matroskadec: add generic element length validation.
[ffmpeg.git] / ffmpeg.c
1 /*
2  * FFmpeg main
3  * Copyright (c) 2000-2003 Fabrice Bellard
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21
22 /* needed for usleep() */
23 #define _XOPEN_SOURCE 600
24
25 #include "config.h"
26 #include <ctype.h>
27 #include <string.h>
28 #include <math.h>
29 #include <stdlib.h>
30 #include <errno.h>
31 #include <signal.h>
32 #include <limits.h>
33 #include <unistd.h>
34 #include "libavformat/avformat.h"
35 #include "libavdevice/avdevice.h"
36 #include "libswscale/swscale.h"
37 #include "libavcodec/opt.h"
38 #include "libavcodec/audioconvert.h"
39 #include "libavcore/audioconvert.h"
40 #include "libavcore/parseutils.h"
41 #include "libavcore/samplefmt.h"
42 #include "libavutil/colorspace.h"
43 #include "libavutil/fifo.h"
44 #include "libavutil/intreadwrite.h"
45 #include "libavutil/pixdesc.h"
46 #include "libavutil/avstring.h"
47 #include "libavutil/libm.h"
48 #include "libavformat/os_support.h"
49
50 #if CONFIG_AVFILTER
51 # include "libavfilter/avfilter.h"
52 # include "libavfilter/avfiltergraph.h"
53 # include "libavfilter/vsrc_buffer.h"
54 #endif
55
56 #if HAVE_SYS_RESOURCE_H
57 #include <sys/types.h>
58 #include <sys/time.h>
59 #include <sys/resource.h>
60 #elif HAVE_GETPROCESSTIMES
61 #include <windows.h>
62 #endif
63 #if HAVE_GETPROCESSMEMORYINFO
64 #include <windows.h>
65 #include <psapi.h>
66 #endif
67
68 #if HAVE_SYS_SELECT_H
69 #include <sys/select.h>
70 #endif
71
72 #if HAVE_TERMIOS_H
73 #include <fcntl.h>
74 #include <sys/ioctl.h>
75 #include <sys/time.h>
76 #include <termios.h>
77 #elif HAVE_CONIO_H
78 #include <conio.h>
79 #endif
80 #include <time.h>
81
82 #include "cmdutils.h"
83
84 #include "libavutil/avassert.h"
85
86 const char program_name[] = "FFmpeg";
87 const int program_birth_year = 2000;
88
89 /* select an input stream for an output stream */
90 typedef struct AVStreamMap {
91     int file_index;
92     int stream_index;
93     int sync_file_index;
94     int sync_stream_index;
95 } AVStreamMap;
96
97 /**
98  * select an input file for an output file
99  */
100 typedef struct AVMetaDataMap {
101     int  file;      //< file index
102     char type;      //< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
103     int  index;     //< stream/chapter/program number
104 } AVMetaDataMap;
105
106 typedef struct AVChapterMap {
107     int in_file;
108     int out_file;
109 } AVChapterMap;
110
111 static const OptionDef options[];
112
113 #define MAX_FILES 100
114 #if !FF_API_MAX_STREAMS
115 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
116 #endif
117
118 static const char *last_asked_format = NULL;
119 static AVFormatContext *input_files[MAX_FILES];
120 static int64_t input_files_ts_offset[MAX_FILES];
121 static double *input_files_ts_scale[MAX_FILES] = {NULL};
122 static AVCodec **input_codecs = NULL;
123 static int nb_input_files = 0;
124 static int nb_input_codecs = 0;
125 static int nb_input_files_ts_scale[MAX_FILES] = {0};
126
127 static AVFormatContext *output_files[MAX_FILES];
128 static AVCodec **output_codecs = NULL;
129 static int nb_output_files = 0;
130 static int nb_output_codecs = 0;
131
132 static AVStreamMap *stream_maps = NULL;
133 static int nb_stream_maps;
134
135 /* first item specifies output metadata, second is input */
136 static AVMetaDataMap (*meta_data_maps)[2] = NULL;
137 static int nb_meta_data_maps;
138 static int metadata_global_autocopy   = 1;
139 static int metadata_streams_autocopy  = 1;
140 static int metadata_chapters_autocopy = 1;
141
142 static AVChapterMap *chapter_maps = NULL;
143 static int nb_chapter_maps;
144
145 /* indexed by output file stream index */
146 static int *streamid_map = NULL;
147 static int nb_streamid_map = 0;
148
149 static int frame_width  = 0;
150 static int frame_height = 0;
151 static float frame_aspect_ratio = 0;
152 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
153 static enum AVSampleFormat audio_sample_fmt = AV_SAMPLE_FMT_NONE;
154 static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
155 static AVRational frame_rate;
156 static float video_qscale = 0;
157 static uint16_t *intra_matrix = NULL;
158 static uint16_t *inter_matrix = NULL;
159 static const char *video_rc_override_string=NULL;
160 static int video_disable = 0;
161 static int video_discard = 0;
162 static char *video_codec_name = NULL;
163 static unsigned int video_codec_tag = 0;
164 static char *video_language = NULL;
165 static int same_quality = 0;
166 static int do_deinterlace = 0;
167 static int top_field_first = -1;
168 static int me_threshold = 0;
169 static int intra_dc_precision = 8;
170 static int loop_input = 0;
171 static int loop_output = AVFMT_NOOUTPUTLOOP;
172 static int qp_hist = 0;
173 #if CONFIG_AVFILTER
174 static char *vfilters = NULL;
175 static AVFilterGraph *graph = NULL;
176 #endif
177
178 static int intra_only = 0;
179 static int audio_sample_rate = 44100;
180 static int64_t channel_layout = 0;
181 #define QSCALE_NONE -99999
182 static float audio_qscale = QSCALE_NONE;
183 static int audio_disable = 0;
184 static int audio_channels = 1;
185 static char  *audio_codec_name = NULL;
186 static unsigned int audio_codec_tag = 0;
187 static char *audio_language = NULL;
188
189 static int subtitle_disable = 0;
190 static char *subtitle_codec_name = NULL;
191 static char *subtitle_language = NULL;
192 static unsigned int subtitle_codec_tag = 0;
193
194 static float mux_preload= 0.5;
195 static float mux_max_delay= 0.7;
196
197 static int64_t recording_time = INT64_MAX;
198 static int64_t start_time = 0;
199 static int64_t recording_timestamp = 0;
200 static int64_t input_ts_offset = 0;
201 static int file_overwrite = 0;
202 static AVMetadata *metadata;
203 static int do_benchmark = 0;
204 static int do_hex_dump = 0;
205 static int do_pkt_dump = 0;
206 static int do_psnr = 0;
207 static int do_pass = 0;
208 static char *pass_logfilename_prefix = NULL;
209 static int audio_stream_copy = 0;
210 static int video_stream_copy = 0;
211 static int subtitle_stream_copy = 0;
212 static int video_sync_method= -1;
213 static int audio_sync_method= 0;
214 static float audio_drift_threshold= 0.1;
215 static int copy_ts= 0;
216 static int copy_tb;
217 static int opt_shortest = 0;
218 static int video_global_header = 0;
219 static char *vstats_filename;
220 static FILE *vstats_file;
221 static int opt_programid = 0;
222 static int copy_initial_nonkeyframes = 0;
223
224 static int rate_emu = 0;
225
226 static int  video_channel = 0;
227 static char *video_standard;
228
229 static int audio_volume = 256;
230
231 static int exit_on_error = 0;
232 static int using_stdin = 0;
233 static int verbose = 1;
234 static int thread_count= 1;
235 static int q_pressed = 0;
236 static int64_t video_size = 0;
237 static int64_t audio_size = 0;
238 static int64_t extra_size = 0;
239 static int nb_frames_dup = 0;
240 static int nb_frames_drop = 0;
241 static int input_sync;
242 static uint64_t limit_filesize = 0;
243 static int force_fps = 0;
244 static char *forced_key_frames = NULL;
245
246 static float dts_delta_threshold = 10;
247
248 static unsigned int sws_flags = SWS_BICUBIC;
249
250 static int64_t timer_start;
251
252 static uint8_t *audio_buf;
253 static uint8_t *audio_out;
254 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
255
256 static short *samples;
257
258 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
259 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
260 static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL;
261
262 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
263
264 struct AVInputStream;
265
266 typedef struct AVOutputStream {
267     int file_index;          /* file index */
268     int index;               /* stream index in the output file */
269     int source_index;        /* AVInputStream index */
270     AVStream *st;            /* stream in the output file */
271     int encoding_needed;     /* true if encoding needed for this stream */
272     int frame_number;
273     /* input pts and corresponding output pts
274        for A/V sync */
275     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
276     struct AVInputStream *sync_ist; /* input stream to sync against */
277     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
278     AVBitStreamFilterContext *bitstream_filters;
279     /* video only */
280     int video_resample;
281     AVFrame pict_tmp;      /* temporary image for resampling */
282     struct SwsContext *img_resample_ctx; /* for image resampling */
283     int resample_height;
284     int resample_width;
285     int resample_pix_fmt;
286
287     /* full frame size of first frame */
288     int original_height;
289     int original_width;
290
291     /* forced key frames */
292     int64_t *forced_kf_pts;
293     int forced_kf_count;
294     int forced_kf_index;
295
296     /* audio only */
297     int audio_resample;
298     ReSampleContext *resample; /* for audio resampling */
299     int resample_sample_fmt;
300     int resample_channels;
301     int resample_sample_rate;
302     int reformat_pair;
303     AVAudioConvert *reformat_ctx;
304     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
305     FILE *logfile;
306 } AVOutputStream;
307
308 static AVOutputStream **output_streams_for_file[MAX_FILES] = { NULL };
309 static int nb_output_streams_for_file[MAX_FILES] = { 0 };
310
311 typedef struct AVInputStream {
312     int file_index;
313     int index;
314     AVStream *st;
315     int discard;             /* true if stream data should be discarded */
316     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
317     int64_t sample_index;      /* current sample */
318
319     int64_t       start;     /* time when read started */
320     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
321                                 is not defined */
322     int64_t       pts;       /* current pts */
323     PtsCorrectionContext pts_ctx;
324     int is_start;            /* is 1 at the start and after a discontinuity */
325     int showed_multi_packet_warning;
326     int is_past_recording_time;
327 #if CONFIG_AVFILTER
328     AVFilterContext *output_video_filter;
329     AVFilterContext *input_video_filter;
330     AVFrame *filter_frame;
331     int has_filter_frame;
332     AVFilterBufferRef *picref;
333 #endif
334 } AVInputStream;
335
336 typedef struct AVInputFile {
337     int eof_reached;      /* true if eof reached */
338     int ist_index;        /* index of first stream in ist_table */
339     int buffer_size;      /* current total buffer size */
340     int nb_streams;       /* nb streams we are aware of */
341 } AVInputFile;
342
