avconv: make -map_chapters accept only the input file index.
[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 file_index;
83     int stream_index;
84     int sync_file_index;
85     int sync_stream_index;
86 } StreamMap;
87
88 /**
89  * select an input file for an output file
90  */
91 typedef struct MetadataMap {
92     int  file;      //< file index
93     char type;      //< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
94     int  index;     //< stream/chapter/program number
95 } MetadataMap;
96
97 static const OptionDef options[];
98
99 #define MAX_FILES 100
100
101 static const char *last_asked_format = NULL;
102 static double *ts_scale;
103 static int  nb_ts_scale;
104
105 static AVFormatContext *output_files[MAX_FILES];
106 static AVDictionary *output_opts[MAX_FILES];
107 static int nb_output_files = 0;
108
109 static StreamMap *stream_maps = NULL;
110 static int nb_stream_maps;
111
112 /* first item specifies output metadata, second is input */
113 static MetadataMap (*meta_data_maps)[2] = NULL;
114 static int nb_meta_data_maps;
115 static int metadata_global_autocopy   = 1;
116 static int metadata_streams_autocopy  = 1;
117 static int metadata_chapters_autocopy = 1;
118
119 static int chapters_input_file = INT_MAX;
120
121 /* indexed by output file stream index */
122 static int *streamid_map = NULL;
123 static int nb_streamid_map = 0;
124
125 static int frame_width  = 0;
126 static int frame_height = 0;
127 static float frame_aspect_ratio = 0;
128 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
129 static enum AVSampleFormat audio_sample_fmt = AV_SAMPLE_FMT_NONE;
130 static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
131 static AVRational frame_rate;
132 static float video_qscale = 0;
133 static uint16_t *intra_matrix = NULL;
134 static uint16_t *inter_matrix = NULL;
135 static const char *video_rc_override_string=NULL;
136 static int video_disable = 0;
137 static int video_discard = 0;
138 static char *video_codec_name = NULL;
139 static unsigned int video_codec_tag = 0;
140 static char *video_language = NULL;
141 static int same_quality = 0;
142 static int do_deinterlace = 0;
143 static int top_field_first = -1;
144 static int me_threshold = 0;
145 static int intra_dc_precision = 8;
146 static int loop_input = 0;
147 static int loop_output = AVFMT_NOOUTPUTLOOP;
148 static int qp_hist = 0;
149 #if CONFIG_AVFILTER
150 static char *vfilters = NULL;
151 #endif
152
153 static int intra_only = 0;
154 static int audio_sample_rate = 0;
155 #define QSCALE_NONE -99999
156 static float audio_qscale = QSCALE_NONE;
157 static int audio_disable = 0;
158 static int audio_channels = 0;
159 static char  *audio_codec_name = NULL;
160 static unsigned int audio_codec_tag = 0;
161 static char *audio_language = NULL;
162
163 static int subtitle_disable = 0;
164 static char *subtitle_codec_name = NULL;
165 static char *subtitle_language = NULL;
166 static unsigned int subtitle_codec_tag = 0;
167
168 static int data_disable = 0;
169 static char *data_codec_name = NULL;
170 static unsigned int data_codec_tag = 0;
171
172 static float mux_preload= 0.5;
173 static float mux_max_delay= 0.7;
174
175 static int64_t recording_time = INT64_MAX;
176 static int64_t start_time = 0;
177 static int64_t input_ts_offset = 0;
178 static int file_overwrite = 0;
179 static AVDictionary *metadata;
180 static int do_benchmark = 0;
181 static int do_hex_dump = 0;
182 static int do_pkt_dump = 0;
183 static int do_psnr = 0;
184 static int do_pass = 0;
185 static char *pass_logfilename_prefix = NULL;
186 static int audio_stream_copy = 0;
187 static int video_stream_copy = 0;
188 static int subtitle_stream_copy = 0;
189 static int data_stream_copy = 0;
190 static int video_sync_method= -1;
191 static int audio_sync_method= 0;
192 static float audio_drift_threshold= 0.1;
193 static int copy_ts= 0;
194 static int copy_tb;
195 static int opt_shortest = 0;
196 static char *vstats_filename;
197 static FILE *vstats_file;
198 static int opt_programid = 0;
199 static int copy_initial_nonkeyframes = 0;
200
201 static int rate_emu = 0;
202
203 static int audio_volume = 256;
204
205 static int exit_on_error = 0;
206 static int using_stdin = 0;
207 static int verbose = 1;
208 static int thread_count= 1;
209 static int64_t video_size = 0;
210 static int64_t audio_size = 0;
211 static int64_t extra_size = 0;
212 static int nb_frames_dup = 0;
213 static int nb_frames_drop = 0;
214 static int input_sync;
215 static uint64_t limit_filesize = 0;
216 static int force_fps = 0;
217 static char *forced_key_frames = NULL;
218
219 static float dts_delta_threshold = 10;
220
221 static int64_t timer_start;
222
223 static uint8_t *audio_buf;
224 static uint8_t *audio_out;
225 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
226
227 static short *samples;
228
229 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
230 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
231 static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL;
232
233 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
234
235 struct InputStream;
236
237 typedef struct OutputStream {
238     int file_index;          /* file index */
239     int index;               /* stream index in the output file */
240     int source_index;        /* InputStream index */
241     AVStream *st;            /* stream in the output file */
242     int encoding_needed;     /* true if encoding needed for this stream */
243     int frame_number;
244     /* input pts and corresponding output pts
245        for A/V sync */
246     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
247     struct InputStream *sync_ist; /* input stream to sync against */
248     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
249     AVBitStreamFilterContext *bitstream_filters;
250     AVCodec *enc;
251
252     /* video only */
253     int video_resample;
254     AVFrame pict_tmp;      /* temporary image for resampling */
255     struct SwsContext *img_resample_ctx; /* for image resampling */
256     int resample_height;
257     int resample_width;
258     int resample_pix_fmt;
259     AVRational frame_rate;
260
261     float frame_aspect_ratio;
262
263     /* forced key frames */
264     int64_t *forced_kf_pts;
265     int forced_kf_count;
266     int forced_kf_index;
267
268     /* audio only */
269     int audio_resample;
270     ReSampleContext *resample; /* for audio resampling */
271     int resample_sample_fmt;
272     int resample_channels;
273     int resample_sample_rate;
274     int reformat_pair;
275     AVAudioConvert *reformat_ctx;
276     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
277     FILE *logfile;
278
279 #if CONFIG_AVFILTER
280     AVFilterContext *output_video_filter;
281     AVFilterContext *input_video_filter;
282     AVFilterBufferRef *picref;
283     char *avfilter;
284     AVFilterGraph *graph;
285 #endif
286
287    int sws_flags;
288    AVDictionary *opts;
289 } OutputStream;
290
291 static OutputStream **output_streams_for_file[MAX_FILES] = { NULL };
292 static int nb_output_streams_for_file[MAX_FILES] = { 0 };
293
294 typedef struct InputStream {
295     int file_index;
296     AVStream *st;
297     int discard;             /* true if stream data should be discarded */
298     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
299     AVCodec *dec;
300
301     int64_t       start;     /* time when read started */
302     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
303                                 is not defined */
304     int64_t       pts;       /* current pts */
305     PtsCorrectionContext pts_ctx;
306     double ts_scale;
307     int is_start;            /* is 1 at the start and after a discontinuity */
308     int showed_multi_packet_warning;
309     int is_past_recording_time;
310     AVDictionary *opts;
311 } InputStream;
312
313 typedef struct InputFile {
314     AVFormatContext *ctx;
315     int eof_reached;      /* true if eof reached */
316     int ist_index;        /* index of first stream in ist_table */
317     int buffer_size;      /* current total buffer size */
318     int64_t ts_offset;
319 } InputFile;
320
321 static InputStream *input_streams = NULL;
322 static int         nb_input_streams = 0;
323 static InputFile   *input_files   = NULL;
324 static int         nb_input_files   = 0;
325
326 #if CONFIG_AVFILTER
327
328 static int configure_video_filters(InputStream *ist, OutputStream *ost)
329 {
330     AVFilterContext *last_filter, *filter;
331     /** filter graph containing all filters including input & output */
332     AVCodecContext *codec = ost->st->codec;
333     AVCodecContext *icodec = ist->st->codec;
334     FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
335     AVRational sample_aspect_ratio;
336     char args[255];
337     int ret;
338
339     ost->graph = avfilter_graph_alloc();
340
341     if (ist->st->sample_aspect_ratio.num){
342         sample_aspect_ratio = ist->st->sample_aspect_ratio;
343     }else
344         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
345
346     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
347              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
348              sample_aspect_ratio.num, sample_aspect_ratio.den);
349
350     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
351                                        "src", args, NULL, ost->graph);
352     if (ret < 0)
353         return ret;
354     ret = avfilter_graph_create_filter(&ost->output_video_filter, &ffsink,
355                                        "out", NULL, &ffsink_ctx, ost->graph);
356     if (ret < 0)
357         return ret;
358     last_filter = ost->input_video_filter;
359
360     if (codec->width  != icodec->width || codec->height != icodec->height) {
361         snprintf(args, 255, "%d:%d:flags=0x%X",
362                  codec->width,
363                  codec->height,
364                  ost->sws_flags);
365         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
366                                                 NULL, args, NULL, ost->graph)) < 0)
367             return ret;
368         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
369             return ret;
370         last_filter = filter;
371     }
372
373     snprintf(args, sizeof(args), "flags=0x%X", ost->sws_flags);
374     ost->graph->scale_sws_opts = av_strdup(args);
375
376     if (ost->avfilter) {
377         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
378         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
379
380         outputs->name    = av_strdup("in");
381         outputs->filter_ctx = last_filter;
382         outputs->pad_idx = 0;
383         outputs->next    = NULL;
384
385         inputs->name    = av_strdup("out");
386         inputs->filter_ctx = ost->output_video_filter;
387         inputs->pad_idx = 0;
388         inputs->next    = NULL;
389
390         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, inputs, outputs, NULL)) < 0)
391             return ret;
392         av_freep(&ost->avfilter);
393     } else {
394         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
395             return ret;
396     }
397
398     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
399         return ret;
400
401     codec->width  = ost->output_video_filter->inputs[0]->w;
402     codec->height = ost->output_video_filter->inputs[0]->h;
403     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
404         ost->frame_aspect_ratio ? // overriden by the -aspect cli option
405         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
406         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
407
408     return 0;
409 }
410 #endif /* CONFIG_AVFILTER */
411
412 static void term_exit(void)
413 {
414     av_log(NULL, AV_LOG_QUIET, "");
415 }
416
417 static volatile int received_sigterm = 0;
418 static volatile int received_nb_signals = 0;
419
420 static void
421 sigterm_handler(int sig)
422 {
423     received_sigterm = sig;
424     received_nb_signals++;
425     term_exit();
426 }
427
428 static void term_init(void)
429 {
430     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
431     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
432 #ifdef SIGXCPU
433     signal(SIGXCPU, sigterm_handler);
434 #endif
435 }
436
437 static int decode_interrupt_cb(void)
438 {
439     return received_nb_signals > 1;
440 }
441
442 static int exit_program(int ret)
443 {
444     int i;
445
446     /* close files */
447     for(i=0;i<nb_output_files;i++) {
448         AVFormatContext *s = output_files[i];
449         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
450             avio_close(s->pb);
451         avformat_free_context(s);
452         av_free(output_streams_for_file[i]);
453         av_dict_free(&output_opts[i]);
454     }
455     for(i=0;i<nb_input_files;i++) {
456         av_close_input_file(input_files[i].ctx);
457     }
458     for (i = 0; i < nb_input_streams; i++)
459         av_dict_free(&input_streams[i].opts);
460
461     av_free(intra_matrix);
462     av_free(inter_matrix);
463
464     if (vstats_file)
465         fclose(vstats_file);
466     av_free(vstats_filename);
467
468     av_free(streamid_map);
469     av_free(stream_maps);
470     av_free(meta_data_maps);
471
472     av_freep(&input_streams);
473     av_freep(&input_files);
474
475     av_free(video_codec_name);
476     av_free(audio_codec_name);
477     av_free(subtitle_codec_name);
478     av_free(data_codec_name);
479
480     uninit_opts();
481     av_free(audio_buf);
482     av_free(audio_out);
483     allocated_audio_buf_size= allocated_audio_out_size= 0;
484     av_free(samples);
485
486 #if CONFIG_AVFILTER
487     avfilter_uninit();
488 #endif
489
490     if (received_sigterm) {
491         fprintf(stderr,
492             "Received signal %d: terminating.\n",
493             (int) received_sigterm);
494         exit (255);
495     }
496
497     exit(ret); /* not all OS-es handle main() return value */
498     return ret;
499 }
500
501 static void assert_avoptions(AVDictionary *m)
502 {
503     AVDictionaryEntry *t;
504     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
505         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
506         exit_program(1);
507     }
508 }
509
510 static void assert_codec_experimental(AVCodecContext *c, int encoder)
511 {
512     const char *codec_string = encoder ? "encoder" : "decoder";
513     AVCodec *codec;
514     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
515         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
516         av_log(NULL, AV_LOG_ERROR, "%s '%s' is experimental and might produce bad "
517                 "results.\nAdd '-strict experimental' if you want to use it.\n",
518                 codec_string, c->codec->name);
519         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
520         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
521             av_log(NULL, AV_LOG_ERROR, "Or use the non experimental %s '%s'.\n",
522                    codec_string, codec->name);
523         exit_program(1);
524     }
525 }
526
527 /* similar to ff_dynarray_add() and av_fast_realloc() */
528 static void *grow_array(void *array, int elem_size, int *size, int new_size)
529 {
530     if (new_size >= INT_MAX / elem_size) {
531         fprintf(stderr, "Array too big.\n");
532         exit_program(1);
533     }
534     if (*size < new_size) {
535         uint8_t *tmp = av_realloc(array, new_size*elem_size);
536         if (!tmp) {
537             fprintf(stderr, "Could not alloc buffer.\n");
538             exit_program(1);
539         }
540         memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
541         *size = new_size;
542         return tmp;
543     }
544     return array;
545 }
546
547 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
548 {
549     if(codec && codec->sample_fmts){
550         const enum AVSampleFormat *p= codec->sample_fmts;
551         for(; *p!=-1; p++){
552             if(*p == st->codec->sample_fmt)
553                 break;
554         }
555         if (*p == -1) {
556             av_log(NULL, AV_LOG_WARNING,
557                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
558                    av_get_sample_fmt_name(st->codec->sample_fmt),
559                    codec->name,
560                    av_get_sample_fmt_name(codec->sample_fmts[0]));
561             st->codec->sample_fmt = codec->sample_fmts[0];
562         }
563     }
564 }
565
566 /**
567  * Update the requested input sample format based on the output sample format.
