avconv: reindent.
[ffmpeg.git] / avconv.c
1 /*
2  * avconv main
3  * Copyright (c) 2000-2011 The libav developers.
4  *
5  * This file is part of Libav.
6  *
7  * Libav is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * Libav is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with Libav; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21
22 #include "config.h"
23 #include <ctype.h>
24 #include <string.h>
25 #include <math.h>
26 #include <stdlib.h>
27 #include <errno.h>
28 #include <signal.h>
29 #include <limits.h>
30 #include <unistd.h>
31 #include "libavformat/avformat.h"
32 #include "libavdevice/avdevice.h"
33 #include "libswscale/swscale.h"
34 #include "libavutil/opt.h"
35 #include "libavcodec/audioconvert.h"
36 #include "libavutil/audioconvert.h"
37 #include "libavutil/parseutils.h"
38 #include "libavutil/samplefmt.h"
39 #include "libavutil/colorspace.h"
40 #include "libavutil/fifo.h"
41 #include "libavutil/intreadwrite.h"
42 #include "libavutil/dict.h"
43 #include "libavutil/mathematics.h"
44 #include "libavutil/pixdesc.h"
45 #include "libavutil/avstring.h"
46 #include "libavutil/libm.h"
47 #include "libavformat/os_support.h"
48
49 #if CONFIG_AVFILTER
50 # include "libavfilter/avfilter.h"
51 # include "libavfilter/avfiltergraph.h"
52 # include "libavfilter/vsrc_buffer.h"
53 #endif
54
55 #if HAVE_SYS_RESOURCE_H
56 #include <sys/types.h>
57 #include <sys/time.h>
58 #include <sys/resource.h>
59 #elif HAVE_GETPROCESSTIMES
60 #include <windows.h>
61 #endif
62 #if HAVE_GETPROCESSMEMORYINFO
63 #include <windows.h>
64 #include <psapi.h>
65 #endif
66
67 #if HAVE_SYS_SELECT_H
68 #include <sys/select.h>
69 #endif
70
71 #include <time.h>
72
73 #include "cmdutils.h"
74
75 #include "libavutil/avassert.h"
76
77 const char program_name[] = "avconv";
78 const int program_birth_year = 2000;
79
80 /* select an input stream for an output stream */
81 typedef struct StreamMap {
82     int disabled;           /** 1 is this mapping is disabled by a negative map */
83     int file_index;
84     int stream_index;
85     int sync_file_index;
86     int sync_stream_index;
87 } StreamMap;
88
89 /**
90  * select an input file for an output file
91  */
92 typedef struct MetadataMap {
93     int  file;      //< file index
94     char type;      //< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
95     int  index;     //< stream/chapter/program number
96 } MetadataMap;
97
98 static const OptionDef options[];
99
100 static const char *last_asked_format = NULL;
101 static AVDictionary *ts_scale;
102
103 static StreamMap *stream_maps = NULL;
104 static int nb_stream_maps;
105
106 static AVDictionary *codec_names;
107
108 /* first item specifies output metadata, second is input */
109 static MetadataMap (*meta_data_maps)[2] = NULL;
110 static int nb_meta_data_maps;
111 static int metadata_global_autocopy   = 1;
112 static int metadata_streams_autocopy  = 1;
113 static int metadata_chapters_autocopy = 1;
114
115 static int chapters_input_file = INT_MAX;
116
117 /* indexed by output file stream index */
118 static int *streamid_map = NULL;
119 static int nb_streamid_map = 0;
120
121 static int frame_width  = 0;
122 static int frame_height = 0;
123 static float frame_aspect_ratio = 0;
124 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
125 static enum AVSampleFormat audio_sample_fmt = AV_SAMPLE_FMT_NONE;
126 static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
127 static AVRational frame_rate;
128 static float video_qscale = 0;
129 static uint16_t *intra_matrix = NULL;
130 static uint16_t *inter_matrix = NULL;
131 static const char *video_rc_override_string=NULL;
132 static int video_disable = 0;
133 static int video_discard = 0;
134 static unsigned int video_codec_tag = 0;
135 static char *video_language = NULL;
136 static int same_quant = 0;
137 static int do_deinterlace = 0;
138 static int top_field_first = -1;
139 static int me_threshold = 0;
140 static int intra_dc_precision = 8;
141 static int qp_hist = 0;
142 #if CONFIG_AVFILTER
143 static char *vfilters = NULL;
144 #endif
145
146 static int intra_only = 0;
147 static int audio_sample_rate = 0;
148 #define QSCALE_NONE -99999
149 static float audio_qscale = QSCALE_NONE;
150 static int audio_disable = 0;
151 static int audio_channels = 0;
152 static unsigned int audio_codec_tag = 0;
153 static char *audio_language = NULL;
154
155 static int subtitle_disable = 0;
156 static char *subtitle_language = NULL;
157 static unsigned int subtitle_codec_tag = 0;
158
159 static int data_disable = 0;
160 static unsigned int data_codec_tag = 0;
161
162 static float mux_preload= 0.5;
163 static float mux_max_delay= 0.7;
164
165 static int64_t recording_time = INT64_MAX;
166 static int64_t start_time = 0;
167 static int64_t input_ts_offset = 0;
168 static int file_overwrite = 0;
169 static AVDictionary *metadata;
170 static int do_benchmark = 0;
171 static int do_hex_dump = 0;
172 static int do_pkt_dump = 0;
173 static int do_psnr = 0;
174 static int do_pass = 0;
175 static char *pass_logfilename_prefix = NULL;
176 static int video_sync_method= -1;
177 static int audio_sync_method= 0;
178 static float audio_drift_threshold= 0.1;
179 static int copy_ts= 0;
180 static int copy_tb;
181 static int opt_shortest = 0;
182 static char *vstats_filename;
183 static FILE *vstats_file;
184 static int opt_programid = 0;
185 static int copy_initial_nonkeyframes = 0;
186
187 static int rate_emu = 0;
188
189 static int audio_volume = 256;
190
191 static int exit_on_error = 0;
192 static int using_stdin = 0;
193 static int verbose = 1;
194 static int thread_count= 1;
195 static int64_t video_size = 0;
196 static int64_t audio_size = 0;
197 static int64_t extra_size = 0;
198 static int nb_frames_dup = 0;
199 static int nb_frames_drop = 0;
200 static int input_sync;
201 static uint64_t limit_filesize = 0;
202 static int force_fps = 0;
203 static char *forced_key_frames = NULL;
204
205 static float dts_delta_threshold = 10;
206
207 static int64_t timer_start;
208
209 static uint8_t *audio_buf;
210 static uint8_t *audio_out;
211 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
212
213 static short *samples;
214
215 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
216 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
217 static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL;
218
219 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
220
221 struct InputStream;
222
223 typedef struct OutputStream {
224     int file_index;          /* file index */
225     int index;               /* stream index in the output file */
226     int source_index;        /* InputStream index */
227     AVStream *st;            /* stream in the output file */
228     int encoding_needed;     /* true if encoding needed for this stream */
229     int frame_number;
230     /* input pts and corresponding output pts
231        for A/V sync */
232     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
233     struct InputStream *sync_ist; /* input stream to sync against */
234     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
235     AVBitStreamFilterContext *bitstream_filters;
236     AVCodec *enc;
237
238     /* video only */
239     int video_resample;
240     AVFrame pict_tmp;      /* temporary image for resampling */
241     struct SwsContext *img_resample_ctx; /* for image resampling */
242     int resample_height;
243     int resample_width;
244     int resample_pix_fmt;
245     AVRational frame_rate;
246
247     float frame_aspect_ratio;
248
249     /* forced key frames */
250     int64_t *forced_kf_pts;
251     int forced_kf_count;
252     int forced_kf_index;
253
254     /* audio only */
255     int audio_resample;
256     ReSampleContext *resample; /* for audio resampling */
257     int resample_sample_fmt;
258     int resample_channels;
259     int resample_sample_rate;
260     int reformat_pair;
261     AVAudioConvert *reformat_ctx;
262     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
263     FILE *logfile;
264
265 #if CONFIG_AVFILTER
266     AVFilterContext *output_video_filter;
267     AVFilterContext *input_video_filter;
268     AVFilterBufferRef *picref;
269     char *avfilter;
270     AVFilterGraph *graph;
271 #endif
272
273    int sws_flags;
274    AVDictionary *opts;
275    int is_past_recording_time;
276 } OutputStream;
277
278 typedef struct InputStream {
279     int file_index;
280     AVStream *st;
281     int discard;             /* true if stream data should be discarded */
282     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
283     AVCodec *dec;
284
285     int64_t       start;     /* time when read started */
286     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
287                                 is not defined */
288     int64_t       pts;       /* current pts */
289     PtsCorrectionContext pts_ctx;
290     double ts_scale;
291     int is_start;            /* is 1 at the start and after a discontinuity */
292     int showed_multi_packet_warning;
293     AVDictionary *opts;
294 } InputStream;
295
296 typedef struct InputFile {
297     AVFormatContext *ctx;
298     int eof_reached;      /* true if eof reached */
299     int ist_index;        /* index of first stream in ist_table */
300     int buffer_size;      /* current total buffer size */
301     int64_t ts_offset;
302 } InputFile;
303
304 typedef struct OutputFile {
305     AVFormatContext *ctx;
306     AVDictionary *opts;
307     int ost_index;       /* index of the first stream in output_streams */
308     int64_t recording_time; /* desired length of the resulting file in microseconds */
309     int64_t start_time;     /* start time in microseconds */
310 } OutputFile;
311
312 static InputStream *input_streams = NULL;
313 static int         nb_input_streams = 0;
314 static InputFile   *input_files   = NULL;
315 static int         nb_input_files   = 0;
316
317 static OutputStream *output_streams = NULL;
318 static int        nb_output_streams = 0;
319 static OutputFile   *output_files   = NULL;
320 static int        nb_output_files   = 0;
321
322 #if CONFIG_AVFILTER
323
324 static int configure_video_filters(InputStream *ist, OutputStream *ost)
325 {
326     AVFilterContext *last_filter, *filter;
327     /** filter graph containing all filters including input & output */
328     AVCodecContext *codec = ost->st->codec;
329     AVCodecContext *icodec = ist->st->codec;
330     FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
331     AVRational sample_aspect_ratio;
332     char args[255];
333     int ret;
334
335     ost->graph = avfilter_graph_alloc();
336
337     if (ist->st->sample_aspect_ratio.num){
338         sample_aspect_ratio = ist->st->sample_aspect_ratio;
339     }else
340         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
341
342     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
343              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
344              sample_aspect_ratio.num, sample_aspect_ratio.den);
345
346     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
347                                        "src", args, NULL, ost->graph);
348     if (ret < 0)
349         return ret;
350     ret = avfilter_graph_create_filter(&ost->output_video_filter, &ffsink,
351                                        "out", NULL, &ffsink_ctx, ost->graph);
352     if (ret < 0)
353         return ret;
354     last_filter = ost->input_video_filter;
355
356     if (codec->width  != icodec->width || codec->height != icodec->height) {
357         snprintf(args, 255, "%d:%d:flags=0x%X",
358                  codec->width,
359                  codec->height,
360                  ost->sws_flags);
361         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
362                                                 NULL, args, NULL, ost->graph)) < 0)
363             return ret;
364         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
365             return ret;
366         last_filter = filter;
367     }
368
369     snprintf(args, sizeof(args), "flags=0x%X", ost->sws_flags);
370     ost->graph->scale_sws_opts = av_strdup(args);
371
372     if (ost->avfilter) {
373         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
374         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
375
376         outputs->name    = av_strdup("in");
377         outputs->filter_ctx = last_filter;
378         outputs->pad_idx = 0;
379         outputs->next    = NULL;
380
381         inputs->name    = av_strdup("out");
382         inputs->filter_ctx = ost->output_video_filter;
383         inputs->pad_idx = 0;
384         inputs->next    = NULL;
385
386         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, inputs, outputs, NULL)) < 0)
387             return ret;
388         av_freep(&ost->avfilter);
389     } else {
390         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
391             return ret;
392     }
393
394     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
395         return ret;
396
397     codec->width  = ost->output_video_filter->inputs[0]->w;
398     codec->height = ost->output_video_filter->inputs[0]->h;
399     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
400         ost->frame_aspect_ratio ? // overriden by the -aspect cli option
401         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
402         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
403
404     return 0;
405 }
406 #endif /* CONFIG_AVFILTER */
407
408 static void term_exit(void)
409 {
410     av_log(NULL, AV_LOG_QUIET, "");
411 }
412
413 static volatile int received_sigterm = 0;
414 static volatile int received_nb_signals = 0;
415
416 static void
417 sigterm_handler(int sig)
418 {
419     received_sigterm = sig;
420     received_nb_signals++;
421     term_exit();
422 }
423
424 static void term_init(void)
425 {
426     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
427     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
428 #ifdef SIGXCPU
429     signal(SIGXCPU, sigterm_handler);
430 #endif
431 }
432
433 static int decode_interrupt_cb(void)
434 {
435     return received_nb_signals > 1;
436 }
437
438 static int exit_program(int ret)
439 {
440     int i;
441
442     /* close files */
443     for(i=0;i<nb_output_files;i++) {
444         AVFormatContext *s = output_files[i].ctx;
445         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
446             avio_close(s->pb);
447         avformat_free_context(s);
448         av_dict_free(&output_files[i].opts);
449     }
450     for(i=0;i<nb_input_files;i++) {
451         av_close_input_file(input_files[i].ctx);
452     }
453     for (i = 0; i < nb_input_streams; i++)
454         av_dict_free(&input_streams[i].opts);
455
456     av_free(intra_matrix);
457     av_free(inter_matrix);
458
459     if (vstats_file)
460         fclose(vstats_file);
461     av_free(vstats_filename);
462
463     av_free(streamid_map);
464     av_free(meta_data_maps);
465
466     av_freep(&input_streams);
467     av_freep(&input_files);
468     av_freep(&output_streams);
469     av_freep(&output_files);
470
471     uninit_opts();
472     av_free(audio_buf);
473     av_free(audio_out);
474     allocated_audio_buf_size= allocated_audio_out_size= 0;
475     av_free(samples);
476
477 #if CONFIG_AVFILTER
478     avfilter_uninit();
479 #endif
480
481     if (received_sigterm) {
482         fprintf(stderr,
483             "Received signal %d: terminating.\n",
484             (int) received_sigterm);
485         exit (255);
486     }
487
488     exit(ret); /* not all OS-es handle main() return value */
489     return ret;
490 }
491
492 static void assert_avoptions(AVDictionary *m)
493 {
494     AVDictionaryEntry *t;
495     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
496         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
497         exit_program(1);
498     }
499 }
500
501 static void assert_codec_experimental(AVCodecContext *c, int encoder)
502 {
503     const char *codec_string = encoder ? "encoder" : "decoder";
504     AVCodec *codec;
505     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
506         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
507         av_log(NULL, AV_LOG_ERROR, "%s '%s' is experimental and might produce bad "
508                 "results.\nAdd '-strict experimental' if you want to use it.\n",
509                 codec_string, c->codec->name);
510         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
511         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
512             av_log(NULL, AV_LOG_ERROR, "Or use the non experimental %s '%s'.\n",
513                    codec_string, codec->name);
514         exit_program(1);
515     }
516 }
517
518 /* similar to ff_dynarray_add() and av_fast_realloc() */
519 static void *grow_array(void *array, int elem_size, int *size, int new_size)
520 {
521     if (new_size >= INT_MAX / elem_size) {
522         fprintf(stderr, "Array too big.\n");
523         exit_program(1);
524     }
525     if (*size < new_size) {
526         uint8_t *tmp = av_realloc(array, new_size*elem_size);
527         if (!tmp) {
528             fprintf(stderr, "Could not alloc buffer.\n");
529             exit_program(1);
530         }
531         memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
532         *size = new_size;
533         return tmp;
534     }
535     return array;
536 }
537
538 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
539 {
540     if(codec && codec->sample_fmts){
541         const enum AVSampleFormat *p= codec->sample_fmts;
542         for(; *p!=-1; p++){
543             if(*p == st->codec->sample_fmt)
544                 break;
545         }
546         if (*p == -1) {
547             av_log(NULL, AV_LOG_WARNING,
548                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
549                    av_get_sample_fmt_name(st->codec->sample_fmt),
550                    codec->name,
551                    av_get_sample_fmt_name(codec->sample_fmts[0]));
552             st->codec->sample_fmt = codec->sample_fmts[0];
553         }
554     }
555 }
556
557 /**
558  * Update the requested input sample format based on the output sample format.
