vc1: fix decoding when end sequence is present
[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 "libavutil/audioconvert.h"
40 #include "libavutil/parseutils.h"
41 #include "libavutil/samplefmt.h"
42 #include "libavutil/colorspace.h"
43 #include "libavutil/fifo.h"
44 #include "libavutil/intreadwrite.h"
45 #include "libavutil/pixdesc.h"
46 #include "libavutil/avstring.h"
47 #include "libavutil/libm.h"
48 #include "libavformat/os_support.h"
49
50 #if CONFIG_AVFILTER
51 # include "libavfilter/avfilter.h"
52 # include "libavfilter/avfiltergraph.h"
53 # include "libavfilter/vsrc_buffer.h"
54 #endif
55
56 #if HAVE_SYS_RESOURCE_H
57 #include <sys/types.h>
58 #include <sys/time.h>
59 #include <sys/resource.h>
60 #elif HAVE_GETPROCESSTIMES
61 #include <windows.h>
62 #endif
63 #if HAVE_GETPROCESSMEMORYINFO
64 #include <windows.h>
65 #include <psapi.h>
66 #endif
67
68 #if HAVE_SYS_SELECT_H
69 #include <sys/select.h>
70 #endif
71
72 #if HAVE_TERMIOS_H
73 #include <fcntl.h>
74 #include <sys/ioctl.h>
75 #include <sys/time.h>
76 #include <termios.h>
77 #elif HAVE_CONIO_H
78 #include <conio.h>
79 #endif
80 #include <time.h>
81
82 #include "cmdutils.h"
83
84 #include "libavutil/avassert.h"
85
86 const char program_name[] = "FFmpeg";
87 const int program_birth_year = 2000;
88
89 /* select an input stream for an output stream */
90 typedef struct AVStreamMap {
91     int file_index;
92     int stream_index;
93     int sync_file_index;
94     int sync_stream_index;
95 } AVStreamMap;
96
97 /**
98  * select an input file for an output file
99  */
100 typedef struct AVMetaDataMap {
101     int  file;      //< file index
102     char type;      //< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
103     int  index;     //< stream/chapter/program number
104 } AVMetaDataMap;
105
106 typedef struct AVChapterMap {
107     int in_file;
108     int out_file;
109 } AVChapterMap;
110
111 static const OptionDef options[];
112
113 #define MAX_FILES 100
114 #if !FF_API_MAX_STREAMS
115 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
116 #endif
117
118 static const char *last_asked_format = NULL;
119 static AVFormatContext *input_files[MAX_FILES];
120 static int64_t input_files_ts_offset[MAX_FILES];
121 static double *input_files_ts_scale[MAX_FILES] = {NULL};
122 static AVCodec **input_codecs = NULL;
123 static int nb_input_files = 0;
124 static int nb_input_codecs = 0;
125 static int nb_input_files_ts_scale[MAX_FILES] = {0};
126
127 static AVFormatContext *output_files[MAX_FILES];
128 static AVCodec **output_codecs = NULL;
129 static int nb_output_files = 0;
130 static int nb_output_codecs = 0;
131
132 static AVStreamMap *stream_maps = NULL;
133 static int nb_stream_maps;
134
135 /* first item specifies output metadata, second is input */
136 static AVMetaDataMap (*meta_data_maps)[2] = NULL;
137 static int nb_meta_data_maps;
138 static int metadata_global_autocopy   = 1;
139 static int metadata_streams_autocopy  = 1;
140 static int metadata_chapters_autocopy = 1;
141
142 static AVChapterMap *chapter_maps = NULL;
143 static int nb_chapter_maps;
144
145 /* indexed by output file stream index */
146 static int *streamid_map = NULL;
147 static int nb_streamid_map = 0;
148
149 static int frame_width  = 0;
150 static int frame_height = 0;
151 static float frame_aspect_ratio = 0;
152 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
153 static enum AVSampleFormat audio_sample_fmt = AV_SAMPLE_FMT_NONE;
154 static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
155 static AVRational frame_rate;
156 static float video_qscale = 0;
157 static uint16_t *intra_matrix = NULL;
158 static uint16_t *inter_matrix = NULL;
159 static const char *video_rc_override_string=NULL;
160 static int video_disable = 0;
161 static int video_discard = 0;
162 static char *video_codec_name = NULL;
163 static unsigned int video_codec_tag = 0;
164 static char *video_language = NULL;
165 static int same_quality = 0;
166 static int do_deinterlace = 0;
167 static int top_field_first = -1;
168 static int me_threshold = 0;
169 static int intra_dc_precision = 8;
170 static int loop_input = 0;
171 static int loop_output = AVFMT_NOOUTPUTLOOP;
172 static int qp_hist = 0;
173 #if CONFIG_AVFILTER
174 static char *vfilters = NULL;
175 static AVFilterGraph *graph = NULL;
176 #endif
177
178 static int intra_only = 0;
179 static int audio_sample_rate = 44100;
180 static int64_t channel_layout = 0;
181 #define QSCALE_NONE -99999
182 static float audio_qscale = QSCALE_NONE;
183 static int audio_disable = 0;
184 static int audio_channels = 1;
185 static char  *audio_codec_name = NULL;
186 static unsigned int audio_codec_tag = 0;
187 static char *audio_language = NULL;
188
189 static int subtitle_disable = 0;
190 static char *subtitle_codec_name = NULL;
191 static char *subtitle_language = NULL;
192 static unsigned int subtitle_codec_tag = 0;
193
194 static float mux_preload= 0.5;
195 static float mux_max_delay= 0.7;
196
197 static int64_t recording_time = INT64_MAX;
198 static int64_t start_time = 0;
199 static int64_t recording_timestamp = 0;
200 static int64_t input_ts_offset = 0;
201 static int file_overwrite = 0;
202 static AVMetadata *metadata;
203 static int do_benchmark = 0;
204 static int do_hex_dump = 0;
205 static int do_pkt_dump = 0;
206 static int do_psnr = 0;
207 static int do_pass = 0;
208 static char *pass_logfilename_prefix = NULL;
209 static int audio_stream_copy = 0;
210 static int video_stream_copy = 0;
211 static int subtitle_stream_copy = 0;
212 static int video_sync_method= -1;
213 static int audio_sync_method= 0;
214 static float audio_drift_threshold= 0.1;
215 static int copy_ts= 0;
216 static int copy_tb;
217 static int opt_shortest = 0;
218 static int video_global_header = 0;
219 static char *vstats_filename;
220 static FILE *vstats_file;
221 static int opt_programid = 0;
222 static int copy_initial_nonkeyframes = 0;
223
224 static int rate_emu = 0;
225
226 static int  video_channel = 0;
227 static char *video_standard;
228
229 static int audio_volume = 256;
230
231 static int exit_on_error = 0;
232 static int using_stdin = 0;
233 static int verbose = 1;
234 static int thread_count= 1;
235 static int q_pressed = 0;
236 static int64_t video_size = 0;
237 static int64_t audio_size = 0;
238 static int64_t extra_size = 0;
239 static int nb_frames_dup = 0;
240 static int nb_frames_drop = 0;
241 static int input_sync;
242 static uint64_t limit_filesize = 0;
243 static int force_fps = 0;
244 static char *forced_key_frames = NULL;
245
246 static float dts_delta_threshold = 10;
247
248 static unsigned int sws_flags = SWS_BICUBIC;
249
250 static int64_t timer_start;
251
252 static uint8_t *audio_buf;
253 static uint8_t *audio_out;
254 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
255
256 static short *samples;
257
258 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
259 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
260 static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL;
261
262 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
263
264 struct AVInputStream;
265
266 typedef struct AVOutputStream {
267     int file_index;          /* file index */
268     int index;               /* stream index in the output file */
269     int source_index;        /* AVInputStream index */
270     AVStream *st;            /* stream in the output file */
271     int encoding_needed;     /* true if encoding needed for this stream */
272     int frame_number;
273     /* input pts and corresponding output pts
274        for A/V sync */
275     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
276     struct AVInputStream *sync_ist; /* input stream to sync against */
277     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
278     AVBitStreamFilterContext *bitstream_filters;
279     /* video only */
280     int video_resample;
281     AVFrame pict_tmp;      /* temporary image for resampling */
282     struct SwsContext *img_resample_ctx; /* for image resampling */
283     int resample_height;
284     int resample_width;
285     int resample_pix_fmt;
286
287     /* full frame size of first frame */
288     int original_height;
289     int original_width;
290
291     /* forced key frames */
292     int64_t *forced_kf_pts;
293     int forced_kf_count;
294     int forced_kf_index;
295
296     /* audio only */
297     int audio_resample;
298     ReSampleContext *resample; /* for audio resampling */
299     int resample_sample_fmt;
300     int resample_channels;
301     int resample_sample_rate;
302     int reformat_pair;
303     AVAudioConvert *reformat_ctx;
304     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
305     FILE *logfile;
306 } AVOutputStream;
307
308 static AVOutputStream **output_streams_for_file[MAX_FILES] = { NULL };
309 static int nb_output_streams_for_file[MAX_FILES] = { 0 };
310
311 typedef struct AVInputStream {
312     int file_index;
313     int index;
314     AVStream *st;
315     int discard;             /* true if stream data should be discarded */
316     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
317     int64_t sample_index;      /* current sample */
318
319     int64_t       start;     /* time when read started */
320     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
321                                 is not defined */
322     int64_t       pts;       /* current pts */
323     PtsCorrectionContext pts_ctx;
324     int is_start;            /* is 1 at the start and after a discontinuity */
325     int showed_multi_packet_warning;
326     int is_past_recording_time;
327 #if CONFIG_AVFILTER
328     AVFilterContext *output_video_filter;
329     AVFilterContext *input_video_filter;
330     AVFrame *filter_frame;
331     int has_filter_frame;
332     AVFilterBufferRef *picref;
333 #endif
334 } AVInputStream;
335
336 typedef struct AVInputFile {
337     int eof_reached;      /* true if eof reached */
338     int ist_index;        /* index of first stream in ist_table */
339     int buffer_size;      /* current total buffer size */
340     int nb_streams;       /* nb streams we are aware of */
341 } AVInputFile;
342
343 #if HAVE_TERMIOS_H
344
345 /* init terminal so that we can grab keys */
346 static struct termios oldtty;
347 #endif
348
349 #if CONFIG_AVFILTER
350
351 static int configure_filters(AVInputStream *ist, AVOutputStream *ost)
352 {
353     AVFilterContext *last_filter, *filter;
354     /** filter graph containing all filters including input & output */
355     AVCodecContext *codec = ost->st->codec;
356     AVCodecContext *icodec = ist->st->codec;
357     FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
358     char args[255];
359     int ret;
360
361     graph = avfilter_graph_alloc();
362
363     snprintf(args, 255, "%d:%d:%d:%d:%d", ist->st->codec->width,
364              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE);
365     ret = avfilter_graph_create_filter(&ist->input_video_filter, avfilter_get_by_name("buffer"),
366                                        "src", args, NULL, graph);
367     if (ret < 0)
368         return ret;
369     ret = avfilter_graph_create_filter(&ist->output_video_filter, &ffsink,
370                                        "out", NULL, &ffsink_ctx, graph);
371     if (ret < 0)
372         return ret;
373     last_filter = ist->input_video_filter;
374
375     if (codec->width  != icodec->width || codec->height != icodec->height) {
376         snprintf(args, 255, "%d:%d:flags=0x%X",
377                  codec->width,
378                  codec->height,
379                  (int)av_get_int(sws_opts, "sws_flags", NULL));
380         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
381                                                 NULL, args, NULL, graph)) < 0)
382             return ret;
383         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
384             return ret;
385         last_filter = filter;
386     }
387
388     snprintf(args, sizeof(args), "flags=0x%X", (int)av_get_int(sws_opts, "sws_flags", NULL));
389     graph->scale_sws_opts = av_strdup(args);
390
391     if (vfilters) {
392         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
393         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
394
395         outputs->name    = av_strdup("in");
396         outputs->filter_ctx = last_filter;
397         outputs->pad_idx = 0;
398         outputs->next    = NULL;
399
400         inputs->name    = av_strdup("out");
401         inputs->filter_ctx = ist->output_video_filter;
402         inputs->pad_idx = 0;
403         inputs->next    = NULL;
404
405         if ((ret = avfilter_graph_parse(graph, vfilters, inputs, outputs, NULL)) < 0)
406             return ret;
407         av_freep(&vfilters);
408     } else {
409         if ((ret = avfilter_link(last_filter, 0, ist->output_video_filter, 0)) < 0)
410             return ret;
411     }
412
413     if ((ret = avfilter_graph_config(graph, NULL)) < 0)
414         return ret;
415
416     codec->width  = ist->output_video_filter->inputs[0]->w;
417     codec->height = ist->output_video_filter->inputs[0]->h;
418
419     return 0;
420 }
421 #endif /* CONFIG_AVFILTER */
422
423 static void term_exit(void)
424 {
425     av_log(NULL, AV_LOG_QUIET, "");
426 #if HAVE_TERMIOS_H
427     tcsetattr (0, TCSANOW, &oldtty);
428 #endif
429 }
430
431 static volatile int received_sigterm = 0;
432
433 static void
434 sigterm_handler(int sig)
435 {
436     received_sigterm = sig;
437     term_exit();
438 }
439
440 static void term_init(void)
441 {
442 #if HAVE_TERMIOS_H
443     struct termios tty;
444
445     tcgetattr (0, &tty);
446     oldtty = tty;
447     atexit(term_exit);
448
449     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
450                           |INLCR|IGNCR|ICRNL|IXON);
451     tty.c_oflag |= OPOST;
452     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
453     tty.c_cflag &= ~(CSIZE|PARENB);
454     tty.c_cflag |= CS8;
455     tty.c_cc[VMIN] = 1;
456     tty.c_cc[VTIME] = 0;
457
458     tcsetattr (0, TCSANOW, &tty);
459     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
460 #endif
461
462     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
463     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
464 #ifdef SIGXCPU
465     signal(SIGXCPU, sigterm_handler);
466 #endif
467 }
468
469 /* read a key without blocking */
470 static int read_key(void)
471 {
472 #if HAVE_TERMIOS_H
473     int n = 1;
474     unsigned char ch;
475     struct timeval tv;
476     fd_set rfds;
477
478     FD_ZERO(&rfds);
479     FD_SET(0, &rfds);
480     tv.tv_sec = 0;
481     tv.tv_usec = 0;
482     n = select(1, &rfds, NULL, NULL, &tv);
483     if (n > 0) {
484         n = read(0, &ch, 1);
485         if (n == 1)
486             return ch;
487
488         return n;
489     }
490 #elif HAVE_CONIO_H
491     if(kbhit())
492         return(getch());
493 #endif
494     return -1;
495 }
496
497 static int decode_interrupt_cb(void)
498 {
499     return q_pressed || (q_pressed = read_key() == 'q');
500 }
501
502 static int ffmpeg_exit(int ret)
503 {
504     int i;
505
506     /* close files */
507     for(i=0;i<nb_output_files;i++) {
508         AVFormatContext *s = output_files[i];
509         int j;
510         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
511             avio_close(s->pb);
512         avformat_free_context(s);
513         av_free(output_streams_for_file[i]);
514     }
515     for(i=0;i<nb_input_files;i++) {
516         av_close_input_file(input_files[i]);
517         av_free(input_files_ts_scale[i]);
518     }
519
520     av_free(intra_matrix);
521     av_free(inter_matrix);
522
523     if (vstats_file)
524         fclose(vstats_file);
525     av_free(vstats_filename);
526
527     av_free(streamid_map);
528     av_free(input_codecs);
529     av_free(output_codecs);
530     av_free(stream_maps);
531     av_free(meta_data_maps);
532
533     av_free(video_codec_name);
534     av_free(audio_codec_name);
535     av_free(subtitle_codec_name);
536
537     av_free(video_standard);
538
539     uninit_opts();
540     av_free(audio_buf);
541     av_free(audio_out);
542     allocated_audio_buf_size= allocated_audio_out_size= 0;
543     av_free(samples);