568  * This is currently only used to request float output from decoders which
569  * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
570  * Ideally this will be removed in the future when decoders do not do format
571  * conversion and only output in their native format.
572  */
573 static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
574                               AVCodecContext *enc)
575 {
576     /* if sample formats match or a decoder sample format has already been
577        requested, just return */
578     if (enc->sample_fmt == dec->sample_fmt ||
579         dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
580         return;
581
582     /* if decoder supports more than one output format */
583     if (dec_codec && dec_codec->sample_fmts &&
584         dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
585         dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
586         const enum AVSampleFormat *p;
587         int min_dec = -1, min_inc = -1;
588
589         /* find a matching sample format in the encoder */
590         for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
591             if (*p == enc->sample_fmt) {
592                 dec->request_sample_fmt = *p;
593                 return;
594             } else if (*p > enc->sample_fmt) {
595                 min_inc = FFMIN(min_inc, *p - enc->sample_fmt);
596             } else
597                 min_dec = FFMIN(min_dec, enc->sample_fmt - *p);
598         }
599
600         /* if none match, provide the one that matches quality closest */
601         dec->request_sample_fmt = min_inc > 0 ? enc->sample_fmt + min_inc :
602                                   enc->sample_fmt - min_dec;
603     }
604 }
605
606 static void choose_sample_rate(AVStream *st, AVCodec *codec)
607 {
608     if(codec && codec->supported_samplerates){
609         const int *p= codec->supported_samplerates;
610         int best=0;
611         int best_dist=INT_MAX;
612         for(; *p; p++){
613             int dist= abs(st->codec->sample_rate - *p);
614             if(dist < best_dist){
615                 best_dist= dist;
616                 best= *p;
617             }
618         }
619         if(best_dist){
620             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
621         }
622         st->codec->sample_rate= best;
623     }
624 }
625
626 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
627 {
628     if(codec && codec->pix_fmts){
629         const enum PixelFormat *p= codec->pix_fmts;
630         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
631             if(st->codec->codec_id==CODEC_ID_MJPEG){
632                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
633             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
634                 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};
635             }
636         }
637         for(; *p!=-1; p++){
638             if(*p == st->codec->pix_fmt)
639                 break;
640         }
641         if (*p == -1) {
642             if(st->codec->pix_fmt != PIX_FMT_NONE)
643                 av_log(NULL, AV_LOG_WARNING,
644                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
645                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
646                         codec->name,
647                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
648             st->codec->pix_fmt = codec->pix_fmts[0];
649         }
650     }
651 }
652
653 static OutputStream *new_output_stream(AVFormatContext *oc, int file_idx, AVCodec *codec)
654 {
655     OutputStream *ost;
656     AVStream *st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
657     int idx      = oc->nb_streams - 1;
658
659     if (!st) {
660         av_log(NULL, AV_LOG_ERROR, "Could not alloc stream.\n");
661         exit_program(1);
662     }
663
664     output_streams_for_file[file_idx] =
665         grow_array(output_streams_for_file[file_idx],
666                    sizeof(*output_streams_for_file[file_idx]),
667                    &nb_output_streams_for_file[file_idx],
668                    oc->nb_streams);
669     ost = output_streams_for_file[file_idx][idx] =
670         av_mallocz(sizeof(OutputStream));
671     if (!ost) {
672         fprintf(stderr, "Could not alloc output stream\n");
673         exit_program(1);
674     }
675     ost->file_index = file_idx;
676     ost->index = idx;
677     ost->st    = st;
678     ost->enc   = codec;
679     if (codec)
680         ost->opts  = filter_codec_opts(codec_opts, codec->id, 1);
681
682     avcodec_get_context_defaults3(st->codec, codec);
683
684     ost->sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
685     return ost;
686 }
687
688 static int read_avserver_streams(AVFormatContext *s, const char *filename)
689 {
690     int i, err;
691     AVFormatContext *ic = NULL;
692     int nopts = 0;
693
694     err = avformat_open_input(&ic, filename, NULL, NULL);
695     if (err < 0)
696         return err;
697     /* copy stream format */
698     for(i=0;i<ic->nb_streams;i++) {
699         AVStream *st;
700         OutputStream *ost;
701         AVCodec *codec;
702
703         codec = avcodec_find_encoder(ic->streams[i]->codec->codec_id);
704         ost   = new_output_stream(s, nb_output_files, codec);
705         st    = ost->st;
706
707         // FIXME: a more elegant solution is needed
708         memcpy(st, ic->streams[i], sizeof(AVStream));
709         st->info = NULL;
710         avcodec_copy_context(st->codec, ic->streams[i]->codec);
711
712         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
713             if (audio_stream_copy) {
714                 st->stream_copy = 1;
715             } else
716                 choose_sample_fmt(st, codec);
717         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
718             if (video_stream_copy) {
719                 st->stream_copy = 1;
720             } else
721                 choose_pixel_fmt(st, codec);
722         }
723
724         if(st->codec->flags & CODEC_FLAG_BITEXACT)
725             nopts = 1;
726     }
727
728     av_close_input_file(ic);
729     return 0;
730 }
731
732 static double
733 get_sync_ipts(const OutputStream *ost)
734 {
735     const InputStream *ist = ost->sync_ist;
736     return (double)(ist->pts - start_time)/AV_TIME_BASE;
737 }
738
739 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
740     int ret;
741
742     while(bsfc){
743         AVPacket new_pkt= *pkt;
744         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
745                                           &new_pkt.data, &new_pkt.size,
746                                           pkt->data, pkt->size,
747                                           pkt->flags & AV_PKT_FLAG_KEY);
748         if(a>0){
749             av_free_packet(pkt);
750             new_pkt.destruct= av_destruct_packet;
751         } else if(a<0){
752             fprintf(stderr, "%s failed for stream %d, codec %s",
753                     bsfc->filter->name, pkt->stream_index,
754                     avctx->codec ? avctx->codec->name : "copy");
755             print_error("", a);
756             if (exit_on_error)
757                 exit_program(1);
758         }
759         *pkt= new_pkt;
760
761         bsfc= bsfc->next;
762     }
763
764     ret= av_interleaved_write_frame(s, pkt);
765     if(ret < 0){
766         print_error("av_interleaved_write_frame()", ret);
767         exit_program(1);
768     }
769 }
770
771 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
772
773 static void do_audio_out(AVFormatContext *s,
774                          OutputStream *ost,
775                          InputStream *ist,
776                          unsigned char *buf, int size)
777 {
778     uint8_t *buftmp;
779     int64_t audio_out_size, audio_buf_size;
780     int64_t allocated_for_size= size;
781
782     int size_out, frame_bytes, ret, resample_changed;
783     AVCodecContext *enc= ost->st->codec;
784     AVCodecContext *dec= ist->st->codec;
785     int osize = av_get_bytes_per_sample(enc->sample_fmt);
786     int isize = av_get_bytes_per_sample(dec->sample_fmt);
787     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
788
789 need_realloc:
790     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
791     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
792     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
793     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
794     audio_buf_size*= osize*enc->channels;
795
796     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
797     if(coded_bps > 8*osize)
798         audio_out_size= audio_out_size * coded_bps / (8*osize);
799     audio_out_size += FF_MIN_BUFFER_SIZE;
800
801     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
802         fprintf(stderr, "Buffer sizes too large\n");
803         exit_program(1);
804     }
805
806     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
807     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
808     if (!audio_buf || !audio_out){
809         fprintf(stderr, "Out of memory in do_audio_out\n");
810         exit_program(1);
811     }
812
813     if (enc->channels != dec->channels || enc->sample_rate != dec->sample_rate)
814         ost->audio_resample = 1;
815
816     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
817                        ost->resample_channels    != dec->channels   ||
818                        ost->resample_sample_rate != dec->sample_rate;
819
820     if ((ost->audio_resample && !ost->resample) || resample_changed) {
821         if (resample_changed) {
822             av_log(NULL, AV_LOG_INFO, "Input stream #%d.%d frame changed from rate:%d fmt:%s ch:%d to rate:%d fmt:%s ch:%d\n",
823                    ist->file_index, ist->st->index,
824                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
825                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
826             ost->resample_sample_fmt  = dec->sample_fmt;
827             ost->resample_channels    = dec->channels;
828             ost->resample_sample_rate = dec->sample_rate;
829             if (ost->resample)
830                 audio_resample_close(ost->resample);
831         }
832         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
833         if (audio_sync_method <= 1 &&
834             ost->resample_sample_fmt  == enc->sample_fmt &&
835             ost->resample_channels    == enc->channels   &&
836             ost->resample_sample_rate == enc->sample_rate) {
837             ost->resample = NULL;
838             ost->audio_resample = 0;
839         } else if (ost->audio_resample) {
840             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
841                 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
842             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
843                                                    enc->sample_rate, dec->sample_rate,
844                                                    enc->sample_fmt,  dec->sample_fmt,
845                                                    16, 10, 0, 0.8);
846             if (!ost->resample) {
847                 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
848                         dec->channels, dec->sample_rate,
849                         enc->channels, enc->sample_rate);
850                 exit_program(1);
851             }
852         }
853     }
854
855 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
856     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
857         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
858         if (ost->reformat_ctx)
859             av_audio_convert_free(ost->reformat_ctx);
860         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
861                                                    dec->sample_fmt, 1, NULL, 0);
862         if (!ost->reformat_ctx) {
863             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
864                 av_get_sample_fmt_name(dec->sample_fmt),
865                 av_get_sample_fmt_name(enc->sample_fmt));
866             exit_program(1);
867         }
868         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
869     }
870
871     if(audio_sync_method){
872         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
873                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
874         double idelta= delta*dec->sample_rate / enc->sample_rate;
875         int byte_delta= ((int)idelta)*2*dec->channels;
876
877         //FIXME resample delay
878         if(fabs(delta) > 50){
879             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
880                 if(byte_delta < 0){
881                     byte_delta= FFMAX(byte_delta, -size);
882                     size += byte_delta;
883                     buf  -= byte_delta;
884                     if(verbose > 2)
885                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
886                     if(!size)
887                         return;
888                     ist->is_start=0;
889                 }else{
890                     static uint8_t *input_tmp= NULL;
891                     input_tmp= av_realloc(input_tmp, byte_delta + size);
892
893                     if(byte_delta > allocated_for_size - size){
894                         allocated_for_size= byte_delta + (int64_t)size;
895                         goto need_realloc;
896                     }
897                     ist->is_start=0;
898
899                     memset(input_tmp, 0, byte_delta);
900                     memcpy(input_tmp + byte_delta, buf, size);
901                     buf= input_tmp;
902                     size += byte_delta;
903                     if(verbose > 2)
904                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
905                 }
906             }else if(audio_sync_method>1){
907                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
908                 av_assert0(ost->audio_resample);
909                 if(verbose > 2)
910                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
911 //                fprintf(stderr, "drift:%f len:%d opts:%"PRId64" ipts:%"PRId64" fifo:%d\n", delta, -1, ost->sync_opts, (int64_t)(get_sync_ipts(ost) * enc->sample_rate), av_fifo_size(ost->fifo)/(ost->st->codec->channels * 2));
912                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
913             }
914         }
915     }else
916         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
917                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
918
919     if (ost->audio_resample) {
920         buftmp = audio_buf;
921         size_out = audio_resample(ost->resample,
922                                   (short *)buftmp, (short *)buf,
923                                   size / (dec->channels * isize));
924         size_out = size_out * enc->channels * osize;
925     } else {
926         buftmp = buf;
927         size_out = size;
928     }
929
930     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
931         const void *ibuf[6]= {buftmp};
932         void *obuf[6]= {audio_buf};
933         int istride[6]= {isize};
934         int ostride[6]= {osize};
935         int len= size_out/istride[0];
936         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
937             printf("av_audio_convert() failed\n");
938             if (exit_on_error)
939                 exit_program(1);
940             return;
941         }
942         buftmp = audio_buf;
943         size_out = len*osize;
944     }
945
946     /* now encode as many frames as possible */
947     if (enc->frame_size > 1) {
948         /* output resampled raw samples */
949         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
950             fprintf(stderr, "av_fifo_realloc2() failed\n");
951             exit_program(1);
952         }
953         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
954
955         frame_bytes = enc->frame_size * osize * enc->channels;
956
957         while (av_fifo_size(ost->fifo) >= frame_bytes) {
958             AVPacket pkt;
959             av_init_packet(&pkt);
960
961             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
962
963             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
964
965             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
966                                        (short *)audio_buf);
967             if (ret < 0) {
968                 fprintf(stderr, "Audio encoding failed\n");
969                 exit_program(1);
970             }
971             audio_size += ret;
972             pkt.stream_index= ost->index;
973             pkt.data= audio_out;
974             pkt.size= ret;
975             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
976                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
977             pkt.flags |= AV_PKT_FLAG_KEY;
978             write_frame(s, &pkt, enc, ost->bitstream_filters);
979
980             ost->sync_opts += enc->frame_size;
981         }
982     } else {
983         AVPacket pkt;
984         av_init_packet(&pkt);
985
986         ost->sync_opts += size_out / (osize * enc->channels);
987
988         /* output a pcm frame */
989         /* determine the size of the coded buffer */
990         size_out /= osize;
991         if (coded_bps)
992             size_out = size_out*coded_bps/8;
993
994         if(size_out > audio_out_size){
995             fprintf(stderr, "Internal error, buffer size too small\n");
