9513c7f5fc212c66cc62a0e5139d39e0ac83792c
[ffmpeg.git] / ffmpeg.c
1 /*
2  * FFmpeg main
3  * Copyright (c) 2000-2003 Fabrice Bellard
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg 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  * FFmpeg 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 FFmpeg; 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 "libavcore/parseutils.h"
40 #include "libavutil/colorspace.h"
41 #include "libavutil/fifo.h"
42 #include "libavutil/pixdesc.h"
43 #include "libavutil/avstring.h"
44 #include "libavutil/libm.h"
45 #include "libavformat/os_support.h"
46
47 #if CONFIG_AVFILTER
48 # include "libavfilter/avfilter.h"
49 # include "libavfilter/avfiltergraph.h"
50 # include "libavfilter/graphparser.h"
51 # include "libavfilter/vsrc_buffer.h"
52 #endif
53
54 #if HAVE_SYS_RESOURCE_H
55 #include <sys/types.h>
56 #include <sys/time.h>
57 #include <sys/resource.h>
58 #elif HAVE_GETPROCESSTIMES
59 #include <windows.h>
60 #endif
61 #if HAVE_GETPROCESSMEMORYINFO
62 #include <windows.h>
63 #include <psapi.h>
64 #endif
65
66 #if HAVE_SYS_SELECT_H
67 #include <sys/select.h>
68 #endif
69
70 #if HAVE_TERMIOS_H
71 #include <fcntl.h>
72 #include <sys/ioctl.h>
73 #include <sys/time.h>
74 #include <termios.h>
75 #elif HAVE_CONIO_H
76 #include <conio.h>
77 #endif
78 #include <time.h>
79
80 #include "cmdutils.h"
81
82 #include "libavutil/avassert.h"
83
84 const char program_name[] = "FFmpeg";
85 const int program_birth_year = 2000;
86
87 /* select an input stream for an output stream */
88 typedef struct AVStreamMap {
89     int file_index;
90     int stream_index;
91     int sync_file_index;
92     int sync_stream_index;
93 } AVStreamMap;
94
95 /**
96  * select an input file for an output file
97  */
98 typedef struct AVMetaDataMap {
99     int out_file;
100     int in_file;
101 } AVMetaDataMap;
102
103 static const OptionDef options[];
104
105 #define MAX_FILES 100
106 #if !FF_API_MAX_STREAMS
107 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
108 #endif
109
110 static const char *last_asked_format = NULL;
111 static AVFormatContext *input_files[MAX_FILES];
112 static int64_t input_files_ts_offset[MAX_FILES];
113 static double *input_files_ts_scale[MAX_FILES] = {NULL};
114 static AVCodec **input_codecs = NULL;
115 static int nb_input_files = 0;
116 static int nb_input_codecs = 0;
117 static int nb_input_files_ts_scale[MAX_FILES] = {0};
118
119 static AVFormatContext *output_files[MAX_FILES];
120 static AVCodec **output_codecs = NULL;
121 static int nb_output_files = 0;
122 static int nb_output_codecs = 0;
123
124 static AVStreamMap *stream_maps = NULL;
125 static int nb_stream_maps;
126
127 static AVMetaDataMap meta_data_maps[MAX_FILES];
128 static int nb_meta_data_maps;
129
130 /* indexed by output file stream index */
131 static int *streamid_map = NULL;
132 static int nb_streamid_map = 0;
133
134 static int frame_width  = 0;
135 static int frame_height = 0;
136 static float frame_aspect_ratio = 0;
137 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
138 static enum SampleFormat audio_sample_fmt = SAMPLE_FMT_NONE;
139 static int frame_topBand  = 0;
140 static int frame_bottomBand = 0;
141 static int frame_leftBand  = 0;
142 static int frame_rightBand = 0;
143 static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
144 static AVRational frame_rate;
145 static float video_qscale = 0;
146 static uint16_t *intra_matrix = NULL;
147 static uint16_t *inter_matrix = NULL;
148 static const char *video_rc_override_string=NULL;
149 static int video_disable = 0;
150 static int video_discard = 0;
151 static char *video_codec_name = NULL;
152 static unsigned int video_codec_tag = 0;
153 static char *video_language = NULL;
154 static int same_quality = 0;
155 static int do_deinterlace = 0;
156 static int top_field_first = -1;
157 static int me_threshold = 0;
158 static int intra_dc_precision = 8;
159 static int loop_input = 0;
160 static int loop_output = AVFMT_NOOUTPUTLOOP;
161 static int qp_hist = 0;
162 #if CONFIG_AVFILTER
163 static char *vfilters = NULL;
164 AVFilterGraph *graph = NULL;
165 #endif
166
167 static int intra_only = 0;
168 static int audio_sample_rate = 44100;
169 static int64_t channel_layout = 0;
170 #define QSCALE_NONE -99999
171 static float audio_qscale = QSCALE_NONE;
172 static int audio_disable = 0;
173 static int audio_channels = 1;
174 static char  *audio_codec_name = NULL;
175 static unsigned int audio_codec_tag = 0;
176 static char *audio_language = NULL;
177
178 static int subtitle_disable = 0;
179 static char *subtitle_codec_name = NULL;
180 static char *subtitle_language = NULL;
181 static unsigned int subtitle_codec_tag = 0;
182
183 static float mux_preload= 0.5;
184 static float mux_max_delay= 0.7;
185
186 static int64_t recording_time = INT64_MAX;
187 static int64_t start_time = 0;
188 static int64_t recording_timestamp = 0;
189 static int64_t input_ts_offset = 0;
190 static int file_overwrite = 0;
191 static int metadata_count;
192 static AVMetadataTag *metadata;
193 static int do_benchmark = 0;
194 static int do_hex_dump = 0;
195 static int do_pkt_dump = 0;
196 static int do_psnr = 0;
197 static int do_pass = 0;
198 static char *pass_logfilename_prefix = NULL;
199 static int audio_stream_copy = 0;
200 static int video_stream_copy = 0;
201 static int subtitle_stream_copy = 0;
202 static int video_sync_method= -1;
203 static int audio_sync_method= 0;
204 static float audio_drift_threshold= 0.1;
205 static int copy_ts= 0;
206 static int opt_shortest = 0;
207 static int video_global_header = 0;
208 static char *vstats_filename;
209 static FILE *vstats_file;
210 static int opt_programid = 0;
211 static int copy_initial_nonkeyframes = 0;
212
213 static int rate_emu = 0;
214
215 static int  video_channel = 0;
216 static char *video_standard;
217
218 static int audio_volume = 256;
219
220 static int exit_on_error = 0;
221 static int using_stdin = 0;
222 static int verbose = 1;
223 static int thread_count= 1;
224 static int q_pressed = 0;
225 static int64_t video_size = 0;
226 static int64_t audio_size = 0;
227 static int64_t extra_size = 0;
228 static int nb_frames_dup = 0;
229 static int nb_frames_drop = 0;
230 static int input_sync;
231 static uint64_t limit_filesize = 0;
232 static int force_fps = 0;
233
234 static int pgmyuv_compatibility_hack=0;
235 static float dts_delta_threshold = 10;
236
237 static unsigned int sws_flags = SWS_BICUBIC;
238
239 static int64_t timer_start;
240
241 static uint8_t *audio_buf;
242 static uint8_t *audio_out;
243 unsigned int allocated_audio_out_size, allocated_audio_buf_size;
244
245 static short *samples;
246
247 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
248 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
249 static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL;
250
251 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
252
253 struct AVInputStream;
254
255 typedef struct AVOutputStream {
256     int file_index;          /* file index */
257     int index;               /* stream index in the output file */
258     int source_index;        /* AVInputStream index */
259     AVStream *st;            /* stream in the output file */
260     int encoding_needed;     /* true if encoding needed for this stream */
261     int frame_number;
262     /* input pts and corresponding output pts
263        for A/V sync */
264     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
265     struct AVInputStream *sync_ist; /* input stream to sync against */
266     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
267     AVBitStreamFilterContext *bitstream_filters;
268     /* video only */
269     int video_resample;
270     AVFrame pict_tmp;      /* temporary image for resampling */
271     struct SwsContext *img_resample_ctx; /* for image resampling */
272     int resample_height;
273     int resample_width;
274     int resample_pix_fmt;
275
276     /* full frame size of first frame */
277     int original_height;
278     int original_width;
279
280     /* cropping area sizes */
281     int video_crop;
282     int topBand;
283     int bottomBand;
284     int leftBand;
285     int rightBand;
286
287     /* cropping area of first frame */
288     int original_topBand;
289     int original_bottomBand;
290     int original_leftBand;
291     int original_rightBand;
292
293     /* audio only */
294     int audio_resample;
295     ReSampleContext *resample; /* for audio resampling */
296     int reformat_pair;
297     AVAudioConvert *reformat_ctx;
298     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
299     FILE *logfile;
300 } AVOutputStream;
301
302 static AVOutputStream **output_streams_for_file[MAX_FILES] = { NULL };
303 static int nb_output_streams_for_file[MAX_FILES] = { 0 };
304
305 typedef struct AVInputStream {
306     int file_index;
307     int index;
308     AVStream *st;
309     int discard;             /* true if stream data should be discarded */
310     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
311     int64_t sample_index;      /* current sample */
312
313     int64_t       start;     /* time when read started */
314     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
315                                 is not defined */
316     int64_t       pts;       /* current pts */
317     PtsCorrectionContext pts_ctx;
318     int is_start;            /* is 1 at the start and after a discontinuity */
319     int showed_multi_packet_warning;
320     int is_past_recording_time;
321 #if CONFIG_AVFILTER
322     AVFilterContext *output_video_filter;
323     AVFilterContext *input_video_filter;
324     AVFrame *filter_frame;
325     int has_filter_frame;
326     AVFilterBufferRef *picref;
327 #endif
328 } AVInputStream;
329
330 typedef struct AVInputFile {
331     int eof_reached;      /* true if eof reached */
332     int ist_index;        /* index of first stream in ist_table */
333     int buffer_size;      /* current total buffer size */
334     int nb_streams;       /* nb streams we are aware of */
335 } AVInputFile;
336
337 #if HAVE_TERMIOS_H
338
339 /* init terminal so that we can grab keys */
340 static struct termios oldtty;
341 #endif
342
343 #if CONFIG_AVFILTER
344
345 static int get_filtered_video_pic(AVFilterContext *ctx,
346                                   AVFilterBufferRef **picref, AVFrame *pic2,
347                                   uint64_t *pts)
348 {
349     AVFilterBufferRef *pic;
350
351     if(avfilter_request_frame(ctx->inputs[0]))
352         return -1;
353     if(!(pic = ctx->inputs[0]->cur_buf))
354         return -1;
355     *picref = pic;
356     ctx->inputs[0]->cur_buf = NULL;
357
358     *pts          = pic->pts;
359
360     memcpy(pic2->data,     pic->data,     sizeof(pic->data));
361     memcpy(pic2->linesize, pic->linesize, sizeof(pic->linesize));
362     pic2->interlaced_frame = pic->video->interlaced;
363     pic2->top_field_first  = pic->video->top_field_first;
364
365     return 1;
366 }
367
368 static int configure_filters(AVInputStream *ist, AVOutputStream *ost)
369 {
370     AVFilterContext *last_filter, *filter;
371     /** filter graph containing all filters including input & output */
372     AVCodecContext *codec = ost->st->codec;
373     AVCodecContext *icodec = ist->st->codec;
374     FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
375     char args[255];
376     int ret;
377
378     graph = av_mallocz(sizeof(AVFilterGraph));
379
380     if ((ret = avfilter_open(&ist->input_video_filter, avfilter_get_by_name("buffer"), "src")) < 0)
381         return ret;
382     if ((ret = avfilter_open(&ist->output_video_filter, &ffsink, "out")) < 0)
383         return ret;
384
385     snprintf(args, 255, "%d:%d:%d:%d:%d", ist->st->codec->width,
386              ist->st->codec->height, ist->st->codec->pix_fmt,
387              ist->st->time_base.num, ist->st->time_base.den);
388     if ((ret = avfilter_init_filter(ist->input_video_filter, args, NULL)) < 0)
389         return ret;
390     if ((ret = avfilter_init_filter(ist->output_video_filter, NULL, &ffsink_ctx)) < 0)
391         return ret;
392
393     /* add input and output filters to the overall graph */
394     avfilter_graph_add_filter(graph, ist->input_video_filter);
395     avfilter_graph_add_filter(graph, ist->output_video_filter);
396
397     last_filter = ist->input_video_filter;
398
399     if (ost->video_crop) {
400         snprintf(args, 255, "%d:%d:%d:%d",
401                  codec->width, codec->height,
402                  ost->leftBand, ost->topBand);
403         if ((ret = avfilter_open(&filter, avfilter_get_by_name("crop"), NULL)) < 0)
404             return ret;
405         if ((ret = avfilter_init_filter(filter, args, NULL)) < 0)
406             return ret;
407         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
408             return ret;
409         last_filter = filter;
410         avfilter_graph_add_filter(graph, last_filter);
411     }
412
413     if((codec->width !=
414         icodec->width - (frame_leftBand + frame_rightBand)) ||
415        (codec->height != icodec->height - (frame_topBand  + frame_bottomBand))) {
416         snprintf(args, 255, "%d:%d:flags=0x%X",
417                  codec->width,
418                  codec->height,
419                  (int)av_get_int(sws_opts, "sws_flags", NULL));
420         if ((ret = avfilter_open(&filter, avfilter_get_by_name("scale"), NULL)) < 0)
421             return ret;
422         if ((ret = avfilter_init_filter(filter, args, NULL)) < 0)
423             return ret;
424         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
425             return ret;
426         last_filter = filter;
427         avfilter_graph_add_filter(graph, last_filter);
428     }
429
430     snprintf(args, sizeof(args), "flags=0x%X", (int)av_get_int(sws_opts, "sws_flags", NULL));
431     graph->scale_sws_opts = av_strdup(args);
432
433     if (vfilters) {
434         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
435         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
436
437         outputs->name    = av_strdup("in");
438         outputs->filter  = last_filter;
439         outputs->pad_idx = 0;
440         outputs->next    = NULL;
441
442         inputs->name    = av_strdup("out");
443         inputs->filter  = ist->output_video_filter;
444         inputs->pad_idx = 0;
445         inputs->next    = NULL;
446
447         if ((ret = avfilter_graph_parse(graph, vfilters, inputs, outputs, NULL)) < 0)
448             return ret;
449         av_freep(&vfilters);
450     } else {
451         if ((ret = avfilter_link(last_filter, 0, ist->output_video_filter, 0)) < 0)
452             return ret;
453     }
454
455     /* configure all the filter links */
456     if ((ret = avfilter_graph_check_validity(graph, NULL)) < 0)
457         return ret;
458     if ((ret = avfilter_graph_config_formats(graph, NULL)) < 0)
459         return ret;
460     if ((ret = avfilter_graph_config_links(graph, NULL)) < 0)
461         return ret;
462
463     codec->width  = ist->output_video_filter->inputs[0]->w;
464     codec->height = ist->output_video_filter->inputs[0]->h;
465
466     return 0;
467 }
468 #endif /* CONFIG_AVFILTER */
469
470 static void term_exit(void)
471 {
472     av_log(NULL, AV_LOG_QUIET, "");
473 #if HAVE_TERMIOS_H
474     tcsetattr (0, TCSANOW, &oldtty);
475 #endif
476 }
477
478 static volatile int received_sigterm = 0;
479
480 static void
481 sigterm_handler(int sig)
482 {
483     received_sigterm = sig;
484     term_exit();
485 }
486
487 static void term_init(void)
488 {
489 #if HAVE_TERMIOS_H
490     struct termios tty;
491
492     tcgetattr (0, &tty);
493     oldtty = tty;
494     atexit(term_exit);
495
496     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
497                           |INLCR|IGNCR|ICRNL|IXON);
498     tty.c_oflag |= OPOST;
499     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
500     tty.c_cflag &= ~(CSIZE|PARENB);
501     tty.c_cflag |= CS8;
502     tty.c_cc[VMIN] = 1;
503     tty.c_cc[VTIME] = 0;
504
505     tcsetattr (0, TCSANOW, &tty);
506     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
507 #endif
508
509     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
510     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
511 #ifdef SIGXCPU
512     signal(SIGXCPU, sigterm_handler);
513 #endif
514 }
515
516 /* read a key without blocking */
517 static int read_key(void)
518 {
519 #if HAVE_TERMIOS_H
520     int n = 1;
521     unsigned char ch;
522     struct timeval tv;
523     fd_set rfds;
524
525     FD_ZERO(&rfds);
526     FD_SET(0, &rfds);
527     tv.tv_sec = 0;
528     tv.tv_usec = 0;
529     n = select(1, &rfds, NULL, NULL, &tv);
530     if (n > 0) {
531         n = read(0, &ch, 1);
532         if (n == 1)
533             return ch;
534
535         return n;
536     }
537 #elif HAVE_CONIO_H
538     if(kbhit())
539         return(getch());
540 #endif
541     return -1;
542 }
543
544 static int decode_interrupt_cb(void)
545 {
