Move log_callback_help to cmdutils.[hc], for allowing sharing.
[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 #undef NDEBUG
83 #include <assert.h>
84
85 const char program_name[] = "FFmpeg";
86 const int program_birth_year = 2000;
87
88 /* select an input stream for an output stream */
89 typedef struct AVStreamMap {
90     int file_index;
91     int stream_index;
92     int sync_file_index;
93     int sync_stream_index;
94 } AVStreamMap;
95
96 /** select an input file for an output file */
97 typedef struct AVMetaDataMap {
98     int out_file;
99     int in_file;
100 } AVMetaDataMap;
101
102 static const OptionDef options[];
103
104 #define MAX_FILES 100
105
106 static const char *last_asked_format = NULL;
107 static AVFormatContext *input_files[MAX_FILES];
108 static int64_t input_files_ts_offset[MAX_FILES];
109 static double input_files_ts_scale[MAX_FILES][MAX_STREAMS];
110 static AVCodec *input_codecs[MAX_FILES*MAX_STREAMS];
111 static int nb_input_files = 0;
112 static int nb_icodecs;
113
114 static AVFormatContext *output_files[MAX_FILES];
115 static AVCodec *output_codecs[MAX_FILES*MAX_STREAMS];
116 static int nb_output_files = 0;
117 static int nb_ocodecs;
118
119 static AVStreamMap stream_maps[MAX_FILES*MAX_STREAMS];
120 static int nb_stream_maps;
121
122 static AVMetaDataMap meta_data_maps[MAX_FILES];
123 static int nb_meta_data_maps;
124
125 /* indexed by output file stream index */
126 static int streamid_map[MAX_STREAMS];
127
128 static int frame_width  = 0;
129 static int frame_height = 0;
130 static float frame_aspect_ratio = 0;
131 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
132 static enum SampleFormat audio_sample_fmt = SAMPLE_FMT_NONE;
133 static int frame_topBand  = 0;
134 static int frame_bottomBand = 0;
135 static int frame_leftBand  = 0;
136 static int frame_rightBand = 0;
137 static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
138 static AVRational frame_rate;
139 static float video_qscale = 0;
140 static uint16_t *intra_matrix = NULL;
141 static uint16_t *inter_matrix = NULL;
142 static const char *video_rc_override_string=NULL;
143 static int video_disable = 0;
144 static int video_discard = 0;
145 static char *video_codec_name = NULL;
146 static unsigned int video_codec_tag = 0;
147 static char *video_language = NULL;
148 static int same_quality = 0;
149 static int do_deinterlace = 0;
150 static int top_field_first = -1;
151 static int me_threshold = 0;
152 static int intra_dc_precision = 8;
153 static int loop_input = 0;
154 static int loop_output = AVFMT_NOOUTPUTLOOP;
155 static int qp_hist = 0;
156 #if CONFIG_AVFILTER
157 static char *vfilters = NULL;
158 AVFilterGraph *graph = NULL;
159 #endif
160
161 static int intra_only = 0;
162 static int audio_sample_rate = 44100;
163 static int64_t channel_layout = 0;
164 #define QSCALE_NONE -99999
165 static float audio_qscale = QSCALE_NONE;
166 static int audio_disable = 0;
167 static int audio_channels = 1;
168 static char  *audio_codec_name = NULL;
169 static unsigned int audio_codec_tag = 0;
170 static char *audio_language = NULL;
171
172 static int subtitle_disable = 0;
173 static char *subtitle_codec_name = NULL;
174 static char *subtitle_language = NULL;
175 static unsigned int subtitle_codec_tag = 0;
176
177 static float mux_preload= 0.5;
178 static float mux_max_delay= 0.7;
179
180 static int64_t recording_time = INT64_MAX;
181 static int64_t start_time = 0;
182 static int64_t recording_timestamp = 0;
183 static int64_t input_ts_offset = 0;
184 static int file_overwrite = 0;
185 static int metadata_count;
186 static AVMetadataTag *metadata;
187 static int do_benchmark = 0;
188 static int do_hex_dump = 0;
189 static int do_pkt_dump = 0;
190 static int do_psnr = 0;
191 static int do_pass = 0;
192 static char *pass_logfilename_prefix = NULL;
193 static int audio_stream_copy = 0;
194 static int video_stream_copy = 0;
195 static int subtitle_stream_copy = 0;
196 static int video_sync_method= -1;
197 static int audio_sync_method= 0;
198 static float audio_drift_threshold= 0.1;
199 static int copy_ts= 0;
200 static int opt_shortest = 0;
201 static int video_global_header = 0;
202 static char *vstats_filename;
203 static FILE *vstats_file;
204 static int opt_programid = 0;
205 static int copy_initial_nonkeyframes = 0;
206
207 static int rate_emu = 0;
208
209 static int  video_channel = 0;
210 static char *video_standard;
211
212 static int audio_volume = 256;
213
214 static int exit_on_error = 0;
215 static int using_stdin = 0;
216 static int verbose = 1;
217 static int thread_count= 1;
218 static int q_pressed = 0;
219 static int64_t video_size = 0;
220 static int64_t audio_size = 0;
221 static int64_t extra_size = 0;
222 static int nb_frames_dup = 0;
223 static int nb_frames_drop = 0;
224 static int input_sync;
225 static uint64_t limit_filesize = 0;
226 static int force_fps = 0;
227
228 static int pgmyuv_compatibility_hack=0;
229 static float dts_delta_threshold = 10;
230
231 static unsigned int sws_flags = SWS_BICUBIC;
232
233 static int64_t timer_start;
234
235 static uint8_t *audio_buf;
236 static uint8_t *audio_out;
237 unsigned int allocated_audio_out_size, allocated_audio_buf_size;
238
239 static short *samples;
240
241 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
242 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
243 static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL;
244 static AVBitStreamFilterContext *bitstream_filters[MAX_FILES][MAX_STREAMS];
245
246 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
247
248 struct AVInputStream;
249
250 typedef struct AVOutputStream {
251     int file_index;          /* file index */
252     int index;               /* stream index in the output file */
253     int source_index;        /* AVInputStream index */
254     AVStream *st;            /* stream in the output file */
255     int encoding_needed;     /* true if encoding needed for this stream */
256     int frame_number;
257     /* input pts and corresponding output pts
258        for A/V sync */
259     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
260     struct AVInputStream *sync_ist; /* input stream to sync against */
261     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
262     /* video only */
263     int video_resample;
264     AVFrame pict_tmp;      /* temporary image for resampling */
265     struct SwsContext *img_resample_ctx; /* for image resampling */
266     int resample_height;
267     int resample_width;
268     int resample_pix_fmt;
269
270     /* full frame size of first frame */
271     int original_height;
272     int original_width;
273
274     /* cropping area sizes */
275     int video_crop;
276     int topBand;
277     int bottomBand;
278     int leftBand;
279     int rightBand;
280
281     /* cropping area of first frame */
282     int original_topBand;
283     int original_bottomBand;
284     int original_leftBand;
285     int original_rightBand;
286
287     /* audio only */
288     int audio_resample;
289     ReSampleContext *resample; /* for audio resampling */
290     int reformat_pair;
291     AVAudioConvert *reformat_ctx;
292     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
293     FILE *logfile;
294 } AVOutputStream;
295
296 typedef struct AVInputStream {
297     int file_index;
298     int index;
299     AVStream *st;
300     int discard;             /* true if stream data should be discarded */
301     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
302     int64_t sample_index;      /* current sample */
303
304     int64_t       start;     /* time when read started */
305     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
306                                 is not defined */
307     int64_t       pts;       /* current pts */
308     int is_start;            /* is 1 at the start and after a discontinuity */
309     int showed_multi_packet_warning;
310     int is_past_recording_time;
311 #if CONFIG_AVFILTER
312     AVFilterContext *output_video_filter;
313     AVFilterContext *input_video_filter;
314     AVFrame *filter_frame;
315     int has_filter_frame;
316     AVFilterBufferRef *picref;
317 #endif
318 } AVInputStream;
319
320 typedef struct AVInputFile {
321     int eof_reached;      /* true if eof reached */
322     int ist_index;        /* index of first stream in ist_table */
323     int buffer_size;      /* current total buffer size */
324     int nb_streams;       /* nb streams we are aware of */
325 } AVInputFile;
326
327 #if HAVE_TERMIOS_H
328
329 /* init terminal so that we can grab keys */
330 static struct termios oldtty;
331 #endif
332
333 #if CONFIG_AVFILTER
334 typedef struct {
335     int pix_fmt;
336 } FilterOutPriv;
337
338
339 static int output_init(AVFilterContext *ctx, const char *args, void *opaque)
340 {
341     FilterOutPriv *priv = ctx->priv;
342
343     if(!opaque) return -1;
344
345     priv->pix_fmt = *((int *)opaque);
346
347     return 0;
348 }
349
350 static void output_end_frame(AVFilterLink *link)
351 {
352 }
353
354 static int output_query_formats(AVFilterContext *ctx)
355 {
356     FilterOutPriv *priv = ctx->priv;
357     enum PixelFormat pix_fmts[] = { priv->pix_fmt, PIX_FMT_NONE };
358
359     avfilter_set_common_formats(ctx, avfilter_make_format_list(pix_fmts));
360     return 0;
361 }
362
363 static int get_filtered_video_pic(AVFilterContext *ctx,
364                                   AVFilterBufferRef **picref, AVFrame *pic2,
365                                   uint64_t *pts)
366 {
367     AVFilterBufferRef *pic;
368
369     if(avfilter_request_frame(ctx->inputs[0]))
370         return -1;
371     if(!(pic = ctx->inputs[0]->cur_buf))
372         return -1;
373     *picref = pic;
374     ctx->inputs[0]->cur_buf = NULL;
375
376     *pts          = pic->pts;
377
378     memcpy(pic2->data,     pic->data,     sizeof(pic->data));
379     memcpy(pic2->linesize, pic->linesize, sizeof(pic->linesize));
380     pic2->interlaced_frame = pic->video->interlaced;
381     pic2->top_field_first  = pic->video->top_field_first;
382
383     return 1;
384 }
385
386 static AVFilter output_filter =
387 {
388     .name      = "ffmpeg_output",
389
390     .priv_size = sizeof(FilterOutPriv),
391     .init      = output_init,
392
393     .query_formats = output_query_formats,
394
395     .inputs    = (AVFilterPad[]) {{ .name          = "default",
396                                     .type          = AVMEDIA_TYPE_VIDEO,
397                                     .end_frame     = output_end_frame,
398                                     .min_perms     = AV_PERM_READ, },
399                                   { .name = NULL }},
400     .outputs   = (AVFilterPad[]) {{ .name = NULL }},
401 };
402
403 static int configure_filters(AVInputStream *ist, AVOutputStream *ost)
404 {
405     AVFilterContext *last_filter, *filter;
406     /** filter graph containing all filters including input & output */
407     AVCodecContext *codec = ost->st->codec;
408     AVCodecContext *icodec = ist->st->codec;
409     char args[255];
410     int ret;
411
412     graph = av_mallocz(sizeof(AVFilterGraph));
413
414     if ((ret = avfilter_open(&ist->input_video_filter, avfilter_get_by_name("buffer"), "src")) < 0)
415         return ret;
416     if ((ret = avfilter_open(&ist->output_video_filter, &output_filter, "out")) < 0)
417         return ret;
418
419     snprintf(args, 255, "%d:%d:%d", ist->st->codec->width,
420              ist->st->codec->height, ist->st->codec->pix_fmt);
421     if ((ret = avfilter_init_filter(ist->input_video_filter, args, NULL)) < 0)
422         return ret;
423     if ((ret = avfilter_init_filter(ist->output_video_filter, NULL, &codec->pix_fmt)) < 0)
424         return ret;
425
426     /* add input and output filters to the overall graph */
427     avfilter_graph_add_filter(graph, ist->input_video_filter);
428     avfilter_graph_add_filter(graph, ist->output_video_filter);
429
430     last_filter = ist->input_video_filter;
431
432     if (ost->video_crop) {
433         snprintf(args, 255, "%d:%d:%d:%d", ost->leftBand, ost->topBand,
434                  codec->width,
435                  codec->height);
436         if ((ret = avfilter_open(&filter, avfilter_get_by_name("crop"), NULL)) < 0)
437             return ret;
438         if ((ret = avfilter_init_filter(filter, args, NULL)) < 0)
439             return ret;
440         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
441             return ret;
442         last_filter = filter;
443         avfilter_graph_add_filter(graph, last_filter);
444     }
445
446     if((codec->width !=
447         icodec->width - (frame_leftBand + frame_rightBand)) ||
448        (codec->height != icodec->height - (frame_topBand  + frame_bottomBand))) {
449         snprintf(args, 255, "%d:%d:flags=0x%X",
450                  codec->width,
451                  codec->height,
452                  (int)av_get_int(sws_opts, "sws_flags", NULL));
453         if ((ret = avfilter_open(&filter, avfilter_get_by_name("scale"), NULL)) < 0)
454             return ret;
455         if ((ret = avfilter_init_filter(filter, args, NULL)) < 0)
456             return ret;
457         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
458             return ret;
459         last_filter = filter;
460         avfilter_graph_add_filter(graph, last_filter);
461     }
462
463     snprintf(args, sizeof(args), "flags=0x%X", (int)av_get_int(sws_opts, "sws_flags", NULL));
464     graph->scale_sws_opts = av_strdup(args);
465
466     if (vfilters) {
467         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
468         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
469
470         outputs->name    = av_strdup("in");
471         outputs->filter  = last_filter;
472         outputs->pad_idx = 0;
473         outputs->next    = NULL;
474
475         inputs->name    = av_strdup("out");
476         inputs->filter  = ist->output_video_filter;
477         inputs->pad_idx = 0;
478         inputs->next    = NULL;
479
480         if ((ret = avfilter_graph_parse(graph, vfilters, inputs, outputs, NULL)) < 0)
481             return ret;
482         av_freep(&vfilters);
483     } else {
484         if ((ret = avfilter_link(last_filter, 0, ist->output_video_filter, 0)) < 0)
485             return ret;
486     }
487
488     /* configure all the filter links */
489     if ((ret = avfilter_graph_check_validity(graph, NULL)) < 0)
490         return ret;
491     if ((ret = avfilter_graph_config_formats(graph, NULL)) < 0)
492         return ret;
493     if ((ret = avfilter_graph_config_links(graph, NULL)) < 0)
494         return ret;
495
496     codec->width  = ist->output_video_filter->inputs[0]->w;
497     codec->height = ist->output_video_filter->inputs[0]->h;
498
499     return 0;
500 }
501 #endif /* CONFIG_AVFILTER */
502
503 static void term_exit(void)
504 {
505 #if HAVE_TERMIOS_H
506     tcsetattr (0, TCSANOW, &oldtty);
507 #endif
508 }
509
510 static volatile int received_sigterm = 0;
511
512 static void
513 sigterm_handler(int sig)
514 {
515     received_sigterm = sig;
516     term_exit();
517 }
518
519 static void term_init(void)
520 {
521 #if HAVE_TERMIOS_H
522     struct termios tty;
523
524     tcgetattr (0, &tty);
525     oldtty = tty;
526     atexit(term_exit);
527
528     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
529                           |INLCR|IGNCR|ICRNL|IXON);
530     tty.c_oflag |= OPOST;
531     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
532     tty.c_cflag &= ~(CSIZE|PARENB);
533     tty.c_cflag |= CS8;
534     tty.c_cc[VMIN] = 1;
535     tty.c_cc[VTIME] = 0;
536
537     tcsetattr (0, TCSANOW, &tty);
538     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
539 #endif
540
541     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
542     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
543 #ifdef SIGXCPU
544     signal(SIGXCPU, sigterm_handler);
545 #endif
546 }
547
548 /* read a key without blocking */
549 static int read_key(void)
550 {
551 #if HAVE_TERMIOS_H
552     int n = 1;
553     unsigned char ch;
554     struct timeval tv;
555     fd_set rfds;
556
557     FD_ZERO(&rfds);
558     FD_SET(0, &rfds);
559     tv.tv_sec = 0;
560     tv.tv_usec = 0;
561     n = select(1, &rfds, NULL, NULL, &tv);
562     if (n > 0) {
563         n = read(0, &ch, 1);
564         if (n == 1)
565             return ch;
566
567         return n;
568     }
569 #elif HAVE_CONIO_H
570     if(kbhit())
571         return(getch());
572 #endif
573     return -1;
574 }
575
576 static int decode_interrupt_cb(void)
577 {
578     return q_pressed || (q_pressed = read_key() == 'q');