559  * This is currently only used to request float output from decoders which
560  * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
561  * Ideally this will be removed in the future when decoders do not do format
562  * conversion and only output in their native format.
563  */
564 static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
565                               AVCodecContext *enc)
566 {
567     /* if sample formats match or a decoder sample format has already been
568        requested, just return */
569     if (enc->sample_fmt == dec->sample_fmt ||
570         dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
571         return;
572
573     /* if decoder supports more than one output format */
574     if (dec_codec && dec_codec->sample_fmts &&
575         dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
576         dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
577         const enum AVSampleFormat *p;
578         int min_dec = -1, min_inc = -1;
579
580         /* find a matching sample format in the encoder */
581         for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
582             if (*p == enc->sample_fmt) {
583                 dec->request_sample_fmt = *p;
584                 return;
585             } else if (*p > enc->sample_fmt) {
586                 min_inc = FFMIN(min_inc, *p - enc->sample_fmt);
587             } else
588                 min_dec = FFMIN(min_dec, enc->sample_fmt - *p);
589         }
590
591         /* if none match, provide the one that matches quality closest */
592         dec->request_sample_fmt = min_inc > 0 ? enc->sample_fmt + min_inc :
593                                   enc->sample_fmt - min_dec;
594     }
595 }
596
597 static void choose_sample_rate(AVStream *st, AVCodec *codec)
598 {
599     if(codec && codec->supported_samplerates){
600         const int *p= codec->supported_samplerates;
601         int best=0;
602         int best_dist=INT_MAX;
603         for(; *p; p++){
604             int dist= abs(st->codec->sample_rate - *p);
605             if(dist < best_dist){
606                 best_dist= dist;
607                 best= *p;
608             }
609         }
610         if(best_dist){
611             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
612         }
613         st->codec->sample_rate= best;
614     }
615 }
616
617 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
618 {
619     if(codec && codec->pix_fmts){
620         const enum PixelFormat *p= codec->pix_fmts;
621         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
622             if(st->codec->codec_id==CODEC_ID_MJPEG){
623                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
624             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
625                 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};
626             }
627         }
628         for(; *p!=-1; p++){
629             if(*p == st->codec->pix_fmt)
630                 break;
631         }
632         if (*p == -1) {
633             if(st->codec->pix_fmt != PIX_FMT_NONE)
634                 av_log(NULL, AV_LOG_WARNING,
635                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
636                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
637                         codec->name,
638                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
639             st->codec->pix_fmt = codec->pix_fmts[0];
640         }
641     }
642 }
643
644 static double
645 get_sync_ipts(const OutputStream *ost)
646 {
647     const InputStream *ist = ost->sync_ist;
648     OutputFile *of = &output_files[ost->file_index];
649     return (double)(ist->pts - of->start_time)/AV_TIME_BASE;
650 }
651
652 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
653     int ret;
654
655     while(bsfc){
656         AVPacket new_pkt= *pkt;
657         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
658                                           &new_pkt.data, &new_pkt.size,
659                                           pkt->data, pkt->size,
660                                           pkt->flags & AV_PKT_FLAG_KEY);
661         if(a>0){
662             av_free_packet(pkt);
663             new_pkt.destruct= av_destruct_packet;
664         } else if(a<0){
665             fprintf(stderr, "%s failed for stream %d, codec %s",
666                     bsfc->filter->name, pkt->stream_index,
667                     avctx->codec ? avctx->codec->name : "copy");
668             print_error("", a);
669             if (exit_on_error)
670                 exit_program(1);
671         }
672         *pkt= new_pkt;
673
674         bsfc= bsfc->next;
675     }
676
677     ret= av_interleaved_write_frame(s, pkt);
678     if(ret < 0){
679         print_error("av_interleaved_write_frame()", ret);
680         exit_program(1);
681     }
682 }
683
684 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
685
686 static void do_audio_out(AVFormatContext *s,
687                          OutputStream *ost,
688                          InputStream *ist,
689                          unsigned char *buf, int size)
690 {
691     uint8_t *buftmp;
692     int64_t audio_out_size, audio_buf_size;
693     int64_t allocated_for_size= size;
694
695     int size_out, frame_bytes, ret, resample_changed;
696     AVCodecContext *enc= ost->st->codec;
697     AVCodecContext *dec= ist->st->codec;
698     int osize = av_get_bytes_per_sample(enc->sample_fmt);
699     int isize = av_get_bytes_per_sample(dec->sample_fmt);
700     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
701
702 need_realloc:
703     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
704     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
705     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
706     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
707     audio_buf_size*= osize*enc->channels;
708
709     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
710     if(coded_bps > 8*osize)
711         audio_out_size= audio_out_size * coded_bps / (8*osize);
712     audio_out_size += FF_MIN_BUFFER_SIZE;
713
714     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
715         fprintf(stderr, "Buffer sizes too large\n");
716         exit_program(1);
717     }
718
719     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
720     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
721     if (!audio_buf || !audio_out){
722         fprintf(stderr, "Out of memory in do_audio_out\n");
723         exit_program(1);
724     }
725
726     if (enc->channels != dec->channels || enc->sample_rate != dec->sample_rate)
727         ost->audio_resample = 1;
728
729     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
730                        ost->resample_channels    != dec->channels   ||
731                        ost->resample_sample_rate != dec->sample_rate;
732
733     if ((ost->audio_resample && !ost->resample) || resample_changed) {
734         if (resample_changed) {
735             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",
736                    ist->file_index, ist->st->index,
737                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
738                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
739             ost->resample_sample_fmt  = dec->sample_fmt;
740             ost->resample_channels    = dec->channels;
741             ost->resample_sample_rate = dec->sample_rate;
742             if (ost->resample)
743                 audio_resample_close(ost->resample);
744         }
745         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
746         if (audio_sync_method <= 1 &&
747             ost->resample_sample_fmt  == enc->sample_fmt &&
748             ost->resample_channels    == enc->channels   &&
749             ost->resample_sample_rate == enc->sample_rate) {
750             ost->resample = NULL;
751             ost->audio_resample = 0;
752         } else if (ost->audio_resample) {
753             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
754                 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
755             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
756                                                    enc->sample_rate, dec->sample_rate,
757                                                    enc->sample_fmt,  dec->sample_fmt,
758                                                    16, 10, 0, 0.8);
759             if (!ost->resample) {
760                 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
761                         dec->channels, dec->sample_rate,
762                         enc->channels, enc->sample_rate);
763                 exit_program(1);
764             }
765         }
766     }
767
768 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
769     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
770         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
771         if (ost->reformat_ctx)
772             av_audio_convert_free(ost->reformat_ctx);
773         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
774                                                    dec->sample_fmt, 1, NULL, 0);
775         if (!ost->reformat_ctx) {
776             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
777                 av_get_sample_fmt_name(dec->sample_fmt),
778                 av_get_sample_fmt_name(enc->sample_fmt));
779             exit_program(1);
780         }
781         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
782     }
783
784     if(audio_sync_method){
785         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
786                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
787         double idelta= delta*dec->sample_rate / enc->sample_rate;
788         int byte_delta= ((int)idelta)*2*dec->channels;
789
790         //FIXME resample delay
791         if(fabs(delta) > 50){
792             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
793                 if(byte_delta < 0){
794                     byte_delta= FFMAX(byte_delta, -size);
795                     size += byte_delta;
796                     buf  -= byte_delta;
797                     if(verbose > 2)
798                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
799                     if(!size)
800                         return;
801                     ist->is_start=0;
802                 }else{
803                     static uint8_t *input_tmp= NULL;
804                     input_tmp= av_realloc(input_tmp, byte_delta + size);
805
806                     if(byte_delta > allocated_for_size - size){
807                         allocated_for_size= byte_delta + (int64_t)size;
808                         goto need_realloc;
809                     }
810                     ist->is_start=0;
811
812                     memset(input_tmp, 0, byte_delta);
813                     memcpy(input_tmp + byte_delta, buf, size);
814                     buf= input_tmp;
815                     size += byte_delta;
816                     if(verbose > 2)
817                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
818                 }
819             }else if(audio_sync_method>1){
820                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
821                 av_assert0(ost->audio_resample);
822                 if(verbose > 2)
823                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
824 //                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));
825                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
826             }
827         }
828     }else
829         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
830                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
831
832     if (ost->audio_resample) {
833         buftmp = audio_buf;
834         size_out = audio_resample(ost->resample,
835                                   (short *)buftmp, (short *)buf,
836                                   size / (dec->channels * isize));
837         size_out = size_out * enc->channels * osize;
838     } else {
839         buftmp = buf;
840         size_out = size;
841     }
842
843     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
844         const void *ibuf[6]= {buftmp};
845         void *obuf[6]= {audio_buf};
846         int istride[6]= {isize};
847         int ostride[6]= {osize};
848         int len= size_out/istride[0];
849         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
850             printf("av_audio_convert() failed\n");
851             if (exit_on_error)
852                 exit_program(1);
853             return;
854         }
855         buftmp = audio_buf;
856         size_out = len*osize;
857     }
858
859     /* now encode as many frames as possible */
860     if (enc->frame_size > 1) {
861         /* output resampled raw samples */
862         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
863             fprintf(stderr, "av_fifo_realloc2() failed\n");
864             exit_program(1);
865         }
866         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
867
868         frame_bytes = enc->frame_size * osize * enc->channels;
869
870         while (av_fifo_size(ost->fifo) >= frame_bytes) {
871             AVPacket pkt;
872             av_init_packet(&pkt);
873
874             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
875
876             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
877
878             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
879                                        (short *)audio_buf);
880             if (ret < 0) {
881                 fprintf(stderr, "Audio encoding failed\n");
882                 exit_program(1);
883             }
884             audio_size += ret;
885             pkt.stream_index= ost->index;
886             pkt.data= audio_out;
887             pkt.size= ret;
888             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
889                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
890             pkt.flags |= AV_PKT_FLAG_KEY;
891             write_frame(s, &pkt, enc, ost->bitstream_filters);
892
893             ost->sync_opts += enc->frame_size;
894         }
895     } else {
896         AVPacket pkt;
897         av_init_packet(&pkt);
898
899         ost->sync_opts += size_out / (osize * enc->channels);
900
901         /* output a pcm frame */
902         /* determine the size of the coded buffer */
903         size_out /= osize;
904         if (coded_bps)
905             size_out = size_out*coded_bps/8;
906
907         if(size_out > audio_out_size){
908             fprintf(stderr, "Internal error, buffer size too small\n");
909             exit_program(1);
910         }
911
912         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
913         ret = avcodec_encode_audio(enc, audio_out, size_out,
914                                    (short *)buftmp);
915         if (ret < 0) {
916             fprintf(stderr, "Audio encoding failed\n");
917             exit_program(1);
918         }
919         audio_size += ret;
920         pkt.stream_index= ost->index;
921         pkt.data= audio_out;
922         pkt.size= ret;
923         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
924             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
925         pkt.flags |= AV_PKT_FLAG_KEY;
926         write_frame(s, &pkt, enc, ost->bitstream_filters);
927     }
928 }
929
930 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
931 {
932     AVCodecContext *dec;
933     AVPicture *picture2;
934     AVPicture picture_tmp;
935     uint8_t *buf = 0;
936
937     dec = ist->st->codec;
938
939     /* deinterlace : must be done before any resize */
940     if (do_deinterlace) {
941         int size;
942
943         /* create temporary picture */
944         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
945         buf = av_malloc(size);
946         if (!buf)
947             return;
948
949         picture2 = &picture_tmp;
950         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
951
952         if(avpicture_deinterlace(picture2, picture,
953                                  dec->pix_fmt, dec->width, dec->height) < 0) {
954             /* if error, do not deinterlace */
955             fprintf(stderr, "Deinterlacing failed\n");
956             av_free(buf);
957             buf = NULL;
958             picture2 = picture;
959         }
960     } else {
961         picture2 = picture;
962     }
963
964     if (picture != picture2)
965         *picture = *picture2;
966     *bufp = buf;
967 }
968
969 /* we begin to correct av delay at this threshold */
970 #define AV_DELAY_MAX 0.100
971
972 static void do_subtitle_out(AVFormatContext *s,
973                             OutputStream *ost,
974                             InputStream *ist,
975                             AVSubtitle *sub,
976                             int64_t pts)
977 {
978     static uint8_t *subtitle_out = NULL;
979     int subtitle_out_max_size = 1024 * 1024;
980     int subtitle_out_size, nb, i;
981     AVCodecContext *enc;
982     AVPacket pkt;
983
984     if (pts == AV_NOPTS_VALUE) {
985         fprintf(stderr, "Subtitle packets must have a pts\n");
986         if (exit_on_error)
987             exit_program(1);
988         return;
989     }
990
991     enc = ost->st->codec;
992
993     if (!subtitle_out) {
994         subtitle_out = av_malloc(subtitle_out_max_size);
995     }
996
997     /* Note: DVB subtitle need one packet to draw them and one other
998        packet to clear them */
999     /* XXX: signal it in the codec context ? */
1000     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1001         nb = 2;
1002     else
1003         nb = 1;
1004
1005     for(i = 0; i < nb; i++) {
1006         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1007         // start_display_time is required to be 0
1008         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1009         sub->end_display_time -= sub->start_display_time;
1010         sub->start_display_time = 0;
1011         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1012                                                     subtitle_out_max_size, sub);
1013         if (subtitle_out_size < 0) {
1014             fprintf(stderr, "Subtitle encoding failed\n");
1015             exit_program(1);
1016         }
1017
1018         av_init_packet(&pkt);
1019         pkt.stream_index = ost->index;
1020         pkt.data = subtitle_out;
1021         pkt.size = subtitle_out_size;
1022         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1023         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1024             /* XXX: the pts correction is handled here. Maybe handling
1025                it in the codec would be better */
1026             if (i == 0)
1027                 pkt.pts += 90 * sub->start_display_time;
1028             else
1029                 pkt.pts += 90 * sub->end_display_time;
1030         }
1031         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1032     }
1033 }
1034
1035 static int bit_buffer_size= 1024*256;
1036 static uint8_t *bit_buffer= NULL;
1037
1038 static void do_video_resample(OutputStream *ost,
1039                               InputStream *ist,