546     return q_pressed || (q_pressed = read_key() == 'q');
547 }
548
549 static int ffmpeg_exit(int ret)
550 {
551     int i;
552
553     /* close files */
554     for(i=0;i<nb_output_files;i++) {
555         /* maybe av_close_output_file ??? */
556         AVFormatContext *s = output_files[i];
557         int j;
558         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
559             url_fclose(s->pb);
560         for(j=0;j<s->nb_streams;j++) {
561             av_metadata_free(&s->streams[j]->metadata);
562             av_free(s->streams[j]->codec);
563             av_free(s->streams[j]->info);
564             av_free(s->streams[j]);
565         }
566         for(j=0;j<s->nb_programs;j++) {
567             av_metadata_free(&s->programs[j]->metadata);
568         }
569         for(j=0;j<s->nb_chapters;j++) {
570             av_metadata_free(&s->chapters[j]->metadata);
571         }
572         av_metadata_free(&s->metadata);
573         av_free(s);
574         av_free(output_streams_for_file[i]);
575     }
576     for(i=0;i<nb_input_files;i++) {
577         av_close_input_file(input_files[i]);
578         av_free(input_files_ts_scale[i]);
579     }
580
581     av_free(intra_matrix);
582     av_free(inter_matrix);
583
584     if (vstats_file)
585         fclose(vstats_file);
586     av_free(vstats_filename);
587
588     av_free(opt_names);
589     av_free(streamid_map);
590     av_free(input_codecs);
591     av_free(output_codecs);
592     av_free(stream_maps);
593
594     av_free(video_codec_name);
595     av_free(audio_codec_name);
596     av_free(subtitle_codec_name);
597
598     av_free(video_standard);
599
600     uninit_opts();
601     av_free(audio_buf);
602     av_free(audio_out);
603     allocated_audio_buf_size= allocated_audio_out_size= 0;
604     av_free(samples);
605
606 #if CONFIG_AVFILTER
607     avfilter_uninit();
608 #endif
609
610     if (received_sigterm) {
611         fprintf(stderr,
612             "Received signal %d: terminating.\n",
613             (int) received_sigterm);
614         exit (255);
615     }
616
617     exit(ret); /* not all OS-es handle main() return value */
618     return ret;
619 }
620
621 /* similar to ff_dynarray_add() and av_fast_realloc() */
622 static void *grow_array(void *array, int elem_size, int *size, int new_size)
623 {
624     if (new_size >= INT_MAX / elem_size) {
625         fprintf(stderr, "Array too big.\n");
626         ffmpeg_exit(1);
627     }
628     if (*size < new_size) {
629         uint8_t *tmp = av_realloc(array, new_size*elem_size);
630         if (!tmp) {
631             fprintf(stderr, "Could not alloc buffer.\n");
632             ffmpeg_exit(1);
633         }
634         memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
635         *size = new_size;
636         return tmp;
637     }
638     return array;
639 }
640
641 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
642 {
643     if(codec && codec->sample_fmts){
644         const enum SampleFormat *p= codec->sample_fmts;
645         for(; *p!=-1; p++){
646             if(*p == st->codec->sample_fmt)
647                 break;
648         }
649         if(*p == -1)
650             st->codec->sample_fmt = codec->sample_fmts[0];
651     }
652 }
653
654 static void choose_sample_rate(AVStream *st, AVCodec *codec)
655 {
656     if(codec && codec->supported_samplerates){
657         const int *p= codec->supported_samplerates;
658         int best=0;
659         int best_dist=INT_MAX;
660         for(; *p; p++){
661             int dist= abs(st->codec->sample_rate - *p);
662             if(dist < best_dist){
663                 best_dist= dist;
664                 best= *p;
665             }
666         }
667         if(best_dist){
668             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
669         }
670         st->codec->sample_rate= best;
671     }
672 }
673
674 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
675 {
676     if(codec && codec->pix_fmts){
677         const enum PixelFormat *p= codec->pix_fmts;
678         for(; *p!=-1; p++){
679             if(*p == st->codec->pix_fmt)
680                 break;
681         }
682         if(*p == -1
683            && !(   st->codec->codec_id==CODEC_ID_MJPEG
684                 && st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL
685                 && (   st->codec->pix_fmt == PIX_FMT_YUV420P
686                     || st->codec->pix_fmt == PIX_FMT_YUV422P)))
687             st->codec->pix_fmt = codec->pix_fmts[0];
688     }
689 }
690
691 static int read_ffserver_streams(AVFormatContext *s, const char *filename)
692 {
693     int i, err;
694     AVFormatContext *ic;
695     int nopts = 0;
696
697     err = av_open_input_file(&ic, filename, NULL, FFM_PACKET_SIZE, NULL);
698     if (err < 0)
699         return err;
700     /* copy stream format */
701     s->nb_streams = ic->nb_streams;
702     for(i=0;i<ic->nb_streams;i++) {
703         AVStream *st;
704         AVCodec *codec;
705
706         // FIXME: a more elegant solution is needed
707         st = av_mallocz(sizeof(AVStream));
708         memcpy(st, ic->streams[i], sizeof(AVStream));
709         st->codec = avcodec_alloc_context();
710         if (!st->codec) {
711             print_error(filename, AVERROR(ENOMEM));
712             ffmpeg_exit(1);
713         }
714         avcodec_copy_context(st->codec, ic->streams[i]->codec);
715         s->streams[i] = st;
716
717         codec = avcodec_find_encoder(st->codec->codec_id);
718         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
719             if (audio_stream_copy) {
720                 st->stream_copy = 1;
721             } else
722                 choose_sample_fmt(st, codec);
723         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
724             if (video_stream_copy) {
725                 st->stream_copy = 1;
726             } else
727                 choose_pixel_fmt(st, codec);
728         }
729
730         if(!st->codec->thread_count)
731             st->codec->thread_count = 1;
732         if(st->codec->thread_count>1)
733             avcodec_thread_init(st->codec, st->codec->thread_count);
734
735         if(st->codec->flags & CODEC_FLAG_BITEXACT)
736             nopts = 1;
737     }
738
739     if (!nopts)
740         s->timestamp = av_gettime();
741
742     av_close_input_file(ic);
743     return 0;
744 }
745
746 static double
747 get_sync_ipts(const AVOutputStream *ost)
748 {
749     const AVInputStream *ist = ost->sync_ist;
750     return (double)(ist->pts - start_time)/AV_TIME_BASE;
751 }
752
753 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
754     int ret;
755
756     while(bsfc){
757         AVPacket new_pkt= *pkt;
758         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
759                                           &new_pkt.data, &new_pkt.size,
760                                           pkt->data, pkt->size,
761                                           pkt->flags & AV_PKT_FLAG_KEY);
762         if(a>0){
763             av_free_packet(pkt);
764             new_pkt.destruct= av_destruct_packet;
765         } else if(a<0){
766             fprintf(stderr, "%s failed for stream %d, codec %s",
767                     bsfc->filter->name, pkt->stream_index,
768                     avctx->codec ? avctx->codec->name : "copy");
769             print_error("", a);
770             if (exit_on_error)
771                 ffmpeg_exit(1);
772         }
773         *pkt= new_pkt;
774
775         bsfc= bsfc->next;
776     }
777
778     ret= av_interleaved_write_frame(s, pkt);
779     if(ret < 0){
780         print_error("av_interleaved_write_frame()", ret);
781         ffmpeg_exit(1);
782     }
783 }
784
785 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
786
787 static void do_audio_out(AVFormatContext *s,
788                          AVOutputStream *ost,
789                          AVInputStream *ist,
790                          unsigned char *buf, int size)
791 {
792     uint8_t *buftmp;
793     int64_t audio_out_size, audio_buf_size;
794     int64_t allocated_for_size= size;
795
796     int size_out, frame_bytes, ret;
797     AVCodecContext *enc= ost->st->codec;
798     AVCodecContext *dec= ist->st->codec;
799     int osize= av_get_bits_per_sample_format(enc->sample_fmt)/8;
800     int isize= av_get_bits_per_sample_format(dec->sample_fmt)/8;
801     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
802
803 need_realloc:
804     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
805     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
806     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
807     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
808     audio_buf_size*= osize*enc->channels;
809
810     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
811     if(coded_bps > 8*osize)
812         audio_out_size= audio_out_size * coded_bps / (8*osize);
813     audio_out_size += FF_MIN_BUFFER_SIZE;
814
815     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
816         fprintf(stderr, "Buffer sizes too large\n");
817         ffmpeg_exit(1);
818     }
819
820     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
821     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
822     if (!audio_buf || !audio_out){
823         fprintf(stderr, "Out of memory in do_audio_out\n");
824         ffmpeg_exit(1);
825     }
826
827     if (enc->channels != dec->channels)
828         ost->audio_resample = 1;
829
830     if (ost->audio_resample && !ost->resample) {
831         if (dec->sample_fmt != SAMPLE_FMT_S16)
832             fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
833         ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
834                                                enc->sample_rate, dec->sample_rate,
835                                                enc->sample_fmt,  dec->sample_fmt,
836                                                16, 10, 0, 0.8);
837         if (!ost->resample) {
838             fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
839                     dec->channels, dec->sample_rate,
840                     enc->channels, enc->sample_rate);
841             ffmpeg_exit(1);
842         }
843     }
844
845 #define MAKE_SFMT_PAIR(a,b) ((a)+SAMPLE_FMT_NB*(b))
846     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
847         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
848         if (ost->reformat_ctx)
849             av_audio_convert_free(ost->reformat_ctx);
850         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
851                                                    dec->sample_fmt, 1, NULL, 0);
852         if (!ost->reformat_ctx) {
853             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
854                 avcodec_get_sample_fmt_name(dec->sample_fmt),
855                 avcodec_get_sample_fmt_name(enc->sample_fmt));
856             ffmpeg_exit(1);
857         }
858         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
859     }
860
861     if(audio_sync_method){
862         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
863                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
864         double idelta= delta*dec->sample_rate / enc->sample_rate;
865         int byte_delta= ((int)idelta)*2*dec->channels;
866
867         //FIXME resample delay
868         if(fabs(delta) > 50){
869             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
870                 if(byte_delta < 0){
871                     byte_delta= FFMAX(byte_delta, -size);
872                     size += byte_delta;
873                     buf  -= byte_delta;
874                     if(verbose > 2)
875                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
876                     if(!size)
877                         return;
878                     ist->is_start=0;
879                 }else{
880                     static uint8_t *input_tmp= NULL;
881                     input_tmp= av_realloc(input_tmp, byte_delta + size);
882
883                     if(byte_delta > allocated_for_size - size){
884                         allocated_for_size= byte_delta + (int64_t)size;
885                         goto need_realloc;
886                     }
887                     ist->is_start=0;
888
889                     memset(input_tmp, 0, byte_delta);
890                     memcpy(input_tmp + byte_delta, buf, size);
891                     buf= input_tmp;
892                     size += byte_delta;
893                     if(verbose > 2)
894                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
895                 }
896             }else if(audio_sync_method>1){
897                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
898                 av_assert0(ost->audio_resample);
899                 if(verbose > 2)
900                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
901 //                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));
902                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
903             }
904         }
905     }else
906         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
907                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
908
909     if (ost->audio_resample) {
910         buftmp = audio_buf;
911         size_out = audio_resample(ost->resample,
912                                   (short *)buftmp, (short *)buf,
913                                   size / (dec->channels * isize));
914         size_out = size_out * enc->channels * osize;
915     } else {
916         buftmp = buf;
917         size_out = size;
918     }
919
920     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
921         const void *ibuf[6]= {buftmp};
922         void *obuf[6]= {audio_buf};
923         int istride[6]= {isize};
924         int ostride[6]= {osize};
925         int len= size_out/istride[0];
926         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
927             printf("av_audio_convert() failed\n");
928             if (exit_on_error)
929                 ffmpeg_exit(1);
930             return;
931         }
932         buftmp = audio_buf;
933         size_out = len*osize;
934     }
935
936     /* now encode as many frames as possible */
937     if (enc->frame_size > 1) {
938         /* output resampled raw samples */
939         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
940             fprintf(stderr, "av_fifo_realloc2() failed\n");
941             ffmpeg_exit(1);
942         }
943         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
944
945         frame_bytes = enc->frame_size * osize * enc->channels;
946
947         while (av_fifo_size(ost->fifo) >= frame_bytes) {
948             AVPacket pkt;
949             av_init_packet(&pkt);
950
951             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
952
953             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
954
955             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
956                                        (short *)audio_buf);
957             if (ret < 0) {
958                 fprintf(stderr, "Audio encoding failed\n");
959                 ffmpeg_exit(1);
960             }
961             audio_size += ret;
962             pkt.stream_index= ost->index;
963             pkt.data= audio_out;
964             pkt.size= ret;
965             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
966                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
967             pkt.flags |= AV_PKT_FLAG_KEY;
968             write_frame(s, &pkt, enc, ost->bitstream_filters);
969
970             ost->sync_opts += enc->frame_size;
971         }
972     } else {
973         AVPacket pkt;
974         av_init_packet(&pkt);
975
976         ost->sync_opts += size_out / (osize * enc->channels);
977
978         /* output a pcm frame */
979         /* determine the size of the coded buffer */
980         size_out /= osize;
981         if (coded_bps)
982             size_out = size_out*coded_bps/8;
983
984         if(size_out > audio_out_size){
985             fprintf(stderr, "Internal error, buffer size too small\n");
986             ffmpeg_exit(1);
987         }
988
989         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
990         ret = avcodec_encode_audio(enc, audio_out, size_out,
991                                    (short *)buftmp);
992         if (ret < 0) {
993             fprintf(stderr, "Audio encoding failed\n");
994             ffmpeg_exit(1);
995         }
996         audio_size += ret;
997         pkt.stream_index= ost->index;
998         pkt.data= audio_out;
999         pkt.size= ret;
1000         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1001             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1002         pkt.flags |= AV_PKT_FLAG_KEY;
1003         write_frame(s, &pkt, enc, ost->bitstream_filters);
1004     }
1005 }
1006