579 }
580
581 static int ffmpeg_exit(int ret)
582 {
583     int i;
584
585     /* close files */
586     for(i=0;i<nb_output_files;i++) {
587         /* maybe av_close_output_file ??? */
588         AVFormatContext *s = output_files[i];
589         int j;
590         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
591             url_fclose(s->pb);
592         for(j=0;j<s->nb_streams;j++) {
593             av_metadata_free(&s->streams[j]->metadata);
594             av_free(s->streams[j]->codec);
595             av_free(s->streams[j]);
596         }
597         for(j=0;j<s->nb_programs;j++) {
598             av_metadata_free(&s->programs[j]->metadata);
599         }
600         for(j=0;j<s->nb_chapters;j++) {
601             av_metadata_free(&s->chapters[j]->metadata);
602         }
603         av_metadata_free(&s->metadata);
604         av_free(s);
605     }
606     for(i=0;i<nb_input_files;i++)
607         av_close_input_file(input_files[i]);
608
609     av_free(intra_matrix);
610     av_free(inter_matrix);
611
612     if (vstats_file)
613         fclose(vstats_file);
614     av_free(vstats_filename);
615
616     av_free(opt_names);
617
618     av_free(video_codec_name);
619     av_free(audio_codec_name);
620     av_free(subtitle_codec_name);
621
622     av_free(video_standard);
623
624     for (i=0;i<AVMEDIA_TYPE_NB;i++)
625         av_free(avcodec_opts[i]);
626     av_free(avformat_opts);
627     av_free(sws_opts);
628     av_free(audio_buf);
629     av_free(audio_out);
630     allocated_audio_buf_size= allocated_audio_out_size= 0;
631     av_free(samples);
632
633 #if CONFIG_AVFILTER
634     avfilter_uninit();
635 #endif
636
637     if (received_sigterm) {
638         fprintf(stderr,
639             "Received signal %d: terminating.\n",
640             (int) received_sigterm);
641         exit (255);
642     }
643
644     exit(ret); /* not all OS-es handle main() return value */
645     return ret;
646 }
647
648 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
649 {
650     if(codec && codec->sample_fmts){
651         const enum SampleFormat *p= codec->sample_fmts;
652         for(; *p!=-1; p++){
653             if(*p == st->codec->sample_fmt)
654                 break;
655         }
656         if(*p == -1)
657             st->codec->sample_fmt = codec->sample_fmts[0];
658     }
659 }
660
661 static void choose_sample_rate(AVStream *st, AVCodec *codec)
662 {
663     if(codec && codec->supported_samplerates){
664         const int *p= codec->supported_samplerates;
665         int best=0;
666         int best_dist=INT_MAX;
667         for(; *p; p++){
668             int dist= abs(st->codec->sample_rate - *p);
669             if(dist < best_dist){
670                 best_dist= dist;
671                 best= *p;
672             }
673         }
674         if(best_dist){
675             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
676         }
677         st->codec->sample_rate= best;
678     }
679 }
680
681 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
682 {
683     if(codec && codec->pix_fmts){
684         const enum PixelFormat *p= codec->pix_fmts;
685         for(; *p!=-1; p++){
686             if(*p == st->codec->pix_fmt)
687                 break;
688         }
689         if(*p == -1
690            && !(   st->codec->codec_id==CODEC_ID_MJPEG
691                 && st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL
692                 && (   st->codec->pix_fmt == PIX_FMT_YUV420P
693                     || st->codec->pix_fmt == PIX_FMT_YUV422P)))
694             st->codec->pix_fmt = codec->pix_fmts[0];
695     }
696 }
697
698 static int read_ffserver_streams(AVFormatContext *s, const char *filename)
699 {
700     int i, err;
701     AVFormatContext *ic;
702     int nopts = 0;
703
704     err = av_open_input_file(&ic, filename, NULL, FFM_PACKET_SIZE, NULL);
705     if (err < 0)
706         return err;
707     /* copy stream format */
708     s->nb_streams = ic->nb_streams;
709     for(i=0;i<ic->nb_streams;i++) {
710         AVStream *st;
711         AVCodec *codec;
712
713         // FIXME: a more elegant solution is needed
714         st = av_mallocz(sizeof(AVStream));
715         memcpy(st, ic->streams[i], sizeof(AVStream));
716         st->codec = avcodec_alloc_context();
717         if (!st->codec) {
718             print_error(filename, AVERROR(ENOMEM));
719             ffmpeg_exit(1);
720         }
721         avcodec_copy_context(st->codec, ic->streams[i]->codec);
722         s->streams[i] = st;
723
724         codec = avcodec_find_encoder(st->codec->codec_id);
725         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
726             if (audio_stream_copy) {
727                 st->stream_copy = 1;
728             } else
729                 choose_sample_fmt(st, codec);
730         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
731             if (video_stream_copy) {
732                 st->stream_copy = 1;
733             } else
734                 choose_pixel_fmt(st, codec);
735         }
736
737         if(!st->codec->thread_count)
738             st->codec->thread_count = 1;
739         if(st->codec->thread_count>1)
740             avcodec_thread_init(st->codec, st->codec->thread_count);
741
742         if(st->codec->flags & CODEC_FLAG_BITEXACT)
743             nopts = 1;
744     }
745
746     if (!nopts)
747         s->timestamp = av_gettime();
748
749     av_close_input_file(ic);
750     return 0;
751 }
752
753 static double
754 get_sync_ipts(const AVOutputStream *ost)
755 {
756     const AVInputStream *ist = ost->sync_ist;
757     return (double)(ist->pts - start_time)/AV_TIME_BASE;
758 }
759
760 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
761     int ret;
762
763     while(bsfc){
764         AVPacket new_pkt= *pkt;
765         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
766                                           &new_pkt.data, &new_pkt.size,
767                                           pkt->data, pkt->size,
768                                           pkt->flags & AV_PKT_FLAG_KEY);
769         if(a>0){
770             av_free_packet(pkt);
771             new_pkt.destruct= av_destruct_packet;
772         } else if(a<0){
773             fprintf(stderr, "%s failed for stream %d, codec %s",
774                     bsfc->filter->name, pkt->stream_index,
775                     avctx->codec ? avctx->codec->name : "copy");
776             print_error("", a);
777             if (exit_on_error)
778                 ffmpeg_exit(1);
779         }
780         *pkt= new_pkt;
781
782         bsfc= bsfc->next;
783     }
784
785     ret= av_interleaved_write_frame(s, pkt);
786     if(ret < 0){
787         print_error("av_interleaved_write_frame()", ret);
788         ffmpeg_exit(1);
789     }
790 }
791
792 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
793
794 static void do_audio_out(AVFormatContext *s,
795                          AVOutputStream *ost,
796                          AVInputStream *ist,
797                          unsigned char *buf, int size)
798 {
799     uint8_t *buftmp;
800     int64_t audio_out_size, audio_buf_size;
801     int64_t allocated_for_size= size;
802
803     int size_out, frame_bytes, ret;
804     AVCodecContext *enc= ost->st->codec;
805     AVCodecContext *dec= ist->st->codec;
806     int osize= av_get_bits_per_sample_format(enc->sample_fmt)/8;
807     int isize= av_get_bits_per_sample_format(dec->sample_fmt)/8;
808     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
809
810 need_realloc:
811     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
812     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
813     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
814     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
815     audio_buf_size*= osize*enc->channels;
816
817     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
818     if(coded_bps > 8*osize)
819         audio_out_size= audio_out_size * coded_bps / (8*osize);
820     audio_out_size += FF_MIN_BUFFER_SIZE;
821
822     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
823         fprintf(stderr, "Buffer sizes too large\n");
824         ffmpeg_exit(1);
825     }
826
827     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
828     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
829     if (!audio_buf || !audio_out){
830         fprintf(stderr, "Out of memory in do_audio_out\n");
831         ffmpeg_exit(1);
832     }
833
834     if (enc->channels != dec->channels)
835         ost->audio_resample = 1;
836
837     if (ost->audio_resample && !ost->resample) {
838         if (dec->sample_fmt != SAMPLE_FMT_S16)
839             fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
840         ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
841                                                enc->sample_rate, dec->sample_rate,
842                                                enc->sample_fmt,  dec->sample_fmt,
843                                                16, 10, 0, 0.8);
844         if (!ost->resample) {
845             fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
846                     dec->channels, dec->sample_rate,
847                     enc->channels, enc->sample_rate);
848             ffmpeg_exit(1);
849         }
850     }
851
852 #define MAKE_SFMT_PAIR(a,b) ((a)+SAMPLE_FMT_NB*(b))
853     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
854         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
855         if (ost->reformat_ctx)
856             av_audio_convert_free(ost->reformat_ctx);
857         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
858                                                    dec->sample_fmt, 1, NULL, 0);
859         if (!ost->reformat_ctx) {
860             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
861                 avcodec_get_sample_fmt_name(dec->sample_fmt),
862                 avcodec_get_sample_fmt_name(enc->sample_fmt));
863             ffmpeg_exit(1);
864         }
865         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
866     }
867
868     if(audio_sync_method){
869         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
870                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
871         double idelta= delta*dec->sample_rate / enc->sample_rate;
872         int byte_delta= ((int)idelta)*2*dec->channels;
873
874         //FIXME resample delay
875         if(fabs(delta) > 50){
876             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
877                 if(byte_delta < 0){
878                     byte_delta= FFMAX(byte_delta, -size);
879                     size += byte_delta;
880                     buf  -= byte_delta;
881                     if(verbose > 2)
882                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
883                     if(!size)
884                         return;
885                     ist->is_start=0;
886                 }else{
887                     static uint8_t *input_tmp= NULL;
888                     input_tmp= av_realloc(input_tmp, byte_delta + size);
889
890                     if(byte_delta > allocated_for_size - size){
891                         allocated_for_size= byte_delta + (int64_t)size;
892                         goto need_realloc;
893                     }
894                     ist->is_start=0;
895
896                     memset(input_tmp, 0, byte_delta);
897                     memcpy(input_tmp + byte_delta, buf, size);
898                     buf= input_tmp;
899                     size += byte_delta;
900                     if(verbose > 2)
901                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
902                 }
903             }else if(audio_sync_method>1){
904                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
905                 assert(ost->audio_resample);
906                 if(verbose > 2)
907                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
908 //                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));
909                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
910             }
911         }
912     }else
913         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
914                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
915
916     if (ost->audio_resample) {
917         buftmp = audio_buf;
918         size_out = audio_resample(ost->resample,
919                                   (short *)buftmp, (short *)buf,
920                                   size / (dec->channels * isize));
921         size_out = size_out * enc->channels * osize;
922     } else {
923         buftmp = buf;
924         size_out = size;
925     }
926
927     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
928         const void *ibuf[6]= {buftmp};
929         void *obuf[6]= {audio_buf};
930         int istride[6]= {isize};
931         int ostride[6]= {osize};
932         int len= size_out/istride[0];
933         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
934             printf("av_audio_convert() failed\n");
935             if (exit_on_error)
936                 ffmpeg_exit(1);
937             return;
938         }
939         buftmp = audio_buf;
940         size_out = len*osize;
941     }
942
943     /* now encode as many frames as possible */
944     if (enc->frame_size > 1) {
945         /* output resampled raw samples */
946         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
947             fprintf(stderr, "av_fifo_realloc2() failed\n");
948             ffmpeg_exit(1);
949         }
950         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
951
952         frame_bytes = enc->frame_size * osize * enc->channels;
953
954         while (av_fifo_size(ost->fifo) >= frame_bytes) {
955             AVPacket pkt;
956             av_init_packet(&pkt);
957
958             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
959
960             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
961
962             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
963                                        (short *)audio_buf);
964             if (ret < 0) {
965                 fprintf(stderr, "Audio encoding failed\n");
966                 ffmpeg_exit(1);
967             }
968             audio_size += ret;
969             pkt.stream_index= ost->index;
970             pkt.data= audio_out;
971             pkt.size= ret;
972             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
973                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
974             pkt.flags |= AV_PKT_FLAG_KEY;
975             write_frame(s, &pkt, enc, bitstream_filters[ost->file_index][pkt.stream_index]);
976
977             ost->sync_opts += enc->frame_size;
978         }
979     } else {
980         AVPacket pkt;
981         av_init_packet(&pkt);
982
983         ost->sync_opts += size_out / (osize * enc->channels);
984
985         /* output a pcm frame */
986         /* determine the size of the coded buffer */
987         size_out /= osize;
988         if (coded_bps)
989             size_out = size_out*coded_bps/8;
990
991         if(size_out > audio_out_size){
992             fprintf(stderr, "Internal error, buffer size too small\n");
993             ffmpeg_exit(1);
994         }
995
996         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
997         ret = avcodec_encode_audio(enc, audio_out, size_out,
998                                    (short *)buftmp);
999         if (ret < 0) {
1000             fprintf(stderr, "Audio encoding failed\n");
1001             ffmpeg_exit(1);
1002         }
1003         audio_size += ret;
1004         pkt.stream_index= ost->index;
1005         pkt.data= audio_out;
1006         pkt.size= ret;
1007         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1008             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1009         pkt.flags |= AV_PKT_FLAG_KEY;
1010         write_frame(s, &pkt, enc, bitstream_filters[ost->file_index][pkt.stream_index]);
1011     }
1012 }
1013
1014 static void pre_process_video_frame(AVInputStream *ist, AVPicture *picture, void **bufp)
1015 {
1016     AVCodecContext *dec;
1017     AVPicture *picture2;
1018     AVPicture picture_tmp;
1019     uint8_t *buf = 0;
1020
1021     dec = ist->st->codec;
1022
1023     /* deinterlace : must be done before any resize */
1024     if (do_deinterlace) {
1025         int size;
1026
1027         /* create temporary picture */
1028         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1029         buf = av_malloc(size);