544
545 #if CONFIG_AVFILTER
546     avfilter_uninit();
547 #endif
548
549     if (received_sigterm) {
550         fprintf(stderr,
551             "Received signal %d: terminating.\n",
552             (int) received_sigterm);
553         exit (255);
554     }
555
556     exit(ret); /* not all OS-es handle main() return value */
557     return ret;
558 }
559
560 /* similar to ff_dynarray_add() and av_fast_realloc() */
561 static void *grow_array(void *array, int elem_size, int *size, int new_size)
562 {
563     if (new_size >= INT_MAX / elem_size) {
564         fprintf(stderr, "Array too big.\n");
565         ffmpeg_exit(1);
566     }
567     if (*size < new_size) {
568         uint8_t *tmp = av_realloc(array, new_size*elem_size);
569         if (!tmp) {
570             fprintf(stderr, "Could not alloc buffer.\n");
571             ffmpeg_exit(1);
572         }
573         memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
574         *size = new_size;
575         return tmp;
576     }
577     return array;
578 }
579
580 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
581 {
582     if(codec && codec->sample_fmts){
583         const enum AVSampleFormat *p= codec->sample_fmts;
584         for(; *p!=-1; p++){
585             if(*p == st->codec->sample_fmt)
586                 break;
587         }
588         if (*p == -1) {
589             av_log(NULL, AV_LOG_WARNING,
590                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
591                    av_get_sample_fmt_name(st->codec->sample_fmt),
592                    codec->name,
593                    av_get_sample_fmt_name(codec->sample_fmts[0]));
594             st->codec->sample_fmt = codec->sample_fmts[0];
595         }
596     }
597 }
598
599 static void choose_sample_rate(AVStream *st, AVCodec *codec)
600 {
601     if(codec && codec->supported_samplerates){
602         const int *p= codec->supported_samplerates;
603         int best=0;
604         int best_dist=INT_MAX;
605         for(; *p; p++){
606             int dist= abs(st->codec->sample_rate - *p);
607             if(dist < best_dist){
608                 best_dist= dist;
609                 best= *p;
610             }
611         }
612         if(best_dist){
613             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
614         }
615         st->codec->sample_rate= best;
616     }
617 }
618
619 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
620 {
621     if(codec && codec->pix_fmts){
622         const enum PixelFormat *p= codec->pix_fmts;
623         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
624             if(st->codec->codec_id==CODEC_ID_MJPEG){
625                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
626             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
627                 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};
628             }
629         }
630         for(; *p!=-1; p++){
631             if(*p == st->codec->pix_fmt)
632                 break;
633         }
634         if(*p == -1)
635             st->codec->pix_fmt = codec->pix_fmts[0];
636     }
637 }
638
639 static AVOutputStream *new_output_stream(AVFormatContext *oc, int file_idx)
640 {
641     int idx = oc->nb_streams - 1;
642     AVOutputStream *ost;
643
644     output_streams_for_file[file_idx] =
645         grow_array(output_streams_for_file[file_idx],
646                    sizeof(*output_streams_for_file[file_idx]),
647                    &nb_output_streams_for_file[file_idx],
648                    oc->nb_streams);
649     ost = output_streams_for_file[file_idx][idx] =
650         av_mallocz(sizeof(AVOutputStream));
651     if (!ost) {
652         fprintf(stderr, "Could not alloc output stream\n");
653         ffmpeg_exit(1);
654     }
655     ost->file_index = file_idx;
656     ost->index = idx;
657     return ost;
658 }
659
660 static int read_ffserver_streams(AVFormatContext *s, const char *filename)
661 {
662     int i, err;
663     AVFormatContext *ic;
664     int nopts = 0;
665
666     err = av_open_input_file(&ic, filename, NULL, FFM_PACKET_SIZE, NULL);
667     if (err < 0)
668         return err;
669     /* copy stream format */
670     s->nb_streams = 0;
671     for(i=0;i<ic->nb_streams;i++) {
672         AVStream *st;
673         AVCodec *codec;
674
675         s->nb_streams++;
676
677         // FIXME: a more elegant solution is needed
678         st = av_mallocz(sizeof(AVStream));
679         memcpy(st, ic->streams[i], sizeof(AVStream));
680         st->codec = avcodec_alloc_context();
681         if (!st->codec) {
682             print_error(filename, AVERROR(ENOMEM));
683             ffmpeg_exit(1);
684         }
685         avcodec_copy_context(st->codec, ic->streams[i]->codec);
686         s->streams[i] = st;
687
688         codec = avcodec_find_encoder(st->codec->codec_id);
689         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
690             if (audio_stream_copy) {
691                 st->stream_copy = 1;
692             } else
693                 choose_sample_fmt(st, codec);
694         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
695             if (video_stream_copy) {
696                 st->stream_copy = 1;
697             } else
698                 choose_pixel_fmt(st, codec);
699         }
700
701         if(st->codec->flags & CODEC_FLAG_BITEXACT)
702             nopts = 1;
703
704         new_output_stream(s, nb_output_files);
705     }
706
707     if (!nopts)
708         s->timestamp = av_gettime();
709
710     av_close_input_file(ic);
711     return 0;
712 }
713
714 static double
715 get_sync_ipts(const AVOutputStream *ost)
716 {
717     const AVInputStream *ist = ost->sync_ist;
718     return (double)(ist->pts - start_time)/AV_TIME_BASE;
719 }
720
721 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
722     int ret;
723
724     while(bsfc){
725         AVPacket new_pkt= *pkt;
726         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
727                                           &new_pkt.data, &new_pkt.size,
728                                           pkt->data, pkt->size,
729                                           pkt->flags & AV_PKT_FLAG_KEY);
730         if(a>0){
731             av_free_packet(pkt);
732             new_pkt.destruct= av_destruct_packet;
733         } else if(a<0){
734             fprintf(stderr, "%s failed for stream %d, codec %s",
735                     bsfc->filter->name, pkt->stream_index,
736                     avctx->codec ? avctx->codec->name : "copy");
737             print_error("", a);
738             if (exit_on_error)
739                 ffmpeg_exit(1);
740         }
741         *pkt= new_pkt;
742
743         bsfc= bsfc->next;
744     }
745
746     ret= av_interleaved_write_frame(s, pkt);
747     if(ret < 0){
748         print_error("av_interleaved_write_frame()", ret);
749         ffmpeg_exit(1);
750     }
751 }
752
753 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
754
755 static void do_audio_out(AVFormatContext *s,
756                          AVOutputStream *ost,
757                          AVInputStream *ist,
758                          unsigned char *buf, int size)
759 {
760     uint8_t *buftmp;
761     int64_t audio_out_size, audio_buf_size;
762     int64_t allocated_for_size= size;
763
764     int size_out, frame_bytes, ret, resample_changed;
765     AVCodecContext *enc= ost->st->codec;
766     AVCodecContext *dec= ist->st->codec;
767     int osize= av_get_bits_per_sample_fmt(enc->sample_fmt)/8;
768     int isize= av_get_bits_per_sample_fmt(dec->sample_fmt)/8;
769     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
770
771 need_realloc:
772     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
773     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
774     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
775     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
776     audio_buf_size*= osize*enc->channels;
777
778     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
779     if(coded_bps > 8*osize)
780         audio_out_size= audio_out_size * coded_bps / (8*osize);
781     audio_out_size += FF_MIN_BUFFER_SIZE;
782
783     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
784         fprintf(stderr, "Buffer sizes too large\n");
785         ffmpeg_exit(1);
786     }
787
788     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
789     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
790     if (!audio_buf || !audio_out){
791         fprintf(stderr, "Out of memory in do_audio_out\n");
792         ffmpeg_exit(1);
793     }
794
795     if (enc->channels != dec->channels)
796         ost->audio_resample = 1;
797
798     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
799                        ost->resample_channels    != dec->channels   ||
800                        ost->resample_sample_rate != dec->sample_rate;
801
802     if ((ost->audio_resample && !ost->resample) || resample_changed) {
803         if (resample_changed) {
804             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",
805                    ist->file_index, ist->index,
806                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
807                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
808             ost->resample_sample_fmt  = dec->sample_fmt;
809             ost->resample_channels    = dec->channels;
810             ost->resample_sample_rate = dec->sample_rate;
811             if (ost->resample)
812                 audio_resample_close(ost->resample);
813         }
814         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
815         if (audio_sync_method <= 1 &&
816             ost->resample_sample_fmt  == enc->sample_fmt &&
817             ost->resample_channels    == enc->channels   &&
818             ost->resample_sample_rate == enc->sample_rate) {
819             ost->resample = NULL;
820             ost->audio_resample = 0;
821         } else {
822             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
823                 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
824             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
825                                                    enc->sample_rate, dec->sample_rate,
826                                                    enc->sample_fmt,  dec->sample_fmt,
827                                                    16, 10, 0, 0.8);
828             if (!ost->resample) {
829                 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
830                         dec->channels, dec->sample_rate,
831                         enc->channels, enc->sample_rate);
832                 ffmpeg_exit(1);
833             }
834         }
835     }
836
837 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
838     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
839         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
840         if (ost->reformat_ctx)
841             av_audio_convert_free(ost->reformat_ctx);
842         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
843                                                    dec->sample_fmt, 1, NULL, 0);
844         if (!ost->reformat_ctx) {
845             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
846                 av_get_sample_fmt_name(dec->sample_fmt),
847                 av_get_sample_fmt_name(enc->sample_fmt));
848             ffmpeg_exit(1);
849         }
850         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
851     }
852
853     if(audio_sync_method){
854         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
855                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
856         double idelta= delta*dec->sample_rate / enc->sample_rate;
857         int byte_delta= ((int)idelta)*2*dec->channels;
858
859         //FIXME resample delay
860         if(fabs(delta) > 50){
861             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
862                 if(byte_delta < 0){
863                     byte_delta= FFMAX(byte_delta, -size);
864                     size += byte_delta;
865                     buf  -= byte_delta;
866                     if(verbose > 2)
867                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
868                     if(!size)
869                         return;
870                     ist->is_start=0;
871                 }else{
872                     static uint8_t *input_tmp= NULL;
873                     input_tmp= av_realloc(input_tmp, byte_delta + size);
874
875                     if(byte_delta > allocated_for_size - size){
876                         allocated_for_size= byte_delta + (int64_t)size;
877                         goto need_realloc;
878                     }
879                     ist->is_start=0;
880
881                     memset(input_tmp, 0, byte_delta);
882                     memcpy(input_tmp + byte_delta, buf, size);
883                     buf= input_tmp;
884                     size += byte_delta;
885                     if(verbose > 2)
886                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
887                 }
888             }else if(audio_sync_method>1){
889                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
890                 av_assert0(ost->audio_resample);
891                 if(verbose > 2)
892                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
893 //                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));
894                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
895             }
896         }
897     }else
898         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
899                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
900
901     if (ost->audio_resample) {
902         buftmp = audio_buf;
903         size_out = audio_resample(ost->resample,
904                                   (short *)buftmp, (short *)buf,
905                                   size / (dec->channels * isize));
906         size_out = size_out * enc->channels * osize;
907     } else {
908         buftmp = buf;
909         size_out = size;
910     }
911
912     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
913         const void *ibuf[6]= {buftmp};
914         void *obuf[6]= {audio_buf};
915         int istride[6]= {isize};
916         int ostride[6]= {osize};
917         int len= size_out/istride[0];
918         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
919             printf("av_audio_convert() failed\n");
920             if (exit_on_error)
921                 ffmpeg_exit(1);
922             return;
923         }
924         buftmp = audio_buf;
925         size_out = len*osize;
926     }
927
928     /* now encode as many frames as possible */
929     if (enc->frame_size > 1) {
930         /* output resampled raw samples */
931         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
932             fprintf(stderr, "av_fifo_realloc2() failed\n");
933             ffmpeg_exit(1);
934         }
935         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
936
937         frame_bytes = enc->frame_size * osize * enc->channels;
938
939         while (av_fifo_size(ost->fifo) >= frame_bytes) {
940             AVPacket pkt;
941             av_init_packet(&pkt);
942
943             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
944
945             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
946
947             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
948                                        (short *)audio_buf);
949             if (ret < 0) {
950                 fprintf(stderr, "Audio encoding failed\n");
951                 ffmpeg_exit(1);
952             }
953             audio_size += ret;
954             pkt.stream_index= ost->index;
955             pkt.data= audio_out;
956             pkt.size= ret;
957             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
958                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
959             pkt.flags |= AV_PKT_FLAG_KEY;
960             write_frame(s, &pkt, enc, ost->bitstream_filters);