1040                               AVFrame *in_picture,
1041                               AVFrame **out_picture)
1042 {
1043     int resample_changed = 0;
1044     AVCodecContext *dec = ist->st->codec;
1045     *out_picture = in_picture;
1046
1047     resample_changed = ost->resample_width   != dec->width  ||
1048                        ost->resample_height  != dec->height ||
1049                        ost->resample_pix_fmt != dec->pix_fmt;
1050
1051     if (resample_changed) {
1052         av_log(NULL, AV_LOG_INFO,
1053                "Input stream #%d.%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1054                ist->file_index, ist->st->index,
1055                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1056                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1057         if(!ost->video_resample)
1058             ost->video_resample = 1;
1059     }
1060
1061 #if !CONFIG_AVFILTER
1062     if (ost->video_resample) {
1063         *out_picture = &ost->pict_tmp;
1064         if (resample_changed) {
1065             /* initialize a new scaler context */
1066             sws_freeContext(ost->img_resample_ctx);
1067             ost->img_resample_ctx = sws_getContext(
1068                 ist->st->codec->width,
1069                 ist->st->codec->height,
1070                 ist->st->codec->pix_fmt,
1071                 ost->st->codec->width,
1072                 ost->st->codec->height,
1073                 ost->st->codec->pix_fmt,
1074                 ost->sws_flags, NULL, NULL, NULL);
1075             if (ost->img_resample_ctx == NULL) {
1076                 fprintf(stderr, "Cannot get resampling context\n");
1077                 exit_program(1);
1078             }
1079         }
1080         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1081               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1082     }
1083 #else
1084     if (resample_changed) {
1085         avfilter_graph_free(&ost->graph);
1086         if (configure_video_filters(ist, ost)) {
1087             fprintf(stderr, "Error reinitialising filters!\n");
1088             exit_program(1);
1089         }
1090     }
1091 #endif
1092     if (resample_changed) {
1093         ost->resample_width   = dec->width;
1094         ost->resample_height  = dec->height;
1095         ost->resample_pix_fmt = dec->pix_fmt;
1096     }
1097 }
1098
1099
1100 static void do_video_out(AVFormatContext *s,
1101                          OutputStream *ost,
1102                          InputStream *ist,
1103                          AVFrame *in_picture,
1104                          int *frame_size, float quality)
1105 {
1106     int nb_frames, i, ret, format_video_sync;
1107     AVFrame *final_picture;
1108     AVCodecContext *enc, *dec;
1109     double sync_ipts;
1110
1111     enc = ost->st->codec;
1112     dec = ist->st->codec;
1113
1114     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1115
1116     /* by default, we output a single frame */
1117     nb_frames = 1;
1118
1119     *frame_size = 0;
1120
1121     format_video_sync = video_sync_method;
1122     if (format_video_sync < 0)
1123         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? 2 : 1;
1124
1125     if (format_video_sync) {
1126         double vdelta = sync_ipts - ost->sync_opts;
1127         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1128         if (vdelta < -1.1)
1129             nb_frames = 0;
1130         else if (format_video_sync == 2) {
1131             if(vdelta<=-0.6){
1132                 nb_frames=0;
1133             }else if(vdelta>0.6)
1134                 ost->sync_opts= lrintf(sync_ipts);
1135         }else if (vdelta > 1.1)
1136             nb_frames = lrintf(vdelta);
1137 //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);
1138         if (nb_frames == 0){
1139             ++nb_frames_drop;
1140             if (verbose>2)
1141                 fprintf(stderr, "*** drop!\n");
1142         }else if (nb_frames > 1) {
1143             nb_frames_dup += nb_frames - 1;
1144             if (verbose>2)
1145                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1146         }
1147     }else
1148         ost->sync_opts= lrintf(sync_ipts);
1149
1150     nb_frames= FFMIN(nb_frames, max_frames[AVMEDIA_TYPE_VIDEO] - ost->frame_number);
1151     if (nb_frames <= 0)
1152         return;
1153
1154     do_video_resample(ost, ist, in_picture, &final_picture);
1155
1156     /* duplicates frame if needed */
1157     for(i=0;i<nb_frames;i++) {
1158         AVPacket pkt;
1159         av_init_packet(&pkt);
1160         pkt.stream_index= ost->index;
1161
1162         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1163             /* raw pictures are written as AVPicture structure to
1164                avoid any copies. We support temorarily the older
1165                method. */
1166             AVFrame* old_frame = enc->coded_frame;
1167             enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
1168             pkt.data= (uint8_t *)final_picture;
1169             pkt.size=  sizeof(AVPicture);
1170             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1171             pkt.flags |= AV_PKT_FLAG_KEY;
1172
1173             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1174             enc->coded_frame = old_frame;
1175         } else {
1176             AVFrame big_picture;
1177
1178             big_picture= *final_picture;
1179             /* better than nothing: use input picture interlaced
1180                settings */
1181             big_picture.interlaced_frame = in_picture->interlaced_frame;
1182             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1183                 if(top_field_first == -1)
1184                     big_picture.top_field_first = in_picture->top_field_first;
1185                 else
1186                     big_picture.top_field_first = top_field_first;
1187             }
1188
1189             /* handles same_quant here. This is not correct because it may
1190                not be a global option */
1191             big_picture.quality = quality;
1192             if(!me_threshold)
1193                 big_picture.pict_type = 0;
1194 //            big_picture.pts = AV_NOPTS_VALUE;
1195             big_picture.pts= ost->sync_opts;
1196 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1197 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1198             if (ost->forced_kf_index < ost->forced_kf_count &&
1199                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1200                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1201                 ost->forced_kf_index++;
1202             }
1203             ret = avcodec_encode_video(enc,
1204                                        bit_buffer, bit_buffer_size,
1205                                        &big_picture);
1206             if (ret < 0) {
1207                 fprintf(stderr, "Video encoding failed\n");
1208                 exit_program(1);
1209             }
1210
1211             if(ret>0){
1212                 pkt.data= bit_buffer;
1213                 pkt.size= ret;
1214                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1215                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1216 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1217    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1218    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1219
1220                 if(enc->coded_frame->key_frame)
1221                     pkt.flags |= AV_PKT_FLAG_KEY;
1222                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1223                 *frame_size = ret;
1224                 video_size += ret;
1225                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1226                 //        enc->frame_number-1, ret, enc->pict_type);
1227                 /* if two pass, output log */
1228                 if (ost->logfile && enc->stats_out) {
1229                     fprintf(ost->logfile, "%s", enc->stats_out);
1230                 }
1231             }
1232         }
1233         ost->sync_opts++;
1234         ost->frame_number++;
1235     }
1236 }
1237
1238 static double psnr(double d){
1239     return -10.0*log(d)/log(10.0);
1240 }
1241
1242 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1243                            int frame_size)
1244 {
1245     AVCodecContext *enc;
1246     int frame_number;
1247     double ti1, bitrate, avg_bitrate;
1248
1249     /* this is executed just the first time do_video_stats is called */
1250     if (!vstats_file) {
1251         vstats_file = fopen(vstats_filename, "w");
1252         if (!vstats_file) {
1253             perror("fopen");
1254             exit_program(1);
1255         }
1256     }
1257
1258     enc = ost->st->codec;
1259     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1260         frame_number = ost->frame_number;
1261         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1262         if (enc->flags&CODEC_FLAG_PSNR)
1263             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1264
1265         fprintf(vstats_file,"f_size= %6d ", frame_size);
1266         /* compute pts value */
1267         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1268         if (ti1 < 0.01)
1269             ti1 = 0.01;
1270
1271         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1272         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1273         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1274             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1275         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1276     }
1277 }
1278
1279 static void print_report(OutputFile *output_files,
1280                          OutputStream *ost_table, int nb_ostreams,
1281                          int is_last_report)
1282 {
1283     char buf[1024];
1284     OutputStream *ost;
1285     AVFormatContext *oc;
1286     int64_t total_size;
1287     AVCodecContext *enc;
1288     int frame_number, vid, i;
1289     double bitrate, ti1, pts;
1290     static int64_t last_time = -1;
1291     static int qp_histogram[52];
1292
1293     if (!is_last_report) {
1294         int64_t cur_time;
1295         /* display the report every 0.5 seconds */
1296         cur_time = av_gettime();
1297         if (last_time == -1) {
1298             last_time = cur_time;
1299             return;
1300         }
1301         if ((cur_time - last_time) < 500000)
1302             return;
1303         last_time = cur_time;
1304     }
1305
1306
1307     oc = output_files[0].ctx;
1308
1309     total_size = avio_size(oc->pb);
1310     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1311         total_size= avio_tell(oc->pb);
1312
1313     buf[0] = '\0';
1314     ti1 = 1e10;
1315     vid = 0;
1316     for(i=0;i<nb_ostreams;i++) {
1317         float q = -1;
1318         ost = &ost_table[i];
1319         enc = ost->st->codec;
1320         if (!ost->st->stream_copy && enc->coded_frame)
1321             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1322         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1323             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1324         }
1325         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1326             float t = (av_gettime()-timer_start) / 1000000.0;
1327
1328             frame_number = ost->frame_number;
1329             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1330                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1331             if(is_last_report)
1332                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1333             if(qp_hist){
1334                 int j;
1335                 int qp = lrintf(q);
1336                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1337                     qp_histogram[qp]++;
1338                 for(j=0; j<32; j++)
1339                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1340             }
1341             if (enc->flags&CODEC_FLAG_PSNR){
1342                 int j;
1343                 double error, error_sum=0;
1344                 double scale, scale_sum=0;
1345                 char type[3]= {'Y','U','V'};
1346                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1347                 for(j=0; j<3; j++){
1348                     if(is_last_report){
1349                         error= enc->error[j];
1350                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1351                     }else{
1352                         error= enc->coded_frame->error[j];
1353                         scale= enc->width*enc->height*255.0*255.0;
1354                     }
1355                     if(j) scale/=4;
1356                     error_sum += error;
1357                     scale_sum += scale;
1358                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1359                 }
1360                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1361             }
1362             vid = 1;
1363         }
1364         /* compute min output value */
1365         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1366         if ((pts < ti1) && (pts > 0))
1367             ti1 = pts;
1368     }
1369     if (ti1 < 0.01)
1370         ti1 = 0.01;
1371
1372     if (verbose > 0 || is_last_report) {
1373         bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1374
1375         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1376             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1377             (double)total_size / 1024, ti1, bitrate);
1378
1379         if (nb_frames_dup || nb_frames_drop)
1380           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1381                   nb_frames_dup, nb_frames_drop);
1382
1383         if (verbose >= 0)
1384             fprintf(stderr, "%s    \r", buf);
1385
1386         fflush(stderr);
1387     }
1388
1389     if (is_last_report && verbose >= 0){
1390         int64_t raw= audio_size + video_size + extra_size;
1391         fprintf(stderr, "\n");
1392         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1393                 video_size/1024.0,
1394                 audio_size/1024.0,
1395                 extra_size/1024.0,
1396                 100.0*(total_size - raw)/raw
1397         );
1398     }
1399 }
1400
1401 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1402 {
1403     int fill_char = 0x00;
1404     if (sample_fmt == AV_SAMPLE_FMT_U8)
1405         fill_char = 0x80;
1406     memset(buf, fill_char, size);
1407 }
1408
1409 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1410 static int output_packet(InputStream *ist, int ist_index,
1411                          OutputStream *ost_table, int nb_ostreams,
1412                          const AVPacket *pkt)
1413 {
1414     AVFormatContext *os;
1415     OutputStream *ost;
1416     int ret, i;
1417     int got_output;
1418     AVFrame picture;
1419     void *buffer_to_free = NULL;
1420     static unsigned int samples_size= 0;
1421     AVSubtitle subtitle, *subtitle_to_free;
1422     int64_t pkt_pts = AV_NOPTS_VALUE;
1423 #if CONFIG_AVFILTER
1424     int frame_available;
1425 #endif
1426     float quality;
1427
1428     AVPacket avpkt;
1429     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1430
1431     if(ist->next_pts == AV_NOPTS_VALUE)
1432         ist->next_pts= ist->pts;
1433
1434     if (pkt == NULL) {
1435         /* EOF handling */
1436         av_init_packet(&avpkt);
1437         avpkt.data = NULL;
1438         avpkt.size = 0;
1439         goto handle_eof;
1440     } else {
1441         avpkt = *pkt;
1442     }
1443
1444     if(pkt->dts != AV_NOPTS_VALUE)
1445         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1446     if(pkt->pts != AV_NOPTS_VALUE)
1447         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1448
1449     //while we have more to decode or while the decoder did output something on EOF
1450     while (avpkt.size > 0 || (!pkt && got_output)) {
1451         uint8_t *data_buf, *decoded_data_buf;
1452         int data_size, decoded_data_size;
1453     handle_eof:
1454         ist->pts= ist->next_pts;
1455
1456         if(avpkt.size && avpkt.size != pkt->size &&
1457            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1458             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1459             ist->showed_multi_packet_warning=1;
1460         }
1461
1462         /* decode the packet if needed */
1463         decoded_data_buf = NULL; /* fail safe */
1464         decoded_data_size= 0;
1465         data_buf  = avpkt.data;
1466         data_size = avpkt.size;
1467         subtitle_to_free = NULL;
1468         if (ist->decoding_needed) {
1469             switch(ist->st->codec->codec_type) {
1470             case AVMEDIA_TYPE_AUDIO:{
1471                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1472                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1473                     av_free(samples);
1474                     samples= av_malloc(samples_size);
1475                 }
1476                 decoded_data_size= samples_size;
1477                     /* XXX: could avoid copy if PCM 16 bits with same
1478                        endianness as CPU */
1479                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1480                                             &avpkt);
1481                 if (ret < 0)
1482                     return ret;
1483                 avpkt.data += ret;
1484                 avpkt.size -= ret;
1485                 data_size   = ret;
1486                 got_output  = decoded_data_size > 0;
1487                 /* Some bug in mpeg audio decoder gives */
1488                 /* decoded_data_size < 0, it seems they are overflows */
1489                 if (!got_output) {
1490                     /* no audio frame */
1491                     continue;
1492                 }
1493                 decoded_data_buf = (uint8_t *)samples;
1494                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1495                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1496                 break;}
1497             case AVMEDIA_TYPE_VIDEO:
1498                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1499                     /* XXX: allocate picture correctly */
1500                     avcodec_get_frame_defaults(&picture);
1501                     avpkt.pts = pkt_pts;
1502                     avpkt.dts = ist->pts;
1503                     pkt_pts = AV_NOPTS_VALUE;
1504
1505                     ret = avcodec_decode_video2(ist->st->codec,
1506                                                 &picture, &got_output, &avpkt);
1507                     quality = same_quant ? picture.quality : 0;
1508                     if (ret < 0)
1509                         return ret;
1510                     if (!got_output) {
1511                         /* no picture yet */
1512                         goto discard_packet;
1513                     }
1514                     ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, picture.pkt_pts, picture.pkt_dts);
1515                     if (ist->st->codec->time_base.num != 0) {
