avconv: make -map_metadata work consistently with the other options
[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 qp_hist = 0;
147 #if CONFIG_AVFILTER
148 static char *vfilters = NULL;
149 #endif
150
151 static int intra_only = 0;
152 static int audio_sample_rate = 0;
153 #define QSCALE_NONE -99999
154 static float audio_qscale = QSCALE_NONE;
155 static int audio_disable = 0;
156 static int audio_channels = 0;
157 static char  *audio_codec_name = NULL;
158 static unsigned int audio_codec_tag = 0;
159 static char *audio_language = NULL;
160
161 static int subtitle_disable = 0;
162 static char *subtitle_codec_name = NULL;
163 static char *subtitle_language = NULL;
164 static unsigned int subtitle_codec_tag = 0;
165
166 static int data_disable = 0;
167 static char *data_codec_name = NULL;
168 static unsigned int data_codec_tag = 0;
169
170 static float mux_preload= 0.5;
171 static float mux_max_delay= 0.7;
172
173 static int64_t recording_time = INT64_MAX;
174 static int64_t start_time = 0;
175 static int64_t input_ts_offset = 0;
176 static int file_overwrite = 0;
177 static AVDictionary *metadata;
178 static int do_benchmark = 0;
179 static int do_hex_dump = 0;
180 static int do_pkt_dump = 0;
181 static int do_psnr = 0;
182 static int do_pass = 0;
183 static char *pass_logfilename_prefix = NULL;
184 static int audio_stream_copy = 0;
185 static int video_stream_copy = 0;
186 static int subtitle_stream_copy = 0;
187 static int data_stream_copy = 0;
188 static int video_sync_method= -1;
189 static int audio_sync_method= 0;
190 static float audio_drift_threshold= 0.1;
191 static int copy_ts= 0;
192 static int copy_tb;
193 static int opt_shortest = 0;
194 static char *vstats_filename;
195 static FILE *vstats_file;
196 static int opt_programid = 0;
197 static int copy_initial_nonkeyframes = 0;
198
199 static int rate_emu = 0;
200
201 static int audio_volume = 256;
202
203 static int exit_on_error = 0;
204 static int using_stdin = 0;
205 static int verbose = 1;
206 static int thread_count= 1;
207 static int64_t video_size = 0;
208 static int64_t audio_size = 0;
209 static int64_t extra_size = 0;
210 static int nb_frames_dup = 0;
211 static int nb_frames_drop = 0;
212 static int input_sync;
213 static uint64_t limit_filesize = 0;
214 static int force_fps = 0;
215 static char *forced_key_frames = NULL;
216
217 static float dts_delta_threshold = 10;
218
219 static int64_t timer_start;
220
221 static uint8_t *audio_buf;
222 static uint8_t *audio_out;
223 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
224
225 static short *samples;
226
227 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
228 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
229 static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL;
230
231 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
232
233 struct InputStream;
234
235 typedef struct OutputStream {
236     int file_index;          /* file index */
237     int index;               /* stream index in the output file */
238     int source_index;        /* InputStream index */
239     AVStream *st;            /* stream in the output file */
240     int encoding_needed;     /* true if encoding needed for this stream */
241     int frame_number;
242     /* input pts and corresponding output pts
243        for A/V sync */
244     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
245     struct InputStream *sync_ist; /* input stream to sync against */
246     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
247     AVBitStreamFilterContext *bitstream_filters;
248     AVCodec *enc;
249
250     /* video only */
251     int video_resample;
252     AVFrame pict_tmp;      /* temporary image for resampling */
253     struct SwsContext *img_resample_ctx; /* for image resampling */
254     int resample_height;
255     int resample_width;
256     int resample_pix_fmt;
257     AVRational frame_rate;
258
259     float frame_aspect_ratio;
260
261     /* forced key frames */
262     int64_t *forced_kf_pts;
263     int forced_kf_count;
264     int forced_kf_index;
265
266     /* audio only */
267     int audio_resample;
268     ReSampleContext *resample; /* for audio resampling */
269     int resample_sample_fmt;
270     int resample_channels;
271     int resample_sample_rate;
272     int reformat_pair;
273     AVAudioConvert *reformat_ctx;
274     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
275     FILE *logfile;
276
277 #if CONFIG_AVFILTER
278     AVFilterContext *output_video_filter;
279     AVFilterContext *input_video_filter;
280     AVFilterBufferRef *picref;
281     char *avfilter;
282     AVFilterGraph *graph;
283 #endif
284
285    int sws_flags;
286    AVDictionary *opts;
287 } OutputStream;
288
289 static OutputStream **output_streams_for_file[MAX_FILES] = { NULL };
290 static int nb_output_streams_for_file[MAX_FILES] = { 0 };
291
292 typedef struct InputStream {
293     int file_index;
294     AVStream *st;
295     int discard;             /* true if stream data should be discarded */
296     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
297     AVCodec *dec;
298
299     int64_t       start;     /* time when read started */
300     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
301                                 is not defined */
302     int64_t       pts;       /* current pts */
303     PtsCorrectionContext pts_ctx;
304     double ts_scale;
305     int is_start;            /* is 1 at the start and after a discontinuity */
306     int showed_multi_packet_warning;
307     int is_past_recording_time;
308     AVDictionary *opts;
309 } InputStream;
310
311 typedef struct InputFile {
312     AVFormatContext *ctx;
313     int eof_reached;      /* true if eof reached */
314     int ist_index;        /* index of first stream in ist_table */
315     int buffer_size;      /* current total buffer size */
316     int64_t ts_offset;
317 } InputFile;
318
319 static InputStream *input_streams = NULL;
320 static int         nb_input_streams = 0;
321 static InputFile   *input_files   = NULL;
322 static int         nb_input_files   = 0;
323
324 #if CONFIG_AVFILTER
325
326 static int configure_video_filters(InputStream *ist, OutputStream *ost)
327 {
328     AVFilterContext *last_filter, *filter;
329     /** filter graph containing all filters including input & output */
330     AVCodecContext *codec = ost->st->codec;
331     AVCodecContext *icodec = ist->st->codec;
332     FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
333     AVRational sample_aspect_ratio;
334     char args[255];
335     int ret;
336
337     ost->graph = avfilter_graph_alloc();
338
339     if (ist->st->sample_aspect_ratio.num){
340         sample_aspect_ratio = ist->st->sample_aspect_ratio;
341     }else
342         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
343
344     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
345              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
346              sample_aspect_ratio.num, sample_aspect_ratio.den);
347
348     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
349                                        "src", args, NULL, ost->graph);
350     if (ret < 0)
351         return ret;
352     ret = avfilter_graph_create_filter(&ost->output_video_filter, &ffsink,
353                                        "out", NULL, &ffsink_ctx, ost->graph);
354     if (ret < 0)
355         return ret;
356     last_filter = ost->input_video_filter;
357
358     if (codec->width  != icodec->width || codec->height != icodec->height) {
359         snprintf(args, 255, "%d:%d:flags=0x%X",
360                  codec->width,
361                  codec->height,
362                  ost->sws_flags);
363         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
364                                                 NULL, args, NULL, ost->graph)) < 0)
365             return ret;
366         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
367             return ret;
368         last_filter = filter;
369     }
370
371     snprintf(args, sizeof(args), "flags=0x%X", ost->sws_flags);
372     ost->graph->scale_sws_opts = av_strdup(args);
373
374     if (ost->avfilter) {
375         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
376         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
377
378         outputs->name    = av_strdup("in");
379         outputs->filter_ctx = last_filter;
380         outputs->pad_idx = 0;
381         outputs->next    = NULL;
382
383         inputs->name    = av_strdup("out");
384         inputs->filter_ctx = ost->output_video_filter;
385         inputs->pad_idx = 0;
386         inputs->next    = NULL;
387
388         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, inputs, outputs, NULL)) < 0)
389             return ret;
390         av_freep(&ost->avfilter);
391     } else {
392         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
393             return ret;
394     }
395
396     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
397         return ret;
398
399     codec->width  = ost->output_video_filter->inputs[0]->w;
400     codec->height = ost->output_video_filter->inputs[0]->h;
401     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
402         ost->frame_aspect_ratio ? // overriden by the -aspect cli option
403         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
404         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
405
406     return 0;
407 }
408 #endif /* CONFIG_AVFILTER */
409
410 static void term_exit(void)
411 {
412     av_log(NULL, AV_LOG_QUIET, "");
413 }
414
415 static volatile int received_sigterm = 0;
416 static volatile int received_nb_signals = 0;
417
418 static void
419 sigterm_handler(int sig)
420 {
421     received_sigterm = sig;
422     received_nb_signals++;
423     term_exit();
424 }
425
426 static void term_init(void)
427 {
428     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
429     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
430 #ifdef SIGXCPU
431     signal(SIGXCPU, sigterm_handler);
432 #endif
433 }
434
435 static int decode_interrupt_cb(void)
436 {
437     return received_nb_signals > 1;
438 }
439
440 static int exit_program(int ret)
441 {
442     int i;
443
444     /* close files */
445     for(i=0;i<nb_output_files;i++) {
446         AVFormatContext *s = output_files[i];
447         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
448             avio_close(s->pb);
449         avformat_free_context(s);
450         av_free(output_streams_for_file[i]);
451         av_dict_free(&output_opts[i]);
452     }
453     for(i=0;i<nb_input_files;i++) {
454         av_close_input_file(input_files[i].ctx);
455     }
456     for (i = 0; i < nb_input_streams; i++)
457         av_dict_free(&input_streams[i].opts);
458
459     av_free(intra_matrix);
460     av_free(inter_matrix);
461
462     if (vstats_file)
463         fclose(vstats_file);
464     av_free(vstats_filename);
465
466     av_free(streamid_map);
467     av_free(stream_maps);
468     av_free(meta_data_maps);
469
470     av_freep(&input_streams);
471     av_freep(&input_files);
472
473     av_free(video_codec_name);
474     av_free(audio_codec_name);
475     av_free(subtitle_codec_name);
476     av_free(data_codec_name);
477
478     uninit_opts();
479     av_free(audio_buf);
480     av_free(audio_out);
481     allocated_audio_buf_size= allocated_audio_out_size= 0;
482     av_free(samples);
483
484 #if CONFIG_AVFILTER
485     avfilter_uninit();
486 #endif
487
488     if (received_sigterm) {
489         fprintf(stderr,
490             "Received signal %d: terminating.\n",
491             (int) received_sigterm);
492         exit (255);
493     }
494
495     exit(ret); /* not all OS-es handle main() return value */
496     return ret;
497 }
498
499 static void assert_avoptions(AVDictionary *m)
500 {
501     AVDictionaryEntry *t;
502     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
503         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
504         exit_program(1);
505     }
506 }
507
508 static void assert_codec_experimental(AVCodecContext *c, int encoder)
509 {
510     const char *codec_string = encoder ? "encoder" : "decoder";
511     AVCodec *codec;
512     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
513         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
514         av_log(NULL, AV_LOG_ERROR, "%s '%s' is experimental and might produce bad "
515                 "results.\nAdd '-strict experimental' if you want to use it.\n",
516                 codec_string, c->codec->name);
517         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
518         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
519             av_log(NULL, AV_LOG_ERROR, "Or use the non experimental %s '%s'.\n",
520                    codec_string, codec->name);
521         exit_program(1);
522     }
523 }
524
525 /* similar to ff_dynarray_add() and av_fast_realloc() */
526 static void *grow_array(void *array, int elem_size, int *size, int new_size)
527 {
528     if (new_size >= INT_MAX / elem_size) {
529         fprintf(stderr, "Array too big.\n");
530         exit_program(1);
531     }
532     if (*size < new_size) {
533         uint8_t *tmp = av_realloc(array, new_size*elem_size);
534         if (!tmp) {
535             fprintf(stderr, "Could not alloc buffer.\n");
536             exit_program(1);
537         }
538         memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
539         *size = new_size;
540         return tmp;
541     }
542     return array;
543 }
544
545 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
546 {
547     if(codec && codec->sample_fmts){
548         const enum AVSampleFormat *p= codec->sample_fmts;
549         for(; *p!=-1; p++){
550             if(*p == st->codec->sample_fmt)
551                 break;
552         }
553         if (*p == -1) {
554             av_log(NULL, AV_LOG_WARNING,
555                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
556                    av_get_sample_fmt_name(st->codec->sample_fmt),
557                    codec->name,
558                    av_get_sample_fmt_name(codec->sample_fmts[0]));
559             st->codec->sample_fmt = codec->sample_fmts[0];
560         }
561     }
562 }
563
564 /**
565  * Update the requested input sample format based on the output sample format.
566  * This is currently only used to request float output from decoders which
567  * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
568  * Ideally this will be removed in the future when decoders do not do format
569  * conversion and only output in their native format.