996             exit_program(1);
997         }
998
999         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1000         ret = avcodec_encode_audio(enc, audio_out, size_out,
1001                                    (short *)buftmp);
1002         if (ret < 0) {
1003             fprintf(stderr, "Audio encoding failed\n");
1004             exit_program(1);
1005         }
1006         audio_size += ret;
1007         pkt.stream_index= ost->index;
1008         pkt.data= audio_out;
1009         pkt.size= ret;
1010         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1011             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1012         pkt.flags |= AV_PKT_FLAG_KEY;
1013         write_frame(s, &pkt, enc, ost->bitstream_filters);
1014     }
1015 }
1016
1017 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1018 {
1019     AVCodecContext *dec;
1020     AVPicture *picture2;
1021     AVPicture picture_tmp;
1022     uint8_t *buf = 0;
1023
1024     dec = ist->st->codec;
1025
1026     /* deinterlace : must be done before any resize */
1027     if (do_deinterlace) {
1028         int size;
1029
1030         /* create temporary picture */
1031         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1032         buf = av_malloc(size);
1033         if (!buf)
1034             return;
1035
1036         picture2 = &picture_tmp;
1037         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1038
1039         if(avpicture_deinterlace(picture2, picture,
1040                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1041             /* if error, do not deinterlace */
1042             fprintf(stderr, "Deinterlacing failed\n");
1043             av_free(buf);
1044             buf = NULL;
1045             picture2 = picture;
1046         }
1047     } else {
1048         picture2 = picture;
1049     }
1050
1051     if (picture != picture2)
1052         *picture = *picture2;
1053     *bufp = buf;
1054 }
1055
1056 /* we begin to correct av delay at this threshold */
1057 #define AV_DELAY_MAX 0.100
1058
1059 static void do_subtitle_out(AVFormatContext *s,
1060                             OutputStream *ost,
1061                             InputStream *ist,
1062                             AVSubtitle *sub,
1063                             int64_t pts)
1064 {
1065     static uint8_t *subtitle_out = NULL;
1066     int subtitle_out_max_size = 1024 * 1024;
1067     int subtitle_out_size, nb, i;
1068     AVCodecContext *enc;
1069     AVPacket pkt;
1070
1071     if (pts == AV_NOPTS_VALUE) {
1072         fprintf(stderr, "Subtitle packets must have a pts\n");
1073         if (exit_on_error)
1074             exit_program(1);
1075         return;
1076     }
1077
1078     enc = ost->st->codec;
1079
1080     if (!subtitle_out) {
1081         subtitle_out = av_malloc(subtitle_out_max_size);
1082     }
1083
1084     /* Note: DVB subtitle need one packet to draw them and one other
1085        packet to clear them */
1086     /* XXX: signal it in the codec context ? */
1087     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1088         nb = 2;
1089     else
1090         nb = 1;
1091
1092     for(i = 0; i < nb; i++) {
1093         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1094         // start_display_time is required to be 0
1095         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1096         sub->end_display_time -= sub->start_display_time;
1097         sub->start_display_time = 0;
1098         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1099                                                     subtitle_out_max_size, sub);
1100         if (subtitle_out_size < 0) {
1101             fprintf(stderr, "Subtitle encoding failed\n");
1102             exit_program(1);
1103         }
1104
1105         av_init_packet(&pkt);
1106         pkt.stream_index = ost->index;
1107         pkt.data = subtitle_out;
1108         pkt.size = subtitle_out_size;
1109         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1110         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1111             /* XXX: the pts correction is handled here. Maybe handling
1112                it in the codec would be better */
1113             if (i == 0)
1114                 pkt.pts += 90 * sub->start_display_time;
1115             else
1116                 pkt.pts += 90 * sub->end_display_time;
1117         }
1118         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1119     }
1120 }
1121
1122 static int bit_buffer_size= 1024*256;
1123 static uint8_t *bit_buffer= NULL;
1124
1125 static void do_video_out(AVFormatContext *s,
1126                          OutputStream *ost,
1127                          InputStream *ist,
1128                          AVFrame *in_picture,
1129                          int *frame_size, float quality)
1130 {
1131     int nb_frames, i, ret, resample_changed;
1132     AVFrame *final_picture, *formatted_picture;
1133     AVCodecContext *enc, *dec;
1134     double sync_ipts;
1135
1136     enc = ost->st->codec;
1137     dec = ist->st->codec;
1138
1139     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1140
1141     /* by default, we output a single frame */
1142     nb_frames = 1;
1143
1144     *frame_size = 0;
1145
1146     if(video_sync_method){
1147         double vdelta = sync_ipts - ost->sync_opts;
1148         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1149         if (vdelta < -1.1)
1150             nb_frames = 0;
1151         else if (video_sync_method == 2 || (video_sync_method<0 && (s->oformat->flags & AVFMT_VARIABLE_FPS))){
1152             if(vdelta<=-0.6){
1153                 nb_frames=0;
1154             }else if(vdelta>0.6)
1155                 ost->sync_opts= lrintf(sync_ipts);
1156         }else if (vdelta > 1.1)
1157             nb_frames = lrintf(vdelta);
1158 //fprintf(stderr, "vdelta:%f, ost->sync_opts:%"PRId64", ost->sync_ipts:%f nb_frames:%d\n", vdelta, ost->sync_opts, get_sync_ipts(ost), nb_frames);
1159         if (nb_frames == 0){
1160             ++nb_frames_drop;
1161             if (verbose>2)
1162                 fprintf(stderr, "*** drop!\n");
1163         }else if (nb_frames > 1) {
1164             nb_frames_dup += nb_frames - 1;
1165             if (verbose>2)
1166                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1167         }
1168     }else
1169         ost->sync_opts= lrintf(sync_ipts);
1170
1171     nb_frames= FFMIN(nb_frames, max_frames[AVMEDIA_TYPE_VIDEO] - ost->frame_number);
1172     if (nb_frames <= 0)
1173         return;
1174
1175     formatted_picture = in_picture;
1176     final_picture = formatted_picture;
1177
1178     resample_changed = ost->resample_width   != dec->width  ||
1179                        ost->resample_height  != dec->height ||
1180                        ost->resample_pix_fmt != dec->pix_fmt;
1181
1182     if (resample_changed) {
1183         av_log(NULL, AV_LOG_INFO,
1184                "Input stream #%d.%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1185                ist->file_index, ist->st->index,
1186                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1187                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1188         if(!ost->video_resample)
1189             exit_program(1);
1190     }
1191
1192 #if !CONFIG_AVFILTER
1193     if (ost->video_resample) {
1194         final_picture = &ost->pict_tmp;
1195         if (resample_changed) {
1196             /* initialize a new scaler context */
1197             sws_freeContext(ost->img_resample_ctx);
1198             ost->img_resample_ctx = sws_getContext(
1199                 ist->st->codec->width,
1200                 ist->st->codec->height,
1201                 ist->st->codec->pix_fmt,
1202                 ost->st->codec->width,
1203                 ost->st->codec->height,
1204                 ost->st->codec->pix_fmt,
1205                 ost->sws_flags, NULL, NULL, NULL);
1206             if (ost->img_resample_ctx == NULL) {
1207                 fprintf(stderr, "Cannot get resampling context\n");
1208                 exit_program(1);
1209             }
1210         }
1211         sws_scale(ost->img_resample_ctx, formatted_picture->data, formatted_picture->linesize,
1212               0, ost->resample_height, final_picture->data, final_picture->linesize);
1213     }
1214 #endif
1215
1216     /* duplicates frame if needed */
1217     for(i=0;i<nb_frames;i++) {
1218         AVPacket pkt;
1219         av_init_packet(&pkt);
1220         pkt.stream_index= ost->index;
1221
1222         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1223             /* raw pictures are written as AVPicture structure to
1224                avoid any copies. We support temorarily the older
1225                method. */
1226             AVFrame* old_frame = enc->coded_frame;
1227             enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
1228             pkt.data= (uint8_t *)final_picture;
1229             pkt.size=  sizeof(AVPicture);
1230             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1231             pkt.flags |= AV_PKT_FLAG_KEY;
1232
1233             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1234             enc->coded_frame = old_frame;
1235         } else {
1236             AVFrame big_picture;
1237
1238             big_picture= *final_picture;
1239             /* better than nothing: use input picture interlaced
1240                settings */
1241             big_picture.interlaced_frame = in_picture->interlaced_frame;
1242             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1243                 if(top_field_first == -1)
1244                     big_picture.top_field_first = in_picture->top_field_first;
1245                 else
1246                     big_picture.top_field_first = top_field_first;
1247             }
1248
1249             /* handles sameq here. This is not correct because it may
1250                not be a global option */
1251             big_picture.quality = quality;
1252             if(!me_threshold)
1253                 big_picture.pict_type = 0;
1254 //            big_picture.pts = AV_NOPTS_VALUE;
1255             big_picture.pts= ost->sync_opts;
1256 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1257 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1258             if (ost->forced_kf_index < ost->forced_kf_count &&
1259                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1260                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1261                 ost->forced_kf_index++;
1262             }
1263             ret = avcodec_encode_video(enc,
1264                                        bit_buffer, bit_buffer_size,
1265                                        &big_picture);
1266             if (ret < 0) {
1267                 fprintf(stderr, "Video encoding failed\n");
1268                 exit_program(1);
1269             }
1270
1271             if(ret>0){
1272                 pkt.data= bit_buffer;
1273                 pkt.size= ret;
1274                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1275                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1276 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1277    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1278    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1279
1280                 if(enc->coded_frame->key_frame)
1281                     pkt.flags |= AV_PKT_FLAG_KEY;
1282                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1283                 *frame_size = ret;
1284                 video_size += ret;
1285                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1286                 //        enc->frame_number-1, ret, enc->pict_type);
1287                 /* if two pass, output log */
1288                 if (ost->logfile && enc->stats_out) {
1289                     fprintf(ost->logfile, "%s", enc->stats_out);
1290                 }
1291             }
1292         }
1293         ost->sync_opts++;
1294         ost->frame_number++;
1295     }
1296 }
1297
1298 static double psnr(double d){
1299     return -10.0*log(d)/log(10.0);
1300 }
1301
1302 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1303                            int frame_size)
1304 {
1305     AVCodecContext *enc;
1306     int frame_number;
1307     double ti1, bitrate, avg_bitrate;
1308
1309     /* this is executed just the first time do_video_stats is called */
1310     if (!vstats_file) {
1311         vstats_file = fopen(vstats_filename, "w");
1312         if (!vstats_file) {
1313             perror("fopen");
1314             exit_program(1);
1315         }
1316     }
1317
1318     enc = ost->st->codec;
1319     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1320         frame_number = ost->frame_number;
1321         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1322         if (enc->flags&CODEC_FLAG_PSNR)
1323             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1324
1325         fprintf(vstats_file,"f_size= %6d ", frame_size);
1326         /* compute pts value */
1327         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1328         if (ti1 < 0.01)
1329             ti1 = 0.01;
1330
1331         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1332         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1333         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1334             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1335         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1336     }
1337 }
1338
1339 static void print_report(AVFormatContext **output_files,
1340                          OutputStream **ost_table, int nb_ostreams,
1341                          int is_last_report)
1342 {
1343     char buf[1024];
1344     OutputStream *ost;
1345     AVFormatContext *oc;
1346     int64_t total_size;
1347     AVCodecContext *enc;
1348     int frame_number, vid, i;
1349     double bitrate, ti1, pts;
1350     static int64_t last_time = -1;
1351     static int qp_histogram[52];
1352
1353     if (!is_last_report) {
1354         int64_t cur_time;
1355         /* display the report every 0.5 seconds */
1356         cur_time = av_gettime();
1357         if (last_time == -1) {
1358             last_time = cur_time;
1359             return;
1360         }
1361         if ((cur_time - last_time) < 500000)
1362             return;
1363         last_time = cur_time;
1364     }
1365
1366
1367     oc = output_files[0];
1368
1369     total_size = avio_size(oc->pb);
1370     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1371         total_size= avio_tell(oc->pb);
1372
1373     buf[0] = '\0';
1374     ti1 = 1e10;
1375     vid = 0;
1376     for(i=0;i<nb_ostreams;i++) {
1377         float q = -1;
1378         ost = ost_table[i];
1379         enc = ost->st->codec;
1380         if (!ost->st->stream_copy && enc->coded_frame)
1381             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1382         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1383             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1384         }
1385         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1386             float t = (av_gettime()-timer_start) / 1000000.0;
1387
1388             frame_number = ost->frame_number;
1389             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1390                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1391             if(is_last_report)
1392                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1393             if(qp_hist){
1394                 int j;
1395                 int qp = lrintf(q);
1396                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1397                     qp_histogram[qp]++;
1398                 for(j=0; j<32; j++)
1399                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1400             }
1401             if (enc->flags&CODEC_FLAG_PSNR){
1402                 int j;
1403                 double error, error_sum=0;
1404                 double scale, scale_sum=0;
1405                 char type[3]= {'Y','U','V'};
1406                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1407                 for(j=0; j<3; j++){
1408                     if(is_last_report){
1409                         error= enc->error[j];
1410                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1411                     }else{
1412                         error= enc->coded_frame->error[j];
1413                         scale= enc->width*enc->height*255.0*255.0;
1414                     }
1415                     if(j) scale/=4;
1416                     error_sum += error;
1417                     scale_sum += scale;
1418                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1419                 }
1420                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1421             }
1422             vid = 1;
1423         }
1424         /* compute min output value */
1425         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1426         if ((pts < ti1) && (pts > 0))
1427             ti1 = pts;
1428     }
1429     if (ti1 < 0.01)
1430         ti1 = 0.01;
1431
1432     if (verbose > 0 || is_last_report) {
1433         bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1434
1435         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1436             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1437             (double)total_size / 1024, ti1, bitrate);
