379ac0441a3882086e32e8b506d422c4cd414350
[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/audioconvert.h"
40 #include "libavcore/parseutils.h"
41 #include "libavcore/samplefmt.h"
42 #include "libavutil/colorspace.h"
43 #include "libavutil/fifo.h"
44 #include "libavutil/intreadwrite.h"
45 #include "libavutil/pixdesc.h"
46 #include "libavutil/avstring.h"
47 #include "libavutil/libm.h"
48 #include "libavformat/os_support.h"
49
50 #if CONFIG_AVFILTER
51 # include "libavfilter/avfilter.h"
52 # include "libavfilter/avfiltergraph.h"
53 # include "libavfilter/vsrc_buffer.h"
54 #endif
55
56 #if HAVE_SYS_RESOURCE_H
57 #include <sys/types.h>
58 #include <sys/time.h>
59 #include <sys/resource.h>
60 #elif HAVE_GETPROCESSTIMES
61 #include <windows.h>
62 #endif
63 #if HAVE_GETPROCESSMEMORYINFO
64 #include <windows.h>
65 #include <psapi.h>
66 #endif
67
68 #if HAVE_SYS_SELECT_H
69 #include <sys/select.h>
70 #endif
71
72 #if HAVE_TERMIOS_H
73 #include <fcntl.h>
74 #include <sys/ioctl.h>
75 #include <sys/time.h>
76 #include <termios.h>
77 #elif HAVE_CONIO_H
78 #include <conio.h>
79 #endif
80 #include <time.h>
81
82 #include "cmdutils.h"
83
84 #include "libavutil/avassert.h"
85
86 const char program_name[] = "FFmpeg";
87 const int program_birth_year = 2000;
88
89 /* select an input stream for an output stream */
90 typedef struct AVStreamMap {
91     int file_index;
92     int stream_index;
93     int sync_file_index;
94     int sync_stream_index;
95 } AVStreamMap;
96
97 /**
98  * select an input file for an output file
99  */
100 typedef struct AVMetaDataMap {
101     int  file;      //< file index
102     char type;      //< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
103     int  index;     //< stream/chapter/program number
104 } AVMetaDataMap;
105
106 typedef struct AVChapterMap {
107     int in_file;
108     int out_file;
109 } AVChapterMap;
110
111 static const OptionDef options[];
112
113 #define MAX_FILES 100
114 #if !FF_API_MAX_STREAMS
115 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
116 #endif
117
118 static const char *last_asked_format = NULL;
119 static AVFormatContext *input_files[MAX_FILES];
120 static int64_t input_files_ts_offset[MAX_FILES];
121 static double *input_files_ts_scale[MAX_FILES] = {NULL};
122 static AVCodec **input_codecs = NULL;
123 static int nb_input_files = 0;
124 static int nb_input_codecs = 0;
125 static int nb_input_files_ts_scale[MAX_FILES] = {0};
126
127 static AVFormatContext *output_files[MAX_FILES];
128 static AVCodec **output_codecs = NULL;
129 static int nb_output_files = 0;
130 static int nb_output_codecs = 0;
131
132 static AVStreamMap *stream_maps = NULL;
133 static int nb_stream_maps;
134
135 /* first item specifies output metadata, second is input */
136 static AVMetaDataMap (*meta_data_maps)[2] = NULL;
137 static int nb_meta_data_maps;
138 static int metadata_global_autocopy   = 1;
139 static int metadata_streams_autocopy  = 1;
140 static int metadata_chapters_autocopy = 1;
141
142 static AVChapterMap *chapter_maps = NULL;
143 static int nb_chapter_maps;
144
145 /* indexed by output file stream index */
146 static int *streamid_map = NULL;
147 static int nb_streamid_map = 0;
148
149 static int frame_width  = 0;
150 static int frame_height = 0;
151 static float frame_aspect_ratio = 0;
152 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
153 static enum AVSampleFormat audio_sample_fmt = AV_SAMPLE_FMT_NONE;
154 static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
155 static AVRational frame_rate;
156 static float video_qscale = 0;
157 static uint16_t *intra_matrix = NULL;
158 static uint16_t *inter_matrix = NULL;
159 static const char *video_rc_override_string=NULL;
160 static int video_disable = 0;
161 static int video_discard = 0;
162 static char *video_codec_name = NULL;
163 static unsigned int video_codec_tag = 0;
164 static char *video_language = NULL;
165 static int same_quality = 0;
166 static int do_deinterlace = 0;
167 static int top_field_first = -1;
168 static int me_threshold = 0;
169 static int intra_dc_precision = 8;
170 static int loop_input = 0;
171 static int loop_output = AVFMT_NOOUTPUTLOOP;
172 static int qp_hist = 0;
173 #if CONFIG_AVFILTER
174 static char *vfilters = NULL;
175 static AVFilterGraph *graph = NULL;
176 #endif
177
178 static int intra_only = 0;
179 static int audio_sample_rate = 44100;
180 static int64_t channel_layout = 0;
181 #define QSCALE_NONE -99999
182 static float audio_qscale = QSCALE_NONE;
183 static int audio_disable = 0;
184 static int audio_channels = 1;
185 static char  *audio_codec_name = NULL;
186 static unsigned int audio_codec_tag = 0;
187 static char *audio_language = NULL;
188
189 static int subtitle_disable = 0;
190 static char *subtitle_codec_name = NULL;
191 static char *subtitle_language = NULL;
192 static unsigned int subtitle_codec_tag = 0;
193
194 static float mux_preload= 0.5;
195 static float mux_max_delay= 0.7;
196
197 static int64_t recording_time = INT64_MAX;
198 static int64_t start_time = 0;
199 static int64_t recording_timestamp = 0;
200 static int64_t input_ts_offset = 0;
201 static int file_overwrite = 0;
202 static AVMetadata *metadata;
203 static int do_benchmark = 0;
204 static int do_hex_dump = 0;
205 static int do_pkt_dump = 0;
206 static int do_psnr = 0;
207 static int do_pass = 0;
208 static char *pass_logfilename_prefix = NULL;
209 static int audio_stream_copy = 0;
210 static int video_stream_copy = 0;
211 static int subtitle_stream_copy = 0;
212 static int video_sync_method= -1;
213 static int audio_sync_method= 0;
214 static float audio_drift_threshold= 0.1;
215 static int copy_ts= 0;
216 static int copy_tb;
217 static int opt_shortest = 0;
218 static int video_global_header = 0;
219 static char *vstats_filename;
220 static FILE *vstats_file;
221 static int opt_programid = 0;
222 static int copy_initial_nonkeyframes = 0;
223
224 static int rate_emu = 0;
225
226 static int  video_channel = 0;
227 static char *video_standard;
228
229 static int audio_volume = 256;
230
231 static int exit_on_error = 0;
232 static int using_stdin = 0;
233 static int verbose = 1;
234 static int thread_count= 1;
235 static int q_pressed = 0;
236 static int64_t video_size = 0;
237 static int64_t audio_size = 0;
238 static int64_t extra_size = 0;
239 static int nb_frames_dup = 0;
240 static int nb_frames_drop = 0;
241 static int input_sync;
242 static uint64_t limit_filesize = 0;
243 static int force_fps = 0;
244 static char *forced_key_frames = NULL;
245
246 static float dts_delta_threshold = 10;
247
248 static unsigned int sws_flags = SWS_BICUBIC;
249
250 static int64_t timer_start;
251
252 static uint8_t *audio_buf;
253 static uint8_t *audio_out;
254 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
255
256 static short *samples;
257
258 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
259 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
260 static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL;
261
262 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
263
264 struct AVInputStream;
265
266 typedef struct AVOutputStream {
267     int file_index;          /* file index */
268     int index;               /* stream index in the output file */
269     int source_index;        /* AVInputStream index */
270     AVStream *st;            /* stream in the output file */
271     int encoding_needed;     /* true if encoding needed for this stream */
272     int frame_number;
273     /* input pts and corresponding output pts
274        for A/V sync */
275     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
276     struct AVInputStream *sync_ist; /* input stream to sync against */
277     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
278     AVBitStreamFilterContext *bitstream_filters;
279     /* video only */
280     int video_resample;
281     AVFrame pict_tmp;      /* temporary image for resampling */
282     struct SwsContext *img_resample_ctx; /* for image resampling */
283     int resample_height;
284     int resample_width;
285     int resample_pix_fmt;
286
287     /* full frame size of first frame */
288     int original_height;
289     int original_width;
290
291     /* forced key frames */
292     int64_t *forced_kf_pts;
293     int forced_kf_count;
294     int forced_kf_index;
295
296     /* audio only */
297     int audio_resample;
298     ReSampleContext *resample; /* for audio resampling */
299     int resample_sample_fmt;
300     int resample_channels;
301     int resample_sample_rate;
302     int reformat_pair;
303     AVAudioConvert *reformat_ctx;
304     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
305     FILE *logfile;
306 } AVOutputStream;
307
308 static AVOutputStream **output_streams_for_file[MAX_FILES] = { NULL };
309 static int nb_output_streams_for_file[MAX_FILES] = { 0 };
310
311 typedef struct AVInputStream {
312     int file_index;
313     int index;
314     AVStream *st;
315     int discard;             /* true if stream data should be discarded */
316     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
317     int64_t sample_index;      /* current sample */
318
319     int64_t       start;     /* time when read started */
320     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
321                                 is not defined */
322     int64_t       pts;       /* current pts */
323     int is_start;            /* is 1 at the start and after a discontinuity */
324     int showed_multi_packet_warning;
325     int is_past_recording_time;
326 #if CONFIG_AVFILTER
327     AVFilterContext *output_video_filter;
328     AVFilterContext *input_video_filter;
329     AVFrame *filter_frame;
330     int has_filter_frame;
331     AVFilterBufferRef *picref;
332 #endif
333 } AVInputStream;
334
335 typedef struct AVInputFile {
336     int eof_reached;      /* true if eof reached */
337     int ist_index;        /* index of first stream in ist_table */
338     int buffer_size;      /* current total buffer size */
339     int nb_streams;       /* nb streams we are aware of */
340 } AVInputFile;
341
342 #if HAVE_TERMIOS_H
343
344 /* init terminal so that we can grab keys */
345 static struct termios oldtty;
346 #endif
347
348 #if CONFIG_AVFILTER
349
350 static int configure_filters(AVInputStream *ist, AVOutputStream *ost)
351 {
352     AVFilterContext *last_filter, *filter;
353     /** filter graph containing all filters including input & output */
354     AVCodecContext *codec = ost->st->codec;
355     AVCodecContext *icodec = ist->st->codec;
356     FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
357     AVRational sample_aspect_ratio;
358     char args[255];
359     int ret;
360
361     graph = avfilter_graph_alloc();
362
363     if (ist->st->sample_aspect_ratio.num){
364         sample_aspect_ratio = ist->st->sample_aspect_ratio;
365     }else
366         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
367
368     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
369              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
370              sample_aspect_ratio.num, sample_aspect_ratio.den);
371
372     ret = avfilter_graph_create_filter(&ist->input_video_filter, avfilter_get_by_name("buffer"),
373                                        "src", args, NULL, graph);
374     if (ret < 0)
375         return ret;
376     ret = avfilter_graph_create_filter(&ist->output_video_filter, &ffsink,
377                                        "out", NULL, &ffsink_ctx, graph);
378     if (ret < 0)
379         return ret;
380     last_filter = ist->input_video_filter;
381
382     if (codec->width  != icodec->width || codec->height != icodec->height) {
383         snprintf(args, 255, "%d:%d:flags=0x%X",
384                  codec->width,
385                  codec->height,
386                  (int)av_get_int(sws_opts, "sws_flags", NULL));
387         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
388                                                 NULL, args, NULL, graph)) < 0)
389             return ret;
390         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
391             return ret;
392         last_filter = filter;
393     }
394
395     snprintf(args, sizeof(args), "flags=0x%X", (int)av_get_int(sws_opts, "sws_flags", NULL));
396     graph->scale_sws_opts = av_strdup(args);
397
398     if (vfilters) {
399         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
400         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
401
402         outputs->name    = av_strdup("in");
403         outputs->filter_ctx = last_filter;
404         outputs->pad_idx = 0;
405         outputs->next    = NULL;
406
407         inputs->name    = av_strdup("out");
408         inputs->filter_ctx = ist->output_video_filter;
409         inputs->pad_idx = 0;
410         inputs->next    = NULL;
411
412         if ((ret = avfilter_graph_parse(graph, vfilters, inputs, outputs, NULL)) < 0)
413             return ret;
414         av_freep(&vfilters);
415     } else {
416         if ((ret = avfilter_link(last_filter, 0, ist->output_video_filter, 0)) < 0)
417             return ret;
418     }
419
420     if ((ret = avfilter_graph_config(graph, NULL)) < 0)
421         return ret;
422
423     codec->width  = ist->output_video_filter->inputs[0]->w;
424     codec->height = ist->output_video_filter->inputs[0]->h;
425     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
426         ist->output_video_filter->inputs[0]->sample_aspect_ratio;
427
428     return 0;
429 }
430 #endif /* CONFIG_AVFILTER */
431
432 static void term_exit(void)
433 {
434     av_log(NULL, AV_LOG_QUIET, "");
435 #if HAVE_TERMIOS_H
436     tcsetattr (0, TCSANOW, &oldtty);
437 #endif
438 }
439
440 static volatile int received_sigterm = 0;
441
442 static void
443 sigterm_handler(int sig)
444 {
445     received_sigterm = sig;
446     term_exit();
447 }
448
449 static void term_init(void)
450 {
451 #if HAVE_TERMIOS_H
452     struct termios tty;
453
454     tcgetattr (0, &tty);
455     oldtty = tty;
456     atexit(term_exit);
457
458     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
459                           |INLCR|IGNCR|ICRNL|IXON);
460     tty.c_oflag |= OPOST;
461     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
462     tty.c_cflag &= ~(CSIZE|PARENB);
463     tty.c_cflag |= CS8;
464     tty.c_cc[VMIN] = 1;
465     tty.c_cc[VTIME] = 0;
466
467     tcsetattr (0, TCSANOW, &tty);
468     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
469 #endif
470
471     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
472     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
473 #ifdef SIGXCPU
474     signal(SIGXCPU, sigterm_handler);
475 #endif
476 }
477
478 /* read a key without blocking */
479 static int read_key(void)
480 {
481 #if HAVE_TERMIOS_H
482     int n = 1;
483     unsigned char ch;
484     struct timeval tv;
485     fd_set rfds;
486
487     FD_ZERO(&rfds);
488     FD_SET(0, &rfds);
489     tv.tv_sec = 0;
490     tv.tv_usec = 0;
491     n = select(1, &rfds, NULL, NULL, &tv);
492     if (n > 0) {
493         n = read(0, &ch, 1);
494         if (n == 1)
495             return ch;
496
497         return n;
498     }
499 #elif HAVE_CONIO_H
500     if(kbhit())
501         return(getch());
502 #endif
503     return -1;
504 }
505
506 static int decode_interrupt_cb(void)
507 {
508     return q_pressed || (q_pressed = read_key() == 'q');
509 }
510
511 static int ffmpeg_exit(int ret)
512 {
513     int i;
514
515     /* close files */
516     for(i=0;i<nb_output_files;i++) {
517         AVFormatContext *s = output_files[i];
518         int j;
519         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
520             url_fclose(s->pb);
521         avformat_free_context(s);
522         av_free(output_streams_for_file[i]);
523     }
524     for(i=0;i<nb_input_files;i++) {
525         av_close_input_file(input_files[i]);
526         av_free(input_files_ts_scale[i]);
527     }
528
529     av_free(intra_matrix);
530     av_free(inter_matrix);
531
532     if (vstats_file)
533         fclose(vstats_file);
534     av_free(vstats_filename);
535
536     av_free(streamid_map);
537     av_free(input_codecs);
538     av_free(output_codecs);
539     av_free(stream_maps);
540     av_free(meta_data_maps);
