avtools: reinitialise filter chain when input video stream changes dimensions
[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 #else
1215     if (resample_changed) {
1216         avfilter_graph_free(&ost->graph);
1217         if (configure_video_filters(ist, ost)) {
1218             fprintf(stderr, "Error reinitialising filters!\n");
1219             exit_program(1);
1220         }
1221     }
1222 #endif
1223     if (resample_changed) {
1224         ost->resample_width   = dec->width;
1225         ost->resample_height  = dec->height;
1226         ost->resample_pix_fmt = dec->pix_fmt;
1227     }
1228
1229     /* duplicates frame if needed */
1230     for(i=0;i<nb_frames;i++) {
1231         AVPacket pkt;
1232         av_init_packet(&pkt);
1233         pkt.stream_index= ost->index;
1234
1235         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1236             /* raw pictures are written as AVPicture structure to
1237                avoid any copies. We support temorarily the older
1238                method. */
1239             AVFrame* old_frame = enc->coded_frame;
1240             enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
1241             pkt.data= (uint8_t *)final_picture;
1242             pkt.size=  sizeof(AVPicture);
1243             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1244             pkt.flags |= AV_PKT_FLAG_KEY;
1245
1246             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1247             enc->coded_frame = old_frame;
1248         } else {
1249             AVFrame big_picture;
1250
1251             big_picture= *final_picture;
1252             /* better than nothing: use input picture interlaced
1253                settings */
1254             big_picture.interlaced_frame = in_picture->interlaced_frame;
1255             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1256                 if(top_field_first == -1)
1257                     big_picture.top_field_first = in_picture->top_field_first;
1258                 else
1259                     big_picture.top_field_first = top_field_first;
1260             }
1261
1262             /* handles sameq here. This is not correct because it may
1263                not be a global option */
1264             big_picture.quality = quality;
1265             if(!me_threshold)
1266                 big_picture.pict_type = 0;
1267 //            big_picture.pts = AV_NOPTS_VALUE;
1268             big_picture.pts= ost->sync_opts;
1269 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1270 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1271             if (ost->forced_kf_index < ost->forced_kf_count &&
1272                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1273                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1274                 ost->forced_kf_index++;
1275             }
1276             ret = avcodec_encode_video(enc,
1277                                        bit_buffer, bit_buffer_size,
1278                                        &big_picture);
1279             if (ret < 0) {
1280                 fprintf(stderr, "Video encoding failed\n");
1281                 exit_program(1);
1282             }
1283
1284             if(ret>0){
1285                 pkt.data= bit_buffer;
1286                 pkt.size= ret;
1287                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1288                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1289 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1290    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1291    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1292
1293                 if(enc->coded_frame->key_frame)
1294                     pkt.flags |= AV_PKT_FLAG_KEY;
1295                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1296                 *frame_size = ret;
1297                 video_size += ret;
1298                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1299                 //        enc->frame_number-1, ret, enc->pict_type);
1300                 /* if two pass, output log */
1301                 if (ost->logfile && enc->stats_out) {
1302                     fprintf(ost->logfile, "%s", enc->stats_out);
1303                 }
1304             }
1305         }
1306         ost->sync_opts++;
1307         ost->frame_number++;
1308     }
1309 }
1310
1311 static double psnr(double d){
1312     return -10.0*log(d)/log(10.0);
1313 }
1314
1315 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1316                            int frame_size)
1317 {
1318     AVCodecContext *enc;
1319     int frame_number;
1320     double ti1, bitrate, avg_bitrate;
1321
1322     /* this is executed just the first time do_video_stats is called */
1323     if (!vstats_file) {
1324         vstats_file = fopen(vstats_filename, "w");
1325         if (!vstats_file) {
1326             perror("fopen");
1327             exit_program(1);
1328         }
1329     }
1330
1331     enc = ost->st->codec;
1332     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1333         frame_number = ost->frame_number;
1334         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1335         if (enc->flags&CODEC_FLAG_PSNR)
1336             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1337
1338         fprintf(vstats_file,"f_size= %6d ", frame_size);
1339         /* compute pts value */
1340         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1341         if (ti1 < 0.01)
1342             ti1 = 0.01;
1343
1344         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1345         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1346         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1347             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1348         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1349     }
1350 }
1351
1352 static void print_report(AVFormatContext **output_files,
1353                          OutputStream **ost_table, int nb_ostreams,
1354                          int is_last_report)
1355 {
1356     char buf[1024];
1357     OutputStream *ost;
1358     AVFormatContext *oc;
1359     int64_t total_size;
1360     AVCodecContext *enc;
1361     int frame_number, vid, i;
1362     double bitrate, ti1, pts;
1363     static int64_t last_time = -1;
1364     static int qp_histogram[52];
1365
1366     if (!is_last_report) {
1367         int64_t cur_time;
1368         /* display the report every 0.5 seconds */
1369         cur_time = av_gettime();
1370         if (last_time == -1) {
1371             last_time = cur_time;
1372             return;
1373         }
1374         if ((cur_time - last_time) < 500000)
1375             return;
1376         last_time = cur_time;
1377     }
1378
1379
1380     oc = output_files[0];
1381
1382     total_size = avio_size(oc->pb);
1383     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1384         total_size= avio_tell(oc->pb);
1385
1386     buf[0] = '\0';
1387     ti1 = 1e10;
1388     vid = 0;
1389     for(i=0;i<nb_ostreams;i++) {
1390         float q = -1;
1391         ost = ost_table[i];
1392         enc = ost->st->codec;
1393         if (!ost->st->stream_copy && enc->coded_frame)
1394             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1395         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1396             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1397         }
1398         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1399             float t = (av_gettime()-timer_start) / 1000000.0;
1400
1401             frame_number = ost->frame_number;
1402             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1403                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1404             if(is_last_report)
1405                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1406             if(qp_hist){
1407                 int j;
1408                 int qp = lrintf(q);
1409                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1410                     qp_histogram[qp]++;
1411                 for(j=0; j<32; j++)
1412                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1413             }
1414             if (enc->flags&CODEC_FLAG_PSNR){
1415                 int j;
1416                 double error, error_sum=0;
1417                 double scale, scale_sum=0;
1418                 char type[3]= {'Y','U','V'};
1419                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1420                 for(j=0; j<3; j++){
1421                     if(is_last_report){
1422                         error= enc->error[j];
1423                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1424                     }else{
1425                         error= enc->coded_frame->error[j];
1426                         scale= enc->width*enc->height*255.0*255.0;
1427                     }
1428                     if(j) scale/=4;
1429                     error_sum += error;
1430                     scale_sum += scale;
1431                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1432                 }
1433                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1434             }
1435             vid = 1;
1436         }
1437         /* compute min output value */
1438         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1439         if ((pts < ti1) && (pts > 0))
1440             ti1 = pts;
1441     }
1442     if (ti1 < 0.01)
1443         ti1 = 0.01;
1444
1445     if (verbose > 0 || is_last_report) {
1446         bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1447
1448         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1449             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1450             (double)total_size / 1024, ti1, bitrate);
1451
1452         if (nb_frames_dup || nb_frames_drop)
1453           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1454                   nb_frames_dup, nb_frames_drop);
1455
1456         if (verbose >= 0)
1457             fprintf(stderr, "%s    \r", buf);
1458
1459         fflush(stderr);
1460     }
1461
1462     if (is_last_report && verbose >= 0){
1463         int64_t raw= audio_size + video_size + extra_size;
1464         fprintf(stderr, "\n");
1465         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1466                 video_size/1024.0,
1467                 audio_size/1024.0,
1468                 extra_size/1024.0,
1469                 100.0*(total_size - raw)/raw
1470         );
1471     }
1472 }
1473
1474 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1475 {
1476     int fill_char = 0x00;
1477     if (sample_fmt == AV_SAMPLE_FMT_U8)
1478         fill_char = 0x80;
1479     memset(buf, fill_char, size);
1480 }
1481
1482 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1483 static int output_packet(InputStream *ist, int ist_index,
1484                          OutputStream **ost_table, int nb_ostreams,
1485                          const AVPacket *pkt)
1486 {
1487     AVFormatContext *os;
1488     OutputStream *ost;
1489     int ret, i;
1490     int got_output;
1491     AVFrame picture;
1492     void *buffer_to_free = NULL;
1493     static unsigned int samples_size= 0;
1494     AVSubtitle subtitle, *subtitle_to_free;
1495     int64_t pkt_pts = AV_NOPTS_VALUE;
1496 #if CONFIG_AVFILTER
1497     int frame_available;
1498 #endif
1499     float quality;
1500
1501     AVPacket avpkt;
1502     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1503
1504     if(ist->next_pts == AV_NOPTS_VALUE)
1505         ist->next_pts= ist->pts;
1506
1507     if (pkt == NULL) {
1508         /* EOF handling */
1509         av_init_packet(&avpkt);
1510         avpkt.data = NULL;
1511         avpkt.size = 0;
1512         goto handle_eof;
1513     } else {
1514         avpkt = *pkt;
1515     }
1516
1517     if(pkt->dts != AV_NOPTS_VALUE)
1518         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1519     if(pkt->pts != AV_NOPTS_VALUE)
1520         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1521
1522     //while we have more to decode or while the decoder did output something on EOF
1523     while (avpkt.size > 0 || (!pkt && got_output)) {
1524         uint8_t *data_buf, *decoded_data_buf;
1525         int data_size, decoded_data_size;
1526     handle_eof:
1527         ist->pts= ist->next_pts;
1528
1529         if(avpkt.size && avpkt.size != pkt->size &&