1030         if (!buf)
1031             return;
1032
1033         picture2 = &picture_tmp;
1034         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1035
1036         if(avpicture_deinterlace(picture2, picture,
1037                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1038             /* if error, do not deinterlace */
1039             fprintf(stderr, "Deinterlacing failed\n");
1040             av_free(buf);
1041             buf = NULL;
1042             picture2 = picture;
1043         }
1044     } else {
1045         picture2 = picture;
1046     }
1047
1048     if (picture != picture2)
1049         *picture = *picture2;
1050     *bufp = buf;
1051 }
1052
1053 /* we begin to correct av delay at this threshold */
1054 #define AV_DELAY_MAX 0.100
1055
1056 static void do_subtitle_out(AVFormatContext *s,
1057                             AVOutputStream *ost,
1058                             AVInputStream *ist,
1059                             AVSubtitle *sub,
1060                             int64_t pts)
1061 {
1062     static uint8_t *subtitle_out = NULL;
1063     int subtitle_out_max_size = 1024 * 1024;
1064     int subtitle_out_size, nb, i;
1065     AVCodecContext *enc;
1066     AVPacket pkt;
1067
1068     if (pts == AV_NOPTS_VALUE) {
1069         fprintf(stderr, "Subtitle packets must have a pts\n");
1070         if (exit_on_error)
1071             ffmpeg_exit(1);
1072         return;
1073     }
1074
1075     enc = ost->st->codec;
1076
1077     if (!subtitle_out) {
1078         subtitle_out = av_malloc(subtitle_out_max_size);
1079     }
1080
1081     /* Note: DVB subtitle need one packet to draw them and one other
1082        packet to clear them */
1083     /* XXX: signal it in the codec context ? */
1084     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1085         nb = 2;
1086     else
1087         nb = 1;
1088
1089     for(i = 0; i < nb; i++) {
1090         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1091         // start_display_time is required to be 0
1092         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1093         sub->end_display_time -= sub->start_display_time;
1094         sub->start_display_time = 0;
1095         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1096                                                     subtitle_out_max_size, sub);
1097         if (subtitle_out_size < 0) {
1098             fprintf(stderr, "Subtitle encoding failed\n");
1099             ffmpeg_exit(1);
1100         }
1101
1102         av_init_packet(&pkt);
1103         pkt.stream_index = ost->index;
1104         pkt.data = subtitle_out;
1105         pkt.size = subtitle_out_size;
1106         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1107         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1108             /* XXX: the pts correction is handled here. Maybe handling
1109                it in the codec would be better */
1110             if (i == 0)
1111                 pkt.pts += 90 * sub->start_display_time;
1112             else
1113                 pkt.pts += 90 * sub->end_display_time;
1114         }
1115         write_frame(s, &pkt, ost->st->codec, bitstream_filters[ost->file_index][pkt.stream_index]);
1116     }
1117 }
1118
1119 static int bit_buffer_size= 1024*256;
1120 static uint8_t *bit_buffer= NULL;
1121
1122 static void do_video_out(AVFormatContext *s,
1123                          AVOutputStream *ost,
1124                          AVInputStream *ist,
1125                          AVFrame *in_picture,
1126                          int *frame_size)
1127 {
1128     int nb_frames, i, ret;
1129 #if !CONFIG_AVFILTER
1130     int64_t topBand, bottomBand, leftBand, rightBand;
1131 #endif
1132     AVFrame *final_picture, *formatted_picture, *resampling_dst, *padding_src;
1133     AVFrame picture_crop_temp, picture_pad_temp;
1134     AVCodecContext *enc, *dec;
1135     double sync_ipts;
1136
1137     avcodec_get_frame_defaults(&picture_crop_temp);
1138     avcodec_get_frame_defaults(&picture_pad_temp);
1139
1140     enc = ost->st->codec;
1141     dec = ist->st->codec;
1142
1143     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1144
1145     /* by default, we output a single frame */
1146     nb_frames = 1;
1147
1148     *frame_size = 0;
1149
1150     if(video_sync_method){
1151         double vdelta = sync_ipts - ost->sync_opts;
1152         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1153         if (vdelta < -1.1)
1154             nb_frames = 0;
1155         else if (video_sync_method == 2 || (video_sync_method<0 && (s->oformat->flags & AVFMT_VARIABLE_FPS))){
1156             if(vdelta<=-0.6){
1157                 nb_frames=0;
1158             }else if(vdelta>0.6)
1159             ost->sync_opts= lrintf(sync_ipts);
1160         }else if (vdelta > 1.1)
1161             nb_frames = lrintf(vdelta);
1162 //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);
1163         if (nb_frames == 0){
1164             ++nb_frames_drop;
1165             if (verbose>2)
1166                 fprintf(stderr, "*** drop!\n");
1167         }else if (nb_frames > 1) {
1168             nb_frames_dup += nb_frames - 1;
1169             if (verbose>2)
1170                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1171         }
1172     }else
1173         ost->sync_opts= lrintf(sync_ipts);
1174
1175     nb_frames= FFMIN(nb_frames, max_frames[AVMEDIA_TYPE_VIDEO] - ost->frame_number);
1176     if (nb_frames <= 0)
1177         return;
1178
1179 #if CONFIG_AVFILTER
1180     formatted_picture = in_picture;
1181 #else
1182     if (ost->video_crop) {
1183         if (av_picture_crop((AVPicture *)&picture_crop_temp, (AVPicture *)in_picture, dec->pix_fmt, ost->topBand, ost->leftBand) < 0) {
1184             fprintf(stderr, "error cropping picture\n");
1185             if (exit_on_error)
1186                 ffmpeg_exit(1);
1187             return;
1188         }
1189         formatted_picture = &picture_crop_temp;
1190     } else {
1191         formatted_picture = in_picture;
1192     }
1193 #endif
1194
1195     final_picture = formatted_picture;
1196     padding_src = formatted_picture;
1197     resampling_dst = &ost->pict_tmp;
1198
1199     if(    (ost->resample_height != (ist->st->codec->height - (ost->topBand  + ost->bottomBand)))
1200         || (ost->resample_width  != (ist->st->codec->width  - (ost->leftBand + ost->rightBand)))
1201         || (ost->resample_pix_fmt!= ist->st->codec->pix_fmt) ) {
1202
1203         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));
1204         if(!ost->video_resample)
1205             ffmpeg_exit(1);
1206     }
1207
1208 #if !CONFIG_AVFILTER
1209     if (ost->video_resample) {
1210         padding_src = NULL;
1211         final_picture = &ost->pict_tmp;
1212         if(  (ost->resample_height != (ist->st->codec->height - (ost->topBand  + ost->bottomBand)))
1213           || (ost->resample_width  != (ist->st->codec->width  - (ost->leftBand + ost->rightBand)))
1214           || (ost->resample_pix_fmt!= ist->st->codec->pix_fmt) ) {
1215
1216             /* keep bands proportional to the frame size */
1217             topBand    = ((int64_t)ist->st->codec->height * ost->original_topBand    / ost->original_height) & ~1;
1218             bottomBand = ((int64_t)ist->st->codec->height * ost->original_bottomBand / ost->original_height) & ~1;
1219             leftBand   = ((int64_t)ist->st->codec->width  * ost->original_leftBand   / ost->original_width)  & ~1;
1220             rightBand  = ((int64_t)ist->st->codec->width  * ost->original_rightBand  / ost->original_width)  & ~1;
1221
1222             /* sanity check to ensure no bad band sizes sneak in */
1223             assert(topBand    <= INT_MAX && topBand    >= 0);
1224             assert(bottomBand <= INT_MAX && bottomBand >= 0);
1225             assert(leftBand   <= INT_MAX && leftBand   >= 0);
1226             assert(rightBand  <= INT_MAX && rightBand  >= 0);
1227
1228             ost->topBand    = topBand;
1229             ost->bottomBand = bottomBand;
1230             ost->leftBand   = leftBand;
1231             ost->rightBand  = rightBand;
1232
1233             ost->resample_height = ist->st->codec->height - (ost->topBand  + ost->bottomBand);
1234             ost->resample_width  = ist->st->codec->width  - (ost->leftBand + ost->rightBand);
1235             ost->resample_pix_fmt= ist->st->codec->pix_fmt;
1236
1237             /* initialize a new scaler context */
1238             sws_freeContext(ost->img_resample_ctx);
1239             sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
1240             ost->img_resample_ctx = sws_getContext(
1241                 ist->st->codec->width  - (ost->leftBand + ost->rightBand),
1242                 ist->st->codec->height - (ost->topBand  + ost->bottomBand),
1243                 ist->st->codec->pix_fmt,
1244                 ost->st->codec->width,
1245                 ost->st->codec->height,
1246                 ost->st->codec->pix_fmt,
1247                 sws_flags, NULL, NULL, NULL);
1248             if (ost->img_resample_ctx == NULL) {
1249                 fprintf(stderr, "Cannot get resampling context\n");
1250                 ffmpeg_exit(1);
1251             }
1252         }
1253         sws_scale(ost->img_resample_ctx, formatted_picture->data, formatted_picture->linesize,
1254               0, ost->resample_height, resampling_dst->data, resampling_dst->linesize);
1255     }
1256 #endif
1257
1258     /* duplicates frame if needed */
1259     for(i=0;i<nb_frames;i++) {
1260         AVPacket pkt;
1261         av_init_packet(&pkt);
1262         pkt.stream_index= ost->index;
1263
1264         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1265             /* raw pictures are written as AVPicture structure to
1266                avoid any copies. We support temorarily the older
1267                method. */
1268             AVFrame* old_frame = enc->coded_frame;
1269             enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
1270             pkt.data= (uint8_t *)final_picture;
1271             pkt.size=  sizeof(AVPicture);
1272             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1273             pkt.flags |= AV_PKT_FLAG_KEY;
1274
1275             write_frame(s, &pkt, ost->st->codec, bitstream_filters[ost->file_index][pkt.stream_index]);
1276             enc->coded_frame = old_frame;
1277         } else {
1278             AVFrame big_picture;
1279
1280             big_picture= *final_picture;
1281             /* better than nothing: use input picture interlaced
1282                settings */
1283             big_picture.interlaced_frame = in_picture->interlaced_frame;
1284             if(avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)){
1285                 if(top_field_first == -1)
1286                     big_picture.top_field_first = in_picture->top_field_first;
1287                 else
1288                     big_picture.top_field_first = top_field_first;
1289             }
1290
1291             /* handles sameq here. This is not correct because it may
1292                not be a global option */
1293             big_picture.quality = same_quality ? ist->st->quality : ost->st->quality;
1294             if(!me_threshold)
1295                 big_picture.pict_type = 0;
1296 //            big_picture.pts = AV_NOPTS_VALUE;
1297             big_picture.pts= ost->sync_opts;
1298 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1299 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1300             ret = avcodec_encode_video(enc,
1301                                        bit_buffer, bit_buffer_size,
1302                                        &big_picture);
1303             if (ret < 0) {
1304                 fprintf(stderr, "Video encoding failed\n");
1305                 ffmpeg_exit(1);
1306             }
1307
1308             if(ret>0){
1309                 pkt.data= bit_buffer;
1310                 pkt.size= ret;
1311                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1312                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1313 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1314    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1315    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1316
1317                 if(enc->coded_frame->key_frame)
1318                     pkt.flags |= AV_PKT_FLAG_KEY;
1319                 write_frame(s, &pkt, ost->st->codec, bitstream_filters[ost->file_index][pkt.stream_index]);
1320                 *frame_size = ret;
1321                 video_size += ret;
1322                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1323                 //        enc->frame_number-1, ret, enc->pict_type);
1324                 /* if two pass, output log */
1325                 if (ost->logfile && enc->stats_out) {
1326                     fprintf(ost->logfile, "%s", enc->stats_out);
1327                 }
1328             }
1329         }
1330         ost->sync_opts++;
1331         ost->frame_number++;
1332     }
1333 }
1334
1335 static double psnr(double d){
1336     return -10.0*log(d)/log(10.0);
1337 }
1338
1339 static void do_video_stats(AVFormatContext *os, AVOutputStream *ost,
1340                            int frame_size)
1341 {
1342     AVCodecContext *enc;
1343     int frame_number;
1344     double ti1, bitrate, avg_bitrate;
1345
1346     /* this is executed just the first time do_video_stats is called */
1347     if (!vstats_file) {
1348         vstats_file = fopen(vstats_filename, "w");
1349         if (!vstats_file) {
1350             perror("fopen");
1351             ffmpeg_exit(1);
1352         }
1353     }
1354
1355     enc = ost->st->codec;
1356     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1357         frame_number = ost->frame_number;
1358         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1359         if (enc->flags&CODEC_FLAG_PSNR)
1360             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1361
1362         fprintf(vstats_file,"f_size= %6d ", frame_size);
1363         /* compute pts value */
1364         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1365         if (ti1 < 0.01)
1366             ti1 = 0.01;
1367
1368         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1369         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1370         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1371             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1372         fprintf(vstats_file,"type= %c\n", av_get_pict_type_char(enc->coded_frame->pict_type));
1373     }
1374 }
1375
1376 static void print_report(AVFormatContext **output_files,
1377                          AVOutputStream **ost_table, int nb_ostreams,
1378                          int is_last_report)
1379 {
1380     char buf[1024];
1381     AVOutputStream *ost;
1382     AVFormatContext *oc;
1383     int64_t total_size;
1384     AVCodecContext *enc;
1385     int frame_number, vid, i;
1386     double bitrate, ti1, pts;
1387     static int64_t last_time = -1;
1388     static int qp_histogram[52];
1389
1390     if (!is_last_report) {
1391         int64_t cur_time;
1392         /* display the report every 0.5 seconds */
1393         cur_time = av_gettime();
1394         if (last_time == -1) {
1395             last_time = cur_time;
1396             return;
1397         }
1398         if ((cur_time - last_time) < 500000)
1399             return;
1400         last_time = cur_time;
1401     }
1402
1403
1404     oc = output_files[0];
1405
1406     total_size = url_fsize(oc->pb);
1407     if(total_size<0) // FIXME improve url_fsize() so it works with non seekable output too
1408         total_size= url_ftell(oc->pb);
1409
1410     buf[0] = '\0';
1411     ti1 = 1e10;
1412     vid = 0;
1413     for(i=0;i<nb_ostreams;i++) {
1414         ost = ost_table[i];
1415         enc = ost->st->codec;
1416         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1417             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ",
1418                      !ost->st->stream_copy ?
1419                      enc->coded_frame->quality/(float)FF_QP2LAMBDA : -1);
1420         }
1421         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1422             float t = (av_gettime()-timer_start) / 1000000.0;
1423
1424             frame_number = ost->frame_number;
1425             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1426                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0,
1427                      !ost->st->stream_copy ?