343 #if HAVE_TERMIOS_H
344
345 /* init terminal so that we can grab keys */
346 static struct termios oldtty;
347 #endif
348
349 #if CONFIG_AVFILTER
350
351 static int configure_filters(AVInputStream *ist, AVOutputStream *ost)
352 {
353     AVFilterContext *last_filter, *filter;
354     /** filter graph containing all filters including input & output */
355     AVCodecContext *codec = ost->st->codec;
356     AVCodecContext *icodec = ist->st->codec;
357     FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
358     char args[255];
359     int ret;
360
361     graph = avfilter_graph_alloc();
362
363     snprintf(args, 255, "%d:%d:%d:%d:%d", ist->st->codec->width,
364              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE);
365     ret = avfilter_graph_create_filter(&ist->input_video_filter, avfilter_get_by_name("buffer"),
366                                        "src", args, NULL, graph);
367     if (ret < 0)
368         return ret;
369     ret = avfilter_graph_create_filter(&ist->output_video_filter, &ffsink,
370                                        "out", NULL, &ffsink_ctx, graph);
371     if (ret < 0)
372         return ret;
373     last_filter = ist->input_video_filter;
374
375     if (codec->width  != icodec->width || codec->height != icodec->height) {
376         snprintf(args, 255, "%d:%d:flags=0x%X",
377                  codec->width,
378                  codec->height,
379                  (int)av_get_int(sws_opts, "sws_flags", NULL));
380         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
381                                                 NULL, args, NULL, graph)) < 0)
382             return ret;
383         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
384             return ret;
385         last_filter = filter;
386     }
387
388     snprintf(args, sizeof(args), "flags=0x%X", (int)av_get_int(sws_opts, "sws_flags", NULL));
389     graph->scale_sws_opts = av_strdup(args);
390
391     if (vfilters) {
392         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
393         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
394
395         outputs->name    = av_strdup("in");
396         outputs->filter_ctx = last_filter;
397         outputs->pad_idx = 0;
398         outputs->next    = NULL;
399
400         inputs->name    = av_strdup("out");
401         inputs->filter_ctx = ist->output_video_filter;
402         inputs->pad_idx = 0;
403         inputs->next    = NULL;
404
405         if ((ret = avfilter_graph_parse(graph, vfilters, inputs, outputs, NULL)) < 0)
406             return ret;
407         av_freep(&vfilters);
408     } else {
409         if ((ret = avfilter_link(last_filter, 0, ist->output_video_filter, 0)) < 0)
410             return ret;
411     }
412
413     if ((ret = avfilter_graph_config(graph, NULL)) < 0)
414         return ret;
415
416     codec->width  = ist->output_video_filter->inputs[0]->w;
417     codec->height = ist->output_video_filter->inputs[0]->h;
418
419     return 0;
420 }
421 #endif /* CONFIG_AVFILTER */
422
423 static void term_exit(void)
424 {
425     av_log(NULL, AV_LOG_QUIET, "");
426 #if HAVE_TERMIOS_H
427     tcsetattr (0, TCSANOW, &oldtty);
428 #endif
429 }
430
431 static volatile int received_sigterm = 0;
432
433 static void
434 sigterm_handler(int sig)
435 {
436     received_sigterm = sig;
437     term_exit();
438 }
439
440 static void term_init(void)
441 {
442 #if HAVE_TERMIOS_H
443     struct termios tty;
444
445     tcgetattr (0, &tty);
446     oldtty = tty;
447     atexit(term_exit);
448
449     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
450                           |INLCR|IGNCR|ICRNL|IXON);
451     tty.c_oflag |= OPOST;
452     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
453     tty.c_cflag &= ~(CSIZE|PARENB);
454     tty.c_cflag |= CS8;
455     tty.c_cc[VMIN] = 1;
456     tty.c_cc[VTIME] = 0;
457
458     tcsetattr (0, TCSANOW, &tty);
459     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
460 #endif
461
462     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
463     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
464 #ifdef SIGXCPU
465     signal(SIGXCPU, sigterm_handler);
466 #endif
467 }
468
469 /* read a key without blocking */
470 static int read_key(void)
471 {
472 #if HAVE_TERMIOS_H
473     int n = 1;
474     unsigned char ch;
475     struct timeval tv;
476     fd_set rfds;
477
478     FD_ZERO(&rfds);
479     FD_SET(0, &rfds);
480     tv.tv_sec = 0;
481     tv.tv_usec = 0;
482     n = select(1, &rfds, NULL, NULL, &tv);
483     if (n > 0) {
484         n = read(0, &ch, 1);
485         if (n == 1)
486             return ch;
487
488         return n;
489     }
490 #elif HAVE_CONIO_H
491     if(kbhit())
492         return(getch());
493 #endif
494     return -1;
495 }
496
497 static int decode_interrupt_cb(void)
498 {
499     return q_pressed || (q_pressed = read_key() == 'q');
500 }
501
502 static int ffmpeg_exit(int ret)
503 {
504     int i;
505
506     /* close files */
507     for(i=0;i<nb_output_files;i++) {
508         AVFormatContext *s = output_files[i];
509         int j;
510         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
511             url_fclose(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->thread_count)
702             st->codec->thread_count = 1;
703         if(st->codec->thread_count>1)
704             avcodec_thread_init(st->codec, st->codec->thread_count);
705
706         if(st->codec->flags & CODEC_FLAG_BITEXACT)
707             nopts = 1;
708
709         new_output_stream(s, nb_output_files);
710     }
711
712     if (!nopts)
713         s->timestamp = av_gettime();
714
715     av_close_input_file(ic);
716     return 0;
717 }
718
719 static double
720 get_sync_ipts(const AVOutputStream *ost)
721 {
722     const AVInputStream *ist = ost->sync_ist;
723     return (double)(ist->pts - start_time)/AV_TIME_BASE;
724 }
725
726 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
727     int ret;
728
729     while(bsfc){
730         AVPacket new_pkt= *pkt;
731         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
732                                           &new_pkt.data, &new_pkt.size,
733                                           pkt->data, pkt->size,
734                                           pkt->flags & AV_PKT_FLAG_KEY);
735         if(a>0){
736             av_free_packet(pkt);
737             new_pkt.destruct= av_destruct_packet;
738         } else if(a<0){
739             fprintf(stderr, "%s failed for stream %d, codec %s",
740                     bsfc->filter->name, pkt->stream_index,
741                     avctx->codec ? avctx->codec->name : "copy");
742             print_error("", a);
743             if (exit_on_error)
744                 ffmpeg_exit(1);
745         }
746         *pkt= new_pkt;
747
748         bsfc= bsfc->next;
749     }
750
751     ret= av_interleaved_write_frame(s, pkt);
752     if(ret < 0){
753         print_error("av_interleaved_write_frame()", ret);
754         ffmpeg_exit(1);
755     }
756 }
757
758 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
759
760 static void do_audio_out(AVFormatContext *s,
761                          AVOutputStream *ost,
762                          AVInputStream *ist,
763                          unsigned char *buf, int size)
764 {
765     uint8_t *buftmp;
766     int64_t audio_out_size, audio_buf_size;
767     int64_t allocated_for_size= size;
768
769     int size_out, frame_bytes, ret, resample_changed;
770     AVCodecContext *enc= ost->st->codec;
771     AVCodecContext *dec= ist->st->codec;
772     int osize= av_get_bits_per_sample_fmt(enc->sample_fmt)/8;
773     int isize= av_get_bits_per_sample_fmt(dec->sample_fmt)/8;
774     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
775
776 need_realloc:
777     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
778     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
779     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
780     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
781     audio_buf_size*= osize*enc->channels;
782
783     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
784     if(coded_bps > 8*osize)
785         audio_out_size= audio_out_size * coded_bps / (8*osize);
786     audio_out_size += FF_MIN_BUFFER_SIZE;
787
788     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
789         fprintf(stderr, "Buffer sizes too large\n");
790         ffmpeg_exit(1);
791     }
792
793     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
794     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
795     if (!audio_buf || !audio_out){
796         fprintf(stderr, "Out of memory in do_audio_out\n");
797         ffmpeg_exit(1);
798     }
799
800     if (enc->channels != dec->channels)
801         ost->audio_resample = 1;
802
803     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
804                        ost->resample_channels    != dec->channels   ||
805                        ost->resample_sample_rate != dec->sample_rate;
806
807     if ((ost->audio_resample && !ost->resample) || resample_changed) {
808         if (resample_changed) {
809             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",
810                    ist->file_index, ist->index,
811                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
812                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
813             ost->resample_sample_fmt  = dec->sample_fmt;
814             ost->resample_channels    = dec->channels;
815             ost->resample_sample_rate = dec->sample_rate;
816             if (ost->resample)
817                 audio_resample_close(ost->resample);
818         }
819         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
820         if (audio_sync_method <= 1 &&
821             ost->resample_sample_fmt  == enc->sample_fmt &&
822             ost->resample_channels    == enc->channels   &&
823             ost->resample_sample_rate == enc->sample_rate) {
824             ost->resample = NULL;
825             ost->audio_resample = 0;
826         } else {
827             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
828                 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
829             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
830                                                    enc->sample_rate, dec->sample_rate,
831                                                    enc->sample_fmt,  dec->sample_fmt,
832                                                    16, 10, 0, 0.8);
833             if (!ost->resample) {
834                 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
