avconv: rewrite -qscale and -aq handling.
[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 /* indexed by output file stream index */
101 static int *streamid_map = NULL;
102 static int nb_streamid_map = 0;
103
104 static int frame_width  = 0;
105 static int frame_height = 0;
106 static float frame_aspect_ratio = 0;
107 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
108 static AVRational frame_rate;
109 static uint16_t *intra_matrix = NULL;
110 static uint16_t *inter_matrix = NULL;
111 static const char *video_rc_override_string=NULL;
112 static int video_discard = 0;
113 static int same_quant = 0;
114 static int do_deinterlace = 0;
115 static int top_field_first = -1;
116 static int me_threshold = 0;
117 static int intra_dc_precision = 8;
118 static int qp_hist = 0;
119 #if CONFIG_AVFILTER
120 static char *vfilters = NULL;
121 #endif
122
123 static int file_overwrite = 0;
124 static int do_benchmark = 0;
125 static int do_hex_dump = 0;
126 static int do_pkt_dump = 0;
127 static int do_psnr = 0;
128 static int do_pass = 0;
129 static char *pass_logfilename_prefix = NULL;
130 static int video_sync_method= -1;
131 static int audio_sync_method= 0;
132 static float audio_drift_threshold= 0.1;
133 static int copy_ts= 0;
134 static int copy_tb;
135 static int opt_shortest = 0;
136 static char *vstats_filename;
137 static FILE *vstats_file;
138 static int copy_initial_nonkeyframes = 0;
139
140 static int audio_volume = 256;
141
142 static int exit_on_error = 0;
143 static int using_stdin = 0;
144 static int verbose = 1;
145 static int64_t video_size = 0;
146 static int64_t audio_size = 0;
147 static int64_t extra_size = 0;
148 static int nb_frames_dup = 0;
149 static int nb_frames_drop = 0;
150 static int input_sync;
151 static int force_fps = 0;
152 static char *forced_key_frames = NULL;
153
154 static float dts_delta_threshold = 10;
155
156 static uint8_t *audio_buf;
157 static uint8_t *audio_out;
158 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
159
160 static short *samples;
161
162 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
163
164 typedef struct InputStream {
165     int file_index;
166     AVStream *st;
167     int discard;             /* true if stream data should be discarded */
168     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
169     AVCodec *dec;
170
171     int64_t       start;     /* time when read started */
172     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
173                                 is not defined */
174     int64_t       pts;       /* current pts */
175     PtsCorrectionContext pts_ctx;
176     double ts_scale;
177     int is_start;            /* is 1 at the start and after a discontinuity */
178     int showed_multi_packet_warning;
179     AVDictionary *opts;
180 } InputStream;
181
182 typedef struct InputFile {
183     AVFormatContext *ctx;
184     int eof_reached;      /* true if eof reached */
185     int ist_index;        /* index of first stream in ist_table */
186     int buffer_size;      /* current total buffer size */
187     int64_t ts_offset;
188     int nb_streams;       /* number of stream that avconv is aware of; may be different
189                              from ctx.nb_streams if new streams appear during av_read_frame() */
190     int rate_emu;
191 } InputFile;
192
193 typedef struct OutputStream {
194     int file_index;          /* file index */
195     int index;               /* stream index in the output file */
196     int source_index;        /* InputStream index */
197     AVStream *st;            /* stream in the output file */
198     int encoding_needed;     /* true if encoding needed for this stream */
199     int frame_number;
200     /* input pts and corresponding output pts
201        for A/V sync */
202     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
203     struct InputStream *sync_ist; /* input stream to sync against */
204     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
205     AVBitStreamFilterContext *bitstream_filters;
206     AVCodec *enc;
207     int64_t max_frames;
208
209     /* video only */
210     int video_resample;
211     AVFrame pict_tmp;      /* temporary image for resampling */
212     struct SwsContext *img_resample_ctx; /* for image resampling */
213     int resample_height;
214     int resample_width;
215     int resample_pix_fmt;
216     AVRational frame_rate;
217
218     float frame_aspect_ratio;
219
220     /* forced key frames */
221     int64_t *forced_kf_pts;
222     int forced_kf_count;
223     int forced_kf_index;
224
225     /* audio only */
226     int audio_resample;
227     ReSampleContext *resample; /* for audio resampling */
228     int resample_sample_fmt;
229     int resample_channels;
230     int resample_sample_rate;
231     int reformat_pair;
232     AVAudioConvert *reformat_ctx;
233     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
234     FILE *logfile;
235
236 #if CONFIG_AVFILTER
237     AVFilterContext *output_video_filter;
238     AVFilterContext *input_video_filter;
239     AVFilterBufferRef *picref;
240     char *avfilter;
241     AVFilterGraph *graph;
242 #endif
243
244    int sws_flags;
245    AVDictionary *opts;
246    int is_past_recording_time;
247 } OutputStream;
248
249
250 typedef struct OutputFile {
251     AVFormatContext *ctx;
252     AVDictionary *opts;
253     int ost_index;       /* index of the first stream in output_streams */
254     int64_t recording_time; /* desired length of the resulting file in microseconds */
255     int64_t start_time;     /* start time in microseconds */
256     uint64_t limit_filesize;
257 } OutputFile;
258
259 static InputStream *input_streams = NULL;
260 static int         nb_input_streams = 0;
261 static InputFile   *input_files   = NULL;
262 static int         nb_input_files   = 0;
263
264 static OutputStream *output_streams = NULL;
265 static int        nb_output_streams = 0;
266 static OutputFile   *output_files   = NULL;
267 static int        nb_output_files   = 0;
268
269 typedef struct OptionsContext {
270     /* input/output options */
271     int64_t start_time;
272     const char *format;
273
274     SpecifierOpt *codec_names;
275     int        nb_codec_names;
276     SpecifierOpt *audio_channels;
277     int        nb_audio_channels;
278     SpecifierOpt *audio_sample_rate;
279     int        nb_audio_sample_rate;
280
281     /* input options */
282     int64_t input_ts_offset;
283     int rate_emu;
284
285     SpecifierOpt *ts_scale;
286     int        nb_ts_scale;
287
288     /* output options */
289     StreamMap *stream_maps;
290     int     nb_stream_maps;
291     /* first item specifies output metadata, second is input */
292     MetadataMap (*meta_data_maps)[2];
293     int nb_meta_data_maps;
294     int metadata_global_manual;
295     int metadata_streams_manual;
296     int metadata_chapters_manual;
297
298     int chapters_input_file;
299
300     int64_t recording_time;
301     uint64_t limit_filesize;
302     float mux_preload;
303     float mux_max_delay;
304
305     int video_disable;
306     int audio_disable;
307     int subtitle_disable;
308     int data_disable;
309
310     SpecifierOpt *metadata;
311     int        nb_metadata;
312     SpecifierOpt *max_frames;
313     int        nb_max_frames;
314     SpecifierOpt *bitstream_filters;
315     int        nb_bitstream_filters;
316     SpecifierOpt *codec_tags;
317     int        nb_codec_tags;
318     SpecifierOpt *sample_fmts;
319     int        nb_sample_fmts;
320     SpecifierOpt *qscale;
321     int        nb_qscale;
322 } OptionsContext;
323
324 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
325 {\
326     int i, ret;\
327     for (i = 0; i < o->nb_ ## name; i++) {\
328         char *spec = o->name[i].specifier;\
329         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
330             outvar = o->name[i].u.type;\
331         else if (ret < 0)\
332             exit_program(1);\
333     }\
334 }
335
336 static void reset_options(OptionsContext *o)
337 {
338     const OptionDef *po = options;
339
340     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
341     while (po->name) {
342         void *dst = (uint8_t*)o + po->u.off;
343
344         if (po->flags & OPT_SPEC) {
345             SpecifierOpt **so = dst;
346             int i, *count = (int*)(so + 1);
347             for (i = 0; i < *count; i++) {
348                 av_freep(&(*so)[i].specifier);
349                 if (po->flags & OPT_STRING)
350                     av_freep(&(*so)[i].u.str);
351             }
352             av_freep(so);
353             *count = 0;
354         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
355             av_freep(dst);
356         po++;
357     }
358
359     av_freep(&o->stream_maps);
360     av_freep(&o->meta_data_maps);
361
362     memset(o, 0, sizeof(*o));
363
364     o->mux_preload    = 0.5;
365     o->mux_max_delay  = 0.7;
366     o->recording_time = INT64_MAX;
367     o->limit_filesize = UINT64_MAX;
368     o->chapters_input_file = INT_MAX;
369
370     uninit_opts();
371     init_opts();
372 }
373
374 #if CONFIG_AVFILTER
375
376 static int configure_video_filters(InputStream *ist, OutputStream *ost)
377 {
378     AVFilterContext *last_filter, *filter;
379     /** filter graph containing all filters including input & output */
380     AVCodecContext *codec = ost->st->codec;
381     AVCodecContext *icodec = ist->st->codec;
382     FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
383     AVRational sample_aspect_ratio;
384     char args[255];
385     int ret;
386
387     ost->graph = avfilter_graph_alloc();
388
389     if (ist->st->sample_aspect_ratio.num){
390         sample_aspect_ratio = ist->st->sample_aspect_ratio;
391     }else
392         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
393
394     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
395              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
396              sample_aspect_ratio.num, sample_aspect_ratio.den);
397
398     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
399                                        "src", args, NULL, ost->graph);
400     if (ret < 0)
401         return ret;
402     ret = avfilter_graph_create_filter(&ost->output_video_filter, &ffsink,
403                                        "out", NULL, &ffsink_ctx, ost->graph);
404     if (ret < 0)
405         return ret;
406     last_filter = ost->input_video_filter;
407
408     if (codec->width  != icodec->width || codec->height != icodec->height) {
409         snprintf(args, 255, "%d:%d:flags=0x%X",
410                  codec->width,
411                  codec->height,
412                  ost->sws_flags);
413         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
414                                                 NULL, args, NULL, ost->graph)) < 0)
415             return ret;
416         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
417             return ret;
418         last_filter = filter;
419     }
420
421     snprintf(args, sizeof(args), "flags=0x%X", ost->sws_flags);
422     ost->graph->scale_sws_opts = av_strdup(args);
423
424     if (ost->avfilter) {
425         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
426         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
427
428         outputs->name    = av_strdup("in");
429         outputs->filter_ctx = last_filter;
430         outputs->pad_idx = 0;
431         outputs->next    = NULL;
432
433         inputs->name    = av_strdup("out");
434         inputs->filter_ctx = ost->output_video_filter;
435         inputs->pad_idx = 0;
436         inputs->next    = NULL;
437
438         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, inputs, outputs, NULL)) < 0)
439             return ret;
440         av_freep(&ost->avfilter);
441     } else {
442         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
443             return ret;
444     }
445
446     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
447         return ret;
448
449     codec->width  = ost->output_video_filter->inputs[0]->w;
450     codec->height = ost->output_video_filter->inputs[0]->h;
451     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
452         ost->frame_aspect_ratio ? // overridden by the -aspect cli option
453         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
454         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
455
456     return 0;
457 }
458 #endif /* CONFIG_AVFILTER */
459
460 static void term_exit(void)
461 {
462     av_log(NULL, AV_LOG_QUIET, "");
463 }
464
465 static volatile int received_sigterm = 0;
466 static volatile int received_nb_signals = 0;
467
468 static void
469 sigterm_handler(int sig)
470 {
471     received_sigterm = sig;
472     received_nb_signals++;
473     term_exit();
474 }
475
476 static void term_init(void)
477 {
478     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
479     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
480 #ifdef SIGXCPU
481     signal(SIGXCPU, sigterm_handler);
482 #endif
483 }
484
485 static int decode_interrupt_cb(void)
486 {
487     return received_nb_signals > 1;
488 }
489
490 void exit_program(int ret)
491 {
492     int i;
493
494     /* close files */
495     for(i=0;i<nb_output_files;i++) {
496         AVFormatContext *s = output_files[i].ctx;
497         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
498             avio_close(s->pb);
499         avformat_free_context(s);
500         av_dict_free(&output_files[i].opts);
501     }
502     for(i=0;i<nb_input_files;i++) {
503         av_close_input_file(input_files[i].ctx);
504     }
505     for (i = 0; i < nb_input_streams; i++)
506         av_dict_free(&input_streams[i].opts);
507
508     av_free(intra_matrix);
509     av_free(inter_matrix);
510
511     if (vstats_file)
512         fclose(vstats_file);
513     av_free(vstats_filename);
514
515     av_freep(&input_streams);
516     av_freep(&input_files);
517     av_freep(&output_streams);
518     av_freep(&output_files);
519
520     uninit_opts();
521     av_free(audio_buf);
522     av_free(audio_out);
523     allocated_audio_buf_size= allocated_audio_out_size= 0;
524     av_free(samples);
525
526 #if CONFIG_AVFILTER
527     avfilter_uninit();
528 #endif
529
530     if (received_sigterm) {
531         fprintf(stderr,
532             "Received signal %d: terminating.\n",
533             (int) received_sigterm);
534         exit (255);
535     }
536
537     exit(ret); /* not all OS-es handle main() return value */
538 }
539
540 static void assert_avoptions(AVDictionary *m)
541 {
542     AVDictionaryEntry *t;
543     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
544         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
545         exit_program(1);
546     }
547 }
548
549 static void assert_codec_experimental(AVCodecContext *c, int encoder)
550 {
551     const char *codec_string = encoder ? "encoder" : "decoder";
552     AVCodec *codec;
553     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
554         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
555         av_log(NULL, AV_LOG_ERROR, "%s '%s' is experimental and might produce bad "
556                 "results.\nAdd '-strict experimental' if you want to use it.\n",
557                 codec_string, c->codec->name);
558         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
559         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
560             av_log(NULL, AV_LOG_ERROR, "Or use the non experimental %s '%s'.\n",
561                    codec_string, codec->name);
562         exit_program(1);
563     }
564 }
565
566 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
567 {
568     if(codec && codec->sample_fmts){
569         const enum AVSampleFormat *p= codec->sample_fmts;
570         for(; *p!=-1; p++){
571             if(*p == st->codec->sample_fmt)
572                 break;
573         }
574         if (*p == -1) {
575             av_log(NULL, AV_LOG_WARNING,
576                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
577                    av_get_sample_fmt_name(st->codec->sample_fmt),
578                    codec->name,
579                    av_get_sample_fmt_name(codec->sample_fmts[0]));
580             st->codec->sample_fmt = codec->sample_fmts[0];
581         }
582     }
583 }
584
585 /**
586  * Update the requested input sample format based on the output sample format.