1428                      enc->coded_frame->quality/(float)FF_QP2LAMBDA : -1);
1429             if(is_last_report)
1430                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1431             if(qp_hist){
1432                 int j;
1433                 int qp= lrintf(enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1434                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1435                     qp_histogram[qp]++;
1436                 for(j=0; j<32; j++)
1437                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1438             }
1439             if (enc->flags&CODEC_FLAG_PSNR){
1440                 int j;
1441                 double error, error_sum=0;
1442                 double scale, scale_sum=0;
1443                 char type[3]= {'Y','U','V'};
1444                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1445                 for(j=0; j<3; j++){
1446                     if(is_last_report){
1447                         error= enc->error[j];
1448                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1449                     }else{
1450                         error= enc->coded_frame->error[j];
1451                         scale= enc->width*enc->height*255.0*255.0;
1452                     }
1453                     if(j) scale/=4;
1454                     error_sum += error;
1455                     scale_sum += scale;
1456                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1457                 }
1458                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1459             }
1460             vid = 1;
1461         }
1462         /* compute min output value */
1463         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1464         if ((pts < ti1) && (pts > 0))
1465             ti1 = pts;
1466     }
1467     if (ti1 < 0.01)
1468         ti1 = 0.01;
1469
1470     if (verbose || is_last_report) {
1471         bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1472
1473         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1474             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1475             (double)total_size / 1024, ti1, bitrate);
1476
1477         if (nb_frames_dup || nb_frames_drop)
1478           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1479                   nb_frames_dup, nb_frames_drop);
1480
1481         if (verbose >= 0)
1482             fprintf(stderr, "%s    \r", buf);
1483
1484         fflush(stderr);
1485     }
1486
1487     if (is_last_report && verbose >= 0){
1488         int64_t raw= audio_size + video_size + extra_size;
1489         fprintf(stderr, "\n");
1490         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1491                 video_size/1024.0,
1492                 audio_size/1024.0,
1493                 extra_size/1024.0,
1494                 100.0*(total_size - raw)/raw
1495         );
1496     }
1497 }
1498
1499 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1500 static int output_packet(AVInputStream *ist, int ist_index,
1501                          AVOutputStream **ost_table, int nb_ostreams,
1502                          const AVPacket *pkt)
1503 {
1504     AVFormatContext *os;
1505     AVOutputStream *ost;
1506     int ret, i;
1507     int got_picture;
1508     AVFrame picture;
1509     void *buffer_to_free;
1510     static unsigned int samples_size= 0;
1511     AVSubtitle subtitle, *subtitle_to_free;
1512 #if CONFIG_AVFILTER
1513     int frame_available;
1514 #endif
1515
1516     AVPacket avpkt;
1517     int bps = av_get_bits_per_sample_format(ist->st->codec->sample_fmt)>>3;
1518
1519     if(ist->next_pts == AV_NOPTS_VALUE)
1520         ist->next_pts= ist->pts;
1521
1522     if (pkt == NULL) {
1523         /* EOF handling */
1524         av_init_packet(&avpkt);
1525         avpkt.data = NULL;
1526         avpkt.size = 0;
1527         goto handle_eof;
1528     } else {
1529         avpkt = *pkt;
1530     }
1531
1532     if(pkt->dts != AV_NOPTS_VALUE)
1533         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1534
1535     //while we have more to decode or while the decoder did output something on EOF
1536     while (avpkt.size > 0 || (!pkt && ist->next_pts != ist->pts)) {
1537         uint8_t *data_buf, *decoded_data_buf;
1538         int data_size, decoded_data_size;
1539     handle_eof:
1540         ist->pts= ist->next_pts;
1541
1542         if(avpkt.size && avpkt.size != pkt->size &&
1543            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1544             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1545             ist->showed_multi_packet_warning=1;
1546         }
1547
1548         /* decode the packet if needed */
1549         decoded_data_buf = NULL; /* fail safe */
1550         decoded_data_size= 0;
1551         data_buf  = avpkt.data;
1552         data_size = avpkt.size;
1553         subtitle_to_free = NULL;
1554         if (ist->decoding_needed) {
1555             switch(ist->st->codec->codec_type) {
1556             case AVMEDIA_TYPE_AUDIO:{
1557                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1558                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1559                     av_free(samples);
1560                     samples= av_malloc(samples_size);
1561                 }
1562                 decoded_data_size= samples_size;
1563                     /* XXX: could avoid copy if PCM 16 bits with same
1564                        endianness as CPU */
1565                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1566                                             &avpkt);
1567                 if (ret < 0)
1568                     goto fail_decode;
1569                 avpkt.data += ret;
1570                 avpkt.size -= ret;
1571                 data_size   = ret;
1572                 /* Some bug in mpeg audio decoder gives */
1573                 /* decoded_data_size < 0, it seems they are overflows */
1574                 if (decoded_data_size <= 0) {
1575                     /* no audio frame */
1576                     continue;
1577                 }
1578                 decoded_data_buf = (uint8_t *)samples;
1579                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1580                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1581                 break;}
1582             case AVMEDIA_TYPE_VIDEO:
1583                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1584                     /* XXX: allocate picture correctly */
1585                     avcodec_get_frame_defaults(&picture);
1586
1587                     ret = avcodec_decode_video2(ist->st->codec,
1588                                                 &picture, &got_picture, &avpkt);
1589                     ist->st->quality= picture.quality;
1590                     if (ret < 0)
1591                         goto fail_decode;
1592                     if (!got_picture) {
1593                         /* no picture yet */
1594                         goto discard_packet;
1595                     }
1596                     if (ist->st->codec->time_base.num != 0) {
1597                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1598                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1599                                           ist->st->codec->time_base.num * ticks) /
1600                             ist->st->codec->time_base.den;
1601                     }
1602                     avpkt.size = 0;
1603                     break;
1604             case AVMEDIA_TYPE_SUBTITLE:
1605                 ret = avcodec_decode_subtitle2(ist->st->codec,
1606                                                &subtitle, &got_picture, &avpkt);
1607                 if (ret < 0)
1608                     goto fail_decode;
1609                 if (!got_picture) {
1610                     goto discard_packet;
1611                 }
1612                 subtitle_to_free = &subtitle;
1613                 avpkt.size = 0;
1614                 break;
1615             default:
1616                 goto fail_decode;
1617             }
1618         } else {
1619             switch(ist->st->codec->codec_type) {
1620             case AVMEDIA_TYPE_AUDIO:
1621                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1622                     ist->st->codec->sample_rate;
1623                 break;
1624             case AVMEDIA_TYPE_VIDEO:
1625                 if (ist->st->codec->time_base.num != 0) {
1626                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1627                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1628                                       ist->st->codec->time_base.num * ticks) /
1629                         ist->st->codec->time_base.den;
1630                 }
1631                 break;
1632             }
1633             ret = avpkt.size;
1634             avpkt.size = 0;
1635         }
1636
1637         buffer_to_free = NULL;
1638         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1639             pre_process_video_frame(ist, (AVPicture *)&picture,
1640                                     &buffer_to_free);
1641         }
1642
1643 #if CONFIG_AVFILTER
1644         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ist->input_video_filter) {
1645             // add it to be filtered
1646             av_vsrc_buffer_add_frame(ist->input_video_filter, &picture,
1647                                      ist->pts,
1648                                      ist->st->codec->sample_aspect_ratio);
1649         }
1650 #endif
1651
1652         // preprocess audio (volume)
1653         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1654             if (audio_volume != 256) {
1655                 short *volp;
1656                 volp = samples;
1657                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1658                     int v = ((*volp) * audio_volume + 128) >> 8;
1659                     if (v < -32768) v = -32768;
1660                     if (v >  32767) v = 32767;
1661                     *volp++ = v;
1662                 }
1663             }
1664         }
1665
1666         /* frame rate emulation */
1667         if (rate_emu) {
1668             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1669             int64_t now = av_gettime() - ist->start;
1670             if (pts > now)
1671                 usleep(pts - now);
1672         }
1673 #if CONFIG_AVFILTER
1674         frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1675             !ist->output_video_filter || avfilter_poll_frame(ist->output_video_filter->inputs[0]);
1676 #endif
1677         /* if output time reached then transcode raw format,
1678            encode packets and output them */
1679         if (start_time == 0 || ist->pts >= start_time)
1680 #if CONFIG_AVFILTER
1681         while (frame_available) {
1682             if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ist->output_video_filter)
1683                 get_filtered_video_pic(ist->output_video_filter, &ist->picref, &picture, &ist->pts);
1684 #endif
1685             for(i=0;i<nb_ostreams;i++) {
1686                 int frame_size;
1687
1688                 ost = ost_table[i];
1689                 if (ost->source_index == ist_index) {
1690                     os = output_files[ost->file_index];
1691
1692                     /* set the input output pts pairs */
1693                     //ost->sync_ipts = (double)(ist->pts + input_files_ts_offset[ist->file_index] - start_time)/ AV_TIME_BASE;
1694
1695                     if (ost->encoding_needed) {
1696                         assert(ist->decoding_needed);
1697                         switch(ost->st->codec->codec_type) {
1698                         case AVMEDIA_TYPE_AUDIO:
1699                             do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1700                             break;
1701                         case AVMEDIA_TYPE_VIDEO:
1702 #if CONFIG_AVFILTER
1703                             if (ist->picref->video)
1704                                 ost->st->codec->sample_aspect_ratio = ist->picref->video->pixel_aspect;
1705 #endif
1706                             do_video_out(os, ost, ist, &picture, &frame_size);
1707                             if (vstats_filename && frame_size)
1708                                 do_video_stats(os, ost, frame_size);
1709                             break;
1710                         case AVMEDIA_TYPE_SUBTITLE:
1711                             do_subtitle_out(os, ost, ist, &subtitle,
1712                                             pkt->pts);
1713                             break;
1714                         default:
1715                             abort();
1716                         }
1717                     } else {
1718                         AVFrame avframe; //FIXME/XXX remove this
1719                         AVPacket opkt;
1720                         int64_t ost_tb_start_time= av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1721
1722                         av_init_packet(&opkt);
1723
1724                         if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1725                             continue;
1726
1727                         /* no reencoding needed : output the packet directly */
1728                         /* force the input stream PTS */
1729
1730                         avcodec_get_frame_defaults(&avframe);
1731                         ost->st->codec->coded_frame= &avframe;
1732                         avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1733
1734                         if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1735                             audio_size += data_size;
1736                         else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1737                             video_size += data_size;
1738                             ost->sync_opts++;
1739                         }
1740
1741                         opkt.stream_index= ost->index;
1742                         if(pkt->pts != AV_NOPTS_VALUE)
1743                             opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1744                         else
1745                             opkt.pts= AV_NOPTS_VALUE;
1746
1747                         if (pkt->dts == AV_NOPTS_VALUE)
1748                             opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1749                         else
1750                             opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1751                         opkt.dts -= ost_tb_start_time;
1752
1753                         opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1754                         opkt.flags= pkt->flags;
1755
1756                         //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1757                         if(   ost->st->codec->codec_id != CODEC_ID_H264
1758                            && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1759                            && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1760                            ) {
1761                             if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1762                                 opkt.destruct= av_destruct_packet;
1763                         } else {
1764                             opkt.data = data_buf;
1765                             opkt.size = data_size;
1766                         }
1767
1768                         write_frame(os, &opkt, ost->st->codec, bitstream_filters[ost->file_index][opkt.stream_index]);
1769                         ost->st->codec->frame_number++;
1770                         ost->frame_number++;
1771                         av_free_packet(&opkt);
1772                     }
1773                 }
1774             }
1775
1776 #if CONFIG_AVFILTER
1777             frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1778                               ist->output_video_filter && avfilter_poll_frame(ist->output_video_filter->inputs[0]);
1779             if(ist->picref)
1780                 avfilter_unref_buffer(ist->picref);
1781         }
1782 #endif
1783         av_free(buffer_to_free);
1784         /* XXX: allocate the subtitles in the codec ? */
1785         if (subtitle_to_free) {
1786             if (subtitle_to_free->rects != NULL) {
1787                 for (i = 0; i < subtitle_to_free->num_rects; i++) {
1788                     av_freep(&subtitle_to_free->rects[i]->pict.data[0]);
1789                     av_freep(&subtitle_to_free->rects[i]->pict.data[1]);
1790                     av_freep(&subtitle_to_free->rects[i]);
1791                 }
1792                 av_freep(&subtitle_to_free->rects);
1793             }
1794             subtitle_to_free->num_rects = 0;
1795             subtitle_to_free = NULL;
1796         }
1797     }
1798  discard_packet:
1799     if (pkt == NULL) {
1800         /* EOF handling */
1801
1802         for(i=0;i<nb_ostreams;i++) {
1803             ost = ost_table[i];
1804             if (ost->source_index == ist_index) {
1805                 AVCodecContext *enc= ost->st->codec;
1806                 os = output_files[ost->file_index];
1807
1808                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1809                     continue;
1810                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1811                     continue;
1812
1813                 if (ost->encoding_needed) {
1814                     for(;;) {
1815                         AVPacket pkt;
1816                         int fifo_bytes;
1817                         av_init_packet(&pkt);
1818                         pkt.stream_index= ost->index;
1819
1820                         switch(ost->st->codec->codec_type) {
1821                         case AVMEDIA_TYPE_AUDIO:
1822                             fifo_bytes = av_fifo_size(ost->fifo);
1823                             ret = 0;
1824                             /* encode any samples remaining in fifo */
1825                             if (fifo_bytes > 0) {
