Add an APIchanges entry for avformat_free_context
[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     PtsCorrectionContext pts_ctx;
324     int is_start;            /* is 1 at the start and after a discontinuity */
325     int showed_multi_packet_warning;
326     int is_past_recording_time;
327 #if CONFIG_AVFILTER
328     AVFilterContext *output_video_filter;
329     AVFilterContext *input_video_filter;
330     AVFrame *filter_frame;
331     int has_filter_frame;
332     AVFilterBufferRef *picref;
333 #endif
334 } AVInputStream;
335
336 typedef struct AVInputFile {
337     int eof_reached;      /* true if eof reached */
338     int ist_index;        /* index of first stream in ist_table */
339     int buffer_size;      /* current total buffer size */
340     int nb_streams;       /* nb streams we are aware of */
341 } AVInputFile;
342
343 #if HAVE_TERMIOS_H
344
345 /* init terminal so that we can grab keys */
346 static struct termios oldtty;
347 #endif
348
349 #if CONFIG_AVFILTER
350
351 static int configure_filters(AVInputStream *ist, AVOutputStream *ost)
352 {
353     AVFilterContext *last_filter, *filter;
354     /** filter graph containing all filters including input & output */
355     AVCodecContext *codec = ost->st->codec;
356     AVCodecContext *icodec = ist->st->codec;
357     FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
358     char args[255];
359     int ret;
360
361     graph = avfilter_graph_alloc();
362
363     snprintf(args, 255, "%d:%d:%d:%d:%d", ist->st->codec->width,
364              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE);
365     ret = avfilter_graph_create_filter(&ist->input_video_filter, avfilter_get_by_name("buffer"),
366                                        "src", args, NULL, graph);
367     if (ret < 0)
368         return ret;
369     ret = avfilter_graph_create_filter(&ist->output_video_filter, &ffsink,
370                                        "out", NULL, &ffsink_ctx, graph);
371     if (ret < 0)
372         return ret;
373     last_filter = ist->input_video_filter;
374
375     if (codec->width  != icodec->width || codec->height != icodec->height) {
376         snprintf(args, 255, "%d:%d:flags=0x%X",
377                  codec->width,
378                  codec->height,
379                  (int)av_get_int(sws_opts, "sws_flags", NULL));
380         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
381                                                 NULL, args, NULL, graph)) < 0)
382             return ret;
383         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
384             return ret;
385         last_filter = filter;
386     }
387
388     snprintf(args, sizeof(args), "flags=0x%X", (int)av_get_int(sws_opts, "sws_flags", NULL));
389     graph->scale_sws_opts = av_strdup(args);
390
391     if (vfilters) {
392         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
393         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
394
395         outputs->name    = av_strdup("in");
396         outputs->filter_ctx = last_filter;
397         outputs->pad_idx = 0;
398         outputs->next    = NULL;
399
400         inputs->name    = av_strdup("out");
401         inputs->filter_ctx = ist->output_video_filter;
402         inputs->pad_idx = 0;
403         inputs->next    = NULL;
404
405         if ((ret = avfilter_graph_parse(graph, vfilters, inputs, outputs, NULL)) < 0)
406             return ret;
407         av_freep(&vfilters);
408     } else {
409         if ((ret = avfilter_link(last_filter, 0, ist->output_video_filter, 0)) < 0)
410             return ret;
411     }
412
413     if ((ret = avfilter_graph_config(graph, NULL)) < 0)
414         return ret;
415
416     codec->width  = ist->output_video_filter->inputs[0]->w;
417     codec->height = ist->output_video_filter->inputs[0]->h;
418
419     return 0;
420 }
421 #endif /* CONFIG_AVFILTER */
422
423 static void term_exit(void)
424 {
425     av_log(NULL, AV_LOG_QUIET, "");
426 #if HAVE_TERMIOS_H
427     tcsetattr (0, TCSANOW, &oldtty);
428 #endif
429 }
430
431 static volatile int received_sigterm = 0;
432
433 static void
434 sigterm_handler(int sig)
435 {
436     received_sigterm = sig;
437     term_exit();
438 }
439
440 static void term_init(void)
441 {
442 #if HAVE_TERMIOS_H
443     struct termios tty;
444
445     tcgetattr (0, &tty);
446     oldtty = tty;
447     atexit(term_exit);
448
449     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
450                           |INLCR|IGNCR|ICRNL|IXON);
451     tty.c_oflag |= OPOST;
452     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
453     tty.c_cflag &= ~(CSIZE|PARENB);
454     tty.c_cflag |= CS8;
455     tty.c_cc[VMIN] = 1;
456     tty.c_cc[VTIME] = 0;
457
458     tcsetattr (0, TCSANOW, &tty);
459     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
460 #endif
461
462     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
463     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
464 #ifdef SIGXCPU
465     signal(SIGXCPU, sigterm_handler);
466 #endif
467 }
468
469 /* read a key without blocking */
470 static int read_key(void)
471 {
472 #if HAVE_TERMIOS_H
473     int n = 1;
474     unsigned char ch;
475     struct timeval tv;
476     fd_set rfds;
477
478     FD_ZERO(&rfds);
479     FD_SET(0, &rfds);
480     tv.tv_sec = 0;
481     tv.tv_usec = 0;
482     n = select(1, &rfds, NULL, NULL, &tv);
483     if (n > 0) {
484         n = read(0, &ch, 1);
485         if (n == 1)
486             return ch;
487
488         return n;
489     }
490 #elif HAVE_CONIO_H
491     if(kbhit())
492         return(getch());
493 #endif
494     return -1;
495 }
496
497 static int decode_interrupt_cb(void)
498 {
499     return q_pressed || (q_pressed = read_key() == 'q');
500 }
501
502 static int ffmpeg_exit(int ret)
503 {
504     int i;
505
506     /* close files */
507     for(i=0;i<nb_output_files;i++) {
508         /* maybe av_close_output_file ??? */
509         AVFormatContext *s = output_files[i];
510         int j;
511         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
512             url_fclose(s->pb);
513         for(j=0;j<s->nb_streams;j++) {
514             av_metadata_free(&s->streams[j]->metadata);
515             av_free(s->streams[j]->codec);
516             av_free(s->streams[j]->info);
517             av_free(s->streams[j]);
518         }
519         for(j=0;j<s->nb_programs;j++) {
520             av_metadata_free(&s->programs[j]->metadata);
521         }
522         for(j=0;j<s->nb_chapters;j++) {
523             av_metadata_free(&s->chapters[j]->metadata);
524         }
525         av_metadata_free(&s->metadata);
526         av_free(s);
527         av_free(output_streams_for_file[i]);
528     }
529     for(i=0;i<nb_input_files;i++) {
530         av_close_input_file(input_files[i]);
531         av_free(input_files_ts_scale[i]);
532     }
533
534     av_free(intra_matrix);
535     av_free(inter_matrix);
536
537     if (vstats_file)
538         fclose(vstats_file);
539     av_free(vstats_filename);
540
541     av_free(opt_names);
542     av_free(streamid_map);
543     av_free(input_codecs);
544     av_free(output_codecs);
545     av_free(stream_maps);
546     av_free(meta_data_maps);
547
548     av_free(video_codec_name);
549     av_free(audio_codec_name);
550     av_free(subtitle_codec_name);
551
552     av_free(video_standard);
553
554     uninit_opts();
555     av_free(audio_buf);
556     av_free(audio_out);
557     allocated_audio_buf_size= allocated_audio_out_size= 0;
558     av_free(samples);
559
560 #if CONFIG_AVFILTER
561     avfilter_uninit();
562 #endif
563
564     if (received_sigterm) {
565         fprintf(stderr,
566             "Received signal %d: terminating.\n",
567             (int) received_sigterm);
568         exit (255);
569     }
570
571     exit(ret); /* not all OS-es handle main() return value */
572     return ret;
573 }
574
575 /* similar to ff_dynarray_add() and av_fast_realloc() */
576 static void *grow_array(void *array, int elem_size, int *size, int new_size)
577 {
578     if (new_size >= INT_MAX / elem_size) {
579         fprintf(stderr, "Array too big.\n");
580         ffmpeg_exit(1);
581     }
582     if (*size < new_size) {
583         uint8_t *tmp = av_realloc(array, new_size*elem_size);
584         if (!tmp) {
585             fprintf(stderr, "Could not alloc buffer.\n");
586             ffmpeg_exit(1);
587         }
588         memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
589         *size = new_size;
590         return tmp;
591     }
592     return array;
593 }
594
595 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
596 {
597     if(codec && codec->sample_fmts){
598         const enum AVSampleFormat *p= codec->sample_fmts;
599         for(; *p!=-1; p++){
600             if(*p == st->codec->sample_fmt)
601                 break;
602         }
603         if (*p == -1) {
604             av_log(NULL, AV_LOG_WARNING,
605                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
606                    av_get_sample_fmt_name(st->codec->sample_fmt),
607                    codec->name,
608                    av_get_sample_fmt_name(codec->sample_fmts[0]));
609             st->codec->sample_fmt = codec->sample_fmts[0];
610         }
611     }
612 }
613
614 static void choose_sample_rate(AVStream *st, AVCodec *codec)
615 {
616     if(codec && codec->supported_samplerates){
617         const int *p= codec->supported_samplerates;
618         int best=0;
619         int best_dist=INT_MAX;
620         for(; *p; p++){
621             int dist= abs(st->codec->sample_rate - *p);
622             if(dist < best_dist){
623                 best_dist= dist;
624                 best= *p;
625             }
626         }
627         if(best_dist){
628             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
629         }
630         st->codec->sample_rate= best;
631     }
632 }
633
634 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
635 {
636     if(codec && codec->pix_fmts){
637         const enum PixelFormat *p= codec->pix_fmts;
638         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
639             if(st->codec->codec_id==CODEC_ID_MJPEG){
640                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
641             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
642                 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};
643             }
644         }
645         for(; *p!=-1; p++){
646             if(*p == st->codec->pix_fmt)
647                 break;
648         }
649         if(*p == -1)
650             st->codec->pix_fmt = codec->pix_fmts[0];
651     }
652 }
653
654 static AVOutputStream *new_output_stream(AVFormatContext *oc, int file_idx)
655 {
656     int idx = oc->nb_streams - 1;
657     AVOutputStream *ost;
658
659     output_streams_for_file[file_idx] =
660         grow_array(output_streams_for_file[file_idx],
661                    sizeof(*output_streams_for_file[file_idx]),
662                    &nb_output_streams_for_file[file_idx],
663                    oc->nb_streams);
664     ost = output_streams_for_file[file_idx][idx] =
665         av_mallocz(sizeof(AVOutputStream));
666     if (!ost) {
667         fprintf(stderr, "Could not alloc output stream\n");
668         ffmpeg_exit(1);
669     }
670     ost->file_index = file_idx;
671     ost->index = idx;
672     return ost;
673 }
674
675 static int read_ffserver_streams(AVFormatContext *s, const char *filename)
676 {
677     int i, err;
678     AVFormatContext *ic;
679     int nopts = 0;
680
681     err = av_open_input_file(&ic, filename, NULL, FFM_PACKET_SIZE, NULL);
682     if (err < 0)
683         return err;
684     /* copy stream format */
685     s->nb_streams = 0;
686     for(i=0;i<ic->nb_streams;i++) {
687         AVStream *st;
688         AVCodec *codec;
689
690         s->nb_streams++;
691
692         // FIXME: a more elegant solution is needed
693         st = av_mallocz(sizeof(AVStream));
694         memcpy(st, ic->streams[i], sizeof(AVStream));
695         st->codec = avcodec_alloc_context();
696         if (!st->codec) {
697             print_error(filename, AVERROR(ENOMEM));
698             ffmpeg_exit(1);
699         }
700         avcodec_copy_context(st->codec, ic->streams[i]->codec);
701         s->streams[i] = st;
702
703         codec = avcodec_find_encoder(st->codec->codec_id);
704         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
705             if (audio_stream_copy) {
706                 st->stream_copy = 1;
707             } else
708                 choose_sample_fmt(st, codec);
709         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
710             if (video_stream_copy) {
711                 st->stream_copy = 1;
712             } else
713                 choose_pixel_fmt(st, codec);
714         }
715
716         if(!st->codec->thread_count)
717             st->codec->thread_count = 1;
718         if(st->codec->thread_count>1)
719             avcodec_thread_init(st->codec, st->codec->thread_count);
720
721         if(st->codec->flags & CODEC_FLAG_BITEXACT)
722             nopts = 1;
723
724         new_output_stream(s, nb_output_files);
725     }
726
727     if (!nopts)
728         s->timestamp = av_gettime();
729
730     av_close_input_file(ic);
731     return 0;
732 }
733
734 static double
735 get_sync_ipts(const AVOutputStream *ost)
736 {
737     const AVInputStream *ist = ost->sync_ist;
738     return (double)(ist->pts - start_time)/AV_TIME_BASE;
739 }
740
741 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
742     int ret;
743
744     while(bsfc){
745         AVPacket new_pkt= *pkt;
746         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
747                                           &new_pkt.data, &new_pkt.size,
748                                           pkt->data, pkt->size,
749                                           pkt->flags & AV_PKT_FLAG_KEY);
750         if(a>0){
751             av_free_packet(pkt);
752             new_pkt.destruct= av_destruct_packet;
753         } else if(a<0){
754             fprintf(stderr, "%s failed for stream %d, codec %s",
755                     bsfc->filter->name, pkt->stream_index,
756                     avctx->codec ? avctx->codec->name : "copy");
757             print_error("", a);
758             if (exit_on_error)
759                 ffmpeg_exit(1);
760         }
761         *pkt= new_pkt;
762
763         bsfc= bsfc->next;
764     }
765
766     ret= av_interleaved_write_frame(s, pkt);
767     if(ret < 0){
768         print_error("av_interleaved_write_frame()", ret);
769         ffmpeg_exit(1);
770     }
771 }
772
773 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
774
775 static void do_audio_out(AVFormatContext *s,
776                          AVOutputStream *ost,
777                          AVInputStream *ist,
778                          unsigned char *buf, int size)
779 {
780     uint8_t *buftmp;
781     int64_t audio_out_size, audio_buf_size;
782     int64_t allocated_for_size= size;
783
784     int size_out, frame_bytes, ret, resample_changed;
785     AVCodecContext *enc= ost->st->codec;
786     AVCodecContext *dec= ist->st->codec;
787     int osize= av_get_bits_per_sample_fmt(enc->sample_fmt)/8;
788     int isize= av_get_bits_per_sample_fmt(dec->sample_fmt)/8;
789     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
790
791 need_realloc:
792     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
793     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
794     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
795     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
796     audio_buf_size*= osize*enc->channels;
797
798     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
799     if(coded_bps > 8*osize)
800         audio_out_size= audio_out_size * coded_bps / (8*osize);
801     audio_out_size += FF_MIN_BUFFER_SIZE;
802
803     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
804         fprintf(stderr, "Buffer sizes too large\n");
805         ffmpeg_exit(1);
806     }
807
808     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
809     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
810     if (!audio_buf || !audio_out){
811         fprintf(stderr, "Out of memory in do_audio_out\n");
812         ffmpeg_exit(1);
813     }
814
815     if (enc->channels != dec->channels)
816         ost->audio_resample = 1;
817
818     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
819                        ost->resample_channels    != dec->channels   ||
820                        ost->resample_sample_rate != dec->sample_rate;
821
822     if ((ost->audio_resample && !ost->resample) || resample_changed) {
823         if (resample_changed) {
824             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",
825                    ist->file_index, ist->index,
826                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
827                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
828             ost->resample_sample_fmt  = dec->sample_fmt;
829             ost->resample_channels    = dec->channels;
830             ost->resample_sample_rate = dec->sample_rate;
831             if (ost->resample)
832                 audio_resample_close(ost->resample);
833         }
834         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
835         if (audio_sync_method <= 1 &&
836             ost->resample_sample_fmt  == enc->sample_fmt &&
837             ost->resample_channels    == enc->channels   &&
838             ost->resample_sample_rate == enc->sample_rate) {
839             ost->resample = NULL;
840             ost->audio_resample = 0;
841         } else {
842             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
843                 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
844             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
845                                                    enc->sample_rate, dec->sample_rate,