587  * This is currently only used to request float output from decoders which
588  * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
589  * Ideally this will be removed in the future when decoders do not do format
590  * conversion and only output in their native format.
591  */
592 static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
593                               AVCodecContext *enc)
594 {
595     /* if sample formats match or a decoder sample format has already been
596        requested, just return */
597     if (enc->sample_fmt == dec->sample_fmt ||
598         dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
599         return;
600
601     /* if decoder supports more than one output format */
602     if (dec_codec && dec_codec->sample_fmts &&
603         dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
604         dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
605         const enum AVSampleFormat *p;
606         int min_dec = -1, min_inc = -1;
607
608         /* find a matching sample format in the encoder */
609         for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
610             if (*p == enc->sample_fmt) {
611                 dec->request_sample_fmt = *p;
612                 return;
613             } else if (*p > enc->sample_fmt) {
614                 min_inc = FFMIN(min_inc, *p - enc->sample_fmt);
615             } else
616                 min_dec = FFMIN(min_dec, enc->sample_fmt - *p);
617         }
618
619         /* if none match, provide the one that matches quality closest */
620         dec->request_sample_fmt = min_inc > 0 ? enc->sample_fmt + min_inc :
621                                   enc->sample_fmt - min_dec;
622     }
623 }
624
625 static void choose_sample_rate(AVStream *st, AVCodec *codec)
626 {
627     if(codec && codec->supported_samplerates){
628         const int *p= codec->supported_samplerates;
629         int best=0;
630         int best_dist=INT_MAX;
631         for(; *p; p++){
632             int dist= abs(st->codec->sample_rate - *p);
633             if(dist < best_dist){
634                 best_dist= dist;
635                 best= *p;
636             }
637         }
638         if(best_dist){
639             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
640         }
641         st->codec->sample_rate= best;
642     }
643 }
644
645 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
646 {
647     if(codec && codec->pix_fmts){
648         const enum PixelFormat *p= codec->pix_fmts;
649         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
650             if(st->codec->codec_id==CODEC_ID_MJPEG){
651                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
652             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
653                 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};
654             }
655         }
656         for(; *p!=-1; p++){
657             if(*p == st->codec->pix_fmt)
658                 break;
659         }
660         if (*p == -1) {
661             if(st->codec->pix_fmt != PIX_FMT_NONE)
662                 av_log(NULL, AV_LOG_WARNING,
663                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
664                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
665                         codec->name,
666                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
667             st->codec->pix_fmt = codec->pix_fmts[0];
668         }
669     }
670 }
671
672 static double
673 get_sync_ipts(const OutputStream *ost)
674 {
675     const InputStream *ist = ost->sync_ist;
676     OutputFile *of = &output_files[ost->file_index];
677     return (double)(ist->pts - of->start_time)/AV_TIME_BASE;
678 }
679
680 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
681     int ret;
682
683     while(bsfc){
684         AVPacket new_pkt= *pkt;
685         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
686                                           &new_pkt.data, &new_pkt.size,
687                                           pkt->data, pkt->size,
688                                           pkt->flags & AV_PKT_FLAG_KEY);
689         if(a>0){
690             av_free_packet(pkt);
691             new_pkt.destruct= av_destruct_packet;
692         } else if(a<0){
693             fprintf(stderr, "%s failed for stream %d, codec %s",
694                     bsfc->filter->name, pkt->stream_index,
695                     avctx->codec ? avctx->codec->name : "copy");
696             print_error("", a);
697             if (exit_on_error)
698                 exit_program(1);
699         }
700         *pkt= new_pkt;
701
702         bsfc= bsfc->next;
703     }
704
705     ret= av_interleaved_write_frame(s, pkt);
706     if(ret < 0){
707         print_error("av_interleaved_write_frame()", ret);
708         exit_program(1);
709     }
710 }
711
712 static void do_audio_out(AVFormatContext *s,
713                          OutputStream *ost,
714                          InputStream *ist,
715                          unsigned char *buf, int size)
716 {
717     uint8_t *buftmp;
718     int64_t audio_out_size, audio_buf_size;
719     int64_t allocated_for_size= size;
720
721     int size_out, frame_bytes, ret, resample_changed;
722     AVCodecContext *enc= ost->st->codec;
723     AVCodecContext *dec= ist->st->codec;
724     int osize = av_get_bytes_per_sample(enc->sample_fmt);
725     int isize = av_get_bytes_per_sample(dec->sample_fmt);
726     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
727
728 need_realloc:
729     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
730     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
731     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
732     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
733     audio_buf_size*= osize*enc->channels;
734
735     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
736     if(coded_bps > 8*osize)
737         audio_out_size= audio_out_size * coded_bps / (8*osize);
738     audio_out_size += FF_MIN_BUFFER_SIZE;
739
740     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
741         fprintf(stderr, "Buffer sizes too large\n");
742         exit_program(1);
743     }
744
745     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
746     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
747     if (!audio_buf || !audio_out){
748         fprintf(stderr, "Out of memory in do_audio_out\n");
749         exit_program(1);
750     }
751
752     if (enc->channels != dec->channels || enc->sample_rate != dec->sample_rate)
753         ost->audio_resample = 1;
754
755     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
756                        ost->resample_channels    != dec->channels   ||
757                        ost->resample_sample_rate != dec->sample_rate;
758
759     if ((ost->audio_resample && !ost->resample) || resample_changed) {
760         if (resample_changed) {
761             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",
762                    ist->file_index, ist->st->index,
763                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
764                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
765             ost->resample_sample_fmt  = dec->sample_fmt;
766             ost->resample_channels    = dec->channels;
767             ost->resample_sample_rate = dec->sample_rate;
768             if (ost->resample)
769                 audio_resample_close(ost->resample);
770         }
771         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
772         if (audio_sync_method <= 1 &&
773             ost->resample_sample_fmt  == enc->sample_fmt &&
774             ost->resample_channels    == enc->channels   &&
775             ost->resample_sample_rate == enc->sample_rate) {
776             ost->resample = NULL;
777             ost->audio_resample = 0;
778         } else if (ost->audio_resample) {
779             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
780                 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
781             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
782                                                    enc->sample_rate, dec->sample_rate,
783                                                    enc->sample_fmt,  dec->sample_fmt,
784                                                    16, 10, 0, 0.8);
785             if (!ost->resample) {
786                 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
787                         dec->channels, dec->sample_rate,
788                         enc->channels, enc->sample_rate);
789                 exit_program(1);
790             }
791         }
792     }
793
794 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
795     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
796         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
797         if (ost->reformat_ctx)
798             av_audio_convert_free(ost->reformat_ctx);
799         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
800                                                    dec->sample_fmt, 1, NULL, 0);
801         if (!ost->reformat_ctx) {
802             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
803                 av_get_sample_fmt_name(dec->sample_fmt),
804                 av_get_sample_fmt_name(enc->sample_fmt));
805             exit_program(1);
806         }
807         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
808     }
809
810     if(audio_sync_method){
811         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
812                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
813         double idelta= delta*dec->sample_rate / enc->sample_rate;
814         int byte_delta= ((int)idelta)*2*dec->channels;
815
816         //FIXME resample delay
817         if(fabs(delta) > 50){
818             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
819                 if(byte_delta < 0){
820                     byte_delta= FFMAX(byte_delta, -size);
821                     size += byte_delta;
822                     buf  -= byte_delta;
823                     if(verbose > 2)
824                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
825                     if(!size)
826                         return;
827                     ist->is_start=0;
828                 }else{
829                     static uint8_t *input_tmp= NULL;
830                     input_tmp= av_realloc(input_tmp, byte_delta + size);
831
832                     if(byte_delta > allocated_for_size - size){
833                         allocated_for_size= byte_delta + (int64_t)size;
834                         goto need_realloc;
835                     }
836                     ist->is_start=0;
837
838                     memset(input_tmp, 0, byte_delta);
839                     memcpy(input_tmp + byte_delta, buf, size);
840                     buf= input_tmp;
841                     size += byte_delta;
842                     if(verbose > 2)
843                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
844                 }
845             }else if(audio_sync_method>1){
846                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
847                 av_assert0(ost->audio_resample);
848                 if(verbose > 2)
849                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
850 //                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));
851                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
852             }
853         }
854     }else
855         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
856                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
857
858     if (ost->audio_resample) {
859         buftmp = audio_buf;
860         size_out = audio_resample(ost->resample,
861                                   (short *)buftmp, (short *)buf,
862                                   size / (dec->channels * isize));
863         size_out = size_out * enc->channels * osize;
864     } else {
865         buftmp = buf;
866         size_out = size;
867     }
868
869     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
870         const void *ibuf[6]= {buftmp};
871         void *obuf[6]= {audio_buf};
872         int istride[6]= {isize};
873         int ostride[6]= {osize};
874         int len= size_out/istride[0];
875         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
876             printf("av_audio_convert() failed\n");
877             if (exit_on_error)
878                 exit_program(1);
879             return;
880         }
881         buftmp = audio_buf;
882         size_out = len*osize;
883     }
884
885     /* now encode as many frames as possible */
886     if (enc->frame_size > 1) {
887         /* output resampled raw samples */
888         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
889             fprintf(stderr, "av_fifo_realloc2() failed\n");
890             exit_program(1);
891         }
892         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
893
894         frame_bytes = enc->frame_size * osize * enc->channels;
895
896         while (av_fifo_size(ost->fifo) >= frame_bytes) {
897             AVPacket pkt;
898             av_init_packet(&pkt);
899
900             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
901
902             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
903
904             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
905                                        (short *)audio_buf);
906             if (ret < 0) {
907                 fprintf(stderr, "Audio encoding failed\n");
908                 exit_program(1);
909             }
910             audio_size += ret;
911             pkt.stream_index= ost->index;
912             pkt.data= audio_out;
913             pkt.size= ret;
914             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
915                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
916             pkt.flags |= AV_PKT_FLAG_KEY;
917             write_frame(s, &pkt, enc, ost->bitstream_filters);
918
919             ost->sync_opts += enc->frame_size;
920         }
921     } else {
922         AVPacket pkt;
923         av_init_packet(&pkt);
924
925         ost->sync_opts += size_out / (osize * enc->channels);
926
927         /* output a pcm frame */
928         /* determine the size of the coded buffer */
929         size_out /= osize;
930         if (coded_bps)
931             size_out = size_out*coded_bps/8;
932
933         if(size_out > audio_out_size){
934             fprintf(stderr, "Internal error, buffer size too small\n");
935             exit_program(1);
936         }
937
938         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
939         ret = avcodec_encode_audio(enc, audio_out, size_out,
940                                    (short *)buftmp);
941         if (ret < 0) {
942             fprintf(stderr, "Audio encoding failed\n");
943             exit_program(1);
944         }
945         audio_size += ret;
946         pkt.stream_index= ost->index;
947         pkt.data= audio_out;
948         pkt.size= ret;
949         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
950             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
951         pkt.flags |= AV_PKT_FLAG_KEY;
952         write_frame(s, &pkt, enc, ost->bitstream_filters);
953     }
954 }
955
956 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
957 {
958     AVCodecContext *dec;
959     AVPicture *picture2;
960     AVPicture picture_tmp;
961     uint8_t *buf = 0;
962
963     dec = ist->st->codec;
964
965     /* deinterlace : must be done before any resize */
966     if (do_deinterlace) {
967         int size;
968
969         /* create temporary picture */
970         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
971         buf = av_malloc(size);
972         if (!buf)
973             return;
974
975         picture2 = &picture_tmp;
976         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
977
978         if(avpicture_deinterlace(picture2, picture,
979                                  dec->pix_fmt, dec->width, dec->height) < 0) {
980             /* if error, do not deinterlace */
981             fprintf(stderr, "Deinterlacing failed\n");
982             av_free(buf);
983             buf = NULL;
984             picture2 = picture;
985         }
986     } else {
987         picture2 = picture;
988     }
989
990     if (picture != picture2)
991         *picture = *picture2;
992     *bufp = buf;
993 }
994
995 static void do_subtitle_out(AVFormatContext *s,
996                             OutputStream *ost,
997                             InputStream *ist,
998                             AVSubtitle *sub,
999                             int64_t pts)
1000 {
1001     static uint8_t *subtitle_out = NULL;
1002     int subtitle_out_max_size = 1024 * 1024;
1003     int subtitle_out_size, nb, i;
1004     AVCodecContext *enc;
1005     AVPacket pkt;
1006
1007     if (pts == AV_NOPTS_VALUE) {
1008         fprintf(stderr, "Subtitle packets must have a pts\n");
1009         if (exit_on_error)
1010             exit_program(1);
1011         return;
1012     }
1013
1014     enc = ost->st->codec;
1015
1016     if (!subtitle_out) {
1017         subtitle_out = av_malloc(subtitle_out_max_size);
1018     }
1019
1020     /* Note: DVB subtitle need one packet to draw them and one other
1021        packet to clear them */
1022     /* XXX: signal it in the codec context ? */
1023     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1024         nb = 2;
1025     else
1026         nb = 1;
1027
1028     for(i = 0; i < nb; i++) {
1029         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1030         // start_display_time is required to be 0
1031         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1032         sub->end_display_time -= sub->start_display_time;
1033         sub->start_display_time = 0;
1034         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1035                                                     subtitle_out_max_size, sub);
1036         if (subtitle_out_size < 0) {
1037             fprintf(stderr, "Subtitle encoding failed\n");
1038             exit_program(1);
1039         }
1040
1041         av_init_packet(&pkt);
1042         pkt.stream_index = ost->index;
1043         pkt.data = subtitle_out;
1044         pkt.size = subtitle_out_size;
1045         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1046         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1047             /* XXX: the pts correction is handled here. Maybe handling
1048                it in the codec would be better */
1049             if (i == 0)
1050                 pkt.pts += 90 * sub->start_display_time;
1051             else
1052                 pkt.pts += 90 * sub->end_display_time;
1053         }
1054         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1055     }
1056 }
1057
1058 static int bit_buffer_size= 1024*256;
1059 static uint8_t *bit_buffer= NULL;
1060
1061 static void do_video_resample(OutputStream *ost,
1062                               InputStream *ist,
1063                               AVFrame *in_picture,
1064                               AVFrame **out_picture)
1065 {
1066     int resample_changed = 0;
1067     AVCodecContext *dec = ist->st->codec;
1068     *out_picture = in_picture;
1069
1070     resample_changed = ost->resample_width   != dec->width  ||