1438
1439         if (nb_frames_dup || nb_frames_drop)
1440           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1441                   nb_frames_dup, nb_frames_drop);
1442
1443         if (verbose >= 0)
1444             fprintf(stderr, "%s    \r", buf);
1445
1446         fflush(stderr);
1447     }
1448
1449     if (is_last_report && verbose >= 0){
1450         int64_t raw= audio_size + video_size + extra_size;
1451         fprintf(stderr, "\n");
1452         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1453                 video_size/1024.0,
1454                 audio_size/1024.0,
1455                 extra_size/1024.0,
1456                 100.0*(total_size - raw)/raw
1457         );
1458     }
1459 }
1460
1461 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1462 {
1463     int fill_char = 0x00;
1464     if (sample_fmt == AV_SAMPLE_FMT_U8)
1465         fill_char = 0x80;
1466     memset(buf, fill_char, size);
1467 }
1468
1469 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1470 static int output_packet(InputStream *ist, int ist_index,
1471                          OutputStream **ost_table, int nb_ostreams,
1472                          const AVPacket *pkt)
1473 {
1474     AVFormatContext *os;
1475     OutputStream *ost;
1476     int ret, i;
1477     int got_output;
1478     AVFrame picture;
1479     void *buffer_to_free = NULL;
1480     static unsigned int samples_size= 0;
1481     AVSubtitle subtitle, *subtitle_to_free;
1482     int64_t pkt_pts = AV_NOPTS_VALUE;
1483 #if CONFIG_AVFILTER
1484     int frame_available;
1485 #endif
1486     float quality;
1487
1488     AVPacket avpkt;
1489     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1490
1491     if(ist->next_pts == AV_NOPTS_VALUE)
1492         ist->next_pts= ist->pts;
1493
1494     if (pkt == NULL) {
1495         /* EOF handling */
1496         av_init_packet(&avpkt);
1497         avpkt.data = NULL;
1498         avpkt.size = 0;
1499         goto handle_eof;
1500     } else {
1501         avpkt = *pkt;
1502     }
1503
1504     if(pkt->dts != AV_NOPTS_VALUE)
1505         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1506     if(pkt->pts != AV_NOPTS_VALUE)
1507         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1508
1509     //while we have more to decode or while the decoder did output something on EOF
1510     while (avpkt.size > 0 || (!pkt && got_output)) {
1511         uint8_t *data_buf, *decoded_data_buf;
1512         int data_size, decoded_data_size;
1513     handle_eof:
1514         ist->pts= ist->next_pts;
1515
1516         if(avpkt.size && avpkt.size != pkt->size &&
1517            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1518             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1519             ist->showed_multi_packet_warning=1;
1520         }
1521
1522         /* decode the packet if needed */
1523         decoded_data_buf = NULL; /* fail safe */
1524         decoded_data_size= 0;
1525         data_buf  = avpkt.data;
1526         data_size = avpkt.size;
1527         subtitle_to_free = NULL;
1528         if (ist->decoding_needed) {
1529             switch(ist->st->codec->codec_type) {
1530             case AVMEDIA_TYPE_AUDIO:{
1531                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1532                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1533                     av_free(samples);
1534                     samples= av_malloc(samples_size);
1535                 }
1536                 decoded_data_size= samples_size;
1537                     /* XXX: could avoid copy if PCM 16 bits with same
1538                        endianness as CPU */
1539                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1540                                             &avpkt);
1541                 if (ret < 0)
1542                     return ret;
1543                 avpkt.data += ret;
1544                 avpkt.size -= ret;
1545                 data_size   = ret;
1546                 got_output  = decoded_data_size > 0;
1547                 /* Some bug in mpeg audio decoder gives */
1548                 /* decoded_data_size < 0, it seems they are overflows */
1549                 if (!got_output) {
1550                     /* no audio frame */
1551                     continue;
1552                 }
1553                 decoded_data_buf = (uint8_t *)samples;
1554                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1555                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1556                 break;}
1557             case AVMEDIA_TYPE_VIDEO:
1558                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1559                     /* XXX: allocate picture correctly */
1560                     avcodec_get_frame_defaults(&picture);
1561                     avpkt.pts = pkt_pts;
1562                     avpkt.dts = ist->pts;
1563                     pkt_pts = AV_NOPTS_VALUE;
1564
1565                     ret = avcodec_decode_video2(ist->st->codec,
1566                                                 &picture, &got_output, &avpkt);
1567                     quality = same_quality ? picture.quality : 0;
1568                     if (ret < 0)
1569                         return ret;
1570                     if (!got_output) {
1571                         /* no picture yet */
1572                         goto discard_packet;
1573                     }
1574                     ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, picture.pkt_pts, picture.pkt_dts);
1575                     if (ist->st->codec->time_base.num != 0) {
1576                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1577                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1578                                           ist->st->codec->time_base.num * ticks) /
1579                             ist->st->codec->time_base.den;
1580                     }
1581                     avpkt.size = 0;
1582                     buffer_to_free = NULL;
1583                     pre_process_video_frame(ist, (AVPicture *)&picture, &buffer_to_free);
1584                     break;
1585             case AVMEDIA_TYPE_SUBTITLE:
1586                 ret = avcodec_decode_subtitle2(ist->st->codec,
1587                                                &subtitle, &got_output, &avpkt);
1588                 if (ret < 0)
1589                     return ret;
1590                 if (!got_output) {
1591                     goto discard_packet;
1592                 }
1593                 subtitle_to_free = &subtitle;
1594                 avpkt.size = 0;
1595                 break;
1596             default:
1597                 return -1;
1598             }
1599         } else {
1600             switch(ist->st->codec->codec_type) {
1601             case AVMEDIA_TYPE_AUDIO:
1602                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1603                     ist->st->codec->sample_rate;
1604                 break;
1605             case AVMEDIA_TYPE_VIDEO:
1606                 if (ist->st->codec->time_base.num != 0) {
1607                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1608                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1609                                       ist->st->codec->time_base.num * ticks) /
1610                         ist->st->codec->time_base.den;
1611                 }
1612                 break;
1613             }
1614             ret = avpkt.size;
1615             avpkt.size = 0;
1616         }
1617
1618 #if CONFIG_AVFILTER
1619         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1620             for (i = 0; i < nb_ostreams; i++) {
1621                 ost = ost_table[i];
1622                 if (ost->input_video_filter && ost->source_index == ist_index) {
1623                     AVRational sar;
1624                     if (ist->st->sample_aspect_ratio.num)
1625                         sar = ist->st->sample_aspect_ratio;
1626                     else
1627                         sar = ist->st->codec->sample_aspect_ratio;
1628                     // add it to be filtered
1629                     av_vsrc_buffer_add_frame(ost->input_video_filter, &picture,
1630                                              ist->pts,
1631                                              sar);
1632                 }
1633             }
1634         }
1635 #endif
1636
1637         // preprocess audio (volume)
1638         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1639             if (audio_volume != 256) {
1640                 short *volp;
1641                 volp = samples;
1642                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1643                     int v = ((*volp) * audio_volume + 128) >> 8;
1644                     if (v < -32768) v = -32768;
1645                     if (v >  32767) v = 32767;
1646                     *volp++ = v;
1647                 }
1648             }
1649         }
1650
1651         /* frame rate emulation */
1652         if (rate_emu) {
1653             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1654             int64_t now = av_gettime() - ist->start;
1655             if (pts > now)
1656                 usleep(pts - now);
1657         }
1658         /* if output time reached then transcode raw format,
1659            encode packets and output them */
1660         if (start_time == 0 || ist->pts >= start_time)
1661             for(i=0;i<nb_ostreams;i++) {
1662                 int frame_size;
1663
1664                 ost = ost_table[i];
1665                 if (ost->source_index == ist_index) {
1666 #if CONFIG_AVFILTER
1667                 frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1668                     !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1669                 while (frame_available) {
1670                     AVRational ist_pts_tb;
1671                     if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter)
1672                         get_filtered_video_frame(ost->output_video_filter, &picture, &ost->picref, &ist_pts_tb);
1673                     if (ost->picref)
1674                         ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1675 #endif
1676                     os = output_files[ost->file_index];
1677
1678                     /* set the input output pts pairs */
1679                     //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
1680
1681                     if (ost->encoding_needed) {
1682                         av_assert0(ist->decoding_needed);
1683                         switch(ost->st->codec->codec_type) {
1684                         case AVMEDIA_TYPE_AUDIO:
1685                             do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1686                             break;
1687                         case AVMEDIA_TYPE_VIDEO:
1688 #if CONFIG_AVFILTER
1689                             if (ost->picref->video && !ost->frame_aspect_ratio)
1690                                 ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
1691 #endif
1692                             do_video_out(os, ost, ist, &picture, &frame_size,
1693                                          same_quality ? quality : ost->st->codec->global_quality);
1694                             if (vstats_filename && frame_size)
1695                                 do_video_stats(os, ost, frame_size);
1696                             break;
1697                         case AVMEDIA_TYPE_SUBTITLE:
1698                             do_subtitle_out(os, ost, ist, &subtitle,
1699                                             pkt->pts);
1700                             break;
1701                         default:
1702                             abort();
1703                         }
1704                     } else {
1705                         AVFrame avframe; //FIXME/XXX remove this
1706                         AVPacket opkt;
1707                         int64_t ost_tb_start_time= av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1708
1709                         av_init_packet(&opkt);
1710
1711                         if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1712 #if !CONFIG_AVFILTER
1713                             continue;
1714 #else
1715                             goto cont;
1716 #endif
1717
1718                         /* no reencoding needed : output the packet directly */
1719                         /* force the input stream PTS */
1720
1721                         avcodec_get_frame_defaults(&avframe);
1722                         ost->st->codec->coded_frame= &avframe;
1723                         avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1724
1725                         if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1726                             audio_size += data_size;
1727                         else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1728                             video_size += data_size;
1729                             ost->sync_opts++;
1730                         }
1731
1732                         opkt.stream_index= ost->index;
1733                         if(pkt->pts != AV_NOPTS_VALUE)
1734                             opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1735                         else
1736                             opkt.pts= AV_NOPTS_VALUE;
1737
1738                         if (pkt->dts == AV_NOPTS_VALUE)
1739                             opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1740                         else
1741                             opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1742                         opkt.dts -= ost_tb_start_time;
1743
1744                         opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1745                         opkt.flags= pkt->flags;
1746
1747                         //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1748                         if(   ost->st->codec->codec_id != CODEC_ID_H264
1749                            && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1750                            && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1751                            ) {
1752                             if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1753                                 opkt.destruct= av_destruct_packet;
1754                         } else {
1755                             opkt.data = data_buf;
1756                             opkt.size = data_size;
1757                         }
1758
1759                         write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1760                         ost->st->codec->frame_number++;
1761                         ost->frame_number++;
1762                         av_free_packet(&opkt);
1763                     }
1764 #if CONFIG_AVFILTER
1765                     cont:
1766                     frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1767                                        ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1768                     if (ost->picref)
1769                         avfilter_unref_buffer(ost->picref);
1770                 }
1771 #endif
1772                 }
1773             }
1774
1775         av_free(buffer_to_free);
1776         /* XXX: allocate the subtitles in the codec ? */
1777         if (subtitle_to_free) {
1778             avsubtitle_free(subtitle_to_free);
1779             subtitle_to_free = NULL;
1780         }
1781     }
1782  discard_packet:
1783     if (pkt == NULL) {
1784         /* EOF handling */
1785
1786         for(i=0;i<nb_ostreams;i++) {
1787             ost = ost_table[i];
1788             if (ost->source_index == ist_index) {
1789                 AVCodecContext *enc= ost->st->codec;
1790                 os = output_files[ost->file_index];
1791
1792                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1793                     continue;
1794                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1795                     continue;
1796
1797                 if (ost->encoding_needed) {
1798                     for(;;) {
1799                         AVPacket pkt;
1800                         int fifo_bytes;
1801                         av_init_packet(&pkt);
1802                         pkt.stream_index= ost->index;
1803
1804                         switch(ost->st->codec->codec_type) {
1805                         case AVMEDIA_TYPE_AUDIO:
1806                             fifo_bytes = av_fifo_size(ost->fifo);
1807                             ret = 0;
1808                             /* encode any samples remaining in fifo */
1809                             if (fifo_bytes > 0) {
1810                                 int osize = av_get_bytes_per_sample(enc->sample_fmt);
1811                                 int fs_tmp = enc->frame_size;
1812
1813                                 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1814                                 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1815                                     enc->frame_size = fifo_bytes / (osize * enc->channels);
1816                                 } else { /* pad */
1817                                     int frame_bytes = enc->frame_size*osize*enc->channels;
1818                                     if (allocated_audio_buf_size < frame_bytes)
1819                                         exit_program(1);