1516                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1517                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1518                                           ist->st->codec->time_base.num * ticks) /
1519                             ist->st->codec->time_base.den;
1520                     }
1521                     avpkt.size = 0;
1522                     buffer_to_free = NULL;
1523                     pre_process_video_frame(ist, (AVPicture *)&picture, &buffer_to_free);
1524                     break;
1525             case AVMEDIA_TYPE_SUBTITLE:
1526                 ret = avcodec_decode_subtitle2(ist->st->codec,
1527                                                &subtitle, &got_output, &avpkt);
1528                 if (ret < 0)
1529                     return ret;
1530                 if (!got_output) {
1531                     goto discard_packet;
1532                 }
1533                 subtitle_to_free = &subtitle;
1534                 avpkt.size = 0;
1535                 break;
1536             default:
1537                 return -1;
1538             }
1539         } else {
1540             switch(ist->st->codec->codec_type) {
1541             case AVMEDIA_TYPE_AUDIO:
1542                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1543                     ist->st->codec->sample_rate;
1544                 break;
1545             case AVMEDIA_TYPE_VIDEO:
1546                 if (ist->st->codec->time_base.num != 0) {
1547                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1548                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1549                                       ist->st->codec->time_base.num * ticks) /
1550                         ist->st->codec->time_base.den;
1551                 }
1552                 break;
1553             }
1554             ret = avpkt.size;
1555             avpkt.size = 0;
1556         }
1557
1558         // preprocess audio (volume)
1559         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1560             if (audio_volume != 256) {
1561                 short *volp;
1562                 volp = samples;
1563                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1564                     int v = ((*volp) * audio_volume + 128) >> 8;
1565                     if (v < -32768) v = -32768;
1566                     if (v >  32767) v = 32767;
1567                     *volp++ = v;
1568                 }
1569             }
1570         }
1571
1572         /* frame rate emulation */
1573         if (rate_emu) {
1574             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1575             int64_t now = av_gettime() - ist->start;
1576             if (pts > now)
1577                 usleep(pts - now);
1578         }
1579         /* if output time reached then transcode raw format,
1580            encode packets and output them */
1581         for (i = 0; i < nb_ostreams; i++) {
1582             OutputFile *of = &output_files[ost_table[i].file_index];
1583             int frame_size;
1584
1585             ost = &ost_table[i];
1586             if (ost->source_index != ist_index)
1587                 continue;
1588
1589             if (of->start_time && ist->pts < of->start_time)
1590                 continue;
1591
1592             if (of->recording_time != INT64_MAX &&
1593                 av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1594                               (AVRational){1, 1000000}) >= 0) {
1595                 ost->is_past_recording_time = 1;
1596                 continue;
1597             }
1598
1599 #if CONFIG_AVFILTER
1600             if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1601                 ost->input_video_filter) {
1602                 AVRational sar;
1603                 if (ist->st->sample_aspect_ratio.num)
1604                     sar = ist->st->sample_aspect_ratio;
1605                 else
1606                     sar = ist->st->codec->sample_aspect_ratio;
1607                 av_vsrc_buffer_add_frame(ost->input_video_filter, &picture, ist->pts, sar);
1608             }
1609             frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1610                 !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1611             while (frame_available) {
1612                 AVRational ist_pts_tb;
1613                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter)
1614                     get_filtered_video_frame(ost->output_video_filter, &picture, &ost->picref, &ist_pts_tb);
1615                 if (ost->picref)
1616                     ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1617 #endif
1618                 os = output_files[ost->file_index].ctx;
1619
1620                 /* set the input output pts pairs */
1621                 //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
1622
1623                 if (ost->encoding_needed) {
1624                     av_assert0(ist->decoding_needed);
1625                     switch(ost->st->codec->codec_type) {
1626                     case AVMEDIA_TYPE_AUDIO:
1627                         do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1628                         break;
1629                     case AVMEDIA_TYPE_VIDEO:
1630 #if CONFIG_AVFILTER
1631                         if (ost->picref->video && !ost->frame_aspect_ratio)
1632                             ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
1633 #endif
1634                         do_video_out(os, ost, ist, &picture, &frame_size,
1635                                      same_quant ? quality : ost->st->codec->global_quality);
1636                         if (vstats_filename && frame_size)
1637                             do_video_stats(os, ost, frame_size);
1638                         break;
1639                     case AVMEDIA_TYPE_SUBTITLE:
1640                         do_subtitle_out(os, ost, ist, &subtitle,
1641                                         pkt->pts);
1642                         break;
1643                     default:
1644                         abort();
1645                     }
1646                 } else {
1647                     AVFrame avframe; //FIXME/XXX remove this
1648                     AVPacket opkt;
1649                     int64_t ost_tb_start_time= av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1650
1651                     av_init_packet(&opkt);
1652
1653                     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1654 #if !CONFIG_AVFILTER
1655                         continue;
1656 #else
1657                         goto cont;
1658 #endif
1659
1660                     /* no reencoding needed : output the packet directly */
1661                     /* force the input stream PTS */
1662
1663                     avcodec_get_frame_defaults(&avframe);
1664                     ost->st->codec->coded_frame= &avframe;
1665                     avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1666
1667                     if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1668                         audio_size += data_size;
1669                     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1670                         video_size += data_size;
1671                         ost->sync_opts++;
1672                     }
1673
1674                     opkt.stream_index= ost->index;
1675                     if(pkt->pts != AV_NOPTS_VALUE)
1676                         opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1677                     else
1678                         opkt.pts= AV_NOPTS_VALUE;
1679
1680                     if (pkt->dts == AV_NOPTS_VALUE)
1681                         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1682                     else
1683                         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1684                     opkt.dts -= ost_tb_start_time;
1685
1686                     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1687                     opkt.flags= pkt->flags;
1688
1689                     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1690                     if(   ost->st->codec->codec_id != CODEC_ID_H264
1691                        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1692                        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1693                        ) {
1694                         if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1695                             opkt.destruct= av_destruct_packet;
1696                     } else {
1697                         opkt.data = data_buf;
1698                         opkt.size = data_size;
1699                     }
1700
1701                     write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1702                     ost->st->codec->frame_number++;
1703                     ost->frame_number++;
1704                     av_free_packet(&opkt);
1705                 }
1706 #if CONFIG_AVFILTER
1707                 cont:
1708                 frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1709                                    ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1710                 if (ost->picref)
1711                     avfilter_unref_buffer(ost->picref);
1712             }
1713 #endif
1714             }
1715
1716         av_free(buffer_to_free);
1717         /* XXX: allocate the subtitles in the codec ? */
1718         if (subtitle_to_free) {
1719             avsubtitle_free(subtitle_to_free);
1720             subtitle_to_free = NULL;
1721         }
1722     }
1723  discard_packet:
1724     if (pkt == NULL) {
1725         /* EOF handling */
1726
1727         for(i=0;i<nb_ostreams;i++) {
1728             ost = &ost_table[i];
1729             if (ost->source_index == ist_index) {
1730                 AVCodecContext *enc= ost->st->codec;
1731                 os = output_files[ost->file_index].ctx;
1732
1733                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1734                     continue;
1735                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1736                     continue;
1737
1738                 if (ost->encoding_needed) {
1739                     for(;;) {
1740                         AVPacket pkt;
1741                         int fifo_bytes;
1742                         av_init_packet(&pkt);
1743                         pkt.stream_index= ost->index;
1744
1745                         switch(ost->st->codec->codec_type) {
1746                         case AVMEDIA_TYPE_AUDIO:
1747                             fifo_bytes = av_fifo_size(ost->fifo);
1748                             ret = 0;
1749                             /* encode any samples remaining in fifo */
1750                             if (fifo_bytes > 0) {
1751                                 int osize = av_get_bytes_per_sample(enc->sample_fmt);
1752                                 int fs_tmp = enc->frame_size;
1753
1754                                 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1755                                 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1756                                     enc->frame_size = fifo_bytes / (osize * enc->channels);
1757                                 } else { /* pad */
1758                                     int frame_bytes = enc->frame_size*osize*enc->channels;
1759                                     if (allocated_audio_buf_size < frame_bytes)
1760                                         exit_program(1);
1761                                     generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1762                                 }
1763
1764                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1765                                 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1766                                                           ost->st->time_base.num, enc->sample_rate);
1767                                 enc->frame_size = fs_tmp;
1768                             }
1769                             if(ret <= 0) {
1770                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1771                             }
1772                             if (ret < 0) {
1773                                 fprintf(stderr, "Audio encoding failed\n");
1774                                 exit_program(1);
1775                             }
1776                             audio_size += ret;
1777                             pkt.flags |= AV_PKT_FLAG_KEY;
1778                             break;
1779                         case AVMEDIA_TYPE_VIDEO:
1780                             ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1781                             if (ret < 0) {
1782                                 fprintf(stderr, "Video encoding failed\n");
1783                                 exit_program(1);
1784                             }
1785                             video_size += ret;
1786                             if(enc->coded_frame && enc->coded_frame->key_frame)
1787                                 pkt.flags |= AV_PKT_FLAG_KEY;
1788                             if (ost->logfile && enc->stats_out) {
1789                                 fprintf(ost->logfile, "%s", enc->stats_out);
1790                             }
1791                             break;
1792                         default:
1793                             ret=-1;
1794                         }
1795
1796                         if(ret<=0)
1797                             break;
1798                         pkt.data= bit_buffer;
1799                         pkt.size= ret;
1800                         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1801                             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1802                         write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1803                     }
1804                 }
1805             }
1806         }
1807     }
1808
1809     return 0;
1810 }
1811
1812 static void print_sdp(OutputFile *output_files, int n)
1813 {
1814     char sdp[2048];
1815     int i;
1816     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
1817
1818     if (!avc)
1819         exit_program(1);
1820     for (i = 0; i < n; i++)
1821         avc[i] = output_files[i].ctx;
1822
1823     av_sdp_create(avc, n, sdp, sizeof(sdp));
1824     printf("SDP:\n%s\n", sdp);
1825     fflush(stdout);
1826     av_freep(&avc);
1827 }
1828
1829 /*
1830  * The following code is the main loop of the file converter
1831  */
1832 static int transcode(OutputFile *output_files,
1833                      int nb_output_files,
1834                      InputFile *input_files,
1835                      int nb_input_files)
1836 {
1837     int ret = 0, i, j;
1838     AVFormatContext *is, *os;
1839     AVCodecContext *codec, *icodec;
1840     OutputStream *ost;
1841     InputStream *ist;
1842     char error[1024];
1843     int want_sdp = 1;
1844     uint8_t *no_packet;
1845     int no_packet_count=0;
1846
1847     if (!(no_packet = av_mallocz(nb_input_files)))
1848         exit_program(1);
1849
1850     if (rate_emu)
1851         for (i = 0; i < nb_input_streams; i++)
1852             input_streams[i].start = av_gettime();
1853
1854     /* output stream init */
1855     for(i=0;i<nb_output_files;i++) {
1856         os = output_files[i].ctx;
1857         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1858             av_dump_format(os, i, os->filename, 1);
1859             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
1860             ret = AVERROR(EINVAL);
1861             goto fail;
1862         }
1863     }
1864
1865     /* for each output stream, we compute the right encoding parameters */
1866     for (i = 0; i < nb_output_streams; i++) {
1867         ost = &output_streams[i];
1868         os = output_files[ost->file_index].ctx;
1869         ist = &input_streams[ost->source_index];
1870
1871         codec = ost->st->codec;
1872         icodec = ist->st->codec;
1873
1874         ost->st->disposition = ist->st->disposition;
1875         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
1876         codec->chroma_sample_location = icodec->chroma_sample_location;
1877
1878         if (ost->st->stream_copy) {
1879             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
1880
1881             if (extra_size > INT_MAX)
1882                 goto fail;
1883
1884             /* if stream_copy is selected, no need to decode or encode */
1885             codec->codec_id = icodec->codec_id;
1886             codec->codec_type = icodec->codec_type;
1887
1888             if(!codec->codec_tag){
1889                 if(   !os->oformat->codec_tag
1890                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
1891                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
1892                     codec->codec_tag = icodec->codec_tag;
1893             }
1894
1895             codec->bit_rate = icodec->bit_rate;
1896             codec->rc_max_rate    = icodec->rc_max_rate;
1897             codec->rc_buffer_size = icodec->rc_buffer_size;
1898             codec->extradata= av_mallocz(extra_size);
1899             if (!codec->extradata)
1900                 goto fail;
1901             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
1902             codec->extradata_size= icodec->extradata_size;
1903             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){
1904                 codec->time_base = icodec->time_base;
1905                 codec->time_base.num *= icodec->ticks_per_frame;
1906                 av_reduce(&codec->time_base.num, &codec->time_base.den,
1907                           codec->time_base.num, codec->time_base.den, INT_MAX);
1908             }else
1909                 codec->time_base = ist->st->time_base;
1910             switch(codec->codec_type) {
1911             case AVMEDIA_TYPE_AUDIO:
1912                 if(audio_volume != 256) {
1913                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
1914                     exit_program(1);
1915                 }
1916                 codec->channel_layout = icodec->channel_layout;
1917                 codec->sample_rate = icodec->sample_rate;
1918                 codec->channels = icodec->channels;
1919                 codec->frame_size = icodec->frame_size;
1920                 codec->audio_service_type = icodec->audio_service_type;
1921                 codec->block_align= icodec->block_align;
1922                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
1923                     codec->block_align= 0;
1924                 if(codec->codec_id == CODEC_ID_AC3)
1925                     codec->block_align= 0;
1926                 break;
1927             case AVMEDIA_TYPE_VIDEO:
1928                 codec->pix_fmt = icodec->pix_fmt;
1929                 codec->width = icodec->width;
1930                 codec->height = icodec->height;
1931                 codec->has_b_frames = icodec->has_b_frames;
1932                 if (!codec->sample_aspect_ratio.num) {
1933                     codec->sample_aspect_ratio =
1934                     ost->st->sample_aspect_ratio =
1935                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
1936                         ist->st->codec->sample_aspect_ratio.num ?