1071                        ost->resample_height  != dec->height ||
1072                        ost->resample_pix_fmt != dec->pix_fmt;
1073
1074     if (resample_changed) {
1075         av_log(NULL, AV_LOG_INFO,
1076                "Input stream #%d.%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1077                ist->file_index, ist->st->index,
1078                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1079                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1080         if(!ost->video_resample)
1081             ost->video_resample = 1;
1082     }
1083
1084 #if !CONFIG_AVFILTER
1085     if (ost->video_resample) {
1086         *out_picture = &ost->pict_tmp;
1087         if (resample_changed) {
1088             /* initialize a new scaler context */
1089             sws_freeContext(ost->img_resample_ctx);
1090             ost->img_resample_ctx = sws_getContext(
1091                 ist->st->codec->width,
1092                 ist->st->codec->height,
1093                 ist->st->codec->pix_fmt,
1094                 ost->st->codec->width,
1095                 ost->st->codec->height,
1096                 ost->st->codec->pix_fmt,
1097                 ost->sws_flags, NULL, NULL, NULL);
1098             if (ost->img_resample_ctx == NULL) {
1099                 fprintf(stderr, "Cannot get resampling context\n");
1100                 exit_program(1);
1101             }
1102         }
1103         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1104               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1105     }
1106 #else
1107     if (resample_changed) {
1108         avfilter_graph_free(&ost->graph);
1109         if (configure_video_filters(ist, ost)) {
1110             fprintf(stderr, "Error reinitializing filters!\n");
1111             exit_program(1);
1112         }
1113     }
1114 #endif
1115     if (resample_changed) {
1116         ost->resample_width   = dec->width;
1117         ost->resample_height  = dec->height;
1118         ost->resample_pix_fmt = dec->pix_fmt;
1119     }
1120 }
1121
1122
1123 static void do_video_out(AVFormatContext *s,
1124                          OutputStream *ost,
1125                          InputStream *ist,
1126                          AVFrame *in_picture,
1127                          int *frame_size, float quality)
1128 {
1129     int nb_frames, i, ret, format_video_sync;
1130     AVFrame *final_picture;
1131     AVCodecContext *enc;
1132     double sync_ipts;
1133
1134     enc = ost->st->codec;
1135
1136     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1137
1138     /* by default, we output a single frame */
1139     nb_frames = 1;
1140
1141     *frame_size = 0;
1142
1143     format_video_sync = video_sync_method;
1144     if (format_video_sync < 0)
1145         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? 2 : 1;
1146
1147     if (format_video_sync) {
1148         double vdelta = sync_ipts - ost->sync_opts;
1149         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1150         if (vdelta < -1.1)
1151             nb_frames = 0;
1152         else if (format_video_sync == 2) {
1153             if(vdelta<=-0.6){
1154                 nb_frames=0;
1155             }else if(vdelta>0.6)
1156                 ost->sync_opts= lrintf(sync_ipts);
1157         }else if (vdelta > 1.1)
1158             nb_frames = lrintf(vdelta);
1159 //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);
1160         if (nb_frames == 0){
1161             ++nb_frames_drop;
1162             if (verbose>2)
1163                 fprintf(stderr, "*** drop!\n");
1164         }else if (nb_frames > 1) {
1165             nb_frames_dup += nb_frames - 1;
1166             if (verbose>2)
1167                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1168         }
1169     }else
1170         ost->sync_opts= lrintf(sync_ipts);
1171
1172     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1173     if (nb_frames <= 0)
1174         return;
1175
1176     do_video_resample(ost, ist, in_picture, &final_picture);
1177
1178     /* duplicates frame if needed */
1179     for(i=0;i<nb_frames;i++) {
1180         AVPacket pkt;
1181         av_init_packet(&pkt);
1182         pkt.stream_index= ost->index;
1183
1184         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1185             /* raw pictures are written as AVPicture structure to
1186                avoid any copies. We support temporarily the older
1187                method. */
1188             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1189             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1190             pkt.data= (uint8_t *)final_picture;
1191             pkt.size=  sizeof(AVPicture);
1192             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1193             pkt.flags |= AV_PKT_FLAG_KEY;
1194
1195             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1196         } else {
1197             AVFrame big_picture;
1198
1199             big_picture= *final_picture;
1200             /* better than nothing: use input picture interlaced
1201                settings */
1202             big_picture.interlaced_frame = in_picture->interlaced_frame;
1203             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1204                 if(top_field_first == -1)
1205                     big_picture.top_field_first = in_picture->top_field_first;
1206                 else
1207                     big_picture.top_field_first = top_field_first;
1208             }
1209
1210             /* handles same_quant here. This is not correct because it may
1211                not be a global option */
1212             big_picture.quality = quality;
1213             if(!me_threshold)
1214                 big_picture.pict_type = 0;
1215 //            big_picture.pts = AV_NOPTS_VALUE;
1216             big_picture.pts= ost->sync_opts;
1217 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1218 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1219             if (ost->forced_kf_index < ost->forced_kf_count &&
1220                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1221                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1222                 ost->forced_kf_index++;
1223             }
1224             ret = avcodec_encode_video(enc,
1225                                        bit_buffer, bit_buffer_size,
1226                                        &big_picture);
1227             if (ret < 0) {
1228                 fprintf(stderr, "Video encoding failed\n");
1229                 exit_program(1);
1230             }
1231
1232             if(ret>0){
1233                 pkt.data= bit_buffer;
1234                 pkt.size= ret;
1235                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1236                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1237 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1238    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1239    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1240
1241                 if(enc->coded_frame->key_frame)
1242                     pkt.flags |= AV_PKT_FLAG_KEY;
1243                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1244                 *frame_size = ret;
1245                 video_size += ret;
1246                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1247                 //        enc->frame_number-1, ret, enc->pict_type);
1248                 /* if two pass, output log */
1249                 if (ost->logfile && enc->stats_out) {
1250                     fprintf(ost->logfile, "%s", enc->stats_out);
1251                 }
1252             }
1253         }
1254         ost->sync_opts++;
1255         ost->frame_number++;
1256     }
1257 }
1258
1259 static double psnr(double d){
1260     return -10.0*log(d)/log(10.0);
1261 }
1262
1263 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1264                            int frame_size)
1265 {
1266     AVCodecContext *enc;
1267     int frame_number;
1268     double ti1, bitrate, avg_bitrate;
1269
1270     /* this is executed just the first time do_video_stats is called */
1271     if (!vstats_file) {
1272         vstats_file = fopen(vstats_filename, "w");
1273         if (!vstats_file) {
1274             perror("fopen");
1275             exit_program(1);
1276         }
1277     }
1278
1279     enc = ost->st->codec;
1280     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1281         frame_number = ost->frame_number;
1282         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1283         if (enc->flags&CODEC_FLAG_PSNR)
1284             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1285
1286         fprintf(vstats_file,"f_size= %6d ", frame_size);
1287         /* compute pts value */
1288         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1289         if (ti1 < 0.01)
1290             ti1 = 0.01;
1291
1292         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1293         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1294         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1295             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1296         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1297     }
1298 }
1299
1300 static void print_report(OutputFile *output_files,
1301                          OutputStream *ost_table, int nb_ostreams,
1302                          int is_last_report, int64_t timer_start)
1303 {
1304     char buf[1024];
1305     OutputStream *ost;
1306     AVFormatContext *oc;
1307     int64_t total_size;
1308     AVCodecContext *enc;
1309     int frame_number, vid, i;
1310     double bitrate, ti1, pts;
1311     static int64_t last_time = -1;
1312     static int qp_histogram[52];
1313
1314     if (!is_last_report) {
1315         int64_t cur_time;
1316         /* display the report every 0.5 seconds */
1317         cur_time = av_gettime();
1318         if (last_time == -1) {
1319             last_time = cur_time;
1320             return;
1321         }
1322         if ((cur_time - last_time) < 500000)
1323             return;
1324         last_time = cur_time;
1325     }
1326
1327
1328     oc = output_files[0].ctx;
1329
1330     total_size = avio_size(oc->pb);
1331     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1332         total_size= avio_tell(oc->pb);
1333
1334     buf[0] = '\0';
1335     ti1 = 1e10;
1336     vid = 0;
1337     for(i=0;i<nb_ostreams;i++) {
1338         float q = -1;
1339         ost = &ost_table[i];
1340         enc = ost->st->codec;
1341         if (!ost->st->stream_copy && enc->coded_frame)
1342             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1343         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1344             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1345         }
1346         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1347             float t = (av_gettime()-timer_start) / 1000000.0;
1348
1349             frame_number = ost->frame_number;
1350             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1351                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1352             if(is_last_report)
1353                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1354             if(qp_hist){
1355                 int j;
1356                 int qp = lrintf(q);
1357                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1358                     qp_histogram[qp]++;
1359                 for(j=0; j<32; j++)
1360                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1361             }
1362             if (enc->flags&CODEC_FLAG_PSNR){
1363                 int j;
1364                 double error, error_sum=0;
1365                 double scale, scale_sum=0;
1366                 char type[3]= {'Y','U','V'};
1367                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1368                 for(j=0; j<3; j++){
1369                     if(is_last_report){
1370                         error= enc->error[j];
1371                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1372                     }else{
1373                         error= enc->coded_frame->error[j];
1374                         scale= enc->width*enc->height*255.0*255.0;
1375                     }
1376                     if(j) scale/=4;
1377                     error_sum += error;
1378                     scale_sum += scale;
1379                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1380                 }
1381                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1382             }
1383             vid = 1;
1384         }
1385         /* compute min output value */
1386         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1387         if ((pts < ti1) && (pts > 0))
1388             ti1 = pts;
1389     }
1390     if (ti1 < 0.01)
1391         ti1 = 0.01;
1392
1393     if (verbose > 0 || is_last_report) {
1394         bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1395
1396         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1397             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1398             (double)total_size / 1024, ti1, bitrate);
1399
1400         if (nb_frames_dup || nb_frames_drop)
1401           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1402                   nb_frames_dup, nb_frames_drop);
1403
1404         if (verbose >= 0)
1405             fprintf(stderr, "%s    \r", buf);
1406
1407         fflush(stderr);
1408     }
1409
1410     if (is_last_report && verbose >= 0){
1411         int64_t raw= audio_size + video_size + extra_size;
1412         fprintf(stderr, "\n");
1413         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1414                 video_size/1024.0,
1415                 audio_size/1024.0,
1416                 extra_size/1024.0,
1417                 100.0*(total_size - raw)/raw
1418         );
1419     }
1420 }
1421
1422 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1423 {
1424     int fill_char = 0x00;
1425     if (sample_fmt == AV_SAMPLE_FMT_U8)
1426         fill_char = 0x80;
1427     memset(buf, fill_char, size);
1428 }
1429
1430 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1431 {
1432     int i, ret;
1433
1434     for (i = 0; i < nb_ostreams; i++) {
1435         OutputStream   *ost = &ost_table[i];
1436         AVCodecContext *enc = ost->st->codec;
1437         AVFormatContext *os = output_files[ost->file_index].ctx;
1438
1439         if (!ost->encoding_needed)
1440             continue;
1441
1442         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1443             continue;
1444         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1445             continue;
1446
1447         for(;;) {
1448             AVPacket pkt;
1449             int fifo_bytes;
1450             av_init_packet(&pkt);
1451             pkt.stream_index= ost->index;
1452
1453             switch (ost->st->codec->codec_type) {
1454             case AVMEDIA_TYPE_AUDIO:
1455                 fifo_bytes = av_fifo_size(ost->fifo);
1456                 ret = 0;
1457                 /* encode any samples remaining in fifo */
1458                 if (fifo_bytes > 0) {
1459                     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1460                     int fs_tmp = enc->frame_size;
1461
1462                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1463                     if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1464                         enc->frame_size = fifo_bytes / (osize * enc->channels);
1465                     } else { /* pad */
1466                         int frame_bytes = enc->frame_size*osize*enc->channels;
1467                         if (allocated_audio_buf_size < frame_bytes)
1468                             exit_program(1);
1469                         generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1470                     }
1471
1472                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1473                     pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1474                                               ost->st->time_base.num, enc->sample_rate);
1475                     enc->frame_size = fs_tmp;
1476                 }
1477                 if (ret <= 0) {
1478                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1479                 }
1480                 if (ret < 0) {
1481                     fprintf(stderr, "Audio encoding failed\n");
1482                     exit_program(1);
1483                 }
1484                 audio_size += ret;
1485                 pkt.flags |= AV_PKT_FLAG_KEY;
1486                 break;
1487             case AVMEDIA_TYPE_VIDEO:
1488                 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1489                 if (ret < 0) {
1490                     fprintf(stderr, "Video encoding failed\n");
1491                     exit_program(1);
1492                 }
1493                 video_size += ret;
1494                 if(enc->coded_frame && enc->coded_frame->key_frame)
1495                     pkt.flags |= AV_PKT_FLAG_KEY;
1496                 if (ost->logfile && enc->stats_out) {
1497                     fprintf(ost->logfile, "%s", enc->stats_out);
1498                 }
1499                 break;
1500             default:
1501                 ret=-1;
1502             }
1503
1504             if (ret <= 0)
1505                 break;
1506             pkt.data = bit_buffer;
1507             pkt.size = ret;
1508             if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1509                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1510             write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1511         }
1512     }
1513 }
1514
1515 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1516 static int output_packet(InputStream *ist, int ist_index,
1517                          OutputStream *ost_table, int nb_ostreams,
1518                          const AVPacket *pkt)
1519 {
1520     AVFormatContext *os;
1521     OutputStream *ost;
1522     int ret, i;
1523     int got_output;
1524     AVFrame picture;
1525     void *buffer_to_free = NULL;
1526     static unsigned int samples_size= 0;
1527     AVSubtitle subtitle, *subtitle_to_free;
1528     int64_t pkt_pts = AV_NOPTS_VALUE;
1529 #if CONFIG_AVFILTER
1530     int frame_available;
1531 #endif
1532     float quality;
1533
1534     AVPacket avpkt;
1535     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1536
1537     if(ist->next_pts == AV_NOPTS_VALUE)
1538         ist->next_pts= ist->pts;
1539
1540     if (pkt == NULL) {
1541         /* EOF handling */
1542         av_init_packet(&avpkt);
1543         avpkt.data = NULL;
1544         avpkt.size = 0;
1545         goto handle_eof;
1546     } else {
1547         avpkt = *pkt;
1548     }
1549
1550     if(pkt->dts != AV_NOPTS_VALUE)
1551         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1552     if(pkt->pts != AV_NOPTS_VALUE)
1553         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1554
1555     //while we have more to decode or while the decoder did output something on EOF
1556     while (avpkt.size > 0 || (!pkt && got_output)) {
1557         uint8_t *data_buf, *decoded_data_buf;
1558         int data_size, decoded_data_size;
1559     handle_eof:
1560         ist->pts= ist->next_pts;
1561
1562         if(avpkt.size && avpkt.size != pkt->size &&
