5e50db3389df96f1bff27afcc02fe231bf556972
[ffmpeg.git] / ffmpeg.c
1 /*
2  * FFmpeg main
3  * Copyright (c) 2000-2003 Fabrice Bellard
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 /* needed for usleep() */
23 #define _XOPEN_SOURCE 600
24
25 #include "config.h"
26 #include <ctype.h>
27 #include <string.h>
28 #include <math.h>
29 #include <stdlib.h>
30 #include <errno.h>
31 #include <signal.h>
32 #include <limits.h>
33 #include <unistd.h>
34 #include "libavformat/avformat.h"
35 #include "libavdevice/avdevice.h"
36 #include "libswscale/swscale.h"
37 #include "libavcodec/opt.h"
38 #include "libavcodec/audioconvert.h"
39 #include "libavutil/audioconvert.h"
40 #include "libavutil/parseutils.h"
41 #include "libavutil/samplefmt.h"
42 #include "libavutil/colorspace.h"
43 #include "libavutil/fifo.h"
44 #include "libavutil/intreadwrite.h"
45 #include "libavutil/pixdesc.h"
46 #include "libavutil/avstring.h"
47 #include "libavutil/libm.h"
48 #include "libavformat/os_support.h"
49
50 #if CONFIG_AVFILTER
51 # include "libavfilter/avfilter.h"
52 # include "libavfilter/avfiltergraph.h"
53 # include "libavfilter/vsrc_buffer.h"
54 #endif
55
56 #if HAVE_SYS_RESOURCE_H
57 #include <sys/types.h>
58 #include <sys/time.h>
59 #include <sys/resource.h>
60 #elif HAVE_GETPROCESSTIMES
61 #include <windows.h>
62 #endif
63 #if HAVE_GETPROCESSMEMORYINFO
64 #include <windows.h>
65 #include <psapi.h>
66 #endif
67
68 #if HAVE_SYS_SELECT_H
69 #include <sys/select.h>
70 #endif
71
72 #if HAVE_KBHIT
73 #include <conio.h>
74 #endif
75 #include <time.h>
76
77 #include "cmdutils.h"
78
79 #include "libavutil/avassert.h"
80
81 const char program_name[] = "FFmpeg";
82 const int program_birth_year = 2000;
83
84 /* select an input stream for an output stream */
85 typedef struct AVStreamMap {
86     int file_index;
87     int stream_index;
88     int sync_file_index;
89     int sync_stream_index;
90 } AVStreamMap;
91
92 /**
93  * select an input file for an output file
94  */
95 typedef struct AVMetaDataMap {
96     int  file;      //< file index
97     char type;      //< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
98     int  index;     //< stream/chapter/program number
99 } AVMetaDataMap;
100
101 typedef struct AVChapterMap {
102     int in_file;
103     int out_file;
104 } AVChapterMap;
105
106 static const OptionDef options[];
107
108 #define MAX_FILES 100
109 #if !FF_API_MAX_STREAMS
110 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
111 #endif
112
113 static const char *last_asked_format = NULL;
114 static AVFormatContext *input_files[MAX_FILES];
115 static int64_t input_files_ts_offset[MAX_FILES];
116 static double *input_files_ts_scale[MAX_FILES] = {NULL};
117 static AVCodec **input_codecs = NULL;
118 static int nb_input_files = 0;
119 static int nb_input_codecs = 0;
120 static int nb_input_files_ts_scale[MAX_FILES] = {0};
121
122 static AVFormatContext *output_files[MAX_FILES];
123 static AVCodec **output_codecs = NULL;
124 static int nb_output_files = 0;
125 static int nb_output_codecs = 0;
126
127 static AVStreamMap *stream_maps = NULL;
128 static int nb_stream_maps;
129
130 /* first item specifies output metadata, second is input */
131 static AVMetaDataMap (*meta_data_maps)[2] = NULL;
132 static int nb_meta_data_maps;
133 static int metadata_global_autocopy   = 1;
134 static int metadata_streams_autocopy  = 1;
135 static int metadata_chapters_autocopy = 1;
136
137 static AVChapterMap *chapter_maps = NULL;
138 static int nb_chapter_maps;
139
140 /* indexed by output file stream index */
141 static int *streamid_map = NULL;
142 static int nb_streamid_map = 0;
143
144 static int frame_width  = 0;
145 static int frame_height = 0;
146 static float frame_aspect_ratio = 0;
147 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
148 static enum AVSampleFormat audio_sample_fmt = AV_SAMPLE_FMT_NONE;
149 static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
150 static AVRational frame_rate;
151 static float video_qscale = 0;
152 static uint16_t *intra_matrix = NULL;
153 static uint16_t *inter_matrix = NULL;
154 static const char *video_rc_override_string=NULL;
155 static int video_disable = 0;
156 static int video_discard = 0;
157 static char *video_codec_name = NULL;
158 static unsigned int video_codec_tag = 0;
159 static char *video_language = NULL;
160 static int same_quality = 0;
161 static int do_deinterlace = 0;
162 static int top_field_first = -1;
163 static int me_threshold = 0;
164 static int intra_dc_precision = 8;
165 static int loop_input = 0;
166 static int loop_output = AVFMT_NOOUTPUTLOOP;
167 static int qp_hist = 0;
168 #if CONFIG_AVFILTER
169 static char *vfilters = NULL;
170 static AVFilterGraph *graph = NULL;
171 #endif
172
173 static int intra_only = 0;
174 static int audio_sample_rate = 44100;
175 static int64_t channel_layout = 0;
176 #define QSCALE_NONE -99999
177 static float audio_qscale = QSCALE_NONE;
178 static int audio_disable = 0;
179 static int audio_channels = 1;
180 static char  *audio_codec_name = NULL;
181 static unsigned int audio_codec_tag = 0;
182 static char *audio_language = NULL;
183
184 static int subtitle_disable = 0;
185 static char *subtitle_codec_name = NULL;
186 static char *subtitle_language = NULL;
187 static unsigned int subtitle_codec_tag = 0;
188
189 static float mux_preload= 0.5;
190 static float mux_max_delay= 0.7;
191
192 static int64_t recording_time = INT64_MAX;
193 static int64_t start_time = 0;
194 static int64_t recording_timestamp = 0;
195 static int64_t input_ts_offset = 0;
196 static int file_overwrite = 0;
197 static AVMetadata *metadata;
198 static int do_benchmark = 0;
199 static int do_hex_dump = 0;
200 static int do_pkt_dump = 0;
201 static int do_psnr = 0;
202 static int do_pass = 0;
203 static char *pass_logfilename_prefix = NULL;
204 static int audio_stream_copy = 0;
205 static int video_stream_copy = 0;
206 static int subtitle_stream_copy = 0;
207 static int video_sync_method= -1;
208 static int audio_sync_method= 0;
209 static float audio_drift_threshold= 0.1;
210 static int copy_ts= 0;
211 static int copy_tb;
212 static int opt_shortest = 0;
213 static int video_global_header = 0;
214 static char *vstats_filename;
215 static FILE *vstats_file;
216 static int opt_programid = 0;
217 static int copy_initial_nonkeyframes = 0;
218
219 static int rate_emu = 0;
220
221 static int  video_channel = 0;
222 static char *video_standard;
223
224 static int audio_volume = 256;
225
226 static int exit_on_error = 0;
227 static int using_stdin = 0;
228 static int verbose = 1;
229 static int thread_count= 1;
230 static int q_pressed = 0;
231 static int64_t video_size = 0;
232 static int64_t audio_size = 0;
233 static int64_t extra_size = 0;
234 static int nb_frames_dup = 0;
235 static int nb_frames_drop = 0;
236 static int input_sync;
237 static uint64_t limit_filesize = 0;
238 static int force_fps = 0;
239 static char *forced_key_frames = NULL;
240
241 static float dts_delta_threshold = 10;
242
243 static unsigned int sws_flags = SWS_BICUBIC;
244
245 static int64_t timer_start;
246
247 static uint8_t *audio_buf;
248 static uint8_t *audio_out;
249 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
250
251 static short *samples;
252
253 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
254 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
255 static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL;
256
257 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
258
259 struct AVInputStream;
260
261 typedef struct AVOutputStream {
262     int file_index;          /* file index */
263     int index;               /* stream index in the output file */
264     int source_index;        /* AVInputStream index */
265     AVStream *st;            /* stream in the output file */
266     int encoding_needed;     /* true if encoding needed for this stream */
267     int frame_number;
268     /* input pts and corresponding output pts
269        for A/V sync */
270     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
271     struct AVInputStream *sync_ist; /* input stream to sync against */
272     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
273     AVBitStreamFilterContext *bitstream_filters;
274     /* video only */
275     int video_resample;
276     AVFrame pict_tmp;      /* temporary image for resampling */
277     struct SwsContext *img_resample_ctx; /* for image resampling */
278     int resample_height;
279     int resample_width;
280     int resample_pix_fmt;
281
282     /* full frame size of first frame */
283     int original_height;
284     int original_width;
285
286     /* forced key frames */
287     int64_t *forced_kf_pts;
288     int forced_kf_count;
289     int forced_kf_index;
290
291     /* audio only */
292     int audio_resample;
293     ReSampleContext *resample; /* for audio resampling */
294     int resample_sample_fmt;
295     int resample_channels;
296     int resample_sample_rate;
297     int reformat_pair;
298     AVAudioConvert *reformat_ctx;
299     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
300     FILE *logfile;
301 } AVOutputStream;
302
303 static AVOutputStream **output_streams_for_file[MAX_FILES] = { NULL };
304 static int nb_output_streams_for_file[MAX_FILES] = { 0 };
305
306 typedef struct AVInputStream {
307     int file_index;
308     int index;
309     AVStream *st;
310     int discard;             /* true if stream data should be discarded */
311     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
312     int64_t sample_index;      /* current sample */
313
314     int64_t       start;     /* time when read started */
315     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
316                                 is not defined */
317     int64_t       pts;       /* current pts */
318     PtsCorrectionContext pts_ctx;
319     int is_start;            /* is 1 at the start and after a discontinuity */
320     int showed_multi_packet_warning;
321     int is_past_recording_time;
322 #if CONFIG_AVFILTER
323     AVFilterContext *output_video_filter;
324     AVFilterContext *input_video_filter;
325     AVFrame *filter_frame;
326     int has_filter_frame;
327     AVFilterBufferRef *picref;
328 #endif
329 } AVInputStream;
330
331 typedef struct AVInputFile {
332     int eof_reached;      /* true if eof reached */
333     int ist_index;        /* index of first stream in ist_table */
334     int buffer_size;      /* current total buffer size */
335     int nb_streams;       /* nb streams we are aware of */
336 } AVInputFile;
337
338 #if CONFIG_AVFILTER
339
340 static int configure_filters(AVInputStream *ist, AVOutputStream *ost)
341 {
342     AVFilterContext *last_filter, *filter;
343     /** filter graph containing all filters including input & output */
344     AVCodecContext *codec = ost->st->codec;
345     AVCodecContext *icodec = ist->st->codec;
346     FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
347     char args[255];
348     int ret;
349
350     graph = avfilter_graph_alloc();
351
352     snprintf(args, 255, "%d:%d:%d:%d:%d", ist->st->codec->width,
353              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE);
354     ret = avfilter_graph_create_filter(&ist->input_video_filter, avfilter_get_by_name("buffer"),
355                                        "src", args, NULL, graph);
356     if (ret < 0)
357         return ret;
358     ret = avfilter_graph_create_filter(&ist->output_video_filter, &ffsink,
359                                        "out", NULL, &ffsink_ctx, graph);
360     if (ret < 0)
361         return ret;
362     last_filter = ist->input_video_filter;
363
364     if (codec->width  != icodec->width || codec->height != icodec->height) {
365         snprintf(args, 255, "%d:%d:flags=0x%X",
366                  codec->width,
367                  codec->height,
368                  (int)av_get_int(sws_opts, "sws_flags", NULL));
369         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
370                                                 NULL, args, NULL, graph)) < 0)
371             return ret;
372         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
373             return ret;
374         last_filter = filter;
375     }
376
377     snprintf(args, sizeof(args), "flags=0x%X", (int)av_get_int(sws_opts, "sws_flags", NULL));
378     graph->scale_sws_opts = av_strdup(args);
379
380     if (vfilters) {
381         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
382         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
383
384         outputs->name    = av_strdup("in");
385         outputs->filter_ctx = last_filter;
386         outputs->pad_idx = 0;
387         outputs->next    = NULL;
388
389         inputs->name    = av_strdup("out");
390         inputs->filter_ctx = ist->output_video_filter;
391         inputs->pad_idx = 0;
392         inputs->next    = NULL;
393
394         if ((ret = avfilter_graph_parse(graph, vfilters, inputs, outputs, NULL)) < 0)
395             return ret;
396         av_freep(&vfilters);
397     } else {
398         if ((ret = avfilter_link(last_filter, 0, ist->output_video_filter, 0)) < 0)
399             return ret;
400     }
401
402     if ((ret = avfilter_graph_config(graph, NULL)) < 0)
403         return ret;
404
405     codec->width  = ist->output_video_filter->inputs[0]->w;
406     codec->height = ist->output_video_filter->inputs[0]->h;
407
408     return 0;
409 }
410 #endif /* CONFIG_AVFILTER */
411
412 static void term_exit(void)
413 {
414     av_log(NULL, AV_LOG_QUIET, "");
415 }
416
417 static volatile int received_sigterm = 0;
418
419 static void
420 sigterm_handler(int sig)
421 {
422     received_sigterm = sig;
423     term_exit();
424 }
425
426 static void term_init(void)
427 {
428     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
429     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
430 #ifdef SIGXCPU
431     signal(SIGXCPU, sigterm_handler);
432 #endif
433 }
434
435 /* read a key without blocking */
436 static int read_key(void)
437 {
438 #if HAVE_KBHIT
439     if(kbhit())
440         return(getch());
441 #endif
442     return -1;
443 }
444
445 static int decode_interrupt_cb(void)
446 {
447     return q_pressed || (q_pressed = read_key() == 'q');
448 }
449
450 static int ffmpeg_exit(int ret)
451 {
452     int i;
453
454     /* close files */
455     for(i=0;i<nb_output_files;i++) {
456         AVFormatContext *s = output_files[i];
457         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
458             avio_close(s->pb);
459         avformat_free_context(s);
460         av_free(output_streams_for_file[i]);
461     }
462     for(i=0;i<nb_input_files;i++) {
463         av_close_input_file(input_files[i]);
464         av_free(input_files_ts_scale[i]);
465     }
466
467     av_free(intra_matrix);
468     av_free(inter_matrix);
469
470     if (vstats_file)
471         fclose(vstats_file);
472     av_free(vstats_filename);
473
474     av_free(streamid_map);
475     av_free(input_codecs);
476     av_free(output_codecs);
477     av_free(stream_maps);
478     av_free(meta_data_maps);
479
480     av_free(video_codec_name);
481     av_free(audio_codec_name);
482     av_free(subtitle_codec_name);
483
484     av_free(video_standard);
485
486     uninit_opts();
487     av_free(audio_buf);
488     av_free(audio_out);
489     allocated_audio_buf_size= allocated_audio_out_size= 0;
490     av_free(samples);
491
492 #if CONFIG_AVFILTER
493     avfilter_uninit();
494 #endif
495
496     if (received_sigterm) {
497         fprintf(stderr,
498             "Received signal %d: terminating.\n",
499             (int) received_sigterm);
500         exit (255);
501     }
502
503     exit(ret); /* not all OS-es handle main() return value */
504     return ret;
505 }
506
507 /* similar to ff_dynarray_add() and av_fast_realloc() */
508 static void *grow_array(void *array, int elem_size, int *size, int new_size)
509 {
510     if (new_size >= INT_MAX / elem_size) {
511         fprintf(stderr, "Array too big.\n");
512         ffmpeg_exit(1);
513     }
514     if (*size < new_size) {
515         uint8_t *tmp = av_realloc(array, new_size*elem_size);
516         if (!tmp) {
517             fprintf(stderr, "Could not alloc buffer.\n");
518             ffmpeg_exit(1);
519         }
520         memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
521         *size = new_size;
522         return tmp;
523     }
524     return array;
525 }
526
527 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
528 {
529     if(codec && codec->sample_fmts){
530         const enum AVSampleFormat *p= codec->sample_fmts;
531         for(; *p!=-1; p++){
532             if(*p == st->codec->sample_fmt)
533                 break;
534         }
535         if (*p == -1) {
536             av_log(NULL, AV_LOG_WARNING,
537                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
538                    av_get_sample_fmt_name(st->codec->sample_fmt),
539                    codec->name,
540                    av_get_sample_fmt_name(codec->sample_fmts[0]));
541             st->codec->sample_fmt = codec->sample_fmts[0];
542         }
543     }
544 }
545
546 static void choose_sample_rate(AVStream *st, AVCodec *codec)
547 {
548     if(codec && codec->supported_samplerates){
549         const int *p= codec->supported_samplerates;
550         int best=0;
551         int best_dist=INT_MAX;
552         for(; *p; p++){
553             int dist= abs(st->codec->sample_rate - *p);
554             if(dist < best_dist){
555                 best_dist= dist;
556                 best= *p;
557             }
558         }
559         if(best_dist){
560             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
561         }
562         st->codec->sample_rate= best;
563     }
564 }
565
566 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
567 {
568     if(codec && codec->pix_fmts){
569         const enum PixelFormat *p= codec->pix_fmts;
570         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
571             if(st->codec->codec_id==CODEC_ID_MJPEG){
572                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
573             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
574                 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};
575             }
576         }
577         for(; *p!=-1; p++){
578             if(*p == st->codec->pix_fmt)
579                 break;
580         }
581         if(*p == -1)
582             st->codec->pix_fmt = codec->pix_fmts[0];
583     }
584 }
585
586 static AVOutputStream *new_output_stream(AVFormatContext *oc, int file_idx)
587 {
588     int idx = oc->nb_streams - 1;
589     AVOutputStream *ost;
590
591     output_streams_for_file[file_idx] =
592         grow_array(output_streams_for_file[file_idx],
593                    sizeof(*output_streams_for_file[file_idx]),
594                    &nb_output_streams_for_file[file_idx],
595                    oc->nb_streams);
596     ost = output_streams_for_file[file_idx][idx] =
597         av_mallocz(sizeof(AVOutputStream));
598     if (!ost) {
599         fprintf(stderr, "Could not alloc output stream\n");
600         ffmpeg_exit(1);
601     }
602     ost->file_index = file_idx;
603     ost->index = idx;
604     return ost;
605 }
606
607 static int read_ffserver_streams(AVFormatContext *s, const char *filename)
608 {
609     int i, err;
610     AVFormatContext *ic;
611     int nopts = 0;
612
613     err = av_open_input_file(&ic, filename, NULL, FFM_PACKET_SIZE, NULL);
614     if (err < 0)
615         return err;
616     /* copy stream format */
617     s->nb_streams = 0;
618     for(i=0;i<ic->nb_streams;i++) {
619         AVStream *st;
620         AVCodec *codec;
621
622         s->nb_streams++;
623
624         // FIXME: a more elegant solution is needed
625         st = av_mallocz(sizeof(AVStream));
626         memcpy(st, ic->streams[i], sizeof(AVStream));
627         st->codec = avcodec_alloc_context();
