Add a -force_key_frames option to ffmpeg.
[ffmpeg.git] / ffmpeg.c
1 /*
2  * FFmpeg main
3  * Copyright (c) 2000-2003 Fabrice Bellard
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21
22 /* needed for usleep() */
23 #define _XOPEN_SOURCE 600
24
25 #include "config.h"
26 #include <ctype.h>
27 #include <string.h>
28 #include <math.h>
29 #include <stdlib.h>
30 #include <errno.h>
31 #include <signal.h>
32 #include <limits.h>
33 #include <unistd.h>
34 #include "libavformat/avformat.h"
35 #include "libavdevice/avdevice.h"
36 #include "libswscale/swscale.h"
37 #include "libavcodec/opt.h"
38 #include "libavcodec/audioconvert.h"
39 #include "libavcore/parseutils.h"
40 #include "libavutil/colorspace.h"
41 #include "libavutil/fifo.h"
42 #include "libavutil/pixdesc.h"
43 #include "libavutil/avstring.h"
44 #include "libavutil/libm.h"
45 #include "libavformat/os_support.h"
46
47 #if CONFIG_AVFILTER
48 # include "libavfilter/avfilter.h"
49 # include "libavfilter/avfiltergraph.h"
50 # include "libavfilter/graphparser.h"
51 # include "libavfilter/vsrc_buffer.h"
52 #endif
53
54 #if HAVE_SYS_RESOURCE_H
55 #include <sys/types.h>
56 #include <sys/time.h>
57 #include <sys/resource.h>
58 #elif HAVE_GETPROCESSTIMES
59 #include <windows.h>
60 #endif
61 #if HAVE_GETPROCESSMEMORYINFO
62 #include <windows.h>
63 #include <psapi.h>
64 #endif
65
66 #if HAVE_SYS_SELECT_H
67 #include <sys/select.h>
68 #endif
69
70 #if HAVE_TERMIOS_H
71 #include <fcntl.h>
72 #include <sys/ioctl.h>
73 #include <sys/time.h>
74 #include <termios.h>
75 #elif HAVE_CONIO_H
76 #include <conio.h>
77 #endif
78 #include <time.h>
79
80 #include "cmdutils.h"
81
82 #include "libavutil/avassert.h"
83
84 const char program_name[] = "FFmpeg";
85 const int program_birth_year = 2000;
86
87 /* select an input stream for an output stream */
88 typedef struct AVStreamMap {
89     int file_index;
90     int stream_index;
91     int sync_file_index;
92     int sync_stream_index;
93 } AVStreamMap;
94
95 /**
96  * select an input file for an output file
97  */
98 typedef struct AVMetaDataMap {
99     int out_file;
100     int in_file;
101 } AVMetaDataMap;
102
103 static const OptionDef options[];
104
105 #define MAX_FILES 100
106 #if !FF_API_MAX_STREAMS
107 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
108 #endif
109
110 static const char *last_asked_format = NULL;
111 static AVFormatContext *input_files[MAX_FILES];
112 static int64_t input_files_ts_offset[MAX_FILES];
113 static double *input_files_ts_scale[MAX_FILES] = {NULL};
114 static AVCodec **input_codecs = NULL;
115 static int nb_input_files = 0;
116 static int nb_input_codecs = 0;
117 static int nb_input_files_ts_scale[MAX_FILES] = {0};
118
119 static AVFormatContext *output_files[MAX_FILES];
120 static AVCodec **output_codecs = NULL;
121 static int nb_output_files = 0;
122 static int nb_output_codecs = 0;
123
124 static AVStreamMap *stream_maps = NULL;
125 static int nb_stream_maps;
126
127 static AVMetaDataMap meta_data_maps[MAX_FILES];
128 static int nb_meta_data_maps;
129
130 /* indexed by output file stream index */
131 static int *streamid_map = NULL;
132 static int nb_streamid_map = 0;
133
134 static int frame_width  = 0;
135 static int frame_height = 0;
136 static float frame_aspect_ratio = 0;
137 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
138 static enum SampleFormat audio_sample_fmt = SAMPLE_FMT_NONE;
139 static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
140 static AVRational frame_rate;
141 static float video_qscale = 0;
142 static uint16_t *intra_matrix = NULL;
143 static uint16_t *inter_matrix = NULL;
144 static const char *video_rc_override_string=NULL;
145 static int video_disable = 0;
146 static int video_discard = 0;
147 static char *video_codec_name = NULL;
148 static unsigned int video_codec_tag = 0;
149 static char *video_language = NULL;
150 static int same_quality = 0;
151 static int do_deinterlace = 0;
152 static int top_field_first = -1;
153 static int me_threshold = 0;
154 static int intra_dc_precision = 8;
155 static int loop_input = 0;
156 static int loop_output = AVFMT_NOOUTPUTLOOP;
157 static int qp_hist = 0;
158 #if CONFIG_AVFILTER
159 static char *vfilters = NULL;
160 AVFilterGraph *graph = NULL;
161 #endif
162
163 static int intra_only = 0;
164 static int audio_sample_rate = 44100;
165 static int64_t channel_layout = 0;
166 #define QSCALE_NONE -99999
167 static float audio_qscale = QSCALE_NONE;
168 static int audio_disable = 0;
169 static int audio_channels = 1;
170 static char  *audio_codec_name = NULL;
171 static unsigned int audio_codec_tag = 0;
172 static char *audio_language = NULL;
173
174 static int subtitle_disable = 0;
175 static char *subtitle_codec_name = NULL;
176 static char *subtitle_language = NULL;
177 static unsigned int subtitle_codec_tag = 0;
178
179 static float mux_preload= 0.5;
180 static float mux_max_delay= 0.7;
181
182 static int64_t recording_time = INT64_MAX;
183 static int64_t start_time = 0;
184 static int64_t recording_timestamp = 0;
185 static int64_t input_ts_offset = 0;
186 static int file_overwrite = 0;
187 static AVMetadata *metadata;
188 static int do_benchmark = 0;
189 static int do_hex_dump = 0;
190 static int do_pkt_dump = 0;
191 static int do_psnr = 0;
192 static int do_pass = 0;
193 static char *pass_logfilename_prefix = NULL;
194 static int audio_stream_copy = 0;
195 static int video_stream_copy = 0;
196 static int subtitle_stream_copy = 0;
197 static int video_sync_method= -1;
198 static int audio_sync_method= 0;
199 static float audio_drift_threshold= 0.1;
200 static int copy_ts= 0;
201 static int opt_shortest = 0;
202 static int video_global_header = 0;
203 static char *vstats_filename;
204 static FILE *vstats_file;
205 static int opt_programid = 0;
206 static int copy_initial_nonkeyframes = 0;
207
208 static int rate_emu = 0;
209
210 static int  video_channel = 0;
211 static char *video_standard;
212
213 static int audio_volume = 256;
214
215 static int exit_on_error = 0;
216 static int using_stdin = 0;
217 static int verbose = 1;
218 static int thread_count= 1;
219 static int q_pressed = 0;
220 static int64_t video_size = 0;
221 static int64_t audio_size = 0;
222 static int64_t extra_size = 0;
223 static int nb_frames_dup = 0;
224 static int nb_frames_drop = 0;
225 static int input_sync;
226 static uint64_t limit_filesize = 0;
227 static int force_fps = 0;
228 static char *forced_key_frames = NULL;
229
230 static int pgmyuv_compatibility_hack=0;
231 static float dts_delta_threshold = 10;
232
233 static unsigned int sws_flags = SWS_BICUBIC;
234
235 static int64_t timer_start;
236
237 static uint8_t *audio_buf;
238 static uint8_t *audio_out;
239 unsigned int allocated_audio_out_size, allocated_audio_buf_size;
240
241 static short *samples;
242
243 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
244 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
245 static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL;
246
247 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
248
249 struct AVInputStream;
250
251 typedef struct AVOutputStream {
252     int file_index;          /* file index */
253     int index;               /* stream index in the output file */
254     int source_index;        /* AVInputStream index */
255     AVStream *st;            /* stream in the output file */
256     int encoding_needed;     /* true if encoding needed for this stream */
257     int frame_number;
258     /* input pts and corresponding output pts
259        for A/V sync */
260     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
261     struct AVInputStream *sync_ist; /* input stream to sync against */
262     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
263     AVBitStreamFilterContext *bitstream_filters;
264     /* video only */
265     int video_resample;
266     AVFrame pict_tmp;      /* temporary image for resampling */
267     struct SwsContext *img_resample_ctx; /* for image resampling */
268     int resample_height;
269     int resample_width;
270     int resample_pix_fmt;
271
272     /* full frame size of first frame */
273     int original_height;
274     int original_width;
275
276     /* forced key frames */
277     int64_t *forced_kf_pts;
278     int forced_kf_count;
279     int forced_kf_index;
280
281     /* audio only */
282     int audio_resample;
283     ReSampleContext *resample; /* for audio resampling */
284     int reformat_pair;
285     AVAudioConvert *reformat_ctx;
286     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
287     FILE *logfile;
288 } AVOutputStream;
289
290 static AVOutputStream **output_streams_for_file[MAX_FILES] = { NULL };
291 static int nb_output_streams_for_file[MAX_FILES] = { 0 };
292
293 typedef struct AVInputStream {
294     int file_index;
295     int index;
296     AVStream *st;
297     int discard;             /* true if stream data should be discarded */
298     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
299     int64_t sample_index;      /* current sample */
300
301     int64_t       start;     /* time when read started */
302     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
303                                 is not defined */
304     int64_t       pts;       /* current pts */
305     PtsCorrectionContext pts_ctx;
306     int is_start;            /* is 1 at the start and after a discontinuity */
307     int showed_multi_packet_warning;
308     int is_past_recording_time;
309 #if CONFIG_AVFILTER
310     AVFilterContext *output_video_filter;
311     AVFilterContext *input_video_filter;
312     AVFrame *filter_frame;
313     int has_filter_frame;
314     AVFilterBufferRef *picref;
315 #endif
316 } AVInputStream;
317
318 typedef struct AVInputFile {
319     int eof_reached;      /* true if eof reached */
320     int ist_index;        /* index of first stream in ist_table */
321     int buffer_size;      /* current total buffer size */
322     int nb_streams;       /* nb streams we are aware of */
323 } AVInputFile;
324
325 #if HAVE_TERMIOS_H
326
327 /* init terminal so that we can grab keys */
328 static struct termios oldtty;
329 #endif
330
331 #if CONFIG_AVFILTER
332
333 static int configure_filters(AVInputStream *ist, AVOutputStream *ost)
334 {
335     AVFilterContext *last_filter, *filter;
336     /** filter graph containing all filters including input & output */
337     AVCodecContext *codec = ost->st->codec;
338     AVCodecContext *icodec = ist->st->codec;
339     FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
340     char args[255];
341     int ret;
342
343     graph = av_mallocz(sizeof(AVFilterGraph));
344
345     if ((ret = avfilter_open(&ist->input_video_filter, avfilter_get_by_name("buffer"), "src")) < 0)
346         return ret;
347     if ((ret = avfilter_open(&ist->output_video_filter, &ffsink, "out")) < 0)
348         return ret;
349
350     snprintf(args, 255, "%d:%d:%d:%d:%d", ist->st->codec->width,
351              ist->st->codec->height, ist->st->codec->pix_fmt,
352              ist->st->time_base.num, ist->st->time_base.den);
353     if ((ret = avfilter_init_filter(ist->input_video_filter, args, NULL)) < 0)
354         return ret;
355     if ((ret = avfilter_init_filter(ist->output_video_filter, NULL, &ffsink_ctx)) < 0)
356         return ret;
357
358     /* add input and output filters to the overall graph */
359     avfilter_graph_add_filter(graph, ist->input_video_filter);
360     avfilter_graph_add_filter(graph, ist->output_video_filter);
361
362     last_filter = ist->input_video_filter;
363
364     if (codec->width  != icodec->width || codec->height != icodec->height) {
365         snprintf(args, 255, "%d:%d:flags=0x%X",
366                  codec->width,
367                  codec->height,
368                  (int)av_get_int(sws_opts, "sws_flags", NULL));
369         if ((ret = avfilter_open(&filter, avfilter_get_by_name("scale"), NULL)) < 0)
370             return ret;
371         if ((ret = avfilter_init_filter(filter, args, NULL)) < 0)
372             return ret;
373         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
374             return ret;
375         last_filter = filter;
376         avfilter_graph_add_filter(graph, last_filter);
377     }
378
379     snprintf(args, sizeof(args), "flags=0x%X", (int)av_get_int(sws_opts, "sws_flags", NULL));
380     graph->scale_sws_opts = av_strdup(args);
381
382     if (vfilters) {
383         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
384         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
385
386         outputs->name    = av_strdup("in");
387         outputs->filter  = last_filter;
388         outputs->pad_idx = 0;
389         outputs->next    = NULL;
390
391         inputs->name    = av_strdup("out");
392         inputs->filter  = ist->output_video_filter;
393         inputs->pad_idx = 0;
394         inputs->next    = NULL;
395
396         if ((ret = avfilter_graph_parse(graph, vfilters, inputs, outputs, NULL)) < 0)
397             return ret;
398         av_freep(&vfilters);
399     } else {
400         if ((ret = avfilter_link(last_filter, 0, ist->output_video_filter, 0)) < 0)
401             return ret;
402     }
403
404     if ((ret = avfilter_graph_config(graph, NULL)) < 0)
405         return ret;
406
407     codec->width  = ist->output_video_filter->inputs[0]->w;
408     codec->height = ist->output_video_filter->inputs[0]->h;
409
410     return 0;
411 }
412 #endif /* CONFIG_AVFILTER */
413
414 static void term_exit(void)
415 {
416     av_log(NULL, AV_LOG_QUIET, "");
417 #if HAVE_TERMIOS_H
418     tcsetattr (0, TCSANOW, &oldtty);
419 #endif
420 }
421
422 static volatile int received_sigterm = 0;
423
424 static void
425 sigterm_handler(int sig)
426 {
427     received_sigterm = sig;
428     term_exit();
429 }
430
431 static void term_init(void)
432 {
433 #if HAVE_TERMIOS_H
434     struct termios tty;
435
436     tcgetattr (0, &tty);
437     oldtty = tty;
438     atexit(term_exit);
439
440     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
441                           |INLCR|IGNCR|ICRNL|IXON);
442     tty.c_oflag |= OPOST;
443     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
444     tty.c_cflag &= ~(CSIZE|PARENB);
445     tty.c_cflag |= CS8;
446     tty.c_cc[VMIN] = 1;
447     tty.c_cc[VTIME] = 0;
448
449     tcsetattr (0, TCSANOW, &tty);
450     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
451 #endif
452
453     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
454     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
455 #ifdef SIGXCPU
456     signal(SIGXCPU, sigterm_handler);
457 #endif
458 }
459
460 /* read a key without blocking */
461 static int read_key(void)
462 {
463 #if HAVE_TERMIOS_H
464     int n = 1;
465     unsigned char ch;
466     struct timeval tv;
467     fd_set rfds;
468
469     FD_ZERO(&rfds);
470     FD_SET(0, &rfds);
471     tv.tv_sec = 0;
472     tv.tv_usec = 0;
473     n = select(1, &rfds, NULL, NULL, &tv);
474     if (n > 0) {
475         n = read(0, &ch, 1);
476         if (n == 1)
477             return ch;
478
479         return n;
480     }
481 #elif HAVE_CONIO_H
482     if(kbhit())
483         return(getch());
484 #endif
485     return -1;
486 }
487
488 static int decode_interrupt_cb(void)
489 {
490     return q_pressed || (q_pressed = read_key() == 'q');
491 }
492
493 static int ffmpeg_exit(int ret)
494 {
495     int i;
496
497     /* close files */
498     for(i=0;i<nb_output_files;i++) {
499         /* maybe av_close_output_file ??? */
500         AVFormatContext *s = output_files[i];
501         int j;
502         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
503             url_fclose(s->pb);
504         for(j=0;j<s->nb_streams;j++) {
505             av_metadata_free(&s->streams[j]->metadata);
506             av_free(s->streams[j]->codec);
507             av_free(s->streams[j]->info);
508             av_free(s->streams[j]);
509         }
510         for(j=0;j<s->nb_programs;j++) {
511             av_metadata_free(&s->programs[j]->metadata);
512         }
513         for(j=0;j<s->nb_chapters;j++) {
514             av_metadata_free(&s->chapters[j]->metadata);
515         }
516         av_metadata_free(&s->metadata);
517         av_free(s);
518         av_free(output_streams_for_file[i]);
519     }
520     for(i=0;i<nb_input_files;i++) {
521         av_close_input_file(input_files[i]);
522         av_free(input_files_ts_scale[i]);
523     }
524
525     av_free(intra_matrix);
526     av_free(inter_matrix);
527
528     if (vstats_file)
529         fclose(vstats_file);
530     av_free(vstats_filename);
531
532     av_free(opt_names);
533     av_free(streamid_map);
534     av_free(input_codecs);
535     av_free(output_codecs);
536     av_free(stream_maps);
537
538     av_free(video_codec_name);
539     av_free(audio_codec_name);
540     av_free(subtitle_codec_name);
541
542     av_free(video_standard);
543
544     uninit_opts();
545     av_free(audio_buf);
546     av_free(audio_out);
547     allocated_audio_buf_size= allocated_audio_out_size= 0;
548     av_free(samples);
549
550 #if CONFIG_AVFILTER
551     avfilter_uninit();
552 #endif
553
554     if (received_sigterm) {
555         fprintf(stderr,
556             "Received signal %d: terminating.\n",
557             (int) received_sigterm);
558         exit (255);
559     }
560
561     exit(ret); /* not all OS-es handle main() return value */
562     return ret;
563 }
564
565 /* similar to ff_dynarray_add() and av_fast_realloc() */
566 static void *grow_array(void *array, int elem_size, int *size, int new_size)
567 {
568     if (new_size >= INT_MAX / elem_size) {
569         fprintf(stderr, "Array too big.\n");
570         ffmpeg_exit(1);
571     }
572     if (*size < new_size) {
573         uint8_t *tmp = av_realloc(array, new_size*elem_size);
574         if (!tmp) {
575             fprintf(stderr, "Could not alloc buffer.\n");
576             ffmpeg_exit(1);
577         }
578         memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
579         *size = new_size;
580         return tmp;
581     }
582     return array;
583 }
584
585 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
586 {
587     if(codec && codec->sample_fmts){
588         const enum SampleFormat *p= codec->sample_fmts;
589         for(; *p!=-1; p++){
590             if(*p == st->codec->sample_fmt)
591                 break;
592         }
593         if(*p == -1)
594             st->codec->sample_fmt = codec->sample_fmts[0];
595     }
596 }
597
598 static void choose_sample_rate(AVStream *st, AVCodec *codec)
599 {
600     if(codec && codec->supported_samplerates){
601         const int *p= codec->supported_samplerates;
602         int best=0;
603         int best_dist=INT_MAX;
604         for(; *p; p++){
605             int dist= abs(st->codec->sample_rate - *p);
606             if(dist < best_dist){
607                 best_dist= dist;
608                 best= *p;
609             }
610         }
611         if(best_dist){
612             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
613         }
614         st->codec->sample_rate= best;
615     }
616 }
617
618 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
619 {
620     if(codec && codec->pix_fmts){
621         const enum PixelFormat *p= codec->pix_fmts;
622         for(; *p!=-1; p++){
623             if(*p == st->codec->pix_fmt)
624                 break;
625         }
626         if(*p == -1
627            && !(   st->codec->codec_id==CODEC_ID_MJPEG
628                 && st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL
629                 && (   st->codec->pix_fmt == PIX_FMT_YUV420P
630                     || st->codec->pix_fmt == PIX_FMT_YUV422P)))
631             st->codec->pix_fmt = codec->pix_fmts[0];
632     }
633 }
634
635 static int read_ffserver_streams(AVFormatContext *s, const char *filename)
636 {
637     int i, err;
