
2644         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->index, pkt.size);
2645         if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
2646
2647             if (verbose >= 0)
2648                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2649                         ist->file_index, ist->index);
2650             if (exit_on_error)
2651                 ffmpeg_exit(1);
2652             av_free_packet(&pkt);
2653             goto redo;
2654         }
2655
2656     discard_packet:
2657         av_free_packet(&pkt);
2658
2659         /* dump report by using the output first video and audio streams */
2660         print_report(output_files, ost_table, nb_ostreams, 0);
2661     }
2662
2663     /* at the end of stream, we must flush the decoder buffers */
2664     for(i=0;i<nb_istreams;i++) {
2665         ist = ist_table[i];
2666         if (ist->decoding_needed) {
2667             output_packet(ist, i, ost_table, nb_ostreams, NULL);
2668         }
2669     }
2670
2671     term_exit();
2672
2673     /* write the trailer if needed and close file */
2674     for(i=0;i<nb_output_files;i++) {
2675         os = output_files[i];
2676         av_write_trailer(os);
2677     }
2678
2679     /* dump report by using the first video and audio streams */
2680     print_report(output_files, ost_table, nb_ostreams, 1);
2681
2682     /* close each encoder */
2683     for(i=0;i<nb_ostreams;i++) {
2684         ost = ost_table[i];
2685         if (ost->encoding_needed) {
2686             av_freep(&ost->st->codec->stats_in);
2687             avcodec_close(ost->st->codec);
2688         }
2689 #if CONFIG_AVFILTER
2690         avfilter_graph_free(&ost->graph);
2691 #endif
2692     }
2693
2694     /* close each decoder */
2695     for(i=0;i<nb_istreams;i++) {
2696         ist = ist_table[i];
2697         if (ist->decoding_needed) {
2698             avcodec_close(ist->st->codec);
2699         }
2700     }
2701
2702     /* finished ! */
2703     ret = 0;
2704
2705  fail:
2706     av_freep(&bit_buffer);
2707     av_free(file_table);
2708
2709     if (ist_table) {
2710         for(i=0;i<nb_istreams;i++) {
2711             ist = ist_table[i];
2712             av_free(ist);
2713         }
2714         av_free(ist_table);
2715     }
2716     if (ost_table) {
2717         for(i=0;i<nb_ostreams;i++) {
2718             ost = ost_table[i];
2719             if (ost) {
2720                 if (ost->st->stream_copy)
2721                     av_freep(&ost->st->codec->extradata);
2722                 if (ost->logfile) {
2723                     fclose(ost->logfile);
2724                     ost->logfile = NULL;
2725                 }
2726                 av_fifo_free(ost->fifo); /* works even if fifo is not
2727                                              initialized but set to zero */
2728                 av_freep(&ost->st->codec->subtitle_header);
2729                 av_free(ost->pict_tmp.data[0]);
2730                 av_free(ost->forced_kf_pts);
2731                 if (ost->video_resample)
2732                     sws_freeContext(ost->img_resample_ctx);
2733                 if (ost->resample)
2734                     audio_resample_close(ost->resample);
2735                 if (ost->reformat_ctx)
2736                     av_audio_convert_free(ost->reformat_ctx);
2737                 av_free(ost);
2738             }
2739         }
2740         av_free(ost_table);
2741     }
2742     return ret;
2743 }
2744
2745 static void opt_format(const char *arg)
2746 {
2747     last_asked_format = arg;
2748 }
2749
2750 static void opt_video_rc_override_string(const char *arg)
2751 {
2752     video_rc_override_string = arg;
2753 }
2754
2755 static int opt_me_threshold(const char *opt, const char *arg)
2756 {
2757     me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2758     return 0;
2759 }
2760
2761 static int opt_verbose(const char *opt, const char *arg)
2762 {
2763     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2764     return 0;
2765 }
2766
2767 static int opt_frame_rate(const char *opt, const char *arg)
2768 {
2769     if (av_parse_video_rate(&frame_rate, arg) < 0) {
2770         fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2771         ffmpeg_exit(1);
2772     }
2773     return 0;
2774 }
2775
2776 static int opt_bitrate(const char *opt, const char *arg)
2777 {
2778     int codec_type = opt[0]=='a' ? AVMEDIA_TYPE_AUDIO : AVMEDIA_TYPE_VIDEO;
2779