835                         dec->channels, dec->sample_rate,
836                         enc->channels, enc->sample_rate);
837                 ffmpeg_exit(1);
838             }
839         }
840     }
841
842 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
843     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
844         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
845         if (ost->reformat_ctx)
846             av_audio_convert_free(ost->reformat_ctx);
847         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
848                                                    dec->sample_fmt, 1, NULL, 0);
849         if (!ost->reformat_ctx) {
850             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
851                 av_get_sample_fmt_name(dec->sample_fmt),
852                 av_get_sample_fmt_name(enc->sample_fmt));
853             ffmpeg_exit(1);
854         }
855         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
856     }
857
858     if(audio_sync_method){
859         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
860                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
861         double idelta= delta*dec->sample_rate / enc->sample_rate;
862         int byte_delta= ((int)idelta)*2*dec->channels;
863
864         //FIXME resample delay
865         if(fabs(delta) > 50){
866             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
867                 if(byte_delta < 0){
868                     byte_delta= FFMAX(byte_delta, -size);
869                     size += byte_delta;
870                     buf  -= byte_delta;
871                     if(verbose > 2)
872                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
873                     if(!size)
874                         return;
875                     ist->is_start=0;
876                 }else{
877                     static uint8_t *input_tmp= NULL;
878                     input_tmp= av_realloc(input_tmp, byte_delta + size);
879
880                     if(byte_delta > allocated_for_size - size){
881                         allocated_for_size= byte_delta + (int64_t)size;
882                         goto need_realloc;
883                     }
884                     ist->is_start=0;
885
886                     memset(input_tmp, 0, byte_delta);
887                     memcpy(input_tmp + byte_delta, buf, size);
888                     buf= input_tmp;
889                     size += byte_delta;
890                     if(verbose > 2)
891                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
892                 }
893             }else if(audio_sync_method>1){
894                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
895                 av_assert0(ost->audio_resample);
896                 if(verbose > 2)
897                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
898 //                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));
899                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
900             }
901         }
902     }else
903         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
904                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
905
906     if (ost->audio_resample) {
907         buftmp = audio_buf;
908         size_out = audio_resample(ost->resample,
909                                   (short *)buftmp, (short *)buf,
910                                   size / (dec->channels * isize));
911         size_out = size_out * enc->channels * osize;
912     } else {
913         buftmp = buf;
914         size_out = size;
915     }
916
917     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
918         const void *ibuf[6]= {buftmp};
919         void *obuf[6]= {audio_buf};
920         int istride[6]= {isize};
921         int ostride[6]= {osize};
922         int len= size_out/istride[0];
923         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
924             printf("av_audio_convert() failed\n");
925             if (exit_on_error)
926                 ffmpeg_exit(1);
927             return;
928         }
929         buftmp = audio_buf;
930         size_out = len*osize;
931     }
932
933     /* now encode as many frames as possible */
934     if (enc->frame_size > 1) {
935         /* output resampled raw samples */
936         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
937             fprintf(stderr, "av_fifo_realloc2() failed\n");
938             ffmpeg_exit(1);
939         }
940         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
941
942         frame_bytes = enc->frame_size * osize * enc->channels;
943
944         while (av_fifo_size(ost->fifo) >= frame_bytes) {
945             AVPacket pkt;
946             av_init_packet(&pkt);
947
948             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
949
950             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
951
952             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
953                                        (short *)audio_buf);
954             if (ret < 0) {
955                 fprintf(stderr, "Audio encoding failed\n");
956                 ffmpeg_exit(1);
957             }
958             audio_size += ret;
959             pkt.stream_index= ost->index;
960             pkt.data= audio_out;
961             pkt.size= ret;
962             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
963                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
964             pkt.flags |= AV_PKT_FLAG_KEY;
965             write_frame(s, &pkt, enc, ost->bitstream_filters);
966
967             ost->sync_opts += enc->frame_size;
968         }
969     } else {
970         AVPacket pkt;
971         av_init_packet(&pkt);
972
973         ost->sync_opts += size_out / (osize * enc->channels);
974
975         /* output a pcm frame */
976         /* determine the size of the coded buffer */
977         size_out /= osize;
978         if (coded_bps)
979             size_out = size_out*coded_bps/8;
980
981         if(size_out > audio_out_size){
982             fprintf(stderr, "Internal error, buffer size too small\n");
983             ffmpeg_exit(1);
984         }
985
986         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
987         ret = avcodec_encode_audio(enc, audio_out, size_out,
988                                    (short *)buftmp);
989         if (ret < 0) {
990             fprintf(stderr, "Audio encoding failed\n");
991             ffmpeg_exit(1);
992         }
993         audio_size += ret;
994         pkt.stream_index= ost->index;
995         pkt.data= audio_out;
996         pkt.size= ret;
997         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
998             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
999         pkt.flags |= AV_PKT_FLAG_KEY;
1000         write_frame(s, &pkt, enc, ost->bitstream_filters);
1001     }
1002 }
1003
1004 static void pre_process_video_frame(AVInputStream *ist, AVPicture *picture, void **bufp)
1005 {
1006     AVCodecContext *dec;
1007     AVPicture *picture2;
1008     AVPicture picture_tmp;
1009     uint8_t *buf = 0;
1010
1011     dec = ist->st->codec;
1012
1013     /* deinterlace : must be done before any resize */
1014     if (do_deinterlace) {
1015         int size;
1016
1017         /* create temporary picture */
1018         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1019         buf = av_malloc(size);
1020         if (!buf)
1021             return;
1022
1023         picture2 = &picture_tmp;
1024         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1025
1026         if(avpicture_deinterlace(picture2, picture,
1027                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1028             /* if error, do not deinterlace */
1029             fprintf(stderr, "Deinterlacing failed\n");
1030             av_free(buf);
1031             buf = NULL;
1032             picture2 = picture;
1033         }
1034     } else {
1035         picture2 = picture;
1036     }
1037
1038     if (picture != picture2)
1039         *picture = *picture2;
1040     *bufp = buf;
1041 }
1042
1043 /* we begin to correct av delay at this threshold */
1044 #define AV_DELAY_MAX 0.100
1045
1046 static void do_subtitle_out(AVFormatContext *s,
1047                             AVOutputStream *ost,
1048                             AVInputStream *ist,
1049                             AVSubtitle *sub,
1050                             int64_t pts)
1051 {
1052     static uint8_t *subtitle_out = NULL;
1053     int subtitle_out_max_size = 1024 * 1024;
1054     int subtitle_out_size, nb, i;
1055     AVCodecContext *enc;
1056     AVPacket pkt;
1057
1058     if (pts == AV_NOPTS_VALUE) {
1059         fprintf(stderr, "Subtitle packets must have a pts\n");
1060         if (exit_on_error)
1061             ffmpeg_exit(1);
1062         return;
1063     }
1064
1065     enc = ost->st->codec;
1066
1067     if (!subtitle_out) {
1068         subtitle_out = av_malloc(subtitle_out_max_size);
1069     }
1070
1071     /* Note: DVB subtitle need one packet to draw them and one other
1072        packet to clear them */
1073     /* XXX: signal it in the codec context ? */
1074     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1075         nb = 2;
1076     else
1077         nb = 1;
1078
1079     for(i = 0; i < nb; i++) {
1080         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1081         // start_display_time is required to be 0
1082         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1083         sub->end_display_time -= sub->start_display_time;
1084         sub->start_display_time = 0;
1085         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1086                                                     subtitle_out_max_size, sub);
1087         if (subtitle_out_size < 0) {
1088             fprintf(stderr, "Subtitle encoding failed\n");
1089             ffmpeg_exit(1);
1090         }
1091
1092         av_init_packet(&pkt);
1093         pkt.stream_index = ost->index;
1094         pkt.data = subtitle_out;
1095         pkt.size = subtitle_out_size;
1096         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1097         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1098             /* XXX: the pts correction is handled here. Maybe handling
1099                it in the codec would be better */
1100             if (i == 0)
1101                 pkt.pts += 90 * sub->start_display_time;
1102             else
1103                 pkt.pts += 90 * sub->end_display_time;
1104         }
1105         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1106     }
1107 }
1108
