avconv: remove -intra option.
[ffmpeg.git] / avconv.c
1 /*
2  * avconv main
3  * Copyright (c) 2000-2011 The libav developers.
4  *
5  * This file is part of Libav.
6  *
7  * Libav is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * Libav is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with Libav; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21
22 #include "config.h"
23 #include <ctype.h>
24 #include <string.h>
25 #include <math.h>
26 #include <stdlib.h>
27 #include <errno.h>
28 #include <signal.h>
29 #include <limits.h>
30 #include <unistd.h>
31 #include "libavformat/avformat.h"
32 #include "libavdevice/avdevice.h"
33 #include "libswscale/swscale.h"
34 #include "libavutil/opt.h"
35 #include "libavcodec/audioconvert.h"
36 #include "libavutil/audioconvert.h"
37 #include "libavutil/parseutils.h"
38 #include "libavutil/samplefmt.h"
39 #include "libavutil/colorspace.h"
40 #include "libavutil/fifo.h"
41 #include "libavutil/intreadwrite.h"
42 #include "libavutil/dict.h"
43 #include "libavutil/mathematics.h"
44 #include "libavutil/pixdesc.h"
45 #include "libavutil/avstring.h"
46 #include "libavutil/libm.h"
47 #include "libavformat/os_support.h"
48
49 #if CONFIG_AVFILTER
50 # include "libavfilter/avfilter.h"
51 # include "libavfilter/avfiltergraph.h"
52 # include "libavfilter/vsrc_buffer.h"
53 #endif
54
55 #if HAVE_SYS_RESOURCE_H
56 #include <sys/types.h>
57 #include <sys/time.h>
58 #include <sys/resource.h>
59 #elif HAVE_GETPROCESSTIMES
60 #include <windows.h>
61 #endif
62 #if HAVE_GETPROCESSMEMORYINFO
63 #include <windows.h>
64 #include <psapi.h>
65 #endif
66
67 #if HAVE_SYS_SELECT_H
68 #include <sys/select.h>
69 #endif
70
71 #include <time.h>
72
73 #include "cmdutils.h"
74
75 #include "libavutil/avassert.h"
76
77 const char program_name[] = "avconv";
78 const int program_birth_year = 2000;
79
80 /* select an input stream for an output stream */
81 typedef struct StreamMap {
82     int disabled;           /** 1 is this mapping is disabled by a negative map */
83     int file_index;
84     int stream_index;
85     int sync_file_index;
86     int sync_stream_index;
87 } StreamMap;
88
89 /**
90  * select an input file for an output file
91  */
92 typedef struct MetadataMap {
93     int  file;      //< file index
94     char type;      //< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
95     int  index;     //< stream/chapter/program number
96 } MetadataMap;
97
98 static const OptionDef options[];
99
100 static const char *last_asked_format = NULL;
101 static AVDictionary *ts_scale;
102
103 static StreamMap *stream_maps = NULL;
104 static int nb_stream_maps;
105
106 static AVDictionary *codec_names;
107
108 /* first item specifies output metadata, second is input */
109 static MetadataMap (*meta_data_maps)[2] = NULL;
110 static int nb_meta_data_maps;
111 static int metadata_global_autocopy   = 1;
112 static int metadata_streams_autocopy  = 1;
113 static int metadata_chapters_autocopy = 1;
114
115 static int chapters_input_file = INT_MAX;
116
117 /* indexed by output file stream index */
118 static int *streamid_map = NULL;
119 static int nb_streamid_map = 0;
120
121 static int frame_width  = 0;
122 static int frame_height = 0;
123 static float frame_aspect_ratio = 0;
124 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
125 static enum AVSampleFormat audio_sample_fmt = AV_SAMPLE_FMT_NONE;
126 static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
127 static AVRational frame_rate;
128 static float video_qscale = 0;
129 static uint16_t *intra_matrix = NULL;
130 static uint16_t *inter_matrix = NULL;
131 static const char *video_rc_override_string=NULL;
132 static int video_disable = 0;
133 static int video_discard = 0;
134 static unsigned int video_codec_tag = 0;
135 static char *video_language = NULL;
136 static int same_quant = 0;
137 static int do_deinterlace = 0;
138 static int top_field_first = -1;
139 static int me_threshold = 0;
140 static int intra_dc_precision = 8;
141 static int qp_hist = 0;
142 #if CONFIG_AVFILTER
143 static char *vfilters = NULL;
144 #endif
145
146 static int audio_sample_rate = 0;
147 #define QSCALE_NONE -99999
148 static float audio_qscale = QSCALE_NONE;
149 static int audio_disable = 0;
150 static int audio_channels = 0;
151 static unsigned int audio_codec_tag = 0;
152 static char *audio_language = NULL;
153
154 static int subtitle_disable = 0;
155 static char *subtitle_language = NULL;
156 static unsigned int subtitle_codec_tag = 0;
157
158 static int data_disable = 0;
159 static unsigned int data_codec_tag = 0;
160
161 static float mux_preload= 0.5;
162 static float mux_max_delay= 0.7;
163
164 static int64_t recording_time = INT64_MAX;
165 static int64_t start_time = 0;
166 static int64_t input_ts_offset = 0;
167 static int file_overwrite = 0;
168 static AVDictionary *metadata;
169 static int do_benchmark = 0;
170 static int do_hex_dump = 0;
171 static int do_pkt_dump = 0;
172 static int do_psnr = 0;
173 static int do_pass = 0;
174 static char *pass_logfilename_prefix = NULL;
175 static int video_sync_method= -1;
176 static int audio_sync_method= 0;
177 static float audio_drift_threshold= 0.1;
178 static int copy_ts= 0;
179 static int copy_tb;
180 static int opt_shortest = 0;
181 static char *vstats_filename;
182 static FILE *vstats_file;
183 static int opt_programid = 0;
184 static int copy_initial_nonkeyframes = 0;
185
186 static int rate_emu = 0;
187
188 static int audio_volume = 256;
189
190 static int exit_on_error = 0;
191 static int using_stdin = 0;
192 static int verbose = 1;
193 static int thread_count= 1;
194 static int64_t video_size = 0;
195 static int64_t audio_size = 0;
196 static int64_t extra_size = 0;
197 static int nb_frames_dup = 0;
198 static int nb_frames_drop = 0;
199 static int input_sync;
200 static uint64_t limit_filesize = 0;
201 static int force_fps = 0;
202 static char *forced_key_frames = NULL;
203
204 static float dts_delta_threshold = 10;
205
206 static uint8_t *audio_buf;
207 static uint8_t *audio_out;
208 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
209
210 static short *samples;
211
212 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
213 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
214 static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL;
215
216 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
217
218 typedef struct InputStream {
219     int file_index;
220     AVStream *st;
221     int discard;             /* true if stream data should be discarded */
222     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
223     AVCodec *dec;
224
225     int64_t       start;     /* time when read started */
226     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
227                                 is not defined */
228     int64_t       pts;       /* current pts */
229     PtsCorrectionContext pts_ctx;
230     double ts_scale;
231     int is_start;            /* is 1 at the start and after a discontinuity */
232     int showed_multi_packet_warning;
233     AVDictionary *opts;
234 } InputStream;
235
236 typedef struct InputFile {
237     AVFormatContext *ctx;
238     int eof_reached;      /* true if eof reached */
239     int ist_index;        /* index of first stream in ist_table */
240     int buffer_size;      /* current total buffer size */
241     int64_t ts_offset;
242 } InputFile;
243
244 typedef struct OutputStream {
245     int file_index;          /* file index */
246     int index;               /* stream index in the output file */
247     int source_index;        /* InputStream index */
248     AVStream *st;            /* stream in the output file */
249     int encoding_needed;     /* true if encoding needed for this stream */
250     int frame_number;
251     /* input pts and corresponding output pts
252        for A/V sync */
253     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
254     struct InputStream *sync_ist; /* input stream to sync against */
255     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
256     AVBitStreamFilterContext *bitstream_filters;
257     AVCodec *enc;
258
259     /* video only */
260     int video_resample;
261     AVFrame pict_tmp;      /* temporary image for resampling */
262     struct SwsContext *img_resample_ctx; /* for image resampling */
263     int resample_height;
264     int resample_width;
265     int resample_pix_fmt;
266     AVRational frame_rate;
267
268     float frame_aspect_ratio;
269
270     /* forced key frames */
271     int64_t *forced_kf_pts;
272     int forced_kf_count;
273     int forced_kf_index;
274
275     /* audio only */
276     int audio_resample;
277     ReSampleContext *resample; /* for audio resampling */
278     int resample_sample_fmt;
279     int resample_channels;
280     int resample_sample_rate;
281     int reformat_pair;
282     AVAudioConvert *reformat_ctx;
283     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
284     FILE *logfile;
285
286 #if CONFIG_AVFILTER
287     AVFilterContext *output_video_filter;
288     AVFilterContext *input_video_filter;
289     AVFilterBufferRef *picref;
290     char *avfilter;
291     AVFilterGraph *graph;
292 #endif
293
294    int sws_flags;
295    AVDictionary *opts;
296    int is_past_recording_time;
297 } OutputStream;
298
299
300 typedef struct OutputFile {
301     AVFormatContext *ctx;
302     AVDictionary *opts;
303     int ost_index;       /* index of the first stream in output_streams */
304     int64_t recording_time; /* desired length of the resulting file in microseconds */
305     int64_t start_time;     /* start time in microseconds */
306 } OutputFile;
307
308 static InputStream *input_streams = NULL;
309 static int         nb_input_streams = 0;
310 static InputFile   *input_files   = NULL;
311 static int         nb_input_files   = 0;
312
313 static OutputStream *output_streams = NULL;
314 static int        nb_output_streams = 0;
315 static OutputFile   *output_files   = NULL;
316 static int        nb_output_files   = 0;
317
318 #if CONFIG_AVFILTER
319
320 static int configure_video_filters(InputStream *ist, OutputStream *ost)
321 {
322     AVFilterContext *last_filter, *filter;
323     /** filter graph containing all filters including input & output */
324     AVCodecContext *codec = ost->st->codec;
325     AVCodecContext *icodec = ist->st->codec;
326     FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
327     AVRational sample_aspect_ratio;
328     char args[255];
329     int ret;
330
331     ost->graph = avfilter_graph_alloc();
332
333     if (ist->st->sample_aspect_ratio.num){
334         sample_aspect_ratio = ist->st->sample_aspect_ratio;
335     }else
336         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
337
338     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
339              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
340              sample_aspect_ratio.num, sample_aspect_ratio.den);
341
342     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
343                                        "src", args, NULL, ost->graph);
344     if (ret < 0)
345         return ret;
346     ret = avfilter_graph_create_filter(&ost->output_video_filter, &ffsink,
347                                        "out", NULL, &ffsink_ctx, ost->graph);
348     if (ret < 0)
349         return ret;
350     last_filter = ost->input_video_filter;
351
352     if (codec->width  != icodec->width || codec->height != icodec->height) {
353         snprintf(args, 255, "%d:%d:flags=0x%X",
354                  codec->width,
355                  codec->height,
356                  ost->sws_flags);
357         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
358                                                 NULL, args, NULL, ost->graph)) < 0)
359             return ret;
360         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
361             return ret;
362         last_filter = filter;
363     }
364
365     snprintf(args, sizeof(args), "flags=0x%X", ost->sws_flags);
366     ost->graph->scale_sws_opts = av_strdup(args);
367
368     if (ost->avfilter) {
369         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
370         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
371
372         outputs->name    = av_strdup("in");
373         outputs->filter_ctx = last_filter;
374         outputs->pad_idx = 0;
375         outputs->next    = NULL;
376
377         inputs->name    = av_strdup("out");
378         inputs->filter_ctx = ost->output_video_filter;
379         inputs->pad_idx = 0;
380         inputs->next    = NULL;
381
382         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, inputs, outputs, NULL)) < 0)
383             return ret;
384         av_freep(&ost->avfilter);
385     } else {
386         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
387             return ret;
388     }
389
390     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
391         return ret;
392
393     codec->width  = ost->output_video_filter->inputs[0]->w;
394     codec->height = ost->output_video_filter->inputs[0]->h;
395     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
396         ost->frame_aspect_ratio ? // overriden by the -aspect cli option
397         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
398         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
399
400     return 0;
401 }
402 #endif /* CONFIG_AVFILTER */
403
404 static void term_exit(void)
405 {
406     av_log(NULL, AV_LOG_QUIET, "");
407 }
408
409 static volatile int received_sigterm = 0;
410 static volatile int received_nb_signals = 0;
411
412 static void
413 sigterm_handler(int sig)
414 {
415     received_sigterm = sig;
416     received_nb_signals++;
417     term_exit();
418 }
419
420 static void term_init(void)
421 {
422     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
423     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
424 #ifdef SIGXCPU
425     signal(SIGXCPU, sigterm_handler);
426 #endif
427 }
428
429 static int decode_interrupt_cb(void)
430 {
431     return received_nb_signals > 1;
432 }
433
434 static int exit_program(int ret)
435 {
436     int i;
437
438     /* close files */
439     for(i=0;i<nb_output_files;i++) {
440         AVFormatContext *s = output_files[i].ctx;
441         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
442             avio_close(s->pb);
443         avformat_free_context(s);
444         av_dict_free(&output_files[i].opts);
445     }
446     for(i=0;i<nb_input_files;i++) {
447         av_close_input_file(input_files[i].ctx);
448     }
449     for (i = 0; i < nb_input_streams; i++)
450         av_dict_free(&input_streams[i].opts);
451
452     av_free(intra_matrix);
453     av_free(inter_matrix);
454
455     if (vstats_file)
456         fclose(vstats_file);
457     av_free(vstats_filename);
458
459     av_free(meta_data_maps);
460
461     av_freep(&input_streams);
462     av_freep(&input_files);
463     av_freep(&output_streams);
464     av_freep(&output_files);
465
466     uninit_opts();
467     av_free(audio_buf);
468     av_free(audio_out);
469     allocated_audio_buf_size= allocated_audio_out_size= 0;
470     av_free(samples);
471
472 #if CONFIG_AVFILTER
473     avfilter_uninit();
474 #endif
475
476     if (received_sigterm) {
477         fprintf(stderr,
478             "Received signal %d: terminating.\n",
479             (int) received_sigterm);
480         exit (255);
481     }
482
483     exit(ret); /* not all OS-es handle main() return value */
484     return ret;
485 }
486
487 static void assert_avoptions(AVDictionary *m)
488 {
489     AVDictionaryEntry *t;
490     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
491         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
492         exit_program(1);
493     }
494 }
495
496 static void assert_codec_experimental(AVCodecContext *c, int encoder)
497 {
498     const char *codec_string = encoder ? "encoder" : "decoder";
499     AVCodec *codec;
500     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
501         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
502         av_log(NULL, AV_LOG_ERROR, "%s '%s' is experimental and might produce bad "
503                 "results.\nAdd '-strict experimental' if you want to use it.\n",
504                 codec_string, c->codec->name);
505         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
506         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
507             av_log(NULL, AV_LOG_ERROR, "Or use the non experimental %s '%s'.\n",
508                    codec_string, codec->name);
509         exit_program(1);
510     }
511 }
512
513 /* similar to ff_dynarray_add() and av_fast_realloc() */
514 static void *grow_array(void *array, int elem_size, int *size, int new_size)
515 {
516     if (new_size >= INT_MAX / elem_size) {
517         fprintf(stderr, "Array too big.\n");
518         exit_program(1);
519     }
520     if (*size < new_size) {
521         uint8_t *tmp = av_realloc(array, new_size*elem_size);
522         if (!tmp) {
523             fprintf(stderr, "Could not alloc buffer.\n");
524             exit_program(1);
525         }
526         memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
527         *size = new_size;
528         return tmp;
529     }
530     return array;
531 }
532
533 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
534 {
535     if(codec && codec->sample_fmts){
536         const enum AVSampleFormat *p= codec->sample_fmts;
537         for(; *p!=-1; p++){
538             if(*p == st->codec->sample_fmt)
539                 break;
540         }
541         if (*p == -1) {
542             av_log(NULL, AV_LOG_WARNING,
543                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
544                    av_get_sample_fmt_name(st->codec->sample_fmt),
545                    codec->name,
546                    av_get_sample_fmt_name(codec->sample_fmts[0]));
547             st->codec->sample_fmt = codec->sample_fmts[0];
548         }
549     }
550 }
551
552 /**
553  * Update the requested input sample format based on the output sample format.