541
542     av_free(video_codec_name);
543     av_free(audio_codec_name);
544     av_free(subtitle_codec_name);
545
546     av_free(video_standard);
547
548     uninit_opts();
549     av_free(audio_buf);
550     av_free(audio_out);
551     allocated_audio_buf_size= allocated_audio_out_size= 0;
552     av_free(samples);
553
554 #if CONFIG_AVFILTER
555     avfilter_uninit();
556 #endif
557
558     if (received_sigterm) {
559         fprintf(stderr,
560             "Received signal %d: terminating.\n",
561             (int) received_sigterm);
562         exit (255);
563     }
564
565     exit(ret); /* not all OS-es handle main() return value */
566     return ret;
567 }
568
569 /* similar to ff_dynarray_add() and av_fast_realloc() */
570 static void *grow_array(void *array, int elem_size, int *size, int new_size)
571 {
572     if (new_size >= INT_MAX / elem_size) {
573         fprintf(stderr, "Array too big.\n");
574         ffmpeg_exit(1);
575     }
576     if (*size < new_size) {
577         uint8_t *tmp = av_realloc(array, new_size*elem_size);
578         if (!tmp) {
579             fprintf(stderr, "Could not alloc buffer.\n");
580             ffmpeg_exit(1);
581         }
582         memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
583         *size = new_size;
584         return tmp;
585     }
586     return array;
587 }
588
589 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
590 {
591     if(codec && codec->sample_fmts){
592         const enum AVSampleFormat *p= codec->sample_fmts;
593         for(; *p!=-1; p++){
594             if(*p == st->codec->sample_fmt)
595                 break;
596         }
597         if (*p == -1) {
598             av_log(NULL, AV_LOG_WARNING,
599                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
600                    av_get_sample_fmt_name(st->codec->sample_fmt),
601                    codec->name,
602                    av_get_sample_fmt_name(codec->sample_fmts[0]));
603             st->codec->sample_fmt = codec->sample_fmts[0];
604         }
605     }
606 }
607
608 static void choose_sample_rate(AVStream *st, AVCodec *codec)
609 {
610     if(codec && codec->supported_samplerates){
611         const int *p= codec->supported_samplerates;
612         int best=0;
613         int best_dist=INT_MAX;
614         for(; *p; p++){
615             int dist= abs(st->codec->sample_rate - *p);
616             if(dist < best_dist){
617                 best_dist= dist;
618                 best= *p;
619             }
620         }
621         if(best_dist){
622             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
623         }
624         st->codec->sample_rate= best;
625     }
626 }
627
628 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
629 {
630     if(codec && codec->pix_fmts){
631         const enum PixelFormat *p= codec->pix_fmts;
632         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
633             if(st->codec->codec_id==CODEC_ID_MJPEG){
634                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
635             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
636                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE};
637             }
638         }
639         for(; *p!=-1; p++){
640             if(*p == st->codec->pix_fmt)
641                 break;
642         }
643         if(*p == -1)
644             st->codec->pix_fmt = codec->pix_fmts[0];
645     }
646 }
647
648 static AVOutputStream *new_output_stream(AVFormatContext *oc, int file_idx)
649 {
650     int idx = oc->nb_streams - 1;
651     AVOutputStream *ost;
652
653     output_streams_for_file[file_idx] =
654         grow_array(output_streams_for_file[file_idx],
655                    sizeof(*output_streams_for_file[file_idx]),
656                    &nb_output_streams_for_file[file_idx],
657                    oc->nb_streams);
658     ost = output_streams_for_file[file_idx][idx] =
659         av_mallocz(sizeof(AVOutputStream));
660     if (!ost) {
661         fprintf(stderr, "Could not alloc output stream\n");
662         ffmpeg_exit(1);
663     }
664     ost->file_index = file_idx;
665     ost->index = idx;
666     return ost;
667 }
668
669 static int read_ffserver_streams(AVFormatContext *s, const char *filename)
670 {
671     int i, err;
672     AVFormatContext *ic;
673     int nopts = 0;
674
675     err = av_open_input_file(&ic, filename, NULL, FFM_PACKET_SIZE, NULL);
676     if (err < 0)
677         return err;
678     /* copy stream format */
679     s->nb_streams = 0;
680     for(i=0;i<ic->nb_streams;i++) {
681         AVStream *st;
682         AVCodec *codec;
683
684         s->nb_streams++;
685
686         // FIXME: a more elegant solution is needed
687         st = av_mallocz(sizeof(AVStream));
688         memcpy(st, ic->streams[i], sizeof(AVStream));
689         st->codec = avcodec_alloc_context();
690         if (!st->codec) {
691             print_error(filename, AVERROR(ENOMEM));
692             ffmpeg_exit(1);
693         }
694         avcodec_copy_context(st->codec, ic->streams[i]->codec);
695         s->streams[i] = st;
696
697         codec = avcodec_find_encoder(st->codec->codec_id);
698         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
699             if (audio_stream_copy) {
700                 st->stream_copy = 1;
701             } else
702                 choose_sample_fmt(st, codec);
703         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
704             if (video_stream_copy) {
705                 st->stream_copy = 1;
706             } else
707                 choose_pixel_fmt(st, codec);
708         }
709
710         if(!st->codec->thread_count)
711             st->codec->thread_count = 1;
712         if(st->codec->thread_count>1)
713             avcodec_thread_init(st->codec, st->codec->thread_count);
714
715         if(st->codec->flags & CODEC_FLAG_BITEXACT)
716             nopts = 1;
717
718         new_output_stream(s, nb_output_files);
719     }
720
721     if (!nopts)
722         s->timestamp = av_gettime();
723
724     av_close_input_file(ic);
725     return 0;
726 }
727
728 static double
729 get_sync_ipts(const AVOutputStream *ost)
730 {
731     const AVInputStream *ist = ost->sync_ist;
732     return (double)(ist->pts - start_time)/AV_TIME_BASE;
733 }
734
735 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
736     int ret;
737
738     while(bsfc){
739         AVPacket new_pkt= *pkt;
740         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
741                                           &new_pkt.data, &new_pkt.size,
742                                           pkt->data, pkt->size,
743                                           pkt->flags & AV_PKT_FLAG_KEY);
744         if(a>0){
745             av_free_packet(pkt);
746             new_pkt.destruct= av_destruct_packet;
747         } else if(a<0){
748             fprintf(stderr, "%s failed for stream %d, codec %s",
749                     bsfc->filter->name, pkt->stream_index,
750                     avctx->codec ? avctx->codec->name : "copy");
751             print_error("", a);
752             if (exit_on_error)
753                 ffmpeg_exit(1);
754         }
755         *pkt= new_pkt;
756
757         bsfc= bsfc->next;
758     }
759
760     ret= av_interleaved_write_frame(s, pkt);
761     if(ret < 0){
762         print_error("av_interleaved_write_frame()", ret);
763         ffmpeg_exit(1);
764     }
765 }
766
767 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
768
769 static void do_audio_out(AVFormatContext *s,
770                          AVOutputStream *ost,
771                          AVInputStream *ist,
772                          unsigned char *buf, int size)
773 {
774     uint8_t *buftmp;
775     int64_t audio_out_size, audio_buf_size;
776     int64_t allocated_for_size= size;
777
778     int size_out, frame_bytes, ret, resample_changed;
779     AVCodecContext *enc= ost->st->codec;
780     AVCodecContext *dec= ist->st->codec;
781     int osize= av_get_bits_per_sample_fmt(enc->sample_fmt)/8;
782     int isize= av_get_bits_per_sample_fmt(dec->sample_fmt)/8;
783     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
784
785 need_realloc:
786     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
787     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
788     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
789     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
790     audio_buf_size*= osize*enc->channels;
791
792     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
793     if(coded_bps > 8*osize)
794         audio_out_size= audio_out_size * coded_bps / (8*osize);
795     audio_out_size += FF_MIN_BUFFER_SIZE;
796
797     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
798         fprintf(stderr, "Buffer sizes too large\n");
799         ffmpeg_exit(1);
800     }
801
802     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
803     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
804     if (!audio_buf || !audio_out){
805         fprintf(stderr, "Out of memory in do_audio_out\n");
806         ffmpeg_exit(1);
807     }
808
809     if (enc->channels != dec->channels)
810         ost->audio_resample = 1;
811
812     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
813                        ost->resample_channels    != dec->channels   ||
814                        ost->resample_sample_rate != dec->sample_rate;
815
816     if ((ost->audio_resample && !ost->resample) || resample_changed) {
817         if (resample_changed) {
818             av_log(NULL, AV_LOG_INFO, "Input stream #%d.%d frame changed from rate:%d fmt:%s ch:%d to rate:%d fmt:%s ch:%d\n",
819                    ist->file_index, ist->index,
820                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
821                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
822             ost->resample_sample_fmt  = dec->sample_fmt;
823             ost->resample_channels    = dec->channels;
824             ost->resample_sample_rate = dec->sample_rate;
825             if (ost->resample)
826                 audio_resample_close(ost->resample);
827         }
828         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
829         if (audio_sync_method <= 1 &&
830             ost->resample_sample_fmt  == enc->sample_fmt &&
831             ost->resample_channels    == enc->channels   &&
832             ost->resample_sample_rate == enc->sample_rate) {
833             ost->resample = NULL;
834             ost->audio_resample = 0;
835         } else {
836             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
837                 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
838             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
839                                                    enc->sample_rate, dec->sample_rate,
840                                                    enc->sample_fmt,  dec->sample_fmt,
841                                                    16, 10, 0, 0.8);
842             if (!ost->resample) {
843                 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
844                         dec->channels, dec->sample_rate,
845                         enc->channels, enc->sample_rate);
846                 ffmpeg_exit(1);
847             }
848         }
849     }
850
851 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
852     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
853         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
854         if (ost->reformat_ctx)
855             av_audio_convert_free(ost->reformat_ctx);
856         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
857                                                    dec->sample_fmt, 1, NULL, 0);
858         if (!ost->reformat_ctx) {
859             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
860                 av_get_sample_fmt_name(dec->sample_fmt),
861                 av_get_sample_fmt_name(enc->sample_fmt));
862             ffmpeg_exit(1);
863         }
864         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
865     }
866
867     if(audio_sync_method){
868         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
869                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
870         double idelta= delta*dec->sample_rate / enc->sample_rate;
871         int byte_delta= ((int)idelta)*2*dec->channels;
872
873         //FIXME resample delay
874         if(fabs(delta) > 50){
875             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
876                 if(byte_delta < 0){
877                     byte_delta= FFMAX(byte_delta, -size);
878                     size += byte_delta;
879                     buf  -= byte_delta;
880                     if(verbose > 2)
881                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
882                     if(!size)
883                         return;
884                     ist->is_start=0;
885                 }else{
886                     static uint8_t *input_tmp= NULL;
887                     input_tmp= av_realloc(input_tmp, byte_delta + size);
888
889                     if(byte_delta > allocated_for_size - size){
890                         allocated_for_size= byte_delta + (int64_t)size;
891                         goto need_realloc;
892                     }
893                     ist->is_start=0;
894
895                     memset(input_tmp, 0, byte_delta);
896                     memcpy(input_tmp + byte_delta, buf, size);
897                     buf= input_tmp;
898                     size += byte_delta;
899                     if(verbose > 2)
900                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
901                 }
902             }else if(audio_sync_method>1){
903                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
904                 av_assert0(ost->audio_resample);
905                 if(verbose > 2)
906                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
907 //                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));
908                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
909             }
910         }
911     }else
912         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
913                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
914
915     if (ost->audio_resample) {
916         buftmp = audio_buf;
917         size_out = audio_resample(ost->resample,
918                                   (short *)buftmp, (short *)buf,
919                                   size / (dec->channels * isize));
920         size_out = size_out * enc->channels * osize;
921     } else {
922         buftmp = buf;
923         size_out = size;
924     }
925
926     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
927         const void *ibuf[6]= {buftmp};
928         void *obuf[6]= {audio_buf};
929         int istride[6]= {isize};
930         int ostride[6]= {osize};
931         int len= size_out/istride[0];
932         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
933             printf("av_audio_convert() failed\n");
934             if (exit_on_error)
935                 ffmpeg_exit(1);
936             return;
937         }
938         buftmp = audio_buf;
939         size_out = len*osize;
940     }
941
942     /* now encode as many frames as possible */
943     if (enc->frame_size > 1) {
944         /* output resampled raw samples */
945         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
946             fprintf(stderr, "av_fifo_realloc2() failed\n");
947             ffmpeg_exit(1);
948         }
949         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
950
951         frame_bytes = enc->frame_size * osize * enc->channels;
952
953         while (av_fifo_size(ost->fifo) >= frame_bytes) {
954             AVPacket pkt;
955             av_init_packet(&pkt);
956
957             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
958
959             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
960
961             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
962                                        (short *)audio_buf);