961
962             ost->sync_opts += enc->frame_size;
963         }
964     } else {
965         AVPacket pkt;
966         av_init_packet(&pkt);
967
968         ost->sync_opts += size_out / (osize * enc->channels);
969
970         /* output a pcm frame */
971         /* determine the size of the coded buffer */
972         size_out /= osize;
973         if (coded_bps)
974             size_out = size_out*coded_bps/8;
975
976         if(size_out > audio_out_size){
977             fprintf(stderr, "Internal error, buffer size too small\n");
978             ffmpeg_exit(1);
979         }
980
981         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
982         ret = avcodec_encode_audio(enc, audio_out, size_out,
983                                    (short *)buftmp);
984         if (ret < 0) {
985             fprintf(stderr, "Audio encoding failed\n");
986             ffmpeg_exit(1);
987         }
988         audio_size += ret;
989         pkt.stream_index= ost->index;
990         pkt.data= audio_out;
991         pkt.size= ret;
992         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
993             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
994         pkt.flags |= AV_PKT_FLAG_KEY;
995         write_frame(s, &pkt, enc, ost->bitstream_filters);
996     }
997 }
998
999 static void pre_process_video_frame(AVInputStream *ist, AVPicture *picture, void **bufp)
1000 {
1001     AVCodecContext *dec;
1002     AVPicture *picture2;
1003     AVPicture picture_tmp;
1004     uint8_t *buf = 0;
1005
1006     dec = ist->st->codec;
1007
1008     /* deinterlace : must be done before any resize */
1009     if (do_deinterlace) {
1010         int size;
1011
1012         /* create temporary picture */
1013         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1014         buf = av_malloc(size);
1015         if (!buf)
1016             return;
1017
1018         picture2 = &picture_tmp;
1019         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1020
1021         if(avpicture_deinterlace(picture2, picture,
1022                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1023             /* if error, do not deinterlace */
1024             fprintf(stderr, "Deinterlacing failed\n");
1025             av_free(buf);
1026             buf = NULL;
1027             picture2 = picture;
1028         }
1029     } else {
1030         picture2 = picture;
1031     }
1032
1033     if (picture != picture2)
1034         *picture = *picture2;
1035     *bufp = buf;
1036 }
1037
1038 /* we begin to correct av delay at this threshold */
1039 #define AV_DELAY_MAX 0.100
1040
1041 static void do_subtitle_out(AVFormatContext *s,
1042                             AVOutputStream *ost,
1043                             AVInputStream *ist,
1044                             AVSubtitle *sub,
1045                             int64_t pts)
1046 {
1047     static uint8_t *subtitle_out = NULL;
1048     int subtitle_out_max_size = 1024 * 1024;
1049     int subtitle_out_size, nb, i;
1050     AVCodecContext *enc;
1051     AVPacket pkt;
1052
1053     if (pts == AV_NOPTS_VALUE) {
1054         fprintf(stderr, "Subtitle packets must have a pts\n");
1055         if (exit_on_error)
1056             ffmpeg_exit(1);
1057         return;
1058     }
1059
1060     enc = ost->st->codec;
1061
1062     if (!subtitle_out) {
1063         subtitle_out = av_malloc(subtitle_out_max_size);
1064     }
1065
1066     /* Note: DVB subtitle need one packet to draw them and one other
1067        packet to clear them */
1068     /* XXX: signal it in the codec context ? */
1069     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1070         nb = 2;
1071     else
1072         nb = 1;
1073
1074     for(i = 0; i < nb; i++) {
1075         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1076         // start_display_time is required to be 0
1077         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1078         sub->end_display_time -= sub->start_display_time;
1079         sub->start_display_time = 0;
1080         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1081                                                     subtitle_out_max_size, sub);
1082         if (subtitle_out_size < 0) {
1083             fprintf(stderr, "Subtitle encoding failed\n");
1084             ffmpeg_exit(1);
1085         }
1086
1087         av_init_packet(&pkt);
1088         pkt.stream_index = ost->index;
1089         pkt.data = subtitle_out;
1090         pkt.size = subtitle_out_size;
1091         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1092         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1093             /* XXX: the pts correction is handled here. Maybe handling
1094                it in the codec would be better */
1095             if (i == 0)
1096                 pkt.pts += 90 * sub->start_display_time;
1097             else
1098                 pkt.pts += 90 * sub->end_display_time;
1099         }
1100         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1101     }
1102 }
1103
1104 static int bit_buffer_size= 1024*256;
1105 static uint8_t *bit_buffer= NULL;
1106
1107 static void do_video_out(AVFormatContext *s,
1108                          AVOutputStream *ost,
1109                          AVInputStream *ist,
1110                          AVFrame *in_picture,
1111                          int *frame_size)
1112 {
1113     int nb_frames, i, ret;
1114     AVFrame *final_picture, *formatted_picture, *resampling_dst, *padding_src;
1115     AVCodecContext *enc, *dec;
1116     double sync_ipts;
1117
1118     enc = ost->st->codec;
1119     dec = ist->st->codec;
1120
1121     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1122
1123     /* by default, we output a single frame */
1124     nb_frames = 1;
1125
1126     *frame_size = 0;
1127
1128     if(video_sync_method){
1129         double vdelta = sync_ipts - ost->sync_opts;
1130         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1131         if (vdelta < -1.1)
1132             nb_frames = 0;
1133         else if (video_sync_method == 2 || (video_sync_method<0 && (s->oformat->flags & AVFMT_VARIABLE_FPS))){
1134             if(vdelta<=-0.6){
1135                 nb_frames=0;
1136             }else if(vdelta>0.6)
1137                 ost->sync_opts= lrintf(sync_ipts);
1138         }else if (vdelta > 1.1)
1139             nb_frames = lrintf(vdelta);
1140 //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);
1141         if (nb_frames == 0){
1142             ++nb_frames_drop;
1143             if (verbose>2)
1144                 fprintf(stderr, "*** drop!\n");
1145         }else if (nb_frames > 1) {
1146             nb_frames_dup += nb_frames - 1;
1147             if (verbose>2)
1148                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1149         }
1150     }else
1151         ost->sync_opts= lrintf(sync_ipts);
1152
1153     nb_frames= FFMIN(nb_frames, max_frames[AVMEDIA_TYPE_VIDEO] - ost->frame_number);
1154     if (nb_frames <= 0)
1155         return;
1156
1157     formatted_picture = in_picture;
1158     final_picture = formatted_picture;
1159     padding_src = formatted_picture;
1160     resampling_dst = &ost->pict_tmp;
1161
1162     if (   ost->resample_height != ist->st->codec->height
1163         || ost->resample_width  != ist->st->codec->width
1164         || (ost->resample_pix_fmt!= ist->st->codec->pix_fmt) ) {
1165
1166         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));
1167         if(!ost->video_resample)
1168             ffmpeg_exit(1);
1169     }
1170
1171 #if !CONFIG_AVFILTER
1172     if (ost->video_resample) {
1173         padding_src = NULL;
1174         final_picture = &ost->pict_tmp;
1175         if(  ost->resample_height != ist->st->codec->height
1176           || ost->resample_width  != ist->st->codec->width
1177           || (ost->resample_pix_fmt!= ist->st->codec->pix_fmt) ) {
1178
1179             /* initialize a new scaler context */
1180             sws_freeContext(ost->img_resample_ctx);
1181             sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
1182             ost->img_resample_ctx = sws_getContext(
1183                 ist->st->codec->width,
1184                 ist->st->codec->height,
1185                 ist->st->codec->pix_fmt,
1186                 ost->st->codec->width,
1187                 ost->st->codec->height,
1188                 ost->st->codec->pix_fmt,
1189                 sws_flags, NULL, NULL, NULL);
1190             if (ost->img_resample_ctx == NULL) {
1191                 fprintf(stderr, "Cannot get resampling context\n");
1192                 ffmpeg_exit(1);
1193             }
1194         }
1195         sws_scale(ost->img_resample_ctx, formatted_picture->data, formatted_picture->linesize,
1196               0, ost->resample_height, resampling_dst->data, resampling_dst->linesize);
1197     }
1198 #endif
1199
1200     /* duplicates frame if needed */
1201     for(i=0;i<nb_frames;i++) {
1202         AVPacket pkt;
1203         av_init_packet(&pkt);
1204         pkt.stream_index= ost->index;
1205
1206         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1207             /* raw pictures are written as AVPicture structure to
1208                avoid any copies. We support temorarily the older
1209                method. */
1210             AVFrame* old_frame = enc->coded_frame;
1211             enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
1212             pkt.data= (uint8_t *)final_picture;
1213             pkt.size=  sizeof(AVPicture);
1214             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1215             pkt.flags |= AV_PKT_FLAG_KEY;
1216
1217             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1218             enc->coded_frame = old_frame;
1219         } else {
1220             AVFrame big_picture;
1221
1222             big_picture= *final_picture;
1223             /* better than nothing: use input picture interlaced
1224                settings */
1225             big_picture.interlaced_frame = in_picture->interlaced_frame;
1226             if(avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)){
1227                 if(top_field_first == -1)
1228                     big_picture.top_field_first = in_picture->top_field_first;
1229                 else
1230                     big_picture.top_field_first = top_field_first;
1231             }
1232
1233             /* handles sameq here. This is not correct because it may
1234                not be a global option */
1235             big_picture.quality = same_quality ? ist->st->quality : ost->st->quality;
1236             if(!me_threshold)
1237                 big_picture.pict_type = 0;
1238 //            big_picture.pts = AV_NOPTS_VALUE;
1239             big_picture.pts= ost->sync_opts;
1240 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1241 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1242             if (ost->forced_kf_index < ost->forced_kf_count &&
1243                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1244                 big_picture.pict_type = FF_I_TYPE;
1245                 ost->forced_kf_index++;
1246             }
1247             ret = avcodec_encode_video(enc,
1248                                        bit_buffer, bit_buffer_size,
1249                                        &big_picture);
1250             if (ret < 0) {
1251                 fprintf(stderr, "Video encoding failed\n");
1252                 ffmpeg_exit(1);
1253             }
1254
1255             if(ret>0){
1256                 pkt.data= bit_buffer;
1257                 pkt.size= ret;
1258                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1259                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1260 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1261    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1262    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1263
1264                 if(enc->coded_frame->key_frame)
1265                     pkt.flags |= AV_PKT_FLAG_KEY;
1266                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1267                 *frame_size = ret;
1268                 video_size += ret;
1269                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1270                 //        enc->frame_number-1, ret, enc->pict_type);
1271                 /* if two pass, output log */
1272                 if (ost->logfile && enc->stats_out) {
1273                     fprintf(ost->logfile, "%s", enc->stats_out);
1274                 }
1275             }
1276         }
1277         ost->sync_opts++;
1278         ost->frame_number++;
1279     }
1280 }
1281
1282 static double psnr(double d){
1283     return -10.0*log(d)/log(10.0);
1284 }
1285
1286 static void do_video_stats(AVFormatContext *os, AVOutputStream *ost,
1287                            int frame_size)
1288 {
1289     AVCodecContext *enc;
1290     int frame_number;
1291     double ti1, bitrate, avg_bitrate;
1292
1293     /* this is executed just the first time do_video_stats is called */
1294     if (!vstats_file) {
1295         vstats_file = fopen(vstats_filename, "w");
1296         if (!vstats_file) {
1297             perror("fopen");
1298             ffmpeg_exit(1);
1299         }
1300     }
1301
1302     enc = ost->st->codec;
1303     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1304         frame_number = ost->frame_number;
1305         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1306         if (enc->flags&CODEC_FLAG_PSNR)
1307             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1308
1309         fprintf(vstats_file,"f_size= %6d ", frame_size);
1310         /* compute pts value */
1311         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1312         if (ti1 < 0.01)
1313             ti1 = 0.01;
1314
1315         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1316         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1317         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1318             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1319         fprintf(vstats_file,"type= %c\n", av_get_pict_type_char(enc->coded_frame->pict_type));
1320     }
1321 }
1322
1323 static void print_report(AVFormatContext **output_files,
1324                          AVOutputStream **ost_table, int nb_ostreams,
1325                          int is_last_report)
1326 {
1327     char buf[1024];
1328     AVOutputStream *ost;
1329     AVFormatContext *oc;
1330     int64_t total_size;
1331     AVCodecContext *enc;
1332     int frame_number, vid, i;
1333     double bitrate, ti1, pts;
1334     static int64_t last_time = -1;
1335     static int qp_histogram[52];
1336
1337     if (!is_last_report) {
1338         int64_t cur_time;
1339         /* display the report every 0.5 seconds */
1340         cur_time = av_gettime();
1341         if (last_time == -1) {
1342             last_time = cur_time;
1343             return;
1344         }
1345         if ((cur_time - last_time) < 500000)
1346             return;
1347         last_time = cur_time;
1348     }
1349
1350
1351     oc = output_files[0];
1352
1353     total_size = url_fsize(oc->pb);
1354     if(total_size<0) // FIXME improve url_fsize() so it works with non seekable output too
1355         total_size= url_ftell(oc->pb);
1356
1357     buf[0] = '\0';
1358     ti1 = 1e10;
1359     vid = 0;
1360     for(i=0;i<nb_ostreams;i++) {
1361         ost = ost_table[i];
1362         enc = ost->st->codec;
1363         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1364             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ",
1365                      !ost->st->stream_copy ?
1366                      enc->coded_frame->quality/(float)FF_QP2LAMBDA : -1);
1367         }
1368         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1369             float t = (av_gettime()-timer_start) / 1000000.0;
1370
1371             frame_number = ost->frame_number;
1372             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1373                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0,
1374                      !ost->st->stream_copy ?