846                                                    enc->sample_fmt,  dec->sample_fmt,
847                                                    16, 10, 0, 0.8);
848             if (!ost->resample) {
849                 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
850                         dec->channels, dec->sample_rate,
851                         enc->channels, enc->sample_rate);
852                 ffmpeg_exit(1);
853             }
854         }
855     }
856
857 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
858     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
859         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
860         if (ost->reformat_ctx)
861             av_audio_convert_free(ost->reformat_ctx);
862         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
863                                                    dec->sample_fmt, 1, NULL, 0);
864         if (!ost->reformat_ctx) {
865             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
866                 av_get_sample_fmt_name(dec->sample_fmt),
867                 av_get_sample_fmt_name(enc->sample_fmt));
868             ffmpeg_exit(1);
869         }
870         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
871     }
872
873     if(audio_sync_method){
874         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
875                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
876         double idelta= delta*dec->sample_rate / enc->sample_rate;
877         int byte_delta= ((int)idelta)*2*dec->channels;
878
879         //FIXME resample delay
880         if(fabs(delta) > 50){
881             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
882                 if(byte_delta < 0){
883                     byte_delta= FFMAX(byte_delta, -size);
884                     size += byte_delta;
885                     buf  -= byte_delta;
886                     if(verbose > 2)
887                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
888                     if(!size)
889                         return;
890                     ist->is_start=0;
891                 }else{
892                     static uint8_t *input_tmp= NULL;
893                     input_tmp= av_realloc(input_tmp, byte_delta + size);
894
895                     if(byte_delta > allocated_for_size - size){
896                         allocated_for_size= byte_delta + (int64_t)size;
897                         goto need_realloc;
898                     }
899                     ist->is_start=0;
900
901                     memset(input_tmp, 0, byte_delta);
902                     memcpy(input_tmp + byte_delta, buf, size);
903                     buf= input_tmp;
904                     size += byte_delta;
905                     if(verbose > 2)
906                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
907                 }
908             }else if(audio_sync_method>1){
909                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
910                 av_assert0(ost->audio_resample);
911                 if(verbose > 2)
912                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
913 //                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));
914                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
915             }
916         }
917     }else
918         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
919                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
920
921     if (ost->audio_resample) {
922         buftmp = audio_buf;
923         size_out = audio_resample(ost->resample,
924                                   (short *)buftmp, (short *)buf,
925                                   size / (dec->channels * isize));
926         size_out = size_out * enc->channels * osize;
927     } else {
928         buftmp = buf;
929         size_out = size;
930     }
931
932     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
933         const void *ibuf[6]= {buftmp};
934         void *obuf[6]= {audio_buf};
935         int istride[6]= {isize};
936         int ostride[6]= {osize};
937         int len= size_out/istride[0];
938         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
939             printf("av_audio_convert() failed\n");
940             if (exit_on_error)
941                 ffmpeg_exit(1);
942             return;
943         }
944         buftmp = audio_buf;
945         size_out = len*osize;
946     }
947
948     /* now encode as many frames as possible */
949     if (enc->frame_size > 1) {
950         /* output resampled raw samples */
951         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
952             fprintf(stderr, "av_fifo_realloc2() failed\n");
953             ffmpeg_exit(1);
954         }
955         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
956
957         frame_bytes = enc->frame_size * osize * enc->channels;
958
959         while (av_fifo_size(ost->fifo) >= frame_bytes) {
960             AVPacket pkt;
961             av_init_packet(&pkt);
962
963             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
964
965             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
966
967             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
968                                        (short *)audio_buf);
969             if (ret < 0) {
970                 fprintf(stderr, "Audio encoding failed\n");
971                 ffmpeg_exit(1);
972             }
973             audio_size += ret;
974             pkt.stream_index= ost->index;
975             pkt.data= audio_out;
976             pkt.size= ret;
977             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
978                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
979             pkt.flags |= AV_PKT_FLAG_KEY;
980             write_frame(s, &pkt, enc, ost->bitstream_filters);
981
982             ost->sync_opts += enc->frame_size;
983         }
984     } else {
985         AVPacket pkt;
986         av_init_packet(&pkt);
987
988         ost->sync_opts += size_out / (osize * enc->channels);
989
990         /* output a pcm frame */
991         /* determine the size of the coded buffer */
992         size_out /= osize;
993         if (coded_bps)
994             size_out = size_out*coded_bps/8;
995
996         if(size_out > audio_out_size){
997             fprintf(stderr, "Internal error, buffer size too small\n");
998             ffmpeg_exit(1);
999         }
1000
1001         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1002         ret = avcodec_encode_audio(enc, audio_out, size_out,
1003                                    (short *)buftmp);
1004         if (ret < 0) {
1005             fprintf(stderr, "Audio encoding failed\n");
1006             ffmpeg_exit(1);
1007         }
1008         audio_size += ret;
1009         pkt.stream_index= ost->index;
1010         pkt.data= audio_out;
1011         pkt.size= ret;
1012         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1013             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1014         pkt.flags |= AV_PKT_FLAG_KEY;
1015         write_frame(s, &pkt, enc, ost->bitstream_filters);
1016     }
1017 }
1018
1019 static void pre_process_video_frame(AVInputStream *ist, AVPicture *picture, void **bufp)
1020 {
1021     AVCodecContext *dec;
1022     AVPicture *picture2;
1023     AVPicture picture_tmp;
1024     uint8_t *buf = 0;
1025
1026     dec = ist->st->codec;
1027
1028     /* deinterlace : must be done before any resize */
1029     if (do_deinterlace) {
1030         int size;
1031
1032         /* create temporary picture */
1033         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1034         buf = av_malloc(size);
1035         if (!buf)
1036             return;
1037
1038         picture2 = &picture_tmp;
1039         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1040
1041         if(avpicture_deinterlace(picture2, picture,
1042                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1043             /* if error, do not deinterlace */
1044             fprintf(stderr, "Deinterlacing failed\n");
1045             av_free(buf);
1046             buf = NULL;
1047             picture2 = picture;
1048         }
1049     } else {
1050         picture2 = picture;
1051     }
1052
1053     if (picture != picture2)
1054         *picture = *picture2;
1055     *bufp = buf;
1056 }
1057
1058 /* we begin to correct av delay at this threshold */
1059 #define AV_DELAY_MAX 0.100
1060
1061 static void do_subtitle_out(AVFormatContext *s,
1062                             AVOutputStream *ost,
1063                             AVInputStream *ist,
1064                             AVSubtitle *sub,
1065                             int64_t pts)
1066 {
1067     static uint8_t *subtitle_out = NULL;
1068     int subtitle_out_max_size = 1024 * 1024;
1069     int subtitle_out_size, nb, i;
1070     AVCodecContext *enc;
1071     AVPacket pkt;
1072
1073     if (pts == AV_NOPTS_VALUE) {
1074         fprintf(stderr, "Subtitle packets must have a pts\n");
1075         if (exit_on_error)
1076             ffmpeg_exit(1);
1077         return;
1078     }
1079
1080     enc = ost->st->codec;
1081
1082     if (!subtitle_out) {
1083         subtitle_out = av_malloc(subtitle_out_max_size);
1084     }
1085
1086     /* Note: DVB subtitle need one packet to draw them and one other
1087        packet to clear them */
1088     /* XXX: signal it in the codec context ? */
1089     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1090         nb = 2;
1091     else
1092         nb = 1;
1093
1094     for(i = 0; i < nb; i++) {
1095         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1096         // start_display_time is required to be 0
1097         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1098         sub->end_display_time -= sub->start_display_time;
1099         sub->start_display_time = 0;
1100         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1101                                                     subtitle_out_max_size, sub);
1102         if (subtitle_out_size < 0) {
1103             fprintf(stderr, "Subtitle encoding failed\n");
1104             ffmpeg_exit(1);
1105         }
1106
1107         av_init_packet(&pkt);
1108         pkt.stream_index = ost->index;
1109         pkt.data = subtitle_out;
1110         pkt.size = subtitle_out_size;
1111         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1112         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1113             /* XXX: the pts correction is handled here. Maybe handling
1114                it in the codec would be better */
1115             if (i == 0)
1116                 pkt.pts += 90 * sub->start_display_time;
1117             else
1118                 pkt.pts += 90 * sub->end_display_time;
1119         }
1120         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1121     }
1122 }
1123
1124 static int bit_buffer_size= 1024*256;
1125 static uint8_t *bit_buffer= NULL;
1126
1127 static void do_video_out(AVFormatContext *s,
1128                          AVOutputStream *ost,
1129                          AVInputStream *ist,
1130                          AVFrame *in_picture,
1131                          int *frame_size)
1132 {
1133     int nb_frames, i, ret;
1134     AVFrame *final_picture, *formatted_picture, *resampling_dst, *padding_src;
1135     AVCodecContext *enc, *dec;
1136     double sync_ipts;
1137
1138     enc = ost->st->codec;
1139     dec = ist->st->codec;
1140
1141     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1142
1143     /* by default, we output a single frame */
1144     nb_frames = 1;
1145
1146     *frame_size = 0;
1147
1148     if(video_sync_method){
1149         double vdelta = sync_ipts - ost->sync_opts;
1150         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1151         if (vdelta < -1.1)
1152             nb_frames = 0;
1153         else if (video_sync_method == 2 || (video_sync_method<0 && (s->oformat->flags & AVFMT_VARIABLE_FPS))){
1154             if(vdelta<=-0.6){
1155                 nb_frames=0;
1156             }else if(vdelta>0.6)
1157                 ost->sync_opts= lrintf(sync_ipts);
1158         }else if (vdelta > 1.1)
1159             nb_frames = lrintf(vdelta);
1160 //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);
1161         if (nb_frames == 0){
1162             ++nb_frames_drop;
1163             if (verbose>2)
1164                 fprintf(stderr, "*** drop!\n");
1165         }else if (nb_frames > 1) {
1166             nb_frames_dup += nb_frames - 1;
1167             if (verbose>2)
1168                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1169         }
1170     }else
1171         ost->sync_opts= lrintf(sync_ipts);
1172
1173     nb_frames= FFMIN(nb_frames, max_frames[AVMEDIA_TYPE_VIDEO] - ost->frame_number);
1174     if (nb_frames <= 0)
1175         return;
1176
1177     formatted_picture = in_picture;
1178     final_picture = formatted_picture;
1179     padding_src = formatted_picture;
1180     resampling_dst = &ost->pict_tmp;
1181
1182     if (   ost->resample_height != ist->st->codec->height
1183         || ost->resample_width  != ist->st->codec->width
1184         || (ost->resample_pix_fmt!= ist->st->codec->pix_fmt) ) {
1185
1186         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));
1187         if(!ost->video_resample)
1188             ffmpeg_exit(1);
1189     }
1190
1191 #if !CONFIG_AVFILTER
1192     if (ost->video_resample) {
1193         padding_src = NULL;
1194         final_picture = &ost->pict_tmp;
1195         if(  ost->resample_height != ist->st->codec->height
1196           || ost->resample_width  != ist->st->codec->width
1197           || (ost->resample_pix_fmt!= ist->st->codec->pix_fmt) ) {
1198
1199             /* initialize a new scaler context */
1200             sws_freeContext(ost->img_resample_ctx);
1201             sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
1202             ost->img_resample_ctx = sws_getContext(
1203                 ist->st->codec->width,
1204                 ist->st->codec->height,
1205                 ist->st->codec->pix_fmt,
1206                 ost->st->codec->width,
1207                 ost->st->codec->height,
1208                 ost->st->codec->pix_fmt,
1209                 sws_flags, NULL, NULL, NULL);
1210             if (ost->img_resample_ctx == NULL) {
1211                 fprintf(stderr, "Cannot get resampling context\n");
1212                 ffmpeg_exit(1);
1213             }
1214         }
1215         sws_scale(ost->img_resample_ctx, formatted_picture->data, formatted_picture->linesize,
1216               0, ost->resample_height, resampling_dst->data, resampling_dst->linesize);
1217     }
1218 #endif
1219
1220     /* duplicates frame if needed */
1221     for(i=0;i<nb_frames;i++) {
1222         AVPacket pkt;
1223         av_init_packet(&pkt);
1224         pkt.stream_index= ost->index;
1225
1226         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1227             /* raw pictures are written as AVPicture structure to
1228                avoid any copies. We support temorarily the older
1229                method. */
1230             AVFrame* old_frame = enc->coded_frame;
1231             enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
1232             pkt.data= (uint8_t *)final_picture;
1233             pkt.size=  sizeof(AVPicture);
1234             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1235             pkt.flags |= AV_PKT_FLAG_KEY;
1236
1237             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1238             enc->coded_frame = old_frame;
1239         } else {
1240             AVFrame big_picture;
1241
1242             big_picture= *final_picture;
1243             /* better than nothing: use input picture interlaced
1244                settings */
1245             big_picture.interlaced_frame = in_picture->interlaced_frame;
1246             if(avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)){
1247                 if(top_field_first == -1)
1248                     big_picture.top_field_first = in_picture->top_field_first;
1249                 else
1250                     big_picture.top_field_first = top_field_first;
1251             }
1252
1253             /* handles sameq here. This is not correct because it may
1254                not be a global option */
1255             big_picture.quality = same_quality ? ist->st->quality : ost->st->quality;
1256             if(!me_threshold)
1257                 big_picture.pict_type = 0;
1258 //            big_picture.pts = AV_NOPTS_VALUE;
1259             big_picture.pts= ost->sync_opts;
1260 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1261 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1262             if (ost->forced_kf_index < ost->forced_kf_count &&
1263                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1264                 big_picture.pict_type = FF_I_TYPE;
1265                 ost->forced_kf_index++;
1266             }
1267             ret = avcodec_encode_video(enc,
1268                                        bit_buffer, bit_buffer_size,
1269                                        &big_picture);
1270             if (ret < 0) {
1271                 fprintf(stderr, "Video encoding failed\n");
1272                 ffmpeg_exit(1);
1273             }
1274
1275             if(ret>0){
1276                 pkt.data= bit_buffer;
1277                 pkt.size= ret;
1278                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1279                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1280 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1281    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1282    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1283
1284                 if(enc->coded_frame->key_frame)
1285                     pkt.flags |= AV_PKT_FLAG_KEY;