2780     opt_default(opt, arg);
2781
2782     if (av_get_int(avcodec_opts[codec_type], "b", NULL) < 1000)
2783         fprintf(stderr, "WARNING: The bitrate parameter is set too low. It takes bits/s as argument, not kbits/s\n");
2784
2785     return 0;
2786 }
2787
2788 static int opt_frame_crop(const char *opt, const char *arg)
2789 {
2790     fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
2791     return AVERROR(EINVAL);
2792 }
2793
2794 static void opt_frame_size(const char *arg)
2795 {
2796     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2797         fprintf(stderr, "Incorrect frame size\n");
2798         ffmpeg_exit(1);
2799     }
2800 }
2801
2802 static int opt_pad(const char *opt, const char *arg) {
2803     fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2804     return -1;
2805 }
2806
2807 static void opt_frame_pix_fmt(const char *arg)
2808 {
2809     if (strcmp(arg, "list")) {
2810         frame_pix_fmt = av_get_pix_fmt(arg);
2811         if (frame_pix_fmt == PIX_FMT_NONE) {
2812             fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2813             ffmpeg_exit(1);
2814         }
2815     } else {
2816         show_pix_fmts();
2817         ffmpeg_exit(0);
2818     }
2819 }
2820
2821 static void opt_frame_aspect_ratio(const char *arg)
2822 {
2823     int x = 0, y = 0;
2824     double ar = 0;
2825     const char *p;
2826     char *end;
2827
2828     p = strchr(arg, ':');
2829     if (p) {
2830         x = strtol(arg, &end, 10);
2831         if (end == p)
2832             y = strtol(end+1, &end, 10);
2833         if (x > 0 && y > 0)
2834             ar = (double)x / (double)y;
2835     } else
2836         ar = strtod(arg, NULL);
2837
2838     if (!ar) {
2839         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2840         ffmpeg_exit(1);
2841     }
2842     frame_aspect_ratio = ar;
2843 }
2844
2845 static int opt_metadata(const char *opt, const char *arg)
2846 {
2847     char *mid= strchr(arg, '=');
2848
2849     if(!mid){
2850         fprintf(stderr, "Missing =\n");
2851         ffmpeg_exit(1);
2852     }
2853     *mid++= 0;
2854
2855     av_metadata_set2(&metadata, arg, mid, 0);
2856
2857     return 0;
2858 }
2859
2860 static int opt_qscale(const char *opt, const char *arg)
2861 {
2862     video_qscale = parse_number_or_die(opt, arg, OPT_FLOAT, 0, 255);
2863     if (video_qscale == 0) {
2864         fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2865         return AVERROR(EINVAL);
2866     }
2867     return 0;
2868 }
2869
2870 static int opt_top_field_first(const char *opt, const char *arg)
2871 {
2872     top_field_first = parse_number_or_die(opt, arg, OPT_INT, 0, 1);
2873     return 0;
2874 }
2875
2876 static int opt_thread_count(const char *opt, const char *arg)
2877 {
2878     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2879 #if !HAVE_THREADS
2880     if (verbose >= 0)
2881         fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2882 #endif
2883     return 0;
2884 }
2885
2886 static void opt_audio_sample_fmt(const char *arg)
2887 {
2888     if (strcmp(arg, "list")) {
2889         audio_sample_fmt = av_get_sample_fmt(arg);
2890         if (audio_sample_fmt == AV_SAMPLE_FMT_NONE) {
2891             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg);
2892             ffmpeg_exit(1);
2893         }
2894     } else {
2895         int i;
2896         char fmt_str[128];
2897         for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
2898             printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
2899         ffmpeg_exit(0);
2900     }
2901 }
2902
2903 static int opt_audio_rate(const char *opt, const char *arg)
2904 {
2905     audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2906     return 0;
2907 }
2908
2909 static int opt_audio_channels(const char *opt, const char *arg)
2910 {
2911     audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2912     return 0;
2913 }
2914
2915 static int opt_video_channel(const char *opt, const char *arg)
2916 {
2917     video_channel = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2918     return 0;
2919 }
2920
2921 static void opt_video_standard(const char *arg)
2922 {
2923     video_standard = av_strdup(arg);
2924 }
2925
2926 static void opt_codec(int *pstream_copy, char **pcodec_name,
2927                       int codec_type, const char *arg)
2928 {
2929     av_freep(pcodec_name);
2930     if (!strcmp(arg, "copy")) {