628         if (!st->codec) {
629             print_error(filename, AVERROR(ENOMEM));
630             ffmpeg_exit(1);
631         }
632         avcodec_copy_context(st->codec, ic->streams[i]->codec);
633         s->streams[i] = st;
634
635         codec = avcodec_find_encoder(st->codec->codec_id);
636         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
637             if (audio_stream_copy) {
638                 st->stream_copy = 1;
639             } else
640                 choose_sample_fmt(st, codec);
641         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
642             if (video_stream_copy) {
643                 st->stream_copy = 1;
644             } else
645                 choose_pixel_fmt(st, codec);
646         }
647
648         if(st->codec->flags & CODEC_FLAG_BITEXACT)
649             nopts = 1;
650
651         new_output_stream(s, nb_output_files);
652     }
653
654     if (!nopts)
655         s->timestamp = av_gettime();
656
657     av_close_input_file(ic);
658     return 0;
659 }
660
661 static double
662 get_sync_ipts(const AVOutputStream *ost)
663 {
664     const AVInputStream *ist = ost->sync_ist;
665     return (double)(ist->pts - start_time)/AV_TIME_BASE;
666 }
667
668 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
669     int ret;
670
671     while(bsfc){
672         AVPacket new_pkt= *pkt;
673         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
674                                           &new_pkt.data, &new_pkt.size,
675                                           pkt->data, pkt->size,
676                                           pkt->flags & AV_PKT_FLAG_KEY);
677         if(a>0){
678             av_free_packet(pkt);
679             new_pkt.destruct= av_destruct_packet;
680         } else if(a<0){
681             fprintf(stderr, "%s failed for stream %d, codec %s",
682                     bsfc->filter->name, pkt->stream_index,
683                     avctx->codec ? avctx->codec->name : "copy");
684             print_error("", a);
685             if (exit_on_error)
686                 ffmpeg_exit(1);
687         }
688         *pkt= new_pkt;
689
690         bsfc= bsfc->next;
691     }
692
693     ret= av_interleaved_write_frame(s, pkt);
694     if(ret < 0){
695         print_error("av_interleaved_write_frame()", ret);
696         ffmpeg_exit(1);
697     }
698 }
699
700 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
701
702 static void do_audio_out(AVFormatContext *s,
703                          AVOutputStream *ost,
704                          AVInputStream *ist,
705                          unsigned char *buf, int size)
706 {
707     uint8_t *buftmp;
708     int64_t audio_out_size, audio_buf_size;
709     int64_t allocated_for_size= size;
710
711     int size_out, frame_bytes, ret, resample_changed;
712     AVCodecContext *enc= ost->st->codec;
713     AVCodecContext *dec= ist->st->codec;
714     int osize= av_get_bits_per_sample_fmt(enc->sample_fmt)/8;
715     int isize= av_get_bits_per_sample_fmt(dec->sample_fmt)/8;
716     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
717
718 need_realloc:
719     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
720     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
721     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
722     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
723     audio_buf_size*= osize*enc->channels;
724
725     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
726     if(coded_bps > 8*osize)
727         audio_out_size= audio_out_size * coded_bps / (8*osize);
728     audio_out_size += FF_MIN_BUFFER_SIZE;
729
730     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
731         fprintf(stderr, "Buffer sizes too large\n");
732         ffmpeg_exit(1);
733     }
734
735     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
736     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
737     if (!audio_buf || !audio_out){
738         fprintf(stderr, "Out of memory in do_audio_out\n");
739         ffmpeg_exit(1);
740     }
741
742     if (enc->channels != dec->channels)
743         ost->audio_resample = 1;
744
745     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
746                        ost->resample_channels    != dec->channels   ||
747                        ost->resample_sample_rate != dec->sample_rate;
748
749     if ((ost->audio_resample && !ost->resample) || resample_changed) {
750         if (resample_changed) {
751             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",
752                    ist->file_index, ist->index,
753                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
754                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
755             ost->resample_sample_fmt  = dec->sample_fmt;
756             ost->resample_channels    = dec->channels;
757             ost->resample_sample_rate = dec->sample_rate;
758             if (ost->resample)
759                 audio_resample_close(ost->resample);
760         }
761         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
762         if (audio_sync_method <= 1 &&
763             ost->resample_sample_fmt  == enc->sample_fmt &&
764             ost->resample_channels    == enc->channels   &&
765             ost->resample_sample_rate == enc->sample_rate) {
766             ost->resample = NULL;
767             ost->audio_resample = 0;
768         } else {
769             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
770                 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
771             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
772                                                    enc->sample_rate, dec->sample_rate,
773                                                    enc->sample_fmt,  dec->sample_fmt,
774                                                    16, 10, 0, 0.8);
775             if (!ost->resample) {
776                 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
777                         dec->channels, dec->sample_rate,
778                         enc->channels, enc->sample_rate);
779                 ffmpeg_exit(1);
780             }
781         }
782     }
783
784 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
785     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
786         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
787         if (ost->reformat_ctx)
788             av_audio_convert_free(ost->reformat_ctx);
789         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
790                                                    dec->sample_fmt, 1, NULL, 0);
791         if (!ost->reformat_ctx) {
792             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
793                 av_get_sample_fmt_name(dec->sample_fmt),
794                 av_get_sample_fmt_name(enc->sample_fmt));
795             ffmpeg_exit(1);
796         }
797         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
798     }
799
800     if(audio_sync_method){
801         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
802                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
803         double idelta= delta*dec->sample_rate / enc->sample_rate;
804         int byte_delta= ((int)idelta)*2*dec->channels;
805
806         //FIXME resample delay
807         if(fabs(delta) > 50){
808             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
809                 if(byte_delta < 0){
810                     byte_delta= FFMAX(byte_delta, -size);
811                     size += byte_delta;
812                     buf  -= byte_delta;
813                     if(verbose > 2)
814                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
815                     if(!size)
816                         return;
817                     ist->is_start=0;
818                 }else{
819                     static uint8_t *input_tmp= NULL;
820                     input_tmp= av_realloc(input_tmp, byte_delta + size);
821
822                     if(byte_delta > allocated_for_size - size){
823                         allocated_for_size= byte_delta + (int64_t)size;
824                         goto need_realloc;
825                     }
826                     ist->is_start=0;
827
828                     memset(input_tmp, 0, byte_delta);
829                     memcpy(input_tmp + byte_delta, buf, size);
830                     buf= input_tmp;
831                     size += byte_delta;
832                     if(verbose > 2)
833                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
834                 }
835             }else if(audio_sync_method>1){
836                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
837                 av_assert0(ost->audio_resample);
838                 if(verbose > 2)
839                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
840 //                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));
841                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
842             }
843         }
844     }else
845         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
846                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
847
848     if (ost->audio_resample) {
849         buftmp = audio_buf;
850         size_out = audio_resample(ost->resample,
851                                   (short *)buftmp, (short *)buf,
852                                   size / (dec->channels * isize));
853         size_out = size_out * enc->channels * osize;
854     } else {
855         buftmp = buf;
856         size_out = size;
857     }
858
859     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
860         const void *ibuf[6]= {buftmp};
861         void *obuf[6]= {audio_buf};
862         int istride[6]= {isize};
863         int ostride[6]= {osize};
864         int len= size_out/istride[0];
865         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
866             printf("av_audio_convert() failed\n");
867             if (exit_on_error)
868                 ffmpeg_exit(1);
869             return;
870         }
871         buftmp = audio_buf;
872         size_out = len*osize;
873     }
874
875     /* now encode as many frames as possible */
876     if (enc->frame_size > 1) {
877         /* output resampled raw samples */
878         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
879             fprintf(stderr, "av_fifo_realloc2() failed\n");
880             ffmpeg_exit(1);
881         }
882         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
883
884         frame_bytes = enc->frame_size * osize * enc->channels;
885
886         while (av_fifo_size(ost->fifo) >= frame_bytes) {
887             AVPacket pkt;
888             av_init_packet(&pkt);
889
890             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
891
892             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
893
894             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
895                                        (short *)audio_buf);
896             if (ret < 0) {
897                 fprintf(stderr, "Audio encoding failed\n");
898                 ffmpeg_exit(1);
899             }
900             audio_size += ret;
901             pkt.stream_index= ost->index;
902             pkt.data= audio_out;
903             pkt.size= ret;
904             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
905                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
906             pkt.flags |= AV_PKT_FLAG_KEY;
907             write_frame(s, &pkt, enc, ost->bitstream_filters);
908
909             ost->sync_opts += enc->frame_size;
910         }
911     } else {
912         AVPacket pkt;
913         av_init_packet(&pkt);
914
915         ost->sync_opts += size_out / (osize * enc->channels);
916
917         /* output a pcm frame */
918         /* determine the size of the coded buffer */
919         size_out /= osize;
920         if (coded_bps)
921             size_out = size_out*coded_bps/8;
922
923         if(size_out > audio_out_size){
924             fprintf(stderr, "Internal error, buffer size too small\n");
925             ffmpeg_exit(1);
926         }
927
928         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
929         ret = avcodec_encode_audio(enc, audio_out, size_out,
930                                    (short *)buftmp);
931         if (ret < 0) {
932             fprintf(stderr, "Audio encoding failed\n");
933             ffmpeg_exit(1);
934         }
935         audio_size += ret;
936         pkt.stream_index= ost->index;
937         pkt.data= audio_out;
938         pkt.size= ret;
939         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
940             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
941         pkt.flags |= AV_PKT_FLAG_KEY;
942         write_frame(s, &pkt, enc, ost->bitstream_filters);
943     }
944 }
945
946 static void pre_process_video_frame(AVInputStream *ist, AVPicture *picture, void **bufp)
947 {
948     AVCodecContext *dec;
949     AVPicture *picture2;
950     AVPicture picture_tmp;
951     uint8_t *buf = 0;
952
953     dec = ist->st->codec;
954
955     /* deinterlace : must be done before any resize */
956     if (do_deinterlace) {
957         int size;
958
959         /* create temporary picture */
960         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
961         buf = av_malloc(size);
962         if (!buf)
963             return;
964
965         picture2 = &picture_tmp;
966         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
967
968         if(avpicture_deinterlace(picture2, picture,
969                                  dec->pix_fmt, dec->width, dec->height) < 0) {
970             /* if error, do not deinterlace */
971             fprintf(stderr, "Deinterlacing failed\n");
972             av_free(buf);
973             buf = NULL;
974             picture2 = picture;
975         }
976     } else {
977         picture2 = picture;
978     }
979
980     if (picture != picture2)
981         *picture = *picture2;
982     *bufp = buf;
983 }
984
985 /* we begin to correct av delay at this threshold */
986 #define AV_DELAY_MAX 0.100
987
988 static void do_subtitle_out(AVFormatContext *s,
989                             AVOutputStream *ost,
990                             AVInputStream *ist,
991                             AVSubtitle *sub,
992                             int64_t pts)
993 {
994     static uint8_t *subtitle_out = NULL;
995     int subtitle_out_max_size = 1024 * 1024;
996     int subtitle_out_size, nb, i;
997     AVCodecContext *enc;
998     AVPacket pkt;
999
1000     if (pts == AV_NOPTS_VALUE) {
1001         fprintf(stderr, "Subtitle packets must have a pts\n");
1002         if (exit_on_error)
1003             ffmpeg_exit(1);
1004         return;
1005     }
1006
1007     enc = ost->st->codec;
1008
1009     if (!subtitle_out) {
1010         subtitle_out = av_malloc(subtitle_out_max_size);
1011     }
1012
1013     /* Note: DVB subtitle need one packet to draw them and one other
1014        packet to clear them */
1015     /* XXX: signal it in the codec context ? */
1016     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1017         nb = 2;
1018     else
1019         nb = 1;
1020
1021     for(i = 0; i < nb; i++) {
1022         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1023         // start_display_time is required to be 0
1024         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1025         sub->end_display_time -= sub->start_display_time;
1026         sub->start_display_time = 0;
1027         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1028                                                     subtitle_out_max_size, sub);
1029         if (subtitle_out_size < 0) {
1030             fprintf(stderr, "Subtitle encoding failed\n");
1031             ffmpeg_exit(1);
1032         }
1033
1034         av_init_packet(&pkt);
1035         pkt.stream_index = ost->index;
1036         pkt.data = subtitle_out;
1037         pkt.size = subtitle_out_size;
1038         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1039         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1040             /* XXX: the pts correction is handled here. Maybe handling
1041                it in the codec would be better */
1042             if (i == 0)
1043                 pkt.pts += 90 * sub->start_display_time;
1044             else
1045                 pkt.pts += 90 * sub->end_display_time;
1046         }
1047         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1048     }
1049 }
1050
1051 static int bit_buffer_size= 1024*256;
1052 static uint8_t *bit_buffer= NULL;
1053
1054 static void do_video_out(AVFormatContext *s,
1055                          AVOutputStream *ost,
1056                          AVInputStream *ist,
1057                          AVFrame *in_picture,
1058                          int *frame_size)
1059 {
1060     int nb_frames, i, ret;
1061     AVFrame *final_picture, *formatted_picture, *resampling_dst, *padding_src;
1062     AVCodecContext *enc, *dec;
1063     double sync_ipts;
1064
1065     enc = ost->st->codec;
1066     dec = ist->st->codec;
1067
1068     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1069
1070     /* by default, we output a single frame */
1071     nb_frames = 1;
1072
1073     *frame_size = 0;
1074
1075     if(video_sync_method){
1076         double vdelta = sync_ipts - ost->sync_opts;
1077         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1078         if (vdelta < -1.1)
1079             nb_frames = 0;
1080         else if (video_sync_method == 2 || (video_sync_method<0 && (s->oformat->flags & AVFMT_VARIABLE_FPS))){
1081             if(vdelta<=-0.6){
1082                 nb_frames=0;
1083             }else if(vdelta>0.6)
1084                 ost->sync_opts= lrintf(sync_ipts);
1085         }else if (vdelta > 1.1)
1086             nb_frames = lrintf(vdelta);
1087 //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);
1088         if (nb_frames == 0){
1089             ++nb_frames_drop;
1090             if (verbose>2)
1091                 fprintf(stderr, "*** drop!\n");
1092         }else if (nb_frames > 1) {
1093             nb_frames_dup += nb_frames - 1;
1094             if (verbose>2)
1095                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1096         }
1097     }else
1098         ost->sync_opts= lrintf(sync_ipts);
1099
1100     nb_frames= FFMIN(nb_frames, max_frames[AVMEDIA_TYPE_VIDEO] - ost->frame_number);
1101     if (nb_frames <= 0)
1102         return;
1103
1104     formatted_picture = in_picture;
1105     final_picture = formatted_picture;
1106     padding_src = formatted_picture;
1107     resampling_dst = &ost->pict_tmp;
1108
1109     if (   ost->resample_height != ist->st->codec->height
1110         || ost->resample_width  != ist->st->codec->width
1111         || (ost->resample_pix_fmt!= ist->st->codec->pix_fmt) ) {
1112
1113         fprintf(stderr,"Input Stream #%d.%d frame size changed to %dx%d, %s\n", ist->file_index, ist->index, ist->st->codec->width,     ist->st->codec->height,avcodec_get_pix_fmt_name(ist->st->codec->pix_fmt));
1114         if(!ost->video_resample)
1115             ffmpeg_exit(1);
1116     }
1117
1118 #if !CONFIG_AVFILTER
1119     if (ost->video_resample) {
1120         padding_src = NULL;
1121         final_picture = &ost->pict_tmp;
1122         if(  ost->resample_height != ist->st->codec->height
1123           || ost->resample_width  != ist->st->codec->width
1124           || (ost->resample_pix_fmt!= ist->st->codec->pix_fmt) ) {
1125
1126             /* initialize a new scaler context */
1127             sws_freeContext(ost->img_resample_ctx);
1128             sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
1129             ost->img_resample_ctx = sws_getContext(
1130                 ist->st->codec->width,
1131                 ist->st->codec->height,