1563            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1564             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1565             ist->showed_multi_packet_warning=1;
1566         }
1567
1568         /* decode the packet if needed */
1569         decoded_data_buf = NULL; /* fail safe */
1570         decoded_data_size= 0;
1571         data_buf  = avpkt.data;
1572         data_size = avpkt.size;
1573         subtitle_to_free = NULL;
1574         if (ist->decoding_needed) {
1575             switch(ist->st->codec->codec_type) {
1576             case AVMEDIA_TYPE_AUDIO:{
1577                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1578                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1579                     av_free(samples);
1580                     samples= av_malloc(samples_size);
1581                 }
1582                 decoded_data_size= samples_size;
1583                     /* XXX: could avoid copy if PCM 16 bits with same
1584                        endianness as CPU */
1585                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1586                                             &avpkt);
1587                 if (ret < 0)
1588                     return ret;
1589                 avpkt.data += ret;
1590                 avpkt.size -= ret;
1591                 data_size   = ret;
1592                 got_output  = decoded_data_size > 0;
1593                 /* Some bug in mpeg audio decoder gives */
1594                 /* decoded_data_size < 0, it seems they are overflows */
1595                 if (!got_output) {
1596                     /* no audio frame */
1597                     continue;
1598                 }
1599                 decoded_data_buf = (uint8_t *)samples;
1600                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1601                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1602                 break;}
1603             case AVMEDIA_TYPE_VIDEO:
1604                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1605                     /* XXX: allocate picture correctly */
1606                     avcodec_get_frame_defaults(&picture);
1607                     avpkt.pts = pkt_pts;
1608                     avpkt.dts = ist->pts;
1609                     pkt_pts = AV_NOPTS_VALUE;
1610
1611                     ret = avcodec_decode_video2(ist->st->codec,
1612                                                 &picture, &got_output, &avpkt);
1613                     quality = same_quant ? picture.quality : 0;
1614                     if (ret < 0)
1615                         return ret;
1616                     if (!got_output) {
1617                         /* no picture yet */
1618                         goto discard_packet;
1619                     }
1620                     ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, picture.pkt_pts, picture.pkt_dts);
1621                     if (ist->st->codec->time_base.num != 0) {
1622                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1623                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1624                                           ist->st->codec->time_base.num * ticks) /
1625                             ist->st->codec->time_base.den;
1626                     }
1627                     avpkt.size = 0;
1628                     buffer_to_free = NULL;
1629                     pre_process_video_frame(ist, (AVPicture *)&picture, &buffer_to_free);
1630                     break;
1631             case AVMEDIA_TYPE_SUBTITLE:
1632                 ret = avcodec_decode_subtitle2(ist->st->codec,
1633                                                &subtitle, &got_output, &avpkt);
1634                 if (ret < 0)
1635                     return ret;
1636                 if (!got_output) {
1637                     goto discard_packet;
1638                 }
1639                 subtitle_to_free = &subtitle;
1640                 avpkt.size = 0;
1641                 break;
1642             default:
1643                 return -1;
1644             }
1645         } else {
1646             switch(ist->st->codec->codec_type) {
1647             case AVMEDIA_TYPE_AUDIO:
1648                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1649                     ist->st->codec->sample_rate;
1650                 break;
1651             case AVMEDIA_TYPE_VIDEO:
1652                 if (ist->st->codec->time_base.num != 0) {
1653                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1654                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1655                                       ist->st->codec->time_base.num * ticks) /
1656                         ist->st->codec->time_base.den;
1657                 }
1658                 break;
1659             }
1660             avpkt.size = 0;
1661         }
1662
1663         // preprocess audio (volume)
1664         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1665             if (audio_volume != 256) {
1666                 short *volp;
1667                 volp = samples;
1668                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1669                     int v = ((*volp) * audio_volume + 128) >> 8;
1670                     *volp++ = av_clip_int16(v);
1671                 }
1672             }
1673         }
1674
1675         /* frame rate emulation */
1676         if (input_files[ist->file_index].rate_emu) {
1677             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1678             int64_t now = av_gettime() - ist->start;
1679             if (pts > now)
1680                 usleep(pts - now);
1681         }
1682         /* if output time reached then transcode raw format,
1683            encode packets and output them */
1684         for (i = 0; i < nb_ostreams; i++) {
1685             OutputFile *of = &output_files[ost_table[i].file_index];
1686             int frame_size;
1687
1688             ost = &ost_table[i];
1689             if (ost->source_index != ist_index)
1690                 continue;
1691
1692             if (of->start_time && ist->pts < of->start_time)
1693                 continue;
1694
1695             if (of->recording_time != INT64_MAX &&
1696                 av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1697                               (AVRational){1, 1000000}) >= 0) {
1698                 ost->is_past_recording_time = 1;
1699                 continue;
1700             }
1701
1702 #if CONFIG_AVFILTER
1703             if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1704                 ost->input_video_filter) {
1705                 AVRational sar;
1706                 if (ist->st->sample_aspect_ratio.num)
1707                     sar = ist->st->sample_aspect_ratio;
1708                 else
1709                     sar = ist->st->codec->sample_aspect_ratio;
1710                 av_vsrc_buffer_add_frame(ost->input_video_filter, &picture, ist->pts, sar);
1711             }
1712             frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1713                 !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1714             while (frame_available) {
1715                 AVRational ist_pts_tb;
1716                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter)
1717                     get_filtered_video_frame(ost->output_video_filter, &picture, &ost->picref, &ist_pts_tb);
1718                 if (ost->picref)
1719                     ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1720 #endif
1721                 os = output_files[ost->file_index].ctx;
1722
1723                 /* set the input output pts pairs */
1724                 //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
1725
1726                 if (ost->encoding_needed) {
1727                     av_assert0(ist->decoding_needed);
1728                     switch(ost->st->codec->codec_type) {
1729                     case AVMEDIA_TYPE_AUDIO:
1730                         do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1731                         break;
1732                     case AVMEDIA_TYPE_VIDEO:
1733 #if CONFIG_AVFILTER
1734                         if (ost->picref->video && !ost->frame_aspect_ratio)
1735                             ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
1736 #endif
1737                         do_video_out(os, ost, ist, &picture, &frame_size,
1738                                      same_quant ? quality : ost->st->codec->global_quality);
1739                         if (vstats_filename && frame_size)
1740                             do_video_stats(os, ost, frame_size);
1741                         break;
1742                     case AVMEDIA_TYPE_SUBTITLE:
1743                         do_subtitle_out(os, ost, ist, &subtitle,
1744                                         pkt->pts);
1745                         break;
1746                     default:
1747                         abort();
1748                     }
1749                 } else {
1750                     AVFrame avframe; //FIXME/XXX remove this
1751                     AVPacket opkt;
1752                     int64_t ost_tb_start_time= av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1753
1754                     av_init_packet(&opkt);
1755
1756                     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1757 #if !CONFIG_AVFILTER
1758                         continue;
1759 #else
1760                         goto cont;
1761 #endif
1762
1763                     /* no reencoding needed : output the packet directly */
1764                     /* force the input stream PTS */
1765
1766                     avcodec_get_frame_defaults(&avframe);
1767                     ost->st->codec->coded_frame= &avframe;
1768                     avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1769
1770                     if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1771                         audio_size += data_size;
1772                     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1773                         video_size += data_size;
1774                         ost->sync_opts++;
1775                     }
1776
1777                     opkt.stream_index= ost->index;
1778                     if(pkt->pts != AV_NOPTS_VALUE)
1779                         opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1780                     else
1781                         opkt.pts= AV_NOPTS_VALUE;
1782
1783                     if (pkt->dts == AV_NOPTS_VALUE)
1784                         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1785                     else
1786                         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1787                     opkt.dts -= ost_tb_start_time;
1788
1789                     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1790                     opkt.flags= pkt->flags;
1791
1792                     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1793                     if(   ost->st->codec->codec_id != CODEC_ID_H264
1794                        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1795                        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1796                        ) {
1797                         if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1798                             opkt.destruct= av_destruct_packet;
1799                     } else {
1800                         opkt.data = data_buf;
1801                         opkt.size = data_size;
1802                     }
1803
1804                     write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1805                     ost->st->codec->frame_number++;
1806                     ost->frame_number++;
1807                     av_free_packet(&opkt);
1808                 }
1809 #if CONFIG_AVFILTER
1810                 cont:
1811                 frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1812                                    ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1813                 if (ost->picref)
1814                     avfilter_unref_buffer(ost->picref);
1815             }
1816 #endif
1817             }
1818
1819         av_free(buffer_to_free);
1820         /* XXX: allocate the subtitles in the codec ? */
1821         if (subtitle_to_free) {
1822             avsubtitle_free(subtitle_to_free);
1823             subtitle_to_free = NULL;
1824         }
1825     }
1826  discard_packet:
1827
1828     return 0;
1829 }
1830
1831 static void print_sdp(OutputFile *output_files, int n)
1832 {
1833     char sdp[2048];
1834     int i;
1835     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
1836
1837     if (!avc)
1838         exit_program(1);
1839     for (i = 0; i < n; i++)
1840         avc[i] = output_files[i].ctx;
1841
1842     av_sdp_create(avc, n, sdp, sizeof(sdp));
1843     printf("SDP:\n%s\n", sdp);
1844     fflush(stdout);
1845     av_freep(&avc);
1846 }
1847
1848 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
1849                              char *error, int error_len)
1850 {
1851     int i;
1852     InputStream *ist = &input_streams[ist_index];
1853     if (ist->decoding_needed) {
1854         AVCodec *codec = ist->dec;
1855         if (!codec) {
1856             snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d.%d",
1857                     ist->st->codec->codec_id, ist->file_index, ist->st->index);
1858             return AVERROR(EINVAL);
1859         }
1860
1861         /* update requested sample format for the decoder based on the
1862            corresponding encoder sample format */
1863         for (i = 0; i < nb_output_streams; i++) {
1864             OutputStream *ost = &output_streams[i];
1865             if (ost->source_index == ist_index) {
1866                 update_sample_fmt(ist->st->codec, codec, ost->st->codec);
1867                 break;
1868             }
1869         }
1870
1871         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
1872             snprintf(error, error_len, "Error while opening decoder for input stream #%d.%d",
1873                     ist->file_index, ist->st->index);
1874             return AVERROR(EINVAL);
1875         }
1876         assert_codec_experimental(ist->st->codec, 0);
1877         assert_avoptions(ist->opts);
1878     }
1879
1880     ist->pts = ist->st->avg_frame_rate.num ? - ist->st->codec->has_b_frames*AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;
1881     ist->next_pts = AV_NOPTS_VALUE;
1882     init_pts_correction(&ist->pts_ctx);
1883     ist->is_start = 1;
1884
1885     return 0;
1886 }
1887
1888 static int transcode_init(OutputFile *output_files,
1889                           int nb_output_files,
1890                           InputFile *input_files,
1891                           int nb_input_files)
1892 {
1893     int ret = 0, i, j, k;
1894     AVFormatContext *os;
1895     AVCodecContext *codec, *icodec;
1896     OutputStream *ost;
1897     InputStream *ist;
1898     char error[1024];
1899     int want_sdp = 1;
1900
1901     /* init framerate emulation */
1902     for (i = 0; i < nb_input_files; i++) {
1903         InputFile *ifile = &input_files[i];
1904         if (ifile->rate_emu)
1905             for (j = 0; j < ifile->nb_streams; j++)
1906                 input_streams[j + ifile->ist_index].start = av_gettime();
1907     }
1908
1909     /* output stream init */
1910     for(i=0;i<nb_output_files;i++) {
1911         os = output_files[i].ctx;
1912         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1913             av_dump_format(os, i, os->filename, 1);
1914             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
1915             return AVERROR(EINVAL);
1916         }
1917     }
1918
1919     /* for each output stream, we compute the right encoding parameters */
1920     for (i = 0; i < nb_output_streams; i++) {
1921         ost = &output_streams[i];
1922         os = output_files[ost->file_index].ctx;
1923         ist = &input_streams[ost->source_index];
1924
1925         codec = ost->st->codec;
1926         icodec = ist->st->codec;
1927
1928         ost->st->disposition = ist->st->disposition;
1929         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
1930         codec->chroma_sample_location = icodec->chroma_sample_location;
1931
1932         if (ost->st->stream_copy) {
1933             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
1934
1935             if (extra_size > INT_MAX) {
1936                 return AVERROR(EINVAL);
1937             }
1938
1939             /* if stream_copy is selected, no need to decode or encode */
1940             codec->codec_id = icodec->codec_id;
1941             codec->codec_type = icodec->codec_type;
1942
1943             if(!codec->codec_tag){
1944                 if(   !os->oformat->codec_tag
1945                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
1946                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
1947                     codec->codec_tag = icodec->codec_tag;
1948             }
1949
1950             codec->bit_rate = icodec->bit_rate;
1951             codec->rc_max_rate    = icodec->rc_max_rate;
1952             codec->rc_buffer_size = icodec->rc_buffer_size;
1953             codec->extradata= av_mallocz(extra_size);
1954             if (!codec->extradata) {
1955                 return AVERROR(ENOMEM);
1956             }
1957             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
1958             codec->extradata_size= icodec->extradata_size;
1959             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){
1960                 codec->time_base = icodec->time_base;
1961                 codec->time_base.num *= icodec->ticks_per_frame;
1962                 av_reduce(&codec->time_base.num, &codec->time_base.den,
1963                           codec->time_base.num, codec->time_base.den, INT_MAX);
1964             }else
1965                 codec->time_base = ist->st->time_base;
1966             switch(codec->codec_type) {
1967             case AVMEDIA_TYPE_AUDIO:
1968                 if(audio_volume != 256) {
1969                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
1970                     exit_program(1);
1971                 }
1972                 codec->channel_layout = icodec->channel_layout;
1973                 codec->sample_rate = icodec->sample_rate;
1974                 codec->channels = icodec->channels;
1975                 codec->frame_size = icodec->frame_size;
1976                 codec->audio_service_type = icodec->audio_service_type;
1977                 codec->block_align= icodec->block_align;
1978                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
1979                     codec->block_align= 0;
1980                 if(codec->codec_id == CODEC_ID_AC3)
1981                     codec->block_align= 0;
1982                 break;
1983             case AVMEDIA_TYPE_VIDEO:
1984                 codec->pix_fmt = icodec->pix_fmt;
1985                 codec->width = icodec->width;
1986                 codec->height = icodec->height;
1987                 codec->has_b_frames = icodec->has_b_frames;
1988                 if (!codec->sample_aspect_ratio.num) {
1989                     codec->sample_aspect_ratio =
1990                     ost->st->sample_aspect_ratio =
1991                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
1992                         ist->st->codec->sample_aspect_ratio.num ?