638     AVFormatContext *ic;
639     int nopts = 0;
640
641     err = av_open_input_file(&ic, filename, NULL, FFM_PACKET_SIZE, NULL);
642     if (err < 0)
643         return err;
644     /* copy stream format */
645     s->nb_streams = ic->nb_streams;
646     for(i=0;i<ic->nb_streams;i++) {
647         AVStream *st;
648         AVCodec *codec;
649
650         // FIXME: a more elegant solution is needed
651         st = av_mallocz(sizeof(AVStream));
652         memcpy(st, ic->streams[i], sizeof(AVStream));
653         st->codec = avcodec_alloc_context();
654         if (!st->codec) {
655             print_error(filename, AVERROR(ENOMEM));
656             ffmpeg_exit(1);
657         }
658         avcodec_copy_context(st->codec, ic->streams[i]->codec);
659         s->streams[i] = st;
660
661         codec = avcodec_find_encoder(st->codec->codec_id);
662         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
663             if (audio_stream_copy) {
664                 st->stream_copy = 1;
665             } else
666                 choose_sample_fmt(st, codec);
667         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
668             if (video_stream_copy) {
669                 st->stream_copy = 1;
670             } else
671                 choose_pixel_fmt(st, codec);
672         }
673
674         if(!st->codec->thread_count)
675             st->codec->thread_count = 1;
676         if(st->codec->thread_count>1)
677             avcodec_thread_init(st->codec, st->codec->thread_count);
678
679         if(st->codec->flags & CODEC_FLAG_BITEXACT)
680             nopts = 1;
681     }
682
683     if (!nopts)
684         s->timestamp = av_gettime();
685
686     av_close_input_file(ic);
687     return 0;
688 }
689
690 static double
691 get_sync_ipts(const AVOutputStream *ost)
692 {
693     const AVInputStream *ist = ost->sync_ist;
694     return (double)(ist->pts - start_time)/AV_TIME_BASE;
695 }
696
697 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
698     int ret;
699
700     while(bsfc){
701         AVPacket new_pkt= *pkt;
702         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
703                                           &new_pkt.data, &new_pkt.size,
704                                           pkt->data, pkt->size,
705                                           pkt->flags & AV_PKT_FLAG_KEY);
706         if(a>0){
707             av_free_packet(pkt);
708             new_pkt.destruct= av_destruct_packet;
709         } else if(a<0){
710             fprintf(stderr, "%s failed for stream %d, codec %s",
711                     bsfc->filter->name, pkt->stream_index,
712                     avctx->codec ? avctx->codec->name : "copy");
713             print_error("", a);
714             if (exit_on_error)
715                 ffmpeg_exit(1);
716         }
717         *pkt= new_pkt;
718
719         bsfc= bsfc->next;
720     }
721
722     ret= av_interleaved_write_frame(s, pkt);
723     if(ret < 0){
724         print_error("av_interleaved_write_frame()", ret);
725         ffmpeg_exit(1);
726     }
727 }
728
729 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
730
731 static void do_audio_out(AVFormatContext *s,
732                          AVOutputStream *ost,
733                          AVInputStream *ist,
734                          unsigned char *buf, int size)
735 {
736     uint8_t *buftmp;
737     int64_t audio_out_size, audio_buf_size;
738     int64_t allocated_for_size= size;
739
740     int size_out, frame_bytes, ret;
741     AVCodecContext *enc= ost->st->codec;
742     AVCodecContext *dec= ist->st->codec;
743     int osize= av_get_bits_per_sample_format(enc->sample_fmt)/8;
744     int isize= av_get_bits_per_sample_format(dec->sample_fmt)/8;
745     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
746
747 need_realloc:
748     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
749     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
750     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
751     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
752     audio_buf_size*= osize*enc->channels;
753
754     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
755     if(coded_bps > 8*osize)
756         audio_out_size= audio_out_size * coded_bps / (8*osize);
757     audio_out_size += FF_MIN_BUFFER_SIZE;
758
759     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
760         fprintf(stderr, "Buffer sizes too large\n");
761         ffmpeg_exit(1);
762     }
763
764     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
765     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
766     if (!audio_buf || !audio_out){
767         fprintf(stderr, "Out of memory in do_audio_out\n");
768         ffmpeg_exit(1);
769     }
770
771     if (enc->channels != dec->channels)
772         ost->audio_resample = 1;
773
774     if (ost->audio_resample && !ost->resample) {
775         if (dec->sample_fmt != SAMPLE_FMT_S16)
776             fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
777         ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
778                                                enc->sample_rate, dec->sample_rate,
779                                                enc->sample_fmt,  dec->sample_fmt,
780                                                16, 10, 0, 0.8);
781         if (!ost->resample) {
782             fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
783                     dec->channels, dec->sample_rate,
784                     enc->channels, enc->sample_rate);
785             ffmpeg_exit(1);
786         }
787     }
788
789 #define MAKE_SFMT_PAIR(a,b) ((a)+SAMPLE_FMT_NB*(b))
790     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
791         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
792         if (ost->reformat_ctx)
793             av_audio_convert_free(ost->reformat_ctx);
794         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
795                                                    dec->sample_fmt, 1, NULL, 0);
796         if (!ost->reformat_ctx) {
797             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
798                 avcodec_get_sample_fmt_name(dec->sample_fmt),
799                 avcodec_get_sample_fmt_name(enc->sample_fmt));
800             ffmpeg_exit(1);
801         }
802         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
803     }
804
805     if(audio_sync_method){
806         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
807                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
808         double idelta= delta*dec->sample_rate / enc->sample_rate;
809         int byte_delta= ((int)idelta)*2*dec->channels;
810
811         //FIXME resample delay
812         if(fabs(delta) > 50){
813             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
814                 if(byte_delta < 0){
815                     byte_delta= FFMAX(byte_delta, -size);
816                     size += byte_delta;
817                     buf  -= byte_delta;
818                     if(verbose > 2)
819                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
820                     if(!size)
821                         return;
822                     ist->is_start=0;
823                 }else{
824                     static uint8_t *input_tmp= NULL;
825                     input_tmp= av_realloc(input_tmp, byte_delta + size);
826
827                     if(byte_delta > allocated_for_size - size){
828                         allocated_for_size= byte_delta + (int64_t)size;
829                         goto need_realloc;
830                     }
831                     ist->is_start=0;
832
833                     memset(input_tmp, 0, byte_delta);
834                     memcpy(input_tmp + byte_delta, buf, size);
835                     buf= input_tmp;
836                     size += byte_delta;
837                     if(verbose > 2)
838                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
839                 }
840             }else if(audio_sync_method>1){
841                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
842                 av_assert0(ost->audio_resample);
843                 if(verbose > 2)
844                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
845 //                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));
846                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
847             }
848         }
849     }else
850         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
851                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
852
853     if (ost->audio_resample) {
854         buftmp = audio_buf;
855         size_out = audio_resample(ost->resample,
856                                   (short *)buftmp, (short *)buf,
857                                   size / (dec->channels * isize));
858         size_out = size_out * enc->channels * osize;
859     } else {
860         buftmp = buf;
861         size_out = size;
862     }
863
864     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
865         const void *ibuf[6]= {buftmp};
866         void *obuf[6]= {audio_buf};
867         int istride[6]= {isize};
868         int ostride[6]= {osize};
869         int len= size_out/istride[0];
870         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
871             printf("av_audio_convert() failed\n");
872             if (exit_on_error)
873                 ffmpeg_exit(1);
874             return;
875         }
876         buftmp = audio_buf;
877         size_out = len*osize;
878     }
879
880     /* now encode as many frames as possible */
881     if (enc->frame_size > 1) {
882         /* output resampled raw samples */
883         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
884             fprintf(stderr, "av_fifo_realloc2() failed\n");
885             ffmpeg_exit(1);
886         }
887         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
888
889         frame_bytes = enc->frame_size * osize * enc->channels;
890
891         while (av_fifo_size(ost->fifo) >= frame_bytes) {
892             AVPacket pkt;
893             av_init_packet(&pkt);
894
895             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
896
897             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
898
899             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
900                                        (short *)audio_buf);
901             if (ret < 0) {
902                 fprintf(stderr, "Audio encoding failed\n");
903                 ffmpeg_exit(1);
904             }
905             audio_size += ret;
906             pkt.stream_index= ost->index;
907             pkt.data= audio_out;
908             pkt.size= ret;
909             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
910                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
911             pkt.flags |= AV_PKT_FLAG_KEY;
912             write_frame(s, &pkt, enc, ost->bitstream_filters);
913
914             ost->sync_opts += enc->frame_size;
915         }
916     } else {
917         AVPacket pkt;
918         av_init_packet(&pkt);
919
920         ost->sync_opts += size_out / (osize * enc->channels);
921
922         /* output a pcm frame */
923         /* determine the size of the coded buffer */
924         size_out /= osize;
925         if (coded_bps)
926             size_out = size_out*coded_bps/8;
927
928         if(size_out > audio_out_size){
929             fprintf(stderr, "Internal error, buffer size too small\n");
930             ffmpeg_exit(1);
931         }
932
933         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
934         ret = avcodec_encode_audio(enc, audio_out, size_out,
935                                    (short *)buftmp);
936         if (ret < 0) {
937             fprintf(stderr, "Audio encoding failed\n");
938             ffmpeg_exit(1);
939         }
940         audio_size += ret;
941         pkt.stream_index= ost->index;
942         pkt.data= audio_out;
943         pkt.size= ret;
944         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
945             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
946         pkt.flags |= AV_PKT_FLAG_KEY;
947         write_frame(s, &pkt, enc, ost->bitstream_filters);
948     }
949 }
950
951 static void pre_process_video_frame(AVInputStream *ist, AVPicture *picture, void **bufp)
952 {
953     AVCodecContext *dec;
954     AVPicture *picture2;
955     AVPicture picture_tmp;
956     uint8_t *buf = 0;
957
958     dec = ist->st->codec;
959
960     /* deinterlace : must be done before any resize */
961     if (do_deinterlace) {
962         int size;
963
964         /* create temporary picture */
965         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
966         buf = av_malloc(size);
967         if (!buf)
968             return;
969
970         picture2 = &picture_tmp;
971         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
972
973         if(avpicture_deinterlace(picture2, picture,
974                                  dec->pix_fmt, dec->width, dec->height) < 0) {
975             /* if error, do not deinterlace */
976             fprintf(stderr, "Deinterlacing failed\n");
977             av_free(buf);
978             buf = NULL;
979             picture2 = picture;
980         }
981     } else {
982         picture2 = picture;
983     }
984
985     if (picture != picture2)
986         *picture = *picture2;
987     *bufp = buf;
988 }
989
990 /* we begin to correct av delay at this threshold */
991 #define AV_DELAY_MAX 0.100
992
993 static void do_subtitle_out(AVFormatContext *s,
994                             AVOutputStream *ost,
995                             AVInputStream *ist,
996                             AVSubtitle *sub,
997                             int64_t pts)
998 {
999     static uint8_t *subtitle_out = NULL;
1000     int subtitle_out_max_size = 1024 * 1024;
1001     int subtitle_out_size, nb, i;
1002     AVCodecContext *enc;
1003     AVPacket pkt;
1004
1005     if (pts == AV_NOPTS_VALUE) {
1006         fprintf(stderr, "Subtitle packets must have a pts\n");
1007         if (exit_on_error)
1008             ffmpeg_exit(1);
1009         return;
1010     }
1011
1012     enc = ost->st->codec;
1013
1014     if (!subtitle_out) {
1015         subtitle_out = av_malloc(subtitle_out_max_size);
1016     }
1017
1018     /* Note: DVB subtitle need one packet to draw them and one other
1019        packet to clear them */
1020     /* XXX: signal it in the codec context ? */
1021     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1022         nb = 2;
1023     else
1024         nb = 1;
1025
1026     for(i = 0; i < nb; i++) {
1027         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1028         // start_display_time is required to be 0
1029         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1030         sub->end_display_time -= sub->start_display_time;
1031         sub->start_display_time = 0;
1032         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1033                                                     subtitle_out_max_size, sub);
1034         if (subtitle_out_size < 0) {
1035             fprintf(stderr, "Subtitle encoding failed\n");
1036             ffmpeg_exit(1);
1037         }
1038
1039         av_init_packet(&pkt);
1040         pkt.stream_index = ost->index;
1041         pkt.data = subtitle_out;
1042         pkt.size = subtitle_out_size;
1043         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1044         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1045             /* XXX: the pts correction is handled here. Maybe handling
1046                it in the codec would be better */
1047             if (i == 0)
1048                 pkt.pts += 90 * sub->start_display_time;
1049             else
1050                 pkt.pts += 90 * sub->end_display_time;
1051         }
1052         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1053     }
1054 }
1055
1056 static int bit_buffer_size= 1024*256;
1057 static uint8_t *bit_buffer= NULL;
1058
1059 static void do_video_out(AVFormatContext *s,
1060                          AVOutputStream *ost,
1061                          AVInputStream *ist,
1062                          AVFrame *in_picture,
1063                          int *frame_size)
1064 {
1065     int nb_frames, i, ret;
1066     AVFrame *final_picture, *formatted_picture, *resampling_dst, *padding_src;
1067     AVFrame picture_crop_temp, picture_pad_temp;
1068     AVCodecContext *enc, *dec;
1069     double sync_ipts;
1070
1071     avcodec_get_frame_defaults(&picture_crop_temp);
1072     avcodec_get_frame_defaults(&picture_pad_temp);
1073
1074     enc = ost->st->codec;
1075     dec = ist->st->codec;
1076
1077     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1078
1079     /* by default, we output a single frame */
1080     nb_frames = 1;
1081
1082     *frame_size = 0;
1083
1084     if(video_sync_method){
1085         double vdelta = sync_ipts - ost->sync_opts;
1086         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1087         if (vdelta < -1.1)
1088             nb_frames = 0;
1089         else if (video_sync_method == 2 || (video_sync_method<0 && (s->oformat->flags & AVFMT_VARIABLE_FPS))){
1090             if(vdelta<=-0.6){
1091                 nb_frames=0;
1092             }else if(vdelta>0.6)
1093             ost->sync_opts= lrintf(sync_ipts);
1094         }else if (vdelta > 1.1)
1095             nb_frames = lrintf(vdelta);
1096 //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);
1097         if (nb_frames == 0){
1098             ++nb_frames_drop;
1099             if (verbose>2)
1100                 fprintf(stderr, "*** drop!\n");
1101         }else if (nb_frames > 1) {
1102             nb_frames_dup += nb_frames - 1;
1103             if (verbose>2)
1104                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1105         }
1106     }else
1107         ost->sync_opts= lrintf(sync_ipts);
1108
1109     nb_frames= FFMIN(nb_frames, max_frames[AVMEDIA_TYPE_VIDEO] - ost->frame_number);
1110     if (nb_frames <= 0)
1111         return;
1112
1113     formatted_picture = in_picture;
1114     final_picture = formatted_picture;
1115     padding_src = formatted_picture;
1116     resampling_dst = &ost->pict_tmp;
1117
1118     if (   ost->resample_height != ist->st->codec->height
1119         || ost->resample_width  != ist->st->codec->width
1120         || (ost->resample_pix_fmt!= ist->st->codec->pix_fmt) ) {
1121
1122         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));
1123         if(!ost->video_resample)
1124             ffmpeg_exit(1);
1125     }
1126
1127 #if !CONFIG_AVFILTER
1128     if (ost->video_resample) {
1129         padding_src = NULL;
1130         final_picture = &ost->pict_tmp;
1131         if(  ost->resample_height != ist->st->codec->height
1132           || ost->resample_width  != ist->st->codec->width
1133           || (ost->resample_pix_fmt!= ist->st->codec->pix_fmt) ) {
1134
1135             /* initialize a new scaler context */
1136             sws_freeContext(ost->img_resample_ctx);
1137             sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
1138             ost->img_resample_ctx = sws_getContext(
1139                 ist->st->codec->width,
1140                 ist->st->codec->height,
1141                 ist->st->codec->pix_fmt,
1142                 ost->st->codec->width,
1143                 ost->st->codec->height,
1144                 ost->st->codec->pix_fmt,
1145                 sws_flags, NULL, NULL, NULL);
1146             if (ost->img_resample_ctx == NULL) {
1147                 fprintf(stderr, "Cannot get resampling context\n");
1148                 ffmpeg_exit(1);
1149             }
1150         }