554  * This is currently only used to request float output from decoders which
555  * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
556  * Ideally this will be removed in the future when decoders do not do format
557  * conversion and only output in their native format.
558  */
559 static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
560                               AVCodecContext *enc)
561 {
562     /* if sample formats match or a decoder sample format has already been
563        requested, just return */
564     if (enc->sample_fmt == dec->sample_fmt ||
565         dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
566         return;
567
568     /* if decoder supports more than one output format */
569     if (dec_codec && dec_codec->sample_fmts &&
570         dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
571         dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
572         const enum AVSampleFormat *p;
573         int min_dec = -1, min_inc = -1;
574
575         /* find a matching sample format in the encoder */
576         for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
577             if (*p == enc->sample_fmt) {
578                 dec->request_sample_fmt = *p;
579                 return;
580             } else if (*p > enc->sample_fmt) {
581                 min_inc = FFMIN(min_inc, *p - enc->sample_fmt);
582             } else
583                 min_dec = FFMIN(min_dec, enc->sample_fmt - *p);
584         }
585
586         /* if none match, provide the one that matches quality closest */
587         dec->request_sample_fmt = min_inc > 0 ? enc->sample_fmt + min_inc :
588                                   enc->sample_fmt - min_dec;
589     }
590 }
591
592 static void choose_sample_rate(AVStream *st, AVCodec *codec)
593 {
594     if(codec && codec->supported_samplerates){
595         const int *p= codec->supported_samplerates;
596         int best=0;
597         int best_dist=INT_MAX;
598         for(; *p; p++){
599             int dist= abs(st->codec->sample_rate - *p);
600             if(dist < best_dist){
601                 best_dist= dist;
602                 best= *p;
603             }
604         }
605         if(best_dist){
606             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
607         }
608         st->codec->sample_rate= best;
609     }
610 }
611
612 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
613 {
614     if(codec && codec->pix_fmts){
615         const enum PixelFormat *p= codec->pix_fmts;
616         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
617             if(st->codec->codec_id==CODEC_ID_MJPEG){
618                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
619             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
620                 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};
621             }
622         }
623         for(; *p!=-1; p++){
624             if(*p == st->codec->pix_fmt)
625                 break;
626         }
627         if (*p == -1) {
628             if(st->codec->pix_fmt != PIX_FMT_NONE)
629                 av_log(NULL, AV_LOG_WARNING,
630                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
631                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
632                         codec->name,
633                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
634             st->codec->pix_fmt = codec->pix_fmts[0];
635         }
636     }
637 }
638
639 static double
640 get_sync_ipts(const OutputStream *ost)
641 {
642     const InputStream *ist = ost->sync_ist;
643     OutputFile *of = &output_files[ost->file_index];
644     return (double)(ist->pts - of->start_time)/AV_TIME_BASE;
645 }
646
647 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
648     int ret;
649
650     while(bsfc){
651         AVPacket new_pkt= *pkt;
652         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
653                                           &new_pkt.data, &new_pkt.size,
654                                           pkt->data, pkt->size,
655                                           pkt->flags & AV_PKT_FLAG_KEY);
656         if(a>0){
657             av_free_packet(pkt);
658             new_pkt.destruct= av_destruct_packet;
659         } else if(a<0){
660             fprintf(stderr, "%s failed for stream %d, codec %s",
661                     bsfc->filter->name, pkt->stream_index,
662                     avctx->codec ? avctx->codec->name : "copy");
663             print_error("", a);
664             if (exit_on_error)
665                 exit_program(1);
666         }
667         *pkt= new_pkt;
668
669         bsfc= bsfc->next;
670     }
671
672     ret= av_interleaved_write_frame(s, pkt);
673     if(ret < 0){
674         print_error("av_interleaved_write_frame()", ret);
675         exit_program(1);
676     }
677 }
678
679 static void do_audio_out(AVFormatContext *s,
680                          OutputStream *ost,
681                          InputStream *ist,
682                          unsigned char *buf, int size)
683 {
684     uint8_t *buftmp;
685     int64_t audio_out_size, audio_buf_size;
686     int64_t allocated_for_size= size;
687
688     int size_out, frame_bytes, ret, resample_changed;
689     AVCodecContext *enc= ost->st->codec;
690     AVCodecContext *dec= ist->st->codec;
691     int osize = av_get_bytes_per_sample(enc->sample_fmt);
692     int isize = av_get_bytes_per_sample(dec->sample_fmt);
693     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
694
695 need_realloc:
696     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
697     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
698     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
699     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
700     audio_buf_size*= osize*enc->channels;
701
702     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
703     if(coded_bps > 8*osize)
704         audio_out_size= audio_out_size * coded_bps / (8*osize);
705     audio_out_size += FF_MIN_BUFFER_SIZE;
706
707     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
708         fprintf(stderr, "Buffer sizes too large\n");
709         exit_program(1);
710     }
711
712     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
713     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
714     if (!audio_buf || !audio_out){
715         fprintf(stderr, "Out of memory in do_audio_out\n");
716         exit_program(1);
717     }
718
719     if (enc->channels != dec->channels || enc->sample_rate != dec->sample_rate)
720         ost->audio_resample = 1;
721
722     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
723                        ost->resample_channels    != dec->channels   ||
724                        ost->resample_sample_rate != dec->sample_rate;
725
726     if ((ost->audio_resample && !ost->resample) || resample_changed) {
727         if (resample_changed) {
728             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",
729                    ist->file_index, ist->st->index,
730                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
731                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
732             ost->resample_sample_fmt  = dec->sample_fmt;
733             ost->resample_channels    = dec->channels;
734             ost->resample_sample_rate = dec->sample_rate;
735             if (ost->resample)
736                 audio_resample_close(ost->resample);
737         }
738         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
739         if (audio_sync_method <= 1 &&
740             ost->resample_sample_fmt  == enc->sample_fmt &&
741             ost->resample_channels    == enc->channels   &&
742             ost->resample_sample_rate == enc->sample_rate) {
743             ost->resample = NULL;
744             ost->audio_resample = 0;
745         } else if (ost->audio_resample) {
746             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
747                 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
748             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
749                                                    enc->sample_rate, dec->sample_rate,
750                                                    enc->sample_fmt,  dec->sample_fmt,
751                                                    16, 10, 0, 0.8);
752             if (!ost->resample) {
753                 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
754                         dec->channels, dec->sample_rate,
755                         enc->channels, enc->sample_rate);
756                 exit_program(1);
757             }
758         }
759     }
760
761 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
762     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
763         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
764         if (ost->reformat_ctx)
765             av_audio_convert_free(ost->reformat_ctx);
766         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
767                                                    dec->sample_fmt, 1, NULL, 0);
768         if (!ost->reformat_ctx) {
769             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
770                 av_get_sample_fmt_name(dec->sample_fmt),
771                 av_get_sample_fmt_name(enc->sample_fmt));
772             exit_program(1);
773         }
774         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
775     }
776
777     if(audio_sync_method){
778         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
779                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
780         double idelta= delta*dec->sample_rate / enc->sample_rate;
781         int byte_delta= ((int)idelta)*2*dec->channels;
782
783         //FIXME resample delay
784         if(fabs(delta) > 50){
785             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
786                 if(byte_delta < 0){
787                     byte_delta= FFMAX(byte_delta, -size);
788                     size += byte_delta;
789                     buf  -= byte_delta;
790                     if(verbose > 2)
791                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
792                     if(!size)
793                         return;
794                     ist->is_start=0;
795                 }else{
796                     static uint8_t *input_tmp= NULL;
797                     input_tmp= av_realloc(input_tmp, byte_delta + size);
798
799                     if(byte_delta > allocated_for_size - size){
800                         allocated_for_size= byte_delta + (int64_t)size;
801                         goto need_realloc;
802                     }
803                     ist->is_start=0;
804
805                     memset(input_tmp, 0, byte_delta);
806                     memcpy(input_tmp + byte_delta, buf, size);
807                     buf= input_tmp;
808                     size += byte_delta;
809                     if(verbose > 2)
810                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
811                 }
812             }else if(audio_sync_method>1){
813                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
814                 av_assert0(ost->audio_resample);
815                 if(verbose > 2)
816                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
817 //                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));
818                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
819             }
820         }
821     }else
822         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
823                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
824
825     if (ost->audio_resample) {
826         buftmp = audio_buf;
827         size_out = audio_resample(ost->resample,
828                                   (short *)buftmp, (short *)buf,
829                                   size / (dec->channels * isize));
830         size_out = size_out * enc->channels * osize;
831     } else {
832         buftmp = buf;
833         size_out = size;
834     }
835
836     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
837         const void *ibuf[6]= {buftmp};
838         void *obuf[6]= {audio_buf};
839         int istride[6]= {isize};
840         int ostride[6]= {osize};
841         int len= size_out/istride[0];
842         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
843             printf("av_audio_convert() failed\n");
844             if (exit_on_error)
845                 exit_program(1);
846             return;
847         }
848         buftmp = audio_buf;
849         size_out = len*osize;
850     }
851
852     /* now encode as many frames as possible */
853     if (enc->frame_size > 1) {
854         /* output resampled raw samples */
855         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
856             fprintf(stderr, "av_fifo_realloc2() failed\n");
857             exit_program(1);
858         }
859         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
860
861         frame_bytes = enc->frame_size * osize * enc->channels;
862
863         while (av_fifo_size(ost->fifo) >= frame_bytes) {
864             AVPacket pkt;
865             av_init_packet(&pkt);
866
867             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
868
869             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
870
871             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
872                                        (short *)audio_buf);
873             if (ret < 0) {
874                 fprintf(stderr, "Audio encoding failed\n");
875                 exit_program(1);
876             }
877             audio_size += ret;
878             pkt.stream_index= ost->index;
879             pkt.data= audio_out;
880             pkt.size= ret;
881             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
882                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
883             pkt.flags |= AV_PKT_FLAG_KEY;
884             write_frame(s, &pkt, enc, ost->bitstream_filters);
885
886             ost->sync_opts += enc->frame_size;
887         }
888     } else {
889         AVPacket pkt;
890         av_init_packet(&pkt);
891
892         ost->sync_opts += size_out / (osize * enc->channels);
893
894         /* output a pcm frame */
895         /* determine the size of the coded buffer */
896         size_out /= osize;
897         if (coded_bps)
898             size_out = size_out*coded_bps/8;
899
900         if(size_out > audio_out_size){
901             fprintf(stderr, "Internal error, buffer size too small\n");
902             exit_program(1);
903         }
904
905         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
906         ret = avcodec_encode_audio(enc, audio_out, size_out,
907                                    (short *)buftmp);
908         if (ret < 0) {
909             fprintf(stderr, "Audio encoding failed\n");
910             exit_program(1);
911         }
912         audio_size += ret;
913         pkt.stream_index= ost->index;
914         pkt.data= audio_out;
915         pkt.size= ret;
916         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
917             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
918         pkt.flags |= AV_PKT_FLAG_KEY;
919         write_frame(s, &pkt, enc, ost->bitstream_filters);
920     }
921 }
922
923 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
924 {
925     AVCodecContext *dec;
926     AVPicture *picture2;
927     AVPicture picture_tmp;
928     uint8_t *buf = 0;
929
930     dec = ist->st->codec;
931
932     /* deinterlace : must be done before any resize */
933     if (do_deinterlace) {
934         int size;
935
936         /* create temporary picture */
937         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
938         buf = av_malloc(size);
939         if (!buf)
940             return;
941
942         picture2 = &picture_tmp;
943         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
944
945         if(avpicture_deinterlace(picture2, picture,
946                                  dec->pix_fmt, dec->width, dec->height) < 0) {
947             /* if error, do not deinterlace */
948             fprintf(stderr, "Deinterlacing failed\n");
949             av_free(buf);
950             buf = NULL;
951             picture2 = picture;
952         }
953     } else {
954         picture2 = picture;
955     }
956
957     if (picture != picture2)
958         *picture = *picture2;
959     *bufp = buf;
960 }
961
962 static void do_subtitle_out(AVFormatContext *s,
963                             OutputStream *ost,
964                             InputStream *ist,
965                             AVSubtitle *sub,
966                             int64_t pts)
967 {
968     static uint8_t *subtitle_out = NULL;
969     int subtitle_out_max_size = 1024 * 1024;
970     int subtitle_out_size, nb, i;
971     AVCodecContext *enc;
972     AVPacket pkt;
973
974     if (pts == AV_NOPTS_VALUE) {
975         fprintf(stderr, "Subtitle packets must have a pts\n");
976         if (exit_on_error)
977             exit_program(1);
978         return;
979     }
980
981     enc = ost->st->codec;
982
983     if (!subtitle_out) {
984         subtitle_out = av_malloc(subtitle_out_max_size);
985     }
986
987     /* Note: DVB subtitle need one packet to draw them and one other
988        packet to clear them */
989     /* XXX: signal it in the codec context ? */
990     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
991         nb = 2;
992     else
993         nb = 1;
994
995     for(i = 0; i < nb; i++) {
996         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
997         // start_display_time is required to be 0
998         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
999         sub->end_display_time -= sub->start_display_time;
1000         sub->start_display_time = 0;
1001         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1002                                                     subtitle_out_max_size, sub);
1003         if (subtitle_out_size < 0) {
1004             fprintf(stderr, "Subtitle encoding failed\n");
1005             exit_program(1);
1006         }
1007
1008         av_init_packet(&pkt);
1009         pkt.stream_index = ost->index;
1010         pkt.data = subtitle_out;
1011         pkt.size = subtitle_out_size;
1012         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1013         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1014             /* XXX: the pts correction is handled here. Maybe handling
1015                it in the codec would be better */
1016             if (i == 0)
1017                 pkt.pts += 90 * sub->start_display_time;
1018             else
1019                 pkt.pts += 90 * sub->end_display_time;
1020         }
1021         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1022     }
1023 }
1024
1025 static int bit_buffer_size= 1024*256;
1026 static uint8_t *bit_buffer= NULL;
1027
1028 static void do_video_resample(OutputStream *ost,
1029                               InputStream *ist,
1030                               AVFrame *in_picture,
1031                               AVFrame **out_picture)