570  */
571 static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
572                               AVCodecContext *enc)
573 {
574     /* if sample formats match or a decoder sample format has already been
575        requested, just return */
576     if (enc->sample_fmt == dec->sample_fmt ||
577         dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
578         return;
579
580     /* if decoder supports more than one output format */
581     if (dec_codec && dec_codec->sample_fmts &&
582         dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
583         dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
584         const enum AVSampleFormat *p;
585         int min_dec = -1, min_inc = -1;
586
587         /* find a matching sample format in the encoder */
588         for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
589             if (*p == enc->sample_fmt) {
590                 dec->request_sample_fmt = *p;
591                 return;
592             } else if (*p > enc->sample_fmt) {
593                 min_inc = FFMIN(min_inc, *p - enc->sample_fmt);
594             } else
595                 min_dec = FFMIN(min_dec, enc->sample_fmt - *p);
596         }
597
598         /* if none match, provide the one that matches quality closest */
599         dec->request_sample_fmt = min_inc > 0 ? enc->sample_fmt + min_inc :
600                                   enc->sample_fmt - min_dec;
601     }
602 }
603
604 static void choose_sample_rate(AVStream *st, AVCodec *codec)
605 {
606     if(codec && codec->supported_samplerates){
607         const int *p= codec->supported_samplerates;
608         int best=0;
609         int best_dist=INT_MAX;
610         for(; *p; p++){
611             int dist= abs(st->codec->sample_rate - *p);
612             if(dist < best_dist){
613                 best_dist= dist;
614                 best= *p;
615             }
616         }
617         if(best_dist){
618             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
619         }
620         st->codec->sample_rate= best;
621     }
622 }
623
624 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
625 {
626     if(codec && codec->pix_fmts){
627         const enum PixelFormat *p= codec->pix_fmts;
628         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
629             if(st->codec->codec_id==CODEC_ID_MJPEG){
630                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
631             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
632                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE};
633             }
634         }
635         for(; *p!=-1; p++){
636             if(*p == st->codec->pix_fmt)
637                 break;
638         }
639         if (*p == -1) {
640             if(st->codec->pix_fmt != PIX_FMT_NONE)
641                 av_log(NULL, AV_LOG_WARNING,
642                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
643                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
644                         codec->name,
645                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
646             st->codec->pix_fmt = codec->pix_fmts[0];
647         }
648     }
649 }
650
651 static OutputStream *new_output_stream(AVFormatContext *oc, int file_idx, AVCodec *codec)
652 {
653     OutputStream *ost;
654     AVStream *st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
655     int idx      = oc->nb_streams - 1;
656
657     if (!st) {
658         av_log(NULL, AV_LOG_ERROR, "Could not alloc stream.\n");
659         exit_program(1);
660     }
661
662     output_streams_for_file[file_idx] =
663         grow_array(output_streams_for_file[file_idx],
664                    sizeof(*output_streams_for_file[file_idx]),
665                    &nb_output_streams_for_file[file_idx],
666                    oc->nb_streams);
667     ost = output_streams_for_file[file_idx][idx] =
668         av_mallocz(sizeof(OutputStream));
669     if (!ost) {
670         fprintf(stderr, "Could not alloc output stream\n");
671         exit_program(1);
672     }
673     ost->file_index = file_idx;
674     ost->index = idx;
675     ost->st    = st;
676     ost->enc   = codec;
677     if (codec)
678         ost->opts  = filter_codec_opts(codec_opts, codec->id, 1);
679
680     avcodec_get_context_defaults3(st->codec, codec);
681
682     ost->sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
683     return ost;
684 }
685
686 static int read_avserver_streams(AVFormatContext *s, const char *filename)
687 {
688     int i, err;
689     AVFormatContext *ic = NULL;
690     int nopts = 0;
691
692     err = avformat_open_input(&ic, filename, NULL, NULL);
693     if (err < 0)
694         return err;
695     /* copy stream format */
696     for(i=0;i<ic->nb_streams;i++) {
697         AVStream *st;
698         OutputStream *ost;
699         AVCodec *codec;
700
701         codec = avcodec_find_encoder(ic->streams[i]->codec->codec_id);
702         ost   = new_output_stream(s, nb_output_files, codec);
703         st    = ost->st;
704
705         // FIXME: a more elegant solution is needed
706         memcpy(st, ic->streams[i], sizeof(AVStream));
707         st->info = NULL;
708         avcodec_copy_context(st->codec, ic->streams[i]->codec);
709
710         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
711             if (audio_stream_copy) {
712                 st->stream_copy = 1;
713             } else
714                 choose_sample_fmt(st, codec);
715         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
716             if (video_stream_copy) {
717                 st->stream_copy = 1;
718             } else
719                 choose_pixel_fmt(st, codec);
720         }
721
722         if(st->codec->flags & CODEC_FLAG_BITEXACT)
723             nopts = 1;
724     }
725
726     av_close_input_file(ic);
727     return 0;
728 }
729
730 static double
731 get_sync_ipts(const OutputStream *ost)
732 {
733     const InputStream *ist = ost->sync_ist;
734     return (double)(ist->pts - start_time)/AV_TIME_BASE;
735 }
736
737 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
738     int ret;
739
740     while(bsfc){
741         AVPacket new_pkt= *pkt;
742         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
743                                           &new_pkt.data, &new_pkt.size,
744                                           pkt->data, pkt->size,
745                                           pkt->flags & AV_PKT_FLAG_KEY);
746         if(a>0){
747             av_free_packet(pkt);
748             new_pkt.destruct= av_destruct_packet;
749         } else if(a<0){
750             fprintf(stderr, "%s failed for stream %d, codec %s",
751                     bsfc->filter->name, pkt->stream_index,
752                     avctx->codec ? avctx->codec->name : "copy");
753             print_error("", a);
754             if (exit_on_error)
755                 exit_program(1);
756         }
757         *pkt= new_pkt;
758
759         bsfc= bsfc->next;
760     }
761
762     ret= av_interleaved_write_frame(s, pkt);
763     if(ret < 0){
764         print_error("av_interleaved_write_frame()", ret);
765         exit_program(1);
766     }
767 }
768
769 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
770
771 static void do_audio_out(AVFormatContext *s,
772                          OutputStream *ost,
773                          InputStream *ist,
774                          unsigned char *buf, int size)
775 {
776     uint8_t *buftmp;
777     int64_t audio_out_size, audio_buf_size;
778     int64_t allocated_for_size= size;
779
780     int size_out, frame_bytes, ret, resample_changed;
781     AVCodecContext *enc= ost->st->codec;
782     AVCodecContext *dec= ist->st->codec;
783     int osize = av_get_bytes_per_sample(enc->sample_fmt);
784     int isize = av_get_bytes_per_sample(dec->sample_fmt);
785     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
786
787 need_realloc:
788     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
789     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
790     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
791     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
792     audio_buf_size*= osize*enc->channels;
793
794     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
795     if(coded_bps > 8*osize)
796         audio_out_size= audio_out_size * coded_bps / (8*osize);
797     audio_out_size += FF_MIN_BUFFER_SIZE;
798
799     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
800         fprintf(stderr, "Buffer sizes too large\n");
801         exit_program(1);
802     }
803
804     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
805     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
806     if (!audio_buf || !audio_out){
807         fprintf(stderr, "Out of memory in do_audio_out\n");
808         exit_program(1);
809     }
810
811     if (enc->channels != dec->channels || enc->sample_rate != dec->sample_rate)
812         ost->audio_resample = 1;
813
814     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
815                        ost->resample_channels    != dec->channels   ||
816                        ost->resample_sample_rate != dec->sample_rate;
817
818     if ((ost->audio_resample && !ost->resample) || resample_changed) {
819         if (resample_changed) {
820             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",
821                    ist->file_index, ist->st->index,
822                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
823                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
824             ost->resample_sample_fmt  = dec->sample_fmt;
825             ost->resample_channels    = dec->channels;
826             ost->resample_sample_rate = dec->sample_rate;
827             if (ost->resample)
828                 audio_resample_close(ost->resample);
829         }
830         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
831         if (audio_sync_method <= 1 &&
832             ost->resample_sample_fmt  == enc->sample_fmt &&
833             ost->resample_channels    == enc->channels   &&
834             ost->resample_sample_rate == enc->sample_rate) {
835             ost->resample = NULL;
836             ost->audio_resample = 0;
837         } else if (ost->audio_resample) {
838             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
839                 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
840             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
841                                                    enc->sample_rate, dec->sample_rate,
842                                                    enc->sample_fmt,  dec->sample_fmt,
843                                                    16, 10, 0, 0.8);
844             if (!ost->resample) {
845                 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
846                         dec->channels, dec->sample_rate,
847                         enc->channels, enc->sample_rate);
848                 exit_program(1);
849             }
850         }
851     }
852
853 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
854     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
855         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
856         if (ost->reformat_ctx)
857             av_audio_convert_free(ost->reformat_ctx);
858         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
859                                                    dec->sample_fmt, 1, NULL, 0);
860         if (!ost->reformat_ctx) {
861             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
862                 av_get_sample_fmt_name(dec->sample_fmt),
863                 av_get_sample_fmt_name(enc->sample_fmt));
864             exit_program(1);
865         }
866         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
867     }
868
869     if(audio_sync_method){
870         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
871                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
872         double idelta= delta*dec->sample_rate / enc->sample_rate;
873         int byte_delta= ((int)idelta)*2*dec->channels;
874
875         //FIXME resample delay
876         if(fabs(delta) > 50){
877             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
878                 if(byte_delta < 0){
879                     byte_delta= FFMAX(byte_delta, -size);
880                     size += byte_delta;
881                     buf  -= byte_delta;
882                     if(verbose > 2)
883                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
884                     if(!size)
885                         return;
886                     ist->is_start=0;
887                 }else{
888                     static uint8_t *input_tmp= NULL;
889                     input_tmp= av_realloc(input_tmp, byte_delta + size);
890
891                     if(byte_delta > allocated_for_size - size){
892                         allocated_for_size= byte_delta + (int64_t)size;
893                         goto need_realloc;
894                     }
895                     ist->is_start=0;
896
897                     memset(input_tmp, 0, byte_delta);
898                     memcpy(input_tmp + byte_delta, buf, size);
899                     buf= input_tmp;
900                     size += byte_delta;
901                     if(verbose > 2)
902                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
903                 }
904             }else if(audio_sync_method>1){
905                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
906                 av_assert0(ost->audio_resample);
907                 if(verbose > 2)
908                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
909 //                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));
910                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
911             }
912         }
913     }else
914         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
915                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
916
917     if (ost->audio_resample) {
918         buftmp = audio_buf;
919         size_out = audio_resample(ost->resample,
920                                   (short *)buftmp, (short *)buf,
921                                   size / (dec->channels * isize));
922         size_out = size_out * enc->channels * osize;
923     } else {
924         buftmp = buf;
925         size_out = size;
926     }
927
928     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
929         const void *ibuf[6]= {buftmp};
930         void *obuf[6]= {audio_buf};
931         int istride[6]= {isize};
932         int ostride[6]= {osize};
933         int len= size_out/istride[0];
934         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
935             printf("av_audio_convert() failed\n");
936             if (exit_on_error)
937                 exit_program(1);
938             return;
939         }
940         buftmp = audio_buf;
941         size_out = len*osize;
942     }
943
944     /* now encode as many frames as possible */
945     if (enc->frame_size > 1) {
946         /* output resampled raw samples */
947         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
948             fprintf(stderr, "av_fifo_realloc2() failed\n");
949             exit_program(1);
950         }
951         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
952
953         frame_bytes = enc->frame_size * osize * enc->channels;
954
955         while (av_fifo_size(ost->fifo) >= frame_bytes) {
956             AVPacket pkt;
957             av_init_packet(&pkt);
958
959             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
960
961             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
962
963             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
964                                        (short *)audio_buf);
965             if (ret < 0) {
966                 fprintf(stderr, "Audio encoding failed\n");
967                 exit_program(1);
968             }
969             audio_size += ret;
970             pkt.stream_index= ost->index;
971             pkt.data= audio_out;
972             pkt.size= ret;
973             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
974                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
975             pkt.flags |= AV_PKT_FLAG_KEY;
976             write_frame(s, &pkt, enc, ost->bitstream_filters);
977
978             ost->sync_opts += enc->frame_size;
979         }
980     } else {
981         AVPacket pkt;
982         av_init_packet(&pkt);
983
984         ost->sync_opts += size_out / (osize * enc->channels);
985
986         /* output a pcm frame */
987         /* determine the size of the coded buffer */
988         size_out /= osize;
989         if (coded_bps)
990             size_out = size_out*coded_bps/8;
991
992         if(size_out > audio_out_size){
993             fprintf(stderr, "Internal error, buffer size too small\n");
994             exit_program(1);
995         }
996
997         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
998         ret = avcodec_encode_audio(enc, audio_out, size_out,
999                                    (short *)buftmp);
1000         if (ret < 0) {
1001             fprintf(stderr, "Audio encoding failed\n");
1002             exit_program(1);
1003         }
1004         audio_size += ret;
1005         pkt.stream_index= ost->index;
1006         pkt.data= audio_out;
1007         pkt.size= ret;
1008         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1009             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1010         pkt.flags |= AV_PKT_FLAG_KEY;
1011         write_frame(s, &pkt, enc, ost->bitstream_filters);
1012     }
1013 }
1014
1015 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1016 {
1017     AVCodecContext *dec;
1018     AVPicture *picture2;
1019     AVPicture picture_tmp;
1020     uint8_t *buf = 0;
1021
1022     dec = ist->st->codec;
1023
1024     /* deinterlace : must be done before any resize */
1025     if (do_deinterlace) {
1026         int size;
1027
1028         /* create temporary picture */
1029         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1030         buf = av_malloc(size);
1031         if (!buf)
1032             return;
1033
1034         picture2 = &picture_tmp;
1035         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1036
1037         if(avpicture_deinterlace(picture2, picture,
1038                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1039             /* if error, do not deinterlace */
1040             fprintf(stderr, "Deinterlacing failed\n");
1041             av_free(buf);
1042             buf = NULL;
1043             picture2 = picture;
1044         }
1045     } else {
1046         picture2 = picture;
1047     }
1048
1049     if (picture != picture2)
1050         *picture = *picture2;
1051     *bufp = buf;
1052 }
1053
1054 /* we begin to correct av delay at this threshold */
1055 #define AV_DELAY_MAX 0.100
1056
1057 static void do_subtitle_out(AVFormatContext *s,
1058                             OutputStream *ost,
1059                             InputStream *ist,
1060                             AVSubtitle *sub,
1061                             int64_t pts)
1062 {
1063     static uint8_t *subtitle_out = NULL;
1064     int subtitle_out_max_size = 1024 * 1024;
1065     int subtitle_out_size, nb, i;
1066     AVCodecContext *enc;
1067     AVPacket pkt;
1068
1069     if (pts == AV_NOPTS_VALUE) {
1070         fprintf(stderr, "Subtitle packets must have a pts\n");
1071         if (exit_on_error)
1072             exit_program(1);
1073         return;
1074     }
1075
1076     enc = ost->st->codec;
1077
1078     if (!subtitle_out) {
1079         subtitle_out = av_malloc(subtitle_out_max_size);
1080     }
1081
1082     /* Note: DVB subtitle need one packet to draw them and one other
1083        packet to clear them */
1084     /* XXX: signal it in the codec context ? */
1085     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1086         nb = 2;
1087     else
1088         nb = 1;
1089
1090     for(i = 0; i < nb; i++) {
1091         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1092         // start_display_time is required to be 0
1093         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1094         sub->end_display_time -= sub->start_display_time;
1095         sub->start_display_time = 0;
1096         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1097                                                     subtitle_out_max_size, sub);
1098         if (subtitle_out_size < 0) {
1099             fprintf(stderr, "Subtitle encoding failed\n");
1100             exit_program(1);
1101         }
1102
1103         av_init_packet(&pkt);
1104         pkt.stream_index = ost->index;
1105         pkt.data = subtitle_out;
1106         pkt.size = subtitle_out_size;
1107         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1108         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1109             /* XXX: the pts correction is handled here. Maybe handling
