Use AV_RL32() in opt_codec_tag().
[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/intreadwrite.h"
43 #include "libavutil/pixdesc.h"
44 #include "libavutil/avstring.h"
45 #include "libavutil/libm.h"
46 #include "libavformat/os_support.h"
47
48 #if CONFIG_AVFILTER
49 # include "libavfilter/avfilter.h"
50 # include "libavfilter/avfiltergraph.h"
51 # include "libavfilter/graphparser.h"
52 # include "libavfilter/vsrc_buffer.h"
53 #endif
54
55 #if HAVE_SYS_RESOURCE_H
56 #include <sys/types.h>
57 #include <sys/time.h>
58 #include <sys/resource.h>
59 #elif HAVE_GETPROCESSTIMES
60 #include <windows.h>
61 #endif
62 #if HAVE_GETPROCESSMEMORYINFO
63 #include <windows.h>
64 #include <psapi.h>
65 #endif
66
67 #if HAVE_SYS_SELECT_H
68 #include <sys/select.h>
69 #endif
70
71 #if HAVE_TERMIOS_H
72 #include <fcntl.h>
73 #include <sys/ioctl.h>
74 #include <sys/time.h>
75 #include <termios.h>
76 #elif HAVE_CONIO_H
77 #include <conio.h>
78 #endif
79 #include <time.h>
80
81 #include "cmdutils.h"
82
83 #include "libavutil/avassert.h"
84
85 const char program_name[] = "FFmpeg";
86 const int program_birth_year = 2000;
87
88 /* select an input stream for an output stream */
89 typedef struct AVStreamMap {
90     int file_index;
91     int stream_index;
92     int sync_file_index;
93     int sync_stream_index;
94 } AVStreamMap;
95
96 /**
97  * select an input file for an output file
98  */
99 typedef struct AVMetaDataMap {
100     int out_file;
101     int in_file;
102 } AVMetaDataMap;
103
104 static const OptionDef options[];
105
106 #define MAX_FILES 100
107 #if !FF_API_MAX_STREAMS
108 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
109 #endif
110
111 static const char *last_asked_format = NULL;
112 static AVFormatContext *input_files[MAX_FILES];
113 static int64_t input_files_ts_offset[MAX_FILES];
114 static double *input_files_ts_scale[MAX_FILES] = {NULL};
115 static AVCodec **input_codecs = NULL;
116 static int nb_input_files = 0;
117 static int nb_input_codecs = 0;
118 static int nb_input_files_ts_scale[MAX_FILES] = {0};
119
120 static AVFormatContext *output_files[MAX_FILES];
121 static AVCodec **output_codecs = NULL;
122 static int nb_output_files = 0;
123 static int nb_output_codecs = 0;
124
125 static AVStreamMap *stream_maps = NULL;
126 static int nb_stream_maps;
127
128 static AVMetaDataMap *meta_data_maps = NULL;
129 static int nb_meta_data_maps;
130
131 /* indexed by output file stream index */
132 static int *streamid_map = NULL;
133 static int nb_streamid_map = 0;
134
135 static int frame_width  = 0;
136 static int frame_height = 0;
137 static float frame_aspect_ratio = 0;
138 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
139 static enum SampleFormat audio_sample_fmt = SAMPLE_FMT_NONE;
140 static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
141 static AVRational frame_rate;
142 static float video_qscale = 0;
143 static uint16_t *intra_matrix = NULL;
144 static uint16_t *inter_matrix = NULL;
145 static const char *video_rc_override_string=NULL;
146 static int video_disable = 0;
147 static int video_discard = 0;
148 static char *video_codec_name = NULL;
149 static unsigned int video_codec_tag = 0;
150 static char *video_language = NULL;
151 static int same_quality = 0;
152 static int do_deinterlace = 0;
153 static int top_field_first = -1;
154 static int me_threshold = 0;
155 static int intra_dc_precision = 8;
156 static int loop_input = 0;
157 static int loop_output = AVFMT_NOOUTPUTLOOP;
158 static int qp_hist = 0;
159 #if CONFIG_AVFILTER
160 static char *vfilters = NULL;
161 AVFilterGraph *graph = NULL;
162 #endif
163
164 static int intra_only = 0;
165 static int audio_sample_rate = 44100;
166 static int64_t channel_layout = 0;
167 #define QSCALE_NONE -99999
168 static float audio_qscale = QSCALE_NONE;
169 static int audio_disable = 0;
170 static int audio_channels = 1;
171 static char  *audio_codec_name = NULL;
172 static unsigned int audio_codec_tag = 0;
173 static char *audio_language = NULL;
174
175 static int subtitle_disable = 0;
176 static char *subtitle_codec_name = NULL;
177 static char *subtitle_language = NULL;
178 static unsigned int subtitle_codec_tag = 0;
179
180 static float mux_preload= 0.5;
181 static float mux_max_delay= 0.7;
182
183 static int64_t recording_time = INT64_MAX;
184 static int64_t start_time = 0;
185 static int64_t recording_timestamp = 0;
186 static int64_t input_ts_offset = 0;
187 static int file_overwrite = 0;
188 static AVMetadata *metadata;
189 static int do_benchmark = 0;
190 static int do_hex_dump = 0;
191 static int do_pkt_dump = 0;
192 static int do_psnr = 0;
193 static int do_pass = 0;
194 static char *pass_logfilename_prefix = NULL;
195 static int audio_stream_copy = 0;
196 static int video_stream_copy = 0;
197 static int subtitle_stream_copy = 0;
198 static int video_sync_method= -1;
199 static int audio_sync_method= 0;
200 static float audio_drift_threshold= 0.1;
201 static int copy_ts= 0;
202 static int opt_shortest = 0;
203 static int video_global_header = 0;
204 static char *vstats_filename;
205 static FILE *vstats_file;
206 static int opt_programid = 0;
207 static int copy_initial_nonkeyframes = 0;
208
209 static int rate_emu = 0;
210
211 static int  video_channel = 0;
212 static char *video_standard;
213
214 static int audio_volume = 256;
215
216 static int exit_on_error = 0;
217 static int using_stdin = 0;
218 static int verbose = 1;
219 static int thread_count= 1;
220 static int q_pressed = 0;
221 static int64_t video_size = 0;
222 static int64_t audio_size = 0;
223 static int64_t extra_size = 0;
224 static int nb_frames_dup = 0;
225 static int nb_frames_drop = 0;
226 static int input_sync;
227 static uint64_t limit_filesize = 0;
228 static int force_fps = 0;
229 static char *forced_key_frames = NULL;
230
231 static int pgmyuv_compatibility_hack=0;
232 static float dts_delta_threshold = 10;
233
234 static unsigned int sws_flags = SWS_BICUBIC;
235
236 static int64_t timer_start;
237
238 static uint8_t *audio_buf;
239 static uint8_t *audio_out;
240 unsigned int allocated_audio_out_size, allocated_audio_buf_size;
241
242 static short *samples;
243
244 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
245 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
246 static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL;
247
248 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
249
250 struct AVInputStream;
251
252 typedef struct AVOutputStream {
253     int file_index;          /* file index */
254     int index;               /* stream index in the output file */
255     int source_index;        /* AVInputStream index */
256     AVStream *st;            /* stream in the output file */
257     int encoding_needed;     /* true if encoding needed for this stream */
258     int frame_number;
259     /* input pts and corresponding output pts
260        for A/V sync */
261     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
262     struct AVInputStream *sync_ist; /* input stream to sync against */
263     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
264     AVBitStreamFilterContext *bitstream_filters;
265     /* video only */
266     int video_resample;
267     AVFrame pict_tmp;      /* temporary image for resampling */
268     struct SwsContext *img_resample_ctx; /* for image resampling */
269     int resample_height;
270     int resample_width;
271     int resample_pix_fmt;
272
273     /* full frame size of first frame */
274     int original_height;
275     int original_width;
276
277     /* forced key frames */
278     int64_t *forced_kf_pts;
279     int forced_kf_count;
280     int forced_kf_index;
281
282     /* audio only */
283     int audio_resample;
284     ReSampleContext *resample; /* for audio resampling */
285     int reformat_pair;
286     AVAudioConvert *reformat_ctx;
287     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
288     FILE *logfile;
289 } AVOutputStream;
290
291 static AVOutputStream **output_streams_for_file[MAX_FILES] = { NULL };
292 static int nb_output_streams_for_file[MAX_FILES] = { 0 };
293
294 typedef struct AVInputStream {
295     int file_index;
296     int index;
297     AVStream *st;
298     int discard;             /* true if stream data should be discarded */
299     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
300     int64_t sample_index;      /* current sample */
301
302     int64_t       start;     /* time when read started */
303     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
304                                 is not defined */
305     int64_t       pts;       /* current pts */
306     PtsCorrectionContext pts_ctx;
307     int is_start;            /* is 1 at the start and after a discontinuity */
308     int showed_multi_packet_warning;
309     int is_past_recording_time;
310 #if CONFIG_AVFILTER
311     AVFilterContext *output_video_filter;
312     AVFilterContext *input_video_filter;
313     AVFrame *filter_frame;
314     int has_filter_frame;
315     AVFilterBufferRef *picref;
316 #endif
317 } AVInputStream;
318
319 typedef struct AVInputFile {
320     int eof_reached;      /* true if eof reached */
321     int ist_index;        /* index of first stream in ist_table */
322     int buffer_size;      /* current total buffer size */
323     int nb_streams;       /* nb streams we are aware of */
324 } AVInputFile;
325
326 #if HAVE_TERMIOS_H
327
328 /* init terminal so that we can grab keys */
329 static struct termios oldtty;
330 #endif
331
332 #if CONFIG_AVFILTER
333
334 static int configure_filters(AVInputStream *ist, AVOutputStream *ost)
335 {
336     AVFilterContext *last_filter, *filter;
337     /** filter graph containing all filters including input & output */
338     AVCodecContext *codec = ost->st->codec;
339     AVCodecContext *icodec = ist->st->codec;
340     FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
341     char args[255];
342     int ret;
343
344     graph = av_mallocz(sizeof(AVFilterGraph));
345
346     if ((ret = avfilter_open(&ist->input_video_filter, avfilter_get_by_name("buffer"), "src")) < 0)
347         return ret;
348     if ((ret = avfilter_open(&ist->output_video_filter, &ffsink, "out")) < 0)
349         return ret;
350
351     snprintf(args, 255, "%d:%d:%d:%d:%d", ist->st->codec->width,
352              ist->st->codec->height, ist->st->codec->pix_fmt,
353              ist->st->time_base.num, ist->st->time_base.den);
354     if ((ret = avfilter_init_filter(ist->input_video_filter, args, NULL)) < 0)
355         return ret;
356     if ((ret = avfilter_init_filter(ist->output_video_filter, NULL, &ffsink_ctx)) < 0)
357         return ret;
358
359     /* add input and output filters to the overall graph */
360     avfilter_graph_add_filter(graph, ist->input_video_filter);
361     avfilter_graph_add_filter(graph, ist->output_video_filter);
362
363     last_filter = ist->input_video_filter;
364
365     if (codec->width  != icodec->width || codec->height != icodec->height) {
366         snprintf(args, 255, "%d:%d:flags=0x%X",
367                  codec->width,
368                  codec->height,
369                  (int)av_get_int(sws_opts, "sws_flags", NULL));
370         if ((ret = avfilter_open(&filter, avfilter_get_by_name("scale"), NULL)) < 0)
371             return ret;
372         if ((ret = avfilter_init_filter(filter, args, NULL)) < 0)
373             return ret;
374         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
375             return ret;
376         last_filter = filter;
377         avfilter_graph_add_filter(graph, last_filter);
378     }
379
380     snprintf(args, sizeof(args), "flags=0x%X", (int)av_get_int(sws_opts, "sws_flags", NULL));
381     graph->scale_sws_opts = av_strdup(args);
382
383     if (vfilters) {
384         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
385         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
386
387         outputs->name    = av_strdup("in");
388         outputs->filter  = last_filter;
389         outputs->pad_idx = 0;
390         outputs->next    = NULL;
391
392         inputs->name    = av_strdup("out");
393         inputs->filter  = ist->output_video_filter;
394         inputs->pad_idx = 0;
395         inputs->next    = NULL;
396
397         if ((ret = avfilter_graph_parse(graph, vfilters, inputs, outputs, NULL)) < 0)
398             return ret;
399         av_freep(&vfilters);
400     } else {
401         if ((ret = avfilter_link(last_filter, 0, ist->output_video_filter, 0)) < 0)
402             return ret;
403     }
404
405     if ((ret = avfilter_graph_config(graph, NULL)) < 0)
406         return ret;
407
408     codec->width  = ist->output_video_filter->inputs[0]->w;
409     codec->height = ist->output_video_filter->inputs[0]->h;
410
411     return 0;
412 }
413 #endif /* CONFIG_AVFILTER */
414
415 static void term_exit(void)
416 {
417     av_log(NULL, AV_LOG_QUIET, "");
418 #if HAVE_TERMIOS_H
419     tcsetattr (0, TCSANOW, &oldtty);
420 #endif
421 }
422
423 static volatile int received_sigterm = 0;
424
425 static void
426 sigterm_handler(int sig)
427 {
428     received_sigterm = sig;
429     term_exit();
430 }
431
432 static void term_init(void)
433 {
434 #if HAVE_TERMIOS_H
435     struct termios tty;
436
437     tcgetattr (0, &tty);
438     oldtty = tty;
439     atexit(term_exit);
440
441     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
442                           |INLCR|IGNCR|ICRNL|IXON);
443     tty.c_oflag |= OPOST;
444     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
445     tty.c_cflag &= ~(CSIZE|PARENB);
446     tty.c_cflag |= CS8;
447     tty.c_cc[VMIN] = 1;
448     tty.c_cc[VTIME] = 0;
449
450     tcsetattr (0, TCSANOW, &tty);
451     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
452 #endif
453
454     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
455     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
456 #ifdef SIGXCPU
457     signal(SIGXCPU, sigterm_handler);
458 #endif
459 }
460
461 /* read a key without blocking */
462 static int read_key(void)
463 {
464 #if HAVE_TERMIOS_H
465     int n = 1;
466     unsigned char ch;
467     struct timeval tv;
468     fd_set rfds;
469
470     FD_ZERO(&rfds);
471     FD_SET(0, &rfds);
472     tv.tv_sec = 0;
473     tv.tv_usec = 0;
474     n = select(1, &rfds, NULL, NULL, &tv);
475     if (n > 0) {
476         n = read(0, &ch, 1);
477         if (n == 1)
478             return ch;
479
480         return n;
481     }
482 #elif HAVE_CONIO_H
483     if(kbhit())
484         return(getch());
485 #endif
486     return -1;
487 }
488
489 static int decode_interrupt_cb(void)
490 {
491     return q_pressed || (q_pressed = read_key() == 'q');
492 }
493
494 static int ffmpeg_exit(int ret)
495 {
496     int i;
497
498     /* close files */
499     for(i=0;i<nb_output_files;i++) {
500         /* maybe av_close_output_file ??? */
501         AVFormatContext *s = output_files[i];
502         int j;
503         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
504             url_fclose(s->pb);
505         for(j=0;j<s->nb_streams;j++) {
506             av_metadata_free(&s->streams[j]->metadata);
507             av_free(s->streams[j]->codec);
508             av_free(s->streams[j]->info);
509             av_free(s->streams[j]);
510         }
511         for(j=0;j<s->nb_programs;j++) {
512             av_metadata_free(&s->programs[j]->metadata);
513         }
514         for(j=0;j<s->nb_chapters;j++) {
515             av_metadata_free(&s->chapters[j]->metadata);
516         }
517         av_metadata_free(&s->metadata);
518         av_free(s);
519         av_free(output_streams_for_file[i]);
520     }
521     for(i=0;i<nb_input_files;i++) {
522         av_close_input_file(input_files[i]);
523         av_free(input_files_ts_scale[i]);
524     }
525
526     av_free(intra_matrix);
527     av_free(inter_matrix);
528
529     if (vstats_file)
530         fclose(vstats_file);
531     av_free(vstats_filename);
532
533     av_free(opt_names);
534     av_free(streamid_map);
535     av_free(input_codecs);
536     av_free(output_codecs);
537     av_free(stream_maps);
538     av_free(meta_data_maps);
539
540     av_free(video_codec_name);
541     av_free(audio_codec_name);
542     av_free(subtitle_codec_name);
543
544     av_free(video_standard);
545
546     uninit_opts();
547     av_free(audio_buf);
548     av_free(audio_out);
549     allocated_audio_buf_size= allocated_audio_out_size= 0;
550     av_free(samples);
551
552 #if CONFIG_AVFILTER
553     avfilter_uninit();
554 #endif
555
556     if (received_sigterm) {
557         fprintf(stderr,
558             "Received signal %d: terminating.\n",
559             (int) received_sigterm);
560         exit (255);
561     }
562
563     exit(ret); /* not all OS-es handle main() return value */
564     return ret;
565 }
566
567 /* similar to ff_dynarray_add() and av_fast_realloc() */
568 static void *grow_array(void *array, int elem_size, int *size, int new_size)
569 {
570     if (new_size >= INT_MAX / elem_size) {
571         fprintf(stderr, "Array too big.\n");
572         ffmpeg_exit(1);
573     }
574     if (*size < new_size) {
575         uint8_t *tmp = av_realloc(array, new_size*elem_size);
576         if (!tmp) {
577             fprintf(stderr, "Could not alloc buffer.\n");
578             ffmpeg_exit(1);
579         }
580         memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
581         *size = new_size;
582         return tmp;
583     }
584     return array;
585 }
586
587 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
588 {
589     if(codec && codec->sample_fmts){
590         const enum SampleFormat *p= codec->sample_fmts;
591         for(; *p!=-1; p++){
592             if(*p == st->codec->sample_fmt)
593                 break;
594         }
595         if(*p == -1)
596             st->codec->sample_fmt = codec->sample_fmts[0];
597     }
598 }
599
600 static void choose_sample_rate(AVStream *st, AVCodec *codec)
601 {
602     if(codec && codec->supported_samplerates){
603         const int *p= codec->supported_samplerates;
604         int best=0;
605         int best_dist=INT_MAX;
606         for(; *p; p++){
607             int dist= abs(st->codec->sample_rate - *p);
608             if(dist < best_dist){
609                 best_dist= dist;
610                 best= *p;
611             }
612         }
613         if(best_dist){
614             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
615         }
616         st->codec->sample_rate= best;
617     }
618 }
619
620 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
621 {
622     if(codec && codec->pix_fmts){
623         const enum PixelFormat *p= codec->pix_fmts;
624         for(; *p!=-1; p++){