1993                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
1994                 }
1995                 break;
1996             case AVMEDIA_TYPE_SUBTITLE:
1997                 codec->width = icodec->width;
1998                 codec->height = icodec->height;
1999                 break;
2000             case AVMEDIA_TYPE_DATA:
2001                 break;
2002             default:
2003                 abort();
2004             }
2005         } else {
2006             if (!ost->enc)
2007                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2008             switch(codec->codec_type) {
2009             case AVMEDIA_TYPE_AUDIO:
2010                 ost->fifo= av_fifo_alloc(1024);
2011                 if (!ost->fifo) {
2012                     return AVERROR(ENOMEM);
2013                 }
2014                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2015                 if (!codec->sample_rate) {
2016                     codec->sample_rate = icodec->sample_rate;
2017                     if (icodec->lowres)
2018                         codec->sample_rate >>= icodec->lowres;
2019                 }
2020                 choose_sample_rate(ost->st, ost->enc);
2021                 codec->time_base = (AVRational){1, codec->sample_rate};
2022                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2023                     codec->sample_fmt = icodec->sample_fmt;
2024                 choose_sample_fmt(ost->st, ost->enc);
2025                 if (!codec->channels)
2026                     codec->channels = icodec->channels;
2027                 codec->channel_layout = icodec->channel_layout;
2028                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2029                     codec->channel_layout = 0;
2030                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2031                 icodec->request_channels = codec->channels;
2032                 ist->decoding_needed = 1;
2033                 ost->encoding_needed = 1;
2034                 ost->resample_sample_fmt  = icodec->sample_fmt;
2035                 ost->resample_sample_rate = icodec->sample_rate;
2036                 ost->resample_channels    = icodec->channels;
2037                 break;
2038             case AVMEDIA_TYPE_VIDEO:
2039                 if (codec->pix_fmt == PIX_FMT_NONE)
2040                     codec->pix_fmt = icodec->pix_fmt;
2041                 choose_pixel_fmt(ost->st, ost->enc);
2042
2043                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2044                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2045                     exit_program(1);
2046                 }
2047
2048                 if (!codec->width || !codec->height) {
2049                     codec->width  = icodec->width;
2050                     codec->height = icodec->height;
2051                 }
2052
2053                 ost->video_resample = codec->width   != icodec->width  ||
2054                                       codec->height  != icodec->height ||
2055                                       codec->pix_fmt != icodec->pix_fmt;
2056                 if (ost->video_resample) {
2057 #if !CONFIG_AVFILTER
2058                     avcodec_get_frame_defaults(&ost->pict_tmp);
2059                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2060                                        codec->width, codec->height)) {
2061                         fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
2062                         exit_program(1);
2063                     }
2064                     ost->img_resample_ctx = sws_getContext(
2065                         icodec->width,
2066                         icodec->height,
2067                         icodec->pix_fmt,
2068                         codec->width,
2069                         codec->height,
2070                         codec->pix_fmt,
2071                         ost->sws_flags, NULL, NULL, NULL);
2072                     if (ost->img_resample_ctx == NULL) {
2073                         fprintf(stderr, "Cannot get resampling context\n");
2074                         exit_program(1);
2075                     }
2076 #endif
2077                     codec->bits_per_raw_sample= 0;
2078                 }
2079
2080                 ost->resample_height = icodec->height;
2081                 ost->resample_width  = icodec->width;
2082                 ost->resample_pix_fmt= icodec->pix_fmt;
2083                 ost->encoding_needed = 1;
2084                 ist->decoding_needed = 1;
2085
2086                 if (!ost->frame_rate.num)
2087                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2088                 if (ost->enc && ost->enc->supported_framerates && !force_fps) {
2089                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2090                     ost->frame_rate = ost->enc->supported_framerates[idx];
2091                 }
2092                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2093
2094 #if CONFIG_AVFILTER
2095                 if (configure_video_filters(ist, ost)) {
2096                     fprintf(stderr, "Error opening filters!\n");
2097                     exit(1);
2098                 }
2099 #endif
2100                 break;
2101             case AVMEDIA_TYPE_SUBTITLE:
2102                 ost->encoding_needed = 1;
2103                 ist->decoding_needed = 1;
2104                 break;
2105             default:
2106                 abort();
2107                 break;
2108             }
2109             /* two pass mode */
2110             if (ost->encoding_needed &&
2111                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2112                 char logfilename[1024];
2113                 FILE *f;
2114
2115                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2116                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2117                          i);
2118                 if (codec->flags & CODEC_FLAG_PASS1) {
2119                     f = fopen(logfilename, "wb");
2120                     if (!f) {
2121                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2122                         exit_program(1);
2123                     }
2124                     ost->logfile = f;
2125                 } else {
2126                     char  *logbuffer;
2127                     size_t logbuffer_size;
2128                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2129                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2130                         exit_program(1);
2131                     }
2132                     codec->stats_in = logbuffer;
2133                 }
2134             }
2135         }
2136         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2137             int size= codec->width * codec->height;
2138             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2139         }
2140     }
2141
2142     if (!bit_buffer)
2143         bit_buffer = av_malloc(bit_buffer_size);
2144     if (!bit_buffer) {
2145         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2146                 bit_buffer_size);
2147         return AVERROR(ENOMEM);
2148     }
2149
2150     /* open each encoder */
2151     for (i = 0; i < nb_output_streams; i++) {
2152         ost = &output_streams[i];
2153         if (ost->encoding_needed) {
2154             AVCodec *codec = ost->enc;
2155             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2156             if (!codec) {
2157                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2158                          ost->st->codec->codec_id, ost->file_index, ost->index);
2159                 ret = AVERROR(EINVAL);
2160                 goto dump_format;
2161             }
2162             if (dec->subtitle_header) {
2163                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2164                 if (!ost->st->codec->subtitle_header) {
2165                     ret = AVERROR(ENOMEM);
2166                     goto dump_format;
2167                 }
2168                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2169                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2170             }
2171             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2172                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2173                         ost->file_index, ost->index);
2174                 ret = AVERROR(EINVAL);
2175                 goto dump_format;
2176             }
2177             assert_codec_experimental(ost->st->codec, 1);
2178             assert_avoptions(ost->opts);
2179             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2180                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2181                                              "It takes bits/s as argument, not kbits/s\n");
2182             extra_size += ost->st->codec->extradata_size;
2183         }
2184     }
2185
2186     /* init input streams */
2187     for (i = 0; i < nb_input_streams; i++)
2188         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2189             goto dump_format;
2190
2191     /* discard unused programs */
2192     for (i = 0; i < nb_input_files; i++) {
2193         InputFile *ifile = &input_files[i];
2194         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2195             AVProgram *p = ifile->ctx->programs[j];
2196             int discard  = AVDISCARD_ALL;
2197
2198             for (k = 0; k < p->nb_stream_indexes; k++)
2199                 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2200                     discard = AVDISCARD_DEFAULT;
2201                     break;
2202                 }
2203             p->discard = discard;
2204         }
2205     }
2206
2207     /* open files and write file headers */
2208     for (i = 0; i < nb_output_files; i++) {
2209         os = output_files[i].ctx;
2210         if (avformat_write_header(os, &output_files[i].opts) < 0) {
2211             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2212             ret = AVERROR(EINVAL);
2213             goto dump_format;
2214         }
2215         assert_avoptions(output_files[i].opts);
2216         if (strcmp(os->oformat->name, "rtp")) {
2217             want_sdp = 0;
2218         }
2219     }
2220
2221  dump_format:
2222     /* dump the file output parameters - cannot be done before in case
2223        of stream copy */
2224     for(i=0;i<nb_output_files;i++) {
2225         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2226     }
2227
2228     /* dump the stream mapping */
2229     if (verbose >= 0) {
2230         fprintf(stderr, "Stream mapping:\n");
2231         for (i = 0; i < nb_output_streams;i ++) {
2232             ost = &output_streams[i];
2233             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2234                     input_streams[ost->source_index].file_index,
2235                     input_streams[ost->source_index].st->index,
2236                     ost->file_index,
2237                     ost->index);
2238             if (ost->sync_ist != &input_streams[ost->source_index])
2239                 fprintf(stderr, " [sync #%d.%d]",
2240                         ost->sync_ist->file_index,
2241                         ost->sync_ist->st->index);
2242             if (ost->st->stream_copy)
2243                 fprintf(stderr, " (copy)");
2244             else
2245                 fprintf(stderr, " (%s -> %s)", input_streams[ost->source_index].dec ?
2246                         input_streams[ost->source_index].dec->name : "?",
2247                         ost->enc ? ost->enc->name : "?");
2248             fprintf(stderr, "\n");
2249         }
2250     }
2251
2252     if (ret) {
2253         fprintf(stderr, "%s\n", error);
2254         return ret;
2255     }
2256
2257     if (want_sdp) {
2258         print_sdp(output_files, nb_output_files);
2259     }
2260
2261     return 0;
2262 }
2263
2264 /*
2265  * The following code is the main loop of the file converter
2266  */
2267 static int transcode(OutputFile *output_files,
2268                      int nb_output_files,
2269                      InputFile *input_files,
2270                      int nb_input_files)
2271 {
2272     int ret, i;
2273     AVFormatContext *is, *os;
2274     OutputStream *ost;
2275     InputStream *ist;
2276     uint8_t *no_packet;
2277     int no_packet_count=0;
2278     int64_t timer_start;
2279
2280     if (!(no_packet = av_mallocz(nb_input_files)))
2281         exit_program(1);
2282
2283     ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2284     if (ret < 0)
2285         goto fail;
2286
2287     if (verbose >= 0)
2288         fprintf(stderr, "Press ctrl-c to stop encoding\n");
2289     term_init();
2290
2291     timer_start = av_gettime();
2292
2293     for(; received_sigterm == 0;) {
2294         int file_index, ist_index;
2295         AVPacket pkt;
2296         int64_t ipts_min;
2297         double opts_min;
2298
2299         ipts_min = INT64_MAX;
2300         opts_min= 1e100;
2301
2302         /* select the stream that we must read now by looking at the
2303            smallest output pts */
2304         file_index = -1;
2305         for (i = 0; i < nb_output_streams; i++) {
2306             OutputFile *of;
2307             int64_t ipts;
2308             double  opts;
2309             ost = &output_streams[i];
2310             of = &output_files[ost->file_index];
2311             os = output_files[ost->file_index].ctx;
2312             ist = &input_streams[ost->source_index];
2313             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2314                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2315                 continue;
2316             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2317             ipts = ist->pts;
2318             if (!input_files[ist->file_index].eof_reached){
2319                 if(ipts < ipts_min) {
2320                     ipts_min = ipts;
2321                     if(input_sync ) file_index = ist->file_index;
2322                 }
2323                 if(opts < opts_min) {
2324                     opts_min = opts;
2325                     if(!input_sync) file_index = ist->file_index;
2326                 }
2327             }
2328             if (ost->frame_number >= ost->max_frames) {
2329                 int j;
2330                 for (j = of->ost_index; j < of->ctx->nb_streams; j++)
2331                     output_streams[j].is_past_recording_time = 1;
2332                 continue;
2333             }
2334         }
2335         /* if none, if is finished */
2336         if (file_index < 0) {
2337             if(no_packet_count){
2338                 no_packet_count=0;
2339                 memset(no_packet, 0, nb_input_files);
2340                 usleep(10000);
2341                 continue;
2342             }
2343             break;
2344         }
2345
2346         /* read a frame from it and output it in the fifo */
2347         is = input_files[file_index].ctx;
2348         ret= av_read_frame(is, &pkt);
2349         if(ret == AVERROR(EAGAIN)){