1530            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1531             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1532             ist->showed_multi_packet_warning=1;
1533         }
1534
1535         /* decode the packet if needed */
1536         decoded_data_buf = NULL; /* fail safe */
1537         decoded_data_size= 0;
1538         data_buf  = avpkt.data;
1539         data_size = avpkt.size;
1540         subtitle_to_free = NULL;
1541         if (ist->decoding_needed) {
1542             switch(ist->st->codec->codec_type) {
1543             case AVMEDIA_TYPE_AUDIO:{
1544                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1545                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1546                     av_free(samples);
1547                     samples= av_malloc(samples_size);
1548                 }
1549                 decoded_data_size= samples_size;
1550                     /* XXX: could avoid copy if PCM 16 bits with same
1551                        endianness as CPU */
1552                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1553                                             &avpkt);
1554                 if (ret < 0)
1555                     return ret;
1556                 avpkt.data += ret;
1557                 avpkt.size -= ret;
1558                 data_size   = ret;
1559                 got_output  = decoded_data_size > 0;
1560                 /* Some bug in mpeg audio decoder gives */
1561                 /* decoded_data_size < 0, it seems they are overflows */
1562                 if (!got_output) {
1563                     /* no audio frame */
1564                     continue;
1565                 }
1566                 decoded_data_buf = (uint8_t *)samples;
1567                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1568                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1569                 break;}
1570             case AVMEDIA_TYPE_VIDEO:
1571                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1572                     /* XXX: allocate picture correctly */
1573                     avcodec_get_frame_defaults(&picture);
1574                     avpkt.pts = pkt_pts;
1575                     avpkt.dts = ist->pts;
1576                     pkt_pts = AV_NOPTS_VALUE;
1577
1578                     ret = avcodec_decode_video2(ist->st->codec,
1579                                                 &picture, &got_output, &avpkt);
1580                     quality = same_quality ? picture.quality : 0;
1581                     if (ret < 0)
1582                         return ret;
1583                     if (!got_output) {
1584                         /* no picture yet */
1585                         goto discard_packet;
1586                     }
1587                     ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, picture.pkt_pts, picture.pkt_dts);
1588                     if (ist->st->codec->time_base.num != 0) {
1589                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1590                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1591                                           ist->st->codec->time_base.num * ticks) /
1592                             ist->st->codec->time_base.den;
1593                     }
1594                     avpkt.size = 0;
1595                     buffer_to_free = NULL;
1596                     pre_process_video_frame(ist, (AVPicture *)&picture, &buffer_to_free);
1597                     break;
1598             case AVMEDIA_TYPE_SUBTITLE:
1599                 ret = avcodec_decode_subtitle2(ist->st->codec,
1600                                                &subtitle, &got_output, &avpkt);
1601                 if (ret < 0)
1602                     return ret;
1603                 if (!got_output) {
1604                     goto discard_packet;
1605                 }
1606                 subtitle_to_free = &subtitle;
1607                 avpkt.size = 0;
1608                 break;
1609             default:
1610                 return -1;
1611             }
1612         } else {
1613             switch(ist->st->codec->codec_type) {
1614             case AVMEDIA_TYPE_AUDIO:
1615                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1616                     ist->st->codec->sample_rate;
1617                 break;
1618             case AVMEDIA_TYPE_VIDEO:
1619                 if (ist->st->codec->time_base.num != 0) {
1620                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1621                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1622                                       ist->st->codec->time_base.num * ticks) /
1623                         ist->st->codec->time_base.den;
1624                 }
1625                 break;
1626             }
1627             ret = avpkt.size;
1628             avpkt.size = 0;
1629         }
1630
1631 #if CONFIG_AVFILTER
1632         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1633             for (i = 0; i < nb_ostreams; i++) {
1634                 ost = ost_table[i];
1635                 if (ost->input_video_filter && ost->source_index == ist_index) {
1636                     AVRational sar;
1637                     if (ist->st->sample_aspect_ratio.num)
1638                         sar = ist->st->sample_aspect_ratio;
1639                     else
1640                         sar = ist->st->codec->sample_aspect_ratio;
1641                     // add it to be filtered
1642                     av_vsrc_buffer_add_frame(ost->input_video_filter, &picture,
1643                                              ist->pts,
1644                                              sar);
1645                 }
1646             }
1647         }
1648 #endif
1649
1650         // preprocess audio (volume)
1651         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1652             if (audio_volume != 256) {
1653                 short *volp;
1654                 volp = samples;
1655                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1656                     int v = ((*volp) * audio_volume + 128) >> 8;
1657                     if (v < -32768) v = -32768;
1658                     if (v >  32767) v = 32767;
1659                     *volp++ = v;
1660                 }
1661             }
1662         }
1663
1664         /* frame rate emulation */
1665         if (rate_emu) {
1666             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1667             int64_t now = av_gettime() - ist->start;
1668             if (pts > now)
1669                 usleep(pts - now);
1670         }
1671         /* if output time reached then transcode raw format,
1672            encode packets and output them */
1673         if (start_time == 0 || ist->pts >= start_time)
1674             for(i=0;i<nb_ostreams;i++) {
1675                 int frame_size;
1676
1677                 ost = ost_table[i];
1678                 if (ost->source_index == ist_index) {
1679 #if CONFIG_AVFILTER
1680                 frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1681                     !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1682                 while (frame_available) {
1683                     AVRational ist_pts_tb;
1684                     if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter)
1685                         get_filtered_video_frame(ost->output_video_filter, &picture, &ost->picref, &ist_pts_tb);
1686                     if (ost->picref)
1687                         ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1688 #endif
1689                     os = output_files[ost->file_index];
1690
1691                     /* set the input output pts pairs */
1692                     //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
1693
1694                     if (ost->encoding_needed) {
1695                         av_assert0(ist->decoding_needed);
1696                         switch(ost->st->codec->codec_type) {
1697                         case AVMEDIA_TYPE_AUDIO:
1698                             do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1699                             break;
1700                         case AVMEDIA_TYPE_VIDEO:
1701 #if CONFIG_AVFILTER
1702                             if (ost->picref->video && !ost->frame_aspect_ratio)
1703                                 ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
1704 #endif
1705                             do_video_out(os, ost, ist, &picture, &frame_size,
1706                                          same_quality ? quality : ost->st->codec->global_quality);
1707                             if (vstats_filename && frame_size)
1708                                 do_video_stats(os, ost, frame_size);
1709                             break;
1710                         case AVMEDIA_TYPE_SUBTITLE:
1711                             do_subtitle_out(os, ost, ist, &subtitle,
1712                                             pkt->pts);
1713                             break;
1714                         default:
1715                             abort();
1716                         }
1717                     } else {
1718                         AVFrame avframe; //FIXME/XXX remove this
1719                         AVPacket opkt;
1720                         int64_t ost_tb_start_time= av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1721
1722                         av_init_packet(&opkt);
1723
1724                         if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1725 #if !CONFIG_AVFILTER
1726                             continue;
1727 #else
1728                             goto cont;
1729 #endif
1730
1731                         /* no reencoding needed : output the packet directly */
1732                         /* force the input stream PTS */
1733
1734                         avcodec_get_frame_defaults(&avframe);
1735                         ost->st->codec->coded_frame= &avframe;
1736                         avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1737
1738                         if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1739                             audio_size += data_size;
1740                         else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1741                             video_size += data_size;
1742                             ost->sync_opts++;
1743                         }
1744
1745                         opkt.stream_index= ost->index;
1746                         if(pkt->pts != AV_NOPTS_VALUE)
1747                             opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1748                         else
1749                             opkt.pts= AV_NOPTS_VALUE;
1750
1751                         if (pkt->dts == AV_NOPTS_VALUE)
1752                             opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1753                         else
1754                             opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1755                         opkt.dts -= ost_tb_start_time;
1756
1757                         opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1758                         opkt.flags= pkt->flags;
1759
1760                         //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1761                         if(   ost->st->codec->codec_id != CODEC_ID_H264
1762                            && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1763                            && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1764                            ) {
1765                             if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1766                                 opkt.destruct= av_destruct_packet;
1767                         } else {
1768                             opkt.data = data_buf;
1769                             opkt.size = data_size;
1770                         }
1771
1772                         write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1773                         ost->st->codec->frame_number++;
1774                         ost->frame_number++;
1775                         av_free_packet(&opkt);
1776                     }
1777 #if CONFIG_AVFILTER
1778                     cont:
1779                     frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1780                                        ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1781                     if (ost->picref)
1782                         avfilter_unref_buffer(ost->picref);
1783                 }