1110                it in the codec would be better */
1111             if (i == 0)
1112                 pkt.pts += 90 * sub->start_display_time;
1113             else
1114                 pkt.pts += 90 * sub->end_display_time;
1115         }
1116         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1117     }
1118 }
1119
1120 static int bit_buffer_size= 1024*256;
1121 static uint8_t *bit_buffer= NULL;
1122
1123 static void do_video_out(AVFormatContext *s,
1124                          OutputStream *ost,
1125                          InputStream *ist,
1126                          AVFrame *in_picture,
1127                          int *frame_size, float quality)
1128 {
1129     int nb_frames, i, ret, resample_changed;
1130     AVFrame *final_picture, *formatted_picture;
1131     AVCodecContext *enc, *dec;
1132     double sync_ipts;
1133
1134     enc = ost->st->codec;
1135     dec = ist->st->codec;
1136
1137     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1138
1139     /* by default, we output a single frame */
1140     nb_frames = 1;
1141
1142     *frame_size = 0;
1143
1144     if(video_sync_method){
1145         double vdelta = sync_ipts - ost->sync_opts;
1146         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1147         if (vdelta < -1.1)
1148             nb_frames = 0;
1149         else if (video_sync_method == 2 || (video_sync_method<0 && (s->oformat->flags & AVFMT_VARIABLE_FPS))){
1150             if(vdelta<=-0.6){
1151                 nb_frames=0;
1152             }else if(vdelta>0.6)
1153                 ost->sync_opts= lrintf(sync_ipts);
1154         }else if (vdelta > 1.1)
1155             nb_frames = lrintf(vdelta);
1156 //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);
1157         if (nb_frames == 0){
1158             ++nb_frames_drop;
1159             if (verbose>2)
1160                 fprintf(stderr, "*** drop!\n");
1161         }else if (nb_frames > 1) {
1162             nb_frames_dup += nb_frames - 1;
1163             if (verbose>2)
1164                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1165         }
1166     }else
1167         ost->sync_opts= lrintf(sync_ipts);
1168
1169     nb_frames= FFMIN(nb_frames, max_frames[AVMEDIA_TYPE_VIDEO] - ost->frame_number);
1170     if (nb_frames <= 0)
1171         return;
1172
1173     formatted_picture = in_picture;
1174     final_picture = formatted_picture;
1175
1176     resample_changed = ost->resample_width   != dec->width  ||
1177                        ost->resample_height  != dec->height ||
1178                        ost->resample_pix_fmt != dec->pix_fmt;
1179
1180     if (resample_changed) {
1181         av_log(NULL, AV_LOG_INFO,
1182                "Input stream #%d.%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1183                ist->file_index, ist->st->index,
1184                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1185                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1186         if(!ost->video_resample)
1187             exit_program(1);
1188     }
1189
1190 #if !CONFIG_AVFILTER
1191     if (ost->video_resample) {
1192         final_picture = &ost->pict_tmp;
1193         if (resample_changed) {
1194             /* initialize a new scaler context */
1195             sws_freeContext(ost->img_resample_ctx);
1196             ost->img_resample_ctx = sws_getContext(
1197                 ist->st->codec->width,
1198                 ist->st->codec->height,
1199                 ist->st->codec->pix_fmt,
1200                 ost->st->codec->width,
1201                 ost->st->codec->height,
1202                 ost->st->codec->pix_fmt,
1203                 ost->sws_flags, NULL, NULL, NULL);
1204             if (ost->img_resample_ctx == NULL) {
1205                 fprintf(stderr, "Cannot get resampling context\n");
1206                 exit_program(1);
1207             }
1208         }
1209         sws_scale(ost->img_resample_ctx, formatted_picture->data, formatted_picture->linesize,
1210               0, ost->resample_height, final_picture->data, final_picture->linesize);
1211     }
1212 #endif
1213
1214     /* duplicates frame if needed */
1215     for(i=0;i<nb_frames;i++) {
1216         AVPacket pkt;
1217         av_init_packet(&pkt);
1218         pkt.stream_index= ost->index;
1219
1220         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1221             /* raw pictures are written as AVPicture structure to
1222                avoid any copies. We support temorarily the older
1223                method. */
1224             AVFrame* old_frame = enc->coded_frame;
1225             enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
1226             pkt.data= (uint8_t *)final_picture;
1227             pkt.size=  sizeof(AVPicture);
1228             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1229             pkt.flags |= AV_PKT_FLAG_KEY;
1230
1231             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1232             enc->coded_frame = old_frame;
1233         } else {
1234             AVFrame big_picture;
1235
1236             big_picture= *final_picture;
1237             /* better than nothing: use input picture interlaced
1238                settings */
1239             big_picture.interlaced_frame = in_picture->interlaced_frame;
1240             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1241                 if(top_field_first == -1)
1242                     big_picture.top_field_first = in_picture->top_field_first;
1243                 else
1244                     big_picture.top_field_first = top_field_first;
1245             }
1246
1247             /* handles sameq here. This is not correct because it may
1248                not be a global option */
1249             big_picture.quality = quality;
1250             if(!me_threshold)
1251                 big_picture.pict_type = 0;
1252 //            big_picture.pts = AV_NOPTS_VALUE;
1253             big_picture.pts= ost->sync_opts;
1254 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1255 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1256             if (ost->forced_kf_index < ost->forced_kf_count &&
1257                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1258                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1259                 ost->forced_kf_index++;
1260             }
1261             ret = avcodec_encode_video(enc,
1262                                        bit_buffer, bit_buffer_size,
1263                                        &big_picture);
1264             if (ret < 0) {
1265                 fprintf(stderr, "Video encoding failed\n");
1266                 exit_program(1);
1267             }
1268
1269             if(ret>0){
1270                 pkt.data= bit_buffer;
1271                 pkt.size= ret;
1272                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1273                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1274 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1275    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1276    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1277
1278                 if(enc->coded_frame->key_frame)
1279                     pkt.flags |= AV_PKT_FLAG_KEY;
1280                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1281                 *frame_size = ret;
1282                 video_size += ret;
1283                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1284                 //        enc->frame_number-1, ret, enc->pict_type);
1285                 /* if two pass, output log */
1286                 if (ost->logfile && enc->stats_out) {
1287                     fprintf(ost->logfile, "%s", enc->stats_out);
1288                 }
1289             }
1290         }
1291         ost->sync_opts++;
1292         ost->frame_number++;
1293     }
1294 }
1295
1296 static double psnr(double d){
1297     return -10.0*log(d)/log(10.0);
1298 }
1299
1300 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1301                            int frame_size)
1302 {
1303     AVCodecContext *enc;
1304     int frame_number;
1305     double ti1, bitrate, avg_bitrate;
1306
1307     /* this is executed just the first time do_video_stats is called */
1308     if (!vstats_file) {
1309         vstats_file = fopen(vstats_filename, "w");
1310         if (!vstats_file) {
1311             perror("fopen");
1312             exit_program(1);
1313         }
1314     }
1315
1316     enc = ost->st->codec;
1317     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1318         frame_number = ost->frame_number;
1319         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1320         if (enc->flags&CODEC_FLAG_PSNR)
1321             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1322
1323         fprintf(vstats_file,"f_size= %6d ", frame_size);
1324         /* compute pts value */
1325         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1326         if (ti1 < 0.01)
1327             ti1 = 0.01;
1328
1329         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1330         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1331         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1332             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1333         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1334     }
1335 }
1336
1337 static void print_report(AVFormatContext **output_files,
1338                          OutputStream **ost_table, int nb_ostreams,
1339                          int is_last_report)
1340 {
1341     char buf[1024];
1342     OutputStream *ost;
1343     AVFormatContext *oc;
1344     int64_t total_size;
1345     AVCodecContext *enc;
1346     int frame_number, vid, i;
1347     double bitrate, ti1, pts;
1348     static int64_t last_time = -1;
1349     static int qp_histogram[52];
1350
1351     if (!is_last_report) {
1352         int64_t cur_time;
1353         /* display the report every 0.5 seconds */
1354         cur_time = av_gettime();
1355         if (last_time == -1) {
1356             last_time = cur_time;
1357             return;
1358         }
1359         if ((cur_time - last_time) < 500000)
1360             return;
1361         last_time = cur_time;
1362     }
1363
1364
1365     oc = output_files[0];
1366
1367     total_size = avio_size(oc->pb);
1368     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1369         total_size= avio_tell(oc->pb);
1370
1371     buf[0] = '\0';
1372     ti1 = 1e10;
1373     vid = 0;
1374     for(i=0;i<nb_ostreams;i++) {
1375         float q = -1;
1376         ost = ost_table[i];
1377         enc = ost->st->codec;
1378         if (!ost->st->stream_copy && enc->coded_frame)
1379             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1380         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1381             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1382         }
1383         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1384             float t = (av_gettime()-timer_start) / 1000000.0;
1385
1386             frame_number = ost->frame_number;
1387             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1388                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1389             if(is_last_report)
1390                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1391             if(qp_hist){
1392                 int j;
1393                 int qp = lrintf(q);
1394                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1395                     qp_histogram[qp]++;
1396                 for(j=0; j<32; j++)
1397                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1398             }
1399             if (enc->flags&CODEC_FLAG_PSNR){
1400                 int j;
1401                 double error, error_sum=0;
1402                 double scale, scale_sum=0;
1403                 char type[3]= {'Y','U','V'};
1404                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1405                 for(j=0; j<3; j++){
1406                     if(is_last_report){
1407                         error= enc->error[j];
1408                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1409                     }else{
1410                         error= enc->coded_frame->error[j];
1411                         scale= enc->width*enc->height*255.0*255.0;
1412                     }
1413                     if(j) scale/=4;
1414                     error_sum += error;
1415                     scale_sum += scale;
1416                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1417                 }
1418                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1419             }
1420             vid = 1;
1421         }
1422         /* compute min output value */
1423         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1424         if ((pts < ti1) && (pts > 0))
1425             ti1 = pts;
1426     }
1427     if (ti1 < 0.01)
1428         ti1 = 0.01;
1429
1430     if (verbose > 0 || is_last_report) {
1431         bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1432
1433         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1434             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1435             (double)total_size / 1024, ti1, bitrate);
1436
1437         if (nb_frames_dup || nb_frames_drop)
1438           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1439                   nb_frames_dup, nb_frames_drop);
1440
1441         if (verbose >= 0)
1442             fprintf(stderr, "%s    \r", buf);
1443
1444         fflush(stderr);
1445     }
1446
1447     if (is_last_report && verbose >= 0){
1448         int64_t raw= audio_size + video_size + extra_size;
1449         fprintf(stderr, "\n");
1450         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1451                 video_size/1024.0,
1452                 audio_size/1024.0,
1453                 extra_size/1024.0,
1454                 100.0*(total_size - raw)/raw
1455         );
1456     }
1457 }
1458
1459 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1460 {
1461     int fill_char = 0x00;
1462     if (sample_fmt == AV_SAMPLE_FMT_U8)
1463         fill_char = 0x80;
1464     memset(buf, fill_char, size);
1465 }
1466
1467 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1468 static int output_packet(InputStream *ist, int ist_index,
1469                          OutputStream **ost_table, int nb_ostreams,
1470                          const AVPacket *pkt)
1471 {
1472     AVFormatContext *os;
1473     OutputStream *ost;
1474     int ret, i;
1475     int got_output;
1476     AVFrame picture;
1477     void *buffer_to_free = NULL;
1478     static unsigned int samples_size= 0;
1479     AVSubtitle subtitle, *subtitle_to_free;
1480     int64_t pkt_pts = AV_NOPTS_VALUE;
1481 #if CONFIG_AVFILTER
1482     int frame_available;
1483 #endif
1484     float quality;
1485
1486     AVPacket avpkt;
1487     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1488
1489     if(ist->next_pts == AV_NOPTS_VALUE)
1490         ist->next_pts= ist->pts;
1491
1492     if (pkt == NULL) {
1493         /* EOF handling */
1494         av_init_packet(&avpkt);
1495         avpkt.data = NULL;
1496         avpkt.size = 0;
1497         goto handle_eof;
1498     } else {
1499         avpkt = *pkt;
1500     }
1501
1502     if(pkt->dts != AV_NOPTS_VALUE)
1503         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1504     if(pkt->pts != AV_NOPTS_VALUE)
1505         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1506
1507     //while we have more to decode or while the decoder did output something on EOF
1508     while (avpkt.size > 0 || (!pkt && got_output)) {
1509         uint8_t *data_buf, *decoded_data_buf;
1510         int data_size, decoded_data_size;
1511     handle_eof:
1512         ist->pts= ist->next_pts;
1513
1514         if(avpkt.size && avpkt.size != pkt->size &&
1515            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1516             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1517             ist->showed_multi_packet_warning=1;
1518         }
1519
1520         /* decode the packet if needed */
1521         decoded_data_buf = NULL; /* fail safe */
1522         decoded_data_size= 0;
1523         data_buf  = avpkt.data;
1524         data_size = avpkt.size;
1525         subtitle_to_free = NULL;
1526         if (ist->decoding_needed) {
1527             switch(ist->st->codec->codec_type) {
1528             case AVMEDIA_TYPE_AUDIO:{
1529                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1530                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1531                     av_free(samples);
1532                     samples= av_malloc(samples_size);
1533                 }
1534                 decoded_data_size= samples_size;
1535                     /* XXX: could avoid copy if PCM 16 bits with same
1536                        endianness as CPU */
1537                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1538                                             &avpkt);
1539                 if (ret < 0)
1540                     return ret;
1541                 avpkt.data += ret;
1542                 avpkt.size -= ret;
1543                 data_size   = ret;
1544                 got_output  = decoded_data_size > 0;
1545                 /* Some bug in mpeg audio decoder gives */
1546                 /* decoded_data_size < 0, it seems they are overflows */
1547                 if (!got_output) {
1548                     /* no audio frame */
1549                     continue;
1550                 }
1551                 decoded_data_buf = (uint8_t *)samples;
1552                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1553                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1554                 break;}
1555             case AVMEDIA_TYPE_VIDEO:
1556                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1557                     /* XXX: allocate picture correctly */
1558                     avcodec_get_frame_defaults(&picture);
1559                     avpkt.pts = pkt_pts;
1560                     avpkt.dts = ist->pts;
1561                     pkt_pts = AV_NOPTS_VALUE;
1562
1563                     ret = avcodec_decode_video2(ist->st->codec,
1564                                                 &picture, &got_output, &avpkt);
1565                     quality = same_quality ? picture.quality : 0;
1566                     if (ret < 0)
1567                         return ret;
1568                     if (!got_output) {
1569                         /* no picture yet */
1570                         goto discard_packet;
1571                     }
1572                     ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, picture.pkt_pts, picture.pkt_dts);
1573                     if (ist->st->codec->time_base.num != 0) {
1574                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1575                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1576                                           ist->st->codec->time_base.num * ticks) /
1577                             ist->st->codec->time_base.den;
1578                     }
1579                     avpkt.size = 0;
1580                     buffer_to_free = NULL;
1581                     pre_process_video_frame(ist, (AVPicture *)&picture, &buffer_to_free);
1582                     break;
1583             case AVMEDIA_TYPE_SUBTITLE:
1584                 ret = avcodec_decode_subtitle2(ist->st->codec,
1585                                                &subtitle, &got_output, &avpkt);
1586                 if (ret < 0)
1587                     return ret;
1588                 if (!got_output) {
1589                     goto discard_packet;
1590                 }
1591                 subtitle_to_free = &subtitle;
1592                 avpkt.size = 0;
1593                 break;
1594             default:
1595                 return -1;
1596             }
1597         } else {
1598             switch(ist->st->codec->codec_type) {
1599             case AVMEDIA_TYPE_AUDIO:
1600                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1601                     ist->st->codec->sample_rate;
1602                 break;
1603             case AVMEDIA_TYPE_VIDEO:
1604                 if (ist->st->codec->time_base.num != 0) {
1605                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1606                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1607                                       ist->st->codec->time_base.num * ticks) /
1608                         ist->st->codec->time_base.den;
1609                 }
1610                 break;
1611             }
1612             ret = avpkt.size;
1613             avpkt.size = 0;
1614         }
1615
1616 #if CONFIG_AVFILTER
1617         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1618             for (i = 0; i < nb_ostreams; i++) {
1619                 ost = ost_table[i];
1620                 if (ost->input_video_filter && ost->source_index == ist_index) {