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             ost->sync_opts += enc->frame_size;
977         }
978     } else {
979         AVPacket pkt;
980         av_init_packet(&pkt);
981
982         ost->sync_opts += size_out / (osize * enc->channels);
983
984         /* output a pcm frame */
985         /* determine the size of the coded buffer */
986         size_out /= osize;
987         if (coded_bps)
988             size_out = size_out*coded_bps/8;
989
990         if(size_out > audio_out_size){
991             fprintf(stderr, "Internal error, buffer size too small\n");
992             ffmpeg_exit(1);
993         }
994
995         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
996         ret = avcodec_encode_audio(enc, audio_out, size_out,
997                                    (short *)buftmp);
998         if (ret < 0) {
999             fprintf(stderr, "Audio encoding failed\n");
1000             ffmpeg_exit(1);
1001         }
1002         audio_size += ret;
1003         pkt.stream_index= ost->index;
1004         pkt.data= audio_out;
1005         pkt.size= ret;
1006         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1007             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1008         pkt.flags |= AV_PKT_FLAG_KEY;
1009         write_frame(s, &pkt, enc, ost->bitstream_filters);
1010     }
1011 }
1012
1013 static void pre_process_video_frame(AVInputStream *ist, AVPicture *picture, void **bufp)
1014 {
1015     AVCodecContext *dec;
1016     AVPicture *picture2;
1017     AVPicture picture_tmp;
1018     uint8_t *buf = 0;
1019
1020     dec = ist->st->codec;
1021
1022     /* deinterlace : must be done before any resize */
1023     if (do_deinterlace) {
1024         int size;
1025
1026         /* create temporary picture */
1027         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1028         buf = av_malloc(size);
1029         if (!buf)
1030             return;
1031
1032         picture2 = &picture_tmp;
1033         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1034
1035         if(avpicture_deinterlace(picture2, picture,
1036                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1037             /* if error, do not deinterlace */
1038             fprintf(stderr, "Deinterlacing failed\n");
1039             av_free(buf);
1040             buf = NULL;
1041             picture2 = picture;
1042         }
1043     } else {
1044         picture2 = picture;
1045     }
1046
1047     if (picture != picture2)
1048         *picture = *picture2;
1049     *bufp = buf;
1050 }
1051
1052 /* we begin to correct av delay at this threshold */
1053 #define AV_DELAY_MAX 0.100
1054
1055 static void do_subtitle_out(AVFormatContext *s,
1056                             AVOutputStream *ost,
1057                             AVInputStream *ist,
1058                             AVSubtitle *sub,
1059                             int64_t pts)
1060 {
1061     static uint8_t *subtitle_out = NULL;
1062     int subtitle_out_max_size = 1024 * 1024;
1063     int subtitle_out_size, nb, i;
1064     AVCodecContext *enc;
1065     AVPacket pkt;
1066
1067     if (pts == AV_NOPTS_VALUE) {
1068         fprintf(stderr, "Subtitle packets must have a pts\n");
1069         if (exit_on_error)
1070             ffmpeg_exit(1);
1071         return;
1072     }
1073
1074     enc = ost->st->codec;
1075
1076     if (!subtitle_out) {
1077         subtitle_out = av_malloc(subtitle_out_max_size);
1078     }
1079
1080     /* Note: DVB subtitle need one packet to draw them and one other
1081        packet to clear them */
1082     /* XXX: signal it in the codec context ? */
1083     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1084         nb = 2;
1085     else
1086         nb = 1;
1087
1088     for(i = 0; i < nb; i++) {
1089         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1090         // start_display_time is required to be 0
1091         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1092         sub->end_display_time -= sub->start_display_time;
1093         sub->start_display_time = 0;
1094         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1095                                                     subtitle_out_max_size, sub);
1096         if (subtitle_out_size < 0) {
1097             fprintf(stderr, "Subtitle encoding failed\n");
1098             ffmpeg_exit(1);
1099         }
1100
1101         av_init_packet(&pkt);
1102         pkt.stream_index = ost->index;
1103         pkt.data = subtitle_out;
1104         pkt.size = subtitle_out_size;
1105         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1106         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1107             /* XXX: the pts correction is handled here. Maybe handling
1108                it in the codec would be better */
1109             if (i == 0)
1110                 pkt.pts += 90 * sub->start_display_time;
1111             else
1112                 pkt.pts += 90 * sub->end_display_time;
1113         }
1114         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1115     }
1116 }
1117
1118 static int bit_buffer_size= 1024*256;
1119 static uint8_t *bit_buffer= NULL;
1120
1121 static void do_video_out(AVFormatContext *s,
1122                          AVOutputStream *ost,
1123                          AVInputStream *ist,
1124                          AVFrame *in_picture,
1125                          int *frame_size)
1126 {
1127     int nb_frames, i, ret;
1128     AVFrame *final_picture, *formatted_picture, *resampling_dst, *padding_src;
1129     AVCodecContext *enc, *dec;
1130     double sync_ipts;
1131
1132     enc = ost->st->codec;
1133     dec = ist->st->codec;
1134
1135     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1136
1137     /* by default, we output a single frame */
1138     nb_frames = 1;
1139
1140     *frame_size = 0;
1141
1142     if(video_sync_method){
1143         double vdelta = sync_ipts - ost->sync_opts;
1144         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1145         if (vdelta < -1.1)
1146             nb_frames = 0;
1147         else if (video_sync_method == 2 || (video_sync_method<0 && (s->oformat->flags & AVFMT_VARIABLE_FPS))){
1148             if(vdelta<=-0.6){
1149                 nb_frames=0;
1150             }else if(vdelta>0.6)
1151                 ost->sync_opts= lrintf(sync_ipts);
1152         }else if (vdelta > 1.1)
1153             nb_frames = lrintf(vdelta);
1154 //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);
1155         if (nb_frames == 0){
1156             ++nb_frames_drop;
1157             if (verbose>2)
1158                 fprintf(stderr, "*** drop!\n");
1159         }else if (nb_frames > 1) {
1160             nb_frames_dup += nb_frames - 1;
1161             if (verbose>2)
1162                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1163         }
1164     }else
1165         ost->sync_opts= lrintf(sync_ipts);
1166
1167     nb_frames= FFMIN(nb_frames, max_frames[AVMEDIA_TYPE_VIDEO] - ost->frame_number);
1168     if (nb_frames <= 0)
1169         return;
1170
1171     formatted_picture = in_picture;
1172     final_picture = formatted_picture;
1173     padding_src = formatted_picture;
1174     resampling_dst = &ost->pict_tmp;
1175
1176     if (   ost->resample_height != ist->st->codec->height
1177         || ost->resample_width  != ist->st->codec->width
1178         || (ost->resample_pix_fmt!= ist->st->codec->pix_fmt) ) {
1179
1180         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));
1181         if(!ost->video_resample)
1182             ffmpeg_exit(1);
1183     }
1184
1185 #if !CONFIG_AVFILTER
1186     if (ost->video_resample) {
1187         padding_src = NULL;
1188         final_picture = &ost->pict_tmp;
1189         if(  ost->resample_height != ist->st->codec->height
1190           || ost->resample_width  != ist->st->codec->width
1191           || (ost->resample_pix_fmt!= ist->st->codec->pix_fmt) ) {
1192
1193             /* initialize a new scaler context */
1194             sws_freeContext(ost->img_resample_ctx);
1195             sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
1196             ost->img_resample_ctx = sws_getContext(
1197                 ist->st->codec->width,
1198                 ist->st->codec->height,
1199                 ist->st->codec->pix_fmt,
1200                 ost->st->codec->width,
1201                 ost->st->codec->height,
1202                 ost->st->codec->pix_fmt,
1203                 sws_flags, NULL, NULL, NULL);
1204             if (ost->img_resample_ctx == NULL) {
1205                 fprintf(stderr, "Cannot get resampling context\n");
1206                 ffmpeg_exit(1);
1207             }
1208         }
1209         sws_scale(ost->img_resample_ctx, formatted_picture->data, formatted_picture->linesize,
1210               0, ost->resample_height, resampling_dst->data, resampling_dst->linesize);
1211     }
1212 #endif
1213
1214     /* duplicates frame if needed */
1215     for(i=0;i<nb_frames;i++) {
1216         AVPacket pkt;
1217         av_init_packet(&pkt);
1218         pkt.stream_index= ost->index;
1219
1220         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1221             /* raw pictures are written as AVPicture structure to
1222                avoid any copies. We support temorarily the older
1223                method. */
1224             AVFrame* old_frame = enc->coded_frame;
1225             enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
1226             pkt.data= (uint8_t *)final_picture;
1227             pkt.size=  sizeof(AVPicture);
1228             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1229             pkt.flags |= AV_PKT_FLAG_KEY;
1230
1231             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1232             enc->coded_frame = old_frame;
1233         } else {
1234             AVFrame big_picture;
1235
1236             big_picture= *final_picture;
1237             /* better than nothing: use input picture interlaced
1238                settings */
1239             big_picture.interlaced_frame = in_picture->interlaced_frame;
1240             if(avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)){
1241                 if(top_field_first == -1)
1242                     big_picture.top_field_first = in_picture->top_field_first;
1243                 else
1244                     big_picture.top_field_first = top_field_first;
1245             }
1246
1247             /* handles sameq here. This is not correct because it may
1248                not be a global option */
1249             big_picture.quality = same_quality ? ist->st->quality : ost->st->quality;
1250             if(!me_threshold)
1251                 big_picture.pict_type = 0;
1252 //            big_picture.pts = AV_NOPTS_VALUE;
1253             big_picture.pts= ost->sync_opts;
1254 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1255 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1256             if (ost->forced_kf_index < ost->forced_kf_count &&
1257                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1258                 big_picture.pict_type = FF_I_TYPE;
1259                 ost->forced_kf_index++;
1260             }
1261             ret = avcodec_encode_video(enc,
1262                                        bit_buffer, bit_buffer_size,
1263                                        &big_picture);
1264             if (ret < 0) {
1265                 fprintf(stderr, "Video encoding failed\n");
1266                 ffmpeg_exit(1);
1267             }
1268
1269             if(ret>0){
1270                 pkt.data= bit_buffer;
1271                 pkt.size= ret;
1272                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1273                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1274 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1275    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1276    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1277
1278                 if(enc->coded_frame->key_frame)
1279                     pkt.flags |= AV_PKT_FLAG_KEY;
1280                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1281                 *frame_size = ret;
1282                 video_size += ret;
1283                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1284                 //        enc->frame_number-1, ret, enc->pict_type);
1285                 /* if two pass, output log */
1286                 if (ost->logfile && enc->stats_out) {
1287                     fprintf(ost->logfile, "%s", enc->stats_out);
1288                 }
1289             }
1290         }
1291         ost->sync_opts++;
1292         ost->frame_number++;
1293     }
1294 }
1295
1296 static double psnr(double d){
1297     return -10.0*log(d)/log(10.0);
1298 }
1299
1300 static void do_video_stats(AVFormatContext *os, AVOutputStream *ost,
1301                            int frame_size)
1302 {
1303     AVCodecContext *enc;
1304     int frame_number;
1305     double ti1, bitrate, avg_bitrate;
1306
1307     /* this is executed just the first time do_video_stats is called */
1308     if (!vstats_file) {
1309         vstats_file = fopen(vstats_filename, "w");
1310         if (!vstats_file) {
1311             perror("fopen");
1312             ffmpeg_exit(1);
1313         }
1314     }
1315
1316     enc = ost->st->codec;
1317     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1318         frame_number = ost->frame_number;
1319         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1320         if (enc->flags&CODEC_FLAG_PSNR)
1321             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1322
1323         fprintf(vstats_file,"f_size= %6d ", frame_size);
1324         /* compute pts value */
1325         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1326         if (ti1 < 0.01)
1327             ti1 = 0.01;
1328
1329         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1330         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1331         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1332             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1333         fprintf(vstats_file,"type= %c\n", av_get_pict_type_char(enc->coded_frame->pict_type));
1334     }
1335 }
1336
1337 static void print_report(AVFormatContext **output_files,
1338                          AVOutputStream **ost_table, int nb_ostreams,
1339                          int is_last_report)
1340 {
1341     char buf[1024];
1342     AVOutputStream *ost;
1343     AVFormatContext *oc;
1344     int64_t total_size;
1345     AVCodecContext *enc;
1346     int frame_number, vid, i;
1347     double bitrate, ti1, pts;
1348     static int64_t last_time = -1;
1349     static int qp_histogram[52];
1350
1351     if (!is_last_report) {
1352         int64_t cur_time;
1353         /* display the report every 0.5 seconds */
1354         cur_time = av_gettime();
1355         if (last_time == -1) {
1356             last_time = cur_time;
1357             return;
1358         }
1359         if ((cur_time - last_time) < 500000)
1360             return;
1361         last_time = cur_time;
1362     }
1363
1364
1365     oc = output_files[0];
1366
1367     total_size = url_fsize(oc->pb);
1368     if(total_size<0) // FIXME improve url_fsize() so it works with non seekable output too
1369         total_size= url_ftell(oc->pb);
1370
1371     buf[0] = '\0';
1372     ti1 = 1e10;
1373     vid = 0;
1374     for(i=0;i<nb_ostreams;i++) {
1375         ost = ost_table[i];
1376         enc = ost->st->codec;
1377         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1378             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ",
1379                      !ost->st->stream_copy ?
1380                      enc->coded_frame->quality/(float)FF_QP2LAMBDA : -1);
1381         }
1382         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1383             float t = (av_gettime()-timer_start) / 1000000.0;
1384
1385             frame_number = ost->frame_number;
1386             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1387                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0,
1388                      !ost->st->stream_copy ?
