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