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