625             if(*p == st->codec->pix_fmt)
626                 break;
627         }
628         if(*p == -1
629            && !(   st->codec->codec_id==CODEC_ID_MJPEG
630                 && st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL
631                 && (   st->codec->pix_fmt == PIX_FMT_YUV420P
632                     || st->codec->pix_fmt == PIX_FMT_YUV422P)))
633             st->codec->pix_fmt = codec->pix_fmts[0];
634     }
635 }
636
637 static AVOutputStream *new_output_stream(AVFormatContext *oc, int file_idx)
638 {
639     int idx = oc->nb_streams - 1;
640     AVOutputStream *ost;
641
642     output_streams_for_file[file_idx] =
643         grow_array(output_streams_for_file[file_idx],
644                    sizeof(*output_streams_for_file[file_idx]),
645                    &nb_output_streams_for_file[file_idx],
646                    oc->nb_streams);
647     ost = output_streams_for_file[file_idx][idx] =
648         av_mallocz(sizeof(AVOutputStream));
649     if (!ost) {
650         fprintf(stderr, "Could not alloc output stream\n");
651         ffmpeg_exit(1);
652     }
653     ost->file_index = file_idx;
654     ost->index = idx;
655     return ost;
656 }
657
658 static int read_ffserver_streams(AVFormatContext *s, const char *filename)
659 {
660     int i, err;
661     AVFormatContext *ic;
662     int nopts = 0;
663
664     err = av_open_input_file(&ic, filename, NULL, FFM_PACKET_SIZE, NULL);
665     if (err < 0)
666         return err;
667     /* copy stream format */
668     s->nb_streams = 0;
669     for(i=0;i<ic->nb_streams;i++) {
670         AVStream *st;
671         AVCodec *codec;
672
673         s->nb_streams++;
674
675         // FIXME: a more elegant solution is needed
676         st = av_mallocz(sizeof(AVStream));
677         memcpy(st, ic->streams[i], sizeof(AVStream));
678         st->codec = avcodec_alloc_context();
679         if (!st->codec) {
680             print_error(filename, AVERROR(ENOMEM));
681             ffmpeg_exit(1);
682         }
683         avcodec_copy_context(st->codec, ic->streams[i]->codec);
684         s->streams[i] = st;
685
686         codec = avcodec_find_encoder(st->codec->codec_id);
687         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
688             if (audio_stream_copy) {
689                 st->stream_copy = 1;
690             } else
691                 choose_sample_fmt(st, codec);
692         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
693             if (video_stream_copy) {
694                 st->stream_copy = 1;
695             } else
696                 choose_pixel_fmt(st, codec);
697         }
698
699         if(!st->codec->thread_count)
700             st->codec->thread_count = 1;
701         if(st->codec->thread_count>1)
702             avcodec_thread_init(st->codec, st->codec->thread_count);
703
704         if(st->codec->flags & CODEC_FLAG_BITEXACT)
705             nopts = 1;
706
707         new_output_stream(s, nb_output_files);
708     }
709
710     if (!nopts)
711         s->timestamp = av_gettime();
712
713     av_close_input_file(ic);
714     return 0;
715 }
716
717 static double
718 get_sync_ipts(const AVOutputStream *ost)
719 {
720     const AVInputStream *ist = ost->sync_ist;
721     return (double)(ist->pts - start_time)/AV_TIME_BASE;
722 }
723
724 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
725     int ret;
726
727     while(bsfc){
728         AVPacket new_pkt= *pkt;
729         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
730                                           &new_pkt.data, &new_pkt.size,
731                                           pkt->data, pkt->size,
732                                           pkt->flags & AV_PKT_FLAG_KEY);
733         if(a>0){
734             av_free_packet(pkt);
735             new_pkt.destruct= av_destruct_packet;
736         } else if(a<0){
737             fprintf(stderr, "%s failed for stream %d, codec %s",
738                     bsfc->filter->name, pkt->stream_index,
739                     avctx->codec ? avctx->codec->name : "copy");
740             print_error("", a);
741             if (exit_on_error)
742                 ffmpeg_exit(1);
743         }
744         *pkt= new_pkt;
745
746         bsfc= bsfc->next;
747     }
748
749     ret= av_interleaved_write_frame(s, pkt);
750     if(ret < 0){
751         print_error("av_interleaved_write_frame()", ret);
752         ffmpeg_exit(1);
753     }
754 }
755
756 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
757
758 static void do_audio_out(AVFormatContext *s,
759                          AVOutputStream *ost,
760                          AVInputStream *ist,
761                          unsigned char *buf, int size)
762 {
763     uint8_t *buftmp;
764     int64_t audio_out_size, audio_buf_size;
765     int64_t allocated_for_size= size;
766
767     int size_out, frame_bytes, ret;
768     AVCodecContext *enc= ost->st->codec;
769     AVCodecContext *dec= ist->st->codec;
770     int osize= av_get_bits_per_sample_format(enc->sample_fmt)/8;
771     int isize= av_get_bits_per_sample_format(dec->sample_fmt)/8;
772     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
773
774 need_realloc:
775     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
776     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
777     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
778     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
779     audio_buf_size*= osize*enc->channels;
780
781     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
782     if(coded_bps > 8*osize)
783         audio_out_size= audio_out_size * coded_bps / (8*osize);
784     audio_out_size += FF_MIN_BUFFER_SIZE;
785
786     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
787         fprintf(stderr, "Buffer sizes too large\n");
788         ffmpeg_exit(1);
789     }
790
791     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
792     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
793     if (!audio_buf || !audio_out){
794         fprintf(stderr, "Out of memory in do_audio_out\n");
795         ffmpeg_exit(1);
796     }
797
798     if (enc->channels != dec->channels)
799         ost->audio_resample = 1;
800
801     if (ost->audio_resample && !ost->resample) {
802         if (dec->sample_fmt != SAMPLE_FMT_S16)
803             fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
804         ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
805                                                enc->sample_rate, dec->sample_rate,
806                                                enc->sample_fmt,  dec->sample_fmt,
807                                                16, 10, 0, 0.8);
808         if (!ost->resample) {
809             fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
810                     dec->channels, dec->sample_rate,
811                     enc->channels, enc->sample_rate);
812             ffmpeg_exit(1);
813         }
814     }
815
816 #define MAKE_SFMT_PAIR(a,b) ((a)+SAMPLE_FMT_NB*(b))
817     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
818         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
819         if (ost->reformat_ctx)
820             av_audio_convert_free(ost->reformat_ctx);
821         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
822                                                    dec->sample_fmt, 1, NULL, 0);
823         if (!ost->reformat_ctx) {
824             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
825                 avcodec_get_sample_fmt_name(dec->sample_fmt),
826                 avcodec_get_sample_fmt_name(enc->sample_fmt));
827             ffmpeg_exit(1);
828         }
829         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
830     }
831
832     if(audio_sync_method){
833         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
834                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
835         double idelta= delta*dec->sample_rate / enc->sample_rate;
836         int byte_delta= ((int)idelta)*2*dec->channels;
837
838         //FIXME resample delay
839         if(fabs(delta) > 50){
840             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
841                 if(byte_delta < 0){
842                     byte_delta= FFMAX(byte_delta, -size);
843                     size += byte_delta;
844                     buf  -= byte_delta;
845                     if(verbose > 2)
846                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
847                     if(!size)
848                         return;
849                     ist->is_start=0;
850                 }else{
851                     static uint8_t *input_tmp= NULL;
852                     input_tmp= av_realloc(input_tmp, byte_delta + size);
853
854                     if(byte_delta > allocated_for_size - size){
855                         allocated_for_size= byte_delta + (int64_t)size;
856                         goto need_realloc;
857                     }
858                     ist->is_start=0;
859
860                     memset(input_tmp, 0, byte_delta);
861                     memcpy(input_tmp + byte_delta, buf, size);
862                     buf= input_tmp;
863                     size += byte_delta;
864                     if(verbose > 2)
865                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
866                 }
867             }else if(audio_sync_method>1){
868                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
869                 av_assert0(ost->audio_resample);
870                 if(verbose > 2)
871                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
872 //                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));
873                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
874             }
875         }
876     }else
877         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
878                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
879
880     if (ost->audio_resample) {
881         buftmp = audio_buf;
882         size_out = audio_resample(ost->resample,
883                                   (short *)buftmp, (short *)buf,
884                                   size / (dec->channels * isize));
885         size_out = size_out * enc->channels * osize;
886     } else {
887         buftmp = buf;
888         size_out = size;
889     }
890
891     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
892         const void *ibuf[6]= {buftmp};
893         void *obuf[6]= {audio_buf};
894         int istride[6]= {isize};
895         int ostride[6]= {osize};
896         int len= size_out/istride[0];
897         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
898             printf("av_audio_convert() failed\n");
899             if (exit_on_error)
900                 ffmpeg_exit(1);
901             return;
902         }
903         buftmp = audio_buf;
904         size_out = len*osize;
905     }
906
907     /* now encode as many frames as possible */
908     if (enc->frame_size > 1) {
909         /* output resampled raw samples */
910         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
911             fprintf(stderr, "av_fifo_realloc2() failed\n");
912             ffmpeg_exit(1);
913         }
914         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
915
916         frame_bytes = enc->frame_size * osize * enc->channels;
917
918         while (av_fifo_size(ost->fifo) >= frame_bytes) {
919             AVPacket pkt;
920             av_init_packet(&pkt);
921
922             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
923
924             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
925
926             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
927                                        (short *)audio_buf);
928             if (ret < 0) {
929                 fprintf(stderr, "Audio encoding failed\n");
930                 ffmpeg_exit(1);
931             }
932             audio_size += ret;
933             pkt.stream_index= ost->index;
934             pkt.data= audio_out;
935             pkt.size= ret;
936             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
937                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
938             pkt.flags |= AV_PKT_FLAG_KEY;
939             write_frame(s, &pkt, enc, ost->bitstream_filters);
940
941             ost->sync_opts += enc->frame_size;
942         }
943     } else {
944         AVPacket pkt;
945         av_init_packet(&pkt);
946
947         ost->sync_opts += size_out / (osize * enc->channels);
948
949         /* output a pcm frame */
950         /* determine the size of the coded buffer */
951         size_out /= osize;
952         if (coded_bps)
953             size_out = size_out*coded_bps/8;
954
955         if(size_out > audio_out_size){
956             fprintf(stderr, "Internal error, buffer size too small\n");
957             ffmpeg_exit(1);
958         }
959
960         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
961         ret = avcodec_encode_audio(enc, audio_out, size_out,
962                                    (short *)buftmp);
963         if (ret < 0) {
964             fprintf(stderr, "Audio encoding failed\n");
965             ffmpeg_exit(1);
966         }
967         audio_size += ret;
968         pkt.stream_index= ost->index;
969         pkt.data= audio_out;
970         pkt.size= ret;
971         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
972             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
973         pkt.flags |= AV_PKT_FLAG_KEY;
974         write_frame(s, &pkt, enc, ost->bitstream_filters);
975     }
976 }
977
978 static void pre_process_video_frame(AVInputStream *ist, AVPicture *picture, void **bufp)
979 {
980     AVCodecContext *dec;
981     AVPicture *picture2;
982     AVPicture picture_tmp;
983     uint8_t *buf = 0;
984
985     dec = ist->st->codec;
986
987     /* deinterlace : must be done before any resize */
988     if (do_deinterlace) {
989         int size;
990
991         /* create temporary picture */
992         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
993         buf = av_malloc(size);
994         if (!buf)
995             return;
996
997         picture2 = &picture_tmp;
998         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
999
1000         if(avpicture_deinterlace(picture2, picture,
1001                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1002             /* if error, do not deinterlace */
1003             fprintf(stderr, "Deinterlacing failed\n");
1004             av_free(buf);
1005             buf = NULL;
1006             picture2 = picture;
1007         }
1008     } else {
1009         picture2 = picture;
1010     }
1011
1012     if (picture != picture2)
1013         *picture = *picture2;
1014     *bufp = buf;
1015 }
1016
1017 /* we begin to correct av delay at this threshold */
1018 #define AV_DELAY_MAX 0.100
1019
1020 static void do_subtitle_out(AVFormatContext *s,
1021                             AVOutputStream *ost,
1022                             AVInputStream *ist,
1023                             AVSubtitle *sub,
1024                             int64_t pts)
1025 {
1026     static uint8_t *subtitle_out = NULL;
1027     int subtitle_out_max_size = 1024 * 1024;
1028     int subtitle_out_size, nb, i;
1029     AVCodecContext *enc;
1030     AVPacket pkt;
1031
1032     if (pts == AV_NOPTS_VALUE) {
1033         fprintf(stderr, "Subtitle packets must have a pts\n");
1034         if (exit_on_error)
1035             ffmpeg_exit(1);
1036         return;
1037     }
1038
1039     enc = ost->st->codec;
1040
1041     if (!subtitle_out) {
1042         subtitle_out = av_malloc(subtitle_out_max_size);
1043     }
1044
1045     /* Note: DVB subtitle need one packet to draw them and one other
1046        packet to clear them */
1047     /* XXX: signal it in the codec context ? */
1048     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1049         nb = 2;
1050     else
1051         nb = 1;
1052
1053     for(i = 0; i < nb; i++) {
1054         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1055         // start_display_time is required to be 0
1056         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1057         sub->end_display_time -= sub->start_display_time;
1058         sub->start_display_time = 0;
1059         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1060                                                     subtitle_out_max_size, sub);
1061         if (subtitle_out_size < 0) {
1062             fprintf(stderr, "Subtitle encoding failed\n");
1063             ffmpeg_exit(1);
1064         }
1065
1066         av_init_packet(&pkt);
1067         pkt.stream_index = ost->index;
1068         pkt.data = subtitle_out;
1069         pkt.size = subtitle_out_size;
1070         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1071         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1072             /* XXX: the pts correction is handled here. Maybe handling
1073                it in the codec would be better */
1074             if (i == 0)
1075                 pkt.pts += 90 * sub->start_display_time;
1076             else
1077                 pkt.pts += 90 * sub->end_display_time;
1078         }
1079         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1080     }
1081 }
1082
1083 static int bit_buffer_size= 1024*256;
1084 static uint8_t *bit_buffer= NULL;
1085
1086 static void do_video_out(AVFormatContext *s,
1087                          AVOutputStream *ost,
1088                          AVInputStream *ist,
1089                          AVFrame *in_picture,
1090                          int *frame_size)
1091 {
1092     int nb_frames, i, ret;
1093     AVFrame *final_picture, *formatted_picture, *resampling_dst, *padding_src;
1094     AVCodecContext *enc, *dec;
1095     double sync_ipts;
1096
1097     enc = ost->st->codec;
1098     dec = ist->st->codec;
1099
1100     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1101
1102     /* by default, we output a single frame */
1103     nb_frames = 1;
1104
1105     *frame_size = 0;
1106
1107     if(video_sync_method){
1108         double vdelta = sync_ipts - ost->sync_opts;
1109         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1110         if (vdelta < -1.1)
1111             nb_frames = 0;
1112         else if (video_sync_method == 2 || (video_sync_method<0 && (s->oformat->flags & AVFMT_VARIABLE_FPS))){
1113             if(vdelta<=-0.6){
1114                 nb_frames=0;
1115             }else if(vdelta>0.6)
1116             ost->sync_opts= lrintf(sync_ipts);
1117         }else if (vdelta > 1.1)