1032 {
1033     int resample_changed = 0;
1034     AVCodecContext *dec = ist->st->codec;
1035     *out_picture = in_picture;
1036
1037     resample_changed = ost->resample_width   != dec->width  ||
1038                        ost->resample_height  != dec->height ||
1039                        ost->resample_pix_fmt != dec->pix_fmt;
1040
1041     if (resample_changed) {
1042         av_log(NULL, AV_LOG_INFO,
1043                "Input stream #%d.%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1044                ist->file_index, ist->st->index,
1045                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1046                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1047         if(!ost->video_resample)
1048             ost->video_resample = 1;
1049     }
1050
1051 #if !CONFIG_AVFILTER
1052     if (ost->video_resample) {
1053         *out_picture = &ost->pict_tmp;
1054         if (resample_changed) {
1055             /* initialize a new scaler context */
1056             sws_freeContext(ost->img_resample_ctx);
1057             ost->img_resample_ctx = sws_getContext(
1058                 ist->st->codec->width,
1059                 ist->st->codec->height,
1060                 ist->st->codec->pix_fmt,
1061                 ost->st->codec->width,
1062                 ost->st->codec->height,
1063                 ost->st->codec->pix_fmt,
1064                 ost->sws_flags, NULL, NULL, NULL);
1065             if (ost->img_resample_ctx == NULL) {
1066                 fprintf(stderr, "Cannot get resampling context\n");
1067                 exit_program(1);
1068             }
1069         }
1070         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1071               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1072     }
1073 #else
1074     if (resample_changed) {
1075         avfilter_graph_free(&ost->graph);
1076         if (configure_video_filters(ist, ost)) {
1077             fprintf(stderr, "Error reinitialising filters!\n");
1078             exit_program(1);
1079         }
1080     }
1081 #endif
1082     if (resample_changed) {
1083         ost->resample_width   = dec->width;
1084         ost->resample_height  = dec->height;
1085         ost->resample_pix_fmt = dec->pix_fmt;
1086     }
1087 }
1088
1089
1090 static void do_video_out(AVFormatContext *s,
1091                          OutputStream *ost,
1092                          InputStream *ist,
1093                          AVFrame *in_picture,
1094                          int *frame_size, float quality)
1095 {
1096     int nb_frames, i, ret, format_video_sync;
1097     AVFrame *final_picture;
1098     AVCodecContext *enc, *dec;
1099     double sync_ipts;
1100
1101     enc = ost->st->codec;
1102     dec = ist->st->codec;
1103
1104     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1105
1106     /* by default, we output a single frame */
1107     nb_frames = 1;
1108
1109     *frame_size = 0;
1110
1111     format_video_sync = video_sync_method;
1112     if (format_video_sync < 0)
1113         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? 2 : 1;
1114
1115     if (format_video_sync) {
1116         double vdelta = sync_ipts - ost->sync_opts;
1117         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1118         if (vdelta < -1.1)
1119             nb_frames = 0;
1120         else if (format_video_sync == 2) {
1121             if(vdelta<=-0.6){
1122                 nb_frames=0;
1123             }else if(vdelta>0.6)
1124                 ost->sync_opts= lrintf(sync_ipts);
1125         }else if (vdelta > 1.1)
1126             nb_frames = lrintf(vdelta);
1127 //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);
1128         if (nb_frames == 0){
1129             ++nb_frames_drop;
1130             if (verbose>2)
1131                 fprintf(stderr, "*** drop!\n");
1132         }else if (nb_frames > 1) {
1133             nb_frames_dup += nb_frames - 1;
1134             if (verbose>2)
1135                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1136         }
1137     }else
1138         ost->sync_opts= lrintf(sync_ipts);
1139
1140     nb_frames= FFMIN(nb_frames, max_frames[AVMEDIA_TYPE_VIDEO] - ost->frame_number);
1141     if (nb_frames <= 0)
1142         return;
1143
1144     do_video_resample(ost, ist, in_picture, &final_picture);
1145
1146     /* duplicates frame if needed */
1147     for(i=0;i<nb_frames;i++) {
1148         AVPacket pkt;
1149         av_init_packet(&pkt);
1150         pkt.stream_index= ost->index;
1151
1152         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1153             /* raw pictures are written as AVPicture structure to
1154                avoid any copies. We support temorarily the older
1155                method. */
1156             AVFrame* old_frame = enc->coded_frame;
1157             enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
1158             pkt.data= (uint8_t *)final_picture;
1159             pkt.size=  sizeof(AVPicture);
1160             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1161             pkt.flags |= AV_PKT_FLAG_KEY;
1162
1163             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1164             enc->coded_frame = old_frame;
1165         } else {
1166             AVFrame big_picture;
1167
1168             big_picture= *final_picture;
1169             /* better than nothing: use input picture interlaced
1170                settings */
1171             big_picture.interlaced_frame = in_picture->interlaced_frame;
1172             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1173                 if(top_field_first == -1)
1174                     big_picture.top_field_first = in_picture->top_field_first;
1175                 else
1176                     big_picture.top_field_first = top_field_first;
1177             }
1178
1179             /* handles same_quant here. This is not correct because it may
1180                not be a global option */
1181             big_picture.quality = quality;
1182             if(!me_threshold)
1183                 big_picture.pict_type = 0;
1184 //            big_picture.pts = AV_NOPTS_VALUE;
1185             big_picture.pts= ost->sync_opts;
1186 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1187 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1188             if (ost->forced_kf_index < ost->forced_kf_count &&
1189                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1190                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1191                 ost->forced_kf_index++;
1192             }
1193             ret = avcodec_encode_video(enc,
1194                                        bit_buffer, bit_buffer_size,
1195                                        &big_picture);
1196             if (ret < 0) {
1197                 fprintf(stderr, "Video encoding failed\n");
1198                 exit_program(1);
1199             }
1200
1201             if(ret>0){
1202                 pkt.data= bit_buffer;
1203                 pkt.size= ret;
1204                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1205                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1206 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1207    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1208    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1209
1210                 if(enc->coded_frame->key_frame)
1211                     pkt.flags |= AV_PKT_FLAG_KEY;
1212                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1213                 *frame_size = ret;
1214                 video_size += ret;
1215                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1216                 //        enc->frame_number-1, ret, enc->pict_type);
1217                 /* if two pass, output log */
1218                 if (ost->logfile && enc->stats_out) {
1219                     fprintf(ost->logfile, "%s", enc->stats_out);
1220                 }
1221             }
1222         }
1223         ost->sync_opts++;
1224         ost->frame_number++;
1225     }
1226 }
1227
1228 static double psnr(double d){
1229     return -10.0*log(d)/log(10.0);
1230 }
1231
1232 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1233                            int frame_size)
1234 {
1235     AVCodecContext *enc;
1236     int frame_number;
1237     double ti1, bitrate, avg_bitrate;
1238
1239     /* this is executed just the first time do_video_stats is called */
1240     if (!vstats_file) {
1241         vstats_file = fopen(vstats_filename, "w");
1242         if (!vstats_file) {
1243             perror("fopen");
1244             exit_program(1);
1245         }
1246     }
1247
1248     enc = ost->st->codec;
1249     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1250         frame_number = ost->frame_number;
1251         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1252         if (enc->flags&CODEC_FLAG_PSNR)
1253             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1254
1255         fprintf(vstats_file,"f_size= %6d ", frame_size);
1256         /* compute pts value */
1257         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1258         if (ti1 < 0.01)
1259             ti1 = 0.01;
1260
1261         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1262         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1263         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1264             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1265         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1266     }
1267 }
1268
1269 static void print_report(OutputFile *output_files,
1270                          OutputStream *ost_table, int nb_ostreams,
1271                          int is_last_report, int64_t timer_start)
1272 {
1273     char buf[1024];
1274     OutputStream *ost;
1275     AVFormatContext *oc;
1276     int64_t total_size;
1277     AVCodecContext *enc;
1278     int frame_number, vid, i;
1279     double bitrate, ti1, pts;
1280     static int64_t last_time = -1;
1281     static int qp_histogram[52];
1282
1283     if (!is_last_report) {
1284         int64_t cur_time;
1285         /* display the report every 0.5 seconds */
1286         cur_time = av_gettime();
1287         if (last_time == -1) {
1288             last_time = cur_time;
1289             return;
1290         }
1291         if ((cur_time - last_time) < 500000)
1292             return;
1293         last_time = cur_time;
1294     }
1295
1296
1297     oc = output_files[0].ctx;
1298
1299     total_size = avio_size(oc->pb);
1300     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1301         total_size= avio_tell(oc->pb);
1302
1303     buf[0] = '\0';
1304     ti1 = 1e10;
1305     vid = 0;
1306     for(i=0;i<nb_ostreams;i++) {
1307         float q = -1;
1308         ost = &ost_table[i];
1309         enc = ost->st->codec;
1310         if (!ost->st->stream_copy && enc->coded_frame)
1311             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1312         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1313             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1314         }
1315         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1316             float t = (av_gettime()-timer_start) / 1000000.0;
1317
1318             frame_number = ost->frame_number;
1319             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1320                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1321             if(is_last_report)
1322                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1323             if(qp_hist){
1324                 int j;
1325                 int qp = lrintf(q);
1326                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1327                     qp_histogram[qp]++;
1328                 for(j=0; j<32; j++)
1329                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1330             }
1331             if (enc->flags&CODEC_FLAG_PSNR){
1332                 int j;
1333                 double error, error_sum=0;
1334                 double scale, scale_sum=0;
1335                 char type[3]= {'Y','U','V'};
1336                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1337                 for(j=0; j<3; j++){
1338                     if(is_last_report){
1339                         error= enc->error[j];
1340                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1341                     }else{
1342                         error= enc->coded_frame->error[j];
1343                         scale= enc->width*enc->height*255.0*255.0;
1344                     }
1345                     if(j) scale/=4;
1346                     error_sum += error;
1347                     scale_sum += scale;
1348                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1349                 }
1350                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1351             }
1352             vid = 1;
1353         }
1354         /* compute min output value */
1355         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1356         if ((pts < ti1) && (pts > 0))
1357             ti1 = pts;
1358     }
1359     if (ti1 < 0.01)
1360         ti1 = 0.01;
1361
1362     if (verbose > 0 || is_last_report) {
1363         bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1364
1365         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1366             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1367             (double)total_size / 1024, ti1, bitrate);
1368
1369         if (nb_frames_dup || nb_frames_drop)
1370           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1371                   nb_frames_dup, nb_frames_drop);
1372
1373         if (verbose >= 0)
1374             fprintf(stderr, "%s    \r", buf);
1375
1376         fflush(stderr);
1377     }
1378
1379     if (is_last_report && verbose >= 0){
1380         int64_t raw= audio_size + video_size + extra_size;
1381         fprintf(stderr, "\n");
1382         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1383                 video_size/1024.0,
1384                 audio_size/1024.0,
1385                 extra_size/1024.0,
1386                 100.0*(total_size - raw)/raw
1387         );
1388     }
1389 }
1390
1391 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1392 {
1393     int fill_char = 0x00;
1394     if (sample_fmt == AV_SAMPLE_FMT_U8)
1395         fill_char = 0x80;
1396     memset(buf, fill_char, size);
1397 }
1398
1399 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1400 static int output_packet(InputStream *ist, int ist_index,
1401                          OutputStream *ost_table, int nb_ostreams,
1402                          const AVPacket *pkt)
1403 {
1404     AVFormatContext *os;
1405     OutputStream *ost;
1406     int ret, i;
1407     int got_output;
1408     AVFrame picture;
1409     void *buffer_to_free = NULL;
1410     static unsigned int samples_size= 0;
1411     AVSubtitle subtitle, *subtitle_to_free;
1412     int64_t pkt_pts = AV_NOPTS_VALUE;
1413 #if CONFIG_AVFILTER
1414     int frame_available;
1415 #endif
1416     float quality;
1417
1418     AVPacket avpkt;
1419     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1420
1421     if(ist->next_pts == AV_NOPTS_VALUE)
1422         ist->next_pts= ist->pts;
1423
1424     if (pkt == NULL) {
1425         /* EOF handling */
1426         av_init_packet(&avpkt);
1427         avpkt.data = NULL;
1428         avpkt.size = 0;
1429         goto handle_eof;
1430     } else {
1431         avpkt = *pkt;
1432     }
1433
1434     if(pkt->dts != AV_NOPTS_VALUE)
1435         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1436     if(pkt->pts != AV_NOPTS_VALUE)
1437         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1438
1439     //while we have more to decode or while the decoder did output something on EOF
1440     while (avpkt.size > 0 || (!pkt && got_output)) {
1441         uint8_t *data_buf, *decoded_data_buf;
1442         int data_size, decoded_data_size;
1443     handle_eof:
1444         ist->pts= ist->next_pts;
1445
1446         if(avpkt.size && avpkt.size != pkt->size &&
1447            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1448             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1449             ist->showed_multi_packet_warning=1;
1450         }
1451
1452         /* decode the packet if needed */
1453         decoded_data_buf = NULL; /* fail safe */
1454         decoded_data_size= 0;
1455         data_buf  = avpkt.data;
1456         data_size = avpkt.size;
1457         subtitle_to_free = NULL;
1458         if (ist->decoding_needed) {
1459             switch(ist->st->codec->codec_type) {
1460             case AVMEDIA_TYPE_AUDIO:{
1461                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1462                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1463                     av_free(samples);
1464                     samples= av_malloc(samples_size);
1465                 }
1466                 decoded_data_size= samples_size;
1467                     /* XXX: could avoid copy if PCM 16 bits with same
1468                        endianness as CPU */
1469                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1470                                             &avpkt);
1471                 if (ret < 0)
1472                     return ret;
1473                 avpkt.data += ret;
1474                 avpkt.size -= ret;
1475                 data_size   = ret;
1476                 got_output  = decoded_data_size > 0;
1477                 /* Some bug in mpeg audio decoder gives */
1478                 /* decoded_data_size < 0, it seems they are overflows */
1479                 if (!got_output) {
1480                     /* no audio frame */
1481                     continue;
1482                 }
1483                 decoded_data_buf = (uint8_t *)samples;
1484                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1485                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1486                 break;}
1487             case AVMEDIA_TYPE_VIDEO:
1488                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1489                     /* XXX: allocate picture correctly */
1490                     avcodec_get_frame_defaults(&picture);
1491                     avpkt.pts = pkt_pts;
1492                     avpkt.dts = ist->pts;
1493                     pkt_pts = AV_NOPTS_VALUE;
1494
1495                     ret = avcodec_decode_video2(ist->st->codec,
1496                                                 &picture, &got_output, &avpkt);
1497                     quality = same_quant ? picture.quality : 0;
1498                     if (ret < 0)
1499                         return ret;
1500                     if (!got_output) {
1501                         /* no picture yet */
1502                         goto discard_packet;
1503                     }
1504                     ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, picture.pkt_pts, picture.pkt_dts);
1505                     if (ist->st->codec->time_base.num != 0) {
1506                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1507                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1508                                           ist->st->codec->time_base.num * ticks) /