1375                      enc->coded_frame->quality/(float)FF_QP2LAMBDA : -1);
1376             if(is_last_report)
1377                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1378             if(qp_hist){
1379                 int j;
1380                 int qp= lrintf(enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1381                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1382                     qp_histogram[qp]++;
1383                 for(j=0; j<32; j++)
1384                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1385             }
1386             if (enc->flags&CODEC_FLAG_PSNR){
1387                 int j;
1388                 double error, error_sum=0;
1389                 double scale, scale_sum=0;
1390                 char type[3]= {'Y','U','V'};
1391                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1392                 for(j=0; j<3; j++){
1393                     if(is_last_report){
1394                         error= enc->error[j];
1395                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1396                     }else{
1397                         error= enc->coded_frame->error[j];
1398                         scale= enc->width*enc->height*255.0*255.0;
1399                     }
1400                     if(j) scale/=4;
1401                     error_sum += error;
1402                     scale_sum += scale;
1403                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1404                 }
1405                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1406             }
1407             vid = 1;
1408         }
1409         /* compute min output value */
1410         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1411         if ((pts < ti1) && (pts > 0))
1412             ti1 = pts;
1413     }
1414     if (ti1 < 0.01)
1415         ti1 = 0.01;
1416
1417     if (verbose || is_last_report) {
1418         bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1419
1420         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1421             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1422             (double)total_size / 1024, ti1, bitrate);
1423
1424         if (nb_frames_dup || nb_frames_drop)
1425           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1426                   nb_frames_dup, nb_frames_drop);
1427
1428         if (verbose >= 0)
1429             fprintf(stderr, "%s    \r", buf);
1430
1431         fflush(stderr);
1432     }
1433
1434     if (is_last_report && verbose >= 0){
1435         int64_t raw= audio_size + video_size + extra_size;
1436         fprintf(stderr, "\n");
1437         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1438                 video_size/1024.0,
1439                 audio_size/1024.0,
1440                 extra_size/1024.0,
1441                 100.0*(total_size - raw)/raw
1442         );
1443     }
1444 }
1445
1446 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1447 static int output_packet(AVInputStream *ist, int ist_index,
1448                          AVOutputStream **ost_table, int nb_ostreams,
1449                          const AVPacket *pkt)
1450 {
1451     AVFormatContext *os;
1452     AVOutputStream *ost;
1453     int ret, i;
1454     int got_picture;
1455     AVFrame picture;
1456     void *buffer_to_free;
1457     static unsigned int samples_size= 0;
1458     AVSubtitle subtitle, *subtitle_to_free;
1459     int64_t pkt_pts = AV_NOPTS_VALUE;
1460 #if CONFIG_AVFILTER
1461     int frame_available;
1462 #endif
1463
1464     AVPacket avpkt;
1465     int bps = av_get_bits_per_sample_fmt(ist->st->codec->sample_fmt)>>3;
1466
1467     if(ist->next_pts == AV_NOPTS_VALUE)
1468         ist->next_pts= ist->pts;
1469
1470     if (pkt == NULL) {
1471         /* EOF handling */
1472         av_init_packet(&avpkt);
1473         avpkt.data = NULL;
1474         avpkt.size = 0;
1475         goto handle_eof;
1476     } else {
1477         avpkt = *pkt;
1478     }
1479
1480     if(pkt->dts != AV_NOPTS_VALUE)
1481         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1482     if(pkt->pts != AV_NOPTS_VALUE)
1483         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1484
1485     //while we have more to decode or while the decoder did output something on EOF
1486     while (avpkt.size > 0 || (!pkt && ist->next_pts != ist->pts)) {
1487         uint8_t *data_buf, *decoded_data_buf;
1488         int data_size, decoded_data_size;
1489     handle_eof:
1490         ist->pts= ist->next_pts;
1491
1492         if(avpkt.size && avpkt.size != pkt->size &&
1493            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1494             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1495             ist->showed_multi_packet_warning=1;
1496         }
1497
1498         /* decode the packet if needed */
1499         decoded_data_buf = NULL; /* fail safe */
1500         decoded_data_size= 0;
1501         data_buf  = avpkt.data;
1502         data_size = avpkt.size;
1503         subtitle_to_free = NULL;
1504         if (ist->decoding_needed) {
1505             switch(ist->st->codec->codec_type) {
1506             case AVMEDIA_TYPE_AUDIO:{
1507                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1508                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1509                     av_free(samples);
1510                     samples= av_malloc(samples_size);
1511                 }
1512                 decoded_data_size= samples_size;
1513                     /* XXX: could avoid copy if PCM 16 bits with same
1514                        endianness as CPU */
1515                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1516                                             &avpkt);
1517                 if (ret < 0)
1518                     goto fail_decode;
1519                 avpkt.data += ret;
1520                 avpkt.size -= ret;
1521                 data_size   = ret;
1522                 /* Some bug in mpeg audio decoder gives */
1523                 /* decoded_data_size < 0, it seems they are overflows */
1524                 if (decoded_data_size <= 0) {
1525                     /* no audio frame */
1526                     continue;
1527                 }
1528                 decoded_data_buf = (uint8_t *)samples;
1529                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1530                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1531                 break;}
1532             case AVMEDIA_TYPE_VIDEO:
1533                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1534                     /* XXX: allocate picture correctly */
1535                     avcodec_get_frame_defaults(&picture);
1536                     avpkt.pts = pkt_pts;
1537                     avpkt.dts = ist->pts;
1538                     pkt_pts = AV_NOPTS_VALUE;
1539
1540                     ret = avcodec_decode_video2(ist->st->codec,
1541                                                 &picture, &got_picture, &avpkt);
1542                     ist->st->quality= picture.quality;
1543                     if (ret < 0)
1544                         goto fail_decode;
1545                     if (!got_picture) {
1546                         /* no picture yet */
1547                         goto discard_packet;
1548                     }
1549                     ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, picture.pkt_pts, picture.pkt_dts);
1550                     if (ist->st->codec->time_base.num != 0) {
1551                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1552                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1553                                           ist->st->codec->time_base.num * ticks) /
1554                             ist->st->codec->time_base.den;
1555                     }
1556                     avpkt.size = 0;
1557                     break;
1558             case AVMEDIA_TYPE_SUBTITLE:
1559                 ret = avcodec_decode_subtitle2(ist->st->codec,
1560                                                &subtitle, &got_picture, &avpkt);
1561                 if (ret < 0)
1562                     goto fail_decode;
1563                 if (!got_picture) {
1564                     goto discard_packet;
1565                 }
1566                 subtitle_to_free = &subtitle;
1567                 avpkt.size = 0;
1568                 break;
1569             default:
1570                 goto fail_decode;
1571             }
1572         } else {
1573             switch(ist->st->codec->codec_type) {
1574             case AVMEDIA_TYPE_AUDIO:
1575                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1576                     ist->st->codec->sample_rate;
1577                 break;
1578             case AVMEDIA_TYPE_VIDEO:
1579                 if (ist->st->codec->time_base.num != 0) {
1580                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1581                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1582                                       ist->st->codec->time_base.num * ticks) /
1583                         ist->st->codec->time_base.den;
1584                 }
1585                 break;
1586             }
1587             ret = avpkt.size;
1588             avpkt.size = 0;
1589         }
1590
1591         buffer_to_free = NULL;
1592         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1593             pre_process_video_frame(ist, (AVPicture *)&picture,
1594                                     &buffer_to_free);
1595         }
1596
1597 #if CONFIG_AVFILTER
1598         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ist->input_video_filter) {
1599             AVRational sar;
1600             if (ist->st->sample_aspect_ratio.num) sar = ist->st->sample_aspect_ratio;
1601             else                                  sar = ist->st->codec->sample_aspect_ratio;
1602             // add it to be filtered
1603             av_vsrc_buffer_add_frame(ist->input_video_filter, &picture,
1604                                      ist->pts,
1605                                      sar);
1606         }
1607 #endif
1608
1609         // preprocess audio (volume)
1610         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1611             if (audio_volume != 256) {
1612                 short *volp;
1613                 volp = samples;
1614                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1615                     int v = ((*volp) * audio_volume + 128) >> 8;
1616                     if (v < -32768) v = -32768;
1617                     if (v >  32767) v = 32767;
1618                     *volp++ = v;
1619                 }
1620             }
1621         }
1622
1623         /* frame rate emulation */
1624         if (rate_emu) {
1625             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1626             int64_t now = av_gettime() - ist->start;
1627             if (pts > now)
1628                 usleep(pts - now);
1629         }
1630 #if CONFIG_AVFILTER
1631         frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1632             !ist->output_video_filter || avfilter_poll_frame(ist->output_video_filter->inputs[0]);
1633 #endif
1634         /* if output time reached then transcode raw format,
1635            encode packets and output them */
1636         if (start_time == 0 || ist->pts >= start_time)
1637 #if CONFIG_AVFILTER
1638         while (frame_available) {
1639             AVRational ist_pts_tb;
1640             if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ist->output_video_filter)
1641                 get_filtered_video_frame(ist->output_video_filter, &picture, &ist->picref, &ist_pts_tb);
1642             if (ist->picref)
1643                 ist->pts = av_rescale_q(ist->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1644 #endif
1645             for(i=0;i<nb_ostreams;i++) {
1646                 int frame_size;
1647
1648                 ost = ost_table[i];
1649                 if (ost->source_index == ist_index) {
1650                     os = output_files[ost->file_index];
1651
1652                     /* set the input output pts pairs */
1653                     //ost->sync_ipts = (double)(ist->pts + input_files_ts_offset[ist->file_index] - start_time)/ AV_TIME_BASE;
1654
1655                     if (ost->encoding_needed) {
1656                         av_assert0(ist->decoding_needed);
1657                         switch(ost->st->codec->codec_type) {
1658                         case AVMEDIA_TYPE_AUDIO:
1659                             do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1660                             break;
1661                         case AVMEDIA_TYPE_VIDEO:
1662 #if CONFIG_AVFILTER
1663                             if (ist->picref->video)
1664                                 ost->st->codec->sample_aspect_ratio = ist->picref->video->pixel_aspect;
1665 #endif
1666                             do_video_out(os, ost, ist, &picture, &frame_size);
1667                             if (vstats_filename && frame_size)
1668                                 do_video_stats(os, ost, frame_size);
1669                             break;
1670                         case AVMEDIA_TYPE_SUBTITLE:
1671                             do_subtitle_out(os, ost, ist, &subtitle,
1672                                             pkt->pts);
1673                             break;
1674                         default:
1675                             abort();
1676                         }
1677                     } else {
1678                         AVFrame avframe; //FIXME/XXX remove this
1679                         AVPacket opkt;
1680                         int64_t ost_tb_start_time= av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1681
1682                         av_init_packet(&opkt);
1683
1684                         if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1685                             continue;
1686
1687                         /* no reencoding needed : output the packet directly */
1688                         /* force the input stream PTS */
1689
1690                         avcodec_get_frame_defaults(&avframe);
1691                         ost->st->codec->coded_frame= &avframe;
1692                         avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1693
1694                         if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1695                             audio_size += data_size;
1696                         else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1697                             video_size += data_size;
1698                             ost->sync_opts++;
1699                         }
1700
1701                         opkt.stream_index= ost->index;
1702                         if(pkt->pts != AV_NOPTS_VALUE)
1703                             opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1704                         else
1705                             opkt.pts= AV_NOPTS_VALUE;
1706
1707                         if (pkt->dts == AV_NOPTS_VALUE)
1708                             opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1709                         else
1710                             opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1711                         opkt.dts -= ost_tb_start_time;
1712
1713                         opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1714                         opkt.flags= pkt->flags;
1715
1716                         //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1717                         if(   ost->st->codec->codec_id != CODEC_ID_H264
1718                            && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1719                            && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1720                            ) {
1721                             if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1722                                 opkt.destruct= av_destruct_packet;
1723                         } else {
1724                             opkt.data = data_buf;
1725                             opkt.size = data_size;
1726                         }
1727
1728                         write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1729                         ost->st->codec->frame_number++;
1730                         ost->frame_number++;
1731                         av_free_packet(&opkt);
1732                     }
1733                 }
1734             }
1735
1736 #if CONFIG_AVFILTER
1737             frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1738                               ist->output_video_filter && avfilter_poll_frame(ist->output_video_filter->inputs[0]);
1739             if(ist->picref)
1740                 avfilter_unref_buffer(ist->picref);
1741         }
1742 #endif
1743         av_free(buffer_to_free);
1744         /* XXX: allocate the subtitles in the codec ? */
1745         if (subtitle_to_free) {
1746             avsubtitle_free(subtitle_to_free);
1747             subtitle_to_free = NULL;
1748         }
1749     }
1750  discard_packet:
1751     if (pkt == NULL) {
1752         /* EOF handling */
1753
1754         for(i=0;i<nb_ostreams;i++) {
1755             ost = ost_table[i];
1756             if (ost->source_index == ist_index) {
1757                 AVCodecContext *enc= ost->st->codec;
1758                 os = output_files[ost->file_index];
1759
1760                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1761                     continue;
1762                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1763                     continue;
1764
1765                 if (ost->encoding_needed) {
1766                     for(;;) {
1767                         AVPacket pkt;
1768                         int fifo_bytes;
1769                         av_init_packet(&pkt);
1770                         pkt.stream_index= ost->index;
1771
1772                         switch(ost->st->codec->codec_type) {
1773                         case AVMEDIA_TYPE_AUDIO:
1774                             fifo_bytes = av_fifo_size(ost->fifo);
1775                             ret = 0;
1776                             /* encode any samples remaining in fifo */
1777                             if (fifo_bytes > 0) {
1778                                 int osize = av_get_bits_per_sample_fmt(enc->sample_fmt) >> 3;