1118             nb_frames = lrintf(vdelta);
1119 //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);
1120         if (nb_frames == 0){
1121             ++nb_frames_drop;
1122             if (verbose>2)
1123                 fprintf(stderr, "*** drop!\n");
1124         }else if (nb_frames > 1) {
1125             nb_frames_dup += nb_frames - 1;
1126             if (verbose>2)
1127                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1128         }
1129     }else
1130         ost->sync_opts= lrintf(sync_ipts);
1131
1132     nb_frames= FFMIN(nb_frames, max_frames[AVMEDIA_TYPE_VIDEO] - ost->frame_number);
1133     if (nb_frames <= 0)
1134         return;
1135
1136     formatted_picture = in_picture;
1137     final_picture = formatted_picture;
1138     padding_src = formatted_picture;
1139     resampling_dst = &ost->pict_tmp;
1140
1141     if (   ost->resample_height != ist->st->codec->height
1142         || ost->resample_width  != ist->st->codec->width
1143         || (ost->resample_pix_fmt!= ist->st->codec->pix_fmt) ) {
1144
1145         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));
1146         if(!ost->video_resample)
1147             ffmpeg_exit(1);
1148     }
1149
1150 #if !CONFIG_AVFILTER
1151     if (ost->video_resample) {
1152         padding_src = NULL;
1153         final_picture = &ost->pict_tmp;
1154         if(  ost->resample_height != ist->st->codec->height
1155           || ost->resample_width  != ist->st->codec->width
1156           || (ost->resample_pix_fmt!= ist->st->codec->pix_fmt) ) {
1157
1158             /* initialize a new scaler context */
1159             sws_freeContext(ost->img_resample_ctx);
1160             sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
1161             ost->img_resample_ctx = sws_getContext(
1162                 ist->st->codec->width,
1163                 ist->st->codec->height,
1164                 ist->st->codec->pix_fmt,
1165                 ost->st->codec->width,
1166                 ost->st->codec->height,
1167                 ost->st->codec->pix_fmt,
1168                 sws_flags, NULL, NULL, NULL);
1169             if (ost->img_resample_ctx == NULL) {
1170                 fprintf(stderr, "Cannot get resampling context\n");
1171                 ffmpeg_exit(1);
1172             }
1173         }
1174         sws_scale(ost->img_resample_ctx, formatted_picture->data, formatted_picture->linesize,
1175               0, ost->resample_height, resampling_dst->data, resampling_dst->linesize);
1176     }
1177 #endif
1178
1179     /* duplicates frame if needed */
1180     for(i=0;i<nb_frames;i++) {
1181         AVPacket pkt;
1182         av_init_packet(&pkt);
1183         pkt.stream_index= ost->index;
1184
1185         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1186             /* raw pictures are written as AVPicture structure to
1187                avoid any copies. We support temorarily the older
1188                method. */
1189             AVFrame* old_frame = enc->coded_frame;
1190             enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
1191             pkt.data= (uint8_t *)final_picture;
1192             pkt.size=  sizeof(AVPicture);
1193             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1194             pkt.flags |= AV_PKT_FLAG_KEY;
1195
1196             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1197             enc->coded_frame = old_frame;
1198         } else {
1199             AVFrame big_picture;
1200
1201             big_picture= *final_picture;
1202             /* better than nothing: use input picture interlaced
1203                settings */
1204             big_picture.interlaced_frame = in_picture->interlaced_frame;
1205             if(avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)){
1206                 if(top_field_first == -1)
1207                     big_picture.top_field_first = in_picture->top_field_first;
1208                 else
1209                     big_picture.top_field_first = top_field_first;
1210             }
1211
1212             /* handles sameq here. This is not correct because it may
1213                not be a global option */
1214             big_picture.quality = same_quality ? ist->st->quality : ost->st->quality;
1215             if(!me_threshold)
1216                 big_picture.pict_type = 0;
1217 //            big_picture.pts = AV_NOPTS_VALUE;
1218             big_picture.pts= ost->sync_opts;
1219 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1220 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1221             if (ost->forced_kf_index < ost->forced_kf_count &&
1222                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1223                 big_picture.pict_type = FF_I_TYPE;
1224                 ost->forced_kf_index++;
1225             }
1226             ret = avcodec_encode_video(enc,
1227                                        bit_buffer, bit_buffer_size,
1228                                        &big_picture);
1229             if (ret < 0) {
1230                 fprintf(stderr, "Video encoding failed\n");
1231                 ffmpeg_exit(1);
1232             }
1233
1234             if(ret>0){
1235                 pkt.data= bit_buffer;
1236                 pkt.size= ret;
1237                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1238                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1239 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1240    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1241    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1242
1243                 if(enc->coded_frame->key_frame)
1244                     pkt.flags |= AV_PKT_FLAG_KEY;
1245                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1246                 *frame_size = ret;
1247                 video_size += ret;
1248                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1249                 //        enc->frame_number-1, ret, enc->pict_type);
1250                 /* if two pass, output log */
1251                 if (ost->logfile && enc->stats_out) {
1252                     fprintf(ost->logfile, "%s", enc->stats_out);
1253                 }
1254             }
1255         }
1256         ost->sync_opts++;
1257         ost->frame_number++;
1258     }
1259 }
1260
1261 static double psnr(double d){
1262     return -10.0*log(d)/log(10.0);
1263 }
1264
1265 static void do_video_stats(AVFormatContext *os, AVOutputStream *ost,
1266                            int frame_size)
1267 {
1268     AVCodecContext *enc;
1269     int frame_number;
1270     double ti1, bitrate, avg_bitrate;
1271
1272     /* this is executed just the first time do_video_stats is called */
1273     if (!vstats_file) {
1274         vstats_file = fopen(vstats_filename, "w");
1275         if (!vstats_file) {
1276             perror("fopen");
1277             ffmpeg_exit(1);
1278         }
1279     }
1280
1281     enc = ost->st->codec;
1282     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1283         frame_number = ost->frame_number;
1284         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1285         if (enc->flags&CODEC_FLAG_PSNR)
1286             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1287
1288         fprintf(vstats_file,"f_size= %6d ", frame_size);
1289         /* compute pts value */
1290         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1291         if (ti1 < 0.01)
1292             ti1 = 0.01;
1293
1294         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1295         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1296         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1297             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1298         fprintf(vstats_file,"type= %c\n", av_get_pict_type_char(enc->coded_frame->pict_type));
1299     }
1300 }
1301
1302 static void print_report(AVFormatContext **output_files,
1303                          AVOutputStream **ost_table, int nb_ostreams,
1304                          int is_last_report)
1305 {
1306     char buf[1024];
1307     AVOutputStream *ost;
1308     AVFormatContext *oc;
1309     int64_t total_size;
1310     AVCodecContext *enc;
1311     int frame_number, vid, i;
1312     double bitrate, ti1, pts;
1313     static int64_t last_time = -1;
1314     static int qp_histogram[52];
1315
1316     if (!is_last_report) {
1317         int64_t cur_time;
1318         /* display the report every 0.5 seconds */
1319         cur_time = av_gettime();
1320         if (last_time == -1) {
1321             last_time = cur_time;
1322             return;
1323         }
1324         if ((cur_time - last_time) < 500000)
1325             return;
1326         last_time = cur_time;
1327     }
1328
1329
1330     oc = output_files[0];
1331
1332     total_size = url_fsize(oc->pb);
1333     if(total_size<0) // FIXME improve url_fsize() so it works with non seekable output too
1334         total_size= url_ftell(oc->pb);
1335
1336     buf[0] = '\0';
1337     ti1 = 1e10;
1338     vid = 0;
1339     for(i=0;i<nb_ostreams;i++) {
1340         ost = ost_table[i];
1341         enc = ost->st->codec;
1342         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1343             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ",
1344                      !ost->st->stream_copy ?
1345                      enc->coded_frame->quality/(float)FF_QP2LAMBDA : -1);
1346         }
1347         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1348             float t = (av_gettime()-timer_start) / 1000000.0;
1349
1350             frame_number = ost->frame_number;
1351             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1352                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0,
1353                      !ost->st->stream_copy ?
1354                      enc->coded_frame->quality/(float)FF_QP2LAMBDA : -1);
1355             if(is_last_report)
1356                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1357             if(qp_hist){
1358                 int j;
1359                 int qp= lrintf(enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1360                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1361                     qp_histogram[qp]++;
1362                 for(j=0; j<32; j++)
1363                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1364             }
1365             if (enc->flags&CODEC_FLAG_PSNR){
1366                 int j;
1367                 double error, error_sum=0;
1368                 double scale, scale_sum=0;
1369                 char type[3]= {'Y','U','V'};
1370                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1371                 for(j=0; j<3; j++){
1372                     if(is_last_report){
1373                         error= enc->error[j];
1374                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1375                     }else{
1376                         error= enc->coded_frame->error[j];
1377                         scale= enc->width*enc->height*255.0*255.0;
1378                     }
1379                     if(j) scale/=4;
1380                     error_sum += error;
1381                     scale_sum += scale;
1382                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1383                 }
1384                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1385             }
1386             vid = 1;
1387         }
1388         /* compute min output value */
1389         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1390         if ((pts < ti1) && (pts > 0))
1391             ti1 = pts;
1392     }
1393     if (ti1 < 0.01)
1394         ti1 = 0.01;
1395
1396     if (verbose || is_last_report) {
1397         bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1398
1399         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1400             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1401             (double)total_size / 1024, ti1, bitrate);
1402
1403         if (nb_frames_dup || nb_frames_drop)
1404           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1405                   nb_frames_dup, nb_frames_drop);
1406
1407         if (verbose >= 0)
1408             fprintf(stderr, "%s    \r", buf);
1409
1410         fflush(stderr);
1411     }
1412
1413     if (is_last_report && verbose >= 0){
1414         int64_t raw= audio_size + video_size + extra_size;
1415         fprintf(stderr, "\n");
1416         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1417                 video_size/1024.0,
1418                 audio_size/1024.0,
1419                 extra_size/1024.0,
1420                 100.0*(total_size - raw)/raw
1421         );
1422     }
1423 }
1424
1425 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1426 static int output_packet(AVInputStream *ist, int ist_index,
1427                          AVOutputStream **ost_table, int nb_ostreams,
1428                          const AVPacket *pkt)
1429 {
1430     AVFormatContext *os;
1431     AVOutputStream *ost;
1432     int ret, i;
1433     int got_picture;
1434     AVFrame picture;
1435     void *buffer_to_free;
1436     static unsigned int samples_size= 0;
1437     AVSubtitle subtitle, *subtitle_to_free;
1438     int64_t pkt_pts = AV_NOPTS_VALUE;
1439 #if CONFIG_AVFILTER
1440     int frame_available;
1441 #endif
1442
1443     AVPacket avpkt;
1444     int bps = av_get_bits_per_sample_format(ist->st->codec->sample_fmt)>>3;
1445
1446     if(ist->next_pts == AV_NOPTS_VALUE)
1447         ist->next_pts= ist->pts;
1448
1449     if (pkt == NULL) {
1450         /* EOF handling */
1451         av_init_packet(&avpkt);
1452         avpkt.data = NULL;
1453         avpkt.size = 0;
1454         goto handle_eof;
1455     } else {
1456         avpkt = *pkt;
1457     }
1458
1459     if(pkt->dts != AV_NOPTS_VALUE)
1460         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1461     if(pkt->pts != AV_NOPTS_VALUE)
1462         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1463
1464     //while we have more to decode or while the decoder did output something on EOF
1465     while (avpkt.size > 0 || (!pkt && ist->next_pts != ist->pts)) {
1466         uint8_t *data_buf, *decoded_data_buf;
1467         int data_size, decoded_data_size;
1468     handle_eof:
1469         ist->pts= ist->next_pts;
1470
1471         if(avpkt.size && avpkt.size != pkt->size &&
1472            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1473             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1474             ist->showed_multi_packet_warning=1;
1475         }
1476
1477         /* decode the packet if needed */
1478         decoded_data_buf = NULL; /* fail safe */
1479         decoded_data_size= 0;
1480         data_buf  = avpkt.data;
1481         data_size = avpkt.size;
1482         subtitle_to_free = NULL;
1483         if (ist->decoding_needed) {
1484             switch(ist->st->codec->codec_type) {
1485             case AVMEDIA_TYPE_AUDIO:{
1486                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1487                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1488                     av_free(samples);
1489                     samples= av_malloc(samples_size);
1490                 }
1491                 decoded_data_size= samples_size;
1492                     /* XXX: could avoid copy if PCM 16 bits with same
1493                        endianness as CPU */
1494                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1495                                             &avpkt);
1496                 if (ret < 0)
1497                     goto fail_decode;
1498                 avpkt.data += ret;
1499                 avpkt.size -= ret;
1500                 data_size   = ret;
1501                 /* Some bug in mpeg audio decoder gives */
1502                 /* decoded_data_size < 0, it seems they are overflows */
1503                 if (decoded_data_size <= 0) {
1504                     /* no audio frame */
1505                     continue;
1506                 }
1507                 decoded_data_buf = (uint8_t *)samples;
1508                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1509                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1510                 break;}
1511             case AVMEDIA_TYPE_VIDEO:
1512                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1513                     /* XXX: allocate picture correctly */
1514                     avcodec_get_frame_defaults(&picture);
1515                     ist->st->codec->reordered_opaque = pkt_pts;
1516                     pkt_pts = AV_NOPTS_VALUE;
1517
1518                     ret = avcodec_decode_video2(ist->st->codec,
1519                                                 &picture, &got_picture, &avpkt);
1520                     ist->st->quality= picture.quality;
1521                     if (ret < 0)
1522                         goto fail_decode;
1523                     if (!got_picture) {
1524                         /* no picture yet */
1525                         goto discard_packet;
1526                     }
1527                     ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, picture.reordered_opaque, ist->pts);
1528                     if (ist->st->codec->time_base.num != 0) {
1529                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1530                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1531                                           ist->st->codec->time_base.num * ticks) /
1532                             ist->st->codec->time_base.den;
1533                     }
1534                     avpkt.size = 0;
1535                     break;
1536             case AVMEDIA_TYPE_SUBTITLE:
1537                 ret = avcodec_decode_subtitle2(ist->st->codec,
1538                                                &subtitle, &got_picture, &avpkt);
1539                 if (ret < 0)
1540                     goto fail_decode;
1541                 if (!got_picture) {
1542                     goto discard_packet;
1543                 }
1544                 subtitle_to_free = &subtitle;
1545                 avpkt.size = 0;
1546                 break;
1547             default:
1548                 goto fail_decode;
1549             }
1550         } else {
1551             switch(ist->st->codec->codec_type) {
1552             case AVMEDIA_TYPE_AUDIO:
1553                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1554                     ist->st->codec->sample_rate;
1555                 break;
1556             case AVMEDIA_TYPE_VIDEO:
1557                 if (ist->st->codec->time_base.num != 0) {
1558                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1559                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1560                                       ist->st->codec->time_base.num * ticks) /
1561                         ist->st->codec->time_base.den;
1562                 }
1563                 break;
1564             }
1565             ret = avpkt.size;
1566             avpkt.size = 0;
1567         }
1568
1569         buffer_to_free = NULL;
1570         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1571             pre_process_video_frame(ist, (AVPicture *)&picture,
1572                                     &buffer_to_free);
1573         }
1574
1575 #if CONFIG_AVFILTER
1576         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ist->input_video_filter) {
1577             // add it to be filtered
1578             av_vsrc_buffer_add_frame(ist->input_video_filter, &picture,
1579                                      ist->pts,
1580                                      ist->st->codec->sample_aspect_ratio);
1581         }
1582 #endif
1583
1584         // preprocess audio (volume)
1585         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1586             if (audio_volume != 256) {
1587                 short *volp;
1588                 volp = samples;
1589                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1590                     int v = ((*volp) * audio_volume + 128) >> 8;
1591                     if (v < -32768) v = -32768;
1592                     if (v >  32767) v = 32767;
1593                     *volp++ = v;
1594                 }
1595             }
1596         }
1597
1598         /* frame rate emulation */
1599         if (rate_emu) {
1600             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1601             int64_t now = av_gettime() - ist->start;
1602             if (pts > now)
1603                 usleep(pts - now);
1604         }
1605 #if CONFIG_AVFILTER
1606         frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1607             !ist->output_video_filter || avfilter_poll_frame(ist->output_video_filter->inputs[0]);
1608 #endif
1609         /* if output time reached then transcode raw format,
1610            encode packets and output them */
1611         if (start_time == 0 || ist->pts >= start_time)
1612 #if CONFIG_AVFILTER
1613         while (frame_available) {
1614             AVRational ist_pts_tb;
1615             if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ist->output_video_filter)
1616                 get_filtered_video_frame(ist->output_video_filter, &picture, &ist->picref, &ist_pts_tb);
1617             if (ist->picref)
1618                 ist->pts = ist->picref->pts;
1619 #endif
1620             for(i=0;i<nb_ostreams;i++) {
1621                 int frame_size;
1622
1623                 ost = ost_table[i];
1624                 if (ost->source_index == ist_index) {
1625                     os = output_files[ost->file_index];
1626
1627                     /* set the input output pts pairs */
1628                     //ost->sync_ipts = (double)(ist->pts + input_files_ts_offset[ist->file_index] - start_time)/ AV_TIME_BASE;
1629
1630                     if (ost->encoding_needed) {
1631                         av_assert0(ist->decoding_needed);
1632                         switch(ost->st->codec->codec_type) {
1633                         case AVMEDIA_TYPE_AUDIO:
1634                             do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1635                             break;
1636                         case AVMEDIA_TYPE_VIDEO:
1637 #if CONFIG_AVFILTER
1638                             if (ist->picref->video)
1639                                 ost->st->codec->sample_aspect_ratio = ist->picref->video->pixel_aspect;
1640 #endif
1641                             do_video_out(os, ost, ist, &picture, &frame_size);
1642                             if (vstats_filename && frame_size)
1643                                 do_video_stats(os, ost, frame_size);
1644                             break;
1645                         case AVMEDIA_TYPE_SUBTITLE:
1646                             do_subtitle_out(os, ost, ist, &subtitle,
1647                                             pkt->pts);
1648                             break;
1649                         default:
1650                             abort();
1651                         }
1652                     } else {
1653                         AVFrame avframe; //FIXME/XXX remove this
1654                         AVPacket opkt;
1655                         int64_t ost_tb_start_time= av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1656
1657                         av_init_packet(&opkt);
1658
1659                         if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1660                             continue;
1661
1662                         /* no reencoding needed : output the packet directly */
1663                         /* force the input stream PTS */
1664
1665                         avcodec_get_frame_defaults(&avframe);
1666                         ost->st->codec->coded_frame= &avframe;
1667                         avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1668
1669                         if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1670                             audio_size += data_size;
1671                         else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1672                             video_size += data_size;
1673                             ost->sync_opts++;
1674                         }
1675
1676                         opkt.stream_index= ost->index;
1677                         if(pkt->pts != AV_NOPTS_VALUE)
1678                             opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1679                         else
1680                             opkt.pts= AV_NOPTS_VALUE;
1681
1682                         if (pkt->dts == AV_NOPTS_VALUE)
1683                             opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1684                         else
1685                             opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1686                         opkt.dts -= ost_tb_start_time;
1687
1688                         opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1689                         opkt.flags= pkt->flags;
1690
1691                         //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1692                         if(   ost->st->codec->codec_id != CODEC_ID_H264
1693                            && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1694                            && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1695                            ) {
1696                             if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1697                                 opkt.destruct= av_destruct_packet;
1698                         } else {
1699                             opkt.data = data_buf;
1700                             opkt.size = data_size;
1701                         }
1702
1703                         write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1704                         ost->st->codec->frame_number++;
1705                         ost->frame_number++;
1706                         av_free_packet(&opkt);
1707                     }
1708                 }
1709             }
1710
1711 #if CONFIG_AVFILTER
1712             frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1713                               ist->output_video_filter && avfilter_poll_frame(ist->output_video_filter->inputs[0]);
1714             if(ist->picref)
1715                 avfilter_unref_buffer(ist->picref);
1716         }
1717 #endif
1718         av_free(buffer_to_free);
1719         /* XXX: allocate the subtitles in the codec ? */
1720         if (subtitle_to_free) {
1721             if (subtitle_to_free->rects != NULL) {
1722                 for (i = 0; i < subtitle_to_free->num_rects; i++) {
1723                     av_freep(&subtitle_to_free->rects[i]->pict.data[0]);
1724                     av_freep(&subtitle_to_free->rects[i]->pict.data[1]);
1725                     av_freep(&subtitle_to_free->rects[i]);
1726                 }
1727                 av_freep(&subtitle_to_free->rects);
1728             }
1729             subtitle_to_free->num_rects = 0;
1730             subtitle_to_free = NULL;
1731         }
1732     }
1733  discard_packet:
1734     if (pkt == NULL) {
1735         /* EOF handling */
1736
1737         for(i=0;i<nb_ostreams;i++) {
1738             ost = ost_table[i];
1739             if (ost->source_index == ist_index) {
1740                 AVCodecContext *enc= ost->st->codec;
1741                 os = output_files[ost->file_index];
1742
1743                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1744                     continue;
1745                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1746                     continue;
1747
1748                 if (ost->encoding_needed) {
1749                     for(;;) {
1750                         AVPacket pkt;
1751                         int fifo_bytes;
1752                         av_init_packet(&pkt);
1753                         pkt.stream_index= ost->index;
1754
1755                         switch(ost->st->codec->codec_type) {
1756                         case AVMEDIA_TYPE_AUDIO:
1757                             fifo_bytes = av_fifo_size(ost->fifo);
1758                             ret = 0;
1759                             /* encode any samples remaining in fifo */
1760                             if (fifo_bytes > 0) {
1761                                 int osize = av_get_bits_per_sample_format(enc->sample_fmt) >> 3;
1762                                 int fs_tmp = enc->frame_size;
1763
1764                                 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1765                                 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1766                                     enc->frame_size = fifo_bytes / (osize * enc->channels);
1767                                 } else { /* pad */
1768                                     int frame_bytes = enc->frame_size*osize*enc->channels;
1769                                     if (allocated_audio_buf_size < frame_bytes)
1770                                         ffmpeg_exit(1);
1771                                     memset(audio_buf+fifo_bytes, 0, frame_bytes - fifo_bytes);
1772                                 }
1773
1774                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1775                                 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1776                                                           ost->st->time_base.num, enc->sample_rate);
1777                                 enc->frame_size = fs_tmp;
1778                             }
1779                             if(ret <= 0) {
1780                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1781                             }
1782                             if (ret < 0) {
1783                                 fprintf(stderr, "Audio encoding failed\n");
1784                                 ffmpeg_exit(1);
1785                             }
1786                             audio_size += ret;
1787                             pkt.flags |= AV_PKT_FLAG_KEY;
1788                             break;
1789                         case AVMEDIA_TYPE_VIDEO:
1790                             ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1791                             if (ret < 0) {
1792                                 fprintf(stderr, "Video encoding failed\n");
1793                                 ffmpeg_exit(1);
1794                             }
1795                             video_size += ret;
1796                             if(enc->coded_frame && enc->coded_frame->key_frame)
1797                                 pkt.flags |= AV_PKT_FLAG_KEY;
1798                             if (ost->logfile && enc->stats_out) {
1799                                 fprintf(ost->logfile, "%s", enc->stats_out);
1800                             }
1801                             break;
1802                         default:
1803                             ret=-1;
1804                         }
1805
1806                         if(ret<=0)
1807                             break;
1808                         pkt.data= bit_buffer;
1809                         pkt.size= ret;
1810                         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1811                             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1812                         write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1813                     }
1814                 }
1815             }
1816         }
1817     }
1818
1819     return 0;
1820  fail_decode:
1821     return -1;
1822 }
1823
1824 static void print_sdp(AVFormatContext **avc, int n)
1825 {
1826     char sdp[2048];
1827
1828     avf_sdp_create(avc, n, sdp, sizeof(sdp));
1829     printf("SDP:\n%s\n", sdp);
1830     fflush(stdout);
1831 }
1832
1833 static int copy_chapters(int infile, int outfile)
1834 {
1835     AVFormatContext *is = input_files[infile];
1836     AVFormatContext *os = output_files[outfile];
1837     int i;
1838
1839     for (i = 0; i < is->nb_chapters; i++) {
1840         AVChapter *in_ch = is->chapters[i], *out_ch;
1841         AVMetadataTag *t = NULL;
1842         int64_t ts_off   = av_rescale_q(start_time - input_files_ts_offset[infile],
1843                                       AV_TIME_BASE_Q, in_ch->time_base);
1844         int64_t rt       = (recording_time == INT64_MAX) ? INT64_MAX :
1845                            av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
1846
1847
1848         if (in_ch->end < ts_off)
1849             continue;
1850         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
1851             break;
1852
1853         out_ch = av_mallocz(sizeof(AVChapter));
1854         if (!out_ch)
1855             return AVERROR(ENOMEM);
1856
1857         out_ch->id        = in_ch->id;
1858         out_ch->time_base = in_ch->time_base;
1859         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
1860         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
1861
1862         while ((t = av_metadata_get(in_ch->metadata, "", t, AV_METADATA_IGNORE_SUFFIX)))
1863             av_metadata_set2(&out_ch->metadata, t->key, t->value, 0);
1864
1865         os->nb_chapters++;
1866         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
1867         if (!os->chapters)
1868             return AVERROR(ENOMEM);
1869         os->chapters[os->nb_chapters - 1] = out_ch;
1870     }
1871     return 0;
1872 }
1873
1874 static void parse_forced_key_frames(char *kf, AVOutputStream *ost,
1875                                     AVCodecContext *avctx)
1876 {
1877     char *p;
1878     int n = 1, i;
1879     int64_t t;
1880
1881     for (p = kf; *p; p++)
1882         if (*p == ',')
1883             n++;
1884     ost->forced_kf_count = n;
1885     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1886     if (!ost->forced_kf_pts) {
1887         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1888         ffmpeg_exit(1);
1889     }
1890     for (i = 0; i < n; i++) {
1891         p = i ? strchr(p, ',') + 1 : kf;
1892         t = parse_time_or_die("force_key_frames", p, 1);
1893         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1894     }
1895 }
1896
1897 /*
1898  * The following code is the main loop of the file converter
1899  */
1900 static int transcode(AVFormatContext **output_files,
1901                      int nb_output_files,
1902                      AVFormatContext **input_files,
1903                      int nb_input_files,
1904                      AVStreamMap *stream_maps, int nb_stream_maps)
1905 {
1906     int ret = 0, i, j, k, n, nb_istreams = 0, nb_ostreams = 0;
1907     AVFormatContext *is, *os;
1908     AVCodecContext *codec, *icodec;
1909     AVOutputStream *ost, **ost_table = NULL;
1910     AVInputStream *ist, **ist_table = NULL;
1911     AVInputFile *file_table;
1912     char error[1024];
1913     int key;
1914     int want_sdp = 1;
1915     uint8_t no_packet[MAX_FILES]={0};
1916     int no_packet_count=0;
1917
1918     file_table= av_mallocz(nb_input_files * sizeof(AVInputFile));
1919     if (!file_table)
1920         goto fail;
1921
1922     /* input stream init */
1923     j = 0;
1924     for(i=0;i<nb_input_files;i++) {
1925         is = input_files[i];
1926         file_table[i].ist_index = j;
1927         file_table[i].nb_streams = is->nb_streams;
1928         j += is->nb_streams;
1929     }
1930     nb_istreams = j;
1931
1932     ist_table = av_mallocz(nb_istreams * sizeof(AVInputStream *));
1933     if (!ist_table)
1934         goto fail;
1935
1936     for(i=0;i<nb_istreams;i++) {
1937         ist = av_mallocz(sizeof(AVInputStream));
1938         if (!ist)
1939             goto fail;
1940         ist_table[i] = ist;
1941     }
1942     j = 0;
1943     for(i=0;i<nb_input_files;i++) {
1944         is = input_files[i];
1945         for(k=0;k<is->nb_streams;k++) {
1946             ist = ist_table[j++];
1947             ist->st = is->streams[k];
1948             ist->file_index = i;
1949             ist->index = k;
1950             ist->discard = 1; /* the stream is discarded by default
1951                                  (changed later) */
1952
1953             if (rate_emu) {
1954                 ist->start = av_gettime();
1955             }
1956         }
1957     }
1958
1959     /* output stream init */
1960     nb_ostreams = 0;
1961     for(i=0;i<nb_output_files;i++) {
1962         os = output_files[i];
1963         if (!os->nb_streams) {
1964             dump_format(output_files[i], i, output_files[i]->filename, 1);
1965             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
1966             ret = AVERROR(EINVAL);
1967             goto fail;
1968         }
1969         nb_ostreams += os->nb_streams;
1970     }
1971     if (nb_stream_maps > 0 && nb_stream_maps != nb_ostreams) {
1972         fprintf(stderr, "Number of stream maps must match number of output streams\n");
1973         ret = AVERROR(EINVAL);
1974         goto fail;
1975     }
1976
1977     /* Sanity check the mapping args -- do the input files & streams exist? */
1978     for(i=0;i<nb_stream_maps;i++) {
1979         int fi = stream_maps[i].file_index;
1980         int si = stream_maps[i].stream_index;
1981
1982         if (fi < 0 || fi > nb_input_files - 1 ||