1509                             ist->st->codec->time_base.den;
1510                     }
1511                     avpkt.size = 0;
1512                     buffer_to_free = NULL;
1513                     pre_process_video_frame(ist, (AVPicture *)&picture, &buffer_to_free);
1514                     break;
1515             case AVMEDIA_TYPE_SUBTITLE:
1516                 ret = avcodec_decode_subtitle2(ist->st->codec,
1517                                                &subtitle, &got_output, &avpkt);
1518                 if (ret < 0)
1519                     return ret;
1520                 if (!got_output) {
1521                     goto discard_packet;
1522                 }
1523                 subtitle_to_free = &subtitle;
1524                 avpkt.size = 0;
1525                 break;
1526             default:
1527                 return -1;
1528             }
1529         } else {
1530             switch(ist->st->codec->codec_type) {
1531             case AVMEDIA_TYPE_AUDIO:
1532                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1533                     ist->st->codec->sample_rate;
1534                 break;
1535             case AVMEDIA_TYPE_VIDEO:
1536                 if (ist->st->codec->time_base.num != 0) {
1537                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1538                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1539                                       ist->st->codec->time_base.num * ticks) /
1540                         ist->st->codec->time_base.den;
1541                 }
1542                 break;
1543             }
1544             ret = avpkt.size;
1545             avpkt.size = 0;
1546         }
1547
1548         // preprocess audio (volume)
1549         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1550             if (audio_volume != 256) {
1551                 short *volp;
1552                 volp = samples;
1553                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1554                     int v = ((*volp) * audio_volume + 128) >> 8;
1555                     if (v < -32768) v = -32768;
1556                     if (v >  32767) v = 32767;
1557                     *volp++ = v;
1558                 }
1559             }
1560         }
1561
1562         /* frame rate emulation */
1563         if (rate_emu) {
1564             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1565             int64_t now = av_gettime() - ist->start;
1566             if (pts > now)
1567                 usleep(pts - now);
1568         }
1569         /* if output time reached then transcode raw format,
1570            encode packets and output them */
1571         for (i = 0; i < nb_ostreams; i++) {
1572             OutputFile *of = &output_files[ost_table[i].file_index];
1573             int frame_size;
1574
1575             ost = &ost_table[i];
1576             if (ost->source_index != ist_index)
1577                 continue;
1578
1579             if (of->start_time && ist->pts < of->start_time)
1580                 continue;
1581
1582             if (of->recording_time != INT64_MAX &&
1583                 av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1584                               (AVRational){1, 1000000}) >= 0) {
1585                 ost->is_past_recording_time = 1;
1586                 continue;
1587             }
1588
1589 #if CONFIG_AVFILTER
1590             if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1591                 ost->input_video_filter) {
1592                 AVRational sar;
1593                 if (ist->st->sample_aspect_ratio.num)
1594                     sar = ist->st->sample_aspect_ratio;
1595                 else
1596                     sar = ist->st->codec->sample_aspect_ratio;
1597                 av_vsrc_buffer_add_frame(ost->input_video_filter, &picture, ist->pts, sar);
1598             }
1599             frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1600                 !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1601             while (frame_available) {
1602                 AVRational ist_pts_tb;
1603                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter)
1604                     get_filtered_video_frame(ost->output_video_filter, &picture, &ost->picref, &ist_pts_tb);
1605                 if (ost->picref)
1606                     ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1607 #endif
1608                 os = output_files[ost->file_index].ctx;
1609
1610                 /* set the input output pts pairs */
1611                 //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
1612
1613                 if (ost->encoding_needed) {
1614                     av_assert0(ist->decoding_needed);
1615                     switch(ost->st->codec->codec_type) {
1616                     case AVMEDIA_TYPE_AUDIO:
1617                         do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1618                         break;
1619                     case AVMEDIA_TYPE_VIDEO:
1620 #if CONFIG_AVFILTER
1621                         if (ost->picref->video && !ost->frame_aspect_ratio)
1622                             ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
1623 #endif
1624                         do_video_out(os, ost, ist, &picture, &frame_size,
1625                                      same_quant ? quality : ost->st->codec->global_quality);
1626                         if (vstats_filename && frame_size)
1627                             do_video_stats(os, ost, frame_size);
1628                         break;
1629                     case AVMEDIA_TYPE_SUBTITLE:
1630                         do_subtitle_out(os, ost, ist, &subtitle,
1631                                         pkt->pts);
1632                         break;
1633                     default:
1634                         abort();
1635                     }
1636                 } else {
1637                     AVFrame avframe; //FIXME/XXX remove this
1638                     AVPacket opkt;
1639                     int64_t ost_tb_start_time= av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1640
1641                     av_init_packet(&opkt);
1642
1643                     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1644 #if !CONFIG_AVFILTER
1645                         continue;
1646 #else
1647                         goto cont;
1648 #endif
1649
1650                     /* no reencoding needed : output the packet directly */
1651                     /* force the input stream PTS */
1652
1653                     avcodec_get_frame_defaults(&avframe);
1654                     ost->st->codec->coded_frame= &avframe;
1655                     avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1656
1657                     if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1658                         audio_size += data_size;
1659                     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1660                         video_size += data_size;
1661                         ost->sync_opts++;
1662                     }
1663
1664                     opkt.stream_index= ost->index;
1665                     if(pkt->pts != AV_NOPTS_VALUE)
1666                         opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1667                     else
1668                         opkt.pts= AV_NOPTS_VALUE;
1669
1670                     if (pkt->dts == AV_NOPTS_VALUE)
1671                         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1672                     else
1673                         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1674                     opkt.dts -= ost_tb_start_time;
1675
1676                     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1677                     opkt.flags= pkt->flags;
1678
1679                     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1680                     if(   ost->st->codec->codec_id != CODEC_ID_H264
1681                        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1682                        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1683                        ) {
1684                         if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1685                             opkt.destruct= av_destruct_packet;
1686                     } else {
1687                         opkt.data = data_buf;
1688                         opkt.size = data_size;
1689                     }
1690
1691                     write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1692                     ost->st->codec->frame_number++;
1693                     ost->frame_number++;
1694                     av_free_packet(&opkt);
1695                 }
1696 #if CONFIG_AVFILTER
1697                 cont:
1698                 frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1699                                    ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1700                 if (ost->picref)
1701                     avfilter_unref_buffer(ost->picref);
1702             }
1703 #endif
1704             }
1705
1706         av_free(buffer_to_free);
1707         /* XXX: allocate the subtitles in the codec ? */
1708         if (subtitle_to_free) {
1709             avsubtitle_free(subtitle_to_free);
1710             subtitle_to_free = NULL;
1711         }
1712     }
1713  discard_packet:
1714     if (pkt == NULL) {
1715         /* EOF handling */
1716
1717         for(i=0;i<nb_ostreams;i++) {
1718             ost = &ost_table[i];
1719             if (ost->source_index == ist_index) {
1720                 AVCodecContext *enc= ost->st->codec;
1721                 os = output_files[ost->file_index].ctx;
1722
1723                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1724                     continue;
1725                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1726                     continue;
1727
1728                 if (ost->encoding_needed) {
1729                     for(;;) {
1730                         AVPacket pkt;
1731                         int fifo_bytes;
1732                         av_init_packet(&pkt);
1733                         pkt.stream_index= ost->index;
1734
1735                         switch(ost->st->codec->codec_type) {
1736                         case AVMEDIA_TYPE_AUDIO:
1737                             fifo_bytes = av_fifo_size(ost->fifo);
1738                             ret = 0;
1739                             /* encode any samples remaining in fifo */
1740                             if (fifo_bytes > 0) {
1741                                 int osize = av_get_bytes_per_sample(enc->sample_fmt);
1742                                 int fs_tmp = enc->frame_size;
1743
1744                                 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1745                                 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1746                                     enc->frame_size = fifo_bytes / (osize * enc->channels);
1747                                 } else { /* pad */
1748                                     int frame_bytes = enc->frame_size*osize*enc->channels;
1749                                     if (allocated_audio_buf_size < frame_bytes)
1750                                         exit_program(1);
1751                                     generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1752                                 }
1753
1754                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1755                                 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1756                                                           ost->st->time_base.num, enc->sample_rate);
1757                                 enc->frame_size = fs_tmp;
1758                             }
1759                             if(ret <= 0) {
1760                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1761                             }
1762                             if (ret < 0) {
1763                                 fprintf(stderr, "Audio encoding failed\n");
1764                                 exit_program(1);
1765                             }
1766                             audio_size += ret;
1767                             pkt.flags |= AV_PKT_FLAG_KEY;
1768                             break;
1769                         case AVMEDIA_TYPE_VIDEO:
1770                             ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1771                             if (ret < 0) {
1772                                 fprintf(stderr, "Video encoding failed\n");
1773                                 exit_program(1);
1774                             }
1775                             video_size += ret;
1776                             if(enc->coded_frame && enc->coded_frame->key_frame)
1777                                 pkt.flags |= AV_PKT_FLAG_KEY;
1778                             if (ost->logfile && enc->stats_out) {
1779                                 fprintf(ost->logfile, "%s", enc->stats_out);
1780                             }
1781                             break;
1782                         default:
1783                             ret=-1;
1784                         }
1785
1786                         if(ret<=0)
1787                             break;
1788                         pkt.data= bit_buffer;
1789                         pkt.size= ret;
1790                         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1791                             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1792                         write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1793                     }
1794                 }
1795             }
1796         }
1797     }
1798
1799     return 0;
1800 }
1801
1802 static void print_sdp(OutputFile *output_files, int n)
1803 {
1804     char sdp[2048];
1805     int i;
1806     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
1807
1808     if (!avc)
1809         exit_program(1);
1810     for (i = 0; i < n; i++)
1811         avc[i] = output_files[i].ctx;
1812
1813     av_sdp_create(avc, n, sdp, sizeof(sdp));
1814     printf("SDP:\n%s\n", sdp);
1815     fflush(stdout);
1816     av_freep(&avc);
1817 }
1818
1819 /*
1820  * The following code is the main loop of the file converter
1821  */
1822 static int transcode(OutputFile *output_files,
1823                      int nb_output_files,
1824                      InputFile *input_files,
1825                      int nb_input_files)
1826 {
1827     int ret = 0, i, j;
1828     AVFormatContext *is, *os;
1829     AVCodecContext *codec, *icodec;
1830     OutputStream *ost;
1831     InputStream *ist;
1832     char error[1024];
1833     int want_sdp = 1;
1834     uint8_t *no_packet;
1835     int no_packet_count=0;
1836     int64_t timer_start;
1837
1838     if (!(no_packet = av_mallocz(nb_input_files)))
1839         exit_program(1);
1840
1841     if (rate_emu)
1842         for (i = 0; i < nb_input_streams; i++)
1843             input_streams[i].start = av_gettime();
1844
1845     /* output stream init */
1846     for(i=0;i<nb_output_files;i++) {
1847         os = output_files[i].ctx;
1848         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1849             av_dump_format(os, i, os->filename, 1);
1850             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
1851             ret = AVERROR(EINVAL);
1852             goto fail;
1853         }
1854     }
1855
1856     /* for each output stream, we compute the right encoding parameters */
1857     for (i = 0; i < nb_output_streams; i++) {
1858         ost = &output_streams[i];
1859         os = output_files[ost->file_index].ctx;
1860         ist = &input_streams[ost->source_index];
1861
1862         codec = ost->st->codec;
1863         icodec = ist->st->codec;
1864
1865         ost->st->disposition = ist->st->disposition;
1866         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
1867         codec->chroma_sample_location = icodec->chroma_sample_location;
1868
1869         if (ost->st->stream_copy) {
1870             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
1871
1872             if (extra_size > INT_MAX)
1873                 goto fail;
1874
1875             /* if stream_copy is selected, no need to decode or encode */
1876             codec->codec_id = icodec->codec_id;
1877             codec->codec_type = icodec->codec_type;
1878
1879             if(!codec->codec_tag){
1880                 if(   !os->oformat->codec_tag
1881                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
1882                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
1883                     codec->codec_tag = icodec->codec_tag;
1884             }
1885
1886             codec->bit_rate = icodec->bit_rate;
1887             codec->rc_max_rate    = icodec->rc_max_rate;
1888             codec->rc_buffer_size = icodec->rc_buffer_size;
1889             codec->extradata= av_mallocz(extra_size);
1890             if (!codec->extradata)
1891                 goto fail;
1892             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
1893             codec->extradata_size= icodec->extradata_size;
1894             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){
1895                 codec->time_base = icodec->time_base;
1896                 codec->time_base.num *= icodec->ticks_per_frame;
1897                 av_reduce(&codec->time_base.num, &codec->time_base.den,
1898                           codec->time_base.num, codec->time_base.den, INT_MAX);
1899             }else
1900                 codec->time_base = ist->st->time_base;
1901             switch(codec->codec_type) {
1902             case AVMEDIA_TYPE_AUDIO:
1903                 if(audio_volume != 256) {
1904                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
1905                     exit_program(1);
1906                 }
1907                 codec->channel_layout = icodec->channel_layout;
1908                 codec->sample_rate = icodec->sample_rate;
1909                 codec->channels = icodec->channels;
1910                 codec->frame_size = icodec->frame_size;
1911                 codec->audio_service_type = icodec->audio_service_type;
1912                 codec->block_align= icodec->block_align;
1913                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
1914                     codec->block_align= 0;
1915                 if(codec->codec_id == CODEC_ID_AC3)
1916                     codec->block_align= 0;
1917                 break;
1918             case AVMEDIA_TYPE_VIDEO:
1919                 codec->pix_fmt = icodec->pix_fmt;
1920                 codec->width = icodec->width;
1921                 codec->height = icodec->height;
1922                 codec->has_b_frames = icodec->has_b_frames;
1923                 if (!codec->sample_aspect_ratio.num) {
1924                     codec->sample_aspect_ratio =
1925                     ost->st->sample_aspect_ratio =
1926                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
1927                         ist->st->codec->sample_aspect_ratio.num ?