1779                                 int fs_tmp = enc->frame_size;
1780
1781                                 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1782                                 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1783                                     enc->frame_size = fifo_bytes / (osize * enc->channels);
1784                                 } else { /* pad */
1785                                     int frame_bytes = enc->frame_size*osize*enc->channels;
1786                                     if (allocated_audio_buf_size < frame_bytes)
1787                                         ffmpeg_exit(1);
1788                                     memset(audio_buf+fifo_bytes, 0, frame_bytes - fifo_bytes);
1789                                 }
1790
1791                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1792                                 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1793                                                           ost->st->time_base.num, enc->sample_rate);
1794                                 enc->frame_size = fs_tmp;
1795                             }
1796                             if(ret <= 0) {
1797                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1798                             }
1799                             if (ret < 0) {
1800                                 fprintf(stderr, "Audio encoding failed\n");
1801                                 ffmpeg_exit(1);
1802                             }
1803                             audio_size += ret;
1804                             pkt.flags |= AV_PKT_FLAG_KEY;
1805                             break;
1806                         case AVMEDIA_TYPE_VIDEO:
1807                             ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1808                             if (ret < 0) {
1809                                 fprintf(stderr, "Video encoding failed\n");
1810                                 ffmpeg_exit(1);
1811                             }
1812                             video_size += ret;
1813                             if(enc->coded_frame && enc->coded_frame->key_frame)
1814                                 pkt.flags |= AV_PKT_FLAG_KEY;
1815                             if (ost->logfile && enc->stats_out) {
1816                                 fprintf(ost->logfile, "%s", enc->stats_out);
1817                             }
1818                             break;
1819                         default:
1820                             ret=-1;
1821                         }
1822
1823                         if(ret<=0)
1824                             break;
1825                         pkt.data= bit_buffer;
1826                         pkt.size= ret;
1827                         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1828                             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1829                         write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1830                     }
1831                 }
1832             }
1833         }
1834     }
1835
1836     return 0;
1837  fail_decode:
1838     return -1;
1839 }
1840
1841 static void print_sdp(AVFormatContext **avc, int n)
1842 {
1843     char sdp[2048];
1844
1845     avf_sdp_create(avc, n, sdp, sizeof(sdp));
1846     printf("SDP:\n%s\n", sdp);
1847     fflush(stdout);
1848 }
1849
1850 static int copy_chapters(int infile, int outfile)
1851 {
1852     AVFormatContext *is = input_files[infile];
1853     AVFormatContext *os = output_files[outfile];
1854     int i;
1855
1856     for (i = 0; i < is->nb_chapters; i++) {
1857         AVChapter *in_ch = is->chapters[i], *out_ch;
1858         int64_t ts_off   = av_rescale_q(start_time - input_files_ts_offset[infile],
1859                                       AV_TIME_BASE_Q, in_ch->time_base);
1860         int64_t rt       = (recording_time == INT64_MAX) ? INT64_MAX :
1861                            av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
1862
1863
1864         if (in_ch->end < ts_off)
1865             continue;
1866         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
1867             break;
1868
1869         out_ch = av_mallocz(sizeof(AVChapter));
1870         if (!out_ch)
1871             return AVERROR(ENOMEM);
1872
1873         out_ch->id        = in_ch->id;
1874         out_ch->time_base = in_ch->time_base;
1875         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
1876         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
1877
1878         if (metadata_chapters_autocopy)
1879             av_metadata_copy(&out_ch->metadata, in_ch->metadata, 0);
1880
1881         os->nb_chapters++;
1882         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
1883         if (!os->chapters)
1884             return AVERROR(ENOMEM);
1885         os->chapters[os->nb_chapters - 1] = out_ch;
1886     }
1887     return 0;
1888 }
1889
1890 static void parse_forced_key_frames(char *kf, AVOutputStream *ost,
1891                                     AVCodecContext *avctx)
1892 {
1893     char *p;
1894     int n = 1, i;
1895     int64_t t;
1896
1897     for (p = kf; *p; p++)
1898         if (*p == ',')
1899             n++;
1900     ost->forced_kf_count = n;
1901     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1902     if (!ost->forced_kf_pts) {
1903         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1904         ffmpeg_exit(1);
1905     }
1906     for (i = 0; i < n; i++) {
1907         p = i ? strchr(p, ',') + 1 : kf;
1908         t = parse_time_or_die("force_key_frames", p, 1);
1909         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1910     }
1911 }
1912
1913 /*
1914  * The following code is the main loop of the file converter
1915  */
1916 static int transcode(AVFormatContext **output_files,
1917                      int nb_output_files,
1918                      AVFormatContext **input_files,
1919                      int nb_input_files,
1920                      AVStreamMap *stream_maps, int nb_stream_maps)
1921 {
1922     int ret = 0, i, j, k, n, nb_istreams = 0, nb_ostreams = 0;
1923     AVFormatContext *is, *os;
1924     AVCodecContext *codec, *icodec;
1925     AVOutputStream *ost, **ost_table = NULL;
1926     AVInputStream *ist, **ist_table = NULL;
1927     AVInputFile *file_table;
1928     char error[1024];
1929     int key;
1930     int want_sdp = 1;
1931     uint8_t no_packet[MAX_FILES]={0};
1932     int no_packet_count=0;
1933
1934     file_table= av_mallocz(nb_input_files * sizeof(AVInputFile));
1935     if (!file_table)
1936         goto fail;
1937
1938     /* input stream init */
1939     j = 0;
1940     for(i=0;i<nb_input_files;i++) {
1941         is = input_files[i];
1942         file_table[i].ist_index = j;
1943         file_table[i].nb_streams = is->nb_streams;
1944         j += is->nb_streams;
1945     }
1946     nb_istreams = j;
1947
1948     ist_table = av_mallocz(nb_istreams * sizeof(AVInputStream *));
1949     if (!ist_table)
1950         goto fail;
1951
1952     for(i=0;i<nb_istreams;i++) {
1953         ist = av_mallocz(sizeof(AVInputStream));
1954         if (!ist)
1955             goto fail;
1956         ist_table[i] = ist;
1957     }
1958     j = 0;
1959     for(i=0;i<nb_input_files;i++) {
1960         is = input_files[i];
1961         for(k=0;k<is->nb_streams;k++) {
1962             ist = ist_table[j++];
1963             ist->st = is->streams[k];
1964             ist->file_index = i;
1965             ist->index = k;
1966             ist->discard = 1; /* the stream is discarded by default
1967                                  (changed later) */
1968
1969             if (rate_emu) {
1970                 ist->start = av_gettime();
1971             }
1972         }
1973     }
1974
1975     /* output stream init */
1976     nb_ostreams = 0;
1977     for(i=0;i<nb_output_files;i++) {
1978         os = output_files[i];
1979         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1980             av_dump_format(output_files[i], i, output_files[i]->filename, 1);
1981             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
1982             ret = AVERROR(EINVAL);
1983             goto fail;
1984         }
1985         nb_ostreams += os->nb_streams;
1986     }
1987     if (nb_stream_maps > 0 && nb_stream_maps != nb_ostreams) {
1988         fprintf(stderr, "Number of stream maps must match number of output streams\n");
1989         ret = AVERROR(EINVAL);
1990         goto fail;
1991     }
1992
1993     /* Sanity check the mapping args -- do the input files & streams exist? */
1994     for(i=0;i<nb_stream_maps;i++) {
1995         int fi = stream_maps[i].file_index;
1996         int si = stream_maps[i].stream_index;
1997
1998         if (fi < 0 || fi > nb_input_files - 1 ||
1999             si < 0 || si > file_table[fi].nb_streams - 1) {
2000             fprintf(stderr,"Could not find input stream #%d.%d\n", fi, si);
2001             ret = AVERROR(EINVAL);
2002             goto fail;
2003         }
2004         fi = stream_maps[i].sync_file_index;
2005         si = stream_maps[i].sync_stream_index;
2006         if (fi < 0 || fi > nb_input_files - 1 ||
2007             si < 0 || si > file_table[fi].nb_streams - 1) {
2008             fprintf(stderr,"Could not find sync stream #%d.%d\n", fi, si);
2009             ret = AVERROR(EINVAL);
2010             goto fail;
2011         }
2012     }
2013
2014     ost_table = av_mallocz(sizeof(AVOutputStream *) * nb_ostreams);
2015     if (!ost_table)
2016         goto fail;
2017     n = 0;
2018     for(k=0;k<nb_output_files;k++) {
2019         os = output_files[k];
2020         for(i=0;i<os->nb_streams;i++,n++) {
2021             int found;
2022             ost = ost_table[n] = output_streams_for_file[k][i];
2023             ost->st = os->streams[i];
2024             if (nb_stream_maps > 0) {
2025                 ost->source_index = file_table[stream_maps[n].file_index].ist_index +
2026                     stream_maps[n].stream_index;
2027
2028                 /* Sanity check that the stream types match */
2029                 if (ist_table[ost->source_index]->st->codec->codec_type != ost->st->codec->codec_type) {
2030                     int i= ost->file_index;
2031                     av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2032                     fprintf(stderr, "Codec type mismatch for mapping #%d.%d -> #%d.%d\n",
2033                         stream_maps[n].file_index, stream_maps[n].stream_index,
2034                         ost->file_index, ost->index);
2035                     ffmpeg_exit(1);
2036                 }
2037
2038             } else {
2039                 int best_nb_frames=-1;
2040                 /* get corresponding input stream index : we select the first one with the right type */
2041                 found = 0;
2042                 for(j=0;j<nb_istreams;j++) {
2043                     int skip=0;
2044                     ist = ist_table[j];
2045                     if(opt_programid){
2046                         int pi,si;
2047                         AVFormatContext *f= input_files[ ist->file_index ];
2048                         skip=1;
2049                         for(pi=0; pi<f->nb_programs; pi++){
2050                             AVProgram *p= f->programs[pi];
2051                             if(p->id == opt_programid)
2052                                 for(si=0; si<p->nb_stream_indexes; si++){
2053                                     if(f->streams[ p->stream_index[si] ] == ist->st)
2054                                         skip=0;
2055                                 }
2056                         }
2057                     }
2058                     if (ist->discard && ist->st->discard != AVDISCARD_ALL && !skip &&
2059                         ist->st->codec->codec_type == ost->st->codec->codec_type) {
2060                         if(best_nb_frames < ist->st->codec_info_nb_frames){
2061                             best_nb_frames= ist->st->codec_info_nb_frames;
2062                             ost->source_index = j;
2063                             found = 1;
2064                         }
2065                     }
2066                 }
2067
2068                 if (!found) {
2069                     if(! opt_programid) {
2070                         /* try again and reuse existing stream */
2071                         for(j=0;j<nb_istreams;j++) {
2072                             ist = ist_table[j];
2073                             if (   ist->st->codec->codec_type == ost->st->codec->codec_type
2074                                 && ist->st->discard != AVDISCARD_ALL) {
2075                                 ost->source_index = j;
2076                                 found = 1;
2077                             }
2078                         }
2079                     }
2080                     if (!found) {
2081                         int i= ost->file_index;
2082                         av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2083                         fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",
2084                                 ost->file_index, ost->index);
2085                         ffmpeg_exit(1);
2086                     }
2087                 }
2088             }
2089             ist = ist_table[ost->source_index];
2090             ist->discard = 0;
2091             ost->sync_ist = (nb_stream_maps > 0) ?
2092                 ist_table[file_table[stream_maps[n].sync_file_index].ist_index +
2093                          stream_maps[n].sync_stream_index] : ist;
2094         }
2095     }
2096
2097     /* for each output stream, we compute the right encoding parameters */
2098     for(i=0;i<nb_ostreams;i++) {
2099         ost = ost_table[i];
2100         os = output_files[ost->file_index];
2101         ist = ist_table[ost->source_index];
2102
2103         codec = ost->st->codec;
2104         icodec = ist->st->codec;
2105
2106         if (metadata_streams_autocopy)
2107             av_metadata_copy(&ost->st->metadata, ist->st->metadata,
2108                              AV_METADATA_DONT_OVERWRITE);
2109
2110         ost->st->disposition = ist->st->disposition;
2111         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2112         codec->chroma_sample_location = icodec->chroma_sample_location;
2113
2114         if (ost->st->stream_copy) {
2115             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2116
2117             if (extra_size > INT_MAX)
2118                 goto fail;
2119
2120             /* if stream_copy is selected, no need to decode or encode */
2121             codec->codec_id = icodec->codec_id;
2122             codec->codec_type = icodec->codec_type;
2123
2124             if(!codec->codec_tag){
2125                 if(   !os->oformat->codec_tag
2126                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2127                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2128                     codec->codec_tag = icodec->codec_tag;
2129             }
2130
2131             codec->bit_rate = icodec->bit_rate;
2132             codec->rc_max_rate    = icodec->rc_max_rate;
2133             codec->rc_buffer_size = icodec->rc_buffer_size;
2134             codec->extradata= av_mallocz(extra_size);
2135             if (!codec->extradata)
2136                 goto fail;
2137             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2138             codec->extradata_size= icodec->extradata_size;
2139             if(!copy_tb && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base) && av_q2d(ist->st->time_base) < 1.0/500){
2140                 codec->time_base = icodec->time_base;
2141                 codec->time_base.num *= icodec->ticks_per_frame;
2142                 av_reduce(&codec->time_base.num, &codec->time_base.den,
2143                           codec->time_base.num, codec->time_base.den, INT_MAX);
2144             }else
2145                 codec->time_base = ist->st->time_base;
2146             switch(codec->codec_type) {
2147             case AVMEDIA_TYPE_AUDIO:
2148                 if(audio_volume != 256) {
2149                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2150                     ffmpeg_exit(1);
2151                 }
2152                 codec->channel_layout = icodec->channel_layout;
2153                 codec->sample_rate = icodec->sample_rate;
2154                 codec->channels = icodec->channels;
2155                 codec->frame_size = icodec->frame_size;
2156                 codec->block_align= icodec->block_align;
2157                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2158                     codec->block_align= 0;
2159                 if(codec->codec_id == CODEC_ID_AC3)
2160                     codec->block_align= 0;
2161                 break;
2162             case AVMEDIA_TYPE_VIDEO:
2163                 codec->pix_fmt = icodec->pix_fmt;
2164                 codec->width = icodec->width;
2165                 codec->height = icodec->height;
2166                 codec->has_b_frames = icodec->has_b_frames;
2167                 break;
2168             case AVMEDIA_TYPE_SUBTITLE:
2169                 codec->width = icodec->width;
2170                 codec->height = icodec->height;
2171                 break;
2172             default:
2173                 abort();
2174             }
2175         } else {
2176             switch(codec->codec_type) {
2177             case AVMEDIA_TYPE_AUDIO:
2178                 ost->fifo= av_fifo_alloc(1024);
2179                 if(!ost->fifo)
2180                     goto fail;
2181                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2182                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2183                 icodec->request_channels = codec->channels;
2184                 ist->decoding_needed = 1;
2185                 ost->encoding_needed = 1;
2186                 ost->resample_sample_fmt  = icodec->sample_fmt;
2187                 ost->resample_sample_rate = icodec->sample_rate;
2188                 ost->resample_channels    = icodec->channels;
2189                 break;
2190             case AVMEDIA_TYPE_VIDEO:
2191                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2192                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2193                     ffmpeg_exit(1);