1621                     AVRational sar;
1622                     if (ist->st->sample_aspect_ratio.num)
1623                         sar = ist->st->sample_aspect_ratio;
1624                     else
1625                         sar = ist->st->codec->sample_aspect_ratio;
1626                     // add it to be filtered
1627                     av_vsrc_buffer_add_frame(ost->input_video_filter, &picture,
1628                                              ist->pts,
1629                                              sar);
1630                 }
1631             }
1632         }
1633 #endif
1634
1635         // preprocess audio (volume)
1636         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1637             if (audio_volume != 256) {
1638                 short *volp;
1639                 volp = samples;
1640                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1641                     int v = ((*volp) * audio_volume + 128) >> 8;
1642                     if (v < -32768) v = -32768;
1643                     if (v >  32767) v = 32767;
1644                     *volp++ = v;
1645                 }
1646             }
1647         }
1648
1649         /* frame rate emulation */
1650         if (rate_emu) {
1651             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1652             int64_t now = av_gettime() - ist->start;
1653             if (pts > now)
1654                 usleep(pts - now);
1655         }
1656         /* if output time reached then transcode raw format,
1657            encode packets and output them */
1658         if (start_time == 0 || ist->pts >= start_time)
1659             for(i=0;i<nb_ostreams;i++) {
1660                 int frame_size;
1661
1662                 ost = ost_table[i];
1663                 if (ost->source_index == ist_index) {
1664 #if CONFIG_AVFILTER
1665                 frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1666                     !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1667                 while (frame_available) {
1668                     AVRational ist_pts_tb;
1669                     if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter)
1670                         get_filtered_video_frame(ost->output_video_filter, &picture, &ost->picref, &ist_pts_tb);
1671                     if (ost->picref)
1672                         ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1673 #endif
1674                     os = output_files[ost->file_index];
1675
1676                     /* set the input output pts pairs */
1677                     //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
1678
1679                     if (ost->encoding_needed) {
1680                         av_assert0(ist->decoding_needed);
1681                         switch(ost->st->codec->codec_type) {
1682                         case AVMEDIA_TYPE_AUDIO:
1683                             do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1684                             break;
1685                         case AVMEDIA_TYPE_VIDEO:
1686 #if CONFIG_AVFILTER
1687                             if (ost->picref->video && !ost->frame_aspect_ratio)
1688                                 ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
1689 #endif
1690                             do_video_out(os, ost, ist, &picture, &frame_size,
1691                                          same_quality ? quality : ost->st->codec->global_quality);
1692                             if (vstats_filename && frame_size)
1693                                 do_video_stats(os, ost, frame_size);
1694                             break;
1695                         case AVMEDIA_TYPE_SUBTITLE:
1696                             do_subtitle_out(os, ost, ist, &subtitle,
1697                                             pkt->pts);
1698                             break;
1699                         default:
1700                             abort();
1701                         }
1702                     } else {
1703                         AVFrame avframe; //FIXME/XXX remove this
1704                         AVPacket opkt;
1705                         int64_t ost_tb_start_time= av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1706
1707                         av_init_packet(&opkt);
1708
1709                         if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1710 #if !CONFIG_AVFILTER
1711                             continue;
1712 #else
1713                             goto cont;
1714 #endif
1715
1716                         /* no reencoding needed : output the packet directly */
1717                         /* force the input stream PTS */
1718
1719                         avcodec_get_frame_defaults(&avframe);
1720                         ost->st->codec->coded_frame= &avframe;
1721                         avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1722
1723                         if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1724                             audio_size += data_size;
1725                         else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1726                             video_size += data_size;
1727                             ost->sync_opts++;
1728                         }
1729
1730                         opkt.stream_index= ost->index;
1731                         if(pkt->pts != AV_NOPTS_VALUE)
1732                             opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1733                         else
1734                             opkt.pts= AV_NOPTS_VALUE;
1735
1736                         if (pkt->dts == AV_NOPTS_VALUE)
1737                             opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1738                         else
1739                             opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1740                         opkt.dts -= ost_tb_start_time;
1741
1742                         opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1743                         opkt.flags= pkt->flags;
1744
1745                         //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1746                         if(   ost->st->codec->codec_id != CODEC_ID_H264
1747                            && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1748                            && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1749                            ) {
1750                             if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1751                                 opkt.destruct= av_destruct_packet;
1752                         } else {
1753                             opkt.data = data_buf;
1754                             opkt.size = data_size;
1755                         }
1756
1757                         write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1758                         ost->st->codec->frame_number++;
1759                         ost->frame_number++;
1760                         av_free_packet(&opkt);
1761                     }
1762 #if CONFIG_AVFILTER
1763                     cont:
1764                     frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1765                                        ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1766                     if (ost->picref)
1767                         avfilter_unref_buffer(ost->picref);
1768                 }
1769 #endif
1770                 }
1771             }
1772
1773         av_free(buffer_to_free);
1774         /* XXX: allocate the subtitles in the codec ? */
1775         if (subtitle_to_free) {
1776             avsubtitle_free(subtitle_to_free);
1777             subtitle_to_free = NULL;
1778         }
1779     }
1780  discard_packet:
1781     if (pkt == NULL) {
1782         /* EOF handling */
1783
1784         for(i=0;i<nb_ostreams;i++) {
1785             ost = ost_table[i];
1786             if (ost->source_index == ist_index) {
1787                 AVCodecContext *enc= ost->st->codec;
1788                 os = output_files[ost->file_index];
1789
1790                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1791                     continue;
1792                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1793                     continue;
1794
1795                 if (ost->encoding_needed) {
1796                     for(;;) {
1797                         AVPacket pkt;
1798                         int fifo_bytes;
1799                         av_init_packet(&pkt);
1800                         pkt.stream_index= ost->index;
1801
1802                         switch(ost->st->codec->codec_type) {
1803                         case AVMEDIA_TYPE_AUDIO:
1804                             fifo_bytes = av_fifo_size(ost->fifo);
1805                             ret = 0;
1806                             /* encode any samples remaining in fifo */
1807                             if (fifo_bytes > 0) {
1808                                 int osize = av_get_bytes_per_sample(enc->sample_fmt);
1809                                 int fs_tmp = enc->frame_size;
1810
1811                                 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1812                                 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1813                                     enc->frame_size = fifo_bytes / (osize * enc->channels);
1814                                 } else { /* pad */
1815                                     int frame_bytes = enc->frame_size*osize*enc->channels;
1816                                     if (allocated_audio_buf_size < frame_bytes)
1817                                         exit_program(1);
1818                                     generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1819                                 }
1820
1821                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1822                                 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1823                                                           ost->st->time_base.num, enc->sample_rate);
1824                                 enc->frame_size = fs_tmp;
1825                             }
1826                             if(ret <= 0) {
1827                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1828                             }
1829                             if (ret < 0) {
1830                                 fprintf(stderr, "Audio encoding failed\n");
1831                                 exit_program(1);
1832                             }
1833                             audio_size += ret;
1834                             pkt.flags |= AV_PKT_FLAG_KEY;
1835                             break;
1836                         case AVMEDIA_TYPE_VIDEO:
1837                             ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1838                             if (ret < 0) {
1839                                 fprintf(stderr, "Video encoding failed\n");
1840                                 exit_program(1);
1841                             }
1842                             video_size += ret;
1843                             if(enc->coded_frame && enc->coded_frame->key_frame)
1844                                 pkt.flags |= AV_PKT_FLAG_KEY;
1845                             if (ost->logfile && enc->stats_out) {
1846                                 fprintf(ost->logfile, "%s", enc->stats_out);
1847                             }
1848                             break;
1849                         default:
1850                             ret=-1;
1851                         }
1852
1853                         if(ret<=0)
1854                             break;
1855                         pkt.data= bit_buffer;
1856                         pkt.size= ret;
1857                         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1858                             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1859                         write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1860                     }
1861                 }
1862             }
1863         }
1864     }
1865
1866     return 0;
1867 }
1868
1869 static void print_sdp(AVFormatContext **avc, int n)
1870 {
1871     char sdp[2048];
1872
1873     av_sdp_create(avc, n, sdp, sizeof(sdp));
1874     printf("SDP:\n%s\n", sdp);
1875     fflush(stdout);
1876 }
1877
1878 static int copy_chapters(int infile, int outfile)
1879 {
1880     AVFormatContext *is = input_files[infile].ctx;
1881     AVFormatContext *os = output_files[outfile];
1882     int i;
1883
1884     for (i = 0; i < is->nb_chapters; i++) {
1885         AVChapter *in_ch = is->chapters[i], *out_ch;
1886         int64_t ts_off   = av_rescale_q(start_time - input_files[infile].ts_offset,
1887                                       AV_TIME_BASE_Q, in_ch->time_base);
1888         int64_t rt       = (recording_time == INT64_MAX) ? INT64_MAX :
1889                            av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
1890
1891
1892         if (in_ch->end < ts_off)
1893             continue;
1894         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
1895             break;
1896
1897         out_ch = av_mallocz(sizeof(AVChapter));
1898         if (!out_ch)
1899             return AVERROR(ENOMEM);
1900
1901         out_ch->id        = in_ch->id;
1902         out_ch->time_base = in_ch->time_base;
1903         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
1904         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
1905
1906         if (metadata_chapters_autocopy)
1907             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
1908
1909         os->nb_chapters++;
1910         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
1911         if (!os->chapters)
1912             return AVERROR(ENOMEM);
1913         os->chapters[os->nb_chapters - 1] = out_ch;
1914     }
1915     return 0;
1916 }
1917
1918 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1919                                     AVCodecContext *avctx)
1920 {
1921     char *p;
1922     int n = 1, i;
1923     int64_t t;
1924
1925     for (p = kf; *p; p++)
1926         if (*p == ',')
1927             n++;
1928     ost->forced_kf_count = n;
1929     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1930     if (!ost->forced_kf_pts) {
1931         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1932         exit_program(1);
1933     }
1934     for (i = 0; i < n; i++) {
1935         p = i ? strchr(p, ',') + 1 : kf;
1936         t = parse_time_or_die("force_key_frames", p, 1);
1937         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1938     }
1939 }
1940
1941 /*
1942  * The following code is the main loop of the file converter
1943  */
1944 static int transcode(AVFormatContext **output_files,
1945                      int nb_output_files,
1946                      InputFile *input_files,
1947                      int nb_input_files,
1948                      StreamMap *stream_maps, int nb_stream_maps)
1949 {
1950     int ret = 0, i, j, k, n, nb_ostreams = 0;
1951     AVFormatContext *is, *os;
1952     AVCodecContext *codec, *icodec;
1953     OutputStream *ost, **ost_table = NULL;
1954     InputStream *ist;
1955     char error[1024];
1956     int want_sdp = 1;
1957     uint8_t no_packet[MAX_FILES]={0};
1958     int no_packet_count=0;
1959
1960     if (rate_emu)
1961         for (i = 0; i < nb_input_streams; i++)
1962             input_streams[i].start = av_gettime();
1963
1964     /* output stream init */
1965     nb_ostreams = 0;
1966     for(i=0;i<nb_output_files;i++) {
1967         os = output_files[i];
1968         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1969             av_dump_format(output_files[i], i, output_files[i]->filename, 1);
1970             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
1971             ret = AVERROR(EINVAL);
1972             goto fail;
1973         }
1974         nb_ostreams += os->nb_streams;
1975     }
1976     if (nb_stream_maps > 0 && nb_stream_maps != nb_ostreams) {
1977         fprintf(stderr, "Number of stream maps must match number of output streams\n");
1978         ret = AVERROR(EINVAL);
1979         goto fail;
1980     }
1981
1982     /* Sanity check the mapping args -- do the input files & streams exist? */
1983     for(i=0;i<nb_stream_maps;i++) {
1984         int fi = stream_maps[i].file_index;
1985         int si = stream_maps[i].stream_index;
1986
1987         if (fi < 0 || fi > nb_input_files - 1 ||
1988             si < 0 || si > input_files[fi].ctx->nb_streams - 1) {
1989             fprintf(stderr,"Could not find input stream #%d.%d\n", fi, si);
1990             ret = AVERROR(EINVAL);
1991             goto fail;
1992         }
1993         fi = stream_maps[i].sync_file_index;
1994         si = stream_maps[i].sync_stream_index;
1995         if (fi < 0 || fi > nb_input_files - 1 ||
1996             si < 0 || si > input_files[fi].ctx->nb_streams - 1) {
1997             fprintf(stderr,"Could not find sync stream #%d.%d\n", fi, si);
1998             ret = AVERROR(EINVAL);
1999             goto fail;
2000         }
2001     }
2002
2003     ost_table = av_mallocz(sizeof(OutputStream *) * nb_ostreams);
2004     if (!ost_table)
2005         goto fail;
2006     n = 0;
2007     for(k=0;k<nb_output_files;k++) {
2008         os = output_files[k];
2009         for(i=0;i<os->nb_streams;i++,n++) {
2010             int found;
2011             ost = ost_table[n] = output_streams_for_file[k][i];
2012             if (nb_stream_maps > 0) {
2013                 ost->source_index = input_files[stream_maps[n].file_index].ist_index +
2014                     stream_maps[n].stream_index;
2015
2016                 /* Sanity check that the stream types match */
2017                 if (input_streams[ost->source_index].st->codec->codec_type != ost->st->codec->codec_type) {
2018                     int i= ost->file_index;
2019                     av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2020                     fprintf(stderr, "Codec type mismatch for mapping #%d.%d -> #%d.%d\n",
2021                         stream_maps[n].file_index, stream_maps[n].stream_index,
2022                         ost->file_index, ost->index);
2023                     exit_program(1);
2024                 }
2025
2026             } else {
2027                 int best_nb_frames=-1;
2028                 /* get corresponding input stream index : we select the first one with the right type */
2029                 found = 0;
2030                 for (j = 0; j < nb_input_streams; j++) {
2031                     int skip=0;
2032                     ist = &input_streams[j];
2033                     if(opt_programid){
2034                         int pi,si;
2035                         AVFormatContext *f = input_files[ist->file_index].ctx;
2036                         skip=1;
2037                         for(pi=0; pi<f->nb_programs; pi++){
2038                             AVProgram *p= f->programs[pi];
2039                             if(p->id == opt_programid)
2040                                 for(si=0; si<p->nb_stream_indexes; si++){
2041                                     if(f->streams[ p->stream_index[si] ] == ist->st)
2042                                         skip=0;
2043                                 }
2044                         }
2045                     }
2046                     if (ist->discard && ist->st->discard != AVDISCARD_ALL && !skip &&
2047                         ist->st->codec->codec_type == ost->st->codec->codec_type) {
2048                         if(best_nb_frames < ist->st->codec_info_nb_frames){
2049                             best_nb_frames= ist->st->codec_info_nb_frames;
2050                             ost->source_index = j;
2051                             found = 1;
2052                         }
2053                     }
2054                 }
2055
2056                 if (!found) {
2057                     if(! opt_programid) {
2058                         /* try again and reuse existing stream */
2059                         for (j = 0; j < nb_input_streams; j++) {
2060                             ist = &input_streams[j];
2061                             if (   ist->st->codec->codec_type == ost->st->codec->codec_type
2062                                 && ist->st->discard != AVDISCARD_ALL) {
2063                                 ost->source_index = j;
2064                                 found = 1;
2065                             }
2066                         }
2067                     }
2068                     if (!found) {
2069                         int i= ost->file_index;
2070                         av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2071                         fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",
2072                                 ost->file_index, ost->index);
2073                         exit_program(1);
2074                     }
2075                 }
2076             }
2077             ist = &input_streams[ost->source_index];
2078             ist->discard = 0;
2079             ost->sync_ist = (nb_stream_maps > 0) ?