1132                 ist->st->codec->pix_fmt,
1133                 ost->st->codec->width,
1134                 ost->st->codec->height,
1135                 ost->st->codec->pix_fmt,
1136                 sws_flags, NULL, NULL, NULL);
1137             if (ost->img_resample_ctx == NULL) {
1138                 fprintf(stderr, "Cannot get resampling context\n");
1139                 ffmpeg_exit(1);
1140             }
1141         }
1142         sws_scale(ost->img_resample_ctx, formatted_picture->data, formatted_picture->linesize,
1143               0, ost->resample_height, resampling_dst->data, resampling_dst->linesize);
1144     }
1145 #endif
1146
1147     /* duplicates frame if needed */
1148     for(i=0;i<nb_frames;i++) {
1149         AVPacket pkt;
1150         av_init_packet(&pkt);
1151         pkt.stream_index= ost->index;
1152
1153         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1154             /* raw pictures are written as AVPicture structure to
1155                avoid any copies. We support temorarily the older
1156                method. */
1157             AVFrame* old_frame = enc->coded_frame;
1158             enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
1159             pkt.data= (uint8_t *)final_picture;
1160             pkt.size=  sizeof(AVPicture);
1161             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1162             pkt.flags |= AV_PKT_FLAG_KEY;
1163
1164             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1165             enc->coded_frame = old_frame;
1166         } else {
1167             AVFrame big_picture;
1168
1169             big_picture= *final_picture;
1170             /* better than nothing: use input picture interlaced
1171                settings */
1172             big_picture.interlaced_frame = in_picture->interlaced_frame;
1173             if(avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)){
1174                 if(top_field_first == -1)
1175                     big_picture.top_field_first = in_picture->top_field_first;
1176                 else
1177                     big_picture.top_field_first = top_field_first;
1178             }
1179
1180             /* handles sameq here. This is not correct because it may
1181                not be a global option */
1182             big_picture.quality = same_quality ? ist->st->quality : ost->st->quality;
1183             if(!me_threshold)
1184                 big_picture.pict_type = 0;
1185 //            big_picture.pts = AV_NOPTS_VALUE;
1186             big_picture.pts= ost->sync_opts;
1187 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1188 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1189             if (ost->forced_kf_index < ost->forced_kf_count &&
1190                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1191                 big_picture.pict_type = FF_I_TYPE;
1192                 ost->forced_kf_index++;
1193             }
1194             ret = avcodec_encode_video(enc,
1195                                        bit_buffer, bit_buffer_size,
1196                                        &big_picture);
1197             if (ret < 0) {
1198                 fprintf(stderr, "Video encoding failed\n");
1199                 ffmpeg_exit(1);
1200             }
1201
1202             if(ret>0){
1203                 pkt.data= bit_buffer;
1204                 pkt.size= ret;
1205                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1206                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1207 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1208    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1209    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1210
1211                 if(enc->coded_frame->key_frame)
1212                     pkt.flags |= AV_PKT_FLAG_KEY;
1213                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1214                 *frame_size = ret;
1215                 video_size += ret;
1216                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1217                 //        enc->frame_number-1, ret, enc->pict_type);
1218                 /* if two pass, output log */
1219                 if (ost->logfile && enc->stats_out) {
1220                     fprintf(ost->logfile, "%s", enc->stats_out);
1221                 }
1222             }
1223         }
1224         ost->sync_opts++;
1225         ost->frame_number++;
1226     }
1227 }
1228
1229 static double psnr(double d){
1230     return -10.0*log(d)/log(10.0);
1231 }
1232
1233 static void do_video_stats(AVFormatContext *os, AVOutputStream *ost,
1234                            int frame_size)
1235 {
1236     AVCodecContext *enc;
1237     int frame_number;
1238     double ti1, bitrate, avg_bitrate;
1239
1240     /* this is executed just the first time do_video_stats is called */
1241     if (!vstats_file) {
1242         vstats_file = fopen(vstats_filename, "w");
1243         if (!vstats_file) {
1244             perror("fopen");
1245             ffmpeg_exit(1);
1246         }
1247     }
1248
1249     enc = ost->st->codec;
1250     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1251         frame_number = ost->frame_number;
1252         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1253         if (enc->flags&CODEC_FLAG_PSNR)
1254             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1255
1256         fprintf(vstats_file,"f_size= %6d ", frame_size);
1257         /* compute pts value */
1258         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1259         if (ti1 < 0.01)
1260             ti1 = 0.01;
1261
1262         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1263         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1264         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1265             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1266         fprintf(vstats_file,"type= %c\n", av_get_pict_type_char(enc->coded_frame->pict_type));
1267     }
1268 }
1269
1270 static void print_report(AVFormatContext **output_files,
1271                          AVOutputStream **ost_table, int nb_ostreams,
1272                          int is_last_report)
1273 {
1274     char buf[1024];
1275     AVOutputStream *ost;
1276     AVFormatContext *oc;
1277     int64_t total_size;
1278     AVCodecContext *enc;
1279     int frame_number, vid, i;
1280     double bitrate, ti1, pts;
1281     static int64_t last_time = -1;
1282     static int qp_histogram[52];
1283
1284     if (!is_last_report) {
1285         int64_t cur_time;
1286         /* display the report every 0.5 seconds */
1287         cur_time = av_gettime();
1288         if (last_time == -1) {
1289             last_time = cur_time;
1290             return;
1291         }
1292         if ((cur_time - last_time) < 500000)
1293             return;
1294         last_time = cur_time;
1295     }
1296
1297
1298     oc = output_files[0];
1299
1300     total_size = avio_size(oc->pb);
1301     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1302         total_size= avio_tell(oc->pb);
1303
1304     buf[0] = '\0';
1305     ti1 = 1e10;
1306     vid = 0;
1307     for(i=0;i<nb_ostreams;i++) {
1308         ost = ost_table[i];
1309         enc = ost->st->codec;
1310         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1311             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ",
1312                      !ost->st->stream_copy ?
1313                      enc->coded_frame->quality/(float)FF_QP2LAMBDA : -1);
1314         }
1315         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1316             float t = (av_gettime()-timer_start) / 1000000.0;
1317
1318             frame_number = ost->frame_number;
1319             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1320                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0,
1321                      !ost->st->stream_copy ?
1322                      enc->coded_frame->quality/(float)FF_QP2LAMBDA : -1);
1323             if(is_last_report)
1324                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1325             if(qp_hist){
1326                 int j;
1327                 int qp= lrintf(enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1328                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1329                     qp_histogram[qp]++;
1330                 for(j=0; j<32; j++)
1331                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1332             }
1333             if (enc->flags&CODEC_FLAG_PSNR){
1334                 int j;
1335                 double error, error_sum=0;
1336                 double scale, scale_sum=0;
1337                 char type[3]= {'Y','U','V'};
1338                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1339                 for(j=0; j<3; j++){
1340                     if(is_last_report){
1341                         error= enc->error[j];
1342                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1343                     }else{
1344                         error= enc->coded_frame->error[j];
1345                         scale= enc->width*enc->height*255.0*255.0;
1346                     }
1347                     if(j) scale/=4;
1348                     error_sum += error;
1349                     scale_sum += scale;
1350                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1351                 }
1352                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1353             }
1354             vid = 1;
1355         }
1356         /* compute min output value */
1357         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1358         if ((pts < ti1) && (pts > 0))
1359             ti1 = pts;
1360     }
1361     if (ti1 < 0.01)
1362         ti1 = 0.01;
1363
1364     if (verbose || is_last_report) {
1365         bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1366
1367         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1368             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1369             (double)total_size / 1024, ti1, bitrate);
1370
1371         if (nb_frames_dup || nb_frames_drop)
1372           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1373                   nb_frames_dup, nb_frames_drop);
1374
1375         if (verbose >= 0)
1376             fprintf(stderr, "%s    \r", buf);
1377
1378         fflush(stderr);
1379     }
1380
1381     if (is_last_report && verbose >= 0){
1382         int64_t raw= audio_size + video_size + extra_size;
1383         fprintf(stderr, "\n");
1384         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1385                 video_size/1024.0,
1386                 audio_size/1024.0,
1387                 extra_size/1024.0,
1388                 100.0*(total_size - raw)/raw
1389         );
1390     }
1391 }
1392
1393 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1394 static int output_packet(AVInputStream *ist, int ist_index,
1395                          AVOutputStream **ost_table, int nb_ostreams,
1396                          const AVPacket *pkt)
1397 {
1398     AVFormatContext *os;
1399     AVOutputStream *ost;
1400     int ret, i;
1401     int got_picture;
1402     AVFrame picture;
1403     void *buffer_to_free;
1404     static unsigned int samples_size= 0;
1405     AVSubtitle subtitle, *subtitle_to_free;
1406     int64_t pkt_pts = AV_NOPTS_VALUE;
1407 #if CONFIG_AVFILTER
1408     int frame_available;
1409 #endif
1410
1411     AVPacket avpkt;
1412     int bps = av_get_bits_per_sample_fmt(ist->st->codec->sample_fmt)>>3;
1413
1414     if(ist->next_pts == AV_NOPTS_VALUE)
1415         ist->next_pts= ist->pts;
1416
1417     if (pkt == NULL) {
1418         /* EOF handling */
1419         av_init_packet(&avpkt);
1420         avpkt.data = NULL;
1421         avpkt.size = 0;
1422         goto handle_eof;
1423     } else {
1424         avpkt = *pkt;
1425     }
1426
1427     if(pkt->dts != AV_NOPTS_VALUE)
1428         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1429     if(pkt->pts != AV_NOPTS_VALUE)
1430         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1431
1432     //while we have more to decode or while the decoder did output something on EOF
1433     while (avpkt.size > 0 || (!pkt && ist->next_pts != ist->pts)) {
1434         uint8_t *data_buf, *decoded_data_buf;
1435         int data_size, decoded_data_size;
1436     handle_eof:
1437         ist->pts= ist->next_pts;
1438
1439         if(avpkt.size && avpkt.size != pkt->size &&
1440            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1441             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1442             ist->showed_multi_packet_warning=1;
1443         }
1444
1445         /* decode the packet if needed */
1446         decoded_data_buf = NULL; /* fail safe */
1447         decoded_data_size= 0;
1448         data_buf  = avpkt.data;
1449         data_size = avpkt.size;
1450         subtitle_to_free = NULL;
1451         if (ist->decoding_needed) {
1452             switch(ist->st->codec->codec_type) {
1453             case AVMEDIA_TYPE_AUDIO:{
1454                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1455                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1456                     av_free(samples);
1457                     samples= av_malloc(samples_size);
1458                 }
1459                 decoded_data_size= samples_size;
1460                     /* XXX: could avoid copy if PCM 16 bits with same
1461                        endianness as CPU */
1462                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1463                                             &avpkt);
1464                 if (ret < 0)
1465                     goto fail_decode;
1466                 avpkt.data += ret;
1467                 avpkt.size -= ret;
1468                 data_size   = ret;
1469                 /* Some bug in mpeg audio decoder gives */
1470                 /* decoded_data_size < 0, it seems they are overflows */
1471                 if (decoded_data_size <= 0) {
1472                     /* no audio frame */
1473                     continue;
1474                 }
1475                 decoded_data_buf = (uint8_t *)samples;
1476                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1477                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1478                 break;}
1479             case AVMEDIA_TYPE_VIDEO:
1480                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1481                     /* XXX: allocate picture correctly */
1482                     avcodec_get_frame_defaults(&picture);
1483                     avpkt.pts = pkt_pts;
1484                     avpkt.dts = ist->pts;
1485                     pkt_pts = AV_NOPTS_VALUE;
1486
1487                     ret = avcodec_decode_video2(ist->st->codec,
1488                                                 &picture, &got_picture, &avpkt);
1489                     ist->st->quality= picture.quality;
1490                     if (ret < 0)
1491                         goto fail_decode;
1492                     if (!got_picture) {
1493                         /* no picture yet */
1494                         goto discard_packet;
1495                     }
1496                     ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, picture.pkt_pts, picture.pkt_dts);
1497                     if (ist->st->codec->time_base.num != 0) {
1498                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1499                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1500                                           ist->st->codec->time_base.num * ticks) /
1501                             ist->st->codec->time_base.den;
1502                     }
1503                     avpkt.size = 0;
1504                     break;
1505             case AVMEDIA_TYPE_SUBTITLE:
1506                 ret = avcodec_decode_subtitle2(ist->st->codec,
1507                                                &subtitle, &got_picture, &avpkt);
1508                 if (ret < 0)
1509                     goto fail_decode;
1510                 if (!got_picture) {
1511                     goto discard_packet;
1512                 }
1513                 subtitle_to_free = &subtitle;
1514                 avpkt.size = 0;
1515                 break;
1516             default:
1517                 goto fail_decode;
1518             }
1519         } else {
1520             switch(ist->st->codec->codec_type) {
1521             case AVMEDIA_TYPE_AUDIO:
1522                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1523                     ist->st->codec->sample_rate;
1524                 break;
1525             case AVMEDIA_TYPE_VIDEO:
1526                 if (ist->st->codec->time_base.num != 0) {
1527                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1528                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1529                                       ist->st->codec->time_base.num * ticks) /
1530                         ist->st->codec->time_base.den;
1531                 }
1532                 break;
1533             }
1534             ret = avpkt.size;
1535             avpkt.size = 0;
1536         }
1537
1538         buffer_to_free = NULL;
1539         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1540             pre_process_video_frame(ist, (AVPicture *)&picture,
1541                                     &buffer_to_free);
1542         }
1543
1544 #if CONFIG_AVFILTER
1545         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ist->input_video_filter) {
1546             AVRational sar;
1547             if (ist->st->sample_aspect_ratio.num) sar = ist->st->sample_aspect_ratio;
1548             else                                  sar = ist->st->codec->sample_aspect_ratio;
1549             // add it to be filtered
1550             av_vsrc_buffer_add_frame(ist->input_video_filter, &picture,
1551                                      ist->pts,
1552                                      sar);
1553         }
1554 #endif
1555
1556         // preprocess audio (volume)
1557         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1558             if (audio_volume != 256) {
1559                 short *volp;
1560                 volp = samples;
1561                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1562                     int v = ((*volp) * audio_volume + 128) >> 8;
1563                     if (v < -32768) v = -32768;
1564                     if (v >  32767) v = 32767;
1565                     *volp++ = v;
1566                 }
1567             }
1568         }
1569
1570         /* frame rate emulation */
1571         if (rate_emu) {
1572             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1573             int64_t now = av_gettime() - ist->start;
1574             if (pts > now)
1575                 usleep(pts - now);
1576         }
1577 #if CONFIG_AVFILTER
1578         frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1579             !ist->output_video_filter || avfilter_poll_frame(ist->output_video_filter->inputs[0]);
1580 #endif
1581         /* if output time reached then transcode raw format,
1582            encode packets and output them */
1583         if (start_time == 0 || ist->pts >= start_time)
1584 #if CONFIG_AVFILTER
1585         while (frame_available) {
1586             AVRational ist_pts_tb;
1587             if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ist->output_video_filter)
1588                 get_filtered_video_frame(ist->output_video_filter, &picture, &ist->picref, &ist_pts_tb);
1589             if (ist->picref)
1590                 ist->pts = av_rescale_q(ist->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1591 #endif
1592             for(i=0;i<nb_ostreams;i++) {
1593                 int frame_size;
1594
1595                 ost = ost_table[i];