1820                                     generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1821                                 }
1822
1823                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1824                                 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1825                                                           ost->st->time_base.num, enc->sample_rate);
1826                                 enc->frame_size = fs_tmp;
1827                             }
1828                             if(ret <= 0) {
1829                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1830                             }
1831                             if (ret < 0) {
1832                                 fprintf(stderr, "Audio encoding failed\n");
1833                                 exit_program(1);
1834                             }
1835                             audio_size += ret;
1836                             pkt.flags |= AV_PKT_FLAG_KEY;
1837                             break;
1838                         case AVMEDIA_TYPE_VIDEO:
1839                             ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1840                             if (ret < 0) {
1841                                 fprintf(stderr, "Video encoding failed\n");
1842                                 exit_program(1);
1843                             }
1844                             video_size += ret;
1845                             if(enc->coded_frame && enc->coded_frame->key_frame)
1846                                 pkt.flags |= AV_PKT_FLAG_KEY;
1847                             if (ost->logfile && enc->stats_out) {
1848                                 fprintf(ost->logfile, "%s", enc->stats_out);
1849                             }
1850                             break;
1851                         default:
1852                             ret=-1;
1853                         }
1854
1855                         if(ret<=0)
1856                             break;
1857                         pkt.data= bit_buffer;
1858                         pkt.size= ret;
1859                         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1860                             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1861                         write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1862                     }
1863                 }
1864             }
1865         }
1866     }
1867
1868     return 0;
1869 }
1870
1871 static void print_sdp(AVFormatContext **avc, int n)
1872 {
1873     char sdp[2048];
1874
1875     av_sdp_create(avc, n, sdp, sizeof(sdp));
1876     printf("SDP:\n%s\n", sdp);
1877     fflush(stdout);
1878 }
1879
1880 static int copy_chapters(int infile, int outfile)
1881 {
1882     AVFormatContext *is = input_files[infile].ctx;
1883     AVFormatContext *os = output_files[outfile];
1884     int i;
1885
1886     for (i = 0; i < is->nb_chapters; i++) {
1887         AVChapter *in_ch = is->chapters[i], *out_ch;
1888         int64_t ts_off   = av_rescale_q(start_time - input_files[infile].ts_offset,
1889                                       AV_TIME_BASE_Q, in_ch->time_base);
1890         int64_t rt       = (recording_time == INT64_MAX) ? INT64_MAX :
1891                            av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
1892
1893
1894         if (in_ch->end < ts_off)
1895             continue;
1896         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
1897             break;
1898
1899         out_ch = av_mallocz(sizeof(AVChapter));
1900         if (!out_ch)
1901             return AVERROR(ENOMEM);
1902
1903         out_ch->id        = in_ch->id;
1904         out_ch->time_base = in_ch->time_base;
1905         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
1906         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
1907
1908         if (metadata_chapters_autocopy)
1909             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
1910
1911         os->nb_chapters++;
1912         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
1913         if (!os->chapters)
1914             return AVERROR(ENOMEM);
1915         os->chapters[os->nb_chapters - 1] = out_ch;
1916     }
1917     return 0;
1918 }
1919
1920 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1921                                     AVCodecContext *avctx)
1922 {
1923     char *p;
1924     int n = 1, i;
1925     int64_t t;
1926
1927     for (p = kf; *p; p++)
1928         if (*p == ',')
1929             n++;
1930     ost->forced_kf_count = n;
1931     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1932     if (!ost->forced_kf_pts) {
1933         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1934         exit_program(1);
1935     }
1936     for (i = 0; i < n; i++) {
1937         p = i ? strchr(p, ',') + 1 : kf;
1938         t = parse_time_or_die("force_key_frames", p, 1);
1939         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1940     }
1941 }
1942
1943 /*
1944  * The following code is the main loop of the file converter
1945  */
1946 static int transcode(AVFormatContext **output_files,
1947                      int nb_output_files,
1948                      InputFile *input_files,
1949                      int nb_input_files,
1950                      StreamMap *stream_maps, int nb_stream_maps)
1951 {
1952     int ret = 0, i, j, k, n, nb_ostreams = 0;
1953     AVFormatContext *is, *os;
1954     AVCodecContext *codec, *icodec;
1955     OutputStream *ost, **ost_table = NULL;
1956     InputStream *ist;
1957     char error[1024];
1958     int want_sdp = 1;
1959     uint8_t no_packet[MAX_FILES]={0};
1960     int no_packet_count=0;
1961
1962     if (rate_emu)
1963         for (i = 0; i < nb_input_streams; i++)
1964             input_streams[i].start = av_gettime();
1965
1966     /* output stream init */
1967     nb_ostreams = 0;
1968     for(i=0;i<nb_output_files;i++) {
1969         os = output_files[i];
1970         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1971             av_dump_format(output_files[i], i, output_files[i]->filename, 1);
1972             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
1973             ret = AVERROR(EINVAL);
1974             goto fail;
1975         }
1976         nb_ostreams += os->nb_streams;
1977     }
1978     if (nb_stream_maps > 0 && nb_stream_maps != nb_ostreams) {
1979         fprintf(stderr, "Number of stream maps must match number of output streams\n");
1980         ret = AVERROR(EINVAL);
1981         goto fail;
1982     }
1983
1984     /* Sanity check the mapping args -- do the input files & streams exist? */
1985     for(i=0;i<nb_stream_maps;i++) {
1986         int fi = stream_maps[i].file_index;
1987         int si = stream_maps[i].stream_index;
1988
1989         if (fi < 0 || fi > nb_input_files - 1 ||
1990             si < 0 || si > input_files[fi].ctx->nb_streams - 1) {
1991             fprintf(stderr,"Could not find input stream #%d.%d\n", fi, si);
1992             ret = AVERROR(EINVAL);
1993             goto fail;
1994         }
1995         fi = stream_maps[i].sync_file_index;
1996         si = stream_maps[i].sync_stream_index;
1997         if (fi < 0 || fi > nb_input_files - 1 ||
1998             si < 0 || si > input_files[fi].ctx->nb_streams - 1) {
1999             fprintf(stderr,"Could not find sync stream #%d.%d\n", fi, si);
2000             ret = AVERROR(EINVAL);
2001             goto fail;
2002         }
2003     }
2004
2005     ost_table = av_mallocz(sizeof(OutputStream *) * nb_ostreams);
2006     if (!ost_table)
2007         goto fail;
2008     n = 0;
2009     for(k=0;k<nb_output_files;k++) {
2010         os = output_files[k];
2011         for(i=0;i<os->nb_streams;i++,n++) {
2012             int found;
2013             ost = ost_table[n] = output_streams_for_file[k][i];
2014             if (nb_stream_maps > 0) {
2015                 ost->source_index = input_files[stream_maps[n].file_index].ist_index +
2016                     stream_maps[n].stream_index;
2017
2018                 /* Sanity check that the stream types match */
2019                 if (input_streams[ost->source_index].st->codec->codec_type != ost->st->codec->codec_type) {
2020                     int i= ost->file_index;
2021                     av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2022                     fprintf(stderr, "Codec type mismatch for mapping #%d.%d -> #%d.%d\n",
2023                         stream_maps[n].file_index, stream_maps[n].stream_index,
2024                         ost->file_index, ost->index);
2025                     exit_program(1);
2026                 }
2027
2028             } else {
2029                 int best_nb_frames=-1;
2030                 /* get corresponding input stream index : we select the first one with the right type */
2031                 found = 0;
2032                 for (j = 0; j < nb_input_streams; j++) {
2033                     int skip=0;
2034                     ist = &input_streams[j];
2035                     if(opt_programid){
2036                         int pi,si;
2037                         AVFormatContext *f = input_files[ist->file_index].ctx;
2038                         skip=1;
2039                         for(pi=0; pi<f->nb_programs; pi++){
2040                             AVProgram *p= f->programs[pi];
2041                             if(p->id == opt_programid)
2042                                 for(si=0; si<p->nb_stream_indexes; si++){
2043                                     if(f->streams[ p->stream_index[si] ] == ist->st)
2044                                         skip=0;
2045                                 }
2046                         }
2047                     }
2048                     if (ist->discard && ist->st->discard != AVDISCARD_ALL && !skip &&
2049                         ist->st->codec->codec_type == ost->st->codec->codec_type) {
2050                         if(best_nb_frames < ist->st->codec_info_nb_frames){
2051                             best_nb_frames= ist->st->codec_info_nb_frames;
2052                             ost->source_index = j;
2053                             found = 1;
2054                         }
2055                     }
2056                 }
2057
2058                 if (!found) {
2059                     if(! opt_programid) {
2060                         /* try again and reuse existing stream */
2061                         for (j = 0; j < nb_input_streams; j++) {
2062                             ist = &input_streams[j];
2063                             if (   ist->st->codec->codec_type == ost->st->codec->codec_type
2064                                 && ist->st->discard != AVDISCARD_ALL) {
2065                                 ost->source_index = j;
2066                                 found = 1;
2067                             }
2068                         }
2069                     }
2070                     if (!found) {
2071                         int i= ost->file_index;
2072                         av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2073                         fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",
2074                                 ost->file_index, ost->index);
2075                         exit_program(1);
2076                     }
2077                 }
2078             }
2079             ist = &input_streams[ost->source_index];
2080             ist->discard = 0;
2081             ost->sync_ist = (nb_stream_maps > 0) ?
2082                 &input_streams[input_files[stream_maps[n].sync_file_index].ist_index +
2083                          stream_maps[n].sync_stream_index] : ist;
2084         }
2085     }
2086
2087     /* for each output stream, we compute the right encoding parameters */
2088     for(i=0;i<nb_ostreams;i++) {
2089         ost = ost_table[i];
2090         os = output_files[ost->file_index];
2091         ist = &input_streams[ost->source_index];
2092
2093         codec = ost->st->codec;
2094         icodec = ist->st->codec;
2095
2096         if (metadata_streams_autocopy)
2097             av_dict_copy(&ost->st->metadata, ist->st->metadata,
2098                          AV_DICT_DONT_OVERWRITE);
2099
2100         ost->st->disposition = ist->st->disposition;
2101         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2102         codec->chroma_sample_location = icodec->chroma_sample_location;
2103
2104         if (ost->st->stream_copy) {
2105             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2106
2107             if (extra_size > INT_MAX)
2108                 goto fail;
2109
2110             /* if stream_copy is selected, no need to decode or encode */
2111             codec->codec_id = icodec->codec_id;
2112             codec->codec_type = icodec->codec_type;
2113
2114             if(!codec->codec_tag){
2115                 if(   !os->oformat->codec_tag
2116                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2117                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2118                     codec->codec_tag = icodec->codec_tag;
2119             }
2120
2121             codec->bit_rate = icodec->bit_rate;
2122             codec->rc_max_rate    = icodec->rc_max_rate;
2123             codec->rc_buffer_size = icodec->rc_buffer_size;
2124             codec->extradata= av_mallocz(extra_size);
2125             if (!codec->extradata)
2126                 goto fail;
2127             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2128             codec->extradata_size= icodec->extradata_size;
2129             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){
2130                 codec->time_base = icodec->time_base;
2131                 codec->time_base.num *= icodec->ticks_per_frame;
2132                 av_reduce(&codec->time_base.num, &codec->time_base.den,
2133                           codec->time_base.num, codec->time_base.den, INT_MAX);
2134             }else
2135                 codec->time_base = ist->st->time_base;
2136             switch(codec->codec_type) {
2137             case AVMEDIA_TYPE_AUDIO:
2138                 if(audio_volume != 256) {
2139                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2140                     exit_program(1);
2141                 }
2142                 codec->channel_layout = icodec->channel_layout;
2143                 codec->sample_rate = icodec->sample_rate;
2144                 codec->channels = icodec->channels;
2145                 codec->frame_size = icodec->frame_size;
2146                 codec->audio_service_type = icodec->audio_service_type;
2147                 codec->block_align= icodec->block_align;
2148                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2149                     codec->block_align= 0;
2150                 if(codec->codec_id == CODEC_ID_AC3)
2151                     codec->block_align= 0;
2152                 break;
2153             case AVMEDIA_TYPE_VIDEO:
2154                 codec->pix_fmt = icodec->pix_fmt;
2155                 codec->width = icodec->width;
2156                 codec->height = icodec->height;
2157                 codec->has_b_frames = icodec->has_b_frames;
2158                 if (!codec->sample_aspect_ratio.num) {
2159                     codec->sample_aspect_ratio =
2160                     ost->st->sample_aspect_ratio =
2161                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2162                         ist->st->codec->sample_aspect_ratio.num ?
2163                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2164                 }
2165                 break;
2166             case AVMEDIA_TYPE_SUBTITLE:
2167                 codec->width = icodec->width;
2168                 codec->height = icodec->height;
2169                 break;
2170             case AVMEDIA_TYPE_DATA:
2171                 break;
2172             default:
2173                 abort();
2174             }
2175         } else {
2176             if (!ost->enc)
2177                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2178             switch(codec->codec_type) {
2179             case AVMEDIA_TYPE_AUDIO:
2180                 ost->fifo= av_fifo_alloc(1024);
2181                 if(!ost->fifo)
2182                     goto fail;
2183                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2184                 if (!codec->sample_rate) {
2185                     codec->sample_rate = icodec->sample_rate;
2186                     if (icodec->lowres)
2187                         codec->sample_rate >>= icodec->lowres;
2188                 }
2189                 choose_sample_rate(ost->st, ost->enc);
2190                 codec->time_base = (AVRational){1, codec->sample_rate};
2191                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2192                     codec->sample_fmt = icodec->sample_fmt;
2193                 choose_sample_fmt(ost->st, ost->enc);
2194                 if (!codec->channels)
2195                     codec->channels = icodec->channels;
2196                 codec->channel_layout = icodec->channel_layout;
2197                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2198                     codec->channel_layout = 0;
2199                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2200                 icodec->request_channels = codec->channels;
2201                 ist->decoding_needed = 1;
2202                 ost->encoding_needed = 1;
2203                 ost->resample_sample_fmt  = icodec->sample_fmt;