1784 #endif
1785                 }
1786             }
1787
1788         av_free(buffer_to_free);
1789         /* XXX: allocate the subtitles in the codec ? */
1790         if (subtitle_to_free) {
1791             avsubtitle_free(subtitle_to_free);
1792             subtitle_to_free = NULL;
1793         }
1794     }
1795  discard_packet:
1796     if (pkt == NULL) {
1797         /* EOF handling */
1798
1799         for(i=0;i<nb_ostreams;i++) {
1800             ost = ost_table[i];
1801             if (ost->source_index == ist_index) {
1802                 AVCodecContext *enc= ost->st->codec;
1803                 os = output_files[ost->file_index];
1804
1805                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1806                     continue;
1807                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1808                     continue;
1809
1810                 if (ost->encoding_needed) {
1811                     for(;;) {
1812                         AVPacket pkt;
1813                         int fifo_bytes;
1814                         av_init_packet(&pkt);
1815                         pkt.stream_index= ost->index;
1816
1817                         switch(ost->st->codec->codec_type) {
1818                         case AVMEDIA_TYPE_AUDIO:
1819                             fifo_bytes = av_fifo_size(ost->fifo);
1820                             ret = 0;
1821                             /* encode any samples remaining in fifo */
1822                             if (fifo_bytes > 0) {
1823                                 int osize = av_get_bytes_per_sample(enc->sample_fmt);
1824                                 int fs_tmp = enc->frame_size;
1825
1826                                 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1827                                 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1828                                     enc->frame_size = fifo_bytes / (osize * enc->channels);
1829                                 } else { /* pad */
1830                                     int frame_bytes = enc->frame_size*osize*enc->channels;
1831                                     if (allocated_audio_buf_size < frame_bytes)
1832                                         exit_program(1);
1833                                     generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1834                                 }
1835
1836                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1837                                 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1838                                                           ost->st->time_base.num, enc->sample_rate);
1839                                 enc->frame_size = fs_tmp;
1840                             }
1841                             if(ret <= 0) {
1842                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1843                             }
1844                             if (ret < 0) {
1845                                 fprintf(stderr, "Audio encoding failed\n");
1846                                 exit_program(1);
1847                             }
1848                             audio_size += ret;
1849                             pkt.flags |= AV_PKT_FLAG_KEY;
1850                             break;
1851                         case AVMEDIA_TYPE_VIDEO:
1852                             ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1853                             if (ret < 0) {
1854                                 fprintf(stderr, "Video encoding failed\n");
1855                                 exit_program(1);
1856                             }
1857                             video_size += ret;
1858                             if(enc->coded_frame && enc->coded_frame->key_frame)
1859                                 pkt.flags |= AV_PKT_FLAG_KEY;
1860                             if (ost->logfile && enc->stats_out) {
1861                                 fprintf(ost->logfile, "%s", enc->stats_out);
1862                             }
1863                             break;
1864                         default:
1865                             ret=-1;
1866                         }
1867
1868                         if(ret<=0)
1869                             break;
1870                         pkt.data= bit_buffer;
1871                         pkt.size= ret;
1872                         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1873                             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1874                         write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1875                     }
1876                 }
1877             }
1878         }
1879     }
1880
1881     return 0;
1882 }
1883
1884 static void print_sdp(AVFormatContext **avc, int n)
1885 {
1886     char sdp[2048];
1887
1888     av_sdp_create(avc, n, sdp, sizeof(sdp));
1889     printf("SDP:\n%s\n", sdp);
1890     fflush(stdout);
1891 }
1892
1893 static int copy_chapters(int infile, int outfile)
1894 {
1895     AVFormatContext *is = input_files[infile].ctx;
1896     AVFormatContext *os = output_files[outfile];
1897     int i;
1898
1899     for (i = 0; i < is->nb_chapters; i++) {
1900         AVChapter *in_ch = is->chapters[i], *out_ch;
1901         int64_t ts_off   = av_rescale_q(start_time - input_files[infile].ts_offset,
1902                                       AV_TIME_BASE_Q, in_ch->time_base);
1903         int64_t rt       = (recording_time == INT64_MAX) ? INT64_MAX :
1904                            av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
1905
1906
1907         if (in_ch->end < ts_off)
1908             continue;
1909         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
1910             break;
1911
1912         out_ch = av_mallocz(sizeof(AVChapter));
1913         if (!out_ch)
1914             return AVERROR(ENOMEM);
1915
1916         out_ch->id        = in_ch->id;
1917         out_ch->time_base = in_ch->time_base;
1918         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
1919         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
1920
1921         if (metadata_chapters_autocopy)
1922             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
1923
1924         os->nb_chapters++;
1925         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
1926         if (!os->chapters)
1927             return AVERROR(ENOMEM);
1928         os->chapters[os->nb_chapters - 1] = out_ch;
1929     }
1930     return 0;
1931 }
1932
1933 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1934                                     AVCodecContext *avctx)
1935 {
1936     char *p;
1937     int n = 1, i;
1938     int64_t t;
1939
1940     for (p = kf; *p; p++)
1941         if (*p == ',')
1942             n++;
1943     ost->forced_kf_count = n;
1944     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1945     if (!ost->forced_kf_pts) {
1946         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1947         exit_program(1);
1948     }
1949     for (i = 0; i < n; i++) {
1950         p = i ? strchr(p, ',') + 1 : kf;
1951         t = parse_time_or_die("force_key_frames", p, 1);
1952         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1953     }
1954 }
1955
1956 /*
1957  * The following code is the main loop of the file converter
1958  */
1959 static int transcode(AVFormatContext **output_files,
1960                      int nb_output_files,
1961                      InputFile *input_files,
1962                      int nb_input_files)
1963 {
1964     int ret = 0, i, j, k, n, nb_ostreams = 0;
1965     AVFormatContext *is, *os;
1966     AVCodecContext *codec, *icodec;
1967     OutputStream *ost, **ost_table = NULL;
1968     InputStream *ist;
1969     char error[1024];
1970     int want_sdp = 1;
1971     uint8_t no_packet[MAX_FILES]={0};
1972     int no_packet_count=0;
1973
1974     if (rate_emu)
1975         for (i = 0; i < nb_input_streams; i++)
1976             input_streams[i].start = av_gettime();
1977
1978     /* output stream init */
1979     nb_ostreams = 0;
1980     for(i=0;i<nb_output_files;i++) {
1981         os = output_files[i];
1982         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1983             av_dump_format(output_files[i], i, output_files[i]->filename, 1);
1984             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
1985             ret = AVERROR(EINVAL);
1986             goto fail;
1987         }
1988         nb_ostreams += os->nb_streams;
1989     }
1990
1991     ost_table = av_mallocz(sizeof(OutputStream *) * nb_ostreams);
1992     if (!ost_table)
1993         goto fail;
1994     n = 0;
1995     for(k=0;k<nb_output_files;k++) {
1996         os = output_files[k];
1997         for (i = 0; i < os->nb_streams; i++, n++)
1998             ost_table[n] = output_streams_for_file[k][i];
1999     }
2000
2001     /* for each output stream, we compute the right encoding parameters */
2002     for(i=0;i<nb_ostreams;i++) {
2003         ost = ost_table[i];
2004         os = output_files[ost->file_index];
2005         ist = &input_streams[ost->source_index];
2006
2007         codec = ost->st->codec;
2008         icodec = ist->st->codec;
2009
2010         ost->st->disposition = ist->st->disposition;
2011         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2012         codec->chroma_sample_location = icodec->chroma_sample_location;
2013
2014         if (ost->st->stream_copy) {
2015             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2016
2017             if (extra_size > INT_MAX)
2018                 goto fail;
2019
2020             /* if stream_copy is selected, no need to decode or encode */
2021             codec->codec_id = icodec->codec_id;
2022             codec->codec_type = icodec->codec_type;
2023
2024             if(!codec->codec_tag){
2025                 if(   !os->oformat->codec_tag
2026                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2027                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2028                     codec->codec_tag = icodec->codec_tag;
2029             }
2030
2031             codec->bit_rate = icodec->bit_rate;
2032             codec->rc_max_rate    = icodec->rc_max_rate;
2033             codec->rc_buffer_size = icodec->rc_buffer_size;
2034             codec->extradata= av_mallocz(extra_size);
2035             if (!codec->extradata)
2036                 goto fail;
2037             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2038             codec->extradata_size= icodec->extradata_size;
2039             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){
2040                 codec->time_base = icodec->time_base;
2041                 codec->time_base.num *= icodec->ticks_per_frame;
2042                 av_reduce(&codec->time_base.num, &codec->time_base.den,
2043                           codec->time_base.num, codec->time_base.den, INT_MAX);
2044             }else
2045                 codec->time_base = ist->st->time_base;
2046             switch(codec->codec_type) {
2047             case AVMEDIA_TYPE_AUDIO:
2048                 if(audio_volume != 256) {
2049                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2050                     exit_program(1);
2051                 }
2052                 codec->channel_layout = icodec->channel_layout;
2053                 codec->sample_rate = icodec->sample_rate;
2054                 codec->channels = icodec->channels;
2055                 codec->frame_size = icodec->frame_size;
2056                 codec->audio_service_type = icodec->audio_service_type;
2057                 codec->block_align= icodec->block_align;
2058                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2059                     codec->block_align= 0;
2060                 if(codec->codec_id == CODEC_ID_AC3)
2061                     codec->block_align= 0;
2062                 break;
2063             case AVMEDIA_TYPE_VIDEO:
2064                 codec->pix_fmt = icodec->pix_fmt;
2065                 codec->width = icodec->width;
2066                 codec->height = icodec->height;
2067                 codec->has_b_frames = icodec->has_b_frames;
2068                 if (!codec->sample_aspect_ratio.num) {
2069                     codec->sample_aspect_ratio =
2070                     ost->st->sample_aspect_ratio =
2071                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2072                         ist->st->codec->sample_aspect_ratio.num ?