1286                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1287                 *frame_size = ret;
1288                 video_size += ret;
1289                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1290                 //        enc->frame_number-1, ret, enc->pict_type);
1291                 /* if two pass, output log */
1292                 if (ost->logfile && enc->stats_out) {
1293                     fprintf(ost->logfile, "%s", enc->stats_out);
1294                 }
1295             }
1296         }
1297         ost->sync_opts++;
1298         ost->frame_number++;
1299     }
1300 }
1301
1302 static double psnr(double d){
1303     return -10.0*log(d)/log(10.0);
1304 }
1305
1306 static void do_video_stats(AVFormatContext *os, AVOutputStream *ost,
1307                            int frame_size)
1308 {
1309     AVCodecContext *enc;
1310     int frame_number;
1311     double ti1, bitrate, avg_bitrate;
1312
1313     /* this is executed just the first time do_video_stats is called */
1314     if (!vstats_file) {
1315         vstats_file = fopen(vstats_filename, "w");
1316         if (!vstats_file) {
1317             perror("fopen");
1318             ffmpeg_exit(1);
1319         }
1320     }
1321
1322     enc = ost->st->codec;
1323     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1324         frame_number = ost->frame_number;
1325         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1326         if (enc->flags&CODEC_FLAG_PSNR)
1327             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1328
1329         fprintf(vstats_file,"f_size= %6d ", frame_size);
1330         /* compute pts value */
1331         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1332         if (ti1 < 0.01)
1333             ti1 = 0.01;
1334
1335         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1336         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1337         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1338             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1339         fprintf(vstats_file,"type= %c\n", av_get_pict_type_char(enc->coded_frame->pict_type));
1340     }
1341 }
1342
1343 static void print_report(AVFormatContext **output_files,
1344                          AVOutputStream **ost_table, int nb_ostreams,
1345                          int is_last_report)
1346 {
1347     char buf[1024];
1348     AVOutputStream *ost;
1349     AVFormatContext *oc;
1350     int64_t total_size;
1351     AVCodecContext *enc;
1352     int frame_number, vid, i;
1353     double bitrate, ti1, pts;
1354     static int64_t last_time = -1;
1355     static int qp_histogram[52];
1356
1357     if (!is_last_report) {
1358         int64_t cur_time;
1359         /* display the report every 0.5 seconds */
1360         cur_time = av_gettime();
1361         if (last_time == -1) {
1362             last_time = cur_time;
1363             return;
1364         }
1365         if ((cur_time - last_time) < 500000)
1366             return;
1367         last_time = cur_time;
1368     }
1369
1370
1371     oc = output_files[0];
1372
1373     total_size = url_fsize(oc->pb);
1374     if(total_size<0) // FIXME improve url_fsize() so it works with non seekable output too
1375         total_size= url_ftell(oc->pb);
1376
1377     buf[0] = '\0';
1378     ti1 = 1e10;
1379     vid = 0;
1380     for(i=0;i<nb_ostreams;i++) {
1381         ost = ost_table[i];
1382         enc = ost->st->codec;
1383         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1384             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ",
1385                      !ost->st->stream_copy ?
1386                      enc->coded_frame->quality/(float)FF_QP2LAMBDA : -1);
1387         }
1388         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1389             float t = (av_gettime()-timer_start) / 1000000.0;
1390
1391             frame_number = ost->frame_number;
1392             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1393                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0,
1394                      !ost->st->stream_copy ?
1395                      enc->coded_frame->quality/(float)FF_QP2LAMBDA : -1);
1396             if(is_last_report)
1397                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1398             if(qp_hist){
1399                 int j;
1400                 int qp= lrintf(enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1401                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1402                     qp_histogram[qp]++;
1403                 for(j=0; j<32; j++)
1404                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1405             }
1406             if (enc->flags&CODEC_FLAG_PSNR){
1407                 int j;
1408                 double error, error_sum=0;
1409                 double scale, scale_sum=0;
1410                 char type[3]= {'Y','U','V'};
1411                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1412                 for(j=0; j<3; j++){
1413                     if(is_last_report){
1414                         error= enc->error[j];
1415                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1416                     }else{
1417                         error= enc->coded_frame->error[j];
1418                         scale= enc->width*enc->height*255.0*255.0;
1419                     }
1420                     if(j) scale/=4;
1421                     error_sum += error;
1422                     scale_sum += scale;
1423                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1424                 }
1425                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1426             }
1427             vid = 1;
1428         }
1429         /* compute min output value */
1430         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1431         if ((pts < ti1) && (pts > 0))
1432             ti1 = pts;
1433     }
1434     if (ti1 < 0.01)
1435         ti1 = 0.01;
1436
1437     if (verbose || is_last_report) {
1438         bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1439
1440         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1441             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1442             (double)total_size / 1024, ti1, bitrate);
1443
1444         if (nb_frames_dup || nb_frames_drop)
1445           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1446                   nb_frames_dup, nb_frames_drop);
1447
1448         if (verbose >= 0)
1449             fprintf(stderr, "%s    \r", buf);
1450
1451         fflush(stderr);
1452     }
1453
1454     if (is_last_report && verbose >= 0){
1455         int64_t raw= audio_size + video_size + extra_size;
1456         fprintf(stderr, "\n");
1457         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1458                 video_size/1024.0,
1459                 audio_size/1024.0,
1460                 extra_size/1024.0,
1461                 100.0*(total_size - raw)/raw
1462         );
1463     }
1464 }
1465
1466 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1467 static int output_packet(AVInputStream *ist, int ist_index,
1468                          AVOutputStream **ost_table, int nb_ostreams,
1469                          const AVPacket *pkt)
1470 {
1471     AVFormatContext *os;
1472     AVOutputStream *ost;
1473     int ret, i;
1474     int got_picture;
1475     AVFrame picture;
1476     void *buffer_to_free;
1477     static unsigned int samples_size= 0;
1478     AVSubtitle subtitle, *subtitle_to_free;
1479     int64_t pkt_pts = AV_NOPTS_VALUE;
1480 #if CONFIG_AVFILTER
1481     int frame_available;
1482 #endif
1483
1484     AVPacket avpkt;
1485     int bps = av_get_bits_per_sample_fmt(ist->st->codec->sample_fmt)>>3;
1486
1487     if(ist->next_pts == AV_NOPTS_VALUE)
1488         ist->next_pts= ist->pts;
1489
1490     if (pkt == NULL) {
1491         /* EOF handling */
1492         av_init_packet(&avpkt);
1493         avpkt.data = NULL;
1494         avpkt.size = 0;
1495         goto handle_eof;
1496     } else {
1497         avpkt = *pkt;
1498     }
1499
1500     if(pkt->dts != AV_NOPTS_VALUE)
1501         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1502     if(pkt->pts != AV_NOPTS_VALUE)
1503         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1504
1505     //while we have more to decode or while the decoder did output something on EOF
1506     while (avpkt.size > 0 || (!pkt && ist->next_pts != ist->pts)) {
1507         uint8_t *data_buf, *decoded_data_buf;
1508         int data_size, decoded_data_size;
1509     handle_eof:
1510         ist->pts= ist->next_pts;
1511
1512         if(avpkt.size && avpkt.size != pkt->size &&
1513            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1514             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1515             ist->showed_multi_packet_warning=1;
1516         }
1517
1518         /* decode the packet if needed */
1519         decoded_data_buf = NULL; /* fail safe */
1520         decoded_data_size= 0;
1521         data_buf  = avpkt.data;
1522         data_size = avpkt.size;
1523         subtitle_to_free = NULL;
1524         if (ist->decoding_needed) {
1525             switch(ist->st->codec->codec_type) {
1526             case AVMEDIA_TYPE_AUDIO:{
1527                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1528                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1529                     av_free(samples);
1530                     samples= av_malloc(samples_size);
1531                 }
1532                 decoded_data_size= samples_size;
1533                     /* XXX: could avoid copy if PCM 16 bits with same
1534                        endianness as CPU */
1535                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1536                                             &avpkt);
1537                 if (ret < 0)
1538                     goto fail_decode;
1539                 avpkt.data += ret;
1540                 avpkt.size -= ret;
1541                 data_size   = ret;
1542                 /* Some bug in mpeg audio decoder gives */
1543                 /* decoded_data_size < 0, it seems they are overflows */
1544                 if (decoded_data_size <= 0) {
1545                     /* no audio frame */
1546                     continue;
1547                 }
1548                 decoded_data_buf = (uint8_t *)samples;
1549                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1550                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1551                 break;}
1552             case AVMEDIA_TYPE_VIDEO:
1553                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1554                     /* XXX: allocate picture correctly */
1555                     avcodec_get_frame_defaults(&picture);
1556                     ist->st->codec->reordered_opaque = pkt_pts;
1557                     pkt_pts = AV_NOPTS_VALUE;
1558
1559                     ret = avcodec_decode_video2(ist->st->codec,
1560                                                 &picture, &got_picture, &avpkt);
1561                     ist->st->quality= picture.quality;
1562                     if (ret < 0)
1563                         goto fail_decode;
1564                     if (!got_picture) {
1565                         /* no picture yet */
1566                         goto discard_packet;
1567                     }
1568                     ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, picture.reordered_opaque, ist->pts);
1569                     if (ist->st->codec->time_base.num != 0) {
1570                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1571                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1572                                           ist->st->codec->time_base.num * ticks) /
1573                             ist->st->codec->time_base.den;
1574                     }
1575                     avpkt.size = 0;
1576                     break;
1577             case AVMEDIA_TYPE_SUBTITLE:
1578                 ret = avcodec_decode_subtitle2(ist->st->codec,
1579                                                &subtitle, &got_picture, &avpkt);
1580                 if (ret < 0)
1581                     goto fail_decode;
1582                 if (!got_picture) {
1583                     goto discard_packet;
1584                 }
1585                 subtitle_to_free = &subtitle;
1586                 avpkt.size = 0;
1587                 break;
1588             default:
1589                 goto fail_decode;
1590             }
1591         } else {
1592             switch(ist->st->codec->codec_type) {
1593             case AVMEDIA_TYPE_AUDIO:
1594                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1595                     ist->st->codec->sample_rate;
1596                 break;
1597             case AVMEDIA_TYPE_VIDEO:
1598                 if (ist->st->codec->time_base.num != 0) {
1599                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1600                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1601                                       ist->st->codec->time_base.num * ticks) /
1602                         ist->st->codec->time_base.den;
1603                 }
1604                 break;
1605             }
1606             ret = avpkt.size;
1607             avpkt.size = 0;
1608         }
1609
1610         buffer_to_free = NULL;
1611         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1612             pre_process_video_frame(ist, (AVPicture *)&picture,
1613                                     &buffer_to_free);
1614         }
1615
1616 #if CONFIG_AVFILTER
1617         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ist->input_video_filter) {
1618             AVRational sar;
1619             if (ist->st->sample_aspect_ratio.num) sar = ist->st->sample_aspect_ratio;
1620             else                                  sar = ist->st->codec->sample_aspect_ratio;
1621             // add it to be filtered
1622             av_vsrc_buffer_add_frame(ist->input_video_filter, &picture,
1623                                      ist->pts,
1624                                      sar);
1625         }
1626 #endif
1627
1628         // preprocess audio (volume)
1629         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1630             if (audio_volume != 256) {
1631                 short *volp;
1632                 volp = samples;
1633                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1634                     int v = ((*volp) * audio_volume + 128) >> 8;
1635                     if (v < -32768) v = -32768;
1636                     if (v >  32767) v = 32767;
1637                     *volp++ = v;
1638                 }
1639             }
1640         }
1641
1642         /* frame rate emulation */
1643         if (rate_emu) {
1644             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1645             int64_t now = av_gettime() - ist->start;
1646             if (pts > now)
1647                 usleep(pts - now);
1648         }
1649 #if CONFIG_AVFILTER
1650         frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1651             !ist->output_video_filter || avfilter_poll_frame(ist->output_video_filter->inputs[0]);
1652 #endif
1653         /* if output time reached then transcode raw format,
1654            encode packets and output them */
1655         if (start_time == 0 || ist->pts >= start_time)
1656 #if CONFIG_AVFILTER
1657         while (frame_available) {
1658             AVRational ist_pts_tb;
1659             if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ist->output_video_filter)
1660                 get_filtered_video_frame(ist->output_video_filter, &picture, &ist->picref, &ist_pts_tb);
1661             if (ist->picref)
1662                 ist->pts = av_rescale_q(ist->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1663 #endif
1664             for(i=0;i<nb_ostreams;i++) {
1665                 int frame_size;
1666
1667                 ost = ost_table[i];
1668                 if (ost->source_index == ist_index) {
1669                     os = output_files[ost->file_index];
1670
1671                     /* set the input output pts pairs */
1672                     //ost->sync_ipts = (double)(ist->pts + input_files_ts_offset[ist->file_index] - start_time)/ AV_TIME_BASE;
1673
1674                     if (ost->encoding_needed) {
1675                         av_assert0(ist->decoding_needed);
1676                         switch(ost->st->codec->codec_type) {
1677                         case AVMEDIA_TYPE_AUDIO:
1678                             do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1679                             break;
1680                         case AVMEDIA_TYPE_VIDEO:
1681 #if CONFIG_AVFILTER
1682                             if (ist->picref->video)
1683                                 ost->st->codec->sample_aspect_ratio = ist->picref->video->pixel_aspect;
1684 #endif
1685                             do_video_out(os, ost, ist, &picture, &frame_size);
1686                             if (vstats_filename && frame_size)
1687                                 do_video_stats(os, ost, frame_size);
1688                             break;
1689                         case AVMEDIA_TYPE_SUBTITLE:
1690                             do_subtitle_out(os, ost, ist, &subtitle,
1691                                             pkt->pts);
1692                             break;
1693                         default:
1694                             abort();
1695                         }
1696                     } else {
1697                         AVFrame avframe; //FIXME/XXX remove this
1698                         AVPacket opkt;
1699                         int64_t ost_tb_start_time= av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1700
1701                         av_init_packet(&opkt);
1702