2204                 ost->resample_sample_rate = icodec->sample_rate;
2205                 ost->resample_channels    = icodec->channels;
2206                 break;
2207             case AVMEDIA_TYPE_VIDEO:
2208                 if (codec->pix_fmt == PIX_FMT_NONE)
2209                     codec->pix_fmt = icodec->pix_fmt;
2210                 choose_pixel_fmt(ost->st, ost->enc);
2211
2212                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2213                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2214                     exit_program(1);
2215                 }
2216
2217                 if (!codec->width || !codec->height) {
2218                     codec->width  = icodec->width;
2219                     codec->height = icodec->height;
2220                 }
2221
2222                 ost->video_resample = codec->width   != icodec->width  ||
2223                                       codec->height  != icodec->height ||
2224                                       codec->pix_fmt != icodec->pix_fmt;
2225                 if (ost->video_resample) {
2226 #if !CONFIG_AVFILTER
2227                     avcodec_get_frame_defaults(&ost->pict_tmp);
2228                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2229                                        codec->width, codec->height)) {
2230                         fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
2231                         exit_program(1);
2232                     }
2233                     ost->img_resample_ctx = sws_getContext(
2234                         icodec->width,
2235                         icodec->height,
2236                         icodec->pix_fmt,
2237                         codec->width,
2238                         codec->height,
2239                         codec->pix_fmt,
2240                         ost->sws_flags, NULL, NULL, NULL);
2241                     if (ost->img_resample_ctx == NULL) {
2242                         fprintf(stderr, "Cannot get resampling context\n");
2243                         exit_program(1);
2244                     }
2245 #endif
2246                     codec->bits_per_raw_sample= 0;
2247                 }
2248
2249                 ost->resample_height = icodec->height;
2250                 ost->resample_width  = icodec->width;
2251                 ost->resample_pix_fmt= icodec->pix_fmt;
2252                 ost->encoding_needed = 1;
2253                 ist->decoding_needed = 1;
2254
2255                 if (!ost->frame_rate.num)
2256                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2257                 if (ost->enc && ost->enc->supported_framerates && !force_fps) {
2258                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2259                     ost->frame_rate = ost->enc->supported_framerates[idx];
2260                 }
2261                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2262
2263 #if CONFIG_AVFILTER
2264                 if (configure_video_filters(ist, ost)) {
2265                     fprintf(stderr, "Error opening filters!\n");
2266                     exit(1);
2267                 }
2268 #endif
2269                 break;
2270             case AVMEDIA_TYPE_SUBTITLE:
2271                 ost->encoding_needed = 1;
2272                 ist->decoding_needed = 1;
2273                 break;
2274             default:
2275                 abort();
2276                 break;
2277             }
2278             /* two pass mode */
2279             if (ost->encoding_needed &&
2280                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2281                 char logfilename[1024];
2282                 FILE *f;
2283
2284                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2285                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2286                          i);
2287                 if (codec->flags & CODEC_FLAG_PASS1) {
2288                     f = fopen(logfilename, "wb");
2289                     if (!f) {
2290                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2291                         exit_program(1);
2292                     }
2293                     ost->logfile = f;
2294                 } else {
2295                     char  *logbuffer;
2296                     size_t logbuffer_size;
2297                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2298                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2299                         exit_program(1);
2300                     }
2301                     codec->stats_in = logbuffer;
2302                 }
2303             }
2304         }
2305         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2306             int size= codec->width * codec->height;
2307             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2308         }
2309     }
2310
2311     if (!bit_buffer)
2312         bit_buffer = av_malloc(bit_buffer_size);
2313     if (!bit_buffer) {
2314         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2315                 bit_buffer_size);
2316         ret = AVERROR(ENOMEM);
2317         goto fail;
2318     }
2319
2320     /* open each encoder */
2321     for(i=0;i<nb_ostreams;i++) {
2322         ost = ost_table[i];
2323         if (ost->encoding_needed) {
2324             AVCodec *codec = ost->enc;
2325             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2326             if (!codec) {
2327                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2328                          ost->st->codec->codec_id, ost->file_index, ost->index);
2329                 ret = AVERROR(EINVAL);
2330                 goto dump_format;
2331             }
2332             if (dec->subtitle_header) {
2333                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2334                 if (!ost->st->codec->subtitle_header) {
2335                     ret = AVERROR(ENOMEM);
2336                     goto dump_format;
2337                 }
2338                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2339                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2340             }
2341             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2342                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2343                         ost->file_index, ost->index);
2344                 ret = AVERROR(EINVAL);
2345                 goto dump_format;
2346             }
2347             assert_codec_experimental(ost->st->codec, 1);
2348             assert_avoptions(ost->opts);
2349             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2350                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2351                                              "It takes bits/s as argument, not kbits/s\n");
2352             extra_size += ost->st->codec->extradata_size;
2353         }
2354     }
2355
2356     /* open each decoder */
2357     for (i = 0; i < nb_input_streams; i++) {
2358         ist = &input_streams[i];
2359         if (ist->decoding_needed) {
2360             AVCodec *codec = ist->dec;
2361             if (!codec)
2362                 codec = avcodec_find_decoder(ist->st->codec->codec_id);
2363             if (!codec) {
2364                 snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
2365                         ist->st->codec->codec_id, ist->file_index, ist->st->index);
2366                 ret = AVERROR(EINVAL);
2367                 goto dump_format;
2368             }
2369
2370             /* update requested sample format for the decoder based on the
2371                corresponding encoder sample format */
2372             for (j = 0; j < nb_ostreams; j++) {
2373                 ost = ost_table[j];
2374                 if (ost->source_index == i) {
2375                     update_sample_fmt(ist->st->codec, codec, ost->st->codec);
2376                     break;
2377                 }
2378             }
2379
2380             if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2381                 snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
2382                         ist->file_index, ist->st->index);
2383                 ret = AVERROR(EINVAL);
2384                 goto dump_format;
2385             }
2386             assert_codec_experimental(ist->st->codec, 0);
2387             assert_avoptions(ost->opts);
2388             //if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2389             //    ist->st->codec->flags |= CODEC_FLAG_REPEAT_FIELD;
2390         }
2391     }
2392
2393     /* init pts */
2394     for (i = 0; i < nb_input_streams; i++) {
2395         AVStream *st;
2396         ist = &input_streams[i];
2397         st= ist->st;
2398         ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
2399         ist->next_pts = AV_NOPTS_VALUE;
2400         init_pts_correction(&ist->pts_ctx);
2401         ist->is_start = 1;
2402     }
2403
2404     /* set meta data information from input file if required */
2405     for (i=0;i<nb_meta_data_maps;i++) {
2406         AVFormatContext *files[2];
2407         AVDictionary    **meta[2];
2408         int j;
2409
2410 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
2411         if ((index) < 0 || (index) >= (nb_elems)) {\
2412             snprintf(error, sizeof(error), "Invalid %s index %d while processing metadata maps\n",\
2413                      (desc), (index));\
2414             ret = AVERROR(EINVAL);\
2415             goto dump_format;\
2416         }
2417
2418         int out_file_index = meta_data_maps[i][0].file;
2419         int in_file_index = meta_data_maps[i][1].file;
2420         if (in_file_index < 0 || out_file_index < 0)
2421             continue;
2422         METADATA_CHECK_INDEX(out_file_index, nb_output_files, "output file")
2423         METADATA_CHECK_INDEX(in_file_index, nb_input_files, "input file")
2424
2425         files[0] = output_files[out_file_index];
2426         files[1] = input_files[in_file_index].ctx;
2427
2428         for (j = 0; j < 2; j++) {
2429             MetadataMap *map = &meta_data_maps[i][j];
2430
2431             switch (map->type) {
2432             case 'g':
2433                 meta[j] = &files[j]->metadata;
2434                 break;
2435             case 's':
2436                 METADATA_CHECK_INDEX(map->index, files[j]->nb_streams, "stream")
2437                 meta[j] = &files[j]->streams[map->index]->metadata;
2438                 break;
2439             case 'c':
2440                 METADATA_CHECK_INDEX(map->index, files[j]->nb_chapters, "chapter")
2441                 meta[j] = &files[j]->chapters[map->index]->metadata;
2442                 break;
2443             case 'p':
2444                 METADATA_CHECK_INDEX(map->index, files[j]->nb_programs, "program")
2445                 meta[j] = &files[j]->programs[map->index]->metadata;
2446                 break;
2447             }
2448         }
2449
2450         av_dict_copy(meta[0], *meta[1], AV_DICT_DONT_OVERWRITE);
2451     }
2452
2453     /* copy global metadata by default */
2454     if (metadata_global_autocopy) {
2455
2456         for (i = 0; i < nb_output_files; i++)
2457             av_dict_copy(&output_files[i]->metadata, input_files[0].ctx->metadata,
2458                          AV_DICT_DONT_OVERWRITE);
2459     }
2460
2461     /* open files and write file headers */
2462     for(i=0;i<nb_output_files;i++) {
2463         os = output_files[i];
2464         if (avformat_write_header(os, &output_opts[i]) < 0) {
2465             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2466             ret = AVERROR(EINVAL);
2467             goto dump_format;
2468         }
2469         assert_avoptions(output_opts[i]);
2470         if (strcmp(output_files[i]->oformat->name, "rtp")) {
2471             want_sdp = 0;
2472         }
2473     }
2474
2475  dump_format:
2476     /* dump the file output parameters - cannot be done before in case
2477        of stream copy */
2478     for(i=0;i<nb_output_files;i++) {
2479         av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2480     }
2481
2482     /* dump the stream mapping */
2483     if (verbose >= 0) {
2484         fprintf(stderr, "Stream mapping:\n");
2485         for(i=0;i<nb_ostreams;i++) {
2486             ost = ost_table[i];
2487             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2488                     input_streams[ost->source_index].file_index,
2489                     input_streams[ost->source_index].st->index,
2490                     ost->file_index,
2491                     ost->index);
2492             if (ost->sync_ist != &input_streams[ost->source_index])
2493                 fprintf(stderr, " [sync #%d.%d]",
2494                         ost->sync_ist->file_index,
2495                         ost->sync_ist->st->index);
2496             fprintf(stderr, "\n");
2497         }
2498     }
2499
2500     if (ret) {
2501         fprintf(stderr, "%s\n", error);
2502         goto fail;
2503     }
2504
2505     if (want_sdp) {
2506         print_sdp(output_files, nb_output_files);
2507     }
2508
2509     if (verbose >= 0)
2510         fprintf(stderr, "Press ctrl-c to stop encoding\n");
2511     term_init();
2512
2513     timer_start = av_gettime();
2514
2515     for(; received_sigterm == 0;) {
2516         int file_index, ist_index;
2517         AVPacket pkt;
2518         double ipts_min;
2519         double opts_min;
2520
2521     redo:
2522         ipts_min= 1e100;
2523         opts_min= 1e100;
2524
2525         /* select the stream that we must read now by looking at the
2526            smallest output pts */
2527         file_index = -1;
2528         for(i=0;i<nb_ostreams;i++) {
2529             double ipts, opts;
2530             ost = ost_table[i];
2531             os = output_files[ost->file_index];
2532             ist = &input_streams[ost->source_index];
2533             if(ist->is_past_recording_time || no_packet[ist->file_index])
2534                 continue;
2535                 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2536             ipts = (double)ist->pts;
2537             if (!input_files[ist->file_index].eof_reached){
2538                 if(ipts < ipts_min) {
2539                     ipts_min = ipts;
2540                     if(input_sync ) file_index = ist->file_index;
2541                 }
2542                 if(opts < opts_min) {
2543                     opts_min = opts;
2544                     if(!input_sync) file_index = ist->file_index;
2545                 }
2546             }
2547             if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
2548                 file_index= -1;
2549                 break;
2550             }
2551         }
2552         /* if none, if is finished */
2553         if (file_index < 0) {
2554             if(no_packet_count){
2555                 no_packet_count=0;
2556                 memset(no_packet, 0, sizeof(no_packet));
2557                 usleep(10000);
2558                 continue;
2559             }
2560             break;
2561         }
2562
2563         /* finish if limit size exhausted */
2564         if (limit_filesize != 0 && limit_filesize <= avio_tell(output_files[0]->pb))
2565             break;
2566
2567         /* read a frame from it and output it in the fifo */
2568         is = input_files[file_index].ctx;
2569         ret= av_read_frame(is, &pkt);
2570         if(ret == AVERROR(EAGAIN)){
2571             no_packet[file_index]=1;
2572             no_packet_count++;
2573             continue;
2574         }
2575         if (ret < 0) {
2576             input_files[file_index].eof_reached = 1;
2577             if (opt_shortest)
2578                 break;
2579             else
2580                 continue;
2581         }
2582
2583         no_packet_count=0;
2584         memset(no_packet, 0, sizeof(no_packet));
2585
2586         if (do_pkt_dump) {
2587             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2588                              is->streams[pkt.stream_index]);
2589         }
2590         /* the following test is needed in case new streams appear
2591            dynamically in stream : we ignore them */
2592         if (pkt.stream_index >= input_files[file_index].ctx->nb_streams)
2593             goto discard_packet;
2594         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2595         ist = &input_streams[ist_index];
2596         if (ist->discard)
2597             goto discard_packet;
2598
2599         if (pkt.dts != AV_NOPTS_VALUE)
2600             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2601         if (pkt.pts != AV_NOPTS_VALUE)
2602             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2603
2604         if (ist->ts_scale) {
2605             if(pkt.pts != AV_NOPTS_VALUE)
2606                 pkt.pts *= ist->ts_scale;
2607             if(pkt.dts != AV_NOPTS_VALUE)
2608                 pkt.dts *= ist->ts_scale;
2609         }
2610
2611 //        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);
2612         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2613             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2614             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2615             int64_t delta= pkt_dts - ist->next_pts;
2616             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2617                 input_files[ist->file_index].ts_offset -= delta;
2618                 if (verbose > 2)
2619                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2620                             delta, input_files[ist->file_index].ts_offset);