1389                      enc->coded_frame->quality/(float)FF_QP2LAMBDA : -1);
1390             if(is_last_report)
1391                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1392             if(qp_hist){
1393                 int j;
1394                 int qp= lrintf(enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1395                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1396                     qp_histogram[qp]++;
1397                 for(j=0; j<32; j++)
1398                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1399             }
1400             if (enc->flags&CODEC_FLAG_PSNR){
1401                 int j;
1402                 double error, error_sum=0;
1403                 double scale, scale_sum=0;
1404                 char type[3]= {'Y','U','V'};
1405                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1406                 for(j=0; j<3; j++){
1407                     if(is_last_report){
1408                         error= enc->error[j];
1409                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1410                     }else{
1411                         error= enc->coded_frame->error[j];
1412                         scale= enc->width*enc->height*255.0*255.0;
1413                     }
1414                     if(j) scale/=4;
1415                     error_sum += error;
1416                     scale_sum += scale;
1417                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1418                 }
1419                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1420             }
1421             vid = 1;
1422         }
1423         /* compute min output value */
1424         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1425         if ((pts < ti1) && (pts > 0))
1426             ti1 = pts;
1427     }
1428     if (ti1 < 0.01)
1429         ti1 = 0.01;
1430
1431     if (verbose || is_last_report) {
1432         bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1433
1434         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1435             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1436             (double)total_size / 1024, ti1, bitrate);
1437
1438         if (nb_frames_dup || nb_frames_drop)
1439           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1440                   nb_frames_dup, nb_frames_drop);
1441
1442         if (verbose >= 0)
1443             fprintf(stderr, "%s    \r", buf);
1444
1445         fflush(stderr);
1446     }
1447
1448     if (is_last_report && verbose >= 0){
1449         int64_t raw= audio_size + video_size + extra_size;
1450         fprintf(stderr, "\n");
1451         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1452                 video_size/1024.0,
1453                 audio_size/1024.0,
1454                 extra_size/1024.0,
1455                 100.0*(total_size - raw)/raw
1456         );
1457     }
1458 }
1459
1460 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1461 static int output_packet(AVInputStream *ist, int ist_index,
1462                          AVOutputStream **ost_table, int nb_ostreams,
1463                          const AVPacket *pkt)
1464 {
1465     AVFormatContext *os;
1466     AVOutputStream *ost;
1467     int ret, i;
1468     int got_picture;
1469     AVFrame picture;
1470     void *buffer_to_free;
1471     static unsigned int samples_size= 0;
1472     AVSubtitle subtitle, *subtitle_to_free;
1473     int64_t pkt_pts = AV_NOPTS_VALUE;
1474 #if CONFIG_AVFILTER
1475     int frame_available;
1476 #endif
1477
1478     AVPacket avpkt;
1479     int bps = av_get_bits_per_sample_fmt(ist->st->codec->sample_fmt)>>3;
1480
1481     if(ist->next_pts == AV_NOPTS_VALUE)
1482         ist->next_pts= ist->pts;
1483
1484     if (pkt == NULL) {
1485         /* EOF handling */
1486         av_init_packet(&avpkt);
1487         avpkt.data = NULL;
1488         avpkt.size = 0;
1489         goto handle_eof;
1490     } else {
1491         avpkt = *pkt;
1492     }
1493
1494     if(pkt->dts != AV_NOPTS_VALUE)
1495         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1496     if(pkt->pts != AV_NOPTS_VALUE)
1497         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1498
1499     //while we have more to decode or while the decoder did output something on EOF
1500     while (avpkt.size > 0 || (!pkt && ist->next_pts != ist->pts)) {
1501         uint8_t *data_buf, *decoded_data_buf;
1502         int data_size, decoded_data_size;
1503     handle_eof:
1504         ist->pts= ist->next_pts;
1505
1506         if(avpkt.size && avpkt.size != pkt->size &&
1507            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1508             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1509             ist->showed_multi_packet_warning=1;
1510         }
1511
1512         /* decode the packet if needed */
1513         decoded_data_buf = NULL; /* fail safe */
1514         decoded_data_size= 0;
1515         data_buf  = avpkt.data;
1516         data_size = avpkt.size;
1517         subtitle_to_free = NULL;
1518         if (ist->decoding_needed) {
1519             switch(ist->st->codec->codec_type) {
1520             case AVMEDIA_TYPE_AUDIO:{
1521                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1522                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1523                     av_free(samples);
1524                     samples= av_malloc(samples_size);
1525                 }
1526                 decoded_data_size= samples_size;
1527                     /* XXX: could avoid copy if PCM 16 bits with same
1528                        endianness as CPU */
1529                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1530                                             &avpkt);
1531                 if (ret < 0)
1532                     goto fail_decode;
1533                 avpkt.data += ret;
1534                 avpkt.size -= ret;
1535                 data_size   = ret;
1536                 /* Some bug in mpeg audio decoder gives */
1537                 /* decoded_data_size < 0, it seems they are overflows */
1538                 if (decoded_data_size <= 0) {
1539                     /* no audio frame */
1540                     continue;
1541                 }
1542                 decoded_data_buf = (uint8_t *)samples;
1543                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1544                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1545                 break;}
1546             case AVMEDIA_TYPE_VIDEO:
1547                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1548                     /* XXX: allocate picture correctly */
1549                     avcodec_get_frame_defaults(&picture);
1550                     avpkt.pts = pkt_pts;
1551                     avpkt.dts = ist->pts;
1552                     pkt_pts = AV_NOPTS_VALUE;
1553
1554                     ret = avcodec_decode_video2(ist->st->codec,
1555                                                 &picture, &got_picture, &avpkt);
1556                     ist->st->quality= picture.quality;
1557                     if (ret < 0)
1558                         goto fail_decode;
1559                     if (!got_picture) {
1560                         /* no picture yet */
1561                         goto discard_packet;
1562                     }
1563                     ist->next_pts = ist->pts = picture.best_effort_timestamp;
1564                     if (ist->st->codec->time_base.num != 0) {
1565                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1566                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1567                                           ist->st->codec->time_base.num * ticks) /
1568                             ist->st->codec->time_base.den;
1569                     }
1570                     avpkt.size = 0;
1571                     break;
1572             case AVMEDIA_TYPE_SUBTITLE:
1573                 ret = avcodec_decode_subtitle2(ist->st->codec,
1574                                                &subtitle, &got_picture, &avpkt);
1575                 if (ret < 0)
1576                     goto fail_decode;
1577                 if (!got_picture) {
1578                     goto discard_packet;
1579                 }
1580                 subtitle_to_free = &subtitle;
1581                 avpkt.size = 0;
1582                 break;
1583             default:
1584                 goto fail_decode;
1585             }
1586         } else {
1587             switch(ist->st->codec->codec_type) {
1588             case AVMEDIA_TYPE_AUDIO:
1589                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1590                     ist->st->codec->sample_rate;
1591                 break;
1592             case AVMEDIA_TYPE_VIDEO:
1593                 if (ist->st->codec->time_base.num != 0) {
1594                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1595                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1596                                       ist->st->codec->time_base.num * ticks) /
1597                         ist->st->codec->time_base.den;
1598                 }
1599                 break;
1600             }
1601             ret = avpkt.size;
1602             avpkt.size = 0;
1603         }
1604
1605         buffer_to_free = NULL;
1606         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1607             pre_process_video_frame(ist, (AVPicture *)&picture,
1608                                     &buffer_to_free);
1609         }
1610
1611 #if CONFIG_AVFILTER
1612         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ist->input_video_filter) {
1613             AVRational sar;
1614             if (ist->st->sample_aspect_ratio.num) sar = ist->st->sample_aspect_ratio;
1615             else                                  sar = ist->st->codec->sample_aspect_ratio;
1616             // add it to be filtered
1617             av_vsrc_buffer_add_frame(ist->input_video_filter, &picture,
1618                                      ist->pts,
1619                                      sar);
1620         }
1621 #endif
1622
1623         // preprocess audio (volume)
1624         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1625             if (audio_volume != 256) {
1626                 short *volp;
1627                 volp = samples;
1628                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1629                     int v = ((*volp) * audio_volume + 128) >> 8;
1630                     if (v < -32768) v = -32768;
1631                     if (v >  32767) v = 32767;
1632                     *volp++ = v;
1633                 }
1634             }
1635         }
1636
1637         /* frame rate emulation */
1638         if (rate_emu) {
1639             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1640             int64_t now = av_gettime() - ist->start;
1641             if (pts > now)
1642                 usleep(pts - now);
1643         }
1644 #if CONFIG_AVFILTER
1645         frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1646             !ist->output_video_filter || avfilter_poll_frame(ist->output_video_filter->inputs[0]);
1647 #endif
1648         /* if output time reached then transcode raw format,
1649            encode packets and output them */
1650         if (start_time == 0 || ist->pts >= start_time)
1651 #if CONFIG_AVFILTER
1652         while (frame_available) {
1653             AVRational ist_pts_tb;
1654             if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ist->output_video_filter)
1655                 get_filtered_video_frame(ist->output_video_filter, &picture, &ist->picref, &ist_pts_tb);
1656             if (ist->picref)
1657                 ist->pts = av_rescale_q(ist->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1658 #endif
1659             for(i=0;i<nb_ostreams;i++) {
1660                 int frame_size;
1661
1662                 ost = ost_table[i];
1663                 if (ost->source_index == ist_index) {
1664                     os = output_files[ost->file_index];
1665
1666                     /* set the input output pts pairs */
1667                     //ost->sync_ipts = (double)(ist->pts + input_files_ts_offset[ist->file_index] - start_time)/ AV_TIME_BASE;
1668
1669                     if (ost->encoding_needed) {
1670                         av_assert0(ist->decoding_needed);
1671                         switch(ost->st->codec->codec_type) {
1672                         case AVMEDIA_TYPE_AUDIO:
1673                             do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1674                             break;
1675                         case AVMEDIA_TYPE_VIDEO:
1676 #if CONFIG_AVFILTER
1677                             if (ist->picref->video)
1678                                 ost->st->codec->sample_aspect_ratio = ist->picref->video->pixel_aspect;
1679 #endif
1680                             do_video_out(os, ost, ist, &picture, &frame_size);
1681                             if (vstats_filename && frame_size)
1682                                 do_video_stats(os, ost, frame_size);
1683                             break;
1684                         case AVMEDIA_TYPE_SUBTITLE:
1685                             do_subtitle_out(os, ost, ist, &subtitle,
1686                                             pkt->pts);
1687                             break;
1688                         default:
1689                             abort();
1690                         }
1691                     } else {
1692                         AVFrame avframe; //FIXME/XXX remove this
1693                         AVPacket opkt;
1694                         int64_t ost_tb_start_time= av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1695
1696                         av_init_packet(&opkt);
1697
1698                         if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1699                             continue;
1700
1701                         /* no reencoding needed : output the packet directly */
1702                         /* force the input stream PTS */
1703
1704                         avcodec_get_frame_defaults(&avframe);
1705                         ost->st->codec->coded_frame= &avframe;
1706                         avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1707
1708                         if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1709                             audio_size += data_size;
1710                         else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1711                             video_size += data_size;
1712                             ost->sync_opts++;
1713                         }
1714
1715                         opkt.stream_index= ost->index;
1716                         if(pkt->pts != AV_NOPTS_VALUE)
1717                             opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1718                         else
1719                             opkt.pts= AV_NOPTS_VALUE;
1720
1721                         if (pkt->dts == AV_NOPTS_VALUE)
1722                             opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1723                         else
1724                             opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1725                         opkt.dts -= ost_tb_start_time;
1726
1727                         opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1728                         opkt.flags= pkt->flags;
1729
1730                         //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1731                         if(   ost->st->codec->codec_id != CODEC_ID_H264
1732                            && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1733                            && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1734                            ) {
1735                             if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1736                                 opkt.destruct= av_destruct_packet;
1737                         } else {
1738                             opkt.data = data_buf;
1739                             opkt.size = data_size;
1740                         }
1741
1742                         write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1743                         ost->st->codec->frame_number++;
1744                         ost->frame_number++;
1745                         av_free_packet(&opkt);
1746                     }
1747                 }
1748             }
1749
1750 #if CONFIG_AVFILTER
1751             frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1752                               ist->output_video_filter && avfilter_poll_frame(ist->output_video_filter->inputs[0]);
1753             if(ist->picref)
1754                 avfilter_unref_buffer(ist->picref);
1755         }
1756 #endif
1757         av_free(buffer_to_free);
1758         /* XXX: allocate the subtitles in the codec ? */
1759         if (subtitle_to_free) {
1760             avsubtitle_free(subtitle_to_free);
1761             subtitle_to_free = NULL;
1762         }
1763     }
1764  discard_packet:
1765     if (pkt == NULL) {
1766         /* EOF handling */
1767
1768         for(i=0;i<nb_ostreams;i++) {
1769             ost = ost_table[i];
1770             if (ost->source_index == ist_index) {
1771                 AVCodecContext *enc= ost->st->codec;
1772                 os = output_files[ost->file_index];
1773
1774                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1775                     continue;
1776                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1777                     continue;
1778
1779                 if (ost->encoding_needed) {
1780                     for(;;) {
1781                         AVPacket pkt;
1782                         int fifo_bytes;
1783                         av_init_packet(&pkt);
1784                         pkt.stream_index= ost->index;
1785
1786                         switch(ost->st->codec->codec_type) {
1787                         case AVMEDIA_TYPE_AUDIO:
1788                             fifo_bytes = av_fifo_size(ost->fifo);
1789                             ret = 0;
1790                             /* encode any samples remaining in fifo */
1791                             if (fifo_bytes > 0) {