1151         sws_scale(ost->img_resample_ctx, formatted_picture->data, formatted_picture->linesize,
1152               0, ost->resample_height, resampling_dst->data, resampling_dst->linesize);
1153     }
1154 #endif
1155
1156     /* duplicates frame if needed */
1157     for(i=0;i<nb_frames;i++) {
1158         AVPacket pkt;
1159         av_init_packet(&pkt);
1160         pkt.stream_index= ost->index;
1161
1162         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1163             /* raw pictures are written as AVPicture structure to
1164                avoid any copies. We support temorarily the older
1165                method. */
1166             AVFrame* old_frame = enc->coded_frame;
1167             enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
1168             pkt.data= (uint8_t *)final_picture;
1169             pkt.size=  sizeof(AVPicture);
1170             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1171             pkt.flags |= AV_PKT_FLAG_KEY;
1172
1173             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1174             enc->coded_frame = old_frame;
1175         } else {
1176             AVFrame big_picture;
1177
1178             big_picture= *final_picture;
1179             /* better than nothing: use input picture interlaced
1180                settings */
1181             big_picture.interlaced_frame = in_picture->interlaced_frame;
1182             if(avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)){
1183                 if(top_field_first == -1)
1184                     big_picture.top_field_first = in_picture->top_field_first;
1185                 else
1186                     big_picture.top_field_first = top_field_first;
1187             }
1188
1189             /* handles sameq here. This is not correct because it may
1190                not be a global option */
1191             big_picture.quality = same_quality ? ist->st->quality : ost->st->quality;
1192             if(!me_threshold)
1193                 big_picture.pict_type = 0;
1194 //            big_picture.pts = AV_NOPTS_VALUE;
1195             big_picture.pts= ost->sync_opts;
1196 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1197 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1198             if (ost->forced_kf_index < ost->forced_kf_count &&
1199                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1200                 big_picture.pict_type = FF_I_TYPE;
1201                 ost->forced_kf_index++;
1202             }
1203             ret = avcodec_encode_video(enc,
1204                                        bit_buffer, bit_buffer_size,
1205                                        &big_picture);
1206             if (ret < 0) {
1207                 fprintf(stderr, "Video encoding failed\n");
1208                 ffmpeg_exit(1);
1209             }
1210
1211             if(ret>0){
1212                 pkt.data= bit_buffer;
1213                 pkt.size= ret;
1214                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1215                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1216 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1217    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1218    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1219
1220                 if(enc->coded_frame->key_frame)
1221                     pkt.flags |= AV_PKT_FLAG_KEY;
1222                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1223                 *frame_size = ret;
1224                 video_size += ret;
1225                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1226                 //        enc->frame_number-1, ret, enc->pict_type);
1227                 /* if two pass, output log */
1228                 if (ost->logfile && enc->stats_out) {
1229                     fprintf(ost->logfile, "%s", enc->stats_out);
1230                 }
1231             }
1232         }
1233         ost->sync_opts++;
1234         ost->frame_number++;
1235     }
1236 }
1237
1238 static double psnr(double d){
1239     return -10.0*log(d)/log(10.0);
1240 }
1241
1242 static void do_video_stats(AVFormatContext *os, AVOutputStream *ost,
1243                            int frame_size)
1244 {
1245     AVCodecContext *enc;
1246     int frame_number;
1247     double ti1, bitrate, avg_bitrate;
1248
1249     /* this is executed just the first time do_video_stats is called */
1250     if (!vstats_file) {
1251         vstats_file = fopen(vstats_filename, "w");
1252         if (!vstats_file) {
1253             perror("fopen");
1254             ffmpeg_exit(1);
1255         }
1256     }
1257
1258     enc = ost->st->codec;
1259     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1260         frame_number = ost->frame_number;
1261         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1262         if (enc->flags&CODEC_FLAG_PSNR)
1263             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1264
1265         fprintf(vstats_file,"f_size= %6d ", frame_size);
1266         /* compute pts value */
1267         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1268         if (ti1 < 0.01)
1269             ti1 = 0.01;
1270
1271         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1272         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1273         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1274             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1275         fprintf(vstats_file,"type= %c\n", av_get_pict_type_char(enc->coded_frame->pict_type));
1276     }
1277 }
1278
1279 static void print_report(AVFormatContext **output_files,
1280                          AVOutputStream **ost_table, int nb_ostreams,
1281                          int is_last_report)
1282 {
1283     char buf[1024];
1284     AVOutputStream *ost;
1285     AVFormatContext *oc;
1286     int64_t total_size;
1287     AVCodecContext *enc;
1288     int frame_number, vid, i;
1289     double bitrate, ti1, pts;
1290     static int64_t last_time = -1;
1291     static int qp_histogram[52];
1292
1293     if (!is_last_report) {
1294         int64_t cur_time;
1295         /* display the report every 0.5 seconds */
1296         cur_time = av_gettime();
1297         if (last_time == -1) {
1298             last_time = cur_time;
1299             return;
1300         }
1301         if ((cur_time - last_time) < 500000)
1302             return;
1303         last_time = cur_time;
1304     }
1305
1306
1307     oc = output_files[0];
1308
1309     total_size = url_fsize(oc->pb);
1310     if(total_size<0) // FIXME improve url_fsize() so it works with non seekable output too
1311         total_size= url_ftell(oc->pb);
1312
1313     buf[0] = '\0';
1314     ti1 = 1e10;
1315     vid = 0;
1316     for(i=0;i<nb_ostreams;i++) {
1317         ost = ost_table[i];
1318         enc = ost->st->codec;
1319         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1320             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ",
1321                      !ost->st->stream_copy ?
1322                      enc->coded_frame->quality/(float)FF_QP2LAMBDA : -1);
1323         }
1324         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1325             float t = (av_gettime()-timer_start) / 1000000.0;
1326
1327             frame_number = ost->frame_number;
1328             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1329                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0,
1330                      !ost->st->stream_copy ?
1331                      enc->coded_frame->quality/(float)FF_QP2LAMBDA : -1);
1332             if(is_last_report)
1333                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1334             if(qp_hist){
1335                 int j;
1336                 int qp= lrintf(enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1337                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1338                     qp_histogram[qp]++;
1339                 for(j=0; j<32; j++)
1340                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1341             }
1342             if (enc->flags&CODEC_FLAG_PSNR){
1343                 int j;
1344                 double error, error_sum=0;
1345                 double scale, scale_sum=0;
1346                 char type[3]= {'Y','U','V'};
1347                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1348                 for(j=0; j<3; j++){
1349                     if(is_last_report){
1350                         error= enc->error[j];
1351                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1352                     }else{
1353                         error= enc->coded_frame->error[j];
1354                         scale= enc->width*enc->height*255.0*255.0;
1355                     }
1356                     if(j) scale/=4;
1357                     error_sum += error;
1358                     scale_sum += scale;
1359                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1360                 }
1361                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1362             }
1363             vid = 1;
1364         }
1365         /* compute min output value */
1366         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1367         if ((pts < ti1) && (pts > 0))
1368             ti1 = pts;
1369     }
1370     if (ti1 < 0.01)
1371         ti1 = 0.01;
1372
1373     if (verbose || is_last_report) {
1374         bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1375
1376         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1377             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1378             (double)total_size / 1024, ti1, bitrate);
1379
1380         if (nb_frames_dup || nb_frames_drop)
1381           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1382                   nb_frames_dup, nb_frames_drop);
1383
1384         if (verbose >= 0)
1385             fprintf(stderr, "%s    \r", buf);
1386
1387         fflush(stderr);
1388     }
1389
1390     if (is_last_report && verbose >= 0){
1391         int64_t raw= audio_size + video_size + extra_size;
1392         fprintf(stderr, "\n");
1393         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1394                 video_size/1024.0,
1395                 audio_size/1024.0,
1396                 extra_size/1024.0,
1397                 100.0*(total_size - raw)/raw
1398         );
1399     }
1400 }
1401
1402 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1403 static int output_packet(AVInputStream *ist, int ist_index,
1404                          AVOutputStream **ost_table, int nb_ostreams,
1405                          const AVPacket *pkt)
1406 {
1407     AVFormatContext *os;
1408     AVOutputStream *ost;
1409     int ret, i;
1410     int got_picture;
1411     AVFrame picture;
1412     void *buffer_to_free;
1413     static unsigned int samples_size= 0;
1414     AVSubtitle subtitle, *subtitle_to_free;
1415     int64_t pkt_pts = AV_NOPTS_VALUE;
1416 #if CONFIG_AVFILTER
1417     int frame_available;
1418 #endif
1419
1420     AVPacket avpkt;
1421     int bps = av_get_bits_per_sample_format(ist->st->codec->sample_fmt)>>3;
1422
1423     if(ist->next_pts == AV_NOPTS_VALUE)
1424         ist->next_pts= ist->pts;
1425
1426     if (pkt == NULL) {
1427         /* EOF handling */
1428         av_init_packet(&avpkt);
1429         avpkt.data = NULL;
1430         avpkt.size = 0;
1431         goto handle_eof;
1432     } else {
1433         avpkt = *pkt;
1434     }
1435
1436     if(pkt->dts != AV_NOPTS_VALUE)
1437         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1438     if(pkt->pts != AV_NOPTS_VALUE)
1439         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1440
1441     //while we have more to decode or while the decoder did output something on EOF
1442     while (avpkt.size > 0 || (!pkt && ist->next_pts != ist->pts)) {
1443         uint8_t *data_buf, *decoded_data_buf;
1444         int data_size, decoded_data_size;
1445     handle_eof:
1446         ist->pts= ist->next_pts;
1447
1448         if(avpkt.size && avpkt.size != pkt->size &&
1449            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1450             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1451             ist->showed_multi_packet_warning=1;
1452         }
1453
1454         /* decode the packet if needed */
1455         decoded_data_buf = NULL; /* fail safe */
1456         decoded_data_size= 0;
1457         data_buf  = avpkt.data;
1458         data_size = avpkt.size;
1459         subtitle_to_free = NULL;
1460         if (ist->decoding_needed) {
1461             switch(ist->st->codec->codec_type) {
1462             case AVMEDIA_TYPE_AUDIO:{
1463                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1464                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1465                     av_free(samples);
1466                     samples= av_malloc(samples_size);
1467                 }
1468                 decoded_data_size= samples_size;
1469                     /* XXX: could avoid copy if PCM 16 bits with same
1470                        endianness as CPU */
1471                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1472                                             &avpkt);
1473                 if (ret < 0)
1474                     goto fail_decode;
1475                 avpkt.data += ret;
1476                 avpkt.size -= ret;
1477                 data_size   = ret;
1478                 /* Some bug in mpeg audio decoder gives */
1479                 /* decoded_data_size < 0, it seems they are overflows */
1480                 if (decoded_data_size <= 0) {
1481                     /* no audio frame */
1482                     continue;
1483                 }
1484                 decoded_data_buf = (uint8_t *)samples;
1485                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1486                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1487                 break;}
1488             case AVMEDIA_TYPE_VIDEO:
1489                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1490                     /* XXX: allocate picture correctly */
1491                     avcodec_get_frame_defaults(&picture);
1492                     ist->st->codec->reordered_opaque = pkt_pts;
1493                     pkt_pts = AV_NOPTS_VALUE;
1494
1495                     ret = avcodec_decode_video2(ist->st->codec,
1496                                                 &picture, &got_picture, &avpkt);
1497                     ist->st->quality= picture.quality;
1498                     if (ret < 0)
1499                         goto fail_decode;
1500                     if (!got_picture) {
1501                         /* no picture yet */
1502                         goto discard_packet;
1503                     }
1504                     ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, picture.reordered_opaque, ist->pts);
1505                     if (ist->st->codec->time_base.num != 0) {
1506                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1507                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1508                                           ist->st->codec->time_base.num * ticks) /
1509                             ist->st->codec->time_base.den;
1510                     }
1511                     avpkt.size = 0;
1512                     break;
1513             case AVMEDIA_TYPE_SUBTITLE:
1514                 ret = avcodec_decode_subtitle2(ist->st->codec,
1515                                                &subtitle, &got_picture, &avpkt);
1516                 if (ret < 0)
1517                     goto fail_decode;
1518                 if (!got_picture) {
1519                     goto discard_packet;
1520                 }
1521                 subtitle_to_free = &subtitle;
1522                 avpkt.size = 0;
1523                 break;
1524             default:
1525                 goto fail_decode;
1526             }
1527         } else {
1528             switch(ist->st->codec->codec_type) {
1529             case AVMEDIA_TYPE_AUDIO:
1530                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1531                     ist->st->codec->sample_rate;
1532                 break;
1533             case AVMEDIA_TYPE_VIDEO:
1534                 if (ist->st->codec->time_base.num != 0) {
1535                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1536                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1537                                       ist->st->codec->time_base.num * ticks) /
1538                         ist->st->codec->time_base.den;
1539                 }
1540                 break;
1541             }
1542             ret = avpkt.size;
1543             avpkt.size = 0;
1544         }
1545
1546         buffer_to_free = NULL;
1547         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1548             pre_process_video_frame(ist, (AVPicture *)&picture,
1549                                     &buffer_to_free);
1550         }
1551
1552 #if CONFIG_AVFILTER
1553         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ist->input_video_filter) {
1554             // add it to be filtered
1555             av_vsrc_buffer_add_frame(ist->input_video_filter, &picture,
1556                                      ist->pts,
1557                                      ist->st->codec->sample_aspect_ratio);
1558         }
1559 #endif
1560
1561         // preprocess audio (volume)
1562         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1563             if (audio_volume != 256) {
1564                 short *volp;
1565                 volp = samples;
1566                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1567                     int v = ((*volp) * audio_volume + 128) >> 8;
1568                     if (v < -32768) v = -32768;
1569                     if (v >  32767) v = 32767;
1570                     *volp++ = v;
1571                 }
1572             }
1573         }
1574
1575         /* frame rate emulation */
1576         if (rate_emu) {
1577             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1578             int64_t now = av_gettime() - ist->start;
1579             if (pts > now)
1580                 usleep(pts - now);
1581         }
1582 #if CONFIG_AVFILTER
1583         frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1584             !ist->output_video_filter || avfilter_poll_frame(ist->output_video_filter->inputs[0]);
1585 #endif
1586         /* if output time reached then transcode raw format,
1587            encode packets and output them */
1588         if (start_time == 0 || ist->pts >= start_time)
1589 #if CONFIG_AVFILTER
1590         while (frame_available) {
1591             AVRational ist_pts_tb;
1592             if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ist->output_video_filter)
1593                 get_filtered_video_frame(ist->output_video_filter, &picture, &ist->picref, &ist_pts_tb);
1594             if (ist->picref)
1595                 ist->pts = ist->picref->pts;
1596 #endif
1597             for(i=0;i<nb_ostreams;i++) {
1598                 int frame_size;
1599
1600                 ost = ost_table[i];
1601                 if (ost->source_index == ist_index) {
1602                     os = output_files[ost->file_index];
1603
1604                     /* set the input output pts pairs */
1605                     //ost->sync_ipts = (double)(ist->pts + input_files_ts_offset[ist->file_index] - start_time)/ AV_TIME_BASE;
1606
1607                     if (ost->encoding_needed) {
1608                         av_assert0(ist->decoding_needed);
1609                         switch(ost->st->codec->codec_type) {
1610                         case AVMEDIA_TYPE_AUDIO:
1611                             do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1612                             break;
1613                         case AVMEDIA_TYPE_VIDEO:
1614 #if CONFIG_AVFILTER
1615                             if (ist->picref->video)
1616                                 ost->st->codec->sample_aspect_ratio = ist->picref->video->pixel_aspect;
1617 #endif
1618                             do_video_out(os, ost, ist, &picture, &frame_size);
1619                             if (vstats_filename && frame_size)
1620                                 do_video_stats(os, ost, frame_size);
1621                             break;
1622                         case AVMEDIA_TYPE_SUBTITLE:
1623                             do_subtitle_out(os, ost, ist, &subtitle,
1624                                             pkt->pts);
1625                             break;
1626                         default:
1627                             abort();
1628                         }
1629                     } else {
1630                         AVFrame avframe; //FIXME/XXX remove this
1631                         AVPacket opkt;
1632                         int64_t ost_tb_start_time= av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1633
1634                         av_init_packet(&opkt);
1635
1636                         if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1637                             continue;
1638
1639                         /* no reencoding needed : output the packet directly */
1640                         /* force the input stream PTS */
1641
1642                         avcodec_get_frame_defaults(&avframe);
1643                         ost->st->codec->coded_frame= &avframe;
1644                         avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1645
1646                         if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1647                             audio_size += data_size;
1648                         else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1649                             video_size += data_size;
1650                             ost->sync_opts++;
1651                         }
1652
1653                         opkt.stream_index= ost->index;
1654                         if(pkt->pts != AV_NOPTS_VALUE)
1655                             opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1656                         else
1657                             opkt.pts= AV_NOPTS_VALUE;
1658
1659                         if (pkt->dts == AV_NOPTS_VALUE)
1660                             opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1661                         else
1662                             opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1663                         opkt.dts -= ost_tb_start_time;
1664
1665                         opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1666                         opkt.flags= pkt->flags;
1667
1668                         //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1669                         if(   ost->st->codec->codec_id != CODEC_ID_H264
1670                            && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1671                            && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1672                            ) {
1673                             if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1674                                 opkt.destruct= av_destruct_packet;
1675                         } else {
1676                             opkt.data = data_buf;
1677                             opkt.size = data_size;
1678                         }
1679
1680                         write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1681                         ost->st->codec->frame_number++;
1682                         ost->frame_number++;
1683                         av_free_packet(&opkt);
1684                     }
1685                 }
1686             }
1687
1688 #if CONFIG_AVFILTER
1689             frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1690                               ist->output_video_filter && avfilter_poll_frame(ist->output_video_filter->inputs[0]);
1691             if(ist->picref)
1692                 avfilter_unref_buffer(ist->picref);
1693         }
1694 #endif
1695         av_free(buffer_to_free);
1696         /* XXX: allocate the subtitles in the codec ? */
1697         if (subtitle_to_free) {
1698             if (subtitle_to_free->rects != NULL) {
1699                 for (i = 0; i < subtitle_to_free->num_rects; i++) {
1700                     av_freep(&subtitle_to_free->rects[i]->pict.data[0]);
1701                     av_freep(&subtitle_to_free->rects[i]->pict.data[1]);
1702                     av_freep(&subtitle_to_free->rects[i]);
1703                 }
1704                 av_freep(&subtitle_to_free->rects);
1705             }
1706             subtitle_to_free->num_rects = 0;
1707             subtitle_to_free = NULL;
1708         }
1709     }
1710  discard_packet:
1711     if (pkt == NULL) {
1712         /* EOF handling */
1713
1714         for(i=0;i<nb_ostreams;i++) {
1715             ost = ost_table[i];
1716             if (ost->source_index == ist_index) {
1717                 AVCodecContext *enc= ost->st->codec;
1718                 os = output_files[ost->file_index];
1719
1720                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1721                     continue;
1722                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1723                     continue;
1724
1725                 if (ost->encoding_needed) {
1726                     for(;;) {
1727                         AVPacket pkt;
1728                         int fifo_bytes;
1729                         av_init_packet(&pkt);
1730                         pkt.stream_index= ost->index;
1731
1732                         switch(ost->st->codec->codec_type) {
1733                         case AVMEDIA_TYPE_AUDIO:
1734                             fifo_bytes = av_fifo_size(ost->fifo);
1735                             ret = 0;
1736                             /* encode any samples remaining in fifo */
1737                             if (fifo_bytes > 0) {
1738                                 int osize = av_get_bits_per_sample_format(enc->sample_fmt) >> 3;
1739                                 int fs_tmp = enc->frame_size;
1740
1741                                 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1742                                 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1743                                     enc->frame_size = fifo_bytes / (osize * enc->channels);
1744                                 } else { /* pad */
1745                                     int frame_bytes = enc->frame_size*osize*enc->channels;
1746                                     if (allocated_audio_buf_size < frame_bytes)
1747                                         ffmpeg_exit(1);
1748                                     memset(audio_buf+fifo_bytes, 0, frame_bytes - fifo_bytes);
1749                                 }
1750
1751                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1752                                 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1753                                                           ost->st->time_base.num, enc->sample_rate);
1754                                 enc->frame_size = fs_tmp;
1755                             }
1756                             if(ret <= 0) {
1757                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1758                             }
1759                             if (ret < 0) {
1760                                 fprintf(stderr, "Audio encoding failed\n");
1761                                 ffmpeg_exit(1);
1762                             }
1763                             audio_size += ret;
1764                             pkt.flags |= AV_PKT_FLAG_KEY;
1765                             break;
1766                         case AVMEDIA_TYPE_VIDEO:
1767                             ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1768                             if (ret < 0) {
1769                                 fprintf(stderr, "Video encoding failed\n");
1770                                 ffmpeg_exit(1);
1771                             }
1772                             video_size += ret;
1773                             if(enc->coded_frame && enc->coded_frame->key_frame)
1774                                 pkt.flags |= AV_PKT_FLAG_KEY;
1775                             if (ost->logfile && enc->stats_out) {
1776                                 fprintf(ost->logfile, "%s", enc->stats_out);
1777                             }
1778                             break;
1779                         default:
1780                             ret=-1;
1781                         }
1782
1783                         if(ret<=0)
1784                             break;
1785                         pkt.data= bit_buffer;
1786                         pkt.size= ret;
1787                         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1788                             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1789                         write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1790                     }
1791                 }
1792             }
1793         }
1794     }
1795
1796     return 0;
1797  fail_decode:
1798     return -1;
1799 }
1800
1801 static void print_sdp(AVFormatContext **avc, int n)
1802 {
1803     char sdp[2048];
1804
1805     avf_sdp_create(avc, n, sdp, sizeof(sdp));
1806     printf("SDP:\n%s\n", sdp);
1807     fflush(stdout);
1808 }
1809
1810 static int copy_chapters(int infile, int outfile)
1811 {
1812     AVFormatContext *is = input_files[infile];
1813     AVFormatContext *os = output_files[outfile];
1814     int i;
1815
1816     for (i = 0; i < is->nb_chapters; i++) {
1817         AVChapter *in_ch = is->chapters[i], *out_ch;
1818         AVMetadataTag *t = NULL;
1819         int64_t ts_off   = av_rescale_q(start_time - input_files_ts_offset[infile],
1820                                       AV_TIME_BASE_Q, in_ch->time_base);
1821         int64_t rt       = (recording_time == INT64_MAX) ? INT64_MAX :
1822                            av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
1823
1824
1825         if (in_ch->end < ts_off)
1826             continue;
1827         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
1828             break;
1829
1830         out_ch = av_mallocz(sizeof(AVChapter));
1831         if (!out_ch)
1832             return AVERROR(ENOMEM);
1833
1834         out_ch->id        = in_ch->id;
1835         out_ch->time_base = in_ch->time_base;
1836         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
1837         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
1838
1839         while ((t = av_metadata_get(in_ch->metadata, "", t, AV_METADATA_IGNORE_SUFFIX)))
1840             av_metadata_set2(&out_ch->metadata, t->key, t->value, 0);
1841
1842         os->nb_chapters++;
1843         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
1844         if (!os->chapters)
1845             return AVERROR(ENOMEM);
1846         os->chapters[os->nb_chapters - 1] = out_ch;
1847     }
1848     return 0;
1849 }
1850
1851 static void parse_forced_key_frames(char *kf, AVOutputStream *ost,
1852                                     AVCodecContext *avctx)
1853 {
1854     char *p;
1855     int n = 1, i;
1856     int64_t t;
1857
1858     for (p = kf; *p; p++)
1859         if (*p == ',')
1860             n++;
1861     ost->forced_kf_count = n;
1862     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1863     if (!ost->forced_kf_pts) {
1864         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1865         ffmpeg_exit(1);
1866     }
1867     for (i = 0; i < n; i++) {
1868         p = i ? strchr(p, ',') + 1 : kf;
1869         t = parse_time_or_die("force_key_frames", p, 1);
1870         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1871     }
1872 }
1873
1874 /*
1875  * The following code is the main loop of the file converter
1876  */
1877 static int transcode(AVFormatContext **output_files,
1878                      int nb_output_files,
1879                      AVFormatContext **input_files,
1880                      int nb_input_files,
1881                      AVStreamMap *stream_maps, int nb_stream_maps)
1882 {
1883     int ret = 0, i, j, k, n, nb_istreams = 0, nb_ostreams = 0;
1884     AVFormatContext *is, *os;
1885     AVCodecContext *codec, *icodec;
1886     AVOutputStream *ost, **ost_table = NULL;
1887     AVInputStream *ist, **ist_table = NULL;
1888     AVInputFile *file_table;
1889     char error[1024];
1890     int key;
1891     int want_sdp = 1;
1892     uint8_t no_packet[MAX_FILES]={0};
1893     int no_packet_count=0;
1894
1895     file_table= av_mallocz(nb_input_files * sizeof(AVInputFile));
1896     if (!file_table)
1897         goto fail;
1898
1899     /* input stream init */
1900     j = 0;
1901     for(i=0;i<nb_input_files;i++) {
1902         is = input_files[i];
1903         file_table[i].ist_index = j;
1904         file_table[i].nb_streams = is->nb_streams;
1905         j += is->nb_streams;
1906     }
1907     nb_istreams = j;
1908
1909     ist_table = av_mallocz(nb_istreams * sizeof(AVInputStream *));
1910     if (!ist_table)
1911         goto fail;
1912
1913     for(i=0;i<nb_istreams;i++) {
1914         ist = av_mallocz(sizeof(AVInputStream));
1915         if (!ist)
1916             goto fail;
1917         ist_table[i] = ist;
1918     }
1919     j = 0;
1920     for(i=0;i<nb_input_files;i++) {
1921         is = input_files[i];
1922         for(k=0;k<is->nb_streams;k++) {
1923             ist = ist_table[j++];
1924             ist->st = is->streams[k];
1925             ist->file_index = i;
1926             ist->index = k;
1927             ist->discard = 1; /* the stream is discarded by default
1928                                  (changed later) */
1929
1930             if (rate_emu) {
1931                 ist->start = av_gettime();
1932             }
1933         }
1934     }
1935
1936     /* output stream init */
1937     nb_ostreams = 0;
1938     for(i=0;i<nb_output_files;i++) {
1939         os = output_files[i];
1940         if (!os->nb_streams) {
1941             dump_format(output_files[i], i, output_files[i]->filename, 1);
1942             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
1943             ret = AVERROR(EINVAL);
1944             goto fail;
1945         }
1946         nb_ostreams += os->nb_streams;
1947     }
1948     if (nb_stream_maps > 0 && nb_stream_maps != nb_ostreams) {
1949         fprintf(stderr, "Number of stream maps must match number of output streams\n");
1950         ret = AVERROR(EINVAL);
1951         goto fail;
1952     }
1953
1954     /* Sanity check the mapping args -- do the input files & streams exist? */
1955     for(i=0;i<nb_stream_maps;i++) {
1956         int fi = stream_maps[i].file_index;
1957         int si = stream_maps[i].stream_index;
1958
1959         if (fi < 0 || fi > nb_input_files - 1 ||
1960             si < 0 || si > file_table[fi].nb_streams - 1) {
1961             fprintf(stderr,"Could not find input stream #%d.%d\n", fi, si);
1962             ret = AVERROR(EINVAL);
1963             goto fail;
1964         }
1965         fi = stream_maps[i].sync_file_index;
1966         si = stream_maps[i].sync_stream_index;
1967         if (fi < 0 || fi > nb_input_files - 1 ||
1968             si < 0 || si > file_table[fi].nb_streams - 1) {
1969             fprintf(stderr,"Could not find sync stream #%d.%d\n", fi, si);
1970             ret = AVERROR(EINVAL);
1971             goto fail;
1972         }
1973     }
1974
1975     ost_table = av_mallocz(sizeof(AVOutputStream *) * nb_ostreams);
1976     if (!ost_table)
1977         goto fail;
1978     n = 0;
1979     for(k=0;k<nb_output_files;k++) {
1980         os = output_files[k];
1981         for(i=0;i<os->nb_streams;i++,n++) {
1982             int found;
1983             ost = ost_table[n] = output_streams_for_file[k][i];
1984             ost->st = os->streams[i];
1985             if (nb_stream_maps > 0) {
1986                 ost->source_index = file_table[stream_maps[n].file_index].ist_index +
1987                     stream_maps[n].stream_index;
1988
1989                 /* Sanity check that the stream types match */
1990                 if (ist_table[ost->source_index]->st->codec->codec_type != ost->st->codec->codec_type) {
1991                     int i= ost->file_index;
1992                     dump_format(output_files[i], i, output_files[i]->filename, 1);
1993                     fprintf(stderr, "Codec type mismatch for mapping #%d.%d -> #%d.%d\n",
1994                         stream_maps[n].file_index, stream_maps[n].stream_index,
1995                         ost->file_index, ost->index);
1996                     ffmpeg_exit(1);
1997                 }
1998
1999             } else {
2000                 int best_nb_frames=-1;
2001                 /* get corresponding input stream index : we select the first one with the right type */
2002                 found = 0;
2003                 for(j=0;j<nb_istreams;j++) {
2004                     int skip=0;
2005                     ist = ist_table[j];
2006                     if(opt_programid){
2007                         int pi,si;
2008                         AVFormatContext *f= input_files[ ist->file_index ];
2009                         skip=1;
2010                         for(pi=0; pi<f->nb_programs; pi++){
2011                             AVProgram *p= f->programs[pi];
2012                             if(p->id == opt_programid)
2013                                 for(si=0; si<p->nb_stream_indexes; si++){
2014                                     if(f->streams[ p->stream_index[si] ] == ist->st)
2015                                         skip=0;
2016                                 }
2017                         }
2018                     }
2019                     if (ist->discard && ist->st->discard != AVDISCARD_ALL && !skip &&
2020                         ist->st->codec->codec_type == ost->st->codec->codec_type) {
2021                         if(best_nb_frames < ist->st->codec_info_nb_frames){
2022                             best_nb_frames= ist->st->codec_info_nb_frames;
2023                             ost->source_index = j;
2024                             found = 1;
2025                         }
2026                     }
2027                 }
2028
2029                 if (!found) {
2030                     if(! opt_programid) {
2031                         /* try again and reuse existing stream */
2032                         for(j=0;j<nb_istreams;j++) {
2033                             ist = ist_table[j];
2034                             if (   ist->st->codec->codec_type == ost->st->codec->codec_type
2035                                 && ist->st->discard != AVDISCARD_ALL) {
2036                                 ost->source_index = j;
2037                                 found = 1;
2038                             }
2039                         }
2040                     }
2041                     if (!found) {
2042                         int i= ost->file_index;
2043                         dump_format(output_files[i], i, output_files[i]->filename, 1);
2044                         fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",
2045                                 ost->file_index, ost->index);
2046                         ffmpeg_exit(1);
2047                     }
2048                 }
2049             }
2050             ist = ist_table[ost->source_index];
2051             ist->discard = 0;
2052             ost->sync_ist = (nb_stream_maps > 0) ?