2073                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2074                 }
2075                 break;
2076             case AVMEDIA_TYPE_SUBTITLE:
2077                 codec->width = icodec->width;
2078                 codec->height = icodec->height;
2079                 break;
2080             case AVMEDIA_TYPE_DATA:
2081                 break;
2082             default:
2083                 abort();
2084             }
2085         } else {
2086             if (!ost->enc)
2087                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2088             switch(codec->codec_type) {
2089             case AVMEDIA_TYPE_AUDIO:
2090                 ost->fifo= av_fifo_alloc(1024);
2091                 if(!ost->fifo)
2092                     goto fail;
2093                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2094                 if (!codec->sample_rate) {
2095                     codec->sample_rate = icodec->sample_rate;
2096                     if (icodec->lowres)
2097                         codec->sample_rate >>= icodec->lowres;
2098                 }
2099                 choose_sample_rate(ost->st, ost->enc);
2100                 codec->time_base = (AVRational){1, codec->sample_rate};
2101                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2102                     codec->sample_fmt = icodec->sample_fmt;
2103                 choose_sample_fmt(ost->st, ost->enc);
2104                 if (!codec->channels)
2105                     codec->channels = icodec->channels;
2106                 codec->channel_layout = icodec->channel_layout;
2107                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2108                     codec->channel_layout = 0;
2109                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2110                 icodec->request_channels = codec->channels;
2111                 ist->decoding_needed = 1;
2112                 ost->encoding_needed = 1;
2113                 ost->resample_sample_fmt  = icodec->sample_fmt;
2114                 ost->resample_sample_rate = icodec->sample_rate;
2115                 ost->resample_channels    = icodec->channels;
2116                 break;
2117             case AVMEDIA_TYPE_VIDEO:
2118                 if (codec->pix_fmt == PIX_FMT_NONE)
2119                     codec->pix_fmt = icodec->pix_fmt;
2120                 choose_pixel_fmt(ost->st, ost->enc);
2121
2122                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2123                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2124                     exit_program(1);
2125                 }
2126
2127                 if (!codec->width || !codec->height) {
2128                     codec->width  = icodec->width;
2129                     codec->height = icodec->height;
2130                 }
2131
2132                 ost->video_resample = codec->width   != icodec->width  ||
2133                                       codec->height  != icodec->height ||
2134                                       codec->pix_fmt != icodec->pix_fmt;
2135                 if (ost->video_resample) {
2136 #if !CONFIG_AVFILTER
2137                     avcodec_get_frame_defaults(&ost->pict_tmp);
2138                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2139                                        codec->width, codec->height)) {
2140                         fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
2141                         exit_program(1);
2142                     }
2143                     ost->img_resample_ctx = sws_getContext(
2144                         icodec->width,
2145                         icodec->height,
2146                         icodec->pix_fmt,
2147                         codec->width,
2148                         codec->height,
2149                         codec->pix_fmt,
2150                         ost->sws_flags, NULL, NULL, NULL);
2151                     if (ost->img_resample_ctx == NULL) {
2152                         fprintf(stderr, "Cannot get resampling context\n");
2153                         exit_program(1);
2154                     }
2155 #endif
2156                     codec->bits_per_raw_sample= 0;
2157                 }
2158
2159                 ost->resample_height = icodec->height;
2160                 ost->resample_width  = icodec->width;
2161                 ost->resample_pix_fmt= icodec->pix_fmt;
2162                 ost->encoding_needed = 1;
2163                 ist->decoding_needed = 1;
2164
2165                 if (!ost->frame_rate.num)
2166                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2167                 if (ost->enc && ost->enc->supported_framerates && !force_fps) {
2168                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2169                     ost->frame_rate = ost->enc->supported_framerates[idx];
2170                 }
2171                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2172
2173 #if CONFIG_AVFILTER
2174                 if (configure_video_filters(ist, ost)) {
2175                     fprintf(stderr, "Error opening filters!\n");
2176                     exit(1);
2177                 }
2178 #endif
2179                 break;
2180             case AVMEDIA_TYPE_SUBTITLE:
2181                 ost->encoding_needed = 1;
2182                 ist->decoding_needed = 1;
2183                 break;
2184             default:
2185                 abort();
2186                 break;
2187             }
2188             /* two pass mode */
2189             if (ost->encoding_needed &&
2190                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2191                 char logfilename[1024];
2192                 FILE *f;
2193
2194                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2195                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2196                          i);
2197                 if (codec->flags & CODEC_FLAG_PASS1) {
2198                     f = fopen(logfilename, "wb");
2199                     if (!f) {
2200                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2201                         exit_program(1);
2202                     }
2203                     ost->logfile = f;
2204                 } else {
2205                     char  *logbuffer;
2206                     size_t logbuffer_size;
2207                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2208                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2209                         exit_program(1);
2210                     }
2211                     codec->stats_in = logbuffer;
2212                 }
2213             }
2214         }
2215         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2216             int size= codec->width * codec->height;
2217             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2218         }
2219     }
2220
2221     if (!bit_buffer)
2222         bit_buffer = av_malloc(bit_buffer_size);
2223     if (!bit_buffer) {
2224         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2225                 bit_buffer_size);
2226         ret = AVERROR(ENOMEM);
2227         goto fail;
2228     }
2229
2230     /* open each encoder */
2231     for(i=0;i<nb_ostreams;i++) {
2232         ost = ost_table[i];
2233         if (ost->encoding_needed) {
2234             AVCodec *codec = ost->enc;
2235             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2236             if (!codec) {
2237                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2238                          ost->st->codec->codec_id, ost->file_index, ost->index);
2239                 ret = AVERROR(EINVAL);
2240                 goto dump_format;
2241             }
2242             if (dec->subtitle_header) {
2243                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2244                 if (!ost->st->codec->subtitle_header) {
2245                     ret = AVERROR(ENOMEM);
2246                     goto dump_format;
2247                 }
2248                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2249                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2250             }
2251             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2252                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2253                         ost->file_index, ost->index);
2254                 ret = AVERROR(EINVAL);
2255                 goto dump_format;
2256             }
2257             assert_codec_experimental(ost->st->codec, 1);
2258             assert_avoptions(ost->opts);
2259             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2260                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2261                                              "It takes bits/s as argument, not kbits/s\n");
2262             extra_size += ost->st->codec->extradata_size;
2263         }
2264     }
2265
2266     /* open each decoder */
2267     for (i = 0; i < nb_input_streams; i++) {
2268         ist = &input_streams[i];
2269         if (ist->decoding_needed) {
2270             AVCodec *codec = ist->dec;
2271             if (!codec)
2272                 codec = avcodec_find_decoder(ist->st->codec->codec_id);
2273             if (!codec) {
2274                 snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
2275                         ist->st->codec->codec_id, ist->file_index, ist->st->index);
2276                 ret = AVERROR(EINVAL);
2277                 goto dump_format;
2278             }
2279
2280             /* update requested sample format for the decoder based on the
2281                corresponding encoder sample format */
2282             for (j = 0; j < nb_ostreams; j++) {
2283                 ost = ost_table[j];
2284                 if (ost->source_index == i) {
2285                     update_sample_fmt(ist->st->codec, codec, ost->st->codec);
2286                     break;
2287                 }
2288             }
2289
2290             if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2291                 snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
2292                         ist->file_index, ist->st->index);
2293                 ret = AVERROR(EINVAL);
2294                 goto dump_format;
2295             }
2296             assert_codec_experimental(ist->st->codec, 0);
2297             assert_avoptions(ost->opts);
2298             //if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2299             //    ist->st->codec->flags |= CODEC_FLAG_REPEAT_FIELD;
2300         }
2301     }
2302
2303     /* init pts */
2304     for (i = 0; i < nb_input_streams; i++) {
2305         AVStream *st;
2306         ist = &input_streams[i];
2307         st= ist->st;
2308         ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
2309         ist->next_pts = AV_NOPTS_VALUE;
2310         init_pts_correction(&ist->pts_ctx);
2311         ist->is_start = 1;
2312     }
2313
2314     /* open files and write file headers */
2315     for(i=0;i<nb_output_files;i++) {
2316         os = output_files[i];
2317         if (avformat_write_header(os, &output_opts[i]) < 0) {
2318             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2319             ret = AVERROR(EINVAL);
2320             goto dump_format;
2321         }
2322         assert_avoptions(output_opts[i]);
2323         if (strcmp(output_files[i]->oformat->name, "rtp")) {
2324             want_sdp = 0;
2325         }
2326     }
2327
2328  dump_format:
2329     /* dump the file output parameters - cannot be done before in case
2330        of stream copy */
2331     for(i=0;i<nb_output_files;i++) {
2332         av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2333     }
2334
2335     /* dump the stream mapping */
2336     if (verbose >= 0) {
2337         fprintf(stderr, "Stream mapping:\n");