1792                                 int osize = av_get_bits_per_sample_fmt(enc->sample_fmt) >> 3;
1793                                 int fs_tmp = enc->frame_size;
1794
1795                                 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1796                                 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1797                                     enc->frame_size = fifo_bytes / (osize * enc->channels);
1798                                 } else { /* pad */
1799                                     int frame_bytes = enc->frame_size*osize*enc->channels;
1800                                     if (allocated_audio_buf_size < frame_bytes)
1801                                         ffmpeg_exit(1);
1802                                     memset(audio_buf+fifo_bytes, 0, frame_bytes - fifo_bytes);
1803                                 }
1804
1805                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1806                                 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1807                                                           ost->st->time_base.num, enc->sample_rate);
1808                                 enc->frame_size = fs_tmp;
1809                             }
1810                             if(ret <= 0) {
1811                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1812                             }
1813                             if (ret < 0) {
1814                                 fprintf(stderr, "Audio encoding failed\n");
1815                                 ffmpeg_exit(1);
1816                             }
1817                             audio_size += ret;
1818                             pkt.flags |= AV_PKT_FLAG_KEY;
1819                             break;
1820                         case AVMEDIA_TYPE_VIDEO:
1821                             ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1822                             if (ret < 0) {
1823                                 fprintf(stderr, "Video encoding failed\n");
1824                                 ffmpeg_exit(1);
1825                             }
1826                             video_size += ret;
1827                             if(enc->coded_frame && enc->coded_frame->key_frame)
1828                                 pkt.flags |= AV_PKT_FLAG_KEY;
1829                             if (ost->logfile && enc->stats_out) {
1830                                 fprintf(ost->logfile, "%s", enc->stats_out);
1831                             }
1832                             break;
1833                         default:
1834                             ret=-1;
1835                         }
1836
1837                         if(ret<=0)
1838                             break;
1839                         pkt.data= bit_buffer;
1840                         pkt.size= ret;
1841                         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1842                             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1843                         write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1844                     }
1845                 }
1846             }
1847         }
1848     }
1849
1850     return 0;
1851  fail_decode:
1852     return -1;
1853 }
1854
1855 static void print_sdp(AVFormatContext **avc, int n)
1856 {
1857     char sdp[2048];
1858
1859     avf_sdp_create(avc, n, sdp, sizeof(sdp));
1860     printf("SDP:\n%s\n", sdp);
1861     fflush(stdout);
1862 }
1863
1864 static int copy_chapters(int infile, int outfile)
1865 {
1866     AVFormatContext *is = input_files[infile];
1867     AVFormatContext *os = output_files[outfile];
1868     int i;
1869
1870     for (i = 0; i < is->nb_chapters; i++) {
1871         AVChapter *in_ch = is->chapters[i], *out_ch;
1872         int64_t ts_off   = av_rescale_q(start_time - input_files_ts_offset[infile],
1873                                       AV_TIME_BASE_Q, in_ch->time_base);
1874         int64_t rt       = (recording_time == INT64_MAX) ? INT64_MAX :
1875                            av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
1876
1877
1878         if (in_ch->end < ts_off)
1879             continue;
1880         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
1881             break;
1882
1883         out_ch = av_mallocz(sizeof(AVChapter));
1884         if (!out_ch)
1885             return AVERROR(ENOMEM);
1886
1887         out_ch->id        = in_ch->id;
1888         out_ch->time_base = in_ch->time_base;
1889         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
1890         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
1891
1892         if (metadata_chapters_autocopy)
1893             av_metadata_copy(&out_ch->metadata, in_ch->metadata, 0);
1894
1895         os->nb_chapters++;
1896         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
1897         if (!os->chapters)
1898             return AVERROR(ENOMEM);
1899         os->chapters[os->nb_chapters - 1] = out_ch;
1900     }
1901     return 0;
1902 }
1903
1904 static void parse_forced_key_frames(char *kf, AVOutputStream *ost,
1905                                     AVCodecContext *avctx)
1906 {
1907     char *p;
1908     int n = 1, i;
1909     int64_t t;
1910
1911     for (p = kf; *p; p++)
1912         if (*p == ',')
1913             n++;
1914     ost->forced_kf_count = n;
1915     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1916     if (!ost->forced_kf_pts) {
1917         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1918         ffmpeg_exit(1);
1919     }
1920     for (i = 0; i < n; i++) {
1921         p = i ? strchr(p, ',') + 1 : kf;
1922         t = parse_time_or_die("force_key_frames", p, 1);
1923         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1924     }
1925 }
1926
1927 /*
1928  * The following code is the main loop of the file converter
1929  */
1930 static int transcode(AVFormatContext **output_files,
1931                      int nb_output_files,
1932                      AVFormatContext **input_files,
1933                      int nb_input_files,
1934                      AVStreamMap *stream_maps, int nb_stream_maps)
1935 {
1936     int ret = 0, i, j, k, n, nb_istreams = 0, nb_ostreams = 0;
1937     AVFormatContext *is, *os;
1938     AVCodecContext *codec, *icodec;
1939     AVOutputStream *ost, **ost_table = NULL;
1940     AVInputStream *ist, **ist_table = NULL;
1941     AVInputFile *file_table;
1942     char error[1024];
1943     int key;
1944     int want_sdp = 1;
1945     uint8_t no_packet[MAX_FILES]={0};
1946     int no_packet_count=0;
1947
1948     file_table= av_mallocz(nb_input_files * sizeof(AVInputFile));
1949     if (!file_table)
1950         goto fail;
1951
1952     /* input stream init */
1953     j = 0;
1954     for(i=0;i<nb_input_files;i++) {
1955         is = input_files[i];
1956         file_table[i].ist_index = j;
1957         file_table[i].nb_streams = is->nb_streams;
1958         j += is->nb_streams;
1959     }
1960     nb_istreams = j;
1961
1962     ist_table = av_mallocz(nb_istreams * sizeof(AVInputStream *));
1963     if (!ist_table)
1964         goto fail;
1965
1966     for(i=0;i<nb_istreams;i++) {
1967         ist = av_mallocz(sizeof(AVInputStream));
1968         if (!ist)
1969             goto fail;
1970         ist_table[i] = ist;
1971     }
1972     j = 0;
1973     for(i=0;i<nb_input_files;i++) {
1974         is = input_files[i];
1975         for(k=0;k<is->nb_streams;k++) {
1976             ist = ist_table[j++];
1977             ist->st = is->streams[k];
1978             ist->file_index = i;
1979             ist->index = k;
1980             ist->discard = 1; /* the stream is discarded by default
1981                                  (changed later) */
1982
1983             if (rate_emu) {
1984                 ist->start = av_gettime();
1985             }
1986         }
1987     }
1988
1989     /* output stream init */
1990     nb_ostreams = 0;
1991     for(i=0;i<nb_output_files;i++) {
1992         os = output_files[i];
1993         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1994             dump_format(output_files[i], i, output_files[i]->filename, 1);
1995             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
1996             ret = AVERROR(EINVAL);
1997             goto fail;
1998         }
1999         nb_ostreams += os->nb_streams;
2000     }
2001     if (nb_stream_maps > 0 && nb_stream_maps != nb_ostreams) {
2002         fprintf(stderr, "Number of stream maps must match number of output streams\n");
2003         ret = AVERROR(EINVAL);
2004         goto fail;
2005     }
2006
2007     /* Sanity check the mapping args -- do the input files & streams exist? */
2008     for(i=0;i<nb_stream_maps;i++) {
2009         int fi = stream_maps[i].file_index;
2010         int si = stream_maps[i].stream_index;
2011
2012         if (fi < 0 || fi > nb_input_files - 1 ||
2013             si < 0 || si > file_table[fi].nb_streams - 1) {
2014             fprintf(stderr,"Could not find input stream #%d.%d\n", fi, si);
2015             ret = AVERROR(EINVAL);
2016             goto fail;
2017         }
2018         fi = stream_maps[i].sync_file_index;
2019         si = stream_maps[i].sync_stream_index;
2020         if (fi < 0 || fi > nb_input_files - 1 ||
2021             si < 0 || si > file_table[fi].nb_streams - 1) {
2022             fprintf(stderr,"Could not find sync stream #%d.%d\n", fi, si);
2023             ret = AVERROR(EINVAL);
2024             goto fail;
2025         }
2026     }
2027
2028     ost_table = av_mallocz(sizeof(AVOutputStream *) * nb_ostreams);
2029     if (!ost_table)
2030         goto fail;
2031     n = 0;
2032     for(k=0;k<nb_output_files;k++) {
2033         os = output_files[k];
2034         for(i=0;i<os->nb_streams;i++,n++) {
2035             int found;
2036             ost = ost_table[n] = output_streams_for_file[k][i];
2037             ost->st = os->streams[i];
2038             if (nb_stream_maps > 0) {
2039                 ost->source_index = file_table[stream_maps[n].file_index].ist_index +
2040                     stream_maps[n].stream_index;
2041
2042                 /* Sanity check that the stream types match */
2043                 if (ist_table[ost->source_index]->st->codec->codec_type != ost->st->codec->codec_type) {
2044                     int i= ost->file_index;
2045                     dump_format(output_files[i], i, output_files[i]->filename, 1);
2046                     fprintf(stderr, "Codec type mismatch for mapping #%d.%d -> #%d.%d\n",
2047                         stream_maps[n].file_index, stream_maps[n].stream_index,
2048                         ost->file_index, ost->index);
2049                     ffmpeg_exit(1);
2050                 }
2051
2052             } else {
2053                 int best_nb_frames=-1;
2054                 /* get corresponding input stream index : we select the first one with the right type */
2055                 found = 0;
2056                 for(j=0;j<nb_istreams;j++) {
2057                     int skip=0;
2058                     ist = ist_table[j];
2059                     if(opt_programid){
2060                         int pi,si;
2061                         AVFormatContext *f= input_files[ ist->file_index ];
2062                         skip=1;
2063                         for(pi=0; pi<f->nb_programs; pi++){
2064                             AVProgram *p= f->programs[pi];
2065                             if(p->id == opt_programid)
2066                                 for(si=0; si<p->nb_stream_indexes; si++){
2067                                     if(f->streams[ p->stream_index[si] ] == ist->st)
2068                                         skip=0;
2069                                 }
2070                         }
2071                     }
2072                     if (ist->discard && ist->st->discard != AVDISCARD_ALL && !skip &&
2073                         ist->st->codec->codec_type == ost->st->codec->codec_type) {
2074                         if(best_nb_frames < ist->st->codec_info_nb_frames){
2075                             best_nb_frames= ist->st->codec_info_nb_frames;
2076                             ost->source_index = j;
2077                             found = 1;
2078                         }
2079                     }
2080                 }
2081
2082                 if (!found) {
2083                     if(! opt_programid) {
2084                         /* try again and reuse existing stream */
2085                         for(j=0;j<nb_istreams;j++) {
2086                             ist = ist_table[j];
2087                             if (   ist->st->codec->codec_type == ost->st->codec->codec_type
2088                                 && ist->st->discard != AVDISCARD_ALL) {
2089                                 ost->source_index = j;
2090                                 found = 1;
2091                             }
2092                         }
2093                     }
2094                     if (!found) {
2095                         int i= ost->file_index;
2096                         dump_format(output_files[i], i, output_files[i]->filename, 1);
2097                         fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",
2098                                 ost->file_index, ost->index);
2099                         ffmpeg_exit(1);
2100                     }
2101                 }
2102             }
2103             ist = ist_table[ost->source_index];
2104             ist->discard = 0;
2105             ost->sync_ist = (nb_stream_maps > 0) ?
2106                 ist_table[file_table[stream_maps[n].sync_file_index].ist_index +
2107                          stream_maps[n].sync_stream_index] : ist;
2108         }
2109     }
2110
2111     /* for each output stream, we compute the right encoding parameters */
2112     for(i=0;i<nb_ostreams;i++) {
2113         ost = ost_table[i];
2114         os = output_files[ost->file_index];
2115         ist = ist_table[ost->source_index];
2116
2117         codec = ost->st->codec;
2118         icodec = ist->st->codec;
2119
2120         if (metadata_streams_autocopy)
2121             av_metadata_copy(&ost->st->metadata, ist->st->metadata,
2122                              AV_METADATA_DONT_OVERWRITE);
2123
2124         ost->st->disposition = ist->st->disposition;
2125         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2126         codec->chroma_sample_location = icodec->chroma_sample_location;
2127
2128         if (ost->st->stream_copy) {
2129             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2130
2131             if (extra_size > INT_MAX)
2132                 goto fail;
2133
2134             /* if stream_copy is selected, no need to decode or encode */
2135             codec->codec_id = icodec->codec_id;
2136             codec->codec_type = icodec->codec_type;
2137
2138             if(!codec->codec_tag){
2139                 if(   !os->oformat->codec_tag
2140                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2141                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2142                     codec->codec_tag = icodec->codec_tag;
2143             }
2144
2145             codec->bit_rate = icodec->bit_rate;
2146             codec->rc_max_rate    = icodec->rc_max_rate;
2147             codec->rc_buffer_size = icodec->rc_buffer_size;
2148             codec->extradata= av_mallocz(extra_size);
2149             if (!codec->extradata)
2150                 goto fail;
2151             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2152             codec->extradata_size= icodec->extradata_size;
2153             if(!copy_tb && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base) && av_q2d(ist->st->time_base) < 1.0/500){
2154                 codec->time_base = icodec->time_base;
2155                 codec->time_base.num *= icodec->ticks_per_frame;
2156                 av_reduce(&codec->time_base.num, &codec->time_base.den,
2157                           codec->time_base.num, codec->time_base.den, INT_MAX);
2158             }else
2159                 codec->time_base = ist->st->time_base;
2160             switch(codec->codec_type) {
2161             case AVMEDIA_TYPE_AUDIO:
2162                 if(audio_volume != 256) {
2163                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2164                     ffmpeg_exit(1);
2165                 }
2166                 codec->channel_layout = icodec->channel_layout;
2167                 codec->sample_rate = icodec->sample_rate;
2168                 codec->channels = icodec->channels;
2169                 codec->frame_size = icodec->frame_size;
2170                 codec->block_align= icodec->block_align;
2171                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2172                     codec->block_align= 0;
2173                 if(codec->codec_id == CODEC_ID_AC3)
2174                     codec->block_align= 0;
2175                 break;
2176             case AVMEDIA_TYPE_VIDEO:
2177                 codec->pix_fmt = icodec->pix_fmt;
2178                 codec->width = icodec->width;
2179                 codec->height = icodec->height;
2180                 codec->has_b_frames = icodec->has_b_frames;
2181                 break;
2182             case AVMEDIA_TYPE_SUBTITLE:
2183                 codec->width = icodec->width;
2184                 codec->height = icodec->height;
2185                 break;
2186             default:
2187                 abort();
2188             }
2189         } else {
2190             switch(codec->codec_type) {
2191             case AVMEDIA_TYPE_AUDIO:
2192                 ost->fifo= av_fifo_alloc(1024);
2193                 if(!ost->fifo)
2194                     goto fail;
2195                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2196                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2197                 icodec->request_channels = codec->channels;
2198                 ist->decoding_needed = 1;
2199                 ost->encoding_needed = 1;
2200                 ost->resample_sample_fmt  = icodec->sample_fmt;
2201                 ost->resample_sample_rate = icodec->sample_rate;
2202                 ost->resample_channels    = icodec->channels;
2203                 break;
2204             case AVMEDIA_TYPE_VIDEO:
2205                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2206                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2207                     ffmpeg_exit(1);
2208                 }
2209                 ost->video_resample = (codec->width != icodec->width   ||
2210                                        codec->height != icodec->height ||
2211                         (codec->pix_fmt != icodec->pix_fmt));
2212                 if (ost->video_resample) {
2213 #if !CONFIG_AVFILTER
2214                     avcodec_get_frame_defaults(&ost->pict_tmp);
2215                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2216                                          codec->width, codec->height)) {
2217                         fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
2218                         ffmpeg_exit(1);
2219                     }
2220                     sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
2221                     ost->img_resample_ctx = sws_getContext(
2222                         icodec->width,
2223                         icodec->height,
2224                             icodec->pix_fmt,
2225                             codec->width,
2226                             codec->height,
2227                             codec->pix_fmt,
2228                             sws_flags, NULL, NULL, NULL);
2229                     if (ost->img_resample_ctx == NULL) {
2230                         fprintf(stderr, "Cannot get resampling context\n");
2231                         ffmpeg_exit(1);
2232                     }
2233
2234                     ost->original_height = icodec->height;
2235                     ost->original_width  = icodec->width;
2236 #endif
2237                     codec->bits_per_raw_sample= 0;
2238                 }
2239                 ost->resample_height = icodec->height;
2240                 ost->resample_width  = icodec->width;
2241                 ost->resample_pix_fmt= icodec->pix_fmt;
2242                 ost->encoding_needed = 1;
2243                 ist->decoding_needed = 1;
2244
2245 #if CONFIG_AVFILTER
2246                 if (configure_filters(ist, ost)) {
2247                     fprintf(stderr, "Error opening filters!\n");
2248                     exit(1);
2249                 }
2250 #endif
2251                 break;
2252             case AVMEDIA_TYPE_SUBTITLE:
2253                 ost->encoding_needed = 1;
2254                 ist->decoding_needed = 1;
2255                 break;
2256             default:
2257                 abort();
2258                 break;
2259             }
2260             /* two pass mode */
2261             if (ost->encoding_needed &&
2262                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2263                 char logfilename[1024];
2264                 FILE *f;
2265
2266                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2267                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2268                          i);
2269                 if (codec->flags & CODEC_FLAG_PASS1) {
2270                     f = fopen(logfilename, "wb");
2271                     if (!f) {
2272                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2273                         ffmpeg_exit(1);
2274                     }
2275                     ost->logfile = f;
2276                 } else {
2277                     char  *logbuffer;
2278                     size_t logbuffer_size;
2279                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2280                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2281                         ffmpeg_exit(1);
2282                     }
2283                     codec->stats_in = logbuffer;
2284                 }
2285             }
2286         }
2287         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2288             int size= codec->width * codec->height;
2289             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2290         }
2291     }
2292
2293     if (!bit_buffer)
2294         bit_buffer = av_malloc(bit_buffer_size);
2295     if (!bit_buffer) {
2296         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2297                 bit_buffer_size);
2298         ret = AVERROR(ENOMEM);
2299         goto fail;
2300     }
2301
2302     /* open each encoder */
2303     for(i=0;i<nb_ostreams;i++) {
2304         ost = ost_table[i];
2305         if (ost->encoding_needed) {
2306             AVCodec *codec = i < nb_output_codecs ? output_codecs[i] : NULL;
2307             AVCodecContext *dec = ist_table[ost->source_index]->st->codec;
2308             if (!codec)
2309                 codec = avcodec_find_encoder(ost->st->codec->codec_id);
2310             if (!codec) {
2311                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2312                          ost->st->codec->codec_id, ost->file_index, ost->index);
2313                 ret = AVERROR(EINVAL);
2314                 goto dump_format;
2315             }
2316             if (dec->subtitle_header) {
2317                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2318                 if (!ost->st->codec->subtitle_header) {
2319                     ret = AVERROR(ENOMEM);
2320                     goto dump_format;
2321                 }
2322                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2323                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2324             }
2325             if (avcodec_open(ost->st->codec, codec) < 0) {
2326                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2327                         ost->file_index, ost->index);
2328                 ret = AVERROR(EINVAL);
2329                 goto dump_format;
2330             }
2331             extra_size += ost->st->codec->extradata_size;
2332         }
2333     }
2334
2335     /* open each decoder */
2336     for(i=0;i<nb_istreams;i++) {
2337         ist = ist_table[i];
2338         if (ist->decoding_needed) {
2339             AVCodec *codec = i < nb_input_codecs ? input_codecs[i] : NULL;
2340             if (!codec)
2341                 codec = avcodec_find_decoder(ist->st->codec->codec_id);
2342             if (!codec) {
2343                 snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
2344                         ist->st->codec->codec_id, ist->file_index, ist->index);
2345                 ret = AVERROR(EINVAL);
2346                 goto dump_format;
2347             }
2348             if (avcodec_open(ist->st->codec, codec) < 0) {
2349                 snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
2350                         ist->file_index, ist->index);
2351                 ret = AVERROR(EINVAL);
2352                 goto dump_format;
2353             }
2354             //if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2355             //    ist->st->codec->flags |= CODEC_FLAG_REPEAT_FIELD;
2356         }
2357     }
2358
2359     /* init pts */
2360     for(i=0;i<nb_istreams;i++) {
2361         AVStream *st;
2362         ist = ist_table[i];
2363         st= ist->st;
2364         ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
2365         ist->next_pts = AV_NOPTS_VALUE;
2366         ist->is_start = 1;
2367     }
2368
2369     /* set meta data information from input file if required */
2370     for (i=0;i<nb_meta_data_maps;i++) {
2371         AVFormatContext *files[2];
2372         AVMetadata      **meta[2];
2373         int j;
2374
2375 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
2376         if ((index) < 0 || (index) >= (nb_elems)) {\
2377             snprintf(error, sizeof(error), "Invalid %s index %d while processing metadata maps\n",\
2378                      (desc), (index));\
2379             ret = AVERROR(EINVAL);\
2380             goto dump_format;\
2381         }
2382
2383         int out_file_index = meta_data_maps[i][0].file;
2384         int in_file_index = meta_data_maps[i][1].file;
2385         if (in_file_index < 0 || out_file_index < 0)
2386             continue;
2387         METADATA_CHECK_INDEX(out_file_index, nb_output_files, "output file")
2388         METADATA_CHECK_INDEX(in_file_index, nb_input_files, "input file")
2389
2390         files[0] = output_files[out_file_index];
2391         files[1] = input_files[in_file_index];
2392
2393         for (j = 0; j < 2; j++) {
2394             AVMetaDataMap *map = &meta_data_maps[i][j];
2395
2396             switch (map->type) {
2397             case 'g':
2398                 meta[j] = &files[j]->metadata;
2399                 break;
2400             case 's':
2401                 METADATA_CHECK_INDEX(map->index, files[j]->nb_streams, "stream")
2402                 meta[j] = &files[j]->streams[map->index]->metadata;
2403                 break;
2404             case 'c':
2405                 METADATA_CHECK_INDEX(map->index, files[j]->nb_chapters, "chapter")
2406                 meta[j] = &files[j]->chapters[map->index]->metadata;
2407                 break;
2408             case 'p':
2409                 METADATA_CHECK_INDEX(map->index, files[j]->nb_programs, "program")
2410                 meta[j] = &files[j]->programs[map->index]->metadata;
2411                 break;
2412             }
2413         }
2414
2415         av_metadata_copy(meta[0], *meta[1], AV_METADATA_DONT_OVERWRITE);
2416     }
2417
2418     /* copy global metadata by default */
2419     if (metadata_global_autocopy) {
2420
2421         for (i = 0; i < nb_output_files; i++)
2422             av_metadata_copy(&output_files[i]->metadata, input_files[0]->metadata,
2423                              AV_METADATA_DONT_OVERWRITE);
2424     }
2425
2426     /* copy chapters according to chapter maps */
2427     for (i = 0; i < nb_chapter_maps; i++) {
2428         int infile  = chapter_maps[i].in_file;
2429         int outfile = chapter_maps[i].out_file;
2430
2431         if (infile < 0 || outfile < 0)
2432             continue;
2433         if (infile >= nb_input_files) {
2434             snprintf(error, sizeof(error), "Invalid input file index %d in chapter mapping.\n", infile);
2435             ret = AVERROR(EINVAL);
2436             goto dump_format;
2437         }
2438         if (outfile >= nb_output_files) {
2439             snprintf(error, sizeof(error), "Invalid output file index %d in chapter mapping.\n",outfile);
2440             ret = AVERROR(EINVAL);
2441             goto dump_format;
2442         }
2443         copy_chapters(infile, outfile);
2444     }
2445
2446     /* copy chapters from the first input file that has them*/
2447     if (!nb_chapter_maps)
2448         for (i = 0; i < nb_input_files; i++) {
2449             if (!input_files[i]->nb_chapters)
2450                 continue;
2451
2452             for (j = 0; j < nb_output_files; j++)
2453                 if ((ret = copy_chapters(i, j)) < 0)
2454                     goto dump_format;
2455             break;
2456         }
2457
2458     /* open files and write file headers */
2459     for(i=0;i<nb_output_files;i++) {
2460         os = output_files[i];
2461         if (av_write_header(os) < 0) {
2462             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2463             ret = AVERROR(EINVAL);
2464             goto dump_format;
2465         }
2466         if (strcmp(output_files[i]->oformat->name, "rtp")) {
2467             want_sdp = 0;
2468         }
2469     }
2470
2471  dump_format:
2472     /* dump the file output parameters - cannot be done before in case
2473        of stream copy */
2474     for(i=0;i<nb_output_files;i++) {
2475         dump_format(output_files[i], i, output_files[i]->filename, 1);
2476     }
2477
2478     /* dump the stream mapping */
2479     if (verbose >= 0) {
2480         fprintf(stderr, "Stream mapping:\n");
2481         for(i=0;i<nb_ostreams;i++) {
2482             ost = ost_table[i];
2483             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2484                     ist_table[ost->source_index]->file_index,
2485                     ist_table[ost->source_index]->index,
2486                     ost->file_index,
2487                     ost->index);
2488             if (ost->sync_ist != ist_table[ost->source_index])
2489                 fprintf(stderr, " [sync #%d.%d]",
2490                         ost->sync_ist->file_index,
2491                         ost->sync_ist->index);
2492             fprintf(stderr, "\n");
2493         }
2494     }
2495
2496     if (ret) {
2497         fprintf(stderr, "%s\n", error);
2498         goto fail;
2499     }
2500
2501     if (want_sdp) {
2502         print_sdp(output_files, nb_output_files);
2503     }
2504
2505     if (!using_stdin && verbose >= 0) {
2506         fprintf(stderr, "Press [q] to stop encoding\n");
2507         url_set_interrupt_cb(decode_interrupt_cb);
2508     }
2509     term_init();
2510
2511     timer_start = av_gettime();
2512
2513     for(; received_sigterm == 0;) {
2514         int file_index, ist_index;
2515         AVPacket pkt;
2516         double ipts_min;
2517         double opts_min;
2518
2519     redo:
2520         ipts_min= 1e100;
2521         opts_min= 1e100;
2522         /* if 'q' pressed, exits */
2523         if (!using_stdin) {
2524             if (q_pressed)
2525                 break;
2526             /* read_key() returns 0 on EOF */
2527             key = read_key();
2528             if (key == 'q')
2529                 break;
2530         }
2531
2532         /* select the stream that we must read now by looking at the
2533            smallest output pts */
2534         file_index = -1;
2535         for(i=0;i<nb_ostreams;i++) {
2536             double ipts, opts;
2537             ost = ost_table[i];
2538             os = output_files[ost->file_index];
2539             ist = ist_table[ost->source_index];
2540             if(ist->is_past_recording_time || no_packet[ist->file_index])
2541                 continue;
2542                 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2543             ipts = (double)ist->pts;
2544             if (!file_table[ist->file_index].eof_reached){
2545                 if(ipts < ipts_min) {
2546                     ipts_min = ipts;
2547                     if(input_sync ) file_index = ist->file_index;
2548                 }
2549                 if(opts < opts_min) {
2550                     opts_min = opts;
2551                     if(!input_sync) file_index = ist->file_index;
2552                 }
2553             }
2554             if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
2555                 file_index= -1;
2556                 break;
2557             }
2558         }
2559         /* if none, if is finished */
2560         if (file_index < 0) {
2561             if(no_packet_count){
2562                 no_packet_count=0;
2563                 memset(no_packet, 0, sizeof(no_packet));
2564                 usleep(10000);
2565                 continue;
2566             }
2567             break;
2568         }
2569
2570         /* finish if limit size exhausted */
2571         if (limit_filesize != 0 && limit_filesize <= url_ftell(output_files[0]->pb))
2572             break;
2573
2574         /* read a frame from it and output it in the fifo */
2575         is = input_files[file_index];
2576         ret= av_read_frame(is, &pkt);
2577         if(ret == AVERROR(EAGAIN)){
2578             no_packet[file_index]=1;
2579             no_packet_count++;
2580             continue;
2581         }
2582         if (ret < 0) {
2583             file_table[file_index].eof_reached = 1;
2584             if (opt_shortest)
2585                 break;
2586             else
2587                 continue;
2588         }
2589
2590         no_packet_count=0;
2591         memset(no_packet, 0, sizeof(no_packet));
2592
2593         if (do_pkt_dump) {
2594             av_pkt_dump_log(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump);
2595         }
2596         /* the following test is needed in case new streams appear
2597            dynamically in stream : we ignore them */
2598         if (pkt.stream_index >= file_table[file_index].nb_streams)
2599             goto discard_packet;
2600         ist_index = file_table[file_index].ist_index + pkt.stream_index;
2601         ist = ist_table[ist_index];
2602         if (ist->discard)
2603             goto discard_packet;
2604
2605         if (pkt.dts != AV_NOPTS_VALUE)
2606             pkt.dts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2607         if (pkt.pts != AV_NOPTS_VALUE)
2608             pkt.pts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2609
2610         if (pkt.stream_index < nb_input_files_ts_scale[file_index]
2611             && input_files_ts_scale[file_index][pkt.stream_index]){
2612             if(pkt.pts != AV_NOPTS_VALUE)
2613                 pkt.pts *= input_files_ts_scale[file_index][pkt.stream_index];
2614             if(pkt.dts != AV_NOPTS_VALUE)
2615                 pkt.dts *= input_files_ts_scale[file_index][pkt.stream_index];
2616         }
2617
2618 //        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);
2619         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2620             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2621             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2622             int64_t delta= pkt_dts - ist->next_pts;
2623             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2624                 input_files_ts_offset[ist->file_index]-= delta;
2625                 if (verbose > 2)
2626                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n", delta, input_files_ts_offset[ist->file_index]);
2627                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2628                 if(pkt.pts != AV_NOPTS_VALUE)
2629                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2630             }
2631         }
2632
2633         /* finish if recording time exhausted */
2634         if (recording_time != INT64_MAX &&
2635             av_compare_ts(pkt.pts, ist->st->time_base, recording_time + start_time, (AVRational){1, 1000000}) >= 0) {
2636             ist->is_past_recording_time = 1;
2637             goto discard_packet;
2638         }
2639
2640         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->index, pkt.size);
2641         if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
2642
2643             if (verbose >= 0)