2931         *pstream_copy = 1;
2932     } else {
2933         *pcodec_name = av_strdup(arg);
2934     }
2935 }
2936
2937 static void opt_audio_codec(const char *arg)
2938 {
2939     opt_codec(&audio_stream_copy, &audio_codec_name, AVMEDIA_TYPE_AUDIO, arg);
2940 }
2941
2942 static void opt_video_codec(const char *arg)
2943 {
2944     opt_codec(&video_stream_copy, &video_codec_name, AVMEDIA_TYPE_VIDEO, arg);
2945 }
2946
2947 static void opt_subtitle_codec(const char *arg)
2948 {
2949     opt_codec(&subtitle_stream_copy, &subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, arg);
2950 }
2951
2952 static void opt_data_codec(const char *arg)
2953 {
2954     opt_codec(&data_stream_copy, &data_codec_name, AVMEDIA_TYPE_DATA, arg);
2955 }
2956
2957 static int opt_codec_tag(const char *opt, const char *arg)
2958 {
2959     char *tail;
2960     uint32_t *codec_tag;
2961
2962     codec_tag = !strcmp(opt, "atag") ? &audio_codec_tag :
2963                 !strcmp(opt, "vtag") ? &video_codec_tag :
2964                 !strcmp(opt, "stag") ? &subtitle_codec_tag : NULL;
2965     if (!codec_tag)
2966         return -1;
2967
2968     *codec_tag = strtol(arg, &tail, 0);
2969     if (!tail || *tail)
2970         *codec_tag = AV_RL32(arg);
2971
2972     return 0;
2973 }
2974
2975 static void opt_map(const char *arg)
2976 {
2977     AVStreamMap *m;
2978     char *p;
2979
2980     stream_maps = grow_array(stream_maps, sizeof(*stream_maps), &nb_stream_maps, nb_stream_maps + 1);
2981     m = &stream_maps[nb_stream_maps-1];
2982
2983     m->file_index = strtol(arg, &p, 0);
2984     if (*p)
2985         p++;
2986
2987     m->stream_index = strtol(p, &p, 0);
2988     if (*p) {
2989         p++;
2990         m->sync_file_index = strtol(p, &p, 0);
2991         if (*p)
2992             p++;
2993         m->sync_stream_index = strtol(p, &p, 0);
2994     } else {
2995         m->sync_file_index = m->file_index;
2996         m->sync_stream_index = m->stream_index;
2997     }
2998 }
2999
3000 static void parse_meta_type(char *arg, char *type, int *index, char **endptr)
3001 {
3002     *endptr = arg;
3003     if (*arg == ',') {
3004         *type = *(++arg);
3005         switch (*arg) {
3006         case 'g':
3007             break;
3008         case 's':
3009         case 'c':
3010         case 'p':
3011             *index = strtol(++arg, endptr, 0);
3012             break;
3013         default:
3014             fprintf(stderr, "Invalid metadata type %c.\n", *arg);
3015             ffmpeg_exit(1);
3016         }
3017     } else
3018         *type = 'g';
3019 }
3020
3021 static void opt_map_metadata(const char *arg)
3022 {
3023     AVMetaDataMap *m, *m1;
3024     char *p;
3025
3026     meta_data_maps = grow_array(meta_data_maps, sizeof(*meta_data_maps),
3027                                 &nb_meta_data_maps, nb_meta_data_maps + 1);
3028
3029     m = &meta_data_maps[nb_meta_data_maps - 1][0];
3030     m->file = strtol(arg, &p, 0);
3031     parse_meta_type(p, &m->type, &m->index, &p);
3032     if (*p)
3033         p++;
3034
3035     m1 = &meta_data_maps[nb_meta_data_maps - 1][1];
3036     m1->file = strtol(p, &p, 0);
3037     parse_meta_type(p, &m1->type, &m1->index, &p);
3038
3039     if (m->type == 'g' || m1->type == 'g')
3040         metadata_global_autocopy = 0;
3041     if (m->type == 's' || m1->type == 's')
3042         metadata_streams_autocopy = 0;
3043     if (m->type == 'c' || m1->type == 'c')
3044         metadata_chapters_autocopy = 0;
3045 }
3046
3047 static void opt_map_meta_data(const char *arg)
3048 {
3049     fprintf(stderr, "-map_meta_data is deprecated and will be removed soon. "
3050                     "Use -map_metadata instead.\n");
3051     opt_map_metadata(arg);
3052 }
3053
3054 static void opt_map_chapters(const char *arg)
3055 {
3056     AVChapterMap *c;
3057     char *p;
3058
3059     chapter_maps = grow_array(chapter_maps, sizeof(*chapter_maps), &nb_chapter_maps,
3060                               nb_chapter_maps + 1);
3061     c = &chapter_maps[nb_chapter_maps - 1];
3062     c->out_file = strtol(arg, &p, 0);
3063     if (*p)
3064         p++;
3065
3066     c->in_file = strtol(p, &p, 0);
3067 }
3068
3069 static void opt_input_ts_scale(const char *arg)
3070 {
3071     unsigned int stream;
3072     double scale;
3073     char *p;
3074
3075     stream = strtol(arg, &p, 0);
3076     if (*p)
3077         p++;
3078     scale= strtod(p, &p);
3079