1007 static void pre_process_video_frame(AVInputStream *ist, AVPicture *picture, void **bufp)
1008 {
1009     AVCodecContext *dec;
1010     AVPicture *picture2;
1011     AVPicture picture_tmp;
1012     uint8_t *buf = 0;
1013
1014     dec = ist->st->codec;
1015
1016     /* deinterlace : must be done before any resize */
1017     if (do_deinterlace) {
1018         int size;
1019
1020         /* create temporary picture */
1021         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1022         buf = av_malloc(size);
1023         if (!buf)
1024             return;
1025
1026         picture2 = &picture_tmp;
1027         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1028
1029         if(avpicture_deinterlace(picture2, picture,
1030                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1031             /* if error, do not deinterlace */
1032             fprintf(stderr, "Deinterlacing failed\n");
1033             av_free(buf);
1034             buf = NULL;
1035             picture2 = picture;
1036         }
1037     } else {
1038         picture2 = picture;
1039     }
1040
1041     if (picture != picture2)
1042         *picture = *picture2;
1043     *bufp = buf;
1044 }
1045
1046 /* we begin to correct av delay at this threshold */
1047 #define AV_DELAY_MAX 0.100
1048
1049 static void do_subtitle_out(AVFormatContext *s,
1050                             AVOutputStream *ost,
1051                             AVInputStream *ist,
1052                             AVSubtitle *sub,
1053                             int64_t pts)
1054 {
1055     static uint8_t *subtitle_out = NULL;
1056     int subtitle_out_max_size = 1024 * 1024;
1057     int subtitle_out_size, nb, i;
1058     AVCodecContext *enc;
1059     AVPacket pkt;
1060
1061     if (pts == AV_NOPTS_VALUE) {
1062         fprintf(stderr, "Subtitle packets must have a pts\n");
1063         if (exit_on_error)
1064             ffmpeg_exit(1);
1065         return;
1066     }
1067
1068     enc = ost->st->codec;
1069
1070     if (!subtitle_out) {
1071         subtitle_out = av_malloc(subtitle_out_max_size);
1072     }
1073
1074     /* Note: DVB subtitle need one packet to draw them and one other
1075        packet to clear them */
1076     /* XXX: signal it in the codec context ? */
1077     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1078         nb = 2;
1079     else
1080         nb = 1;
1081
1082     for(i = 0; i < nb; i++) {
1083         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1084         // start_display_time is required to be 0
1085         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1086         sub->end_display_time -= sub->start_display_time;
1087         sub->start_display_time = 0;
1088         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1089                                                     subtitle_out_max_size, sub);
1090         if (subtitle_out_size < 0) {
1091             fprintf(stderr, "Subtitle encoding failed\n");
1092             ffmpeg_exit(1);
1093         }
1094
1095         av_init_packet(&pkt);
1096         pkt.stream_index = ost->index;
1097         pkt.data = subtitle_out;
1098         pkt.size = subtitle_out_size;
1099         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1100         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1101             /* XXX: the pts correction is handled here. Maybe handling
1102                it in the codec would be better */
1103             if (i == 0)
1104                 pkt.pts += 90 * sub->start_display_time;
1105             else
1106                 pkt.pts += 90 * sub->end_display_time;
1107         }
1108         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1109     }
1110 }
1111
1112 static int bit_buffer_size= 1024*256;
1113 static uint8_t *bit_buffer= NULL;
1114
1115 static void do_video_out(AVFormatContext *s,
1116                          AVOutputStream *ost,
1117                          AVInputStream *ist,
1118                          AVFrame *in_picture,
1119                          int *frame_size)
1120 {
1121     int nb_frames, i, ret;
1122 #if !CONFIG_AVFILTER
1123     int64_t topBand, bottomBand, leftBand, rightBand;
1124 #endif
1125     AVFrame *final_picture, *formatted_picture, *resampling_dst, *padding_src;
1126     AVFrame picture_crop_temp, picture_pad_temp;
1127     AVCodecContext *enc, *dec;
1128     double sync_ipts;
1129
1130     avcodec_get_frame_defaults(&picture_crop_temp);
1131     avcodec_get_frame_defaults(&picture_pad_temp);
1132
1133     enc = ost->st->codec;
1134     dec = ist->st->codec;
1135
1136     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1137
1138     /* by default, we output a single frame */
1139     nb_frames = 1;
1140
1141     *frame_size = 0;
1142
1143     if(video_sync_method){
1144         double vdelta = sync_ipts - ost->sync_opts;
1145         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1146         if (vdelta < -1.1)
1147             nb_frames = 0;
1148         else if (video_sync_method == 2 || (video_sync_method<0 && (s->oformat->flags & AVFMT_VARIABLE_FPS))){
1149             if(vdelta<=-0.6){
1150                 nb_frames=0;
1151             }else if(vdelta>0.6)
1152             ost->sync_opts= lrintf(sync_ipts);
1153         }else if (vdelta > 1.1)
1154             nb_frames = lrintf(vdelta);
1155 //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);
1156         if (nb_frames == 0){
1157             ++nb_frames_drop;
1158             if (verbose>2)
1159                 fprintf(stderr, "*** drop!\n");
1160         }else if (nb_frames > 1) {
1161             nb_frames_dup += nb_frames - 1;
1162             if (verbose>2)
1163                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1164         }
1165     }else
1166         ost->sync_opts= lrintf(sync_ipts);
1167
1168     nb_frames= FFMIN(nb_frames, max_frames[AVMEDIA_TYPE_VIDEO] - ost->frame_number);
1169     if (nb_frames <= 0)
1170         return;
1171
1172 #if CONFIG_AVFILTER
1173     formatted_picture = in_picture;
1174 #else
1175     if (ost->video_crop) {
1176         if (av_picture_crop((AVPicture *)&picture_crop_temp, (AVPicture *)in_picture, dec->pix_fmt, ost->topBand, ost->leftBand) < 0) {
1177             fprintf(stderr, "error cropping picture\n");
1178             if (exit_on_error)
1179                 ffmpeg_exit(1);
1180             return;
1181         }
1182         formatted_picture = &picture_crop_temp;
1183     } else {
1184         formatted_picture = in_picture;
1185     }
1186 #endif
1187
1188     final_picture = formatted_picture;
1189     padding_src = formatted_picture;
1190     resampling_dst = &ost->pict_tmp;
1191
1192     if(    (ost->resample_height != (ist->st->codec->height - (ost->topBand  + ost->bottomBand)))
1193         || (ost->resample_width  != (ist->st->codec->width  - (ost->leftBand + ost->rightBand)))
1194         || (ost->resample_pix_fmt!= ist->st->codec->pix_fmt) ) {
1195
1196         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));
1197         if(!ost->video_resample)
1198             ffmpeg_exit(1);
1199     }
1200
1201 #if !CONFIG_AVFILTER
1202     if (ost->video_resample) {
1203         padding_src = NULL;
1204         final_picture = &ost->pict_tmp;
1205         if(  (ost->resample_height != (ist->st->codec->height - (ost->topBand  + ost->bottomBand)))
1206           || (ost->resample_width  != (ist->st->codec->width  - (ost->leftBand + ost->rightBand)))
1207           || (ost->resample_pix_fmt!= ist->st->codec->pix_fmt) ) {
1208
1209             /* keep bands proportional to the frame size */
1210             topBand    = ((int64_t)ist->st->codec->height * ost->original_topBand    / ost->original_height) & ~1;
1211             bottomBand = ((int64_t)ist->st->codec->height * ost->original_bottomBand / ost->original_height) & ~1;
1212             leftBand   = ((int64_t)ist->st->codec->width  * ost->original_leftBand   / ost->original_width)  & ~1;
1213             rightBand  = ((int64_t)ist->st->codec->width  * ost->original_rightBand  / ost->original_width)  & ~1;
1214
1215             /* sanity check to ensure no bad band sizes sneak in */
1216             av_assert0(topBand    <= INT_MAX && topBand    >= 0);
1217             av_assert0(bottomBand <= INT_MAX && bottomBand >= 0);
1218             av_assert0(leftBand   <= INT_MAX && leftBand   >= 0);
1219             av_assert0(rightBand  <= INT_MAX && rightBand  >= 0);
1220
1221             ost->topBand    = topBand;
1222             ost->bottomBand = bottomBand;
1223             ost->leftBand   = leftBand;
1224             ost->rightBand  = rightBand;
1225
1226             ost->resample_height = ist->st->codec->height - (ost->topBand  + ost->bottomBand);
1227             ost->resample_width  = ist->st->codec->width  - (ost->leftBand + ost->rightBand);
1228             ost->resample_pix_fmt= ist->st->codec->pix_fmt;
1229
1230             /* initialize a new scaler context */
1231             sws_freeContext(ost->img_resample_ctx);
1232             sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
1233             ost->img_resample_ctx = sws_getContext(
1234                 ist->st->codec->width  - (ost->leftBand + ost->rightBand),
1235                 ist->st->codec->height - (ost->topBand  + ost->bottomBand),
1236                 ist->st->codec->pix_fmt,
1237                 ost->st->codec->width,
1238                 ost->st->codec->height,
1239                 ost->st->codec->pix_fmt,
1240                 sws_flags, NULL, NULL, NULL);
1241             if (ost->img_resample_ctx == NULL) {
1242                 fprintf(stderr, "Cannot get resampling context\n");
1243                 ffmpeg_exit(1);
1244             }
1245         }
1246         sws_scale(ost->img_resample_ctx, formatted_picture->data, formatted_picture->linesize,
1247               0, ost->resample_height, resampling_dst->data, resampling_dst->linesize);
1248     }
1249 #endif
1250
1251     /* duplicates frame if needed */
1252     for(i=0;i<nb_frames;i++) {
1253         AVPacket pkt;
1254         av_init_packet(&pkt);
1255         pkt.stream_index= ost->index;
1256
1257         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1258             /* raw pictures are written as AVPicture structure to
1259                avoid any copies. We support temorarily the older
1260                method. */
1261             AVFrame* old_frame = enc->coded_frame;
1262             enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
1263             pkt.data= (uint8_t *)final_picture;
1264             pkt.size=  sizeof(AVPicture);
1265             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1266             pkt.flags |= AV_PKT_FLAG_KEY;
1267
1268             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1269             enc->coded_frame = old_frame;
1270         } else {
1271             AVFrame big_picture;
1272
1273             big_picture= *final_picture;
1274             /* better than nothing: use input picture interlaced
1275                settings */
1276             big_picture.interlaced_frame = in_picture->interlaced_frame;
1277             if(avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)){
1278                 if(top_field_first == -1)
1279                     big_picture.top_field_first = in_picture->top_field_first;
1280                 else
1281                     big_picture.top_field_first = top_field_first;
1282             }
1283
1284             /* handles sameq here. This is not correct because it may
1285                not be a global option */
1286             big_picture.quality = same_quality ? ist->st->quality : ost->st->quality;
1287             if(!me_threshold)
1288                 big_picture.pict_type = 0;
1289 //            big_picture.pts = AV_NOPTS_VALUE;
1290             big_picture.pts= ost->sync_opts;
1291 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1292 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1293             ret = avcodec_encode_video(enc,
1294                                        bit_buffer, bit_buffer_size,
1295                                        &big_picture);
1296             if (ret < 0) {
1297                 fprintf(stderr, "Video encoding failed\n");
1298                 ffmpeg_exit(1);
1299             }
1300
1301             if(ret>0){
1302                 pkt.data= bit_buffer;
1303                 pkt.size= ret;
1304                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1305                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1306 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1307    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1308    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1309
1310                 if(enc->coded_frame->key_frame)
1311                     pkt.flags |= AV_PKT_FLAG_KEY;
1312                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1313                 *frame_size = ret;
1314                 video_size += ret;
1315                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1316                 //        enc->frame_number-1, ret, enc->pict_type);
1317                 /* if two pass, output log */
1318                 if (ost->logfile && enc->stats_out) {
1319                     fprintf(ost->logfile, "%s", enc->stats_out);
1320                 }
1321             }
1322         }
1323         ost->sync_opts++;
1324         ost->frame_number++;
1325     }
1326 }
1327
1328 static double psnr(double d){
1329     return -10.0*log(d)/log(10.0);
1330 }
1331
1332 static void do_video_stats(AVFormatContext *os, AVOutputStream *ost,
1333                            int frame_size)
1334 {
1335     AVCodecContext *enc;
1336     int frame_number;
1337     double ti1, bitrate, avg_bitrate;
1338
1339     /* this is executed just the first time do_video_stats is called */
1340     if (!vstats_file) {
1341         vstats_file = fopen(vstats_filename, "w");
1342         if (!vstats_file) {
1343             perror("fopen");
1344             ffmpeg_exit(1);
1345         }
1346     }
1347
1348     enc = ost->st->codec;
1349     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1350         frame_number = ost->frame_number;
1351         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1352         if (enc->flags&CODEC_FLAG_PSNR)
1353             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1354
1355         fprintf(vstats_file,"f_size= %6d ", frame_size);
1356         /* compute pts value */
1357         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1358         if (ti1 < 0.01)
1359             ti1 = 0.01;
1360
1361         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1362         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1363         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1364             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1365         fprintf(vstats_file,"type= %c\n", av_get_pict_type_char(enc->coded_frame->pict_type));
1366     }
1367 }
1368
1369 static void print_report(AVFormatContext **output_files,
1370                          AVOutputStream **ost_table, int nb_ostreams,
1371                          int is_last_report)
1372 {
1373     char buf[1024];
1374     AVOutputStream *ost;
1375     AVFormatContext *oc;
1376     int64_t total_size;
1377     AVCodecContext *enc;
1378     int frame_number, vid, i;
1379     double bitrate, ti1, pts;
1380     static int64_t last_time = -1;
1381     static int qp_histogram[52];
1382
1383     if (!is_last_report) {
1384         int64_t cur_time;
1385         /* display the report every 0.5 seconds */
1386         cur_time = av_gettime();
1387         if (last_time == -1) {
1388             last_time = cur_time;
1389             return;
1390         }
1391         if ((cur_time - last_time) < 500000)
1392             return;
1393         last_time = cur_time;
1394     }
1395
1396
1397     oc = output_files[0];
1398
1399     total_size = url_fsize(oc->pb);
1400     if(total_size<0) // FIXME improve url_fsize() so it works with non seekable output too
1401         total_size= url_ftell(oc->pb);
1402
1403     buf[0] = '\0';
1404     ti1 = 1e10;
1405     vid = 0;
1406     for(i=0;i<nb_ostreams;i++) {
1407         ost = ost_table[i];
1408         enc = ost->st->codec;
1409         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1410             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ",
1411                      !ost->st->stream_copy ?
1412                      enc->coded_frame->quality/(float)FF_QP2LAMBDA : -1);
1413         }
1414         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1415             float t = (av_gettime()-timer_start) / 1000000.0;
1416
1417             frame_number = ost->frame_number;
1418             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1419                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0,
1420                      !ost->st->stream_copy ?