2644                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2645                         ist->file_index, ist->index);
2646             if (exit_on_error)
2647                 ffmpeg_exit(1);
2648             av_free_packet(&pkt);
2649             goto redo;
2650         }
2651
2652     discard_packet:
2653         av_free_packet(&pkt);
2654
2655         /* dump report by using the output first video and audio streams */
2656         print_report(output_files, ost_table, nb_ostreams, 0);
2657     }
2658
2659     /* at the end of stream, we must flush the decoder buffers */
2660     for(i=0;i<nb_istreams;i++) {
2661         ist = ist_table[i];
2662         if (ist->decoding_needed) {
2663             output_packet(ist, i, ost_table, nb_ostreams, NULL);
2664         }
2665     }
2666
2667     term_exit();
2668
2669     /* write the trailer if needed and close file */
2670     for(i=0;i<nb_output_files;i++) {
2671         os = output_files[i];
2672         av_write_trailer(os);
2673     }
2674
2675     /* dump report by using the first video and audio streams */
2676     print_report(output_files, ost_table, nb_ostreams, 1);
2677
2678     /* close each encoder */
2679     for(i=0;i<nb_ostreams;i++) {
2680         ost = ost_table[i];
2681         if (ost->encoding_needed) {
2682             av_freep(&ost->st->codec->stats_in);
2683             avcodec_close(ost->st->codec);
2684         }
2685     }
2686
2687     /* close each decoder */
2688     for(i=0;i<nb_istreams;i++) {
2689         ist = ist_table[i];
2690         if (ist->decoding_needed) {
2691             avcodec_close(ist->st->codec);
2692         }
2693     }
2694 #if CONFIG_AVFILTER
2695     avfilter_graph_free(&graph);
2696 #endif
2697
2698     /* finished ! */
2699     ret = 0;
2700
2701  fail:
2702     av_freep(&bit_buffer);
2703     av_free(file_table);
2704
2705     if (ist_table) {
2706         for(i=0;i<nb_istreams;i++) {
2707             ist = ist_table[i];
2708             av_free(ist);
2709         }
2710         av_free(ist_table);
2711     }
2712     if (ost_table) {
2713         for(i=0;i<nb_ostreams;i++) {
2714             ost = ost_table[i];
2715             if (ost) {
2716                 if (ost->st->stream_copy)
2717                     av_freep(&ost->st->codec->extradata);
2718                 if (ost->logfile) {
2719                     fclose(ost->logfile);
2720                     ost->logfile = NULL;
2721                 }
2722                 av_fifo_free(ost->fifo); /* works even if fifo is not
2723                                              initialized but set to zero */
2724                 av_freep(&ost->st->codec->subtitle_header);
2725                 av_free(ost->pict_tmp.data[0]);
2726                 av_free(ost->forced_kf_pts);
2727                 if (ost->video_resample)
2728                     sws_freeContext(ost->img_resample_ctx);
2729                 if (ost->resample)
2730                     audio_resample_close(ost->resample);
2731                 if (ost->reformat_ctx)
2732                     av_audio_convert_free(ost->reformat_ctx);
2733                 av_free(ost);
2734             }
2735         }
2736         av_free(ost_table);
2737     }
2738     return ret;
2739 }
2740
2741 static void opt_format(const char *arg)
2742 {
2743     last_asked_format = arg;
2744 }
2745
2746 static void opt_video_rc_override_string(const char *arg)
2747 {
2748     video_rc_override_string = arg;
2749 }
2750
2751 static int opt_me_threshold(const char *opt, const char *arg)
2752 {
2753     me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2754     return 0;
2755 }
2756
2757 static int opt_verbose(const char *opt, const char *arg)
2758 {
2759     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2760     return 0;
2761 }
2762
2763 static int opt_frame_rate(const char *opt, const char *arg)
2764 {
2765     if (av_parse_video_rate(&frame_rate, arg) < 0) {
2766         fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2767         ffmpeg_exit(1);
2768     }
2769     return 0;
2770 }
2771
2772 static int opt_bitrate(const char *opt, const char *arg)
2773 {
2774     int codec_type = opt[0]=='a' ? AVMEDIA_TYPE_AUDIO : AVMEDIA_TYPE_VIDEO;
2775
2776     opt_default(opt, arg);
2777
2778     if (av_get_int(avcodec_opts[codec_type], "b", NULL) < 1000)
2779         fprintf(stderr, "WARNING: The bitrate parameter is set too low. It takes bits/s as argument, not kbits/s\n");
2780
2781     return 0;
2782 }
2783
2784 static int opt_frame_crop(const char *opt, const char *arg)
2785 {
2786     fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
2787     return AVERROR(EINVAL);
2788 }
2789
2790 static void opt_frame_size(const char *arg)
2791 {
2792     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2793         fprintf(stderr, "Incorrect frame size\n");
2794         ffmpeg_exit(1);
2795     }
2796 }
2797
2798 static int opt_pad(const char *opt, const char *arg) {
2799     fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2800     return -1;
2801 }
2802
2803 static void opt_frame_pix_fmt(const char *arg)
2804 {
2805     if (strcmp(arg, "list")) {
2806         frame_pix_fmt = av_get_pix_fmt(arg);
2807         if (frame_pix_fmt == PIX_FMT_NONE) {
2808             fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2809             ffmpeg_exit(1);
2810         }
2811     } else {
2812         show_pix_fmts();
2813         ffmpeg_exit(0);
2814     }
2815 }
2816
2817 static void opt_frame_aspect_ratio(const char *arg)
2818 {
2819     int x = 0, y = 0;
2820     double ar = 0;
2821     const char *p;
2822     char *end;
2823
2824     p = strchr(arg, ':');
2825     if (p) {
2826         x = strtol(arg, &end, 10);
2827         if (end == p)
2828             y = strtol(end+1, &end, 10);
2829         if (x > 0 && y > 0)
2830             ar = (double)x / (double)y;
2831     } else
2832         ar = strtod(arg, NULL);
2833
2834     if (!ar) {
2835         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2836         ffmpeg_exit(1);
2837     }
2838     frame_aspect_ratio = ar;
2839
2840     x = vfilters ? strlen(vfilters) : 0;
2841     vfilters = av_realloc(vfilters, x+100);
2842     snprintf(vfilters+x, x+100, "%csetdar=%f\n", x?',':' ', ar);
2843 }
2844
2845 static int opt_metadata(const char *opt, const char *arg)
2846 {
2847     char *mid= strchr(arg, '=');
2848
2849     if(!mid){
2850         fprintf(stderr, "Missing =\n");
2851         ffmpeg_exit(1);
2852     }
2853     *mid++= 0;
2854
2855     av_metadata_set2(&metadata, arg, mid, 0);
2856
2857     return 0;
2858 }
2859
2860 static void opt_qscale(const char *arg)
2861 {
2862     video_qscale = atof(arg);
2863     if (video_qscale <= 0 ||
2864         video_qscale > 255) {
2865         fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2866         ffmpeg_exit(1);
2867     }
2868 }
2869
2870 static void opt_top_field_first(const char *arg)
2871 {
2872     top_field_first= atoi(arg);
2873 }
2874
2875 static int opt_thread_count(const char *opt, const char *arg)
2876 {
2877     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2878 #if !HAVE_THREADS
2879     if (verbose >= 0)
2880         fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2881 #endif
2882     return 0;
2883 }
2884
2885 static void opt_audio_sample_fmt(const char *arg)
2886 {
2887     if (strcmp(arg, "list")) {
2888         audio_sample_fmt = av_get_sample_fmt(arg);
2889         if (audio_sample_fmt == AV_SAMPLE_FMT_NONE) {
2890             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg);
2891             ffmpeg_exit(1);
2892         }
2893     } else {
2894         list_fmts(av_get_sample_fmt_string, AV_SAMPLE_FMT_NB);
2895         ffmpeg_exit(0);
2896     }
2897 }
2898
2899 static int opt_audio_rate(const char *opt, const char *arg)
2900 {
2901     audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2902     return 0;
2903 }
2904
2905 static int opt_audio_channels(const char *opt, const char *arg)
2906 {
2907     audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2908     return 0;
2909 }
2910
2911 static void opt_video_channel(const char *arg)
2912 {
2913     video_channel = strtol(arg, NULL, 0);
2914 }
2915
2916 static void opt_video_standard(const char *arg)
2917 {
2918     video_standard = av_strdup(arg);
2919 }
2920
2921 static void opt_codec(int *pstream_copy, char **pcodec_name,
2922                       int codec_type, const char *arg)
2923 {
2924     av_freep(pcodec_name);
2925     if (!strcmp(arg, "copy")) {
2926         *pstream_copy = 1;
2927     } else {
2928         *pcodec_name = av_strdup(arg);
2929     }
2930 }
2931
2932 static void opt_audio_codec(const char *arg)
2933 {
2934     opt_codec(&audio_stream_copy, &audio_codec_name, AVMEDIA_TYPE_AUDIO, arg);
2935 }
2936
2937 static void opt_video_codec(const char *arg)
2938 {
2939     opt_codec(&video_stream_copy, &video_codec_name, AVMEDIA_TYPE_VIDEO, arg);
2940 }
2941
2942 static void opt_subtitle_codec(const char *arg)
2943 {
2944     opt_codec(&subtitle_stream_copy, &subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, arg);
2945 }
2946
2947 static int opt_codec_tag(const char *opt, const char *arg)
2948 {
2949     char *tail;
2950     uint32_t *codec_tag;
2951
2952     codec_tag = !strcmp(opt, "atag") ? &audio_codec_tag :
2953                 !strcmp(opt, "vtag") ? &video_codec_tag :
2954                 !strcmp(opt, "stag") ? &subtitle_codec_tag : NULL;
2955     if (!codec_tag)
2956         return -1;
2957
2958     *codec_tag = strtol(arg, &tail, 0);
2959     if (!tail || *tail)
2960         *codec_tag = AV_RL32(arg);
2961
2962     return 0;
2963 }
2964
2965 static void opt_map(const char *arg)
2966 {
2967     AVStreamMap *m;
2968     char *p;
2969
2970     stream_maps = grow_array(stream_maps, sizeof(*stream_maps), &nb_stream_maps, nb_stream_maps + 1);
2971     m = &stream_maps[nb_stream_maps-1];
2972
2973     m->file_index = strtol(arg, &p, 0);
2974     if (*p)
2975         p++;
2976
2977     m->stream_index = strtol(p, &p, 0);
2978     if (*p) {
2979         p++;
2980         m->sync_file_index = strtol(p, &p, 0);
2981         if (*p)
2982             p++;
2983         m->sync_stream_index = strtol(p, &p, 0);
2984     } else {
2985         m->sync_file_index = m->file_index;
2986         m->sync_stream_index = m->stream_index;
2987     }
2988 }
2989
2990 static void parse_meta_type(char *arg, char *type, int *index, char **endptr)
2991 {
2992     *endptr = arg;
2993     if (*arg == ',') {
2994         *type = *(++arg);
2995         switch (*arg) {
2996         case 'g':
2997             break;
2998         case 's':
2999         case 'c':
3000         case 'p':
3001             *index = strtol(++arg, endptr, 0);
3002             break;
3003         default:
3004             fprintf(stderr, "Invalid metadata type %c.\n", *arg);
3005             ffmpeg_exit(1);
3006         }
3007     } else
3008         *type = 'g';
3009 }
3010
3011 static void opt_map_metadata(const char *arg)
3012 {
3013     AVMetaDataMap *m, *m1;
3014     char *p;
3015
3016     meta_data_maps = grow_array(meta_data_maps, sizeof(*meta_data_maps),
3017                                 &nb_meta_data_maps, nb_meta_data_maps + 1);
3018
3019     m = &meta_data_maps[nb_meta_data_maps - 1][0];
3020     m->file = strtol(arg, &p, 0);
3021     parse_meta_type(p, &m->type, &m->index, &p);
3022     if (*p)
3023         p++;
3024
3025     m1 = &meta_data_maps[nb_meta_data_maps - 1][1];
3026     m1->file = strtol(p, &p, 0);
3027     parse_meta_type(p, &m1->type, &m1->index, &p);
3028
3029     if (m->type == 'g' || m1->type == 'g')
3030         metadata_global_autocopy = 0;
3031     if (m->type == 's' || m1->type == 's')
3032         metadata_streams_autocopy = 0;
3033     if (m->type == 'c' || m1->type == 'c')
3034         metadata_chapters_autocopy = 0;
3035 }
3036
3037 static void opt_map_meta_data(const char *arg)
3038 {
3039     fprintf(stderr, "-map_meta_data is deprecated and will be removed soon. "
3040                     "Use -map_metadata instead.\n");
3041     opt_map_metadata(arg);
3042 }
3043
3044 static void opt_map_chapters(const char *arg)
3045 {
3046     AVChapterMap *c;
3047     char *p;
3048
3049     chapter_maps = grow_array(chapter_maps, sizeof(*chapter_maps), &nb_chapter_maps,
3050                               nb_chapter_maps + 1);
3051     c = &chapter_maps[nb_chapter_maps - 1];
3052     c->out_file = strtol(arg, &p, 0);
3053     if (*p)
3054         p++;
3055
3056     c->in_file = strtol(p, &p, 0);
3057 }
3058
3059 static void opt_input_ts_scale(const char *arg)
3060 {
3061     unsigned int stream;
3062     double scale;
3063     char *p;
3064
3065     stream = strtol(arg, &p, 0);
3066     if (*p)
3067         p++;
3068     scale= strtod(p, &p);
3069
3070     if(stream >= MAX_STREAMS)
3071         ffmpeg_exit(1);
3072
3073     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);
3074     input_files_ts_scale[nb_input_files][stream]= scale;
3075 }
3076
3077 static int opt_recording_time(const char *opt, const char *arg)
3078 {
3079     recording_time = parse_time_or_die(opt, arg, 1);
3080     return 0;
3081 }
3082
3083 static int opt_start_time(const char *opt, const char *arg)
3084 {
3085     start_time = parse_time_or_die(opt, arg, 1);
3086     return 0;
3087 }
3088
3089 static int opt_recording_timestamp(const char *opt, const char *arg)
3090 {
3091     recording_timestamp = parse_time_or_die(opt, arg, 0) / 1000000;
3092     return 0;
3093 }
3094
3095 static int opt_input_ts_offset(const char *opt, const char *arg)
3096 {
3097     input_ts_offset = parse_time_or_die(opt, arg, 1);
3098     return 0;
3099 }
3100
3101 static enum CodecID find_codec_or_die(const char *name, int type, int encoder, int strict)
3102 {
3103     const char *codec_string = encoder ? "encoder" : "decoder";
3104     AVCodec *codec;
3105
3106     if(!name)
3107         return CODEC_ID_NONE;
3108     codec = encoder ?
3109         avcodec_find_encoder_by_name(name) :
3110         avcodec_find_decoder_by_name(name);
3111     if(!codec) {
3112         fprintf(stderr, "Unknown %s '%s'\n", codec_string, name);
3113         ffmpeg_exit(1);
3114     }
3115     if(codec->type != type) {
3116         fprintf(stderr, "Invalid %s type '%s'\n", codec_string, name);
3117         ffmpeg_exit(1);
3118     }
3119     if(codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
3120        strict > FF_COMPLIANCE_EXPERIMENTAL) {
3121         fprintf(stderr, "%s '%s' is experimental and might produce bad "
3122                 "results.\nAdd '-strict experimental' if you want to use it.\n",
3123                 codec_string, codec->name);
3124         codec = encoder ?
3125             avcodec_find_encoder(codec->id) :
3126             avcodec_find_decoder(codec->id);
3127         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
3128             fprintf(stderr, "Or use the non experimental %s '%s'.\n",
3129                     codec_string, codec->name);
3130         ffmpeg_exit(1);
3131     }
3132     return codec->id;
3133 }
3134
3135 static void opt_input_file(const char *filename)
3136 {
3137     AVFormatContext *ic;
3138     AVFormatParameters params, *ap = &params;
3139     AVInputFormat *file_iformat = NULL;
3140     int err, i, ret, rfps, rfps_base;
3141     int64_t timestamp;
3142
3143     if (last_asked_format) {
3144         if (!(file_iformat = av_find_input_format(last_asked_format))) {
3145             fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
3146             ffmpeg_exit(1);
3147         }
3148         last_asked_format = NULL;
3149     }
3150
3151     if (!strcmp(filename, "-"))
3152         filename = "pipe:";
3153
3154     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3155                     !strcmp(filename, "/dev/stdin");
3156
3157     /* get default parameters from command line */
3158     ic = avformat_alloc_context();
3159     if (!ic) {
3160         print_error(filename, AVERROR(ENOMEM));
3161         ffmpeg_exit(1);
3162     }
3163
3164     memset(ap, 0, sizeof(*ap));
3165     ap->prealloced_context = 1;
3166     ap->sample_rate = audio_sample_rate;
3167     ap->channels = audio_channels;
3168     ap->time_base.den = frame_rate.num;
3169     ap->time_base.num = frame_rate.den;
3170     ap->width = frame_width;
3171     ap->height = frame_height;
3172     ap->pix_fmt = frame_pix_fmt;
3173    // ap->sample_fmt = audio_sample_fmt; //FIXME:not implemented in libavformat
3174     ap->channel = video_channel;
3175     ap->standard = video_standard;
3176
3177     set_context_opts(ic, avformat_opts, AV_OPT_FLAG_DECODING_PARAM, NULL);
3178
3179     ic->video_codec_id   =
3180         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0,
3181                           avcodec_opts[AVMEDIA_TYPE_VIDEO   ]->strict_std_compliance);
3182     ic->audio_codec_id   =
3183         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0,
3184                           avcodec_opts[AVMEDIA_TYPE_AUDIO   ]->strict_std_compliance);
3185     ic->subtitle_codec_id=
3186         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0,
3187                           avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->strict_std_compliance);
3188     ic->flags |= AVFMT_FLAG_NONBLOCK;
3189
3190     /* open the input file with generic libav function */
3191     err = av_open_input_file(&ic, filename, file_iformat, 0, ap);
3192     if (err < 0) {
3193         print_error(filename, err);
3194         ffmpeg_exit(1);
3195     }
3196     if(opt_programid) {
3197         int i, j;
3198         int found=0;
3199         for(i=0; i<ic->nb_streams; i++){
3200             ic->streams[i]->discard= AVDISCARD_ALL;
3201         }
3202         for(i=0; i<ic->nb_programs; i++){
3203             AVProgram *p= ic->programs[i];
3204             if(p->id != opt_programid){
3205                 p->discard = AVDISCARD_ALL;
3206             }else{
3207                 found=1;
3208                 for(j=0; j<p->nb_stream_indexes; j++){
3209                     ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
3210                 }
3211             }
3212         }
3213         if(!found){
3214             fprintf(stderr, "Specified program id not found\n");
3215             ffmpeg_exit(1);
3216         }
3217         opt_programid=0;
3218     }
3219
3220     ic->loop_input = loop_input;
3221
3222     /* If not enough info to get the stream parameters, we decode the