2053                 ist_table[file_table[stream_maps[n].sync_file_index].ist_index +
2054                          stream_maps[n].sync_stream_index] : ist;
2055         }
2056     }
2057
2058     /* for each output stream, we compute the right encoding parameters */
2059     for(i=0;i<nb_ostreams;i++) {
2060         AVMetadataTag *t = NULL;
2061         ost = ost_table[i];
2062         os = output_files[ost->file_index];
2063         ist = ist_table[ost->source_index];
2064
2065         codec = ost->st->codec;
2066         icodec = ist->st->codec;
2067
2068         while ((t = av_metadata_get(ist->st->metadata, "", t, AV_METADATA_IGNORE_SUFFIX))) {
2069             av_metadata_set2(&ost->st->metadata, t->key, t->value, AV_METADATA_DONT_OVERWRITE);
2070         }
2071
2072         ost->st->disposition = ist->st->disposition;
2073         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2074         codec->chroma_sample_location = icodec->chroma_sample_location;
2075
2076         if (ost->st->stream_copy) {
2077             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2078
2079             if (extra_size > INT_MAX)
2080                 goto fail;
2081
2082             /* if stream_copy is selected, no need to decode or encode */
2083             codec->codec_id = icodec->codec_id;
2084             codec->codec_type = icodec->codec_type;
2085
2086             if(!codec->codec_tag){
2087                 if(   !os->oformat->codec_tag
2088                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2089                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2090                     codec->codec_tag = icodec->codec_tag;
2091             }
2092
2093             codec->bit_rate = icodec->bit_rate;
2094             codec->rc_max_rate    = icodec->rc_max_rate;
2095             codec->rc_buffer_size = icodec->rc_buffer_size;
2096             codec->extradata= av_mallocz(extra_size);
2097             if (!codec->extradata)
2098                 goto fail;
2099             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2100             codec->extradata_size= icodec->extradata_size;
2101             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){
2102                 codec->time_base = icodec->time_base;
2103                 codec->time_base.num *= icodec->ticks_per_frame;
2104                 av_reduce(&codec->time_base.num, &codec->time_base.den,
2105                           codec->time_base.num, codec->time_base.den, INT_MAX);
2106             }else
2107                 codec->time_base = ist->st->time_base;
2108             switch(codec->codec_type) {
2109             case AVMEDIA_TYPE_AUDIO:
2110                 if(audio_volume != 256) {
2111                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2112                     ffmpeg_exit(1);
2113                 }
2114                 codec->channel_layout = icodec->channel_layout;
2115                 codec->sample_rate = icodec->sample_rate;
2116                 codec->channels = icodec->channels;
2117                 codec->frame_size = icodec->frame_size;
2118                 codec->block_align= icodec->block_align;
2119                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2120                     codec->block_align= 0;
2121                 if(codec->codec_id == CODEC_ID_AC3)
2122                     codec->block_align= 0;
2123                 break;
2124             case AVMEDIA_TYPE_VIDEO:
2125                 codec->pix_fmt = icodec->pix_fmt;
2126                 codec->width = icodec->width;
2127                 codec->height = icodec->height;
2128                 codec->has_b_frames = icodec->has_b_frames;
2129                 break;
2130             case AVMEDIA_TYPE_SUBTITLE:
2131                 codec->width = icodec->width;
2132                 codec->height = icodec->height;
2133                 break;
2134             default:
2135                 abort();
2136             }
2137         } else {
2138             switch(codec->codec_type) {
2139             case AVMEDIA_TYPE_AUDIO:
2140                 ost->fifo= av_fifo_alloc(1024);
2141                 if(!ost->fifo)
2142                     goto fail;
2143                 ost->reformat_pair = MAKE_SFMT_PAIR(SAMPLE_FMT_NONE,SAMPLE_FMT_NONE);
2144                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2145                 icodec->request_channels = codec->channels;
2146                 ist->decoding_needed = 1;
2147                 ost->encoding_needed = 1;
2148                 break;
2149             case AVMEDIA_TYPE_VIDEO:
2150                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2151                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2152                     ffmpeg_exit(1);
2153                 }
2154                 ost->video_resample = (codec->width != icodec->width   ||
2155                                        codec->height != icodec->height ||
2156                         (codec->pix_fmt != icodec->pix_fmt));
2157                 if (ost->video_resample) {
2158                     avcodec_get_frame_defaults(&ost->pict_tmp);
2159                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2160                                          codec->width, codec->height)) {
2161                         fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
2162                         ffmpeg_exit(1);
2163                     }
2164                     sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
2165                     ost->img_resample_ctx = sws_getContext(
2166                         icodec->width,
2167                         icodec->height,
2168                             icodec->pix_fmt,
2169                             codec->width,
2170                             codec->height,
2171                             codec->pix_fmt,
2172                             sws_flags, NULL, NULL, NULL);
2173                     if (ost->img_resample_ctx == NULL) {
2174                         fprintf(stderr, "Cannot get resampling context\n");
2175                         ffmpeg_exit(1);
2176                     }
2177
2178 #if !CONFIG_AVFILTER
2179                     ost->original_height = icodec->height;
2180                     ost->original_width  = icodec->width;
2181 #endif
2182                     codec->bits_per_raw_sample= 0;
2183                 }
2184                 ost->resample_height = icodec->height;
2185                 ost->resample_width  = icodec->width;
2186                 ost->resample_pix_fmt= icodec->pix_fmt;
2187                 ost->encoding_needed = 1;
2188                 ist->decoding_needed = 1;
2189
2190 #if CONFIG_AVFILTER
2191                 if (configure_filters(ist, ost)) {
2192                     fprintf(stderr, "Error opening filters!\n");
2193                     exit(1);
2194                 }
2195 #endif
2196                 break;
2197             case AVMEDIA_TYPE_SUBTITLE:
2198                 ost->encoding_needed = 1;
2199                 ist->decoding_needed = 1;
2200                 break;
2201             default:
2202                 abort();
2203                 break;
2204             }
2205             /* two pass mode */
2206             if (ost->encoding_needed &&
2207                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2208                 char logfilename[1024];
2209                 FILE *f;
2210
2211                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2212                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2213                          i);
2214                 if (codec->flags & CODEC_FLAG_PASS1) {
2215                     f = fopen(logfilename, "wb");
2216                     if (!f) {
2217                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2218                         ffmpeg_exit(1);
2219                     }
2220                     ost->logfile = f;
2221                 } else {
2222                     char  *logbuffer;
2223                     size_t logbuffer_size;
2224                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2225                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2226                         ffmpeg_exit(1);
2227                     }
2228                     codec->stats_in = logbuffer;
2229                 }
2230             }
2231         }
2232         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2233             int size= codec->width * codec->height;
2234             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2235         }
2236     }
2237
2238     if (!bit_buffer)
2239         bit_buffer = av_malloc(bit_buffer_size);
2240     if (!bit_buffer) {
2241         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2242                 bit_buffer_size);
2243         ret = AVERROR(ENOMEM);
2244         goto fail;
2245     }
2246
2247     /* open each encoder */
2248     for(i=0;i<nb_ostreams;i++) {
2249         ost = ost_table[i];
2250         if (ost->encoding_needed) {
2251             AVCodec *codec = i < nb_output_codecs ? output_codecs[i] : NULL;
2252             if (!codec)
2253                 codec = avcodec_find_encoder(ost->st->codec->codec_id);
2254             if (!codec) {
2255                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2256                          ost->st->codec->codec_id, ost->file_index, ost->index);
2257                 ret = AVERROR(EINVAL);
2258                 goto dump_format;
2259             }
2260             if (avcodec_open(ost->st->codec, codec) < 0) {
2261                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2262                         ost->file_index, ost->index);
2263                 ret = AVERROR(EINVAL);
2264                 goto dump_format;
2265             }
2266             extra_size += ost->st->codec->extradata_size;
2267         }
2268     }
2269
2270     /* open each decoder */
2271     for(i=0;i<nb_istreams;i++) {
2272         ist = ist_table[i];
2273         if (ist->decoding_needed) {
2274             AVCodec *codec = i < nb_input_codecs ? input_codecs[i] : NULL;
2275             if (!codec)
2276                 codec = avcodec_find_decoder(ist->st->codec->codec_id);
2277             if (!codec) {
2278                 snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
2279                         ist->st->codec->codec_id, ist->file_index, ist->index);
2280                 ret = AVERROR(EINVAL);
2281                 goto dump_format;
2282             }
2283             if (avcodec_open(ist->st->codec, codec) < 0) {
2284                 snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
2285                         ist->file_index, ist->index);
2286                 ret = AVERROR(EINVAL);
2287                 goto dump_format;
2288             }
2289             //if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2290             //    ist->st->codec->flags |= CODEC_FLAG_REPEAT_FIELD;
2291         }
2292     }
2293
2294     /* init pts */
2295     for(i=0;i<nb_istreams;i++) {
2296         AVStream *st;
2297         ist = ist_table[i];
2298         st= ist->st;
2299         ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
2300         ist->next_pts = AV_NOPTS_VALUE;
2301         init_pts_correction(&ist->pts_ctx);
2302         ist->is_start = 1;
2303     }
2304
2305     /* set meta data information from input file if required */
2306     for (i=0;i<nb_meta_data_maps;i++) {
2307         AVFormatContext *out_file;
2308         AVFormatContext *in_file;
2309         AVMetadataTag *mtag;
2310
2311         int out_file_index = meta_data_maps[i].out_file;
2312         int in_file_index = meta_data_maps[i].in_file;
2313         if (out_file_index < 0 || out_file_index >= nb_output_files) {
2314             snprintf(error, sizeof(error), "Invalid output file index %d map_meta_data(%d,%d)",
2315                      out_file_index, out_file_index, in_file_index);
2316             ret = AVERROR(EINVAL);
2317             goto dump_format;
2318         }
2319         if (in_file_index < 0 || in_file_index >= nb_input_files) {
2320             snprintf(error, sizeof(error), "Invalid input file index %d map_meta_data(%d,%d)",
2321                      in_file_index, out_file_index, in_file_index);
2322             ret = AVERROR(EINVAL);
2323             goto dump_format;
2324         }
2325
2326         out_file = output_files[out_file_index];
2327         in_file = input_files[in_file_index];
2328
2329
2330         mtag=NULL;
2331         while((mtag=av_metadata_get(in_file->metadata, "", mtag, AV_METADATA_IGNORE_SUFFIX)))
2332             av_metadata_set2(&out_file->metadata, mtag->key, mtag->value, AV_METADATA_DONT_OVERWRITE);
2333     }
2334
2335     /* copy chapters from the first input file that has them*/
2336     for (i = 0; i < nb_input_files; i++) {
2337         if (!input_files[i]->nb_chapters)
2338             continue;
2339
2340         for (j = 0; j < nb_output_files; j++)
2341             if ((ret = copy_chapters(i, j)) < 0)
2342                 goto dump_format;
2343     }
2344
2345     /* open files and write file headers */
2346     for(i=0;i<nb_output_files;i++) {
2347         os = output_files[i];
2348         if (av_write_header(os) < 0) {
2349             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2350             ret = AVERROR(EINVAL);
2351             goto dump_format;
2352         }
2353         if (strcmp(output_files[i]->oformat->name, "rtp")) {
2354             want_sdp = 0;
2355         }
2356     }
2357
2358  dump_format:
2359     /* dump the file output parameters - cannot be done before in case
2360        of stream copy */
2361     for(i=0;i<nb_output_files;i++) {
2362         dump_format(output_files[i], i, output_files[i]->filename, 1);
2363     }
2364
2365     /* dump the stream mapping */
2366     if (verbose >= 0) {
2367         fprintf(stderr, "Stream mapping:\n");
2368         for(i=0;i<nb_ostreams;i++) {
2369             ost = ost_table[i];
2370             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2371                     ist_table[ost->source_index]->file_index,
2372                     ist_table[ost->source_index]->index,
2373                     ost->file_index,
2374                     ost->index);
2375             if (ost->sync_ist != ist_table[ost->source_index])
2376                 fprintf(stderr, " [sync #%d.%d]",
2377                         ost->sync_ist->file_index,
2378                         ost->sync_ist->index);
2379             fprintf(stderr, "\n");
2380         }
2381     }
2382
2383     if (ret) {
2384         fprintf(stderr, "%s\n", error);
2385         goto fail;
2386     }
2387
2388     if (want_sdp) {
2389         print_sdp(output_files, nb_output_files);
2390     }
2391
2392     if (!using_stdin && verbose >= 0) {
2393         fprintf(stderr, "Press [q] to stop encoding\n");
2394         url_set_interrupt_cb(decode_interrupt_cb);
2395     }
2396     term_init();
2397
2398     timer_start = av_gettime();
2399
2400     for(; received_sigterm == 0;) {
2401         int file_index, ist_index;
2402         AVPacket pkt;
2403         double ipts_min;
2404         double opts_min;
2405
2406     redo:
2407         ipts_min= 1e100;
2408         opts_min= 1e100;
2409         /* if 'q' pressed, exits */
2410         if (!using_stdin) {
2411             if (q_pressed)
2412                 break;
2413             /* read_key() returns 0 on EOF */
2414             key = read_key();
2415             if (key == 'q')
2416                 break;
2417         }
2418
2419         /* select the stream that we must read now by looking at the
2420            smallest output pts */
2421         file_index = -1;
2422         for(i=0;i<nb_ostreams;i++) {
2423             double ipts, opts;
2424             ost = ost_table[i];
2425             os = output_files[ost->file_index];
2426             ist = ist_table[ost->source_index];
2427             if(ist->is_past_recording_time || no_packet[ist->file_index])
2428                 continue;
2429                 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2430             ipts = (double)ist->pts;
2431             if (!file_table[ist->file_index].eof_reached){
2432                 if(ipts < ipts_min) {
2433                     ipts_min = ipts;
2434                     if(input_sync ) file_index = ist->file_index;
2435                 }
2436                 if(opts < opts_min) {