2621                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2622                 if(pkt.pts != AV_NOPTS_VALUE)
2623                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2624             }
2625         }
2626
2627         /* finish if recording time exhausted */
2628         if (recording_time != INT64_MAX &&
2629             av_compare_ts(pkt.pts, ist->st->time_base, recording_time + start_time, (AVRational){1, 1000000}) >= 0) {
2630             ist->is_past_recording_time = 1;
2631             goto discard_packet;
2632         }
2633
2634         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2635         if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
2636
2637             if (verbose >= 0)
2638                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2639                         ist->file_index, ist->st->index);
2640             if (exit_on_error)
2641                 exit_program(1);
2642             av_free_packet(&pkt);
2643             goto redo;
2644         }
2645
2646     discard_packet:
2647         av_free_packet(&pkt);
2648
2649         /* dump report by using the output first video and audio streams */
2650         print_report(output_files, ost_table, nb_ostreams, 0);
2651     }
2652
2653     /* at the end of stream, we must flush the decoder buffers */
2654     for (i = 0; i < nb_input_streams; i++) {
2655         ist = &input_streams[i];
2656         if (ist->decoding_needed) {
2657             output_packet(ist, i, ost_table, nb_ostreams, NULL);
2658         }
2659     }
2660
2661     term_exit();
2662
2663     /* write the trailer if needed and close file */
2664     for(i=0;i<nb_output_files;i++) {
2665         os = output_files[i];
2666         av_write_trailer(os);
2667     }
2668
2669     /* dump report by using the first video and audio streams */
2670     print_report(output_files, ost_table, nb_ostreams, 1);
2671
2672     /* close each encoder */
2673     for(i=0;i<nb_ostreams;i++) {
2674         ost = ost_table[i];
2675         if (ost->encoding_needed) {
2676             av_freep(&ost->st->codec->stats_in);
2677             avcodec_close(ost->st->codec);
2678         }
2679 #if CONFIG_AVFILTER
2680         avfilter_graph_free(&ost->graph);
2681 #endif
2682     }
2683
2684     /* close each decoder */
2685     for (i = 0; i < nb_input_streams; i++) {
2686         ist = &input_streams[i];
2687         if (ist->decoding_needed) {
2688             avcodec_close(ist->st->codec);
2689         }
2690     }
2691
2692     /* finished ! */
2693     ret = 0;
2694
2695  fail:
2696     av_freep(&bit_buffer);
2697
2698     if (ost_table) {
2699         for(i=0;i<nb_ostreams;i++) {
2700             ost = ost_table[i];
2701             if (ost) {
2702                 if (ost->st->stream_copy)
2703                     av_freep(&ost->st->codec->extradata);
2704                 if (ost->logfile) {
2705                     fclose(ost->logfile);
2706                     ost->logfile = NULL;
2707                 }
2708                 av_fifo_free(ost->fifo); /* works even if fifo is not
2709                                              initialized but set to zero */
2710                 av_freep(&ost->st->codec->subtitle_header);
2711                 av_free(ost->pict_tmp.data[0]);
2712                 av_free(ost->forced_kf_pts);
2713                 if (ost->video_resample)
2714                     sws_freeContext(ost->img_resample_ctx);
2715                 if (ost->resample)
2716                     audio_resample_close(ost->resample);
2717                 if (ost->reformat_ctx)
2718                     av_audio_convert_free(ost->reformat_ctx);
2719                 av_dict_free(&ost->opts);
2720                 av_free(ost);
2721             }
2722         }
2723         av_free(ost_table);
2724     }
2725     return ret;
2726 }
2727
2728 static int opt_format(const char *opt, const char *arg)
2729 {
2730     last_asked_format = arg;
2731     return 0;
2732 }
2733
2734 static int opt_video_rc_override_string(const char *opt, const char *arg)
2735 {
2736     video_rc_override_string = arg;
2737     return 0;
2738 }
2739
2740 static int opt_me_threshold(const char *opt, const char *arg)
2741 {
2742     me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2743     return 0;
2744 }
2745
2746 static int opt_verbose(const char *opt, const char *arg)
2747 {
2748     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2749     return 0;
2750 }
2751
2752 static int opt_frame_rate(const char *opt, const char *arg)
2753 {
2754     if (av_parse_video_rate(&frame_rate, arg) < 0) {
2755         fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2756         exit_program(1);
2757     }
2758     return 0;
2759 }
2760
2761 static int opt_frame_crop(const char *opt, const char *arg)
2762 {
2763     fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
2764     return AVERROR(EINVAL);
2765 }
2766
2767 static int opt_frame_size(const char *opt, const char *arg)
2768 {
2769     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2770         fprintf(stderr, "Incorrect frame size\n");
2771         return AVERROR(EINVAL);
2772     }
2773     return 0;
2774 }
2775
2776 static int opt_pad(const char *opt, const char *arg) {
2777     fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2778     return -1;
2779 }
2780
2781 static int opt_frame_pix_fmt(const char *opt, const char *arg)
2782 {
2783     if (strcmp(arg, "list")) {
2784         frame_pix_fmt = av_get_pix_fmt(arg);
2785         if (frame_pix_fmt == PIX_FMT_NONE) {
2786             fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2787             return AVERROR(EINVAL);
2788         }
2789     } else {
2790         show_pix_fmts();
2791         exit_program(0);
2792     }
2793     return 0;
2794 }
2795
2796 static int opt_frame_aspect_ratio(const char *opt, const char *arg)
2797 {
2798     int x = 0, y = 0;
2799     double ar = 0;
2800     const char *p;
2801     char *end;
2802
2803     p = strchr(arg, ':');
2804     if (p) {
2805         x = strtol(arg, &end, 10);
2806         if (end == p)
2807             y = strtol(end+1, &end, 10);
2808         if (x > 0 && y > 0)
2809             ar = (double)x / (double)y;
2810     } else
2811         ar = strtod(arg, NULL);
2812
2813     if (!ar) {
2814         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2815         return AVERROR(EINVAL);
2816     }
2817     frame_aspect_ratio = ar;
2818     return 0;
2819 }
2820
2821 static int opt_metadata(const char *opt, const char *arg)
2822 {
2823     char *mid= strchr(arg, '=');
2824
2825     if(!mid){
2826         fprintf(stderr, "Missing =\n");
2827         exit_program(1);
2828     }
2829     *mid++= 0;
2830
2831     av_dict_set(&metadata, arg, mid, 0);
2832
2833     return 0;
2834 }
2835
2836 static int opt_qscale(const char *opt, const char *arg)
2837 {
2838     video_qscale = parse_number_or_die(opt, arg, OPT_FLOAT, 0, 255);
2839     if (video_qscale == 0) {
2840         fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2841         return AVERROR(EINVAL);
2842     }
2843     return 0;
2844 }
2845
2846 static int opt_top_field_first(const char *opt, const char *arg)
2847 {
2848     top_field_first = parse_number_or_die(opt, arg, OPT_INT, 0, 1);
2849     return 0;
2850 }
2851
2852 static int opt_thread_count(const char *opt, const char *arg)
2853 {
2854     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2855 #if !HAVE_THREADS
2856     if (verbose >= 0)
2857         fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2858 #endif
2859     return 0;
2860 }
2861
2862 static int opt_audio_sample_fmt(const char *opt, const char *arg)
2863 {
2864     if (strcmp(arg, "list")) {
2865         audio_sample_fmt = av_get_sample_fmt(arg);
2866         if (audio_sample_fmt == AV_SAMPLE_FMT_NONE) {
2867             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg);
2868             return AVERROR(EINVAL);
2869         }
2870     } else {
2871         int i;
2872         char fmt_str[128];
2873         for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
2874             printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
2875         exit_program(0);
2876     }
2877     return 0;
2878 }
2879
2880 static int opt_audio_rate(const char *opt, const char *arg)
2881 {
2882     audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2883     return 0;
2884 }
2885
2886 static int opt_audio_channels(const char *opt, const char *arg)
2887 {
2888     audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2889     return 0;
2890 }
2891
2892 static int opt_video_channel(const char *opt, const char *arg)
2893 {
2894     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
2895     opt_default("channel", arg);
2896     return 0;
2897 }
2898
2899 static int opt_video_standard(const char *opt, const char *arg)
2900 {
2901     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
2902     opt_default("standard", arg);
2903     return 0;
2904 }
2905
2906 static int opt_codec(int *pstream_copy, char **pcodec_name,
2907                       int codec_type, const char *arg)
2908 {
2909     av_freep(pcodec_name);
2910     if (!strcmp(arg, "copy")) {
2911         *pstream_copy = 1;
2912     } else {
2913         *pcodec_name = av_strdup(arg);
2914     }
2915     return 0;
2916 }
2917
2918 static int opt_audio_codec(const char *opt, const char *arg)
2919 {
2920     return opt_codec(&audio_stream_copy, &audio_codec_name, AVMEDIA_TYPE_AUDIO, arg);
2921 }
2922
2923 static int opt_video_codec(const char *opt, const char *arg)
2924 {
2925     return opt_codec(&video_stream_copy, &video_codec_name, AVMEDIA_TYPE_VIDEO, arg);
2926 }
2927
2928 static int opt_subtitle_codec(const char *opt, const char *arg)
2929 {
2930     return opt_codec(&subtitle_stream_copy, &subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, arg);
2931 }
2932
2933 static int opt_data_codec(const char *opt, const char *arg)
2934 {
2935     return opt_codec(&data_stream_copy, &data_codec_name, AVMEDIA_TYPE_DATA, arg);
2936 }
2937
2938 static int opt_codec_tag(const char *opt, const char *arg)
2939 {
2940     char *tail;
2941     uint32_t *codec_tag;
2942
2943     codec_tag = !strcmp(opt, "atag") ? &audio_codec_tag :
2944                 !strcmp(opt, "vtag") ? &video_codec_tag :
2945                 !strcmp(opt, "stag") ? &subtitle_codec_tag : NULL;
2946     if (!codec_tag)
2947         return -1;
2948
2949     *codec_tag = strtol(arg, &tail, 0);
2950     if (!tail || *tail)
2951         *codec_tag = AV_RL32(arg);
2952
2953     return 0;
2954 }
2955
2956 static int opt_map(const char *opt, const char *arg)
2957 {
2958     StreamMap *m;
2959     char *p;
2960
2961     stream_maps = grow_array(stream_maps, sizeof(*stream_maps), &nb_stream_maps, nb_stream_maps + 1);
2962     m = &stream_maps[nb_stream_maps-1];
2963
2964     m->file_index = strtol(arg, &p, 0);
2965     if (*p)
2966         p++;
2967
2968     m->stream_index = strtol(p, &p, 0);
2969     if (*p) {
2970         p++;
2971         m->sync_file_index = strtol(p, &p, 0);
2972         if (*p)
2973             p++;
2974         m->sync_stream_index = strtol(p, &p, 0);
2975     } else {
2976         m->sync_file_index = m->file_index;
2977         m->sync_stream_index = m->stream_index;
2978     }
2979     return 0;
2980 }
2981
2982 static void parse_meta_type(char *arg, char *type, int *index, char **endptr)
2983 {
2984     *endptr = arg;
2985     if (*arg == ',') {
2986         *type = *(++arg);
2987         switch (*arg) {
2988         case 'g':
2989             break;
2990         case 's':
2991         case 'c':
2992         case 'p':
2993             *index = strtol(++arg, endptr, 0);
2994             break;
2995         default:
2996             fprintf(stderr, "Invalid metadata type %c.\n", *arg);
2997             exit_program(1);
2998         }
2999     } else
3000         *type = 'g';
3001 }
3002
3003 static int opt_map_metadata(const char *opt, const char *arg)
3004 {
3005     MetadataMap *m, *m1;
3006     char *p;
3007
3008     meta_data_maps = grow_array(meta_data_maps, sizeof(*meta_data_maps),
3009                                 &nb_meta_data_maps, nb_meta_data_maps + 1);
3010
3011     m = &meta_data_maps[nb_meta_data_maps - 1][0];
3012     m->file = strtol(arg, &p, 0);
3013     parse_meta_type(p, &m->type, &m->index, &p);
3014     if (*p)
3015         p++;
3016
3017     m1 = &meta_data_maps[nb_meta_data_maps - 1][1];
3018     m1->file = strtol(p, &p, 0);
3019     parse_meta_type(p, &m1->type, &m1->index, &p);
3020
3021     if (m->type == 'g' || m1->type == 'g')
3022         metadata_global_autocopy = 0;
3023     if (m->type == 's' || m1->type == 's')
3024         metadata_streams_autocopy = 0;
3025     if (m->type == 'c' || m1->type == 'c')
3026         metadata_chapters_autocopy = 0;
3027
3028     return 0;
3029 }
3030
3031 static int opt_map_meta_data(const char *opt, const char *arg)
3032 {
3033     fprintf(stderr, "-map_meta_data is deprecated and will be removed soon. "
3034                     "Use -map_metadata instead.\n");
3035     return opt_map_metadata(opt, arg);
3036 }
3037
3038 static int opt_input_ts_scale(const char *opt, const char *arg)
3039 {
3040     unsigned int stream;
3041     double scale;
3042     char *p;
3043
3044     stream = strtol(arg, &p, 0);
3045     if (*p)
3046         p++;
3047     scale= strtod(p, &p);
3048
3049     ts_scale = grow_array(ts_scale, sizeof(*ts_scale), &nb_ts_scale, stream + 1);
3050     ts_scale[stream] = scale;
3051     return 0;
3052 }
3053
3054 static int opt_recording_time(const char *opt, const char *arg)
3055 {
3056     recording_time = parse_time_or_die(opt, arg, 1);
3057     return 0;
3058 }
3059
3060 static int opt_start_time(const char *opt, const char *arg)
3061 {
3062     start_time = parse_time_or_die(opt, arg, 1);
3063     return 0;
3064 }
3065
3066 static int opt_recording_timestamp(const char *opt, const char *arg)
3067 {
3068     char buf[128];
3069     int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
3070     struct tm time = *gmtime((time_t*)&recording_timestamp);
3071     strftime(buf, sizeof(buf), "creation_time=%FT%T%z", &time);
3072     opt_metadata("metadata", buf);
3073
3074     av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
3075                                  "tag instead.\n", opt);
3076     return 0;
3077 }
3078
3079 static int opt_input_ts_offset(const char *opt, const char *arg)
3080 {
3081     input_ts_offset = parse_time_or_die(opt, arg, 1);
3082     return 0;
3083 }
3084
3085 static enum CodecID find_codec_or_die(const char *name, int type, int encoder)
3086 {
3087     const char *codec_string = encoder ? "encoder" : "decoder";
3088     AVCodec *codec;
3089
3090     if(!name)
3091         return CODEC_ID_NONE;
3092     codec = encoder ?
3093         avcodec_find_encoder_by_name(name) :
3094         avcodec_find_decoder_by_name(name);
3095     if(!codec) {
3096         fprintf(stderr, "Unknown %s '%s'\n", codec_string, name);
3097         exit_program(1);
3098     }
3099     if(codec->type != type) {
3100         fprintf(stderr, "Invalid %s type '%s'\n", codec_string, name);
3101         exit_program(1);
3102     }
3103     return codec->id;
3104 }
3105
3106 static int opt_input_file(const char *opt, const char *filename)
3107 {
3108     AVFormatContext *ic;
3109     AVInputFormat *file_iformat = NULL;
3110     int err, i, ret, rfps, rfps_base;
3111     int64_t timestamp;
3112     uint8_t buf[128];
3113     AVDictionary **opts;
3114     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
3115
3116     if (last_asked_format) {
3117         if (!(file_iformat = av_find_input_format(last_asked_format))) {
3118             fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
3119             exit_program(1);
3120         }
3121         last_asked_format = NULL;
3122     }
3123
3124     if (!strcmp(filename, "-"))
3125         filename = "pipe:";
3126
3127     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3128                     !strcmp(filename, "/dev/stdin");
3129
3130     /* get default parameters from command line */
3131     ic = avformat_alloc_context();
3132     if (!ic) {
3133         print_error(filename, AVERROR(ENOMEM));
3134         exit_program(1);
3135     }
3136     if (audio_sample_rate) {
3137         snprintf(buf, sizeof(buf), "%d", audio_sample_rate);
3138         av_dict_set(&format_opts, "sample_rate", buf, 0);
3139     }
3140     if (audio_channels) {
3141         snprintf(buf, sizeof(buf), "%d", audio_channels);
3142         av_dict_set(&format_opts, "channels", buf, 0);
3143     }
3144     if (frame_rate.num) {
3145         snprintf(buf, sizeof(buf), "%d/%d", frame_rate.num, frame_rate.den);
3146         av_dict_set(&format_opts, "framerate", buf, 0);
3147     }
3148     if (frame_width && frame_height) {
3149         snprintf(buf, sizeof(buf), "%dx%d", frame_width, frame_height);
3150         av_dict_set(&format_opts, "video_size", buf, 0);
3151     }
3152     if (frame_pix_fmt != PIX_FMT_NONE)
3153         av_dict_set(&format_opts, "pixel_format", av_get_pix_fmt_name(frame_pix_fmt), 0);
3154
3155     ic->video_codec_id   =
3156         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0);
3157     ic->audio_codec_id   =
3158         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0);
3159     ic->subtitle_codec_id=
3160         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0);
3161     ic->flags |= AVFMT_FLAG_NONBLOCK;