1928                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
1929                 }
1930                 break;
1931             case AVMEDIA_TYPE_SUBTITLE:
1932                 codec->width = icodec->width;
1933                 codec->height = icodec->height;
1934                 break;
1935             case AVMEDIA_TYPE_DATA:
1936                 break;
1937             default:
1938                 abort();
1939             }
1940         } else {
1941             if (!ost->enc)
1942                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
1943             switch(codec->codec_type) {
1944             case AVMEDIA_TYPE_AUDIO:
1945                 ost->fifo= av_fifo_alloc(1024);
1946                 if(!ost->fifo)
1947                     goto fail;
1948                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
1949                 if (!codec->sample_rate) {
1950                     codec->sample_rate = icodec->sample_rate;
1951                     if (icodec->lowres)
1952                         codec->sample_rate >>= icodec->lowres;
1953                 }
1954                 choose_sample_rate(ost->st, ost->enc);
1955                 codec->time_base = (AVRational){1, codec->sample_rate};
1956                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
1957                     codec->sample_fmt = icodec->sample_fmt;
1958                 choose_sample_fmt(ost->st, ost->enc);
1959                 if (!codec->channels)
1960                     codec->channels = icodec->channels;
1961                 codec->channel_layout = icodec->channel_layout;
1962                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
1963                     codec->channel_layout = 0;
1964                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
1965                 icodec->request_channels = codec->channels;
1966                 ist->decoding_needed = 1;
1967                 ost->encoding_needed = 1;
1968                 ost->resample_sample_fmt  = icodec->sample_fmt;
1969                 ost->resample_sample_rate = icodec->sample_rate;
1970                 ost->resample_channels    = icodec->channels;
1971                 break;
1972             case AVMEDIA_TYPE_VIDEO:
1973                 if (codec->pix_fmt == PIX_FMT_NONE)
1974                     codec->pix_fmt = icodec->pix_fmt;
1975                 choose_pixel_fmt(ost->st, ost->enc);
1976
1977                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
1978                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
1979                     exit_program(1);
1980                 }
1981
1982                 if (!codec->width || !codec->height) {
1983                     codec->width  = icodec->width;
1984                     codec->height = icodec->height;
1985                 }
1986
1987                 ost->video_resample = codec->width   != icodec->width  ||
1988                                       codec->height  != icodec->height ||
1989                                       codec->pix_fmt != icodec->pix_fmt;
1990                 if (ost->video_resample) {
1991 #if !CONFIG_AVFILTER
1992                     avcodec_get_frame_defaults(&ost->pict_tmp);
1993                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
1994                                        codec->width, codec->height)) {
1995                         fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
1996                         exit_program(1);
1997                     }
1998                     ost->img_resample_ctx = sws_getContext(
1999                         icodec->width,
2000                         icodec->height,
2001                         icodec->pix_fmt,
2002                         codec->width,
2003                         codec->height,
2004                         codec->pix_fmt,
2005                         ost->sws_flags, NULL, NULL, NULL);
2006                     if (ost->img_resample_ctx == NULL) {
2007                         fprintf(stderr, "Cannot get resampling context\n");
2008                         exit_program(1);
2009                     }
2010 #endif
2011                     codec->bits_per_raw_sample= 0;
2012                 }
2013
2014                 ost->resample_height = icodec->height;
2015                 ost->resample_width  = icodec->width;
2016                 ost->resample_pix_fmt= icodec->pix_fmt;
2017                 ost->encoding_needed = 1;
2018                 ist->decoding_needed = 1;
2019
2020                 if (!ost->frame_rate.num)
2021                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2022                 if (ost->enc && ost->enc->supported_framerates && !force_fps) {
2023                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2024                     ost->frame_rate = ost->enc->supported_framerates[idx];
2025                 }
2026                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2027
2028 #if CONFIG_AVFILTER
2029                 if (configure_video_filters(ist, ost)) {
2030                     fprintf(stderr, "Error opening filters!\n");
2031                     exit(1);
2032                 }
2033 #endif
2034                 break;
2035             case AVMEDIA_TYPE_SUBTITLE:
2036                 ost->encoding_needed = 1;
2037                 ist->decoding_needed = 1;
2038                 break;
2039             default:
2040                 abort();
2041                 break;
2042             }
2043             /* two pass mode */
2044             if (ost->encoding_needed &&
2045                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2046                 char logfilename[1024];
2047                 FILE *f;
2048
2049                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2050                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2051                          i);
2052                 if (codec->flags & CODEC_FLAG_PASS1) {
2053                     f = fopen(logfilename, "wb");
2054                     if (!f) {
2055                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2056                         exit_program(1);
2057                     }
2058                     ost->logfile = f;
2059                 } else {
2060                     char  *logbuffer;
2061                     size_t logbuffer_size;
2062                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2063                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2064                         exit_program(1);
2065                     }
2066                     codec->stats_in = logbuffer;
2067                 }
2068             }
2069         }
2070         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2071             int size= codec->width * codec->height;
2072             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2073         }
2074     }
2075
2076     if (!bit_buffer)
2077         bit_buffer = av_malloc(bit_buffer_size);
2078     if (!bit_buffer) {
2079         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2080                 bit_buffer_size);
2081         ret = AVERROR(ENOMEM);
2082         goto fail;
2083     }
2084
2085     /* open each encoder */
2086     for (i = 0; i < nb_output_streams; i++) {
2087         ost = &output_streams[i];
2088         if (ost->encoding_needed) {
2089             AVCodec *codec = ost->enc;
2090             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2091             if (!codec) {
2092                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2093                          ost->st->codec->codec_id, ost->file_index, ost->index);
2094                 ret = AVERROR(EINVAL);
2095                 goto dump_format;
2096             }
2097             if (dec->subtitle_header) {
2098                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2099                 if (!ost->st->codec->subtitle_header) {
2100                     ret = AVERROR(ENOMEM);
2101                     goto dump_format;
2102                 }
2103                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2104                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2105             }
2106             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2107                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2108                         ost->file_index, ost->index);
2109                 ret = AVERROR(EINVAL);
2110                 goto dump_format;
2111             }
2112             assert_codec_experimental(ost->st->codec, 1);
2113             assert_avoptions(ost->opts);
2114             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2115                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2116                                              "It takes bits/s as argument, not kbits/s\n");
2117             extra_size += ost->st->codec->extradata_size;
2118         }
2119     }
2120
2121     /* open each decoder */
2122     for (i = 0; i < nb_input_streams; i++) {
2123         ist = &input_streams[i];
2124         if (ist->decoding_needed) {
2125             AVCodec *codec = ist->dec;
2126             if (!codec)
2127                 codec = avcodec_find_decoder(ist->st->codec->codec_id);
2128             if (!codec) {
2129                 snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
2130                         ist->st->codec->codec_id, ist->file_index, ist->st->index);
2131                 ret = AVERROR(EINVAL);
2132                 goto dump_format;
2133             }
2134
2135             /* update requested sample format for the decoder based on the
2136                corresponding encoder sample format */
2137             for (j = 0; j < nb_output_streams; j++) {
2138                 ost = &output_streams[j];
2139                 if (ost->source_index == i) {
2140                     update_sample_fmt(ist->st->codec, codec, ost->st->codec);
2141                     break;
2142                 }
2143             }
2144
2145             if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2146                 snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
2147                         ist->file_index, ist->st->index);
2148                 ret = AVERROR(EINVAL);
2149                 goto dump_format;
2150             }
2151             assert_codec_experimental(ist->st->codec, 0);
2152             assert_avoptions(ost->opts);
2153         }
2154     }
2155
2156     /* init pts */
2157     for (i = 0; i < nb_input_streams; i++) {
2158         AVStream *st;
2159         ist = &input_streams[i];
2160         st= ist->st;
2161         ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
2162         ist->next_pts = AV_NOPTS_VALUE;
2163         init_pts_correction(&ist->pts_ctx);
2164         ist->is_start = 1;
2165     }
2166
2167     /* open files and write file headers */
2168     for (i = 0; i < nb_output_files; i++) {
2169         os = output_files[i].ctx;
2170         if (avformat_write_header(os, &output_files[i].opts) < 0) {
2171             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2172             ret = AVERROR(EINVAL);
2173             goto dump_format;
2174         }
2175         assert_avoptions(output_files[i].opts);
2176         if (strcmp(os->oformat->name, "rtp")) {
2177             want_sdp = 0;
2178         }
2179     }
2180
2181  dump_format:
2182     /* dump the file output parameters - cannot be done before in case
2183        of stream copy */
2184     for(i=0;i<nb_output_files;i++) {
2185         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2186     }
2187
2188     /* dump the stream mapping */
2189     if (verbose >= 0) {
2190         fprintf(stderr, "Stream mapping:\n");
2191         for (i = 0; i < nb_output_streams;i ++) {
2192             ost = &output_streams[i];
2193             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2194                     input_streams[ost->source_index].file_index,
2195                     input_streams[ost->source_index].st->index,
2196                     ost->file_index,
2197                     ost->index);
2198             if (ost->sync_ist != &input_streams[ost->source_index])
2199                 fprintf(stderr, " [sync #%d.%d]",
2200                         ost->sync_ist->file_index,
2201                         ost->sync_ist->st->index);
2202             if (ost->st->stream_copy)
2203                 fprintf(stderr, " (copy)");
2204             fprintf(stderr, "\n");
2205         }
2206     }
2207
2208     if (ret) {
2209         fprintf(stderr, "%s\n", error);
2210         goto fail;
2211     }
2212
2213     if (want_sdp) {
2214         print_sdp(output_files, nb_output_files);
2215     }
2216
2217     if (verbose >= 0)
2218         fprintf(stderr, "Press ctrl-c to stop encoding\n");
2219     term_init();
2220
2221     timer_start = av_gettime();
2222
2223     for(; received_sigterm == 0;) {
2224         int file_index, ist_index;
2225         AVPacket pkt;
2226         int64_t ipts_min;
2227         double opts_min;
2228
2229     redo:
2230         ipts_min = INT64_MAX;
2231         opts_min= 1e100;
2232
2233         /* select the stream that we must read now by looking at the
2234            smallest output pts */
2235         file_index = -1;
2236         for (i = 0; i < nb_output_streams; i++) {
2237             int64_t ipts;
2238             double  opts;
2239             ost = &output_streams[i];
2240             os = output_files[ost->file_index].ctx;
2241             ist = &input_streams[ost->source_index];
2242             if(ost->is_past_recording_time || no_packet[ist->file_index])
2243                 continue;
2244                 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2245             ipts = ist->pts;
2246             if (!input_files[ist->file_index].eof_reached){
2247                 if(ipts < ipts_min) {
2248                     ipts_min = ipts;
2249                     if(input_sync ) file_index = ist->file_index;
2250                 }
2251                 if(opts < opts_min) {
2252                     opts_min = opts;
2253                     if(!input_sync) file_index = ist->file_index;
2254                 }
2255             }
2256             if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
2257                 file_index= -1;
2258                 break;
2259             }
2260         }
2261         /* if none, if is finished */
2262         if (file_index < 0) {
2263             if(no_packet_count){
2264                 no_packet_count=0;
2265                 memset(no_packet, 0, nb_input_files);
2266                 usleep(10000);
2267                 continue;
2268             }
2269             break;
2270         }
2271
2272         /* finish if limit size exhausted */
2273         if (limit_filesize != 0 && limit_filesize <= avio_tell(output_files[0].ctx->pb))
2274             break;
2275
2276         /* read a frame from it and output it in the fifo */
2277         is = input_files[file_index].ctx;
2278         ret= av_read_frame(is, &pkt);
2279         if(ret == AVERROR(EAGAIN)){
2280             no_packet[file_index]=1;
2281             no_packet_count++;
2282             continue;
2283         }
2284         if (ret < 0) {
2285             input_files[file_index].eof_reached = 1;
2286             if (opt_shortest)
2287                 break;
2288             else
2289                 continue;
2290         }
2291
2292         no_packet_count=0;
2293         memset(no_packet, 0, nb_input_files);
2294
2295         if (do_pkt_dump) {
2296             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2297                              is->streams[pkt.stream_index]);
2298         }
2299         /* the following test is needed in case new streams appear
2300            dynamically in stream : we ignore them */
2301         if (pkt.stream_index >= input_files[file_index].ctx->nb_streams)
2302             goto discard_packet;
2303         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2304         ist = &input_streams[ist_index];
2305         if (ist->discard)
2306             goto discard_packet;
2307
2308         if (pkt.dts != AV_NOPTS_VALUE)
2309             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2310         if (pkt.pts != AV_NOPTS_VALUE)
2311             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2312
2313         if (ist->ts_scale) {
2314             if(pkt.pts != AV_NOPTS_VALUE)
2315                 pkt.pts *= ist->ts_scale;
2316             if(pkt.dts != AV_NOPTS_VALUE)
2317                 pkt.dts *= ist->ts_scale;
2318         }
2319
2320 //        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);
2321         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2322             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2323             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2324             int64_t delta= pkt_dts - ist->next_pts;
2325             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2326                 input_files[ist->file_index].ts_offset -= delta;