2080                 &input_streams[input_files[stream_maps[n].sync_file_index].ist_index +
2081                          stream_maps[n].sync_stream_index] : ist;
2082         }
2083     }
2084
2085     /* for each output stream, we compute the right encoding parameters */
2086     for(i=0;i<nb_ostreams;i++) {
2087         ost = ost_table[i];
2088         os = output_files[ost->file_index];
2089         ist = &input_streams[ost->source_index];
2090
2091         codec = ost->st->codec;
2092         icodec = ist->st->codec;
2093
2094         ost->st->disposition = ist->st->disposition;
2095         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2096         codec->chroma_sample_location = icodec->chroma_sample_location;
2097
2098         if (ost->st->stream_copy) {
2099             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2100
2101             if (extra_size > INT_MAX)
2102                 goto fail;
2103
2104             /* if stream_copy is selected, no need to decode or encode */
2105             codec->codec_id = icodec->codec_id;
2106             codec->codec_type = icodec->codec_type;
2107
2108             if(!codec->codec_tag){
2109                 if(   !os->oformat->codec_tag
2110                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2111                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2112                     codec->codec_tag = icodec->codec_tag;
2113             }
2114
2115             codec->bit_rate = icodec->bit_rate;
2116             codec->rc_max_rate    = icodec->rc_max_rate;
2117             codec->rc_buffer_size = icodec->rc_buffer_size;
2118             codec->extradata= av_mallocz(extra_size);
2119             if (!codec->extradata)
2120                 goto fail;
2121             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2122             codec->extradata_size= icodec->extradata_size;
2123             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){
2124                 codec->time_base = icodec->time_base;
2125                 codec->time_base.num *= icodec->ticks_per_frame;
2126                 av_reduce(&codec->time_base.num, &codec->time_base.den,
2127                           codec->time_base.num, codec->time_base.den, INT_MAX);
2128             }else
2129                 codec->time_base = ist->st->time_base;
2130             switch(codec->codec_type) {
2131             case AVMEDIA_TYPE_AUDIO:
2132                 if(audio_volume != 256) {
2133                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2134                     exit_program(1);
2135                 }
2136                 codec->channel_layout = icodec->channel_layout;
2137                 codec->sample_rate = icodec->sample_rate;
2138                 codec->channels = icodec->channels;
2139                 codec->frame_size = icodec->frame_size;
2140                 codec->audio_service_type = icodec->audio_service_type;
2141                 codec->block_align= icodec->block_align;
2142                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2143                     codec->block_align= 0;
2144                 if(codec->codec_id == CODEC_ID_AC3)
2145                     codec->block_align= 0;
2146                 break;
2147             case AVMEDIA_TYPE_VIDEO:
2148                 codec->pix_fmt = icodec->pix_fmt;
2149                 codec->width = icodec->width;
2150                 codec->height = icodec->height;
2151                 codec->has_b_frames = icodec->has_b_frames;
2152                 if (!codec->sample_aspect_ratio.num) {
2153                     codec->sample_aspect_ratio =
2154                     ost->st->sample_aspect_ratio =
2155                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2156                         ist->st->codec->sample_aspect_ratio.num ?
2157                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2158                 }
2159                 break;
2160             case AVMEDIA_TYPE_SUBTITLE:
2161                 codec->width = icodec->width;
2162                 codec->height = icodec->height;
2163                 break;
2164             case AVMEDIA_TYPE_DATA:
2165                 break;
2166             default:
2167                 abort();
2168             }
2169         } else {
2170             if (!ost->enc)
2171                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2172             switch(codec->codec_type) {
2173             case AVMEDIA_TYPE_AUDIO:
2174                 ost->fifo= av_fifo_alloc(1024);
2175                 if(!ost->fifo)
2176                     goto fail;
2177                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2178                 if (!codec->sample_rate) {
2179                     codec->sample_rate = icodec->sample_rate;
2180                     if (icodec->lowres)
2181                         codec->sample_rate >>= icodec->lowres;
2182                 }
2183                 choose_sample_rate(ost->st, ost->enc);
2184                 codec->time_base = (AVRational){1, codec->sample_rate};
2185                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2186                     codec->sample_fmt = icodec->sample_fmt;
2187                 choose_sample_fmt(ost->st, ost->enc);
2188                 if (!codec->channels)
2189                     codec->channels = icodec->channels;
2190                 codec->channel_layout = icodec->channel_layout;
2191                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2192                     codec->channel_layout = 0;
2193                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2194                 icodec->request_channels = codec->channels;
2195                 ist->decoding_needed = 1;
2196                 ost->encoding_needed = 1;
2197                 ost->resample_sample_fmt  = icodec->sample_fmt;
2198                 ost->resample_sample_rate = icodec->sample_rate;
2199                 ost->resample_channels    = icodec->channels;
2200                 break;
2201             case AVMEDIA_TYPE_VIDEO:
2202                 if (codec->pix_fmt == PIX_FMT_NONE)
2203                     codec->pix_fmt = icodec->pix_fmt;
2204                 choose_pixel_fmt(ost->st, ost->enc);
2205
2206                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2207                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2208                     exit_program(1);
2209                 }
2210
2211                 if (!codec->width || !codec->height) {
2212                     codec->width  = icodec->width;
2213                     codec->height = icodec->height;
2214                 }
2215
2216                 ost->video_resample = codec->width   != icodec->width  ||
2217                                       codec->height  != icodec->height ||
2218                                       codec->pix_fmt != icodec->pix_fmt;
2219                 if (ost->video_resample) {
2220 #if !CONFIG_AVFILTER
2221                     avcodec_get_frame_defaults(&ost->pict_tmp);
2222                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2223                                        codec->width, codec->height)) {
2224                         fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
2225                         exit_program(1);
2226                     }
2227                     ost->img_resample_ctx = sws_getContext(
2228                         icodec->width,
2229                         icodec->height,
2230                         icodec->pix_fmt,
2231                         codec->width,
2232                         codec->height,
2233                         codec->pix_fmt,
2234                         ost->sws_flags, NULL, NULL, NULL);
2235                     if (ost->img_resample_ctx == NULL) {
2236                         fprintf(stderr, "Cannot get resampling context\n");
2237                         exit_program(1);
2238                     }
2239 #endif
2240                     codec->bits_per_raw_sample= 0;
2241                 }
2242
2243                 ost->resample_height = icodec->height;
2244                 ost->resample_width  = icodec->width;
2245                 ost->resample_pix_fmt= icodec->pix_fmt;
2246                 ost->encoding_needed = 1;
2247                 ist->decoding_needed = 1;
2248
2249                 if (!ost->frame_rate.num)
2250                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2251                 if (ost->enc && ost->enc->supported_framerates && !force_fps) {
2252                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2253                     ost->frame_rate = ost->enc->supported_framerates[idx];
2254                 }
2255                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2256
2257 #if CONFIG_AVFILTER
2258                 if (configure_video_filters(ist, ost)) {
2259                     fprintf(stderr, "Error opening filters!\n");
2260                     exit(1);
2261                 }
2262 #endif
2263                 break;
2264             case AVMEDIA_TYPE_SUBTITLE:
2265                 ost->encoding_needed = 1;
2266                 ist->decoding_needed = 1;
2267                 break;
2268             default:
2269                 abort();
2270                 break;
2271             }
2272             /* two pass mode */
2273             if (ost->encoding_needed &&
2274                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2275                 char logfilename[1024];
2276                 FILE *f;
2277
2278                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2279                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2280                          i);
2281                 if (codec->flags & CODEC_FLAG_PASS1) {
2282                     f = fopen(logfilename, "wb");
2283                     if (!f) {
2284                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2285                         exit_program(1);
2286                     }
2287                     ost->logfile = f;
2288                 } else {
2289                     char  *logbuffer;
2290                     size_t logbuffer_size;
2291                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2292                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2293                         exit_program(1);
2294                     }
2295                     codec->stats_in = logbuffer;
2296                 }
2297             }
2298         }
2299         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2300             int size= codec->width * codec->height;
2301             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2302         }
2303     }
2304
2305     if (!bit_buffer)
2306         bit_buffer = av_malloc(bit_buffer_size);
2307     if (!bit_buffer) {
2308         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2309                 bit_buffer_size);
2310         ret = AVERROR(ENOMEM);
2311         goto fail;
2312     }
2313
2314     /* open each encoder */
2315     for(i=0;i<nb_ostreams;i++) {
2316         ost = ost_table[i];
2317         if (ost->encoding_needed) {
2318             AVCodec *codec = ost->enc;
2319             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2320             if (!codec) {
2321                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2322                          ost->st->codec->codec_id, ost->file_index, ost->index);
2323                 ret = AVERROR(EINVAL);
2324                 goto dump_format;
2325             }
2326             if (dec->subtitle_header) {
2327                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2328                 if (!ost->st->codec->subtitle_header) {
2329                     ret = AVERROR(ENOMEM);
2330                     goto dump_format;
2331                 }
2332                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2333                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2334             }
2335             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2336                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2337                         ost->file_index, ost->index);
2338                 ret = AVERROR(EINVAL);
2339                 goto dump_format;
2340             }
2341             assert_codec_experimental(ost->st->codec, 1);
2342             assert_avoptions(ost->opts);
2343             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2344                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2345                                              "It takes bits/s as argument, not kbits/s\n");
2346             extra_size += ost->st->codec->extradata_size;
2347         }
2348     }
2349
2350     /* open each decoder */
2351     for (i = 0; i < nb_input_streams; i++) {
2352         ist = &input_streams[i];
2353         if (ist->decoding_needed) {
2354             AVCodec *codec = ist->dec;
2355             if (!codec)
2356                 codec = avcodec_find_decoder(ist->st->codec->codec_id);
2357             if (!codec) {
2358                 snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
2359                         ist->st->codec->codec_id, ist->file_index, ist->st->index);
2360                 ret = AVERROR(EINVAL);
2361                 goto dump_format;
2362             }
2363
2364             /* update requested sample format for the decoder based on the
2365                corresponding encoder sample format */
2366             for (j = 0; j < nb_ostreams; j++) {
2367                 ost = ost_table[j];
2368                 if (ost->source_index == i) {
2369                     update_sample_fmt(ist->st->codec, codec, ost->st->codec);
2370                     break;
2371                 }
2372             }
2373
2374             if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2375                 snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
2376                         ist->file_index, ist->st->index);
2377                 ret = AVERROR(EINVAL);
2378                 goto dump_format;
2379             }
2380             assert_codec_experimental(ist->st->codec, 0);
2381             assert_avoptions(ost->opts);
2382             //if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2383             //    ist->st->codec->flags |= CODEC_FLAG_REPEAT_FIELD;
2384         }
2385     }
2386
2387     /* init pts */
2388     for (i = 0; i < nb_input_streams; i++) {
2389         AVStream *st;
2390         ist = &input_streams[i];
2391         st= ist->st;
2392         ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
2393         ist->next_pts = AV_NOPTS_VALUE;