1421                      enc->coded_frame->quality/(float)FF_QP2LAMBDA : -1);
1422             if(is_last_report)
1423                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1424             if(qp_hist){
1425                 int j;
1426                 int qp= lrintf(enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1427                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1428                     qp_histogram[qp]++;
1429                 for(j=0; j<32; j++)
1430                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1431             }
1432             if (enc->flags&CODEC_FLAG_PSNR){
1433                 int j;
1434                 double error, error_sum=0;
1435                 double scale, scale_sum=0;
1436                 char type[3]= {'Y','U','V'};
1437                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1438                 for(j=0; j<3; j++){
1439                     if(is_last_report){
1440                         error= enc->error[j];
1441                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1442                     }else{
1443                         error= enc->coded_frame->error[j];
1444                         scale= enc->width*enc->height*255.0*255.0;
1445                     }
1446                     if(j) scale/=4;
1447                     error_sum += error;
1448                     scale_sum += scale;
1449                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1450                 }
1451                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1452             }
1453             vid = 1;
1454         }
1455         /* compute min output value */
1456         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1457         if ((pts < ti1) && (pts > 0))
1458             ti1 = pts;
1459     }
1460     if (ti1 < 0.01)
1461         ti1 = 0.01;
1462
1463     if (verbose || is_last_report) {
1464         bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1465
1466         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1467             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1468             (double)total_size / 1024, ti1, bitrate);
1469
1470         if (nb_frames_dup || nb_frames_drop)
1471           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1472                   nb_frames_dup, nb_frames_drop);
1473
1474         if (verbose >= 0)
1475             fprintf(stderr, "%s    \r", buf);
1476
1477         fflush(stderr);
1478     }
1479
1480     if (is_last_report && verbose >= 0){
1481         int64_t raw= audio_size + video_size + extra_size;
1482         fprintf(stderr, "\n");
1483         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1484                 video_size/1024.0,
1485                 audio_size/1024.0,
1486                 extra_size/1024.0,
1487                 100.0*(total_size - raw)/raw
1488         );
1489     }
1490 }
1491
1492 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1493 static int output_packet(AVInputStream *ist, int ist_index,
1494                          AVOutputStream **ost_table, int nb_ostreams,
1495                          const AVPacket *pkt)
1496 {
1497     AVFormatContext *os;
1498     AVOutputStream *ost;
1499     int ret, i;
1500     int got_picture;
1501     AVFrame picture;
1502     void *buffer_to_free;
1503     static unsigned int samples_size= 0;
1504     AVSubtitle subtitle, *subtitle_to_free;
1505     int64_t pkt_pts = AV_NOPTS_VALUE;
1506 #if CONFIG_AVFILTER
1507     int frame_available;
1508 #endif
1509
1510     AVPacket avpkt;
1511     int bps = av_get_bits_per_sample_format(ist->st->codec->sample_fmt)>>3;
1512
1513     if(ist->next_pts == AV_NOPTS_VALUE)
1514         ist->next_pts= ist->pts;
1515
1516     if (pkt == NULL) {
1517         /* EOF handling */
1518         av_init_packet(&avpkt);
1519         avpkt.data = NULL;
1520         avpkt.size = 0;
1521         goto handle_eof;
1522     } else {
1523         avpkt = *pkt;
1524     }
1525
1526     if(pkt->dts != AV_NOPTS_VALUE)
1527         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1528     if(pkt->pts != AV_NOPTS_VALUE)
1529         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1530
1531     //while we have more to decode or while the decoder did output something on EOF
1532     while (avpkt.size > 0 || (!pkt && ist->next_pts != ist->pts)) {
1533         uint8_t *data_buf, *decoded_data_buf;
1534         int data_size, decoded_data_size;
1535     handle_eof:
1536         ist->pts= ist->next_pts;
1537
1538         if(avpkt.size && avpkt.size != pkt->size &&
1539            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1540             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1541             ist->showed_multi_packet_warning=1;
1542         }
1543
1544         /* decode the packet if needed */
1545         decoded_data_buf = NULL; /* fail safe */
1546         decoded_data_size= 0;
1547         data_buf  = avpkt.data;
1548         data_size = avpkt.size;
1549         subtitle_to_free = NULL;
1550         if (ist->decoding_needed) {
1551             switch(ist->st->codec->codec_type) {
1552             case AVMEDIA_TYPE_AUDIO:{
1553                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1554                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1555                     av_free(samples);
1556                     samples= av_malloc(samples_size);
1557                 }
1558                 decoded_data_size= samples_size;
1559                     /* XXX: could avoid copy if PCM 16 bits with same
1560                        endianness as CPU */
1561                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1562                                             &avpkt);
1563                 if (ret < 0)
1564                     goto fail_decode;
1565                 avpkt.data += ret;
1566                 avpkt.size -= ret;
1567                 data_size   = ret;
1568                 /* Some bug in mpeg audio decoder gives */
1569                 /* decoded_data_size < 0, it seems they are overflows */
1570                 if (decoded_data_size <= 0) {
1571                     /* no audio frame */
1572                     continue;
1573                 }
1574                 decoded_data_buf = (uint8_t *)samples;
1575                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1576                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1577                 break;}
1578             case AVMEDIA_TYPE_VIDEO:
1579                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1580                     /* XXX: allocate picture correctly */
1581                     avcodec_get_frame_defaults(&picture);
1582                     ist->st->codec->reordered_opaque = pkt_pts;
1583                     pkt_pts = AV_NOPTS_VALUE;
1584
1585                     ret = avcodec_decode_video2(ist->st->codec,
1586                                                 &picture, &got_picture, &avpkt);
1587                     ist->st->quality= picture.quality;
1588                     if (ret < 0)
1589                         goto fail_decode;
1590                     if (!got_picture) {
1591                         /* no picture yet */
1592                         goto discard_packet;
1593                     }
1594                     ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, picture.reordered_opaque, ist->pts);
1595                     if (ist->st->codec->time_base.num != 0) {
1596                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1597                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1598                                           ist->st->codec->time_base.num * ticks) /
1599                             ist->st->codec->time_base.den;
1600                     }
1601                     avpkt.size = 0;
1602                     break;
1603             case AVMEDIA_TYPE_SUBTITLE:
1604                 ret = avcodec_decode_subtitle2(ist->st->codec,
1605                                                &subtitle, &got_picture, &avpkt);
1606                 if (ret < 0)
1607                     goto fail_decode;
1608                 if (!got_picture) {
1609                     goto discard_packet;
1610                 }
1611                 subtitle_to_free = &subtitle;
1612                 avpkt.size = 0;
1613                 break;
1614             default:
1615                 goto fail_decode;
1616             }
1617         } else {
1618             switch(ist->st->codec->codec_type) {
1619             case AVMEDIA_TYPE_AUDIO:
1620                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1621                     ist->st->codec->sample_rate;
1622                 break;
1623             case AVMEDIA_TYPE_VIDEO:
1624                 if (ist->st->codec->time_base.num != 0) {
1625                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1626                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1627                                       ist->st->codec->time_base.num * ticks) /
1628                         ist->st->codec->time_base.den;
1629                 }
1630                 break;
1631             }
1632             ret = avpkt.size;
1633             avpkt.size = 0;
1634         }
1635
1636         buffer_to_free = NULL;
1637         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1638             pre_process_video_frame(ist, (AVPicture *)&picture,
1639                                     &buffer_to_free);
1640         }
1641
1642 #if CONFIG_AVFILTER
1643         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ist->input_video_filter) {
1644             // add it to be filtered
1645             av_vsrc_buffer_add_frame(ist->input_video_filter, &picture,
1646                                      ist->pts,
1647                                      ist->st->codec->sample_aspect_ratio);
1648         }
1649 #endif
1650
1651         // preprocess audio (volume)
1652         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1653             if (audio_volume != 256) {
1654                 short *volp;
1655                 volp = samples;
1656                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1657                     int v = ((*volp) * audio_volume + 128) >> 8;
1658                     if (v < -32768) v = -32768;
1659                     if (v >  32767) v = 32767;
1660                     *volp++ = v;
1661                 }
1662             }
1663         }
1664
1665         /* frame rate emulation */
1666         if (rate_emu) {
1667             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1668             int64_t now = av_gettime() - ist->start;
1669             if (pts > now)
1670                 usleep(pts - now);
1671         }
1672 #if CONFIG_AVFILTER
1673         frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1674             !ist->output_video_filter || avfilter_poll_frame(ist->output_video_filter->inputs[0]);
1675 #endif
1676         /* if output time reached then transcode raw format,
1677            encode packets and output them */
1678         if (start_time == 0 || ist->pts >= start_time)
1679 #if CONFIG_AVFILTER
1680         while (frame_available) {
1681             if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ist->output_video_filter)
1682                 get_filtered_video_pic(ist->output_video_filter, &ist->picref, &picture, &ist->pts);
1683 #endif
1684             for(i=0;i<nb_ostreams;i++) {
1685                 int frame_size;
1686
1687                 ost = ost_table[i];
1688                 if (ost->source_index == ist_index) {
1689                     os = output_files[ost->file_index];
1690
1691                     /* set the input output pts pairs */
1692                     //ost->sync_ipts = (double)(ist->pts + input_files_ts_offset[ist->file_index] - start_time)/ AV_TIME_BASE;
1693
1694                     if (ost->encoding_needed) {
1695                         av_assert0(ist->decoding_needed);
1696                         switch(ost->st->codec->codec_type) {
1697                         case AVMEDIA_TYPE_AUDIO:
1698                             do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1699                             break;
1700                         case AVMEDIA_TYPE_VIDEO:
1701 #if CONFIG_AVFILTER
1702                             if (ist->picref->video)
1703                                 ost->st->codec->sample_aspect_ratio = ist->picref->video->pixel_aspect;
1704 #endif
1705                             do_video_out(os, ost, ist, &picture, &frame_size);
1706                             if (vstats_filename && frame_size)
1707                                 do_video_stats(os, ost, frame_size);
1708                             break;
1709                         case AVMEDIA_TYPE_SUBTITLE:
1710                             do_subtitle_out(os, ost, ist, &subtitle,
1711                                             pkt->pts);
1712                             break;
1713                         default:
1714                             abort();
1715                         }
1716                     } else {
1717                         AVFrame avframe; //FIXME/XXX remove this
1718                         AVPacket opkt;
1719                         int64_t ost_tb_start_time= av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1720
1721                         av_init_packet(&opkt);
1722
1723                         if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1724                             continue;
1725
1726                         /* no reencoding needed : output the packet directly */
1727                         /* force the input stream PTS */
1728
1729                         avcodec_get_frame_defaults(&avframe);
1730                         ost->st->codec->coded_frame= &avframe;
1731                         avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1732
1733                         if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1734                             audio_size += data_size;
1735                         else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1736                             video_size += data_size;
1737                             ost->sync_opts++;
1738                         }
1739
1740                         opkt.stream_index= ost->index;
1741                         if(pkt->pts != AV_NOPTS_VALUE)
1742                             opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1743                         else
1744                             opkt.pts= AV_NOPTS_VALUE;
1745
1746                         if (pkt->dts == AV_NOPTS_VALUE)
1747                             opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1748                         else
1749                             opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1750                         opkt.dts -= ost_tb_start_time;
1751
1752                         opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1753                         opkt.flags= pkt->flags;
1754
1755                         //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1756                         if(   ost->st->codec->codec_id != CODEC_ID_H264
1757                            && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1758                            && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1759                            ) {
1760                             if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1761                                 opkt.destruct= av_destruct_packet;
1762                         } else {
1763                             opkt.data = data_buf;
1764                             opkt.size = data_size;
1765                         }
1766
1767                         write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1768                         ost->st->codec->frame_number++;
1769                         ost->frame_number++;
1770                         av_free_packet(&opkt);
1771                     }
1772                 }
1773             }
1774
1775 #if CONFIG_AVFILTER
1776             frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1777                               ist->output_video_filter && avfilter_poll_frame(ist->output_video_filter->inputs[0]);
1778             if(ist->picref)
1779                 avfilter_unref_buffer(ist->picref);
1780         }
1781 #endif
1782         av_free(buffer_to_free);
1783         /* XXX: allocate the subtitles in the codec ? */
1784         if (subtitle_to_free) {
1785             if (subtitle_to_free->rects != NULL) {
1786                 for (i = 0; i < subtitle_to_free->num_rects; i++) {
1787                     av_freep(&subtitle_to_free->rects[i]->pict.data[0]);
1788                     av_freep(&subtitle_to_free->rects[i]->pict.data[1]);
1789                     av_freep(&subtitle_to_free->rects[i]);
1790                 }
1791                 av_freep(&subtitle_to_free->rects);
1792             }
1793             subtitle_to_free->num_rects = 0;
1794             subtitle_to_free = NULL;
1795         }
1796     }
1797  discard_packet:
1798     if (pkt == NULL) {
1799         /* EOF handling */
1800
1801         for(i=0;i<nb_ostreams;i++) {
1802             ost = ost_table[i];
1803             if (ost->source_index == ist_index) {
1804                 AVCodecContext *enc= ost->st->codec;
1805                 os = output_files[ost->file_index];
1806
1807                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1808                     continue;
1809                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1810                     continue;
1811
1812                 if (ost->encoding_needed) {
1813                     for(;;) {
1814                         AVPacket pkt;
1815                         int fifo_bytes;
1816                         av_init_packet(&pkt);
1817                         pkt.stream_index= ost->index;
1818
1819                         switch(ost->st->codec->codec_type) {
1820                         case AVMEDIA_TYPE_AUDIO:
1821                             fifo_bytes = av_fifo_size(ost->fifo);