1937                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
1938                 }
1939                 break;
1940             case AVMEDIA_TYPE_SUBTITLE:
1941                 codec->width = icodec->width;
1942                 codec->height = icodec->height;
1943                 break;
1944             case AVMEDIA_TYPE_DATA:
1945                 break;
1946             default:
1947                 abort();
1948             }
1949         } else {
1950             if (!ost->enc)
1951                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
1952             switch(codec->codec_type) {
1953             case AVMEDIA_TYPE_AUDIO:
1954                 ost->fifo= av_fifo_alloc(1024);
1955                 if(!ost->fifo)
1956                     goto fail;
1957                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
1958                 if (!codec->sample_rate) {
1959                     codec->sample_rate = icodec->sample_rate;
1960                     if (icodec->lowres)
1961                         codec->sample_rate >>= icodec->lowres;
1962                 }
1963                 choose_sample_rate(ost->st, ost->enc);
1964                 codec->time_base = (AVRational){1, codec->sample_rate};
1965                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
1966                     codec->sample_fmt = icodec->sample_fmt;
1967                 choose_sample_fmt(ost->st, ost->enc);
1968                 if (!codec->channels)
1969                     codec->channels = icodec->channels;
1970                 codec->channel_layout = icodec->channel_layout;
1971                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
1972                     codec->channel_layout = 0;
1973                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
1974                 icodec->request_channels = codec->channels;
1975                 ist->decoding_needed = 1;
1976                 ost->encoding_needed = 1;
1977                 ost->resample_sample_fmt  = icodec->sample_fmt;
1978                 ost->resample_sample_rate = icodec->sample_rate;
1979                 ost->resample_channels    = icodec->channels;
1980                 break;
1981             case AVMEDIA_TYPE_VIDEO:
1982                 if (codec->pix_fmt == PIX_FMT_NONE)
1983                     codec->pix_fmt = icodec->pix_fmt;
1984                 choose_pixel_fmt(ost->st, ost->enc);
1985
1986                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
1987                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
1988                     exit_program(1);
1989                 }
1990
1991                 if (!codec->width || !codec->height) {
1992                     codec->width  = icodec->width;
1993                     codec->height = icodec->height;
1994                 }
1995
1996                 ost->video_resample = codec->width   != icodec->width  ||
1997                                       codec->height  != icodec->height ||
1998                                       codec->pix_fmt != icodec->pix_fmt;
1999                 if (ost->video_resample) {
2000 #if !CONFIG_AVFILTER
2001                     avcodec_get_frame_defaults(&ost->pict_tmp);
2002                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2003                                        codec->width, codec->height)) {
2004                         fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
2005                         exit_program(1);
2006                     }
2007                     ost->img_resample_ctx = sws_getContext(
2008                         icodec->width,
2009                         icodec->height,
2010                         icodec->pix_fmt,
2011                         codec->width,
2012                         codec->height,
2013                         codec->pix_fmt,
2014                         ost->sws_flags, NULL, NULL, NULL);
2015                     if (ost->img_resample_ctx == NULL) {
2016                         fprintf(stderr, "Cannot get resampling context\n");
2017                         exit_program(1);
2018                     }
2019 #endif
2020                     codec->bits_per_raw_sample= 0;
2021                 }
2022
2023                 ost->resample_height = icodec->height;
2024                 ost->resample_width  = icodec->width;
2025                 ost->resample_pix_fmt= icodec->pix_fmt;
2026                 ost->encoding_needed = 1;
2027                 ist->decoding_needed = 1;
2028
2029                 if (!ost->frame_rate.num)
2030                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2031                 if (ost->enc && ost->enc->supported_framerates && !force_fps) {
2032                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2033                     ost->frame_rate = ost->enc->supported_framerates[idx];
2034                 }
2035                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2036
2037 #if CONFIG_AVFILTER
2038                 if (configure_video_filters(ist, ost)) {
2039                     fprintf(stderr, "Error opening filters!\n");
2040                     exit(1);
2041                 }
2042 #endif
2043                 break;
2044             case AVMEDIA_TYPE_SUBTITLE:
2045                 ost->encoding_needed = 1;
2046                 ist->decoding_needed = 1;
2047                 break;
2048             default:
2049                 abort();
2050                 break;
2051             }
2052             /* two pass mode */
2053             if (ost->encoding_needed &&
2054                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2055                 char logfilename[1024];
2056                 FILE *f;
2057
2058                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2059                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2060                          i);
2061                 if (codec->flags & CODEC_FLAG_PASS1) {
2062                     f = fopen(logfilename, "wb");
2063                     if (!f) {
2064                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2065                         exit_program(1);
2066                     }
2067                     ost->logfile = f;
2068                 } else {
2069                     char  *logbuffer;
2070                     size_t logbuffer_size;
2071                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2072                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2073                         exit_program(1);
2074                     }
2075                     codec->stats_in = logbuffer;
2076                 }
2077             }
2078         }
2079         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2080             int size= codec->width * codec->height;
2081             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2082         }
2083     }
2084
2085     if (!bit_buffer)
2086         bit_buffer = av_malloc(bit_buffer_size);
2087     if (!bit_buffer) {
2088         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2089                 bit_buffer_size);
2090         ret = AVERROR(ENOMEM);
2091         goto fail;
2092     }
2093
2094     /* open each encoder */
2095     for (i = 0; i < nb_output_streams; i++) {
2096         ost = &output_streams[i];
2097         if (ost->encoding_needed) {
2098             AVCodec *codec = ost->enc;
2099             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2100             if (!codec) {
2101                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2102                          ost->st->codec->codec_id, ost->file_index, ost->index);
2103                 ret = AVERROR(EINVAL);
2104                 goto dump_format;
2105             }
2106             if (dec->subtitle_header) {
2107                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2108                 if (!ost->st->codec->subtitle_header) {
2109                     ret = AVERROR(ENOMEM);
2110                     goto dump_format;
2111                 }
2112                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2113                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2114             }
2115             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2116                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2117                         ost->file_index, ost->index);
2118                 ret = AVERROR(EINVAL);
2119                 goto dump_format;
2120             }
2121             assert_codec_experimental(ost->st->codec, 1);
2122             assert_avoptions(ost->opts);
2123             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2124                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2125                                              "It takes bits/s as argument, not kbits/s\n");
2126             extra_size += ost->st->codec->extradata_size;
2127         }
2128     }
2129
2130     /* open each decoder */
2131     for (i = 0; i < nb_input_streams; i++) {
2132         ist = &input_streams[i];
2133         if (ist->decoding_needed) {
2134             AVCodec *codec = ist->dec;
2135             if (!codec)
2136                 codec = avcodec_find_decoder(ist->st->codec->codec_id);
2137             if (!codec) {
2138                 snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
2139                         ist->st->codec->codec_id, ist->file_index, ist->st->index);
2140                 ret = AVERROR(EINVAL);
2141                 goto dump_format;
2142             }
2143
2144             /* update requested sample format for the decoder based on the
2145                corresponding encoder sample format */
2146             for (j = 0; j < nb_output_streams; j++) {
2147                 ost = &output_streams[j];
2148                 if (ost->source_index == i) {
2149                     update_sample_fmt(ist->st->codec, codec, ost->st->codec);
2150                     break;
2151                 }
2152             }
2153
2154             if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2155                 snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
2156                         ist->file_index, ist->st->index);
2157                 ret = AVERROR(EINVAL);
2158                 goto dump_format;
2159             }
2160             assert_codec_experimental(ist->st->codec, 0);
2161             assert_avoptions(ost->opts);
2162         }
2163     }
2164
2165     /* init pts */
2166     for (i = 0; i < nb_input_streams; i++) {
2167         AVStream *st;
2168         ist = &input_streams[i];
2169         st= ist->st;
2170         ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
2171         ist->next_pts = AV_NOPTS_VALUE;
2172         init_pts_correction(&ist->pts_ctx);
2173         ist->is_start = 1;
2174     }
2175
2176     /* open files and write file headers */
2177     for (i = 0; i < nb_output_files; i++) {
2178         os = output_files[i].ctx;
2179         if (avformat_write_header(os, &output_files[i].opts) < 0) {
2180             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2181             ret = AVERROR(EINVAL);
2182             goto dump_format;
2183         }
2184         assert_avoptions(output_files[i].opts);
2185         if (strcmp(os->oformat->name, "rtp")) {
2186             want_sdp = 0;
2187         }
2188     }
2189
2190  dump_format:
2191     /* dump the file output parameters - cannot be done before in case
2192        of stream copy */
2193     for(i=0;i<nb_output_files;i++) {
2194         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2195     }
2196
2197     /* dump the stream mapping */
2198     if (verbose >= 0) {
2199         fprintf(stderr, "Stream mapping:\n");
2200         for (i = 0; i < nb_output_streams;i ++) {
2201             ost = &output_streams[i];
2202             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2203                     input_streams[ost->source_index].file_index,
2204                     input_streams[ost->source_index].st->index,
2205                     ost->file_index,
2206                     ost->index);
2207             if (ost->sync_ist != &input_streams[ost->source_index])
2208                 fprintf(stderr, " [sync #%d.%d]",
2209                         ost->sync_ist->file_index,
2210                         ost->sync_ist->st->index);
2211             if (ost->st->stream_copy)
2212                 fprintf(stderr, " (copy)");
2213             fprintf(stderr, "\n");
2214         }
2215     }
2216
2217     if (ret) {
2218         fprintf(stderr, "%s\n", error);
2219         goto fail;
2220     }
2221
2222     if (want_sdp) {
2223         print_sdp(output_files, nb_output_files);
2224     }
2225
2226     if (verbose >= 0)
2227         fprintf(stderr, "Press ctrl-c to stop encoding\n");
2228     term_init();
2229
2230     timer_start = av_gettime();
2231
2232     for(; received_sigterm == 0;) {
2233         int file_index, ist_index;
2234         AVPacket pkt;
2235         int64_t ipts_min;
2236         double opts_min;
2237
2238     redo:
2239         ipts_min = INT64_MAX;
2240         opts_min= 1e100;
2241
2242         /* select the stream that we must read now by looking at the
2243            smallest output pts */
2244         file_index = -1;
2245         for (i = 0; i < nb_output_streams; i++) {
2246             int64_t ipts;
2247             double  opts;
2248             ost = &output_streams[i];
2249             os = output_files[ost->file_index].ctx;
2250             ist = &input_streams[ost->source_index];
2251             if(ost->is_past_recording_time || no_packet[ist->file_index])
2252                 continue;
2253                 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2254             ipts = ist->pts;
2255             if (!input_files[ist->file_index].eof_reached){
2256                 if(ipts < ipts_min) {
2257                     ipts_min = ipts;
2258                     if(input_sync ) file_index = ist->file_index;
2259                 }
2260                 if(opts < opts_min) {
2261                     opts_min = opts;
2262                     if(!input_sync) file_index = ist->file_index;
2263                 }
2264             }
2265             if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
2266                 file_index= -1;
2267                 break;
2268             }
2269         }
2270         /* if none, if is finished */
2271         if (file_index < 0) {
2272             if(no_packet_count){
2273                 no_packet_count=0;
2274                 memset(no_packet, 0, nb_input_files);
2275                 usleep(10000);
2276                 continue;
2277             }
2278             break;
2279         }
2280
2281         /* finish if limit size exhausted */
2282         if (limit_filesize != 0 && limit_filesize <= avio_tell(output_files[0].ctx->pb))
2283             break;
2284
2285         /* read a frame from it and output it in the fifo */
2286         is = input_files[file_index].ctx;
2287         ret= av_read_frame(is, &pkt);
2288         if(ret == AVERROR(EAGAIN)){
2289             no_packet[file_index]=1;
2290             no_packet_count++;
2291             continue;
2292         }
2293         if (ret < 0) {
2294             input_files[file_index].eof_reached = 1;
2295             if (opt_shortest)
2296                 break;
2297             else
2298                 continue;
2299         }
2300
2301         no_packet_count=0;
2302         memset(no_packet, 0, nb_input_files);
2303
2304         if (do_pkt_dump) {
2305             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2306                              is->streams[pkt.stream_index]);
2307         }
2308         /* the following test is needed in case new streams appear
2309            dynamically in stream : we ignore them */
2310         if (pkt.stream_index >= input_files[file_index].ctx->nb_streams)
2311             goto discard_packet;
2312         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2313         ist = &input_streams[ist_index];
2314         if (ist->discard)
2315             goto discard_packet;
2316
2317         if (pkt.dts != AV_NOPTS_VALUE)
2318             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2319         if (pkt.pts != AV_NOPTS_VALUE)
2320             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2321
2322         if (ist->ts_scale) {
2323             if(pkt.pts != AV_NOPTS_VALUE)
2324                 pkt.pts *= ist->ts_scale;
2325             if(pkt.dts != AV_NOPTS_VALUE)
2326                 pkt.dts *= ist->ts_scale;
2327         }
2328
2329 //        fprintf(stderr, "next:%"PRId64" dts:%"PRId64" off:%"PRId64" %d\n", ist->next_pts, pkt.dts, input_files[ist->file_index].ts_offset, ist->st->codec->codec_type);
2330         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2331             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2332             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2333             int64_t delta= pkt_dts - ist->next_pts;