2394         init_pts_correction(&ist->pts_ctx);
2395         ist->is_start = 1;
2396     }
2397
2398     /* open files and write file headers */
2399     for(i=0;i<nb_output_files;i++) {
2400         os = output_files[i];
2401         if (avformat_write_header(os, &output_opts[i]) < 0) {
2402             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2403             ret = AVERROR(EINVAL);
2404             goto dump_format;
2405         }
2406         assert_avoptions(output_opts[i]);
2407         if (strcmp(output_files[i]->oformat->name, "rtp")) {
2408             want_sdp = 0;
2409         }
2410     }
2411
2412  dump_format:
2413     /* dump the file output parameters - cannot be done before in case
2414        of stream copy */
2415     for(i=0;i<nb_output_files;i++) {
2416         av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2417     }
2418
2419     /* dump the stream mapping */
2420     if (verbose >= 0) {
2421         fprintf(stderr, "Stream mapping:\n");
2422         for(i=0;i<nb_ostreams;i++) {
2423             ost = ost_table[i];
2424             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2425                     input_streams[ost->source_index].file_index,
2426                     input_streams[ost->source_index].st->index,
2427                     ost->file_index,
2428                     ost->index);
2429             if (ost->sync_ist != &input_streams[ost->source_index])
2430                 fprintf(stderr, " [sync #%d.%d]",
2431                         ost->sync_ist->file_index,
2432                         ost->sync_ist->st->index);
2433             fprintf(stderr, "\n");
2434         }
2435     }
2436
2437     if (ret) {
2438         fprintf(stderr, "%s\n", error);
2439         goto fail;
2440     }
2441
2442     if (want_sdp) {
2443         print_sdp(output_files, nb_output_files);
2444     }
2445
2446     if (verbose >= 0)
2447         fprintf(stderr, "Press ctrl-c to stop encoding\n");
2448     term_init();
2449
2450     timer_start = av_gettime();
2451
2452     for(; received_sigterm == 0;) {
2453         int file_index, ist_index;
2454         AVPacket pkt;
2455         double ipts_min;
2456         double opts_min;
2457
2458     redo:
2459         ipts_min= 1e100;
2460         opts_min= 1e100;
2461
2462         /* select the stream that we must read now by looking at the
2463            smallest output pts */
2464         file_index = -1;
2465         for(i=0;i<nb_ostreams;i++) {
2466             double ipts, opts;
2467             ost = ost_table[i];
2468             os = output_files[ost->file_index];
2469             ist = &input_streams[ost->source_index];
2470             if(ist->is_past_recording_time || no_packet[ist->file_index])
2471                 continue;
2472                 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2473             ipts = (double)ist->pts;
2474             if (!input_files[ist->file_index].eof_reached){
2475                 if(ipts < ipts_min) {
2476                     ipts_min = ipts;
2477                     if(input_sync ) file_index = ist->file_index;
2478                 }
2479                 if(opts < opts_min) {
2480                     opts_min = opts;
2481                     if(!input_sync) file_index = ist->file_index;
2482                 }
2483             }
2484             if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
2485                 file_index= -1;
2486                 break;
2487             }
2488         }
2489         /* if none, if is finished */
2490         if (file_index < 0) {
2491             if(no_packet_count){
2492                 no_packet_count=0;
2493                 memset(no_packet, 0, sizeof(no_packet));
2494                 usleep(10000);
2495                 continue;
2496             }
2497             break;
2498         }
2499
2500         /* finish if limit size exhausted */
2501         if (limit_filesize != 0 && limit_filesize <= avio_tell(output_files[0]->pb))
2502             break;
2503
2504         /* read a frame from it and output it in the fifo */
2505         is = input_files[file_index].ctx;
2506         ret= av_read_frame(is, &pkt);
2507         if(ret == AVERROR(EAGAIN)){
2508             no_packet[file_index]=1;
2509             no_packet_count++;
2510             continue;
2511         }
2512         if (ret < 0) {
2513             input_files[file_index].eof_reached = 1;
2514             if (opt_shortest)
2515                 break;
2516             else
2517                 continue;
2518         }
2519
2520         no_packet_count=0;
2521         memset(no_packet, 0, sizeof(no_packet));
2522
2523         if (do_pkt_dump) {
2524             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2525                              is->streams[pkt.stream_index]);
2526         }
2527         /* the following test is needed in case new streams appear
2528            dynamically in stream : we ignore them */
2529         if (pkt.stream_index >= input_files[file_index].ctx->nb_streams)
2530             goto discard_packet;
2531         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2532         ist = &input_streams[ist_index];
2533         if (ist->discard)
2534             goto discard_packet;
2535
2536         if (pkt.dts != AV_NOPTS_VALUE)
2537             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2538         if (pkt.pts != AV_NOPTS_VALUE)
2539             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2540
2541         if (ist->ts_scale) {
2542             if(pkt.pts != AV_NOPTS_VALUE)
2543                 pkt.pts *= ist->ts_scale;
2544             if(pkt.dts != AV_NOPTS_VALUE)
2545                 pkt.dts *= ist->ts_scale;
2546         }
2547
2548 //        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);
2549         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2550             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2551             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2552             int64_t delta= pkt_dts - ist->next_pts;
2553             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2554                 input_files[ist->file_index].ts_offset -= delta;
2555                 if (verbose > 2)
2556                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2557                             delta, input_files[ist->file_index].ts_offset);
2558                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2559                 if(pkt.pts != AV_NOPTS_VALUE)
2560                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2561             }
2562         }
2563
2564         /* finish if recording time exhausted */
2565         if (recording_time != INT64_MAX &&
2566             av_compare_ts(pkt.pts, ist->st->time_base, recording_time + start_time, (AVRational){1, 1000000}) >= 0) {
2567             ist->is_past_recording_time = 1;
2568             goto discard_packet;
2569         }
2570
2571         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2572         if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
2573
2574             if (verbose >= 0)
2575                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2576                         ist->file_index, ist->st->index);
2577             if (exit_on_error)
2578                 exit_program(1);
2579             av_free_packet(&pkt);
2580             goto redo;
2581         }
2582
2583     discard_packet:
2584         av_free_packet(&pkt);
2585
2586         /* dump report by using the output first video and audio streams */
2587         print_report(output_files, ost_table, nb_ostreams, 0);
2588     }
2589
2590     /* at the end of stream, we must flush the decoder buffers */
2591     for (i = 0; i < nb_input_streams; i++) {
2592         ist = &input_streams[i];
2593         if (ist->decoding_needed) {
2594             output_packet(ist, i, ost_table, nb_ostreams, NULL);
2595         }
2596     }
2597
2598     term_exit();
2599
2600     /* write the trailer if needed and close file */
2601     for(i=0;i<nb_output_files;i++) {
2602         os = output_files[i];
2603         av_write_trailer(os);
2604     }
2605
2606     /* dump report by using the first video and audio streams */
2607     print_report(output_files, ost_table, nb_ostreams, 1);
2608
2609     /* close each encoder */
2610     for(i=0;i<nb_ostreams;i++) {
2611         ost = ost_table[i];
2612         if (ost->encoding_needed) {
2613             av_freep(&ost->st->codec->stats_in);
2614             avcodec_close(ost->st->codec);
2615         }
2616 #if CONFIG_AVFILTER
2617         avfilter_graph_free(&ost->graph);
2618 #endif
2619     }
2620
2621     /* close each decoder */
2622     for (i = 0; i < nb_input_streams; i++) {
2623         ist = &input_streams[i];
2624         if (ist->decoding_needed) {
2625             avcodec_close(ist->st->codec);
2626         }
2627     }
2628
2629     /* finished ! */
2630     ret = 0;
2631
2632  fail:
2633     av_freep(&bit_buffer);
2634
2635     if (ost_table) {
2636         for(i=0;i<nb_ostreams;i++) {
2637             ost = ost_table[i];
2638             if (ost) {
2639                 if (ost->st->stream_copy)
2640                     av_freep(&ost->st->codec->extradata);
2641                 if (ost->logfile) {
2642                     fclose(ost->logfile);
2643                     ost->logfile = NULL;
2644                 }
2645                 av_fifo_free(ost->fifo); /* works even if fifo is not
2646                                              initialized but set to zero */
2647                 av_freep(&ost->st->codec->subtitle_header);
2648                 av_free(ost->pict_tmp.data[0]);
2649                 av_free(ost->forced_kf_pts);
2650                 if (ost->video_resample)
2651                     sws_freeContext(ost->img_resample_ctx);
2652                 if (ost->resample)
2653                     audio_resample_close(ost->resample);
2654                 if (ost->reformat_ctx)
2655                     av_audio_convert_free(ost->reformat_ctx);
2656                 av_dict_free(&ost->opts);
2657                 av_free(ost);
2658             }
2659         }
2660         av_free(ost_table);
2661     }
2662     return ret;
2663 }
2664
2665 static int opt_format(const char *opt, const char *arg)
2666 {
2667     last_asked_format = arg;
2668     return 0;
2669 }
2670
2671 static int opt_video_rc_override_string(const char *opt, const char *arg)
2672 {
2673     video_rc_override_string = arg;
2674     return 0;
2675 }
2676
2677 static int opt_me_threshold(const char *opt, const char *arg)
2678 {
2679     me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2680     return 0;
2681 }
2682
2683 static int opt_verbose(const char *opt, const char *arg)
2684 {
2685     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2686     return 0;
2687 }
2688
2689 static int opt_frame_rate(const char *opt, const char *arg)
2690 {
2691     if (av_parse_video_rate(&frame_rate, arg) < 0) {
2692         fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2693         exit_program(1);
2694     }
2695     return 0;
2696 }
2697
2698 static int opt_frame_crop(const char *opt, const char *arg)
2699 {
2700     fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
2701     return AVERROR(EINVAL);
2702 }
2703
2704 static int opt_frame_size(const char *opt, const char *arg)
2705 {
2706     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2707         fprintf(stderr, "Incorrect frame size\n");
2708         return AVERROR(EINVAL);
2709     }
2710     return 0;
2711 }
2712
2713 static int opt_pad(const char *opt, const char *arg) {
2714     fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2715     return -1;
2716 }
2717
2718 static int opt_frame_pix_fmt(const char *opt, const char *arg)
2719 {
2720     if (strcmp(arg, "list")) {
2721         frame_pix_fmt = av_get_pix_fmt(arg);
2722         if (frame_pix_fmt == PIX_FMT_NONE) {
2723             fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2724             return AVERROR(EINVAL);
2725         }
2726     } else {
2727         show_pix_fmts();
2728         exit_program(0);
2729     }
2730     return 0;
2731 }
2732
2733 static int opt_frame_aspect_ratio(const char *opt, const char *arg)
2734 {
2735     int x = 0, y = 0;
2736     double ar = 0;
2737     const char *p;
2738     char *end;
2739
2740     p = strchr(arg, ':');
2741     if (p) {
2742         x = strtol(arg, &end, 10);
2743         if (end == p)
2744             y = strtol(end+1, &end, 10);
2745         if (x > 0 && y > 0)
2746             ar = (double)x / (double)y;
2747     } else
2748         ar = strtod(arg, NULL);
2749
2750     if (!ar) {
2751         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2752         return AVERROR(EINVAL);
2753     }
2754     frame_aspect_ratio = ar;
2755     return 0;
2756 }
2757
2758 static int opt_metadata(const char *opt, const char *arg)
2759 {
2760     char *mid= strchr(arg, '=');
2761
2762     if(!mid){
2763         fprintf(stderr, "Missing =\n");
2764         exit_program(1);
2765     }
2766     *mid++= 0;
2767
2768     av_dict_set(&metadata, arg, mid, 0);
2769
2770     return 0;
2771 }
2772
2773 static int opt_qscale(const char *opt, const char *arg)
2774 {
2775     video_qscale = parse_number_or_die(opt, arg, OPT_FLOAT, 0, 255);
2776     if (video_qscale == 0) {
2777         fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2778         return AVERROR(EINVAL);
2779     }
2780     return 0;
2781 }
2782
2783 static int opt_top_field_first(const char *opt, const char *arg)
2784 {
2785     top_field_first = parse_number_or_die(opt, arg, OPT_INT, 0, 1);
2786     return 0;
2787 }
2788
2789 static int opt_thread_count(const char *opt, const char *arg)
2790 {
2791     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2792 #if !HAVE_THREADS
2793     if (verbose >= 0)
2794         fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2795 #endif
2796     return 0;
2797 }
2798
2799 static int opt_audio_sample_fmt(const char *opt, const char *arg)
2800 {
2801     if (strcmp(arg, "list")) {
2802         audio_sample_fmt = av_get_sample_fmt(arg);
2803         if (audio_sample_fmt == AV_SAMPLE_FMT_NONE) {
2804             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg);
2805             return AVERROR(EINVAL);
2806         }
2807     } else {
2808         int i;
2809         char fmt_str[128];
2810         for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
2811             printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
2812         exit_program(0);
2813     }
2814     return 0;
2815 }
2816
2817 static int opt_audio_rate(const char *opt, const char *arg)
2818 {