1983             si < 0 || si > file_table[fi].nb_streams - 1) {
1984             fprintf(stderr,"Could not find input stream #%d.%d\n", fi, si);
1985             ret = AVERROR(EINVAL);
1986             goto fail;
1987         }
1988         fi = stream_maps[i].sync_file_index;
1989         si = stream_maps[i].sync_stream_index;
1990         if (fi < 0 || fi > nb_input_files - 1 ||
1991             si < 0 || si > file_table[fi].nb_streams - 1) {
1992             fprintf(stderr,"Could not find sync stream #%d.%d\n", fi, si);
1993             ret = AVERROR(EINVAL);
1994             goto fail;
1995         }
1996     }
1997
1998     ost_table = av_mallocz(sizeof(AVOutputStream *) * nb_ostreams);
1999     if (!ost_table)
2000         goto fail;
2001     n = 0;
2002     for(k=0;k<nb_output_files;k++) {
2003         os = output_files[k];
2004         for(i=0;i<os->nb_streams;i++,n++) {
2005             int found;
2006             ost = ost_table[n] = output_streams_for_file[k][i];
2007             ost->st = os->streams[i];
2008             if (nb_stream_maps > 0) {
2009                 ost->source_index = file_table[stream_maps[n].file_index].ist_index +
2010                     stream_maps[n].stream_index;
2011
2012                 /* Sanity check that the stream types match */
2013                 if (ist_table[ost->source_index]->st->codec->codec_type != ost->st->codec->codec_type) {
2014                     int i= ost->file_index;
2015                     dump_format(output_files[i], i, output_files[i]->filename, 1);
2016                     fprintf(stderr, "Codec type mismatch for mapping #%d.%d -> #%d.%d\n",
2017                         stream_maps[n].file_index, stream_maps[n].stream_index,
2018                         ost->file_index, ost->index);
2019                     ffmpeg_exit(1);
2020                 }
2021
2022             } else {
2023                 int best_nb_frames=-1;
2024                 /* get corresponding input stream index : we select the first one with the right type */
2025                 found = 0;
2026                 for(j=0;j<nb_istreams;j++) {
2027                     int skip=0;
2028                     ist = ist_table[j];
2029                     if(opt_programid){
2030                         int pi,si;
2031                         AVFormatContext *f= input_files[ ist->file_index ];
2032                         skip=1;
2033                         for(pi=0; pi<f->nb_programs; pi++){
2034                             AVProgram *p= f->programs[pi];
2035                             if(p->id == opt_programid)
2036                                 for(si=0; si<p->nb_stream_indexes; si++){
2037                                     if(f->streams[ p->stream_index[si] ] == ist->st)
2038                                         skip=0;
2039                                 }
2040                         }
2041                     }
2042                     if (ist->discard && ist->st->discard != AVDISCARD_ALL && !skip &&
2043                         ist->st->codec->codec_type == ost->st->codec->codec_type) {
2044                         if(best_nb_frames < ist->st->codec_info_nb_frames){
2045                             best_nb_frames= ist->st->codec_info_nb_frames;
2046                             ost->source_index = j;
2047                             found = 1;
2048                         }
2049                     }
2050                 }
2051
2052                 if (!found) {
2053                     if(! opt_programid) {
2054                         /* try again and reuse existing stream */
2055                         for(j=0;j<nb_istreams;j++) {
2056                             ist = ist_table[j];
2057                             if (   ist->st->codec->codec_type == ost->st->codec->codec_type
2058                                 && ist->st->discard != AVDISCARD_ALL) {
2059                                 ost->source_index = j;
2060                                 found = 1;
2061                             }
2062                         }
2063                     }
2064                     if (!found) {
2065                         int i= ost->file_index;
2066                         dump_format(output_files[i], i, output_files[i]->filename, 1);
2067                         fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",
2068                                 ost->file_index, ost->index);
2069                         ffmpeg_exit(1);
2070                     }
2071                 }
2072             }
2073             ist = ist_table[ost->source_index];
2074             ist->discard = 0;
2075             ost->sync_ist = (nb_stream_maps > 0) ?
2076                 ist_table[file_table[stream_maps[n].sync_file_index].ist_index +
2077                          stream_maps[n].sync_stream_index] : ist;
2078         }
2079     }
2080
2081     /* for each output stream, we compute the right encoding parameters */
2082     for(i=0;i<nb_ostreams;i++) {
2083         AVMetadataTag *t = NULL;
2084         ost = ost_table[i];
2085         os = output_files[ost->file_index];
2086         ist = ist_table[ost->source_index];
2087
2088         codec = ost->st->codec;
2089         icodec = ist->st->codec;
2090
2091         while ((t = av_metadata_get(ist->st->metadata, "", t, AV_METADATA_IGNORE_SUFFIX))) {
2092             av_metadata_set2(&ost->st->metadata, t->key, t->value, AV_METADATA_DONT_OVERWRITE);
2093         }
2094
2095         ost->st->disposition = ist->st->disposition;
2096         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2097         codec->chroma_sample_location = icodec->chroma_sample_location;
2098
2099         if (ost->st->stream_copy) {
2100             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2101
2102             if (extra_size > INT_MAX)
2103                 goto fail;
2104
2105             /* if stream_copy is selected, no need to decode or encode */
2106             codec->codec_id = icodec->codec_id;
2107             codec->codec_type = icodec->codec_type;
2108
2109             if(!codec->codec_tag){
2110                 if(   !os->oformat->codec_tag
2111                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2112                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2113                     codec->codec_tag = icodec->codec_tag;
2114             }
2115
2116             codec->bit_rate = icodec->bit_rate;
2117             codec->rc_max_rate    = icodec->rc_max_rate;
2118             codec->rc_buffer_size = icodec->rc_buffer_size;
2119             codec->extradata= av_mallocz(extra_size);
2120             if (!codec->extradata)
2121                 goto fail;
2122             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2123             codec->extradata_size= icodec->extradata_size;
2124             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){
2125                 codec->time_base = icodec->time_base;
2126                 codec->time_base.num *= icodec->ticks_per_frame;
2127                 av_reduce(&codec->time_base.num, &codec->time_base.den,
2128                           codec->time_base.num, codec->time_base.den, INT_MAX);
2129             }else
2130                 codec->time_base = ist->st->time_base;
2131             switch(codec->codec_type) {
2132             case AVMEDIA_TYPE_AUDIO:
2133                 if(audio_volume != 256) {
2134                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2135                     ffmpeg_exit(1);
2136                 }
2137                 codec->channel_layout = icodec->channel_layout;
2138                 codec->sample_rate = icodec->sample_rate;
2139                 codec->channels = icodec->channels;
2140                 codec->frame_size = icodec->frame_size;
2141                 codec->block_align= icodec->block_align;
2142                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2143                     codec->block_align= 0;
2144                 if(codec->codec_id == CODEC_ID_AC3)
2145                     codec->block_align= 0;
2146                 break;
2147             case AVMEDIA_TYPE_VIDEO:
2148                 codec->pix_fmt = icodec->pix_fmt;
2149                 codec->width = icodec->width;
2150                 codec->height = icodec->height;
2151                 codec->has_b_frames = icodec->has_b_frames;
2152                 break;
2153             case AVMEDIA_TYPE_SUBTITLE:
2154                 codec->width = icodec->width;
2155                 codec->height = icodec->height;
2156                 break;
2157             default:
2158                 abort();
2159             }
2160         } else {
2161             switch(codec->codec_type) {
2162             case AVMEDIA_TYPE_AUDIO:
2163                 ost->fifo= av_fifo_alloc(1024);
2164                 if(!ost->fifo)
2165                     goto fail;
2166                 ost->reformat_pair = MAKE_SFMT_PAIR(SAMPLE_FMT_NONE,SAMPLE_FMT_NONE);
2167                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2168                 icodec->request_channels = codec->channels;
2169                 ist->decoding_needed = 1;
2170                 ost->encoding_needed = 1;
2171                 break;
2172             case AVMEDIA_TYPE_VIDEO:
2173                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2174                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2175                     ffmpeg_exit(1);
2176                 }
2177                 ost->video_resample = (codec->width != icodec->width   ||
2178                                        codec->height != icodec->height ||
2179                         (codec->pix_fmt != icodec->pix_fmt));
2180                 if (ost->video_resample) {
2181                     avcodec_get_frame_defaults(&ost->pict_tmp);
2182                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2183                                          codec->width, codec->height)) {
2184                         fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
2185                         ffmpeg_exit(1);
2186                     }
2187                     sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
2188                     ost->img_resample_ctx = sws_getContext(
2189                         icodec->width,
2190                         icodec->height,
2191                             icodec->pix_fmt,
2192                             codec->width,
2193                             codec->height,
2194                             codec->pix_fmt,
2195                             sws_flags, NULL, NULL, NULL);
2196                     if (ost->img_resample_ctx == NULL) {
2197                         fprintf(stderr, "Cannot get resampling context\n");
2198                         ffmpeg_exit(1);
2199                     }
2200
2201 #if !CONFIG_AVFILTER
2202                     ost->original_height = icodec->height;
2203                     ost->original_width  = icodec->width;
2204 #endif
2205                     codec->bits_per_raw_sample= 0;
2206                 }
2207                 ost->resample_height = icodec->height;
2208                 ost->resample_width  = icodec->width;
2209                 ost->resample_pix_fmt= icodec->pix_fmt;
2210                 ost->encoding_needed = 1;
2211                 ist->decoding_needed = 1;
2212
2213 #if CONFIG_AVFILTER
2214                 if (configure_filters(ist, ost)) {
2215                     fprintf(stderr, "Error opening filters!\n");
2216                     exit(1);
2217                 }
2218 #endif
2219                 break;
2220             case AVMEDIA_TYPE_SUBTITLE:
2221                 ost->encoding_needed = 1;
2222                 ist->decoding_needed = 1;
2223                 break;
2224             default:
2225                 abort();
2226                 break;
2227             }
2228             /* two pass mode */
2229             if (ost->encoding_needed &&
2230                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2231                 char logfilename[1024];
2232                 FILE *f;
2233
2234                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2235                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2236                          i);
2237                 if (codec->flags & CODEC_FLAG_PASS1) {
2238                     f = fopen(logfilename, "wb");
2239                     if (!f) {
2240                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2241                         ffmpeg_exit(1);
2242                     }
2243                     ost->logfile = f;
2244                 } else {
2245                     char  *logbuffer;
2246                     size_t logbuffer_size;
2247                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2248                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2249                         ffmpeg_exit(1);
2250                     }
2251                     codec->stats_in = logbuffer;
2252                 }
2253             }
2254         }
2255         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2256             int size= codec->width * codec->height;
2257             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2258         }
2259     }
2260
2261     if (!bit_buffer)
2262         bit_buffer = av_malloc(bit_buffer_size);
2263     if (!bit_buffer) {
2264         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2265                 bit_buffer_size);
2266         ret = AVERROR(ENOMEM);
2267         goto fail;
2268     }
2269
2270     /* open each encoder */
2271     for(i=0;i<nb_ostreams;i++) {
2272         ost = ost_table[i];
2273         if (ost->encoding_needed) {
2274             AVCodec *codec = i < nb_output_codecs ? output_codecs[i] : NULL;
2275             if (!codec)
2276                 codec = avcodec_find_encoder(ost->st->codec->codec_id);
2277             if (!codec) {
2278                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2279                          ost->st->codec->codec_id, ost->file_index, ost->index);
2280                 ret = AVERROR(EINVAL);
2281                 goto dump_format;
2282             }
2283             if (avcodec_open(ost->st->codec, codec) < 0) {
2284                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2285                         ost->file_index, ost->index);
2286                 ret = AVERROR(EINVAL);
2287                 goto dump_format;
2288             }
2289             extra_size += ost->st->codec->extradata_size;
2290         }
2291     }
2292
2293     /* open each decoder */
2294     for(i=0;i<nb_istreams;i++) {
2295         ist = ist_table[i];
2296         if (ist->decoding_needed) {
2297             AVCodec *codec = i < nb_input_codecs ? input_codecs[i] : NULL;
2298             if (!codec)
2299                 codec = avcodec_find_decoder(ist->st->codec->codec_id);
2300             if (!codec) {
2301                 snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
2302                         ist->st->codec->codec_id, ist->file_index, ist->index);
2303                 ret = AVERROR(EINVAL);
2304                 goto dump_format;
2305             }
2306             if (avcodec_open(ist->st->codec, codec) < 0) {
2307                 snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
2308                         ist->file_index, ist->index);
2309                 ret = AVERROR(EINVAL);
2310                 goto dump_format;
2311             }
2312             //if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2313             //    ist->st->codec->flags |= CODEC_FLAG_REPEAT_FIELD;
2314         }
2315     }
2316
2317     /* init pts */
2318     for(i=0;i<nb_istreams;i++) {
2319         AVStream *st;
2320         ist = ist_table[i];
2321         st= ist->st;
2322         ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
2323         ist->next_pts = AV_NOPTS_VALUE;
2324         init_pts_correction(&ist->pts_ctx);
2325         ist->is_start = 1;
2326     }
2327
2328     /* set meta data information from input file if required */
2329     for (i=0;i<nb_meta_data_maps;i++) {
2330         AVFormatContext *out_file;
2331         AVFormatContext *in_file;
2332         AVMetadataTag *mtag;
2333
2334         int out_file_index = meta_data_maps[i].out_file;
2335         int in_file_index = meta_data_maps[i].in_file;
2336         if (out_file_index < 0 || out_file_index >= nb_output_files) {
2337             snprintf(error, sizeof(error), "Invalid output file index %d map_meta_data(%d,%d)",
2338                      out_file_index, out_file_index, in_file_index);
2339             ret = AVERROR(EINVAL);
2340             goto dump_format;
2341         }
2342         if (in_file_index < 0 || in_file_index >= nb_input_files) {
2343             snprintf(error, sizeof(error), "Invalid input file index %d map_meta_data(%d,%d)",
2344                      in_file_index, out_file_index, in_file_index);
2345             ret = AVERROR(EINVAL);
2346             goto dump_format;
2347         }
2348
2349         out_file = output_files[out_file_index];
2350         in_file = input_files[in_file_index];
2351
2352
2353         mtag=NULL;
2354         while((mtag=av_metadata_get(in_file->metadata, "", mtag, AV_METADATA_IGNORE_SUFFIX)))
2355             av_metadata_set2(&out_file->metadata, mtag->key, mtag->value, AV_METADATA_DONT_OVERWRITE);
2356     }
2357
2358     /* copy chapters from the first input file that has them*/
2359     for (i = 0; i < nb_input_files; i++) {
2360         if (!input_files[i]->nb_chapters)
2361             continue;
2362
2363         for (j = 0; j < nb_output_files; j++)
2364             if ((ret = copy_chapters(i, j)) < 0)
2365                 goto dump_format;
2366     }
2367
2368     /* open files and write file headers */
2369     for(i=0;i<nb_output_files;i++) {
2370         os = output_files[i];
2371         if (av_write_header(os) < 0) {
2372             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2373             ret = AVERROR(EINVAL);
2374             goto dump_format;
2375         }
2376         if (strcmp(output_files[i]->oformat->name, "rtp")) {
2377             want_sdp = 0;
2378         }
2379     }
2380
2381  dump_format:
2382     /* dump the file output parameters - cannot be done before in case
2383        of stream copy */
2384     for(i=0;i<nb_output_files;i++) {
2385         dump_format(output_files[i], i, output_files[i]->filename, 1);
2386     }
2387
2388     /* dump the stream mapping */
2389     if (verbose >= 0) {
2390         fprintf(stderr, "Stream mapping:\n");
2391         for(i=0;i<nb_ostreams;i++) {
2392             ost = ost_table[i];