2338         for(i=0;i<nb_ostreams;i++) {
2339             ost = ost_table[i];
2340             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2341                     input_streams[ost->source_index].file_index,
2342                     input_streams[ost->source_index].st->index,
2343                     ost->file_index,
2344                     ost->index);
2345             if (ost->sync_ist != &input_streams[ost->source_index])
2346                 fprintf(stderr, " [sync #%d.%d]",
2347                         ost->sync_ist->file_index,
2348                         ost->sync_ist->st->index);
2349             fprintf(stderr, "\n");
2350         }
2351     }
2352
2353     if (ret) {
2354         fprintf(stderr, "%s\n", error);
2355         goto fail;
2356     }
2357
2358     if (want_sdp) {
2359         print_sdp(output_files, nb_output_files);
2360     }
2361
2362     if (verbose >= 0)
2363         fprintf(stderr, "Press ctrl-c to stop encoding\n");
2364     term_init();
2365
2366     timer_start = av_gettime();
2367
2368     for(; received_sigterm == 0;) {
2369         int file_index, ist_index;
2370         AVPacket pkt;
2371         double ipts_min;
2372         double opts_min;
2373
2374     redo:
2375         ipts_min= 1e100;
2376         opts_min= 1e100;
2377
2378         /* select the stream that we must read now by looking at the
2379            smallest output pts */
2380         file_index = -1;
2381         for(i=0;i<nb_ostreams;i++) {
2382             double ipts, opts;
2383             ost = ost_table[i];
2384             os = output_files[ost->file_index];
2385             ist = &input_streams[ost->source_index];
2386             if(ist->is_past_recording_time || no_packet[ist->file_index])
2387                 continue;
2388                 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2389             ipts = (double)ist->pts;
2390             if (!input_files[ist->file_index].eof_reached){
2391                 if(ipts < ipts_min) {
2392                     ipts_min = ipts;
2393                     if(input_sync ) file_index = ist->file_index;
2394                 }
2395                 if(opts < opts_min) {
2396                     opts_min = opts;
2397                     if(!input_sync) file_index = ist->file_index;
2398                 }
2399             }
2400             if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
2401                 file_index= -1;
2402                 break;
2403             }
2404         }
2405         /* if none, if is finished */
2406         if (file_index < 0) {
2407             if(no_packet_count){
2408                 no_packet_count=0;
2409                 memset(no_packet, 0, sizeof(no_packet));
2410                 usleep(10000);
2411                 continue;
2412             }
2413             break;
2414         }
2415
2416         /* finish if limit size exhausted */
2417         if (limit_filesize != 0 && limit_filesize <= avio_tell(output_files[0]->pb))
2418             break;
2419
2420         /* read a frame from it and output it in the fifo */
2421         is = input_files[file_index].ctx;
2422         ret= av_read_frame(is, &pkt);
2423         if(ret == AVERROR(EAGAIN)){
2424             no_packet[file_index]=1;
2425             no_packet_count++;
2426             continue;
2427         }
2428         if (ret < 0) {
2429             input_files[file_index].eof_reached = 1;
2430             if (opt_shortest)
2431                 break;
2432             else
2433                 continue;
2434         }
2435
2436         no_packet_count=0;
2437         memset(no_packet, 0, sizeof(no_packet));
2438
2439         if (do_pkt_dump) {
2440             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2441                              is->streams[pkt.stream_index]);
2442         }
2443         /* the following test is needed in case new streams appear
2444            dynamically in stream : we ignore them */
2445         if (pkt.stream_index >= input_files[file_index].ctx->nb_streams)
2446             goto discard_packet;
2447         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2448         ist = &input_streams[ist_index];
2449         if (ist->discard)
2450             goto discard_packet;
2451
2452         if (pkt.dts != AV_NOPTS_VALUE)
2453             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2454         if (pkt.pts != AV_NOPTS_VALUE)
2455             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2456
2457         if (ist->ts_scale) {
2458             if(pkt.pts != AV_NOPTS_VALUE)
2459                 pkt.pts *= ist->ts_scale;
2460             if(pkt.dts != AV_NOPTS_VALUE)
2461                 pkt.dts *= ist->ts_scale;
2462         }
2463
2464 //        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);
2465         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2466             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2467             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2468             int64_t delta= pkt_dts - ist->next_pts;
2469             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2470                 input_files[ist->file_index].ts_offset -= delta;
2471                 if (verbose > 2)
2472                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2473                             delta, input_files[ist->file_index].ts_offset);
2474                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2475                 if(pkt.pts != AV_NOPTS_VALUE)
2476                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2477             }
2478         }
2479
2480         /* finish if recording time exhausted */
2481         if (recording_time != INT64_MAX &&
2482             av_compare_ts(pkt.pts, ist->st->time_base, recording_time + start_time, (AVRational){1, 1000000}) >= 0) {
2483             ist->is_past_recording_time = 1;
2484             goto discard_packet;
2485         }
2486
2487         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2488         if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
2489
2490             if (verbose >= 0)
2491                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2492                         ist->file_index, ist->st->index);
2493             if (exit_on_error)
2494                 exit_program(1);
2495             av_free_packet(&pkt);
2496             goto redo;
2497         }
2498
2499     discard_packet:
2500         av_free_packet(&pkt);
2501
2502         /* dump report by using the output first video and audio streams */
2503         print_report(output_files, ost_table, nb_ostreams, 0);
2504     }
2505
2506     /* at the end of stream, we must flush the decoder buffers */
2507     for (i = 0; i < nb_input_streams; i++) {
2508         ist = &input_streams[i];
2509         if (ist->decoding_needed) {
2510             output_packet(ist, i, ost_table, nb_ostreams, NULL);
2511         }
2512     }
2513
2514     term_exit();
2515
2516     /* write the trailer if needed and close file */
2517     for(i=0;i<nb_output_files;i++) {
2518         os = output_files[i];
2519         av_write_trailer(os);
2520     }
2521
2522     /* dump report by using the first video and audio streams */
2523     print_report(output_files, ost_table, nb_ostreams, 1);
2524
2525     /* close each encoder */
2526     for(i=0;i<nb_ostreams;i++) {
2527         ost = ost_table[i];
2528         if (ost->encoding_needed) {
2529             av_freep(&ost->st->codec->stats_in);
2530             avcodec_close(ost->st->codec);
2531         }
2532 #if CONFIG_AVFILTER
2533         avfilter_graph_free(&ost->graph);
2534 #endif
2535     }
2536
2537     /* close each decoder */
2538     for (i = 0; i < nb_input_streams; i++) {
2539         ist = &input_streams[i];
2540         if (ist->decoding_needed) {
2541             avcodec_close(ist->st->codec);
2542         }
2543     }
2544
2545     /* finished ! */
2546     ret = 0;
2547
2548  fail:
2549     av_freep(&bit_buffer);
2550
2551     if (ost_table) {
2552         for(i=0;i<nb_ostreams;i++) {
2553             ost = ost_table[i];
2554             if (ost) {
2555                 if (ost->st->stream_copy)
2556                     av_freep(&ost->st->codec->extradata);
2557                 if (ost->logfile) {
2558                     fclose(ost->logfile);
2559                     ost->logfile = NULL;
2560                 }
2561                 av_fifo_free(ost->fifo); /* works even if fifo is not
2562                                              initialized but set to zero */
2563                 av_freep(&ost->st->codec->subtitle_header);
2564                 av_free(ost->pict_tmp.data[0]);
2565                 av_free(ost->forced_kf_pts);
2566                 if (ost->video_resample)
2567                     sws_freeContext(ost->img_resample_ctx);
2568                 if (ost->resample)
2569                     audio_resample_close(ost->resample);
2570                 if (ost->reformat_ctx)
2571                     av_audio_convert_free(ost->reformat_ctx);
2572                 av_dict_free(&ost->opts);
2573                 av_free(ost);
2574             }
2575         }
2576         av_free(ost_table);
2577     }
2578     return ret;
2579 }
2580
2581 static int opt_format(const char *opt, const char *arg)
2582 {
2583     last_asked_format = arg;
2584     return 0;
2585 }
2586
2587 static int opt_video_rc_override_string(const char *opt, const char *arg)
2588 {
2589     video_rc_override_string = arg;
2590     return 0;
2591 }
2592
2593 static int opt_me_threshold(const char *opt, const char *arg)
2594 {
2595     me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2596     return 0;
2597 }
2598
2599 static int opt_verbose(const char *opt, const char *arg)
2600 {
2601     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2602     return 0;
2603 }
2604
2605 static int opt_frame_rate(const char *opt, const char *arg)
2606 {
2607     if (av_parse_video_rate(&frame_rate, arg) < 0) {
2608         fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2609         exit_program(1);
2610     }
2611     return 0;
2612 }
2613
2614 static int opt_frame_crop(const char *opt, const char *arg)
2615 {
2616     fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
2617     return AVERROR(EINVAL);
2618 }
2619
2620 static int opt_frame_size(const char *opt, const char *arg)
2621 {
2622     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2623         fprintf(stderr, "Incorrect frame size\n");
2624         return AVERROR(EINVAL);
2625     }
2626     return 0;
2627 }
2628
2629 static int opt_pad(const char *opt, const char *arg) {
2630     fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2631     return -1;
2632 }
2633
2634 static int opt_frame_pix_fmt(const char *opt, const char *arg)
2635 {
2636     if (strcmp(arg, "list")) {
2637         frame_pix_fmt = av_get_pix_fmt(arg);
2638         if (frame_pix_fmt == PIX_FMT_NONE) {
2639             fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2640             return AVERROR(EINVAL);
2641         }
2642     } else {
2643         show_pix_fmts();
2644         exit_program(0);
2645     }
2646     return 0;
2647 }
2648
2649 static int opt_frame_aspect_ratio(const char *opt, const char *arg)
2650 {
2651     int x = 0, y = 0;
2652     double ar = 0;
2653     const char *p;
2654     char *end;
2655
2656     p = strchr(arg, ':');
2657     if (p) {
2658         x = strtol(arg, &end, 10);
2659         if (end == p)
2660             y = strtol(end+1, &end, 10);
2661         if (x > 0 && y > 0)
2662             ar = (double)x / (double)y;
2663     } else
2664         ar = strtod(arg, NULL);
2665
2666     if (!ar) {
2667         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2668         return AVERROR(EINVAL);
2669     }
2670     frame_aspect_ratio = ar;