1596                 if (ost->source_index == ist_index) {
1597                     os = output_files[ost->file_index];
1598
1599                     /* set the input output pts pairs */
1600                     //ost->sync_ipts = (double)(ist->pts + input_files_ts_offset[ist->file_index] - start_time)/ AV_TIME_BASE;
1601
1602                     if (ost->encoding_needed) {
1603                         av_assert0(ist->decoding_needed);
1604                         switch(ost->st->codec->codec_type) {
1605                         case AVMEDIA_TYPE_AUDIO:
1606                             do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1607                             break;
1608                         case AVMEDIA_TYPE_VIDEO:
1609 #if CONFIG_AVFILTER
1610                             if (ist->picref->video)
1611                                 ost->st->codec->sample_aspect_ratio = ist->picref->video->pixel_aspect;
1612 #endif
1613                             do_video_out(os, ost, ist, &picture, &frame_size);
1614                             if (vstats_filename && frame_size)
1615                                 do_video_stats(os, ost, frame_size);
1616                             break;
1617                         case AVMEDIA_TYPE_SUBTITLE:
1618                             do_subtitle_out(os, ost, ist, &subtitle,
1619                                             pkt->pts);
1620                             break;
1621                         default:
1622                             abort();
1623                         }
1624                     } else {
1625                         AVFrame avframe; //FIXME/XXX remove this
1626                         AVPacket opkt;
1627                         int64_t ost_tb_start_time= av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1628
1629                         av_init_packet(&opkt);
1630
1631                         if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1632                             continue;
1633
1634                         /* no reencoding needed : output the packet directly */
1635                         /* force the input stream PTS */
1636
1637                         avcodec_get_frame_defaults(&avframe);
1638                         ost->st->codec->coded_frame= &avframe;
1639                         avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1640
1641                         if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1642                             audio_size += data_size;
1643                         else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1644                             video_size += data_size;
1645                             ost->sync_opts++;
1646                         }
1647
1648                         opkt.stream_index= ost->index;
1649                         if(pkt->pts != AV_NOPTS_VALUE)
1650                             opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1651                         else
1652                             opkt.pts= AV_NOPTS_VALUE;
1653
1654                         if (pkt->dts == AV_NOPTS_VALUE)
1655                             opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1656                         else
1657                             opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1658                         opkt.dts -= ost_tb_start_time;
1659
1660                         opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1661                         opkt.flags= pkt->flags;
1662
1663                         //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1664                         if(   ost->st->codec->codec_id != CODEC_ID_H264
1665                            && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1666                            && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1667                            ) {
1668                             if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1669                                 opkt.destruct= av_destruct_packet;
1670                         } else {
1671                             opkt.data = data_buf;
1672                             opkt.size = data_size;
1673                         }
1674
1675                         write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1676                         ost->st->codec->frame_number++;
1677                         ost->frame_number++;
1678                         av_free_packet(&opkt);
1679                     }
1680                 }
1681             }
1682
1683 #if CONFIG_AVFILTER
1684             frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1685                               ist->output_video_filter && avfilter_poll_frame(ist->output_video_filter->inputs[0]);
1686             if(ist->picref)
1687                 avfilter_unref_buffer(ist->picref);
1688         }
1689 #endif
1690         av_free(buffer_to_free);
1691         /* XXX: allocate the subtitles in the codec ? */
1692         if (subtitle_to_free) {
1693             avsubtitle_free(subtitle_to_free);
1694             subtitle_to_free = NULL;
1695         }
1696     }
1697  discard_packet:
1698     if (pkt == NULL) {
1699         /* EOF handling */
1700
1701         for(i=0;i<nb_ostreams;i++) {
1702             ost = ost_table[i];
1703             if (ost->source_index == ist_index) {
1704                 AVCodecContext *enc= ost->st->codec;
1705                 os = output_files[ost->file_index];
1706
1707                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1708                     continue;
1709                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1710                     continue;
1711
1712                 if (ost->encoding_needed) {
1713                     for(;;) {
1714                         AVPacket pkt;
1715                         int fifo_bytes;
1716                         av_init_packet(&pkt);
1717                         pkt.stream_index= ost->index;
1718
1719                         switch(ost->st->codec->codec_type) {
1720                         case AVMEDIA_TYPE_AUDIO:
1721                             fifo_bytes = av_fifo_size(ost->fifo);
1722                             ret = 0;
1723                             /* encode any samples remaining in fifo */
1724                             if (fifo_bytes > 0) {
1725                                 int osize = av_get_bits_per_sample_fmt(enc->sample_fmt) >> 3;
1726                                 int fs_tmp = enc->frame_size;
1727
1728                                 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1729                                 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1730                                     enc->frame_size = fifo_bytes / (osize * enc->channels);
1731                                 } else { /* pad */
1732                                     int frame_bytes = enc->frame_size*osize*enc->channels;
1733                                     if (allocated_audio_buf_size < frame_bytes)
1734                                         ffmpeg_exit(1);
1735                                     memset(audio_buf+fifo_bytes, 0, frame_bytes - fifo_bytes);
1736                                 }
1737
1738                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1739                                 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1740                                                           ost->st->time_base.num, enc->sample_rate);
1741                                 enc->frame_size = fs_tmp;
1742                             }
1743                             if(ret <= 0) {
1744                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1745                             }
1746                             if (ret < 0) {
1747                                 fprintf(stderr, "Audio encoding failed\n");
1748                                 ffmpeg_exit(1);
1749                             }
1750                             audio_size += ret;
1751                             pkt.flags |= AV_PKT_FLAG_KEY;
1752                             break;
1753                         case AVMEDIA_TYPE_VIDEO:
1754                             ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1755                             if (ret < 0) {
1756                                 fprintf(stderr, "Video encoding failed\n");
1757                                 ffmpeg_exit(1);
1758                             }
1759                             video_size += ret;
1760                             if(enc->coded_frame && enc->coded_frame->key_frame)
1761                                 pkt.flags |= AV_PKT_FLAG_KEY;
1762                             if (ost->logfile && enc->stats_out) {
1763                                 fprintf(ost->logfile, "%s", enc->stats_out);
1764                             }
1765                             break;
1766                         default:
1767                             ret=-1;
1768                         }
1769
1770                         if(ret<=0)
1771                             break;
1772                         pkt.data= bit_buffer;
1773                         pkt.size= ret;
1774                         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1775                             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1776                         write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1777                     }
1778                 }
1779             }
1780         }
1781     }
1782
1783     return 0;
1784  fail_decode:
1785     return -1;
1786 }
1787
1788 static void print_sdp(AVFormatContext **avc, int n)
1789 {
1790     char sdp[2048];
1791
1792     avf_sdp_create(avc, n, sdp, sizeof(sdp));
1793     printf("SDP:\n%s\n", sdp);
1794     fflush(stdout);
1795 }
1796
1797 static int copy_chapters(int infile, int outfile)
1798 {
1799     AVFormatContext *is = input_files[infile];
1800     AVFormatContext *os = output_files[outfile];
1801     int i;
1802
1803     for (i = 0; i < is->nb_chapters; i++) {
1804         AVChapter *in_ch = is->chapters[i], *out_ch;
1805         int64_t ts_off   = av_rescale_q(start_time - input_files_ts_offset[infile],
1806                                       AV_TIME_BASE_Q, in_ch->time_base);
1807         int64_t rt       = (recording_time == INT64_MAX) ? INT64_MAX :
1808                            av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
1809
1810
1811         if (in_ch->end < ts_off)
1812             continue;
1813         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
1814             break;
1815
1816         out_ch = av_mallocz(sizeof(AVChapter));
1817         if (!out_ch)
1818             return AVERROR(ENOMEM);
1819
1820         out_ch->id        = in_ch->id;
1821         out_ch->time_base = in_ch->time_base;
1822         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
1823         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
1824
1825         if (metadata_chapters_autocopy)
1826             av_metadata_copy(&out_ch->metadata, in_ch->metadata, 0);
1827
1828         os->nb_chapters++;
1829         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
1830         if (!os->chapters)
1831             return AVERROR(ENOMEM);
1832         os->chapters[os->nb_chapters - 1] = out_ch;
1833     }
1834     return 0;
1835 }
1836
1837 static void parse_forced_key_frames(char *kf, AVOutputStream *ost,
1838                                     AVCodecContext *avctx)
1839 {
1840     char *p;
1841     int n = 1, i;
1842     int64_t t;
1843
1844     for (p = kf; *p; p++)
1845         if (*p == ',')
1846             n++;
1847     ost->forced_kf_count = n;
1848     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1849     if (!ost->forced_kf_pts) {
1850         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1851         ffmpeg_exit(1);
1852     }
1853     for (i = 0; i < n; i++) {
1854         p = i ? strchr(p, ',') + 1 : kf;
1855         t = parse_time_or_die("force_key_frames", p, 1);
1856         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1857     }
1858 }
1859
1860 /*
1861  * The following code is the main loop of the file converter
1862  */
1863 static int transcode(AVFormatContext **output_files,
1864                      int nb_output_files,
1865                      AVFormatContext **input_files,
1866                      int nb_input_files,
1867                      AVStreamMap *stream_maps, int nb_stream_maps)
1868 {
1869     int ret = 0, i, j, k, n, nb_istreams = 0, nb_ostreams = 0;
1870     AVFormatContext *is, *os;
1871     AVCodecContext *codec, *icodec;
1872     AVOutputStream *ost, **ost_table = NULL;
1873     AVInputStream *ist, **ist_table = NULL;
1874     AVInputFile *file_table;
1875     char error[1024];
1876     int key;
1877     int want_sdp = 1;
1878     uint8_t no_packet[MAX_FILES]={0};
1879     int no_packet_count=0;
1880
1881     file_table= av_mallocz(nb_input_files * sizeof(AVInputFile));
1882     if (!file_table)
1883         goto fail;
1884
1885     /* input stream init */
1886     j = 0;
1887     for(i=0;i<nb_input_files;i++) {
1888         is = input_files[i];
1889         file_table[i].ist_index = j;
1890         file_table[i].nb_streams = is->nb_streams;
1891         j += is->nb_streams;
1892     }
1893     nb_istreams = j;
1894
1895     ist_table = av_mallocz(nb_istreams * sizeof(AVInputStream *));
1896     if (!ist_table)
1897         goto fail;
1898
1899     for(i=0;i<nb_istreams;i++) {
1900         ist = av_mallocz(sizeof(AVInputStream));
1901         if (!ist)
1902             goto fail;
1903         ist_table[i] = ist;
1904     }
1905     j = 0;
1906     for(i=0;i<nb_input_files;i++) {
1907         is = input_files[i];
1908         for(k=0;k<is->nb_streams;k++) {
1909             ist = ist_table[j++];
1910             ist->st = is->streams[k];
1911             ist->file_index = i;
1912             ist->index = k;
1913             ist->discard = 1; /* the stream is discarded by default
1914                                  (changed later) */
1915
1916             if (rate_emu) {
1917                 ist->start = av_gettime();
1918             }
1919         }
1920     }
1921
1922     /* output stream init */
1923     nb_ostreams = 0;
1924     for(i=0;i<nb_output_files;i++) {
1925         os = output_files[i];
1926         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1927             av_dump_format(output_files[i], i, output_files[i]->filename, 1);
1928             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
1929             ret = AVERROR(EINVAL);
1930             goto fail;
1931         }
1932         nb_ostreams += os->nb_streams;
1933     }
1934     if (nb_stream_maps > 0 && nb_stream_maps != nb_ostreams) {
1935         fprintf(stderr, "Number of stream maps must match number of output streams\n");
1936         ret = AVERROR(EINVAL);
1937         goto fail;
1938     }
1939
1940     /* Sanity check the mapping args -- do the input files & streams exist? */
1941     for(i=0;i<nb_stream_maps;i++) {
1942         int fi = stream_maps[i].file_index;
1943         int si = stream_maps[i].stream_index;
1944
1945         if (fi < 0 || fi > nb_input_files - 1 ||
1946             si < 0 || si > file_table[fi].nb_streams - 1) {
1947             fprintf(stderr,"Could not find input stream #%d.%d\n", fi, si);
1948             ret = AVERROR(EINVAL);
1949             goto fail;
1950         }
1951         fi = stream_maps[i].sync_file_index;
1952         si = stream_maps[i].sync_stream_index;
1953         if (fi < 0 || fi > nb_input_files - 1 ||
1954             si < 0 || si > file_table[fi].nb_streams - 1) {
1955             fprintf(stderr,"Could not find sync stream #%d.%d\n", fi, si);
1956             ret = AVERROR(EINVAL);
1957             goto fail;
1958         }
1959     }
1960
1961     ost_table = av_mallocz(sizeof(AVOutputStream *) * nb_ostreams);
1962     if (!ost_table)
1963         goto fail;
1964     n = 0;
1965     for(k=0;k<nb_output_files;k++) {
1966         os = output_files[k];
1967         for(i=0;i<os->nb_streams;i++,n++) {
1968             int found;
1969             ost = ost_table[n] = output_streams_for_file[k][i];
1970             ost->st = os->streams[i];
1971             if (nb_stream_maps > 0) {
1972                 ost->source_index = file_table[stream_maps[n].file_index].ist_index +
1973                     stream_maps[n].stream_index;
1974
1975                 /* Sanity check that the stream types match */
1976                 if (ist_table[ost->source_index]->st->codec->codec_type != ost->st->codec->codec_type) {
1977                     int i= ost->file_index;
1978                     av_dump_format(output_files[i], i, output_files[i]->filename, 1);
1979                     fprintf(stderr, "Codec type mismatch for mapping #%d.%d -> #%d.%d\n",
1980                         stream_maps[n].file_index, stream_maps[n].stream_index,
1981                         ost->file_index, ost->index);
1982                     ffmpeg_exit(1);
1983                 }
1984
1985             } else {
1986                 int best_nb_frames=-1;
1987                 /* get corresponding input stream index : we select the first one with the right type */
1988                 found = 0;
1989                 for(j=0;j<nb_istreams;j++) {
1990                     int skip=0;
1991                     ist = ist_table[j];
1992                     if(opt_programid){
1993                         int pi,si;
1994                         AVFormatContext *f= input_files[ ist->file_index ];
1995                         skip=1;
1996                         for(pi=0; pi<f->nb_programs; pi++){
1997                             AVProgram *p= f->programs[pi];
1998                             if(p->id == opt_programid)
1999                                 for(si=0; si<p->nb_stream_indexes; si++){
2000                                     if(f->streams[ p->stream_index[si] ] == ist->st)
2001                                         skip=0;
2002                                 }
2003                         }
2004                     }
2005                     if (ist->discard && ist->st->discard != AVDISCARD_ALL && !skip &&
2006                         ist->st->codec->codec_type == ost->st->codec->codec_type) {
2007                         if(best_nb_frames < ist->st->codec_info_nb_frames){
2008                             best_nb_frames= ist->st->codec_info_nb_frames;
2009                             ost->source_index = j;
2010                             found = 1;
2011                         }
2012                     }
2013                 }
2014
2015                 if (!found) {
2016                     if(! opt_programid) {
2017                         /* try again and reuse existing stream */
2018                         for(j=0;j<nb_istreams;j++) {
2019                             ist = ist_table[j];
2020                             if (   ist->st->codec->codec_type == ost->st->codec->codec_type
2021                                 && ist->st->discard != AVDISCARD_ALL) {
2022                                 ost->source_index = j;
2023                                 found = 1;
2024                             }
2025                         }
2026                     }
2027                     if (!found) {
2028                         int i= ost->file_index;
2029                         av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2030                         fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",
2031                                 ost->file_index, ost->index);
2032                         ffmpeg_exit(1);
2033                     }
2034                 }
2035             }
2036             ist = ist_table[ost->source_index];
2037             ist->discard = 0;
2038             ost->sync_ist = (nb_stream_maps > 0) ?