1822                             ret = 0;
1823                             /* encode any samples remaining in fifo */
1824                             if (fifo_bytes > 0) {
1825                                 int osize = av_get_bits_per_sample_format(enc->sample_fmt) >> 3;
1826                                 int fs_tmp = enc->frame_size;
1827
1828                                 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1829                                 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1830                                     enc->frame_size = fifo_bytes / (osize * enc->channels);
1831                                 } else { /* pad */
1832                                     int frame_bytes = enc->frame_size*osize*enc->channels;
1833                                     if (allocated_audio_buf_size < frame_bytes)
1834                                         ffmpeg_exit(1);
1835                                     memset(audio_buf+fifo_bytes, 0, frame_bytes - fifo_bytes);
1836                                 }
1837
1838                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1839                                 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1840                                                           ost->st->time_base.num, enc->sample_rate);
1841                                 enc->frame_size = fs_tmp;
1842                             }
1843                             if(ret <= 0) {
1844                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1845                             }
1846                             if (ret < 0) {
1847                                 fprintf(stderr, "Audio encoding failed\n");
1848                                 ffmpeg_exit(1);
1849                             }
1850                             audio_size += ret;
1851                             pkt.flags |= AV_PKT_FLAG_KEY;
1852                             break;
1853                         case AVMEDIA_TYPE_VIDEO:
1854                             ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1855                             if (ret < 0) {
1856                                 fprintf(stderr, "Video encoding failed\n");
1857                                 ffmpeg_exit(1);
1858                             }
1859                             video_size += ret;
1860                             if(enc->coded_frame && enc->coded_frame->key_frame)
1861                                 pkt.flags |= AV_PKT_FLAG_KEY;
1862                             if (ost->logfile && enc->stats_out) {
1863                                 fprintf(ost->logfile, "%s", enc->stats_out);
1864                             }
1865                             break;
1866                         default:
1867                             ret=-1;
1868                         }
1869
1870                         if(ret<=0)
1871                             break;
1872                         pkt.data= bit_buffer;
1873                         pkt.size= ret;
1874                         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1875                             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1876                         write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1877                     }
1878                 }
1879             }
1880         }
1881     }
1882
1883     return 0;
1884  fail_decode:
1885     return -1;
1886 }
1887
1888 static void print_sdp(AVFormatContext **avc, int n)
1889 {
1890     char sdp[2048];
1891
1892     avf_sdp_create(avc, n, sdp, sizeof(sdp));
1893     printf("SDP:\n%s\n", sdp);
1894     fflush(stdout);
1895 }
1896
1897 static int copy_chapters(int infile, int outfile)
1898 {
1899     AVFormatContext *is = input_files[infile];
1900     AVFormatContext *os = output_files[outfile];
1901     int i;
1902
1903     for (i = 0; i < is->nb_chapters; i++) {
1904         AVChapter *in_ch = is->chapters[i], *out_ch;
1905         AVMetadataTag *t = NULL;
1906         int64_t ts_off   = av_rescale_q(start_time - input_files_ts_offset[infile],
1907                                       AV_TIME_BASE_Q, in_ch->time_base);
1908         int64_t rt       = (recording_time == INT64_MAX) ? INT64_MAX :
1909                            av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
1910
1911
1912         if (in_ch->end < ts_off)
1913             continue;
1914         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
1915             break;
1916
1917         out_ch = av_mallocz(sizeof(AVChapter));
1918         if (!out_ch)
1919             return AVERROR(ENOMEM);
1920
1921         out_ch->id        = in_ch->id;
1922         out_ch->time_base = in_ch->time_base;
1923         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
1924         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
1925
1926         while ((t = av_metadata_get(in_ch->metadata, "", t, AV_METADATA_IGNORE_SUFFIX)))
1927             av_metadata_set2(&out_ch->metadata, t->key, t->value, 0);
1928
1929         os->nb_chapters++;
1930         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
1931         if (!os->chapters)
1932             return AVERROR(ENOMEM);
1933         os->chapters[os->nb_chapters - 1] = out_ch;
1934     }
1935     return 0;
1936 }
1937
1938 /*
1939  * The following code is the main loop of the file converter
1940  */
1941 static int transcode(AVFormatContext **output_files,
1942                      int nb_output_files,
1943                      AVFormatContext **input_files,
1944                      int nb_input_files,
1945                      AVStreamMap *stream_maps, int nb_stream_maps)
1946 {
1947     int ret = 0, i, j, k, n, nb_istreams = 0, nb_ostreams = 0;
1948     AVFormatContext *is, *os;
1949     AVCodecContext *codec, *icodec;
1950     AVOutputStream *ost, **ost_table = NULL;
1951     AVInputStream *ist, **ist_table = NULL;
1952     AVInputFile *file_table;
1953     char error[1024];
1954     int key;
1955     int want_sdp = 1;
1956     uint8_t no_packet[MAX_FILES]={0};
1957     int no_packet_count=0;
1958
1959     file_table= av_mallocz(nb_input_files * sizeof(AVInputFile));
1960     if (!file_table)
1961         goto fail;
1962
1963     /* input stream init */
1964     j = 0;
1965     for(i=0;i<nb_input_files;i++) {
1966         is = input_files[i];
1967         file_table[i].ist_index = j;
1968         file_table[i].nb_streams = is->nb_streams;
1969         j += is->nb_streams;
1970     }
1971     nb_istreams = j;
1972
1973     ist_table = av_mallocz(nb_istreams * sizeof(AVInputStream *));
1974     if (!ist_table)
1975         goto fail;
1976
1977     for(i=0;i<nb_istreams;i++) {
1978         ist = av_mallocz(sizeof(AVInputStream));
1979         if (!ist)
1980             goto fail;
1981         ist_table[i] = ist;
1982     }
1983     j = 0;
1984     for(i=0;i<nb_input_files;i++) {
1985         is = input_files[i];
1986         for(k=0;k<is->nb_streams;k++) {
1987             ist = ist_table[j++];
1988             ist->st = is->streams[k];
1989             ist->file_index = i;
1990             ist->index = k;
1991             ist->discard = 1; /* the stream is discarded by default
1992                                  (changed later) */
1993
1994             if (rate_emu) {
1995                 ist->start = av_gettime();
1996             }
1997         }
1998     }
1999
2000     /* output stream init */
2001     nb_ostreams = 0;
2002     for(i=0;i<nb_output_files;i++) {
2003         os = output_files[i];
2004         if (!os->nb_streams) {
2005             dump_format(output_files[i], i, output_files[i]->filename, 1);
2006             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
2007             ret = AVERROR(EINVAL);
2008             goto fail;
2009         }
2010         nb_ostreams += os->nb_streams;
2011     }
2012     if (nb_stream_maps > 0 && nb_stream_maps != nb_ostreams) {
2013         fprintf(stderr, "Number of stream maps must match number of output streams\n");
2014         ret = AVERROR(EINVAL);
2015         goto fail;
2016     }
2017
2018     /* Sanity check the mapping args -- do the input files & streams exist? */
2019     for(i=0;i<nb_stream_maps;i++) {
2020         int fi = stream_maps[i].file_index;
2021         int si = stream_maps[i].stream_index;
2022
2023         if (fi < 0 || fi > nb_input_files - 1 ||
2024             si < 0 || si > file_table[fi].nb_streams - 1) {
2025             fprintf(stderr,"Could not find input stream #%d.%d\n", fi, si);
2026             ret = AVERROR(EINVAL);
2027             goto fail;
2028         }
2029         fi = stream_maps[i].sync_file_index;
2030         si = stream_maps[i].sync_stream_index;
2031         if (fi < 0 || fi > nb_input_files - 1 ||
2032             si < 0 || si > file_table[fi].nb_streams - 1) {
2033             fprintf(stderr,"Could not find sync stream #%d.%d\n", fi, si);
2034             ret = AVERROR(EINVAL);
2035             goto fail;
2036         }
2037     }
2038
2039     ost_table = av_mallocz(sizeof(AVOutputStream *) * nb_ostreams);
2040     if (!ost_table)
2041         goto fail;
2042     n = 0;
2043     for(k=0;k<nb_output_files;k++) {
2044         os = output_files[k];
2045         for(i=0;i<os->nb_streams;i++,n++) {
2046             int found;
2047             ost = ost_table[n] = output_streams_for_file[k][i];
2048             ost->st = os->streams[i];
2049             if (nb_stream_maps > 0) {
2050                 ost->source_index = file_table[stream_maps[n].file_index].ist_index +
2051                     stream_maps[n].stream_index;
2052
2053                 /* Sanity check that the stream types match */
2054                 if (ist_table[ost->source_index]->st->codec->codec_type != ost->st->codec->codec_type) {
2055                     int i= ost->file_index;
2056                     dump_format(output_files[i], i, output_files[i]->filename, 1);
2057                     fprintf(stderr, "Codec type mismatch for mapping #%d.%d -> #%d.%d\n",
2058                         stream_maps[n].file_index, stream_maps[n].stream_index,
2059                         ost->file_index, ost->index);
2060                     ffmpeg_exit(1);
2061                 }
2062
2063             } else {
2064                 int best_nb_frames=-1;
2065                 /* get corresponding input stream index : we select the first one with the right type */
2066                 found = 0;
2067                 for(j=0;j<nb_istreams;j++) {
2068                     int skip=0;
2069                     ist = ist_table[j];
2070                     if(opt_programid){
2071                         int pi,si;
2072                         AVFormatContext *f= input_files[ ist->file_index ];
2073                         skip=1;
2074                         for(pi=0; pi<f->nb_programs; pi++){
2075                             AVProgram *p= f->programs[pi];
2076                             if(p->id == opt_programid)
2077                                 for(si=0; si<p->nb_stream_indexes; si++){
2078                                     if(f->streams[ p->stream_index[si] ] == ist->st)
2079                                         skip=0;
2080                                 }
2081                         }
2082                     }
2083                     if (ist->discard && ist->st->discard != AVDISCARD_ALL && !skip &&
2084                         ist->st->codec->codec_type == ost->st->codec->codec_type) {
2085                         if(best_nb_frames < ist->st->codec_info_nb_frames){
2086                             best_nb_frames= ist->st->codec_info_nb_frames;
2087                             ost->source_index = j;
2088                             found = 1;
2089                         }
2090                     }
2091                 }
2092
2093                 if (!found) {
2094                     if(! opt_programid) {
2095                         /* try again and reuse existing stream */
2096                         for(j=0;j<nb_istreams;j++) {
2097                             ist = ist_table[j];
2098                             if (   ist->st->codec->codec_type == ost->st->codec->codec_type
2099                                 && ist->st->discard != AVDISCARD_ALL) {
2100                                 ost->source_index = j;
2101                                 found = 1;
2102                             }
2103                         }
2104                     }
2105                     if (!found) {
2106                         int i= ost->file_index;
2107                         dump_format(output_files[i], i, output_files[i]->filename, 1);
2108                         fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",
2109                                 ost->file_index, ost->index);
2110                         ffmpeg_exit(1);
2111                     }
2112                 }
2113             }
2114             ist = ist_table[ost->source_index];
2115             ist->discard = 0;
2116             ost->sync_ist = (nb_stream_maps > 0) ?
2117                 ist_table[file_table[stream_maps[n].sync_file_index].ist_index +
2118                          stream_maps[n].sync_stream_index] : ist;
2119         }
2120     }
2121
2122     /* for each output stream, we compute the right encoding parameters */
2123     for(i=0;i<nb_ostreams;i++) {
2124         AVMetadataTag *t = NULL;
2125         ost = ost_table[i];
2126         os = output_files[ost->file_index];
2127         ist = ist_table[ost->source_index];
2128
2129         codec = ost->st->codec;
2130         icodec = ist->st->codec;
2131
2132         while ((t = av_metadata_get(ist->st->metadata, "", t, AV_METADATA_IGNORE_SUFFIX))) {
2133             av_metadata_set2(&ost->st->metadata, t->key, t->value, AV_METADATA_DONT_OVERWRITE);
2134         }
2135
2136         ost->st->disposition = ist->st->disposition;
2137         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2138         codec->chroma_sample_location = icodec->chroma_sample_location;
2139
2140         if (ost->st->stream_copy) {
2141             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2142
2143             if (extra_size > INT_MAX)
2144                 goto fail;
2145
2146             /* if stream_copy is selected, no need to decode or encode */
2147             codec->codec_id = icodec->codec_id;
2148             codec->codec_type = icodec->codec_type;
2149
2150             if(!codec->codec_tag){
2151                 if(   !os->oformat->codec_tag
2152                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2153                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2154                     codec->codec_tag = icodec->codec_tag;
2155             }
2156
2157             codec->bit_rate = icodec->bit_rate;
2158             codec->rc_max_rate    = icodec->rc_max_rate;
2159             codec->rc_buffer_size = icodec->rc_buffer_size;
2160             codec->extradata= av_mallocz(extra_size);
2161             if (!codec->extradata)
2162                 goto fail;
2163             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2164             codec->extradata_size= icodec->extradata_size;
2165             if(av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base) && av_q2d(ist->st->time_base) < 1.0/1000){
2166                 codec->time_base = icodec->time_base;
2167                 codec->time_base.num *= icodec->ticks_per_frame;
2168                 av_reduce(&codec->time_base.num, &codec->time_base.den,
2169                           codec->time_base.num, codec->time_base.den, INT_MAX);
2170             }else
2171                 codec->time_base = ist->st->time_base;
2172             switch(codec->codec_type) {
2173             case AVMEDIA_TYPE_AUDIO:
2174                 if(audio_volume != 256) {
2175                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2176                     ffmpeg_exit(1);
2177                 }
2178                 codec->channel_layout = icodec->channel_layout;
2179                 codec->sample_rate = icodec->sample_rate;
2180                 codec->channels = icodec->channels;
2181                 codec->frame_size = icodec->frame_size;
2182                 codec->block_align= icodec->block_align;
2183                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2184                     codec->block_align= 0;
2185                 if(codec->codec_id == CODEC_ID_AC3)
2186                     codec->block_align= 0;
2187                 break;
2188             case AVMEDIA_TYPE_VIDEO:
2189                 codec->pix_fmt = icodec->pix_fmt;
2190                 codec->width = icodec->width;
2191                 codec->height = icodec->height;
2192                 codec->has_b_frames = icodec->has_b_frames;
2193                 break;
2194             case AVMEDIA_TYPE_SUBTITLE:
2195                 codec->width = icodec->width;
2196                 codec->height = icodec->height;
2197                 break;
2198             default:
2199                 abort();
2200             }
2201         } else {
2202             switch(codec->codec_type) {
2203             case AVMEDIA_TYPE_AUDIO:
2204                 ost->fifo= av_fifo_alloc(1024);
2205                 if(!ost->fifo)
2206                     goto fail;
2207                 ost->reformat_pair = MAKE_SFMT_PAIR(SAMPLE_FMT_NONE,SAMPLE_FMT_NONE);
2208                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2209                 icodec->request_channels = codec->channels;
2210                 ist->decoding_needed = 1;
2211                 ost->encoding_needed = 1;
2212                 break;
2213             case AVMEDIA_TYPE_VIDEO:
2214                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2215                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2216                     ffmpeg_exit(1);
2217                 }
2218                 ost->video_crop = ((frame_leftBand + frame_rightBand + frame_topBand + frame_bottomBand) != 0);
2219                 ost->video_resample = ((codec->width != icodec->width -
2220                                 (frame_leftBand + frame_rightBand)) ||
2221                         (codec->height != icodec->height -