1109 static int bit_buffer_size= 1024*256;
1110 static uint8_t *bit_buffer= NULL;
1111
1112 static void do_video_out(AVFormatContext *s,
1113                          AVOutputStream *ost,
1114                          AVInputStream *ist,
1115                          AVFrame *in_picture,
1116                          int *frame_size)
1117 {
1118     int nb_frames, i, ret;
1119     AVFrame *final_picture, *formatted_picture, *resampling_dst, *padding_src;
1120     AVCodecContext *enc, *dec;
1121     double sync_ipts;
1122
1123     enc = ost->st->codec;
1124     dec = ist->st->codec;
1125
1126     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1127
1128     /* by default, we output a single frame */
1129     nb_frames = 1;
1130
1131     *frame_size = 0;
1132
1133     if(video_sync_method){
1134         double vdelta = sync_ipts - ost->sync_opts;
1135         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1136         if (vdelta < -1.1)
1137             nb_frames = 0;
1138         else if (video_sync_method == 2 || (video_sync_method<0 && (s->oformat->flags & AVFMT_VARIABLE_FPS))){
1139             if(vdelta<=-0.6){
1140                 nb_frames=0;
1141             }else if(vdelta>0.6)
1142                 ost->sync_opts= lrintf(sync_ipts);
1143         }else if (vdelta > 1.1)
1144             nb_frames = lrintf(vdelta);
1145 //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);
1146         if (nb_frames == 0){
1147             ++nb_frames_drop;
1148             if (verbose>2)
1149                 fprintf(stderr, "*** drop!\n");
1150         }else if (nb_frames > 1) {
1151             nb_frames_dup += nb_frames - 1;
1152             if (verbose>2)
1153                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1154         }
1155     }else
1156         ost->sync_opts= lrintf(sync_ipts);
1157
1158     nb_frames= FFMIN(nb_frames, max_frames[AVMEDIA_TYPE_VIDEO] - ost->frame_number);
1159     if (nb_frames <= 0)
1160         return;
1161
1162     formatted_picture = in_picture;
1163     final_picture = formatted_picture;
1164     padding_src = formatted_picture;
1165     resampling_dst = &ost->pict_tmp;
1166
1167     if (   ost->resample_height != ist->st->codec->height
1168         || ost->resample_width  != ist->st->codec->width
1169         || (ost->resample_pix_fmt!= ist->st->codec->pix_fmt) ) {
1170
1171         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));
1172         if(!ost->video_resample)
1173             ffmpeg_exit(1);
1174     }
1175
1176 #if !CONFIG_AVFILTER
1177     if (ost->video_resample) {
1178         padding_src = NULL;
1179         final_picture = &ost->pict_tmp;
1180         if(  ost->resample_height != ist->st->codec->height
1181           || ost->resample_width  != ist->st->codec->width
1182           || (ost->resample_pix_fmt!= ist->st->codec->pix_fmt) ) {
1183
1184             /* initialize a new scaler context */
1185             sws_freeContext(ost->img_resample_ctx);
1186             sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
1187             ost->img_resample_ctx = sws_getContext(
1188                 ist->st->codec->width,
1189                 ist->st->codec->height,
1190                 ist->st->codec->pix_fmt,
1191                 ost->st->codec->width,
1192                 ost->st->codec->height,
1193                 ost->st->codec->pix_fmt,
1194                 sws_flags, NULL, NULL, NULL);
1195             if (ost->img_resample_ctx == NULL) {
1196                 fprintf(stderr, "Cannot get resampling context\n");
1197                 ffmpeg_exit(1);
1198             }
1199         }
1200         sws_scale(ost->img_resample_ctx, formatted_picture->data, formatted_picture->linesize,
1201               0, ost->resample_height, resampling_dst->data, resampling_dst->linesize);
1202     }
1203 #endif
1204
1205     /* duplicates frame if needed */
1206     for(i=0;i<nb_frames;i++) {
1207         AVPacket pkt;
1208         av_init_packet(&pkt);
1209         pkt.stream_index= ost->index;
1210
1211         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1212             /* raw pictures are written as AVPicture structure to
1213                avoid any copies. We support temorarily the older
1214                method. */
1215             AVFrame* old_frame = enc->coded_frame;
1216             enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
1217             pkt.data= (uint8_t *)final_picture;
1218             pkt.size=  sizeof(AVPicture);
1219             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1220             pkt.flags |= AV_PKT_FLAG_KEY;
1221
1222             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1223             enc->coded_frame = old_frame;
1224         } else {
1225             AVFrame big_picture;
1226
1227             big_picture= *final_picture;
1228             /* better than nothing: use input picture interlaced
1229                settings */
1230             big_picture.interlaced_frame = in_picture->interlaced_frame;
1231             if(avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)){
1232                 if(top_field_first == -1)
1233                     big_picture.top_field_first = in_picture->top_field_first;
1234                 else
1235                     big_picture.top_field_first = top_field_first;
1236             }
1237
1238             /* handles sameq here. This is not correct because it may
1239                not be a global option */
1240             big_picture.quality = same_quality ? ist->st->quality : ost->st->quality;
1241             if(!me_threshold)
1242                 big_picture.pict_type = 0;
1243 //            big_picture.pts = AV_NOPTS_VALUE;
1244             big_picture.pts= ost->sync_opts;
1245 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1246 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1247             if (ost->forced_kf_index < ost->forced_kf_count &&
1248                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1249                 big_picture.pict_type = FF_I_TYPE;
1250                 ost->forced_kf_index++;
1251             }
1252             ret = avcodec_encode_video(enc,
1253                                        bit_buffer, bit_buffer_size,
1254                                        &big_picture);
1255             if (ret < 0) {
1256                 fprintf(stderr, "Video encoding failed\n");
1257                 ffmpeg_exit(1);
1258             }
1259
1260             if(ret>0){
1261                 pkt.data= bit_buffer;
1262                 pkt.size= ret;
1263                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1264                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1265 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1266    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1267    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1268
1269                 if(enc->coded_frame->key_frame)
1270                     pkt.flags |= AV_PKT_FLAG_KEY;
1271                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1272                 *frame_size = ret;
1273                 video_size += ret;
1274                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1275                 //        enc->frame_number-1, ret, enc->pict_type);
1276                 /* if two pass, output log */
1277                 if (ost->logfile && enc->stats_out) {
1278                     fprintf(ost->logfile, "%s", enc->stats_out);
1279                 }
1280             }
1281         }
1282         ost->sync_opts++;
1283         ost->frame_number++;
1284     }
1285 }
1286
1287 static double psnr(double d){
1288     return -10.0*log(d)/log(10.0);
1289 }
1290
1291 static void do_video_stats(AVFormatContext *os, AVOutputStream *ost,
1292                            int frame_size)
1293 {
1294     AVCodecContext *enc;
1295     int frame_number;
1296     double ti1, bitrate, avg_bitrate;
1297
1298     /* this is executed just the first time do_video_stats is called */
1299     if (!vstats_file) {
1300         vstats_file = fopen(vstats_filename, "w");
1301         if (!vstats_file) {
1302             perror("fopen");
1303             ffmpeg_exit(1);
1304         }
1305     }
1306
1307     enc = ost->st->codec;
1308     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1309         frame_number = ost->frame_number;
1310         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1311         if (enc->flags&CODEC_FLAG_PSNR)
1312             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1313
1314         fprintf(vstats_file,"f_size= %6d ", frame_size);
1315         /* compute pts value */
1316         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1317         if (ti1 < 0.01)
1318             ti1 = 0.01;
1319
1320         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1321         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1322         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1323             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1324         fprintf(vstats_file,"type= %c\n", av_get_pict_type_char(enc->coded_frame->pict_type));
1325     }
1326 }
1327
1328 static void print_report(AVFormatContext **output_files,
1329                          AVOutputStream **ost_table, int nb_ostreams,
1330                          int is_last_report)
1331 {
1332     char buf[1024];
1333     AVOutputStream *ost;
1334     AVFormatContext *oc;
1335     int64_t total_size;
1336     AVCodecContext *enc;
1337     int frame_number, vid, i;
1338     double bitrate, ti1, pts;
1339     static int64_t last_time = -1;
1340     static int qp_histogram[52];
1341
1342     if (!is_last_report) {
1343         int64_t cur_time;
1344         /* display the report every 0.5 seconds */
1345         cur_time = av_gettime();
1346         if (last_time == -1) {
1347             last_time = cur_time;
1348             return;
1349         }
1350         if ((cur_time - last_time) < 500000)
1351             return;
1352         last_time = cur_time;
1353     }
1354
1355
1356     oc = output_files[0];
1357
1358     total_size = url_fsize(oc->pb);
1359     if(total_size<0) // FIXME improve url_fsize() so it works with non seekable output too
1360         total_size= url_ftell(oc->pb);
1361
1362     buf[0] = '\0';
1363     ti1 = 1e10;
1364     vid = 0;
1365     for(i=0;i<nb_ostreams;i++) {
1366         ost = ost_table[i];
1367         enc = ost->st->codec;
1368         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1369             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ",
1370                      !ost->st->stream_copy ?