2437                     opts_min = opts;
2438                     if(!input_sync) file_index = ist->file_index;
2439                 }
2440             }
2441             if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
2442                 file_index= -1;
2443                 break;
2444             }
2445         }
2446         /* if none, if is finished */
2447         if (file_index < 0) {
2448             if(no_packet_count){
2449                 no_packet_count=0;
2450                 memset(no_packet, 0, sizeof(no_packet));
2451                 usleep(10000);
2452                 continue;
2453             }
2454             break;
2455         }
2456
2457         /* finish if limit size exhausted */
2458         if (limit_filesize != 0 && limit_filesize <= url_ftell(output_files[0]->pb))
2459             break;
2460
2461         /* read a frame from it and output it in the fifo */
2462         is = input_files[file_index];
2463         ret= av_read_frame(is, &pkt);
2464         if(ret == AVERROR(EAGAIN)){
2465             no_packet[file_index]=1;
2466             no_packet_count++;
2467             continue;
2468         }
2469         if (ret < 0) {
2470             file_table[file_index].eof_reached = 1;
2471             if (opt_shortest)
2472                 break;
2473             else
2474                 continue;
2475         }
2476
2477         no_packet_count=0;
2478         memset(no_packet, 0, sizeof(no_packet));
2479
2480         if (do_pkt_dump) {
2481             av_pkt_dump_log(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump);
2482         }
2483         /* the following test is needed in case new streams appear
2484            dynamically in stream : we ignore them */
2485         if (pkt.stream_index >= file_table[file_index].nb_streams)
2486             goto discard_packet;
2487         ist_index = file_table[file_index].ist_index + pkt.stream_index;
2488         ist = ist_table[ist_index];
2489         if (ist->discard)
2490             goto discard_packet;
2491
2492         if (pkt.dts != AV_NOPTS_VALUE)
2493             pkt.dts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2494         if (pkt.pts != AV_NOPTS_VALUE)
2495             pkt.pts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2496
2497         if (pkt.stream_index < nb_input_files_ts_scale[file_index]
2498             && input_files_ts_scale[file_index][pkt.stream_index]){
2499             if(pkt.pts != AV_NOPTS_VALUE)
2500                 pkt.pts *= input_files_ts_scale[file_index][pkt.stream_index];
2501             if(pkt.dts != AV_NOPTS_VALUE)
2502                 pkt.dts *= input_files_ts_scale[file_index][pkt.stream_index];
2503         }
2504
2505 //        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);
2506         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2507             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2508             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2509             int64_t delta= pkt_dts - ist->next_pts;
2510             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2511                 input_files_ts_offset[ist->file_index]-= delta;
2512                 if (verbose > 2)
2513                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n", delta, input_files_ts_offset[ist->file_index]);
2514                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2515                 if(pkt.pts != AV_NOPTS_VALUE)
2516                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2517             }
2518         }
2519
2520         /* finish if recording time exhausted */
2521         if (recording_time != INT64_MAX &&
2522             av_compare_ts(pkt.pts, ist->st->time_base, recording_time + start_time, (AVRational){1, 1000000}) >= 0) {
2523             ist->is_past_recording_time = 1;
2524             goto discard_packet;
2525         }
2526
2527         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->index, pkt.size);
2528         if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
2529
2530             if (verbose >= 0)
2531                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2532                         ist->file_index, ist->index);
2533             if (exit_on_error)
2534                 ffmpeg_exit(1);
2535             av_free_packet(&pkt);
2536             goto redo;
2537         }
2538
2539     discard_packet:
2540         av_free_packet(&pkt);
2541
2542         /* dump report by using the output first video and audio streams */
2543         print_report(output_files, ost_table, nb_ostreams, 0);
2544     }
2545
2546     /* at the end of stream, we must flush the decoder buffers */
2547     for(i=0;i<nb_istreams;i++) {
2548         ist = ist_table[i];
2549         if (ist->decoding_needed) {
2550             output_packet(ist, i, ost_table, nb_ostreams, NULL);
2551         }
2552     }
2553
2554     term_exit();
2555
2556     /* write the trailer if needed and close file */
2557     for(i=0;i<nb_output_files;i++) {
2558         os = output_files[i];
2559         av_write_trailer(os);
2560     }
2561
2562     /* dump report by using the first video and audio streams */
2563     print_report(output_files, ost_table, nb_ostreams, 1);
2564
2565     /* close each encoder */
2566     for(i=0;i<nb_ostreams;i++) {
2567         ost = ost_table[i];
2568         if (ost->encoding_needed) {
2569             av_freep(&ost->st->codec->stats_in);
2570             avcodec_close(ost->st->codec);
2571         }
2572     }
2573
2574     /* close each decoder */
2575     for(i=0;i<nb_istreams;i++) {
2576         ist = ist_table[i];
2577         if (ist->decoding_needed) {
2578             avcodec_close(ist->st->codec);
2579         }
2580     }
2581 #if CONFIG_AVFILTER
2582     if (graph) {
2583         avfilter_graph_destroy(graph);
2584         av_freep(&graph);
2585     }
2586 #endif
2587
2588     /* finished ! */
2589     ret = 0;
2590
2591  fail:
2592     av_freep(&bit_buffer);
2593     av_free(file_table);
2594
2595     if (ist_table) {
2596         for(i=0;i<nb_istreams;i++) {
2597             ist = ist_table[i];
2598             av_free(ist);
2599         }
2600         av_free(ist_table);
2601     }
2602     if (ost_table) {
2603         for(i=0;i<nb_ostreams;i++) {
2604             ost = ost_table[i];
2605             if (ost) {
2606                 if (ost->st->stream_copy)
2607                     av_freep(&ost->st->codec->extradata);
2608                 if (ost->logfile) {
2609                     fclose(ost->logfile);
2610                     ost->logfile = NULL;
2611                 }
2612                 av_fifo_free(ost->fifo); /* works even if fifo is not
2613                                              initialized but set to zero */
2614                 av_free(ost->pict_tmp.data[0]);
2615                 av_free(ost->forced_kf_pts);
2616                 if (ost->video_resample)
2617                     sws_freeContext(ost->img_resample_ctx);
2618                 if (ost->resample)
2619                     audio_resample_close(ost->resample);
2620                 if (ost->reformat_ctx)
2621                     av_audio_convert_free(ost->reformat_ctx);
2622                 av_free(ost);
2623             }
2624         }
2625         av_free(ost_table);
2626     }
2627     return ret;
2628 }
2629
2630 static void opt_format(const char *arg)
2631 {
2632     /* compatibility stuff for pgmyuv */
2633     if (!strcmp(arg, "pgmyuv")) {
2634         pgmyuv_compatibility_hack=1;
2635 //        opt_image_format(arg);
2636         arg = "image2";
2637         fprintf(stderr, "pgmyuv format is deprecated, use image2\n");
2638     }
2639
2640     last_asked_format = arg;
2641 }
2642
2643 static void opt_video_rc_override_string(const char *arg)
2644 {
2645     video_rc_override_string = arg;
2646 }
2647
2648 static int opt_me_threshold(const char *opt, const char *arg)
2649 {
2650     me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2651     return 0;
2652 }
2653
2654 static int opt_verbose(const char *opt, const char *arg)
2655 {
2656     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2657     return 0;
2658 }
2659
2660 static int opt_frame_rate(const char *opt, const char *arg)
2661 {
2662     if (av_parse_video_rate(&frame_rate, arg) < 0) {
2663         fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2664         ffmpeg_exit(1);
2665     }
2666     return 0;
2667 }
2668
2669 static int opt_bitrate(const char *opt, const char *arg)
2670 {
2671     int codec_type = opt[0]=='a' ? AVMEDIA_TYPE_AUDIO : AVMEDIA_TYPE_VIDEO;
2672
2673     opt_default(opt, arg);
2674
2675     if (av_get_int(avcodec_opts[codec_type], "b", NULL) < 1000)
2676         fprintf(stderr, "WARNING: The bitrate parameter is set too low. It takes bits/s as argument, not kbits/s\n");
2677
2678     return 0;
2679 }
2680
2681 static int opt_frame_crop(const char *opt, const char *arg)
2682 {
2683     fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
2684     return AVERROR(EINVAL);
2685 }
2686
2687 static void opt_frame_size(const char *arg)
2688 {
2689     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2690         fprintf(stderr, "Incorrect frame size\n");
2691         ffmpeg_exit(1);
2692     }
2693 }
2694
2695 static int opt_pad(const char *opt, const char *arg) {
2696     fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2697     return -1;
2698 }
2699
2700 static void opt_frame_pix_fmt(const char *arg)
2701 {
2702     if (strcmp(arg, "list")) {
2703         frame_pix_fmt = av_get_pix_fmt(arg);
2704         if (frame_pix_fmt == PIX_FMT_NONE) {
2705             fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2706             ffmpeg_exit(1);
2707         }
2708     } else {
2709         show_pix_fmts();
2710         ffmpeg_exit(0);
2711     }
2712 }
2713
2714 static void opt_frame_aspect_ratio(const char *arg)
2715 {
2716     int x = 0, y = 0;
2717     double ar = 0;
2718     const char *p;
2719     char *end;
2720
2721     p = strchr(arg, ':');
2722     if (p) {
2723         x = strtol(arg, &end, 10);
2724         if (end == p)
2725             y = strtol(end+1, &end, 10);
2726         if (x > 0 && y > 0)
2727             ar = (double)x / (double)y;
2728     } else
2729         ar = strtod(arg, NULL);
2730
2731     if (!ar) {
2732         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2733         ffmpeg_exit(1);
2734     }
2735     frame_aspect_ratio = ar;
2736 }
2737
2738 static int opt_metadata(const char *opt, const char *arg)
2739 {
2740     char *mid= strchr(arg, '=');
2741
2742     if(!mid){
2743         fprintf(stderr, "Missing =\n");
2744         ffmpeg_exit(1);
2745     }
2746     *mid++= 0;
2747
2748     av_metadata_set2(&metadata, arg, mid, 0);
2749
2750     return 0;
2751 }
2752
2753 static void opt_qscale(const char *arg)
2754 {
2755     video_qscale = atof(arg);
2756     if (video_qscale <= 0 ||
2757         video_qscale > 255) {
2758         fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2759         ffmpeg_exit(1);
2760     }
2761 }
2762
2763 static void opt_top_field_first(const char *arg)
2764 {
2765     top_field_first= atoi(arg);
2766 }
2767
2768 static int opt_thread_count(const char *opt, const char *arg)
2769 {
2770     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2771 #if !HAVE_THREADS
2772     if (verbose >= 0)
2773         fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2774 #endif
2775     return 0;
2776 }
2777
2778 static void opt_audio_sample_fmt(const char *arg)
2779 {
2780     if (strcmp(arg, "list"))
2781         audio_sample_fmt = avcodec_get_sample_fmt(arg);
2782     else {
2783         list_fmts(avcodec_sample_fmt_string, SAMPLE_FMT_NB);
2784         ffmpeg_exit(0);
2785     }
2786 }
2787
2788 static int opt_audio_rate(const char *opt, const char *arg)
2789 {
2790     audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2791     return 0;
2792 }
2793
2794 static int opt_audio_channels(const char *opt, const char *arg)
2795 {
2796     audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2797     return 0;
2798 }
2799
2800 static void opt_video_channel(const char *arg)
2801 {
2802     video_channel = strtol(arg, NULL, 0);
2803 }
2804
2805 static void opt_video_standard(const char *arg)
2806 {
2807     video_standard = av_strdup(arg);
2808 }
2809
2810 static void opt_codec(int *pstream_copy, char **pcodec_name,
2811                       int codec_type, const char *arg)
2812 {
2813     av_freep(pcodec_name);
2814     if (!strcmp(arg, "copy")) {
2815         *pstream_copy = 1;
2816     } else {
2817         *pcodec_name = av_strdup(arg);
2818     }
2819 }
2820
2821 static void opt_audio_codec(const char *arg)
2822 {
2823     opt_codec(&audio_stream_copy, &audio_codec_name, AVMEDIA_TYPE_AUDIO, arg);
2824 }
2825
2826 static void opt_audio_tag(const char *arg)
2827 {
2828     char *tail;
2829     audio_codec_tag= strtol(arg, &tail, 0);
2830
2831     if(!tail || *tail)
2832         audio_codec_tag= arg[0] + (arg[1]<<8) + (arg[2]<<16) + (arg[3]<<24);
2833 }
2834
2835 static void opt_video_tag(const char *arg)
2836 {
2837     char *tail;
2838     video_codec_tag= strtol(arg, &tail, 0);
2839
2840     if(!tail || *tail)
2841         video_codec_tag= arg[0] + (arg[1]<<8) + (arg[2]<<16) + (arg[3]<<24);
2842 }
2843
2844 static void opt_video_codec(const char *arg)
2845 {
2846     opt_codec(&video_stream_copy, &video_codec_name, AVMEDIA_TYPE_VIDEO, arg);
2847 }
2848
2849 static void opt_subtitle_codec(const char *arg)
2850 {
2851     opt_codec(&subtitle_stream_copy, &subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, arg);
2852 }
2853
2854 static void opt_subtitle_tag(const char *arg)
2855 {
2856     char *tail;
2857     subtitle_codec_tag= strtol(arg, &tail, 0);
2858
2859     if(!tail || *tail)
2860         subtitle_codec_tag= arg[0] + (arg[1]<<8) + (arg[2]<<16) + (arg[3]<<24);
2861 }
2862
2863 static void opt_map(const char *arg)
2864 {
2865     AVStreamMap *m;
2866     char *p;
2867
2868     stream_maps = grow_array(stream_maps, sizeof(*stream_maps), &nb_stream_maps, nb_stream_maps + 1);
2869     m = &stream_maps[nb_stream_maps-1];
2870
2871     m->file_index = strtol(arg, &p, 0);
2872     if (*p)
2873         p++;
2874
2875     m->stream_index = strtol(p, &p, 0);
2876     if (*p) {
2877         p++;
2878         m->sync_file_index = strtol(p, &p, 0);
2879         if (*p)
2880             p++;
2881         m->sync_stream_index = strtol(p, &p, 0);
2882     } else {
2883         m->sync_file_index = m->file_index;
2884         m->sync_stream_index = m->stream_index;
2885     }
2886 }
2887
2888 static void opt_map_meta_data(const char *arg)
2889 {
2890     AVMetaDataMap *m;
2891     char *p;
2892
2893     m = &meta_data_maps[nb_meta_data_maps++];
2894
2895     m->out_file = strtol(arg, &p, 0);
2896     if (*p)
2897         p++;
2898
2899     m->in_file = strtol(p, &p, 0);
2900 }
2901
2902 static void opt_input_ts_scale(const char *arg)
2903 {
2904     unsigned int stream;
2905     double scale;
2906     char *p;
2907
2908     stream = strtol(arg, &p, 0);
2909     if (*p)
2910         p++;
2911     scale= strtod(p, &p);
2912
2913     if(stream >= MAX_STREAMS)
2914         ffmpeg_exit(1);
2915
2916     input_files_ts_scale[nb_input_files] = grow_array(input_files_ts_scale[nb_input_files], sizeof(*input_files_ts_scale[nb_input_files]), &nb_input_files_ts_scale[nb_input_files], stream + 1);
2917     input_files_ts_scale[nb_input_files][stream]= scale;
2918 }
2919
2920 static int opt_recording_time(const char *opt, const char *arg)
2921 {
2922     recording_time = parse_time_or_die(opt, arg, 1);
2923     return 0;
2924 }
2925
2926 static int opt_start_time(const char *opt, const char *arg)
2927 {
2928     start_time = parse_time_or_die(opt, arg, 1);
2929     return 0;
2930 }
2931
2932 static int opt_recording_timestamp(const char *opt, const char *arg)
2933 {
2934     recording_timestamp = parse_time_or_die(opt, arg, 0) / 1000000;
2935     return 0;
2936 }
2937
2938 static int opt_input_ts_offset(const char *opt, const char *arg)
2939 {
2940     input_ts_offset = parse_time_or_die(opt, arg, 1);
2941     return 0;
2942 }
2943
2944 static enum CodecID find_codec_or_die(const char *name, int type, int encoder, int strict)
2945 {
2946     const char *codec_string = encoder ? "encoder" : "decoder";
2947     AVCodec *codec;
2948
2949     if(!name)
2950         return CODEC_ID_NONE;
2951     codec = encoder ?