2327                 if (verbose > 2)
2328                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2329                             delta, input_files[ist->file_index].ts_offset);
2330                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2331                 if(pkt.pts != AV_NOPTS_VALUE)
2332                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2333             }
2334         }
2335
2336         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2337         if (output_packet(ist, ist_index, output_streams, nb_output_streams, &pkt) < 0) {
2338
2339             if (verbose >= 0)
2340                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2341                         ist->file_index, ist->st->index);
2342             if (exit_on_error)
2343                 exit_program(1);
2344             av_free_packet(&pkt);
2345             goto redo;
2346         }
2347
2348     discard_packet:
2349         av_free_packet(&pkt);
2350
2351         /* dump report by using the output first video and audio streams */
2352         print_report(output_files, output_streams, nb_output_streams, 0, timer_start);
2353     }
2354
2355     /* at the end of stream, we must flush the decoder buffers */
2356     for (i = 0; i < nb_input_streams; i++) {
2357         ist = &input_streams[i];
2358         if (ist->decoding_needed) {
2359             output_packet(ist, i, output_streams, nb_output_streams, NULL);
2360         }
2361     }
2362
2363     term_exit();
2364
2365     /* write the trailer if needed and close file */
2366     for(i=0;i<nb_output_files;i++) {
2367         os = output_files[i].ctx;
2368         av_write_trailer(os);
2369     }
2370
2371     /* dump report by using the first video and audio streams */
2372     print_report(output_files, output_streams, nb_output_streams, 1, timer_start);
2373
2374     /* close each encoder */
2375     for (i = 0; i < nb_output_streams; i++) {
2376         ost = &output_streams[i];
2377         if (ost->encoding_needed) {
2378             av_freep(&ost->st->codec->stats_in);
2379             avcodec_close(ost->st->codec);
2380         }
2381 #if CONFIG_AVFILTER
2382         avfilter_graph_free(&ost->graph);
2383 #endif
2384     }
2385
2386     /* close each decoder */
2387     for (i = 0; i < nb_input_streams; i++) {
2388         ist = &input_streams[i];
2389         if (ist->decoding_needed) {
2390             avcodec_close(ist->st->codec);
2391         }
2392     }
2393
2394     /* finished ! */
2395     ret = 0;
2396
2397  fail:
2398     av_freep(&bit_buffer);
2399     av_freep(&no_packet);
2400
2401     if (output_streams) {
2402         for (i = 0; i < nb_output_streams; i++) {
2403             ost = &output_streams[i];
2404             if (ost) {
2405                 if (ost->st->stream_copy)
2406                     av_freep(&ost->st->codec->extradata);
2407                 if (ost->logfile) {
2408                     fclose(ost->logfile);
2409                     ost->logfile = NULL;
2410                 }
2411                 av_fifo_free(ost->fifo); /* works even if fifo is not
2412                                              initialized but set to zero */
2413                 av_freep(&ost->st->codec->subtitle_header);
2414                 av_free(ost->pict_tmp.data[0]);
2415                 av_free(ost->forced_kf_pts);
2416                 if (ost->video_resample)
2417                     sws_freeContext(ost->img_resample_ctx);
2418                 if (ost->resample)
2419                     audio_resample_close(ost->resample);
2420                 if (ost->reformat_ctx)
2421                     av_audio_convert_free(ost->reformat_ctx);
2422                 av_dict_free(&ost->opts);
2423             }
2424         }
2425     }
2426     return ret;
2427 }
2428
2429 static int opt_format(const char *opt, const char *arg)
2430 {
2431     last_asked_format = arg;
2432     return 0;
2433 }
2434
2435 static int opt_video_rc_override_string(const char *opt, const char *arg)
2436 {
2437     video_rc_override_string = arg;
2438     return 0;
2439 }
2440
2441 static int opt_me_threshold(const char *opt, const char *arg)
2442 {
2443     me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2444     return 0;
2445 }
2446
2447 static int opt_verbose(const char *opt, const char *arg)
2448 {
2449     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2450     return 0;
2451 }
2452
2453 static int opt_frame_rate(const char *opt, const char *arg)
2454 {
2455     if (av_parse_video_rate(&frame_rate, arg) < 0) {
2456         fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2457         exit_program(1);
2458     }
2459     return 0;
2460 }
2461
2462 static int opt_frame_crop(const char *opt, const char *arg)
2463 {
2464     fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
2465     return AVERROR(EINVAL);
2466 }
2467
2468 static int opt_frame_size(const char *opt, const char *arg)
2469 {
2470     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2471         fprintf(stderr, "Incorrect frame size\n");
2472         return AVERROR(EINVAL);
2473     }
2474     return 0;
2475 }
2476
2477 static int opt_pad(const char *opt, const char *arg) {
2478     fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2479     return -1;
2480 }
2481
2482 static int opt_frame_pix_fmt(const char *opt, const char *arg)
2483 {
2484     if (strcmp(arg, "list")) {
2485         frame_pix_fmt = av_get_pix_fmt(arg);
2486         if (frame_pix_fmt == PIX_FMT_NONE) {
2487             fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2488             return AVERROR(EINVAL);
2489         }
2490     } else {
2491         show_pix_fmts();
2492         exit_program(0);
2493     }
2494     return 0;
2495 }
2496
2497 static int opt_frame_aspect_ratio(const char *opt, const char *arg)
2498 {
2499     int x = 0, y = 0;
2500     double ar = 0;
2501     const char *p;
2502     char *end;
2503
2504     p = strchr(arg, ':');
2505     if (p) {
2506         x = strtol(arg, &end, 10);
2507         if (end == p)
2508             y = strtol(end+1, &end, 10);
2509         if (x > 0 && y > 0)
2510             ar = (double)x / (double)y;
2511     } else
2512         ar = strtod(arg, NULL);
2513
2514     if (!ar) {
2515         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2516         return AVERROR(EINVAL);
2517     }
2518     frame_aspect_ratio = ar;
2519     return 0;
2520 }
2521
2522 static int opt_metadata(const char *opt, const char *arg)
2523 {
2524     char *mid= strchr(arg, '=');
2525
2526     if(!mid){
2527         fprintf(stderr, "Missing =\n");
2528         exit_program(1);
2529     }
2530     *mid++= 0;
2531
2532     av_dict_set(&metadata, arg, mid, 0);
2533
2534     return 0;
2535 }
2536
2537 static int opt_qscale(const char *opt, const char *arg)
2538 {
2539     video_qscale = parse_number_or_die(opt, arg, OPT_FLOAT, 0, 255);
2540     if (video_qscale == 0) {
2541         fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2542         return AVERROR(EINVAL);
2543     }
2544     return 0;
2545 }
2546
2547 static int opt_top_field_first(const char *opt, const char *arg)
2548 {
2549     top_field_first = parse_number_or_die(opt, arg, OPT_INT, 0, 1);
2550     return 0;
2551 }
2552
2553 static int opt_thread_count(const char *opt, const char *arg)
2554 {
2555     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2556 #if !HAVE_THREADS
2557     if (verbose >= 0)
2558         fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2559 #endif
2560     return 0;
2561 }
2562
2563 static int opt_audio_sample_fmt(const char *opt, const char *arg)
2564 {
2565     if (strcmp(arg, "list")) {
2566         audio_sample_fmt = av_get_sample_fmt(arg);
2567         if (audio_sample_fmt == AV_SAMPLE_FMT_NONE) {
2568             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg);
2569             return AVERROR(EINVAL);
2570         }
2571     } else {
2572         int i;
2573         char fmt_str[128];
2574         for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
2575             printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
2576         exit_program(0);
2577     }
2578     return 0;
2579 }
2580
2581 static int opt_audio_rate(const char *opt, const char *arg)
2582 {
2583     audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2584     return 0;
2585 }
2586
2587 static int opt_audio_channels(const char *opt, const char *arg)
2588 {
2589     audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2590     return 0;
2591 }
2592
2593 static int opt_codec(const char *opt, const char *arg)
2594 {
2595     return av_dict_set(&codec_names, opt, arg, 0);
2596 }
2597
2598 static int opt_audio_codec(const char *opt, const char *arg)
2599 {
2600     return opt_codec("codec:a", arg);
2601 }
2602
2603 static int opt_video_codec(const char *opt, const char *arg)
2604 {
2605     return opt_codec("codec:v", arg);
2606 }
2607
2608 static int opt_subtitle_codec(const char *opt, const char *arg)
2609 {
2610     return opt_codec("codec:s", arg);
2611 }
2612
2613 static int opt_data_codec(const char *opt, const char *arg)
2614 {
2615     return opt_codec("codec:d", arg);
2616 }
2617
2618 static int opt_codec_tag(const char *opt, const char *arg)
2619 {
2620     char *tail;
2621     uint32_t *codec_tag;
2622
2623     codec_tag = !strcmp(opt, "atag") ? &audio_codec_tag :
2624                 !strcmp(opt, "vtag") ? &video_codec_tag :
2625                 !strcmp(opt, "stag") ? &subtitle_codec_tag : NULL;
2626     if (!codec_tag)
2627         return -1;
2628
2629     *codec_tag = strtol(arg, &tail, 0);
2630     if (!tail || *tail)
2631         *codec_tag = AV_RL32(arg);
2632
2633     return 0;
2634 }
2635
2636 static int opt_map(const char *opt, const char *arg)
2637 {
2638     StreamMap *m = NULL;
2639     int i, negative = 0, file_idx;
2640     int sync_file_idx = -1, sync_stream_idx;
2641     char *p, *sync;
2642     char *map;
2643
2644     if (*arg == '-') {
2645         negative = 1;
2646         arg++;
2647     }
2648     map = av_strdup(arg);
2649
2650     /* parse sync stream first, just pick first matching stream */
2651     if (sync = strchr(map, ',')) {
2652         *sync = 0;
2653         sync_file_idx = strtol(sync + 1, &sync, 0);
2654         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2655             av_log(NULL, AV_LOG_ERROR, "Invalid sync file index: %d.\n", sync_file_idx);
2656             exit_program(1);
2657         }
2658         if (*sync)
2659             sync++;
2660         for (i = 0; i < input_files[sync_file_idx].ctx->nb_streams; i++)
2661             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2662                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2663                 sync_stream_idx = i;
2664                 break;
2665             }
2666         if (i == input_files[sync_file_idx].ctx->nb_streams) {
2667             av_log(NULL, AV_LOG_ERROR, "Sync stream specification in map %s does not "
2668                                        "match any streams.\n", arg);
2669             exit_program(1);
2670         }
2671     }
2672
2673
2674     file_idx = strtol(map, &p, 0);
2675     if (file_idx >= nb_input_files || file_idx < 0) {
2676         av_log(NULL, AV_LOG_ERROR, "Invalid input file index: %d.\n", file_idx);
2677         exit_program(1);
2678     }
2679     if (negative)
2680         /* disable some already defined maps */
2681         for (i = 0; i < nb_stream_maps; i++) {
2682             m = &stream_maps[i];
2683             if (check_stream_specifier(input_files[m->file_index].ctx,
2684                                        input_files[m->file_index].ctx->streams[m->stream_index],
2685                                        *p == ':' ? p + 1 : p) > 0)
2686                 m->disabled = 1;
2687         }
2688     else
2689         for (i = 0; i < input_files[file_idx].ctx->nb_streams; i++) {
2690             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2691                         *p == ':' ? p + 1 : p) <= 0)
2692                 continue;
2693             stream_maps = grow_array(stream_maps, sizeof(*stream_maps), &nb_stream_maps, nb_stream_maps + 1);
2694             m = &stream_maps[nb_stream_maps - 1];
2695
2696             m->file_index   = file_idx;
2697             m->stream_index = i;
2698
2699             if (sync_file_idx >= 0) {
2700                 m->sync_file_index   = sync_file_idx;
2701                 m->sync_stream_index = sync_stream_idx;
2702             } else {
2703                 m->sync_file_index   = file_idx;
2704                 m->sync_stream_index = i;
2705             }
2706         }
2707
2708     if (!m) {
2709         av_log(NULL, AV_LOG_ERROR, "Stream map '%s' matches no streams.\n", arg);
2710         exit_program(1);
2711     }
2712
2713     av_freep(&map);
2714     return 0;
2715 }
2716
2717 static void parse_meta_type(char *arg, char *type, int *index)
2718 {
2719     if (*arg == ':') {
2720         *type = *(++arg);
2721         switch (*arg) {
2722         case 'g':
2723             break;
2724         case 's':
2725         case 'c':
2726         case 'p':
2727             if (*(++arg) == ':')
2728                 *index = strtol(++arg, NULL, 0);
2729             break;
2730         default:
2731             fprintf(stderr, "Invalid metadata type %c.\n", *arg);
2732             exit_program(1);
2733         }
2734     } else
2735         *type = 'g';
2736 }
2737
2738 static int opt_map_metadata(const char *opt, const char *arg)
2739 {
2740     MetadataMap *m, *m1;
2741     char *p;
2742
2743     meta_data_maps = grow_array(meta_data_maps, sizeof(*meta_data_maps),
2744                                 &nb_meta_data_maps, nb_meta_data_maps + 1);
2745
2746     m = &meta_data_maps[nb_meta_data_maps - 1][1];
2747     m->file = strtol(arg, &p, 0);
2748     parse_meta_type(p, &m->type, &m->index);
2749
2750     m1 = &meta_data_maps[nb_meta_data_maps - 1][0];
2751     if (p = strchr(opt, ':'))
2752         parse_meta_type(p, &m1->type, &m1->index);
2753     else
2754         m1->type = 'g';
2755
2756     if (m->type == 'g' || m1->type == 'g')
2757         metadata_global_autocopy = 0;
2758     if (m->type == 's' || m1->type == 's')
2759         metadata_streams_autocopy = 0;
2760     if (m->type == 'c' || m1->type == 'c')
2761         metadata_chapters_autocopy = 0;
2762
2763     return 0;
2764 }
2765
2766 static int opt_input_ts_scale(const char *opt, const char *arg)
2767 {
2768     return av_dict_set(&ts_scale, opt, arg, 0);
2769 }
2770
2771 static int opt_recording_time(const char *opt, const char *arg)
2772 {
2773     recording_time = parse_time_or_die(opt, arg, 1);
2774     return 0;
2775 }
2776
2777 static int opt_start_time(const char *opt, const char *arg)
2778 {
2779     start_time = parse_time_or_die(opt, arg, 1);
2780     return 0;
2781 }
2782
2783 static int opt_input_ts_offset(const char *opt, const char *arg)
2784 {
2785     input_ts_offset = parse_time_or_die(opt, arg, 1);
2786     return 0;
2787 }
2788
2789 static enum CodecID find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
2790 {
2791     const char *codec_string = encoder ? "encoder" : "decoder";
2792     AVCodec *codec;
2793
2794     if(!name)
2795         return CODEC_ID_NONE;
2796     codec = encoder ?
2797         avcodec_find_encoder_by_name(name) :
2798         avcodec_find_decoder_by_name(name);
2799     if(!codec) {
2800         av_log(NULL, AV_LOG_ERROR, "Unknown %s '%s'\n", codec_string, name);
2801         exit_program(1);
2802     }
2803     if(codec->type != type) {
2804         av_log(NULL, AV_LOG_ERROR, "Invalid %s type '%s'\n", codec_string, name);
2805         exit_program(1);
2806     }
2807     return codec->id;
2808 }
2809
2810 static AVCodec *choose_codec(AVFormatContext *s, AVStream *st, enum AVMediaType type, AVDictionary *codec_names)
2811 {
2812     AVDictionaryEntry *e = NULL;
2813     char *codec_name = NULL;
2814     int ret;
2815
2816     while (e = av_dict_get(codec_names, "", e, AV_DICT_IGNORE_SUFFIX)) {
2817         char *p = strchr(e->key, ':');
2818
2819         if ((ret = check_stream_specifier(s, st, p ? p + 1 : "")) > 0)
2820             codec_name = e->value;
2821         else if (ret < 0)
2822             exit_program(1);
2823     }
2824
2825     if (!codec_name) {
2826         if (s->oformat) {
2827             st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename, NULL, type);
2828             return avcodec_find_encoder(st->codec->codec_id);
2829         }
2830     } else if (!strcmp(codec_name, "copy"))
2831         st->stream_copy = 1;
2832     else {
2833         st->codec->codec_id = find_codec_or_die(codec_name, type, s->iformat == NULL);
2834         return s->oformat ? avcodec_find_encoder_by_name(codec_name) :
2835                             avcodec_find_decoder_by_name(codec_name);
2836     }
2837
2838     return NULL;
2839 }
2840
2841 /**
2842  * Add all the streams from the given input file to the global
2843  * list of input streams.