2194                 }
2195                 ost->video_resample = (codec->width != icodec->width   ||
2196                                        codec->height != icodec->height ||
2197                         (codec->pix_fmt != icodec->pix_fmt));
2198                 if (ost->video_resample) {
2199 #if !CONFIG_AVFILTER
2200                     avcodec_get_frame_defaults(&ost->pict_tmp);
2201                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2202                                          codec->width, codec->height)) {
2203                         fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
2204                         ffmpeg_exit(1);
2205                     }
2206                     sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
2207                     ost->img_resample_ctx = sws_getContext(
2208                         icodec->width,
2209                         icodec->height,
2210                             icodec->pix_fmt,
2211                             codec->width,
2212                             codec->height,
2213                             codec->pix_fmt,
2214                             sws_flags, NULL, NULL, NULL);
2215                     if (ost->img_resample_ctx == NULL) {
2216                         fprintf(stderr, "Cannot get resampling context\n");
2217                         ffmpeg_exit(1);
2218                     }
2219
2220                     ost->original_height = icodec->height;
2221                     ost->original_width  = icodec->width;
2222 #endif
2223                     codec->bits_per_raw_sample= 0;
2224                 }
2225                 ost->resample_height = icodec->height;
2226                 ost->resample_width  = icodec->width;
2227                 ost->resample_pix_fmt= icodec->pix_fmt;
2228                 ost->encoding_needed = 1;
2229                 ist->decoding_needed = 1;
2230
2231 #if CONFIG_AVFILTER
2232                 if (configure_filters(ist, ost)) {
2233                     fprintf(stderr, "Error opening filters!\n");
2234                     exit(1);
2235                 }
2236 #endif
2237                 break;
2238             case AVMEDIA_TYPE_SUBTITLE:
2239                 ost->encoding_needed = 1;
2240                 ist->decoding_needed = 1;
2241                 break;
2242             default:
2243                 abort();
2244                 break;
2245             }
2246             /* two pass mode */
2247             if (ost->encoding_needed &&
2248                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2249                 char logfilename[1024];
2250                 FILE *f;
2251
2252                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2253                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2254                          i);
2255                 if (codec->flags & CODEC_FLAG_PASS1) {
2256                     f = fopen(logfilename, "wb");
2257                     if (!f) {
2258                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2259                         ffmpeg_exit(1);
2260                     }
2261                     ost->logfile = f;
2262                 } else {
2263                     char  *logbuffer;
2264                     size_t logbuffer_size;
2265                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2266                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2267                         ffmpeg_exit(1);
2268                     }
2269                     codec->stats_in = logbuffer;
2270                 }
2271             }
2272         }
2273         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2274             int size= codec->width * codec->height;
2275             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2276         }
2277     }
2278
2279     if (!bit_buffer)
2280         bit_buffer = av_malloc(bit_buffer_size);
2281     if (!bit_buffer) {
2282         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2283                 bit_buffer_size);
2284         ret = AVERROR(ENOMEM);
2285         goto fail;
2286     }
2287
2288     /* open each encoder */
2289     for(i=0;i<nb_ostreams;i++) {
2290         ost = ost_table[i];
2291         if (ost->encoding_needed) {
2292             AVCodec *codec = i < nb_output_codecs ? output_codecs[i] : NULL;
2293             AVCodecContext *dec = ist_table[ost->source_index]->st->codec;
2294             if (!codec)
2295                 codec = avcodec_find_encoder(ost->st->codec->codec_id);
2296             if (!codec) {
2297                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2298                          ost->st->codec->codec_id, ost->file_index, ost->index);
2299                 ret = AVERROR(EINVAL);
2300                 goto dump_format;
2301             }
2302             if (dec->subtitle_header) {
2303                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2304                 if (!ost->st->codec->subtitle_header) {
2305                     ret = AVERROR(ENOMEM);
2306                     goto dump_format;
2307                 }
2308                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2309                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2310             }
2311             if (avcodec_open(ost->st->codec, codec) < 0) {
2312                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2313                         ost->file_index, ost->index);
2314                 ret = AVERROR(EINVAL);
2315                 goto dump_format;
2316             }
2317             extra_size += ost->st->codec->extradata_size;
2318         }
2319     }
2320
2321     /* open each decoder */
2322     for(i=0;i<nb_istreams;i++) {
2323         ist = ist_table[i];
2324         if (ist->decoding_needed) {
2325             AVCodec *codec = i < nb_input_codecs ? input_codecs[i] : NULL;
2326             if (!codec)
2327                 codec = avcodec_find_decoder(ist->st->codec->codec_id);
2328             if (!codec) {
2329                 snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
2330                         ist->st->codec->codec_id, ist->file_index, ist->index);
2331                 ret = AVERROR(EINVAL);
2332                 goto dump_format;
2333             }
2334             if (avcodec_open(ist->st->codec, codec) < 0) {
2335                 snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
2336                         ist->file_index, ist->index);
2337                 ret = AVERROR(EINVAL);
2338                 goto dump_format;
2339             }
2340             //if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2341             //    ist->st->codec->flags |= CODEC_FLAG_REPEAT_FIELD;
2342         }
2343     }
2344
2345     /* init pts */
2346     for(i=0;i<nb_istreams;i++) {
2347         AVStream *st;
2348         ist = ist_table[i];
2349         st= ist->st;
2350         ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
2351         ist->next_pts = AV_NOPTS_VALUE;
2352         init_pts_correction(&ist->pts_ctx);
2353         ist->is_start = 1;
2354     }
2355
2356     /* set meta data information from input file if required */
2357     for (i=0;i<nb_meta_data_maps;i++) {
2358         AVFormatContext *files[2];
2359         AVMetadata      **meta[2];
2360         int j;
2361
2362 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
2363         if ((index) < 0 || (index) >= (nb_elems)) {\
2364             snprintf(error, sizeof(error), "Invalid %s index %d while processing metadata maps\n",\
2365                      (desc), (index));\
2366             ret = AVERROR(EINVAL);\
2367             goto dump_format;\
2368         }
2369
2370         int out_file_index = meta_data_maps[i][0].file;
2371         int in_file_index = meta_data_maps[i][1].file;
2372         if (in_file_index < 0 || out_file_index < 0)
2373             continue;
2374         METADATA_CHECK_INDEX(out_file_index, nb_output_files, "output file")
2375         METADATA_CHECK_INDEX(in_file_index, nb_input_files, "input file")
2376
2377         files[0] = output_files[out_file_index];
2378         files[1] = input_files[in_file_index];
2379
2380         for (j = 0; j < 2; j++) {
2381             AVMetaDataMap *map = &meta_data_maps[i][j];
2382
2383             switch (map->type) {
2384             case 'g':
2385                 meta[j] = &files[j]->metadata;
2386                 break;
2387             case 's':
2388                 METADATA_CHECK_INDEX(map->index, files[j]->nb_streams, "stream")
2389                 meta[j] = &files[j]->streams[map->index]->metadata;
2390                 break;
2391             case 'c':
2392                 METADATA_CHECK_INDEX(map->index, files[j]->nb_chapters, "chapter")
2393                 meta[j] = &files[j]->chapters[map->index]->metadata;
2394                 break;
2395             case 'p':
2396                 METADATA_CHECK_INDEX(map->index, files[j]->nb_programs, "program")
2397                 meta[j] = &files[j]->programs[map->index]->metadata;
2398                 break;
2399             }
2400         }
2401
2402         av_metadata_copy(meta[0], *meta[1], AV_METADATA_DONT_OVERWRITE);
2403     }
2404
2405     /* copy global metadata by default */
2406     if (metadata_global_autocopy) {
2407
2408         for (i = 0; i < nb_output_files; i++)
2409             av_metadata_copy(&output_files[i]->metadata, input_files[0]->metadata,
2410                              AV_METADATA_DONT_OVERWRITE);
2411     }
2412
2413     /* copy chapters according to chapter maps */
2414     for (i = 0; i < nb_chapter_maps; i++) {
2415         int infile  = chapter_maps[i].in_file;
2416         int outfile = chapter_maps[i].out_file;
2417
2418         if (infile < 0 || outfile < 0)
2419             continue;
2420         if (infile >= nb_input_files) {
2421             snprintf(error, sizeof(error), "Invalid input file index %d in chapter mapping.\n", infile);
2422             ret = AVERROR(EINVAL);
2423             goto dump_format;
2424         }
2425         if (outfile >= nb_output_files) {
2426             snprintf(error, sizeof(error), "Invalid output file index %d in chapter mapping.\n",outfile);
2427             ret = AVERROR(EINVAL);
2428             goto dump_format;
2429         }
2430         copy_chapters(infile, outfile);
2431     }
2432
2433     /* copy chapters from the first input file that has them*/
2434     if (!nb_chapter_maps)
2435         for (i = 0; i < nb_input_files; i++) {
2436             if (!input_files[i]->nb_chapters)
2437                 continue;
2438
2439             for (j = 0; j < nb_output_files; j++)
2440                 if ((ret = copy_chapters(i, j)) < 0)
2441                     goto dump_format;
2442             break;
2443         }
2444
2445     /* open files and write file headers */
2446     for(i=0;i<nb_output_files;i++) {
2447         os = output_files[i];
2448         if (av_write_header(os) < 0) {
2449             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2450             ret = AVERROR(EINVAL);
2451             goto dump_format;
2452         }
2453         if (strcmp(output_files[i]->oformat->name, "rtp")) {
2454             want_sdp = 0;
2455         }
2456     }
2457
2458  dump_format:
2459     /* dump the file output parameters - cannot be done before in case
2460        of stream copy */
2461     for(i=0;i<nb_output_files;i++) {
2462         av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2463     }
2464
2465     /* dump the stream mapping */
2466     if (verbose >= 0) {
2467         fprintf(stderr, "Stream mapping:\n");
2468         for(i=0;i<nb_ostreams;i++) {
2469             ost = ost_table[i];
2470             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2471                     ist_table[ost->source_index]->file_index,
2472                     ist_table[ost->source_index]->index,
2473                     ost->file_index,
2474                     ost->index);
2475             if (ost->sync_ist != ist_table[ost->source_index])
2476                 fprintf(stderr, " [sync #%d.%d]",
2477                         ost->sync_ist->file_index,
2478                         ost->sync_ist->index);
2479             fprintf(stderr, "\n");
2480         }
2481     }
2482
2483     if (ret) {
2484         fprintf(stderr, "%s\n", error);
2485         goto fail;
2486     }
2487
2488     if (want_sdp) {
2489         print_sdp(output_files, nb_output_files);
2490     }
2491
2492     if (!using_stdin && verbose >= 0) {
2493         fprintf(stderr, "Press [q] to stop encoding\n");
2494         url_set_interrupt_cb(decode_interrupt_cb);
2495     }
2496     term_init();
2497
2498     timer_start = av_gettime();
2499
2500     for(; received_sigterm == 0;) {
2501         int file_index, ist_index;
2502         AVPacket pkt;
2503         double ipts_min;
2504         double opts_min;
2505
2506     redo:
2507         ipts_min= 1e100;
2508         opts_min= 1e100;
2509         /* if 'q' pressed, exits */
2510         if (!using_stdin) {
2511             if (q_pressed)
2512                 break;
2513             /* read_key() returns 0 on EOF */
2514             key = read_key();
2515             if (key == 'q')
2516                 break;
2517         }
2518
2519         /* select the stream that we must read now by looking at the
2520            smallest output pts */
2521         file_index = -1;
2522         for(i=0;i<nb_ostreams;i++) {
2523             double ipts, opts;
2524             ost = ost_table[i];
2525             os = output_files[ost->file_index];
2526             ist = ist_table[ost->source_index];
2527             if(ist->is_past_recording_time || no_packet[ist->file_index])
2528                 continue;
2529                 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2530             ipts = (double)ist->pts;
2531             if (!file_table[ist->file_index].eof_reached){
2532                 if(ipts < ipts_min) {
2533                     ipts_min = ipts;
2534                     if(input_sync ) file_index = ist->file_index;
2535                 }
2536                 if(opts < opts_min) {
2537                     opts_min = opts;
2538                     if(!input_sync) file_index = ist->file_index;
2539                 }
2540             }
2541             if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
2542                 file_index= -1;
2543                 break;
2544             }
2545         }
2546         /* if none, if is finished */
2547         if (file_index < 0) {
2548             if(no_packet_count){
2549                 no_packet_count=0;
2550                 memset(no_packet, 0, sizeof(no_packet));
2551                 usleep(10000);
2552                 continue;
2553             }
2554             break;
2555         }
2556
2557         /* finish if limit size exhausted */
2558         if (limit_filesize != 0 && limit_filesize <= url_ftell(output_files[0]->pb))
2559             break;
2560
2561         /* read a frame from it and output it in the fifo */
2562         is = input_files[file_index];
2563         ret= av_read_frame(is, &pkt);
2564         if(ret == AVERROR(EAGAIN)){
2565             no_packet[file_index]=1;
2566             no_packet_count++;
2567             continue;
2568         }
2569         if (ret < 0) {
2570             file_table[file_index].eof_reached = 1;
2571             if (opt_shortest)
2572                 break;
2573             else
2574                 continue;
2575         }
2576
2577         no_packet_count=0;
2578         memset(no_packet, 0, sizeof(no_packet));
2579
2580         if (do_pkt_dump) {
2581             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2582                              is->streams[pkt.stream_index]);
2583         }
2584         /* the following test is needed in case new streams appear
2585            dynamically in stream : we ignore them */
2586         if (pkt.stream_index >= file_table[file_index].nb_streams)
2587             goto discard_packet;
2588         ist_index = file_table[file_index].ist_index + pkt.stream_index;
2589         ist = ist_table[ist_index];
2590         if (ist->discard)
2591             goto discard_packet;
2592
2593         if (pkt.dts != AV_NOPTS_VALUE)
2594             pkt.dts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2595         if (pkt.pts != AV_NOPTS_VALUE)
2596             pkt.pts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2597
2598         if (pkt.stream_index < nb_input_files_ts_scale[file_index]
2599             && input_files_ts_scale[file_index][pkt.stream_index]){
2600             if(pkt.pts != AV_NOPTS_VALUE)
2601                 pkt.pts *= input_files_ts_scale[file_index][pkt.stream_index];
2602             if(pkt.dts != AV_NOPTS_VALUE)
2603                 pkt.dts *= input_files_ts_scale[file_index][pkt.stream_index];
2604         }
2605
2606 //        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);
2607         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2608             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2609             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2610             int64_t delta= pkt_dts - ist->next_pts;
2611             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2612                 input_files_ts_offset[ist->file_index]-= delta;
2613                 if (verbose > 2)
2614                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n", delta, input_files_ts_offset[ist->file_index]);
2615                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2616                 if(pkt.pts != AV_NOPTS_VALUE)
2617                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2618             }
2619         }
2620
2621         /* finish if recording time exhausted */
2622         if (recording_time != INT64_MAX &&
2623             av_compare_ts(pkt.pts, ist->st->time_base, recording_time + start_time, (AVRational){1, 1000000}) >= 0) {
2624             ist->is_past_recording_time = 1;
2625             goto discard_packet;
2626         }
2627
2628         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->index, pkt.size);
2629         if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
2630
2631             if (verbose >= 0)
2632                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2633                         ist->file_index, ist->index);