2039                 ist_table[file_table[stream_maps[n].sync_file_index].ist_index +
2040                          stream_maps[n].sync_stream_index] : ist;
2041         }
2042     }
2043
2044     /* for each output stream, we compute the right encoding parameters */
2045     for(i=0;i<nb_ostreams;i++) {
2046         ost = ost_table[i];
2047         os = output_files[ost->file_index];
2048         ist = ist_table[ost->source_index];
2049
2050         codec = ost->st->codec;
2051         icodec = ist->st->codec;
2052
2053         if (metadata_streams_autocopy)
2054             av_metadata_copy(&ost->st->metadata, ist->st->metadata,
2055                              AV_METADATA_DONT_OVERWRITE);
2056
2057         ost->st->disposition = ist->st->disposition;
2058         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2059         codec->chroma_sample_location = icodec->chroma_sample_location;
2060
2061         if (ost->st->stream_copy) {
2062             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2063
2064             if (extra_size > INT_MAX)
2065                 goto fail;
2066
2067             /* if stream_copy is selected, no need to decode or encode */
2068             codec->codec_id = icodec->codec_id;
2069             codec->codec_type = icodec->codec_type;
2070
2071             if(!codec->codec_tag){
2072                 if(   !os->oformat->codec_tag
2073                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2074                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2075                     codec->codec_tag = icodec->codec_tag;
2076             }
2077
2078             codec->bit_rate = icodec->bit_rate;
2079             codec->rc_max_rate    = icodec->rc_max_rate;
2080             codec->rc_buffer_size = icodec->rc_buffer_size;
2081             codec->extradata= av_mallocz(extra_size);
2082             if (!codec->extradata)
2083                 goto fail;
2084             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2085             codec->extradata_size= icodec->extradata_size;
2086             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){
2087                 codec->time_base = icodec->time_base;
2088                 codec->time_base.num *= icodec->ticks_per_frame;
2089                 av_reduce(&codec->time_base.num, &codec->time_base.den,
2090                           codec->time_base.num, codec->time_base.den, INT_MAX);
2091             }else
2092                 codec->time_base = ist->st->time_base;
2093             switch(codec->codec_type) {
2094             case AVMEDIA_TYPE_AUDIO:
2095                 if(audio_volume != 256) {
2096                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2097                     ffmpeg_exit(1);
2098                 }
2099                 codec->channel_layout = icodec->channel_layout;
2100                 codec->sample_rate = icodec->sample_rate;
2101                 codec->channels = icodec->channels;
2102                 codec->frame_size = icodec->frame_size;
2103                 codec->audio_service_type = icodec->audio_service_type;
2104                 codec->block_align= icodec->block_align;
2105                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2106                     codec->block_align= 0;
2107                 if(codec->codec_id == CODEC_ID_AC3)
2108                     codec->block_align= 0;
2109                 break;
2110             case AVMEDIA_TYPE_VIDEO:
2111                 codec->pix_fmt = icodec->pix_fmt;
2112                 codec->width = icodec->width;
2113                 codec->height = icodec->height;
2114                 codec->has_b_frames = icodec->has_b_frames;
2115                 break;
2116             case AVMEDIA_TYPE_SUBTITLE:
2117                 codec->width = icodec->width;
2118                 codec->height = icodec->height;
2119                 break;
2120             default:
2121                 abort();
2122             }
2123         } else {
2124             switch(codec->codec_type) {
2125             case AVMEDIA_TYPE_AUDIO:
2126                 ost->fifo= av_fifo_alloc(1024);
2127                 if(!ost->fifo)
2128                     goto fail;
2129                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2130                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2131                 icodec->request_channels = codec->channels;
2132                 ist->decoding_needed = 1;
2133                 ost->encoding_needed = 1;
2134                 ost->resample_sample_fmt  = icodec->sample_fmt;
2135                 ost->resample_sample_rate = icodec->sample_rate;
2136                 ost->resample_channels    = icodec->channels;
2137                 break;
2138             case AVMEDIA_TYPE_VIDEO:
2139                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2140                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2141                     ffmpeg_exit(1);
2142                 }
2143                 ost->video_resample = (codec->width != icodec->width   ||
2144                                        codec->height != icodec->height ||
2145                         (codec->pix_fmt != icodec->pix_fmt));
2146                 if (ost->video_resample) {
2147 #if !CONFIG_AVFILTER
2148                     avcodec_get_frame_defaults(&ost->pict_tmp);
2149                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2150                                          codec->width, codec->height)) {
2151                         fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
2152                         ffmpeg_exit(1);
2153                     }
2154                     sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
2155                     ost->img_resample_ctx = sws_getContext(
2156                         icodec->width,
2157                         icodec->height,
2158                             icodec->pix_fmt,
2159                             codec->width,
2160                             codec->height,
2161                             codec->pix_fmt,
2162                             sws_flags, NULL, NULL, NULL);
2163                     if (ost->img_resample_ctx == NULL) {
2164                         fprintf(stderr, "Cannot get resampling context\n");
2165                         ffmpeg_exit(1);
2166                     }
2167
2168                     ost->original_height = icodec->height;
2169                     ost->original_width  = icodec->width;
2170 #endif
2171                     codec->bits_per_raw_sample= 0;
2172                 }
2173                 ost->resample_height = icodec->height;
2174                 ost->resample_width  = icodec->width;
2175                 ost->resample_pix_fmt= icodec->pix_fmt;
2176                 ost->encoding_needed = 1;
2177                 ist->decoding_needed = 1;
2178
2179 #if CONFIG_AVFILTER
2180                 if (configure_filters(ist, ost)) {
2181                     fprintf(stderr, "Error opening filters!\n");
2182                     exit(1);
2183                 }
2184 #endif
2185                 break;
2186             case AVMEDIA_TYPE_SUBTITLE:
2187                 ost->encoding_needed = 1;
2188                 ist->decoding_needed = 1;
2189                 break;
2190             default:
2191                 abort();
2192                 break;
2193             }
2194             /* two pass mode */
2195             if (ost->encoding_needed &&
2196                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2197                 char logfilename[1024];
2198                 FILE *f;
2199
2200                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2201                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2202                          i);
2203                 if (codec->flags & CODEC_FLAG_PASS1) {
2204                     f = fopen(logfilename, "wb");
2205                     if (!f) {
2206                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2207                         ffmpeg_exit(1);
2208                     }
2209                     ost->logfile = f;
2210                 } else {
2211                     char  *logbuffer;
2212                     size_t logbuffer_size;
2213                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2214                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2215                         ffmpeg_exit(1);
2216                     }
2217                     codec->stats_in = logbuffer;
2218                 }
2219             }
2220         }
2221         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2222             int size= codec->width * codec->height;
2223             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2224         }
2225     }
2226
2227     if (!bit_buffer)
2228         bit_buffer = av_malloc(bit_buffer_size);
2229     if (!bit_buffer) {
2230         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2231                 bit_buffer_size);
2232         ret = AVERROR(ENOMEM);
2233         goto fail;
2234     }
2235
2236     /* open each encoder */
2237     for(i=0;i<nb_ostreams;i++) {
2238         ost = ost_table[i];
2239         if (ost->encoding_needed) {
2240             AVCodec *codec = i < nb_output_codecs ? output_codecs[i] : NULL;
2241             AVCodecContext *dec = ist_table[ost->source_index]->st->codec;
2242             if (!codec)
2243                 codec = avcodec_find_encoder(ost->st->codec->codec_id);
2244             if (!codec) {
2245                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2246                          ost->st->codec->codec_id, ost->file_index, ost->index);
2247                 ret = AVERROR(EINVAL);
2248                 goto dump_format;
2249             }
2250             if (dec->subtitle_header) {
2251                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2252                 if (!ost->st->codec->subtitle_header) {
2253                     ret = AVERROR(ENOMEM);
2254                     goto dump_format;
2255                 }
2256                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2257                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2258             }
2259             if (avcodec_open(ost->st->codec, codec) < 0) {
2260                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2261                         ost->file_index, ost->index);
2262                 ret = AVERROR(EINVAL);
2263                 goto dump_format;
2264             }
2265             extra_size += ost->st->codec->extradata_size;
2266         }
2267     }
2268
2269     /* open each decoder */
2270     for(i=0;i<nb_istreams;i++) {
2271         ist = ist_table[i];
2272         if (ist->decoding_needed) {
2273             AVCodec *codec = i < nb_input_codecs ? input_codecs[i] : NULL;
2274             if (!codec)
2275                 codec = avcodec_find_decoder(ist->st->codec->codec_id);
2276             if (!codec) {
2277                 snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
2278                         ist->st->codec->codec_id, ist->file_index, ist->index);
2279                 ret = AVERROR(EINVAL);
2280                 goto dump_format;
2281             }
2282             if (avcodec_open(ist->st->codec, codec) < 0) {
2283                 snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
2284                         ist->file_index, ist->index);
2285                 ret = AVERROR(EINVAL);
2286                 goto dump_format;
2287             }
2288             //if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2289             //    ist->st->codec->flags |= CODEC_FLAG_REPEAT_FIELD;
2290         }
2291     }
2292
2293     /* init pts */
2294     for(i=0;i<nb_istreams;i++) {
2295         AVStream *st;
2296         ist = ist_table[i];
2297         st= ist->st;
2298         ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
2299         ist->next_pts = AV_NOPTS_VALUE;
2300         init_pts_correction(&ist->pts_ctx);
2301         ist->is_start = 1;
2302     }
2303
2304     /* set meta data information from input file if required */
2305     for (i=0;i<nb_meta_data_maps;i++) {
2306         AVFormatContext *files[2];
2307         AVMetadata      **meta[2];
2308         int j;
2309
2310 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
2311         if ((index) < 0 || (index) >= (nb_elems)) {\
2312             snprintf(error, sizeof(error), "Invalid %s index %d while processing metadata maps\n",\
2313                      (desc), (index));\
2314             ret = AVERROR(EINVAL);\
2315             goto dump_format;\
2316         }
2317
2318         int out_file_index = meta_data_maps[i][0].file;
2319         int in_file_index = meta_data_maps[i][1].file;
2320         if (in_file_index < 0 || out_file_index < 0)
2321             continue;
2322         METADATA_CHECK_INDEX(out_file_index, nb_output_files, "output file")
2323         METADATA_CHECK_INDEX(in_file_index, nb_input_files, "input file")
2324
2325         files[0] = output_files[out_file_index];
2326         files[1] = input_files[in_file_index];
2327
2328         for (j = 0; j < 2; j++) {
2329             AVMetaDataMap *map = &meta_data_maps[i][j];
2330
2331             switch (map->type) {
2332             case 'g':
2333                 meta[j] = &files[j]->metadata;
2334                 break;
2335             case 's':
2336                 METADATA_CHECK_INDEX(map->index, files[j]->nb_streams, "stream")
2337                 meta[j] = &files[j]->streams[map->index]->metadata;
2338                 break;
2339             case 'c':
2340                 METADATA_CHECK_INDEX(map->index, files[j]->nb_chapters, "chapter")
2341                 meta[j] = &files[j]->chapters[map->index]->metadata;
2342                 break;
2343             case 'p':
2344                 METADATA_CHECK_INDEX(map->index, files[j]->nb_programs, "program")
2345                 meta[j] = &files[j]->programs[map->index]->metadata;
2346                 break;
2347             }
2348         }
2349
2350         av_metadata_copy(meta[0], *meta[1], AV_METADATA_DONT_OVERWRITE);
2351     }
2352
2353     /* copy global metadata by default */
2354     if (metadata_global_autocopy) {
2355
2356         for (i = 0; i < nb_output_files; i++)
2357             av_metadata_copy(&output_files[i]->metadata, input_files[0]->metadata,
2358                              AV_METADATA_DONT_OVERWRITE);
2359     }
2360
2361     /* copy chapters according to chapter maps */
2362     for (i = 0; i < nb_chapter_maps; i++) {
2363         int infile  = chapter_maps[i].in_file;
2364         int outfile = chapter_maps[i].out_file;
2365
2366         if (infile < 0 || outfile < 0)
2367             continue;
2368         if (infile >= nb_input_files) {
2369             snprintf(error, sizeof(error), "Invalid input file index %d in chapter mapping.\n", infile);
2370             ret = AVERROR(EINVAL);
2371             goto dump_format;
2372         }
2373         if (outfile >= nb_output_files) {
2374             snprintf(error, sizeof(error), "Invalid output file index %d in chapter mapping.\n",outfile);
2375             ret = AVERROR(EINVAL);
2376             goto dump_format;
2377         }
2378         copy_chapters(infile, outfile);
2379     }
2380
2381     /* copy chapters from the first input file that has them*/
2382     if (!nb_chapter_maps)
2383         for (i = 0; i < nb_input_files; i++) {
2384             if (!input_files[i]->nb_chapters)
2385                 continue;
2386
2387             for (j = 0; j < nb_output_files; j++)