2222                                 (frame_topBand  + frame_bottomBand)) ||
2223                         (codec->pix_fmt != icodec->pix_fmt));
2224                 if (ost->video_crop) {
2225                     ost->topBand    = ost->original_topBand    = frame_topBand;
2226                     ost->bottomBand = ost->original_bottomBand = frame_bottomBand;
2227                     ost->leftBand   = ost->original_leftBand   = frame_leftBand;
2228                     ost->rightBand  = ost->original_rightBand  = frame_rightBand;
2229                 }
2230                 if (ost->video_resample) {
2231                     avcodec_get_frame_defaults(&ost->pict_tmp);
2232                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2233                                          codec->width, codec->height)) {
2234                         fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
2235                         ffmpeg_exit(1);
2236                     }
2237                     sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
2238                     ost->img_resample_ctx = sws_getContext(
2239                             icodec->width - (frame_leftBand + frame_rightBand),
2240                             icodec->height - (frame_topBand + frame_bottomBand),
2241                             icodec->pix_fmt,
2242                             codec->width,
2243                             codec->height,
2244                             codec->pix_fmt,
2245                             sws_flags, NULL, NULL, NULL);
2246                     if (ost->img_resample_ctx == NULL) {
2247                         fprintf(stderr, "Cannot get resampling context\n");
2248                         ffmpeg_exit(1);
2249                     }
2250
2251 #if !CONFIG_AVFILTER
2252                     ost->original_height = icodec->height;
2253                     ost->original_width  = icodec->width;
2254 #endif
2255                     codec->bits_per_raw_sample= 0;
2256                 }
2257                 ost->resample_height = icodec->height - (frame_topBand  + frame_bottomBand);
2258                 ost->resample_width  = icodec->width  - (frame_leftBand + frame_rightBand);
2259                 ost->resample_pix_fmt= icodec->pix_fmt;
2260                 ost->encoding_needed = 1;
2261                 ist->decoding_needed = 1;
2262
2263 #if CONFIG_AVFILTER
2264                 if (configure_filters(ist, ost)) {
2265                     fprintf(stderr, "Error opening filters!\n");
2266                     exit(1);
2267                 }
2268 #endif
2269                 break;
2270             case AVMEDIA_TYPE_SUBTITLE:
2271                 ost->encoding_needed = 1;
2272                 ist->decoding_needed = 1;
2273                 break;
2274             default:
2275                 abort();
2276                 break;
2277             }
2278             /* two pass mode */
2279             if (ost->encoding_needed &&
2280                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2281                 char logfilename[1024];
2282                 FILE *f;
2283
2284                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2285                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2286                          i);
2287                 if (codec->flags & CODEC_FLAG_PASS1) {
2288                     f = fopen(logfilename, "wb");
2289                     if (!f) {
2290                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2291                         ffmpeg_exit(1);
2292                     }
2293                     ost->logfile = f;
2294                 } else {
2295                     char  *logbuffer;
2296                     size_t logbuffer_size;
2297                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2298                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2299                         ffmpeg_exit(1);
2300                     }
2301                     codec->stats_in = logbuffer;
2302                 }
2303             }
2304         }
2305         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2306             int size= codec->width * codec->height;
2307             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2308         }
2309     }
2310
2311     if (!bit_buffer)
2312         bit_buffer = av_malloc(bit_buffer_size);
2313     if (!bit_buffer) {
2314         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2315                 bit_buffer_size);
2316         ret = AVERROR(ENOMEM);
2317         goto fail;
2318     }
2319
2320     /* open each encoder */
2321     for(i=0;i<nb_ostreams;i++) {
2322         ost = ost_table[i];
2323         if (ost->encoding_needed) {
2324             AVCodec *codec = i < nb_output_codecs ? output_codecs[i] : NULL;
2325             if (!codec)
2326                 codec = avcodec_find_encoder(ost->st->codec->codec_id);
2327             if (!codec) {
2328                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2329                          ost->st->codec->codec_id, ost->file_index, ost->index);
2330                 ret = AVERROR(EINVAL);
2331                 goto dump_format;
2332             }
2333             if (avcodec_open(ost->st->codec, codec) < 0) {
2334                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2335                         ost->file_index, ost->index);
2336                 ret = AVERROR(EINVAL);
2337                 goto dump_format;
2338             }
2339             extra_size += ost->st->codec->extradata_size;
2340         }
2341     }
2342
2343     /* open each decoder */
2344     for(i=0;i<nb_istreams;i++) {
2345         ist = ist_table[i];
2346         if (ist->decoding_needed) {
2347             AVCodec *codec = i < nb_input_codecs ? input_codecs[i] : NULL;
2348             if (!codec)
2349                 codec = avcodec_find_decoder(ist->st->codec->codec_id);
2350             if (!codec) {
2351                 snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
2352                         ist->st->codec->codec_id, ist->file_index, ist->index);
2353                 ret = AVERROR(EINVAL);
2354                 goto dump_format;
2355             }
2356             if (avcodec_open(ist->st->codec, codec) < 0) {
2357                 snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
2358                         ist->file_index, ist->index);
2359                 ret = AVERROR(EINVAL);
2360                 goto dump_format;
2361             }
2362             //if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2363             //    ist->st->codec->flags |= CODEC_FLAG_REPEAT_FIELD;
2364         }
2365     }
2366
2367     /* init pts */
2368     for(i=0;i<nb_istreams;i++) {
2369         AVStream *st;
2370         ist = ist_table[i];
2371         st= ist->st;
2372         ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
2373         ist->next_pts = AV_NOPTS_VALUE;
2374         init_pts_correction(&ist->pts_ctx);
2375         ist->is_start = 1;
2376     }
2377
2378     /* set meta data information from input file if required */
2379     for (i=0;i<nb_meta_data_maps;i++) {
2380         AVFormatContext *out_file;
2381         AVFormatContext *in_file;
2382         AVMetadataTag *mtag;
2383
2384         int out_file_index = meta_data_maps[i].out_file;
2385         int in_file_index = meta_data_maps[i].in_file;
2386         if (out_file_index < 0 || out_file_index >= nb_output_files) {
2387             snprintf(error, sizeof(error), "Invalid output file index %d map_meta_data(%d,%d)",
2388                      out_file_index, out_file_index, in_file_index);
2389             ret = AVERROR(EINVAL);
2390             goto dump_format;
2391         }
2392         if (in_file_index < 0 || in_file_index >= nb_input_files) {
2393             snprintf(error, sizeof(error), "Invalid input file index %d map_meta_data(%d,%d)",
2394                      in_file_index, out_file_index, in_file_index);
2395             ret = AVERROR(EINVAL);
2396             goto dump_format;
2397         }
2398
2399         out_file = output_files[out_file_index];
2400         in_file = input_files[in_file_index];
2401
2402
2403         mtag=NULL;
2404         while((mtag=av_metadata_get(in_file->metadata, "", mtag, AV_METADATA_IGNORE_SUFFIX)))
2405             av_metadata_set2(&out_file->metadata, mtag->key, mtag->value, AV_METADATA_DONT_OVERWRITE);
2406         av_metadata_conv(out_file, out_file->oformat->metadata_conv,
2407                                     in_file->iformat->metadata_conv);
2408     }
2409
2410     /* copy chapters from the first input file that has them*/
2411     for (i = 0; i < nb_input_files; i++) {
2412         if (!input_files[i]->nb_chapters)
2413             continue;
2414
2415         for (j = 0; j < nb_output_files; j++)
2416             if ((ret = copy_chapters(i, j)) < 0)
2417                 goto dump_format;
2418     }
2419
2420     /* open files and write file headers */
2421     for(i=0;i<nb_output_files;i++) {
2422         os = output_files[i];
2423         if (av_write_header(os) < 0) {
2424             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2425             ret = AVERROR(EINVAL);
2426             goto dump_format;
2427         }
2428         if (strcmp(output_files[i]->oformat->name, "rtp")) {
2429             want_sdp = 0;
2430         }
2431     }
2432
2433  dump_format:
2434     /* dump the file output parameters - cannot be done before in case
2435        of stream copy */
2436     for(i=0;i<nb_output_files;i++) {
2437         dump_format(output_files[i], i, output_files[i]->filename, 1);
2438     }
2439
2440     /* dump the stream mapping */
2441     if (verbose >= 0) {
2442         fprintf(stderr, "Stream mapping:\n");
2443         for(i=0;i<nb_ostreams;i++) {
2444             ost = ost_table[i];
2445             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2446                     ist_table[ost->source_index]->file_index,
2447                     ist_table[ost->source_index]->index,
2448                     ost->file_index,
2449                     ost->index);
2450             if (ost->sync_ist != ist_table[ost->source_index])
2451                 fprintf(stderr, " [sync #%d.%d]",
2452                         ost->sync_ist->file_index,
2453                         ost->sync_ist->index);
2454             fprintf(stderr, "\n");
2455         }
2456     }
2457
2458     if (ret) {
2459         fprintf(stderr, "%s\n", error);
2460         goto fail;
2461     }
2462
2463     if (want_sdp) {
2464         print_sdp(output_files, nb_output_files);
2465     }
2466
2467     if (!using_stdin && verbose >= 0) {
2468         fprintf(stderr, "Press [q] to stop encoding\n");
2469         url_set_interrupt_cb(decode_interrupt_cb);
2470     }
2471     term_init();
2472
2473     timer_start = av_gettime();
2474
2475     for(; received_sigterm == 0;) {
2476         int file_index, ist_index;
2477         AVPacket pkt;
2478         double ipts_min;
2479         double opts_min;
2480
2481     redo:
2482         ipts_min= 1e100;
2483         opts_min= 1e100;
2484         /* if 'q' pressed, exits */
2485         if (!using_stdin) {
2486             if (q_pressed)
2487                 break;
2488             /* read_key() returns 0 on EOF */
2489             key = read_key();
2490             if (key == 'q')
2491                 break;
2492         }
2493
2494         /* select the stream that we must read now by looking at the
2495            smallest output pts */
2496         file_index = -1;
2497         for(i=0;i<nb_ostreams;i++) {
2498             double ipts, opts;
2499             ost = ost_table[i];
2500             os = output_files[ost->file_index];
2501             ist = ist_table[ost->source_index];
2502             if(ist->is_past_recording_time || no_packet[ist->file_index])
2503                 continue;
2504                 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2505             ipts = (double)ist->pts;
2506             if (!file_table[ist->file_index].eof_reached){
2507                 if(ipts < ipts_min) {
2508                     ipts_min = ipts;
2509                     if(input_sync ) file_index = ist->file_index;
2510                 }
2511                 if(opts < opts_min) {
2512                     opts_min = opts;
2513                     if(!input_sync) file_index = ist->file_index;
2514                 }
2515             }
2516             if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
2517                 file_index= -1;
2518                 break;
2519             }
2520         }
2521         /* if none, if is finished */
2522         if (file_index < 0) {
2523             if(no_packet_count){
2524                 no_packet_count=0;
2525                 memset(no_packet, 0, sizeof(no_packet));
2526                 usleep(10000);
2527                 continue;
2528             }
2529             break;
2530         }
2531
2532         /* finish if limit size exhausted */
2533         if (limit_filesize != 0 && limit_filesize <= url_ftell(output_files[0]->pb))
2534             break;
2535
2536         /* read a frame from it and output it in the fifo */
2537         is = input_files[file_index];
2538         ret= av_read_frame(is, &pkt);
2539         if(ret == AVERROR(EAGAIN)){
2540             no_packet[file_index]=1;
2541             no_packet_count++;
2542             continue;
2543         }
2544         if (ret < 0) {
2545             file_table[file_index].eof_reached = 1;
2546             if (opt_shortest)
2547                 break;
2548             else
2549                 continue;
2550         }
2551
2552         no_packet_count=0;
2553         memset(no_packet, 0, sizeof(no_packet));
2554
2555         if (do_pkt_dump) {
2556             av_pkt_dump_log(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump);
2557         }
2558         /* the following test is needed in case new streams appear
2559            dynamically in stream : we ignore them */
2560         if (pkt.stream_index >= file_table[file_index].nb_streams)
2561             goto discard_packet;
2562         ist_index = file_table[file_index].ist_index + pkt.stream_index;
2563         ist = ist_table[ist_index];
2564         if (ist->discard)
2565             goto discard_packet;
2566
2567         if (pkt.dts != AV_NOPTS_VALUE)
2568             pkt.dts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2569         if (pkt.pts != AV_NOPTS_VALUE)
2570             pkt.pts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2571
2572         if (pkt.stream_index < nb_input_files_ts_scale[file_index]
2573             && input_files_ts_scale[file_index][pkt.stream_index]){
2574             if(pkt.pts != AV_NOPTS_VALUE)
2575                 pkt.pts *= input_files_ts_scale[file_index][pkt.stream_index];
2576             if(pkt.dts != AV_NOPTS_VALUE)
2577                 pkt.dts *= input_files_ts_scale[file_index][pkt.stream_index];
2578         }
2579
2580 //        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);
2581         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2582             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2583             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2584             int64_t delta= pkt_dts - ist->next_pts;
2585             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2586                 input_files_ts_offset[ist->file_index]-= delta;
2587                 if (verbose > 2)
2588                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n", delta, input_files_ts_offset[ist->file_index]);
2589                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2590                 if(pkt.pts != AV_NOPTS_VALUE)
2591                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2592             }
2593         }
2594
2595         /* finish if recording time exhausted */
2596         if (recording_time != INT64_MAX &&
2597             av_compare_ts(pkt.pts, ist->st->time_base, recording_time + start_time, (AVRational){1, 1000000}) >= 0) {
2598             ist->is_past_recording_time = 1;
2599             goto discard_packet;
2600         }
2601
2602         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->index, pkt.size);
2603         if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
2604
2605             if (verbose >= 0)
2606                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2607                         ist->file_index, ist->index);
2608             if (exit_on_error)
2609                 ffmpeg_exit(1);
2610             av_free_packet(&pkt);
2611             goto redo;
2612         }
2613
2614     discard_packet:
2615         av_free_packet(&pkt);
2616
2617         /* dump report by using the output first video and audio streams */
2618         print_report(output_files, ost_table, nb_ostreams, 0);
2619     }
2620
2621     /* at the end of stream, we must flush the decoder buffers */
2622     for(i=0;i<nb_istreams;i++) {
2623         ist = ist_table[i];
2624         if (ist->decoding_needed) {
2625             output_packet(ist, i, ost_table, nb_ostreams, NULL);
2626         }
2627     }
2628
2629     term_exit();
2630
2631     /* write the trailer if needed and close file */
2632     for(i=0;i<nb_output_files;i++) {
2633         os = output_files[i];
2634         av_write_trailer(os);
2635     }
2636
2637     /* dump report by using the first video and audio streams */
2638     print_report(output_files, ost_table, nb_ostreams, 1);
2639
2640     /* close each encoder */
2641     for(i=0;i<nb_ostreams;i++) {
2642         ost = ost_table[i];
2643         if (ost->encoding_needed) {
2644             av_freep(&ost->st->codec->stats_in);
2645             avcodec_close(ost->st->codec);
2646         }
2647     }
2648
2649     /* close each decoder */
2650     for(i=0;i<nb_istreams;i++) {
2651         ist = ist_table[i];
2652         if (ist->decoding_needed) {
2653             avcodec_close(ist->st->codec);
2654         }
2655     }
2656 #if CONFIG_AVFILTER
2657     if (graph) {
2658         avfilter_graph_destroy(graph);
2659         av_freep(&graph);
2660     }
2661 #endif
2662
2663     /* finished ! */
2664     ret = 0;
2665