3223        first frames to get it. (used in mpeg case for example) */
3224     ret = av_find_stream_info(ic);
3225     if (ret < 0 && verbose >= 0) {
3226         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3227         av_close_input_file(ic);
3228         ffmpeg_exit(1);
3229     }
3230
3231     timestamp = start_time;
3232     /* add the stream start time */
3233     if (ic->start_time != AV_NOPTS_VALUE)
3234         timestamp += ic->start_time;
3235
3236     /* if seeking requested, we execute it */
3237     if (start_time != 0) {
3238         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3239         if (ret < 0) {
3240             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3241                     filename, (double)timestamp / AV_TIME_BASE);
3242         }
3243         /* reset seek info */
3244         start_time = 0;
3245     }
3246
3247     /* update the current parameters so that they match the one of the input stream */
3248     for(i=0;i<ic->nb_streams;i++) {
3249         AVStream *st = ic->streams[i];
3250         AVCodecContext *dec = st->codec;
3251         avcodec_thread_init(dec, thread_count);
3252         input_codecs = grow_array(input_codecs, sizeof(*input_codecs), &nb_input_codecs, nb_input_codecs + 1);
3253         switch (dec->codec_type) {
3254         case AVMEDIA_TYPE_AUDIO:
3255             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(audio_codec_name);
3256             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]);
3257             //fprintf(stderr, "\nInput Audio channels: %d", dec->channels);
3258             channel_layout    = dec->channel_layout;
3259             audio_channels    = dec->channels;
3260             audio_sample_rate = dec->sample_rate;
3261             audio_sample_fmt  = dec->sample_fmt;
3262             if(audio_disable)
3263                 st->discard= AVDISCARD_ALL;
3264             /* Note that av_find_stream_info can add more streams, and we
3265              * currently have no chance of setting up lowres decoding
3266              * early enough for them. */
3267             if (dec->lowres)
3268                 audio_sample_rate >>= dec->lowres;
3269             break;
3270         case AVMEDIA_TYPE_VIDEO:
3271             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(video_codec_name);
3272             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]);
3273             frame_height = dec->height;
3274             frame_width  = dec->width;
3275             if(ic->streams[i]->sample_aspect_ratio.num)
3276                 frame_aspect_ratio=av_q2d(ic->streams[i]->sample_aspect_ratio);
3277             else
3278                 frame_aspect_ratio=av_q2d(dec->sample_aspect_ratio);
3279             frame_aspect_ratio *= (float) dec->width / dec->height;
3280             frame_pix_fmt = dec->pix_fmt;
3281             rfps      = ic->streams[i]->r_frame_rate.num;
3282             rfps_base = ic->streams[i]->r_frame_rate.den;
3283             if (dec->lowres) {
3284                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3285                 frame_height >>= dec->lowres;
3286                 frame_width  >>= dec->lowres;
3287                 dec->height = frame_height;
3288                 dec->width  = frame_width;
3289             }
3290             if(me_threshold)
3291                 dec->debug |= FF_DEBUG_MV;
3292
3293             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3294
3295                 if (verbose >= 0)
3296                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3297                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3298
3299                     (float)rfps / rfps_base, rfps, rfps_base);
3300             }
3301             /* update the current frame rate to match the stream frame rate */
3302             frame_rate.num = rfps;
3303             frame_rate.den = rfps_base;
3304
3305             if(video_disable)
3306                 st->discard= AVDISCARD_ALL;
3307             else if(video_discard)
3308                 st->discard= video_discard;
3309             break;
3310         case AVMEDIA_TYPE_DATA:
3311             break;
3312         case AVMEDIA_TYPE_SUBTITLE:
3313             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(subtitle_codec_name);
3314             if(subtitle_disable)
3315                 st->discard = AVDISCARD_ALL;
3316             break;
3317         case AVMEDIA_TYPE_ATTACHMENT:
3318         case AVMEDIA_TYPE_UNKNOWN:
3319             break;
3320         default:
3321             abort();
3322         }
3323     }
3324
3325     input_files[nb_input_files] = ic;
3326     input_files_ts_offset[nb_input_files] = input_ts_offset - (copy_ts ? 0 : timestamp);
3327     /* dump the file content */
3328     if (verbose >= 0)
3329         dump_format(ic, nb_input_files, filename, 0);
3330
3331     nb_input_files++;
3332
3333     video_channel = 0;
3334
3335     av_freep(&video_codec_name);
3336     av_freep(&audio_codec_name);
3337     av_freep(&subtitle_codec_name);
3338 }
3339
3340 static void check_audio_video_sub_inputs(int *has_video_ptr, int *has_audio_ptr,
3341                                          int *has_subtitle_ptr)
3342 {
3343     int has_video, has_audio, has_subtitle, i, j;
3344     AVFormatContext *ic;
3345
3346     has_video = 0;
3347     has_audio = 0;
3348     has_subtitle = 0;
3349     for(j=0;j<nb_input_files;j++) {
3350         ic = input_files[j];
3351         for(i=0;i<ic->nb_streams;i++) {
3352             AVCodecContext *enc = ic->streams[i]->codec;
3353             switch(enc->codec_type) {
3354             case AVMEDIA_TYPE_AUDIO:
3355                 has_audio = 1;
3356                 break;
3357             case AVMEDIA_TYPE_VIDEO:
3358                 has_video = 1;
3359                 break;
3360             case AVMEDIA_TYPE_SUBTITLE:
3361                 has_subtitle = 1;
3362                 break;
3363             case AVMEDIA_TYPE_DATA:
3364             case AVMEDIA_TYPE_ATTACHMENT:
3365             case AVMEDIA_TYPE_UNKNOWN:
3366                 break;
3367             default:
3368                 abort();
3369             }
3370         }
3371     }
3372     *has_video_ptr = has_video;
3373     *has_audio_ptr = has_audio;
3374     *has_subtitle_ptr = has_subtitle;
3375 }
3376
3377 static void new_video_stream(AVFormatContext *oc, int file_idx)
3378 {
3379     AVStream *st;
3380     AVOutputStream *ost;
3381     AVCodecContext *video_enc;
3382     enum CodecID codec_id = CODEC_ID_NONE;
3383     AVCodec *codec= NULL;
3384
3385     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3386     if (!st) {
3387         fprintf(stderr, "Could not alloc stream\n");
3388         ffmpeg_exit(1);
3389     }
3390     ost = new_output_stream(oc, file_idx);
3391
3392     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3393     if(!video_stream_copy){
3394         if (video_codec_name) {
3395             codec_id = find_codec_or_die(video_codec_name, AVMEDIA_TYPE_VIDEO, 1,
3396                                          avcodec_opts[AVMEDIA_TYPE_VIDEO]->strict_std_compliance);
3397             codec = avcodec_find_encoder_by_name(video_codec_name);
3398             output_codecs[nb_output_codecs-1] = codec;
3399         } else {
3400             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_VIDEO);
3401             codec = avcodec_find_encoder(codec_id);
3402         }
3403     }
3404
3405     avcodec_get_context_defaults3(st->codec, codec);
3406     ost->bitstream_filters = video_bitstream_filters;
3407     video_bitstream_filters= NULL;
3408
3409     avcodec_thread_init(st->codec, thread_count);
3410
3411     video_enc = st->codec;
3412
3413     if(video_codec_tag)
3414         video_enc->codec_tag= video_codec_tag;
3415
3416     if(   (video_global_header&1)
3417        || (video_global_header==0 && (oc->oformat->flags & AVFMT_GLOBALHEADER))){
3418         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3419         avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3420     }
3421     if(video_global_header&2){
3422         video_enc->flags2 |= CODEC_FLAG2_LOCAL_HEADER;
3423         avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags2|= CODEC_FLAG2_LOCAL_HEADER;
3424     }
3425
3426     if (video_stream_copy) {
3427         st->stream_copy = 1;
3428         video_enc->codec_type = AVMEDIA_TYPE_VIDEO;
3429         video_enc->sample_aspect_ratio =
3430         st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3431     } else {
3432         const char *p;
3433         int i;
3434         AVRational fps= frame_rate.num ? frame_rate : (AVRational){25,1};
3435
3436         video_enc->codec_id = codec_id;
3437         set_context_opts(video_enc, avcodec_opts[AVMEDIA_TYPE_VIDEO], AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3438
3439         if (codec && codec->supported_framerates && !force_fps)
3440             fps = codec->supported_framerates[av_find_nearest_q_idx(fps, codec->supported_framerates)];
3441         video_enc->time_base.den = fps.num;
3442         video_enc->time_base.num = fps.den;
3443
3444         video_enc->width = frame_width;
3445         video_enc->height = frame_height;
3446         video_enc->sample_aspect_ratio = av_d2q(frame_aspect_ratio*video_enc->height/video_enc->width, 255);
3447         video_enc->pix_fmt = frame_pix_fmt;
3448         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3449
3450         choose_pixel_fmt(st, codec);
3451
3452         if (intra_only)
3453             video_enc->gop_size = 0;
3454         if (video_qscale || same_quality) {
3455             video_enc->flags |= CODEC_FLAG_QSCALE;
3456             video_enc->global_quality=
3457                 st->quality = FF_QP2LAMBDA * video_qscale;
3458         }
3459
3460         if(intra_matrix)
3461             video_enc->intra_matrix = intra_matrix;
3462         if(inter_matrix)
3463             video_enc->inter_matrix = inter_matrix;
3464
3465         p= video_rc_override_string;
3466         for(i=0; p; i++){
3467             int start, end, q;
3468             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3469             if(e!=3){
3470                 fprintf(stderr, "error parsing rc_override\n");
3471                 ffmpeg_exit(1);
3472             }
3473             video_enc->rc_override=
3474                 av_realloc(video_enc->rc_override,
3475                            sizeof(RcOverride)*(i+1));
3476             video_enc->rc_override[i].start_frame= start;
3477             video_enc->rc_override[i].end_frame  = end;
3478             if(q>0){
3479                 video_enc->rc_override[i].qscale= q;
3480                 video_enc->rc_override[i].quality_factor= 1.0;
3481             }
3482             else{
3483                 video_enc->rc_override[i].qscale= 0;
3484                 video_enc->rc_override[i].quality_factor= -q/100.0;
3485             }
3486             p= strchr(p, '/');
3487             if(p) p++;
3488         }
3489         video_enc->rc_override_count=i;
3490         if (!video_enc->rc_initial_buffer_occupancy)
3491             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3492         video_enc->me_threshold= me_threshold;
3493         video_enc->intra_dc_precision= intra_dc_precision - 8;
3494
3495         if (do_psnr)
3496             video_enc->flags|= CODEC_FLAG_PSNR;
3497
3498         /* two pass mode */
3499         if (do_pass) {
3500             if (do_pass == 1) {
3501                 video_enc->flags |= CODEC_FLAG_PASS1;
3502             } else {
3503                 video_enc->flags |= CODEC_FLAG_PASS2;
3504             }
3505         }
3506
3507         if (forced_key_frames)
3508             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3509     }
3510     if (video_language) {
3511         av_metadata_set2(&st->metadata, "language", video_language, 0);
3512         av_freep(&video_language);
3513     }
3514
3515     /* reset some key parameters */
3516     video_disable = 0;
3517     av_freep(&video_codec_name);
3518     av_freep(&forced_key_frames);
3519     video_stream_copy = 0;
3520     frame_pix_fmt = PIX_FMT_NONE;
3521 }
3522
3523 static void new_audio_stream(AVFormatContext *oc, int file_idx)
3524 {
3525     AVStream *st;
3526     AVOutputStream *ost;
3527     AVCodec *codec= NULL;
3528     AVCodecContext *audio_enc;
3529     enum CodecID codec_id = CODEC_ID_NONE;
3530
3531     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3532     if (!st) {
3533         fprintf(stderr, "Could not alloc stream\n");
3534         ffmpeg_exit(1);
3535     }
3536     ost = new_output_stream(oc, file_idx);
3537
3538     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3539     if(!audio_stream_copy){
3540         if (audio_codec_name) {
3541             codec_id = find_codec_or_die(audio_codec_name, AVMEDIA_TYPE_AUDIO, 1,
3542                                          avcodec_opts[AVMEDIA_TYPE_AUDIO]->strict_std_compliance);
3543             codec = avcodec_find_encoder_by_name(audio_codec_name);
3544             output_codecs[nb_output_codecs-1] = codec;
3545         } else {
3546             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_AUDIO);
3547             codec = avcodec_find_encoder(codec_id);
3548         }
3549     }
3550
3551     avcodec_get_context_defaults3(st->codec, codec);
3552
3553     ost->bitstream_filters = audio_bitstream_filters;
3554     audio_bitstream_filters= NULL;
3555
3556     avcodec_thread_init(st->codec, thread_count);
3557
3558     audio_enc = st->codec;
3559     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3560
3561     if(audio_codec_tag)
3562         audio_enc->codec_tag= audio_codec_tag;
3563
3564     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3565         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3566         avcodec_opts[AVMEDIA_TYPE_AUDIO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3567     }
3568     if (audio_stream_copy) {
3569         st->stream_copy = 1;
3570         audio_enc->channels = audio_channels;
3571         audio_enc->sample_rate = audio_sample_rate;
3572     } else {
3573         audio_enc->codec_id = codec_id;
3574         set_context_opts(audio_enc, avcodec_opts[AVMEDIA_TYPE_AUDIO], AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3575
3576         if (audio_qscale > QSCALE_NONE) {
3577             audio_enc->flags |= CODEC_FLAG_QSCALE;
3578             audio_enc->global_quality = st->quality = FF_QP2LAMBDA * audio_qscale;
3579         }
3580         audio_enc->channels = audio_channels;
3581         audio_enc->sample_fmt = audio_sample_fmt;
3582         audio_enc->sample_rate = audio_sample_rate;
3583         audio_enc->channel_layout = channel_layout;
3584         if (av_get_channel_layout_nb_channels(channel_layout) != audio_channels)
3585             audio_enc->channel_layout = 0;
3586         choose_sample_fmt(st, codec);
3587         choose_sample_rate(st, codec);
3588     }
3589     audio_enc->time_base= (AVRational){1, audio_sample_rate};
3590     if (audio_language) {
3591         av_metadata_set2(&st->metadata, "language", audio_language, 0);
3592         av_freep(&audio_language);
3593     }
3594
3595     /* reset some key parameters */
3596     audio_disable = 0;
3597     av_freep(&audio_codec_name);
3598     audio_stream_copy = 0;
3599 }
3600
3601 static void new_subtitle_stream(AVFormatContext *oc, int file_idx)
3602 {
3603     AVStream *st;
3604     AVOutputStream *ost;
3605     AVCodec *codec=NULL;
3606     AVCodecContext *subtitle_enc;
3607     enum CodecID codec_id = CODEC_ID_NONE;
3608
3609     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3610     if (!st) {
3611         fprintf(stderr, "Could not alloc stream\n");
3612         ffmpeg_exit(1);
3613     }
3614     ost = new_output_stream(oc, file_idx);
3615     subtitle_enc = st->codec;
3616     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3617     if(!subtitle_stream_copy){
3618         if (subtitle_codec_name) {
3619             codec_id = find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 1,
3620                                          avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->strict_std_compliance);
3621             codec= output_codecs[nb_output_codecs-1] = avcodec_find_encoder_by_name(subtitle_codec_name);
3622         } else {
3623             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_SUBTITLE);
3624             codec = avcodec_find_encoder(codec_id);
3625         }
3626     }
3627     avcodec_get_context_defaults3(st->codec, codec);
3628
3629     ost->bitstream_filters = subtitle_bitstream_filters;
3630     subtitle_bitstream_filters= NULL;
3631
3632     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3633
3634     if(subtitle_codec_tag)
3635         subtitle_enc->codec_tag= subtitle_codec_tag;
3636
3637     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3638         subtitle_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3639         avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->flags |= CODEC_FLAG_GLOBAL_HEADER;
3640     }
3641     if (subtitle_stream_copy) {
3642         st->stream_copy = 1;
3643     } else {
3644         subtitle_enc->codec_id = codec_id;
3645         set_context_opts(avcodec_opts[AVMEDIA_TYPE_SUBTITLE], subtitle_enc, AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3646     }
3647
3648     if (subtitle_language) {
3649         av_metadata_set2(&st->metadata, "language", subtitle_language, 0);
3650         av_freep(&subtitle_language);
3651     }
3652
3653     subtitle_disable = 0;
3654     av_freep(&subtitle_codec_name);
3655     subtitle_stream_copy = 0;
3656 }
3657
3658 static int opt_new_stream(const char *opt, const char *arg)
3659 {
3660     AVFormatContext *oc;
3661     int file_idx = nb_output_files - 1;
3662     if (nb_output_files <= 0) {
3663         fprintf(stderr, "At least one output file must be specified\n");
3664         ffmpeg_exit(1);
3665     }
3666     oc = output_files[file_idx];
3667
3668     if      (!strcmp(opt, "newvideo"   )) new_video_stream   (oc, file_idx);
3669     else if (!strcmp(opt, "newaudio"   )) new_audio_stream   (oc, file_idx);
3670     else if (!strcmp(opt, "newsubtitle")) new_subtitle_stream(oc, file_idx);
3671     else av_assert0(0);
3672     return 0;
3673 }
3674