3162
3163     /* open the input file with generic libav function */
3164     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3165     if (err < 0) {
3166         print_error(filename, err);
3167         exit_program(1);
3168     }
3169     assert_avoptions(format_opts);
3170
3171     if(opt_programid) {
3172         int i, j;
3173         int found=0;
3174         for(i=0; i<ic->nb_streams; i++){
3175             ic->streams[i]->discard= AVDISCARD_ALL;
3176         }
3177         for(i=0; i<ic->nb_programs; i++){
3178             AVProgram *p= ic->programs[i];
3179             if(p->id != opt_programid){
3180                 p->discard = AVDISCARD_ALL;
3181             }else{
3182                 found=1;
3183                 for(j=0; j<p->nb_stream_indexes; j++){
3184                     ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
3185                 }
3186             }
3187         }
3188         if(!found){
3189             fprintf(stderr, "Specified program id not found\n");
3190             exit_program(1);
3191         }
3192         opt_programid=0;
3193     }
3194
3195     if (loop_input) {
3196         av_log(NULL, AV_LOG_WARNING, "-loop_input is deprecated, use -loop 1\n");
3197         ic->loop_input = loop_input;
3198     }
3199
3200     /* Set AVCodecContext options for avformat_find_stream_info */
3201     opts = setup_find_stream_info_opts(ic, codec_opts);
3202     orig_nb_streams = ic->nb_streams;
3203
3204     /* If not enough info to get the stream parameters, we decode the
3205        first frames to get it. (used in mpeg case for example) */
3206     ret = avformat_find_stream_info(ic, opts);
3207     if (ret < 0 && verbose >= 0) {
3208         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3209         av_close_input_file(ic);
3210         exit_program(1);
3211     }
3212
3213     timestamp = start_time;
3214     /* add the stream start time */
3215     if (ic->start_time != AV_NOPTS_VALUE)
3216         timestamp += ic->start_time;
3217
3218     /* if seeking requested, we execute it */
3219     if (start_time != 0) {
3220         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3221         if (ret < 0) {
3222             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3223                     filename, (double)timestamp / AV_TIME_BASE);
3224         }
3225         /* reset seek info */
3226         start_time = 0;
3227     }
3228
3229     /* update the current parameters so that they match the one of the input stream */
3230     for(i=0;i<ic->nb_streams;i++) {
3231         AVStream *st = ic->streams[i];
3232         AVCodecContext *dec = st->codec;
3233         InputStream *ist;
3234
3235         dec->thread_count = thread_count;
3236
3237         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3238         ist = &input_streams[nb_input_streams - 1];
3239         ist->st = st;
3240         ist->file_index = nb_input_files;
3241         ist->discard = 1;
3242         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, 0);
3243
3244         if (i < nb_ts_scale)
3245             ist->ts_scale = ts_scale[i];
3246
3247         switch (dec->codec_type) {
3248         case AVMEDIA_TYPE_AUDIO:
3249             ist->dec = avcodec_find_decoder_by_name(audio_codec_name);
3250             if(audio_disable)
3251                 st->discard= AVDISCARD_ALL;
3252             break;
3253         case AVMEDIA_TYPE_VIDEO:
3254             ist->dec = avcodec_find_decoder_by_name(video_codec_name);
3255             rfps      = ic->streams[i]->r_frame_rate.num;
3256             rfps_base = ic->streams[i]->r_frame_rate.den;
3257             if (dec->lowres) {
3258                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3259                 dec->height >>= dec->lowres;
3260                 dec->width  >>= dec->lowres;
3261             }
3262             if(me_threshold)
3263                 dec->debug |= FF_DEBUG_MV;
3264
3265             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3266
3267                 if (verbose >= 0)
3268                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3269                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3270
3271                     (float)rfps / rfps_base, rfps, rfps_base);
3272             }
3273
3274             if(video_disable)
3275                 st->discard= AVDISCARD_ALL;
3276             else if(video_discard)
3277                 st->discard= video_discard;
3278             break;
3279         case AVMEDIA_TYPE_DATA:
3280             break;
3281         case AVMEDIA_TYPE_SUBTITLE:
3282             ist->dec = avcodec_find_decoder_by_name(subtitle_codec_name);
3283             if(subtitle_disable)
3284                 st->discard = AVDISCARD_ALL;
3285             break;
3286         case AVMEDIA_TYPE_ATTACHMENT:
3287         case AVMEDIA_TYPE_UNKNOWN:
3288             break;
3289         default:
3290             abort();
3291         }
3292     }
3293
3294     /* dump the file content */
3295     if (verbose >= 0)
3296         av_dump_format(ic, nb_input_files, filename, 0);
3297
3298     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3299     input_files[nb_input_files - 1].ctx        = ic;
3300     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3301     input_files[nb_input_files - 1].ts_offset  = input_ts_offset - (copy_ts ? 0 : timestamp);
3302
3303     frame_rate    = (AVRational){0, 0};
3304     frame_pix_fmt = PIX_FMT_NONE;
3305     frame_height = 0;
3306     frame_width  = 0;
3307     audio_sample_rate = 0;
3308     audio_channels    = 0;
3309     audio_sample_fmt  = AV_SAMPLE_FMT_NONE;
3310     av_freep(&ts_scale);
3311     nb_ts_scale = 0;
3312
3313     for (i = 0; i < orig_nb_streams; i++)
3314         av_dict_free(&opts[i]);
3315     av_freep(&opts);
3316     av_freep(&video_codec_name);
3317     av_freep(&audio_codec_name);
3318     av_freep(&subtitle_codec_name);
3319     uninit_opts();
3320     init_opts();
3321     return 0;
3322 }
3323
3324 static void check_inputs(int *has_video_ptr,
3325                          int *has_audio_ptr,
3326                          int *has_subtitle_ptr,
3327                          int *has_data_ptr)
3328 {
3329     int has_video, has_audio, has_subtitle, has_data, i, j;
3330     AVFormatContext *ic;
3331
3332     has_video = 0;
3333     has_audio = 0;
3334     has_subtitle = 0;
3335     has_data = 0;
3336
3337     for(j=0;j<nb_input_files;j++) {
3338         ic = input_files[j].ctx;
3339         for(i=0;i<ic->nb_streams;i++) {
3340             AVCodecContext *enc = ic->streams[i]->codec;
3341             switch(enc->codec_type) {
3342             case AVMEDIA_TYPE_AUDIO:
3343                 has_audio = 1;
3344                 break;
3345             case AVMEDIA_TYPE_VIDEO:
3346                 has_video = 1;
3347                 break;
3348             case AVMEDIA_TYPE_SUBTITLE:
3349                 has_subtitle = 1;
3350                 break;
3351             case AVMEDIA_TYPE_DATA:
3352             case AVMEDIA_TYPE_ATTACHMENT:
3353             case AVMEDIA_TYPE_UNKNOWN:
3354                 has_data = 1;
3355                 break;
3356             default:
3357                 abort();
3358             }
3359         }
3360     }
3361     *has_video_ptr = has_video;
3362     *has_audio_ptr = has_audio;
3363     *has_subtitle_ptr = has_subtitle;
3364     *has_data_ptr = has_data;
3365 }
3366
3367 static void new_video_stream(AVFormatContext *oc, int file_idx)
3368 {
3369     AVStream *st;
3370     OutputStream *ost;
3371     AVCodecContext *video_enc;
3372     enum CodecID codec_id = CODEC_ID_NONE;
3373     AVCodec *codec= NULL;
3374
3375     if(!video_stream_copy){
3376         if (video_codec_name) {
3377             codec_id = find_codec_or_die(video_codec_name, AVMEDIA_TYPE_VIDEO, 1);
3378             codec = avcodec_find_encoder_by_name(video_codec_name);
3379         } else {
3380             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_VIDEO);
3381             codec = avcodec_find_encoder(codec_id);
3382         }
3383     }
3384
3385     ost = new_output_stream(oc, file_idx, codec);
3386     st  = ost->st;
3387     if (!video_stream_copy) {
3388         ost->frame_aspect_ratio = frame_aspect_ratio;
3389         frame_aspect_ratio = 0;
3390 #if CONFIG_AVFILTER
3391         ost->avfilter= vfilters;
3392         vfilters = NULL;
3393 #endif
3394     }
3395
3396     ost->bitstream_filters = video_bitstream_filters;
3397     video_bitstream_filters= NULL;
3398
3399     st->codec->thread_count= thread_count;
3400
3401     video_enc = st->codec;
3402
3403     if(video_codec_tag)
3404         video_enc->codec_tag= video_codec_tag;
3405
3406     if(oc->oformat->flags & AVFMT_GLOBALHEADER) {
3407         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3408     }
3409
3410     video_enc->codec_type = AVMEDIA_TYPE_VIDEO;
3411     if (video_stream_copy) {
3412         st->stream_copy = 1;
3413         video_enc->sample_aspect_ratio =
3414         st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3415     } else {
3416         const char *p;
3417         int i;
3418
3419         if (frame_rate.num)
3420             ost->frame_rate = frame_rate;
3421         video_enc->codec_id = codec_id;
3422
3423         video_enc->width = frame_width;
3424         video_enc->height = frame_height;
3425         video_enc->pix_fmt = frame_pix_fmt;
3426         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3427
3428         if (intra_only)
3429             video_enc->gop_size = 0;
3430         if (video_qscale || same_quality) {
3431             video_enc->flags |= CODEC_FLAG_QSCALE;
3432             video_enc->global_quality = FF_QP2LAMBDA * video_qscale;
3433         }
3434
3435         if(intra_matrix)
3436             video_enc->intra_matrix = intra_matrix;
3437         if(inter_matrix)
3438             video_enc->inter_matrix = inter_matrix;
3439
3440         p= video_rc_override_string;
3441         for(i=0; p; i++){
3442             int start, end, q;
3443             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3444             if(e!=3){
3445                 fprintf(stderr, "error parsing rc_override\n");
3446                 exit_program(1);
3447             }
3448             video_enc->rc_override=
3449                 av_realloc(video_enc->rc_override,
3450                            sizeof(RcOverride)*(i+1));
3451             video_enc->rc_override[i].start_frame= start;
3452             video_enc->rc_override[i].end_frame  = end;
3453             if(q>0){
3454                 video_enc->rc_override[i].qscale= q;
3455                 video_enc->rc_override[i].quality_factor= 1.0;
3456             }
3457             else{
3458                 video_enc->rc_override[i].qscale= 0;
3459                 video_enc->rc_override[i].quality_factor= -q/100.0;
3460             }
3461             p= strchr(p, '/');
3462             if(p) p++;
3463         }
3464         video_enc->rc_override_count=i;
3465         if (!video_enc->rc_initial_buffer_occupancy)
3466             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3467         video_enc->me_threshold= me_threshold;
3468         video_enc->intra_dc_precision= intra_dc_precision - 8;
3469
3470         if (do_psnr)
3471             video_enc->flags|= CODEC_FLAG_PSNR;
3472
3473         /* two pass mode */
3474         if (do_pass) {
3475             if (do_pass == 1) {
3476                 video_enc->flags |= CODEC_FLAG_PASS1;
3477             } else {
3478                 video_enc->flags |= CODEC_FLAG_PASS2;
3479             }
3480         }
3481
3482         if (forced_key_frames)
3483             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3484     }
3485     if (video_language) {
3486         av_dict_set(&st->metadata, "language", video_language, 0);
3487         av_freep(&video_language);
3488     }
3489
3490     /* reset some key parameters */
3491     video_disable = 0;
3492     av_freep(&video_codec_name);
3493     av_freep(&forced_key_frames);
3494     video_stream_copy = 0;
3495     frame_pix_fmt = PIX_FMT_NONE;
3496 }
3497
3498 static void new_audio_stream(AVFormatContext *oc, int file_idx)
3499 {
3500     AVStream *st;
3501     OutputStream *ost;
3502     AVCodec *codec= NULL;
3503     AVCodecContext *audio_enc;
3504     enum CodecID codec_id = CODEC_ID_NONE;
3505
3506     if(!audio_stream_copy){
3507         if (audio_codec_name) {
3508             codec_id = find_codec_or_die(audio_codec_name, AVMEDIA_TYPE_AUDIO, 1);
3509             codec = avcodec_find_encoder_by_name(audio_codec_name);
3510         } else {
3511             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_AUDIO);
3512             codec = avcodec_find_encoder(codec_id);
3513         }
3514     }
3515     ost = new_output_stream(oc, file_idx, codec);
3516     st  = ost->st;
3517
3518     ost->bitstream_filters = audio_bitstream_filters;
3519     audio_bitstream_filters= NULL;
3520
3521     st->codec->thread_count= thread_count;
3522
3523     audio_enc = st->codec;
3524     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3525
3526     if(audio_codec_tag)
3527         audio_enc->codec_tag= audio_codec_tag;
3528
3529     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3530         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3531     }
3532     if (audio_stream_copy) {
3533         st->stream_copy = 1;
3534     } else {
3535         audio_enc->codec_id = codec_id;
3536
3537         if (audio_qscale > QSCALE_NONE) {
3538             audio_enc->flags |= CODEC_FLAG_QSCALE;
3539             audio_enc->global_quality = FF_QP2LAMBDA * audio_qscale;
3540         }
3541         if (audio_channels)
3542             audio_enc->channels = audio_channels;
3543         if (audio_sample_fmt != AV_SAMPLE_FMT_NONE)
3544             audio_enc->sample_fmt = audio_sample_fmt;
3545         if (audio_sample_rate)
3546             audio_enc->sample_rate = audio_sample_rate;
3547     }
3548     if (audio_language) {
3549         av_dict_set(&st->metadata, "language", audio_language, 0);
3550         av_freep(&audio_language);
3551     }
3552
3553     /* reset some key parameters */
3554     audio_disable = 0;
3555     av_freep(&audio_codec_name);
3556     audio_stream_copy = 0;
3557 }
3558
3559 static void new_data_stream(AVFormatContext *oc, int file_idx)
3560 {
3561     AVStream *st;
3562     OutputStream *ost;
3563     AVCodecContext *data_enc;
3564
3565     ost = new_output_stream(oc, file_idx, NULL);
3566     st  = ost->st;
3567     data_enc = st->codec;
3568     if (!data_stream_copy) {
3569         fprintf(stderr, "Data stream encoding not supported yet (only streamcopy)\n");
3570         exit_program(1);
3571     }
3572
3573     data_enc->codec_type = AVMEDIA_TYPE_DATA;
3574
3575     if (data_codec_tag)
3576         data_enc->codec_tag= data_codec_tag;
3577
3578     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3579         data_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3580     }
3581     if (data_stream_copy) {
3582         st->stream_copy = 1;
3583     }
3584
3585     data_disable = 0;
3586     av_freep(&data_codec_name);
3587     data_stream_copy = 0;
3588 }
3589
3590 static void new_subtitle_stream(AVFormatContext *oc, int file_idx)
3591 {
3592     AVStream *st;
3593     OutputStream *ost;
3594     AVCodec *codec=NULL;
3595     AVCodecContext *subtitle_enc;
3596     enum CodecID codec_id = CODEC_ID_NONE;
3597
3598     if(!subtitle_stream_copy){
3599         if (subtitle_codec_name) {
3600             codec_id = find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 1);
3601             codec = avcodec_find_encoder_by_name(subtitle_codec_name);
3602         } else {
3603             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_SUBTITLE);
3604             codec = avcodec_find_encoder(codec_id);
3605         }
3606     }
3607     ost = new_output_stream(oc, file_idx, codec);
3608     st  = ost->st;
3609     subtitle_enc = st->codec;
3610
3611     ost->bitstream_filters = subtitle_bitstream_filters;
3612     subtitle_bitstream_filters= NULL;
3613
3614     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3615
3616     if(subtitle_codec_tag)
3617         subtitle_enc->codec_tag= subtitle_codec_tag;
3618
3619     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3620         subtitle_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3621     }
3622     if (subtitle_stream_copy) {
3623         st->stream_copy = 1;
3624     } else {
3625         subtitle_enc->codec_id = codec_id;
3626     }
3627
3628     if (subtitle_language) {
3629         av_dict_set(&st->metadata, "language", subtitle_language, 0);
3630         av_freep(&subtitle_language);
3631     }
3632
3633     subtitle_disable = 0;
3634     av_freep(&subtitle_codec_name);
3635     subtitle_stream_copy = 0;
3636 }
3637
3638 static int opt_new_stream(const char *opt, const char *arg)
3639 {
3640     AVFormatContext *oc;
3641     int file_idx = nb_output_files - 1;
3642     if (nb_output_files <= 0) {
3643         fprintf(stderr, "At least one output file must be specified\n");
3644         exit_program(1);
3645     }
3646     oc = output_files[file_idx];
3647
3648     if      (!strcmp(opt, "newvideo"   )) new_video_stream   (oc, file_idx);
3649     else if (!strcmp(opt, "newaudio"   )) new_audio_stream   (oc, file_idx);
3650     else if (!strcmp(opt, "newsubtitle")) new_subtitle_stream(oc, file_idx);
3651     else if (!strcmp(opt, "newdata"    )) new_data_stream    (oc, fil