2350             no_packet[file_index]=1;
2351             no_packet_count++;
2352             continue;
2353         }
2354         if (ret < 0) {
2355             input_files[file_index].eof_reached = 1;
2356             if (opt_shortest)
2357                 break;
2358             else
2359                 continue;
2360         }
2361
2362         no_packet_count=0;
2363         memset(no_packet, 0, nb_input_files);
2364
2365         if (do_pkt_dump) {
2366             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2367                              is->streams[pkt.stream_index]);
2368         }
2369         /* the following test is needed in case new streams appear
2370            dynamically in stream : we ignore them */
2371         if (pkt.stream_index >= input_files[file_index].nb_streams)
2372             goto discard_packet;
2373         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2374         ist = &input_streams[ist_index];
2375         if (ist->discard)
2376             goto discard_packet;
2377
2378         if (pkt.dts != AV_NOPTS_VALUE)
2379             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2380         if (pkt.pts != AV_NOPTS_VALUE)
2381             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2382
2383         if(pkt.pts != AV_NOPTS_VALUE)
2384             pkt.pts *= ist->ts_scale;
2385         if(pkt.dts != AV_NOPTS_VALUE)
2386             pkt.dts *= ist->ts_scale;
2387
2388 //        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);
2389         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2390             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2391             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2392             int64_t delta= pkt_dts - ist->next_pts;
2393             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2394                 input_files[ist->file_index].ts_offset -= delta;
2395                 if (verbose > 2)
2396                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2397                             delta, input_files[ist->file_index].ts_offset);
2398                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2399                 if(pkt.pts != AV_NOPTS_VALUE)
2400                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2401             }
2402         }
2403
2404         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2405         if (output_packet(ist, ist_index, output_streams, nb_output_streams, &pkt) < 0) {
2406
2407             if (verbose >= 0)
2408                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2409                         ist->file_index, ist->st->index);
2410             if (exit_on_error)
2411                 exit_program(1);
2412             av_free_packet(&pkt);
2413             continue;
2414         }
2415
2416     discard_packet:
2417         av_free_packet(&pkt);
2418
2419         /* dump report by using the output first video and audio streams */
2420         print_report(output_files, output_streams, nb_output_streams, 0, timer_start);
2421     }
2422
2423     /* at the end of stream, we must flush the decoder buffers */
2424     for (i = 0; i < nb_input_streams; i++) {
2425         ist = &input_streams[i];
2426         if (ist->decoding_needed) {
2427             output_packet(ist, i, output_streams, nb_output_streams, NULL);
2428         }
2429     }
2430     flush_encoders(output_streams, nb_output_streams);
2431
2432     term_exit();
2433
2434     /* write the trailer if needed and close file */
2435     for(i=0;i<nb_output_files;i++) {
2436         os = output_files[i].ctx;
2437         av_write_trailer(os);
2438     }
2439
2440     /* dump report by using the first video and audio streams */
2441     print_report(output_files, output_streams, nb_output_streams, 1, timer_start);
2442
2443     /* close each encoder */
2444     for (i = 0; i < nb_output_streams; i++) {
2445         ost = &output_streams[i];
2446         if (ost->encoding_needed) {
2447             av_freep(&ost->st->codec->stats_in);
2448             avcodec_close(ost->st->codec);
2449         }
2450 #if CONFIG_AVFILTER
2451         avfilter_graph_free(&ost->graph);
2452 #endif
2453     }
2454
2455     /* close each decoder */
2456     for (i = 0; i < nb_input_streams; i++) {
2457         ist = &input_streams[i];
2458         if (ist->decoding_needed) {
2459             avcodec_close(ist->st->codec);
2460         }
2461     }
2462
2463     /* finished ! */
2464     ret = 0;
2465
2466  fail:
2467     av_freep(&bit_buffer);
2468     av_freep(&no_packet);
2469
2470     if (output_streams) {
2471         for (i = 0; i < nb_output_streams; i++) {
2472             ost = &output_streams[i];
2473             if (ost) {
2474                 if (ost->st->stream_copy)
2475                     av_freep(&ost->st->codec->extradata);
2476                 if (ost->logfile) {
2477                     fclose(ost->logfile);
2478                     ost->logfile = NULL;
2479                 }
2480                 av_fifo_free(ost->fifo); /* works even if fifo is not
2481                                              initialized but set to zero */
2482                 av_freep(&ost->st->codec->subtitle_header);
2483                 av_free(ost->pict_tmp.data[0]);
2484                 av_free(ost->forced_kf_pts);
2485                 if (ost->video_resample)
2486                     sws_freeContext(ost->img_resample_ctx);
2487                 if (ost->resample)
2488                     audio_resample_close(ost->resample);
2489                 if (ost->reformat_ctx)
2490                     av_audio_convert_free(ost->reformat_ctx);
2491                 av_dict_free(&ost->opts);
2492             }
2493         }
2494     }
2495     return ret;
2496 }
2497
2498 static int opt_video_rc_override_string(const char *opt, const char *arg)
2499 {
2500     video_rc_override_string = arg;
2501     return 0;
2502 }
2503
2504 static int opt_me_threshold(const char *opt, const char *arg)
2505 {
2506     me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2507     return 0;
2508 }
2509
2510 static int opt_verbose(const char *opt, const char *arg)
2511 {
2512     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2513     return 0;
2514 }
2515
2516 static int opt_frame_rate(const char *opt, const char *arg)
2517 {
2518     if (av_parse_video_rate(&frame_rate, arg) < 0) {
2519         fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2520         exit_program(1);
2521     }
2522     return 0;
2523 }
2524
2525 static int opt_frame_size(const char *opt, const char *arg)
2526 {
2527     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2528         fprintf(stderr, "Incorrect frame size\n");
2529         return AVERROR(EINVAL);
2530     }
2531     return 0;
2532 }
2533
2534 static int opt_frame_pix_fmt(const char *opt, const char *arg)
2535 {
2536     if (strcmp(arg, "list")) {
2537         frame_pix_fmt = av_get_pix_fmt(arg);
2538         if (frame_pix_fmt == PIX_FMT_NONE) {
2539             fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2540             return AVERROR(EINVAL);
2541         }
2542     } else {
2543         show_pix_fmts();
2544         exit_program(0);
2545     }
2546     return 0;
2547 }
2548
2549 static int opt_frame_aspect_ratio(const char *opt, const char *arg)
2550 {
2551     int x = 0, y = 0;
2552     double ar = 0;
2553     const char *p;
2554     char *end;
2555
2556     p = strchr(arg, ':');
2557     if (p) {
2558         x = strtol(arg, &end, 10);
2559         if (end == p)
2560             y = strtol(end+1, &end, 10);
2561         if (x > 0 && y > 0)
2562             ar = (double)x / (double)y;
2563     } else
2564         ar = strtod(arg, NULL);
2565
2566     if (!ar) {
2567         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2568         return AVERROR(EINVAL);
2569     }
2570     frame_aspect_ratio = ar;
2571     return 0;
2572 }
2573
2574 static int opt_top_field_first(const char *opt, const char *arg)
2575 {
2576     top_field_first = parse_number_or_die(opt, arg, OPT_INT, 0, 1);
2577     return 0;
2578 }
2579
2580 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2581 {
2582     return parse_option(o, "codec:a", arg, options);
2583 }
2584
2585 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2586 {
2587     return parse_option(o, "codec:v", arg, options);
2588 }
2589
2590 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2591 {
2592     return parse_option(o, "codec:s", arg, options);
2593 }
2594
2595 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2596 {
2597     return parse_option(o, "codec:d", arg, options);
2598 }
2599
2600 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2601 {
2602     StreamMap *m = NULL;
2603     int i, negative = 0, file_idx;
2604     int sync_file_idx = -1, sync_stream_idx;
2605     char *p, *sync;
2606     char *map;
2607
2608     if (*arg == '-') {
2609         negative = 1;
2610         arg++;
2611     }
2612     map = av_strdup(arg);
2613
2614     /* parse sync stream first, just pick first matching stream */
2615     if (sync = strchr(map, ',')) {
2616         *sync = 0;
2617         sync_file_idx = strtol(sync + 1, &sync, 0);
2618         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2619             av_log(NULL, AV_LOG_ERROR, "Invalid sync file index: %d.\n", sync_file_idx);
2620             exit_program(1);
2621         }
2622         if (*sync)
2623             sync++;
2624         for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2625             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2626                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2627                 sync_stream_idx = i;
2628                 break;
2629             }
2630         if (i == input_files[sync_file_idx].nb_streams) {
2631             av_log(NULL, AV_LOG_ERROR, "Sync stream specification in map %s does not "
2632                                        "match any streams.\n", arg);
2633             exit_program(1);
2634         }
2635     }
2636
2637
2638     file_idx = strtol(map, &p, 0);
2639     if (file_idx >= nb_input_files || file_idx < 0) {
2640         av_log(NULL, AV_LOG_ERROR, "Invalid input file index: %d.\n", file_idx);
2641         exit_program(1);
2642     }
2643     if (negative)
2644         /* disable some already defined maps */
2645         for (i = 0; i < o->nb_stream_maps; i++) {
2646             m = &o->stream_maps[i];
2647             if (check_stream_specifier(input_files[m->file_index].ctx,
2648                                        input_files[m->file_index].ctx->streams[m->stream_index],
2649                                        *p == ':' ? p + 1 : p) > 0)
2650                 m->disabled = 1;
2651         }
2652     else
2653         for (i = 0; i < input_files[file_idx].nb_streams; i++) {
2654             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2655                         *p == ':' ? p + 1 : p) <= 0)
2656                 continue;
2657             o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
2658                                         &o->nb_stream_maps, o->nb_stream_maps + 1);
2659             m = &o->stream_maps[o->nb_stream_maps - 1];
2660
2661             m->file_index   = file_idx;
2662             m->stream_index = i;
2663
2664             if (sync_file_idx >= 0) {
2665                 m->sync_file_index   = sync_file_idx;
2666                 m->sync_stream_index = sync_stream_idx;
2667             } else {
2668                 m->sync_file_index   = file_idx;
2669                 m->sync_stream_index = i;
2670             }
2671         }
2672
2673     if (!m) {
2674         av_log(NULL, AV_LOG_ERROR, "Stream map '%s' matches no streams.\n", arg);
2675         exit_program(1);
2676     }
2677
2678     av_freep(&map);
2679     return 0;
2680 }
2681
2682 static void parse_meta_type(char *arg, char *type, int *index)
2683 {
2684     if (*arg) {
2685         *type = *arg;
2686         switch (*arg) {
2687         case 'g':
2688             break;
2689         case 's':
2690         case 'c':
2691         case 'p':
2692             if (*(++arg) == ':')
2693                 *index = strtol(++arg, NULL, 0);
2694             break;
2695         default:
2696             fprintf(stderr, "Invalid metadata type %c.\n", *arg);
2697             exit_program(1);
2698         }
2699     } else
2700         *type = 'g';
2701 }
2702
2703 static int opt_map_metadata(OptionsContext *o, const char *opt, const char *arg)
2704 {
2705     MetadataMap *m, *m1;
2706     char *p;
2707
2708     o->meta_data_maps = grow_array(o->meta_data_maps, sizeof(*o->meta_data_maps),
2709                                    &o->nb_meta_data_maps, o->nb_meta_data_maps + 1);
2710
2711     m = &o->meta_data_maps[o->nb_meta_data_maps - 1][1];
2712     m->file = strtol(arg, &p, 0);
2713     parse_meta_type(*p ? p + 1 : p, &m->type, &m->index);
2714
2715     m1 = &o->meta_data_maps[o->nb_meta_data_maps - 1][0];
2716     if (p = strchr(opt, ':'))
2717         parse_meta_type(p + 1, &m1->type, &m1->index);
2718     else
2719         m1->type = 'g';
2720
2721     if (m->type == 'g' || m1->type == 'g')
2722         o->metadata_global_manual = 1;
2723     if (m->type == 's' || m1->type == 's')
2724         o->metadata_streams_manual = 1;
2725     if (m->type == 'c' || m1->type == 'c')
2726         o->metadata_chapters_manual = 1;
2727
2728     return 0;
2729 }
2730
2731 static enum CodecID find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
2732 {
2733     const char *codec_string = encoder ? "encoder" : "decoder";
2734     AVCodec *codec;
2735
2736     if(!name)
2737         return CODEC_ID_NONE;
2738     codec = encoder ?
2739         avcodec_find_encoder_by_name(name) :
2740         avcodec_find_decoder_by_name(name);
2741     if(!codec) {
2742         av_log(NULL, AV_LOG_ERROR, "Unknown %s '%s'\n", codec_string, name);
2743         exit_program(1);
2744     }
2745     if(codec->type != type) {
2746         av_log(NULL, AV_LOG_ERROR, "Invalid %s type '%s'\n", codec_string, name);
2747         exit_program(1);
2748     }
2749     return codec->id;
2750 }
2751
2752 static AVCodec *choose_codec(OptionsContext *o, AVFormatContext *s, AVStream *st, enum AVMediaType type)
2753 {
2754     char *codec_name = NULL;
2755
2756     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
2757
2758     if (!codec_name) {
2759         if (s->oformat) {
2760             st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename, NULL, type);
2761             return avcodec_find_encoder(st->codec->codec_id);
2762         }
2763     } else if (!strcmp(codec_name, "copy"))
2764         st->stream_copy = 1;
2765     else {
2766         st->codec->codec_id = find_codec_or_die(codec_name, type, s->iformat == NULL);
2767         return s->oformat ? avcodec_find_encoder_by_name(codec_name) :
2768                             avcodec_find_decoder_by_name(codec_name);
2769     }
2770
2771     return NULL;
2772 }
2773
2774 /**
2775  * Add all the streams from the given input file to the global
2776  * list of input streams.