2393             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2394                     ist_table[ost->source_index]->file_index,
2395                     ist_table[ost->source_index]->index,
2396                     ost->file_index,
2397                     ost->index);
2398             if (ost->sync_ist != ist_table[ost->source_index])
2399                 fprintf(stderr, " [sync #%d.%d]",
2400                         ost->sync_ist->file_index,
2401                         ost->sync_ist->index);
2402             fprintf(stderr, "\n");
2403         }
2404     }
2405
2406     if (ret) {
2407         fprintf(stderr, "%s\n", error);
2408         goto fail;
2409     }
2410
2411     if (want_sdp) {
2412         print_sdp(output_files, nb_output_files);
2413     }
2414
2415     if (!using_stdin && verbose >= 0) {
2416         fprintf(stderr, "Press [q] to stop encoding\n");
2417         url_set_interrupt_cb(decode_interrupt_cb);
2418     }
2419     term_init();
2420
2421     timer_start = av_gettime();
2422
2423     for(; received_sigterm == 0;) {
2424         int file_index, ist_index;
2425         AVPacket pkt;
2426         double ipts_min;
2427         double opts_min;
2428
2429     redo:
2430         ipts_min= 1e100;
2431         opts_min= 1e100;
2432         /* if 'q' pressed, exits */
2433         if (!using_stdin) {
2434             if (q_pressed)
2435                 break;
2436             /* read_key() returns 0 on EOF */
2437             key = read_key();
2438             if (key == 'q')
2439                 break;
2440         }
2441
2442         /* select the stream that we must read now by looking at the
2443            smallest output pts */
2444         file_index = -1;
2445         for(i=0;i<nb_ostreams;i++) {
2446             double ipts, opts;
2447             ost = ost_table[i];
2448             os = output_files[ost->file_index];
2449             ist = ist_table[ost->source_index];
2450             if(ist->is_past_recording_time || no_packet[ist->file_index])
2451                 continue;
2452                 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2453             ipts = (double)ist->pts;
2454             if (!file_table[ist->file_index].eof_reached){
2455                 if(ipts < ipts_min) {
2456                     ipts_min = ipts;
2457                     if(input_sync ) file_index = ist->file_index;
2458                 }
2459                 if(opts < opts_min) {
2460                     opts_min = opts;
2461                     if(!input_sync) file_index = ist->file_index;
2462                 }
2463             }
2464             if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
2465                 file_index= -1;
2466                 break;
2467             }
2468         }
2469         /* if none, if is finished */
2470         if (file_index < 0) {
2471             if(no_packet_count){
2472                 no_packet_count=0;
2473                 memset(no_packet, 0, sizeof(no_packet));
2474                 usleep(10000);
2475                 continue;
2476             }
2477             break;
2478         }
2479
2480         /* finish if limit size exhausted */
2481         if (limit_filesize != 0 && limit_filesize <= url_ftell(output_files[0]->pb))
2482             break;
2483
2484         /* read a frame from it and output it in the fifo */
2485         is = input_files[file_index];
2486         ret= av_read_frame(is, &pkt);
2487         if(ret == AVERROR(EAGAIN)){
2488             no_packet[file_index]=1;
2489             no_packet_count++;
2490             continue;
2491         }
2492         if (ret < 0) {
2493             file_table[file_index].eof_reached = 1;
2494             if (opt_shortest)
2495                 break;
2496             else
2497                 continue;
2498         }
2499
2500         no_packet_count=0;
2501         memset(no_packet, 0, sizeof(no_packet));
2502
2503         if (do_pkt_dump) {
2504             av_pkt_dump_log(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump);
2505         }
2506         /* the following test is needed in case new streams appear
2507            dynamically in stream : we ignore them */
2508         if (pkt.stream_index >= file_table[file_index].nb_streams)
2509             goto discard_packet;
2510         ist_index = file_table[file_index].ist_index + pkt.stream_index;
2511         ist = ist_table[ist_index];
2512         if (ist->discard)
2513             goto discard_packet;
2514
2515         if (pkt.dts != AV_NOPTS_VALUE)
2516             pkt.dts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2517         if (pkt.pts != AV_NOPTS_VALUE)
2518             pkt.pts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2519
2520         if (pkt.stream_index < nb_input_files_ts_scale[file_index]
2521             && input_files_ts_scale[file_index][pkt.stream_index]){
2522             if(pkt.pts != AV_NOPTS_VALUE)
2523                 pkt.pts *= input_files_ts_scale[file_index][pkt.stream_index];
2524             if(pkt.dts != AV_NOPTS_VALUE)
2525                 pkt.dts *= input_files_ts_scale[file_index][pkt.stream_index];
2526         }
2527
2528 //        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);
2529         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2530             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2531             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2532             int64_t delta= pkt_dts - ist->next_pts;
2533             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2534                 input_files_ts_offset[ist->file_index]-= delta;
2535                 if (verbose > 2)
2536                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n", delta, input_files_ts_offset[ist->file_index]);
2537                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2538                 if(pkt.pts != AV_NOPTS_VALUE)
2539                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2540             }
2541         }
2542
2543         /* finish if recording time exhausted */
2544         if (recording_time != INT64_MAX &&
2545             av_compare_ts(pkt.pts, ist->st->time_base, recording_time + start_time, (AVRational){1, 1000000}) >= 0) {
2546             ist->is_past_recording_time = 1;
2547             goto discard_packet;
2548         }
2549
2550         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->index, pkt.size);
2551         if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
2552
2553             if (verbose >= 0)
2554                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2555                         ist->file_index, ist->index);
2556             if (exit_on_error)
2557                 ffmpeg_exit(1);
2558             av_free_packet(&pkt);
2559             goto redo;
2560         }
2561
2562     discard_packet:
2563         av_free_packet(&pkt);
2564
2565         /* dump report by using the output first video and audio streams */
2566         print_report(output_files, ost_table, nb_ostreams, 0);
2567     }
2568
2569     /* at the end of stream, we must flush the decoder buffers */
2570     for(i=0;i<nb_istreams;i++) {
2571         ist = ist_table[i];
2572         if (ist->decoding_needed) {
2573             output_packet(ist, i, ost_table, nb_ostreams, NULL);
2574         }
2575     }
2576
2577     term_exit();
2578
2579     /* write the trailer if needed and close file */
2580     for(i=0;i<nb_output_files;i++) {
2581         os = output_files[i];
2582         av_write_trailer(os);
2583     }
2584
2585     /* dump report by using the first video and audio streams */
2586     print_report(output_files, ost_table, nb_ostreams, 1);
2587
2588     /* close each encoder */
2589     for(i=0;i<nb_ostreams;i++) {
2590         ost = ost_table[i];
2591         if (ost->encoding_needed) {
2592             av_freep(&ost->st->codec->stats_in);
2593             avcodec_close(ost->st->codec);
2594         }
2595     }
2596
2597     /* close each decoder */
2598     for(i=0;i<nb_istreams;i++) {
2599         ist = ist_table[i];
2600         if (ist->decoding_needed) {
2601             avcodec_close(ist->st->codec);
2602         }
2603     }
2604 #if CONFIG_AVFILTER
2605     if (graph) {
2606         avfilter_graph_destroy(graph);
2607         av_freep(&graph);
2608     }
2609 #endif
2610
2611     /* finished ! */
2612     ret = 0;
2613
2614  fail:
2615     av_freep(&bit_buffer);
2616     av_free(file_table);
2617
2618     if (ist_table) {
2619         for(i=0;i<nb_istreams;i++) {
2620             ist = ist_table[i];
2621             av_free(ist);
2622         }
2623         av_free(ist_table);
2624     }
2625     if (ost_table) {
2626         for(i=0;i<nb_ostreams;i++) {
2627             ost = ost_table[i];
2628             if (ost) {
2629                 if (ost->st->stream_copy)
2630                     av_freep(&ost->st->codec->extradata);
2631                 if (ost->logfile) {
2632                     fclose(ost->logfile);
2633                     ost->logfile = NULL;
2634                 }
2635                 av_fifo_free(ost->fifo); /* works even if fifo is not
2636                                              initialized but set to zero */
2637                 av_free(ost->pict_tmp.data[0]);
2638                 av_free(ost->forced_kf_pts);
2639                 if (ost->video_resample)
2640                     sws_freeContext(ost->img_resample_ctx);
2641                 if (ost->resample)
2642                     audio_resample_close(ost->resample);
2643                 if (ost->reformat_ctx)
2644                     av_audio_convert_free(ost->reformat_ctx);
2645                 av_free(ost);
2646             }
2647         }
2648         av_free(ost_table);
2649     }
2650     return ret;
2651 }
2652
2653 static void opt_format(const char *arg)
2654 {
2655     /* compatibility stuff for pgmyuv */
2656     if (!strcmp(arg, "pgmyuv")) {
2657         pgmyuv_compatibility_hack=1;
2658 //        opt_image_format(arg);
2659         arg = "image2";
2660         fprintf(stderr, "pgmyuv format is deprecated, use image2\n");
2661     }
2662
2663     last_asked_format = arg;
2664 }
2665
2666 static void opt_video_rc_override_string(const char *arg)
2667 {
2668     video_rc_override_string = arg;
2669 }
2670
2671 static int opt_me_threshold(const char *opt, const char *arg)
2672 {
2673     me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2674     return 0;
2675 }
2676
2677 static int opt_verbose(const char *opt, const char *arg)
2678 {
2679     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2680     return 0;
2681 }
2682
2683 static int opt_frame_rate(const char *opt, const char *arg)
2684 {
2685     if (av_parse_video_rate(&frame_rate, arg) < 0) {
2686         fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2687         ffmpeg_exit(1);
2688     }
2689     return 0;
2690 }
2691
2692 static int opt_bitrate(const char *opt, const char *arg)
2693 {
2694     int codec_type = opt[0]=='a' ? AVMEDIA_TYPE_AUDIO : AVMEDIA_TYPE_VIDEO;
2695
2696     opt_default(opt, arg);
2697
2698     if (av_get_int(avcodec_opts[codec_type], "b", NULL) < 1000)
2699         fprintf(stderr, "WARNING: The bitrate parameter is set too low. It takes bits/s as argument, not kbits/s\n");
2700
2701     return 0;
2702 }
2703
2704 static int opt_frame_crop(const char *opt, const char *arg)
2705 {
2706     fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
2707     return AVERROR(EINVAL);
2708 }
2709
2710 static void opt_frame_size(const char *arg)
2711 {
2712     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2713         fprintf(stderr, "Incorrect frame size\n");
2714         ffmpeg_exit(1);
2715     }
2716 }
2717
2718 static int opt_pad(const char *opt, const char *arg) {
2719     fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2720     return -1;
2721 }
2722
2723 static void opt_frame_pix_fmt(const char *arg)
2724 {
2725     if (strcmp(arg, "list")) {
2726         frame_pix_fmt = av_get_pix_fmt(arg);
2727         if (frame_pix_fmt == PIX_FMT_NONE) {
2728             fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2729             ffmpeg_exit(1);
2730         }
2731     } else {
2732         show_pix_fmts();
2733         ffmpeg_exit(0);
2734     }
2735 }
2736
2737 static void opt_frame_aspect_ratio(const char *arg)
2738 {
2739     int x = 0, y = 0;
2740     double ar = 0;
2741     const char *p;
2742     char *end;
2743
2744     p = strchr(arg, ':');
2745     if (p) {
2746         x = strtol(arg, &end, 10);
2747         if (end == p)
2748             y = strtol(end+1, &end, 10);
2749         if (x > 0 && y > 0)
2750             ar = (double)x / (double)y;
2751     } else
2752         ar = strtod(arg, NULL);
2753
2754     if (!ar) {
2755         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2756         ffmpeg_exit(1);
2757     }
2758     frame_aspect_ratio = ar;
2759 }
2760
2761 static int opt_metadata(const char *opt, const char *arg)
2762 {
2763     char *mid= strchr(arg, '=');
2764
2765     if(!mid){
2766         fprintf(stderr, "Missing =\n");
2767         ffmpeg_exit(1);
2768     }
2769     *mid++= 0;
2770
2771     av_metadata_set2(&metadata, arg, mid, 0);
2772
2773     return 0;
2774 }
2775
2776 static void opt_qscale(const char *arg)
2777 {
2778     video_qscale = atof(arg);
2779     if (video_qscale <= 0 ||
2780         video_qscale > 255) {
2781         fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2782         ffmpeg_exit(1);
2783     }
2784 }
2785
2786 static void opt_top_field_first(const char *arg)
2787 {
2788     top_field_first= atoi(arg);
2789 }
2790
2791 static int opt_thread_count(const char *opt, const char *arg)
2792 {
2793     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2794 #if !HAVE_THREADS
2795     if (verbose >= 0)
2796         fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2797 #endif
2798     return 0;
2799 }
2800
2801 static void opt_audio_sample_fmt(const char *arg)
2802 {
2803     if (strcmp(arg, "list"))
2804         audio_sample_fmt = avcodec_get_sample_fmt(arg);
2805     else {
2806         list_fmts(avcodec_sample_fmt_string, SAMPLE_FMT_NB);
2807         ffmpeg_exit(0);
2808     }
2809 }
2810
2811 static int opt_audio_rate(const char *opt, const char *arg)
2812 {
2813     audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2814     return 0;
2815 }
2816
2817 static int opt_audio_channels(const char *opt, const char *arg)
2818 {
2819     audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2820     return 0;
2821 }
2822
2823 static void opt_video_channel(const char *arg)
2824 {
2825     video_channel = strtol(arg, NULL, 0);
2826 }
2827
2828 static void opt_video_standard(const char *arg)
2829 {
2830     video_standard = av_strdup(arg);
2831 }
2832
2833 static void opt_codec(int *pstream_copy, char **pcodec_name,
2834                       int codec_type, const char *arg)
2835 {
2836     av_freep(pcodec_name);
2837     if (!strcmp(arg, "copy")) {
2838         *pstream_copy = 1;
2839     } else {
2840         *pcodec_name = av_strdup(arg);
2841     }
2842 }
2843
2844 static void opt_audio_codec(const char *arg)
2845 {
2846     opt_codec(&audio_stream_copy, &audio_codec_name, AVMEDIA_TYPE_AUDIO, arg);
2847 }
2848
2849 static void opt_video_codec(const char *arg)
2850 {
2851     opt_codec(&video_stream_copy, &video_codec_name, AVMEDIA_TYPE_VIDEO, arg);
2852 }
2853
2854 static void opt_subtitle_codec(const char *arg)
2855 {
2856     opt_codec(&subtitle_stream_copy, &subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, arg);
2857 }
2858
2859 static int opt_codec_tag(const char *opt, const char *arg)
2860 {
2861     char *tail;
2862     uint32_t *codec_tag;
2863
2864     codec_tag = !strcmp(opt, "atag") ? &audio_codec_tag :
2865                 !strcmp(opt, "vtag") ? &video_codec_tag :
2866                 !strcmp(opt, "stag") ? &subtitle_codec_tag : NULL;
2867     if (!codec_tag)
2868         return -1;
2869
2870     *codec_tag = strtol(arg, &tail, 0);
2871     if (!tail || *tail)
2872         *codec_tag = AV_RL32(arg);
2873
2874     return 0;
2875 }
2876
2877 static void opt_map(const char *arg)
2878 {
2879     AVStreamMap *m;
2880     char *p;
2881
2882     stream_maps = grow_array(stream_maps, sizeof(*stream_maps), &nb_stream_maps, nb_stream_maps + 1);
2883     m = &stream_maps[nb_stream_maps-1];
2884
2885     m->file_index = strtol(arg, &p, 0);
2886     if (*p)
2887         p++;
2888
2889     m->stream_index = strtol(p, &p, 0);
2890     if (*p) {
2891         p++;
2892         m->sync_file_index = strtol(p, &p, 0);
2893         if (*p)
2894             p++;
2895         m->sync_stream_index = strtol(p, &p, 0);
2896     } else {
2897         m->sync_file_index = m->file_index;
2898         m->sync_stream_index = m->stream_index;
2899     }
2900 }
2901
2902 static void opt_map_meta_data(const char *arg)
2903 {
2904     AVMetaDataMap *m;
2905     char *p;
2906
2907     meta_data_maps = grow_array(meta_data_maps, sizeof(*meta_data_maps),
2908                                 &nb_meta_data_maps, nb_meta_data_maps + 1);
2909
2910     m = &meta_data_maps[nb_meta_data_maps - 1];
2911     m->out_file = strtol(arg, &p, 0);
2912     if (*p)
2913         p++;
2914
2915     m->in_file = strtol(p, &p, 0);
2916 }
2917
2918 static void opt_input_ts_scale(const char *arg)
2919 {
2920     unsigned int stream;
2921     double scale;
2922     char *p;
2923
2924     stream = strtol(arg, &p, 0);
2925     if (*p)
2926         p++;
2927     scale= strtod(p, &p);
2928
2929     if(stream >= MAX_STREAMS)
2930         ffmpeg_exit(1);
2931
2932     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);
2933     input_files_ts_scale[nb_input_files][stream]= scale;
2934 }
2935
2936 static int opt_recording_time(const char *opt, const char *arg)
2937 {
2938     recording_time = parse_time_or_die(opt, arg, 1);
2939     return 0;
2940 }
2941
2942 static int opt_start_time(const char *opt, const char *arg)
2943 {
2944     start_time = parse_time_or_die(opt, arg, 1);
2945     return 0;
2946 }
2947
2948 static int opt_recording_timestamp(const char *opt, const char *arg)
2949 {
2950     recording_timestamp = parse_time_or_die(opt, arg, 0) / 1000000;
2951     return 0;
2952 }
2953
2954 static int opt_input_ts_offset(const char *opt, const char *arg)
2955 {
2956     input_ts_offset = parse_time_or_die(opt, arg, 1);
2957     return 0;
2958 }
2959
2960 static enum CodecID find_codec_or_die(const char *name, int type, int encoder, int strict)
2961 {
2962     const char *codec_string = encoder ? "encoder" : "decoder";
2963     AVCodec *codec;
2964
2965     if(!name)
2966         return CODEC_ID_NONE;
2967     codec = encoder ?
