Make opt_audio_sample_fmt() abort in case of invalid sample format
[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 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 opt_shortest = 0;
217 static int video_global_header = 0;
218 static char *vstats_filename;
219 static FILE *vstats_file;
220 static int opt_programid = 0;
221 static int copy_initial_nonkeyframes = 0;
222
223 static int rate_emu = 0;
224
225 static int  video_channel = 0;
226 static char *video_standard;
227
228 static int audio_volume = 256;
229
230 static int exit_on_error = 0;
231 static int using_stdin = 0;
232 static int verbose = 1;
233 static int thread_count= 1;
234 static int q_pressed = 0;
235 static int64_t video_size = 0;
236 static int64_t audio_size = 0;
237 static int64_t extra_size = 0;
238 static int nb_frames_dup = 0;
239 static int nb_frames_drop = 0;
240 static int input_sync;
241 static uint64_t limit_filesize = 0;
242 static int force_fps = 0;
243 static char *forced_key_frames = NULL;
244
245 static float dts_delta_threshold = 10;
246
247 static unsigned int sws_flags = SWS_BICUBIC;
248
249 static int64_t timer_start;
250
251 static uint8_t *audio_buf;
252 static uint8_t *audio_out;
253 unsigned int allocated_audio_out_size, allocated_audio_buf_size;
254
255 static short *samples;
256
257 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
258 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
259 static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL;
260
261 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
262
263 struct AVInputStream;
264
265 typedef struct AVOutputStream {
266     int file_index;          /* file index */
267     int index;               /* stream index in the output file */
268     int source_index;        /* AVInputStream index */
269     AVStream *st;            /* stream in the output file */
270     int encoding_needed;     /* true if encoding needed for this stream */
271     int frame_number;
272     /* input pts and corresponding output pts
273        for A/V sync */
274     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
275     struct AVInputStream *sync_ist; /* input stream to sync against */
276     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
277     AVBitStreamFilterContext *bitstream_filters;
278     /* video only */
279     int video_resample;
280     AVFrame pict_tmp;      /* temporary image for resampling */
281     struct SwsContext *img_resample_ctx; /* for image resampling */
282     int resample_height;
283     int resample_width;
284     int resample_pix_fmt;
285
286     /* full frame size of first frame */
287     int original_height;
288     int original_width;
289
290     /* forced key frames */
291     int64_t *forced_kf_pts;
292     int forced_kf_count;
293     int forced_kf_index;
294
295     /* audio only */
296     int audio_resample;
297     ReSampleContext *resample; /* for audio resampling */
298     int resample_sample_fmt;
299     int resample_channels;
300     int resample_sample_rate;
301     int reformat_pair;
302     AVAudioConvert *reformat_ctx;
303     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
304     FILE *logfile;
305 } AVOutputStream;
306
307 static AVOutputStream **output_streams_for_file[MAX_FILES] = { NULL };
308 static int nb_output_streams_for_file[MAX_FILES] = { 0 };
309
310 typedef struct AVInputStream {
311     int file_index;
312     int index;
313     AVStream *st;
314     int discard;             /* true if stream data should be discarded */
315     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
316     int64_t sample_index;      /* current sample */
317
318     int64_t       start;     /* time when read started */
319     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
320                                 is not defined */
321     int64_t       pts;       /* current pts */
322     PtsCorrectionContext pts_ctx;
323     int is_start;            /* is 1 at the start and after a discontinuity */
324     int showed_multi_packet_warning;
325     int is_past_recording_time;
326 #if CONFIG_AVFILTER
327     AVFilterContext *output_video_filter;
328     AVFilterContext *input_video_filter;
329     AVFrame *filter_frame;
330     int has_filter_frame;
331     AVFilterBufferRef *picref;
332 #endif
333 } AVInputStream;
334
335 typedef struct AVInputFile {
336     int eof_reached;      /* true if eof reached */
337     int ist_index;        /* index of first stream in ist_table */
338     int buffer_size;      /* current total buffer size */
339     int nb_streams;       /* nb streams we are aware of */
340 } AVInputFile;
341
342 #if HAVE_TERMIOS_H
343
344 /* init terminal so that we can grab keys */
345 static struct termios oldtty;
346 #endif
347
348 #if CONFIG_AVFILTER
349
350 static int configure_filters(AVInputStream *ist, AVOutputStream *ost)
351 {
352     AVFilterContext *last_filter, *filter;
353     /** filter graph containing all filters including input & output */
354     AVCodecContext *codec = ost->st->codec;
355     AVCodecContext *icodec = ist->st->codec;
356     FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
357     char args[255];
358     int ret;
359
360     graph = avfilter_graph_alloc();
361
362     snprintf(args, 255, "%d:%d:%d:%d:%d", ist->st->codec->width,
363              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE);
364     ret = avfilter_graph_create_filter(&ist->input_video_filter, avfilter_get_by_name("buffer"),
365                                        "src", args, NULL, graph);
366     if (ret < 0)
367         return ret;
368     ret = avfilter_graph_create_filter(&ist->output_video_filter, &ffsink,
369                                        "out", NULL, &ffsink_ctx, graph);
370     if (ret < 0)
371         return ret;
372     last_filter = ist->input_video_filter;
373
374     if (codec->width  != icodec->width || codec->height != icodec->height) {
375         snprintf(args, 255, "%d:%d:flags=0x%X",
376                  codec->width,
377                  codec->height,
378                  (int)av_get_int(sws_opts, "sws_flags", NULL));
379         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
380                                                 NULL, args, NULL, graph)) < 0)
381             return ret;
382         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
383             return ret;
384         last_filter = filter;
385     }
386
387     snprintf(args, sizeof(args), "flags=0x%X", (int)av_get_int(sws_opts, "sws_flags", NULL));
388     graph->scale_sws_opts = av_strdup(args);
389
390     if (vfilters) {
391         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
392         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
393
394         outputs->name    = av_strdup("in");
395         outputs->filter_ctx = last_filter;
396         outputs->pad_idx = 0;
397         outputs->next    = NULL;
398
399         inputs->name    = av_strdup("out");
400         inputs->filter_ctx = ist->output_video_filter;
401         inputs->pad_idx = 0;
402         inputs->next    = NULL;
403
404         if ((ret = avfilter_graph_parse(graph, vfilters, inputs, outputs, NULL)) < 0)
405             return ret;
406         av_freep(&vfilters);
407     } else {
408         if ((ret = avfilter_link(last_filter, 0, ist->output_video_filter, 0)) < 0)
409             return ret;
410     }
411
412     if ((ret = avfilter_graph_config(graph, NULL)) < 0)
413         return ret;
414
415     codec->width  = ist->output_video_filter->inputs[0]->w;
416     codec->height = ist->output_video_filter->inputs[0]->h;
417
418     return 0;
419 }
420 #endif /* CONFIG_AVFILTER */
421
422 static void term_exit(void)
423 {
424     av_log(NULL, AV_LOG_QUIET, "");
425 #if HAVE_TERMIOS_H
426     tcsetattr (0, TCSANOW, &oldtty);
427 #endif
428 }
429
430 static volatile int received_sigterm = 0;
431
432 static void
433 sigterm_handler(int sig)
434 {
435     received_sigterm = sig;
436     term_exit();
437 }
438
439 static void term_init(void)
440 {
441 #if HAVE_TERMIOS_H
442     struct termios tty;
443
444     tcgetattr (0, &tty);
445     oldtty = tty;
446     atexit(term_exit);
447
448     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
449                           |INLCR|IGNCR|ICRNL|IXON);
450     tty.c_oflag |= OPOST;
451     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
452     tty.c_cflag &= ~(CSIZE|PARENB);
453     tty.c_cflag |= CS8;
454     tty.c_cc[VMIN] = 1;
455     tty.c_cc[VTIME] = 0;
456
457     tcsetattr (0, TCSANOW, &tty);
458     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
459 #endif
460
461     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
462     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
463 #ifdef SIGXCPU
464     signal(SIGXCPU, sigterm_handler);
465 #endif
466 }
467
468 /* read a key without blocking */
469 static int read_key(void)
470 {
471 #if HAVE_TERMIOS_H
472     int n = 1;
473     unsigned char ch;
474     struct timeval tv;
475     fd_set rfds;
476
477     FD_ZERO(&rfds);
478     FD_SET(0, &rfds);
479     tv.tv_sec = 0;
480     tv.tv_usec = 0;
481     n = select(1, &rfds, NULL, NULL, &tv);
482     if (n > 0) {
483         n = read(0, &ch, 1);
484         if (n == 1)
485             return ch;
486
487         return n;
488     }
489 #elif HAVE_CONIO_H
490     if(kbhit())
491         return(getch());
492 #endif
493     return -1;
494 }
495
496 static int decode_interrupt_cb(void)
497 {
498     return q_pressed || (q_pressed = read_key() == 'q');
499 }
500
501 static int ffmpeg_exit(int ret)
502 {
503     int i;
504
505     /* close files */
506     for(i=0;i<nb_output_files;i++) {
507         /* maybe av_close_output_file ??? */
508         AVFormatContext *s = output_files[i];
509         int j;
510         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
511             url_fclose(s->pb);
512         for(j=0;j<s->nb_streams;j++) {
513             av_metadata_free(&s->streams[j]->metadata);
514             av_free(s->streams[j]->codec);
515             av_free(s->streams[j]->info);
516             av_free(s->streams[j]);
517         }
518         for(j=0;j<s->nb_programs;j++) {
519             av_metadata_free(&s->programs[j]->metadata);
520         }
521         for(j=0;j<s->nb_chapters;j++) {
522             av_metadata_free(&s->chapters[j]->metadata);
523         }
524         av_metadata_free(&s->metadata);
525         av_free(s);
526         av_free(output_streams_for_file[i]);
527     }
528     for(i=0;i<nb_input_files;i++) {
529         av_close_input_file(input_files[i]);
530         av_free(input_files_ts_scale[i]);
531     }
532
533     av_free(intra_matrix);
534     av_free(inter_matrix);
535
536     if (vstats_file)
537         fclose(vstats_file);
538     av_free(vstats_filename);
539
540     av_free(opt_names);
541     av_free(streamid_map);
542     av_free(input_codecs);
543     av_free(output_codecs);
544     av_free(stream_maps);
545     av_free(meta_data_maps);
546
547     av_free(video_codec_name);
548     av_free(audio_codec_name);
549     av_free(subtitle_codec_name);
550
551     av_free(video_standard);
552
553     uninit_opts();
554     av_free(audio_buf);
555     av_free(audio_out);
556     allocated_audio_buf_size= allocated_audio_out_size= 0;
557     av_free(samples);
558
559 #if CONFIG_AVFILTER
560     avfilter_uninit();
561 #endif
562
563     if (received_sigterm) {
564         fprintf(stderr,
565             "Received signal %d: terminating.\n",
566             (int) received_sigterm);
567         exit (255);
568     }
569
570     exit(ret); /* not all OS-es handle main() return value */
571     return ret;
572 }
573
574 /* similar to ff_dynarray_add() and av_fast_realloc() */
575 static void *grow_array(void *array, int elem_size, int *size, int new_size)
576 {
577     if (new_size >= INT_MAX / elem_size) {
578         fprintf(stderr, "Array too big.\n");
579         ffmpeg_exit(1);
580     }
581     if (*size < new_size) {
582         uint8_t *tmp = av_realloc(array, new_size*elem_size);
583         if (!tmp) {
584             fprintf(stderr, "Could not alloc buffer.\n");
585             ffmpeg_exit(1);
586         }
587         memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
588         *size = new_size;
589         return tmp;
590     }
591     return array;
592 }
593
594 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
595 {
596     if(codec && codec->sample_fmts){
597         const enum AVSampleFormat *p= codec->sample_fmts;
598         for(; *p!=-1; p++){
599             if(*p == st->codec->sample_fmt)
600                 break;
601         }
602         if(*p == -1)
603             st->codec->sample_fmt = codec->sample_fmts[0];
604     }
605 }
606
607 static void choose_sample_rate(AVStream *st, AVCodec *codec)
608 {
609     if(codec && codec->supported_samplerates){
610         const int *p= codec->supported_samplerates;
611         int best=0;
612         int best_dist=INT_MAX;
613         for(; *p; p++){
614             int dist= abs(st->codec->sample_rate - *p);
615             if(dist < best_dist){
616                 best_dist= dist;
617                 best= *p;
618             }
619         }
620         if(best_dist){
621             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
622         }
623         st->codec->sample_rate= best;
624     }
625 }
626
627 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
628 {
629     if(codec && codec->pix_fmts){
630         const enum PixelFormat *p= codec->pix_fmts;
631         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
632             if(st->codec->codec_id==CODEC_ID_MJPEG){
633                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
634             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
635                 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};
636             }
637         }
638         for(; *p!=-1; p++){
639             if(*p == st->codec->pix_fmt)
640                 break;
641         }
642         if(*p == -1)
643             st->codec->pix_fmt = codec->pix_fmts[0];
644     }
645 }
646
647 static AVOutputStream *new_output_stream(AVFormatContext *oc, int file_idx)
648 {
649     int idx = oc->nb_streams - 1;
650     AVOutputStream *ost;
651
652     output_streams_for_file[file_idx] =
653         grow_array(output_streams_for_file[file_idx],
654                    sizeof(*output_streams_for_file[file_idx]),
655                    &nb_output_streams_for_file[file_idx],
656                    oc->nb_streams);
657     ost = output_streams_for_file[file_idx][idx] =
658         av_mallocz(sizeof(AVOutputStream));
659     if (!ost) {
660         fprintf(stderr, "Could not alloc output stream\n");
661         ffmpeg_exit(1);
662     }
663     ost->file_index = file_idx;
664     ost->index = idx;
665     return ost;
666 }
667
668 static int read_ffserver_streams(AVFormatContext *s, const char *filename)
669 {
670     int i, err;
671     AVFormatContext *ic;
672     int nopts = 0;
673
674     err = av_open_input_file(&ic, filename, NULL, FFM_PACKET_SIZE, NULL);
675     if (err < 0)
676         return err;
677     /* copy stream format */
678     s->nb_streams = 0;
679     for(i=0;i<ic->nb_streams;i++) {
680         AVStream *st;
681         AVCodec *codec;
682
683         s->nb_streams++;
684
685         // FIXME: a more elegant solution is needed
686         st = av_mallocz(sizeof(AVStream));
687         memcpy(st, ic->streams[i], sizeof(AVStream));
688         st->codec = avcodec_alloc_context();
689         if (!st->codec) {
690             print_error(filename, AVERROR(ENOMEM));
691             ffmpeg_exit(1);
692         }
693         avcodec_copy_context(st->codec, ic->streams[i]->codec);
694         s->streams[i] = st;
695
696         codec = avcodec_find_encoder(st->codec->codec_id);
697         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
698             if (audio_stream_copy) {
699                 st->stream_copy = 1;
700             } else
701                 choose_sample_fmt(st, codec);
702         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
703             if (video_stream_copy) {
704                 st->stream_copy = 1;
705             } else
706                 choose_pixel_fmt(st, codec);
707         }
708
709         if(!st->codec->thread_count)
710             st->codec->thread_count = 1;
711         if(st->codec->thread_count>1)
712             avcodec_thread_init(st->codec, st->codec->thread_count);
713
714         if(st->codec->flags & CODEC_FLAG_BITEXACT)
715             nopts = 1;
716
717         new_output_stream(s, nb_output_files);
718     }
719
720     if (!nopts)
721         s->timestamp = av_gettime();
722
723     av_close_input_file(ic);
724     return 0;
725 }
726
727 static double
728 get_sync_ipts(const AVOutputStream *ost)
729 {
730     const AVInputStream *ist = ost->sync_ist;
731     return (double)(ist->pts - start_time)/AV_TIME_BASE;
732 }
733
734 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
735     int ret;
736
737     while(bsfc){
738         AVPacket new_pkt= *pkt;
739         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
740                                           &new_pkt.data, &new_pkt.size,
741                                           pkt->data, pkt->size,
742                                           pkt->flags & AV_PKT_FLAG_KEY);
743         if(a>0){
744             av_free_packet(pkt);
745             new_pkt.destruct= av_destruct_packet;
746         } else if(a<0){
747             fprintf(stderr, "%s failed for stream %d, codec %s",
748                     bsfc->filter->name, pkt->stream_index,
749                     avctx->codec ? avctx->codec->name : "copy");
750             print_error("", a);
751             if (exit_on_error)
752                 ffmpeg_exit(1);
753         }
754         *pkt= new_pkt;
755
756         bsfc= bsfc->next;
757     }
758
759     ret= av_interleaved_write_frame(s, pkt);
760     if(ret < 0){
761         print_error("av_interleaved_write_frame()", ret);
762         ffmpeg_exit(1);
763     }
764 }
765
766 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
767
768 static void do_audio_out(AVFormatContext *s,
769                          AVOutputStream *ost,
770                          AVInputStream *ist,
771                          unsigned char *buf, int size)
772 {
773     uint8_t *buftmp;
774     int64_t audio_out_size, audio_buf_size;
775     int64_t allocated_for_size= size;
776
777     int size_out, frame_bytes, ret, resample_changed;
778     AVCodecContext *enc= ost->st->codec;
779     AVCodecContext *dec= ist->st->codec;
780     int osize= av_get_bits_per_sample_fmt(enc->sample_fmt)/8;
781     int isize= av_get_bits_per_sample_fmt(dec->sample_fmt)/8;