2634             if (exit_on_error)
2635                 ffmpeg_exit(1);
2636             av_free_packet(&pkt);
2637             goto redo;
2638         }
2639
2640     discard_packet:
2641         av_free_packet(&pkt);
2642
2643         /* dump report by using the output first video and audio streams */
2644         print_report(output_files, ost_table, nb_ostreams, 0);
2645     }
2646
2647     /* at the end of stream, we must flush the decoder buffers */
2648     for(i=0;i<nb_istreams;i++) {
2649         ist = ist_table[i];
2650         if (ist->decoding_needed) {
2651             output_packet(ist, i, ost_table, nb_ostreams, NULL);
2652         }
2653     }
2654
2655     term_exit();
2656
2657     /* write the trailer if needed and close file */
2658     for(i=0;i<nb_output_files;i++) {
2659         os = output_files[i];
2660         av_write_trailer(os);
2661     }
2662
2663     /* dump report by using the first video and audio streams */
2664     print_report(output_files, ost_table, nb_ostreams, 1);
2665
2666     /* close each encoder */
2667     for(i=0;i<nb_ostreams;i++) {
2668         ost = ost_table[i];
2669         if (ost->encoding_needed) {
2670             av_freep(&ost->st->codec->stats_in);
2671             avcodec_close(ost->st->codec);
2672         }
2673     }
2674
2675     /* close each decoder */
2676     for(i=0;i<nb_istreams;i++) {
2677         ist = ist_table[i];
2678         if (ist->decoding_needed) {
2679             avcodec_close(ist->st->codec);
2680         }
2681     }
2682 #if CONFIG_AVFILTER
2683     avfilter_graph_free(&graph);
2684 #endif
2685
2686     /* finished ! */
2687     ret = 0;
2688
2689  fail:
2690     av_freep(&bit_buffer);
2691     av_free(file_table);
2692
2693     if (ist_table) {
2694         for(i=0;i<nb_istreams;i++) {
2695             ist = ist_table[i];
2696             av_free(ist);
2697         }
2698         av_free(ist_table);
2699     }
2700     if (ost_table) {
2701         for(i=0;i<nb_ostreams;i++) {
2702             ost = ost_table[i];
2703             if (ost) {
2704                 if (ost->st->stream_copy)
2705                     av_freep(&ost->st->codec->extradata);
2706                 if (ost->logfile) {
2707                     fclose(ost->logfile);
2708                     ost->logfile = NULL;
2709                 }
2710                 av_fifo_free(ost->fifo); /* works even if fifo is not
2711                                              initialized but set to zero */
2712                 av_freep(&ost->st->codec->subtitle_header);
2713                 av_free(ost->pict_tmp.data[0]);
2714                 av_free(ost->forced_kf_pts);
2715                 if (ost->video_resample)
2716                     sws_freeContext(ost->img_resample_ctx);
2717                 if (ost->resample)
2718                     audio_resample_close(ost->resample);
2719                 if (ost->reformat_ctx)
2720                     av_audio_convert_free(ost->reformat_ctx);
2721                 av_free(ost);
2722             }
2723         }
2724         av_free(ost_table);
2725     }
2726     return ret;
2727 }
2728
2729 static void opt_format(const char *arg)
2730 {
2731     last_asked_format = arg;
2732 }
2733
2734 static void opt_video_rc_override_string(const char *arg)
2735 {
2736     video_rc_override_string = arg;
2737 }
2738
2739 static int opt_me_threshold(const char *opt, const char *arg)
2740 {
2741     me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2742     return 0;
2743 }
2744
2745 static int opt_verbose(const char *opt, const char *arg)
2746 {
2747     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2748     return 0;
2749 }
2750
2751 static int opt_frame_rate(const char *opt, const char *arg)
2752 {
2753     if (av_parse_video_rate(&frame_rate, arg) < 0) {
2754         fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2755         ffmpeg_exit(1);
2756     }
2757     return 0;
2758 }
2759
2760 static int opt_bitrate(const char *opt, const char *arg)
2761 {
2762     int codec_type = opt[0]=='a' ? AVMEDIA_TYPE_AUDIO : AVMEDIA_TYPE_VIDEO;
2763
2764     opt_default(opt, arg);
2765
2766     if (av_get_int(avcodec_opts[codec_type], "b", NULL) < 1000)
2767         fprintf(stderr, "WARNING: The bitrate parameter is set too low. It takes bits/s as argument, not kbits/s\n");
2768
2769     return 0;
2770 }
2771
2772 static int opt_frame_crop(const char *opt, const char *arg)
2773 {
2774     fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
2775     return AVERROR(EINVAL);
2776 }
2777
2778 static void opt_frame_size(const char *arg)
2779 {
2780     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2781         fprintf(stderr, "Incorrect frame size\n");
2782         ffmpeg_exit(1);
2783     }
2784 }
2785
2786 static int opt_pad(const char *opt, const char *arg) {
2787     fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2788     return -1;
2789 }
2790
2791 static void opt_frame_pix_fmt(const char *arg)
2792 {
2793     if (strcmp(arg, "list")) {
2794         frame_pix_fmt = av_get_pix_fmt(arg);
2795         if (frame_pix_fmt == PIX_FMT_NONE) {
2796             fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2797             ffmpeg_exit(1);
2798         }
2799     } else {
2800         show_pix_fmts();
2801         ffmpeg_exit(0);
2802     }
2803 }
2804
2805 static void opt_frame_aspect_ratio(const char *arg)
2806 {
2807     int x = 0, y = 0;
2808     double ar = 0;
2809     const char *p;
2810     char *end;
2811
2812     p = strchr(arg, ':');
2813     if (p) {
2814         x = strtol(arg, &end, 10);
2815         if (end == p)
2816             y = strtol(end+1, &end, 10);
2817         if (x > 0 && y > 0)
2818             ar = (double)x / (double)y;
2819     } else
2820         ar = strtod(arg, NULL);
2821
2822     if (!ar) {
2823         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2824         ffmpeg_exit(1);
2825     }
2826     frame_aspect_ratio = ar;
2827 }
2828
2829 static int opt_metadata(const char *opt, const char *arg)
2830 {
2831     char *mid= strchr(arg, '=');
2832
2833     if(!mid){
2834         fprintf(stderr, "Missing =\n");
2835         ffmpeg_exit(1);
2836     }
2837     *mid++= 0;
2838
2839     av_metadata_set2(&metadata, arg, mid, 0);
2840
2841     return 0;
2842 }
2843
2844 static void opt_qscale(const char *arg)
2845 {
2846     video_qscale = atof(arg);
2847     if (video_qscale <= 0 ||
2848         video_qscale > 255) {
2849         fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2850         ffmpeg_exit(1);
2851     }
2852 }
2853
2854 static void opt_top_field_first(const char *arg)
2855 {
2856     top_field_first= atoi(arg);
2857 }
2858
2859 static int opt_thread_count(const char *opt, const char *arg)
2860 {
2861     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2862 #if !HAVE_THREADS
2863     if (verbose >= 0)
2864         fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2865 #endif
2866     return 0;
2867 }
2868
2869 static void opt_audio_sample_fmt(const char *arg)
2870 {
2871     if (strcmp(arg, "list")) {
2872         audio_sample_fmt = av_get_sample_fmt(arg);
2873         if (audio_sample_fmt == AV_SAMPLE_FMT_NONE) {
2874             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg);
2875             ffmpeg_exit(1);
2876         }
2877     } else {
2878         list_fmts(av_get_sample_fmt_string, AV_SAMPLE_FMT_NB);
2879         ffmpeg_exit(0);
2880     }
2881 }
2882
2883 static int opt_audio_rate(const char *opt, const char *arg)
2884 {
2885     audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2886     return 0;
2887 }
2888
2889 static int opt_audio_channels(const char *opt, const char *arg)
2890 {
2891     audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2892     return 0;
2893 }
2894
2895 static void opt_video_channel(const char *arg)
2896 {
2897     video_channel = strtol(arg, NULL, 0);
2898 }
2899
2900 static void opt_video_standard(const char *arg)
2901 {
2902     video_standard = av_strdup(arg);
2903 }
2904
2905 static void opt_codec(int *pstream_copy, char **pcodec_name,
2906                       int codec_type, const char *arg)
2907 {
2908     av_freep(pcodec_name);
2909     if (!strcmp(arg, "copy")) {
2910         *pstream_copy = 1;
2911     } else {
2912         *pcodec_name = av_strdup(arg);
2913     }
2914 }
2915
2916 static void opt_audio_codec(const char *arg)
2917 {
2918     opt_codec(&audio_stream_copy, &audio_codec_name, AVMEDIA_TYPE_AUDIO, arg);
2919 }
2920
2921 static void opt_video_codec(const char *arg)
2922 {
2923     opt_codec(&video_stream_copy, &video_codec_name, AVMEDIA_TYPE_VIDEO, arg);
2924 }
2925
2926 static void opt_subtitle_codec(const char *arg)
2927 {
2928     opt_codec(&subtitle_stream_copy, &subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, arg);
2929 }
2930
2931 static int opt_codec_tag(const char *opt, const char *arg)
2932 {
2933     char *tail;
2934     uint32_t *codec_tag;
2935
2936     codec_tag = !strcmp(opt, "atag") ? &audio_codec_tag :
2937                 !strcmp(opt, "vtag") ? &video_codec_tag :
2938                 !strcmp(opt, "stag") ? &subtitle_codec_tag : NULL;
2939     if (!codec_tag)
2940         return -1;
2941
2942     *codec_tag = strtol(arg, &tail, 0);
2943     if (!tail || *tail)
2944         *codec_tag = AV_RL32(arg);
2945
2946     return 0;
2947 }
2948
2949 static void opt_map(const char *arg)
2950 {
2951     AVStreamMap *m;
2952     char *p;
2953
2954     stream_maps = grow_array(stream_maps, sizeof(*stream_maps), &nb_stream_maps, nb_stream_maps + 1);
2955     m = &stream_maps[nb_stream_maps-1];
2956
2957     m->file_index = strtol(arg, &p, 0);
2958     if (*p)
2959         p++;
2960
2961     m->stream_index = strtol(p, &p, 0);
2962     if (*p) {
2963         p++;
2964         m->sync_file_index = strtol(p, &p, 0);
2965         if (*p)
2966             p++;
2967         m->sync_stream_index = strtol(p, &p, 0);
2968     } else {
2969         m->sync_file_index = m->file_index;
2970         m->sync_stream_index = m->stream_index;
2971     }
2972 }
2973
2974 static void parse_meta_type(char *arg, char *type, int *index, char **endptr)
2975 {
2976     *endptr = arg;
2977     if (*arg == ',') {
2978         *type = *(++arg);
2979         switch (*arg) {
2980         case 'g':
2981             break;
2982         case 's':
2983         case 'c':
2984         case 'p':
2985             *index = strtol(++arg, endptr, 0);
2986             break;
2987         default:
2988             fprintf(stderr, "Invalid metadata type %c.\n", *arg);
2989             ffmpeg_exit(1);
2990         }
2991     } else
2992         *type = 'g';
2993 }
2994
2995 static void opt_map_metadata(const char *arg)
2996 {
2997     AVMetaDataMap *m, *m1;
2998     char *p;
2999
3000     meta_data_maps = grow_array(meta_data_maps, sizeof(*meta_data_maps),
3001                                 &nb_meta_data_maps, nb_meta_data_maps + 1);
3002
3003     m = &meta_data_maps[nb_meta_data_maps - 1][0];
3004     m->file = strtol(arg, &p, 0);
3005     parse_meta_type(p, &m->type, &m->index, &p);
3006     if (*p)
3007         p++;
3008
3009     m1 = &meta_data_maps[nb_meta_data_maps - 1][1];
3010     m1->file = strtol(p, &p, 0);
3011     parse_meta_type(p, &m1->type, &m1->index, &p);
3012
3013     if (m->type == 'g' || m1->type == 'g')
3014         metadata_global_autocopy = 0;
3015     if (m->type == 's' || m1->type == 's')
3016         metadata_streams_autocopy = 0;
3017     if (m->type == 'c' || m1->type == 'c')
3018         metadata_chapters_autocopy = 0;
3019 }
3020
3021 static void opt_map_meta_data(const char *arg)
3022 {
3023     fprintf(stderr, "-map_meta_data is deprecated and will be removed soon. "
3024                     "Use -map_metadata instead.\n");
3025     opt_map_metadata(arg);
3026 }
3027
3028 static void opt_map_chapters(const char *arg)
3029 {
3030     AVChapterMap *c;
3031     char *p;
3032
3033     chapter_maps = grow_array(chapter_maps, sizeof(*chapter_maps), &nb_chapter_maps,
3034                               nb_chapter_maps + 1);
3035     c = &chapter_maps[nb_chapter_maps - 1];
3036     c->out_file = strtol(arg, &p, 0);
3037     if (*p)
3038         p++;
3039
3040     c->in_file = strtol(p, &p, 0);
3041 }
3042
3043 static void opt_input_ts_scale(const char *arg)
3044 {
3045     unsigned int stream;
3046     double scale;
3047     char *p;
3048
3049     stream = strtol(arg, &p, 0);
3050     if (*p)
3051         p++;
3052     scale= strtod(p, &p);
3053
3054     if(stream >= MAX_STREAMS)
3055         ffmpeg_exit(1);
3056
3057     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);
3058     input_files_ts_scale[nb_input_files][stream]= scale;
3059 }
3060
3061 static int opt_recording_time(const char *opt, const char *arg)
3062 {
3063     recording_time = parse_time_or_die(opt, arg, 1);
3064     return 0;
3065 }
3066
3067 static int opt_start_time(const char *opt, const char *arg)
3068 {
3069     start_time = parse_time_or_die(opt, arg, 1);
3070     return 0;
3071 }
3072
3073 static int opt_recording_timestamp(const char *opt, const char *arg)
3074 {
3075     recording_timestamp = parse_time_or_die(opt, arg, 0) / 1000000;
3076     return 0;
3077 }
3078
3079 static int opt_input_ts_offset(const char *opt, const char *arg)
3080 {
3081     input_ts_offset = parse_time_or_die(opt, arg, 1);
3082     return 0;
3083 }
3084
3085 static enum CodecID find_codec_or_die(const char *name, int type, int encoder, int strict)
3086 {
3087     const char *codec_string = encoder ? "encoder" : "decoder";
3088     AVCodec *codec;
3089
3090     if(!name)
3091         return CODEC_ID_NONE;
3092     codec = encoder ?
3093         avcodec_find_encoder_by_name(name) :
3094         avcodec_find_decoder_by_name(name);
3095     if(!codec) {
3096         fprintf(stderr, "Unknown %s '%s'\n", codec_string, name);
3097         ffmpeg_exit(1);
3098     }
3099     if(codec->type != type) {
3100         fprintf(stderr, "Invalid %s type '%s'\n", codec_string, name);
3101         ffmpeg_exit(1);
3102     }
3103     if(codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
3104        strict > FF_COMPLIANCE_EXPERIMENTAL) {
3105         fprintf(stderr, "%s '%s' is experimental and might produce bad "
3106                 "results.\nAdd '-strict experimental' if you want to use it.\n",
3107                 codec_string, codec->name);
3108         codec = encoder ?
3109             avcodec_find_encoder(codec->id) :
3110             avcodec_find_decoder(codec->id);
3111         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
3112             fprintf(stderr, "Or use the non experimental %s '%s'.\n",
3113                     codec_string, codec->name);
3114         ffmpeg_exit(1);
3115     }
3116     return codec->id;
3117 }
3118
3119 static void opt_input_file(const char *filename)
3120 {
3121     AVFormatContext *ic;
3122     AVFormatParameters params, *ap = &params;
3123     AVInputFormat *file_iformat = NULL;
3124     int err, i, ret, rfps, rfps_base;
3125     int64_t timestamp;
3126
3127     if (last_asked_format) {
3128         if (!(file_iformat = av_find_input_format(last_asked_format))) {
3129             fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
3130             ffmpeg_exit(1);
3131         }
3132         last_asked_format = NULL;
3133     }
3134
3135     if (!strcmp(filename, "-"))
3136         filename = "pipe:";
3137
3138     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3139                     !strcmp(filename, "/dev/stdin");
3140
3141     /* get default parameters from command line */
3142     ic = avformat_alloc_context();
3143     if (!ic) {
3144         print_error(filename, AVERROR(ENOMEM));
3145         ffmpeg_exit(1);
3146     }
3147
3148     memset(ap, 0, sizeof(*ap));
3149     ap->prealloced_context = 1;
3150     ap->sample_rate = audio_sample_rate;
3151     ap->channels = audio_channels;
3152     ap->time_base.den = frame_rate.num;
3153     ap->time_base.num = frame_rate.den;
3154     ap->width = frame_width;
3155     ap->height = frame_height;
3156     ap->pix_fmt = frame_pix_fmt;
3157    // ap->sample_fmt = audio_sample_fmt; //FIXME:not implemented in libavformat
3158     ap->channel = video_channel;
3159     ap->standard = video_standard;
3160
3161     set_context_opts(ic, avformat_opts, AV_OPT_FLAG_DECODING_PARAM, NULL);
3162
3163     ic->video_codec_id   =
3164         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0,
3165                           avcodec_opts[AVMEDIA_TYPE_VIDEO   ]->strict_std_compliance);
3166     ic->audio_codec_id   =
3167         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0,
3168                           avcodec_opts[AVMEDIA_TYPE_AUDIO   ]->strict_std_compliance);
3169     ic->subtitle_codec_id=
3170         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0,
3171                           avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->strict_std_compliance);
3172     ic->flags |= AVFMT_FLAG_NONBLOCK;
3173
3174     /* open the input file with generic libav function */
3175     err = av_open_input_file(&ic, filename, file_iformat, 0, ap);
3176     if (err < 0) {
3177         print_error(filename, err);
3178         ffmpeg_exit(1);
3179     }
3180     if(opt_programid) {
3181         int i, j;
3182         int found=0;
3183         for(i=0; i<ic->nb_streams; i++){
3184             ic->streams[i]->discard= AVDISCARD_ALL;
3185         }
3186         for(i=0; i<ic->nb_programs; i++){
3187             AVProgram *p= ic->programs[i];
3188             if(p->id != opt_programid){
3189                 p->discard = AVDISCARD_ALL;
3190             }else{
3191                 found=1;
3192                 for(j=0; j<p->nb_stream_indexes; j++){
3193                     ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
3194                 }
3195             }
3196         }
3197         if(!found){
3198             fprintf(stderr, "Specified program id not found\n");
3199             ffmpeg_exit(1);
3200         }
3201         opt_programid=0;
3202     }
3203
3204     ic->loop_input = loop_input;
3205
3206     /* If not enough info to get the stream parameters, we decode the
3207        first frames to get it. (used in mpeg case for example) */
3208     ret = av_find_stream_info(ic);
3209     if (ret < 0 && verbose >= 0) {
3210         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3211         av_close_input_file(ic);
3212         ffmpeg_exit(1);
3213     }
3214