2671     return 0;
2672 }
2673
2674 static int opt_metadata(const char *opt, const char *arg)
2675 {
2676     char *mid= strchr(arg, '=');
2677
2678     if(!mid){
2679         fprintf(stderr, "Missing =\n");
2680         exit_program(1);
2681     }
2682     *mid++= 0;
2683
2684     av_dict_set(&metadata, arg, mid, 0);
2685
2686     return 0;
2687 }
2688
2689 static int opt_qscale(const char *opt, const char *arg)
2690 {
2691     video_qscale = parse_number_or_die(opt, arg, OPT_FLOAT, 0, 255);
2692     if (video_qscale == 0) {
2693         fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2694         return AVERROR(EINVAL);
2695     }
2696     return 0;
2697 }
2698
2699 static int opt_top_field_first(const char *opt, const char *arg)
2700 {
2701     top_field_first = parse_number_or_die(opt, arg, OPT_INT, 0, 1);
2702     return 0;
2703 }
2704
2705 static int opt_thread_count(const char *opt, const char *arg)
2706 {
2707     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2708 #if !HAVE_THREADS
2709     if (verbose >= 0)
2710         fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2711 #endif
2712     return 0;
2713 }
2714
2715 static int opt_audio_sample_fmt(const char *opt, const char *arg)
2716 {
2717     if (strcmp(arg, "list")) {
2718         audio_sample_fmt = av_get_sample_fmt(arg);
2719         if (audio_sample_fmt == AV_SAMPLE_FMT_NONE) {
2720             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg);
2721             return AVERROR(EINVAL);
2722         }
2723     } else {
2724         int i;
2725         char fmt_str[128];
2726         for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
2727             printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
2728         exit_program(0);
2729     }
2730     return 0;
2731 }
2732
2733 static int opt_audio_rate(const char *opt, const char *arg)
2734 {
2735     audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2736     return 0;
2737 }
2738
2739 static int opt_audio_channels(const char *opt, const char *arg)
2740 {
2741     audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2742     return 0;
2743 }
2744
2745 static int opt_codec(int *pstream_copy, char **pcodec_name,
2746                       int codec_type, const char *arg)
2747 {
2748     av_freep(pcodec_name);
2749     if (!strcmp(arg, "copy")) {
2750         *pstream_copy = 1;
2751     } else {
2752         *pcodec_name = av_strdup(arg);
2753     }
2754     return 0;
2755 }
2756
2757 static int opt_audio_codec(const char *opt, const char *arg)
2758 {
2759     return opt_codec(&audio_stream_copy, &audio_codec_name, AVMEDIA_TYPE_AUDIO, arg);
2760 }
2761
2762 static int opt_video_codec(const char *opt, const char *arg)
2763 {
2764     return opt_codec(&video_stream_copy, &video_codec_name, AVMEDIA_TYPE_VIDEO, arg);
2765 }
2766
2767 static int opt_subtitle_codec(const char *opt, const char *arg)
2768 {
2769     return opt_codec(&subtitle_stream_copy, &subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, arg);
2770 }
2771
2772 static int opt_data_codec(const char *opt, const char *arg)
2773 {
2774     return opt_codec(&data_stream_copy, &data_codec_name, AVMEDIA_TYPE_DATA, arg);
2775 }
2776
2777 static int opt_codec_tag(const char *opt, const char *arg)
2778 {
2779     char *tail;
2780     uint32_t *codec_tag;
2781
2782     codec_tag = !strcmp(opt, "atag") ? &audio_codec_tag :
2783                 !strcmp(opt, "vtag") ? &video_codec_tag :
2784                 !strcmp(opt, "stag") ? &subtitle_codec_tag : NULL;
2785     if (!codec_tag)
2786         return -1;
2787
2788     *codec_tag = strtol(arg, &tail, 0);
2789     if (!tail || *tail)
2790         *codec_tag = AV_RL32(arg);
2791
2792     return 0;
2793 }
2794
2795 static int opt_map(const char *opt, const char *arg)
2796 {
2797     StreamMap *m = NULL;
2798     int i, negative = 0, file_idx;
2799     int sync_file_idx = -1, sync_stream_idx;
2800     char *p, *sync;
2801     char *map;
2802
2803     if (*arg == '-') {
2804         negative = 1;
2805         arg++;
2806     }
2807     map = av_strdup(arg);
2808
2809     /* parse sync stream first, just pick first matching stream */
2810     if (sync = strchr(map, ',')) {
2811         *sync = 0;
2812         sync_file_idx = strtol(sync + 1, &sync, 0);
2813         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2814             av_log(NULL, AV_LOG_ERROR, "Invalid sync file index: %d.\n", sync_file_idx);
2815             exit_program(1);
2816         }
2817         if (*sync)
2818             sync++;
2819         for (i = 0; i < input_files[sync_file_idx].ctx->nb_streams; i++)
2820             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2821                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2822                 sync_stream_idx = i;
2823                 break;
2824             }
2825         if (i == input_files[sync_file_idx].ctx->nb_streams) {
2826             av_log(NULL, AV_LOG_ERROR, "Sync stream specification in map %s does not "
2827                                        "match any streams.\n", arg);
2828             exit_program(1);
2829         }
2830     }
2831
2832
2833     file_idx = strtol(map, &p, 0);
2834     if (file_idx >= nb_input_files || file_idx < 0) {
2835         av_log(NULL, AV_LOG_ERROR, "Invalid input file index: %d.\n", file_idx);
2836         exit_program(1);
2837     }
2838     if (negative)
2839         /* disable some already defined maps */
2840         for (i = 0; i < nb_stream_maps; i++) {
2841             m = &stream_maps[i];
2842             if (check_stream_specifier(input_files[m->file_index].ctx,
2843                                        input_files[m->file_index].ctx->streams[m->stream_index],
2844                                        *p == ':' ? p + 1 : p) > 0)
2845                 m->disabled = 1;
2846         }
2847     else
2848         for (i = 0; i < input_files[file_idx].ctx->nb_streams; i++) {
2849             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2850                         *p == ':' ? p + 1 : p) <= 0)
2851                 continue;
2852             stream_maps = grow_array(stream_maps, sizeof(*stream_maps), &nb_stream_maps, nb_stream_maps + 1);
2853             m = &stream_maps[nb_stream_maps - 1];
2854
2855             m->file_index   = file_idx;
2856             m->stream_index = i;
2857
2858             if (sync_file_idx >= 0) {
2859                 m->sync_file_index   = sync_file_idx;
2860                 m->sync_stream_index = sync_stream_idx;
2861             } else {
2862                 m->sync_file_index   = file_idx;
2863                 m->sync_stream_index = i;
2864             }
2865         }
2866
2867     if (!m) {
2868         av_log(NULL, AV_LOG_ERROR, "Stream map '%s' matches no streams.\n", arg);
2869         exit_program(1);
2870     }
2871
2872     av_freep(&map);
2873     return 0;
2874 }
2875
2876 static void parse_meta_type(char *arg, char *type, int *index)
2877 {
2878     if (*arg == ':') {
2879         *type = *(++arg);
2880         switch (*arg) {
2881         case 'g':
2882             break;
2883         case 's':
2884         case 'c':
2885         case 'p':
2886             if (*(++arg) == ':')
2887                 *index = strtol(++arg, NULL, 0);
2888             break;
2889         default:
2890             fprintf(stderr, "Invalid metadata type %c.\n", *arg);
2891             exit_program(1);
2892         }
2893     } else
2894         *type = 'g';
2895 }
2896
2897 static int opt_map_metadata(const char *opt, const char *arg)
2898 {
2899     MetadataMap *m, *m1;
2900     char *p;
2901
2902     meta_data_maps = grow_array(meta_data_maps, sizeof(*meta_data_maps),
2903                                 &nb_meta_data_maps, nb_meta_data_maps + 1);
2904
2905     m = &meta_data_maps[nb_meta_data_maps - 1][1];
2906     m->file = strtol(arg, &p, 0);
2907     parse_meta_type(p, &m->type, &m->index);
2908
2909     m1 = &meta_data_maps[nb_meta_data_maps - 1][0];
2910     if (p = strchr(opt, ':'))
2911         parse_meta_type(p, &m1->type, &m1->index);
2912     else
2913         m1->type = 'g';
2914
2915     if (m->type == 'g' || m1->type == 'g')
2916         metadata_global_autocopy = 0;
2917     if (m->type == 's' || m1->type == 's')
2918         metadata_streams_autocopy = 0;
2919     if (m->type == 'c' || m1->type == 'c')
2920         metadata_chapters_autocopy = 0;
2921
2922     return 0;
2923 }
2924
2925 static int opt_input_ts_scale(const char *opt, const char *arg)
2926 {
2927     unsigned int stream;
2928     double scale;
2929     char *p;
2930
2931     stream = strtol(arg, &p, 0);
2932     if (*p)
2933         p++;
2934     scale= strtod(p, &p);
2935
2936     ts_scale = grow_array(ts_scale, sizeof(*ts_scale), &nb_ts_scale, stream + 1);
2937     ts_scale[stream] = scale;
2938     return 0;
2939 }
2940
2941 static int opt_recording_time(const char *opt, const char *arg)
2942 {
2943     recording_time = parse_time_or_die(opt, arg, 1);
2944     return 0;
2945 }
2946
2947 static int opt_start_time(const char *opt, const char *arg)
2948 {
2949     start_time = parse_time_or_die(opt, arg, 1);
2950     return 0;
2951 }
2952
2953 static int opt_input_ts_offset(const char *opt, const char *arg)
2954 {
2955     input_ts_offset = parse_time_or_die(opt, arg, 1);
2956     return 0;
2957 }
2958
2959 static enum CodecID find_codec_or_die(const char *name, int type, int encoder)
2960 {
2961     const char *codec_string = encoder ? "encoder" : "decoder";
2962     AVCodec *codec;
2963
2964     if(!name)
2965         return CODEC_ID_NONE;
2966     codec = encoder ?
2967         avcodec_find_encoder_by_name(name) :
2968         avcodec_find_decoder_by_name(name);
2969     if(!codec) {
2970         fprintf(stderr, "Unknown %s '%s'\n", codec_string, name);
2971         exit_program(1);
2972     }
2973     if(codec->type != type) {
2974         fprintf(stderr, "Invalid %s type '%s'\n", codec_string, name);
2975         exit_program(1);
2976     }
2977     return codec->id;
2978 }
2979
2980 static int opt_input_file(const char *opt, const char *filename)
2981 {
2982     AVFormatContext *ic;
2983     AVInputFormat *file_iformat = NULL;
2984     int err, i, ret, rfps, rfps_base;
2985     int64_t timestamp;
2986     uint8_t buf[128];
2987     AVDictionary **opts;
2988     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
2989
2990     if (last_asked_format) {
2991         if (!(file_iformat = av_find_input_format(last_asked_format))) {
2992             fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
2993             exit_program(1);
2994         }
2995         last_asked_format = NULL;
2996     }
2997
2998     if (!strcmp(filename, "-"))
2999         filename = "pipe:";
3000
3001     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3002                     !strcmp(filename, "/dev/stdin");
3003
3004     /* get default parameters from command line */
3005     ic = avformat_alloc_context();
3006     if (!ic) {
3007         print_error(filename, AVERROR(ENOMEM));
3008         exit_program(1);
3009     }
3010     if (audio_sample_rate) {
3011         snprintf(buf, sizeof(buf), "%d", audio_sample_rate);
3012         av_dict_set(&format_opts, "sample_rate", buf, 0);
3013     }
3014     if (audio_channels) {
3015         snprintf(buf, sizeof(buf), "%d", audio_channels);
3016         av_dict_set(&format_opts, "channels", buf, 0);
3017     }
3018     if (frame_rate.num) {
3019         snprintf(buf, sizeof(buf), "%d/%d", frame_rate.num, frame_rate.den);
3020         av_dict_set(&format_opts, "framerate", buf, 0);
3021     }
3022     if (frame_width && frame_height) {
3023         snprintf(buf, sizeof(buf), "%dx%d", frame_width, frame_height);
3024         av_dict_set(&format_opts, "video_size", buf, 0);
3025     }
3026     if (frame_pix_fmt != PIX_FMT_NONE)