2388                 if ((ret = copy_chapters(i, j)) < 0)
2389                     goto dump_format;
2390             break;
2391         }
2392
2393     /* open files and write file headers */
2394     for(i=0;i<nb_output_files;i++) {
2395         os = output_files[i];
2396         if (av_write_header(os) < 0) {
2397             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2398             ret = AVERROR(EINVAL);
2399             goto dump_format;
2400         }
2401         if (strcmp(output_files[i]->oformat->name, "rtp")) {
2402             want_sdp = 0;
2403         }
2404     }
2405
2406  dump_format:
2407     /* dump the file output parameters - cannot be done before in case
2408        of stream copy */
2409     for(i=0;i<nb_output_files;i++) {
2410         av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2411     }
2412
2413     /* dump the stream mapping */
2414     if (verbose >= 0) {
2415         fprintf(stderr, "Stream mapping:\n");
2416         for(i=0;i<nb_ostreams;i++) {
2417             ost = ost_table[i];
2418             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2419                     ist_table[ost->source_index]->file_index,
2420                     ist_table[ost->source_index]->index,
2421                     ost->file_index,
2422                     ost->index);
2423             if (ost->sync_ist != ist_table[ost->source_index])
2424                 fprintf(stderr, " [sync #%d.%d]",
2425                         ost->sync_ist->file_index,
2426                         ost->sync_ist->index);
2427             fprintf(stderr, "\n");
2428         }
2429     }
2430
2431     if (ret) {
2432         fprintf(stderr, "%s\n", error);
2433         goto fail;
2434     }
2435
2436     if (want_sdp) {
2437         print_sdp(output_files, nb_output_files);
2438     }
2439
2440     if (!using_stdin && verbose >= 0) {
2441 #if HAVE_KBHIT
2442         fprintf(stderr, "Press [q] to stop encoding\n");
2443 #else
2444         fprintf(stderr, "Press ctrl-c to stop encoding\n");
2445 #endif
2446         url_set_interrupt_cb(decode_interrupt_cb);
2447     }
2448     term_init();
2449
2450     timer_start = av_gettime();
2451
2452     for(; received_sigterm == 0;) {
2453         int file_index, ist_index;
2454         AVPacket pkt;
2455         double ipts_min;
2456         double opts_min;
2457
2458     redo:
2459         ipts_min= 1e100;
2460         opts_min= 1e100;
2461         /* if 'q' pressed, exits */
2462         if (!using_stdin) {
2463             if (q_pressed)
2464                 break;
2465             /* read_key() returns 0 on EOF */
2466             key = read_key();
2467             if (key == 'q')
2468                 break;
2469         }
2470
2471         /* select the stream that we must read now by looking at the
2472            smallest output pts */
2473         file_index = -1;
2474         for(i=0;i<nb_ostreams;i++) {
2475             double ipts, opts;
2476             ost = ost_table[i];
2477             os = output_files[ost->file_index];
2478             ist = ist_table[ost->source_index];
2479             if(ist->is_past_recording_time || no_packet[ist->file_index])
2480                 continue;
2481                 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2482             ipts = (double)ist->pts;
2483             if (!file_table[ist->file_index].eof_reached){
2484                 if(ipts < ipts_min) {
2485                     ipts_min = ipts;
2486                     if(input_sync ) file_index = ist->file_index;
2487                 }
2488                 if(opts < opts_min) {
2489                     opts_min = opts;
2490                     if(!input_sync) file_index = ist->file_index;
2491                 }
2492             }
2493             if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
2494                 file_index= -1;
2495                 break;
2496             }
2497         }
2498         /* if none, if is finished */
2499         if (file_index < 0) {
2500             if(no_packet_count){
2501                 no_packet_count=0;
2502                 memset(no_packet, 0, sizeof(no_packet));
2503                 usleep(10000);
2504                 continue;
2505             }
2506             break;
2507         }
2508
2509         /* finish if limit size exhausted */
2510         if (limit_filesize != 0 && limit_filesize <= avio_tell(output_files[0]->pb))
2511             break;
2512
2513         /* read a frame from it and output it in the fifo */
2514         is = input_files[file_index];
2515         ret= av_read_frame(is, &pkt);
2516         if(ret == AVERROR(EAGAIN)){
2517             no_packet[file_index]=1;
2518             no_packet_count++;
2519             continue;
2520         }
2521         if (ret < 0) {
2522             file_table[file_index].eof_reached = 1;
2523             if (opt_shortest)
2524                 break;
2525             else
2526                 continue;
2527         }
2528
2529         no_packet_count=0;
2530         memset(no_packet, 0, sizeof(no_packet));
2531
2532         if (do_pkt_dump) {
2533             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2534                              is->streams[pkt.stream_index]);
2535         }
2536         /* the following test is needed in case new streams appear
2537            dynamically in stream : we ignore them */
2538         if (pkt.stream_index >= file_table[file_index].nb_streams)
2539             goto discard_packet;
2540         ist_index = file_table[file_index].ist_index + pkt.stream_index;
2541         ist = ist_table[ist_index];
2542         if (ist->discard)
2543             goto discard_packet;
2544
2545         if (pkt.dts != AV_NOPTS_VALUE)
2546             pkt.dts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2547         if (pkt.pts != AV_NOPTS_VALUE)
2548             pkt.pts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2549
2550         if (pkt.stream_index < nb_input_files_ts_scale[file_index]
2551             && input_files_ts_scale[file_index][pkt.stream_index]){
2552             if(pkt.pts != AV_NOPTS_VALUE)
2553                 pkt.pts *= input_files_ts_scale[file_index][pkt.stream_index];
2554             if(pkt.dts != AV_NOPTS_VALUE)
2555                 pkt.dts *= input_files_ts_scale[file_index][pkt.stream_index];
2556         }
2557
2558 //        fprintf(stderr, "next:%"PRId64" dts:%"PRId64" off:%"PRId64" %d\n", ist->next_pts, pkt.dts, input_files_ts_offset[ist->file_index], ist->st->codec->codec_type);
2559         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2560             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2561             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2562             int64_t delta= pkt_dts - ist->next_pts;
2563             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2564                 input_files_ts_offset[ist->file_index]-= delta;
2565                 if (verbose > 2)
2566                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n", delta, input_files_ts_offset[ist->file_index]);
2567                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2568                 if(pkt.pts != AV_NOPTS_VALUE)
2569                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2570             }
2571         }
2572
2573         /* finish if recording time exhausted */
2574         if (recording_time != INT64_MAX &&
2575             av_compare_ts(pkt.pts, ist->st->time_base, recording_time + start_time, (AVRational){1, 1000000}) >= 0) {
2576             ist->is_past_recording_time = 1;
2577             goto discard_packet;
2578         }
2579
2580         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->index, pkt.size);
2581         if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
2582
2583             if (verbose >= 0)
2584                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2585                         ist->file_index, ist->index);
2586             if (exit_on_error)
2587                 ffmpeg_exit(1);
2588             av_free_packet(&pkt);
2589             goto redo;
2590         }
2591
2592     discard_packet:
2593         av_free_packet(&pkt);
2594
2595         /* dump report by using the output first video and audio streams */
2596         print_report(output_files, ost_table, nb_ostreams, 0);
2597     }
2598
2599     /* at the end of stream, we must flush the decoder buffers */
2600     for(i=0;i<nb_istreams;i++) {
2601         ist = ist_table[i];
2602         if (ist->decoding_needed) {
2603             output_packet(ist, i, ost_table, nb_ostreams, NULL);
2604         }
2605     }
2606
2607     term_exit();
2608
2609     /* write the trailer if needed and close file */
2610     for(i=0;i<nb_output_files;i++) {
2611         os = output_files[i];
2612         av_write_trailer(os);
2613     }
2614
2615     /* dump report by using the first video and audio streams */
2616     print_report(output_files, ost_table, nb_ostreams, 1);
2617
2618     /* close each encoder */
2619     for(i=0;i<nb_ostreams;i++) {
2620         ost = ost_table[i];
2621         if (ost->encoding_needed) {
2622             av_freep(&ost->st->codec->stats_in);
2623             avcodec_close(ost->st->codec);
2624         }
2625     }
2626
2627     /* close each decoder */
2628     for(i=0;i<nb_istreams;i++) {
2629         ist = ist_table[i];
2630         if (ist->decoding_needed) {
2631             avcodec_close(ist->st->codec);
2632         }
2633     }
2634 #if CONFIG_AVFILTER
2635     avfilter_graph_free(&graph);
2636 #endif
2637
2638     /* finished ! */
2639     ret = 0;
2640
2641  fail:
2642     av_freep(&bit_buffer);
2643     av_free(file_table);
2644
2645     if (ist_table) {
2646         for(i=0;i<nb_istreams;i++) {
2647             ist = ist_table[i];
2648             av_free(ist);
2649         }
2650         av_free(ist_table);
2651     }
2652     if (ost_table) {
2653         for(i=0;i<nb_ostreams;i++) {
2654             ost = ost_table[i];
2655             if (ost) {
2656                 if (ost->st->stream_copy)
2657                     av_freep(&ost->st->codec->extradata);
2658                 if (ost->logfile) {
2659                     fclose(ost->logfile);
2660                     ost->logfile = NULL;
2661                 }
2662                 av_fifo_free(ost->fifo); /* works even if fifo is not
2663                                              initialized but set to zero */
2664                 av_freep(&ost->st->codec->subtitle_header);
2665                 av_free(ost->pict_tmp.data[0]);
2666                 av_free(ost->forced_kf_pts);
2667                 if (ost->video_resample)
2668                     sws_freeContext(ost->img_resample_ctx);
2669                 if (ost->resample)
2670                     audio_resample_close(ost->resample);
2671                 if (ost->reformat_ctx)
2672                     av_audio_convert_free(ost->reformat_ctx);
2673                 av_free(ost);
2674             }
2675         }
2676         av_free(ost_table);
2677     }
2678     return ret;
2679 }
2680
2681 static void opt_format(const char *arg)
2682 {
2683     last_asked_format = arg;
2684 }
2685
2686 static void opt_video_rc_override_string(const char *arg)
2687 {
2688     video_rc_override_string = arg;
2689 }
2690
2691 static int opt_me_threshold(const char *opt, const char *arg)
2692 {
2693     me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2694     return 0;
2695 }
2696
2697 static int opt_verbose(const char *opt, const char *arg)
2698 {
2699     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2700     return 0;
2701 }
2702
2703 static int opt_frame_rate(const char *opt, const char *arg)
2704 {
2705     if (av_parse_video_rate(&frame_rate, arg) < 0) {
2706         fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2707         ffmpeg_exit(1);
2708     }
2709     return 0;
2710 }
2711
2712 static int opt_bitrate(const char *opt, const char *arg)
2713 {
2714     int codec_type = opt[0]=='a' ? AVMEDIA_TYPE_AUDIO : AVMEDIA_TYPE_VIDEO;
2715
2716     opt_default(opt, arg);
2717
2718     if (av_get_int(avcodec_opts[codec_type], "b", NULL) < 1000)
2719         fprintf(stderr, "WARNING: The bitrate parameter is set too low. It takes bits/s as argument, not kbits/s\n");
2720
2721     return 0;
2722 }
2723
2724 static int opt_frame_crop(const char *opt, const char *arg)
2725 {
2726     fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
2727     return AVERROR(EINVAL);
2728 }
2729
2730 static void opt_frame_size(const char *arg)
2731 {
2732     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2733         fprintf(stderr, "Incorrect frame size\n");
2734         ffmpeg_exit(1);
2735     }
2736 }
2737
2738 static int opt_pad(const char *opt, const char *arg) {
2739     fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2740     return -1;
2741 }
2742
2743 static void opt_frame_pix_fmt(const char *arg)
2744 {
2745     if (strcmp(arg, "list")) {
2746         frame_pix_fmt = av_get_pix_fmt(arg);
2747         if (frame_pix_fmt == PIX_FMT_NONE) {
2748             fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2749             ffmpeg_exit(1);
2750         }
2751     } else {
2752         show_pix_fmts();
2753         ffmpeg_exit(0);
2754     }
2755 }
2756
2757 static void opt_frame_aspect_ratio(const char *arg)
2758 {
2759     int x = 0, y = 0;
2760     double ar = 0;
2761     const char *p;
2762     char *end;
2763
2764     p = strchr(arg, ':');
2765     if (p) {
2766         x = strtol(arg, &end, 10);
2767         if (end == p)
2768             y = strtol(end+1, &end, 10);
2769         if (x > 0 && y > 0)
2770             ar = (double)x / (double)y;
2771     } else
2772         ar = strtod(arg, NULL);
2773
2774     if (!ar) {
2775         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2776         ffmpeg_exit(1);
2777     }
2778     frame_aspect_ratio = ar;
2779 }
2780
2781 static int opt_metadata(const char *opt, const char *arg)
2782 {
2783     char *mid= strchr(arg, '=');
2784
2785     if(!mid){
2786         fprintf(stderr, "Missing =\n");
2787         ffmpeg_exit(1);
2788     }
2789     *mid++= 0;
2790
2791     av_metadata_set2(&metadata, arg, mid, 0);
2792
2793     return 0;
2794 }
2795
2796 static void opt_qscale(const char *arg)
2797 {
2798     video_qscale = atof(arg);
2799     if (video_qscale <= 0 ||
2800         video_qscale > 255) {
2801         fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2802         ffmpeg_exit(1);
2803     }
2804 }
2805
2806 static void opt_top_field_first(const char *arg)
2807 {
2808     top_field_first= atoi(arg);
2809 }
2810
2811 static int opt_thread_count(const char *opt, const char *arg)
2812 {
2813     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2814 #if !HAVE_THREADS
2815     if (verbose >= 0)
2816         fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2817 #endif
2818     return 0;
2819 }
2820
2821 static void opt_audio_sample_fmt(const char *arg)
2822 {
2823     if (strcmp(arg, "list")) {
2824         audio_sample_fmt = av_get_sample_fmt(arg);
2825         if (audio_sample_fmt == AV_SAMPLE_FMT_NONE) {
2826             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg);
2827             ffmpeg_exit(1);
2828         }
2829     } else {
2830         list_fmts(av_get_sample_fmt_string, AV_SAMPLE_FMT_NB);
2831         ffmpeg_exit(0);
2832     }
2833 }
2834
2835 static int opt_audio_rate(const char *opt, const char *arg)
2836 {
2837     audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2838     return 0;
2839 }
2840
2841 static int opt_audio_channels(const char *opt, const char *arg)