1703                         if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1704                             continue;
1705
1706                         /* no reencoding needed : output the packet directly */
1707                         /* force the input stream PTS */
1708
1709                         avcodec_get_frame_defaults(&avframe);
1710                         ost->st->codec->coded_frame= &avframe;
1711                         avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1712
1713                         if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1714                             audio_size += data_size;
1715                         else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1716                             video_size += data_size;
1717                             ost->sync_opts++;
1718                         }
1719
1720                         opkt.stream_index= ost->index;
1721                         if(pkt->pts != AV_NOPTS_VALUE)
1722                             opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1723                         else
1724                             opkt.pts= AV_NOPTS_VALUE;
1725
1726                         if (pkt->dts == AV_NOPTS_VALUE)
1727                             opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1728                         else
1729                             opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1730                         opkt.dts -= ost_tb_start_time;
1731
1732                         opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1733                         opkt.flags= pkt->flags;
1734
1735                         //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1736                         if(   ost->st->codec->codec_id != CODEC_ID_H264
1737                            && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1738                            && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1739                            ) {
1740                             if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1741                                 opkt.destruct= av_destruct_packet;
1742                         } else {
1743                             opkt.data = data_buf;
1744                             opkt.size = data_size;
1745                         }
1746
1747                         write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1748                         ost->st->codec->frame_number++;
1749                         ost->frame_number++;
1750                         av_free_packet(&opkt);
1751                     }
1752                 }
1753             }
1754
1755 #if CONFIG_AVFILTER
1756             frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1757                               ist->output_video_filter && avfilter_poll_frame(ist->output_video_filter->inputs[0]);
1758             if(ist->picref)
1759                 avfilter_unref_buffer(ist->picref);
1760         }
1761 #endif
1762         av_free(buffer_to_free);
1763         /* XXX: allocate the subtitles in the codec ? */
1764         if (subtitle_to_free) {
1765             avsubtitle_free(subtitle_to_free);
1766             subtitle_to_free = NULL;
1767         }
1768     }
1769  discard_packet:
1770     if (pkt == NULL) {
1771         /* EOF handling */
1772
1773         for(i=0;i<nb_ostreams;i++) {
1774             ost = ost_table[i];
1775             if (ost->source_index == ist_index) {
1776                 AVCodecContext *enc= ost->st->codec;
1777                 os = output_files[ost->file_index];
1778
1779                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1780                     continue;
1781                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1782                     continue;
1783
1784                 if (ost->encoding_needed) {
1785                     for(;;) {
1786                         AVPacket pkt;
1787                         int fifo_bytes;
1788                         av_init_packet(&pkt);
1789                         pkt.stream_index= ost->index;
1790
1791                         switch(ost->st->codec->codec_type) {
1792                         case AVMEDIA_TYPE_AUDIO:
1793                             fifo_bytes = av_fifo_size(ost->fifo);
1794                             ret = 0;
1795                             /* encode any samples remaining in fifo */
1796                             if (fifo_bytes > 0) {
1797                                 int osize = av_get_bits_per_sample_fmt(enc->sample_fmt) >> 3;
1798                                 int fs_tmp = enc->frame_size;
1799
1800                                 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1801                                 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1802                                     enc->frame_size = fifo_bytes / (osize * enc->channels);
1803                                 } else { /* pad */
1804                                     int frame_bytes = enc->frame_size*osize*enc->channels;
1805                                     if (allocated_audio_buf_size < frame_bytes)
1806                                         ffmpeg_exit(1);
1807                                     memset(audio_buf+fifo_bytes, 0, frame_bytes - fifo_bytes);
1808                                 }
1809
1810                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1811                                 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1812                                                           ost->st->time_base.num, enc->sample_rate);
1813                                 enc->frame_size = fs_tmp;
1814                             }
1815                             if(ret <= 0) {
1816                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1817                             }
1818                             if (ret < 0) {
1819                                 fprintf(stderr, "Audio encoding failed\n");
1820                                 ffmpeg_exit(1);
1821                             }
1822                             audio_size += ret;
1823                             pkt.flags |= AV_PKT_FLAG_KEY;
1824                             break;
1825                         case AVMEDIA_TYPE_VIDEO:
1826                             ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1827                             if (ret < 0) {
1828                                 fprintf(stderr, "Video encoding failed\n");
1829                                 ffmpeg_exit(1);
1830                             }
1831                             video_size += ret;
1832                             if(enc->coded_frame && enc->coded_frame->key_frame)
1833                                 pkt.flags |= AV_PKT_FLAG_KEY;
1834                             if (ost->logfile && enc->stats_out) {
1835                                 fprintf(ost->logfile, "%s", enc->stats_out);
1836                             }
1837                             break;
1838                         default:
1839                             ret=-1;
1840                         }
1841
1842                         if(ret<=0)
1843                             break;
1844                         pkt.data= bit_buffer;
1845                         pkt.size= ret;
1846                         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1847                             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1848                         write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1849                     }
1850                 }
1851             }
1852         }
1853     }
1854
1855     return 0;
1856  fail_decode:
1857     return -1;
1858 }
1859
1860 static void print_sdp(AVFormatContext **avc, int n)
1861 {
1862     char sdp[2048];
1863
1864     avf_sdp_create(avc, n, sdp, sizeof(sdp));
1865     printf("SDP:\n%s\n", sdp);
1866     fflush(stdout);
1867 }
1868
1869 static int copy_chapters(int infile, int outfile)
1870 {
1871     AVFormatContext *is = input_files[infile];
1872     AVFormatContext *os = output_files[outfile];
1873     int i;
1874
1875     for (i = 0; i < is->nb_chapters; i++) {
1876         AVChapter *in_ch = is->chapters[i], *out_ch;
1877         int64_t ts_off   = av_rescale_q(start_time - input_files_ts_offset[infile],
1878                                       AV_TIME_BASE_Q, in_ch->time_base);
1879         int64_t rt       = (recording_time == INT64_MAX) ? INT64_MAX :
1880                            av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
1881
1882
1883         if (in_ch->end < ts_off)
1884             continue;
1885         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
1886             break;
1887
1888         out_ch = av_mallocz(sizeof(AVChapter));
1889         if (!out_ch)
1890             return AVERROR(ENOMEM);
1891
1892         out_ch->id        = in_ch->id;
1893         out_ch->time_base = in_ch->time_base;
1894         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
1895         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
1896
1897         if (metadata_chapters_autocopy)
1898             av_metadata_copy(&out_ch->metadata, in_ch->metadata, 0);
1899
1900         os->nb_chapters++;
1901         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
1902         if (!os->chapters)
1903             return AVERROR(ENOMEM);
1904         os->chapters[os->nb_chapters - 1] = out_ch;
1905     }
1906     return 0;
1907 }
1908
1909 static void parse_forced_key_frames(char *kf, AVOutputStream *ost,
1910                                     AVCodecContext *avctx)
1911 {
1912     char *p;
1913     int n = 1, i;
1914     int64_t t;
1915
1916     for (p = kf; *p; p++)
1917         if (*p == ',')
1918             n++;
1919     ost->forced_kf_count = n;
1920     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1921     if (!ost->forced_kf_pts) {
1922         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1923         ffmpeg_exit(1);
1924     }
1925     for (i = 0; i < n; i++) {
1926         p = i ? strchr(p, ',') + 1 : kf;
1927         t = parse_time_or_die("force_key_frames", p, 1);
1928         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1929     }
1930 }
1931
1932 /*
1933  * The following code is the main loop of the file converter
1934  */
1935 static int transcode(AVFormatContext **output_files,
1936                      int nb_output_files,
1937                      AVFormatContext **input_files,
1938                      int nb_input_files,
1939                      AVStreamMap *stream_maps, int nb_stream_maps)
1940 {
1941     int ret = 0, i, j, k, n, nb_istreams = 0, nb_ostreams = 0;
1942     AVFormatContext *is, *os;
1943     AVCodecContext *codec, *icodec;
1944     AVOutputStream *ost, **ost_table = NULL;
1945     AVInputStream *ist, **ist_table = NULL;
1946     AVInputFile *file_table;
1947     char error[1024];
1948     int key;
1949     int want_sdp = 1;
1950     uint8_t no_packet[MAX_FILES]={0};
1951     int no_packet_count=0;
1952
1953     file_table= av_mallocz(nb_input_files * sizeof(AVInputFile));
1954     if (!file_table)
1955         goto fail;
1956
1957     /* input stream init */
1958     j = 0;
1959     for(i=0;i<nb_input_files;i++) {
1960         is = input_files[i];
1961         file_table[i].ist_index = j;
1962         file_table[i].nb_streams = is->nb_streams;
1963         j += is->nb_streams;
1964     }
1965     nb_istreams = j;
1966
1967     ist_table = av_mallocz(nb_istreams * sizeof(AVInputStream *));
1968     if (!ist_table)
1969         goto fail;
1970
1971     for(i=0;i<nb_istreams;i++) {
1972         ist = av_mallocz(sizeof(AVInputStream));
1973         if (!ist)
1974             goto fail;
1975         ist_table[i] = ist;
1976     }
1977     j = 0;
1978     for(i=0;i<nb_input_files;i++) {
1979         is = input_files[i];
1980         for(k=0;k<is->nb_streams;k++) {
1981             ist = ist_table[j++];
1982             ist->st = is->streams[k];
1983             ist->file_index = i;
1984             ist->index = k;
1985             ist->discard = 1; /* the stream is discarded by default
1986                                  (changed later) */
1987
1988             if (rate_emu) {
1989                 ist->start = av_gettime();
1990             }
1991         }
1992     }
1993
1994     /* output stream init */
1995     nb_ostreams = 0;
1996     for(i=0;i<nb_output_files;i++) {
1997         os = output_files[i];
1998         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1999             dump_format(output_files[i], i, output_files[i]->filename, 1);
2000             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
2001             ret = AVERROR(EINVAL);
2002             goto fail;
2003         }
2004         nb_ostreams += os->nb_streams;
2005     }
2006     if (nb_stream_maps > 0 && nb_stream_maps != nb_ostreams) {
2007         fprintf(stderr, "Number of stream maps must match number of output streams\n");
2008         ret = AVERROR(EINVAL);
2009         goto fail;
2010     }
2011
2012     /* Sanity check the mapping args -- do the input files & streams exist? */
2013     for(i=0;i<nb_stream_maps;i++) {
2014         int fi = stream_maps[i].file_index;
2015         int si = stream_maps[i].stream_index;
2016
2017         if (fi < 0 || fi > nb_input_files - 1 ||
2018             si < 0 || si > file_table[fi].nb_streams - 1) {
2019             fprintf(stderr,"Could not find input stream #%d.%d\n", fi, si);
2020             ret = AVERROR(EINVAL);
2021             goto fail;
2022         }
2023         fi = stream_maps[i].sync_file_index;
2024         si = stream_maps[i].sync_stream_index;
2025         if (fi < 0 || fi > nb_input_files - 1 ||
2026             si < 0 || si > file_table[fi].nb_streams - 1) {
2027             fprintf(stderr,"Could not find sync stream #%d.%d\n", fi, si);
2028             ret = AVERROR(EINVAL);
2029             goto fail;
2030         }
2031     }
2032
2033     ost_table = av_mallocz(sizeof(AVOutputStream *) * nb_ostreams);
2034     if (!ost_table)
2035         goto fail;
2036     n = 0;
2037     for(k=0;k<nb_output_files;k++) {
2038         os = output_files[k];
2039         for(i=0;i<os->nb_streams;i++,n++) {
2040             int found;
2041             ost = ost_table[n] = output_streams_for_file[k][i];
2042             ost->st = os->streams[i];
2043             if (nb_stream_maps > 0) {
2044                 ost->source_index = file_table[stream_maps[n].file_index].ist_index +
2045                     stream_maps[n].stream_index;
2046
2047                 /* Sanity check that the stream types match */
2048                 if (ist_table[ost->source_index]->st->codec->codec_type != ost->st->codec->codec_type) {
2049                     int i= ost->file_index;
2050                     dump_format(output_files[i], i, output_files[i]->filename, 1);
2051                     fprintf(stderr, "Codec type mismatch for mapping #%d.%d -> #%d.%d\n",
2052                         stream_maps[n].file_index, stream_maps[n].stream_index,
2053                         ost->file_index, ost->index);
2054                     ffmpeg_exit(1);
2055                 }
2056
2057             } else {
2058                 int best_nb_frames=-1;
2059                 /* get corresponding input stream index : we select the first one with the right type */
2060                 found = 0;
2061                 for(j=0;j<nb_istreams;j++) {
2062                     int skip=0;
2063                     ist = ist_table[j];
2064                     if(opt_programid){
2065                         int pi,si;
2066                         AVFormatContext *f= input_files[ ist->file_index ];
2067                         skip=1;
2068                         for(pi=0; pi<f->nb_programs; pi++){
2069                             AVProgram *p= f->programs[pi];
2070                             if(p->id == opt_programid)
2071                                 for(si=0; si<p->nb_stream_indexes; si++){
2072                                     if(f->streams[ p->stream_index[si] ] == ist->st)
2073                                         skip=0;
2074                                 }
2075                         }
2076                     }
2077                     if (ist->discard && ist->st->discard != AVDISCARD_ALL && !skip &&
2078                         ist->st->codec->codec_type == ost->st->codec->codec_type) {
2079                         if(best_nb_frames < ist->st->codec_info_nb_frames){
2080                             best_nb_frames= ist->st->codec_info_nb_frames;
2081                             ost->source_index = j;
2082                             found = 1;
2083                         }
2084                     }
2085                 }
2086
2087                 if (!found) {
2088                     if(! opt_programid) {
2089                         /* try again and reuse existing stream */
2090                         for(j=0;j<nb_istreams;j++) {
2091                             ist = ist_table[j];
2092                             if (   ist->st->codec->codec_type == ost->st->codec->codec_type
2093                                 && ist->st->discard != AVDISCARD_ALL) {
2094                                 ost->source_index = j;
2095                                 found = 1;
2096                             }
2097                         }
2098                     }
2099                     if (!found) {
2100                         int i= ost->file_index;
2101                         dump_format(output_files[i], i, output_files[i]->filename, 1);
2102                         fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",
2103                                 ost->file_index, ost->index);
2104                         ffmpeg_exit(1);
2105                     }
2106                 }
2107             }
2108             ist = ist_table[ost->source_index];
2109             ist->discard = 0;
2110             ost->sync_ist = (nb_stream_maps > 0) ?