1826                                 int osize = av_get_bits_per_sample_format(enc->sample_fmt) >> 3;
1827                                 int fs_tmp = enc->frame_size;
1828
1829                                 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1830                                 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1831                                     enc->frame_size = fifo_bytes / (osize * enc->channels);
1832                                 } else { /* pad */
1833                                     int frame_bytes = enc->frame_size*osize*enc->channels;
1834                                     if (allocated_audio_buf_size < frame_bytes)
1835                                         ffmpeg_exit(1);
1836                                     memset(audio_buf+fifo_bytes, 0, frame_bytes - fifo_bytes);
1837                                 }
1838
1839                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1840                                 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1841                                                           ost->st->time_base.num, enc->sample_rate);
1842                                 enc->frame_size = fs_tmp;
1843                             }
1844                             if(ret <= 0) {
1845                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1846                             }
1847                             if (ret < 0) {
1848                                 fprintf(stderr, "Audio encoding failed\n");
1849                                 ffmpeg_exit(1);
1850                             }
1851                             audio_size += ret;
1852                             pkt.flags |= AV_PKT_FLAG_KEY;
1853                             break;
1854                         case AVMEDIA_TYPE_VIDEO:
1855                             ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1856                             if (ret < 0) {
1857                                 fprintf(stderr, "Video encoding failed\n");
1858                                 ffmpeg_exit(1);
1859                             }
1860                             video_size += ret;
1861                             if(enc->coded_frame && enc->coded_frame->key_frame)
1862                                 pkt.flags |= AV_PKT_FLAG_KEY;
1863                             if (ost->logfile && enc->stats_out) {
1864                                 fprintf(ost->logfile, "%s", enc->stats_out);
1865                             }
1866                             break;
1867                         default:
1868                             ret=-1;
1869                         }
1870
1871                         if(ret<=0)
1872                             break;
1873                         pkt.data= bit_buffer;
1874                         pkt.size= ret;
1875                         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1876                             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1877                         write_frame(os, &pkt, ost->st->codec, bitstream_filters[ost->file_index][pkt.stream_index]);
1878                     }
1879                 }
1880             }
1881         }
1882     }
1883
1884     return 0;
1885  fail_decode:
1886     return -1;
1887 }
1888
1889 static void print_sdp(AVFormatContext **avc, int n)
1890 {
1891     char sdp[2048];
1892
1893     avf_sdp_create(avc, n, sdp, sizeof(sdp));
1894     printf("SDP:\n%s\n", sdp);
1895     fflush(stdout);
1896 }
1897
1898 static int copy_chapters(int infile, int outfile)
1899 {
1900     AVFormatContext *is = input_files[infile];
1901     AVFormatContext *os = output_files[outfile];
1902     int i;
1903
1904     for (i = 0; i < is->nb_chapters; i++) {
1905         AVChapter *in_ch = is->chapters[i], *out_ch;
1906         AVMetadataTag *t = NULL;
1907         int64_t ts_off   = av_rescale_q(start_time - input_files_ts_offset[infile],
1908                                       AV_TIME_BASE_Q, in_ch->time_base);
1909         int64_t rt       = (recording_time == INT64_MAX) ? INT64_MAX :
1910                            av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
1911
1912
1913         if (in_ch->end < ts_off)
1914             continue;
1915         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
1916             break;
1917
1918         out_ch = av_mallocz(sizeof(AVChapter));
1919         if (!out_ch)
1920             return AVERROR(ENOMEM);
1921
1922         out_ch->id        = in_ch->id;
1923         out_ch->time_base = in_ch->time_base;
1924         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
1925         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
1926
1927         while ((t = av_metadata_get(in_ch->metadata, "", t, AV_METADATA_IGNORE_SUFFIX)))
1928             av_metadata_set2(&out_ch->metadata, t->key, t->value, 0);
1929
1930         os->nb_chapters++;
1931         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
1932         if (!os->chapters)
1933             return AVERROR(ENOMEM);
1934         os->chapters[os->nb_chapters - 1] = out_ch;
1935     }
1936     return 0;
1937 }
1938
1939 /*
1940  * The following code is the main loop of the file converter
1941  */
1942 static int transcode(AVFormatContext **output_files,
1943                      int nb_output_files,
1944                      AVFormatContext **input_files,
1945                      int nb_input_files,
1946                      AVStreamMap *stream_maps, int nb_stream_maps)
1947 {
1948     int ret = 0, i, j, k, n, nb_istreams = 0, nb_ostreams = 0;
1949     AVFormatContext *is, *os;
1950     AVCodecContext *codec, *icodec;
1951     AVOutputStream *ost, **ost_table = NULL;
1952     AVInputStream *ist, **ist_table = NULL;
1953     AVInputFile *file_table;
1954     char error[1024];
1955     int key;
1956     int want_sdp = 1;
1957     uint8_t no_packet[MAX_FILES]={0};
1958     int no_packet_count=0;
1959
1960     file_table= av_mallocz(nb_input_files * sizeof(AVInputFile));
1961     if (!file_table)
1962         goto fail;
1963
1964     /* input stream init */
1965     j = 0;
1966     for(i=0;i<nb_input_files;i++) {
1967         is = input_files[i];
1968         file_table[i].ist_index = j;
1969         file_table[i].nb_streams = is->nb_streams;
1970         j += is->nb_streams;
1971     }
1972     nb_istreams = j;
1973
1974     ist_table = av_mallocz(nb_istreams * sizeof(AVInputStream *));
1975     if (!ist_table)
1976         goto fail;
1977
1978     for(i=0;i<nb_istreams;i++) {
1979         ist = av_mallocz(sizeof(AVInputStream));
1980         if (!ist)
1981             goto fail;
1982         ist_table[i] = ist;
1983     }
1984     j = 0;
1985     for(i=0;i<nb_input_files;i++) {
1986         is = input_files[i];
1987         for(k=0;k<is->nb_streams;k++) {
1988             ist = ist_table[j++];
1989             ist->st = is->streams[k];
1990             ist->file_index = i;
1991             ist->index = k;
1992             ist->discard = 1; /* the stream is discarded by default
1993                                  (changed later) */
1994
1995             if (rate_emu) {
1996                 ist->start = av_gettime();
1997             }
1998         }
1999     }
2000
2001     /* output stream init */
2002     nb_ostreams = 0;
2003     for(i=0;i<nb_output_files;i++) {
2004         os = output_files[i];
2005         if (!os->nb_streams) {
2006             dump_format(output_files[i], i, output_files[i]->filename, 1);
2007             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
2008             ret = AVERROR(EINVAL);
2009             goto fail;
2010         }
2011         nb_ostreams += os->nb_streams;
2012     }
2013     if (nb_stream_maps > 0 && nb_stream_maps != nb_ostreams) {
2014         fprintf(stderr, "Number of stream maps must match number of output streams\n");
2015         ret = AVERROR(EINVAL);
2016         goto fail;
2017     }
2018
2019     /* Sanity check the mapping args -- do the input files & streams exist? */
2020     for(i=0;i<nb_stream_maps;i++) {
2021         int fi = stream_maps[i].file_index;
2022         int si = stream_maps[i].stream_index;
2023
2024         if (fi < 0 || fi > nb_input_files - 1 ||
2025             si < 0 || si > file_table[fi].nb_streams - 1) {
2026             fprintf(stderr,"Could not find input stream #%d.%d\n", fi, si);
2027             ret = AVERROR(EINVAL);
2028             goto fail;
2029         }
2030         fi = stream_maps[i].sync_file_index;
2031         si = stream_maps[i].sync_stream_index;
2032         if (fi < 0 || fi > nb_input_files - 1 ||
2033             si < 0 || si > file_table[fi].nb_streams - 1) {
2034             fprintf(stderr,"Could not find sync stream #%d.%d\n", fi, si);
2035             ret = AVERROR(EINVAL);
2036             goto fail;
2037         }
2038     }
2039
2040     ost_table = av_mallocz(sizeof(AVOutputStream *) * nb_ostreams);
2041     if (!ost_table)
2042         goto fail;
2043     for(i=0;i<nb_ostreams;i++) {
2044         ost = av_mallocz(sizeof(AVOutputStream));
2045         if (!ost)
2046             goto fail;
2047         ost_table[i] = ost;
2048     }
2049
2050     n = 0;
2051     for(k=0;k<nb_output_files;k++) {
2052         os = output_files[k];
2053         for(i=0;i<os->nb_streams;i++,n++) {
2054             int found;
2055             ost = ost_table[n];
2056             ost->file_index = k;
2057             ost->index = i;
2058             ost->st = os->streams[i];
2059             if (nb_stream_maps > 0) {
2060                 ost->source_index = file_table[stream_maps[n].file_index].ist_index +
2061                     stream_maps[n].stream_index;
2062
2063                 /* Sanity check that the stream types match */
2064                 if (ist_table[ost->source_index]->st->codec->codec_type != ost->st->codec->codec_type) {
2065                     int i= ost->file_index;
2066                     dump_format(output_files[i], i, output_files[i]->filename, 1);
2067                     fprintf(stderr, "Codec type mismatch for mapping #%d.%d -> #%d.%d\n",
2068                         stream_maps[n].file_index, stream_maps[n].stream_index,
2069                         ost->file_index, ost->index);
2070                     ffmpeg_exit(1);
2071                 }
2072
2073             } else {
2074                 int best_nb_frames=-1;
2075                 /* get corresponding input stream index : we select the first one with the right type */
2076                 found = 0;
2077                 for(j=0;j<nb_istreams;j++) {
2078                     int skip=0;
2079                     ist = ist_table[j];
2080                     if(opt_programid){
2081                         int pi,si;
2082                         AVFormatContext *f= input_files[ ist->file_index ];
2083                         skip=1;
2084                         for(pi=0; pi<f->nb_programs; pi++){
2085                             AVProgram *p= f->programs[pi];
2086                             if(p->id == opt_programid)
2087                                 for(si=0; si<p->nb_stream_indexes; si++){
2088                                     if(f->streams[ p->stream_index[si] ] == ist->st)
2089                                         skip=0;
2090                                 }
2091                         }
2092                     }
2093                     if (ist->discard && ist->st->discard != AVDISCARD_ALL && !skip &&
2094                         ist->st->codec->codec_type == ost->st->codec->codec_type) {
2095                         if(best_nb_frames < ist->st->codec_info_nb_frames){
2096                             best_nb_frames= ist->st->codec_info_nb_frames;
2097                             ost->source_index = j;
2098                             found = 1;
2099                         }
2100                     }
2101                 }
2102
2103                 if (!found) {
2104                     if(! opt_programid) {
2105                         /* try again and reuse existing stream */
2106                         for(j=0;j<nb_istreams;j++) {
2107                             ist = ist_table[j];
2108                             if (   ist->st->codec->codec_type == ost->st->codec->codec_type
2109                                 && ist->st->discard != AVDISCARD_ALL) {
2110                                 ost->source_index = j;
2111                                 found = 1;
2112                             }
2113                         }
2114                     }
2115                     if (!found) {
2116                         int i= ost->file_index;
2117                         dump_format(output_files[i], i, output_files[i]->filename, 1);
2118                         fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",
2119                                 ost->file_index, ost->index);
2120                         ffmpeg_exit(1);
2121                     }
2122                 }
2123             }
2124             ist = ist_table[ost->source_index];
2125             ist->discard = 0;
2126             ost->sync_ist = (nb_stream_maps > 0) ?
2127                 ist_table[file_table[stream_maps[n].sync_file_index].ist_index +
2128                          stream_maps[n].sync_stream_index] : ist;
2129         }
2130     }
2131
2132     /* for each output stream, we compute the right encoding parameters */
2133     for(i=0;i<nb_ostreams;i++) {
2134         AVMetadataTag *t = NULL;
2135         ost = ost_table[i];
2136         os = output_files[ost->file_index];
2137         ist = ist_table[ost->source_index];
2138
2139         codec = ost->st->codec;
2140         icodec = ist->st->codec;
2141
2142         while ((t = av_metadata_get(ist->st->metadata, "", t, AV_METADATA_IGNORE_SUFFIX))) {
2143             av_metadata_set2(&ost->st->metadata, t->key, t->value, AV_METADATA_DONT_OVERWRITE);
2144         }
2145
2146         ost->st->disposition = ist->st->disposition;
2147         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2148         codec->chroma_sample_location = icodec->chroma_sample_location;
2149
2150         if (ost->st->stream_copy) {
2151             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2152
2153             if (extra_size > INT_MAX)
2154                 goto fail;
2155
2156             /* if stream_copy is selected, no need to decode or encode */
2157             codec->codec_id = icodec->codec_id;
2158             codec->codec_type = icodec->codec_type;
2159
2160             if(!codec->codec_tag){
2161                 if(   !os->oformat->codec_tag
2162                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2163                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2164                     codec->codec_tag = icodec->codec_tag;
2165             }
2166
2167             codec->bit_rate = icodec->bit_rate;
2168             codec->extradata= av_mallocz(extra_size);
2169             if (!codec->extradata)
2170                 goto fail;
2171             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2172             codec->extradata_size= icodec->extradata_size;
2173             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){
2174                 codec->time_base = icodec->time_base;
2175                 codec->time_base.num *= icodec->ticks_per_frame;
2176                 av_reduce(&codec->time_base.num, &codec->time_base.den,
2177                           codec->time_base.num, codec->time_base.den, INT_MAX);
2178             }else
2179                 codec->time_base = ist->st->time_base;
2180             switch(codec->codec_type) {
2181             case AVMEDIA_TYPE_AUDIO:
2182                 if(audio_volume != 256) {
2183                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2184                     ffmpeg_exit(1);
2185                 }
2186                 codec->channel_layout = icodec->channel_layout;
2187                 codec->sample_rate = icodec->sample_rate;
2188                 codec->channels = icodec->channels;
2189                 codec->frame_size = icodec->frame_size;
2190                 codec->block_align= icodec->block_align;
2191                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2192                     codec->block_align= 0;
2193                 if(codec->codec_id == CODEC_ID_AC3)
2194                     codec->block_align= 0;
2195                 break;
2196             case AVMEDIA_TYPE_VIDEO:
2197                 codec->pix_fmt = icodec->pix_fmt;
2198                 codec->width = icodec->width;
2199                 codec->height = icodec->height;
2200                 codec->has_b_frames = icodec->has_b_frames;
2201                 break;
2202             case AVMEDIA_TYPE_SUBTITLE:
2203                 codec->width = icodec->width;
2204                 codec->height = icodec->height;
2205                 break;
2206             default:
2207                 abort();
2208             }
2209         } else {
2210             switch(codec->codec_type) {
2211             case AVMEDIA_TYPE_AUDIO:
2212                 ost->fifo= av_fifo_alloc(1024);
2213                 if(!ost->fifo)
2214                     goto fail;
2215                 ost->reformat_pair = MAKE_SFMT_PAIR(SAMPLE_FMT_NONE,SAMPLE_FMT_NONE);
2216                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2217                 icodec->request_channels = codec->channels;
2218                 ist->decoding_needed = 1;
2219                 ost->encoding_needed = 1;
2220                 break;
2221             case AVMEDIA_TYPE_VIDEO:
2222                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2223                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2224                     ffmpeg_exit(1);
2225                 }
2226                 ost->video_crop = ((frame_leftBand + frame_rightBand + frame_topBand + frame_bottomBand) != 0);
2227                 ost->video_resample = ((codec->width != icodec->width -
2228                                 (frame_leftBand + frame_rightBand)) ||
2229                         (codec->height != icodec->height -