2842 {
2843     audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2844     return 0;
2845 }
2846
2847 static void opt_video_channel(const char *arg)
2848 {
2849     video_channel = strtol(arg, NULL, 0);
2850 }
2851
2852 static void opt_video_standard(const char *arg)
2853 {
2854     video_standard = av_strdup(arg);
2855 }
2856
2857 static void opt_codec(int *pstream_copy, char **pcodec_name,
2858                       int codec_type, const char *arg)
2859 {
2860     av_freep(pcodec_name);
2861     if (!strcmp(arg, "copy")) {
2862         *pstream_copy = 1;
2863     } else {
2864         *pcodec_name = av_strdup(arg);
2865     }
2866 }
2867
2868 static void opt_audio_codec(const char *arg)
2869 {
2870     opt_codec(&audio_stream_copy, &audio_codec_name, AVMEDIA_TYPE_AUDIO, arg);
2871 }
2872
2873 static void opt_video_codec(const char *arg)
2874 {
2875     opt_codec(&video_stream_copy, &video_codec_name, AVMEDIA_TYPE_VIDEO, arg);
2876 }
2877
2878 static void opt_subtitle_codec(const char *arg)
2879 {
2880     opt_codec(&subtitle_stream_copy, &subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, arg);
2881 }
2882
2883 static int opt_codec_tag(const char *opt, const char *arg)
2884 {
2885     char *tail;
2886     uint32_t *codec_tag;
2887
2888     codec_tag = !strcmp(opt, "atag") ? &audio_codec_tag :
2889                 !strcmp(opt, "vtag") ? &video_codec_tag :
2890                 !strcmp(opt, "stag") ? &subtitle_codec_tag : NULL;
2891     if (!codec_tag)
2892         return -1;
2893
2894     *codec_tag = strtol(arg, &tail, 0);
2895     if (!tail || *tail)
2896         *codec_tag = AV_RL32(arg);
2897
2898     return 0;
2899 }
2900
2901 static void opt_map(const char *arg)
2902 {
2903     AVStreamMap *m;
2904     char *p;
2905
2906     stream_maps = grow_array(stream_maps, sizeof(*stream_maps), &nb_stream_maps, nb_stream_maps + 1);
2907     m = &stream_maps[nb_stream_maps-1];
2908
2909     m->file_index = strtol(arg, &p, 0);
2910     if (*p)
2911         p++;
2912
2913     m->stream_index = strtol(p, &p, 0);
2914     if (*p) {
2915         p++;
2916         m->sync_file_index = strtol(p, &p, 0);
2917         if (*p)
2918             p++;
2919         m->sync_stream_index = strtol(p, &p, 0);
2920     } else {
2921         m->sync_file_index = m->file_index;
2922         m->sync_stream_index = m->stream_index;
2923     }
2924 }
2925
2926 static void parse_meta_type(char *arg, char *type, int *index, char **endptr)
2927 {
2928     *endptr = arg;
2929     if (*arg == ',') {
2930         *type = *(++arg);
2931         switch (*arg) {
2932         case 'g':
2933             break;
2934         case 's':
2935         case 'c':
2936         case 'p':
2937             *index = strtol(++arg, endptr, 0);
2938             break;
2939         default:
2940             fprintf(stderr, "Invalid metadata type %c.\n", *arg);
2941             ffmpeg_exit(1);
2942         }
2943     } else
2944         *type = 'g';
2945 }
2946
2947 static void opt_map_metadata(const char *arg)
2948 {
2949     AVMetaDataMap *m, *m1;
2950     char *p;
2951
2952     meta_data_maps = grow_array(meta_data_maps, sizeof(*meta_data_maps),
2953                                 &nb_meta_data_maps, nb_meta_data_maps + 1);
2954
2955     m = &meta_data_maps[nb_meta_data_maps - 1][0];
2956     m->file = strtol(arg, &p, 0);
2957     parse_meta_type(p, &m->type, &m->index, &p);
2958     if (*p)
2959         p++;
2960
2961     m1 = &meta_data_maps[nb_meta_data_maps - 1][1];
2962     m1->file = strtol(p, &p, 0);
2963     parse_meta_type(p, &m1->type, &m1->index, &p);
2964
2965     if (m->type == 'g' || m1->type == 'g')
2966         metadata_global_autocopy = 0;
2967     if (m->type == 's' || m1->type == 's')
2968         metadata_streams_autocopy = 0;
2969     if (m->type == 'c' || m1->type == 'c')
2970         metadata_chapters_autocopy = 0;
2971 }
2972
2973 static void opt_map_meta_data(const char *arg)
2974 {
2975     fprintf(stderr, "-map_meta_data is deprecated and will be removed soon. "
2976                     "Use -map_metadata instead.\n");
2977     opt_map_metadata(arg);
2978 }
2979
2980 static void opt_map_chapters(const char *arg)
2981 {
2982     AVChapterMap *c;
2983     char *p;
2984
2985     chapter_maps = grow_array(chapter_maps, sizeof(*chapter_maps), &nb_chapter_maps,
2986                               nb_chapter_maps + 1);
2987     c = &chapter_maps[nb_chapter_maps - 1];
2988     c->out_file = strtol(arg, &p, 0);
2989     if (*p)
2990         p++;
2991
2992     c->in_file = strtol(p, &p, 0);
2993 }
2994
2995 static void opt_input_ts_scale(const char *arg)
2996 {
2997     unsigned int stream;
2998     double scale;
2999     char *p;
3000
3001     stream = strtol(arg, &p, 0);
3002     if (*p)
3003         p++;
3004     scale= strtod(p, &p);
3005
3006     if(stream >= MAX_STREAMS)
3007         ffmpeg_exit(1);
3008
3009     input_files_ts_scale[nb_input_files] = grow_array(input_files_ts_scale[nb_input_files], sizeof(*input_files_ts_scale[nb_input_files]), &nb_input_files_ts_scale[nb_input_files], stream + 1);
3010     input_files_ts_scale[nb_input_files][stream]= scale;
3011 }
3012
3013 static int opt_recording_time(const char *opt, const char *arg)
3014 {
3015     recording_time = parse_time_or_die(opt, arg, 1);
3016     return 0;
3017 }
3018
3019 static int opt_start_time(const char *opt, const char *arg)
3020 {
3021     start_time = parse_time_or_die(opt, arg, 1);
3022     return 0;
3023 }
3024
3025 static int opt_recording_timestamp(const char *opt, const char *arg)
3026 {
3027     recording_timestamp = parse_time_or_die(opt, arg, 0) / 1000000;
3028     return 0;
3029 }
3030
3031 static int opt_input_ts_offset(const char *opt, const char *arg)
3032 {
3033     input_ts_offset = parse_time_or_die(opt, arg, 1);
3034     return 0;
3035 }
3036
3037 static enum CodecID find_codec_or_die(const char *name, int type, int encoder, int strict)
3038 {
3039     const char *codec_string = encoder ? "encoder" : "decoder";
3040     AVCodec *codec;
3041
3042     if(!name)
3043         return CODEC_ID_NONE;
3044     codec = encoder ?
3045         avcodec_find_encoder_by_name(name) :
3046         avcodec_find_decoder_by_name(name);
3047     if(!codec) {
3048         fprintf(stderr, "Unknown %s '%s'\n", codec_string, name);
3049         ffmpeg_exit(1);
3050     }
3051     if(codec->type != type) {
3052         fprintf(stderr, "Invalid %s type '%s'\n", codec_string, name);
3053         ffmpeg_exit(1);
3054     }
3055     if(codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
3056        strict > FF_COMPLIANCE_EXPERIMENTAL) {
3057         fprintf(stderr, "%s '%s' is experimental and might produce bad "
3058                 "results.\nAdd '-strict experimental' if you want to use it.\n",
3059                 codec_string, codec->name);
3060         codec = encoder ?
3061             avcodec_find_encoder(codec->id) :
3062             avcodec_find_decoder(codec->id);
3063         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
3064             fprintf(stderr, "Or use the non experimental %s '%s'.\n",
3065                     codec_string, codec->name);
3066         ffmpeg_exit(1);
3067     }
3068     return codec->id;
3069 }
3070
3071 static void opt_input_file(const char *filename)
3072 {
3073     AVFormatContext *ic;
3074     AVFormatParameters params, *ap = &params;
3075     AVInputFormat *file_iformat = NULL;
3076     int err, i, ret, rfps, rfps_base;
3077     int64_t timestamp;
3078
3079     if (last_asked_format) {
3080         if (!(file_iformat = av_find_input_format(last_asked_format))) {
3081             fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
3082             ffmpeg_exit(1);
3083         }
3084         last_asked_format = NULL;
3085     }
3086
3087     if (!strcmp(filename, "-"))
3088         filename = "pipe:";
3089
3090     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3091                     !strcmp(filename, "/dev/stdin");
3092
3093     /* get default parameters from command line */
3094     ic = avformat_alloc_context();
3095     if (!ic) {
3096         print_error(filename, AVERROR(ENOMEM));
3097         ffmpeg_exit(1);
3098     }
3099
3100     memset(ap, 0, sizeof(*ap));
3101     ap->prealloced_context = 1;
3102     ap->sample_rate = audio_sample_rate;
3103     ap->channels = audio_channels;
3104     ap->time_base.den = frame_rate.num;
3105     ap->time_base.num = frame_rate.den;
3106     ap->width = frame_width;
3107     ap->height = frame_height;
3108     ap->pix_fmt = frame_pix_fmt;
3109    // ap->sample_fmt = audio_sample_fmt; //FIXME:not implemented in libavformat
3110     ap->channel = video_channel;
3111     ap->standard = video_standard;
3112
3113     set_context_opts(ic, avformat_opts, AV_OPT_FLAG_DECODING_PARAM, NULL);
3114
3115     ic->video_codec_id   =
3116         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0,
3117                           avcodec_opts[AVMEDIA_TYPE_VIDEO   ]->strict_std_compliance);
3118     ic->audio_codec_id   =
3119         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0,
3120                           avcodec_opts[AVMEDIA_TYPE_AUDIO   ]->strict_std_compliance);
3121     ic->subtitle_codec_id=
3122         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0,
3123                           avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->strict_std_compliance);
3124     ic->flags |= AVFMT_FLAG_NONBLOCK;
3125
3126     /* open the input file with generic libav function */
3127     err = av_open_input_file(&ic, filename, file_iformat, 0, ap);
3128     if (err < 0) {
3129         print_error(filename, err);
3130         ffmpeg_exit(1);
3131     }
3132     if(opt_programid) {
3133         int i, j;
3134         int found=0;
3135         for(i=0; i<ic->nb_streams; i++){
3136             ic->streams[i]->discard= AVDISCARD_ALL;
3137         }
3138         for(i=0; i<ic->nb_programs; i++){
3139             AVProgram *p= ic->programs[i];
3140             if(p->id != opt_programid){
3141                 p->discard = AVDISCARD_ALL;
3142             }else{
3143                 found=1;
3144                 for(j=0; j<p->nb_stream_indexes; j++){
3145                     ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
3146                 }
3147             }
3148         }
3149         if(!found){
3150             fprintf(stderr, "Specified program id not found\n");
3151             ffmpeg_exit(1);
3152         }
3153         opt_programid=0;
3154     }
3155
3156     ic->loop_input = loop_input;
3157
3158     /* If not enough info to get the stream parameters, we decode the
3159        first frames to get it. (used in mpeg case for example) */
3160     ret = av_find_stream_info(ic);
3161     if (ret < 0 && verbose >= 0) {
3162         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3163         av_close_input_file(ic);
3164         ffmpeg_exit(1);
3165     }
3166
3167     timestamp = start_time;
3168     /* add the stream start time */
3169     if (ic->start_time != AV_NOPTS_VALUE)
3170         timestamp += ic->start_time;
3171
3172     /* if seeking requested, we execute it */
3173     if (start_time != 0) {
3174         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3175         if (ret < 0) {
3176             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3177                     filename, (double)timestamp / AV_TIME_BASE);
3178         }
3179         /* reset seek info */
3180         start_time = 0;
3181     }
3182
3183     /* update the current parameters so that they match the one of the input stream */
3184     for(i=0;i<ic->nb_streams;i++) {
3185         AVStream *st = ic->streams[i];
3186         AVCodecContext *dec = st->codec;
3187         dec->thread_count = thread_count;
3188         input_codecs = grow_array(input_codecs, sizeof(*input_codecs), &nb_input_codecs, nb_input_codecs + 1);
3189         switch (dec->codec_type) {
3190         case AVMEDIA_TYPE_AUDIO:
3191             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(audio_codec_name);
3192             set_context_opts(dec, avcodec_opts[AVMEDIA_TYPE_AUDIO], AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM, input_codecs[nb_input_codecs-1]);
3193             //fprintf(stderr, "\nInput Audio channels: %d", dec->channels);
3194             channel_layout    = dec->channel_layout;
3195             audio_channels    = dec->channels;
3196             audio_sample_rate = dec->sample_rate;
3197             audio_sample_fmt  = dec->sample_fmt;
3198             if(audio_disable)
3199                 st->discard= AVDISCARD_ALL;
3200             /* Note that av_find_stream_info can add more streams, and we
3201              * currently have no chance of setting up lowres decoding
3202              * early enough for them. */
3203             if (dec->lowres)
3204                 audio_sample_rate >>= dec->lowres;
3205             break;
3206         case AVMEDIA_TYPE_VIDEO:
3207             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(video_codec_name);
3208             set_context_opts(dec, avcodec_opts[AVMEDIA_TYPE_VIDEO], AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM, input_codecs[nb_input_codecs-1]);
3209             frame_height = dec->height;
3210             frame_width  = dec->width;
3211             if(ic->streams[i]->sample_aspect_ratio.num)
3212                 frame_aspect_ratio=av_q2d(ic->streams[i]->sample_aspect_ratio);
3213             else
3214                 frame_aspect_ratio=av_q2d(dec->sample_aspect_ratio);
3215             frame_aspect_ratio *= (float) dec->width / dec->height;
3216             frame_pix_fmt = dec->pix_fmt;
3217             rfps      = ic->streams[i]->r_frame_rate.num;
3218             rfps_base = ic->streams[i]->r_frame_rate.den;
3219             if (dec->lowres) {
3220                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3221                 frame_height >>= dec->lowres;
3222                 frame_width  >>= dec->lowres;
3223                 dec->height = frame_height;
3224                 dec->width  = frame_width;
3225             }
3226             if(me_threshold)
3227                 dec->debug |= FF_DEBUG_MV;
3228
3229             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3230
3231                 if (verbose >= 0)
3232                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3233                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3234
3235                     (float)rfps / rfps_base, rfps, rfps_base);
3236             }
3237             /* update the current frame rate to match the stream frame rate */
3238             frame_rate.num = rfps;
3239             frame_rate.den = rfps_base;
3240
3241             if(video_disable)
3242                 st->discard= AVDISCARD_ALL;
3243             else if(video_discard)
3244                 st->discard= video_discard;
3245             break;
3246         case AVMEDIA_TYPE_DATA:
3247             break;
3248         case AVMEDIA_TYPE_SUBTITLE:
3249             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(subtitle_codec_name);
3250             if(subtitle_disable)
3251                 st->discard = AVDISCARD_ALL;
3252             break;
3253         case AVMEDIA_TYPE_ATTACHMENT:
3254         case AVMEDIA_TYPE_UNKNOWN:
3255             break;
3256         default:
3257             abort();
3258         }
3259     }
3260
3261     input_files[nb_input_files] = ic;
3262     input_files_ts_offset[nb_input_files] = input_ts_offset - (copy_ts ? 0 : timestamp);
3263     /* dump the file content */
3264     if (verbose >= 0)