782     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
783
784 need_realloc:
785     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
786     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
787     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
788     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
789     audio_buf_size*= osize*enc->channels;
790
791     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
792     if(coded_bps > 8*osize)
793         audio_out_size= audio_out_size * coded_bps / (8*osize);
794     audio_out_size += FF_MIN_BUFFER_SIZE;
795
796     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
797         fprintf(stderr, "Buffer sizes too large\n");
798         ffmpeg_exit(1);
799     }
800
801     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
802     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
803     if (!audio_buf || !audio_out){
804         fprintf(stderr, "Out of memory in do_audio_out\n");
805         ffmpeg_exit(1);
806     }
807
808     if (enc->channels != dec->channels)
809         ost->audio_resample = 1;
810
811     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
812                        ost->resample_channels    != dec->channels   ||
813                        ost->resample_sample_rate != dec->sample_rate;
814
815     if ((ost->audio_resample && !ost->resample) || resample_changed) {
816         if (resample_changed) {
817             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",
818                    ist->file_index, ist->index,
819                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
820                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
821             ost->resample_sample_fmt  = dec->sample_fmt;
822             ost->resample_channels    = dec->channels;
823             ost->resample_sample_rate = dec->sample_rate;
824             if (ost->resample)
825                 audio_resample_close(ost->resample);
826         }
827         if (ost->resample_sample_fmt  == enc->sample_fmt &&
828             ost->resample_channels    == enc->channels   &&
829             ost->resample_sample_rate == enc->sample_rate) {
830             ost->resample = NULL;
831             ost->audio_resample = 0;
832         } else {
833             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
834                 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
835             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
836                                                    enc->sample_rate, dec->sample_rate,
837                                                    enc->sample_fmt,  dec->sample_fmt,
838                                                    16, 10, 0, 0.8);
839             if (!ost->resample) {
840                 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
841                         dec->channels, dec->sample_rate,
842                         enc->channels, enc->sample_rate);
843                 ffmpeg_exit(1);
844             }
845         }
846     }
847
848 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
849     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
850         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
851         if (ost->reformat_ctx)
852             av_audio_convert_free(ost->reformat_ctx);
853         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
854                                                    dec->sample_fmt, 1, NULL, 0);
855         if (!ost->reformat_ctx) {
856             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
857                 av_get_sample_fmt_name(dec->sample_fmt),
858                 av_get_sample_fmt_name(enc->sample_fmt));
859             ffmpeg_exit(1);
860         }
861         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
862     }
863
864     if(audio_sync_method){
865         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
866                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
867         double idelta= delta*dec->sample_rate / enc->sample_rate;
868         int byte_delta= ((int)idelta)*2*dec->channels;
869
870         //FIXME resample delay
871         if(fabs(delta) > 50){
872             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
873                 if(byte_delta < 0){
874                     byte_delta= FFMAX(byte_delta, -size);
875                     size += byte_delta;
876                     buf  -= byte_delta;
877                     if(verbose > 2)
878                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
879                     if(!size)
880                         return;
881                     ist->is_start=0;
882                 }else{
883                     static uint8_t *input_tmp= NULL;
884                     input_tmp= av_realloc(input_tmp, byte_delta + size);
885
886                     if(byte_delta > allocated_for_size - size){
887                         allocated_for_size= byte_delta + (int64_t)size;
888                         goto need_realloc;
889                     }
890                     ist->is_start=0;
891
892                     memset(input_tmp, 0, byte_delta);
893                     memcpy(input_tmp + byte_delta, buf, size);
894                     buf= input_tmp;
895                     size += byte_delta;
896                     if(verbose > 2)
897                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
898                 }
899             }else if(audio_sync_method>1){
900                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
901                 av_assert0(ost->audio_resample);
902                 if(verbose > 2)
903                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
904 //                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));
905                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
906             }
907         }
908     }else
909         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
910                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
911
912     if (ost->audio_resample) {
913         buftmp = audio_buf;
914         size_out = audio_resample(ost->resample,
915                                   (short *)buftmp, (short *)buf,
916                                   size / (dec->channels * isize));
917         size_out = size_out * enc->channels * osize;
918     } else {
919         buftmp = buf;
920         size_out = size;
921     }
922
923     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
924         const void *ibuf[6]= {buftmp};
925         void *obuf[6]= {audio_buf};
926         int istride[6]= {isize};
927         int ostride[6]= {osize};
928         int len= size_out/istride[0];
929         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
930             printf("av_audio_convert() failed\n");
931             if (exit_on_error)
932                 ffmpeg_exit(1);
933             return;
934         }
935         buftmp = audio_buf;
936         size_out = len*osize;
937     }
938
939     /* now encode as many frames as possible */
940     if (enc->frame_size > 1) {
941         /* output resampled raw samples */
942         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
943             fprintf(stderr, "av_fifo_realloc2() failed\n");
944             ffmpeg_exit(1);
945         }
946         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
947
948         frame_bytes = enc->frame_size * osize * enc->channels;
949
950         while (av_fifo_size(ost->fifo) >= frame_bytes) {
951             AVPacket pkt;
952             av_init_packet(&pkt);
953
954             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
955
956             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
957
958             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
959                                        (short *)audio_buf);
960             if (ret < 0) {
961                 fprintf(stderr, "Audio encoding failed\n");
962                 ffmpeg_exit(1);
963             }
964             audio_size += ret;
965             pkt.stream_index= ost->index;
966             pkt.data= audio_out;
967             pkt.size= ret;
968             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
969                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
970             pkt.flags |= AV_PKT_FLAG_KEY;
971             write_frame(s, &pkt, enc, ost->bitstream_filters);
972
973             ost->sync_opts += enc->frame_size;
974         }
975     } else {
976         AVPacket pkt;
977         av_init_packet(&pkt);
978
979         ost->sync_opts += size_out / (osize * enc->channels);
980
981         /* output a pcm frame */
982         /* determine the size of the coded buffer */
983         size_out /= osize;
984         if (coded_bps)
985             size_out = size_out*coded_bps/8;
986
987         if(size_out > audio_out_size){
988             fprintf(stderr, "Internal error, buffer size too small\n");
989             ffmpeg_exit(1);
990         }
991
992         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
993         ret = avcodec_encode_audio(enc, audio_out, size_out,
994                                    (short *)buftmp);
995         if (ret < 0) {
996             fprintf(stderr, "Audio encoding failed\n");
997             ffmpeg_exit(1);
998         }
999         audio_size += ret;
1000         pkt.stream_index= ost->index;
1001         pkt.data= audio_out;
1002         pkt.size= ret;
1003         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1004             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1005         pkt.flags |= AV_PKT_FLAG_KEY;
1006         write_frame(s, &pkt, enc, ost->bitstream_filters);
1007     }
1008 }
1009
1010 static void pre_process_video_frame(AVInputStream *ist, AVPicture *picture, void **bufp)
1011 {
1012     AVCodecContext *dec;
1013     AVPicture *picture2;
1014     AVPicture picture_tmp;
1015     uint8_t *buf = 0;
1016
1017     dec = ist->st->codec;
1018
1019     /* deinterlace : must be done before any resize */
1020     if (do_deinterlace) {
1021         int size;
1022
1023         /* create temporary picture */
1024         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1025         buf = av_malloc(size);
1026         if (!buf)
1027             return;
1028
1029         picture2 = &picture_tmp;
1030         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1031
1032         if(avpicture_deinterlace(picture2, picture,
1033                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1034             /* if error, do not deinterlace */
1035             fprintf(stderr, "Deinterlacing failed\n");
1036             av_free(buf);
1037             buf = NULL;
1038             picture2 = picture;
1039         }
1040     } else {
1041         picture2 = picture;
1042     }
1043
1044     if (picture != picture2)
1045         *picture = *picture2;
1046     *bufp = buf;
1047 }
1048
1049 /* we begin to correct av delay at this threshold */
1050 #define AV_DELAY_MAX 0.100
1051
1052 static void do_subtitle_out(AVFormatContext *s,
1053                             AVOutputStream *ost,
1054                             AVInputStream *ist,
1055                             AVSubtitle *sub,
1056                             int64_t pts)
1057 {
1058     static uint8_t *subtitle_out = NULL;
1059     int subtitle_out_max_size = 1024 * 1024;
1060     int subtitle_out_size, nb, i;
1061     AVCodecContext *enc;
1062     AVPacket pkt;
1063
1064     if (pts == AV_NOPTS_VALUE) {
1065         fprintf(stderr, "Subtitle packets must have a pts\n");
1066         if (exit_on_error)
1067             ffmpeg_exit(1);
1068         return;
1069     }
1070
1071     enc = ost->st->codec;
1072
1073     if (!subtitle_out) {
1074         subtitle_out = av_malloc(subtitle_out_max_size);
1075     }
1076
1077     /* Note: DVB subtitle need one packet to draw them and one other
1078        packet to clear them */
1079     /* XXX: signal it in the codec context ? */
1080     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1081         nb = 2;
1082     else
1083         nb = 1;
1084
1085     for(i = 0; i < nb; i++) {
1086         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1087         // start_display_time is required to be 0
1088         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1089         sub->end_display_time -= sub->start_display_time;
1090         sub->start_display_time = 0;
1091         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1092                                                     subtitle_out_max_size, sub);
1093         if (subtitle_out_size < 0) {
1094             fprintf(stderr, "Subtitle encoding failed\n");
1095             ffmpeg_exit(1);
1096         }
1097
1098         av_init_packet(&pkt);
1099         pkt.stream_index = ost->index;
1100         pkt.data = subtitle_out;
1101         pkt.size = subtitle_out_size;
1102         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1103         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1104             /* XXX: the pts correction is handled here. Maybe handling
1105                it in the codec would be better */
1106             if (i == 0)
1107                 pkt.pts += 90 * sub->start_display_time;
1108             else
1109                 pkt.pts += 90 * sub->end_display_time;
1110         }
1111         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1112     }
1113 }
1114
1115 static int bit_buffer_size= 1024*256;
1116 static uint8_t *bit_buffer= NULL;
1117
1118 static void do_video_out(AVFormatContext *s,
1119                          AVOutputStream *ost,
1120                          AVInputStream *ist,
1121                          AVFrame *in_picture,
1122                          int *frame_size)
1123 {
1124     int nb_frames, i, ret;
1125     AVFrame *final_picture, *formatted_picture, *resampling_dst, *padding_src;
1126     AVCodecContext *enc, *dec;
1127     double sync_ipts;
1128
1129     enc = ost->st->codec;
1130     dec = ist->st->codec;
1131
1132     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1133
1134     /* by default, we output a single frame */
1135     nb_frames = 1;
1136
1137     *frame_size = 0;
1138
1139     if(video_sync_method){
1140         double vdelta = sync_ipts - ost->sync_opts;
1141         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1142         if (vdelta < -1.1)
1143             nb_frames = 0;
1144         else if (video_sync_method == 2 || (video_sync_method<0 && (s->oformat->flags & AVFMT_VARIABLE_FPS))){
1145             if(vdelta<=-0.6){
1146                 nb_frames=0;
1147             }else if(vdelta>0.6)
1148                 ost->sync_opts= lrintf(sync_ipts);
1149         }else if (vdelta > 1.1)
1150             nb_frames = lrintf(vdelta);
1151 //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);
1152         if (nb_frames == 0){
1153             ++nb_frames_drop;
1154             if (verbose>2)
1155                 fprintf(stderr, "*** drop!\n");
1156         }else if (nb_frames > 1) {
1157             nb_frames_dup += nb_frames - 1;
1158             if (verbose>2)
1159                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1160         }
1161     }else
1162         ost->sync_opts= lrintf(sync_ipts);
1163
1164     nb_frames= FFMIN(nb_frames, max_frames[AVMEDIA_TYPE_VIDEO] - ost->frame_number);
1165     if (nb_frames <= 0)
1166         return;
1167
1168     formatted_picture = in_picture;
1169     final_picture = formatted_picture;
1170     padding_src = formatted_picture;
1171     resampling_dst = &ost->pict_tmp;
1172
1173     if (   ost->resample_height != ist->st->codec->height
1174         || ost->resample_width  != ist->st->codec->width
1175         || (ost->resample_pix_fmt!= ist->st->codec->pix_fmt) ) {
1176
1177         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));
1178         if(!ost->video_resample)
1179             ffmpeg_exit(1);
1180     }
1181
1182 #if !CONFIG_AVFILTER
1183     if (ost->video_resample) {
1184         padding_src = NULL;
1185         final_picture = &ost->pict_tmp;
1186         if(  ost->resample_height != ist->st->codec->height
1187           || ost->resample_width  != ist->st->codec->width
1188           || (ost->resample_pix_fmt!= ist->st->codec->pix_fmt) ) {
1189
1190             /* initialize a new scaler context */
1191             sws_freeContext(ost->img_resample_ctx);
1192             sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
1193             ost->img_resample_ctx = sws_getContext(
1194                 ist->st->codec->width,
1195                 ist->st->codec->height,
1196                 ist->st->codec->pix_fmt,
1197                 ost->st->codec->width,
1198                 ost->st->codec->height,
1199                 ost->st->codec->pix_fmt,
1200                 sws_flags, NULL, NULL, NULL);
1201             if (ost->img_resample_ctx == NULL) {
1202                 fprintf(stderr, "Cannot get resampling context\n");
1203                 ffmpeg_exit(1);
1204             }
1205         }
1206         sws_scale(ost->img_resample_ctx, formatted_picture->data, formatted_picture->linesize,
1207               0, ost->resample_height, resampling_dst->data, resampling_dst->linesize);
1208     }
1209 #endif
1210
1211     /* duplicates frame if needed */
1212     for(i=0;i<nb_frames;i++) {
1213         AVPacket pkt;
1214         av_init_packet(&pkt);
1215         pkt.stream_index= ost->index;
1216
1217         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1218             /* raw pictures are written as AVPicture structure to
1219                avoid any copies. We support temorarily the older
1220                method. */
1221             AVFrame* old_frame = enc->coded_frame;
1222             enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
1223             pkt.data= (uint8_t *)final_picture;
1224             pkt.size=  sizeof(AVPicture);
1225             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1226             pkt.flags |= AV_PKT_FLAG_KEY;
1227
1228             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1229             enc->coded_frame = old_frame;
1230         } else {
1231             AVFrame big_picture;
1232
1233             big_picture= *final_picture;
1234             /* better than nothing: use input picture interlaced
1235                settings */
1236             big_picture.interlaced_frame = in_picture->interlaced_frame;
1237             if(avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)){
1238                 if(top_field_first == -1)
1239                     big_picture.top_field_first = in_picture->top_field_first;
1240                 else