2666  fail:
2667     av_freep(&bit_buffer);
2668     av_free(file_table);
2669
2670     if (ist_table) {
2671         for(i=0;i<nb_istreams;i++) {
2672             ist = ist_table[i];
2673             av_free(ist);
2674         }
2675         av_free(ist_table);
2676     }
2677     if (ost_table) {
2678         for(i=0;i<nb_ostreams;i++) {
2679             ost = ost_table[i];
2680             if (ost) {
2681                 if (ost->st->stream_copy)
2682                     av_freep(&ost->st->codec->extradata);
2683                 if (ost->logfile) {
2684                     fclose(ost->logfile);
2685                     ost->logfile = NULL;
2686                 }
2687                 av_fifo_free(ost->fifo); /* works even if fifo is not
2688                                              initialized but set to zero */
2689                 av_free(ost->pict_tmp.data[0]);
2690                 if (ost->video_resample)
2691                     sws_freeContext(ost->img_resample_ctx);
2692                 if (ost->resample)
2693                     audio_resample_close(ost->resample);
2694                 if (ost->reformat_ctx)
2695                     av_audio_convert_free(ost->reformat_ctx);
2696                 av_free(ost);
2697             }
2698         }
2699         av_free(ost_table);
2700     }
2701     return ret;
2702 }
2703
2704 static void opt_format(const char *arg)
2705 {
2706     /* compatibility stuff for pgmyuv */
2707     if (!strcmp(arg, "pgmyuv")) {
2708         pgmyuv_compatibility_hack=1;
2709 //        opt_image_format(arg);
2710         arg = "image2";
2711         fprintf(stderr, "pgmyuv format is deprecated, use image2\n");
2712     }
2713
2714     last_asked_format = arg;
2715 }
2716
2717 static void opt_video_rc_override_string(const char *arg)
2718 {
2719     video_rc_override_string = arg;
2720 }
2721
2722 static int opt_me_threshold(const char *opt, const char *arg)
2723 {
2724     me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2725     return 0;
2726 }
2727
2728 static int opt_verbose(const char *opt, const char *arg)
2729 {
2730     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2731     return 0;
2732 }
2733
2734 static int opt_frame_rate(const char *opt, const char *arg)
2735 {
2736     if (av_parse_video_rate(&frame_rate, arg) < 0) {
2737         fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2738         ffmpeg_exit(1);
2739     }
2740     return 0;
2741 }
2742
2743 static int opt_bitrate(const char *opt, const char *arg)
2744 {
2745     int codec_type = opt[0]=='a' ? AVMEDIA_TYPE_AUDIO : AVMEDIA_TYPE_VIDEO;
2746
2747     opt_default(opt, arg);
2748
2749     if (av_get_int(avcodec_opts[codec_type], "b", NULL) < 1000)
2750         fprintf(stderr, "WARNING: The bitrate parameter is set too low. It takes bits/s as argument, not kbits/s\n");
2751
2752     return 0;
2753 }
2754
2755 static void opt_frame_crop_top(const char *arg)
2756 {
2757     frame_topBand = atoi(arg);
2758     if (frame_topBand < 0) {
2759         fprintf(stderr, "Incorrect top crop size\n");
2760         ffmpeg_exit(1);
2761     }
2762     if ((frame_topBand) >= frame_height){
2763         fprintf(stderr, "Vertical crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");
2764         ffmpeg_exit(1);
2765     }
2766     fprintf(stderr, "-crop* is deprecated in favor of the crop avfilter\n");
2767     frame_height -= frame_topBand;
2768 }
2769
2770 static void opt_frame_crop_bottom(const char *arg)
2771 {
2772     frame_bottomBand = atoi(arg);
2773     if (frame_bottomBand < 0) {
2774         fprintf(stderr, "Incorrect bottom crop size\n");
2775         ffmpeg_exit(1);
2776     }
2777     if ((frame_bottomBand) >= frame_height){
2778         fprintf(stderr, "Vertical crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");
2779         ffmpeg_exit(1);
2780     }
2781     fprintf(stderr, "-crop* is deprecated in favor of the crop avfilter\n");
2782     frame_height -= frame_bottomBand;
2783 }
2784
2785 static void opt_frame_crop_left(const char *arg)
2786 {
2787     frame_leftBand = atoi(arg);
2788     if (frame_leftBand < 0) {
2789         fprintf(stderr, "Incorrect left crop size\n");
2790         ffmpeg_exit(1);
2791     }
2792     if ((frame_leftBand) >= frame_width){
2793         fprintf(stderr, "Horizontal crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");
2794         ffmpeg_exit(1);
2795     }
2796     fprintf(stderr, "-crop* is deprecated in favor of the crop avfilter\n");
2797     frame_width -= frame_leftBand;
2798 }
2799
2800 static void opt_frame_crop_right(const char *arg)
2801 {
2802     frame_rightBand = atoi(arg);
2803     if (frame_rightBand < 0) {
2804         fprintf(stderr, "Incorrect right crop size\n");
2805         ffmpeg_exit(1);
2806     }
2807     if ((frame_rightBand) >= frame_width){
2808         fprintf(stderr, "Horizontal crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");
2809         ffmpeg_exit(1);
2810     }
2811     fprintf(stderr, "-crop* is deprecated in favor of the crop avfilter\n");
2812     frame_width -= frame_rightBand;
2813 }
2814
2815 static void opt_frame_size(const char *arg)
2816 {
2817     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2818         fprintf(stderr, "Incorrect frame size\n");
2819         ffmpeg_exit(1);
2820     }
2821 }
2822
2823 static int opt_pad(const char *opt, const char *arg) {
2824     fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2825     return -1;
2826 }
2827
2828 static void opt_frame_pix_fmt(const char *arg)
2829 {
2830     if (strcmp(arg, "list")) {
2831         frame_pix_fmt = av_get_pix_fmt(arg);
2832         if (frame_pix_fmt == PIX_FMT_NONE) {
2833             fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2834             ffmpeg_exit(1);
2835         }
2836     } else {
2837         show_pix_fmts();
2838         ffmpeg_exit(0);
2839     }
2840 }
2841
2842 static void opt_frame_aspect_ratio(const char *arg)
2843 {
2844     int x = 0, y = 0;
2845     double ar = 0;
2846     const char *p;
2847     char *end;
2848
2849     p = strchr(arg, ':');
2850     if (p) {
2851         x = strtol(arg, &end, 10);
2852         if (end == p)
2853             y = strtol(end+1, &end, 10);
2854         if (x > 0 && y > 0)
2855             ar = (double)x / (double)y;
2856     } else
2857         ar = strtod(arg, NULL);
2858
2859     if (!ar) {
2860         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2861         ffmpeg_exit(1);
2862     }
2863     frame_aspect_ratio = ar;
2864 }
2865
2866 static int opt_metadata(const char *opt, const char *arg)
2867 {
2868     char *mid= strchr(arg, '=');
2869
2870     if(!mid){
2871         fprintf(stderr, "Missing =\n");
2872         ffmpeg_exit(1);
2873     }
2874     *mid++= 0;
2875
2876     metadata_count++;
2877     metadata= av_realloc(metadata, sizeof(*metadata)*metadata_count);
2878     metadata[metadata_count-1].key  = av_strdup(arg);
2879     metadata[metadata_count-1].value= av_strdup(mid);
2880
2881     return 0;
2882 }
2883
2884 static void opt_qscale(const char *arg)
2885 {
2886     video_qscale = atof(arg);
2887     if (video_qscale <= 0 ||
2888         video_qscale > 255) {
2889         fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2890         ffmpeg_exit(1);
2891     }
2892 }
2893
2894 static void opt_top_field_first(const char *arg)
2895 {
2896     top_field_first= atoi(arg);
2897 }
2898
2899 static int opt_thread_count(const char *opt, const char *arg)
2900 {
2901     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2902 #if !HAVE_THREADS
2903     if (verbose >= 0)
2904         fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2905 #endif
2906     return 0;
2907 }
2908
2909 static void opt_audio_sample_fmt(const char *arg)
2910 {
2911     if (strcmp(arg, "list"))
2912         audio_sample_fmt = avcodec_get_sample_fmt(arg);
2913     else {
2914         list_fmts(avcodec_sample_fmt_string, SAMPLE_FMT_NB);
2915         ffmpeg_exit(0);
2916     }
2917 }
2918
2919 static int opt_audio_rate(const char *opt, const char *arg)
2920 {
2921     audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2922     return 0;
2923 }
2924
2925 static int opt_audio_channels(const char *opt, const char *arg)
2926 {
2927     audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2928     return 0;
2929 }
2930
2931 static void opt_video_channel(const char *arg)
2932 {
2933     video_channel = strtol(arg, NULL, 0);
2934 }
2935
2936 static void opt_video_standard(const char *arg)
2937 {
2938     video_standard = av_strdup(arg);
2939 }
2940
2941 static void opt_codec(int *pstream_copy, char **pcodec_name,
2942                       int codec_type, const char *arg)
2943 {
2944     av_freep(pcodec_name);
2945     if (!strcmp(arg, "copy")) {
2946         *pstream_copy = 1;
2947     } else {
2948         *pcodec_name = av_strdup(arg);
2949     }
2950 }
2951
2952 static void opt_audio_codec(const char *arg)
2953 {
2954     opt_codec(&audio_stream_copy, &audio_codec_name, AVMEDIA_TYPE_AUDIO, arg);
2955 }
2956
2957 static void opt_audio_tag(const char *arg)
2958 {
2959     char *tail;
2960     audio_codec_tag= strtol(arg, &tail, 0);
2961
2962     if(!tail || *tail)
2963         audio_codec_tag= arg[0] + (arg[1]<<8) + (arg[2]<<16) + (arg[3]<<24);
2964 }
2965
2966 static void opt_video_tag(const char *arg)
2967 {
2968     char *tail;
2969     video_codec_tag= strtol(arg, &tail, 0);
2970
2971     if(!tail || *tail)
2972         video_codec_tag= arg[0] + (arg[1]<<8) + (arg[2]<<16) + (arg[3]<<24);
2973 }
2974
2975 static void opt_video_codec(const char *arg)
2976 {
2977     opt_codec(&video_stream_copy, &video_codec_name, AVMEDIA_TYPE_VIDEO, arg);
2978 }
2979
2980 static void opt_subtitle_codec(const char *arg)
2981 {
2982     opt_codec(&subtitle_stream_copy, &subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, arg);
2983 }
2984
2985 static void opt_subtitle_tag(const char *arg)
2986 {
2987     char *tail;
2988     subtitle_codec_tag= strtol(arg, &tail, 0);
2989
2990     if(!tail || *tail)
2991         subtitle_codec_tag= arg[0] + (arg[1]<<8) + (arg[2]<<16) + (arg[3]<<24);
2992 }
2993
2994 static void opt_map(const char *arg)
2995 {
2996     AVStreamMap *m;
2997     char *p;
2998
2999     stream_maps = grow_array(stream_maps, sizeof(*stream_maps), &nb_stream_maps, nb_stream_maps + 1);
3000     m = &stream_maps[nb_stream_maps-1];
3001
3002     m->file_index = strtol(arg, &p, 0);
3003     if (*p)
3004         p++;
3005
3006     m->stream_index = strtol(p, &p, 0);
3007     if (*p) {
3008         p++;
3009         m->sync_file_index = strtol(p, &p, 0);
3010         if (*p)
3011             p++;
3012         m->sync_stream_index = strtol(p, &p, 0);
3013     } else {
3014         m->sync_file_index = m->file_index;
3015         m->sync_stream_index = m->stream_index;
3016     }
3017 }
3018
3019 static void opt_map_meta_data(const char *arg)
3020 {
3021     AVMetaDataMap *m;
3022     char *p;
3023
3024     m = &meta_data_maps[nb_meta_data_maps++];
3025
3026     m->out_file = strtol(arg, &p, 0);
3027     if (*p)
3028         p++;
3029
3030     m->in_file = strtol(p, &p, 0);
3031 }
3032
3033 static void opt_input_ts_scale(const char *arg)
3034 {
3035     unsigned int stream;
3036     double scale;
3037     char *p;
3038
3039     stream = strtol(arg, &p, 0);
3040     if (*p)
3041         p++;
3042     scale= strtod(p, &p);
3043
3044     if(stream >= MAX_STREAMS)
3045         ffmpeg_exit(1);
3046
3047     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);
3048     input_files_ts_scale[nb_input_files][stream]= scale;
3049 }
3050
3051 static int opt_recording_time(const char *opt, const char *arg)
3052 {
3053     recording_time = parse_time_or_die(opt, arg, 1);
3054     return 0;
3055 }
3056
3057 static int opt_start_time(const char *opt, const char *arg)
3058 {
3059     start_time = parse_time_or_die(opt, arg, 1);
3060     return 0;
3061 }
3062
3063 static int opt_recording_timestamp(const char *opt, const char *arg)
3064 {
3065     recording_timestamp = parse_time_or_die(opt, arg, 0) / 1000000;
3066     return 0;
3067 }
3068
3069 static int opt_input_ts_offset(const char *opt, const char *arg)
3070 {
3071     input_ts_offset = parse_time_or_die(opt, arg, 1);
3072     return 0;
3073 }
3074
3075 static enum CodecID find_codec_or_die(const char *name, int type, int encoder, int strict)
3076 {
3077     const char *codec_string = encoder ? "encoder" : "decoder";
3078     AVCodec *codec;
3079
3080     if(!name)
3081         return CODEC_ID_NONE;
3082     codec = encoder ?
3083         avcodec_find_encoder_by_name(name) :
3084         avcodec_find_decoder_by_name(name);
3085     if(!codec) {
3086         fprintf(stderr, "Unknown %s '%s'\n", codec_string, name);
3087         ffmpeg_exit(1);
3088     }
3089     if(codec->type != type) {
3090         fprintf(stderr, "Invalid %s type '%s'\n", codec_string, name);
3091         ffmpeg_exit(1);
3092     }
3093     if(codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
3094        strict > FF_COMPLIANCE_EXPERIMENTAL) {
3095         fprintf(stderr, "%s '%s' is experimental and might produce bad "
3096                 "results.\nAdd '-strict experimental' if you want to use it.\n",
3097                 codec_string, codec->name);
3098         codec = encoder ?
3099             avcodec_find_encoder(codec->id) :
3100             avcodec_find_decoder(codec->id);
3101         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
3102             fprintf(stderr, "Or use the non experimental %s '%s'.\n",
3103                     codec_string, codec->name);
3104         ffmpeg_exit(1);
3105     }
3106     return codec->id;
3107 }
3108
3109 static void opt_input_file(const char *filename)
3110 {
3111     AVFormatContext *ic;
3112     AVFormatParameters params, *ap = &params;
3113     AVInputFormat *file_iformat = NULL;
3114     int err, i, ret, rfps, rfps_base;
3115     int64_t timestamp;
3116
3117     if (last_asked_format) {
3118         if (!(file_iformat = av_find_input_format(last_asked_format))) {
3119             fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
3120             ffmpeg_exit(1);
3121         }
3122         last_asked_format = NULL;
3123     }
3124
3125     if (!strcmp(filename, "-"))
3126         filename = "pipe:";
3127
3128     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3129                     !strcmp(filename, "/dev/stdin");
3130
3131     /* get default parameters from command line */
3132     ic = avformat_alloc_context();
3133     if (!ic) {
3134         print_error(filename, AVERROR(ENOMEM));
3135         ffmpeg_exit(1);
3136     }
3137
3138     memset(ap, 0, sizeof(*ap));
3139     ap->prealloced_context = 1;
3140     ap->sample_rate = audio_sample_rate;
3141     ap->channels = audio_channels;
3142     ap->time_base.den = frame_rate.num;
3143     ap->time_base.num = frame_rate.den;
3144     ap->width = frame_width;
3145     ap->height = frame_height;
3146     ap->pix_fmt = frame_pix_fmt;
3147    // ap->sample_fmt = audio_sample_fmt; //FIXME:not implemented in libavformat
3148     ap->channel = video_channel;
3149     ap->standard = video_standard;
3150
3151     set_context_opts(ic, avformat_opts, AV_OPT_FLAG_DECODING_PARAM, NULL);
3152
3153     ic->video_codec_id   =
3154         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0,
3155                           avcodec_opts[AVMEDIA_TYPE_VIDEO   ]->strict_std_compliance);
3156     ic->audio_codec_id   =
3157         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0,
3158                           avcodec_opts[AVMEDIA_TYPE_AUDIO   ]->strict_std_compliance);
3159     ic->subtitle_codec_id=
3160         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0,
3161                           avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->strict_std_compliance);
3162     ic->flags |= AVFMT_FLAG_NONBLOCK;
3163
3164     if(pgmyuv_compatibility_hack)
3165         ic->video_codec_id= CODEC_ID_PGMYUV;
3166
3167     /* open the input file with generic libav function */
3168     err = av_open_input_file(&ic, filename, file_iformat, 0, ap);
3169     if (err < 0) {
3170         print_error(filename, err);
3171         ffmpeg_exit(1);
3172     }
3173     if(opt_programid) {
3174         int i, j;
3175         int found=0;
3176         for(i=0; i<ic->nb_streams; i++){
3177             ic->streams[i]->discard= AVDISCARD_ALL;
3178         }
3179         for(i=0; i<ic->nb_programs; i++){
3180             AVProgram *p= ic->programs[i];
3181             if(p->id != opt_programid){
3182                 p->discard = AVDISCARD_ALL;
3183             }else{
3184                 found=1;
3185                 for(j=0; j<p->nb_stream_indexes; j++){
3186                     ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
3187                 }
3188             }
3189         }
3190         if(!found){
3191             fprintf(stderr, "Specified program id not found\n");
3192             ffmpeg_exit(1);
3193         }
3194         opt_programid=0;
3195     }
3196
3197     ic->loop_input = loop_input;
3198
3199     /* If not enough info to get the stream parameters, we decode the
3200        first frames to get it. (used in mpeg case for example) */
3201     ret = av_find_stream_info(ic);
3202     if (ret < 0 && verbose >= 0) {
3203         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3204         av_close_input_file(ic);
3205         ffmpeg_exit(1);
3206     }
3207
3208     timestamp = start_time;
3209     /* add the stream start time */
3210     if (ic->start_time != AV_NOPTS_VALUE)
3211         timestamp += ic->start_time;
3212
3213     /* if seeking requested, we execute it */
3214     if (start_time != 0) {
3215         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3216         if (ret < 0) {
3217             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3218                     filename, (double)timestamp / AV_TIME_BASE);
3219         }
3220         /* reset seek info */
3221         start_time = 0;
3222     }
3223
3224     /* update the current parameters so that they match the one of the input stream */
3225     for(i=0;i<ic->nb_streams;i++) {
3226         AVStream *st = ic->streams[i];
3227         AVCodecContext *dec = st->codec;