2968         avcodec_find_encoder_by_name(name) :
2969         avcodec_find_decoder_by_name(name);
2970     if(!codec) {
2971         fprintf(stderr, "Unknown %s '%s'\n", codec_string, name);
2972         ffmpeg_exit(1);
2973     }
2974     if(codec->type != type) {
2975         fprintf(stderr, "Invalid %s type '%s'\n", codec_string, name);
2976         ffmpeg_exit(1);
2977     }
2978     if(codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
2979        strict > FF_COMPLIANCE_EXPERIMENTAL) {
2980         fprintf(stderr, "%s '%s' is experimental and might produce bad "
2981                 "results.\nAdd '-strict experimental' if you want to use it.\n",
2982                 codec_string, codec->name);
2983         codec = encoder ?
2984             avcodec_find_encoder(codec->id) :
2985             avcodec_find_decoder(codec->id);
2986         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
2987             fprintf(stderr, "Or use the non experimental %s '%s'.\n",
2988                     codec_string, codec->name);
2989         ffmpeg_exit(1);
2990     }
2991     return codec->id;
2992 }
2993
2994 static void opt_input_file(const char *filename)
2995 {
2996     AVFormatContext *ic;
2997     AVFormatParameters params, *ap = &params;
2998     AVInputFormat *file_iformat = NULL;
2999     int err, i, ret, rfps, rfps_base;
3000     int64_t timestamp;
3001
3002     if (last_asked_format) {
3003         if (!(file_iformat = av_find_input_format(last_asked_format))) {
3004             fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
3005             ffmpeg_exit(1);
3006         }
3007         last_asked_format = NULL;
3008     }
3009
3010     if (!strcmp(filename, "-"))
3011         filename = "pipe:";
3012
3013     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3014                     !strcmp(filename, "/dev/stdin");
3015
3016     /* get default parameters from command line */
3017     ic = avformat_alloc_context();
3018     if (!ic) {
3019         print_error(filename, AVERROR(ENOMEM));
3020         ffmpeg_exit(1);
3021     }
3022
3023     memset(ap, 0, sizeof(*ap));
3024     ap->prealloced_context = 1;
3025     ap->sample_rate = audio_sample_rate;
3026     ap->channels = audio_channels;
3027     ap->time_base.den = frame_rate.num;
3028     ap->time_base.num = frame_rate.den;
3029     ap->width = frame_width;
3030     ap->height = frame_height;
3031     ap->pix_fmt = frame_pix_fmt;
3032    // ap->sample_fmt = audio_sample_fmt; //FIXME:not implemented in libavformat
3033     ap->channel = video_channel;
3034     ap->standard = video_standard;
3035
3036     set_context_opts(ic, avformat_opts, AV_OPT_FLAG_DECODING_PARAM, NULL);
3037
3038     ic->video_codec_id   =
3039         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0,
3040                           avcodec_opts[AVMEDIA_TYPE_VIDEO   ]->strict_std_compliance);
3041     ic->audio_codec_id   =
3042         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0,
3043                           avcodec_opts[AVMEDIA_TYPE_AUDIO   ]->strict_std_compliance);
3044     ic->subtitle_codec_id=
3045         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0,
3046                           avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->strict_std_compliance);
3047     ic->flags |= AVFMT_FLAG_NONBLOCK;
3048
3049     if(pgmyuv_compatibility_hack)
3050         ic->video_codec_id= CODEC_ID_PGMYUV;
3051
3052     /* open the input file with generic libav function */
3053     err = av_open_input_file(&ic, filename, file_iformat, 0, ap);
3054     if (err < 0) {
3055         print_error(filename, err);
3056         ffmpeg_exit(1);
3057     }
3058     if(opt_programid) {
3059         int i, j;
3060         int found=0;
3061         for(i=0; i<ic->nb_streams; i++){
3062             ic->streams[i]->discard= AVDISCARD_ALL;
3063         }
3064         for(i=0; i<ic->nb_programs; i++){
3065             AVProgram *p= ic->programs[i];
3066             if(p->id != opt_programid){
3067                 p->discard = AVDISCARD_ALL;
3068             }else{
3069                 found=1;
3070                 for(j=0; j<p->nb_stream_indexes; j++){
3071                     ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
3072                 }
3073             }
3074         }
3075         if(!found){
3076             fprintf(stderr, "Specified program id not found\n");
3077             ffmpeg_exit(1);
3078         }
3079         opt_programid=0;
3080     }
3081
3082     ic->loop_input = loop_input;
3083
3084     /* If not enough info to get the stream parameters, we decode the
3085        first frames to get it. (used in mpeg case for example) */
3086     ret = av_find_stream_info(ic);
3087     if (ret < 0 && verbose >= 0) {
3088         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3089         av_close_input_file(ic);
3090         ffmpeg_exit(1);
3091     }
3092
3093     timestamp = start_time;
3094     /* add the stream start time */
3095     if (ic->start_time != AV_NOPTS_VALUE)
3096         timestamp += ic->start_time;
3097
3098     /* if seeking requested, we execute it */
3099     if (start_time != 0) {
3100         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3101         if (ret < 0) {
3102             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3103                     filename, (double)timestamp / AV_TIME_BASE);
3104         }
3105         /* reset seek info */
3106         start_time = 0;
3107     }
3108
3109     /* update the current parameters so that they match the one of the input stream */
3110     for(i=0;i<ic->nb_streams;i++) {
3111         AVStream *st = ic->streams[i];
3112         AVCodecContext *dec = st->codec;
3113         avcodec_thread_init(dec, thread_count);
3114         input_codecs = grow_array(input_codecs, sizeof(*input_codecs), &nb_input_codecs, nb_input_codecs + 1);
3115         switch (dec->codec_type) {
3116         case AVMEDIA_TYPE_AUDIO:
3117             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(audio_codec_name);
3118             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]);
3119             //fprintf(stderr, "\nInput Audio channels: %d", dec->channels);
3120             channel_layout    = dec->channel_layout;
3121             audio_channels    = dec->channels;
3122             audio_sample_rate = dec->sample_rate;
3123             audio_sample_fmt  = dec->sample_fmt;
3124             if(audio_disable)
3125                 st->discard= AVDISCARD_ALL;
3126             /* Note that av_find_stream_info can add more streams, and we
3127              * currently have no chance of setting up lowres decoding
3128              * early enough for them. */
3129             if (dec->lowres)
3130                 audio_sample_rate >>= dec->lowres;
3131             break;
3132         case AVMEDIA_TYPE_VIDEO:
3133             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(video_codec_name);
3134             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]);
3135             frame_height = dec->height;
3136             frame_width  = dec->width;
3137             if(ic->streams[i]->sample_aspect_ratio.num)
3138                 frame_aspect_ratio=av_q2d(ic->streams[i]->sample_aspect_ratio);
3139             else
3140                 frame_aspect_ratio=av_q2d(dec->sample_aspect_ratio);
3141             frame_aspect_ratio *= (float) dec->width / dec->height;
3142             frame_pix_fmt = dec->pix_fmt;
3143             rfps      = ic->streams[i]->r_frame_rate.num;
3144             rfps_base = ic->streams[i]->r_frame_rate.den;
3145             if (dec->lowres) {
3146                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3147                 frame_height >>= dec->lowres;
3148                 frame_width  >>= dec->lowres;
3149             }
3150             if(me_threshold)
3151                 dec->debug |= FF_DEBUG_MV;
3152
3153             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3154
3155                 if (verbose >= 0)
3156                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3157                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3158
3159                     (float)rfps / rfps_base, rfps, rfps_base);
3160             }
3161             /* update the current frame rate to match the stream frame rate */
3162             frame_rate.num = rfps;
3163             frame_rate.den = rfps_base;
3164
3165             if(video_disable)
3166                 st->discard= AVDISCARD_ALL;
3167             else if(video_discard)
3168                 st->discard= video_discard;
3169             break;
3170         case AVMEDIA_TYPE_DATA:
3171             break;
3172         case AVMEDIA_TYPE_SUBTITLE:
3173             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(subtitle_codec_name);
3174             if(subtitle_disable)
3175                 st->discard = AVDISCARD_ALL;
3176             break;
3177         case AVMEDIA_TYPE_ATTACHMENT:
3178         case AVMEDIA_TYPE_UNKNOWN:
3179             break;
3180         default:
3181             abort();
3182         }
3183     }
3184
3185     input_files[nb_input_files] = ic;
3186     input_files_ts_offset[nb_input_files] = input_ts_offset - (copy_ts ? 0 : timestamp);
3187     /* dump the file content */
3188     if (verbose >= 0)
3189         dump_format(ic, nb_input_files, filename, 0);
3190
3191     nb_input_files++;
3192
3193     video_channel = 0;
3194
3195     av_freep(&video_codec_name);
3196     av_freep(&audio_codec_name);
3197     av_freep(&subtitle_codec_name);
3198 }
3199
3200 static void check_audio_video_sub_inputs(int *has_video_ptr, int *has_audio_ptr,
3201                                          int *has_subtitle_ptr)
3202 {
3203     int has_video, has_audio, has_subtitle, i, j;
3204     AVFormatContext *ic;
3205
3206     has_video = 0;
3207     has_audio = 0;
3208     has_subtitle = 0;
3209     for(j=0;j<nb_input_files;j++) {
3210         ic = input_files[j];
3211         for(i=0;i<ic->nb_streams;i++) {
3212             AVCodecContext *enc = ic->streams[i]->codec;
3213             switch(enc->codec_type) {
3214             case AVMEDIA_TYPE_AUDIO:
3215                 has_audio = 1;
3216                 break;
3217             case AVMEDIA_TYPE_VIDEO:
3218                 has_video = 1;
3219                 break;
3220             case AVMEDIA_TYPE_SUBTITLE:
3221                 has_subtitle = 1;
3222                 break;
3223             case AVMEDIA_TYPE_DATA:
3224             case AVMEDIA_TYPE_ATTACHMENT:
3225             case AVMEDIA_TYPE_UNKNOWN:
3226                 break;
3227             default:
3228                 abort();
3229             }
3230         }
3231     }
3232     *has_video_ptr = has_video;
3233     *has_audio_ptr = has_audio;
3234     *has_subtitle_ptr = has_subtitle;
3235 }
3236
3237 static void new_video_stream(AVFormatContext *oc, int file_idx)
3238 {
3239     AVStream *st;
3240     AVOutputStream *ost;
3241     AVCodecContext *video_enc;
3242     enum CodecID codec_id;
3243     AVCodec *codec= NULL;
3244
3245     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3246     if (!st) {
3247         fprintf(stderr, "Could not alloc stream\n");
3248         ffmpeg_exit(1);
3249     }
3250     ost = new_output_stream(oc, file_idx);
3251
3252     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3253     if(!video_stream_copy){
3254         if (video_codec_name) {
3255             codec_id = find_codec_or_die(video_codec_name, AVMEDIA_TYPE_VIDEO, 1,
3256                                          avcodec_opts[AVMEDIA_TYPE_VIDEO]->strict_std_compliance);
3257             codec = avcodec_find_encoder_by_name(video_codec_name);
3258             output_codecs[nb_output_codecs-1] = codec;
3259         } else {
3260             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_VIDEO);
3261             codec = avcodec_find_encoder(codec_id);
3262         }
3263     }
3264
3265     avcodec_get_context_defaults3(st->codec, codec);
3266     ost->bitstream_filters = video_bitstream_filters;
3267     video_bitstream_filters= NULL;
3268
3269     avcodec_thread_init(st->codec, thread_count);
3270
3271     video_enc = st->codec;
3272
3273     if(video_codec_tag)
3274         video_enc->codec_tag= video_codec_tag;
3275
3276     if(   (video_global_header&1)
3277        || (video_global_header==0 && (oc->oformat->flags & AVFMT_GLOBALHEADER))){
3278         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3279         avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3280     }
3281     if(video_global_header&2){
3282         video_enc->flags2 |= CODEC_FLAG2_LOCAL_HEADER;
3283         avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags2|= CODEC_FLAG2_LOCAL_HEADER;
3284     }
3285
3286     if (video_stream_copy) {
3287         st->stream_copy = 1;
3288         video_enc->codec_type = AVMEDIA_TYPE_VIDEO;
3289         video_enc->sample_aspect_ratio =
3290         st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3291     } else {
3292         const char *p;
3293         int i;
3294         AVRational fps= frame_rate.num ? frame_rate : (AVRational){25,1};
3295
3296         video_enc->codec_id = codec_id;
3297         set_context_opts(video_enc, avcodec_opts[AVMEDIA_TYPE_VIDEO], AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3298
3299         if (codec && codec->supported_framerates && !force_fps)
3300             fps = codec->supported_framerates[av_find_nearest_q_idx(fps, codec->supported_framerates)];
3301         video_enc->time_base.den = fps.num;
3302         video_enc->time_base.num = fps.den;
3303
3304         video_enc->width = frame_width;
3305         video_enc->height = frame_height;
3306         video_enc->sample_aspect_ratio = av_d2q(frame_aspect_ratio*video_enc->height/video_enc->width, 255);
3307         video_enc->pix_fmt = frame_pix_fmt;
3308         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3309
3310         choose_pixel_fmt(st, codec);
3311
3312         if (intra_only)
3313             video_enc->gop_size = 0;
3314         if (video_qscale || same_quality) {
3315             video_enc->flags |= CODEC_FLAG_QSCALE;
3316             video_enc->global_quality=
3317                 st->quality = FF_QP2LAMBDA * video_qscale;