2230                                 (frame_topBand  + frame_bottomBand)) ||
2231                         (codec->pix_fmt != icodec->pix_fmt));
2232                 if (ost->video_crop) {
2233                     ost->topBand    = ost->original_topBand    = frame_topBand;
2234                     ost->bottomBand = ost->original_bottomBand = frame_bottomBand;
2235                     ost->leftBand   = ost->original_leftBand   = frame_leftBand;
2236                     ost->rightBand  = ost->original_rightBand  = frame_rightBand;
2237                 }
2238                 if (ost->video_resample) {
2239                     avcodec_get_frame_defaults(&ost->pict_tmp);
2240                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2241                                          codec->width, codec->height)) {
2242                         fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
2243                         ffmpeg_exit(1);
2244                     }
2245                     sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
2246                     ost->img_resample_ctx = sws_getContext(
2247                             icodec->width - (frame_leftBand + frame_rightBand),
2248                             icodec->height - (frame_topBand + frame_bottomBand),
2249                             icodec->pix_fmt,
2250                             codec->width,
2251                             codec->height,
2252                             codec->pix_fmt,
2253                             sws_flags, NULL, NULL, NULL);
2254                     if (ost->img_resample_ctx == NULL) {
2255                         fprintf(stderr, "Cannot get resampling context\n");
2256                         ffmpeg_exit(1);
2257                     }
2258
2259 #if !CONFIG_AVFILTER
2260                     ost->original_height = icodec->height;
2261                     ost->original_width  = icodec->width;
2262 #endif
2263                     codec->bits_per_raw_sample= 0;
2264                 }
2265                 ost->resample_height = icodec->height - (frame_topBand  + frame_bottomBand);
2266                 ost->resample_width  = icodec->width  - (frame_leftBand + frame_rightBand);
2267                 ost->resample_pix_fmt= icodec->pix_fmt;
2268                 ost->encoding_needed = 1;
2269                 ist->decoding_needed = 1;
2270
2271 #if CONFIG_AVFILTER
2272                 if (configure_filters(ist, ost)) {
2273                     fprintf(stderr, "Error opening filters!\n");
2274                     exit(1);
2275                 }
2276 #endif
2277                 break;
2278             case AVMEDIA_TYPE_SUBTITLE:
2279                 ost->encoding_needed = 1;
2280                 ist->decoding_needed = 1;
2281                 break;
2282             default:
2283                 abort();
2284                 break;
2285             }
2286             /* two pass mode */
2287             if (ost->encoding_needed &&
2288                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2289                 char logfilename[1024];
2290                 FILE *f;
2291
2292                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2293                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2294                          i);
2295                 if (codec->flags & CODEC_FLAG_PASS1) {
2296                     f = fopen(logfilename, "wb");
2297                     if (!f) {
2298                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2299                         ffmpeg_exit(1);
2300                     }
2301                     ost->logfile = f;
2302                 } else {
2303                     char  *logbuffer;
2304                     size_t logbuffer_size;
2305                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2306                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2307                         ffmpeg_exit(1);
2308                     }
2309                     codec->stats_in = logbuffer;
2310                 }
2311             }
2312         }
2313         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2314             int size= codec->width * codec->height;
2315             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2316         }
2317     }
2318
2319     if (!bit_buffer)
2320         bit_buffer = av_malloc(bit_buffer_size);
2321     if (!bit_buffer) {
2322         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2323                 bit_buffer_size);
2324         ret = AVERROR(ENOMEM);
2325         goto fail;
2326     }
2327
2328     /* open each encoder */
2329     for(i=0;i<nb_ostreams;i++) {
2330         ost = ost_table[i];
2331         if (ost->encoding_needed) {
2332             AVCodec *codec = output_codecs[i];
2333             if (!codec)
2334                 codec = avcodec_find_encoder(ost->st->codec->codec_id);
2335             if (!codec) {
2336                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2337                          ost->st->codec->codec_id, ost->file_index, ost->index);
2338                 ret = AVERROR(EINVAL);
2339                 goto dump_format;
2340             }
2341             if (avcodec_open(ost->st->codec, codec) < 0) {
2342                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2343                         ost->file_index, ost->index);
2344                 ret = AVERROR(EINVAL);
2345                 goto dump_format;
2346             }
2347             extra_size += ost->st->codec->extradata_size;
2348         }
2349     }
2350
2351     /* open each decoder */
2352     for(i=0;i<nb_istreams;i++) {
2353         ist = ist_table[i];
2354         if (ist->decoding_needed) {
2355             AVCodec *codec = input_codecs[i];
2356             if (!codec)
2357                 codec = avcodec_find_decoder(ist->st->codec->codec_id);
2358             if (!codec) {
2359                 snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
2360                         ist->st->codec->codec_id, ist->file_index, ist->index);
2361                 ret = AVERROR(EINVAL);
2362                 goto dump_format;
2363             }
2364             if (avcodec_open(ist->st->codec, codec) < 0) {
2365                 snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
2366                         ist->file_index, ist->index);
2367                 ret = AVERROR(EINVAL);
2368                 goto dump_format;
2369             }
2370             //if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2371             //    ist->st->codec->flags |= CODEC_FLAG_REPEAT_FIELD;
2372         }
2373     }
2374
2375     /* init pts */
2376     for(i=0;i<nb_istreams;i++) {
2377         AVStream *st;
2378         ist = ist_table[i];
2379         st= ist->st;
2380         ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
2381         ist->next_pts = AV_NOPTS_VALUE;
2382         ist->is_start = 1;
2383     }
2384
2385     /* set meta data information from input file if required */
2386     for (i=0;i<nb_meta_data_maps;i++) {
2387         AVFormatContext *out_file;
2388         AVFormatContext *in_file;
2389         AVMetadataTag *mtag;
2390
2391         int out_file_index = meta_data_maps[i].out_file;
2392         int in_file_index = meta_data_maps[i].in_file;
2393         if (out_file_index < 0 || out_file_index >= nb_output_files) {
2394             snprintf(error, sizeof(error), "Invalid output file index %d map_meta_data(%d,%d)",
2395                      out_file_index, out_file_index, in_file_index);
2396             ret = AVERROR(EINVAL);
2397             goto dump_format;
2398         }
2399         if (in_file_index < 0 || in_file_index >= nb_input_files) {
2400             snprintf(error, sizeof(error), "Invalid input file index %d map_meta_data(%d,%d)",
2401                      in_file_index, out_file_index, in_file_index);
2402             ret = AVERROR(EINVAL);
2403             goto dump_format;
2404         }
2405
2406         out_file = output_files[out_file_index];
2407         in_file = input_files[in_file_index];
2408
2409
2410         mtag=NULL;
2411         while((mtag=av_metadata_get(in_file->metadata, "", mtag, AV_METADATA_IGNORE_SUFFIX)))
2412             av_metadata_set2(&out_file->metadata, mtag->key, mtag->value, AV_METADATA_DONT_OVERWRITE);
2413         av_metadata_conv(out_file, out_file->oformat->metadata_conv,
2414                                     in_file->iformat->metadata_conv);
2415     }
2416
2417     /* copy chapters from the first input file that has them*/
2418     for (i = 0; i < nb_input_files; i++) {
2419         if (!input_files[i]->nb_chapters)
2420             continue;
2421
2422         for (j = 0; j < nb_output_files; j++)
2423             if ((ret = copy_chapters(i, j)) < 0)
2424                 goto dump_format;
2425     }
2426
2427     /* open files and write file headers */
2428     for(i=0;i<nb_output_files;i++) {
2429         os = output_files[i];
2430         if (av_write_header(os) < 0) {
2431             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2432             ret = AVERROR(EINVAL);
2433             goto dump_format;
2434         }
2435         if (strcmp(output_files[i]->oformat->name, "rtp")) {
2436             want_sdp = 0;
2437         }
2438     }
2439
2440  dump_format:
2441     /* dump the file output parameters - cannot be done before in case
2442        of stream copy */
2443     for(i=0;i<nb_output_files;i++) {
2444         dump_format(output_files[i], i, output_files[i]->filename, 1);
2445     }
2446
2447     /* dump the stream mapping */
2448     if (verbose >= 0) {
2449         fprintf(stderr, "Stream mapping:\n");
2450         for(i=0;i<nb_ostreams;i++) {
2451             ost = ost_table[i];
2452             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2453                     ist_table[ost->source_index]->file_index,
2454                     ist_table[ost->source_index]->index,
2455                     ost->file_index,
2456                     ost->index);
2457             if (ost->sync_ist != ist_table[ost->source_index])
2458                 fprintf(stderr, " [sync #%d.%d]",
2459                         ost->sync_ist->file_index,
2460                         ost->sync_ist->index);
2461             fprintf(stderr, "\n");
2462         }
2463     }
2464
2465     if (ret) {
2466         fprintf(stderr, "%s\n", error);
2467         goto fail;
2468     }
2469
2470     if (want_sdp) {
2471         print_sdp(output_files, nb_output_files);
2472     }
2473
2474     if (!using_stdin && verbose >= 0) {
2475         fprintf(stderr, "Press [q] to stop encoding\n");
2476         url_set_interrupt_cb(decode_interrupt_cb);
2477     }
2478     term_init();
2479
2480     timer_start = av_gettime();
2481
2482     for(; received_sigterm == 0;) {
2483         int file_index, ist_index;
2484         AVPacket pkt;
2485         double ipts_min;
2486         double opts_min;
2487
2488     redo:
2489         ipts_min= 1e100;
2490         opts_min= 1e100;
2491         /* if 'q' pressed, exits */
2492         if (!using_stdin) {
2493             if (q_pressed)
2494                 break;
2495             /* read_key() returns 0 on EOF */
2496             key = read_key();
2497             if (key == 'q')
2498                 break;
2499         }
2500
2501         /* select the stream that we must read now by looking at the
2502            smallest output pts */
2503         file_index = -1;
2504         for(i=0;i<nb_ostreams;i++) {
2505             double ipts, opts;
2506             ost = ost_table[i];
2507             os = output_files[ost->file_index];
2508             ist = ist_table[ost->source_index];
2509             if(ist->is_past_recording_time || no_packet[ist->file_index])
2510                 continue;
2511                 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2512             ipts = (double)ist->pts;
2513             if (!file_table[ist->file_index].eof_reached){
2514                 if(ipts < ipts_min) {
2515                     ipts_min = ipts;
2516                     if(input_sync ) file_index = ist->file_index;
2517                 }
2518                 if(opts < opts_min) {
2519                     opts_min = opts;
2520                     if(!input_sync) file_index = ist->file_index;
2521                 }
2522             }
2523             if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
2524                 file_index= -1;
2525                 break;
2526             }
2527         }
2528         /* if none, if is finished */
2529         if (file_index < 0) {
2530             if(no_packet_count){
2531                 no_packet_count=0;
2532                 memset(no_packet, 0, sizeof(no_packet));
2533                 usleep(10000);
2534                 continue;
2535             }
2536             break;
2537         }
2538
2539         /* finish if limit size exhausted */
2540         if (limit_filesize != 0 && limit_filesize <= url_ftell(output_files[0]->pb))
2541             break;
2542
2543         /* read a frame from it and output it in the fifo */
2544         is = input_files[file_index];
2545         ret= av_read_frame(is, &pkt);
2546         if(ret == AVERROR(EAGAIN)){
2547             no_packet[file_index]=1;
2548             no_packet_count++;
2549             continue;
2550         }
2551         if (ret < 0) {
2552             file_table[file_index].eof_reached = 1;
2553             if (opt_shortest)
2554                 break;
2555             else
2556                 continue;
2557         }
2558
2559         no_packet_count=0;
2560         memset(no_packet, 0, sizeof(no_packet));
2561
2562         if (do_pkt_dump) {
2563             av_pkt_dump_log(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump);
2564         }
2565         /* the following test is needed in case new streams appear
2566            dynamically in stream : we ignore them */
2567         if (pkt.stream_index >= file_table[file_index].nb_streams)
2568             goto discard_packet;
2569         ist_index = file_table[file_index].ist_index + pkt.stream_index;
2570         ist = ist_table[ist_index];
2571         if (ist->discard)
2572             goto discard_packet;
2573
2574         if (pkt.dts != AV_NOPTS_VALUE)
2575             pkt.dts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2576         if (pkt.pts != AV_NOPTS_VALUE)
2577             pkt.pts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2578
2579         if(input_files_ts_scale[file_index][pkt.stream_index]){
2580             if(pkt.pts != AV_NOPTS_VALUE)
2581                 pkt.pts *= input_files_ts_scale[file_index][pkt.stream_index];
2582             if(pkt.dts != AV_NOPTS_VALUE)
2583                 pkt.dts *= input_files_ts_scale[file_index][pkt.stream_index];
2584         }
2585
2586 //        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);
2587         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2588             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2589             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2590             int64_t delta= pkt_dts - ist->next_pts;
2591             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2592                 input_files_ts_offset[ist->file_index]-= delta;
2593                 if (verbose > 2)
2594                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n", delta, input_files_ts_offset[ist->file_index]);
2595                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2596                 if(pkt.pts != AV_NOPTS_VALUE)
2597                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2598             }
2599         }
2600
2601         /* finish if recording time exhausted */
2602         if (recording_time != INT64_MAX &&
2603             av_compare_ts(pkt.pts, ist->st->time_base, recording_time + start_time, (AVRational){1, 1000000}) >= 0) {
2604             ist->is_past_recording_time = 1;
2605             goto discard_packet;
2606         }
2607
2608         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->index, pkt.size);
2609         if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
2610
2611             if (verbose >= 0)
2612                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2613                         ist->file_index, ist->index);
2614             if (exit_on_error)
2615                 ffmpeg_exit(1);
2616             av_free_packet(&pkt);
2617             goto redo;
2618         }
2619
2620     discard_packet:
2621         av_free_packet(&pkt);
2622
2623         /* dump report by using the output first video and audio streams */
2624         print_report(output_files, ost_table, nb_ostreams, 0);
2625     }
2626
2627     /* at the end of stream, we must flush the decoder buffers */
2628     for(i=0;i<nb_istreams;i++) {
2629         ist = ist_table[i];
2630         if (ist->decoding_needed) {
2631             output_packet(ist, i, ost_table, nb_ostreams, NULL);
2632         }
2633     }
2634
2635     term_exit();
2636
2637     /* write the trailer if needed and close file */
2638     for(i=0;i<nb_output_files;i++) {
2639         os = output_files[i];
2640         av_write_trailer(os);
2641     }
2642
2643     /* dump report by using the first video and audio streams */
2644     print_report(output_files, ost_table, nb_ostreams, 1);
2645
2646     /* close each encoder */
2647     for(i=0;i<nb_ostreams;i++) {
2648         ost = ost_table[i];
2649         if (ost->encoding_needed) {
2650             av_freep(&ost->st->codec->stats_in);
2651             avcodec_close(ost->st->codec);
2652         }
2653     }
2654
2655     /* close each decoder */
2656     for(i=0;i<nb_istreams;i++) {
2657         ist = ist_table[i];
2658         if (ist->decoding_needed) {
2659             avcodec_close(ist->st->codec);
2660         }
2661     }
2662 #if CONFIG_AVFILTER
2663     if (graph) {
2664         avfilter_graph_destroy(graph);
2665         av_freep(&graph);
2666     }
2667 #endif
2668
2669     /* finished ! */
2670     ret = 0;
2671
2672  fail:
2673     av_freep(&bit_buffer);