1371                      enc->coded_frame->quality/(float)FF_QP2LAMBDA : -1);
1372         }
1373         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1374             float t = (av_gettime()-timer_start) / 1000000.0;
1375
1376             frame_number = ost->frame_number;
1377             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1378                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0,
1379                      !ost->st->stream_copy ?
1380                      enc->coded_frame->quality/(float)FF_QP2LAMBDA : -1);
1381             if(is_last_report)
1382                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1383             if(qp_hist){
1384                 int j;
1385                 int qp= lrintf(enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1386                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1387                     qp_histogram[qp]++;
1388                 for(j=0; j<32; j++)
1389                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1390             }
1391             if (enc->flags&CODEC_FLAG_PSNR){
1392                 int j;
1393                 double error, error_sum=0;
1394                 double scale, scale_sum=0;
1395                 char type[3]= {'Y','U','V'};
1396                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1397                 for(j=0; j<3; j++){
1398                     if(is_last_report){
1399                         error= enc->error[j];
1400                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1401                     }else{
1402                         error= enc->coded_frame->error[j];
1403                         scale= enc->width*enc->height*255.0*255.0;
1404                     }
1405                     if(j) scale/=4;
1406                     error_sum += error;
1407                     scale_sum += scale;
1408                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1409                 }
1410                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1411             }
1412             vid = 1;
1413         }
1414         /* compute min output value */
1415         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1416         if ((pts < ti1) && (pts > 0))
1417             ti1 = pts;
1418     }
1419     if (ti1 < 0.01)
1420         ti1 = 0.01;
1421
1422     if (verbose || is_last_report) {
1423         bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1424
1425         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1426             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1427             (double)total_size / 1024, ti1, bitrate);
1428
1429         if (nb_frames_dup || nb_frames_drop)
1430           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1431                   nb_frames_dup, nb_frames_drop);
1432
1433         if (verbose >= 0)
1434             fprintf(stderr, "%s    \r", buf);
1435
1436         fflush(stderr);
1437     }
1438
1439     if (is_last_report && verbose >= 0){
1440         int64_t raw= audio_size + video_size + extra_size;
1441         fprintf(stderr, "\n");
1442         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1443                 video_size/1024.0,
1444                 audio_size/1024.0,
1445                 extra_size/1024.0,
1446                 100.0*(total_size - raw)/raw
1447         );
1448     }
1449 }
1450
1451 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1452 static int output_packet(AVInputStream *ist, int ist_index,
1453                          AVOutputStream **ost_table, int nb_ostreams,
1454                          const AVPacket *pkt)
1455 {
1456     AVFormatContext *os;
1457     AVOutputStream *ost;
1458     int ret, i;
1459     int got_picture;
1460     AVFrame picture;
1461     void *buffer_to_free;
1462     static unsigned int samples_size= 0;
1463     AVSubtitle subtitle, *subtitle_to_free;
1464     int64_t pkt_pts = AV_NOPTS_VALUE;
1465 #if CONFIG_AVFILTER
1466     int frame_available;
1467 #endif
1468
1469     AVPacket avpkt;
1470     int bps = av_get_bits_per_sample_fmt(ist->st->codec->sample_fmt)>>3;
1471
1472     if(ist->next_pts == AV_NOPTS_VALUE)
1473         ist->next_pts= ist->pts;
1474
1475     if (pkt == NULL) {
1476         /* EOF handling */
1477         av_init_packet(&avpkt);
1478         avpkt.data = NULL;
1479         avpkt.size = 0;
1480         goto handle_eof;
1481     } else {
1482         avpkt = *pkt;
1483     }
1484
1485     if(pkt->dts != AV_NOPTS_VALUE)
1486         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1487     if(pkt->pts != AV_NOPTS_VALUE)
1488         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1489
1490     //while we have more to decode or while the decoder did output something on EOF
1491     while (avpkt.size > 0 || (!pkt && ist->next_pts != ist->pts)) {
1492         uint8_t *data_buf, *decoded_data_buf;
1493         int data_size, decoded_data_size;
1494     handle_eof:
1495         ist->pts= ist->next_pts;
1496
1497         if(avpkt.size && avpkt.size != pkt->size &&
1498            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1499             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1500             ist->showed_multi_packet_warning=1;
1501         }
1502
1503         /* decode the packet if needed */
1504         decoded_data_buf = NULL; /* fail safe */
1505         decoded_data_size= 0;
1506         data_buf  = avpkt.data;
1507         data_size = avpkt.size;
1508         subtitle_to_free = NULL;
1509         if (ist->decoding_needed) {
1510             switch(ist->st->codec->codec_type) {
1511             case AVMEDIA_TYPE_AUDIO:{
1512                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1513                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1514                     av_free(samples);
1515                     samples= av_malloc(samples_size);
1516                 }
1517                 decoded_data_size= samples_size;
1518                     /* XXX: could avoid copy if PCM 16 bits with same
1519                        endianness as CPU */
1520                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1521                                             &avpkt);
1522                 if (ret < 0)
1523                     goto fail_decode;
1524                 avpkt.data += ret;
1525                 avpkt.size -= ret;
1526                 data_size   = ret;
1527                 /* Some bug in mpeg audio decoder gives */
1528                 /* decoded_data_size < 0, it seems they are overflows */
1529                 if (decoded_data_size <= 0) {
1530                     /* no audio frame */
1531                     continue;
1532                 }
1533                 decoded_data_buf = (uint8_t *)samples;
1534                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1535                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1536                 break;}
1537             case AVMEDIA_TYPE_VIDEO:
1538                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1539                     /* XXX: allocate picture correctly */
1540                     avcodec_get_frame_defaults(&picture);
1541                     avpkt.pts = pkt_pts;
1542                     avpkt.dts = ist->pts;
1543                     pkt_pts = AV_NOPTS_VALUE;
1544
1545                     ret = avcodec_decode_video2(ist->st->codec,
1546                                                 &picture, &got_picture, &avpkt);
1547                     ist->st->quality= picture.quality;
1548                     if (ret < 0)
1549                         goto fail_decode;
1550                     if (!got_picture) {
1551                         /* no picture yet */
1552                         goto discard_packet;
1553                     }
1554                     ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, picture.pkt_pts, picture.pkt_dts);
1555                     if (ist->st->codec->time_base.num != 0) {
1556                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1557                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1558                                           ist->st->codec->time_base.num * ticks) /
1559                             ist->st->codec->time_base.den;
1560                     }
1561                     avpkt.size = 0;
1562                     break;
1563             case AVMEDIA_TYPE_SUBTITLE:
1564                 ret = avcodec_decode_subtitle2(ist->st->codec,
1565                                                &subtitle, &got_picture, &avpkt);
1566                 if (ret < 0)
1567                     goto fail_decode;
1568                 if (!got_picture) {
1569                     goto discard_packet;
1570                 }
1571                 subtitle_to_free = &subtitle;
1572                 avpkt.size = 0;
1573                 break;
1574             default:
1575                 goto fail_decode;
1576             }
1577         } else {
1578             switch(ist->st->codec->codec_type) {
1579             case AVMEDIA_TYPE_AUDIO:
1580                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1581                     ist->st->codec->sample_rate;
1582                 break;
1583             case AVMEDIA_TYPE_VIDEO:
1584                 if (ist->st->codec->time_base.num != 0) {
1585                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1586                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1587                                       ist->st->codec->time_base.num * ticks) /
1588                         ist->st->codec->time_base.den;
1589                 }
1590                 break;
1591             }
1592             ret = avpkt.size;
1593             avpkt.size = 0;
1594         }
1595
1596         buffer_to_free = NULL;
1597         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1598             pre_process_video_frame(ist, (AVPicture *)&picture,
1599                                     &buffer_to_free);
1600         }
1601
1602 #if CONFIG_AVFILTER
1603         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ist->input_video_filter) {
1604             AVRational sar;
1605             if (ist->st->sample_aspect_ratio.num) sar = ist->st->sample_aspect_ratio;
1606             else                                  sar = ist->st->codec->sample_aspect_ratio;
1607             // add it to be filtered
1608             av_vsrc_buffer_add_frame(ist->input_video_filter, &picture,
1609                                      ist->pts,
1610                                      sar);
1611         }
1612 #endif
1613
1614         // preprocess audio (volume)
1615         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1616             if (audio_volume != 256) {