2777  */
2778 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
2779 {
2780     int i, rfps, rfps_base;
2781
2782     for (i = 0; i < ic->nb_streams; i++) {
2783         AVStream *st = ic->streams[i];
2784         AVCodecContext *dec = st->codec;
2785         InputStream *ist;
2786         double scale = 1.0;
2787
2788         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
2789         ist = &input_streams[nb_input_streams - 1];
2790         ist->st = st;
2791         ist->file_index = nb_input_files;
2792         ist->discard = 1;
2793         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
2794
2795         MATCH_PER_STREAM_OPT(ts_scale, dbl, scale, ic, st);
2796         ist->ts_scale = scale;
2797
2798         ist->dec = choose_codec(o, ic, st, dec->codec_type);
2799         if (!ist->dec)
2800             ist->dec = avcodec_find_decoder(dec->codec_id);
2801
2802         switch (dec->codec_type) {
2803         case AVMEDIA_TYPE_AUDIO:
2804             if (o->audio_disable)
2805                 st->discard= AVDISCARD_ALL;
2806             break;
2807         case AVMEDIA_TYPE_VIDEO:
2808             rfps      = ic->streams[i]->r_frame_rate.num;
2809             rfps_base = ic->streams[i]->r_frame_rate.den;
2810             if (dec->lowres) {
2811                 dec->flags |= CODEC_FLAG_EMU_EDGE;
2812                 dec->height >>= dec->lowres;
2813                 dec->width  >>= dec->lowres;
2814             }
2815             if(me_threshold)
2816                 dec->debug |= FF_DEBUG_MV;
2817
2818             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
2819
2820                 if (verbose >= 0)
2821                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
2822                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
2823
2824                     (float)rfps / rfps_base, rfps, rfps_base);
2825             }
2826
2827             if (o->video_disable)
2828                 st->discard= AVDISCARD_ALL;
2829             else if(video_discard)
2830                 st->discard= video_discard;
2831             break;
2832         case AVMEDIA_TYPE_DATA:
2833             break;
2834         case AVMEDIA_TYPE_SUBTITLE:
2835             if (o->subtitle_disable)
2836                 st->discard = AVDISCARD_ALL;
2837             break;
2838         case AVMEDIA_TYPE_ATTACHMENT:
2839         case AVMEDIA_TYPE_UNKNOWN:
2840             break;
2841         default:
2842             abort();
2843         }
2844     }
2845 }
2846
2847 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
2848 {
2849     AVFormatContext *ic;
2850     AVInputFormat *file_iformat = NULL;
2851     int err, i, ret;
2852     int64_t timestamp;
2853     uint8_t buf[128];
2854     AVDictionary **opts;
2855     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
2856
2857     if (o->format) {
2858         if (!(file_iformat = av_find_input_format(o->format))) {
2859             fprintf(stderr, "Unknown input format: '%s'\n", o->format);
2860             exit_program(1);
2861         }
2862     }
2863
2864     if (!strcmp(filename, "-"))
2865         filename = "pipe:";
2866
2867     using_stdin |= !strncmp(filename, "pipe:", 5) ||
2868                     !strcmp(filename, "/dev/stdin");
2869
2870     /* get default parameters from command line */
2871     ic = avformat_alloc_context();
2872     if (!ic) {
2873         print_error(filename, AVERROR(ENOMEM));
2874         exit_program(1);
2875     }
2876     if (o->nb_audio_sample_rate) {
2877         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
2878         av_dict_set(&format_opts, "sample_rate", buf, 0);
2879     }
2880     if (o->nb_audio_channels) {
2881         snprintf(buf, sizeof(buf), "%d", o->audio_channels[o->nb_audio_channels - 1].u.i);
2882         av_dict_set(&format_opts, "channels", buf, 0);
2883     }
2884     if (frame_rate.num) {
2885         snprintf(buf, sizeof(buf), "%d/%d", frame_rate.num, frame_rate.den);
2886         av_dict_set(&format_opts, "framerate", buf, 0);
2887     }
2888     if (frame_width && frame_height) {
2889         snprintf(buf, sizeof(buf), "%dx%d", frame_width, frame_height);
2890         av_dict_set(&format_opts, "video_size", buf, 0);
2891     }
2892     if (frame_pix_fmt != PIX_FMT_NONE)
2893         av_dict_set(&format_opts, "pixel_format", av_get_pix_fmt_name(frame_pix_fmt), 0);
2894
2895     ic->flags |= AVFMT_FLAG_NONBLOCK;
2896
2897     /* open the input file with generic libav function */
2898     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
2899     if (err < 0) {
2900         print_error(filename, err);
2901         exit_program(1);
2902     }
2903     assert_avoptions(format_opts);
2904
2905     /* apply forced codec ids */
2906     for (i = 0; i < ic->nb_streams; i++)
2907         choose_codec(o, ic, ic->streams[i], ic->streams[i]->codec->codec_type);
2908
2909     /* Set AVCodecContext options for avformat_find_stream_info */
2910     opts = setup_find_stream_info_opts(ic, codec_opts);
2911     orig_nb_streams = ic->nb_streams;
2912
2913     /* If not enough info to get the stream parameters, we decode the
2914        first frames to get it. (used in mpeg case for example) */
2915     ret = avformat_find_stream_info(ic, opts);
2916     if (ret < 0 && verbose >= 0) {
2917         fprintf(stderr, "%s: could not find codec parameters\n", filename);
2918         av_close_input_file(ic);
2919         exit_program(1);
2920     }
2921
2922     timestamp = o->start_time;
2923     /* add the stream start time */
2924     if (ic->start_time != AV_NOPTS_VALUE)
2925         timestamp += ic->start_time;
2926
2927     /* if seeking requested, we execute it */
2928     if (o->start_time != 0) {
2929         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
2930         if (ret < 0) {
2931             fprintf(stderr, "%s: could not seek to position %0.3f\n",
2932                     filename, (double)timestamp / AV_TIME_BASE);
2933         }
2934     }
2935
2936     /* update the current parameters so that they match the one of the input stream */
2937     add_input_streams(o, ic);
2938
2939     /* dump the file content */
2940     if (verbose >= 0)
2941         av_dump_format(ic, nb_input_files, filename, 0);
2942
2943     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
2944     input_files[nb_input_files - 1].ctx        = ic;
2945     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
2946     input_files[nb_input_files - 1].ts_offset  = o->input_ts_offset - (copy_ts ? 0 : timestamp);
2947     input_files[nb_input_files - 1].nb_streams = ic->nb_streams;
2948
2949     frame_rate    = (AVRational){0, 0};
2950     frame_pix_fmt = PIX_FMT_NONE;
2951     frame_height = 0;
2952     frame_width  = 0;
2953
2954     for (i = 0; i < orig_nb_streams; i++)
2955         av_dict_free(&opts[i]);
2956     av_freep(&opts);
2957
2958     reset_options(o);
2959     return 0;
2960 }
2961
2962 static void parse_forced_key_frames(char *kf, OutputStream *ost,
2963                                     AVCodecContext *avctx)
2964 {
2965     char *p;
2966     int n = 1, i;
2967     int64_t t;
2968
2969     for (p = kf; *p; p++)
2970         if (*p == ',')
2971             n++;
2972     ost->forced_kf_count = n;
2973     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
2974     if (!ost->forced_kf_pts) {
2975         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
2976         exit_program(1);
2977     }
2978     for (i = 0; i < n; i++) {
2979         p = i ? strchr(p, ',') + 1 : kf;
2980         t = parse_time_or_die("force_key_frames", p, 1);
2981         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2982     }
2983 }
2984
2985 static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
2986 {
2987     OutputStream *ost;
2988     AVStream *st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
2989     int idx      = oc->nb_streams - 1;
2990     int64_t max_frames = INT64_MAX;
2991     char *bsf = NULL, *next, *codec_tag = NULL;
2992     AVBitStreamFilterContext *bsfc, *bsfc_prev = NULL;
2993     double qscale = -1;
2994
2995     if (!st) {
2996         av_log(NULL, AV_LOG_ERROR, "Could not alloc stream.\n");
2997         exit_program(1);
2998     }
2999
3000     output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
3001                                 nb_output_streams + 1);
3002     ost = &output_streams[nb_output_streams - 1];
3003     ost->file_index = nb_output_files;
3004     ost->index = idx;
3005     ost->st    = st;
3006     st->codec->codec_type = type;
3007     ost->enc = choose_codec(o, oc, st, type);
3008     if (ost->enc) {
3009         ost->opts  = filter_codec_opts(codec_opts, ost->enc->id, oc, st);
3010     }
3011
3012     avcodec_get_context_defaults3(st->codec, ost->enc);
3013     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
3014
3015     MATCH_PER_STREAM_OPT(max_frames, i64, max_frames, oc, st);
3016     ost->max_frames = max_frames;
3017
3018     MATCH_PER_STREAM_OPT(bitstream_filters, str, bsf, oc, st);
3019     while (bsf) {
3020         if (next = strchr(bsf, ','))
3021             *next++ = 0;
3022         if (!(bsfc = av_bitstream_filter_init(bsf))) {
3023             av_log(NULL, AV_LOG_ERROR, "Unknown bitstream filter %s\n", bsf);
3024             exit_program(1);
3025         }
3026         if (bsfc_prev)
3027             bsfc_prev->next = bsfc;
3028         else
3029             ost->bitstream_filters = bsfc;
3030
3031         bsfc_prev = bsfc;
3032         bsf       = next;
3033     }
3034
3035     MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, oc, st);
3036     if (codec_tag) {
3037         uint32_t tag = strtol(codec_tag, &next, 0);
3038         if (*next)
3039             tag = AV_RL32(codec_tag);
3040         st->codec->codec_tag = tag;
3041     }
3042
3043     MATCH_PER_STREAM_OPT(qscale, dbl, qscale, oc, st);
3044     if (qscale >= 0 || same_quant) {
3045         st->codec->flags |= CODEC_FLAG_QSCALE;
3046         st->codec->global_quality = FF_QP2LAMBDA * qscale;
3047     }
3048
3049     ost->sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
3050     return ost;
3051 }
3052
3053 static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc)
3054 {
3055     AVStream *st;
3056     OutputStream *ost;
3057     AVCodecContext *video_enc;
3058
3059     ost = new_output_stream(o, oc, AVMEDIA_TYPE_VIDEO);
3060     st  = ost->st;
3061     if (!st->stream_copy) {
3062         ost->frame_aspect_ratio = frame_aspect_ratio;
3063         frame_aspect_ratio = 0;
3064 #if CONFIG_AVFILTER
3065         ost->avfilter= vfilters;
3066         vfilters = NULL;
3067 #endif
3068     }
3069
3070     video_enc = st->codec;
3071
3072     if(oc->oformat->flags & AVFMT_GLOBALHEADER) {
3073         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3074     }
3075
3076     if (st->stream_copy) {
3077         video_enc->sample_aspect_ratio =
3078         st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3079     } else {
3080         const char *p;
3081         int i;
3082
3083         if (frame_rate.num)
3084             ost->frame_rate = frame_rate;
3085
3086         video_enc->width = frame_width;
3087         video_enc->height = frame_height;
3088         video_enc->pix_fmt = frame_pix_fmt;
3089         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3090
3091         if(intra_matrix)
3092             video_enc->intra_matrix = intra_matrix;
3093         if(inter_matrix)
3094             video_enc->inter_matrix = inter_matrix;
3095
3096         p= video_rc_override_string;
3097         for(i=0; p; i++){
3098             int start, end, q;
3099             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3100             if(e!=3){
3101                 fprintf(stderr, "error parsing rc_override\n");
3102                 exit_program(1);
3103             }
3104             video_enc->rc_override=
3105                 av_realloc(video_enc->rc_override,
3106                            sizeof(RcOverride)*(i+1));
3107             video_enc->rc_override[i].start_frame= start;
3108             video_enc->rc_override[i].end_frame  = end;
3109             if(q>0){
3110                 video_enc->rc_override[i].qscale= q;
3111                 video_enc->rc_override[i].quality_factor= 1.0;
3112             }
3113             else{
3114                 video_enc->rc_override[i].qscale= 0;
3115                 video_enc->rc_override[i].quality_factor= -q/100.0;
3116             }
3117             p= strchr(p, '/');
3118             if(p) p++;
3119         }
3120         video_enc->rc_override_count=i;
3121         if (!video_enc->rc_initial_buffer_occupancy)
3122             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3123         video_enc->me_threshold= me_threshold;
3124         video_enc->intra_dc_precision= intra_dc_precision - 8;
3125
3126         if (do_psnr)
3127             video_enc->flags|= CODEC_FLAG_PSNR;
3128
3129         /* two pass mode */
3130         if (do_pass) {
3131             if (do_pass == 1) {
3132                 video_enc->flags |= CODEC_FLAG_PASS1;
3133             } else {
3134                 video_enc->flags |= CODEC_FLAG_PASS2;
3135             }
3136         }
3137
3138         if (forced_key_frames)
3139             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3140     }
3141
3142     /* reset some key parameters */
3143     av_freep(&forced_key_frames);
3144     frame_pix_fmt = PIX_FMT_NONE;
3145     return ost;
3146 }
3147
3148 static OutputStream *new_audio_stream(OptionsContext *o, AVFormatContext *oc)
3149 {
3150     AVStream *st;
3151     OutputStream *ost;
3152     AVCodecContext *audio_enc;
3153
3154     ost = new_output_stream(o, oc, AVMEDIA_TYPE_AUDIO);
3155     st  = ost->st;
3156
3157     audio_enc = st->codec;
3158     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3159
3160     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3161         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3162     }
3163     if (!st->stream_copy) {
3164         char *sample_fmt = NULL;
3165
3166         MATCH_PER_STREAM_OPT(audio_channels, i, audio_enc->channels, oc, st);
3167
3168         MATCH_PER_STREAM_OPT(sample_fmts, str, sample_fmt, oc, st);
3169         if (sample_fmt &&
3170             (audio_enc->sample_fmt = av_get_sample_fmt(sample_fmt)) == AV_SAMPLE_FMT_NONE) {
3171             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", sample_fmt);
3172             exit_program(1);
3173         }
3174
3175         MATCH_PER_STREAM_OPT(audio_sample_rate, i, audio_enc->sample_rate, oc, st);
3176     }
3177
3178     return ost;
3179 }
3180
3181 static OutputStream *new_data_stream(OptionsContext *o, AVFormatContext *oc)
3182 {
3183     AVStream *st;
3184     OutputStream *ost;
3185     AVCodecContext *data_enc;
3186
3187     ost = new_output_stream(o, oc, AVMEDIA_TYPE_DATA);
3188     st  = ost->st;
3189     data_enc = st->codec;
3190     if (!st->stream_copy) {
3191         fprintf(stderr, "Data stream encoding not supported yet (only streamcopy)\n");
3192         exit_program(1);
3193     }
3194
3195     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3196         data_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3197     }
3198
3199     return ost;
3200 }
3201
3202 static OutputStream *new_subtitle_stream(OptionsContext *o, AVFormatContext *oc)
3203 {
3204     AVStream *st;
3205     OutputStream *ost;
3206     AVCodecContext *subtitle_enc;
3207
3208     ost = new_output_stream(o, oc, AVMEDIA_TYPE_SUBTITLE);
3209     st  = ost->st;
3210     subtitle_enc = st->codec;
3211
3212     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3213
3214     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3215         subtitle_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3216     }
3217
3218     return ost;
3219 }
3220
3221 /* arg format is "output-stream-index:streamid-value". */
3222 static int opt_streamid(const char *opt, const char *arg)
3223 {
3224     int idx;
3225     char *p;
3226     char idx_str[16];
3227
3228     av_strlcpy(idx_str, arg, sizeof(idx_str));
3229     p = strchr(idx_str, ':');
3230     if (!p) {
3231         fprintf(stderr,
3232                 "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3233                 arg, opt);
3234         exit_program(1);
3235     }
3236     *p++ = '\0';
3237     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, INT_MAX);
3238     streamid_map = grow_array(streamid_map, sizeof(*streamid_map), &nb_streamid_map, idx+1);
3239     streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3240     return 0;
3241 }
3242