2111                 ist_table[file_table[stream_maps[n].sync_file_index].ist_index +
2112                          stream_maps[n].sync_stream_index] : ist;
2113         }
2114     }
2115
2116     /* for each output stream, we compute the right encoding parameters */
2117     for(i=0;i<nb_ostreams;i++) {
2118         ost = ost_table[i];
2119         os = output_files[ost->file_index];
2120         ist = ist_table[ost->source_index];
2121
2122         codec = ost->st->codec;
2123         icodec = ist->st->codec;
2124
2125         if (metadata_streams_autocopy)
2126             av_metadata_copy(&ost->st->metadata, ist->st->metadata,
2127                              AV_METADATA_DONT_OVERWRITE);
2128
2129         ost->st->disposition = ist->st->disposition;
2130         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2131         codec->chroma_sample_location = icodec->chroma_sample_location;
2132
2133         if (ost->st->stream_copy) {
2134             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2135
2136             if (extra_size > INT_MAX)
2137                 goto fail;
2138
2139             /* if stream_copy is selected, no need to decode or encode */
2140             codec->codec_id = icodec->codec_id;
2141             codec->codec_type = icodec->codec_type;
2142
2143             if(!codec->codec_tag){
2144                 if(   !os->oformat->codec_tag
2145                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2146                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2147                     codec->codec_tag = icodec->codec_tag;
2148             }
2149
2150             codec->bit_rate = icodec->bit_rate;
2151             codec->rc_max_rate    = icodec->rc_max_rate;
2152             codec->rc_buffer_size = icodec->rc_buffer_size;
2153             codec->extradata= av_mallocz(extra_size);
2154             if (!codec->extradata)
2155                 goto fail;
2156             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2157             codec->extradata_size= icodec->extradata_size;
2158             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){
2159                 codec->time_base = icodec->time_base;
2160                 codec->time_base.num *= icodec->ticks_per_frame;
2161                 av_reduce(&codec->time_base.num, &codec->time_base.den,
2162                           codec->time_base.num, codec->time_base.den, INT_MAX);
2163             }else
2164                 codec->time_base = ist->st->time_base;
2165             switch(codec->codec_type) {
2166             case AVMEDIA_TYPE_AUDIO:
2167                 if(audio_volume != 256) {
2168                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2169                     ffmpeg_exit(1);
2170                 }
2171                 codec->channel_layout = icodec->channel_layout;
2172                 codec->sample_rate = icodec->sample_rate;
2173                 codec->channels = icodec->channels;
2174                 codec->frame_size = icodec->frame_size;
2175                 codec->block_align= icodec->block_align;
2176                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2177                     codec->block_align= 0;
2178                 if(codec->codec_id == CODEC_ID_AC3)
2179                     codec->block_align= 0;
2180                 break;
2181             case AVMEDIA_TYPE_VIDEO:
2182                 codec->pix_fmt = icodec->pix_fmt;
2183                 codec->width = icodec->width;
2184                 codec->height = icodec->height;
2185                 codec->has_b_frames = icodec->has_b_frames;
2186                 break;
2187             case AVMEDIA_TYPE_SUBTITLE:
2188                 codec->width = icodec->width;
2189                 codec->height = icodec->height;
2190                 break;
2191             default:
2192                 abort();
2193             }
2194         } else {
2195             switch(codec->codec_type) {
2196             case AVMEDIA_TYPE_AUDIO:
2197                 ost->fifo= av_fifo_alloc(1024);
2198                 if(!ost->fifo)
2199                     goto fail;
2200                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2201                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2202                 icodec->request_channels = codec->channels;
2203                 ist->decoding_needed = 1;
2204                 ost->encoding_needed = 1;
2205                 ost->resample_sample_fmt  = icodec->sample_fmt;
2206                 ost->resample_sample_rate = icodec->sample_rate;
2207                 ost->resample_channels    = icodec->channels;
2208                 break;
2209             case AVMEDIA_TYPE_VIDEO:
2210                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2211                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2212                     ffmpeg_exit(1);
2213                 }
2214                 ost->video_resample = (codec->width != icodec->width   ||
2215                                        codec->height != icodec->height ||
2216                         (codec->pix_fmt != icodec->pix_fmt));
2217                 if (ost->video_resample) {
2218 #if !CONFIG_AVFILTER
2219                     avcodec_get_frame_defaults(&ost->pict_tmp);
2220                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2221                                          codec->width, codec->height)) {
2222                         fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
2223                         ffmpeg_exit(1);
2224                     }
2225                     sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
2226                     ost->img_resample_ctx = sws_getContext(
2227                         icodec->width,
2228                         icodec->height,
2229                             icodec->pix_fmt,
2230                             codec->width,
2231                             codec->height,
2232                             codec->pix_fmt,
2233                             sws_flags, NULL, NULL, NULL);
2234                     if (ost->img_resample_ctx == NULL) {
2235                         fprintf(stderr, "Cannot get resampling context\n");
2236                         ffmpeg_exit(1);
2237                     }
2238
2239                     ost->original_height = icodec->height;
2240                     ost->original_width  = icodec->width;
2241 #endif
2242                     codec->bits_per_raw_sample= 0;
2243                 }
2244                 ost->resample_height = icodec->height;
2245                 ost->resample_width  = icodec->width;
2246                 ost->resample_pix_fmt= icodec->pix_fmt;
2247                 ost->encoding_needed = 1;
2248                 ist->decoding_needed = 1;
2249
2250 #if CONFIG_AVFILTER
2251                 if (configure_filters(ist, ost)) {
2252                     fprintf(stderr, "Error opening filters!\n");
2253                     exit(1);
2254                 }
2255 #endif
2256                 break;
2257             case AVMEDIA_TYPE_SUBTITLE:
2258                 ost->encoding_needed = 1;
2259                 ist->decoding_needed = 1;
2260                 break;
2261             default:
2262                 abort();
2263                 break;
2264             }
2265             /* two pass mode */
2266             if (ost->encoding_needed &&
2267                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2268                 char logfilename[1024];
2269                 FILE *f;
2270
2271                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2272                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2273                          i);
2274                 if (codec->flags & CODEC_FLAG_PASS1) {
2275                     f = fopen(logfilename, "wb");
2276                     if (!f) {
2277                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2278                         ffmpeg_exit(1);
2279                     }
2280                     ost->logfile = f;
2281                 } else {
2282                     char  *logbuffer;
2283                     size_t logbuffer_size;
2284                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2285                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2286                         ffmpeg_exit(1);
2287                     }
2288                     codec->stats_in = logbuffer;
2289                 }
2290             }
2291         }
2292         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2293             int size= codec->width * codec->height;
2294             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2295         }
2296     }
2297
2298     if (!bit_buffer)
2299         bit_buffer = av_malloc(bit_buffer_size);
2300     if (!bit_buffer) {
2301         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2302                 bit_buffer_size);
2303         ret = AVERROR(ENOMEM);
2304         goto fail;
2305     }
2306
2307     /* open each encoder */
2308     for(i=0;i<nb_ostreams;i++) {
2309         ost = ost_table[i];
2310         if (ost->encoding_needed) {
2311             AVCodec *codec = i < nb_output_codecs ? output_codecs[i] : NULL;
2312             AVCodecContext *dec = ist_table[ost->source_index]->st->codec;
2313             if (!codec)
2314                 codec = avcodec_find_encoder(ost->st->codec->codec_id);
2315             if (!codec) {
2316                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2317                          ost->st->codec->codec_id, ost->file_index, ost->index);
2318                 ret = AVERROR(EINVAL);
2319                 goto dump_format;
2320             }
2321             if (dec->subtitle_header) {
2322                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2323                 if (!ost->st->codec->subtitle_header) {
2324                     ret = AVERROR(ENOMEM);
2325                     goto dump_format;
2326                 }
2327                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2328                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2329             }
2330             if (avcodec_open(ost->st->codec, codec) < 0) {
2331                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2332                         ost->file_index, ost->index);
2333                 ret = AVERROR(EINVAL);
2334                 goto dump_format;
2335             }
2336             extra_size += ost->st->codec->extradata_size;
2337         }
2338     }
2339
2340     /* open each decoder */
2341     for(i=0;i<nb_istreams;i++) {
2342         ist = ist_table[i];
2343         if (ist->decoding_needed) {
2344             AVCodec *codec = i < nb_input_codecs ? input_codecs[i] : NULL;
2345             if (!codec)
2346                 codec = avcodec_find_decoder(ist->st->codec->codec_id);
2347             if (!codec) {
2348                 snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
2349                         ist->st->codec->codec_id, ist->file_index, ist->index);
2350                 ret = AVERROR(EINVAL);
2351                 goto dump_format;
2352             }
2353             if (avcodec_open(ist->st->codec, codec) < 0) {
2354                 snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
2355                         ist->file_index, ist->index);
2356                 ret = AVERROR(EINVAL);
2357                 goto dump_format;
2358             }
2359             //if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2360             //    ist->st->codec->flags |= CODEC_FLAG_REPEAT_FIELD;
2361         }
2362     }
2363
2364     /* init pts */
2365     for(i=0;i<nb_istreams;i++) {
2366         AVStream *st;
2367         ist = ist_table[i];
2368         st= ist->st;
2369         ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
2370         ist->next_pts = AV_NOPTS_VALUE;
2371         init_pts_correction(&ist->pts_ctx);
2372         ist->is_start = 1;
2373     }
2374
2375     /* set meta data information from input file if required */
2376     for (i=0;i<nb_meta_data_maps;i++) {
2377         AVFormatContext *files[2];
2378         AVMetadata      **meta[2];
2379         int j;
2380
2381 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
2382         if ((index) < 0 || (index) >= (nb_elems)) {\
2383             snprintf(error, sizeof(error), "Invalid %s index %d while processing metadata maps\n",\
2384                      (desc), (index));\
2385             ret = AVERROR(EINVAL);\
2386             goto dump_format;\
2387         }
2388
2389         int out_file_index = meta_data_maps[i][0].file;
2390         int in_file_index = meta_data_maps[i][1].file;
2391         if (in_file_index < 0 || out_file_index < 0)
2392             continue;
2393         METADATA_CHECK_INDEX(out_file_index, nb_output_files, "output file")
2394         METADATA_CHECK_INDEX(in_file_index, nb_input_files, "input file")
2395
2396         files[0] = output_files[out_file_index];
2397         files[1] = input_files[in_file_index];
2398
2399         for (j = 0; j < 2; j++) {
2400             AVMetaDataMap *map = &meta_data_maps[i][j];
2401
2402             switch (map->type) {
2403             case 'g':
2404                 meta[j] = &files[j]->metadata;
2405                 break;
2406             case 's':
2407                 METADATA_CHECK_INDEX(map->index, files[j]->nb_streams, "stream")
2408                 meta[j] = &files[j]->streams[map->index]->metadata;
2409                 break;
2410             case 'c':
2411                 METADATA_CHECK_INDEX(map->index, files[j]->nb_chapters, "chapter")
2412                 meta[j] = &files[j]->chapters[map->index]->metadata;
2413                 break;
2414             case 'p':
2415                 METADATA_CHECK_INDEX(map->index, files[j]->nb_programs, "program")
2416                 meta[j] = &files[j]->programs[map->index]->metadata;
2417                 break;
2418             }
2419         }
2420
2421         av_metadata_copy(meta[0], *meta[1], AV_METADATA_DONT_OVERWRITE);
2422     }
2423
2424     /* copy global metadata by default */
2425     if (metadata_global_autocopy) {
2426
2427         for (i = 0; i < nb_output_files; i++)
2428             av_metadata_copy(&output_files[i]->metadata, input_files[0]->metadata,
2429                              AV_METADATA_DONT_OVERWRITE);
2430     }
2431
2432     /* copy chapters according to chapter maps */
2433     for (i = 0; i < nb_chapter_maps; i++) {
2434         int infile  = chapter_maps[i].in_file;
2435         int outfile = chapter_maps[i].out_file;
2436
2437         if (infile < 0 || outfile < 0)
2438             continue;
2439         if (infile >= nb_input_files) {
2440             snprintf(error, sizeof(error), "Invalid input file index %d in chapter mapping.\n", infile);