1241                     big_picture.top_field_first = top_field_first;
1242             }
1243
1244             /* handles sameq here. This is not correct because it may
1245                not be a global option */
1246             big_picture.quality = same_quality ? ist->st->quality : ost->st->quality;
1247             if(!me_threshold)
1248                 big_picture.pict_type = 0;
1249 //            big_picture.pts = AV_NOPTS_VALUE;
1250             big_picture.pts= ost->sync_opts;
1251 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1252 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1253             if (ost->forced_kf_index < ost->forced_kf_count &&
1254                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1255                 big_picture.pict_type = FF_I_TYPE;
1256                 ost->forced_kf_index++;
1257             }
1258             ret = avcodec_encode_video(enc,
1259                                        bit_buffer, bit_buffer_size,
1260                                        &big_picture);
1261             if (ret < 0) {
1262                 fprintf(stderr, "Video encoding failed\n");
1263                 ffmpeg_exit(1);
1264             }
1265
1266             if(ret>0){
1267                 pkt.data= bit_buffer;
1268                 pkt.size= ret;
1269                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1270                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1271 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1272    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1273    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1274
1275                 if(enc->coded_frame->key_frame)
1276                     pkt.flags |= AV_PKT_FLAG_KEY;
1277                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1278                 *frame_size = ret;
1279                 video_size += ret;
1280                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1281                 //        enc->frame_number-1, ret, enc->pict_type);
1282                 /* if two pass, output log */
1283                 if (ost->logfile && enc->stats_out) {
1284                     fprintf(ost->logfile, "%s", enc->stats_out);
1285                 }
1286             }
1287         }
1288         ost->sync_opts++;
1289         ost->frame_number++;
1290     }
1291 }
1292
1293 static double psnr(double d){
1294     return -10.0*log(d)/log(10.0);
1295 }
1296
1297 static void do_video_stats(AVFormatContext *os, AVOutputStream *ost,
1298                            int frame_size)
1299 {
1300     AVCodecContext *enc;
1301     int frame_number;
1302     double ti1, bitrate, avg_bitrate;
1303
1304     /* this is executed just the first time do_video_stats is called */
1305     if (!vstats_file) {
1306         vstats_file = fopen(vstats_filename, "w");
1307         if (!vstats_file) {
1308             perror("fopen");
1309             ffmpeg_exit(1);
1310         }
1311     }
1312
1313     enc = ost->st->codec;
1314     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1315         frame_number = ost->frame_number;
1316         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1317         if (enc->flags&CODEC_FLAG_PSNR)
1318             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1319
1320         fprintf(vstats_file,"f_size= %6d ", frame_size);
1321         /* compute pts value */
1322         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1323         if (ti1 < 0.01)
1324             ti1 = 0.01;
1325
1326         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1327         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1328         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1329             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1330         fprintf(vstats_file,"type= %c\n", av_get_pict_type_char(enc->coded_frame->pict_type));
1331     }
1332 }
1333
1334 static void print_report(AVFormatContext **output_files,
1335                          AVOutputStream **ost_table, int nb_ostreams,
1336                          int is_last_report)
1337 {
1338     char buf[1024];
1339     AVOutputStream *ost;
1340     AVFormatContext *oc;
1341     int64_t total_size;
1342     AVCodecContext *enc;
1343     int frame_number, vid, i;
1344     double bitrate, ti1, pts;
1345     static int64_t last_time = -1;
1346     static int qp_histogram[52];
1347
1348     if (!is_last_report) {
1349         int64_t cur_time;
1350         /* display the report every 0.5 seconds */
1351         cur_time = av_gettime();
1352         if (last_time == -1) {
1353             last_time = cur_time;
1354             return;
1355         }
1356         if ((cur_time - last_time) < 500000)
1357             return;
1358         last_time = cur_time;
1359     }
1360
1361
1362     oc = output_files[0];
1363
1364     total_size = url_fsize(oc->pb);
1365     if(total_size<0) // FIXME improve url_fsize() so it works with non seekable output too
1366         total_size= url_ftell(oc->pb);
1367
1368     buf[0] = '\0';
1369     ti1 = 1e10;
1370     vid = 0;
1371     for(i=0;i<nb_ostreams;i++) {
1372         ost = ost_table[i];
1373         enc = ost->st->codec;
1374         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1375             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ",
1376                      !ost->st->stream_copy ?
1377                      enc->coded_frame->quality/(float)FF_QP2LAMBDA : -1);
1378         }
1379         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1380             float t = (av_gettime()-timer_start) / 1000000.0;
1381
1382             frame_number = ost->frame_number;
1383             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1384                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0,
1385                      !ost->st->stream_copy ?
1386                      enc->coded_frame->quality/(float)FF_QP2LAMBDA : -1);
1387             if(is_last_report)
1388                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1389             if(qp_hist){
1390                 int j;
1391                 int qp= lrintf(enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1392                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1393                     qp_histogram[qp]++;
1394                 for(j=0; j<32; j++)
1395                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1396             }
1397             if (enc->flags&CODEC_FLAG_PSNR){
1398                 int j;
1399                 double error, error_sum=0;
1400                 double scale, scale_sum=0;
1401                 char type[3]= {'Y','U','V'};
1402                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1403                 for(j=0; j<3; j++){
1404                     if(is_last_report){
1405                         error= enc->error[j];
1406                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1407                     }else{
1408                         error= enc->coded_frame->error[j];
1409                         scale= enc->width*enc->height*255.0*255.0;
1410                     }
1411                     if(j) scale/=4;
1412                     error_sum += error;
1413                     scale_sum += scale;
1414                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1415                 }
1416                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1417             }
1418             vid = 1;
1419         }
1420         /* compute min output value */
1421         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1422         if ((pts < ti1) && (pts > 0))
1423             ti1 = pts;
1424     }
1425     if (ti1 < 0.01)
1426         ti1 = 0.01;
1427
1428     if (verbose || is_last_report) {
1429         bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1430
1431         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1432             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1433             (double)total_size / 1024, ti1, bitrate);
1434
1435         if (nb_frames_dup || nb_frames_drop)
1436           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1437                   nb_frames_dup, nb_frames_drop);
1438
1439         if (verbose >= 0)
1440             fprintf(stderr, "%s    \r", buf);
1441
1442         fflush(stderr);
1443     }
1444
1445     if (is_last_report && verbose >= 0){
1446         int64_t raw= audio_size + video_size + extra_size;
1447         fprintf(stderr, "\n");
1448         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1449                 video_size/1024.0,
1450                 audio_size/1024.0,
1451                 extra_size/1024.0,
1452                 100.0*(total_size - raw)/raw
1453         );
1454     }
1455 }
1456
1457 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1458 static int output_packet(AVInputStream *ist, int ist_index,
1459                          AVOutputStream **ost_table, int nb_ostreams,
1460                          const AVPacket *pkt)
1461 {
1462     AVFormatContext *os;
1463     AVOutputStream *ost;
1464     int ret, i;
1465     int got_picture;
1466     AVFrame picture;
1467     void *buffer_to_free;
1468     static unsigned int samples_size= 0;
1469     AVSubtitle subtitle, *subtitle_to_free;
1470     int64_t pkt_pts = AV_NOPTS_VALUE;
1471 #if CONFIG_AVFILTER
1472     int frame_available;
1473 #endif
1474
1475     AVPacket avpkt;
1476     int bps = av_get_bits_per_sample_fmt(ist->st->codec->sample_fmt)>>3;
1477
1478     if(ist->next_pts == AV_NOPTS_VALUE)
1479         ist->next_pts= ist->pts;
1480
1481     if (pkt == NULL) {
1482         /* EOF handling */
1483         av_init_packet(&avpkt);
1484         avpkt.data = NULL;
1485         avpkt.size = 0;
1486         goto handle_eof;
1487     } else {
1488         avpkt = *pkt;
1489     }
1490
1491     if(pkt->dts != AV_NOPTS_VALUE)
1492         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1493     if(pkt->pts != AV_NOPTS_VALUE)
1494         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1495
1496     //while we have more to decode or while the decoder did output something on EOF
1497     while (avpkt.size > 0 || (!pkt && ist->next_pts != ist->pts)) {
1498         uint8_t *data_buf, *decoded_data_buf;
1499         int data_size, decoded_data_size;
1500     handle_eof:
1501         ist->pts= ist->next_pts;
1502
1503         if(avpkt.size && avpkt.size != pkt->size &&
1504            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1505             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1506             ist->showed_multi_packet_warning=1;
1507         }
1508
1509         /* decode the packet if needed */
1510         decoded_data_buf = NULL; /* fail safe */
1511         decoded_data_size= 0;
1512         data_buf  = avpkt.data;
1513         data_size = avpkt.size;
1514         subtitle_to_free = NULL;
1515         if (ist->decoding_needed) {
1516             switch(ist->st->codec->codec_type) {
1517             case AVMEDIA_TYPE_AUDIO:{
1518                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1519                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1520                     av_free(samples);
1521                     samples= av_malloc(samples_size);
1522                 }
1523                 decoded_data_size= samples_size;
1524                     /* XXX: could avoid copy if PCM 16 bits with same
1525                        endianness as CPU */
1526                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1527                                             &avpkt);
1528                 if (ret < 0)
1529                     goto fail_decode;
1530                 avpkt.data += ret;
1531                 avpkt.size -= ret;
1532                 data_size   = ret;
1533                 /* Some bug in mpeg audio decoder gives */
1534                 /* decoded_data_size < 0, it seems they are overflows */
1535                 if (decoded_data_size <= 0) {
1536                     /* no audio frame */
1537                     continue;
1538                 }
1539                 decoded_data_buf = (uint8_t *)samples;
1540                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1541                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1542                 break;}
1543             case AVMEDIA_TYPE_VIDEO:
1544                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1545                     /* XXX: allocate picture correctly */
1546                     avcodec_get_frame_defaults(&picture);
1547                     ist->st->codec->reordered_opaque = pkt_pts;
1548                     pkt_pts = AV_NOPTS_VALUE;
1549
1550                     ret = avcodec_decode_video2(ist->st->codec,
1551                                                 &picture, &got_picture, &avpkt);
1552                     ist->st->quality= picture.quality;
1553                     if (ret < 0)
1554                         goto fail_decode;
1555                     if (!got_picture) {
1556                         /* no picture yet */
1557                         goto discard_packet;
1558                     }
1559                     ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, picture.reordered_opaque, ist->pts);
1560                     if (ist->st->codec->time_base.num != 0) {
1561                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1562                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1563                                           ist->st->codec->time_base.num * ticks) /
1564                             ist->st->codec->time_base.den;
1565                     }
1566                     avpkt.size = 0;
1567                     break;
1568             case AVMEDIA_TYPE_SUBTITLE:
1569                 ret = avcodec_decode_subtitle2(ist->st->codec,
1570                                                &subtitle, &got_picture, &avpkt);
1571                 if (ret < 0)
1572                     goto fail_decode;
1573                 if (!got_picture) {
1574                     goto discard_packet;
1575                 }
1576                 subtitle_to_free = &subtitle;
1577                 avpkt.size = 0;
1578                 break;
1579             default:
1580                 goto fail_decode;
1581             }
1582         } else {
1583             switch(ist->st->codec->codec_type) {
1584             case AVMEDIA_TYPE_AUDIO:
1585                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1586                     ist->st->codec->sample_rate;
1587                 break;
1588             case AVMEDIA_TYPE_VIDEO:
1589                 if (ist->st->codec->time_base.num != 0) {
1590                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1591                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1592                                       ist->st->codec->time_base.num * ticks) /
1593                         ist->st->codec->time_base.den;
1594                 }
1595                 break;
1596             }
1597             ret = avpkt.size;
1598             avpkt.size = 0;
1599         }
1600
1601         buffer_to_free = NULL;
1602         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1603             pre_process_video_frame(ist, (AVPicture *)&picture,
1604                                     &buffer_to_free);
1605         }
1606
1607 #if CONFIG_AVFILTER
1608         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ist->input_video_filter) {
1609             // add it to be filtered
1610             av_vsrc_buffer_add_frame(ist->input_video_filter, &picture,
1611                                      ist->pts,
1612                                      ist->st->codec->sample_aspect_ratio);
1613         }
1614 #endif
1615
1616         // preprocess audio (volume)
1617         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1618             if (audio_volume != 256) {
1619                 short *volp;
1620                 volp = samples;
1621                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1622                     int v = ((*volp) * audio_volume + 128) >> 8;
1623                     if (v < -32768) v = -32768;
1624                     if (v >  32767) v = 32767;
1625                     *volp++ = v;
1626                 }
1627             }
1628         }
1629
1630         /* frame rate emulation */
1631         if (rate_emu) {
1632             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1633             int64_t now = av_gettime() - ist->start;
1634             if (pts > now)
1635                 usleep(pts - now);
1636         }
1637 #if CONFIG_AVFILTER
1638         frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1639             !ist->output_video_filter || avfilter_poll_frame(ist->output_video_filter->inputs[0]);
1640 #endif
1641         /* if output time reached then transcode raw format,
1642            encode packets and output them */
1643         if (start_time == 0 || ist->pts >= start_time)
1644 #if CONFIG_AVFILTER
1645         while (frame_available) {
1646             AVRational ist_pts_tb;
1647             if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ist->output_video_filter)
1648                 get_filtered_video_frame(ist->output_video_filter, &picture, &ist->picref, &ist_pts_tb);
1649             if (ist->picref)
1650                 ist->pts = av_rescale_q(ist->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1651 #endif
1652             for(i=0;i<nb_ostreams;i++) {
1653                 int frame_size;
1654
1655                 ost = ost_table[i];
1656                 if (ost->source_index == ist_index) {
1657                     os = output_files[ost->file_index];
1658
1659                     /* set the input output pts pairs */
1660                     //ost->sync_ipts = (double)(ist->pts + input_files_ts_offset[ist->file_index] - start_time)/ AV_TIME_BASE;
1661
1662                     if (ost->encoding_needed) {
1663                         av_assert0(ist->decoding_needed);
1664                         switch(ost->st->codec->codec_type) {
1665                         case AVMEDIA_TYPE_AUDIO:
1666                             do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1667                             break;
1668                         case AVMEDIA_TYPE_VIDEO:
1669 #if CONFIG_AVFILTER
1670                             if (ist->picref->video)
1671                                 ost->st->codec->sample_aspect_ratio = ist->picref->video->pixel_aspect;
1672 #endif
1673                             do_video_out(os, ost, ist, &picture, &frame_size);
1674                             if (vstats_filename && frame_size)
1675                                 do_video_stats(os, ost, frame_size);