3215     timestamp = start_time;
3216     /* add the stream start time */
3217     if (ic->start_time != AV_NOPTS_VALUE)
3218         timestamp += ic->start_time;
3219
3220     /* if seeking requested, we execute it */
3221     if (start_time != 0) {
3222         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3223         if (ret < 0) {
3224             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3225                     filename, (double)timestamp / AV_TIME_BASE);
3226         }
3227         /* reset seek info */
3228         start_time = 0;
3229     }
3230
3231     /* update the current parameters so that they match the one of the input stream */
3232     for(i=0;i<ic->nb_streams;i++) {
3233         AVStream *st = ic->streams[i];
3234         AVCodecContext *dec = st->codec;
3235         dec->thread_count = thread_count;
3236         input_codecs = grow_array(input_codecs, sizeof(*input_codecs), &nb_input_codecs, nb_input_codecs + 1);
3237         switch (dec->codec_type) {
3238         case AVMEDIA_TYPE_AUDIO:
3239             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(audio_codec_name);
3240             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]);
3241             //fprintf(stderr, "\nInput Audio channels: %d", dec->channels);
3242             channel_layout    = dec->channel_layout;
3243             audio_channels    = dec->channels;
3244             audio_sample_rate = dec->sample_rate;
3245             audio_sample_fmt  = dec->sample_fmt;
3246             if(audio_disable)
3247                 st->discard= AVDISCARD_ALL;
3248             /* Note that av_find_stream_info can add more streams, and we
3249              * currently have no chance of setting up lowres decoding
3250              * early enough for them. */
3251             if (dec->lowres)
3252                 audio_sample_rate >>= dec->lowres;
3253             break;
3254         case AVMEDIA_TYPE_VIDEO:
3255             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(video_codec_name);
3256             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]);
3257             frame_height = dec->height;
3258             frame_width  = dec->width;
3259             if(ic->streams[i]->sample_aspect_ratio.num)
3260                 frame_aspect_ratio=av_q2d(ic->streams[i]->sample_aspect_ratio);
3261             else
3262                 frame_aspect_ratio=av_q2d(dec->sample_aspect_ratio);
3263             frame_aspect_ratio *= (float) dec->width / dec->height;
3264             frame_pix_fmt = dec->pix_fmt;
3265             rfps      = ic->streams[i]->r_frame_rate.num;
3266             rfps_base = ic->streams[i]->r_frame_rate.den;
3267             if (dec->lowres) {
3268                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3269                 frame_height >>= dec->lowres;
3270                 frame_width  >>= dec->lowres;
3271                 dec->height = frame_height;
3272                 dec->width  = frame_width;
3273             }
3274             if(me_threshold)
3275                 dec->debug |= FF_DEBUG_MV;
3276
3277             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3278
3279                 if (verbose >= 0)
3280                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3281                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3282
3283                     (float)rfps / rfps_base, rfps, rfps_base);
3284             }
3285             /* update the current frame rate to match the stream frame rate */
3286             frame_rate.num = rfps;
3287             frame_rate.den = rfps_base;
3288
3289             if(video_disable)
3290                 st->discard= AVDISCARD_ALL;
3291             else if(video_discard)
3292                 st->discard= video_discard;
3293             break;
3294         case AVMEDIA_TYPE_DATA:
3295             break;
3296         case AVMEDIA_TYPE_SUBTITLE:
3297             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(subtitle_codec_name);
3298             if(subtitle_disable)
3299                 st->discard = AVDISCARD_ALL;
3300             break;
3301         case AVMEDIA_TYPE_ATTACHMENT:
3302         case AVMEDIA_TYPE_UNKNOWN:
3303             break;
3304         default:
3305             abort();
3306         }
3307     }
3308
3309     input_files[nb_input_files] = ic;
3310     input_files_ts_offset[nb_input_files] = input_ts_offset - (copy_ts ? 0 : timestamp);
3311     /* dump the file content */
3312     if (verbose >= 0)
3313         av_dump_format(ic, nb_input_files, filename, 0);
3314
3315     nb_input_files++;
3316
3317     video_channel = 0;
3318
3319     av_freep(&video_codec_name);
3320     av_freep(&audio_codec_name);
3321     av_freep(&subtitle_codec_name);
3322 }
3323
3324 static void check_audio_video_sub_inputs(int *has_video_ptr, int *has_audio_ptr,
3325                                          int *has_subtitle_ptr)
3326 {
3327     int has_video, has_audio, has_subtitle, i, j;
3328     AVFormatContext *ic;
3329
3330     has_video = 0;
3331     has_audio = 0;
3332     has_subtitle = 0;
3333     for(j=0;j<nb_input_files;j++) {
3334         ic = input_files[j];
3335         for(i=0;i<ic->nb_streams;i++) {
3336             AVCodecContext *enc = ic->streams[i]->codec;
3337             switch(enc->codec_type) {
3338             case AVMEDIA_TYPE_AUDIO:
3339                 has_audio = 1;
3340                 break;
3341             case AVMEDIA_TYPE_VIDEO:
3342                 has_video = 1;
3343                 break;
3344             case AVMEDIA_TYPE_SUBTITLE:
3345                 has_subtitle = 1;
3346                 break;
3347             case AVMEDIA_TYPE_DATA:
3348             case AVMEDIA_TYPE_ATTACHMENT:
3349             case AVMEDIA_TYPE_UNKNOWN:
3350                 break;
3351             default:
3352                 abort();
3353             }
3354         }
3355     }
3356     *has_video_ptr = has_video;
3357     *has_audio_ptr = has_audio;
3358     *has_subtitle_ptr = has_subtitle;
3359 }
3360
3361 static void new_video_stream(AVFormatContext *oc, int file_idx)
3362 {
3363     AVStream *st;
3364     AVOutputStream *ost;
3365     AVCodecContext *video_enc;
3366     enum CodecID codec_id = CODEC_ID_NONE;
3367     AVCodec *codec= NULL;
3368
3369     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3370     if (!st) {
3371         fprintf(stderr, "Could not alloc stream\n");
3372         ffmpeg_exit(1);
3373     }
3374     ost = new_output_stream(oc, file_idx);
3375
3376     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3377     if(!video_stream_copy){
3378         if (video_codec_name) {
3379             codec_id = find_codec_or_die(video_codec_name, AVMEDIA_TYPE_VIDEO, 1,
3380                                          avcodec_opts[AVMEDIA_TYPE_VIDEO]->strict_std_compliance);
3381             codec = avcodec_find_encoder_by_name(video_codec_name);
3382             output_codecs[nb_output_codecs-1] = codec;
3383         } else {
3384             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_VIDEO);
3385             codec = avcodec_find_encoder(codec_id);
3386         }
3387     }
3388
3389     avcodec_get_context_defaults3(st->codec, codec);
3390     ost->bitstream_filters = video_bitstream_filters;
3391     video_bitstream_filters= NULL;
3392
3393     st->codec->thread_count= thread_count;
3394
3395     video_enc = st->codec;
3396
3397     if(video_codec_tag)
3398         video_enc->codec_tag= video_codec_tag;
3399
3400     if(   (video_global_header&1)
3401        || (video_global_header==0 && (oc->oformat->flags & AVFMT_GLOBALHEADER))){
3402         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3403         avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3404     }
3405     if(video_global_header&2){
3406         video_enc->flags2 |= CODEC_FLAG2_LOCAL_HEADER;
3407         avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags2|= CODEC_FLAG2_LOCAL_HEADER;
3408     }
3409
3410     if (video_stream_copy) {
3411         st->stream_copy = 1;
3412         video_enc->codec_type = AVMEDIA_TYPE_VIDEO;
3413         video_enc->sample_aspect_ratio =
3414         st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3415     } else {
3416         const char *p;
3417         int i;
3418         AVRational fps= frame_rate.num ? frame_rate : (AVRational){25,1};
3419
3420         video_enc->codec_id = codec_id;
3421         set_context_opts(video_enc, avcodec_opts[AVMEDIA_TYPE_VIDEO], AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3422
3423         if (codec && codec->supported_framerates && !force_fps)
3424             fps = codec->supported_framerates[av_find_nearest_q_idx(fps, codec->supported_framerates)];
3425         video_enc->time_base.den = fps.num;
3426         video_enc->time_base.num = fps.den;
3427
3428         video_enc->width = frame_width;
3429         video_enc->height = frame_height;
3430         video_enc->sample_aspect_ratio = av_d2q(frame_aspect_ratio*video_enc->height/video_enc->width, 255);
3431         video_enc->pix_fmt = frame_pix_fmt;
3432         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3433
3434         choose_pixel_fmt(st, codec);
3435
3436         if (intra_only)
3437             video_enc->gop_size = 0;
3438         if (video_qscale || same_quality) {
3439             video_enc->flags |= CODEC_FLAG_QSCALE;
3440             video_enc->global_quality=
3441                 st->quality = FF_QP2LAMBDA * video_qscale;
3442         }
3443
3444         if(intra_matrix)
3445             video_enc->intra_matrix = intra_matrix;
3446         if(inter_matrix)
3447             video_enc->inter_matrix = inter_matrix;
3448
3449         p= video_rc_override_string;
3450         for(i=0; p; i++){
3451             int start, end, q;
3452             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3453             if(e!=3){
3454                 fprintf(stderr, "error parsing rc_override\n");
3455                 ffmpeg_exit(1);
3456             }
3457             video_enc->rc_override=
3458                 av_realloc(video_enc->rc_override,
3459                            sizeof(RcOverride)*(i+1));
3460             video_enc->rc_override[i].start_frame= start;
3461             video_enc->rc_override[i].end_frame  = end;
3462             if(q>0){
3463                 video_enc->rc_override[i].qscale= q;
3464                 video_enc->rc_override[i].quality_factor= 1.0;
3465             }
3466             else{
3467                 video_enc->rc_override[i].qscale= 0;
3468                 video_enc->rc_override[i].quality_factor= -q/100.0;
3469             }
3470             p= strchr(p, '/');
3471             if(p) p++;
3472         }
3473         video_enc->rc_override_count=i;
3474         if (!video_enc->rc_initial_buffer_occupancy)
3475             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3476         video_enc->me_threshold= me_threshold;
3477         video_enc->intra_dc_precision= intra_dc_precision - 8;
3478
3479         if (do_psnr)
3480             video_enc->flags|= CODEC_FLAG_PSNR;
3481
3482         /* two pass mode */
3483         if (do_pass) {
3484             if (do_pass == 1) {
3485                 video_enc->flags |= CODEC_FLAG_PASS1;
3486             } else {
3487                 video_enc->flags |= CODEC_FLAG_PASS2;
3488             }
3489         }
3490
3491         if (forced_key_frames)
3492             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3493     }
3494     if (video_language) {
3495         av_metadata_set2(&st->metadata, "language", video_language, 0);
3496         av_freep(&video_language);
3497     }
3498
3499     /* reset some key parameters */
3500     video_disable = 0;
3501     av_freep(&video_codec_name);
3502     av_freep(&forced_key_frames);
3503     video_stream_copy = 0;
3504     frame_pix_fmt = PIX_FMT_NONE;
3505 }
3506
3507 static void new_audio_stream(AVFormatContext *oc, int file_idx)
3508 {
3509     AVStream *st;
3510     AVOutputStream *ost;
3511     AVCodec *codec= NULL;
3512     AVCodecContext *audio_enc;
3513     enum CodecID codec_id = CODEC_ID_NONE;
3514
3515     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3516     if (!st) {
3517         fprintf(stderr, "Could not alloc stream\n");
3518         ffmpeg_exit(1);
3519     }
3520     ost = new_output_stream(oc, file_idx);
3521
3522     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3523     if(!audio_stream_copy){
3524         if (audio_codec_name) {
3525             codec_id = find_codec_or_die(audio_codec_name, AVMEDIA_TYPE_AUDIO, 1,
3526                                          avcodec_opts[AVMEDIA_TYPE_AUDIO]->strict_std_compliance);
3527             codec = avcodec_find_encoder_by_name(audio_codec_name);
3528             output_codecs[nb_output_codecs-1] = codec;
3529         } else {
3530             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_AUDIO);
3531             codec = avcodec_find_encoder(codec_id);
3532         }
3533     }
3534
3535     avcodec_get_context_defaults3(st->codec, codec);
3536
3537     ost->bitstream_filters = audio_bitstream_filters;
3538     audio_bitstream_filters= NULL;
3539
3540     st->codec->thread_count= thread_count;
3541
3542     audio_enc = st->codec;
3543     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3544
3545     if(audio_codec_tag)
3546         audio_enc->codec_tag= audio_codec_tag;
3547
3548     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3549         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3550         avcodec_opts[AVMEDIA_TYPE_AUDIO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3551     }
3552     if (audio_stream_copy) {
3553         st->stream_copy = 1;
3554         audio_enc->channels = audio_channels;
3555         audio_enc->sample_rate = audio_sample_rate;
3556     } else {
3557         audio_enc->codec_id = codec_id;
3558         set_context_opts(audio_enc, avcodec_opts[AVMEDIA_TYPE_AUDIO], AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3559
3560         if (audio_qscale > QSCALE_NONE) {
3561             audio_enc->flags |= CODEC_FLAG_QSCALE;
3562             audio_enc->global_quality = st->quality = FF_QP2LAMBDA * audio_qscale;
3563         }
3564         audio_enc->channels = audio_channels;
3565         audio_enc->sample_fmt = audio_sample_fmt;
3566         audio_enc->sample_rate = audio_sample_rate;
3567         audio_enc->channel_layout = channel_layout;
3568         if (av_get_channel_layout_nb_channels(channel_layout) != audio_channels)
3569             audio_enc->channel_layout = 0;
3570         choose_sample_fmt(st, codec);
3571         choose_sample_rate(st, codec);
3572     }
3573     audio_enc->time_base= (AVRational){1, audio_sample_rate};
3574     if (audio_language) {
3575         av_metadata_set2(&st->metadata, "language", audio_language, 0);
3576         av_freep(&audio_language);
3577     }
3578
3579     /* reset some key parameters */
3580     audio_disable = 0;
3581     av_freep(&audio_codec_name);
3582     audio_stream_copy = 0;
3583 }
3584
3585 static void new_subtitle_stream(AVFormatContext *oc, int file_idx)
3586 {
3587     AVStream *st;
3588     AVOutputStream *ost;
3589     AVCodec *codec=NULL;
3590     AVCodecContext *subtitle_enc;
3591     enum CodecID codec_id = CODEC_ID_NONE;
3592
3593     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3594     if (!st) {
3595         fprintf(stderr, "Could not alloc stream\n");
3596         ffmpeg_exit(1);
3597     }
3598     ost = new_output_stream(oc, file_idx);
3599     subtitle_enc = st->codec;
3600     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3601     if(!subtitle_stream_copy){
3602         if (subtitle_codec_name) {
3603             codec_id = find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 1,
3604                                          avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->strict_std_compliance);
3605             codec= output_codecs[nb_output_codecs-1] = avcodec_find_encoder_by_name(subtitle_codec_name);
3606         } else {
3607             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_SUBTITLE);
3608             codec = avcodec_find_encoder(codec_id);
3609         }
3610     }
3611     avcodec_get_context_defaults3(st->codec, codec);
3612
3613     ost->bitstream_filters = subtitle_bitstream_filters;
3614     subtitle_bitstream_filters= NULL;
3615
3616     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3617
3618     if(subtitle_codec_tag)
3619         subtitle_enc->codec_tag= subtitle_codec_tag;
3620
3621     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3622         subtitle_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3623         avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->flags |= CODEC_FLAG_GLOBAL_HEADER;
3624     }
3625     if (subtitle_stream_copy) {
3626         st->stream_copy = 1;
3627     } else {
3628         subtitle_enc->codec_id = codec_id;
3629         set_context_opts(avcodec_opts[AVMEDIA_TYPE_SUBTITLE], subtitle_enc, AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3630     }
3631
3632     if (subtitle_language) {
3633         av_metadata_set2(&st->metadata, "language", subtitle_language, 0);
3634         av_freep(&subtitle_language);
3635     }
3636
3637     subtitle_disable = 0;
3638     av_freep(&subtitle_codec_name);
3639     subtitle_stream_copy = 0;
3640 }
3641
3642 static int opt_new_stream(const char *opt, const char *arg)
3643 {
3644     AVFormatContext *oc;
3645     int file_idx = nb_output_files - 1;
3646     if (nb_output_files <= 0) {
3647         fprintf(stderr, "At least one output file must be specified\n");
3648         ffmpeg_exit(1);
3649     }
3650     oc = output_files[file_idx];
3651
3652     if      (!strcmp(opt, "newvideo"   )) new_video_stream   (oc, file_idx);
3653     else if (!strcmp(opt, "newaudio"   )) new_audio_stream   (oc, file_idx);
3654     else if (!strcmp(opt, "newsubtitle")) new_subtitle_stream(oc, file_idx);
3655     else av_assert0(0);
3656     return 0;
3657 }
3658
3659 /* arg format is "output-stream-index:streamid-value". */
3660 static int opt_streamid(const char *opt, const char *arg)
3661 {
3662     int idx;
3663     char *p;
3664     char idx_str[16];
3665
3666     strncpy(idx_str, arg, sizeof(idx_str));
3667     idx_str[sizeof(idx_str)-1] = '\0';
3668     p = strchr(idx_str, ':');
3669     if (!p) {
3670         fprintf(stderr,
3671                 "Invalid value '%s' for