3243 static int copy_chapters(InputFile *ifile, OutputFile *ofile, int copy_metadata)
3244 {
3245     AVFormatContext *is = ifile->ctx;
3246     AVFormatContext *os = ofile->ctx;
3247     int i;
3248
3249     for (i = 0; i < is->nb_chapters; i++) {
3250         AVChapter *in_ch = is->chapters[i], *out_ch;
3251         int64_t ts_off   = av_rescale_q(ofile->start_time - ifile->ts_offset,
3252                                       AV_TIME_BASE_Q, in_ch->time_base);
3253         int64_t rt       = (ofile->recording_time == INT64_MAX) ? INT64_MAX :
3254                            av_rescale_q(ofile->recording_time, AV_TIME_BASE_Q, in_ch->time_base);
3255
3256
3257         if (in_ch->end < ts_off)
3258             continue;
3259         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
3260             break;
3261
3262         out_ch = av_mallocz(sizeof(AVChapter));
3263         if (!out_ch)
3264             return AVERROR(ENOMEM);
3265
3266         out_ch->id        = in_ch->id;
3267         out_ch->time_base = in_ch->time_base;
3268         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
3269         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
3270
3271         if (copy_metadata)
3272             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
3273
3274         os->nb_chapters++;
3275         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
3276         if (!os->chapters)
3277             return AVERROR(ENOMEM);
3278         os->chapters[os->nb_chapters - 1] = out_ch;
3279     }
3280     return 0;
3281 }
3282
3283 static int read_avserver_streams(OptionsContext *o, AVFormatContext *s, const char *filename)
3284 {
3285     int i, err;
3286     AVFormatContext *ic = NULL;
3287
3288     err = avformat_open_input(&ic, filename, NULL, NULL);
3289     if (err < 0)
3290         return err;
3291     /* copy stream format */
3292     for(i=0;i<ic->nb_streams;i++) {
3293         AVStream *st;
3294         OutputStream *ost;
3295         AVCodec *codec;
3296
3297         codec = avcodec_find_encoder(ic->streams[i]->codec->codec_id);
3298         ost   = new_output_stream(o, s, codec->type);
3299         st    = ost->st;
3300
3301         // FIXME: a more elegant solution is needed
3302         memcpy(st, ic->streams[i], sizeof(AVStream));
3303         st->info = NULL;
3304         avcodec_copy_context(st->codec, ic->streams[i]->codec);
3305
3306         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && !st->stream_copy)
3307             choose_sample_fmt(st, codec);
3308         else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && !st->stream_copy)
3309             choose_pixel_fmt(st, codec);
3310     }
3311
3312     av_close_input_file(ic);
3313     return 0;
3314 }
3315
3316 static void opt_output_file(void *optctx, const char *filename)
3317 {
3318     OptionsContext *o = optctx;
3319     AVFormatContext *oc;
3320     int i, err;
3321     AVOutputFormat *file_oformat;
3322     OutputStream *ost;
3323     InputStream  *ist;
3324
3325     if (!strcmp(filename, "-"))
3326         filename = "pipe:";
3327
3328     oc = avformat_alloc_context();
3329     if (!oc) {
3330         print_error(filename, AVERROR(ENOMEM));
3331         exit_program(1);
3332     }
3333
3334     if (o->format) {
3335         file_oformat = av_guess_format(o->format, NULL, NULL);
3336         if (!file_oformat) {
3337             fprintf(stderr, "Requested output format '%s' is not a suitable output format\n", o->format);
3338             exit_program(1);
3339         }
3340     } else {
3341         file_oformat = av_guess_format(NULL, filename, NULL);
3342         if (!file_oformat) {
3343             fprintf(stderr, "Unable to find a suitable output format for '%s'\n",
3344                     filename);
3345             exit_program(1);
3346         }
3347     }
3348
3349     oc->oformat = file_oformat;
3350     av_strlcpy(oc->filename, filename, sizeof(oc->filename));
3351
3352     if (!strcmp(file_oformat->name, "ffm") &&
3353         av_strstart(filename, "http:", NULL)) {
3354         /* special case for files sent to avserver: we get the stream
3355            parameters from avserver */
3356         int err = read_avserver_streams(o, oc, filename);
3357         if (err < 0) {
3358             print_error(filename, err);
3359             exit_program(1);
3360         }
3361     } else if (!o->nb_stream_maps) {
3362         /* pick the "best" stream of each type */
3363 #define NEW_STREAM(type, index)\
3364         if (index >= 0) {\
3365             ost = new_ ## type ## _stream(o, oc);\
3366             ost->source_index = index;\
3367             ost->sync_ist     = &input_streams[index];\
3368             input_streams[index].discard = 0;\
3369         }
3370
3371         /* video: highest resolution */
3372         if (!o->video_disable && oc->oformat->video_codec != CODEC_ID_NONE) {
3373             int area = 0, idx = -1;
3374             for (i = 0; i < nb_input_streams; i++) {
3375                 ist = &input_streams[i];
3376                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3377                     ist->st->codec->width * ist->st->codec->height > area) {
3378                     area = ist->st->codec->width * ist->st->codec->height;
3379                     idx = i;
3380                 }
3381             }
3382             NEW_STREAM(video, idx);
3383         }
3384
3385         /* audio: most channels */
3386         if (!o->audio_disable && oc->oformat->audio_codec != CODEC_ID_NONE) {
3387             int channels = 0, idx = -1;
3388             for (i = 0; i < nb_input_streams; i++) {
3389                 ist = &input_streams[i];
3390                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
3391                     ist->st->codec->channels > channels) {
3392                     channels = ist->st->codec->channels;
3393                     idx = i;
3394                 }
3395             }
3396             NEW_STREAM(audio, idx);
3397         }
3398
3399         /* subtitles: pick first */
3400         if (!o->subtitle_disable && oc->oformat->subtitle_codec != CODEC_ID_NONE) {
3401             for (i = 0; i < nb_input_streams; i++)
3402                 if (input_streams[i].st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3403                     NEW_STREAM(subtitle, i);
3404                     break;
3405                 }
3406         }
3407         /* do something with data? */
3408     } else {
3409         for (i = 0; i < o->nb_stream_maps; i++) {
3410             StreamMap *map = &o->stream_maps[i];
3411
3412             if (map->disabled)
3413                 continue;
3414
3415             ist = &input_streams[input_files[map->file_index].ist_index + map->stream_index];
3416             switch (ist->st->codec->codec_type) {
3417             case AVMEDIA_TYPE_VIDEO:    ost = new_video_stream(o, oc);    break;
3418             case AVMEDIA_TYPE_AUDIO:    ost = new_audio_stream(o, oc);    break;
3419             case AVMEDIA_TYPE_SUBTITLE: ost = new_subtitle_stream(o, oc); break;
3420             case AVMEDIA_TYPE_DATA:     ost = new_data_stream(o, oc);     break;
3421             default:
3422                 av_log(NULL, AV_LOG_ERROR, "Cannot map stream #%d.%d - unsupported type.\n",
3423                        map->file_index, map->stream_index);
3424                 exit_program(1);
3425             }
3426
3427             ost->source_index = input_files[map->file_index].ist_index + map->stream_index;
3428             ost->sync_ist = &input_streams[input_files[map->sync_file_index].ist_index +
3429                                            map->sync_stream_index];
3430             ist->discard = 0;
3431         }
3432     }
3433
3434     output_files = grow_array(output_files, sizeof(*output_files), &nb_output_files, nb_output_files + 1);
3435     output_files[nb_output_files - 1].ctx       = oc;
3436     output_files[nb_output_files - 1].ost_index = nb_output_streams - oc->nb_streams;
3437     output_files[nb_output_files - 1].recording_time = o->recording_time;
3438     output_files[nb_output_files - 1].start_time     = o->start_time;
3439     output_files[nb_output_files - 1].limit_filesize = o->limit_filesize;
3440     av_dict_copy(&output_files[nb_output_files - 1].opts, format_opts, 0);
3441
3442     /* check filename in case of an image number is expected */
3443     if (oc->oformat->flags & AVFMT_NEEDNUMBER) {
3444         if (!av_filename_number_test(oc->filename)) {
3445             print_error(oc->filename, AVERROR(EINVAL));
3446             exit_program(1);
3447         }
3448     }
3449
3450     if (!(oc->oformat->flags & AVFMT_NOFILE)) {
3451         /* test if it already exists to avoid loosing precious files */
3452         if (!file_overwrite &&
3453             (strchr(filename, ':') == NULL ||
3454              filename[1] == ':' ||
3455              av_strstart(filename, "file:", NULL))) {
3456             if (avio_check(filename, 0) == 0) {
3457                 if (!using_stdin) {
3458                     fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3459                     fflush(stderr);
3460                     if (!read_yesno()) {
3461                         fprintf(stderr, "Not overwriting - exiting\n");
3462                         exit_program(1);
3463                     }
3464                 }
3465                 else {
3466                     fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
3467                     exit_program(1);
3468                 }
3469             }
3470         }
3471
3472         /* open the file */
3473         if ((err = avio_open(&oc->pb, filename, AVIO_FLAG_WRITE)) < 0) {
3474             print_error(filename, err);
3475             exit_program(1);
3476         }
3477     }
3478
3479     oc->preload   = (int)(o->mux_preload   * AV_TIME_BASE);
3480     oc->max_delay = (int)(o->mux_max_delay * AV_TIME_BASE);
3481     oc->flags |= AVFMT_FLAG_NONBLOCK;
3482
3483     /* copy chapters */
3484     if (o->chapters_input_file >= nb_input_files) {
3485         if (o->chapters_input_file == INT_MAX) {
3486             /* copy chapters from the first input file that has them*/
3487             o->chapters_input_file = -1;
3488             for (i = 0; i < nb_input_files; i++)
3489                 if (input_files[i].ctx->nb_chapters) {
3490                     o->chapters_input_file = i;
3491                     break;
3492                 }
3493         } else {
3494             av_log(NULL, AV_LOG_ERROR, "Invalid input file index %d in chapter mapping.\n",
3495                    o->chapters_input_file);
3496             exit_program(1);
3497         }
3498     }
3499     if (o->chapters_input_file >= 0)
3500         copy_chapters(&input_files[o->chapters_input_file], &output_files[nb_output_files - 1],
3501                       o->metadata_chapters_manual);
3502
3503     /* copy metadata */
3504     for (i = 0; i < o->nb_meta_data_maps; i++) {
3505         AVFormatContext *files[2];
3506         AVDictionary    **meta[2];
3507         int j;
3508
3509 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
3510         if ((index) < 0 || (index) >= (nb_elems)) {\
3511             av_log(NULL, AV_LOG_ERROR, "Invalid %s index %d while processing metadata maps\n",\
3512                      (desc), (index));\
3513             exit_program(1);\
3514         }
3515
3516         int in_file_index = o->meta_data_maps[i][1].file;
3517         if (in_file_index < 0)
3518             continue;
3519         METADATA_CHECK_INDEX(in_file_index, nb_input_files, "input file")
3520
3521         files[0] = oc;
3522         files[1] = input_files[in_file_index].ctx;
3523
3524         for (j = 0; j < 2; j++) {
3525             MetadataMap *map = &o->meta_data_maps[i][j];
3526
3527             switch (map->type) {
3528             case 'g':
3529                 meta[j] = &files[j]->metadata;
3530                 break;
3531             case 's':
3532                 METADATA_CHECK_INDEX(map->index, files[j]->nb_streams, "stream")
3533                 meta[j] = &files[j]->streams[map->index]->metadata;
3534                 break;
3535             case 'c':
3536                 METADATA_CHECK_INDEX(map->index, files[j]->nb_chapters, "chapter")
3537                 meta[j] = &files[j]->chapters[map->index]->metadata;
3538                 break;
3539             case 'p':
3540                 METADATA_CHECK_INDEX(map->index, files[j]->nb_programs, "program")
3541                 meta[j] = &files[j]->programs[map->index]->metadata;
3542                 break;
3543             }
3544         }
3545
3546         av_dict_copy(meta[0], *meta[1], AV_DICT_DONT_OVERWRITE);
3547     }
3548
3549     /* copy global metadata by default */
3550     if (!o->metadata_global_manual && nb_input_files)
3551         av_dict_copy(&oc->metadata, input_files[0].ctx->metadata,
3552                      AV_DICT_DONT_OVERWRITE);
3553     if (!o->metadata_streams_manual)
3554         for (i = output_files[nb_output_files - 1].ost_index; i < nb_output_streams; i++) {
3555             InputStream *ist = &input_streams[output_streams[i].source_index];
3556             av_dict_copy(&output_streams[i].st->metadata, ist->st->metadata, AV_DICT_DONT_OVERWRITE);
3557         }
3558
3559     /* process manually set metadata */
3560     for (i = 0; i < o->nb_metadata; i++) {
3561         AVDictionary **m;
3562         char type, *val;
3563         int index = 0;
3564
3565         val = strchr(o->metadata[i].u.str, '=');
3566         if (!val) {
3567             av_log(NULL, AV_LOG_ERROR, "No '=' character in metadata string %s.\n",
3568                    o->metadata[i].u.str);
3569             exit_program(1);
3570         }
3571         *val++ = 0;
3572
3573         parse_meta_type(o->metadata[i].specifier, &type, &index);
3574         switch (type) {
3575         case 'g':
3576             m = &oc->metadata;
3577             break;
3578         case 's':
3579             if (index < 0 || index >= oc->nb_streams) {
3580                 av_log(NULL, AV_LOG_ERROR, "Invalid stream index %d in metadata specifier.\n", index);
3581                 exit_program(1);
3582             }
3583             m = &oc->streams[i]->metadata;
3584             break;
3585         case 'c':
3586             if (index < 0 || index >= oc->nb_chapters) {
3587                 av_log(NULL, AV_LOG_ERROR, "Invalid chapter index %d in metadata specifier.\n", index);
3588                 exit_program(1);
3589             }
3590             m = &oc->chapters[i]->metadata;
3591             break;
3592         default:
3593             av_log(NULL, AV_LOG_ERROR, "Invalid metadata specifier %s.\n", o->metadata[i].specifier);
3594             exit_program(1);
3595         }
3596
3597         av_dict_set(m, o->metadata[i].u.str, *val ? val : NULL, 0);
3598     }
3599
3600     frame_rate    = (AVRational){0, 0};
3601     frame_width   = 0;
3602     frame_height  = 0;
3603
3604     av_freep(&streamid_map);
3605     nb_streamid_map = 0;
3606
3607     av_freep(&forced_key_frames);
3608     reset_options(o);
3609 }
3610
3611 /* same option as mencoder */
3612 static int opt_pass(const char *opt, const char *arg)
3613 {
3614     do_pass = parse_number_or_die(opt, arg, OPT_INT, 1, 2);
3615     return 0;
3616 }
3617
3618 static int64_t getutime(void)
3619 {
3620 #if HAVE_GETRUSAGE
3621     struct rusage rusage;
3622
3623     getrusage(RUSAGE_SELF, &rusage);
3624     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3625 #elif HAVE_GETPROCESSTIMES
3626     HANDLE proc;
3627     FILETIME c, e, k, u;
3628     proc = GetCurrentProcess();
3629     GetProcessTimes(proc, &c, &e, &k, &u);
3630     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3631 #else
3632     return av_gettime();
3633 #endif
3634 }
3635
3636 static int64_t getmaxrss(void)
3637 {
3638 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3639     struct rusage rusage;
3640     getrusage(RUSAGE_SELF, &rusage);
3641     return (int64_t)rusage.ru_maxrss * 1024;
3642 #elif HAVE_GETPROCESSMEMORYINFO
3643     HANDLE proc;
3644     PROCESS_MEMORY_COUNTERS memcounters;
3645     proc = GetCurrentProcess();
3646     memcounters.cb = sizeof(memcounters);
3647     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3648     return memcounters.PeakPagefileUsage;
3649 #else
3650     return 0;
3651 #endif
3652 }
3653
3654 static void parse_matrix_coeffs(uint16_t *dest, const char *str)
3655 {
3656     int i;
3657     const char *p = str;
3658     for(i = 0;; i++) {
3659         dest[i] = atoi(p);
3660         if(i == 63)
3661             break;
3662         p = strchr(p, ',');