1676                             break;
1677                         case AVMEDIA_TYPE_SUBTITLE:
1678                             do_subtitle_out(os, ost, ist, &subtitle,
1679                                             pkt->pts);
1680                             break;
1681                         default:
1682                             abort();
1683                         }
1684                     } else {
1685                         AVFrame avframe; //FIXME/XXX remove this
1686                         AVPacket opkt;
1687                         int64_t ost_tb_start_time= av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1688
1689                         av_init_packet(&opkt);
1690
1691                         if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1692                             continue;
1693
1694                         /* no reencoding needed : output the packet directly */
1695                         /* force the input stream PTS */
1696
1697                         avcodec_get_frame_defaults(&avframe);
1698                         ost->st->codec->coded_frame= &avframe;
1699                         avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1700
1701                         if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1702                             audio_size += data_size;
1703                         else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1704                             video_size += data_size;
1705                             ost->sync_opts++;
1706                         }
1707
1708                         opkt.stream_index= ost->index;
1709                         if(pkt->pts != AV_NOPTS_VALUE)
1710                             opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1711                         else
1712                             opkt.pts= AV_NOPTS_VALUE;
1713
1714                         if (pkt->dts == AV_NOPTS_VALUE)
1715                             opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1716                         else
1717                             opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1718                         opkt.dts -= ost_tb_start_time;
1719
1720                         opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1721                         opkt.flags= pkt->flags;
1722
1723                         //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1724                         if(   ost->st->codec->codec_id != CODEC_ID_H264
1725                            && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1726                            && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1727                            ) {
1728                             if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1729                                 opkt.destruct= av_destruct_packet;
1730                         } else {
1731                             opkt.data = data_buf;
1732                             opkt.size = data_size;
1733                         }
1734
1735                         write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1736                         ost->st->codec->frame_number++;
1737                         ost->frame_number++;
1738                         av_free_packet(&opkt);
1739                     }
1740                 }
1741             }
1742
1743 #if CONFIG_AVFILTER
1744             frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1745                               ist->output_video_filter && avfilter_poll_frame(ist->output_video_filter->inputs[0]);
1746             if(ist->picref)
1747                 avfilter_unref_buffer(ist->picref);
1748         }
1749 #endif
1750         av_free(buffer_to_free);
1751         /* XXX: allocate the subtitles in the codec ? */
1752         if (subtitle_to_free) {
1753             avsubtitle_free(subtitle_to_free);
1754             subtitle_to_free = NULL;
1755         }
1756     }
1757  discard_packet:
1758     if (pkt == NULL) {
1759         /* EOF handling */
1760
1761         for(i=0;i<nb_ostreams;i++) {
1762             ost = ost_table[i];
1763             if (ost->source_index == ist_index) {
1764                 AVCodecContext *enc= ost->st->codec;
1765                 os = output_files[ost->file_index];
1766
1767                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1768                     continue;
1769                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1770                     continue;
1771
1772                 if (ost->encoding_needed) {
1773                     for(;;) {
1774                         AVPacket pkt;
1775                         int fifo_bytes;
1776                         av_init_packet(&pkt);
1777                         pkt.stream_index= ost->index;
1778
1779                         switch(ost->st->codec->codec_type) {
1780                         case AVMEDIA_TYPE_AUDIO:
1781                             fifo_bytes = av_fifo_size(ost->fifo);
1782                             ret = 0;
1783                             /* encode any samples remaining in fifo */
1784                             if (fifo_bytes > 0) {
1785                                 int osize = av_get_bits_per_sample_fmt(enc->sample_fmt) >> 3;
1786                                 int fs_tmp = enc->frame_size;
1787
1788                                 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1789                                 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1790                                     enc->frame_size = fifo_bytes / (osize * enc->channels);
1791                                 } else { /* pad */
1792                                     int frame_bytes = enc->frame_size*osize*enc->channels;
1793                                     if (allocated_audio_buf_size < frame_bytes)
1794                                         ffmpeg_exit(1);
1795                                     memset(audio_buf+fifo_bytes, 0, frame_bytes - fifo_bytes);
1796                                 }
1797
1798                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1799                                 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1800                                                           ost->st->time_base.num, enc->sample_rate);
1801                                 enc->frame_size = fs_tmp;
1802                             }
1803                             if(ret <= 0) {
1804                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1805                             }
1806                             if (ret < 0) {
1807                                 fprintf(stderr, "Audio encoding failed\n");
1808                                 ffmpeg_exit(1);
1809                             }
1810                             audio_size += ret;
1811                             pkt.flags |= AV_PKT_FLAG_KEY;
1812                             break;
1813                         case AVMEDIA_TYPE_VIDEO:
1814                             ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1815                             if (ret < 0) {
1816                                 fprintf(stderr, "Video encoding failed\n");
1817                                 ffmpeg_exit(1);
1818                             }
1819                             video_size += ret;
1820                             if(enc->coded_frame && enc->coded_frame->key_frame)
1821                                 pkt.flags |= AV_PKT_FLAG_KEY;
1822                             if (ost->logfile && enc->stats_out) {
1823                                 fprintf(ost->logfile, "%s", enc->stats_out);
1824                             }
1825                             break;
1826                         default:
1827                             ret=-1;
1828                         }
1829
1830                         if(ret<=0)
1831                             break;
1832                         pkt.data= bit_buffer;
1833                         pkt.size= ret;
1834                         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1835                             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1836                         write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1837                     }
1838                 }
1839             }
1840         }
1841     }
1842
1843     return 0;
1844  fail_decode:
1845     return -1;
1846 }
1847
1848 static void print_sdp(AVFormatContext **avc, int n)
1849 {
1850     char sdp[2048];
1851
1852     avf_sdp_create(avc, n, sdp, sizeof(sdp));
1853     printf("SDP:\n%s\n", sdp);
1854     fflush(stdout);
1855 }
1856
1857 static int copy_chapters(int infile, int outfile)
1858 {
1859     AVFormatContext *is = input_files[infile];
1860     AVFormatContext *os = output_files[outfile];
1861     int i;
1862
1863     for (i = 0; i < is->nb_chapters; i++) {
1864         AVChapter *in_ch = is->chapters[i], *out_ch;
1865         int64_t ts_off   = av_rescale_q(start_time - input_files_ts_offset[infile],
1866                                       AV_TIME_BASE_Q, in_ch->time_base);
1867         int64_t rt       = (recording_time == INT64_MAX) ? INT64_MAX :
1868                            av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
1869
1870
1871         if (in_ch->end < ts_off)
1872             continue;
1873         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
1874             break;
1875
1876         out_ch = av_mallocz(sizeof(AVChapter));
1877         if (!out_ch)
1878             return AVERROR(ENOMEM);
1879
1880         out_ch->id        = in_ch->id;
1881         out_ch->time_base = in_ch->time_base;
1882         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
1883         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
1884
1885         if (metadata_chapters_autocopy)
1886             av_metadata_copy(&out_ch->metadata, in_ch->metadata, 0);
1887
1888         os->nb_chapters++;
1889         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
1890         if (!os->chapters)
1891             return AVERROR(ENOMEM);
1892         os->chapters[os->nb_chapters - 1] = out_ch;
1893     }
1894     return 0;
1895 }
1896
1897 static void parse_forced_key_frames(char *kf, AVOutputStream *ost,
1898                                     AVCodecContext *avctx)
1899 {
1900     char *p;
1901     int n = 1, i;
1902     int64_t t;
1903
1904     for (p = kf; *p; p++)
1905         if (*p == ',')
1906             n++;
1907     ost->forced_kf_count = n;
1908     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1909     if (!ost->forced_kf_pts) {
1910         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1911         ffmpeg_exit(1);
1912     }
1913     for (i = 0; i < n; i++) {
1914         p = i ? strchr(p, ',') + 1 : kf;
1915         t = parse_time_or_die("force_key_frames", p, 1);
1916         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1917     }
1918 }
1919
1920 /*
1921  * The following code is the main loop of the file converter
1922  */
1923 static int transcode(AVFormatContext **output_files,
1924                      int nb_output_files,
1925                      AVFormatContext **input_files,
1926                      int nb_input_files,
1927                      AVStreamMap *stream_maps, int nb_stream_maps)
1928 {
1929     int ret = 0, i, j, k, n, nb_istreams = 0, nb_ostreams = 0;
1930     AVFormatContext *is, *os;
1931     AVCodecContext *codec, *icodec;
1932     AVOutputStream *ost, **ost_table = NULL;
1933     AVInputStream *ist, **ist_table = NULL;
1934     AVInputFile *file_table;
1935     char error[1024];
1936     int key;
1937     int want_sdp = 1;
1938     uint8_t no_packet[MAX_FILES]={0};
1939     int no_packet_count=0;
1940
1941     file_table= av_mallocz(nb_input_files * sizeof(AVInputFile));
1942     if (!file_table)
1943         goto fail;
1944
1945     /* input stream init */
1946     j = 0;
1947     for(i=0;i<nb_input_files;i++) {
1948         is = input_files[i];
1949         file_table[i].ist_index = j;
1950         file_table[i].nb_streams = is->nb_streams;
1951         j += is->nb_streams;
1952     }
1953     nb_istreams = j;
1954
1955     ist_table = av_mallocz(nb_istreams * sizeof(AVInputStream *));
1956     if (!ist_table)
1957         goto fail;
1958
1959     for(i=0;i<nb_istreams;i++) {
1960         ist = av_mallocz(sizeof(AVInputStream));
1961         if (!ist)
1962             goto fail;
1963         ist_table[i] = ist;
1964     }
1965     j = 0;
1966     for(i=0;i<nb_input_files;i++) {
1967         is = input_files[i];
1968         for(k=0;k<is->nb_streams;k++) {
1969             ist = ist_table[j++];
1970             ist->st = is->streams[k];
1971             ist->file_index = i;
1972             ist->index = k;
1973             ist->discard = 1; /* the stream is discarded by default
1974                                  (changed later) */
1975
1976             if (rate_emu) {
1977                 ist->start = av_gettime();
1978             }
1979         }
1980     }
1981
1982     /* output stream init */
1983     nb_ostreams = 0;
1984     for(i=0;i<nb_output_files;i++) {
1985         os = output_files[i];
1986         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1987             dump_format(output_files[i], i, output_files[i]->filename, 1);
1988             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
1989             ret = AVERROR(EINVAL);
1990             goto fail;
1991         }
1992         nb_ostreams += os->nb_streams;
1993     }
1994     if (nb_stream_maps > 0 && nb_stream_maps != nb_ostreams) {
1995         fprintf(stderr, "Number of stream maps must match number of output streams\n");
1996         ret = AVERROR(EINVAL);
1997         goto fail;
1998     }
1999
2000     /* Sanity check the mapping args -- do the input files & streams exist? */
2001     for(i=0;i<nb_stream_maps;i++) {
2002         int fi = stream_maps[i].file_index;
2003         int si = stream_maps[i].stream_index;
2004
2005         if (fi < 0 || fi > nb_input_files - 1 ||
2006             si < 0 || si > file_table[fi].nb_streams - 1) {
2007             fprintf(stderr,"Could not find input stream #%d.%d\n", fi, si);
2008             ret = AVERROR(EINVAL);
2009             goto fail;
2010         }
2011         fi = stream_maps[i].sync_file_index;
2012         si = stream_maps[i].sync_stream_index;
2013         if (fi < 0 || fi > nb_input_files - 1 ||
2014             si < 0 || si > file_table[fi].nb_streams - 1) {
2015             fprintf(stderr,"Could not find sync stream #%d.%d\n", fi, si);
2016             ret = AVERROR(EINVAL);
2017             goto fail;
2018         }
2019     }
2020
2021     ost_table = av_mallocz(sizeof(AVOutputStream *) * nb_ostreams);
2022     if (!ost_table)
2023         goto fail;
2024     n = 0;
2025     for(k=0;k<nb_output_files;k++) {
2026         os = output_files[k];
2027         for(i=0;i<os->nb_streams;i++,n++) {
2028             int found;
2029             ost = ost_table[n] = output_streams_for_file[k][i];
2030             ost->st = os->streams[i];
2031             if (nb_stream_maps > 0) {
2032                 ost->source_index = file_table[stream_maps[n].file_index].ist_index +
2033                     stream_maps[n].stream_index;
2034
2035                 /* Sanity check that the stream types match */
2036                 if (ist_table[ost->source_index]->st->codec->codec_type != ost->st->codec->codec_type) {
2037                     int i= ost->file_index;
2038                     dump_format(output_files[i], i, output_files[i]->filename, 1);
2039                     fprintf(stderr, "Codec type mismatch for mapping #%d.%d -> #%d.%d\n",
2040                         stream_maps[n].file_index, stream_maps[n].stream_index,
2041                         ost->file_index, ost->index);
2042                     ffmpeg_exit(1);
2043                 }
2044
2045             } else {
2046                 int best_nb_frames=-1;
2047                 /* get corresponding input stream index : we select the first one with the right type */
2048                 found = 0;
2049                 for(j=0;j<nb_istreams;j++) {
2050                     int skip=0;
2051                     ist = ist_table[j];
2052                     if(opt_programid){
2053                         int pi,si;
2054                         AVFormatContext *f= input_files[ ist->file_index ];
2055                         skip=1;
2056                         for(pi=0; pi<f->nb_programs; pi++){
2057                             AVProgram *p= f->programs[pi];
2058                             if(p->id == opt_programid)
2059                                 for(si=0; si<p->nb_stream_indexes; si++){
2060                                     if(f->streams[ p->stream_index[si] ] == ist->st)
2061                                         skip=0;
2062                                 }
2063                         }
2064                     }
2065                     if (ist->discard && ist->st->discard != AVDISCARD_ALL && !skip &&
2066                         ist->st->codec->codec_type == ost->st->codec->codec_type) {
2067                         if(best_nb_frames < ist->st->codec_info_nb_frames){
2068                             best_nb_frames= ist->st->codec_info_nb_frames;
2069                             ost->source_index = j;
2070                             found = 1;
2071                         }
2072                     }
2073                 }
2074
2075                 if (!found) {
2076                     if(! opt_programid) {
2077                         /* try again and reuse existing stream */
2078                         for(j=0;j<nb_istreams;j++) {
2079                             ist = ist_table[j];
2080                             if (   ist->st->codec->codec_type == ost->st->codec->codec_type
2081                                 && ist->st->discard != AVDISCARD_ALL) {
2082                                 ost->source_index = j;
2083                                 found = 1;
2084                             }
2085                         }
2086                     }
2087                     if (!found) {
2088                         int i= ost->file_index;
2089                         dump_format(output_files[i], i, output_files[i]->filename, 1);
2090                         fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",
2091                                 ost->file_index, ost->index);
2092                         ffmpeg_exit(1);
2093                     }
2094                 }
2095             }
2096             ist = ist_table[ost->source_index];
2097             ist->discard = 0;
2098             ost->sync_ist = (nb_stream_maps > 0) ?