2334             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2335                 input_files[ist->file_index].ts_offset -= delta;
2336                 if (verbose > 2)
2337                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2338                             delta, input_files[ist->file_index].ts_offset);
2339                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2340                 if(pkt.pts != AV_NOPTS_VALUE)
2341                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2342             }
2343         }
2344
2345         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2346         if (output_packet(ist, ist_index, output_streams, nb_output_streams, &pkt) < 0) {
2347
2348             if (verbose >= 0)
2349                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2350                         ist->file_index, ist->st->index);
2351             if (exit_on_error)
2352                 exit_program(1);
2353             av_free_packet(&pkt);
2354             goto redo;
2355         }
2356
2357     discard_packet:
2358         av_free_packet(&pkt);
2359
2360         /* dump report by using the output first video and audio streams */
2361         print_report(output_files, output_streams, nb_output_streams, 0);
2362     }
2363
2364     /* at the end of stream, we must flush the decoder buffers */
2365     for (i = 0; i < nb_input_streams; i++) {
2366         ist = &input_streams[i];
2367         if (ist->decoding_needed) {
2368             output_packet(ist, i, output_streams, nb_output_streams, NULL);
2369         }
2370     }
2371
2372     term_exit();
2373
2374     /* write the trailer if needed and close file */
2375     for(i=0;i<nb_output_files;i++) {
2376         os = output_files[i].ctx;
2377         av_write_trailer(os);
2378     }
2379
2380     /* dump report by using the first video and audio streams */
2381     print_report(output_files, output_streams, nb_output_streams, 1);
2382
2383     /* close each encoder */
2384     for (i = 0; i < nb_output_streams; i++) {
2385         ost = &output_streams[i];
2386         if (ost->encoding_needed) {
2387             av_freep(&ost->st->codec->stats_in);
2388             avcodec_close(ost->st->codec);
2389         }
2390 #if CONFIG_AVFILTER
2391         avfilter_graph_free(&ost->graph);
2392 #endif
2393     }
2394
2395     /* close each decoder */
2396     for (i = 0; i < nb_input_streams; i++) {
2397         ist = &input_streams[i];
2398         if (ist->decoding_needed) {
2399             avcodec_close(ist->st->codec);
2400         }
2401     }
2402
2403     /* finished ! */
2404     ret = 0;
2405
2406  fail:
2407     av_freep(&bit_buffer);
2408     av_freep(&no_packet);
2409
2410     if (output_streams) {
2411         for (i = 0; i < nb_output_streams; i++) {
2412             ost = &output_streams[i];
2413             if (ost) {
2414                 if (ost->st->stream_copy)
2415                     av_freep(&ost->st->codec->extradata);
2416                 if (ost->logfile) {
2417                     fclose(ost->logfile);
2418                     ost->logfile = NULL;
2419                 }
2420                 av_fifo_free(ost->fifo); /* works even if fifo is not
2421                                              initialized but set to zero */
2422                 av_freep(&ost->st->codec->subtitle_header);
2423                 av_free(ost->pict_tmp.data[0]);
2424                 av_free(ost->forced_kf_pts);
2425                 if (ost->video_resample)
2426                     sws_freeContext(ost->img_resample_ctx);
2427                 if (ost->resample)
2428                     audio_resample_close(ost->resample);
2429                 if (ost->reformat_ctx)
2430                     av_audio_convert_free(ost->reformat_ctx);
2431                 av_dict_free(&ost->opts);
2432             }
2433         }
2434     }
2435     return ret;
2436 }
2437
2438 static int opt_format(const char *opt, const char *arg)
2439 {
2440     last_asked_format = arg;
2441     return 0;
2442 }
2443
2444 static int opt_video_rc_override_string(const char *opt, const char *arg)
2445 {
2446     video_rc_override_string = arg;
2447     return 0;
2448 }
2449
2450 static int opt_me_threshold(const char *opt, const char *arg)
2451 {
2452     me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2453     return 0;
2454 }
2455
2456 static int opt_verbose(const char *opt, const char *arg)
2457 {
2458     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2459     return 0;
2460 }
2461
2462 static int opt_frame_rate(const char *opt, const char *arg)
2463 {
2464     if (av_parse_video_rate(&frame_rate, arg) < 0) {
2465         fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2466         exit_program(1);
2467     }
2468     return 0;
2469 }
2470
2471 static int opt_frame_crop(const char *opt, const char *arg)
2472 {
2473     fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
2474     return AVERROR(EINVAL);
2475 }
2476
2477 static int opt_frame_size(const char *opt, const char *arg)
2478 {
2479     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2480         fprintf(stderr, "Incorrect frame size\n");
2481         return AVERROR(EINVAL);
2482     }
2483     return 0;
2484 }
2485
2486 static int opt_pad(const char *opt, const char *arg) {
2487     fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2488     return -1;
2489 }
2490
2491 static int opt_frame_pix_fmt(const char *opt, const char *arg)
2492 {
2493     if (strcmp(arg, "list")) {
2494         frame_pix_fmt = av_get_pix_fmt(arg);
2495         if (frame_pix_fmt == PIX_FMT_NONE) {
2496             fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2497             return AVERROR(EINVAL);
2498         }
2499     } else {
2500         show_pix_fmts();
2501         exit_program(0);
2502     }
2503     return 0;
2504 }
2505
2506 static int opt_frame_aspect_ratio(const char *opt, const char *arg)
2507 {
2508     int x = 0, y = 0;
2509     double ar = 0;
2510     const char *p;
2511     char *end;
2512
2513     p = strchr(arg, ':');
2514     if (p) {
2515         x = strtol(arg, &end, 10);
2516         if (end == p)
2517             y = strtol(end+1, &end, 10);
2518         if (x > 0 && y > 0)
2519             ar = (double)x / (double)y;
2520     } else
2521         ar = strtod(arg, NULL);
2522
2523     if (!ar) {
2524         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2525         return AVERROR(EINVAL);
2526     }
2527     frame_aspect_ratio = ar;
2528     return 0;
2529 }
2530
2531 static int opt_metadata(const char *opt, const char *arg)
2532 {
2533     char *mid= strchr(arg, '=');
2534
2535     if(!mid){
2536         fprintf(stderr, "Missing =\n");
2537         exit_program(1);
2538     }
2539     *mid++= 0;
2540
2541     av_dict_set(&metadata, arg, mid, 0);
2542
2543     return 0;
2544 }
2545
2546 static int opt_qscale(const char *opt, const char *arg)
2547 {
2548     video_qscale = parse_number_or_die(opt, arg, OPT_FLOAT, 0, 255);
2549     if (video_qscale == 0) {
2550         fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2551         return AVERROR(EINVAL);
2552     }
2553     return 0;
2554 }
2555
2556 static int opt_top_field_first(const char *opt, const char *arg)
2557 {
2558     top_field_first = parse_number_or_die(opt, arg, OPT_INT, 0, 1);
2559     return 0;
2560 }
2561
2562 static int opt_thread_count(const char *opt, const char *arg)
2563 {
2564     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2565 #if !HAVE_THREADS
2566     if (verbose >= 0)
2567         fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2568 #endif
2569     return 0;
2570 }
2571
2572 static int opt_audio_sample_fmt(const char *opt, const char *arg)
2573 {
2574     if (strcmp(arg, "list")) {
2575         audio_sample_fmt = av_get_sample_fmt(arg);
2576         if (audio_sample_fmt == AV_SAMPLE_FMT_NONE) {
2577             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg);
2578             return AVERROR(EINVAL);
2579         }
2580     } else {
2581         int i;
2582         char fmt_str[128];
2583         for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
2584             printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
2585         exit_program(0);
2586     }
2587     return 0;
2588 }
2589
2590 static int opt_audio_rate(const char *opt, const char *arg)
2591 {
2592     audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2593     return 0;
2594 }
2595
2596 static int opt_audio_channels(const char *opt, const char *arg)
2597 {
2598     audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2599     return 0;
2600 }
2601
2602 static int opt_codec(const char *opt, const char *arg)
2603 {
2604     return av_dict_set(&codec_names, opt, arg, 0);
2605 }
2606
2607 static int opt_audio_codec(const char *opt, const char *arg)
2608 {
2609     return opt_codec("codec:a", arg);
2610 }
2611
2612 static int opt_video_codec(const char *opt, const char *arg)
2613 {
2614     return opt_codec("codec:v", arg);
2615 }
2616
2617 static int opt_subtitle_codec(const char *opt, const char *arg)
2618 {
2619     return opt_codec("codec:s", arg);
2620 }
2621
2622 static int opt_data_codec(const char *opt, const char *arg)
2623 {
2624     return opt_codec("codec:d", arg);
2625 }
2626
2627 static int opt_codec_tag(const char *opt, const char *arg)
2628 {
2629     char *tail;
2630     uint32_t *codec_tag;
2631
2632     codec_tag = !strcmp(opt, "atag") ? &audio_codec_tag :
2633                 !strcmp(opt, "vtag") ? &video_codec_tag :
2634                 !strcmp(opt, "stag") ? &subtitle_codec_tag : NULL;
2635     if (!codec_tag)
2636         return -1;
2637
2638     *codec_tag = strtol(arg, &tail, 0);
2639     if (!tail || *tail)
2640         *codec_tag = AV_RL32(arg);
2641
2642     return 0;
2643 }
2644
2645 static int opt_map(const char *opt, const char *arg)
2646 {
2647     StreamMap *m = NULL;
2648     int i, negative = 0, file_idx;
2649     int sync_file_idx = -1, sync_stream_idx;
2650     char *p, *sync;
2651     char *map;
2652
2653     if (*arg == '-') {
2654         negative = 1;
2655         arg++;
2656     }
2657     map = av_strdup(arg);
2658
2659     /* parse sync stream first, just pick first matching stream */
2660     if (sync = strchr(map, ',')) {
2661         *sync = 0;
2662         sync_file_idx = strtol(sync + 1, &sync, 0);
2663         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2664             av_log(NULL, AV_LOG_ERROR, "Invalid sync file index: %d.\n", sync_file_idx);
2665             exit_program(1);
2666         }
2667         if (*sync)
2668             sync++;
2669         for (i = 0; i < input_files[sync_file_idx].ctx->nb_streams; i++)
2670             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2671                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2672                 sync_stream_idx = i;
2673                 break;
2674             }
2675         if (i == input_files[sync_file_idx].ctx->nb_streams) {
2676             av_log(NULL, AV_LOG_ERROR, "Sync stream specification in map %s does not "
2677                                        "match any streams.\n", arg);
2678             exit_program(1);
2679         }
2680     }
2681
2682
2683     file_idx = strtol(map, &p, 0);
2684     if (file_idx >= nb_input_files || file_idx < 0) {
2685         av_log(NULL, AV_LOG_ERROR, "Invalid input file index: %d.\n", file_idx);
2686         exit_program(1);
2687     }
2688     if (negative)
2689         /* disable some already defined maps */
2690         for (i = 0; i < nb_stream_maps; i++) {
2691             m = &stream_maps[i];
2692             if (check_stream_specifier(input_files[m->file_index].ctx,
2693                                        input_files[m->file_index].ctx->streams[m->stream_index],
2694                                        *p == ':' ? p + 1 : p) > 0)
2695                 m->disabled = 1;
2696         }
2697     else
2698         for (i = 0; i < input_files[file_idx].ctx->nb_streams; i++) {
2699             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2700                         *p == ':' ? p + 1 : p) <= 0)
2701                 continue;
2702             stream_maps = grow_array(stream_maps, sizeof(*stream_maps), &nb_stream_maps, nb_stream_maps + 1);
2703             m = &stream_maps[nb_stream_maps - 1];
2704
2705             m->file_index   = file_idx;
2706             m->stream_index = i;
2707
2708             if (sync_file_idx >= 0) {
2709                 m->sync_file_index   = sync_file_idx;
2710                 m->sync_stream_index = sync_stream_idx;
2711             } else {
2712                 m->sync_file_index   = file_idx;
2713                 m->sync_stream_index = i;
2714             }
2715         }
2716
2717     if (!m) {
2718         av_log(NULL, AV_LOG_ERROR, "Stream map '%s' matches no streams.\n", arg);
2719         exit_program(1);
2720     }
2721
2722     av_freep(&map);
2723     return 0;
2724 }
2725
2726 static void parse_meta_type(char *arg, char *type, int *index)
2727 {
2728     if (*arg == ':') {
2729         *type = *(++arg);
2730         switch (*arg) {
2731         case 'g':
2732             break;
2733         case 's':
2734         case 'c':
2735         case 'p':
2736             if (*(++arg) == ':')
2737                 *index = strtol(++arg, NULL, 0);
2738             break;
2739         default:
2740             fprintf(stderr, "Invalid metadata type %c.\n", *arg);
2741             exit_program(1);
2742         }
2743     } else
2744         *type = 'g';
2745 }
2746
2747 static int opt_map_metadata(const char *opt, const char *arg)
2748 {
2749     MetadataMap *m, *m1;
2750     char *p;
2751
2752     meta_data_maps = grow_array(meta_data_maps, sizeof(*meta_data_maps),
2753                                 &nb_meta_data_maps, nb_meta_data_maps + 1);
2754
2755     m = &meta_data_maps[nb_meta_data_maps - 1][1];
2756     m->file = strtol(arg, &p, 0);
2757     parse_meta_type(p, &m->type, &m->index);
2758
2759     m1 = &meta_data_maps[nb_meta_data_maps - 1][0];
2760     if (p = strchr(opt, ':'))
2761         parse_meta_type(p, &m1->type, &m1->index);
2762     else
2763         m1->type = 'g';
2764
2765     if (m->type == 'g' || m1->type == 'g')
2766         metadata_global_autocopy = 0;
2767     if (m->type == 's' || m1->type == 's')
2768         metadata_streams_autocopy = 0;
2769     if (m->type == 'c' || m1->type == 'c')
2770         metadata_chapters_autocopy = 0;
2771
2772     return 0;
2773 }
2774
2775 static int opt_input_ts_scale(const char *opt, const char *arg)
2776 {
2777     return av_dict_set(&ts_scale, opt, arg, 0);
2778 }
2779
2780 static int opt_recording_time(const char *opt, const char *arg)
2781 {
2782     recording_time = parse_time_or_die(opt, arg, 1);
2783     return 0;
2784 }
2785
2786 static int opt_start_time(const char *opt, const char *arg)
2787 {
2788     start_time = parse_time_or_die(opt, arg, 1);
2789     return 0;
2790 }
2791
2792 static int opt_input_ts_offset(const char *opt, const char *arg)
2793 {
2794     input_ts_offset = parse_time_or_die(opt, arg, 1);
2795     return 0;
2796 }
2797
2798 static enum CodecID find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
2799 {
2800     const char *codec_string = encoder ? "encoder" : "decoder";
2801     AVCodec *codec;
2802
2803     if(!name)
2804         return CODEC_ID_NONE;
2805     codec = encoder ?
2806         avcodec_find_encoder_by_name(name) :
2807         avcodec_find_decoder_by_name(name);
2808     if(!codec) {
2809         av_log(NULL, AV_LOG_ERROR, "Unknown %s '%s'\n", codec_string, name);
2810         exit_program(1);
2811     }
2812     if(codec->type != type) {
2813         av_log(NULL, AV_LOG_ERROR, "Invalid %s type '%s'\n", codec_string, name);
2814         exit_program(1);
2815     }
2816     return codec->id;
2817 }
2818
2819 static AVCodec *choose_codec(AVFormatContext *s, AVStream *st, enum AVMediaType type, AVDictionary *codec_names)
2820 {
2821     AVDictionaryEntry *e = NULL;
2822     char *codec_name = NULL;
2823     int ret;
2824
2825     while (e = av_dict_get(codec_names, "", e, AV_DICT_IGNORE_SUFFIX)) {
2826         char *p = strchr(e->key, ':');
2827
2828         if ((ret = check_stream_specifier(s, st, p ? p + 1 : "")) > 0)
2829             codec_name = e->value;
2830         else if (ret < 0)
2831             exit_program(1);
2832     }
2833
2834     if (!codec_name) {
2835         if (s->oformat) {
2836             st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename, NULL, type);
2837             return avcodec_find_encoder(st->codec->codec_id);
2838         }
2839     } else if (!strcmp(codec_name, "copy"))
2840         st->stream_copy = 1;
2841     else {
2842         st->codec->codec_id = find_codec_or_die(codec_name, type, s->iformat == NULL);
2843         return s->oformat ? avcodec_find_encoder_by_name(codec_name) :
2844                             avcodec_find_decoder_by_name(codec_name);
2845     }
2846
2847     return NULL;
2848 }
2849
2850 /**
2851  * Add all the streams from the given input file to the global
2852  * list of input streams.