3027         av_dict_set(&format_opts, "pixel_format", av_get_pix_fmt_name(frame_pix_fmt), 0);
3028
3029     ic->video_codec_id   =
3030         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0);
3031     ic->audio_codec_id   =
3032         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0);
3033     ic->subtitle_codec_id=
3034         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0);
3035     ic->flags |= AVFMT_FLAG_NONBLOCK;
3036
3037     /* open the input file with generic libav function */
3038     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3039     if (err < 0) {
3040         print_error(filename, err);
3041         exit_program(1);
3042     }
3043     assert_avoptions(format_opts);
3044
3045     if(opt_programid) {
3046         int i, j;
3047         int found=0;
3048         for(i=0; i<ic->nb_streams; i++){
3049             ic->streams[i]->discard= AVDISCARD_ALL;
3050         }
3051         for(i=0; i<ic->nb_programs; i++){
3052             AVProgram *p= ic->programs[i];
3053             if(p->id != opt_programid){
3054                 p->discard = AVDISCARD_ALL;
3055             }else{
3056                 found=1;
3057                 for(j=0; j<p->nb_stream_indexes; j++){
3058                     ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
3059                 }
3060             }
3061         }
3062         if(!found){
3063             fprintf(stderr, "Specified program id not found\n");
3064             exit_program(1);
3065         }
3066         opt_programid=0;
3067     }
3068
3069     /* Set AVCodecContext options for avformat_find_stream_info */
3070     opts = setup_find_stream_info_opts(ic, codec_opts);
3071     orig_nb_streams = ic->nb_streams;
3072
3073     /* If not enough info to get the stream parameters, we decode the
3074        first frames to get it. (used in mpeg case for example) */
3075     ret = avformat_find_stream_info(ic, opts);
3076     if (ret < 0 && verbose >= 0) {
3077         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3078         av_close_input_file(ic);
3079         exit_program(1);
3080     }
3081
3082     timestamp = start_time;
3083     /* add the stream start time */
3084     if (ic->start_time != AV_NOPTS_VALUE)
3085         timestamp += ic->start_time;
3086
3087     /* if seeking requested, we execute it */
3088     if (start_time != 0) {
3089         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3090         if (ret < 0) {
3091             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3092                     filename, (double)timestamp / AV_TIME_BASE);
3093         }
3094         /* reset seek info */
3095         start_time = 0;
3096     }
3097
3098     /* update the current parameters so that they match the one of the input stream */
3099     for(i=0;i<ic->nb_streams;i++) {
3100         AVStream *st = ic->streams[i];
3101         AVCodecContext *dec = st->codec;
3102         InputStream *ist;
3103
3104         dec->thread_count = thread_count;
3105
3106         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3107         ist = &input_streams[nb_input_streams - 1];
3108         ist->st = st;
3109         ist->file_index = nb_input_files;
3110         ist->discard = 1;
3111         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
3112
3113         if (i < nb_ts_scale)
3114             ist->ts_scale = ts_scale[i];
3115
3116         switch (dec->codec_type) {
3117         case AVMEDIA_TYPE_AUDIO:
3118             ist->dec = avcodec_find_decoder_by_name(audio_codec_name);
3119             if(audio_disable)
3120                 st->discard= AVDISCARD_ALL;
3121             break;
3122         case AVMEDIA_TYPE_VIDEO:
3123             ist->dec = avcodec_find_decoder_by_name(video_codec_name);
3124             rfps      = ic->streams[i]->r_frame_rate.num;
3125             rfps_base = ic->streams[i]->r_frame_rate.den;
3126             if (dec->lowres) {
3127                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3128                 dec->height >>= dec->lowres;
3129                 dec->width  >>= dec->lowres;
3130             }
3131             if(me_threshold)
3132                 dec->debug |= FF_DEBUG_MV;
3133
3134             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3135
3136                 if (verbose >= 0)
3137                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3138                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3139
3140                     (float)rfps / rfps_base, rfps, rfps_base);
3141             }
3142
3143             if(video_disable)
3144                 st->discard= AVDISCARD_ALL;
3145             else if(video_discard)
3146                 st->discard= video_discard;
3147             break;
3148         case AVMEDIA_TYPE_DATA:
3149             break;
3150         case AVMEDIA_TYPE_SUBTITLE:
3151             ist->dec = avcodec_find_decoder_by_name(subtitle_codec_name);
3152             if(subtitle_disable)
3153                 st->discard = AVDISCARD_ALL;
3154             break;
3155         case AVMEDIA_TYPE_ATTACHMENT:
3156         case AVMEDIA_TYPE_UNKNOWN:
3157             break;
3158         default:
3159             abort();
3160         }
3161     }
3162
3163     /* dump the file content */
3164     if (verbose >= 0)
3165         av_dump_format(ic, nb_input_files, filename, 0);
3166
3167     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3168     input_files[nb_input_files - 1].ctx        = ic;
3169     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3170     input_files[nb_input_files - 1].ts_offset  = input_ts_offset - (copy_ts ? 0 : timestamp);
3171
3172     frame_rate    = (AVRational){0, 0};
3173     frame_pix_fmt = PIX_FMT_NONE;
3174     frame_height = 0;
3175     frame_width  = 0;
3176     audio_sample_rate = 0;
3177     audio_channels    = 0;
3178     audio_sample_fmt  = AV_SAMPLE_FMT_NONE;
3179     av_freep(&ts_scale);
3180     nb_ts_scale = 0;
3181
3182     for (i = 0; i < orig_nb_streams; i++)
3183         av_dict_free(&opts[i]);
3184     av_freep(&opts);
3185     av_freep(&video_codec_name);
3186     av_freep(&audio_codec_name);
3187     av_freep(&subtitle_codec_name);
3188     uninit_opts();
3189     init_opts();
3190     return 0;
3191 }
3192
3193 static OutputStream *new_video_stream(AVFormatContext *oc, int file_idx)
3194 {
3195     AVStream *st;
3196     OutputStream *ost;
3197     AVCodecContext *video_enc;
3198     enum CodecID codec_id = CODEC_ID_NONE;
3199     AVCodec *codec= NULL;
3200
3201     if(!video_stream_copy){
3202         if (video_codec_name) {
3203             codec_id = find_codec_or_die(video_codec_name, AVMEDIA_TYPE_VIDEO, 1);
3204             codec = avcodec_find_encoder_by_name(video_codec_name);
3205         } else {
3206             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_VIDEO);
3207             codec = avcodec_find_encoder(codec_id);
3208         }
3209     }
3210
3211     ost = new_output_stream(oc, file_idx, codec);
3212     st  = ost->st;
3213     if (!video_stream_copy) {
3214         ost->frame_aspect_ratio = frame_aspect_ratio;
3215         frame_aspect_ratio = 0;
3216 #if CONFIG_AVFILTER
3217         ost->avfilter= vfilters;
3218         vfilters = NULL;
3219 #endif
3220     }
3221
3222     ost->bitstream_filters = video_bitstream_filters;
3223     video_bitstream_filters= NULL;
3224
3225     st->codec->thread_count= thread_count;
3226
3227     video_enc = st->codec;
3228
3229     if(video_codec_tag)
3230         video_enc->codec_tag= video_codec_tag;
3231
3232     if(oc->oformat->flags & AVFMT_GLOBALHEADER) {
3233         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3234     }
3235
3236     video_enc->codec_type = AVMEDIA_TYPE_VIDEO;
3237     if (video_stream_copy) {
3238         st->stream_copy = 1;
3239         video_enc->sample_aspect_ratio =
3240         st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3241     } else {
3242         const char *p;
3243         int i;
3244
3245         if (frame_rate.num)
3246             ost->frame_rate = frame_rate;
3247         video_enc->codec_id = codec_id;
3248
3249         video_enc->width = frame_width;
3250         video_enc->height = frame_height;
3251         video_enc->pix_fmt = frame_pix_fmt;
3252         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3253
3254         if (intra_only)
3255             video_enc->gop_size = 0;
3256         if (video_qscale || same_quality) {
3257             video_enc->flags |= CODEC_FLAG_QSCALE;
3258             video_enc->global_quality = FF_QP2LAMBDA * video_qscale;
3259         }
3260
3261         if(intra_matrix)
3262             video_enc->intra_matrix = intra_matrix;
3263         if(inter_matrix)
3264             video_enc->inter_matrix = inter_matrix;
3265
3266         p= video_rc_override_string;
3267         for(i=0; p; i++){
3268             int start, end, q;
3269             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3270             if(e!=3){
3271                 fprintf(stderr, "error parsing rc_override\n");
3272                 exit_program(1);
3273             }
3274             video_enc->rc_override=
3275                 av_realloc(video_enc->rc_override,
3276                            sizeof(RcOverride)*(i+1));
3277             video_enc->rc_override[i].start_frame= start;
3278             video_enc->rc_override[i].end_frame  = end;
3279             if(q>0){
3280                 video_enc->rc_override[i].qscale= q;
3281                 video_enc->rc_override[i].quality_factor= 1.0;
3282             }
3283             else{
3284                 video_enc->rc_override[i].qscale= 0;
3285                 video_enc->rc_override[i].quality_factor= -q/100.0;
3286             }
3287             p= strchr(p, '/');
3288             if(p) p++;
3289         }
3290         video_enc->rc_override_count=i;
3291         if (!video_enc->rc_initial_buffer_occupancy)
3292             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3293         video_enc->me_threshold= me_threshold;
3294         video_enc->intra_dc_precision= intra_dc_precision - 8;
3295
3296         if (do_psnr)
3297             video_enc->flags|= CODEC_FLAG_PSNR;
3298
3299         /* two pass mode */
3300         if (do_pass) {
3301             if (do_pass == 1) {
3302                 video_enc->flags |= CODEC_FLAG_PASS1;
3303             } else {
3304                 video_enc->flags |= CODEC_FLAG_PASS2;
3305             }
3306         }
3307
3308         if (forced_key_frames)
3309             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3310     }
3311     if (video_language) {
3312         av_dict_set(&st->metadata, "language", video_language, 0);
3313         av_freep(&video_language);
3314     }
3315
3316     /* reset some key parameters */
3317     video_disable = 0;
3318     av_freep(&video_codec_name);
3319     av_freep(&forced_key_frames);
3320     video_stream_copy = 0;
3321     frame_pix_fmt = PIX_FMT_NONE;
3322     return ost;
3323 }
3324
3325 static OutputStream *new_audio_stream(AVFormatContext *oc, int file_idx)
3326 {
3327     AVStream *st;
3328     OutputStream *ost;
3329     AVCodec *codec= NULL;
3330     AVCodecContext *audio_enc;
3331     enum CodecID codec_id = CODEC_ID_NONE;
3332
3333     if(!audio_stream_copy){
3334         if (audio_codec_name) {
3335             codec_id = find_codec_or_die(audio_codec_name, AVMEDIA_TYPE_AUDIO, 1);
3336             codec = avcodec_find_encoder_by_name(audio_codec_name);
3337         } else {
3338             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_AUDIO);
3339             codec = avcodec_find_encoder(codec_id);
3340         }
3341     }
3342     ost = new_output_stream(oc, file_idx, codec);
3343     st  = ost->st;
3344
3345     ost->bitstream_filters = audio_bitstream_filters;
3346     audio_bitstream_filters= NULL;
3347
3348     st->codec->thread_count= thread_count;