2099                 ist_table[file_table[stream_maps[n].sync_file_index].ist_index +
2100                          stream_maps[n].sync_stream_index] : ist;
2101         }
2102     }
2103
2104     /* for each output stream, we compute the right encoding parameters */
2105     for(i=0;i<nb_ostreams;i++) {
2106         ost = ost_table[i];
2107         os = output_files[ost->file_index];
2108         ist = ist_table[ost->source_index];
2109
2110         codec = ost->st->codec;
2111         icodec = ist->st->codec;
2112
2113         if (metadata_streams_autocopy)
2114             av_metadata_copy(&ost->st->metadata, ist->st->metadata,
2115                              AV_METADATA_DONT_OVERWRITE);
2116
2117         ost->st->disposition = ist->st->disposition;
2118         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2119         codec->chroma_sample_location = icodec->chroma_sample_location;
2120
2121         if (ost->st->stream_copy) {
2122             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2123
2124             if (extra_size > INT_MAX)
2125                 goto fail;
2126
2127             /* if stream_copy is selected, no need to decode or encode */
2128             codec->codec_id = icodec->codec_id;
2129             codec->codec_type = icodec->codec_type;
2130
2131             if(!codec->codec_tag){
2132                 if(   !os->oformat->codec_tag
2133                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2134                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2135                     codec->codec_tag = icodec->codec_tag;
2136             }
2137
2138             codec->bit_rate = icodec->bit_rate;
2139             codec->rc_max_rate    = icodec->rc_max_rate;
2140             codec->rc_buffer_size = icodec->rc_buffer_size;
2141             codec->extradata= av_mallocz(extra_size);
2142             if (!codec->extradata)
2143                 goto fail;
2144             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2145             codec->extradata_size= icodec->extradata_size;
2146             if(av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base) && av_q2d(ist->st->time_base) < 1.0/1000){
2147                 codec->time_base = icodec->time_base;
2148                 codec->time_base.num *= icodec->ticks_per_frame;
2149                 av_reduce(&codec->time_base.num, &codec->time_base.den,
2150                           codec->time_base.num, codec->time_base.den, INT_MAX);
2151             }else
2152                 codec->time_base = ist->st->time_base;
2153             switch(codec->codec_type) {
2154             case AVMEDIA_TYPE_AUDIO:
2155                 if(audio_volume != 256) {
2156                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2157                     ffmpeg_exit(1);
2158                 }
2159                 codec->channel_layout = icodec->channel_layout;
2160                 codec->sample_rate = icodec->sample_rate;
2161                 codec->channels = icodec->channels;
2162                 codec->frame_size = icodec->frame_size;
2163                 codec->block_align= icodec->block_align;
2164                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2165                     codec->block_align= 0;
2166                 if(codec->codec_id == CODEC_ID_AC3)
2167                     codec->block_align= 0;
2168                 break;
2169             case AVMEDIA_TYPE_VIDEO:
2170                 codec->pix_fmt = icodec->pix_fmt;
2171                 codec->width = icodec->width;
2172                 codec->height = icodec->height;
2173                 codec->has_b_frames = icodec->has_b_frames;
2174                 break;
2175             case AVMEDIA_TYPE_SUBTITLE:
2176                 codec->width = icodec->width;
2177                 codec->height = icodec->height;
2178                 break;
2179             default:
2180                 abort();
2181             }
2182         } else {
2183             switch(codec->codec_type) {
2184             case AVMEDIA_TYPE_AUDIO:
2185                 ost->fifo= av_fifo_alloc(1024);
2186                 if(!ost->fifo)
2187                     goto fail;
2188                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2189                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2190                 icodec->request_channels = codec->channels;
2191                 ist->decoding_needed = 1;
2192                 ost->encoding_needed = 1;
2193                 ost->resample_sample_fmt  = icodec->sample_fmt;
2194                 ost->resample_sample_rate = icodec->sample_rate;
2195                 ost->resample_channels    = icodec->channels;
2196                 break;
2197             case AVMEDIA_TYPE_VIDEO:
2198                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2199                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2200                     ffmpeg_exit(1);
2201                 }
2202                 ost->video_resample = (codec->width != icodec->width   ||
2203                                        codec->height != icodec->height ||
2204                         (codec->pix_fmt != icodec->pix_fmt));
2205                 if (ost->video_resample) {
2206 #if !CONFIG_AVFILTER
2207                     avcodec_get_frame_defaults(&ost->pict_tmp);
2208                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2209                                          codec->width, codec->height)) {
2210                         fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
2211                         ffmpeg_exit(1);
2212                     }
2213                     sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
2214                     ost->img_resample_ctx = sws_getContext(
2215                         icodec->width,
2216                         icodec->height,
2217                             icodec->pix_fmt,
2218                             codec->width,
2219                             codec->height,
2220                             codec->pix_fmt,
2221                             sws_flags, NULL, NULL, NULL);
2222                     if (ost->img_resample_ctx == NULL) {
2223                         fprintf(stderr, "Cannot get resampling context\n");
2224                         ffmpeg_exit(1);
2225                     }
2226
2227                     ost->original_height = icodec->height;
2228                     ost->original_width  = icodec->width;
2229 #endif
2230                     codec->bits_per_raw_sample= 0;
2231                 }
2232                 ost->resample_height = icodec->height;
2233                 ost->resample_width  = icodec->width;
2234                 ost->resample_pix_fmt= icodec->pix_fmt;
2235                 ost->encoding_needed = 1;
2236                 ist->decoding_needed = 1;
2237
2238 #if CONFIG_AVFILTER
2239                 if (configure_filters(ist, ost)) {
2240                     fprintf(stderr, "Error opening filters!\n");
2241                     exit(1);
2242                 }
2243 #endif
2244                 break;
2245             case AVMEDIA_TYPE_SUBTITLE:
2246                 ost->encoding_needed = 1;
2247                 ist->decoding_needed = 1;
2248                 break;
2249             default:
2250                 abort();
2251                 break;
2252             }
2253             /* two pass mode */
2254             if (ost->encoding_needed &&
2255                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2256                 char logfilename[1024];
2257                 FILE *f;
2258
2259                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2260                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2261                          i);
2262                 if (codec->flags & CODEC_FLAG_PASS1) {
2263                     f = fopen(logfilename, "wb");
2264                     if (!f) {
2265                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2266                         ffmpeg_exit(1);
2267                     }
2268                     ost->logfile = f;
2269                 } else {
2270                     char  *logbuffer;
2271                     size_t logbuffer_size;
2272                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2273                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2274                         ffmpeg_exit(1);
2275                     }
2276                     codec->stats_in = logbuffer;
2277                 }
2278             }
2279         }
2280         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2281             int size= codec->width * codec->height;
2282             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2283         }
2284     }
2285
2286     if (!bit_buffer)
2287         bit_buffer = av_malloc(bit_buffer_size);
2288     if (!bit_buffer) {
2289         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2290                 bit_buffer_size);
2291         ret = AVERROR(ENOMEM);
2292         goto fail;
2293     }
2294
2295     /* open each encoder */
2296     for(i=0;i<nb_ostreams;i++) {
2297         ost = ost_table[i];
2298         if (ost->encoding_needed) {
2299             AVCodec *codec = i < nb_output_codecs ? output_codecs[i] : NULL;
2300             AVCodecContext *dec = ist_table[ost->source_index]->st->codec;
2301             if (!codec)
2302                 codec = avcodec_find_encoder(ost->st->codec->codec_id);
2303             if (!codec) {
2304                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2305                          ost->st->codec->codec_id, ost->file_index, ost->index);
2306                 ret = AVERROR(EINVAL);
2307                 goto dump_format;
2308             }
2309             if (dec->subtitle_header) {
2310                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2311                 if (!ost->st->codec->subtitle_header) {
2312                     ret = AVERROR(ENOMEM);
2313                     goto dump_format;
2314                 }
2315                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2316                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2317             }
2318             if (avcodec_open(ost->st->codec, codec) < 0) {
2319                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2320                         ost->file_index, ost->index);
2321                 ret = AVERROR(EINVAL);
2322                 goto dump_format;
2323             }
2324             extra_size += ost->st->codec->extradata_size;
2325         }
2326     }
2327
2328     /* open each decoder */
2329     for(i=0;i<nb_istreams;i++) {
2330         ist = ist_table[i];
2331         if (ist->decoding_needed) {
2332             AVCodec *codec = i < nb_input_codecs ? input_codecs[i] : NULL;
2333             if (!codec)
2334                 codec = avcodec_find_decoder(ist->st->codec->codec_id);
2335             if (!codec) {
2336                 snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
2337                         ist->st->codec->codec_id, ist->file_index, ist->index);
2338                 ret = AVERROR(EINVAL);
2339                 goto dump_format;
2340             }
2341             if (avcodec_open(ist->st->codec, codec) < 0) {
2342                 snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
2343                         ist->file_index, ist->index);
2344                 ret = AVERROR(EINVAL);
2345                 goto dump_format;
2346             }
2347             //if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2348             //    ist->st->codec->flags |= CODEC_FLAG_REPEAT_FIELD;
2349         }
2350     }
2351
2352     /* init pts */
2353     for(i=0;i<nb_istreams;i++) {
2354         AVStream *st;
2355         ist = ist_table[i];
2356         st= ist->st;
2357         ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
2358         ist->next_pts = AV_NOPTS_VALUE;
2359         init_pts_correction(&ist->pts_ctx);
2360         ist->is_start = 1;
2361     }
2362
2363     /* set meta data information from input file if required */
2364     for (i=0;i<nb_meta_data_maps;i++) {
2365         AVFormatContext *files[2];
2366         AVMetadata      **meta[2];
2367         int j;
2368
2369 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
2370         if ((index) < 0 || (index) >= (nb_elems)) {\
2371             snprintf(error, sizeof(error), "Invalid %s index %d while processing metadata maps\n",\
2372                      (desc), (index));\
2373             ret = AVERROR(EINVAL);\
2374             goto dump_format;\
2375         }
2376
2377         int out_file_index = meta_data_maps[i][0].file;
2378         int in_file_index = meta_data_maps[i][1].file;
2379         if (in_file_index < 0 || out_file_index < 0)
2380             continue;
2381         METADATA_CHECK_INDEX(out_file_index, nb_output_files, "output file")
2382         METADATA_CHECK_INDEX(in_file_index, nb_input_files, "input file")
2383
2384         files[0] = output_files[out_file_index];
2385         files[1] = input_files[in_file_index];
2386
2387         for (j = 0; j < 2; j++) {
2388             AVMetaDataMap *map = &meta_data_maps[i][j];
2389
2390             switch (map->type) {
2391             case 'g':
2392                 meta[j] = &files[j]->metadata;
2393                 break;
2394             case 's':
2395                 METADATA_CHECK_INDEX(map->index, files[j]->nb_streams, "stream")
2396                 meta[j] = &files[j]->streams[map->index]->metadata;
2397                 break;
2398             case 'c':
2399                 METADATA_CHECK_INDEX(map->index, files[j]->nb_chapters, "chapter")
2400                 meta[j] = &files[j]->chapters[map->index]->metadata;
2401                 break;
2402             case 'p':
2403                 METADATA_CHECK_INDEX(map->index, files[j]->nb_programs, "program")
2404                 meta[j] = &files[j]->programs[map->index]->metadata;
2405                 break;
2406             }
2407         }
2408
2409         av_metadata_copy(meta[0], *meta[1], AV_METADATA_DONT_OVERWRITE);
2410     }
2411
2412     /* copy global metadata by default */
2413     if (metadata_global_autocopy) {
2414
2415         for (i = 0; i < nb_output_files; i++)
2416             av_metadata_copy(&output_files[i]->metadata, input_files[0]->metadata,
2417                              AV_METADATA_DONT_OVERWRITE);
2418     }
2419
2420     /* copy chapters according to chapter maps */
2421     for (i = 0; i < nb_chapter_maps; i++) {
2422         int infile  = chapter_maps[i].in_file;
2423         int outfile = chapter_maps[i].out_file;
2424
2425         if (infile < 0 || outfile < 0)
2426             continue;
2427         if (infile >= nb_input_files) {
2428             snprintf(error, sizeof(error), "Invalid input file index %d in chapter mapping.\n", infile);
2429             ret = AVERROR(EINVAL);
2430             goto dump_format;
2431         }