1617                 short *volp;
1618                 volp = samples;
1619                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1620                     int v = ((*volp) * audio_volume + 128) >> 8;
1621                     if (v < -32768) v = -32768;
1622                     if (v >  32767) v = 32767;
1623                     *volp++ = v;
1624                 }
1625             }
1626         }
1627
1628         /* frame rate emulation */
1629         if (rate_emu) {
1630             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1631             int64_t now = av_gettime() - ist->start;
1632             if (pts > now)
1633                 usleep(pts - now);
1634         }
1635 #if CONFIG_AVFILTER
1636         frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1637             !ist->output_video_filter || avfilter_poll_frame(ist->output_video_filter->inputs[0]);
1638 #endif
1639         /* if output time reached then transcode raw format,
1640            encode packets and output them */
1641         if (start_time == 0 || ist->pts >= start_time)
1642 #if CONFIG_AVFILTER
1643         while (frame_available) {
1644             AVRational ist_pts_tb;
1645             if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ist->output_video_filter)
1646                 get_filtered_video_frame(ist->output_video_filter, &picture, &ist->picref, &ist_pts_tb);
1647             if (ist->picref)
1648                 ist->pts = av_rescale_q(ist->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1649 #endif
1650             for(i=0;i<nb_ostreams;i++) {
1651                 int frame_size;
1652
1653                 ost = ost_table[i];
1654                 if (ost->source_index == ist_index) {
1655                     os = output_files[ost->file_index];
1656
1657                     /* set the input output pts pairs */
1658                     //ost->sync_ipts = (double)(ist->pts + input_files_ts_offset[ist->file_index] - start_time)/ AV_TIME_BASE;
1659
1660                     if (ost->encoding_needed) {
1661                         av_assert0(ist->decoding_needed);
1662                         switch(ost->st->codec->codec_type) {
1663                         case AVMEDIA_TYPE_AUDIO:
1664                             do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1665                             break;
1666                         case AVMEDIA_TYPE_VIDEO:
1667 #if CONFIG_AVFILTER
1668                             if (ist->picref->video)
1669                                 ost->st->codec->sample_aspect_ratio = ist->picref->video->pixel_aspect;
1670 #endif
1671                             do_video_out(os, ost, ist, &picture, &frame_size);
1672                             if (vstats_filename && frame_size)
1673                                 do_video_stats(os, ost, frame_size);
1674                             break;
1675                         case AVMEDIA_TYPE_SUBTITLE:
1676                             do_subtitle_out(os, ost, ist, &subtitle,
1677                                             pkt->pts);
1678                             break;
1679                         default:
1680                             abort();
1681                         }
1682                     } else {
1683                         AVFrame avframe; //FIXME/XXX remove this
1684                         AVPacket opkt;
1685                         int64_t ost_tb_start_time= av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1686
1687                         av_init_packet(&opkt);
1688
1689                         if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1690                             continue;
1691
1692                         /* no reencoding needed : output the packet directly */
1693                         /* force the input stream PTS */
1694
1695                         avcodec_get_frame_defaults(&avframe);
1696                         ost->st->codec->coded_frame= &avframe;
1697                         avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1698
1699                         if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1700                             audio_size += data_size;
1701                         else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1702                             video_size += data_size;
1703                             ost->sync_opts++;
1704                         }
1705
1706                         opkt.stream_index= ost->index;
1707                         if(pkt->pts != AV_NOPTS_VALUE)
1708                             opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1709                         else
1710                             opkt.pts= AV_NOPTS_VALUE;
1711
1712                         if (pkt->dts == AV_NOPTS_VALUE)
1713                             opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1714                         else
1715                             opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1716                         opkt.dts -= ost_tb_start_time;
1717
1718                         opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1719                         opkt.flags= pkt->flags;
1720
1721                         //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1722                         if(   ost->st->codec->codec_id != CODEC_ID_H264
1723                            && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1724                            && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1725                            ) {
1726                             if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1727                                 opkt.destruct= av_destruct_packet;
1728                         } else {
1729                             opkt.data = data_buf;
1730                             opkt.size = data_size;
1731                         }
1732
1733                         write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1734                         ost->st->codec->frame_number++;
1735                         ost->frame_number++;
1736                         av_free_packet(&opkt);
1737                     }
1738                 }
1739             }
1740
1741 #if CONFIG_AVFILTER
1742             frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1743                               ist->output_video_filter && avfilter_poll_frame(ist->output_video_filter->inputs[0]);
1744             if(ist->picref)
1745                 avfilter_unref_buffer(ist->picref);
1746         }
1747 #endif
1748         av_free(buffer_to_free);
1749         /* XXX: allocate the subtitles in the codec ? */
1750         if (subtitle_to_free) {
1751             avsubtitle_free(subtitle_to_free);
1752             subtitle_to_free = NULL;
1753         }
1754     }
1755  discard_packet:
1756     if (pkt == NULL) {
1757         /* EOF handling */
1758
1759         for(i=0;i<nb_ostreams;i++) {
1760             ost = ost_table[i];
1761             if (ost->source_index == ist_index) {
1762                 AVCodecContext *enc= ost->st->codec;
1763                 os = output_files[ost->file_index];
1764
1765                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1766                     continue;
1767                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1768                     continue;
1769
1770                 if (ost->encoding_needed) {
1771                     for(;;) {
1772                         AVPacket pkt;
1773                         int fifo_bytes;
1774                         av_init_packet(&pkt);
1775                         pkt.stream_index= ost->index;
1776
1777                         switch(ost->st->codec->codec_type) {
1778                         case AVMEDIA_TYPE_AUDIO:
1779                             fifo_bytes = av_fifo_size(ost->fifo);
1780                             ret = 0;
1781                             /* encode any samples remaining in fifo */
1782                             if (fifo_bytes > 0) {
1783                                 int osize = av_get_bits_per_sample_fmt(enc->sample_fmt) >> 3;
1784                                 int fs_tmp = enc->frame_size;
1785
1786                                 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1787                                 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1788                                     enc->frame_size = fifo_bytes / (osize * enc->channels);
1789                                 } else { /* pad */
1790                                     int frame_bytes = enc->frame_size*osize*enc->channels;
1791                                     if (allocated_audio_buf_size < frame_bytes)
1792                                         ffmpeg_exit(1);
1793                                     memset(audio_buf+fifo_bytes, 0, frame_bytes - fifo_bytes);
1794                                 }
1795
1796                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1797                                 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1798                                                           ost->st->time_base.num, enc->sample_rate);
1799                                 enc->frame_size = fs_tmp;
1800                             }
1801                             if(ret <= 0) {
1802                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1803                             }
1804                             if (ret < 0) {
1805                                 fprintf(stderr, "Audio encoding failed\n");
1806                                 ffmpeg_exit(1);
1807                             }
1808                             audio_size += ret;
1809                             pkt.flags |= AV_PKT_FLAG_KEY;
1810                             break;
1811                         case AVMEDIA_TYPE_VIDEO:
1812                             ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1813                             if (ret < 0) {
1814                                 fprintf(stderr, "Video encoding failed\n");
1815                                 ffmpeg_exit(1);
1816                             }
1817                             video_size += ret;
1818                             if(enc->coded_frame && enc->coded_frame->key_frame)
1819                                 pkt.flags |= AV_PKT_FLAG_KEY;
1820                             if (ost->logfile && enc->stats_out) {
1821                                 fprintf(ost->logfile, "%s", enc->stats_out);
1822                             }
1823                             break;
1824                         default:
1825                             ret=-1;
1826                         }
1827
1828                         if(ret<=0)
1829                             break;