3080     if(stream >= MAX_STREAMS)
3081         ffmpeg_exit(1);
3082
3083     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);
3084     input_files_ts_scale[nb_input_files][stream]= scale;
3085 }
3086
3087 static int opt_recording_time(const char *opt, const char *arg)
3088 {
3089     recording_time = parse_time_or_die(opt, arg, 1);
3090     return 0;
3091 }
3092
3093 static int opt_start_time(const char *opt, const char *arg)
3094 {
3095     start_time = parse_time_or_die(opt, arg, 1);
3096     return 0;
3097 }
3098
3099 static int opt_recording_timestamp(const char *opt, const char *arg)
3100 {
3101     recording_timestamp = parse_time_or_die(opt, arg, 0) / 1000000;
3102     return 0;
3103 }
3104
3105 static int opt_input_ts_offset(const char *opt, const char *arg)
3106 {
3107     input_ts_offset = parse_time_or_die(opt, arg, 1);
3108     return 0;
3109 }
3110
3111 static enum CodecID find_codec_or_die(const char *name, int type, int encoder, int strict)
3112 {
3113     const char *codec_string = encoder ? "encoder" : "decoder";
3114     AVCodec *codec;
3115
3116     if(!name)
3117         return CODEC_ID_NONE;
3118     codec = encoder ?
3119         avcodec_find_encoder_by_name(name) :
3120         avcodec_find_decoder_by_name(name);
3121     if(!codec) {
3122         fprintf(stderr, "Unknown %s '%s'\n", codec_string, name);
3123         ffmpeg_exit(1);
3124     }
3125     if(codec->type != type) {
3126         fprintf(stderr, "Invalid %s type '%s'\n", codec_string, name);
3127         ffmpeg_exit(1);
3128     }
3129     if(codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
3130        strict > FF_COMPLIANCE_EXPERIMENTAL) {
3131         fprintf(stderr, "%s '%s' is experimental and might produce bad "
3132                 "results.\nAdd '-strict experimental' if you want to use it.\n",
3133                 codec_string, codec->name);
3134         codec = encoder ?
3135             avcodec_find_encoder(codec->id) :
3136             avcodec_find_decoder(codec->id);
3137         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
3138             fprintf(stderr, "Or use the non experimental %s '%s'.\n",
3139                     codec_string, codec->name);
3140         ffmpeg_exit(1);
3141     }
3142     return codec->id;
3143 }
3144
3145 static void opt_input_file(const char *filename)
3146 {
3147     AVFormatContext *ic;
3148     AVFormatParameters params, *ap = &params;
3149     AVInputFormat *file_iformat = NULL;
3150     int err, i, ret, rfps, rfps_base;
3151     int64_t timestamp;
3152
3153     if (last_asked_format) {
3154         if (!(file_iformat = av_find_input_format(last_asked_format))) {
3155             fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
3156             ffmpeg_exit(1);
3157         }
3158         last_asked_format = NULL;
3159     }
3160
3161     if (!strcmp(filename, "-"))
3162         filename = "pipe:";
3163
3164     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3165                     !strcmp(filename, "/dev/stdin");
3166
3167     /* get default parameters from command line */
3168     ic = avformat_alloc_context();
3169     if (!ic) {
3170         print_error(filename, AVERROR(ENOMEM));
3171         ffmpeg_exit(1);
3172     }
3173
3174     memset(ap, 0, sizeof(*ap));
3175     ap->prealloced_context = 1;
3176     ap->sample_rate = audio_sample_rate;
3177     ap->channels = audio_channels;
3178     ap->time_base.den = frame_rate.num;
3179     ap->time_base.num = frame_rate.den;
3180     ap->width = frame_width;
3181     ap->height = frame_height;
3182     ap->pix_fmt = frame_pix_fmt;
3183    // ap->sample_fmt = audio_sample_fmt; //FIXME:not implemented in libavformat
3184     ap->channel = video_channel;
3185     ap->standard = video_standard;
3186
3187     set_context_opts(ic, avformat_opts, AV_OPT_FLAG_DECODING_PARAM, NULL);
3188
3189     ic->video_codec_id   =
3190         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0,
3191                           avcodec_opts[AVMEDIA_TYPE_VIDEO   ]->strict_std_compliance);
3192     ic->audio_codec_id   =
3193         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0,
3194                           avcodec_opts[AVMEDIA_TYPE_AUDIO   ]->strict_std_compliance);
3195     ic->subtitle_codec_id=
3196         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0,
3197                           avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->strict_std_compliance);