3228         avcodec_thread_init(dec, thread_count);
3229         input_codecs = grow_array(input_codecs, sizeof(*input_codecs), &nb_input_codecs, nb_input_codecs + 1);
3230         switch (dec->codec_type) {
3231         case AVMEDIA_TYPE_AUDIO:
3232             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(audio_codec_name);
3233             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]);
3234             //fprintf(stderr, "\nInput Audio channels: %d", dec->channels);
3235             channel_layout    = dec->channel_layout;
3236             audio_channels    = dec->channels;
3237             audio_sample_rate = dec->sample_rate;
3238             audio_sample_fmt  = dec->sample_fmt;
3239             if(audio_disable)
3240                 st->discard= AVDISCARD_ALL;
3241             /* Note that av_find_stream_info can add more streams, and we
3242              * currently have no chance of setting up lowres decoding
3243              * early enough for them. */
3244             if (dec->lowres)
3245                 audio_sample_rate >>= dec->lowres;
3246             break;
3247         case AVMEDIA_TYPE_VIDEO:
3248             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(video_codec_name);
3249             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]);
3250             frame_height = dec->height;
3251             frame_width  = dec->width;
3252             if(ic->streams[i]->sample_aspect_ratio.num)
3253                 frame_aspect_ratio=av_q2d(ic->streams[i]->sample_aspect_ratio);
3254             else
3255                 frame_aspect_ratio=av_q2d(dec->sample_aspect_ratio);
3256             frame_aspect_ratio *= (float) dec->width / dec->height;
3257             frame_pix_fmt = dec->pix_fmt;
3258             rfps      = ic->streams[i]->r_frame_rate.num;
3259             rfps_base = ic->streams[i]->r_frame_rate.den;
3260             if (dec->lowres) {
3261                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3262                 frame_height >>= dec->lowres;
3263                 frame_width  >>= dec->lowres;
3264             }
3265             if(me_threshold)
3266                 dec->debug |= FF_DEBUG_MV;
3267
3268             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3269
3270                 if (verbose >= 0)
3271                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3272                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3273
3274                     (float)rfps / rfps_base, rfps, rfps_base);
3275             }
3276             /* update the current frame rate to match the stream frame rate */
3277             frame_rate.num = rfps;
3278             frame_rate.den = rfps_base;
3279
3280             if(video_disable)
3281                 st->discard= AVDISCARD_ALL;
3282             else if(video_discard)
3283                 st->discard= video_discard;
3284             break;
3285         case AVMEDIA_TYPE_DATA:
3286             break;
3287         case AVMEDIA_TYPE_SUBTITLE:
3288             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(subtitle_codec_name);
3289             if(subtitle_disable)
3290                 st->discard = AVDISCARD_ALL;
3291             break;
3292         case AVMEDIA_TYPE_ATTACHMENT:
3293         case AVMEDIA_TYPE_UNKNOWN:
3294             break;
3295         default:
3296             abort();
3297         }
3298     }
3299
3300     input_files[nb_input_files] = ic;
3301     input_files_ts_offset[nb_input_files] = input_ts_offset - (copy_ts ? 0 : timestamp);
3302     /* dump the file content */
3303     if (verbose >= 0)
3304         dump_format(ic, nb_input_files, filename, 0);
3305
3306     nb_input_files++;
3307
3308     video_channel = 0;
3309
3310     av_freep(&video_codec_name);
3311     av_freep(&audio_codec_name);
3312     av_freep(&subtitle_codec_name);
3313 }
3314
3315 static void check_audio_video_sub_inputs(int *has_video_ptr, int *has_audio_ptr,
3316                                          int *has_subtitle_ptr)
3317 {
3318     int has_video, has_audio, has_subtitle, i, j;
3319     AVFormatContext *ic;
3320
3321     has_video = 0;
3322     has_audio = 0;
3323     has_subtitle = 0;
3324     for(j=0;j<nb_input_files;j++) {
3325         ic = input_files[j];
3326         for(i=0;i<ic->nb_streams;i++) {
3327             AVCodecContext *enc = ic->streams[i]->codec;
3328             switch(enc->codec_type) {
3329             case AVMEDIA_TYPE_AUDIO:
3330                 has_audio = 1;
3331                 break;
3332             case AVMEDIA_TYPE_VIDEO:
3333                 has_video = 1;
3334                 break;
3335             case AVMEDIA_TYPE_SUBTITLE:
3336                 has_subtitle = 1;
3337                 break;
3338             case AVMEDIA_TYPE_DATA:
3339             case AVMEDIA_TYPE_ATTACHMENT:
3340             case AVMEDIA_TYPE_UNKNOWN:
3341                 break;
3342             default:
3343                 abort();
3344             }
3345         }
3346     }
3347     *has_video_ptr = has_video;
3348     *has_audio_ptr = has_audio;
3349     *has_subtitle_ptr = has_subtitle;
3350 }
3351
3352 static AVOutputStream *new_output_stream(AVFormatContext *oc, int file_idx)
3353 {
3354     int idx = oc->nb_streams - 1;
3355     AVOutputStream *ost;
3356
3357     output_streams_for_file[file_idx] =
3358         grow_array(output_streams_for_file[file_idx],
3359                    sizeof(*output_streams_for_file[file_idx]),
3360                    &nb_output_streams_for_file[file_idx],
3361                    oc->nb_streams);
3362     ost = output_streams_for_file[file_idx][idx] =
3363         av_mallocz(sizeof(AVOutputStream));
3364     if (!ost) {
3365         fprintf(stderr, "Could not alloc output stream\n");
3366         ffmpeg_exit(1);
3367     }
3368     ost->file_index = file_idx;
3369     ost->index = idx;
3370     return ost;
3371 }
3372
3373 static void new_video_stream(AVFormatContext *oc, int file_idx)
3374 {
3375     AVStream *st;
3376     AVOutputStream *ost;
3377     AVCodecContext *video_enc;
3378     enum CodecID codec_id;
3379     AVCodec *codec= NULL;
3380
3381     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3382     if (!st) {
3383         fprintf(stderr, "Could not alloc stream\n");
3384         ffmpeg_exit(1);
3385     }
3386     ost = new_output_stream(oc, file_idx);
3387
3388     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3389     if(!video_stream_copy){
3390         if (video_codec_name) {
3391             codec_id = find_codec_or_die(video_codec_name, AVMEDIA_TYPE_VIDEO, 1,
3392                                          avcodec_opts[AVMEDIA_TYPE_VIDEO]->strict_std_compliance);
3393             codec = avcodec_find_encoder_by_name(video_codec_name);
3394             output_codecs[nb_output_codecs-1] = codec;
3395         } else {
3396             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_VIDEO);
3397             codec = avcodec_find_encoder(codec_id);
3398         }
3399     }
3400
3401     avcodec_get_context_defaults3(st->codec, codec);
3402     ost->bitstream_filters = video_bitstream_filters;
3403     video_bitstream_filters= NULL;
3404
3405     avcodec_thread_init(st->codec, thread_count);
3406
3407     video_enc = st->codec;
3408
3409     if(video_codec_tag)
3410         video_enc->codec_tag= video_codec_tag;
3411
3412     if(   (video_global_header&1)
3413        || (video_global_header==0 && (oc->oformat->flags & AVFMT_GLOBALHEADER))){
3414         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3415         avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3416     }
3417     if(video_global_header&2){
3418         video_enc->flags2 |= CODEC_FLAG2_LOCAL_HEADER;
3419         avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags2|= CODEC_FLAG2_LOCAL_HEADER;
3420     }
3421
3422     if (video_stream_copy) {
3423         st->stream_copy = 1;
3424         video_enc->codec_type = AVMEDIA_TYPE_VIDEO;
3425         video_enc->sample_aspect_ratio =
3426         st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3427     } else {
3428         const char *p;
3429         int i;
3430         AVRational fps= frame_rate.num ? frame_rate : (AVRational){25,1};
3431
3432         video_enc->codec_id = codec_id;
3433         set_context_opts(video_enc, avcodec_opts[AVMEDIA_TYPE_VIDEO], AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3434
3435         if (codec && codec->supported_framerates && !force_fps)
3436             fps = codec->supported_framerates[av_find_nearest_q_idx(fps, codec->supported_framerates)];
3437         video_enc->time_base.den = fps.num;
3438         video_enc->time_base.num = fps.den;
3439
3440         video_enc->width = frame_width;
3441         video_enc->height = frame_height;
3442         video_enc->sample_aspect_ratio = av_d2q(frame_aspect_ratio*video_enc->height/video_enc->width, 255);
3443         video_enc->pix_fmt = frame_pix_fmt;
3444         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3445
3446         choose_pixel_fmt(st, codec);
3447
3448         if (intra_only)
3449             video_enc->gop_size = 0;
3450         if (video_qscale || same_quality) {
3451             video_enc->flags |= CODEC_FLAG_QSCALE;
3452             video_enc->global_quality=
3453                 st->quality = FF_QP2LAMBDA * video_qscale;
3454         }
3455
3456         if(intra_matrix)
3457             video_enc->intra_matrix = intra_matrix;
3458         if(inter_matrix)
3459             video_enc->inter_matrix = inter_matrix;
3460
3461         p= video_rc_override_string;
3462         for(i=0; p; i++){
3463             int start, end, q;
3464             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3465             if(e!=3){
3466                 fprintf(stderr, "error parsing rc_override\n");
3467                 ffmpeg_exit(1);
3468             }
3469             video_enc->rc_override=
3470                 av_realloc(video_enc->rc_override,
3471                            sizeof(RcOverride)*(i+1));
3472             video_enc->rc_override[i].start_frame= start;
3473             video_enc->rc_override[i].end_frame  = end;
3474             if(q>0){
3475                 video_enc->rc_override[i].qscale= q;
3476                 video_enc->rc_override[i].quality_factor= 1.0;
3477             }
3478             else{
3479                 video_enc->rc_override[i].qscale= 0;
3480                 video_enc->rc_override[i].quality_factor= -q/100.0;
3481             }
3482             p= strchr(p, '/');
3483             if(p) p++;
3484         }
3485         video_enc->rc_override_count=i;
3486         if (!video_enc->rc_initial_buffer_occupancy)
3487             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3488         video_enc->me_threshold= me_threshold;
3489         video_enc->intra_dc_precision= intra_dc_precision - 8;
3490
3491         if (do_psnr)
3492             video_enc->flags|= CODEC_FLAG_PSNR;
3493
3494         /* two pass mode */
3495         if (do_pass) {
3496             if (do_pass == 1) {
3497                 video_enc->flags |= CODEC_FLAG_PASS1;
3498             } else {
3499                 video_enc->flags |= CODEC_FLAG_PASS2;
3500             }
3501         }
3502     }
3503     if (video_language) {
3504         av_metadata_set2(&st->metadata, "language", video_language, 0);
3505         av_freep(&video_language);
3506     }
3507
3508     /* reset some key parameters */
3509     video_disable = 0;
3510     av_freep(&video_codec_name);
3511     video_stream_copy = 0;
3512     frame_pix_fmt = PIX_FMT_NONE;
3513 }
3514
3515 static void new_audio_stream(AVFormatContext *oc, int file_idx)
3516 {
3517     AVStream *st;
3518     AVOutputStream *ost;
3519     AVCodec *codec= NULL;
3520     AVCodecContext *audio_enc;
3521     enum CodecID codec_id;
3522
3523     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3524     if (!st) {
3525         fprintf(stderr, "Could not alloc stream\n");
3526         ffmpeg_exit(1);
3527     }
3528     ost = new_output_stream(oc, file_idx);
3529
3530     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3531     if(!audio_stream_copy){
3532         if (audio_codec_name) {
3533             codec_id = find_codec_or_die(audio_codec_name, AVMEDIA_TYPE_AUDIO, 1,
3534                                          avcodec_opts[AVMEDIA_TYPE_AUDIO]->strict_std_compliance);
3535             codec = avcodec_find_encoder_by_name(audio_codec_name);
3536             output_codecs[nb_output_codecs-1] = codec;
3537         } else {
3538             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_AUDIO);
3539             codec = avcodec_find_encoder(codec_id);
3540         }
3541     }
3542
3543     avcodec_get_context_defaults3(st->codec, codec);
3544
3545     ost->bitstream_filters = audio_bitstream_filters;
3546     audio_bitstream_filters= NULL;
3547
3548     avcodec_thread_init(st->codec, thread_count);
3549
3550     audio_enc = st->codec;
3551     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3552
3553     if(audio_codec_tag)
3554         audio_enc->codec_tag= audio_codec_tag;
3555
3556     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3557         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3558         avcodec_opts[AVMEDIA_TYPE_AUDIO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3559     }
3560     if (audio_stream_copy) {
3561         st->stream_copy = 1;
3562         audio_enc->channels = audio_channels;
3563         audio_enc->sample_rate = audio_sample_rate;
3564     } else {
3565         audio_enc->codec_id = codec_id;
3566         set_context_opts(audio_enc, avcodec_opts[AVMEDIA_TYPE_AUDIO], AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3567
3568         if (audio_qscale > QSCALE_NONE) {
3569             audio_enc->flags |= CODEC_FLAG_QSCALE;
3570             audio_enc->global_quality = st->quality = FF_QP2LAMBDA * audio_qscale;
3571         }
3572         audio_enc->channels = audio_channels;
3573         audio_enc->sample_fmt = audio_sample_fmt;
3574         audio_enc->sample_rate = audio_sample_rate;
3575         audio_enc->channel_layout = channel_layout;
3576         if (avcodec_channel_layout_num_channels(channel_layout) != audio_channels)
3577             audio_enc->channel_layout = 0;
3578         choose_sample_fmt(st, codec);
3579         choose_sample_rate(st, codec);
3580     }
3581     audio_enc->time_base= (AVRational){1, audio_sample_rate};
3582     if (audio_language) {
3583         av_metadata_set2(&st->metadata, "language", audio_language, 0);
3584         av_freep(&audio_language);
3585     }
3586
3587     /* reset some key parameters */
3588     audio_disable = 0;
3589     av_freep(&audio_codec_name);
3590     audio_stream_copy = 0;
3591 }
3592
3593 static void new_subtitle_stream(AVFormatContext *oc, int file_idx)
3594 {
3595     AVStream *st;
3596     AVOutputStream *ost;
3597     AVCodec *codec=NULL;
3598     AVCodecContext *subtitle_enc;
3599
3600     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3601     if (!st) {
3602         fprintf(stderr, "Could not alloc stream\n");
3603         ffmpeg_exit(1);
3604     }
3605     ost = new_output_stream(oc, file_idx);
3606     subtitle_enc = st->codec;
3607     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3608     if(!subtitle_stream_copy){
3609         subtitle_enc->codec_id = find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 1,
3610                                                    avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->strict_std_compliance);
3611         codec= output_codecs[nb_output_codecs-1] = avcodec_find_encoder_by_name(subtitle_codec_name);
3612     }
3613     avcodec_get_context_defaults3(st->codec, codec);
3614
3615     ost->bitstream_filters = subtitle_bitstream_filters;
3616     subtitle_bitstream_filters= NULL;
3617
3618     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3619
3620     if(subtitle_codec_tag)
3621         subtitle_enc->codec_tag= subtitle_codec_tag;
3622
3623     if (subtitle_stream_copy) {
3624         st->stream_copy = 1;
3625     } else {
3626         set_context_opts(avcodec_opts[AVMEDIA_TYPE_SUBTITLE], subtitle_enc, AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3627     }
3628
3629     if (subtitle_language) {
3630         av_metadata_set2(&st->metadata, "language", subtitle_language, 0);
3631         av_freep(&subtitle_language);
3632     }
3633
3634     subtitle_disable = 0;
3635     av_freep(&subtitle_codec_name);
3636     subtitle_stream_copy = 0;
3637 }
3638
3639 static int opt_new_stream(const char *opt, const char *arg)
3640 {
3641     AVFormatContext *oc;
3642     int file_idx = nb_output_files - 1;
3643     if (nb_output_files <= 0) {
3644         fprintf(stderr, "At least one output file must be specified\n");
3645         ffmpeg_exit(1);
3646     }
3647     oc = output_files[file_idx];
3648
3649     if      (!strcmp(opt, "newvideo"   )) new_video_stream   (oc, file_idx);
3650     else if (!strcmp(opt, "newaudio"   )) new_audio_stream   (oc, file_idx);
3651     else if (!strcmp(opt, "newsubtitle")) new_subtitle_stream(oc, file_idx);
3652     else av_assert0(0);
3653     return 0;
3654 }
3655
3656 /* arg format is "output-stream-index:streamid-value". */
3657 static int opt_streamid(const char *opt, const char *arg)
3658 {
3659     int idx;
3660     char *p;
3661     char idx_str[16];
3662
3663     strncpy(idx_str, arg, sizeof(idx_str));
3664     idx_str[sizeof(idx_str)-1] = '\0';
3665     p = strchr(idx_str, ':');
3666     if (!p) {
3667         fprintf(stderr,
3668                 "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3669                 arg, opt);
3670         ffmpeg_exit(1);
3671     }
3672     *p++ = '\0';
3673     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, MAX_STREAMS-1);
3674     streamid_map = grow_array(streamid_map, sizeof(*streamid_map), &nb_streamid_map, idx+1);
3675     streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3676     return 0;
3677 }
3678
3679 static void opt_output_file(const char *filename)
3680 {
3681     AVFormatContext *oc;
3682     int err, use_video, use_audio, use_subtitle;
3683     int input_has_video, input_has_audio, input_has_subtitle;
3684     AVFormatParameters params, *ap = &params;