2844  */
2845 static void add_input_streams(AVFormatContext *ic)
2846 {
2847     int i, rfps, rfps_base, ret;
2848
2849     for (i = 0; i < ic->nb_streams; i++) {
2850         AVStream *st = ic->streams[i];
2851         AVCodecContext *dec = st->codec;
2852         AVDictionaryEntry *e = NULL;
2853         InputStream *ist;
2854         char *scale = NULL;
2855
2856         dec->thread_count = thread_count;
2857
2858         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
2859         ist = &input_streams[nb_input_streams - 1];
2860         ist->st = st;
2861         ist->file_index = nb_input_files;
2862         ist->discard = 1;
2863         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
2864
2865         while (e = av_dict_get(ts_scale, "", e, AV_DICT_IGNORE_SUFFIX)) {
2866             char *p = strchr(e->key, ':');
2867
2868             if ((ret = check_stream_specifier(ic, st, p ? p + 1 : "")) > 0)
2869                 scale = e->value;
2870             else if (ret < 0)
2871                 exit_program(1);
2872         }
2873         if (scale)
2874             ist->ts_scale = strtod(scale, NULL);
2875
2876         ist->dec = choose_codec(ic, st, dec->codec_type, codec_names);
2877
2878         switch (dec->codec_type) {
2879         case AVMEDIA_TYPE_AUDIO:
2880             if(audio_disable)
2881                 st->discard= AVDISCARD_ALL;
2882             break;
2883         case AVMEDIA_TYPE_VIDEO:
2884             rfps      = ic->streams[i]->r_frame_rate.num;
2885             rfps_base = ic->streams[i]->r_frame_rate.den;
2886             if (dec->lowres) {
2887                 dec->flags |= CODEC_FLAG_EMU_EDGE;
2888                 dec->height >>= dec->lowres;
2889                 dec->width  >>= dec->lowres;
2890             }
2891             if(me_threshold)
2892                 dec->debug |= FF_DEBUG_MV;
2893
2894             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
2895
2896                 if (verbose >= 0)
2897                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
2898                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
2899
2900                     (float)rfps / rfps_base, rfps, rfps_base);
2901             }
2902
2903             if(video_disable)
2904                 st->discard= AVDISCARD_ALL;
2905             else if(video_discard)
2906                 st->discard= video_discard;
2907             break;
2908         case AVMEDIA_TYPE_DATA:
2909             break;
2910         case AVMEDIA_TYPE_SUBTITLE:
2911             if(subtitle_disable)
2912                 st->discard = AVDISCARD_ALL;
2913             break;
2914         case AVMEDIA_TYPE_ATTACHMENT:
2915         case AVMEDIA_TYPE_UNKNOWN:
2916             break;
2917         default:
2918             abort();
2919         }
2920     }
2921 }
2922
2923 static int opt_input_file(const char *opt, const char *filename)
2924 {
2925     AVFormatContext *ic;
2926     AVInputFormat *file_iformat = NULL;
2927     int err, i, ret;
2928     int64_t timestamp;
2929     uint8_t buf[128];
2930     AVDictionary **opts;
2931     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
2932
2933     if (last_asked_format) {
2934         if (!(file_iformat = av_find_input_format(last_asked_format))) {
2935             fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
2936             exit_program(1);
2937         }
2938         last_asked_format = NULL;
2939     }
2940
2941     if (!strcmp(filename, "-"))
2942         filename = "pipe:";
2943
2944     using_stdin |= !strncmp(filename, "pipe:", 5) ||
2945                     !strcmp(filename, "/dev/stdin");
2946
2947     /* get default parameters from command line */
2948     ic = avformat_alloc_context();
2949     if (!ic) {
2950         print_error(filename, AVERROR(ENOMEM));
2951         exit_program(1);
2952     }
2953     if (audio_sample_rate) {
2954         snprintf(buf, sizeof(buf), "%d", audio_sample_rate);
2955         av_dict_set(&format_opts, "sample_rate", buf, 0);
2956     }
2957     if (audio_channels) {
2958         snprintf(buf, sizeof(buf), "%d", audio_channels);
2959         av_dict_set(&format_opts, "channels", buf, 0);
2960     }
2961     if (frame_rate.num) {
2962         snprintf(buf, sizeof(buf), "%d/%d", frame_rate.num, frame_rate.den);
2963         av_dict_set(&format_opts, "framerate", buf, 0);
2964     }
2965     if (frame_width && frame_height) {
2966         snprintf(buf, sizeof(buf), "%dx%d", frame_width, frame_height);
2967         av_dict_set(&format_opts, "video_size", buf, 0);
2968     }
2969     if (frame_pix_fmt != PIX_FMT_NONE)
2970         av_dict_set(&format_opts, "pixel_format", av_get_pix_fmt_name(frame_pix_fmt), 0);
2971
2972     ic->flags |= AVFMT_FLAG_NONBLOCK;
2973
2974     /* open the input file with generic libav function */
2975     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
2976     if (err < 0) {
2977         print_error(filename, err);
2978         exit_program(1);
2979     }
2980     assert_avoptions(format_opts);
2981
2982     if(opt_programid) {
2983         int i, j;
2984         int found=0;
2985         for(i=0; i<ic->nb_streams; i++){
2986             ic->streams[i]->discard= AVDISCARD_ALL;
2987         }
2988         for(i=0; i<ic->nb_programs; i++){
2989             AVProgram *p= ic->programs[i];
2990             if(p->id != opt_programid){
2991                 p->discard = AVDISCARD_ALL;
2992             }else{
2993                 found=1;
2994                 for(j=0; j<p->nb_stream_indexes; j++){
2995                     ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
2996                 }
2997             }
2998         }
2999         if(!found){
3000             fprintf(stderr, "Specified program id not found\n");
3001             exit_program(1);
3002         }
3003         opt_programid=0;
3004     }
3005
3006     /* apply forced codec ids */
3007     for (i = 0; i < ic->nb_streams; i++)
3008         choose_codec(ic, ic->streams[i], ic->streams[i]->codec->codec_type, codec_names);
3009
3010     /* Set AVCodecContext options for avformat_find_stream_info */
3011     opts = setup_find_stream_info_opts(ic, codec_opts);
3012     orig_nb_streams = ic->nb_streams;
3013
3014     /* If not enough info to get the stream parameters, we decode the
3015        first frames to get it. (used in mpeg case for example) */
3016     ret = avformat_find_stream_info(ic, opts);
3017     if (ret < 0 && verbose >= 0) {
3018         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3019         av_close_input_file(ic);
3020         exit_program(1);
3021     }
3022
3023     timestamp = start_time;
3024     /* add the stream start time */
3025     if (ic->start_time != AV_NOPTS_VALUE)
3026         timestamp += ic->start_time;
3027
3028     /* if seeking requested, we execute it */
3029     if (start_time != 0) {
3030         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3031         if (ret < 0) {
3032             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3033                     filename, (double)timestamp / AV_TIME_BASE);
3034         }
3035         /* reset seek info */
3036         start_time = 0;
3037     }
3038
3039     /* update the current parameters so that they match the one of the input stream */
3040     add_input_streams(ic);
3041
3042     /* dump the file content */
3043     if (verbose >= 0)
3044         av_dump_format(ic, nb_input_files, filename, 0);
3045
3046     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3047     input_files[nb_input_files - 1].ctx        = ic;
3048     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3049     input_files[nb_input_files - 1].ts_offset  = input_ts_offset - (copy_ts ? 0 : timestamp);
3050
3051     frame_rate    = (AVRational){0, 0};
3052     frame_pix_fmt = PIX_FMT_NONE;
3053     frame_height = 0;
3054     frame_width  = 0;
3055     audio_sample_rate = 0;
3056     audio_channels    = 0;
3057     audio_sample_fmt  = AV_SAMPLE_FMT_NONE;
3058     av_dict_free(&ts_scale);
3059
3060     for (i = 0; i < orig_nb_streams; i++)
3061         av_dict_free(&opts[i]);
3062     av_freep(&opts);
3063     av_dict_free(&codec_names);
3064     uninit_opts();
3065     init_opts();
3066     return 0;
3067 }
3068
3069 static void parse_forced_key_frames(char *kf, OutputStream *ost,
3070                                     AVCodecContext *avctx)
3071 {
3072     char *p;
3073     int n = 1, i;
3074     int64_t t;
3075
3076     for (p = kf; *p; p++)
3077         if (*p == ',')
3078             n++;
3079     ost->forced_kf_count = n;
3080     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
3081     if (!ost->forced_kf_pts) {
3082         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
3083         exit_program(1);
3084     }
3085     for (i = 0; i < n; i++) {
3086         p = i ? strchr(p, ',') + 1 : kf;
3087         t = parse_time_or_die("force_key_frames", p, 1);
3088         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
3089     }
3090 }
3091
3092 static OutputStream *new_output_stream(AVFormatContext *oc, enum AVMediaType type)
3093 {
3094     OutputStream *ost;
3095     AVStream *st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3096     int idx      = oc->nb_streams - 1;
3097
3098     if (!st) {
3099         av_log(NULL, AV_LOG_ERROR, "Could not alloc stream.\n");
3100         exit_program(1);
3101     }
3102
3103     output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
3104                                 nb_output_streams + 1);
3105     ost = &output_streams[nb_output_streams - 1];
3106     ost->file_index = nb_output_files;
3107     ost->index = idx;
3108     ost->st    = st;
3109     st->codec->codec_type = type;
3110     ost->enc = choose_codec(oc, st, type, codec_names);
3111     if (ost->enc) {
3112         ost->opts  = filter_codec_opts(codec_opts, ost->enc->id, oc, st);
3113     }
3114
3115     avcodec_get_context_defaults3(st->codec, ost->enc);
3116     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
3117
3118     ost->sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
3119     return ost;
3120 }
3121
3122 static OutputStream *new_video_stream(AVFormatContext *oc)
3123 {
3124     AVStream *st;
3125     OutputStream *ost;
3126     AVCodecContext *video_enc;
3127
3128     ost = new_output_stream(oc, AVMEDIA_TYPE_VIDEO);
3129     st  = ost->st;
3130     if (!st->stream_copy) {
3131         ost->frame_aspect_ratio = frame_aspect_ratio;
3132         frame_aspect_ratio = 0;
3133 #if CONFIG_AVFILTER
3134         ost->avfilter= vfilters;
3135         vfilters = NULL;
3136 #endif
3137     }
3138
3139     ost->bitstream_filters = video_bitstream_filters;
3140     video_bitstream_filters= NULL;
3141
3142     st->codec->thread_count= thread_count;
3143
3144     video_enc = st->codec;
3145
3146     if(video_codec_tag)
3147         video_enc->codec_tag= video_codec_tag;
3148
3149     if(oc->oformat->flags & AVFMT_GLOBALHEADER) {
3150         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3151     }
3152
3153     if (st->stream_copy) {
3154         video_enc->sample_aspect_ratio =
3155         st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3156     } else {
3157         const char *p;
3158         int i;
3159
3160         if (frame_rate.num)
3161             ost->frame_rate = frame_rate;
3162
3163         video_enc->width = frame_width;
3164         video_enc->height = frame_height;
3165         video_enc->pix_fmt = frame_pix_fmt;
3166         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3167
3168         if (video_qscale || same_quant) {
3169             video_enc->flags |= CODEC_FLAG_QSCALE;
3170             video_enc->global_quality = FF_QP2LAMBDA * video_qscale;
3171         }
3172
3173         if(intra_matrix)
3174             video_enc->intra_matrix = intra_matrix;
3175         if(inter_matrix)
3176             video_enc->inter_matrix = inter_matrix;
3177
3178         p= video_rc_override_string;
3179         for(i=0; p; i++){
3180             int start, end, q;
3181             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3182             if(e!=3){
3183                 fprintf(stderr, "error parsing rc_override\n");
3184                 exit_program(1);
3185             }
3186             video_enc->rc_override=
3187                 av_realloc(video_enc->rc_override,
3188                            sizeof(RcOverride)*(i+1));
3189             video_enc->rc_override[i].start_frame= start;
3190             video_enc->rc_override[i].end_frame  = end;
3191             if(q>0){
3192                 video_enc->rc_override[i].qscale= q;
3193                 video_enc->rc_override[i].quality_factor= 1.0;
3194             }
3195             else{
3196                 video_enc->rc_override[i].qscale= 0;
3197                 video_enc->rc_override[i].quality_factor= -q/100.0;
3198             }
3199             p= strchr(p, '/');
3200             if(p) p++;
3201         }
3202         video_enc->rc_override_count=i;
3203         if (!video_enc->rc_initial_buffer_occupancy)
3204             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3205         video_enc->me_threshold= me_threshold;
3206         video_enc->intra_dc_precision= intra_dc_precision - 8;
3207
3208         if (do_psnr)
3209             video_enc->flags|= CODEC_FLAG_PSNR;
3210
3211         /* two pass mode */
3212         if (do_pass) {
3213             if (do_pass == 1) {
3214                 video_enc->flags |= CODEC_FLAG_PASS1;
3215             } else {
3216                 video_enc->flags |= CODEC_FLAG_PASS2;
3217             }
3218         }
3219
3220         if (forced_key_frames)
3221             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3222     }
3223     if (video_language) {
3224         av_dict_set(&st->metadata, "language", video_language, 0);
3225         av_freep(&video_language);
3226     }
3227
3228     /* reset some key parameters */
3229     video_disable = 0;
3230     av_freep(&forced_key_frames);
3231     frame_pix_fmt = PIX_FMT_NONE;
3232     return ost;
3233 }
3234
3235 static OutputStream *new_audio_stream(AVFormatContext *oc)
3236 {
3237     AVStream *st;
3238     OutputStream *ost;
3239     AVCodecContext *audio_enc;
3240
3241     ost = new_output_stream(oc, AVMEDIA_TYPE_AUDIO);
3242     st  = ost->st;
3243
3244     ost->bitstream_filters = audio_bitstream_filters;
3245     audio_bitstream_filters= NULL;
3246
3247     st->codec->thread_count= thread_count;
3248
3249     audio_enc = st->codec;
3250     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3251
3252     if(audio_codec_tag)
3253         audio_enc->codec_tag= audio_codec_tag;
3254
3255     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3256         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3257     }
3258     if (!st->stream_copy) {
3259         if (audio_qscale > QSCALE_NONE) {
3260             audio_enc->flags |= CODEC_FLAG_QSCALE;
3261             audio_enc->global_quality = FF_QP2LAMBDA * audio_qscale;
3262         }
3263         if (audio_channels)
3264             audio_enc->channels = audio_channels;
3265         if (audio_sample_fmt != AV_SAMPLE_FMT_NONE)
3266             audio_enc->sample_fmt = audio_sample_fmt;