3198     ic->flags |= AVFMT_FLAG_NONBLOCK;
3199
3200     /* open the input file with generic libav function */
3201     err = av_open_input_file(&ic, filename, file_iformat, 0, ap);
3202     if (err < 0) {
3203         print_error(filename, err);
3204         ffmpeg_exit(1);
3205     }
3206     if(opt_programid) {
3207         int i, j;
3208         int found=0;
3209         for(i=0; i<ic->nb_streams; i++){
3210             ic->streams[i]->discard= AVDISCARD_ALL;
3211         }
3212         for(i=0; i<ic->nb_programs; i++){
3213             AVProgram *p= ic->programs[i];
3214             if(p->id != opt_programid){
3215                 p->discard = AVDISCARD_ALL;
3216             }else{
3217                 found=1;
3218                 for(j=0; j<p->nb_stream_indexes; j++){
3219                     ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
3220                 }
3221             }
3222         }
3223         if(!found){
3224             fprintf(stderr, "Specified program id not found\n");
3225             ffmpeg_exit(1);
3226         }
3227         opt_programid=0;
3228     }
3229
3230     ic->loop_input = loop_input;
3231
3232     /* Set AVCodecContext options so they will be seen by av_find_stream_info() */
3233     for (i = 0; i < ic->nb_streams; i++) {
3234         AVCodecContext *dec = ic->streams[i]->codec;
3235         switch (dec->codec_type) {
3236         case AVMEDIA_TYPE_AUDIO:
3237             set_context_opts(dec, avcodec_opts[AVMEDIA_TYPE_AUDIO],
3238                              AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM,
3239                              NULL);
3240             break;
3241         case AVMEDIA_TYPE_VIDEO:
3242             set_context_opts(dec, avcodec_opts[AVMEDIA_TYPE_VIDEO],
3243                              AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM,
3244                              NULL);
3245             break;
3246         }
3247     }
3248
3249     /* If not enough info to get the stream parameters, we decode the
3250        first frames to get it. (used in mpeg case for example) */
3251     ret = av_find_stream_info(ic);
3252     if (ret < 0 && verbose >= 0) {
3253         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3254         av_close_input_file(ic);
3255         ffmpeg_exit(1);
3256     }
3257
3258     timestamp = start_time;
3259     /* add the stream start time */
3260     if (ic->start_time != AV_NOPTS_VALUE)
3261         timestamp += ic->start_time;
3262
3263     /* if seeking requested, we execute it */
3264     if (start_time != 0) {
3265         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3266         if (ret < 0) {
3267             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3268                     filename, (double)timestamp / AV_TIME_BASE);
3269         }
3270         /* reset seek info */
3271         start_time = 0;
3272     }
3273
3274     /* update the current parameters so that they match the one of the input stream */
3275     for(i=0;i<ic->nb_streams;i++) {
3276         AVStream *st = ic->streams[i];
3277         AVCodecContext *dec = st->codec;
3278         dec->thread_count = thread_count;
3279         input_codecs = grow_array(input_codecs, sizeof(*input_codecs), &nb_input_codecs, nb_input_codecs + 1);
3280         switch (dec->codec_type) {
3281         case AVMEDIA_TYPE_AUDIO:
3282             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(audio_codec_name);
3283             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]);
3284             channel_layout    = dec->channel_layout;
3285             audio_channels    = dec->channels;
3286             audio_sample_rate = dec->sample_rate;
3287             audio_sample_fmt  = dec->sample_fmt;
3288             if(audio_disable)
3289                 st->discard= AVDISCARD_ALL;
3290             /* Note that av_find_stream_info can add more streams, and we
3291              * currently have no chance of setting up lowres decoding
3292              * early enough for them. */
3293             if (dec->lowres)
3294                 audio_sample_rate >>= dec->lowres;
3295             break;
3296         case AVMEDIA_TYPE_VIDEO:
3297             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(video_codec_name);
3298             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]);
3299             frame_height = dec->height;