2432         if (outfile >= nb_output_files) {
2433             snprintf(error, sizeof(error), "Invalid output file index %d in chapter mapping.\n",outfile);
2434             ret = AVERROR(EINVAL);
2435             goto dump_format;
2436         }
2437         copy_chapters(infile, outfile);
2438     }
2439
2440     /* copy chapters from the first input file that has them*/
2441     if (!nb_chapter_maps)
2442         for (i = 0; i < nb_input_files; i++) {
2443             if (!input_files[i]->nb_chapters)
2444                 continue;
2445
2446             for (j = 0; j < nb_output_files; j++)
2447                 if ((ret = copy_chapters(i, j)) < 0)
2448                     goto dump_format;
2449             break;
2450         }
2451
2452     /* open files and write file headers */
2453     for(i=0;i<nb_output_files;i++) {
2454         os = output_files[i];
2455         if (av_write_header(os) < 0) {
2456             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2457             ret = AVERROR(EINVAL);
2458             goto dump_format;
2459         }
2460         if (strcmp(output_files[i]->oformat->name, "rtp")) {
2461             want_sdp = 0;
2462         }
2463     }
2464
2465  dump_format:
2466     /* dump the file output parameters - cannot be done before in case
2467        of stream copy */
2468     for(i=0;i<nb_output_files;i++) {
2469         dump_format(output_files[i], i, output_files[i]->filename, 1);
2470     }
2471
2472     /* dump the stream mapping */
2473     if (verbose >= 0) {
2474         fprintf(stderr, "Stream mapping:\n");
2475         for(i=0;i<nb_ostreams;i++) {
2476             ost = ost_table[i];
2477             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2478                     ist_table[ost->source_index]->file_index,
2479                     ist_table[ost->source_index]->index,
2480                     ost->file_index,
2481                     ost->index);
2482             if (ost->sync_ist != ist_table[ost->source_index])
2483                 fprintf(stderr, " [sync #%d.%d]",
2484                         ost->sync_ist->file_index,
2485                         ost->sync_ist->index);
2486             fprintf(stderr, "\n");
2487         }
2488     }
2489
2490     if (ret) {
2491         fprintf(stderr, "%s\n", error);
2492         goto fail;
2493     }
2494
2495     if (want_sdp) {
2496         print_sdp(output_files, nb_output_files);
2497     }
2498
2499     if (!using_stdin && verbose >= 0) {
2500         fprintf(stderr, "Press [q] to stop encoding\n");
2501         url_set_interrupt_cb(decode_interrupt_cb);
2502     }
2503     term_init();
2504
2505     timer_start = av_gettime();
2506
2507     for(; received_sigterm == 0;) {
2508         int file_index, ist_index;
2509         AVPacket pkt;
2510         double ipts_min;
2511         double opts_min;
2512
2513     redo:
2514         ipts_min= 1e100;
2515         opts_min= 1e100;
2516         /* if 'q' pressed, exits */
2517         if (!using_stdin) {
2518             if (q_pressed)
2519                 break;
2520             /* read_key() returns 0 on EOF */
2521             key = read_key();
2522             if (key == 'q')
2523                 break;
2524         }
2525
2526         /* select the stream that we must read now by looking at the
2527            smallest output pts */
2528         file_index = -1;
2529         for(i=0;i<nb_ostreams;i++) {
2530             double ipts, opts;
2531             ost = ost_table[i];
2532             os = output_files[ost->file_index];
2533             ist = ist_table[ost->source_index];
2534             if(ist->is_past_recording_time || no_packet[ist->file_index])
2535                 continue;
2536                 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2537             ipts = (double)ist->pts;
2538             if (!file_table[ist->file_index].eof_reached){
2539                 if(ipts < ipts_min) {
2540                     ipts_min = ipts;
2541                     if(input_sync ) file_index = ist->file_index;
2542                 }
2543                 if(opts < opts_min) {
2544                     opts_min = opts;
2545                     if(!input_sync) file_index = ist->file_index;
2546                 }
2547             }
2548             if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
2549                 file_index= -1;
2550                 break;
2551             }
2552         }
2553         /* if none, if is finished */
2554         if (file_index < 0) {
2555             if(no_packet_count){
2556                 no_packet_count=0;
2557                 memset(no_packet, 0, sizeof(no_packet));
2558                 usleep(10000);
2559                 continue;
2560             }
2561             break;
2562         }
2563
2564         /* finish if limit size exhausted */
2565         if (limit_filesize != 0 && limit_filesize <= url_ftell(output_files[0]->pb))
2566             break;
2567
2568         /* read a frame from it and output it in the fifo */
2569         is = input_files[file_index];
2570         ret= av_read_frame(is, &pkt);
2571         if(ret == AVERROR(EAGAIN)){
2572             no_packet[file_index]=1;
2573             no_packet_count++;
2574             continue;
2575         }
2576         if (ret < 0) {
2577             file_table[file_index].eof_reached = 1;
2578             if (opt_shortest)
2579                 break;
2580             else
2581                 continue;
2582         }
2583
2584         no_packet_count=0;
2585         memset(no_packet, 0, sizeof(no_packet));
2586
2587         if (do_pkt_dump) {
2588             av_pkt_dump_log(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump);
2589         }
2590         /* the following test is needed in case new streams appear
2591            dynamically in stream : we ignore them */
2592         if (pkt.stream_index >= file_table[file_index].nb_streams)
2593             goto discard_packet;
2594         ist_index = file_table[file_index].ist_index + pkt.stream_index;
2595         ist = ist_table[ist_index];
2596         if (ist->discard)
2597             goto discard_packet;
2598
2599         if (pkt.dts != AV_NOPTS_VALUE)
2600             pkt.dts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2601         if (pkt.pts != AV_NOPTS_VALUE)
2602             pkt.pts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2603
2604         if (pkt.stream_index < nb_input_files_ts_scale[file_index]
2605             && input_files_ts_scale[file_index][pkt.stream_index]){
2606             if(pkt.pts != AV_NOPTS_VALUE)
2607                 pkt.pts *= input_files_ts_scale[file_index][pkt.stream_index];
2608             if(pkt.dts != AV_NOPTS_VALUE)
2609                 pkt.dts *= input_files_ts_scale[file_index][pkt.stream_index];
2610         }
2611
2612 //        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);
2613         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2614             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2615             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2616             int64_t delta= pkt_dts - ist->next_pts;
2617             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2618                 input_files_ts_offset[ist->file_index]-= delta;
2619                 if (verbose > 2)
2620                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n", delta, input_files_ts_offset[ist->file_index]);
2621                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2622                 if(pkt.pts != AV_NOPTS_VALUE)
2623                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2624             }
2625         }
2626
2627         /* finish if recording time exhausted */
2628         if (recording_time != INT64_MAX &&
2629             av_compare_ts(pkt.pts, ist->st->time_base, recording_time + start_time, (AVRational){1, 1000000}) >= 0) {
2630             ist->is_past_recording_time = 1;
2631             goto discard_packet;
2632         }
2633
2634         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->index, pkt.size);
2635         if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
2636
2637             if (verbose >= 0)
2638                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2639                         ist->file_index, ist->index);
2640             if (exit_on_error)
2641                 ffmpeg_exit(1);
2642             av_free_packet(&pkt);
2643             goto redo;
2644         }
2645
2646     discard_packet:
2647         av_free_packet(&pkt);
2648
2649         /* dump report by using the output first video and audio streams */
2650         print_report(output_files, ost_table, nb_ostreams, 0);
2651     }
2652
2653     /* at the end of stream, we must flush the decoder buffers */
2654     for(i=0;i<nb_istreams;i++) {
2655         ist = ist_table[i];
2656         if (ist->decoding_needed) {
2657             output_packet(ist, i, ost_table, nb_ostreams, NULL);
2658         }
2659     }
2660
2661     term_exit();
2662
2663     /* write the trailer if needed and close file */
2664     for(i=0;i<nb_output_files;i++) {
2665         os = output_files[i];
2666         av_write_trailer(os);
2667     }
2668
2669     /* dump report by using the first video and audio streams */
2670     print_report(output_files, ost_table, nb_ostreams, 1);
2671
2672     /* close each encoder */
2673     for(i=0;i<nb_ostreams;i++) {
2674         ost = ost_table[i];
2675         if (ost->encoding_needed) {
2676             av_freep(&ost->st->codec->stats_in);
2677             avcodec_close(ost->st->codec);
2678         }
2679     }
2680
2681     /* close each decoder */
2682     for(i=0;i<nb_istreams;i++) {
2683         ist = ist_table[i];
2684         if (ist->decoding_needed) {
2685             avcodec_close(ist->st->codec);
2686         }
2687     }
2688 #if CONFIG_AVFILTER
2689     if (graph) {
2690         avfilter_graph_free(graph);
2691         av_freep(&graph);
2692     }
2693 #endif
2694
2695     /* finished ! */
2696     ret = 0;
2697
2698  fail:
2699     av_freep(&bit_buffer);
2700     av_free(file_table);
2701
2702     if (ist_table) {
2703         for(i=0;i<nb_istreams;i++) {
2704             ist = ist_table[i];
2705             av_free(ist);
2706         }
2707         av_free(ist_table);
2708     }
2709     if (ost_table) {
2710         for(i=0;i<nb_ostreams;i++) {
2711             ost = ost_table[i];
2712             if (ost) {
2713                 if (ost->st->stream_copy)
2714                     av_freep(&ost->st->codec->extradata);
2715                 if (ost->logfile) {
2716                     fclose(ost->logfile);
2717                     ost->logfile = NULL;
2718                 }
2719                 av_fifo_free(ost->fifo); /* works even if fifo is not
2720                                              initialized but set to zero */
2721                 av_freep(&ost->st->codec->subtitle_header);
2722                 av_free(ost->pict_tmp.data[0]);
2723                 av_free(ost->forced_kf_pts);
2724                 if (ost->video_resample)
2725                     sws_freeContext(ost->img_resample_ctx);
2726                 if (ost->resample)
2727                     audio_resample_close(ost->resample);
2728                 if (ost->reformat_ctx)
2729                     av_audio_convert_free(ost->reformat_ctx);
2730                 av_free(ost);
2731             }
2732         }
2733         av_free(ost_table);
2734     }
2735     return ret;
2736 }
2737
2738 static void opt_format(const char *arg)
2739 {
2740     last_asked_format = arg;
2741 }
2742
2743 static void opt_video_rc_override_string(const char *arg)
2744 {
2745     video_rc_override_string = arg;
2746 }
2747
2748 static int opt_me_threshold(const char *opt, const char *arg)
2749 {
2750     me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2751     return 0;
2752 }
2753
2754 static int opt_verbose(const char *opt, const char *arg)
2755 {
2756     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2757     return 0;
2758 }
2759
2760 static int opt_frame_rate(const char *opt, const char *arg)
2761 {
2762     if (av_parse_video_rate(&frame_rate, arg) < 0) {
2763         fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2764         ffmpeg_exit(1);
2765     }
2766     return 0;
2767 }
2768
2769 static int opt_bitrate(const char *opt, const char *arg)
2770 {
2771     int codec_type = opt[0]=='a' ? AVMEDIA_TYPE_AUDIO : AVMEDIA_TYPE_VIDEO;
2772
2773     opt_default(opt, arg);
2774
2775     if (av_get_int(avcodec_opts[codec_type], "b", NULL) < 1000)
2776         fprintf(stderr, "WARNING: The bitrate parameter is set too low. It takes bits/s as argument, not kbits/s\n");
2777
2778     return 0;
2779 }
2780
2781 static int opt_frame_crop(const char *opt, const char *arg)
2782 {
2783     fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
2784     return AVERROR(EINVAL);
2785 }
2786
2787 static void opt_frame_size(const char *arg)
2788 {
2789     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2790         fprintf(stderr, "Incorrect frame size\n");
2791         ffmpeg_exit(1);
2792     }
2793 }
2794
2795 static int opt_pad(const char *opt, const char *arg) {
2796     fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2797     return -1;
2798 }
2799
2800 static void opt_frame_pix_fmt(const char *arg)
2801 {
2802     if (strcmp(arg, "list")) {
2803         frame_pix_fmt = av_get_pix_fmt(arg);
2804         if (frame_pix_fmt == PIX_FMT_NONE) {
2805             fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2806             ffmpeg_exit(1);
2807         }
2808     } else {
2809         show_pix_fmts();
2810         ffmpeg_exit(0);
2811     }
2812 }
2813
2814 static void opt_frame_aspect_ratio(const char *arg)
2815 {
2816     int x = 0, y = 0;
2817     double ar = 0;
2818     const char *p;
2819     char *end;
2820
2821     p = strchr(arg, ':');
2822     if (p) {
2823         x = strtol(arg, &end, 10);
2824         if (end == p)
2825             y = strtol(end+1, &end, 10);
2826         if (x > 0 && y > 0)
2827             ar = (double)x / (double)y;
2828     } else
2829         ar = strtod(arg, NULL);
2830
2831     if (!ar) {
2832         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2833         ffmpeg_exit(1);
2834     }
2835     frame_aspect_ratio = ar;
2836 }
2837
2838 static int opt_metadata(const char *opt, const char *arg)
2839 {
2840     char *mid= strchr(arg, '=');
2841
2842     if(!mid){
2843         fprintf(stderr, "Missing =\n");
2844         ffmpeg_exit(1);
2845     }
2846     *mid++= 0;
2847
2848     av_metadata_set2(&metadata, arg, mid, 0);
2849
2850     return 0;
2851 }
2852
2853 static void opt_qscale(const char *arg)
2854 {
2855     video_qscale = atof(arg);
2856     if (video_qscale <= 0 ||
2857         video_qscale > 255) {
2858         fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2859         ffmpeg_exit(1);
2860     }
2861 }
2862
2863 static void opt_top_field_first(const char *arg)
2864 {
2865     top_field_first= atoi(arg);