2819     audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2820     return 0;
2821 }
2822
2823 static int opt_audio_channels(const char *opt, const char *arg)
2824 {
2825     audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2826     return 0;
2827 }
2828
2829 static int opt_codec(int *pstream_copy, char **pcodec_name,
2830                       int codec_type, const char *arg)
2831 {
2832     av_freep(pcodec_name);
2833     if (!strcmp(arg, "copy")) {
2834         *pstream_copy = 1;
2835     } else {
2836         *pcodec_name = av_strdup(arg);
2837     }
2838     return 0;
2839 }
2840
2841 static int opt_audio_codec(const char *opt, const char *arg)
2842 {
2843     return opt_codec(&audio_stream_copy, &audio_codec_name, AVMEDIA_TYPE_AUDIO, arg);
2844 }
2845
2846 static int opt_video_codec(const char *opt, const char *arg)
2847 {
2848     return opt_codec(&video_stream_copy, &video_codec_name, AVMEDIA_TYPE_VIDEO, arg);
2849 }
2850
2851 static int opt_subtitle_codec(const char *opt, const char *arg)
2852 {
2853     return opt_codec(&subtitle_stream_copy, &subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, arg);
2854 }
2855
2856 static int opt_data_codec(const char *opt, const char *arg)
2857 {
2858     return opt_codec(&data_stream_copy, &data_codec_name, AVMEDIA_TYPE_DATA, arg);
2859 }
2860
2861 static int opt_codec_tag(const char *opt, const char *arg)
2862 {
2863     char *tail;
2864     uint32_t *codec_tag;
2865
2866     codec_tag = !strcmp(opt, "atag") ? &audio_codec_tag :
2867                 !strcmp(opt, "vtag") ? &video_codec_tag :
2868                 !strcmp(opt, "stag") ? &subtitle_codec_tag : NULL;
2869     if (!codec_tag)
2870         return -1;
2871
2872     *codec_tag = strtol(arg, &tail, 0);
2873     if (!tail || *tail)
2874         *codec_tag = AV_RL32(arg);
2875
2876     return 0;
2877 }
2878
2879 static int opt_map(const char *opt, const char *arg)
2880 {
2881     StreamMap *m;
2882     char *p;
2883
2884     stream_maps = grow_array(stream_maps, sizeof(*stream_maps), &nb_stream_maps, nb_stream_maps + 1);
2885     m = &stream_maps[nb_stream_maps-1];
2886
2887     m->file_index = strtol(arg, &p, 0);
2888     if (*p)
2889         p++;
2890
2891     m->stream_index = strtol(p, &p, 0);
2892     if (*p) {
2893         p++;
2894         m->sync_file_index = strtol(p, &p, 0);
2895         if (*p)
2896             p++;
2897         m->sync_stream_index = strtol(p, &p, 0);
2898     } else {
2899         m->sync_file_index = m->file_index;
2900         m->sync_stream_index = m->stream_index;
2901     }
2902     return 0;
2903 }
2904
2905 static void parse_meta_type(char *arg, char *type, int *index)
2906 {
2907     if (*arg == ':') {
2908         *type = *(++arg);
2909         switch (*arg) {
2910         case 'g':
2911             break;
2912         case 's':
2913         case 'c':
2914         case 'p':
2915             if (*(++arg) == ':')
2916                 *index = strtol(++arg, NULL, 0);
2917             break;
2918         default:
2919             fprintf(stderr, "Invalid metadata type %c.\n", *arg);
2920             exit_program(1);
2921         }
2922     } else
2923         *type = 'g';
2924 }
2925
2926 static int opt_map_metadata(const char *opt, const char *arg)
2927 {
2928     MetadataMap *m, *m1;
2929     char *p;
2930
2931     meta_data_maps = grow_array(meta_data_maps, sizeof(*meta_data_maps),
2932                                 &nb_meta_data_maps, nb_meta_data_maps + 1);
2933
2934     m = &meta_data_maps[nb_meta_data_maps - 1][1];
2935     m->file = strtol(arg, &p, 0);
2936     parse_meta_type(p, &m->type, &m->index);
2937
2938     m1 = &meta_data_maps[nb_meta_data_maps - 1][0];
2939     if (p = strchr(opt, ':'))
2940         parse_meta_type(p, &m1->type, &m1->index);
2941     else
2942         m1->type = 'g';
2943
2944     if (m->type == 'g' || m1->type == 'g')
2945         metadata_global_autocopy = 0;
2946     if (m->type == 's' || m1->type == 's')
2947         metadata_streams_autocopy = 0;
2948     if (m->type == 'c' || m1->type == 'c')
2949         metadata_chapters_autocopy = 0;
2950
2951     return 0;
2952 }
2953
2954 static int opt_input_ts_scale(const char *opt, const char *arg)
2955 {
2956     unsigned int stream;
2957     double scale;
2958     char *p;
2959
2960     stream = strtol(arg, &p, 0);
2961     if (*p)
2962         p++;
2963     scale= strtod(p, &p);
2964
2965     ts_scale = grow_array(ts_scale, sizeof(*ts_scale), &nb_ts_scale, stream + 1);
2966     ts_scale[stream] = scale;
2967     return 0;
2968 }
2969
2970 static int opt_recording_time(const char *opt, const char *arg)
2971 {
2972     recording_time = parse_time_or_die(opt, arg, 1);
2973     return 0;
2974 }
2975
2976 static int opt_start_time(const char *opt, const char *arg)
2977 {
2978     start_time = parse_time_or_die(opt, arg, 1);
2979     return 0;
2980 }
2981
2982 static int opt_input_ts_offset(const char *opt, const char *arg)
2983 {
2984     input_ts_offset = parse_time_or_die(opt, arg, 1);
2985     return 0;
2986 }
2987
2988 static enum CodecID find_codec_or_die(const char *name, int type, int encoder)
2989 {
2990     const char *codec_string = encoder ? "encoder" : "decoder";
2991     AVCodec *codec;
2992
2993     if(!name)
2994         return CODEC_ID_NONE;
2995     codec = encoder ?
2996         avcodec_find_encoder_by_name(name) :
2997         avcodec_find_decoder_by_name(name);
2998     if(!codec) {
2999         fprintf(stderr, "Unknown %s '%s'\n", codec_string, name);
3000         exit_program(1);
3001     }
3002     if(codec->type != type) {
3003         fprintf(stderr, "Invalid %s type '%s'\n", codec_string, name);
3004         exit_program(1);
3005     }
3006     return codec->id;
3007 }
3008
3009 static int opt_input_file(const char *opt, const char *filename)
3010 {
3011     AVFormatContext *ic;
3012     AVInputFormat *file_iformat = NULL;
3013     int err, i, ret, rfps, rfps_base;
3014     int64_t timestamp;
3015     uint8_t buf[128];
3016     AVDictionary **opts;
3017     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
3018
3019     if (last_asked_format) {
3020         if (!(file_iformat = av_find_input_format(last_asked_format))) {
3021             fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
3022             exit_program(1);
3023         }
3024         last_asked_format = NULL;
3025     }
3026
3027     if (!strcmp(filename, "-"))
3028         filename = "pipe:";
3029
3030     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3031                     !strcmp(filename, "/dev/stdin");
3032
3033     /* get default parameters from command line */
3034     ic = avformat_alloc_context();
3035     if (!ic) {
3036         print_error(filename, AVERROR(ENOMEM));
3037         exit_program(1);
3038     }
3039     if (audio_sample_rate) {
3040         snprintf(buf, sizeof(buf), "%d", audio_sample_rate);
3041         av_dict_set(&format_opts, "sample_rate", buf, 0);
3042     }
3043     if (audio_channels) {
3044         snprintf(buf, sizeof(buf), "%d", audio_channels);
3045         av_dict_set(&format_opts, "channels", buf, 0);
3046     }
3047     if (frame_rate.num) {
3048         snprintf(buf, sizeof(buf), "%d/%d", frame_rate.num, frame_rate.den);
3049         av_dict_set(&format_opts, "framerate", buf, 0);
3050     }
3051     if (frame_width && frame_height) {
3052         snprintf(buf, sizeof(buf), "%dx%d", frame_width, frame_height);
3053         av_dict_set(&format_opts, "video_size", buf, 0);
3054     }
3055     if (frame_pix_fmt != PIX_FMT_NONE)
3056         av_dict_set(&format_opts, "pixel_format", av_get_pix_fmt_name(frame_pix_fmt), 0);
3057
3058     ic->video_codec_id   =
3059         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0);
3060     ic->audio_codec_id   =
3061         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0);
3062     ic->subtitle_codec_id=
3063         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0);
3064     ic->flags |= AVFMT_FLAG_NONBLOCK;
3065
3066     /* open the input file with generic libav function */
3067     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3068     if (err < 0) {
3069         print_error(filename, err);
3070         exit_program(1);
3071     }
3072     assert_avoptions(format_opts);
3073
3074     if(opt_programid) {
3075         int i, j;
3076         int found=0;
3077         for(i=0; i<ic->nb_streams; i++){
3078             ic->streams[i]->discard= AVDISCARD_ALL;
3079         }
3080         for(i=0; i<ic->nb_programs; i++){
3081             AVProgram *p= ic->programs[i];
3082             if(p->id != opt_programid){
3083                 p->discard = AVDISCARD_ALL;
3084             }else{
3085                 found=1;
3086                 for(j=0; j<p->nb_stream_indexes; j++){
3087                     ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
3088                 }
3089             }
3090         }
3091         if(!found){
3092             fprintf(stderr, "Specified program id not found\n");
3093             exit_program(1);
3094         }
3095         opt_programid=0;
3096     }
3097
3098     /* Set AVCodecContext options for avformat_find_stream_info */
3099     opts = setup_find_stream_info_opts(ic, codec_opts);
3100     orig_nb_streams = ic->nb_streams;
3101
3102     /* If not enough info to get the stream parameters, we decode the
3103        first frames to get it. (used in mpeg case for example) */
3104     ret = avformat_find_stream_info(ic, opts);
3105     if (ret < 0 && verbose >= 0) {
3106         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3107         av_close_input_file(ic);
3108         exit_program(1);
3109     }
3110
3111     timestamp = start_time;
3112     /* add the stream start time */
3113     if (ic->start_time != AV_NOPTS_VALUE)
3114         timestamp += ic->start_time;
3115
3116     /* if seeking requested, we execute it */
3117     if (start_time != 0) {
3118         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3119         if (ret < 0) {
3120             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3121                     filename, (double)timestamp / AV_TIME_BASE);
3122         }
3123         /* reset seek info */
3124         start_time = 0;
3125     }
3126
3127     /* update the current parameters so that they match the one of the input stream */
3128     for(i=0;i<ic->nb_streams;i++) {
3129         AVStream *st = ic->streams[i];
3130         AVCodecContext *dec = st->codec;
3131         InputStream *ist;
3132
3133         dec->thread_count = thread_count;
3134
3135         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3136         ist = &input_streams[nb_input_streams - 1];
3137         ist->st = st;
3138         ist->file_index = nb_input_files;
3139         ist->discard = 1;
3140         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, 0);
3141
3142         if (i < nb_ts_scale)
3143             ist->ts_scale = ts_scale[i];
3144
3145         switch (dec->codec_type) {
3146         case AVMEDIA_TYPE_AUDIO:
3147             ist->dec = avcodec_find_decoder_by_name(audio_codec_name);
3148             if(audio_disable)
3149                 st->discard= AVDISCARD_ALL;
3150             break;
3151         case AVMEDIA_TYPE_VIDEO:
3152             ist->dec = avcodec_find_decoder_by_name(video_codec_name);
3153             rfps      = ic->streams[i]->r_frame_rate.num;
3154             rfps_base = ic->streams[i]->r_frame_rate.den;
3155             if (dec->lowres) {
3156                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3157                 dec->height >>= dec->lowres;
3158                 dec->width  >>= dec->lowres;
3159             }
3160             if(me_threshold)
3161                 dec->debug |= FF_DEBUG_MV;
3162
3163             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3164
3165                 if (verbose >= 0)
3166                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3167                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3168
3169                     (float)rfps / rfps_base, rfps, rfps_base);
3170             }
3171
3172             if(video_disable)
3173                 st->discard= AVDISCARD_ALL;
3174             else if(video_discard)
3175                 st->discard= video_discard;
3176             break;
3177         case AVMEDIA_TYPE_DATA:
3178             break;
3179         case AVMEDIA_TYPE_SUBTITLE:
3180             ist->dec = avcodec_find_decoder_by_name(subtitle_codec_name);
3181             if(subtitle_disable)
3182                 st->discard = AVDISCARD_ALL;
3183             break;
3184         case AVMEDIA_TYPE_ATTACHMENT:
3185         case AVMEDIA_TYPE_UNKNOWN:
3186             break;
3187         default:
3188             abort();
3189         }
3190     }
3191
3192     /* dump the file content */
3193     if (verbose >= 0)
3194         av_dump_format(ic, nb_input_files, filename, 0);
3195
3196     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3197     input_files[nb_input_files - 1].ctx        = ic;
3198     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3199     input_files[nb_input_files - 1].ts_offset  = input_ts_offset - (copy_ts ? 0 : timestamp);
3200
3201     frame_rate    = (AVRational){0, 0};
3202     frame_pix_fmt = PIX_FMT_NONE;
3203     frame_height = 0;
3204     frame_width  = 0;
3205     audio_sample_rate = 0;
3206     audio_channels    = 0;
3207     audio_sample_fmt  = AV_SAMPLE_FMT_NONE;
3208     av_freep(&ts_scale);
3209     nb_ts_scale = 0;
3210
3211     for (i = 0; i < orig_nb_streams; i++)
3212         av_dict_free(&opts[i]);
3213     av_freep(&opts);
3214     av_freep(&video_codec_name);
3215     av_freep(&audio_codec_name);
3216     av_freep(&subtitle_codec_name);
3217     uninit_opts();
3218     init_opts();
3219     return 0;
3220 }
3221
3222 static void check_inputs(int *has_video_ptr,
3223                          int *has_audio_ptr,
3224                          int *has_subtitle_ptr,
3225                          int *has_data_ptr)
3226 {
3227     int has_video, has_audio, has_subtitle, has_data, i, j;
3228     AVFormatContext *ic;
3229
3230     has_video = 0;
3231     has_audio = 0;
3232     has_subtitle = 0;
3233     has_data = 0;
3234
3235     for(j=0;j<nb_input_files;j++) {
3236         ic = input_files[j].ctx;
3237         for(i=0;i<ic->nb_streams;i++) {
3238             AVCodecContext *enc = ic->streams[i]->codec;
3239             switch(enc->codec_type) {
3240             case AVMEDIA_TYPE_AUDIO:
3241                 has_audio = 1;
3242                 break;
3243             case AVMEDIA_TYPE_VIDEO:
3244                 has_video = 1;
3245                 break;
3246             case AVMEDIA_TYPE_SUBTITLE:
3247                 has_subtitle = 1;