1830                         pkt.data= bit_buffer;
1831                         pkt.size= ret;
1832                         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1833                             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1834                         write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1835                     }
1836                 }
1837             }
1838         }
1839     }
1840
1841     return 0;
1842  fail_decode:
1843     return -1;
1844 }
1845
1846 static void print_sdp(AVFormatContext **avc, int n)
1847 {
1848     char sdp[2048];
1849
1850     avf_sdp_create(avc, n, sdp, sizeof(sdp));
1851     printf("SDP:\n%s\n", sdp);
1852     fflush(stdout);
1853 }
1854
1855 static int copy_chapters(int infile, int outfile)
1856 {
1857     AVFormatContext *is = input_files[infile];
1858     AVFormatContext *os = output_files[outfile];
1859     int i;
1860
1861     for (i = 0; i < is->nb_chapters; i++) {
1862         AVChapter *in_ch = is->chapters[i], *out_ch;
1863         int64_t ts_off   = av_rescale_q(start_time - input_files_ts_offset[infile],
1864                                       AV_TIME_BASE_Q, in_ch->time_base);
1865         int64_t rt       = (recording_time == INT64_MAX) ? INT64_MAX :
1866                            av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
1867
1868
1869         if (in_ch->end < ts_off)
1870             continue;
1871         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
1872             break;
1873
1874         out_ch = av_mallocz(sizeof(AVChapter));
1875         if (!out_ch)
1876             return AVERROR(ENOMEM);
1877
1878         out_ch->id        = in_ch->id;
1879         out_ch->time_base = in_ch->time_base;
1880         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
1881         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
1882
1883         if (metadata_chapters_autocopy)
1884             av_metadata_copy(&out_ch->metadata, in_ch->metadata, 0);
1885
1886         os->nb_chapters++;
1887         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
1888         if (!os->chapters)
1889             return AVERROR(ENOMEM);
1890         os->chapters[os->nb_chapters - 1] = out_ch;
1891     }
1892     return 0;
1893 }
1894
1895 static void parse_forced_key_frames(char *kf, AVOutputStream *ost,
1896                                     AVCodecContext *avctx)
1897 {
1898     char *p;
1899     int n = 1, i;
1900     int64_t t;
1901
1902     for (p = kf; *p; p++)
1903         if (*p == ',')
1904             n++;
1905     ost->forced_kf_count = n;
1906     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1907     if (!ost->forced_kf_pts) {
1908         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1909         ffmpeg_exit(1);
1910     }
1911     for (i = 0; i < n; i++) {
1912         p = i ? strchr(p, ',') + 1 : kf;
1913         t = parse_time_or_die("force_key_frames", p, 1);
1914         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1915     }
1916 }
1917
1918 /*
1919  * The following code is the main loop of the file converter
1920  */
1921 static int transcode(AVFormatContext **output_files,
1922                      int nb_output_files,
1923                      AVFormatContext **input_files,
1924                      int nb_input_files,
1925                      AVStreamMap *stream_maps, int nb_stream_maps)
1926 {
1927     int ret = 0, i, j, k, n, nb_istreams = 0, nb_ostreams = 0;
1928     AVFormatContext *is, *os;
1929     AVCodecContext *codec, *icodec;
1930     AVOutputStream *ost, **ost_table = NULL;
1931     AVInputStream *ist, **ist_table = NULL;
1932     AVInputFile *file_table;
1933     char error[1024];
1934     int key;
1935     int want_sdp = 1;
1936     uint8_t no_packet[MAX_FILES]={0};
1937     int no_packet_count=0;
1938
1939     file_table= av_mallocz(nb_input_files * sizeof(AVInputFile));
1940     if (!file_table)
1941         goto fail;
1942
1943     /* input stream init */
1944     j = 0;
1945     for(i=0;i<nb_input_files;i++) {
1946         is = input_files[i];
1947         file_table[i].ist_index = j;
1948         file_table[i].nb_streams = is->nb_streams;
1949         j += is->nb_streams;
1950     }
1951     nb_istreams = j;
1952
1953     ist_table = av_mallocz(nb_istreams * sizeof(AVInputStream *));
1954     if (!ist_table)
1955         goto fail;
1956
1957     for(i=0;i<nb_istreams;i++) {
1958         ist = av_mallocz(sizeof(AVInputStream));
1959         if (!ist)
1960             goto fail;
1961         ist_table[i] = ist;
1962     }
1963     j = 0;
1964     for(i=0;i<nb_input_files;i++) {
1965         is = input_files[i];
1966         for(k=0;k<is->nb_streams;k++) {
1967             ist = ist_table[j++];
1968             ist->st = is->streams[k];
1969             ist->file_index = i;
1970             ist->index = k;
1971             ist->discard = 1; /* the stream is discarded by default
1972                                  (changed later) */
1973
1974             if (rate_emu) {
1975                 ist->start = av_gettime();
1976             }
1977         }
1978     }
1979
1980     /* output stream init */
1981     nb_ostreams = 0;
1982     for(i=0;i<nb_output_files;i++) {
1983         os = output_files[i];
1984         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1985             dump_format(output_files[i], i, output_files[i]->filename, 1);
1986             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
1987             ret = AVERROR(EINVAL);
1988             goto fail;
1989         }
1990         nb_ostreams += os->nb_streams;
1991     }
1992     if (nb_stream_maps > 0 && nb_stream_maps != nb_ostreams) {
1993         fprintf(stderr, "Number of stream maps must match number of output streams\n");
1994         ret = AVERROR(EINVAL);
1995         goto fail;
1996     }
1997
1998     /* Sanity check the mapping args -- do the input files & streams exist? */
1999     for(i=0;i<nb_stream_maps;i++) {
2000         int fi = stream_maps[i].file_index;
2001         int si = stream_maps[i].stream_index;
2002
2003         if (fi < 0 || fi > nb_input_files - 1 ||
2004             si < 0 || si > file_table[fi].nb_streams - 1) {
2005             fprintf(stderr,"Could not find input stream #%d.%d\n", fi, si);
2006             ret = AVERROR(EINVAL);
2007             goto fail;
2008         }
2009         fi = stream_maps[i].sync_file_index;
2010         si = stream_maps[i].sync_stream_index;
2011         if (fi < 0 || fi > nb_input_files - 1 ||
2012             si < 0 || si > file_table[fi].nb_streams - 1) {
2013             fprintf(stderr,"Could not find sync stream #%d.%d\n", fi, si);
2014             ret = AVERROR(EINVAL);
2015             goto fail;
2016         }
2017     }
2018
2019     ost_table = av_mallocz(sizeof(AVOutputStream *) * nb_ostreams);
2020     if (!ost_table)
2021         goto fail;
2022     n = 0;
2023     for(k=0;k<nb_output_files;k++) {
2024         os = output_files[k];
2025         for(i=0;i<os->nb_streams;i++,n++) {
2026             int found;
2027             ost = ost_table[n] = output_streams_for_file[k][i];
2028             ost->st = os->streams[i];
2029             if (nb_stream_maps > 0) {
2030                 ost->source_index = file_table[stream_maps[n].file_index].ist_index +
2031                     stream_maps[n].stream_index;
2032
2033                 /* Sanity check that the stream types match */
2034                 if (ist_table[ost->source_index]->st->codec->codec_type != ost->st->codec->codec_type) {
2035                     int i= ost->file_index;
2036                     dump_format(output_files[i], i, output_files[i]->filename, 1);
2037                     fprintf(stderr, "Codec type mismatch for mapping #%d.%d -> #%d.%d\n",
2038                         stream_maps[n].file_index, stream_maps[n].stream_index,
2039                         ost->file_index, ost->index);
2040                     ffmpeg_exit(1);
2041                 }
2042
2043             } else {
2044                 int best_nb_frames=-1;
2045                 /* get corresponding input stream index : we select the first one with the right type */
2046                 found = 0;
2047                 for(j=0;j<nb_istreams;j++) {
2048                     int skip=0;
2049                     ist = ist_table[j];
2050                     if(opt_programid){
2051                         int pi,si;
2052                         AVFormatContext *f= input_files[ ist->file_index ];
2053                         skip=1;
2054                         for(pi=0; pi<f->nb_programs; pi++){
2055                             AVProgram *p= f->programs[pi];
2056                             if(p->id == opt_programid)
2057                                 for(si=0; si<p->nb_stream_indexes; si++){
2058                                     if(f->streams[ p->stream_index[si] ] == ist->st)
2059                                         skip=0;
2060                                 }
2061                         }
2062                     }
2063                     if (ist->discard && ist->st->discard != AVDISCARD_ALL && !skip &&
2064                         ist->st->codec->codec_type == ost->st->codec->codec_type) {
2065                         if(best_nb_frames < ist->st->codec_info_nb_frames){
2066                             best_nb_frames= ist->st->codec_info_nb_frames;
2067                             ost->source_index = j;
2068                             found = 1;
2069                         }
2070                     }
2071                 }
2072
2073                 if (!found) {
2074                     if(! opt_programid) {
2075                         /* try again and reuse existing stream */
2076                         for(j=0;j<nb_istreams;j++) {
2077                             ist = ist_table[j];
2078                             if (   ist->st->codec->codec_type == ost->st->codec->codec_type
2079                                 && ist->st->discard != AVDISCARD_ALL) {
2080                                 ost->source_index = j;
2081                                 found = 1;
2082                             }
2083                         }
2084                     }
2085                     if (!found) {
2086                         int i= ost->file_index;
2087                         dump_format(output_files[i], i, output_files[i]->filename, 1);
2088                         fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",
2089                                 ost->file_index, ost->index);
2090                         ffmpeg_exit(1);
2091                     }
2092                 }
2093             }
2094             ist = ist_table[ost->source_index];
2095             ist->discard = 0;
2096             ost->sync_ist = (nb_stream_maps > 0) ?