2674     av_free(file_table);
2675
2676     if (ist_table) {
2677         for(i=0;i<nb_istreams;i++) {
2678             ist = ist_table[i];
2679             av_free(ist);
2680         }
2681         av_free(ist_table);
2682     }
2683     if (ost_table) {
2684         for(i=0;i<nb_ostreams;i++) {
2685             ost = ost_table[i];
2686             if (ost) {
2687                 if (ost->st->stream_copy)
2688                     av_freep(&ost->st->codec->extradata);
2689                 if (ost->logfile) {
2690                     fclose(ost->logfile);
2691                     ost->logfile = NULL;
2692                 }
2693                 av_fifo_free(ost->fifo); /* works even if fifo is not
2694                                              initialized but set to zero */
2695                 av_free(ost->pict_tmp.data[0]);
2696                 if (ost->video_resample)
2697                     sws_freeContext(ost->img_resample_ctx);
2698                 if (ost->resample)
2699                     audio_resample_close(ost->resample);
2700                 if (ost->reformat_ctx)
2701                     av_audio_convert_free(ost->reformat_ctx);
2702                 av_free(ost);
2703             }
2704         }
2705         av_free(ost_table);
2706     }
2707     return ret;
2708 }
2709
2710 static void opt_format(const char *arg)
2711 {
2712     /* compatibility stuff for pgmyuv */
2713     if (!strcmp(arg, "pgmyuv")) {
2714         pgmyuv_compatibility_hack=1;
2715 //        opt_image_format(arg);
2716         arg = "image2";
2717         fprintf(stderr, "pgmyuv format is deprecated, use image2\n");
2718     }
2719
2720     last_asked_format = arg;
2721 }
2722
2723 static void opt_video_rc_override_string(const char *arg)
2724 {
2725     video_rc_override_string = arg;
2726 }
2727
2728 static int opt_me_threshold(const char *opt, const char *arg)
2729 {
2730     me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2731     return 0;
2732 }
2733
2734 static int opt_verbose(const char *opt, const char *arg)
2735 {
2736     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2737     return 0;
2738 }
2739
2740 static int opt_frame_rate(const char *opt, const char *arg)
2741 {
2742     if (av_parse_video_rate(&frame_rate, arg) < 0) {
2743         fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2744         ffmpeg_exit(1);
2745     }
2746     return 0;
2747 }
2748
2749 static int opt_bitrate(const char *opt, const char *arg)
2750 {
2751     int codec_type = opt[0]=='a' ? AVMEDIA_TYPE_AUDIO : AVMEDIA_TYPE_VIDEO;
2752
2753     opt_default(opt, arg);
2754
2755     if (av_get_int(avcodec_opts[codec_type], "b", NULL) < 1000)
2756         fprintf(stderr, "WARNING: The bitrate parameter is set too low. It takes bits/s as argument, not kbits/s\n");
2757
2758     return 0;
2759 }
2760
2761 static void opt_frame_crop_top(const char *arg)
2762 {
2763     frame_topBand = atoi(arg);
2764     if (frame_topBand < 0) {
2765         fprintf(stderr, "Incorrect top crop size\n");
2766         ffmpeg_exit(1);
2767     }
2768     if ((frame_topBand) >= frame_height){
2769         fprintf(stderr, "Vertical crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");
2770         ffmpeg_exit(1);
2771     }
2772     fprintf(stderr, "-crop* is deprecated in favor of the crop avfilter\n");
2773     frame_height -= frame_topBand;
2774 }
2775
2776 static void opt_frame_crop_bottom(const char *arg)
2777 {
2778     frame_bottomBand = atoi(arg);
2779     if (frame_bottomBand < 0) {
2780         fprintf(stderr, "Incorrect bottom crop size\n");
2781         ffmpeg_exit(1);
2782     }
2783     if ((frame_bottomBand) >= frame_height){
2784         fprintf(stderr, "Vertical crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");
2785         ffmpeg_exit(1);
2786     }
2787     fprintf(stderr, "-crop* is deprecated in favor of the crop avfilter\n");
2788     frame_height -= frame_bottomBand;
2789 }
2790
2791 static void opt_frame_crop_left(const char *arg)
2792 {
2793     frame_leftBand = atoi(arg);
2794     if (frame_leftBand < 0) {
2795         fprintf(stderr, "Incorrect left crop size\n");
2796         ffmpeg_exit(1);
2797     }
2798     if ((frame_leftBand) >= frame_width){
2799         fprintf(stderr, "Horizontal crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");
2800         ffmpeg_exit(1);
2801     }
2802     fprintf(stderr, "-crop* is deprecated in favor of the crop avfilter\n");
2803     frame_width -= frame_leftBand;
2804 }
2805
2806 static void opt_frame_crop_right(const char *arg)
2807 {
2808     frame_rightBand = atoi(arg);
2809     if (frame_rightBand < 0) {
2810         fprintf(stderr, "Incorrect right crop size\n");
2811         ffmpeg_exit(1);
2812     }
2813     if ((frame_rightBand) >= frame_width){
2814         fprintf(stderr, "Horizontal crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");
2815         ffmpeg_exit(1);
2816     }
2817     fprintf(stderr, "-crop* is deprecated in favor of the crop avfilter\n");
2818     frame_width -= frame_rightBand;
2819 }
2820
2821 static void opt_frame_size(const char *arg)
2822 {
2823     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2824         fprintf(stderr, "Incorrect frame size\n");
2825         ffmpeg_exit(1);
2826     }
2827 }
2828
2829 static int opt_pad(const char *opt, const char *arg) {
2830     fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2831     return -1;
2832 }
2833
2834 static void opt_frame_pix_fmt(const char *arg)
2835 {
2836     if (strcmp(arg, "list")) {
2837         frame_pix_fmt = av_get_pix_fmt(arg);
2838         if (frame_pix_fmt == PIX_FMT_NONE) {
2839             fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2840             ffmpeg_exit(1);
2841         }
2842     } else {
2843         show_pix_fmts();
2844         ffmpeg_exit(0);
2845     }
2846 }
2847
2848 static void opt_frame_aspect_ratio(const char *arg)
2849 {
2850     int x = 0, y = 0;
2851     double ar = 0;
2852     const char *p;
2853     char *end;
2854
2855     p = strchr(arg, ':');
2856     if (p) {
2857         x = strtol(arg, &end, 10);
2858         if (end == p)
2859             y = strtol(end+1, &end, 10);
2860         if (x > 0 && y > 0)
2861             ar = (double)x / (double)y;
2862     } else
2863         ar = strtod(arg, NULL);
2864
2865     if (!ar) {
2866         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2867         ffmpeg_exit(1);
2868     }
2869     frame_aspect_ratio = ar;
2870 }
2871
2872 static int opt_metadata(const char *opt, const char *arg)
2873 {
2874     char *mid= strchr(arg, '=');
2875
2876     if(!mid){
2877         fprintf(stderr, "Missing =\n");
2878         ffmpeg_exit(1);
2879     }
2880     *mid++= 0;
2881
2882     metadata_count++;
2883     metadata= av_realloc(metadata, sizeof(*metadata)*metadata_count);
2884     metadata[metadata_count-1].key  = av_strdup(arg);
2885     metadata[metadata_count-1].value= av_strdup(mid);
2886
2887     return 0;
2888 }
2889
2890 static void opt_qscale(const char *arg)
2891 {
2892     video_qscale = atof(arg);
2893     if (video_qscale <= 0 ||
2894         video_qscale > 255) {
2895         fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2896         ffmpeg_exit(1);
2897     }
2898 }
2899
2900 static void opt_top_field_first(const char *arg)
2901 {
2902     top_field_first= atoi(arg);
2903 }
2904
2905 static int opt_thread_count(const char *opt, const char *arg)
2906 {
2907     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2908 #if !HAVE_THREADS
2909     if (verbose >= 0)
2910         fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2911 #endif
2912     return 0;
2913 }
2914
2915 static void opt_audio_sample_fmt(const char *arg)
2916 {
2917     if (strcmp(arg, "list"))
2918         audio_sample_fmt = avcodec_get_sample_fmt(arg);
2919     else {
2920         list_fmts(avcodec_sample_fmt_string, SAMPLE_FMT_NB);
2921         ffmpeg_exit(0);
2922     }
2923 }
2924
2925 static int opt_audio_rate(const char *opt, const char *arg)
2926 {
2927     audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2928     return 0;
2929 }
2930
2931 static int opt_audio_channels(const char *opt, const char *arg)
2932 {
2933     audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2934     return 0;
2935 }
2936
2937 static void opt_video_channel(const char *arg)
2938 {
2939     video_channel = strtol(arg, NULL, 0);
2940 }
2941
2942 static void opt_video_standard(const char *arg)
2943 {
2944     video_standard = av_strdup(arg);
2945 }
2946
2947 static void opt_codec(int *pstream_copy, char **pcodec_name,
2948                       int codec_type, const char *arg)
2949 {
2950     av_freep(pcodec_name);
2951     if (!strcmp(arg, "copy")) {
2952         *pstream_copy = 1;
2953     } else {
2954         *pcodec_name = av_strdup(arg);
2955     }
2956 }
2957
2958 static void opt_audio_codec(const char *arg)
2959 {
2960     opt_codec(&audio_stream_copy, &audio_codec_name, AVMEDIA_TYPE_AUDIO, arg);
2961 }
2962
2963 static void opt_audio_tag(const char *arg)
2964 {
2965     char *tail;
2966     audio_codec_tag= strtol(arg, &tail, 0);
2967
2968     if(!tail || *tail)
2969         audio_codec_tag= arg[0] + (arg[1]<<8) + (arg[2]<<16) + (arg[3]<<24);
2970 }
2971
2972 static void opt_video_tag(const char *arg)
2973 {
2974     char *tail;
2975     video_codec_tag= strtol(arg, &tail, 0);
2976
2977     if(!tail || *tail)
2978         video_codec_tag= arg[0] + (arg[1]<<8) + (arg[2]<<16) + (arg[3]<<24);
2979 }
2980
2981 static void opt_video_codec(const char *arg)
2982 {
2983     opt_codec(&video_stream_copy, &video_codec_name, AVMEDIA_TYPE_VIDEO, arg);
2984 }
2985
2986 static void opt_subtitle_codec(const char *arg)
2987 {
2988     opt_codec(&subtitle_stream_copy, &subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, arg);
2989 }
2990
2991 static void opt_subtitle_tag(const char *arg)
2992 {
2993     char *tail;
2994     subtitle_codec_tag= strtol(arg, &tail, 0);
2995
2996     if(!tail || *tail)
2997         subtitle_codec_tag= arg[0] + (arg[1]<<8) + (arg[2]<<16) + (arg[3]<<24);
2998 }
2999
3000 static void opt_map(const char *arg)
3001 {
3002     AVStreamMap *m;
3003     char *p;
3004
3005     m = &stream_maps[nb_stream_maps++];
3006
3007     m->file_index = strtol(arg, &p, 0);
3008     if (*p)
3009         p++;
3010
3011     m->stream_index = strtol(p, &p, 0);
3012     if (*p) {
3013         p++;
3014         m->sync_file_index = strtol(p, &p, 0);
3015         if (*p)
3016             p++;
3017         m->sync_stream_index = strtol(p, &p, 0);
3018     } else {
3019         m->sync_file_index = m->file_index;
3020         m->sync_stream_index = m->stream_index;
3021     }
3022 }
3023
3024 static void opt_map_meta_data(const char *arg)
3025 {
3026     AVMetaDataMap *m;
3027     char *p;
3028
3029     m = &meta_data_maps[nb_meta_data_maps++];
3030
3031     m->out_file = strtol(arg, &p, 0);
3032     if (*p)
3033         p++;
3034
3035     m->in_file = strtol(p, &p, 0);
3036 }
3037
3038 static void opt_input_ts_scale(const char *arg)
3039 {
3040     unsigned int stream;
3041     double scale;
3042     char *p;
3043
3044     stream = strtol(arg, &p, 0);
3045     if (*p)
3046         p++;
3047     scale= strtod(p, &p);
3048
3049     if(stream >= MAX_STREAMS)
3050         ffmpeg_exit(1);
3051
3052     input_files_ts_scale[nb_input_files][stream]= scale;
3053 }
3054
3055 static int opt_recording_time(const char *opt, const char *arg)
3056 {
3057     recording_time = parse_time_or_die(opt, arg, 1);
3058     return 0;
3059 }
3060
3061 static int opt_start_time(const char *opt, const char *arg)
3062 {
3063     start_time = parse_time_or_die(opt, arg, 1);
3064     return 0;
3065 }
3066
3067 static int opt_recording_timestamp(const char *opt, const char *arg)
3068 {
3069     recording_timestamp = parse_time_or_die(opt, arg, 0) / 1000000;
3070     return 0;
3071 }
3072
3073 static int opt_input_ts_offset(const char *opt, const char *arg)
3074 {
3075     input_ts_offset = parse_time_or_die(opt, arg, 1);
3076     return 0;
3077 }
3078
3079 static enum CodecID find_codec_or_die(const char *name, int type, int encoder, int strict)
3080 {
3081     const char *codec_string = encoder ? "encoder" : "decoder";
3082     AVCodec *codec;
3083
3084     if(!name)
3085         return CODEC_ID_NONE;
3086     codec = encoder ?
3087         avcodec_find_encoder_by_name(name) :
3088         avcodec_find_decoder_by_name(name);
3089     if(!codec) {
3090         fprintf(stderr, "Unknown %s '%s'\n", codec_string, name);
3091         ffmpeg_exit(1);
3092     }
3093     if(codec->type != type) {
3094         fprintf(stderr, "Invalid %s type '%s'\n", codec_string, name);
3095         ffmpeg_exit(1);
3096     }
3097     if(codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
3098        strict > FF_COMPLIANCE_EXPERIMENTAL) {
3099         fprintf(stderr, "%s '%s' is experimental and might produce bad "
3100                 "results.\nAdd '-strict experimental' if you want to use it.\n",
3101                 codec_string, codec->name);
3102         codec = encoder ?
3103             avcodec_find_encoder(codec->id) :
3104             avcodec_find_decoder(codec->id);
3105         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
3106             fprintf(stderr, "Or use the non experimental %s '%s'.\n",
3107                     codec_string, codec->name);
3108         ffmpeg_exit(1);
3109     }
3110     return codec->id;
3111 }
3112
3113 static void opt_input_file(const char *filename)
3114 {
3115     AVFormatContext *ic;
3116     AVFormatParameters params, *ap = &params;
3117     AVInputFormat *file_iformat = NULL;
3118     int err, i, ret, rfps, rfps_base;
3119     int64_t timestamp;
3120
3121     if (last_asked_format) {
3122         if (!(file_iformat = av_find_input_format(last_asked_format))) {
3123             fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
3124             ffmpeg_exit(1);
3125         }
3126         last_asked_format = NULL;
3127     }
3128
3129     if (!strcmp(filename, "-"))
3130         filename = "pipe:";
3131
3132     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3133                     !strcmp(filename, "/dev/stdin");
3134
3135     /* get default parameters from command line */
3136     ic = avformat_alloc_context();
3137     if (!ic) {
3138         print_error(filename, AVERROR(ENOMEM));
3139         ffmpeg_exit(1);
3140     }
3141
3142     memset(ap, 0, sizeof(*ap));
3143     ap->prealloced_context = 1;
3144     ap->sample_rate = audio_sample_rate;
3145     ap->channels = audio_channels;
3146     ap->time_base.den = frame_rate.num;
3147     ap->time_base.num = frame_rate.den;
3148     ap->width = frame_width;
3149     ap->height = frame_height;
3150     ap->pix_fmt = frame_pix_fmt;
3151    // ap->sample_fmt = audio_sample_fmt; //FIXME:not implemented in libavformat
3152     ap->channel = video_channel;
3153     ap->standard = video_standard;
3154
3155     set_context_opts(ic, avformat_opts, AV_OPT_FLAG_DECODING_PARAM);
3156
3157     ic->video_codec_id   =
3158         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0,
3159                           avcodec_opts[AVMEDIA_TYPE_VIDEO   ]->strict_std_compliance);
3160     ic->audio_codec_id   =
3161         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0,
3162                           avcodec_opts[AVMEDIA_TYPE_AUDIO   ]->strict_std_compliance);
3163     ic->subtitle_codec_id=
3164         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0,
3165                           avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->strict_std_compliance);
3166     ic->flags |= AVFMT_FLAG_NONBLOCK;
3167
3168     if(pgmyuv_compatibility_hack)
3169         ic->video_codec_id= CODEC_ID_PGMYUV;
3170
3171     /* open the input file with generic libav function */
3172     err = av_open_input_file(&ic, filename, file_iformat, 0, ap);
3173     if (err < 0) {
3174         print_error(filename, err);
3175         ffmpeg_exit(1);
3176     }
3177     if(opt_programid) {
3178         int i, j;
3179         int found=0;
3180         for(i=0; i<ic->nb_streams; i++){
3181             ic->streams[i]->discard= AVDISCARD_ALL;
3182         }
3183         for(i=0; i<ic->nb_programs; i++){
3184             AVProgram *p= ic->programs[i];
3185             if(p->id != opt_programid){
3186                 p->discard = AVDISCARD_ALL;
3187             }else{
3188                 found=1;
3189                 for(j=0; j<p->nb_stream_indexes; j++){
3190                     ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
3191                 }
3192             }
3193         }
3194         if(!found){
3195             fprintf(stderr, "Specified program id not found\n");
3196             ffmpeg_exit(1);
3197         }
3198         opt_programid=0;
3199     }
3200
3201     ic->loop_input = loop_input;
3202
3203     /* If not enough info to get the stream parameters, we decode the
3204        first frames to get it. (used in mpeg case for example) */
3205     ret = av_find_stream_info(ic);
3206     if (ret < 0 && verbose >= 0) {
3207         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3208         av_close_input_file(ic);
3209         ffmpeg_exit(1);
3210     }
3211
3212     timestamp = start_time;
3213     /* add the stream start time */
3214     if (ic->start_time != AV_NOPTS_VALUE)
3215         timestamp += ic->start_time;
3216
3217     /* if seeking requested, we execute it */
3218     if (start_time != 0) {
3219         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3220         if (ret < 0) {
3221             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3222                     filename, (double)timestamp / AV_TIME_BASE);
3223         }
3224         /* reset seek info */
3225         start_time = 0;
3226     }
3227
3228     /* update the current parameters so that they match the one of the input stream */
3229     for(i=0;i<ic->nb_streams;i++) {
3230         AVStream *st = ic->streams[i];
3231         AVCodecContext *dec = st->codec;
3232         avcodec_thread_init(dec, thread_count);
3233         switch (dec->codec_type) {