2952         avcodec_find_encoder_by_name(name) :
2953         avcodec_find_decoder_by_name(name);
2954     if(!codec) {
2955         fprintf(stderr, "Unknown %s '%s'\n", codec_string, name);
2956         ffmpeg_exit(1);
2957     }
2958     if(codec->type != type) {
2959         fprintf(stderr, "Invalid %s type '%s'\n", codec_string, name);
2960         ffmpeg_exit(1);
2961     }
2962     if(codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
2963        strict > FF_COMPLIANCE_EXPERIMENTAL) {
2964         fprintf(stderr, "%s '%s' is experimental and might produce bad "
2965                 "results.\nAdd '-strict experimental' if you want to use it.\n",
2966                 codec_string, codec->name);
2967         codec = encoder ?
2968             avcodec_find_encoder(codec->id) :
2969             avcodec_find_decoder(codec->id);
2970         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
2971             fprintf(stderr, "Or use the non experimental %s '%s'.\n",
2972                     codec_string, codec->name);
2973         ffmpeg_exit(1);
2974     }
2975     return codec->id;
2976 }
2977
2978 static void opt_input_file(const char *filename)
2979 {
2980     AVFormatContext *ic;
2981     AVFormatParameters params, *ap = &params;
2982     AVInputFormat *file_iformat = NULL;
2983     int err, i, ret, rfps, rfps_base;
2984     int64_t timestamp;
2985
2986     if (last_asked_format) {
2987         if (!(file_iformat = av_find_input_format(last_asked_format))) {
2988             fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
2989             ffmpeg_exit(1);
2990         }
2991         last_asked_format = NULL;
2992     }
2993
2994     if (!strcmp(filename, "-"))
2995         filename = "pipe:";
2996
2997     using_stdin |= !strncmp(filename, "pipe:", 5) ||
2998                     !strcmp(filename, "/dev/stdin");
2999
3000     /* get default parameters from command line */
3001     ic = avformat_alloc_context();
3002     if (!ic) {
3003         print_error(filename, AVERROR(ENOMEM));
3004         ffmpeg_exit(1);
3005     }
3006
3007     memset(ap, 0, sizeof(*ap));
3008     ap->prealloced_context = 1;
3009     ap->sample_rate = audio_sample_rate;
3010     ap->channels = audio_channels;
3011     ap->time_base.den = frame_rate.num;
3012     ap->time_base.num = frame_rate.den;
3013     ap->width = frame_width;
3014     ap->height = frame_height;
3015     ap->pix_fmt = frame_pix_fmt;
3016    // ap->sample_fmt = audio_sample_fmt; //FIXME:not implemented in libavformat
3017     ap->channel = video_channel;
3018     ap->standard = video_standard;
3019
3020     set_context_opts(ic, avformat_opts, AV_OPT_FLAG_DECODING_PARAM, NULL);
3021
3022     ic->video_codec_id   =
3023         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0,
3024                           avcodec_opts[AVMEDIA_TYPE_VIDEO   ]->strict_std_compliance);
3025     ic->audio_codec_id   =
3026         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0,
3027                           avcodec_opts[AVMEDIA_TYPE_AUDIO   ]->strict_std_compliance);
3028     ic->subtitle_codec_id=
3029         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0,
3030                           avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->strict_std_compliance);
3031     ic->flags |= AVFMT_FLAG_NONBLOCK;
3032
3033     if(pgmyuv_compatibility_hack)
3034         ic->video_codec_id= CODEC_ID_PGMYUV;
3035
3036     /* open the input file with generic libav function */
3037     err = av_open_input_file(&ic, filename, file_iformat, 0, ap);
3038     if (err < 0) {
3039         print_error(filename, err);
3040         ffmpeg_exit(1);
3041     }
3042     if(opt_programid) {
3043         int i, j;
3044         int found=0;
3045         for(i=0; i<ic->nb_streams; i++){
3046             ic->streams[i]->discard= AVDISCARD_ALL;
3047         }
3048         for(i=0; i<ic->nb_programs; i++){
3049             AVProgram *p= ic->programs[i];
3050             if(p->id != opt_programid){
3051                 p->discard = AVDISCARD_ALL;
3052             }else{
3053                 found=1;
3054                 for(j=0; j<p->nb_stream_indexes; j++){
3055                     ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
3056                 }
3057             }
3058         }
3059         if(!found){
3060             fprintf(stderr, "Specified program id not found\n");
3061             ffmpeg_exit(1);
3062         }
3063         opt_programid=0;
3064     }
3065
3066     ic->loop_input = loop_input;
3067
3068     /* If not enough info to get the stream parameters, we decode the
3069        first frames to get it. (used in mpeg case for example) */
3070     ret = av_find_stream_info(ic);
3071     if (ret < 0 && verbose >= 0) {
3072         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3073         av_close_input_file(ic);
3074         ffmpeg_exit(1);
3075     }
3076
3077     timestamp = start_time;
3078     /* add the stream start time */
3079     if (ic->start_time != AV_NOPTS_VALUE)
3080         timestamp += ic->start_time;
3081
3082     /* if seeking requested, we execute it */
3083     if (start_time != 0) {
3084         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3085         if (ret < 0) {
3086             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3087                     filename, (double)timestamp / AV_TIME_BASE);
3088         }
3089         /* reset seek info */
3090         start_time = 0;
3091     }
3092
3093     /* update the current parameters so that they match the one of the input stream */
3094     for(i=0;i<ic->nb_streams;i++) {
3095         AVStream *st = ic->streams[i];
3096         AVCodecContext *dec = st->codec;
3097         avcodec_thread_init(dec, thread_count);
3098         input_codecs = grow_array(input_codecs, sizeof(*input_codecs), &nb_input_codecs, nb_input_codecs + 1);
3099         switch (dec->codec_type) {
3100         case AVMEDIA_TYPE_AUDIO:
3101             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(audio_codec_name);
3102             set_context_opts(dec, avcodec_opts[AVMEDIA_TYPE_AUDIO], AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM, input_codecs[nb_input_codecs-1]);
3103             //fprintf(stderr, "\nInput Audio channels: %d", dec->channels);
3104             channel_layout    = dec->channel_layout;
3105             audio_channels    = dec->channels;
3106             audio_sample_rate = dec->sample_rate;
3107             audio_sample_fmt  = dec->sample_fmt;
3108             if(audio_disable)
3109                 st->discard= AVDISCARD_ALL;
3110             /* Note that av_find_stream_info can add more streams, and we
3111              * currently have no chance of setting up lowres decoding
3112              * early enough for them. */
3113             if (dec->lowres)
3114                 audio_sample_rate >>= dec->lowres;
3115             break;
3116         case AVMEDIA_TYPE_VIDEO:
3117             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(video_codec_name);
3118             set_context_opts(dec, avcodec_opts[AVMEDIA_TYPE_VIDEO], AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM, input_codecs[nb_input_codecs-1]);
3119             frame_height = dec->height;
3120             frame_width  = dec->width;
3121             if(ic->streams[i]->sample_aspect_ratio.num)
3122                 frame_aspect_ratio=av_q2d(ic->streams[i]->sample_aspect_ratio);
3123             else
3124                 frame_aspect_ratio=av_q2d(dec->sample_aspect_ratio);
3125             frame_aspect_ratio *= (float) dec->width / dec->height;
3126             frame_pix_fmt = dec->pix_fmt;
3127             rfps      = ic->streams[i]->r_frame_rate.num;
3128             rfps_base = ic->streams[i]->r_frame_rate.den;
3129             if (dec->lowres) {
3130                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3131                 frame_height >>= dec->lowres;
3132                 frame_width  >>= dec->lowres;
3133             }
3134             if(me_threshold)
3135                 dec->debug |= FF_DEBUG_MV;
3136
3137             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3138
3139                 if (verbose >= 0)
3140                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3141                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3142
3143                     (float)rfps / rfps_base, rfps, rfps_base);
3144             }
3145             /* update the current frame rate to match the stream frame rate */
3146             frame_rate.num = rfps;
3147             frame_rate.den = rfps_base;
3148
3149             if(video_disable)
3150                 st->discard= AVDISCARD_ALL;
3151             else if(video_discard)
3152                 st->discard= video_discard;
3153             break;
3154         case AVMEDIA_TYPE_DATA:
3155             break;
3156         case AVMEDIA_TYPE_SUBTITLE:
3157             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(subtitle_codec_name);
3158             if(subtitle_disable)
3159                 st->discard = AVDISCARD_ALL;
3160             break;
3161         case AVMEDIA_TYPE_ATTACHMENT:
3162         case AVMEDIA_TYPE_UNKNOWN:
3163             break;
3164         default:
3165             abort();
3166         }
3167     }
3168
3169     input_files[nb_input_files] = ic;
3170     input_files_ts_offset[nb_input_files] = input_ts_offset - (copy_ts ? 0 : timestamp);
3171     /* dump the file content */
3172     if (verbose >= 0)
3173         dump_format(ic, nb_input_files, filename, 0);
3174
3175     nb_input_files++;
3176
3177     video_channel = 0;
3178
3179     av_freep(&video_codec_name);
3180     av_freep(&audio_codec_name);
3181     av_freep(&subtitle_codec_name);
3182 }
3183
3184 static void check_audio_video_sub_inputs(int *has_video_ptr, int *has_audio_ptr,
3185                                          int *has_subtitle_ptr)
3186 {
3187     int has_video, has_audio, has_subtitle, i, j;
3188     AVFormatContext *ic;
3189
3190     has_video = 0;
3191     has_audio = 0;
3192     has_subtitle = 0;
3193     for(j=0;j<nb_input_files;j++) {
3194         ic = input_files[j];
3195         for(i=0;i<ic->nb_streams;i++) {
3196             AVCodecContext *enc = ic->streams[i]->codec;
3197             switch(enc->codec_type) {
3198             case AVMEDIA_TYPE_AUDIO:
3199                 has_audio = 1;
3200                 break;
3201             case AVMEDIA_TYPE_VIDEO:
3202                 has_video = 1;
3203                 break;
3204             case AVMEDIA_TYPE_SUBTITLE:
3205                 has_subtitle = 1;
3206                 break;
3207             case AVMEDIA_TYPE_DATA:
3208             case AVMEDIA_TYPE_ATTACHMENT:
3209             case AVMEDIA_TYPE_UNKNOWN:
3210                 break;
3211             default:
3212                 abort();
3213             }
3214         }
3215     }
3216     *has_video_ptr = has_video;
3217     *has_audio_ptr = has_audio;
3218     *has_subtitle_ptr = has_subtitle;
3219 }
3220
3221 static AVOutputStream *new_output_stream(AVFormatContext *oc, int file_idx)
3222 {
3223     int idx = oc->nb_streams - 1;
3224     AVOutputStream *ost;
3225
3226     output_streams_for_file[file_idx] =
3227         grow_array(output_streams_for_file[file_idx],
3228                    sizeof(*output_streams_for_file[file_idx]),
3229                    &nb_output_streams_for_file[file_idx],
3230                    oc->nb_streams);
3231     ost = output_streams_for_file[file_idx][idx] =
3232         av_mallocz(sizeof(AVOutputStream));
3233     if (!ost) {
3234         fprintf(stderr, "Could not alloc output stream\n");
3235         ffmpeg_exit(1);
3236     }
3237     ost->file_index = file_idx;
3238     ost->index = idx;
3239     return ost;
3240 }
3241
3242 static void new_video_stream(AVFormatContext *oc, int file_idx)
3243 {
3244     AVStream *st;
3245     AVOutputStream *ost;
3246     AVCodecContext *video_enc;
3247     enum CodecID codec_id;
3248     AVCodec *codec= NULL;
3249
3250     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3251     if (!st) {
3252         fprintf(stderr, "Could not alloc stream\n");
3253         ffmpeg_exit(1);
3254     }
3255     ost = new_output_stream(oc, file_idx);
3256
3257     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3258     if(!video_stream_copy){
3259         if (video_codec_name) {
3260             codec_id = find_codec_or_die(video_codec_name, AVMEDIA_TYPE_VIDEO, 1,
3261                                          avcodec_opts[AVMEDIA_TYPE_VIDEO]->strict_std_compliance);
3262             codec = avcodec_find_encoder_by_name(video_codec_name);
3263             output_codecs[nb_output_codecs-1] = codec;
3264         } else {
3265             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_VIDEO);
3266             codec = avcodec_find_encoder(codec_id);
3267         }
3268     }
3269
3270     avcodec_get_context_defaults3(st->codec, codec);
3271     ost->bitstream_filters = video_bitstream_filters;
3272     video_bitstream_filters= NULL;
3273
3274     avcodec_thread_init(st->codec, thread_count);
3275
3276     video_enc = st->codec;
3277
3278     if(video_codec_tag)
3279         video_enc->codec_tag= video_codec_tag;
3280
3281     if(   (video_global_header&1)
3282        || (video_global_header==0 && (oc->oformat->flags & AVFMT_GLOBALHEADER))){
3283         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3284         avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3285     }
3286     if(video_global_header&2){
3287         video_enc->flags2 |= CODEC_FLAG2_LOCAL_HEADER;
3288         avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags2|= CODEC_FLAG2_LOCAL_HEADER;
3289     }
3290
3291     if (video_stream_copy) {
3292         st->stream_copy = 1;
3293         video_enc->codec_type = AVMEDIA_TYPE_VIDEO;
3294         video_enc->sample_aspect_ratio =
3295         st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3296     } else {
3297         const char *p;
3298         int i;
3299         AVRational fps= frame_rate.num ? frame_rate : (AVRational){25,1};
3300
3301         video_enc->codec_id = codec_id;
3302         set_context_opts(video_enc, avcodec_opts[AVMEDIA_TYPE_VIDEO], AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3303
3304         if (codec && codec->supported_framerates && !force_fps)
3305             fps = codec->supported_framerates[av_find_nearest_q_idx(fps, codec->supported_framerates)];
3306         video_enc->time_base.den = fps.num;
3307         video_enc->time_base.num = fps.den;
3308
3309         video_enc->width = frame_width;
3310         video_enc->height = frame_height;