3349
3350     audio_enc = st->codec;
3351     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3352
3353     if(audio_codec_tag)
3354         audio_enc->codec_tag= audio_codec_tag;
3355
3356     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3357         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3358     }
3359     if (audio_stream_copy) {
3360         st->stream_copy = 1;
3361     } else {
3362         audio_enc->codec_id = codec_id;
3363
3364         if (audio_qscale > QSCALE_NONE) {
3365             audio_enc->flags |= CODEC_FLAG_QSCALE;
3366             audio_enc->global_quality = FF_QP2LAMBDA * audio_qscale;
3367         }
3368         if (audio_channels)
3369             audio_enc->channels = audio_channels;
3370         if (audio_sample_fmt != AV_SAMPLE_FMT_NONE)
3371             audio_enc->sample_fmt = audio_sample_fmt;
3372         if (audio_sample_rate)
3373             audio_enc->sample_rate = audio_sample_rate;
3374     }
3375     if (audio_language) {
3376         av_dict_set(&st->metadata, "language", audio_language, 0);
3377         av_freep(&audio_language);
3378     }
3379
3380     /* reset some key parameters */
3381     audio_disable = 0;
3382     av_freep(&audio_codec_name);
3383     audio_stream_copy = 0;
3384
3385     return ost;
3386 }
3387
3388 static OutputStream *new_data_stream(AVFormatContext *oc, int file_idx)
3389 {
3390     AVStream *st;
3391     OutputStream *ost;
3392     AVCodecContext *data_enc;
3393
3394     ost = new_output_stream(oc, file_idx, NULL);
3395     st  = ost->st;
3396     data_enc = st->codec;
3397     if (!data_stream_copy) {
3398         fprintf(stderr, "Data stream encoding not supported yet (only streamcopy)\n");
3399         exit_program(1);
3400     }
3401
3402     data_enc->codec_type = AVMEDIA_TYPE_DATA;
3403
3404     if (data_codec_tag)
3405         data_enc->codec_tag= data_codec_tag;
3406
3407     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3408         data_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3409     }
3410     if (data_stream_copy) {
3411         st->stream_copy = 1;
3412     }
3413
3414     data_disable = 0;
3415     av_freep(&data_codec_name);
3416     data_stream_copy = 0;
3417     return ost;
3418 }
3419
3420 static OutputStream *new_subtitle_stream(AVFormatContext *oc, int file_idx)
3421 {
3422     AVStream *st;
3423     OutputStream *ost;
3424     AVCodec *codec=NULL;
3425     AVCodecContext *subtitle_enc;
3426     enum CodecID codec_id = CODEC_ID_NONE;
3427
3428     if(!subtitle_stream_copy){
3429         if (subtitle_codec_name) {
3430             codec_id = find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 1);
3431             codec = avcodec_find_encoder_by_name(subtitle_codec_name);
3432         } else {
3433             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_SUBTITLE);
3434             codec = avcodec_find_encoder(codec_id);
3435         }
3436     }
3437     ost = new_output_stream(oc, file_idx, codec);
3438     st  = ost->st;
3439     subtitle_enc = st->codec;
3440
3441     ost->bitstream_filters = subtitle_bitstream_filters;
3442     subtitle_bitstream_filters= NULL;
3443
3444     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3445
3446     if(subtitle_codec_tag)
3447         subtitle_enc->codec_tag= subtitle_codec_tag;
3448
3449     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3450         subtitle_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3451     }
3452     if (subtitle_stream_copy) {
3453         st->stream_copy = 1;
3454     } else {
3455         subtitle_enc->codec_id = codec_id;
3456     }
3457
3458     if (subtitle_language) {
3459         av_dict_set(&st->metadata, "language", subtitle_language, 0);
3460         av_freep(&subtitle_language);
3461     }
3462
3463     subtitle_disable = 0;
3464     av_freep(&subtitle_codec_name);
3465     subtitle_stream_copy = 0;
3466     return ost;
3467 }
3468
3469 /* arg format is "output-stream-index:streamid-value". */
3470 static int opt_streamid(const char *opt, const char *arg)
3471 {
3472     int idx;
3473     char *p;
3474     char idx_str[16];
3475
3476     av_strlcpy(idx_str, arg, sizeof(idx_str));
3477     p = strchr(idx_str, ':');
3478     if (!p) {
3479         fprintf(stderr,
3480                 "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3481                 arg, opt);
3482         exit_program(1);
3483     }
3484     *p++ = '\0';
3485     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, INT_MAX);
3486     streamid_map = grow_array(streamid_map, sizeof(*streamid_map), &nb_streamid_map, idx+1);
3487     streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3488     return 0;
3489 }
3490
3491 static void opt_output_file(const char *filename)
3492 {
3493     AVFormatContext *oc;
3494     int i, err;
3495     AVOutputFormat *file_oformat;
3496     OutputStream *ost;
3497     InputStream  *ist;
3498
3499     if (!strcmp(filename, "-"))
3500         filename = "pipe:";
3501
3502     oc = avformat_alloc_context();
3503     if (!oc) {
3504         print_error(filename, AVERROR(ENOMEM));
3505         exit_program(1);
3506     }
3507
3508     if (last_asked_format) {
3509         file_oformat = av_guess_format(last_asked_format, NULL, NULL);
3510         if (!file_oformat) {
3511             fprintf(stderr, "Requested output format '%s' is not a suitable output format\n", last_asked_format);
3512             exit_program(1);
3513         }
3514         last_asked_format = NULL;
3515     } else {
3516         file_oformat = av_guess_format(NULL, filename, NULL);
3517         if (!file_oformat) {
3518             fprintf(stderr, "Unable to find a suitable output format for '%s'\n",
3519                     filename);
3520             exit_program(1);
3521         }
3522     }
3523
3524     oc->oformat = file_oformat;
3525     av_strlcpy(oc->filename, filename, sizeof(oc->filename));
3526
3527     if (!strcmp(file_oformat->name, "ffm") &&
3528         av_strstart(filename, "http:", NULL)) {
3529         /* special case for files sent to avserver: we get the stream
3530            parameters from avserver */
3531         int err = read_avserver_streams(oc, filename);
3532         if (err < 0) {
3533             print_error(filename, err);
3534             exit_program(1);
3535         }
3536     } else if (!nb_stream_maps) {
3537         /* pick the "best" stream of each type */
3538 #define NEW_STREAM(type, index)\
3539         if (index >= 0) {\
3540             ost = new_ ## type ## _stream(oc, nb_output_files);\
3541             ost->source_index = index;\
3542             ost->sync_ist     = &input_streams[index];\
3543             input_streams[index].discard = 0;\
3544         }
3545
3546         /* video: highest resolution */
3547         if (!video_disable && oc->oformat->video_codec != CODEC_ID_NONE) {
3548             int area = 0, idx = -1;
3549             for (i = 0; i < nb_input_streams; i++) {
3550                 ist = &input_streams[i];
3551                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3552                     ist->st->codec->width * ist->st->codec->height > area) {
3553                     area = ist->st->codec->width * ist->st->codec->height;
3554                     idx = i;
3555                 }
3556             }
3557             NEW_STREAM(video, idx);
3558         }
3559
3560         /* audio: most channels */
3561         if (!audio_disable && oc->oformat->audio_codec != CODEC_ID_NONE) {
3562             int channels = 0, idx = -1;
3563             for (i = 0; i < nb_input_streams; i++) {
3564                 ist = &input_streams[i];
3565                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
3566                     ist->st->codec->channels > channels) {
3567                     channels = ist->st->codec->channels;
3568                     idx = i;
3569                 }
3570             }
3571             NEW_STREAM(audio, idx);
3572         }
3573
3574         /* subtitles: pick first */
3575         if (!subtitle_disable && oc->oformat->subtitle_codec != CODEC_ID_NONE) {
3576             for (i = 0; i < nb_input_streams; i++)
3577                 if (input_streams[i].st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3578                     NEW_STREAM(subtitle, i);
3579                     break;
3580                 }
3581         }
3582         /* do something with data? */
3583     } else {
3584         for (i = 0; i < nb_stream_maps; i++) {
3585             StreamMap *map = &stream_maps[i];
3586
3587             if (map->disabled)
3588                 continue;
3589
3590             ist = &input_streams[input_files[map->file_index].ist_index + map->stream_index];
3591             switch (ist->st->codec->codec_type) {
3592             case AVMEDIA_TYPE_VIDEO:    ost = new_video_stream(oc, nb_output_files);    break;
3593             case AVMEDIA_TYPE_AUDIO:    ost = new_audio_stream(oc, nb_output_files);    break;
3594             case AVMEDIA_TYPE_SUBTITLE: ost = new_subtitle_stream(oc, nb_output_files); break;
3595             case AVMEDIA_TYPE_DATA:     ost = new_data_stream(oc, nb_output_files);     break;
3596             default:
3597                 av_log(NULL, AV_LOG_ERROR, "Cannot map stream #%d.%d - unsupported type.\n",
3598                        map->file_index, map->stream_index);
3599                 exit_program(1);
3600             }
3601
3602             ost->source_index = input_files[map->file_index].ist_index + map->stream_index;
3603             ost->sync_ist = &input_streams[input_files[map->sync_file_index].ist_index +
3604                                            map->sync_stream_index];
3605             ist->discard = 0;
3606         }
3607     }
3608
3609     av_dict_copy(&oc->metadata, metadata, 0);
3610     av_dict_free(&metadata);
3611
3612     av_dict_copy(&output_opts[nb_output_files], format_opts, 0);
3613     output_files[nb_output_files++] = oc;
3614
3615     /* check filename in case of an image number is expected */
3616     if (oc->oformat->flags & AVFMT_NEEDNUMBER) {
3617         if (!av_filename_number_test(oc->filename)) {
3618             print_error(oc->filename, AVERROR(EINVAL));
3619             exit_program(1);
3620         }
3621     }
3622
3623     if (!(oc->oformat->flags & AVFMT_NOFILE)) {
3624         /* test if it already exists to avoid loosing precious files */
3625         if (!file_overwrite &&
3626             (strchr(filename, ':') == NULL ||
3627              filename[1] == ':' ||
3628              av_strstart(filename, "file:", NULL))) {
3629             if (avio_check(filename, 0) == 0) {
3630                 if (!using_stdin) {
3631                     fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3632                     fflush(stderr);
3633                     if (!read_yesno()) {
3634                         fprintf(stderr, "Not overwriting - exiting\n");
3635                         exit_program(1);
3636                     }
3637                 }
3638                 else {
3639                     fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
3640                     exit_program(1);
3641                 }
3642             }
3643         }
3644
3645         /* open the file */
3646         if ((err = avio_open(&oc->pb, filename, AVIO_FLAG_WRITE)) < 0) {
3647             print_error(filename, err);
3648             exit_program(1);
3649         }
3650     }
3651
3652     oc->preload= (int)(mux_preload*AV_TIME_BASE);
3653     oc->max_delay= (int)(mux_max_delay*AV_TIME_BASE);
3654     oc->flags |= AVFMT_FLAG_NONBLOCK;
3655
3656     /* copy chapters */
3657     if (chapters_input_file >= nb_input_files) {
3658         if (chapters_input_file == INT_MAX) {
3659             /* copy chapters from the first input file that has them*/
3660          &nbs