2441             ret = AVERROR(EINVAL);
2442             goto dump_format;
2443         }
2444         if (outfile >= nb_output_files) {
2445             snprintf(error, sizeof(error), "Invalid output file index %d in chapter mapping.\n",outfile);
2446             ret = AVERROR(EINVAL);
2447             goto dump_format;
2448         }
2449         copy_chapters(infile, outfile);
2450     }
2451
2452     /* copy chapters from the first input file that has them*/
2453     if (!nb_chapter_maps)
2454         for (i = 0; i < nb_input_files; i++) {
2455             if (!input_files[i]->nb_chapters)
2456                 continue;
2457
2458             for (j = 0; j < nb_output_files; j++)
2459                 if ((ret = copy_chapters(i, j)) < 0)
2460                     goto dump_format;
2461             break;
2462         }
2463
2464     /* open files and write file headers */
2465     for(i=0;i<nb_output_files;i++) {
2466         os = output_files[i];
2467         if (av_write_header(os) < 0) {
2468             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2469             ret = AVERROR(EINVAL);
2470             goto dump_format;
2471         }
2472         if (strcmp(output_files[i]->oformat->name, "rtp")) {
2473             want_sdp = 0;
2474         }
2475     }
2476
2477  dump_format:
2478     /* dump the file output parameters - cannot be done before in case
2479        of stream copy */
2480     for(i=0;i<nb_output_files;i++) {
2481         dump_format(output_files[i], i, output_files[i]->filename, 1);
2482     }
2483
2484     /* dump the stream mapping */
2485     if (verbose >= 0) {
2486         fprintf(stderr, "Stream mapping:\n");
2487         for(i=0;i<nb_ostreams;i++) {
2488             ost = ost_table[i];
2489             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2490                     ist_table[ost->source_index]->file_index,
2491                     ist_table[ost->source_index]->index,
2492                     ost->file_index,
2493                     ost->index);
2494             if (ost->sync_ist != ist_table[ost->source_index])
2495                 fprintf(stderr, " [sync #%d.%d]",
2496                         ost->sync_ist->file_index,
2497                         ost->sync_ist->index);
2498             fprintf(stderr, "\n");
2499         }
2500     }
2501
2502     if (ret) {
2503         fprintf(stderr, "%s\n", error);
2504         goto fail;
2505     }
2506
2507     if (want_sdp) {
2508         print_sdp(output_files, nb_output_files);
2509     }
2510
2511     if (!using_stdin && verbose >= 0) {
2512         fprintf(stderr, "Press [q] to stop encoding\n");
2513         url_set_interrupt_cb(decode_interrupt_cb);
2514     }
2515     term_init();
2516
2517     timer_start = av_gettime();
2518
2519     for(; received_sigterm == 0;) {
2520         int file_index, ist_index;
2521         AVPacket pkt;
2522         double ipts_min;
2523         double opts_min;
2524
2525     redo:
2526         ipts_min= 1e100;
2527         opts_min= 1e100;
2528         /* if 'q' pressed, exits */
2529         if (!using_stdin) {
2530             if (q_pressed)
2531                 break;
2532             /* read_key() returns 0 on EOF */
2533             key = read_key();
2534             if (key == 'q')
2535                 break;
2536         }
2537
2538         /* select the stream that we must read now by looking at the
2539            smallest output pts */
2540         file_index = -1;
2541         for(i=0;i<nb_ostreams;i++) {
2542             double ipts, opts;
2543             ost = ost_table[i];
2544             os = output_files[ost->file_index];
2545             ist = ist_table[ost->source_index];
2546             if(ist->is_past_recording_time || no_packet[ist->file_index])
2547                 continue;
2548                 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2549             ipts = (double)ist->pts;
2550             if (!file_table[ist->file_index].eof_reached){
2551                 if(ipts < ipts_min) {
2552                     ipts_min = ipts;
2553                     if(input_sync ) file_index = ist->file_index;
2554                 }
2555                 if(opts < opts_min) {
2556                     opts_min = opts;
2557                     if(!input_sync) file_index = ist->file_index;
2558                 }
2559             }
2560             if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
2561                 file_index= -1;
2562                 break;
2563             }
2564         }
2565         /* if none, if is finished */
2566         if (file_index < 0) {
2567             if(no_packet_count){
2568                 no_packet_count=0;
2569                 memset(no_packet, 0, sizeof(no_packet));
2570                 usleep(10000);
2571                 continue;
2572             }
2573             break;
2574         }
2575
2576         /* finish if limit size exhausted */
2577         if (limit_filesize != 0 && limit_filesize <= url_ftell(output_files[0]->pb))
2578             break;
2579
2580         /* read a frame from it and output it in the fifo */
2581         is = input_files[file_index];
2582         ret= av_read_frame(is, &pkt);
2583         if(ret == AVERROR(EAGAIN)){
2584             no_packet[file_index]=1;
2585             no_packet_count++;
2586             continue;
2587         }
2588         if (ret < 0) {
2589             file_table[file_index].eof_reached = 1;
2590             if (opt_shortest)
2591                 break;
2592             else
2593                 continue;
2594         }
2595
2596         no_packet_count=0;
2597         memset(no_packet, 0, sizeof(no_packet));
2598
2599         if (do_pkt_dump) {
2600             av_pkt_dump_log(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump);
2601         }
2602         /* the following test is needed in case new streams appear
2603            dynamically in stream : we ignore them */
2604         if (pkt.stream_index >= file_table[file_index].nb_streams)
2605             goto discard_packet;
2606         ist_index = file_table[file_index].ist_index + pkt.stream_index;
2607         ist = ist_table[ist_index];
2608         if (ist->discard)
2609             goto discard_packet;
2610
2611         if (pkt.dts != AV_NOPTS_VALUE)
2612             pkt.dts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2613         if (pkt.pts != AV_NOPTS_VALUE)
2614             pkt.pts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2615
2616         if (pkt.stream_index < nb_input_files_ts_scale[file_index]
2617             && input_files_ts_scale[file_index][pkt.stream_index]){
2618             if(pkt.pts != AV_NOPTS_VALUE)
2619                 pkt.pts *= input_files_ts_scale[file_index][pkt.stream_index];
2620             if(pkt.dts != AV_NOPTS_VALUE)
2621                 pkt.dts *= input_files_ts_scale[file_index][pkt.stream_index];
2622         }
2623
2624 //        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);
2625         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2626             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2627             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2628             int64_t delta= pkt_dts - ist->next_pts;
2629             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2630                 input_files_ts_offset[ist->file_index]-= delta;
2631                 if (verbose > 2)
2632                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n", delta, input_files_ts_offset[ist->file_index]);
2633                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2634                 if(pkt.pts != AV_NOPTS_VALUE)
2635                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2636             }
2637         }
2638
2639         /* finish if recording time exhausted */
2640         if (recording_time != INT64_MAX &&
2641             av_compare_ts(pkt.pts, ist->st->time_base, recording_time + start_time, (AVRational){1, 1000000}) >= 0) {
2642             ist->is_past_recording_time = 1;
2643             goto discard_packet;
2644         }
2645
2646         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->index, pkt.size);
2647         if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
2648
2649             if (verbose >= 0)
2650                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2651                         ist->file_index, ist->index);
2652             if (exit_on_error)
2653                 ffmpeg_exit(1);
2654             av_free_packet(&pkt);
2655             goto redo;
2656         }
2657
2658     discard_packet:
2659         av_free_packet(&pkt);
2660
2661         /* dump report by using the output first video and audio streams */
2662         print_report(output_files, ost_table, nb_ostreams, 0);
2663     }
2664
2665     /* at the end of stream, we must flush the decoder buffers */
2666     for(i=0;i<nb_istreams;i++) {
2667         ist = ist_table[i];
2668         if (ist->decoding_needed) {
2669             output_packet(ist, i, ost_table, nb_ostreams, NULL);
2670         }
2671     }
2672
2673     term_exit();
2674
2675     /* write the trailer if needed and close file */
2676     for(i=0;i<nb_output_files;i++) {
2677         os = output_files[i];
2678         av_write_trailer(os);
2679     }
2680
2681     /* dump report by using the first video and audio streams */
2682     print_report(output_files, ost_table, nb_ostreams, 1);
2683
2684     /* close each encoder */
2685     for(i=0;i<nb_ostreams;i++) {
2686         ost = ost_table[i];
2687         if (ost->encoding_needed) {
2688             av_freep(&ost->st->codec->stats_in);
2689             avcodec_close(ost->st->codec);
2690         }
2691     }
2692
2693     /* close each decoder */
2694     for(i=0;i<nb_istreams;i++) {
2695         ist = ist_table[i];
2696         if (ist->decoding_needed) {
2697             avcodec_close(ist->st->codec);
2698         }
2699     }
2700 #if CONFIG_AVFILTER
2701     avfilter_graph_free(&graph);
2702 #endif
2703
2704     /* finished ! */
2705     ret = 0;
2706
2707  fail:
2708     av_freep(&bit_buffer);
2709     av_free(file_table);
2710
2711     if (ist_table) {
2712         for(i=0;i<nb_istreams;i++) {
2713             ist = ist_table[i];
2714             av_free(ist);
2715         }
2716         av_free(ist_table);
2717     }
2718     if (ost_table) {
2719         for(i=0;i<nb_ostreams;i++) {
2720             ost = ost_table[i];
2721             if (ost) {
2722                 if (ost->st->stream_copy)
2723                     av_freep(&ost->st->codec->extradata);
2724                 if (ost->logfile) {
2725                     fclose(ost->logfile);
2726                     ost->logfile = NULL;
2727                 }
2728                 av_fifo_free(ost->fifo); /* works even if fifo is not
2729                                              initialized but set to zero */
2730                 av_freep(&ost->st->codec->subtitle_header);
2731                 av_free(ost->pict_tmp.data[0]);
2732                 av_free(ost->forced_kf_pts);
2733                 if (ost->video_resample)
2734                     sws_freeContext(ost->img_resample_ctx);
2735                 if (ost->resample)
2736                     audio_resample_close(ost->resample);
2737                 if (ost->reformat_ctx)
2738                     av_audio_convert_free(ost->reformat_ctx);
2739                 av_free(ost);
2740             }
2741         }
2742         av_free(ost_table);
2743     }
2744     return ret;
2745 }
2746
2747 static void opt_format(const char *arg)
2748 {
2749     last_asked_format = arg;
2750 }
2751
2752 static void opt_video_rc_override_string(const char *arg)
2753 {
2754     video_rc_override_string = arg;
2755 }
2756
2757 static int opt_me_threshold(const char *opt, const char *arg)
2758 {
2759     me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2760     return 0;
2761 }
2762
2763 static int opt_verbose(const char *opt, const char *arg)
2764 {
2765     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2766     return 0;
2767 }
2768
2769 static int opt_frame_rate(const char *opt, const char *arg)
2770 {
2771     if (av_parse_video_rate(&frame_rate, arg) < 0) {
2772         fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2773         ffmpeg_exit(1);
2774     }
2775     return 0;
2776 }
2777
2778 static int opt_bitrate(const char *opt, const char *arg)
2779 {
2780     int codec_type = opt[0]=='a' ? AVMEDIA_TYPE_AUDIO : AVMEDIA_TYPE_VIDEO;
2781
2782     opt_default(opt, arg);
2783
2784     if (av_get_int(avcodec_opts[codec_type], "b", NULL) < 1000)
2785         fprintf(stderr, "WARNING: The bitrate parameter is set too low. It takes bits/s as argument, not kbits/s\n");
2786
2787     return 0;
2788 }
2789
2790 static int opt_frame_crop(const char *opt, const char *arg)
2791 {
2792     fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
2793     return AVERROR(EINVAL);
2794 }
2795
2796 static void opt_frame_size(const char *arg)
2797 {
2798     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2799         fprintf(stderr, "Incorrect frame size\n");
2800         ffmpeg_exit(1);
2801     }
2802 }
2803
2804 static int opt_pad(const char *opt, const char *arg) {
2805     fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2806     return -1;
2807 }
2808
2809 static void opt_frame_pix_fmt(const char *arg)
2810 {
2811     if (strcmp(arg, "list")) {
2812         frame_pix_fmt = av_get_pix_fmt(arg);
2813         if (frame_pix_fmt == PIX_FMT_NONE) {
2814             fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2815             ffmpeg_exit(1);
2816         }
2817     } else {
2818         show_pix_fmts();
2819         ffmpeg_exit(0);
2820     }
2821 }
2822
2823 static void opt_frame_aspect_ratio(const char *arg)
2824 {
2825     int x = 0, y = 0;
2826     double ar = 0;
2827     const char *p;
2828     char *end;
2829
2830     p = strchr(arg, ':');
2831     if (p) {
2832         x = strtol(arg, &end, 10);
2833         if (end == p)
2834             y = strtol(end+1, &end, 10);
2835         if (x > 0 && y > 0)
2836             ar = (double)x / (double)y;
2837     } else
2838         ar = strtod(arg, NULL);
2839
2840     if (!ar) {
2841         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2842         ffmpeg_exit(1);
2843     }
2844     frame_aspect_ratio = ar;
2845 }
2846
2847 static int opt_metadata(const char *opt, const char *arg)
2848 {
2849     char *mid= strchr(arg, '=');
2850
2851     if(!mid){
2852         fprintf(stderr, "Missing =\n");
2853         ffmpeg_exit(1);
2854     }
2855     *mid++= 0;
2856
2857     av_metadata_set2(&metadata, arg, mid, 0);
2858
2859     return 0;
2860 }
2861
2862 static void opt_qscale(const char *arg)
2863 {
2864     video_qscale = atof(arg);
2865     if (video_qscale <= 0 ||
2866         video_qscale > 255) {