3248                 break;
3249             case AVMEDIA_TYPE_DATA:
3250             case AVMEDIA_TYPE_ATTACHMENT:
3251             case AVMEDIA_TYPE_UNKNOWN:
3252                 has_data = 1;
3253                 break;
3254             default:
3255                 abort();
3256             }
3257         }
3258     }
3259     *has_video_ptr = has_video;
3260     *has_audio_ptr = has_audio;
3261     *has_subtitle_ptr = has_subtitle;
3262     *has_data_ptr = has_data;
3263 }
3264
3265 static void new_video_stream(AVFormatContext *oc, int file_idx)
3266 {
3267     AVStream *st;
3268     OutputStream *ost;
3269     AVCodecContext *video_enc;
3270     enum CodecID codec_id = CODEC_ID_NONE;
3271     AVCodec *codec= NULL;
3272
3273     if(!video_stream_copy){
3274         if (video_codec_name) {
3275             codec_id = find_codec_or_die(video_codec_name, AVMEDIA_TYPE_VIDEO, 1);
3276             codec = avcodec_find_encoder_by_name(video_codec_name);
3277         } else {
3278             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_VIDEO);
3279             codec = avcodec_find_encoder(codec_id);
3280         }
3281     }
3282
3283     ost = new_output_stream(oc, file_idx, codec);
3284     st  = ost->st;
3285     if (!video_stream_copy) {
3286         ost->frame_aspect_ratio = frame_aspect_ratio;
3287         frame_aspect_ratio = 0;
3288 #if CONFIG_AVFILTER
3289         ost->avfilter= vfilters;
3290         vfilters = NULL;
3291 #endif
3292     }
3293
3294     ost->bitstream_filters = video_bitstream_filters;
3295     video_bitstream_filters= NULL;
3296
3297     st->codec->thread_count= thread_count;
3298
3299     video_enc = st->codec;
3300
3301     if(video_codec_tag)
3302         video_enc->codec_tag= video_codec_tag;
3303
3304     if(oc->oformat->flags & AVFMT_GLOBALHEADER) {
3305         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3306     }
3307
3308     video_enc->codec_type = AVMEDIA_TYPE_VIDEO;
3309     if (video_stream_copy) {
3310         st->stream_copy = 1;
3311         video_enc->sample_aspect_ratio =
3312         st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3313     } else {
3314         const char *p;
3315         int i;
3316
3317         if (frame_rate.num)
3318             ost->frame_rate = frame_rate;
3319         video_enc->codec_id = codec_id;
3320
3321         video_enc->width = frame_width;
3322         video_enc->height = frame_height;
3323         video_enc->pix_fmt = frame_pix_fmt;
3324         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3325
3326         if (intra_only)
3327             video_enc->gop_size = 0;
3328         if (video_qscale || same_quality) {
3329             video_enc->flags |= CODEC_FLAG_QSCALE;
3330             video_enc->global_quality = FF_QP2LAMBDA * video_qscale;
3331         }
3332
3333         if(intra_matrix)
3334             video_enc->intra_matrix = intra_matrix;
3335         if(inter_matrix)
3336             video_enc->inter_matrix = inter_matrix;
3337
3338         p= video_rc_override_string;
3339         for(i=0; p; i++){
3340             int start, end, q;
3341             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3342             if(e!=3){
3343                 fprintf(stderr, "error parsing rc_override\n");
3344                 exit_program(1);
3345             }
3346             video_enc->rc_override=
3347                 av_realloc(video_enc->rc_override,
3348                            sizeof(RcOverride)*(i+1));
3349             video_enc->rc_override[i].start_frame= start;
3350             video_enc->rc_override[i].end_frame  = end;
3351             if(q>0){
3352                 video_enc->rc_override[i].qscale= q;
3353                 video_enc->rc_override[i].quality_factor= 1.0;
3354             }
3355             else{
3356                 video_enc->rc_override[i].qscale= 0;
3357                 video_enc->rc_override[i].quality_factor= -q/100.0;
3358             }
3359             p= strchr(p, '/');
3360             if(p) p++;
3361         }
3362         video_enc->rc_override_count=i;
3363         if (!video_enc->rc_initial_buffer_occupancy)
3364             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3365         video_enc->me_threshold= me_threshold;
3366         video_enc->intra_dc_precision= intra_dc_precision - 8;
3367
3368         if (do_psnr)
3369             video_enc->flags|= CODEC_FLAG_PSNR;
3370
3371         /* two pass mode */
3372         if (do_pass) {
3373             if (do_pass == 1) {
3374                 video_enc->flags |= CODEC_FLAG_PASS1;
3375             } else {
3376                 video_enc->flags |= CODEC_FLAG_PASS2;
3377             }
3378         }
3379
3380         if (forced_key_frames)
3381             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3382     }
3383     if (video_language) {
3384         av_dict_set(&st->metadata, "language", video_language, 0);
3385         av_freep(&video_language);
3386     }
3387
3388     /* reset some key parameters */
3389     video_disable = 0;
3390     av_freep(&video_codec_name);
3391     av_freep(&forced_key_frames);
3392     video_stream_copy = 0;
3393     frame_pix_fmt = PIX_FMT_NONE;
3394 }
3395
3396 static void new_audio_stream(AVFormatContext *oc, int file_idx)
3397 {
3398     AVStream *st;
3399     OutputStream *ost;
3400     AVCodec *codec= NULL;
3401     AVCodecContext *audio_enc;
3402     enum CodecID codec_id = CODEC_ID_NONE;
3403
3404     if(!audio_stream_copy){
3405         if (audio_codec_name) {
3406             codec_id = find_codec_or_die(audio_codec_name, AVMEDIA_TYPE_AUDIO, 1);
3407             codec = avcodec_find_encoder_by_name(audio_codec_name);
3408         } else {
3409             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_AUDIO);
3410             codec = avcodec_find_encoder(codec_id);
3411         }
3412     }
3413     ost = new_output_stream(oc, file_idx, codec);
3414     st  = ost->st;
3415
3416     ost->bitstream_filters = audio_bitstream_filters;
3417     audio_bitstream_filters= NULL;
3418
3419     st->codec->thread_count= thread_count;
3420
3421     audio_enc = st->codec;
3422     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3423
3424     if(audio_codec_tag)
3425         audio_enc->codec_tag= audio_codec_tag;
3426
3427     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3428         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3429     }
3430     if (audio_stream_copy) {
3431         st->stream_copy = 1;
3432     } else {
3433         audio_enc->codec_id = codec_id;
3434
3435         if (audio_qscale > QSCALE_NONE) {
3436             audio_enc->flags |= CODEC_FLAG_QSCALE;
3437             audio_enc->global_quality = FF_QP2LAMBDA * audio_qscale;
3438         }
3439         if (audio_channels)
3440             audio_enc->channels = audio_channels;
3441         if (audio_sample_fmt != AV_SAMPLE_FMT_NONE)
3442             audio_enc->sample_fmt = audio_sample_fmt;
3443         if (audio_sample_rate)
3444             audio_enc->sample_rate = audio_sample_rate;
3445     }
3446     if (audio_language) {
3447         av_dict_set(&st->metadata, "language", audio_language, 0);
3448         av_freep(&audio_language);
3449     }
3450
3451     /* reset some key parameters */
3452     audio_disable = 0;
3453     av_freep(&audio_codec_name);
3454     audio_stream_copy = 0;
3455 }
3456
3457 static void new_data_stream(AVFormatContext *oc, int file_idx)
3458 {
3459     AVStream *st;
3460     OutputStream *ost;
3461     AVCodecContext *data_enc;
3462
3463     ost = new_output_stream(oc, file_idx, NULL);
3464     st  = ost->st;
3465     data_enc = st->codec;
3466     if (!data_stream_copy) {
3467         fprintf(stderr, "Data stream encoding not supported yet (only streamcopy)\n");
3468         exit_program(1);
3469     }
3470
3471     data_enc->codec_type = AVMEDIA_TYPE_DATA;
3472
3473     if (data_codec_tag)
3474         data_enc->codec_tag= data_codec_tag;
3475
3476     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3477         data_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3478     }
3479     if (data_stream_copy) {
3480         st->stream_copy = 1;
3481     }
3482
3483     data_disable = 0;
3484     av_freep(&data_codec_name);
3485     data_stream_copy = 0;
3486 }
3487
3488 static void new_subtitle_stream(AVFormatContext *oc, int file_idx)
3489 {
3490     AVStream *st;
3491     OutputStream *ost;
3492     AVCodec *codec=NULL;
3493     AVCodecContext *subtitle_enc;
3494     enum CodecID codec_id = CODEC_ID_NONE;
3495
3496     if(!subtitle_stream_copy){
3497         if (subtitle_codec_name) {
3498             codec_id = find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 1);
3499             codec = avcodec_find_encoder_by_name(subtitle_codec_name);
3500         } else {
3501             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_SUBTITLE);
3502             codec = avcodec_find_encoder(codec_id);
3503         }
3504     }
3505     ost = new_output_stream(oc, file_idx, codec);
3506     st  = ost->st;
3507     subtitle_enc = st->codec;
3508
3509     ost->bitstream_filters = subtitle_bitstream_filters;
3510     subtitle_bitstream_filters= NULL;
3511
3512     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3513
3514     if(subtitle_codec_tag)
3515         subtitle_enc->codec_tag= subtitle_codec_tag;
3516
3517     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3518         subtitle_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3519     }
3520     if (subtitle_stream_copy) {
3521         st->stream_copy = 1;
3522     } else {
3523         subtitle_enc->codec_id = codec_id;
3524     }
3525
3526     if (subtitle_language) {
3527         av_dict_set(&st->metadata, "language", subtitle_language, 0);
3528         av_freep(&subtitle_language);
3529     }
3530
3531     subtitle_disable = 0;
3532     av_freep(&subtitle_codec_name);
3533     subtitle_stream_copy = 0;
3534 }
3535
3536 static int opt_new_stream(const char *opt, const char *arg)
3537 {
3538     AVFormatContext *oc;
3539     int file_idx = nb_output_files - 1;
3540     if (nb_output_files <= 0) {
3541         fprintf(stderr, "At least one output file must be specified\n");
3542         exit_program(1);
3543     }
3544     oc = output_files[file_idx];
3545
3546     if      (!strcmp(opt, "newvideo"   )) new_video_stream   (oc, file_idx);
3547     else if (!strcmp(opt, "newaudio"   )) new_audio_stream   (oc, file_idx);
3548     else if (!strcmp(opt, "newsubtitle")) new_subtitle_stream(oc, file_idx);
3549     else if (!strcmp(opt, "newdata"    )) new_data_stream    (oc, file_idx);
3550     else av_assert0(0);
3551     return 0;
3552 }
3553
3554 /* arg format is "output-stream-index:streamid-value". */
3555 static int opt_streamid(const char *opt, const char *arg)
3556 {
3557     int idx;
3558     char *p;
3559     char idx_str[16];
3560
3561     av_strlcpy(idx_str, arg, sizeof(idx_str));
3562     p = strchr(idx_str, ':');
3563     if (!p) {
3564         fprintf(stderr,
3565                 "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3566                 arg, opt);
3567         exit_program(1);
3568     }
3569     *p++ = '\0';
3570     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, INT_MAX);
3571     streamid_map = grow_array(streamid_map, sizeof(*streamid_map), &nb_streamid_map, idx+1);
3572     streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3573     return 0;
3574 }
3575
3576 static void opt_output_file(const char *filename)
3577 {
3578     AVFormatContext *oc;
3579     int i, err, use_video, use_audio, use_subtitle, use_data;
3580     int input_has_video, input_has_audio, input_has_subtitle, input_has_data;
3581     AVOutputFormat *file_oformat;
3582
3583     if (!strcmp(filename, "-"))
3584         filename = "pipe:";
3585
3586     oc = avformat_alloc_context();
3587     if (!oc) {
3588         print_error(filename, AVERROR(ENOMEM));
3589         exit_program(1);
3590     }
3591
3592     if (last_asked_format) {
3593         file_oformat = av_guess_format(last_asked_format, NULL, NULL);
3594         if (!file_oformat) {
3595             fprintf(stderr, "Requested output format '%s' is not a suitable output format\n", last_asked_format);
3596             exit_program(1);
3597         }
3598         last_asked_format = NULL;
3599     } else {
3600         file_oformat = av_guess_format(NULL, filename, NULL);
3601         if (!file_oformat) {
3602             fprintf(stderr, "Unable to find a suitable output format for '%s'\n",
3603                     filename);
3604             exit_program(1);
3605         }
3606     }
3607
3608     oc->oformat = file_oformat;
3609     av_strlcpy(oc->filename, filename, sizeof(oc->filename));
3610
3611     if (!strcmp(file_oformat->name, "ffm") &&
3612         av_strstart(filename, "http:", NULL)) {
3613         /* special case for files sent to avserver: we get the stream
3614            parameters from avserver */
3615         int err = read_avserver_streams(oc, filename);
3616         if (err < 0) {
3617             print_error(filename, err);
3618             exit_program(1);
3619         }
3620     } else {
3621         use_video = file_oformat->video_codec != CODEC_ID_NONE || video_stream_copy || video_codec_name;
3622         use_audio = file_oformat->audio_codec != CODEC_ID_NONE || audio_stream_copy || audio_codec_name;
3623         use_subtitle = file_oformat->subtitle_codec != CODEC_ID_NONE || subtitle_stream_copy || subtitle_codec_name;
3624         use_data = data_stream_copy ||  data_codec_name; /* XXX once generic data codec will be available add a ->data_codec reference and use it here */
3625
3626         /* disable if no corresponding type found */
3627         check_inputs(&input_has_video,
3628                      &input_has_audio,
3629                      &input_has_subtitle,
3630                      &input_has_data);
3631
3632         if (!input_has_video)
3633             use_video = 0;
3634         if (!input_has_audio)
3635             use_audio = 0;
3636         if (!input_has_subtitle)
3637             use_subtitle = 0;
3638         if (!input_has_data)
3639             use_data = 0;
3640
3641         /* manual disable */
3642         if (audio_disable)    use_audio    = 0;
3643         if (video_disable)    use_video    = 0;
3644         if (subtitle_disable) use_subtitle = 0;
3645         if (data_disable)     use_data     = 0;
3646
3647         if (use_video)    new_video_stream(oc, nb_output_files);
3648         if (use_audio)    new_audio_stream(oc, nb_output_files);
3649         if (use_subtitle) new_subtitle_stream(oc, nb_output_files);
3650         if (use_data)     new_data_stream(oc, nb_output_files);