3318         }
3319
3320         if(intra_matrix)
3321             video_enc->intra_matrix = intra_matrix;
3322         if(inter_matrix)
3323             video_enc->inter_matrix = inter_matrix;
3324
3325         p= video_rc_override_string;
3326         for(i=0; p; i++){
3327             int start, end, q;
3328             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3329             if(e!=3){
3330                 fprintf(stderr, "error parsing rc_override\n");
3331                 ffmpeg_exit(1);
3332             }
3333             video_enc->rc_override=
3334                 av_realloc(video_enc->rc_override,
3335                            sizeof(RcOverride)*(i+1));
3336             video_enc->rc_override[i].start_frame= start;
3337             video_enc->rc_override[i].end_frame  = end;
3338             if(q>0){
3339                 video_enc->rc_override[i].qscale= q;
3340                 video_enc->rc_override[i].quality_factor= 1.0;
3341             }
3342             else{
3343                 video_enc->rc_override[i].qscale= 0;
3344                 video_enc->rc_override[i].quality_factor= -q/100.0;
3345             }
3346             p= strchr(p, '/');
3347             if(p) p++;
3348         }
3349         video_enc->rc_override_count=i;
3350         if (!video_enc->rc_initial_buffer_occupancy)
3351             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3352         video_enc->me_threshold= me_threshold;
3353         video_enc->intra_dc_precision= intra_dc_precision - 8;
3354
3355         if (do_psnr)
3356             video_enc->flags|= CODEC_FLAG_PSNR;
3357
3358         /* two pass mode */
3359         if (do_pass) {
3360             if (do_pass == 1) {
3361                 video_enc->flags |= CODEC_FLAG_PASS1;
3362             } else {
3363                 video_enc->flags |= CODEC_FLAG_PASS2;
3364             }
3365         }
3366
3367         if (forced_key_frames)
3368             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3369     }
3370     if (video_language) {
3371         av_metadata_set2(&st->metadata, "language", video_language, 0);
3372         av_freep(&video_language);
3373     }
3374
3375     /* reset some key parameters */
3376     video_disable = 0;
3377     av_freep(&video_codec_name);
3378     av_freep(&forced_key_frames);
3379     video_stream_copy = 0;
3380     frame_pix_fmt = PIX_FMT_NONE;
3381 }
3382
3383 static void new_audio_stream(AVFormatContext *oc, int file_idx)
3384 {
3385     AVStream *st;
3386     AVOutputStream *ost;
3387     AVCodec *codec= NULL;
3388     AVCodecContext *audio_enc;
3389     enum CodecID codec_id;
3390
3391     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3392     if (!st) {
3393         fprintf(stderr, "Could not alloc stream\n");
3394         ffmpeg_exit(1);
3395     }
3396     ost = new_output_stream(oc, file_idx);
3397
3398     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3399     if(!audio_stream_copy){
3400         if (audio_codec_name) {
3401             codec_id = find_codec_or_die(audio_codec_name, AVMEDIA_TYPE_AUDIO, 1,
3402                                          avcodec_opts[AVMEDIA_TYPE_AUDIO]->strict_std_compliance);
3403             codec = avcodec_find_encoder_by_name(audio_codec_name);
3404             output_codecs[nb_output_codecs-1] = codec;
3405         } else {
3406             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_AUDIO);
3407             codec = avcodec_find_encoder(codec_id);
3408         }
3409     }
3410
3411     avcodec_get_context_defaults3(st->codec, codec);
3412
3413     ost->bitstream_filters = audio_bitstream_filters;
3414     audio_bitstream_filters= NULL;
3415
3416     avcodec_thread_init(st->codec, thread_count);
3417
3418     audio_enc = st->codec;
3419     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3420
3421     if(audio_codec_tag)
3422         audio_enc->codec_tag= audio_codec_tag;
3423
3424     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3425         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3426         avcodec_opts[AVMEDIA_TYPE_AUDIO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3427     }
3428     if (audio_stream_copy) {
3429         st->stream_copy = 1;
3430         audio_enc->channels = audio_channels;
3431         audio_enc->sample_rate = audio_sample_rate;
3432     } else {
3433         audio_enc->codec_id = codec_id;
3434         set_context_opts(audio_enc, avcodec_opts[AVMEDIA_TYPE_AUDIO], AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3435
3436         if (audio_qscale > QSCALE_NONE) {
3437             audio_enc->flags |= CODEC_FLAG_QSCALE;
3438             audio_enc->global_quality = st->quality = FF_QP2LAMBDA * audio_qscale;
3439         }
3440         audio_enc->channels = audio_channels;
3441         audio_enc->sample_fmt = audio_sample_fmt;
3442         audio_enc->sample_rate = audio_sample_rate;
3443         audio_enc->channel_layout = channel_layout;
3444         if (avcodec_channel_layout_num_channels(channel_layout) != audio_channels)
3445             audio_enc->channel_layout = 0;
3446         choose_sample_fmt(st, codec);
3447         choose_sample_rate(st, codec);
3448     }
3449     audio_enc->time_base= (AVRational){1, audio_sample_rate};
3450     if (audio_language) {
3451         av_metadata_set2(&st->metadata, "language", audio_language, 0);
3452         av_freep(&audio_language);
3453     }
3454
3455     /* reset some key parameters */
3456     audio_disable = 0;
3457     av_freep(&audio_codec_name);
3458     audio_stream_copy = 0;
3459 }
3460
3461 static void new_subtitle_stream(AVFormatContext *oc, int file_idx)
3462 {
3463     AVStream *st;
3464     AVOutputStream *ost;
3465     AVCodec *codec=NULL;
3466     AVCodecContext *subtitle_enc;
3467
3468     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3469     if (!st) {
3470         fprintf(stderr, "Could not alloc stream\n");
3471         ffmpeg_exit(1);
3472     }
3473     ost = new_output_stream(oc, file_idx);
3474     subtitle_enc = st->codec;
3475     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3476     if(!subtitle_stream_copy){
3477         subtitle_enc->codec_id = find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 1,
3478                                                    avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->strict_std_compliance);
3479         codec= output_codecs[nb_output_codecs-1] = avcodec_find_encoder_by_name(subtitle_codec_name);
3480     }
3481     avcodec_get_context_defaults3(st->codec, codec);
3482
3483     ost->bitstream_filters = subtitle_bitstream_filters;
3484     subtitle_bitstream_filters= NULL;
3485
3486     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3487
3488     if(subtitle_codec_tag)
3489         subtitle_enc->codec_tag= subtitle_codec_tag;
3490
3491     if (subtitle_stream_copy) {
3492         st->stream_copy = 1;
3493     } else {
3494         set_context_opts(avcodec_opts[AVMEDIA_TYPE_SUBTITLE], subtitle_enc, AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3495     }
3496
3497     if (subtitle_language) {
3498         av_metadata_set2(&st->metadata, "language", subtitle_language, 0);
3499         av_freep(&subtitle_language);
3500     }
3501
3502     subtitle_disable = 0;
3503     av_freep(&subtitle_codec_name);
3504     subtitle_stream_copy = 0;
3505 }
3506
3507 static int opt_new_stream(const char *opt, const char *arg)
3508 {
3509     AVFormatContext *oc;
3510     int file_idx = nb_output_files - 1;
3511     if (nb_output_files <= 0) {
3512         fprintf(stderr, "At least one output file must be specified\n");
3513         ffmpeg_exit(1);
3514     }
3515     oc = output_files[file_idx];
3516
3517     if      (!strcmp(opt, "newvideo"   )) new_video_stream   (oc, file_idx);
3518     else if (!strcmp(opt, "newaudio"   )) new_audio_stream   (oc, file_idx);
3519     else if (!strcmp(opt, "newsubtitle")) new_subtitle_stream(oc, file_idx);
3520     else av_assert0(0);
3521     return 0;
3522 }
3523
3524 /* arg format is "output-stream-index:streamid-value". */
3525 static int opt_streamid(const char *opt, const char *arg)
3526 {
3527     int idx;
3528     char *p;
3529     char idx_str[16];
3530
3531     strncpy(idx_str, arg, sizeof(idx_str));
3532     idx_str[sizeof(idx_str)-1] = '\0';
3533     p = strchr(idx_str, ':');
3534     if (!p) {
3535         fprintf(stderr,
3536                 "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3537                 arg, opt);
3538         ffmpeg_exit(1);
3539     }
3540     *p++ = '\0';
3541     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, MAX_STREAMS-1);
3542     streamid_map = grow_array(streamid_map, sizeof(*streamid_map), &nb_streamid_map, idx+1);
3543     streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3544     return 0;
3545 }
3546
3547 static void opt_output_file(const char *filename)
3548 {
3549     AVFormatContext *oc;
3550     int err, use_video, use_audio, use_subtitle;
3551     int input_has_video, input_has_audio, input_has_subtitle;
3552     AVFormatParameters params, *ap = &params;
3553     AVOutputFormat *file_oformat;
3554     AVMetadataTag *tag = NULL;
3555
3556     if (!strcmp(filename, "-"))
3557         filename = "pipe:";
3558
3559     oc = avformat_alloc_context();
3560     if (!oc) {
3561         print_error(filename, AVERROR(ENOMEM));
3562         ffmpeg_exit(1);
3563     }
3564
3565     if (last_asked_format) {
3566         file_oformat = av_guess_format(last_asked_format, NULL, NULL);
3567         if (!file_oformat) {
3568             fprintf(stderr, "Requested output format '%s' is not a suitable output format\n", last_asked_format);
3569             ffmpeg_exit(1);
3570         }
3571         last_asked_format = NULL;
3572     } else {
3573         file_oformat = av_guess_format(NULL, filename, NULL);
3574         if (!file_oformat) {
3575             fprintf(stderr, "Unable to find a suitable output format for '%s'\n",
3576                     filename);
3577             ffmpeg_exit(1);
3578         }
3579     }
3580
3581     oc->oformat = file_oformat;
3582     av_strlcpy(oc->filename, filename, sizeof(oc->filename));
3583
3584     if (!strcmp(file_oformat->name, "ffm") &&
3585         av_strstart(filename, "http:", NULL)) {
3586         /* special case for files sent to ffserver: we get the stream
3587            parameters from ffserver */
3588         int err = read_ffserver_streams(oc, filename);
3589         if (err < 0) {
3590             print_error(filename, err);
3591             ffmpeg_exit(1);
3592         }
3593     } else {
3594         use_video = file_oformat->video_codec != CODEC_ID_NONE || video_stream_copy || video_codec_name;
3595         use_audio = file_oformat->audio_codec != CODEC_ID_NONE || audio_stream_copy || audio_codec_name;
3596         use_subtitle = file_oformat->subtitle_codec != CODEC_ID_NONE || subtitle_stream_copy || subtitle_codec_name;
3597
3598         /* disable if no corresponding type found and at least one
3599            input file */
3600         if (nb_input_files > 0) {
3601             check_audio_video_sub_inputs(&input_has_video, &input_has_audio,
3602                                          &input_has_subtitle);
3603             if (!input_has_video)
3604                 use_video = 0;
3605             if (!input_has_audio)
3606                 use_audio = 0;
3607             if (!input_has_subtitle)
3608                 use_subtitle = 0;
3609         }
3610
3611         /* manual disable */
3612         if (audio_disable)    use_audio    = 0;
3613         if (video_disable)    use_video    = 0;
3614         if (subtitle_disable) use_subtitle = 0;
3615
3616         if (use_video)    new_video_stream(oc, nb_output_files);
3617         if (use_audio)    new_audio_stream(oc, nb_output_files);
3618         if (use_subtitle) new_subtitle_stream(oc, nb_output_files);
3619
3620         oc->timestamp = recording_timestamp;
3621
3622         while ((tag = av_metadata_get(metadata, "", tag, AV_METADATA_IGNORE_SUFFIX)))
3623             av_metadata_set2(&oc->metadata, tag->key, tag->value, 0);
3624         av_metadata_free(&metadata);
3625     }
3626
3627     output_files[nb_output_files++] = oc;
3628
3629     /* check filename in case of an image number is expected */
3630     if (oc->oformat->flags & AVFMT_NEEDNUMBER) {
3631         if (!av_filename_number_test(oc->filename)) {
3632             print_error(oc->filename, AVERROR_NUMEXPECTED);
3633             ffmpeg_exit(1);
3634         }
3635     }
3636
3637     if (!(oc->oformat->flags & AVFMT_NOFILE)) {
3638         /* test if it already exists to avoid loosing precious files */
3639         if (!file_overwrite &&
3640             (strchr(filename, ':') == NULL ||
3641              filename[1] == ':' ||
3642              av_strstart(filename, "file:", NULL))) {
3643             if (url_exist(filename)) {
3644                 if (!using_stdin) {
3645                     fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3646                     fflush(stderr);
3647                     if (!read_yesno()) {
3648                         fprintf(stderr, "Not overwriting - exiting\n");
3649                         ffmpeg_exit(1);
3650                     }
3651                 }
3652                 else {
3653                     fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
3654                     ffmpeg_exit(1);
3655                 }
3656             }
3657         }
3658
3659         /* open the file */
3660         if ((err = url_fopen(&oc->pb, filename, URL_WRONLY)) < 0) {
3661             print_error(filename, err);
3662             ffmpeg_exit(1);
3663         }
3664     }
3665
3666     memset(ap, 0, sizeof(*ap));
3667     if (av_set_parameters(oc, ap) < 0) {
3668         fprintf(stderr, "%s: Invalid encoding parameters\n",
3669                 oc->filename);
3670         ffmpeg_exit(1);
3671     }
3672
3673     oc->preload= (int)(mux_preload*AV_TIME_BASE);
3674     oc->max_delay= (int)(mux_max_delay*AV_TIME_BASE);
3675     oc->loop_output = loop_output;
3676     oc->flags |= AVFMT_FLAG_NONBLOCK;
3677
3678     set_context_opts(oc, avformat_opts, AV_OPT_FLAG_ENCODING_PARAM, NULL);
3679
3680     nb_streamid_map = 0;
3681     av_freep(&forced_key_frames);
3682 }
3683