3234         case AVMEDIA_TYPE_AUDIO:
3235             set_context_opts(dec, avcodec_opts[AVMEDIA_TYPE_AUDIO], AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM);
3236             //fprintf(stderr, "\nInput Audio channels: %d", dec->channels);
3237             channel_layout    = dec->channel_layout;
3238             audio_channels    = dec->channels;
3239             audio_sample_rate = dec->sample_rate;
3240             audio_sample_fmt  = dec->sample_fmt;
3241             input_codecs[nb_icodecs++] = avcodec_find_decoder_by_name(audio_codec_name);
3242             if(audio_disable)
3243                 st->discard= AVDISCARD_ALL;
3244             /* Note that av_find_stream_info can add more streams, and we
3245              * currently have no chance of setting up lowres decoding
3246              * early enough for them. */
3247             if (dec->lowres)
3248                 audio_sample_rate >>= dec->lowres;
3249             break;
3250         case AVMEDIA_TYPE_VIDEO:
3251             set_context_opts(dec, avcodec_opts[AVMEDIA_TYPE_VIDEO], AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM);
3252             frame_height = dec->height;
3253             frame_width  = dec->width;
3254             if(ic->streams[i]->sample_aspect_ratio.num)
3255                 frame_aspect_ratio=av_q2d(ic->streams[i]->sample_aspect_ratio);
3256             else
3257                 frame_aspect_ratio=av_q2d(dec->sample_aspect_ratio);
3258             frame_aspect_ratio *= (float) dec->width / dec->height;
3259             frame_pix_fmt = dec->pix_fmt;
3260             rfps      = ic->streams[i]->r_frame_rate.num;
3261             rfps_base = ic->streams[i]->r_frame_rate.den;
3262             if (dec->lowres) {
3263                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3264                 frame_height >>= dec->lowres;
3265                 frame_width  >>= dec->lowres;
3266             }
3267             if(me_threshold)
3268                 dec->debug |= FF_DEBUG_MV;
3269
3270             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3271
3272                 if (verbose >= 0)
3273                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3274                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3275
3276                     (float)rfps / rfps_base, rfps, rfps_base);
3277             }
3278             /* update the current frame rate to match the stream frame rate */
3279             frame_rate.num = rfps;
3280             frame_rate.den = rfps_base;
3281
3282             input_codecs[nb_icodecs++] = avcodec_find_decoder_by_name(video_codec_name);
3283             if(video_disable)
3284                 st->discard= AVDISCARD_ALL;
3285             else if(video_discard)
3286                 st->discard= video_discard;
3287             break;
3288         case AVMEDIA_TYPE_DATA:
3289             break;
3290         case AVMEDIA_TYPE_SUBTITLE:
3291             input_codecs[nb_icodecs++] = avcodec_find_decoder_by_name(subtitle_codec_name);
3292             if(subtitle_disable)
3293                 st->discard = AVDISCARD_ALL;
3294             break;
3295         case AVMEDIA_TYPE_ATTACHMENT:
3296         case AVMEDIA_TYPE_UNKNOWN:
3297             nb_icodecs++;
3298             break;
3299         default:
3300             abort();
3301         }
3302     }
3303
3304     input_files[nb_input_files] = ic;
3305     input_files_ts_offset[nb_input_files] = input_ts_offset - (copy_ts ? 0 : timestamp);
3306     /* dump the file content */
3307     if (verbose >= 0)
3308         dump_format(ic, nb_input_files, filename, 0);
3309
3310     nb_input_files++;
3311
3312     video_channel = 0;
3313
3314     av_freep(&video_codec_name);
3315     av_freep(&audio_codec_name);
3316     av_freep(&subtitle_codec_name);
3317 }
3318
3319 static void check_audio_video_sub_inputs(int *has_video_ptr, int *has_audio_ptr,
3320                                          int *has_subtitle_ptr)
3321 {
3322     int has_video, has_audio, has_subtitle, i, j;
3323     AVFormatContext *ic;
3324
3325     has_video = 0;
3326     has_audio = 0;
3327     has_subtitle = 0;
3328     for(j=0;j<nb_input_files;j++) {
3329         ic = input_files[j];
3330         for(i=0;i<ic->nb_streams;i++) {
3331             AVCodecContext *enc = ic->streams[i]->codec;
3332             switch(enc->codec_type) {
3333             case AVMEDIA_TYPE_AUDIO:
3334                 has_audio = 1;
3335                 break;
3336             case AVMEDIA_TYPE_VIDEO:
3337                 has_video = 1;
3338                 break;
3339             case AVMEDIA_TYPE_SUBTITLE:
3340                 has_subtitle = 1;
3341                 break;
3342             case AVMEDIA_TYPE_DATA:
3343             case AVMEDIA_TYPE_ATTACHMENT:
3344             case AVMEDIA_TYPE_UNKNOWN:
3345                 break;
3346             default:
3347                 abort();
3348             }
3349         }
3350     }
3351     *has_video_ptr = has_video;
3352     *has_audio_ptr = has_audio;
3353     *has_subtitle_ptr = has_subtitle;
3354 }
3355
3356 static void new_video_stream(AVFormatContext *oc)
3357 {
3358     AVStream *st;
3359     AVCodecContext *video_enc;
3360     enum CodecID codec_id;
3361
3362     st = av_new_stream(oc, streamid_map[oc->nb_streams]);
3363     if (!st) {
3364         fprintf(stderr, "Could not alloc stream\n");
3365         ffmpeg_exit(1);
3366     }
3367     avcodec_get_context_defaults2(st->codec, AVMEDIA_TYPE_VIDEO);
3368     bitstream_filters[nb_output_files][oc->nb_streams - 1]= video_bitstream_filters;
3369     video_bitstream_filters= NULL;
3370
3371     avcodec_thread_init(st->codec, thread_count);
3372
3373     video_enc = st->codec;
3374
3375     if(video_codec_tag)
3376         video_enc->codec_tag= video_codec_tag;
3377
3378     if(   (video_global_header&1)
3379        || (video_global_header==0 && (oc->oformat->flags & AVFMT_GLOBALHEADER))){
3380         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3381         avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3382     }
3383     if(video_global_header&2){
3384         video_enc->flags2 |= CODEC_FLAG2_LOCAL_HEADER;
3385         avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags2|= CODEC_FLAG2_LOCAL_HEADER;
3386     }
3387
3388     if (video_stream_copy) {
3389         st->stream_copy = 1;
3390         video_enc->codec_type = AVMEDIA_TYPE_VIDEO;
3391         video_enc->sample_aspect_ratio =
3392         st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3393     } else {
3394         const char *p;
3395         int i;
3396         AVCodec *codec;
3397         AVRational fps= frame_rate.num ? frame_rate : (AVRational){25,1};
3398
3399         if (video_codec_name) {
3400             codec_id = find_codec_or_die(video_codec_name, AVMEDIA_TYPE_VIDEO, 1,
3401                                          video_enc->strict_std_compliance);
3402             codec = avcodec_find_encoder_by_name(video_codec_name);
3403             output_codecs[nb_ocodecs] = codec;
3404         } else {
3405             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_VIDEO);
3406             codec = avcodec_find_encoder(codec_id);
3407         }
3408
3409         video_enc->codec_id = codec_id;
3410
3411         set_context_opts(video_enc, avcodec_opts[AVMEDIA_TYPE_VIDEO], AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM);
3412
3413         if (codec && codec->supported_framerates && !force_fps)
3414             fps = codec->supported_framerates[av_find_nearest_q_idx(fps, codec->supported_framerates)];
3415         video_enc->time_base.den = fps.num;
3416         video_enc->time_base.num = fps.den;
3417
3418         video_enc->width = frame_width;
3419         video_enc->height = frame_height;
3420         video_enc->sample_aspect_ratio = av_d2q(frame_aspect_ratio*video_enc->height/video_enc->width, 255);
3421         video_enc->pix_fmt = frame_pix_fmt;
3422         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3423
3424         choose_pixel_fmt(st, codec);
3425
3426         if (intra_only)
3427             video_enc->gop_size = 0;
3428         if (video_qscale || same_quality) {
3429             video_enc->flags |= CODEC_FLAG_QSCALE;
3430             video_enc->global_quality=
3431                 st->quality = FF_QP2LAMBDA * video_qscale;
3432         }
3433
3434         if(intra_matrix)
3435             video_enc->intra_matrix = intra_matrix;
3436         if(inter_matrix)
3437             video_enc->inter_matrix = inter_matrix;
3438
3439         p= video_rc_override_string;
3440         for(i=0; p; i++){
3441             int start, end, q;
3442             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3443             if(e!=3){
3444                 fprintf(stderr, "error parsing rc_override\n");
3445                 ffmpeg_exit(1);
3446             }
3447             video_enc->rc_override=
3448                 av_realloc(video_enc->rc_override,
3449                            sizeof(RcOverride)*(i+1));
3450             video_enc->rc_override[i].start_frame= start;
3451             video_enc->rc_override[i].end_frame  = end;
3452             if(q>0){
3453                 video_enc->rc_override[i].qscale= q;
3454                 video_enc->rc_override[i].quality_factor= 1.0;
3455             }
3456             else{
3457                 video_enc->rc_override[i].qscale= 0;
3458                 video_enc->rc_override[i].quality_factor= -q/100.0;
3459             }
3460             p= strchr(p, '/');
3461             if(p) p++;
3462         }
3463         video_enc->rc_override_count=i;
3464         if (!video_enc->rc_initial_buffer_occupancy)
3465             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3466         video_enc->me_threshold= me_threshold;
3467         video_enc->intra_dc_precision= intra_dc_precision - 8;
3468
3469         if (do_psnr)
3470             video_enc->flags|= CODEC_FLAG_PSNR;
3471
3472         /* two pass mode */
3473         if (do_pass) {
3474             if (do_pass == 1) {
3475                 video_enc->flags |= CODEC_FLAG_PASS1;
3476             } else {
3477                 video_enc->flags |= CODEC_FLAG_PASS2;
3478             }
3479         }
3480     }
3481     nb_ocodecs++;
3482     if (video_language) {
3483         av_metadata_set2(&st->metadata, "language", video_language, 0);
3484         av_freep(&video_language);
3485     }
3486
3487     /* reset some key parameters */
3488     video_disable = 0;
3489     av_freep(&video_codec_name);
3490     video_stream_copy = 0;
3491     frame_pix_fmt = PIX_FMT_NONE;
3492 }
3493
3494 static void new_audio_stream(AVFormatContext *oc)
3495 {
3496     AVStream *st;
3497     AVCodecContext *audio_enc;
3498     enum CodecID codec_id;
3499
3500     st = av_new_stream(oc, streamid_map[oc->nb_streams]);
3501     if (!st) {
3502         fprintf(stderr, "Could not alloc stream\n");
3503         ffmpeg_exit(1);
3504     }
3505     avcodec_get_context_defaults2(st->codec, AVMEDIA_TYPE_AUDIO);
3506
3507     bitstream_filters[nb_output_files][oc->nb_streams - 1]= audio_bitstream_filters;
3508     audio_bitstream_filters= NULL;
3509
3510     avcodec_thread_init(st->codec, thread_count);
3511
3512     audio_enc = st->codec;
3513     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3514
3515     if(audio_codec_tag)
3516         audio_enc->codec_tag= audio_codec_tag;
3517
3518     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3519         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3520         avcodec_opts[AVMEDIA_TYPE_AUDIO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3521     }
3522     if (audio_stream_copy) {
3523         st->stream_copy = 1;
3524         audio_enc->channels = audio_channels;
3525         audio_enc->sample_rate = audio_sample_rate;
3526     } else {
3527         AVCodec *codec;
3528
3529         set_context_opts(audio_enc, avcodec_opts[AVMEDIA_TYPE_AUDIO], AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM);
3530
3531         if (audio_codec_name) {
3532             codec_id = find_codec_or_die(audio_codec_name, AVMEDIA_TYPE_AUDIO, 1,
3533                                          audio_enc->strict_std_compliance);
3534             codec = avcodec_find_encoder_by_name(audio_codec_name);
3535             output_codecs[nb_ocodecs] = codec;
3536         } else {
3537             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_AUDIO);
3538             codec = avcodec_find_encoder(codec_id);
3539         }
3540         audio_enc->codec_id = codec_id;
3541
3542         if (audio_qscale > QSCALE_NONE) {
3543             audio_enc->flags |= CODEC_FLAG_QSCALE;
3544             audio_enc->global_quality = st->quality = FF_QP2LAMBDA * audio_qscale;
3545         }
3546         audio_enc->channels = audio_channels;
3547         audio_enc->sample_fmt = audio_sample_fmt;
3548         audio_enc->sample_rate = audio_sample_rate;
3549         audio_enc->channel_layout = channel_layout;
3550         if (avcodec_channel_layout_num_channels(channel_layout) != audio_channels)
3551             audio_enc->channel_layout = 0;
3552         choose_sample_fmt(st, codec);
3553         choose_sample_rate(st, codec);
3554     }
3555     nb_ocodecs++;
3556     audio_enc->time_base= (AVRational){1, audio_sample_rate};
3557     if (audio_language) {
3558         av_metadata_set2(&st->metadata, "language", audio_language, 0);
3559         av_freep(&audio_language);
3560     }
3561
3562     /* reset some key parameters */
3563     audio_disable = 0;
3564     av_freep(&audio_codec_name);
3565     audio_stream_copy = 0;
3566 }
3567
3568 static void new_subtitle_stream(AVFormatContext *oc)
3569 {
3570     AVStream *st;
3571     AVCodecContext *subtitle_enc;
3572
3573     st = av_new_stream(oc, streamid_map[oc->nb_streams]);
3574     if (!st) {
3575         fprintf(stderr, "Could not alloc stream\n");
3576         ffmpeg_exit(1);
3577     }
3578     avcodec_get_context_defaults2(st->codec, AVMEDIA_TYPE_SUBTITLE);
3579
3580     bitstream_filters[nb_output_files][oc->nb_streams - 1]= subtitle_bitstream_filters;
3581     subtitle_bitstream_filters= NULL;
3582
3583     subtitle_enc = st->codec;
3584     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3585
3586     if(subtitle_codec_tag)
3587         subtitle_enc->codec_tag= subtitle_codec_tag;
3588
3589     if (subtitle_stream_copy) {
3590         st->stream_copy = 1;
3591     } else {
3592         set_context_opts(avcodec_opts[AVMEDIA_TYPE_SUBTITLE], subtitle_enc, AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_ENCODING_PARAM);
3593         subtitle_enc->codec_id = find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 1,
3594                                                    subtitle_enc->strict_std_compliance);
3595         output_codecs[nb_ocodecs] = avcodec_find_encoder_by_name(subtitle_codec_name);
3596     }
3597     nb_ocodecs++;
3598
3599     if (subtitle_language) {
3600         av_metadata_set2(&st->metadata, "language", subtitle_language, 0);
3601         av_freep(&subtitle_language);
3602     }
3603
3604     subtitle_disable = 0;
3605     av_freep(&subtitle_codec_name);
3606     subtitle_stream_copy = 0;
3607 }
3608
3609 static void opt_new_stream(const char *opt, const char *arg)
3610 {
3611     AVFormatContext *oc;
3612     if (nb_output_files <= 0) {
3613         fprintf(stderr, "At least one output file must be specified\n");
3614         ffmpeg_exit(1);
3615     }
3616     oc = output_files[nb_output_files - 1];
3617
3618     if      (!strcmp(opt, "newvideo"   )) new_video_stream   (oc);
3619     else if (!strcmp(opt, "newaudio"   )) new_audio_stream   (oc);
3620     else if (!strcmp(opt, "newsubtitle")) new_subtitle_stream(oc);
3621     else assert(0);
3622 }
3623
3624 /* arg format is "output-stream-index:streamid-value". */
3625 static void opt_streamid(const char *opt, const char *arg)
3626 {
3627     int idx;
3628     char *p;
3629     char idx_str[16];
3630
3631     strncpy(idx_str, arg, sizeof(idx_str));
3632     idx_str[sizeof(idx_str)-1] = '\0';
3633     p = strchr(idx_str, ':');
3634     if (!p) {
3635         fprintf(stderr,
3636                 "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3637                 arg, opt);
3638         ffmpeg_exit(1);
3639     }
3640     *p++ = '\0';
3641     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, MAX_STREAMS-1);
3642     streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3643 }
3644
3645 static void opt_output_file(const char *filename)
3646 {
3647     AVFormatContext *oc;
3648     int err, use_video, use_audio, use_subtitle;
3649     int input_has_video, input_has_audio, input_has_subtitle;
3650     AVFormatParameters params, *ap = &params;
3651     AVOutputFormat *file_oformat;
3652
3653     if (!strcmp(filename, "-"))
3654         filename = "pipe:";
3655
3656     oc = avformat_alloc_context();
3657     if (!oc) {
3658         print_error(filename, AVERROR(ENOMEM));
3659         ffmpeg_exit(1);
3660     }
3661
3662     if (last_asked_format) {
3663         file_oformat = av_guess_format(last_asked_format, NULL, NULL);
3664         if (!file_oformat) {
3665             fprintf(stderr, "Requested output format '%s' is not a suitable output format\n", last_asked_format);
3666             ffmpeg_exit(1);
3667         }
3668         last_asked_format = NULL;
3669     } else {
3670         file_oformat = av_guess_format(NULL, filename, NULL);
3671         if (!file_oformat) {
3672             fprintf(stderr, "Unable to find a suitable output format for '%s'\n",
3673                     filename);
3674             ffmpeg_exit(1);
3675         }
3676     }
3677
3678     oc->oformat = file_oformat;
3679     av_strlcpy(oc->filename, filename, sizeof(oc->filename));
3680
3681     if (!strcmp(file_oformat->name, "ffm") &&
3682         av_strstart(filename, "http:", NULL)) {
3683         /* special case for files sent to ffserver: we get the stream
3684            parameters from ffserver */
3685         int err = read_ffserver_streams(oc, filename);
3686         if (err < 0) {
3687             print_error(filename, err);