2866 }
2867
2868 static int opt_thread_count(const char *opt, const char *arg)
2869 {
2870     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2871 #if !HAVE_THREADS
2872     if (verbose >= 0)
2873         fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2874 #endif
2875     return 0;
2876 }
2877
2878 static void opt_audio_sample_fmt(const char *arg)
2879 {
2880     if (strcmp(arg, "list")) {
2881         audio_sample_fmt = av_get_sample_fmt(arg);
2882         if (audio_sample_fmt == AV_SAMPLE_FMT_NONE) {
2883             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg);
2884             ffmpeg_exit(1);
2885         }
2886     } else {
2887         list_fmts(av_get_sample_fmt_string, AV_SAMPLE_FMT_NB);
2888         ffmpeg_exit(0);
2889     }
2890 }
2891
2892 static int opt_audio_rate(const char *opt, const char *arg)
2893 {
2894     audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2895     return 0;
2896 }
2897
2898 static int opt_audio_channels(const char *opt, const char *arg)
2899 {
2900     audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2901     return 0;
2902 }
2903
2904 static void opt_video_channel(const char *arg)
2905 {
2906     video_channel = strtol(arg, NULL, 0);
2907 }
2908
2909 static void opt_video_standard(const char *arg)
2910 {
2911     video_standard = av_strdup(arg);
2912 }
2913
2914 static void opt_codec(int *pstream_copy, char **pcodec_name,
2915                       int codec_type, const char *arg)
2916 {
2917     av_freep(pcodec_name);
2918     if (!strcmp(arg, "copy")) {
2919         *pstream_copy = 1;
2920     } else {
2921         *pcodec_name = av_strdup(arg);
2922     }
2923 }
2924
2925 static void opt_audio_codec(const char *arg)
2926 {
2927     opt_codec(&audio_stream_copy, &audio_codec_name, AVMEDIA_TYPE_AUDIO, arg);
2928 }
2929
2930 static void opt_video_codec(const char *arg)
2931 {
2932     opt_codec(&video_stream_copy, &video_codec_name, AVMEDIA_TYPE_VIDEO, arg);
2933 }
2934
2935 static void opt_subtitle_codec(const char *arg)
2936 {
2937     opt_codec(&subtitle_stream_copy, &subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, arg);
2938 }
2939
2940 static int opt_codec_tag(const char *opt, const char *arg)
2941 {
2942     char *tail;
2943     uint32_t *codec_tag;
2944
2945     codec_tag = !strcmp(opt, "atag") ? &audio_codec_tag :
2946                 !strcmp(opt, "vtag") ? &video_codec_tag :
2947                 !strcmp(opt, "stag") ? &subtitle_codec_tag : NULL;
2948     if (!codec_tag)
2949         return -1;
2950
2951     *codec_tag = strtol(arg, &tail, 0);
2952     if (!tail || *tail)
2953         *codec_tag = AV_RL32(arg);
2954
2955     return 0;
2956 }
2957
2958 static void opt_map(const char *arg)
2959 {
2960     AVStreamMap *m;
2961     char *p;
2962
2963     stream_maps = grow_array(stream_maps, sizeof(*stream_maps), &nb_stream_maps, nb_stream_maps + 1);
2964     m = &stream_maps[nb_stream_maps-1];
2965
2966     m->file_index = strtol(arg, &p, 0);
2967     if (*p)
2968         p++;
2969
2970     m->stream_index = strtol(p, &p, 0);
2971     if (*p) {
2972         p++;
2973         m->sync_file_index = strtol(p, &p, 0);
2974         if (*p)
2975             p++;
2976         m->sync_stream_index = strtol(p, &p, 0);
2977     } else {
2978         m->sync_file_index = m->file_index;
2979         m->sync_stream_index = m->stream_index;
2980     }
2981 }
2982
2983 static void parse_meta_type(char *arg, char *type, int *index, char **endptr)
2984 {
2985     *endptr = arg;
2986     if (*arg == ',') {
2987         *type = *(++arg);
2988         switch (*arg) {
2989         case 'g':
2990             break;
2991         case 's':
2992         case 'c':
2993         case 'p':
2994             *index = strtol(++arg, endptr, 0);
2995             break;
2996         default:
2997             fprintf(stderr, "Invalid metadata type %c.\n", *arg);
2998             ffmpeg_exit(1);
2999         }
3000     } else
3001         *type = 'g';
3002 }
3003
3004 static void opt_map_meta_data(const char *arg)
3005 {
3006     AVMetaDataMap *m, *m1;
3007     char *p;
3008
3009     meta_data_maps = grow_array(meta_data_maps, sizeof(*meta_data_maps),
3010                                 &nb_meta_data_maps, nb_meta_data_maps + 1);
3011
3012     m = &meta_data_maps[nb_meta_data_maps - 1][0];
3013     m->file = strtol(arg, &p, 0);
3014     parse_meta_type(p, &m->type, &m->index, &p);
3015     if (*p)
3016         p++;
3017
3018     m1 = &meta_data_maps[nb_meta_data_maps - 1][1];
3019     m1->file = strtol(p, &p, 0);
3020     parse_meta_type(p, &m1->type, &m1->index, &p);
3021
3022     if (m->type == 'g' || m1->type == 'g')
3023         metadata_global_autocopy = 0;
3024     if (m->type == 's' || m1->type == 's')
3025         metadata_streams_autocopy = 0;
3026     if (m->type == 'c' || m1->type == 'c')
3027         metadata_chapters_autocopy = 0;
3028 }
3029
3030 static void opt_map_chapters(const char *arg)
3031 {
3032     AVChapterMap *c;
3033     char *p;
3034
3035     chapter_maps = grow_array(chapter_maps, sizeof(*chapter_maps), &nb_chapter_maps,
3036                               nb_chapter_maps + 1);
3037     c = &chapter_maps[nb_chapter_maps - 1];
3038     c->out_file = strtol(arg, &p, 0);
3039     if (*p)
3040         p++;
3041
3042     c->in_file = strtol(p, &p, 0);
3043 }
3044
3045 static void opt_input_ts_scale(const char *arg)
3046 {
3047     unsigned int stream;
3048     double scale;
3049     char *p;
3050
3051     stream = strtol(arg, &p, 0);
3052     if (*p)
3053         p++;
3054     scale= strtod(p, &p);
3055
3056     if(stream >= MAX_STREAMS)
3057         ffmpeg_exit(1);
3058
3059     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);
3060     input_files_ts_scale[nb_input_files][stream]= scale;
3061 }
3062
3063 static int opt_recording_time(const char *opt, const char *arg)
3064 {
3065     recording_time = parse_time_or_die(opt, arg, 1);
3066     return 0;
3067 }
3068
3069 static int opt_start_time(const char *opt, const char *arg)
3070 {
3071     start_time = parse_time_or_die(opt, arg, 1);
3072     return 0;
3073 }
3074
3075 static int opt_recording_timestamp(const char *opt, const char *arg)
3076 {
3077     recording_timestamp = parse_time_or_die(opt, arg, 0) / 1000000;
3078     return 0;
3079 }
3080
3081 static int opt_input_ts_offset(const char *opt, const char *arg)
3082 {
3083     input_ts_offset = parse_time_or_die(opt, arg, 1);
3084     return 0;
3085 }
3086
3087 static enum CodecID find_codec_or_die(const char *name, int type, int encoder, int strict)
3088 {
3089     const char *codec_string = encoder ? "encoder" : "decoder";
3090     AVCodec *codec;
3091
3092     if(!name)
3093         return CODEC_ID_NONE;
3094     codec = encoder ?
3095         avcodec_find_encoder_by_name(name) :
3096         avcodec_find_decoder_by_name(name);
3097     if(!codec) {
3098         fprintf(stderr, "Unknown %s '%s'\n", codec_string, name);
3099         ffmpeg_exit(1);
3100     }
3101     if(codec->type != type) {
3102         fprintf(stderr, "Invalid %s type '%s'\n", codec_string, name);
3103         ffmpeg_exit(1);
3104     }
3105     if(codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
3106        strict > FF_COMPLIANCE_EXPERIMENTAL) {
3107         fprintf(stderr, "%s '%s' is experimental and might produce bad "
3108                 "results.\nAdd '-strict experimental' if you want to use it.\n",
3109                 codec_string, codec->name);
3110         codec = encoder ?
3111             avcodec_find_encoder(codec->id) :
3112             avcodec_find_decoder(codec->id);
3113         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
3114             fprintf(stderr, "Or use the non experimental %s '%s'.\n",
3115                     codec_string, codec->name);
3116         ffmpeg_exit(1);
3117     }
3118     return codec->id;
3119 }
3120
3121 static void opt_input_file(const char *filename)
3122 {
3123     AVFormatContext *ic;
3124     AVFormatParameters params, *ap = &params;
3125     AVInputFormat *file_iformat = NULL;
3126     int err, i, ret, rfps, rfps_base;
3127     int64_t timestamp;
3128
3129     if (last_asked_format) {
3130         if (!(file_iformat = av_find_input_format(last_asked_format))) {
3131             fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
3132             ffmpeg_exit(1);
3133         }
3134         last_asked_format = NULL;
3135     }
3136
3137     if (!strcmp(filename, "-"))
3138         filename = "pipe:";
3139
3140     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3141                     !strcmp(filename, "/dev/stdin");
3142
3143     /* get default parameters from command line */
3144     ic = avformat_alloc_context();
3145     if (!ic) {
3146         print_error(filename, AVERROR(ENOMEM));
3147         ffmpeg_exit(1);
3148     }
3149
3150     memset(ap, 0, sizeof(*ap));
3151     ap->prealloced_context = 1;
3152     ap->sample_rate = audio_sample_rate;
3153     ap->channels = audio_channels;
3154     ap->time_base.den = frame_rate.num;
3155     ap->time_base.num = frame_rate.den;
3156     ap->width = frame_width;
3157     ap->height = frame_height;
3158     ap->pix_fmt = frame_pix_fmt;
3159    // ap->sample_fmt = audio_sample_fmt; //FIXME:not implemented in libavformat
3160     ap->channel = video_channel;
3161     ap->standard = video_standard;
3162
3163     set_context_opts(ic, avformat_opts, AV_OPT_FLAG_DECODING_PARAM, NULL);
3164
3165     ic->video_codec_id   =
3166         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0,
3167                           avcodec_opts[AVMEDIA_TYPE_VIDEO   ]->strict_std_compliance);
3168     ic->audio_codec_id   =
3169         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0,
3170                           avcodec_opts[AVMEDIA_TYPE_AUDIO   ]->strict_std_compliance);
3171     ic->subtitle_codec_id=
3172         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0,
3173                           avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->strict_std_compliance);
3174     ic->flags |= AVFMT_FLAG_NONBLOCK;
3175
3176     /* open the input file with generic libav function */
3177     err = av_open_input_file(&ic, filename, file_iformat, 0, ap);
3178     if (err < 0) {
3179         print_error(filename, err);
3180         ffmpeg_exit(1);
3181     }
3182     if(opt_programid) {
3183         int i, j;
3184         int found=0;
3185         for(i=0; i<ic->nb_streams; i++){
3186             ic->streams[i]->discard= AVDISCARD_ALL;
3187         }
3188         for(i=0; i<ic->nb_programs; i++){
3189             AVProgram *p= ic->programs[i];
3190             if(p->id != opt_programid){
3191                 p->discard = AVDISCARD_ALL;
3192             }else{
3193                 found=1;
3194                 for(j=0; j<p->nb_stream_indexes; j++){
3195                     ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
3196                 }
3197             }
3198         }
3199         if(!found){
3200             fprintf(stderr, "Specified program id not found\n");
3201             ffmpeg_exit(1);
3202         }
3203         opt_programid=0;
3204     }
3205
3206     ic->loop_input = loop_input;
3207
3208     /* If not enough info to get the stream parameters, we decode the
3209        first frames to get it. (used in mpeg case for example) */
3210     ret = av_find_stream_info(ic);
3211     if (ret < 0 && verbose >= 0) {
3212         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3213         av_close_input_file(ic);
3214         ffmpeg_exit(1);
3215     }
3216
3217     timestamp = start_time;
3218     /* add the stream start time */
3219     if (ic->start_time != AV_NOPTS_VALUE)
3220         timestamp += ic->start_time;
3221
3222     /* if seeking requested, we execute it */
3223     if (start_time != 0) {
3224         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3225         if (ret < 0) {
3226             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3227                     filename, (double)timestamp / AV_TIME_BASE);
3228         }
3229         /* reset seek info */
3230         start_time = 0;
3231     }
3232
3233     /* update the current parameters so that they match the one of the input stream */
3234     for(i=0;i<ic->nb_streams;i++) {
3235         AVStream *st = ic->streams[i];
3236         AVCodecContext *dec = st->codec;
3237         avcodec_thread_init(dec, thread_count);
3238         input_codecs = grow_array(input_codecs, sizeof(*input_codecs), &nb_input_codecs, nb_input_codecs + 1);
3239         switch (dec->codec_type) {
3240         case AVMEDIA_TYPE_AUDIO:
3241             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(audio_codec_name);
3242             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]);
3243             //fprintf(stderr, "\nInput Audio channels: %d", dec->channels);
3244             channel_layout    = dec->channel_layout;
3245             audio_channels    = dec->channels;
3246             audio_sample_rate = dec->sample_rate;
3247             audio_sample_fmt  = dec->sample_fmt;
3248             if(audio_disable)
3249                 st->discard= AVDISCARD_ALL;
3250             /* Note that av_find_stream_info can add more streams, and we
3251              * currently have no chance of setting up lowres decoding
3252              * early enough for them. */
3253             if (dec->lowres)
3254                 audio_sample_rate >>= dec->lowres;
3255             break;
3256         case AVMEDIA_TYPE_VIDEO:
3257             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(video_codec_name);
3258             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]);
3259             frame_height = dec->height;
3260             frame_width  = dec->width;
3261             if(ic->streams[i]->sample_aspect_ratio.num)
3262                 frame_aspect_ratio=av_q2d(ic->streams[i]->sample_aspect_ratio);
3263             else
3264                 frame_aspect_ratio=av_q2d(dec->sample_aspect_ratio);
3265             frame_aspect_ratio *= (float) dec->width / dec->height;
3266             frame_pix_fmt = dec->pix_fmt;
3267             rfps      = ic->streams[i]->r_frame_rate.num;
3268             rfps_base = ic->streams[i]->r_frame_rate.den;
3269             if (dec->lowres) {
3270                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3271                 frame_height >>= dec->lowres;
3272                 frame_width  >>= dec->lowres;
3273                 dec->height = frame_height;
3274                 dec->width  = frame_width;
3275             }
3276             if(me_threshold)
3277                 dec->debug |= FF_DEBUG_MV;
3278
3279             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3280
3281                 if (verbose >= 0)
3282                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3283                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3284
3285                     (float)rfps / rfps_base, rfps, rfps_base);
3286             }