3265         av_dump_format(ic, nb_input_files, filename, 0);
3266
3267     nb_input_files++;
3268
3269     video_channel = 0;
3270
3271     av_freep(&video_codec_name);
3272     av_freep(&audio_codec_name);
3273     av_freep(&subtitle_codec_name);
3274 }
3275
3276 static void check_audio_video_sub_inputs(int *has_video_ptr, int *has_audio_ptr,
3277                                          int *has_subtitle_ptr)
3278 {
3279     int has_video, has_audio, has_subtitle, i, j;
3280     AVFormatContext *ic;
3281
3282     has_video = 0;
3283     has_audio = 0;
3284     has_subtitle = 0;
3285     for(j=0;j<nb_input_files;j++) {
3286         ic = input_files[j];
3287         for(i=0;i<ic->nb_streams;i++) {
3288             AVCodecContext *enc = ic->streams[i]->codec;
3289             switch(enc->codec_type) {
3290             case AVMEDIA_TYPE_AUDIO:
3291                 has_audio = 1;
3292                 break;
3293             case AVMEDIA_TYPE_VIDEO:
3294                 has_video = 1;
3295                 break;
3296             case AVMEDIA_TYPE_SUBTITLE:
3297                 has_subtitle = 1;
3298                 break;
3299             case AVMEDIA_TYPE_DATA:
3300             case AVMEDIA_TYPE_ATTACHMENT:
3301             case AVMEDIA_TYPE_UNKNOWN:
3302                 break;
3303             default:
3304                 abort();
3305             }
3306         }
3307     }
3308     *has_video_ptr = has_video;
3309     *has_audio_ptr = has_audio;
3310     *has_subtitle_ptr = has_subtitle;
3311 }
3312
3313 static void new_video_stream(AVFormatContext *oc, int file_idx)
3314 {
3315     AVStream *st;
3316     AVOutputStream *ost;
3317     AVCodecContext *video_enc;
3318     enum CodecID codec_id = CODEC_ID_NONE;
3319     AVCodec *codec= NULL;
3320
3321     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3322     if (!st) {
3323         fprintf(stderr, "Could not alloc stream\n");
3324         ffmpeg_exit(1);
3325     }
3326     ost = new_output_stream(oc, file_idx);
3327
3328     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3329     if(!video_stream_copy){
3330         if (video_codec_name) {
3331             codec_id = find_codec_or_die(video_codec_name, AVMEDIA_TYPE_VIDEO, 1,
3332                                          avcodec_opts[AVMEDIA_TYPE_VIDEO]->strict_std_compliance);
3333             codec = avcodec_find_encoder_by_name(video_codec_name);
3334             output_codecs[nb_output_codecs-1] = codec;
3335         } else {
3336             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_VIDEO);
3337             codec = avcodec_find_encoder(codec_id);
3338         }
3339     }
3340
3341     avcodec_get_context_defaults3(st->codec, codec);
3342     ost->bitstream_filters = video_bitstream_filters;
3343     video_bitstream_filters= NULL;
3344
3345     st->codec->thread_count= thread_count;
3346
3347     video_enc = st->codec;
3348
3349     if(video_codec_tag)
3350         video_enc->codec_tag= video_codec_tag;
3351
3352     if(   (video_global_header&1)
3353        || (video_global_header==0 && (oc->oformat->flags & AVFMT_GLOBALHEADER))){
3354         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3355         avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3356     }
3357     if(video_global_header&2){
3358         video_enc->flags2 |= CODEC_FLAG2_LOCAL_HEADER;
3359         avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags2|= CODEC_FLAG2_LOCAL_HEADER;
3360     }
3361
3362     if (video_stream_copy) {
3363         st->stream_copy = 1;
3364         video_enc->codec_type = AVMEDIA_TYPE_VIDEO;
3365         video_enc->sample_aspect_ratio =
3366         st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3367     } else {
3368         const char *p;
3369         int i;
3370         AVRational fps= frame_rate.num ? frame_rate : (AVRational){25,1};
3371
3372         video_enc->codec_id = codec_id;
3373         set_context_opts(video_enc, avcodec_opts[AVMEDIA_TYPE_VIDEO], AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3374
3375         if (codec && codec->supported_framerates && !force_fps)
3376             fps = codec->supported_framerates[av_find_nearest_q_idx(fps, codec->supported_framerates)];
3377         video_enc->time_base.den = fps.num;
3378         video_enc->time_base.num = fps.den;
3379
3380         video_enc->width = frame_width;
3381         video_enc->height = frame_height;
3382         video_enc->sample_aspect_ratio = av_d2q(frame_aspect_ratio*video_enc->height/video_enc->width, 255);
3383         video_enc->pix_fmt = frame_pix_fmt;
3384         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3385
3386         choose_pixel_fmt(st, codec);
3387
3388         if (intra_only)
3389             video_enc->gop_size = 0;
3390         if (video_qscale || same_quality) {
3391             video_enc->flags |= CODEC_FLAG_QSCALE;
3392             video_enc->global_quality=
3393                 st->quality = FF_QP2LAMBDA * video_qscale;
3394         }
3395
3396         if(intra_matrix)
3397             video_enc->intra_matrix = intra_matrix;
3398         if(inter_matrix)
3399             video_enc->inter_matrix = inter_matrix;
3400
3401         p= video_rc_override_string;
3402         for(i=0; p; i++){
3403             int start, end, q;
3404             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3405             if(e!=3){
3406                 fprintf(stderr, "error parsing rc_override\n");
3407                 ffmpeg_exit(1);
3408             }
3409             video_enc->rc_override=
3410                 av_realloc(video_enc->rc_override,
3411                            sizeof(RcOverride)*(i+1));
3412             video_enc->rc_override[i].start_frame= start;
3413             video_enc->rc_override[i].end_frame  = end;
3414             if(q>0){
3415                 video_enc->rc_override[i].qscale= q;
3416                 video_enc->rc_override[i].quality_factor= 1.0;
3417             }
3418             else{
3419                 video_enc->rc_override[i].qscale= 0;
3420                 video_enc->rc_override[i].quality_factor= -q/100.0;
3421             }
3422             p= strchr(p, '/');
3423             if(p) p++;
3424         }
3425         video_enc->rc_override_count=i;
3426         if (!video_enc->rc_initial_buffer_occupancy)
3427             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3428         video_enc->me_threshold= me_threshold;
3429         video_enc->intra_dc_precision= intra_dc_precision - 8;
3430
3431         if (do_psnr)
3432             video_enc->flags|= CODEC_FLAG_PSNR;
3433
3434         /* two pass mode */
3435         if (do_pass) {
3436             if (do_pass == 1) {
3437                 video_enc->flags |= CODEC_FLAG_PASS1;
3438             } else {
3439                 video_enc->flags |= CODEC_FLAG_PASS2;
3440             }
3441         }
3442
3443         if (forced_key_frames)
3444             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3445     }
3446     if (video_language) {
3447         av_metadata_set2(&st->metadata, "language", video_language, 0);
3448         av_freep(&video_language);
3449     }
3450
3451     /* reset some key parameters */
3452     video_disable = 0;
3453     av_freep(&video_codec_name);
3454     av_freep(&forced_key_frames);
3455     video_stream_copy = 0;
3456     frame_pix_fmt = PIX_FMT_NONE;
3457 }
3458
3459 static void new_audio_stream(AVFormatContext *oc, int file_idx)
3460 {
3461     AVStream *st;
3462     AVOutputStream *ost;
3463     AVCodec *codec= NULL;
3464     AVCodecContext *audio_enc;
3465     enum CodecID codec_id = CODEC_ID_NONE;
3466
3467     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3468     if (!st) {
3469         fprintf(stderr, "Could not alloc stream\n");
3470         ffmpeg_exit(1);
3471     }
3472     ost = new_output_stream(oc, file_idx);
3473
3474     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3475     if(!audio_stream_copy){
3476         if (audio_codec_name) {
3477             codec_id = find_codec_or_die(audio_codec_name, AVMEDIA_TYPE_AUDIO, 1,
3478                                          avcodec_opts[AVMEDIA_TYPE_AUDIO]->strict_std_compliance);
3479             codec = avcodec_find_encoder_by_name(audio_codec_name);
3480             output_codecs[nb_output_codecs-1] = codec;
3481         } else {
3482             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_AUDIO);
3483             codec = avcodec_find_encoder(codec_id);
3484         }
3485     }
3486
3487     avcodec_get_context_defaults3(st->codec, codec);
3488
3489     ost->bitstream_filters = audio_bitstream_filters;
3490     audio_bitstream_filters= NULL;
3491
3492     st->codec->thread_count= thread_count;
3493
3494     audio_enc = st->codec;
3495     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3496
3497     if(audio_codec_tag)
3498         audio_enc->codec_tag= audio_codec_tag;
3499
3500     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3501         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3502         avcodec_opts[AVMEDIA_TYPE_AUDIO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3503     }
3504     if (audio_stream_copy) {
3505         st->stream_copy = 1;
3506         audio_enc->channels = audio_channels;
3507         audio_enc->sample_rate = audio_sample_rate;
3508     } else {
3509         audio_enc->codec_id = codec_id;
3510         set_context_opts(audio_enc, avcodec_opts[AVMEDIA_TYPE_AUDIO], AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3511
3512         if (audio_qscale > QSCALE_NONE) {
3513             audio_enc->flags |= CODEC_FLAG_QSCALE;
3514             audio_enc->global_quality = st->quality = FF_QP2LAMBDA * audio_qscale;
3515         }
3516         audio_enc->channels = audio_channels;
3517         audio_enc->sample_fmt = audio_sample_fmt;
3518         audio_enc->sample_rate = audio_sample_rate;
3519         audio_enc->channel_layout = channel_layout;
3520         if (av_get_channel_layout_nb_channels(channel_layout) != audio_channels)
3521             audio_enc->channel_layout = 0;
3522         choose_sample_fmt(st, codec);
3523         choose_sample_rate(st, codec);
3524     }
3525     audio_enc->time_base= (AVRational){1, audio_sample_rate};
3526     if (audio_language) {
3527         av_metadata_set2(&st->metadata, "language", audio_language, 0);
3528         av_freep(&audio_language);
3529     }
3530
3531     /* reset some key parameters */
3532     audio_disable = 0;
3533     av_freep(&audio_codec_name);
3534     audio_stream_copy = 0;
3535 }
3536
3537 static void new_subtitle_stream(AVFormatContext *oc, int file_idx)
3538 {
3539     AVStream *st;
3540     AVOutputStream *ost;
3541     AVCodec *codec=NULL;
3542     AVCodecContext *subtitle_enc;
3543     enum CodecID codec_id = CODEC_ID_NONE;
3544
3545     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3546     if (!st) {
3547         fprintf(stderr, "Could not alloc stream\n");
3548         ffmpeg_exit(1);
3549     }
3550     ost = new_output_stream(oc, file_idx);
3551     subtitle_enc = st->codec;
3552     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3553     if(!subtitle_stream_copy){
3554         if (subtitle_codec_name) {
3555             codec_id = find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 1,
3556                                          avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->strict_std_compliance);
3557             codec= output_codecs[nb_output_codecs-1] = avcodec_find_encoder_by_name(subtitle_codec_name);
3558         } else {
3559             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_SUBTITLE);
3560             codec = avcodec_find_encoder(codec_id);
3561         }
3562     }
3563     avcodec_get_context_defaults3(st->codec, codec);
3564
3565     ost->bitstream_filters = subtitle_bitstream_filters;
3566     subtitle_bitstream_filters= NULL;
3567
3568     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3569
3570     if(subtitle_codec_tag)
3571         subtitle_enc->codec_tag= subtitle_codec_tag;
3572
3573     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3574         subtitle_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3575         avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->flags |= CODEC_FLAG_GLOBAL_HEADER;
3576     }
3577     if (subtitle_stream_copy) {
3578         st->stream_copy = 1;
3579     } else {
3580         subtitle_enc->codec_id = codec_id;
3581         set_context_opts(avcodec_opts[AVMEDIA_TYPE_SUBTITLE], subtitle_enc, AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3582     }
3583
3584     if (subtitle_language) {
3585         av_metadata_set2(&st->metadata, "language", subtitle_language, 0);
3586         av_freep(&subtitle_language);
3587     }
3588
3589     subtitle_disable = 0;
3590     av_freep(&subtitle_codec_name);
3591     subtitle_stream_copy = 0;
3592 }
3593
3594 static int opt_new_stream(const char *opt, const char *arg)
3595 {
3596     AVFormatContext *oc;
3597     int file_idx = nb_output_files - 1;
3598     if (nb_output_files <= 0) {
3599         fprintf(stderr, "At least one output file must be specified\n");
3600         ffmpeg_exit(1);
3601     }
3602     oc = output_files[file_idx];
3603
3604     if      (!strcmp(opt, "newvideo"   )) new_video_stream   (oc, file_idx);
3605     else if (!strcmp(opt, "newaudio"   )) new_audio_stream   (oc, file_idx);
3606     else if (!strcmp(opt, "newsubtitle")) new_subtitle_stream(oc, file_idx);
3607     else av_assert0(0);
3608     return 0;
3609 }
3610
3611 /* arg format is "output-stream-index:streamid-value". */
3612 static int opt_streamid(const char *opt, const char *arg)
3613 {
3614     int idx;
3615     char *p;
3616     char idx_str[16];
3617
3618     strncpy(idx_str, arg, sizeof(idx_str));
3619     idx_str[sizeof(idx_str)-1] = '\0';
3620     p = strchr(idx_str, ':');
3621     if (!p) {
3622         fprintf(stderr,
3623                 "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3624                 arg, opt);
3625         ffmpeg_exit(1);
3626     }
3627     *p++ = '\0';
3628     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, MAX_STREAMS-1);
3629     streamid_map = grow_array(streamid_map, sizeof(*streamid_map), &nb_streamid_map, idx+1);
3630     streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3631     return 0;
3632 }
3633
3634 static void opt_output_file(const char *filename)
3635 {
3636     AVFormatContext *oc;
3637     int err, use_video, use_audio, use_subtitle;
3638     int input_has_video, input_has_audio, input_has_subtitle;
3639     AVFormatParameters params, *ap = &params;
3640     AVOutputFormat *file_oformat;
3641
3642     if (!strcmp(filename, "-"))
3643         filename = "pipe:";
3644
3645     oc = avformat_alloc_context();
3646     if (!oc) {
3647         print_error(filename, AVERROR(ENOMEM));
3648         ffmpeg_exit(1);
3649     }
3650
3651     if (last_asked_format) {
3652         file_oformat = av_guess_format(last_asked_format, NULL, NULL);
3653         if (!file_oformat) {
3654             fprintf(stderr, "Requested output format '%s' is not a suitable output format\n", last_asked_format);
3655             ffmpeg_exit(1);
3656         }
3657         last_asked_format = NULL;
3658     } else {
3659         file_oformat = av_guess_format(NULL, filename, NULL);
3660         if (!file_oformat) {
3661             fprintf(stderr, "Unable to find a suitable output format for '%s'\n",
3662                     filename);
3663             ffmpeg_exit(1);
3664         }
3665     }
3666
3667     oc->oformat = file_oformat;
3668     av_strlcpy(oc->filename, filename, sizeof(oc->filename));
3669