2867         fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2868         ffmpeg_exit(1);
2869     }
2870 }
2871
2872 static void opt_top_field_first(const char *arg)
2873 {
2874     top_field_first= atoi(arg);
2875 }
2876
2877 static int opt_thread_count(const char *opt, const char *arg)
2878 {
2879     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2880 #if !HAVE_THREADS
2881     if (verbose >= 0)
2882         fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2883 #endif
2884     return 0;
2885 }
2886
2887 static void opt_audio_sample_fmt(const char *arg)
2888 {
2889     if (strcmp(arg, "list")) {
2890         audio_sample_fmt = av_get_sample_fmt(arg);
2891         if (audio_sample_fmt == AV_SAMPLE_FMT_NONE) {
2892             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg);
2893             ffmpeg_exit(1);
2894         }
2895     } else {
2896         list_fmts(av_get_sample_fmt_string, AV_SAMPLE_FMT_NB);
2897         ffmpeg_exit(0);
2898     }
2899 }
2900
2901 static int opt_audio_rate(const char *opt, const char *arg)
2902 {
2903     audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2904     return 0;
2905 }
2906
2907 static int opt_audio_channels(const char *opt, const char *arg)
2908 {
2909     audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2910     return 0;
2911 }
2912
2913 static void opt_video_channel(const char *arg)
2914 {
2915     video_channel = strtol(arg, NULL, 0);
2916 }
2917
2918 static void opt_video_standard(const char *arg)
2919 {
2920     video_standard = av_strdup(arg);
2921 }
2922
2923 static void opt_codec(int *pstream_copy, char **pcodec_name,
2924                       int codec_type, const char *arg)
2925 {
2926     av_freep(pcodec_name);
2927     if (!strcmp(arg, "copy")) {
2928         *pstream_copy = 1;
2929     } else {
2930         *pcodec_name = av_strdup(arg);
2931     }
2932 }
2933
2934 static void opt_audio_codec(const char *arg)
2935 {
2936     opt_codec(&audio_stream_copy, &audio_codec_name, AVMEDIA_TYPE_AUDIO, arg);
2937 }
2938
2939 static void opt_video_codec(const char *arg)
2940 {
2941     opt_codec(&video_stream_copy, &video_codec_name, AVMEDIA_TYPE_VIDEO, arg);
2942 }
2943
2944 static void opt_subtitle_codec(const char *arg)
2945 {
2946     opt_codec(&subtitle_stream_copy, &subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, arg);
2947 }
2948
2949 static int opt_codec_tag(const char *opt, const char *arg)
2950 {
2951     char *tail;
2952     uint32_t *codec_tag;
2953
2954     codec_tag = !strcmp(opt, "atag") ? &audio_codec_tag :
2955                 !strcmp(opt, "vtag") ? &video_codec_tag :
2956                 !strcmp(opt, "stag") ? &subtitle_codec_tag : NULL;
2957     if (!codec_tag)
2958         return -1;
2959
2960     *codec_tag = strtol(arg, &tail, 0);
2961     if (!tail || *tail)
2962         *codec_tag = AV_RL32(arg);
2963
2964     return 0;
2965 }
2966
2967 static void opt_map(const char *arg)
2968 {
2969     AVStreamMap *m;
2970     char *p;
2971
2972     stream_maps = grow_array(stream_maps, sizeof(*stream_maps), &nb_stream_maps, nb_stream_maps + 1);
2973     m = &stream_maps[nb_stream_maps-1];
2974
2975     m->file_index = strtol(arg, &p, 0);
2976     if (*p)
2977         p++;
2978
2979     m->stream_index = strtol(p, &p, 0);
2980     if (*p) {
2981         p++;
2982         m->sync_file_index = strtol(p, &p, 0);
2983         if (*p)
2984             p++;
2985         m->sync_stream_index = strtol(p, &p, 0);
2986     } else {
2987         m->sync_file_index = m->file_index;
2988         m->sync_stream_index = m->stream_index;
2989     }
2990 }
2991
2992 static void parse_meta_type(char *arg, char *type, int *index, char **endptr)
2993 {
2994     *endptr = arg;
2995     if (*arg == ',') {
2996         *type = *(++arg);
2997         switch (*arg) {
2998         case 'g':
2999             break;
3000         case 's':
3001         case 'c':
3002         case 'p':
3003             *index = strtol(++arg, endptr, 0);
3004             break;
3005         default:
3006             fprintf(stderr, "Invalid metadata type %c.\n", *arg);
3007             ffmpeg_exit(1);
3008         }
3009     } else
3010         *type = 'g';
3011 }
3012
3013 static void opt_map_metadata(const char *arg)
3014 {
3015     AVMetaDataMap *m, *m1;
3016     char *p;
3017
3018     meta_data_maps = grow_array(meta_data_maps, sizeof(*meta_data_maps),
3019                                 &nb_meta_data_maps, nb_meta_data_maps + 1);
3020
3021     m = &meta_data_maps[nb_meta_data_maps - 1][0];
3022     m->file = strtol(arg, &p, 0);
3023     parse_meta_type(p, &m->type, &m->index, &p);
3024     if (*p)
3025         p++;
3026
3027     m1 = &meta_data_maps[nb_meta_data_maps - 1][1];
3028     m1->file = strtol(p, &p, 0);
3029     parse_meta_type(p, &m1->type, &m1->index, &p);
3030
3031     if (m->type == 'g' || m1->type == 'g')
3032         metadata_global_autocopy = 0;
3033     if (m->type == 's' || m1->type == 's')
3034         metadata_streams_autocopy = 0;
3035     if (m->type == 'c' || m1->type == 'c')
3036         metadata_chapters_autocopy = 0;
3037 }
3038
3039 static void opt_map_meta_data(const char *arg)
3040 {
3041     fprintf(stderr, "-map_meta_data is deprecated and will be removed soon. "
3042                     "Use -map_metadata instead.\n");
3043     opt_map_metadata(arg);
3044 }
3045
3046 static void opt_map_chapters(const char *arg)
3047 {
3048     AVChapterMap *c;
3049     char *p;
3050
3051     chapter_maps = grow_array(chapter_maps, sizeof(*chapter_maps), &nb_chapter_maps,
3052                               nb_chapter_maps + 1);
3053     c = &chapter_maps[nb_chapter_maps - 1];
3054     c->out_file = strtol(arg, &p, 0);
3055     if (*p)
3056         p++;
3057
3058     c->in_file = strtol(p, &p, 0);
3059 }
3060
3061 static void opt_input_ts_scale(const char *arg)
3062 {
3063     unsigned int stream;
3064     double scale;
3065     char *p;
3066
3067     stream = strtol(arg, &p, 0);
3068     if (*p)
3069         p++;
3070     scale= strtod(p, &p);
3071
3072     if(stream >= MAX_STREAMS)
3073         ffmpeg_exit(1);
3074
3075     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);
3076     input_files_ts_scale[nb_input_files][stream]= scale;
3077 }
3078
3079 static int opt_recording_time(const char *opt, const char *arg)
3080 {
3081     recording_time = parse_time_or_die(opt, arg, 1);
3082     return 0;
3083 }
3084
3085 static int opt_start_time(const char *opt, const char *arg)
3086 {
3087     start_time = parse_time_or_die(opt, arg, 1);
3088     return 0;
3089 }
3090
3091 static int opt_recording_timestamp(const char *opt, const char *arg)
3092 {
3093     recording_timestamp = parse_time_or_die(opt, arg, 0) / 1000000;
3094     return 0;
3095 }
3096
3097 static int opt_input_ts_offset(const char *opt, const char *arg)
3098 {
3099     input_ts_offset = parse_time_or_die(opt, arg, 1);
3100     return 0;
3101 }
3102
3103 static enum CodecID find_codec_or_die(const char *name, int type, int encoder, int strict)
3104 {
3105     const char *codec_string = encoder ? "encoder" : "decoder";
3106     AVCodec *codec;
3107
3108     if(!name)
3109         return CODEC_ID_NONE;
3110     codec = encoder ?
3111         avcodec_find_encoder_by_name(name) :
3112         avcodec_find_decoder_by_name(name);
3113     if(!codec) {
3114         fprintf(stderr, "Unknown %s '%s'\n", codec_string, name);
3115         ffmpeg_exit(1);
3116     }
3117     if(codec->type != type) {
3118         fprintf(stderr, "Invalid %s type '%s'\n", codec_string, name);
3119         ffmpeg_exit(1);
3120     }
3121     if(codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
3122        strict > FF_COMPLIANCE_EXPERIMENTAL) {
3123         fprintf(stderr, "%s '%s' is experimental and might produce bad "
3124                 "results.\nAdd '-strict experimental' if you want to use it.\n",
3125                 codec_string, codec->name);
3126         codec = encoder ?
3127             avcodec_find_encoder(codec->id) :
3128             avcodec_find_decoder(codec->id);
3129         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
3130             fprintf(stderr, "Or use the non experimental %s '%s'.\n",
3131                     codec_string, codec->name);
3132         ffmpeg_exit(1);
3133     }
3134     return codec->id;
3135 }
3136
3137 static void opt_input_file(const char *filename)
3138 {
3139     AVFormatContext *ic;
3140     AVFormatParameters params, *ap = &params;
3141     AVInputFormat *file_iformat = NULL;
3142     int err, i, ret, rfps, rfps_base;
3143     int64_t timestamp;
3144
3145     if (last_asked_format) {
3146         if (!(file_iformat = av_find_input_format(last_asked_format))) {
3147             fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
3148             ffmpeg_exit(1);
3149         }
3150         last_asked_format = NULL;
3151     }
3152
3153     if (!strcmp(filename, "-"))
3154         filename = "pipe:";
3155
3156     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3157                     !strcmp(filename, "/dev/stdin");
3158
3159     /* get default parameters from command line */
3160     ic = avformat_alloc_context();
3161     if (!ic) {
3162         print_error(filename, AVERROR(ENOMEM));
3163         ffmpeg_exit(1);
3164     }
3165
3166     memset(ap, 0, sizeof(*ap));
3167     ap->prealloced_context = 1;
3168     ap->sample_rate = audio_sample_rate;
3169     ap->channels = audio_channels;
3170     ap->time_base.den = frame_rate.num;
3171     ap->time_base.num = frame_rate.den;
3172     ap->width = frame_width;
3173     ap->height = frame_height;
3174     ap->pix_fmt = frame_pix_fmt;
3175    // ap->sample_fmt = audio_sample_fmt; //FIXME:not implemented in libavformat
3176     ap->channel = video_channel;
3177     ap->standard = video_standard;
3178
3179     set_context_opts(ic, avformat_opts, AV_OPT_FLAG_DECODING_PARAM, NULL);
3180
3181     ic->video_codec_id   =
3182         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0,
3183                           avcodec_opts[AVMEDIA_TYPE_VIDEO   ]->strict_std_compliance);
3184     ic->audio_codec_id   =
3185         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0,
3186                           avcodec_opts[AVMEDIA_TYPE_AUDIO   ]->strict_std_compliance);
3187     ic->subtitle_codec_id=
3188         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0,
3189                           avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->strict_std_compliance);
3190     ic->flags |= AVFMT_FLAG_NONBLOCK;
3191
3192     /* open the input file with generic libav function */
3193     err = av_open_input_file(&ic, filename, file_iformat, 0, ap);
3194     if (err < 0) {
3195         print_error(filename, err);
3196         ffmpeg_exit(1);
3197     }
3198     if(opt_programid) {
3199         int i, j;
3200         int found=0;
3201         for(i=0; i<ic->nb_streams; i++){
3202             ic->streams[i]->discard= AVDISCARD_ALL;
3203         }
3204         for(i=0; i<ic->nb_programs; i++){
3205             AVProgram *p= ic->programs[i];
3206             if(p->id != opt_programid){
3207                 p->discard = AVDISCARD_ALL;
3208             }else{
3209                 found=1;
3210                 for(j=0; j<p->nb_stream_indexes; j++){
3211                     ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
3212                 }
3213             }
3214         }
3215         if(!found){
3216             fprintf(stderr, "Specified program id not found\n");
3217             ffmpeg_exit(1);
3218         }
3219         opt_programid=0;
3220     }
3221
3222     ic->loop_input = loop_input;
3223
3224     /* If not enough info to get the stream parameters, we decode the
3225        first frames to get it. (used in mpeg case for example) */
3226     ret = av_find_stream_info(ic);
3227     if (ret < 0 && verbose >= 0) {
3228         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3229         av_close_input_file(ic);
3230         ffmpeg_exit(1);
3231     }
3232
3233     timestamp = start_time;
3234     /* add the stream start time */
3235     if (ic->start_time != AV_NOPTS_VALUE)
3236         timestamp += ic->start_time;
3237
3238     /* if seeking requested, we execute it */
3239     if (start_time != 0) {
3240         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3241         if (ret < 0) {
3242             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3243                     filename, (double)timestamp / AV_TIME_BASE);
3244         }
3245         /* reset seek info */
3246         start_time = 0;
3247     }
3248
3249     /* update the current parameters so that they match the one of the input stream */
3250     for(i=0;i<ic->nb_streams;i++) {
3251         AVStream *st = ic->streams[i];
3252         AVCodecContext *dec = st->codec;
3253         avcodec_thread_init(dec, thread_count);
3254         input_codecs = grow_array(input_codecs, sizeof(*input_codecs), &nb_input_codecs, nb_input_codecs + 1);
3255         switch (dec->codec_type) {
3256         case AVMEDIA_TYPE_AUDIO:
3257             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(audio_codec_name);
3258             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]);
3259             //fprintf(stderr, "\nInput Audio channels: %d", dec->channels);
3260             channel_layout    = dec->channel_layout;
3261             audio_channels    = dec->channels;
3262             audio_sample_rate = dec->sample_rate;
3263             audio_sample_fmt  = dec->sample_fmt;
3264             if(audio_disable)
3265                 st->discard= AVDISCARD_ALL;
3266             /* Note that av_find_stream_info can add more streams, and we
3267              * currently have no chance of setting up lowres decoding
3268              * early enough for them. */
3269             if (dec->lowres)
3270                 audio_sample_rate >>= dec->lowres;
3271             break;
3272         case AVMEDIA_TYPE_VIDEO:
3273             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(video_codec_name);
3274             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]);
3275             frame_height = dec->height;
3276             frame_width  = dec->width;
3277             if(ic->streams[i]->sample_aspect_ratio.num)
3278                 frame_aspect_ratio=av_q2d(ic->streams[i]->sample_aspect_ratio);
3279             else
3280                 frame_aspect_ratio=av_q2d(dec->sample_aspect_ratio);
3281             frame_aspect_ratio *= (float) dec->width / dec->height;
3282             frame_pix_fmt = dec->pix_fmt;
3283             rfps      = ic->streams[i]->r_frame_rate.num;
3284             rfps_base = ic->streams[i]->r_frame_rate.den;
3285             if (dec->lowres) {
3286                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3287                 frame_height >>= dec->lowres;
3288                 frame_width  >>= dec->lowres;