3300             frame_width  = dec->width;
3301             frame_pix_fmt = dec->pix_fmt;
3302             rfps      = ic->streams[i]->r_frame_rate.num;
3303             rfps_base = ic->streams[i]->r_frame_rate.den;
3304             if (dec->lowres) {
3305                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3306                 frame_height >>= dec->lowres;
3307                 frame_width  >>= dec->lowres;
3308                 dec->height = frame_height;
3309                 dec->width  = frame_width;
3310             }
3311             if(me_threshold)
3312                 dec->debug |= FF_DEBUG_MV;
3313
3314             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3315
3316                 if (verbose >= 0)
3317                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3318                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3319
3320                     (float)rfps / rfps_base, rfps, rfps_base);
3321             }
3322             /* update the current frame rate to match the stream frame rate */
3323             frame_rate.num = rfps;
3324             frame_rate.den = rfps_base;
3325
3326             if(video_disable)
3327                 st->discard= AVDISCARD_ALL;
3328             else if(video_discard)
3329                 st->discard= video_discard;
3330             break;
3331         case AVMEDIA_TYPE_DATA:
3332             break;
3333         case AVMEDIA_TYPE_SUBTITLE:
3334             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(subtitle_codec_name);
3335             if(subtitle_disable)
3336                 st->discard = AVDISCARD_ALL;
3337             break;
3338         case AVMEDIA_TYPE_ATTACHMENT:
3339         case AVMEDIA_TYPE_UNKNOWN:
3340             break;
3341         default:
3342             abort();
3343         }
3344     }
3345
3346     input_files[nb_input_files] = ic;
3347     input_files_ts_offset[nb_input_files] = input_ts_offset - (copy_ts ? 0 : timestamp);
3348     /* dump the file content */
3349     if (verbose >= 0)
3350         av_dump_format(ic, nb_input_files, filename, 0);
3351
3352     nb_input_files++;
3353
3354     video_channel = 0;
3355
3356     av_freep(&video_codec_name);
3357     av_freep(&audio_codec_name);
3358     av_freep(&subtitle_codec_name);
3359     uninit_opts();
3360     init_opts();
3361 }
3362
3363 static void check_inputs(int *has_video_ptr,
3364                          int *has_audio_ptr,
3365                          int *has_subtitle_ptr,
3366                          int *has_data_ptr)
3367 {
3368     int has_video, has_audio, has_subtitle, has_data, i, j;
3369     AVFormatContext *ic;
3370
3371     has_video = 0;
3372     has_audio = 0;
3373     has_subtitle = 0;
3374     has_data = 0;
3375
3376     for(j=0;j<nb_input_files;j++) {
3377         ic = input_files[j];
3378         for(i=0;i<ic->nb_streams;i++) {
3379             AVCodecContext *enc = ic->streams[i]->codec;
3380             switch(enc->codec_type) {
3381             case AVMEDIA_TYPE_AUDIO:
3382                 has_audio = 1;
3383                 break;
3384             case AVMEDIA_TYPE_VIDEO:
3385                 has_video = 1;
3386                 break;
3387             case AVMEDIA_TYPE_SUBTITLE:
3388                 has_subtitle = 1;
3389                 break;
3390             case AVMEDIA_TYPE_DATA:
3391             case AVMEDIA_TYPE_ATTACHMENT:
3392             case AVMEDIA_TYPE_UNKNOWN:
3393                 has_data = 1;
3394                 break;
3395             default:
3396                 abort();
3397             }
3398         }
3399     }
3400     *has_video_ptr = has_video;
3401     *has_audio_ptr = has_audio;
3402     *has_subtitle_ptr = has_subtitle;
3403     *has_data_ptr = has_data;
3404 }
3405
3406 static void new_video_stream(AVFormatContext *oc, int file_idx)
3407 {
3408     AVStream *st;
3409     AVOutputStream *ost;
3410     AVCodecContext *video_enc;
3411     enum CodecID codec_id = CODEC_ID_NONE;
3412     AVCodec *codec= NULL;
3413
3414     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3415     if (!st) {
3416         fprintf(stderr, "Could not alloc stream\n");
3417         ffmpeg_exit(1);
3418     }
3419     ost = new_output_stream(oc, file_idx);
3420
3421     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3422     if(!video_stream_copy){
3423         if (video_codec_name) {
3424             codec_id = find_codec_or_die(video_codec_name, AVMEDIA_TYPE_VIDEO, 1,