3311         video_enc->sample_aspect_ratio = av_d2q(frame_aspect_ratio*video_enc->height/video_enc->width, 255);
3312         video_enc->pix_fmt = frame_pix_fmt;
3313         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3314
3315         choose_pixel_fmt(st, codec);
3316
3317         if (intra_only)
3318             video_enc->gop_size = 0;
3319         if (video_qscale || same_quality) {
3320             video_enc->flags |= CODEC_FLAG_QSCALE;
3321             video_enc->global_quality=
3322                 st->quality = FF_QP2LAMBDA * video_qscale;
3323         }
3324
3325         if(intra_matrix)
3326             video_enc->intra_matrix = intra_matrix;
3327         if(inter_matrix)
3328             video_enc->inter_matrix = inter_matrix;
3329
3330         p= video_rc_override_string;
3331         for(i=0; p; i++){
3332             int start, end, q;
3333             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3334             if(e!=3){
3335                 fprintf(stderr, "error parsing rc_override\n");
3336                 ffmpeg_exit(1);
3337             }
3338             video_enc->rc_override=
3339                 av_realloc(video_enc->rc_override,
3340                            sizeof(RcOverride)*(i+1));
3341             video_enc->rc_override[i].start_frame= start;
3342             video_enc->rc_override[i].end_frame  = end;
3343             if(q>0){
3344                 video_enc->rc_override[i].qscale= q;
3345                 video_enc->rc_override[i].quality_factor= 1.0;
3346             }
3347             else{
3348                 video_enc->rc_override[i].qscale= 0;
3349                 video_enc->rc_override[i].quality_factor= -q/100.0;
3350             }
3351             p= strchr(p, '/');
3352             if(p) p++;
3353         }
3354         video_enc->rc_override_count=i;
3355         if (!video_enc->rc_initial_buffer_occupancy)
3356             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3357         video_enc->me_threshold= me_threshold;
3358         video_enc->intra_dc_precision= intra_dc_precision - 8;
3359
3360         if (do_psnr)
3361             video_enc->flags|= CODEC_FLAG_PSNR;
3362
3363         /* two pass mode */
3364         if (do_pass) {
3365             if (do_pass == 1) {
3366                 video_enc->flags |= CODEC_FLAG_PASS1;
3367             } else {
3368                 video_enc->flags |= CODEC_FLAG_PASS2;
3369             }
3370         }
3371
3372         if (forced_key_frames)
3373             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3374     }
3375     if (video_language) {
3376         av_metadata_set2(&st->metadata, "language", video_language, 0);
3377         av_freep(&video_language);
3378     }
3379
3380     /* reset some key parameters */
3381     video_disable = 0;
3382     av_freep(&video_codec_name);
3383     av_freep(&forced_key_frames);
3384     video_stream_copy = 0;
3385     frame_pix_fmt = PIX_FMT_NONE;
3386 }
3387
3388 static void new_audio_stream(AVFormatContext *oc, int file_idx)
3389 {
3390     AVStream *st;
3391     AVOutputStream *ost;
3392     AVCodec *codec= NULL;
3393     AVCodecContext *audio_enc;
3394     enum CodecID codec_id;
3395
3396     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3397     if (!st) {
3398         fprintf(stderr, "Could not alloc stream\n");
3399         ffmpeg_exit(1);
3400     }
3401     ost = new_output_stream(oc, file_idx);
3402
3403     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3404     if(!audio_stream_copy){
3405         if (audio_codec_name) {
3406             codec_id = find_codec_or_die(audio_codec_name, AVMEDIA_TYPE_AUDIO, 1,
3407                                          avcodec_opts[AVMEDIA_TYPE_AUDIO]->strict_std_compliance);
3408             codec = avcodec_find_encoder_by_name(audio_codec_name);
3409             output_codecs[nb_output_codecs-1] = codec;
3410         } else {
3411             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_AUDIO);
3412             codec = avcodec_find_encoder(codec_id);
3413         }
3414     }
3415
3416     avcodec_get_context_defaults3(st->codec, codec);
3417
3418     ost->bitstream_filters = audio_bitstream_filters;
3419     audio_bitstream_filters= NULL;
3420
3421     avcodec_thread_init(st->codec, thread_count);
3422
3423     audio_enc = st->codec;
3424     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3425
3426     if(audio_codec_tag)
3427         audio_enc->codec_tag= audio_codec_tag;
3428
3429     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3430         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3431         avcodec_opts[AVMEDIA_TYPE_AUDIO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3432     }
3433     if (audio_stream_copy) {
3434         st->stream_copy = 1;
3435         audio_enc->channels = audio_channels;
3436         audio_enc->sample_rate = audio_sample_rate;
3437     } else {
3438         audio_enc->codec_id = codec_id;
3439         set_context_opts(audio_enc, avcodec_opts[AVMEDIA_TYPE_AUDIO], AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3440
3441         if (audio_qscale > QSCALE_NONE) {
3442             audio_enc->flags |= CODEC_FLAG_QSCALE;
3443             audio_enc->global_quality = st->quality = FF_QP2LAMBDA * audio_qscale;
3444         }
3445         audio_enc->channels = audio_channels;
3446         audio_enc->sample_fmt = audio_sample_fmt;
3447         audio_enc->sample_rate = audio_sample_rate;
3448         audio_enc->channel_layout = channel_layout;
3449         if (avcodec_channel_layout_num_channels(channel_layout) != audio_channels)
3450             audio_enc->channel_layout = 0;
3451         choose_sample_fmt(st, codec);
3452         choose_sample_rate(st, codec);
3453     }
3454     audio_enc->time_base= (AVRational){1, audio_sample_rate};
3455     if (audio_language) {
3456         av_metadata_set2(&st->metadata, "language", audio_language, 0);
3457         av_freep(&audio_language);
3458     }
3459
3460     /* reset some key parameters */
3461     audio_disable = 0;
3462     av_freep(&audio_codec_name);
3463     audio_stream_copy = 0;
3464 }
3465
3466 static void new_subtitle_stream(AVFormatContext *oc, int file_idx)
3467 {
3468     AVStream *st;
3469     AVOutputStream *ost;
3470     AVCodec *codec=NULL;
3471     AVCodecContext *subtitle_enc;
3472
3473     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3474     if (!st) {
3475         fprintf(stderr, "Could not alloc stream\n");
3476         ffmpeg_exit(1);
3477     }
3478     ost = new_output_stream(oc, file_idx);
3479     subtitle_enc = st->codec;
3480     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3481     if(!subtitle_stream_copy){
3482         subtitle_enc->codec_id = find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 1,
3483                                                    avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->strict_std_compliance);
3484         codec= output_codecs[nb_output_codecs-1] = avcodec_find_encoder_by_name(subtitle_codec_name);
3485     }
3486     avcodec_get_context_defaults3(st->codec, codec);
3487
3488     ost->bitstream_filters = subtitle_bitstream_filters;
3489     subtitle_bitstream_filters= NULL;
3490
3491     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3492
3493     if(subtitle_codec_tag)
3494         subtitle_enc->codec_tag= subtitle_codec_tag;
3495
3496     if (subtitle_stream_copy) {
3497         st->stream_copy = 1;
3498     } else {
3499         set_context_opts(avcodec_opts[AVMEDIA_TYPE_SUBTITLE], subtitle_enc, AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3500     }
3501
3502     if (subtitle_language) {
3503         av_metadata_set2(&st->metadata, "language", subtitle_language, 0);
3504         av_freep(&subtitle_language);
3505     }
3506
3507     subtitle_disable = 0;
3508     av_freep(&subtitle_codec_name);
3509     subtitle_stream_copy = 0;
3510 }
3511
3512 static int opt_new_stream(const char *opt, const char *arg)
3513 {
3514     AVFormatContext *oc;
3515     int file_idx = nb_output_files - 1;
3516     if (nb_output_files <= 0) {
3517         fprintf(stderr, "At least one output file must be specified\n");
3518         ffmpeg_exit(1);
3519     }
3520     oc = output_files[file_idx];
3521
3522     if      (!strcmp(opt, "newvideo"   )) new_video_stream   (oc, file_idx);
3523     else if (!strcmp(opt, "newaudio"   )) new_audio_stream   (oc, file_idx);
3524     else if (!strcmp(opt, "newsubtitle")) new_subtitle_stream(oc, file_idx);
3525     else av_assert0(0);
3526     return 0;
3527 }
3528
3529 /* arg format is "output-stream-index:streamid-value". */
3530 static int opt_streamid(const char *opt, const char *arg)
3531 {
3532     int idx;
3533     char *p;
3534     char idx_str[16];
3535
3536     strncpy(idx_str, arg, sizeof(idx_str));
3537     idx_str[sizeof(idx_str)-1] = '\0';
3538     p = strchr(idx_str, ':');
3539     if (!p) {
3540         fprintf(stderr,
3541                 "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3542                 arg, opt);
3543         ffmpeg_exit(1);
3544     }
3545     *p++ = '\0';
3546     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, MAX_STREAMS-1);
3547     streamid_map = grow_array(streamid_map, sizeof(*streamid_map), &nb_streamid_map, idx+1);
3548     streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3549     return 0;
3550 }
3551
3552 static void opt_output_file(const char *filename)
3553 {
3554     AVFormatContext *oc;
3555     int err, use_video, use_audio, use_subtitle;
3556     int input_has_video, input_has_audio, input_has_subtitle;
3557     AVFormatParameters params, *ap = &params;
3558     AVOutputFormat *file_oformat;
3559     AVMetadataTag *tag = NULL;
3560
3561     if (!strcmp(filename, "-"))
3562         filename = "pipe:";
3563
3564     oc = avformat_alloc_context();
3565     if (!oc) {
3566         print_error(filename, AVERROR(ENOMEM));
3567         ffmpeg_exit(1);
3568     }
3569
3570     if (last_asked_format) {
3571         file_oformat = av_guess_format(last_asked_format, NULL, NULL);
3572         if (!file_oformat) {
3573             fprintf(stderr, "Requested output format '%s' is not a suitable output format\n", last_asked_format);
3574             ffmpeg_exit(1);
3575         }
3576         last_asked_format = NULL;
3577     } else {
3578         file_oformat = av_guess_format(NULL, filename, NULL);
3579         if (!file_oformat) {
3580             fprintf(stderr, "Unable to find a suitable output format for '%s'\n",
3581                     filename);
3582             ffmpeg_exit(1);
3583         }
3584     }
3585
3586     oc->oformat = file_oformat;
3587     av_strlcpy(oc->filename, filename, sizeof(oc->filename));
3588
3589     if (!strcmp(file_oformat->name, "ffm") &&
3590         av_strstart(filename, "http:", NULL)) {
3591         /* special case for files sent to ffserver: we get the stream
3592            parameters from ffserver */
3593         int err = read_ffserver_streams(oc, filename);
3594         if (err < 0) {
3595             print_error(filename, err);
3596             ffmpeg_exit(1);
3597         }
3598     } else {
3599         use_video = file_oformat->video_codec != CODEC_ID_NONE || video_stream_copy || video_codec_name;
3600         use_audio = file_oformat->audio_codec != CODEC_ID_NONE || audio_stream_copy || audio_codec_name;
3601         use_subtitle = file_oformat->subtitle_codec != CODEC_ID_NONE || subtitle_stream_copy || subtitle_codec_name;
3602
3603         /* disable if no corresponding type found and at least one
3604            input file */
3605         if (nb_input_files > 0) {
3606             check_audio_video_sub_inputs(&input_has_video, &input_has_audio,
3607                                          &input_has_subtitle);
3608             if (!input_has_video)
3609                 use_video = 0;
3610             if (!input_has_audio)
3611                 use_audio = 0;
3612             if (!input_has_subtitle)
3613                 use_subtitle = 0;
3614         }
3615
3616         /* manual disable */
3617         if (audio_disable)    use_audio    = 0;
3618         if (video_disable)    use_video    = 0;
3619         if (subtitle_disable) use_subtitle = 0;
3620
3621         if (use_video)    new_video_stream(oc, nb_output_files);
3622         if (use_audio)    new_audio_stream(oc, nb_output_files);
3623         if (use_subtitle) new_subtitle_stream(oc, nb_output_files);
3624
3625         oc->timestamp = recording_timestamp;
3626
3627         while ((tag = av_metadata_get(metadata, "", tag, AV_METADATA_IGNORE_SUFFIX)))
3628             av_metadata_set2(&oc->metadata, tag->key, tag->value, 0);
3629         av_metadata_free(&metadata);
3630     }
3631
3632     output_files[nb_output_files++] = oc;
3633
3634     /* check filename in case of an image number is expected */
3635     if (oc->oformat->flags & AVFMT_NEEDNUMBER) {
3636         if (!av_filename_number_test(oc->filename)) {
3637             print_error(oc->filename, AVERROR_NUMEXPECTED);
3638             ffmpeg_exit(1);
3639         }
3640     }
3641
3642     if (!(oc->oformat->flags & AVFMT_NOFILE)) {
3643         /* test if it already exists to avoid loosing precious files */
3644         if (!file_overwrite &&
3645             (strchr(filename, ':') == NULL ||
3646              filename[1] == ':' ||
3647              av_strstart(filename, "file:", NULL))) {
3648             if (url_exist(filename)) {
3649                 if (!using_stdin) {
3650                     fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3651                     fflush(stderr);
3652                     if (!read_yesno()) {
3653                         fprintf(stderr, "Not overwriting - exiting\n");
3654                         ffmpeg_exit(1);
3655                     }
3656                 }
3657                 else {
3658                     fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
3659                     ffmpeg_exit(1);
3660                 }
3661             }
3662         }
3663
3664         /* open the file */
3665         if ((err = url_fopen(&oc->pb, filename, URL_WRONLY)) < 0) {
3666             print_error(filename, err);
3667             ffmpeg_exit(1);
3668         }
3669     }
3670
3671     memset(ap, 0, sizeof(*ap));
3672     if (av_set_parameters(oc, ap) < 0) {
3673         fprintf(stderr, "%s: Invalid encoding parameters\n",
3674                 oc->filename);
3675         ffmpeg_exit(1);
3676     }
3677
3678     oc->preload= (int)(mux_preload*AV_TIME_BASE);
3679     oc->max_delay= (int)(mux_max_delay*AV_TIME_BASE);
3680     oc->loop_output = loop_output;
3681     oc->flags |= AVFMT_FLAG_NONBLOCK;
3682
3683     set_context_opts(oc, avformat_opts, AV_OPT_FLAG_ENCODING_PARAM, NULL);
3684