3287             /* update the current frame rate to match the stream frame rate */
3288             frame_rate.num = rfps;
3289             frame_rate.den = rfps_base;
3290
3291             if(video_disable)
3292                 st->discard= AVDISCARD_ALL;
3293             else if(video_discard)
3294                 st->discard= video_discard;
3295             break;
3296         case AVMEDIA_TYPE_DATA:
3297             break;
3298         case AVMEDIA_TYPE_SUBTITLE:
3299             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(subtitle_codec_name);
3300             if(subtitle_disable)
3301                 st->discard = AVDISCARD_ALL;
3302             break;
3303         case AVMEDIA_TYPE_ATTACHMENT:
3304         case AVMEDIA_TYPE_UNKNOWN:
3305             break;
3306         default:
3307             abort();
3308         }
3309     }
3310
3311     input_files[nb_input_files] = ic;
3312     input_files_ts_offset[nb_input_files] = input_ts_offset - (copy_ts ? 0 : timestamp);
3313     /* dump the file content */
3314     if (verbose >= 0)
3315         dump_format(ic, nb_input_files, filename, 0);
3316
3317     nb_input_files++;
3318
3319     video_channel = 0;
3320
3321     av_freep(&video_codec_name);
3322     av_freep(&audio_codec_name);
3323     av_freep(&subtitle_codec_name);
3324 }
3325
3326 static void check_audio_video_sub_inputs(int *has_video_ptr, int *has_audio_ptr,
3327                                          int *has_subtitle_ptr)
3328 {
3329     int has_video, has_audio, has_subtitle, i, j;
3330     AVFormatContext *ic;
3331
3332     has_video = 0;
3333     has_audio = 0;
3334     has_subtitle = 0;
3335     for(j=0;j<nb_input_files;j++) {
3336         ic = input_files[j];
3337         for(i=0;i<ic->nb_streams;i++) {
3338             AVCodecContext *enc = ic->streams[i]->codec;
3339             switch(enc->codec_type) {
3340             case AVMEDIA_TYPE_AUDIO:
3341                 has_audio = 1;
3342                 break;
3343             case AVMEDIA_TYPE_VIDEO:
3344                 has_video = 1;
3345                 break;
3346             case AVMEDIA_TYPE_SUBTITLE:
3347                 has_subtitle = 1;
3348                 break;
3349             case AVMEDIA_TYPE_DATA:
3350             case AVMEDIA_TYPE_ATTACHMENT:
3351             case AVMEDIA_TYPE_UNKNOWN:
3352                 break;
3353             default:
3354                 abort();
3355             }
3356         }
3357     }
3358     *has_video_ptr = has_video;
3359     *has_audio_ptr = has_audio;
3360     *has_subtitle_ptr = has_subtitle;
3361 }
3362
3363 static void new_video_stream(AVFormatContext *oc, int file_idx)
3364 {
3365     AVStream *st;
3366     AVOutputStream *ost;
3367     AVCodecContext *video_enc;
3368     enum CodecID codec_id = CODEC_ID_NONE;
3369     AVCodec *codec= NULL;
3370
3371     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3372     if (!st) {
3373         fprintf(stderr, "Could not alloc stream\n");
3374         ffmpeg_exit(1);
3375     }
3376     ost = new_output_stream(oc, file_idx);
3377
3378     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3379     if(!video_stream_copy){
3380         if (video_codec_name) {
3381             codec_id = find_codec_or_die(video_codec_name, AVMEDIA_TYPE_VIDEO, 1,
3382                                          avcodec_opts[AVMEDIA_TYPE_VIDEO]->strict_std_compliance);
3383             codec = avcodec_find_encoder_by_name(video_codec_name);
3384             output_codecs[nb_output_codecs-1] = codec;
3385         } else {
3386             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_VIDEO);
3387             codec = avcodec_find_encoder(codec_id);
3388         }
3389     }
3390
3391     avcodec_get_context_defaults3(st->codec, codec);
3392     ost->bitstream_filters = video_bitstream_filters;
3393     video_bitstream_filters= NULL;
3394
3395     avcodec_thread_init(st->codec, thread_count);
3396
3397     video_enc = st->codec;
3398
3399     if(video_codec_tag)
3400         video_enc->codec_tag= video_codec_tag;
3401
3402     if(   (video_global_header&1)
3403        || (video_global_header==0 && (oc->oformat->flags & AVFMT_GLOBALHEADER))){
3404         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3405         avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3406     }
3407     if(video_global_header&2){
3408         video_enc->flags2 |= CODEC_FLAG2_LOCAL_HEADER;
3409         avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags2|= CODEC_FLAG2_LOCAL_HEADER;
3410     }
3411
3412     if (video_stream_copy) {
3413         st->stream_copy = 1;
3414         video_enc->codec_type = AVMEDIA_TYPE_VIDEO;
3415         video_enc->sample_aspect_ratio =
3416         st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3417     } else {
3418         const char *p;
3419         int i;
3420         AVRational fps= frame_rate.num ? frame_rate : (AVRational){25,1};
3421
3422         video_enc->codec_id = codec_id;
3423         set_context_opts(video_enc, avcodec_opts[AVMEDIA_TYPE_VIDEO], AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3424
3425         if (codec && codec->supported_framerates && !force_fps)
3426             fps = codec->supported_framerates[av_find_nearest_q_idx(fps, codec->supported_framerates)];
3427         video_enc->time_base.den = fps.num;
3428         video_enc->time_base.num = fps.den;
3429
3430         video_enc->width = frame_width;
3431         video_enc->height = frame_height;
3432         video_enc->sample_aspect_ratio = av_d2q(frame_aspect_ratio*video_enc->height/video_enc->width, 255);
3433         video_enc->pix_fmt = frame_pix_fmt;
3434         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3435
3436         choose_pixel_fmt(st, codec);
3437
3438         if (intra_only)
3439             video_enc->gop_size = 0;
3440         if (video_qscale || same_quality) {
3441             video_enc->flags |= CODEC_FLAG_QSCALE;
3442             video_enc->global_quality=
3443                 st->quality = FF_QP2LAMBDA * video_qscale;
3444         }
3445
3446         if(intra_matrix)
3447             video_enc->intra_matrix = intra_matrix;
3448         if(inter_matrix)
3449             video_enc->inter_matrix = inter_matrix;
3450
3451         p= video_rc_override_string;
3452         for(i=0; p; i++){
3453             int start, end, q;
3454             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3455             if(e!=3){
3456                 fprintf(stderr, "error parsing rc_override\n");
3457                 ffmpeg_exit(1);
3458             }
3459             video_enc->rc_override=
3460                 av_realloc(video_enc->rc_override,
3461                            sizeof(RcOverride)*(i+1));
3462             video_enc->rc_override[i].start_frame= start;
3463             video_enc->rc_override[i].end_frame  = end;
3464             if(q>0){
3465                 video_enc->rc_override[i].qscale= q;
3466                 video_enc->rc_override[i].quality_factor= 1.0;
3467             }
3468             else{
3469                 video_enc->rc_override[i].qscale= 0;
3470                 video_enc->rc_override[i].quality_factor= -q/100.0;
3471             }
3472             p= strchr(p, '/');
3473             if(p) p++;
3474         }
3475         video_enc->rc_override_count=i;
3476         if (!video_enc->rc_initial_buffer_occupancy)
3477             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3478         video_enc->me_threshold= me_threshold;
3479         video_enc->intra_dc_precision= intra_dc_precision - 8;
3480
3481         if (do_psnr)
3482             video_enc->flags|= CODEC_FLAG_PSNR;
3483
3484         /* two pass mode */
3485         if (do_pass) {
3486             if (do_pass == 1) {
3487                 video_enc->flags |= CODEC_FLAG_PASS1;
3488             } else {
3489                 video_enc->flags |= CODEC_FLAG_PASS2;
3490             }
3491         }
3492
3493         if (forced_key_frames)
3494             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3495     }
3496     if (video_language) {
3497         av_metadata_set2(&st->metadata, "language", video_language, 0);
3498         av_freep(&video_language);
3499     }
3500
3501     /* reset some key parameters */
3502     video_disable = 0;
3503     av_freep(&video_codec_name);
3504     av_freep(&forced_key_frames);
3505     video_stream_copy = 0;
3506     frame_pix_fmt = PIX_FMT_NONE;
3507 }
3508
3509 static void new_audio_stream(AVFormatContext *oc, int file_idx)
3510 {
3511     AVStream *st;
3512     AVOutputStream *ost;
3513     AVCodec *codec= NULL;
3514     AVCodecContext *audio_enc;
3515     enum CodecID codec_id = CODEC_ID_NONE;
3516
3517     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3518     if (!st) {
3519         fprintf(stderr, "Could not alloc stream\n");
3520         ffmpeg_exit(1);
3521     }
3522     ost = new_output_stream(oc, file_idx);
3523
3524     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3525     if(!audio_stream_copy){
3526         if (audio_codec_name) {
3527             codec_id = find_codec_or_die(audio_codec_name, AVMEDIA_TYPE_AUDIO, 1,
3528                                          avcodec_opts[AVMEDIA_TYPE_AUDIO]->strict_std_compliance);
3529             codec = avcodec_find_encoder_by_name(audio_codec_name);
3530             output_codecs[nb_output_codecs-1] = codec;
3531         } else {
3532             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_AUDIO);
3533             codec = avcodec_find_encoder(codec_id);
3534         }
3535     }
3536
3537     avcodec_get_context_defaults3(st->codec, codec);
3538
3539     ost->bitstream_filters = audio_bitstream_filters;
3540     audio_bitstream_filters= NULL;
3541
3542     avcodec_thread_init(st->codec, thread_count);
3543
3544     audio_enc = st->codec;
3545     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3546
3547     if(audio_codec_tag)
3548         audio_enc->codec_tag= audio_codec_tag;
3549
3550     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3551         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3552         avcodec_opts[AVMEDIA_TYPE_AUDIO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3553     }
3554     if (audio_stream_copy) {
3555         st->stream_copy = 1;
3556         audio_enc->channels = audio_channels;
3557         audio_enc->sample_rate = audio_sample_rate;
3558     } else {
3559         audio_enc->codec_id = codec_id;
3560         set_context_opts(audio_enc, avcodec_opts[AVMEDIA_TYPE_AUDIO], AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3561
3562         if (audio_qscale > QSCALE_NONE) {
3563             audio_enc->flags |= CODEC_FLAG_QSCALE;
3564             audio_enc->global_quality = st->quality = FF_QP2LAMBDA * audio_qscale;
3565         }
3566         audio_enc->channels = audio_channels;
3567         audio_enc->sample_fmt = audio_sample_fmt;
3568         audio_enc->sample_rate = audio_sample_rate;
3569         audio_enc->channel_layout = channel_layout;
3570         if (av_get_channel_layout_nb_channels(channel_layout) != audio_channels)
3571             audio_enc->channel_layout = 0;
3572         choose_sample_fmt(st, codec);
3573         choose_sample_rate(st, codec);
3574     }
3575     audio_enc->time_base= (AVRational){1, audio_sample_rate};
3576     if (audio_language) {
3577         av_metadata_set2(&st->metadata, "language", audio_language, 0);
3578         av_freep(&audio_language);
3579     }
3580
3581     /* reset some key parameters */
3582     audio_disable = 0;
3583     av_freep(&audio_codec_name);
3584     audio_stream_copy = 0;
3585 }
3586
3587 static void new_subtitle_stream(AVFormatContext *oc, int file_idx)
3588 {
3589     AVStream *st;
3590     AVOutputStream *ost;
3591     AVCodec *codec=NULL;
3592     AVCodecContext *subtitle_enc;
3593     enum CodecID codec_id = CODEC_ID_NONE;
3594
3595     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3596     if (!st) {
3597         fprintf(stderr, "Could not alloc stream\n");
3598         ffmpeg_exit(1);
3599     }
3600     ost = new_output_stream(oc, file_idx);
3601     subtitle_enc = st->codec;
3602     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3603     if(!subtitle_stream_copy){
3604         if (subtitle_codec_name) {
3605             codec_id = find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 1,
3606                                          avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->strict_std_compliance);
3607             codec= output_codecs[nb_output_codecs-1] = avcodec_find_encoder_by_name(subtitle_codec_name);
3608         } else {
3609             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_SUBTITLE);
3610             codec = avcodec_find_encoder(codec_id);
3611         }
3612     }
3613     avcodec_get_context_defaults3(st->codec, codec);
3614
3615     ost->bitstream_filters = subtitle_bitstream_filters;
3616     subtitle_bitstream_filters= NULL;
3617
3618     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3619
3620     if(subtitle_codec_tag)
3621         subtitle_enc->codec_tag= subtitle_codec_tag;
3622
3623     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3624         subtitle_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3625         avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->flags |= CODEC_FLAG_GLOBAL_HEADER;
3626     }
3627     if (subtitle_stream_copy) {
3628         st->stream_copy = 1;
3629     } else {
3630         subtitle_enc->codec_id = codec_id;
3631         set_context_opts(avcodec_opts[AVMEDIA_TYPE_SUBTITLE], subtitle_enc, AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3632     }
3633
3634     if (subtitle_language) {
3635         av_metadata_set2(&st->metadata, "language", subtitle_language, 0);
3636         av_freep(&subtitle_language);
3637     }
3638
3639     subtitle_disable = 0;
3640     av_freep(&subtitle_codec_name);
3641     subtitle_stream_copy = 0;
3642 }
3643
3644 static int opt_new_stream(const char *opt, const char *arg)
3645 {
3646     AVFormatContext *oc;
3647     int file_idx = nb_output_files - 1;
3648     if (nb_output_files <= 0) {
3649         fprintf(stderr, "At least one output file must be specified\n");
3650         ffmpeg_exit(1);
3651     }
3652     oc = output_files[file_idx];
3653
3654     if      (!strcmp(opt, "newvideo"   )) new_video_stream   (oc, file_idx);
3655     else if (!strcmp(opt, "newaudio"   )) new_audio_stream   (oc, file_idx);
3656     else if (!strcmp(opt, "newsubtitle")) new_subtitle_stream(oc, file_idx);
3657     else av_assert0(0);
3658     return 0;
3659 }
3660
3661 /* arg format is "output-stream-index:streamid-value". */
3662 static int opt_streamid(const char *opt, const char *arg)
3663 {
3664     int idx;
3665     char *p;
3666     char idx_str[16];
3667
3668     strncpy(idx_str, arg, sizeof(idx_str));
3669     idx_str[sizeof(idx_str)-1] = '\0';
3670     p = strchr(idx_str, ':');
3671     if (!p) {
3672         fprintf(stderr,
3673                 "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3674      &nbs