3425                                          avcodec_opts[AVMEDIA_TYPE_VIDEO]->strict_std_compliance);
3426             codec = avcodec_find_encoder_by_name(video_codec_name);
3427             output_codecs[nb_output_codecs-1] = codec;
3428         } else {
3429             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_VIDEO);
3430             codec = avcodec_find_encoder(codec_id);
3431         }
3432
3433         ost->frame_aspect_ratio = frame_aspect_ratio;
3434         frame_aspect_ratio = 0;
3435 #if CONFIG_AVFILTER
3436         ost->avfilter= vfilters;
3437         vfilters = NULL;
3438 #endif
3439     }
3440
3441     avcodec_get_context_defaults3(st->codec, codec);
3442     ost->bitstream_filters = video_bitstream_filters;
3443     video_bitstream_filters= NULL;
3444
3445     st->codec->thread_count= thread_count;
3446
3447     video_enc = st->codec;
3448
3449     if(video_codec_tag)
3450         video_enc->codec_tag= video_codec_tag;
3451
3452     if(oc->oformat->flags & AVFMT_GLOBALHEADER) {
3453         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3454         avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3455     }
3456
3457     if (video_stream_copy) {
3458         st->stream_copy = 1;
3459         video_enc->codec_type = AVMEDIA_TYPE_VIDEO;
3460         video_enc->sample_aspect_ratio =
3461         st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3462     } else {
3463         const char *p;
3464         int i;
3465         AVRational fps= frame_rate.num ? frame_rate : (AVRational){25,1};
3466
3467         video_enc->codec_id = codec_id;
3468         set_context_opts(video_enc, avcodec_opts[AVMEDIA_TYPE_VIDEO], AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3469
3470         if (codec && codec->supported_framerates && !force_fps)
3471             fps = codec->supported_framerates[av_find_nearest_q_idx(fps, codec->supported_framerates)];
3472         video_enc->time_base.den = fps.num;
3473         video_enc->time_base.num = fps.den;
3474
3475         video_enc->width = frame_width;
3476         video_enc->height = frame_height;
3477         video_enc->pix_fmt = frame_pix_fmt;
3478         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3479
3480         choose_pixel_fmt(st, codec);
3481
3482         if (intra_only)
3483             video_enc->gop_size = 0;
3484         if (video_qscale || same_quality) {
3485             video_enc->flags |= CODEC_FLAG_QSCALE;
3486             video_enc->global_quality=
3487                 st->quality = FF_QP2LAMBDA * video_qscale;
3488         }
3489
3490         if(intra_matrix)
3491             video_enc->intra_matrix = intra_matrix;
3492         if(inter_matrix)
3493             video_enc->inter_matrix = inter_matrix;
3494
3495         p= video_rc_override_string;
3496         for(i=0; p; i++){
3497             int start, end, q;
3498             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3499             if(e!=3){
3500                 fprintf(stderr, "error parsing rc_override\n");
3501                 ffmpeg_exit(1);
3502             }
3503             video_enc->rc_override=
3504                 av_realloc(video_enc->rc_override,
3505                            sizeof(RcOverride)*(i+1));
3506             video_enc->rc_override[i].start_frame= start;
3507             video_enc->rc_override[i].end_frame  = end;
3508             if(q>0){
3509                 video_enc->rc_override[i].qscale= q;
3510                 video_enc->rc_override[i].quality_factor= 1.0;
3511             }
3512             else{
3513                 video_enc->rc_override[i].qscale= 0;
3514                 video_enc->rc_override[i].quality_factor= -q/100.0;
3515             }
3516             p= strchr(p, '/');
3517             if(p) p++;
3518         }
3519         video_enc->rc_override_count=i;
3520         if (!video_enc->rc_initial_buffer_occupancy)
3521             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3522         video_enc->me_threshold= me_threshold;
3523         video_enc->intra_dc_precision= intra_dc_precision - 8;
3524
3525         if (do_psnr)
3526             video_enc->flags|= CODEC_FLAG_PSNR;
3527
3528         /* two pass mode */
3529         if (do_pass) {
3530             if (do_pass == 1) {
3531                 video_enc->flags |= CODEC_FLAG_PASS1;
3532             } else {