2853  */
2854 static void add_input_streams(AVFormatContext *ic)
2855 {
2856     int i, rfps, rfps_base, ret;
2857
2858     for (i = 0; i < ic->nb_streams; i++) {
2859         AVStream *st = ic->streams[i];
2860         AVCodecContext *dec = st->codec;
2861         AVDictionaryEntry *e = NULL;
2862         InputStream *ist;
2863         char *scale = NULL;
2864
2865         dec->thread_count = thread_count;
2866
2867         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
2868         ist = &input_streams[nb_input_streams - 1];
2869         ist->st = st;
2870         ist->file_index = nb_input_files;
2871         ist->discard = 1;
2872         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
2873
2874         while (e = av_dict_get(ts_scale, "", e, AV_DICT_IGNORE_SUFFIX)) {
2875             char *p = strchr(e->key, ':');
2876
2877             if ((ret = check_stream_specifier(ic, st, p ? p + 1 : "")) > 0)
2878                 scale = e->value;
2879             else if (ret < 0)
2880                 exit_program(1);
2881         }
2882         if (scale)
2883             ist->ts_scale = strtod(scale, NULL);
2884
2885         ist->dec = choose_codec(ic, st, dec->codec_type, codec_names);
2886
2887         switch (dec->codec_type) {
2888         case AVMEDIA_TYPE_AUDIO:
2889             if(audio_disable)
2890                 st->discard= AVDISCARD_ALL;
2891             break;
2892         case AVMEDIA_TYPE_VIDEO:
2893             rfps      = ic->streams[i]->r_frame_rate.num;
2894             rfps_base = ic->streams[i]->r_frame_rate.den;
2895             if (dec->lowres) {
2896                 dec->flags |= CODEC_FLAG_EMU_EDGE;
2897                 dec->height >>= dec->lowres;
2898                 dec->width  >>= dec->lowres;
2899             }
2900             if(me_threshold)
2901                 dec->debug |= FF_DEBUG_MV;
2902
2903             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
2904
2905                 if (verbose >= 0)
2906                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
2907                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
2908
2909                     (float)rfps / rfps_base, rfps, rfps_base);
2910             }
2911
2912             if(video_disable)
2913                 st->discard= AVDISCARD_ALL;
2914             else if(video_discard)
2915                 st->discard= video_discard;
2916             break;
2917         case AVMEDIA_TYPE_DATA:
2918             break;
2919         case AVMEDIA_TYPE_SUBTITLE:
2920             if(subtitle_disable)
2921                 st->discard = AVDISCARD_ALL;
2922             break;
2923         case AVMEDIA_TYPE_ATTACHMENT:
2924         case AVMEDIA_TYPE_UNKNOWN:
2925             break;
2926         default:
2927             abort();
2928         }
2929     }
2930 }
2931
2932 static int opt_input_file(const char *opt, const char *filename)
2933 {
2934     AVFormatContext *ic;
2935     AVInputFormat *file_iformat = NULL;
2936     int err, i, ret;
2937     int64_t timestamp;
2938     uint8_t buf[128];
2939     AVDictionary **opts;
2940     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
2941
2942     if (last_asked_format) {
2943         if (!(file_iformat = av_find_input_format(last_asked_format))) {
2944             fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
2945             exit_program(1);
2946         }
2947         last_asked_format = NULL;
2948     }
2949
2950     if (!strcmp(filename, "-"))
2951         filename = "pipe:";
2952
2953     using_stdin |= !strncmp(filename, "pipe:", 5) ||
2954                     !strcmp(filename, "/dev/stdin");
2955
2956     /* get default parameters from command line */
2957     ic = avformat_alloc_context();
2958     if (!ic) {
2959         print_error(filename, AVERROR(ENOMEM));
2960         exit_program(1);
2961     }
2962     if (audio_sample_rate) {
2963         snprintf(buf, sizeof(buf), "%d", audio_sample_rate);
2964         av_dict_set(&format_opts, "sample_rate", buf, 0);
2965     }
2966     if (audio_channels) {
2967         snprintf(buf, sizeof(buf), "%d", audio_channels);
2968         av_dict_set(&format_opts, "channels", buf, 0);
2969     }
2970     if (frame_rate.num) {
2971         snprintf(buf, sizeof(buf), "%d/%d", frame_rate.num, frame_rate.den);
2972         av_dict_set(&format_opts, "framerate", buf, 0);
2973     }
2974     if (frame_width && frame_height) {
2975         snprintf(buf, sizeof(buf), "%dx%d", frame_width, frame_height);
2976         av_dict_set(&format_opts, "video_size", buf, 0);
2977     }
2978     if (frame_pix_fmt != PIX_FMT_NONE)
2979         av_dict_set(&format_opts, "pixel_format", av_get_pix_fmt_name(frame_pix_fmt), 0);
2980
2981     ic->flags |= AVFMT_FLAG_NONBLOCK;
2982
2983     /* open the input file with generic libav function */
2984     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
2985     if (err < 0) {
2986         print_error(filename, err);
2987         exit_program(1);
2988     }
2989     assert_avoptions(format_opts);
2990
2991     if(opt_programid) {
2992         int i, j;
2993         int found=0;
2994         for(i=0; i<ic->nb_streams; i++){
2995             ic->streams[i]->discard= AVDISCARD_ALL;
2996         }
2997         for(i=0; i<ic->nb_programs; i++){
2998             AVProgram *p= ic->programs[i];
2999             if(p->id != opt_programid){
3000                 p->discard = AVDISCARD_ALL;
3001             }else{
3002                 found=1;
3003                 for(j=0; j<p->nb_stream_indexes; j++){
3004                     ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
3005                 }
3006             }
3007         }
3008         if(!found){
3009             fprintf(stderr, "Specified program id not found\n");
3010             exit_program(1);
3011         }
3012         opt_programid=0;
3013     }
3014
3015     /* apply forced codec ids */
3016     for (i = 0; i < ic->nb_streams; i++)
3017         choose_codec(ic, ic->streams[i], ic->streams[i]->codec->codec_type, codec_names);
3018
3019     /* Set AVCodecContext options for avformat_find_stream_info */
3020     opts = setup_find_stream_info_opts(ic, codec_opts);
3021     orig_nb_streams = ic->nb_streams;
3022
3023     /* If not enough info to get the stream parameters, we decode the
3024        first frames to get it. (used in mpeg case for example) */
3025     ret = avformat_find_stream_info(ic, opts);
3026     if (ret < 0 && verbose >= 0) {
3027         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3028         av_close_input_file(ic);
3029         exit_program(1);
3030     }
3031
3032     timestamp = start_time;
3033     /* add the stream start time */
3034     if (ic->start_time != AV_NOPTS_VALUE)
3035         timestamp += ic->start_time;
3036
3037     /* if seeking requested, we execute it */
3038     if (start_time != 0) {
3039         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3040         if (ret < 0) {
3041             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3042                     filename, (double)timestamp / AV_TIME_BASE);
3043         }
3044         /* reset seek info */
3045         start_time = 0;
3046     }
3047
3048     /* update the current parameters so that they match the one of the input stream */
3049     add_input_streams(ic);
3050
3051     /* dump the file content */
3052     if (verbose >= 0)
3053         av_dump_format(ic, nb_input_files, filename, 0);
3054
3055     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3056     input_files[nb_input_files - 1].ctx        = ic;
3057     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3058     input_files[nb_input_files - 1].ts_offset  = input_ts_offset - (copy_ts ? 0 : timestamp);
3059
3060     frame_rate    = (AVRational){0, 0};
3061     frame_pix_fmt = PIX_FMT_NONE;
3062     frame_height = 0;
3063     frame_width  = 0;
3064     audio_sample_rate = 0;
3065     audio_channels    = 0;
3066     audio_sample_fmt  = AV_SAMPLE_FMT_NONE;
3067     av_dict_free(&ts_scale);
3068
3069     for (i = 0; i < orig_nb_streams; i++)
3070         av_dict_free(&opts[i]);
3071     av_freep(&opts);
3072     av_dict_free(&codec_names);
3073     uninit_opts();
3074     init_opts();
3075     return 0;
3076 }
3077
3078 static void parse_forced_key_frames(char *kf, OutputStream *ost,
3079                                     AVCodecContext *avctx)
3080 {
3081     char *p;
3082     int n = 1, i;
3083     int64_t t;
3084
3085     for (p = kf; *p; p++)
3086         if (*p == ',')
3087             n++;
3088     ost->forced_kf_count = n;
3089     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
3090     if (!ost->forced_kf_pts) {
3091         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
3092         exit_program(1);
3093     }
3094     for (i = 0; i < n; i++) {
3095         p = i ? strchr(p, ',') + 1 : kf;
3096         t = parse_time_or_die("force_key_frames", p, 1);
3097         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
3098     }
3099 }
3100
3101 static OutputStream *new_output_stream(AVFormatContext *oc, enum AVMediaType type)
3102 {
3103     OutputStream *ost;
3104     AVStream *st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3105     int idx      = oc->nb_streams - 1;
3106
3107     if (!st) {
3108         av_log(NULL, AV_LOG_ERROR, "Could not alloc stream.\n");
3109         exit_program(1);
3110     }
3111
3112     output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
3113                                 nb_output_streams + 1);
3114     ost = &output_streams[nb_output_streams - 1];
3115     ost->file_index = nb_output_files;
3116     ost->index = idx;
3117     ost->st    = st;
3118     st->codec->codec_type = type;
3119     ost->enc = choose_codec(oc, st, type, codec_names);
3120     if (ost->enc) {
3121         ost->opts  = filter_codec_opts(codec_opts, ost->enc->id, oc, st);
3122     }
3123
3124     avcodec_get_context_defaults3(st->codec, ost->enc);
3125     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
3126
3127     ost->sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
3128     return ost;
3129 }
3130
3131 static OutputStream *new_video_stream(AVFormatContext *oc)
3132 {
3133     AVStream *st;
3134     OutputStream *ost;
3135     AVCodecContext *video_enc;
3136
3137     ost = new_output_stream(oc, AVMEDIA_TYPE_VIDEO);
3138     st  = ost->st;
3139     if (!st->stream_copy) {
3140         ost->frame_aspect_ratio = frame_aspect_ratio;
3141         frame_aspect_ratio = 0;
3142 #if CONFIG_AVFILTER
3143         ost->avfilter= vfilters;
3144         vfilters = NULL;
3145 #endif
3146     }
3147
3148     ost->bitstream_filters = video_bitstream_filters;
3149     video_bitstream_filters= NULL;
3150
3151     st->codec->thread_count= thread_count;
3152
3153     video_enc = st->codec;
3154
3155     if(video_codec_tag)
3156         video_enc->codec_tag= video_codec_tag;
3157
3158     if(oc->oformat->flags & AVFMT_GLOBALHEADER) {
3159         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3160     }
3161
3162     if (st->stream_copy) {
3163         video_enc->sample_aspect_ratio =
3164         st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3165     } else {
3166         const char *p;
3167         int i;
3168
3169         if (frame_rate.num)
3170             ost->frame_rate = frame_rate;
3171
3172         video_enc->width = frame_width;
3173         video_enc->height = frame_height;
3174         video_enc->pix_fmt = frame_pix_fmt;
3175         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3176
3177         if (intra_only)
3178             video_enc->gop_size = 0;
3179         if (video_qscale || same_quant) {
3180             video_enc->flags |= CODEC_FLAG_QSCALE;
3181             video_enc->global_quality = FF_QP2LAMBDA * video_qscale;
3182         }
3183
3184         if(intra_matrix)
3185             video_enc->intra_matrix = intra_matrix;
3186         if(inter_matrix)
3187             video_enc->inter_matrix = inter_matrix;
3188
3189         p= video_rc_override_string;
3190         for(i=0; p; i++){
3191             int start, end, q;
3192             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3193             if(e!=3){
3194                 fprintf(stderr, "error parsing rc_override\n");
3195                 exit_program(1);
3196             }
3197             video_enc->rc_override=
3198                 av_realloc(video_enc->rc_override,
3199                            sizeof(RcOverride)*(i+1));
3200             video_enc->rc_override[i].start_frame= start;
3201             video_enc->rc_override[i].end_frame  = end;
3202             if(q>0){
3203                 video_enc->rc_override[i].qscale= q;
3204                 video_enc->rc_override[i].quality_factor= 1.0;
3205             }
3206             else{
3207                 video_enc->rc_override[i].qscale= 0;
3208                 video_enc->rc_override[i].quality_factor= -q/100.0;
3209             }
3210             p= strchr(p, '/');
3211             if(p) p++;
3212         }
3213         video_enc->rc_override_count=i;
3214         if (!video_enc->rc_initial_buffer_occupancy)
3215             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3216         video_enc->me_threshold= me_threshold;
3217         video_enc->intra_dc_precision= intra_dc_precision - 8;
3218
3219         if (do_psnr)
3220             video_enc->flags|= CODEC_FLAG_PSNR;
3221
3222         /* two pass mode */
3223         if (do_pass) {
3224             if (do_pass == 1) {
3225                 video_enc->flags |= CODEC_FLAG_PASS1;
3226             } else {
3227                 video_enc->flags |= CODEC_FLAG_PASS2;
3228             }
3229         }
3230
3231         if (forced_key_frames)
3232             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3233     }
3234     if (video_language) {
3235         av_dict_set(&st->metadata, "language", video_language, 0);
3236         av_freep(&video_language);
3237     }
3238
3239     /* reset some key parameters */
3240     video_disable = 0;
3241     av_freep(&forced_key_frames);
3242     frame_pix_fmt = PIX_FMT_NONE;
3243     return ost;
3244 }
3245
3246 static OutputStream *new_audio_stream(AVFormatContext *oc)
3247 {
3248     AVStream *st;
3249     OutputStream *ost;
3250     AVCodecContext *audio_enc;
3251
3252     ost = new_output_stream(oc, AVMEDIA_TYPE_AUDIO);
3253     st  = ost->st;
3254
3255     ost->bitstream_filters = audio_bitstream_filters;
3256     audio_bitstream_filters= NULL;
3257
3258     st->codec->thread_count= thread_count;
3259
3260     audio_enc = st->codec;
3261     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3262
3263     if(audio_codec_tag)
3264         audio_enc->codec_tag= audio_codec_tag;
3265
3266     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3267         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3268     }
3269     if (!st->stream_copy) {
3270         if (audio_qscale > QSCALE_NONE) {
3271             audio_enc->flags |= CODEC_FLAG_QSCALE;
3272             audio_enc->global_quality = FF_QP2LAMBDA * audio_qscale;