3267         if (audio_sample_rate)
3268             audio_enc->sample_rate = audio_sample_rate;
3269     }
3270     if (audio_language) {
3271         av_dict_set(&st->metadata, "language", audio_language, 0);
3272         av_freep(&audio_language);
3273     }
3274
3275     /* reset some key parameters */
3276     audio_disable = 0;
3277
3278     return ost;
3279 }
3280
3281 static OutputStream *new_data_stream(AVFormatContext *oc)
3282 {
3283     AVStream *st;
3284     OutputStream *ost;
3285     AVCodecContext *data_enc;
3286
3287     ost = new_output_stream(oc, AVMEDIA_TYPE_DATA);
3288     st  = ost->st;
3289     data_enc = st->codec;
3290     if (!st->stream_copy) {
3291         fprintf(stderr, "Data stream encoding not supported yet (only streamcopy)\n");
3292         exit_program(1);
3293     }
3294
3295     if (data_codec_tag)
3296         data_enc->codec_tag= data_codec_tag;
3297
3298     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3299         data_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3300     }
3301
3302     data_disable = 0;
3303     return ost;
3304 }
3305
3306 static OutputStream *new_subtitle_stream(AVFormatContext *oc)
3307 {
3308     AVStream *st;
3309     OutputStream *ost;
3310     AVCodecContext *subtitle_enc;
3311
3312     ost = new_output_stream(oc, AVMEDIA_TYPE_SUBTITLE);
3313     st  = ost->st;
3314     subtitle_enc = st->codec;
3315
3316     ost->bitstream_filters = subtitle_bitstream_filters;
3317     subtitle_bitstream_filters= NULL;
3318
3319     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3320
3321     if(subtitle_codec_tag)
3322         subtitle_enc->codec_tag= subtitle_codec_tag;
3323
3324     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3325         subtitle_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3326     }
3327
3328     if (subtitle_language) {
3329         av_dict_set(&st->metadata, "language", subtitle_language, 0);
3330         av_freep(&subtitle_language);
3331     }
3332
3333     subtitle_disable = 0;
3334     return ost;
3335 }
3336
3337 /* arg format is "output-stream-index:streamid-value". */
3338 static int opt_streamid(const char *opt, const char *arg)
3339 {
3340     int idx;
3341     char *p;
3342     char idx_str[16];
3343
3344     av_strlcpy(idx_str, arg, sizeof(idx_str));
3345     p = strchr(idx_str, ':');
3346     if (!p) {
3347         fprintf(stderr,
3348                 "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3349                 arg, opt);
3350         exit_program(1);
3351     }
3352     *p++ = '\0';
3353     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, INT_MAX);
3354     streamid_map = grow_array(streamid_map, sizeof(*streamid_map), &nb_streamid_map, idx+1);
3355     streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3356     return 0;
3357 }
3358
3359 static int copy_chapters(int infile, int outfile)
3360 {
3361     AVFormatContext *is = input_files[infile].ctx;
3362     AVFormatContext *os = output_files[outfile].ctx;
3363     int i;
3364
3365     for (i = 0; i < is->nb_chapters; i++) {
3366         AVChapter *in_ch = is->chapters[i], *out_ch;
3367         int64_t ts_off   = av_rescale_q(start_time - input_files[infile].ts_offset,
3368                                       AV_TIME_BASE_Q, in_ch->time_base);
3369         int64_t rt       = (recording_time == INT64_MAX) ? INT64_MAX :
3370                            av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
3371
3372
3373         if (in_ch->end < ts_off)
3374             continue;
3375         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
3376             break;
3377
3378         out_ch = av_mallocz(sizeof(AVChapter));
3379         if (!out_ch)
3380             return AVERROR(ENOMEM);
3381
3382         out_ch->id        = in_ch->id;
3383         out_ch->time_base = in_ch->time_base;
3384         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
3385         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
3386
3387         if (metadata_chapters_autocopy)
3388             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
3389
3390         os->nb_chapters++;
3391         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
3392         if (!os->chapters)
3393             return AVERROR(ENOMEM);
3394         os->chapters[os->nb_chapters - 1] = out_ch;
3395     }
3396     return 0;
3397 }
3398
3399 static int read_avserver_streams(AVFormatContext *s, const char *filename)
3400 {
3401     int i, err;
3402     AVFormatContext *ic = NULL;
3403
3404     err = avformat_open_input(&ic, filename, NULL, NULL);
3405     if (err < 0)
3406         return err;
3407     /* copy stream format */
3408     for(i=0;i<ic->nb_streams;i++) {
3409         AVStream *st;
3410         OutputStream *ost;
3411         AVCodec *codec;
3412
3413         codec = avcodec_find_encoder(ic->streams[i]->codec->codec_id);
3414         ost   = new_output_stream(s, codec->type);
3415         st    = ost->st;
3416
3417         // FIXME: a more elegant solution is needed
3418         memcpy(st, ic->streams[i], sizeof(AVStream));
3419         st->info = NULL;
3420         avcodec_copy_context(st->codec, ic->streams[i]->codec);
3421
3422         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && !st->stream_copy)
3423             choose_sample_fmt(st, codec);
3424         else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && !st->stream_copy)
3425             choose_pixel_fmt(st, codec);
3426     }
3427
3428     av_close_input_file(ic);
3429     return 0;
3430 }
3431
3432 static void opt_output_file(const char *filename)
3433 {
3434     AVFormatContext *oc;
3435     int i, err;
3436     AVOutputFormat *file_oformat;
3437     OutputStream *ost;
3438     InputStream  *ist;
3439
3440     if (!strcmp(filename, "-"))
3441         filename = "pipe:";
3442
3443     oc = avformat_alloc_context();
3444     if (!oc) {
3445         print_error(filename, AVERROR(ENOMEM));
3446         exit_program(1);
3447     }
3448
3449     if (last_asked_format) {
3450         file_oformat = av_guess_format(last_asked_format, NULL, NULL);
3451         if (!file_oformat) {
3452             fprintf(stderr, "Requested output format '%s' is not a suitable output format\n", last_asked_format);
3453             exit_program(1);
3454         }
3455         last_asked_format = NULL;
3456     } else {
3457         file_oformat = av_guess_format(NULL, filename, NULL);
3458         if (!file_oformat) {
3459             fprintf(stderr, "Unable to find a suitable output format for '%s'\n",
3460                     filename);
3461             exit_program(1);
3462         }
3463     }
3464
3465     oc->oformat = file_oformat;
3466     av_strlcpy(oc->filename, filename, sizeof(oc->filename));
3467
3468     if (!strcmp(file_oformat->name, "ffm") &&
3469         av_strstart(filename, "http:", NULL)) {
3470         /* special case for files sent to avserver: we get the stream
3471            parameters from avserver */
3472         int err = read_avserver_streams(oc, filename);
3473         if (err < 0) {
3474             print_error(filename, err);
3475             exit_program(1);
3476         }
3477     } else if (!nb_stream_maps) {
3478         /* pick the "best" stream of each type */
3479 #define NEW_STREAM(type, index)\
3480         if (index >= 0) {\
3481             ost = new_ ## type ## _stream(oc);\
3482             ost->source_index = index;\
3483             ost->sync_ist     = &input_streams[index];\
3484             input_streams[index].discard = 0;\
3485         }
3486
3487         /* video: highest resolution */
3488         if (!video_disable && oc->oformat->video_codec != CODEC_ID_NONE) {
3489             int area = 0, idx = -1;
3490             for (i = 0; i < nb_input_streams; i++) {
3491                 ist = &input_streams[i];
3492                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3493                     ist->st->codec->width * ist->st->codec->height > area) {
3494                     area = ist->st->codec->width * ist->st->codec->height;
3495                     idx = i;
3496                 }
3497             }
3498             NEW_STREAM(video, idx);
3499         }
3500
3501         /* audio: most channels */
3502         if (!audio_disable && oc->oformat->audio_codec != CODEC_ID_NONE) {
3503             int channels = 0, idx = -1;
3504             for (i = 0; i < nb_input_streams; i++) {
3505                 ist = &input_streams[i];
3506                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
3507                     ist->st->codec->channels > channels) {
3508                     channels = ist->st->codec->channels;
3509                     idx = i;
3510                 }
3511             }
3512             NEW_STREAM(audio, idx);
3513         }
3514
3515         /* subtitles: pick first */
3516         if (!subtitle_disable && oc->oformat->subtitle_codec != CODEC_ID_NONE) {
3517             for (i = 0; i < nb_input_streams; i++)
3518                 if (input_streams[i].st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3519                     NEW_STREAM(subtitle, i);
3520                     break;
3521                 }
3522         }
3523         /* do something with data? */
3524     } else {
3525         for (i = 0; i < nb_stream_maps; i++) {
3526             StreamMap *map = &stream_maps[i];
3527
3528             if (map->disabled)
3529                 continue;
3530
3531             ist = &input_streams[input_files[map->file_index].ist_index + map->stream_index];
3532             switch (ist->st->codec->codec_type) {
3533             case AVMEDIA_TYPE_VIDEO:    ost = new_video_stream(oc);    break;
3534             case AVMEDIA_TYPE_AUDIO:    ost = new_audio_stream(oc);    break;
3535             case AVMEDIA_TYPE_SUBTITLE: ost = new_subtitle_stream(oc); break;
3536             case AVMEDIA_TYPE_DATA:     ost = new_data_stream(oc);     break;
3537             default:
3538                 av_log(NULL, AV_LOG_ERROR, "Cannot map stream #%d.%d - unsupported type.\n",
3539                        map->file_index, map->stream_index);
3540                 exit_program(1);
3541             }
3542
3543             ost->source_index = input_files[map->file_index].ist_index + map->stream_index;
3544             ost->sync_ist = &input_streams[input_files[map->sync_file_index].ist_index +
3545                                            map->sync_stream_index];
3546             ist->discard = 0;
3547         }
3548     }
3549
3550     av_dict_copy(&oc->metadata, metadata, 0);
3551     av_dict_free(&metadata);
3552
3553
3554     output_files = grow_array(output_files, sizeof(*output_files), &nb_output_files, nb_output_files + 1);
3555     output_files[nb_output_files - 1].ctx       = oc;
3556     output_files[nb_output_files - 1].ost_index = nb_output_streams - oc->nb_streams;
3557     output_files[nb_output_files - 1].recording_time = recording_time;
3558     output_files[nb_output_files - 1].start_time     = start_time;
3559     av_dict_copy(&output_files[nb_output_files - 1].opts, format_opts, 0);
3560
3561     /* check filename in case of an image number is expected */
3562     if (oc->oformat->flags & AVFMT_NEEDNUMBER) {
3563         if (!av_filename_number_test(oc->filename)) {
3564             print_error(oc->filename, AVERROR(EINVAL));
3565             exit_program(1);
3566         }
3567     }
3568
3569     if (!(oc->oformat->flags & AVFMT_NOFILE)) {
3570         /* test if it already exists to avoid loosing precious files */
3571         if (!file_overwrite &&
3572             (strchr(filename, ':') == NULL ||
3573              filename[1] == ':' ||
3574              av_strstart(filename, "file:", NULL))) {
3575             if (avio_check(filename, 0) == 0) {
3576                 if (!using_stdin) {
3577                     fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3578                     fflush(stderr);
3579                     if (!read_yesno()) {
3580                         fprintf(stderr, "Not overwriting - exiting\n");
3581                         exit_program(1);
3582                     }
3583                 }
3584                 else {
3585                     fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
3586                     exit_program(1);
3587                 }
3588             }
3589         }
3590
3591         /* open the file */
3592         if ((err = avio_open(&oc->pb, filename, AVIO_FLAG_WRITE)) < 0) {
3593             print_error(filename, err);
3594             exit_program(1);
3595         }
3596     }
3597
3598     oc->preload= (int)(mux_preload*AV_TIME_BASE);
3599     oc->max_delay= (int)(mux_max_delay*AV_TIME_BASE);
3600     oc->flags |= AVFMT_FLAG_NONBLOCK;
3601
3602     /* copy chapters */
3603     if (chapters_input_file >= nb_input_files) {
3604         if (chapters_input_file == INT_MAX) {
3605             /* copy chapters from the first input file that has them*/
3606             chapters_input_file = -1;
3607             for (i = 0; i < nb_input_files; i++)
3608                 if (input_files[i].ctx->nb_chapters) {
3609                     chapters_input_file = i;
3610                     break;
3611                 }
3612         } else {
3613             av_log(NULL, AV_LOG_ERROR, "Invalid input file index %d in chapter mapping.\n",
3614                    chapters_input_file);
3615             exit_program(1);
3616         }
3617     }
3618     if (chapters_input_file >= 0)
3619         copy_chapters(chapters_input_file, nb_output_files - 1);
3620
3621     /* copy metadata */
3622     for (i = 0; i < nb_meta_data_maps; i++) {
3623         AVFormatContext *files[2];
3624         AVDictionary    **meta[2];
3625         int j;
3626
3627 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
3628         if ((index) < 0 || (index) >= (nb_elems)) {\
3629             av_log(NULL, AV_LOG_ERROR, "Invalid %s index %d while processing metadata maps\n",\
3630                      (desc), (index));\
3631             exit_program(1);\
3632         }
3633
3634         int in_file_index = meta_data_maps[i][1].file;
3635         if (in_file_index < 0)
3636             continue;
3637         METADATA_CHECK_INDEX(in_file_index, nb_input_files, "input file")
3638
3639         files[0] = oc;
3640         files[1] = input_files[in_file_index].ctx;
3641
3642         for (j = 0; j < 2; j++) {
3643             MetadataMap *map = &meta_data_maps[i][j];
3644
3645             switch (map->type) {
3646             case 'g':
3647                 meta[j] = &files[j]->metadata;
3648                 break;
3649             case 's':
3650                 METADATA_CHECK_INDEX(map->index, files[j]->nb_streams, "stream")
3651                 meta[j] = &files[j]->streams[map->index]->metadata;
3652                 break;
3653             case 'c':
3654                 METADATA_CHECK_INDEX(map->index, files[j]->nb_chapters, "chapter")
3655                 meta[j] = &files[j]->chapters[map->index]->metadata;
3656                 break;
3657             case 'p':
3658                 METADATA_CHECK_INDEX(map->index, files[j]->nb_programs, "program")
3659                 meta[j] = &files[j]->programs[map->index]->metadata;
3660                 break;
3661