3533                 video_enc->flags |= CODEC_FLAG_PASS2;
3534             }
3535         }
3536
3537         if (forced_key_frames)
3538             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3539     }
3540     if (video_language) {
3541         av_metadata_set2(&st->metadata, "language", video_language, 0);
3542         av_freep(&video_language);
3543     }
3544
3545     /* reset some key parameters */
3546     video_disable = 0;
3547     av_freep(&video_codec_name);
3548     av_freep(&forced_key_frames);
3549     video_stream_copy = 0;
3550     frame_pix_fmt = PIX_FMT_NONE;
3551 }
3552
3553 static void new_audio_stream(AVFormatContext *oc, int file_idx)
3554 {
3555     AVStream *st;
3556     AVOutputStream *ost;
3557     AVCodec *codec= NULL;
3558     AVCodecContext *audio_enc;
3559     enum CodecID codec_id = CODEC_ID_NONE;
3560
3561     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3562     if (!st) {
3563         fprintf(stderr, "Could not alloc stream\n");
3564         ffmpeg_exit(1);
3565     }
3566     ost = new_output_stream(oc, file_idx);
3567
3568     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3569     if(!audio_stream_copy){
3570         if (audio_codec_name) {
3571             codec_id = find_codec_or_die(audio_codec_name, AVMEDIA_TYPE_AUDIO, 1,
3572                                          avcodec_opts[AVMEDIA_TYPE_AUDIO]->strict_std_compliance);
3573             codec = avcodec_find_encoder_by_name(audio_codec_name);
3574             output_codecs[nb_output_codecs-1] = codec;
3575         } else {
3576             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_AUDIO);
3577             codec = avcodec_find_encoder(codec_id);
3578         }
3579     }
3580
3581     avcodec_get_context_defaults3(st->codec, codec);
3582
3583     ost->bitstream_filters = audio_bitstream_filters;
3584     audio_bitstream_filters= NULL;
3585
3586     st->codec->thread_count= thread_count;
3587
3588     audio_enc = st->codec;
3589     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3590
3591     if(audio_codec_tag)
3592         audio_enc->codec_tag= audio_codec_tag;
3593
3594     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3595         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3596         avcodec_opts[AVMEDIA_TYPE_AUDIO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3597     }
3598     if (audio_stream_copy) {
3599         st->stream_copy = 1;
3600         audio_enc->channels = audio_channels;
3601         audio_enc->sample_rate = audio_sample_rate;
3602     } else {
3603         audio_enc->codec_id = codec_id;
3604         set_context_opts(audio_enc, avcodec_opts[AVMEDIA_TYPE_AUDIO], AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3605
3606         if (audio_qscale > QSCALE_NONE) {
3607             audio_enc->flags |= CODEC_FLAG_QSCALE;
3608             audio_enc->global_quality = st->quality = FF_QP2LAMBDA * audio_qscale;
3609         }
3610         audio_enc->channels = audio_channels;
3611         audio_enc->sample_fmt = audio_sample_fmt;
3612         audio_enc->sample_rate = audio_sample_rate;
3613         audio_enc->channel_layout = channel_layout;
3614         if (av_get_channel_layout_nb_channels(channel_layout) != audio_channels)
3615             audio_enc->channel_layout = 0;
3616         choose_sample_fmt(st, codec);
3617         choose_sample_rate(st, codec);
3618     }
3619     audio_enc->time_base= (AVRational){1, audio_sample_rate};
3620     if (audio_language) {
3621         av_metadata_set2(&st->metadata, "language", audio_language, 0);
3622         av_freep(&audio_language);
3623     }
3624
3625     /* reset some key parameters */
3626     audio_disable = 0;
3627     av_freep(&audio_codec_name);
3628     audio_stream_copy = 0;
3629 }
3630
3631 static void new_data_stream(AVFormatContext *oc, int file_idx)
3632 {
3633     AVStream *st;
3634     AVOutputStream *ost;
3635     AVCodec *codec=NULL;
3636     AVCodecContext *data_enc;
3637
3638     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3639     if (!st) {
3640         fprintf(stderr, "Could not alloc stream\n");
3641         ffmpeg_exit(1);
3642     }
3643     ost = new_output_stream(oc, file_idx);
3644     data_enc = st->codec;
3645     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3646     if (!data_stream_copy) {
3647         fprintf(stderr, "Data stream encoding not supported yet (only streamcopy)\n");
3648         ffmpeg_exit(1);