3289                 dec->height = frame_height;
3290                 dec->width  = frame_width;
3291             }
3292             if(me_threshold)
3293                 dec->debug |= FF_DEBUG_MV;
3294
3295             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3296
3297                 if (verbose >= 0)
3298                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3299                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3300
3301                     (float)rfps / rfps_base, rfps, rfps_base);
3302             }
3303             /* update the current frame rate to match the stream frame rate */
3304             frame_rate.num = rfps;
3305             frame_rate.den = rfps_base;
3306
3307             if(video_disable)
3308                 st->discard= AVDISCARD_ALL;
3309             else if(video_discard)
3310                 st->discard= video_discard;
3311             break;
3312         case AVMEDIA_TYPE_DATA:
3313             break;
3314         case AVMEDIA_TYPE_SUBTITLE:
3315             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(subtitle_codec_name);
3316             if(subtitle_disable)
3317                 st->discard = AVDISCARD_ALL;
3318             break;
3319         case AVMEDIA_TYPE_ATTACHMENT:
3320         case AVMEDIA_TYPE_UNKNOWN:
3321             break;
3322         default:
3323             abort();
3324         }
3325     }
3326
3327     input_files[nb_input_files] = ic;
3328     input_files_ts_offset[nb_input_files] = input_ts_offset - (copy_ts ? 0 : timestamp);
3329     /* dump the file content */
3330     if (verbose >= 0)
3331         dump_format(ic, nb_input_files, filename, 0);
3332
3333     nb_input_files++;
3334
3335     video_channel = 0;
3336
3337     av_freep(&video_codec_name);
3338     av_freep(&audio_codec_name);
3339     av_freep(&subtitle_codec_name);
3340 }
3341
3342 static void check_audio_video_sub_inputs(int *has_video_ptr, int *has_audio_ptr,
3343                                          int *has_subtitle_ptr)
3344 {
3345     int has_video, has_audio, has_subtitle, i, j;
3346     AVFormatContext *ic;
3347
3348     has_video = 0;
3349     has_audio = 0;
3350     has_subtitle = 0;
3351     for(j=0;j<nb_input_files;j++) {
3352         ic = input_files[j];
3353         for(i=0;i<ic->nb_streams;i++) {
3354             AVCodecContext *enc = ic->streams[i]->codec;
3355             switch(enc->codec_type) {
3356             case AVMEDIA_TYPE_AUDIO:
3357                 has_audio = 1;
3358                 break;
3359             case AVMEDIA_TYPE_VIDEO:
3360                 has_video = 1;
3361                 break;
3362             case AVMEDIA_TYPE_SUBTITLE:
3363                 has_subtitle = 1;
3364                 break;
3365             case AVMEDIA_TYPE_DATA:
3366             case AVMEDIA_TYPE_ATTACHMENT:
3367             case AVMEDIA_TYPE_UNKNOWN:
3368                 break;
3369             default:
3370                 abort();
3371             }
3372         }
3373     }
3374     *has_video_ptr = has_video;
3375     *has_audio_ptr = has_audio;
3376     *has_subtitle_ptr = has_subtitle;
3377 }
3378
3379 static void new_video_stream(AVFormatContext *oc, int file_idx)
3380 {
3381     AVStream *st;
3382     AVOutputStream *ost;
3383     AVCodecContext *video_enc;
3384     enum CodecID codec_id = CODEC_ID_NONE;
3385     AVCodec *codec= NULL;
3386
3387     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3388     if (!st) {
3389         fprintf(stderr, "Could not alloc stream\n");
3390         ffmpeg_exit(1);
3391     }
3392     ost = new_output_stream(oc, file_idx);
3393
3394     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3395     if(!video_stream_copy){
3396         if (video_codec_name) {
3397             codec_id = find_codec_or_die(video_codec_name, AVMEDIA_TYPE_VIDEO, 1,
3398                                          avcodec_opts[AVMEDIA_TYPE_VIDEO]->strict_std_compliance);
3399             codec = avcodec_find_encoder_by_name(video_codec_name);
3400             output_codecs[nb_output_codecs-1] = codec;
3401         } else {
3402             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_VIDEO);
3403             codec = avcodec_find_encoder(codec_id);
3404         }
3405     }
3406
3407     avcodec_get_context_defaults3(st->codec, codec);
3408     ost->bitstream_filters = video_bitstream_filters;
3409     video_bitstream_filters= NULL;
3410
3411     avcodec_thread_init(st->codec, thread_count);
3412
3413     video_enc = st->codec;
3414
3415     if(video_codec_tag)
3416         video_enc->codec_tag= video_codec_tag;
3417
3418     if(   (video_global_header&1)
3419        || (video_global_header==0 && (oc->oformat->flags & AVFMT_GLOBALHEADER))){
3420         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3421         avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3422     }
3423     if(video_global_header&2){
3424         video_enc->flags2 |= CODEC_FLAG2_LOCAL_HEADER;
3425         avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags2|= CODEC_FLAG2_LOCAL_HEADER;
3426     }
3427
3428     if (video_stream_copy) {
3429         st->stream_copy = 1;
3430         video_enc->codec_type = AVMEDIA_TYPE_VIDEO;
3431         video_enc->sample_aspect_ratio =
3432         st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3433     } else {
3434         const char *p;
3435         int i;
3436         AVRational fps= frame_rate.num ? frame_rate : (AVRational){25,1};
3437
3438         video_enc->codec_id = codec_id;
3439         set_context_opts(video_enc, avcodec_opts[AVMEDIA_TYPE_VIDEO], AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3440
3441         if (codec && codec->supported_framerates && !force_fps)
3442             fps = codec->supported_framerates[av_find_nearest_q_idx(fps, codec->supported_framerates)];
3443         video_enc->time_base.den = fps.num;
3444         video_enc->time_base.num = fps.den;
3445
3446         video_enc->width = frame_width;
3447         video_enc->height = frame_height;
3448         video_enc->sample_aspect_ratio = av_d2q(frame_aspect_ratio*video_enc->height/video_enc->width, 255);
3449         video_enc->pix_fmt = frame_pix_fmt;
3450         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3451
3452         choose_pixel_fmt(st, codec);
3453
3454         if (intra_only)
3455             video_enc->gop_size = 0;
3456         if (video_qscale || same_quality) {
3457             video_enc->flags |= CODEC_FLAG_QSCALE;
3458             video_enc->global_quality=
3459                 st->quality = FF_QP2LAMBDA * video_qscale;
3460         }
3461
3462         if(intra_matrix)
3463             video_enc->intra_matrix = intra_matrix;
3464         if(inter_matrix)
3465             video_enc->inter_matrix = inter_matrix;
3466
3467         p= video_rc_override_string;
3468         for(i=0; p; i++){
3469             int start, end, q;
3470             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3471             if(e!=3){
3472                 fprintf(stderr, "error parsing rc_override\n");
3473                 ffmpeg_exit(1);
3474             }
3475             video_enc->rc_override=
3476                 av_realloc(video_enc->rc_override,
3477                            sizeof(RcOverride)*(i+1));
3478             video_enc->rc_override[i].start_frame= start;
3479             video_enc->rc_override[i].end_frame  = end;
3480             if(q>0){
3481                 video_enc->rc_override[i].qscale= q;
3482                 video_enc->rc_override[i].quality_factor= 1.0;
3483             }
3484             else{
3485                 video_enc->rc_override[i].qscale= 0;
3486                 video_enc->rc_override[i].quality_factor= -q/100.0;
3487             }
3488             p= strchr(p, '/');
3489             if(p) p++;
3490         }
3491         video_enc->rc_override_count=i;
3492         if (!video_enc->rc_initial_buffer_occupancy)
3493             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3494         video_enc->me_threshold= me_threshold;
3495         video_enc->intra_dc_precision= intra_dc_precision - 8;
3496
3497         if (do_psnr)
3498             video_enc->flags|= CODEC_FLAG_PSNR;
3499
3500         /* two pass mode */
3501         if (do_pass) {
3502             if (do_pass == 1) {
3503                 video_enc->flags |= CODEC_FLAG_PASS1;
3504             } else {
3505                 video_enc->flags |= CODEC_FLAG_PASS2;
3506             }
3507         }
3508
3509         if (forced_key_frames)
3510             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3511     }
3512     if (video_language) {
3513         av_metadata_set2(&st->metadata, "language", video_language, 0);
3514         av_freep(&video_language);
3515     }
3516
3517     /* reset some key parameters */
3518     video_disable = 0;
3519     av_freep(&video_codec_name);
3520     av_freep(&forced_key_frames);
3521     video_stream_copy = 0;
3522     frame_pix_fmt = PIX_FMT_NONE;
3523 }
3524
3525 static void new_audio_stream(AVFormatContext *oc, int file_idx)
3526 {
3527     AVStream *st;
3528     AVOutputStream *ost;
3529     AVCodec *codec= NULL;
3530     AVCodecContext *audio_enc;
3531     enum CodecID codec_id = CODEC_ID_NONE;
3532
3533     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3534     if (!st) {
3535         fprintf(stderr, "Could not alloc stream\n");
3536         ffmpeg_exit(1);
3537     }
3538     ost = new_output_stream(oc, file_idx);
3539
3540     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3541     if(!audio_stream_copy){
3542         if (audio_codec_name) {
3543             codec_id = find_codec_or_die(audio_codec_name, AVMEDIA_TYPE_AUDIO, 1,
3544                                          avcodec_opts[AVMEDIA_TYPE_AUDIO]->strict_std_compliance);
3545             codec = avcodec_find_encoder_by_name(audio_codec_name);
3546             output_codecs[nb_output_codecs-1] = codec;
3547         } else {
3548             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_AUDIO);
3549             codec = avcodec_find_encoder(codec_id);
3550         }
3551     }
3552
3553     avcodec_get_context_defaults3(st->codec, codec);
3554
3555     ost->bitstream_filters = audio_bitstream_filters;
3556     audio_bitstream_filters= NULL;
3557
3558     avcodec_thread_init(st->codec, thread_count);
3559
3560     audio_enc = st->codec;
3561     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3562
3563     if(audio_codec_tag)
3564         audio_enc->codec_tag= audio_codec_tag;
3565
3566     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3567         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3568         avcodec_opts[AVMEDIA_TYPE_AUDIO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3569     }
3570     if (audio_stream_copy) {
3571         st->stream_copy = 1;
3572         audio_enc->channels = audio_channels;
3573         audio_enc->sample_rate = audio_sample_rate;
3574     } else {
3575         audio_enc->codec_id = codec_id;
3576         set_context_opts(audio_enc, avcodec_opts[AVMEDIA_TYPE_AUDIO], AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3577
3578         if (audio_qscale > QSCALE_NONE) {
3579             audio_enc->flags |= CODEC_FLAG_QSCALE;
3580             audio_enc->global_quality = st->quality = FF_QP2LAMBDA * audio_qscale;
3581         }
3582         audio_enc->channels = audio_channels;
3583         audio_enc->sample_fmt = audio_sample_fmt;
3584         audio_enc->sample_rate = audio_sample_rate;
3585         audio_enc->channel_layout = channel_layout;
3586         if (av_get_channel_layout_nb_channels(channel_layout) != audio_channels)
3587             audio_enc->channel_layout = 0;
3588         choose_sample_fmt(st, codec);
3589         choose_sample_rate(st, codec);
3590     }
3591     audio_enc->time_base= (AVRational){1, audio_sample_rate};
3592     if (audio_language) {
3593         av_metadata_set2(&st->metadata, "language", audio_language, 0);
3594         av_freep(&audio_language);
3595     }
3596
3597     /* reset some key parameters */
3598     audio_disable = 0;
3599     av_freep(&audio_codec_name);
3600     audio_stream_copy = 0;
3601 }
3602
3603 static void new_subtitle_stream(AVFormatContext *oc, int file_idx)
3604 {
3605     AVStream *st;
3606     AVOutputStream *ost;
3607     AVCodec *codec=NULL;
3608     AVCodecContext *subtitle_enc;
3609     enum CodecID codec_id = CODEC_ID_NONE;
3610
3611     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3612     if (!st) {
3613         fprintf(stderr, "Could not alloc stream\n");
3614         ffmpeg_exit(1);
3615     }
3616     ost = new_output_stream(oc, file_idx);
3617     subtitle_enc = st->codec;
3618     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3619     if(!subtitle_stream_copy){
3620         if (subtitle_codec_name) {
3621             codec_id = find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 1,
3622                                          avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->strict_std_compliance);
3623             codec= output_codecs[nb_output_codecs-1] = avcodec_find_encoder_by_name(subtitle_codec_name);
3624         } else {
3625             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_SUBTITLE);
3626             codec = avcodec_find_encoder(codec_id);
3627         }
3628     }
3629     avcodec_get_context_defaults3(st->codec, codec);
3630
3631     ost->bitstream_filters = subtitle_bitstream_filters;
3632     subtitle_bitstream_filters= NULL;
3633
3634     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3635
3636     if(subtitle_codec_tag)
3637         subtitle_enc->codec_tag= subtitle_codec_tag;
3638
3639     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3640         subtitle_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3641         avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->flags |= CODEC_FLAG_GLOBAL_HEADER;
3642     }
3643     if (subtitle_stream_copy) {
3644         st->stream_copy = 1;
3645     } else {
3646         subtitle_enc->codec_id = codec_id;
3647         set_context_opts(avcodec_opts[AVMEDIA_TYPE_SUBTITLE], subtitle_enc, AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3648     }
3649
3650     if (subtitle_language) {
3651         av_metadata_set2(&st->metadata, "language", subtitle_language, 0);
3652         av_freep(&subtitle_language);
3653     }
3654
3655     subtitle_disable = 0;
3656     av_freep(&subtitle_codec_name);
3657     subtitle_stream_copy = 0;
3658 }
3659
3660 static int opt_new_stream(const char *opt, const char *arg)
3661 {
3662     AVFormatContext *oc;
3663     int file_idx = nb_output_files - 1;
3664     if (nb_output_files <= 0) {
3665         fprintf(stderr, "At least one output file must be specified\n");
3666         ffmpeg_exit(1);
3667     }
3668     oc = output_files[file_idx];
3669
3670     if      (!strcmp(opt, "newvideo"   )