3273         }
3274         if (audio_channels)
3275             audio_enc->channels = audio_channels;
3276         if (audio_sample_fmt != AV_SAMPLE_FMT_NONE)
3277             audio_enc->sample_fmt = audio_sample_fmt;
3278         if (audio_sample_rate)
3279             audio_enc->sample_rate = audio_sample_rate;
3280     }
3281     if (audio_language) {
3282         av_dict_set(&st->metadata, "language", audio_language, 0);
3283         av_freep(&audio_language);
3284     }
3285
3286     /* reset some key parameters */
3287     audio_disable = 0;
3288
3289     return ost;
3290 }
3291
3292 static OutputStream *new_data_stream(AVFormatContext *oc)
3293 {
3294     AVStream *st;
3295     OutputStream *ost;
3296     AVCodecContext *data_enc;
3297
3298     ost = new_output_stream(oc, AVMEDIA_TYPE_DATA);
3299     st  = ost->st;
3300     data_enc = st->codec;
3301     if (!st->stream_copy) {
3302         fprintf(stderr, "Data stream encoding not supported yet (only streamcopy)\n");
3303         exit_program(1);
3304     }
3305
3306     if (data_codec_tag)
3307         data_enc->codec_tag= data_codec_tag;
3308
3309     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3310         data_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3311     }
3312
3313     data_disable = 0;
3314     return ost;
3315 }
3316
3317 static OutputStream *new_subtitle_stream(AVFormatContext *oc)
3318 {
3319     AVStream *st;
3320     OutputStream *ost;
3321     AVCodecContext *subtitle_enc;
3322
3323     ost = new_output_stream(oc, AVMEDIA_TYPE_SUBTITLE);
3324     st  = ost->st;
3325     subtitle_enc = st->codec;
3326
3327     ost->bitstream_filters = subtitle_bitstream_filters;
3328     subtitle_bitstream_filters= NULL;
3329
3330     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3331
3332     if(subtitle_codec_tag)
3333         subtitle_enc->codec_tag= subtitle_codec_tag;
3334
3335     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3336         subtitle_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3337     }
3338
3339     if (subtitle_language) {
3340         av_dict_set(&st->metadata, "language", subtitle_language, 0);
3341         av_freep(&subtitle_language);
3342     }
3343
3344     subtitle_disable = 0;
3345     return ost;
3346 }
3347
3348 /* arg format is "output-stream-index:streamid-value". */
3349 static int opt_streamid(const char *opt, const char *arg)
3350 {
3351     int idx;
3352     char *p;
3353     char idx_str[16];
3354
3355     av_strlcpy(idx_str, arg, sizeof(idx_str));
3356     p = strchr(idx_str, ':');
3357     if (!p) {
3358         fprintf(stderr,
3359                 "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3360                 arg, opt);
3361         exit_program(1);
3362     }
3363     *p++ = '\0';
3364     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, INT_MAX);
3365     streamid_map = grow_array(streamid_map, sizeof(*streamid_map), &nb_streamid_map, idx+1);
3366     streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3367     return 0;
3368 }
3369
3370 static int copy_chapters(int infile, int outfile)
3371 {
3372     AVFormatContext *is = input_files[infile].ctx;
3373     AVFormatContext *os = output_files[outfile].ctx;
3374     int i;
3375
3376     for (i = 0; i < is->nb_chapters; i++) {
3377         AVChapter *in_ch = is->chapters[i], *out_ch;
3378         int64_t ts_off   = av_rescale_q(start_time - input_files[infile].ts_offset,
3379                                       AV_TIME_BASE_Q, in_ch->time_base);
3380         int64_t rt       = (recording_time == INT64_MAX) ? INT64_MAX :
3381                            av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
3382
3383
3384         if (in_ch->end < ts_off)
3385             continue;
3386         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
3387             break;
3388
3389         out_ch = av_mallocz(sizeof(AVChapter));
3390         if (!out_ch)
3391             return AVERROR(ENOMEM);
3392
3393         out_ch->id        = in_ch->id;
3394         out_ch->time_base = in_ch->time_base;
3395         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
3396         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
3397
3398         if (metadata_chapters_autocopy)
3399             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
3400
3401         os->nb_chapters++;
3402         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
3403         if (!os->chapters)
3404             return AVERROR(ENOMEM);
3405         os->chapters[os->nb_chapters - 1] = out_ch;
3406     }
3407     return 0;
3408 }
3409
3410 static int read_avserver_streams(AVFormatContext *s, const char *filename)
3411 {
3412     int i, err;
3413     AVFormatContext *ic = NULL;
3414
3415     err = avformat_open_input(&ic, filename, NULL, NULL);
3416     if (err < 0)
3417         return err;
3418     /* copy stream format */
3419     for(i=0;i<ic->nb_streams;i++) {
3420         AVStream *st;
3421         OutputStream *ost;
3422         AVCodec *codec;
3423
3424         codec = avcodec_find_encoder(ic->streams[i]->codec->codec_id);
3425         ost   = new_output_stream(s, codec->type);
3426         st    = ost->st;
3427
3428         // FIXME: a more elegant solution is needed
3429         memcpy(st, ic->streams[i], sizeof(AVStream));
3430         st->info = NULL;
3431         avcodec_copy_context(st->codec, ic->streams[i]->codec);
3432
3433         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && !st->stream_copy)
3434             choose_sample_fmt(st, codec);
3435         else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && !st->stream_copy)
3436             choose_pixel_fmt(st, codec);
3437     }
3438
3439     av_close_input_file(ic);
3440     return 0;
3441 }
3442
3443 static void opt_output_file(const char *filename)
3444 {
3445     AVFormatContext *oc;
3446     int i, err;
3447     AVOutputFormat *file_oformat;
3448     OutputStream *ost;
3449     InputStream  *ist;
3450
3451     if (!strcmp(filename, "-"))
3452         filename = "pipe:";
3453
3454     oc = avformat_alloc_context();
3455     if (!oc) {
3456         print_error(filename, AVERROR(ENOMEM));
3457         exit_program(1);
3458     }
3459
3460     if (last_asked_format) {
3461         file_oformat = av_guess_format(last_asked_format, NULL, NULL);
3462         if (!file_oformat) {
3463             fprintf(stderr, "Requested output format '%s' is not a suitable output format\n", last_asked_format);
3464             exit_program(1);
3465         }
3466         last_asked_format = NULL;
3467     } else {
3468         file_oformat = av_guess_format(NULL, filename, NULL);
3469         if (!file_oformat) {
3470             fprintf(stderr, "Unable to find a suitable output format for '%s'\n",
3471                     filename);
3472             exit_program(1);
3473         }
3474     }
3475
3476     oc->oformat = file_oformat;
3477     av_strlcpy(oc->filename, filename, sizeof(oc->filename));
3478
3479     if (!strcmp(file_oformat->name, "ffm") &&
3480         av_strstart(filename, "http:", NULL)) {
3481         /* special case for files sent to avserver: we get the stream
3482            parameters from avserver */
3483         int err = read_avserver_streams(oc, filename);
3484         if (err < 0) {
3485             print_error(filename, err);
3486             exit_program(1);
3487         }
3488     } else if (!nb_stream_maps) {
3489         /* pick the "best" stream of each type */
3490 #define NEW_STREAM(type, index)\
3491         if (index >= 0) {\
3492             ost = new_ ## type ## _stream(oc);\
3493             ost->source_index = index;\
3494             ost->sync_ist     = &input_streams[index];\
3495             input_streams[index].discard = 0;\
3496         }
3497
3498         /* video: highest resolution */
3499         if (!video_disable && oc->oformat->video_codec != CODEC_ID_NONE) {
3500             int area = 0, idx = -1;
3501             for (i = 0; i < nb_input_streams; i++) {
3502                 ist = &input_streams[i];
3503                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3504                     ist->st->codec->width * ist->st->codec->height > area) {
3505                     area = ist->st->codec->width * ist->st->codec->height;
3506                     idx = i;
3507                 }
3508             }
3509             NEW_STREAM(video, idx);
3510         }
3511
3512         /* audio: most channels */
3513         if (!audio_disable && oc->oformat->audio_codec != CODEC_ID_NONE) {
3514             int channels = 0, idx = -1;
3515             for (i = 0; i < nb_input_streams; i++) {
3516                 ist = &input_streams[i];
3517                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
3518                     ist->st->codec->channels > channels) {
3519                     channels = ist->st->codec->channels;
3520                     idx = i;
3521                 }
3522             }
3523             NEW_STREAM(audio, idx);
3524         }
3525
3526         /* subtitles: pick first */
3527         if (!subtitle_disable && oc->oformat->subtitle_codec != CODEC_ID_NONE) {
3528             for (i = 0; i < nb_input_streams; i++)
3529                 if (input_streams[i].st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3530                     NEW_STREAM(subtitle, i);
3531                     break;
3532                 }
3533         }
3534         /* do something with data? */
3535     } else {
3536         for (i = 0; i < nb_stream_maps; i++) {
3537             StreamMap *map = &stream_maps[i];
3538
3539             if (map->disabled)
3540                 continue;
3541
3542             ist = &input_streams[input_files[map->file_index].ist_index + map->stream_index];
3543             switch (ist->st->codec->codec_type) {
3544             case AVMEDIA_TYPE_VIDEO:    ost = new_video_stream(oc);    break;
3545             case AVMEDIA_TYPE_AUDIO:    ost = new_audio_stream(oc);    break;
3546             case AVMEDIA_TYPE_SUBTITLE: ost = new_subtitle_stream(oc); break;
3547             case AVMEDIA_TYPE_DATA:     ost = new_data_stream(oc);     break;
3548             default:
3549                 av_log(NULL, AV_LOG_ERROR, "Cannot map stream #%d.%d - unsupported type.\n",
3550                        map->file_index, map->stream_index);
3551                 exit_program(1);
3552             }
3553
3554             ost->source_index = input_files[map->file_index].ist_index + map->stream_index;
3555             ost->sync_ist = &input_streams[input_files[map->sync_file_index].ist_index +
3556                                            map->sync_stream_index];
3557             ist->discard = 0;
3558         }
3559     }
3560
3561     av_dict_copy(&oc->metadata, metadata, 0);
3562     av_dict_free(&metadata);
3563
3564
3565     output_files = grow_array(output_files, sizeof(*output_files), &nb_output_files, nb_output_files + 1);
3566     output_files[nb_output_files - 1].ctx       = oc;
3567     output_files[nb_output_files - 1].ost_index = nb_output_streams - oc->nb_streams;
3568     output_files[nb_output_files - 1].recording_time = recording_time;
3569     output_files[nb_output_files - 1].start_time     = start_time;
3570     av_dict_copy(&output_files[nb_output_files - 1].opts, format_opts, 0);
3571
3572     /* check filename in case of an image number is expected */
3573     if (oc->oformat->flags & AVFMT_NEEDNUMBER) {
3574         if (!av_filename_number_test(oc->filename)) {
3575             print_error(oc->filename, AVERROR(EINVAL));
3576             exit_program(1);
3577         }
3578     }
3579
3580     if (!(oc->oformat->flags & AVFMT_NOFILE)) {
3581         /* test if it already exists to avoid loosing precious files */
3582         if (!file_overwrite &&
3583             (strchr(filename, ':') == NULL ||
3584              filename[1] == ':' ||
3585              av_strstart(filename, "file:", NULL))) {
3586             if (avio_check(filename, 0) == 0) {
3587                 if (!using_stdin) {
3588                     fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3589                     fflush(stderr);
3590                     if (!read_yesno()) {
3591                         fprintf(stderr, "Not overwriting - exiting\n");
3592                         exit_program(1);
3593                     }
3594                 }
3595                 else {
3596                     fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
3597                     exit_program(1);
3598                 }
3599             }
3600         }
3601
3602         /* open the file */
3603         if ((err = avio_open(&oc->pb, filename, AVIO_FLAG_WRITE)) < 0) {
3604             print_error(filename, err);
3605             exit_program(1);
3606         }
3607     }
3608
3609     oc->preload= (int)(mux_preload*AV_TIME_BASE);
3610     oc->max_delay= (int)(mux_max_delay*AV_TIME_BASE);
3611     oc->flags |= AVFMT_FLAG_NONBLOCK;
3612
3613     /* copy chapters */
3614     if (chapters_input_file >= nb_input_files) {
3615         if (chapters_input_file == INT_MAX) {
3616             /* copy chapters from the first input file that has them*/
3617             chapters_input_file = -1;
3618             for (i = 0; i < nb_input_files; i++)
3619                 if (input_files[i].ctx->nb_chapters) {
3620                     chapters_input_file = i;
3621                     break;
3622                 }
3623         } else {
3624             av_log(NULL, AV_LOG_ERROR, "Invalid input file index %d in chapter mapping.\n",
3625                    chapters_input_file);
3626             exit_program(1);
3627         }
3628     }
3629     if (chapters_input_file >= 0)
3630         copy_chapters(chapters_input_file, nb_output_files - 1);
3631
3632     /* copy metadata */
3633     for (i = 0; i < nb_meta_data_maps; i++) {
3634         AVFormatContext *files[2];
3635         AVDictionary    **meta[2];
3636         int j;
3637
3638 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
3639         if ((index) < 0 || (index) >= (nb_elems)) {\
3640             av_log(NULL, AV_LOG_ERROR, "Invalid %s index %d while processing metadata maps\n",\
3641                      (desc), (index));\
3642             exit_program(1);\
3643         }
3644
3645         int in_file_index = meta_data_maps[i][1].file;
3646         if (in_file_index < 0)
3647             continue;
3648         METADATA_CHECK_INDEX(in_file_index, nb_input_files, "input file")
3649
3650         files[0] = oc;
3651         files[1] = input_files[in_file_index].ctx;
3652
3653         for (j = 0; j < 2; j++) {
3654             MetadataMap *map = &meta_data_maps[i][j];
3655
3656             switch (map->type) {
3657             case 'g':
3658                 meta[j] = &files[j]->metadata;
3659                 break;
3660             case 's':
3661                 METADATA_CHECK_INDEX(map->index, files[j]->nb_streams, "stream")
3662                 meta[j] = &files[j]->streams[map->index]->metadata;
3663                 break;
3664             case 'c':