2097                 ist_table[file_table[stream_maps[n].sync_file_index].ist_index +
2098                          stream_maps[n].sync_stream_index] : ist;
2099         }
2100     }
2101
2102     /* for each output stream, we compute the right encoding parameters */
2103     for(i=0;i<nb_ostreams;i++) {
2104         ost = ost_table[i];
2105         os = output_files[ost->file_index];
2106         ist = ist_table[ost->source_index];
2107
2108         codec = ost->st->codec;
2109         icodec = ist->st->codec;
2110
2111         if (metadata_streams_autocopy)
2112             av_metadata_copy(&ost->st->metadata, ist->st->metadata,
2113                              AV_METADATA_DONT_OVERWRITE);
2114
2115         ost->st->disposition = ist->st->disposition;
2116         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2117         codec->chroma_sample_location = icodec->chroma_sample_location;
2118
2119         if (ost->st->stream_copy) {
2120             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2121
2122             if (extra_size > INT_MAX)
2123                 goto fail;
2124
2125             /* if stream_copy is selected, no need to decode or encode */
2126             codec->codec_id = icodec->codec_id;
2127             codec->codec_type = icodec->codec_type;
2128
2129             if(!codec->codec_tag){
2130                 if(   !os->oformat->codec_tag
2131                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2132                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2133                     codec->codec_tag = icodec->codec_tag;
2134             }
2135
2136             codec->bit_rate = icodec->bit_rate;
2137             codec->rc_max_rate    = icodec->rc_max_rate;
2138             codec->rc_buffer_size = icodec->rc_buffer_size;
2139             codec->extradata= av_mallocz(extra_size);
2140             if (!codec->extradata)
2141                 goto fail;
2142             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2143             codec->extradata_size= icodec->extradata_size;
2144             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){
2145                 codec->time_base = icodec->time_base;
2146                 codec->time_base.num *= icodec->ticks_per_frame;
2147                 av_reduce(&codec->time_base.num, &codec->time_base.den,
2148                           codec->time_base.num, codec->time_base.den, INT_MAX);
2149             }else
2150                 codec->time_base = ist->st->time_base;
2151             switch(codec->codec_type) {
2152             case AVMEDIA_TYPE_AUDIO:
2153                 if(audio_volume != 256) {
2154                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2155                     ffmpeg_exit(1);
2156                 }
2157                 codec->channel_layout = icodec->channel_layout;
2158                 codec->sample_rate = icodec->sample_rate;
2159                 codec->channels = icodec->channels;
2160                 codec->frame_size = icodec->frame_size;
2161                 codec->block_align= icodec->block_align;
2162                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2163                     codec->block_align= 0;
2164                 if(codec->codec_id == CODEC_ID_AC3)
2165                     codec->block_align= 0;
2166                 break;
2167             case AVMEDIA_TYPE_VIDEO:
2168                 codec->pix_fmt = icodec->pix_fmt;
2169                 codec->width = icodec->width;
2170                 codec->height = icodec->height;
2171                 codec->has_b_frames = icodec->has_b_frames;
2172                 break;
2173             case AVMEDIA_TYPE_SUBTITLE:
2174                 codec->width = icodec->width;
2175                 codec->height = icodec->height;
2176                 break;
2177             default:
2178                 abort();
2179             }
2180         } else {
2181             switch(codec->codec_type) {
2182             case AVMEDIA_TYPE_AUDIO:
2183                 ost->fifo= av_fifo_alloc(1024);
2184                 if(!ost->fifo)
2185                     goto fail;
2186                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2187                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2188                 icodec->request_channels = codec->channels;
2189                 ist->decoding_needed = 1;
2190                 ost->encoding_needed = 1;
2191                 ost->resample_sample_fmt  = icodec->sample_fmt;
2192                 ost->resample_sample_rate = icodec->sample_rate;
2193                 ost->resample_channels    = icodec->channels;
2194                 break;
2195             case AVMEDIA_TYPE_VIDEO:
2196                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2197                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2198                     ffmpeg_exit(1);
2199                 }
2200                 ost->video_resample = (codec->width != icodec->width   ||
2201                                        codec->height != icodec->height ||
2202                         (codec->pix_fmt != icodec->pix_fmt));
2203                 if (ost->video_resample) {
2204 #if !CONFIG_AVFILTER
2205                     avcodec_get_frame_defaults(&ost->pict_tmp);
2206                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2207                                          codec->width, codec->height)) {
2208                         fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
2209                         ffmpeg_exit(1);
2210                     }
2211                     sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
2212                     ost->img_resample_ctx = sws_getContext(
2213                         icodec->width,
2214                         icodec->height,
2215                             icodec->pix_fmt,
2216                             codec->width,
2217                             codec->height,
2218                             codec->pix_fmt,
2219                             sws_flags, NULL, NULL, NULL);
2220                     if (ost->img_resample_ctx == NULL) {
2221                         fprintf(stderr, "Cannot get resampling context\n");
2222                         ffmpeg_exit(1);
2223                     }
2224
2225                     ost->original_height = icodec->height;
2226                     ost->original_width  = icodec->width;
2227 #endif
2228                     codec->bits_per_raw_sample= 0;
2229                 }
2230                 ost->resample_height = icodec->height;
2231                 ost->resample_width  = icodec->width;
2232                 ost->resample_pix_fmt= icodec->pix_fmt;
2233                 ost->encoding_needed = 1;
2234                 ist->decoding_needed = 1;
2235
2236 #if CONFIG_AVFILTER
2237                 if (configure_filters(ist, ost)) {
2238                     fprintf(stderr, "Error opening filters!\n");
2239                     exit(1);
2240                 }
2241 #endif
2242                 break;
2243             case AVMEDIA_TYPE_SUBTITLE:
2244                 ost->encoding_needed = 1;
2245                 ist->decoding_needed = 1;
2246                 break;
2247             default:
2248                 abort();
2249                 break;
2250             }
2251             /* two pass mode */
2252             if (ost->encoding_needed &&
2253                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2254                 char logfilename[1024];
2255                 FILE *f;
2256
2257                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2258                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2259                          i);
2260                 if (codec->flags & CODEC_FLAG_PASS1) {
2261                     f = fopen(logfilename, "wb");
2262                     if (!f) {
2263                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2264                         ffmpeg_exit(1);
2265                     }
2266                     ost->logfile = f;
2267                 } else {
2268                     char  *logbuffer;
2269                     size_t logbuffer_size;
2270                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2271                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2272                         ffmpeg_exit(1);
2273                     }
2274                     codec->stats_in = logbuffer;
2275                 }
2276             }
2277         }
2278         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2279             int size= codec->width * codec->height;
2280             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2281         }
2282     }
2283
2284     if (!bit_buffer)
2285         bit_buffer = av_malloc(bit_buffer_size);
2286     if (!bit_buffer) {
2287         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2288                 bit_buffer_size);
2289         ret = AVERROR(ENOMEM);
2290         goto fail;
2291     }
2292
2293     /* open each encoder */
2294     for(i=0;i<nb_ostreams;i++) {
2295         ost = ost_table[i];
2296         if (ost->encoding_needed) {
2297             AVCodec *codec = i < nb_output_codecs ? output_codecs[i] : NULL;
2298             AVCodecContext *dec = ist_table[ost->source_index]->st->codec;
2299             if (!codec)
2300                 codec = avcodec_find_encoder(ost->st->codec->codec_id);
2301             if (!codec) {
2302                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2303                          ost->st->codec->codec_id, ost->file_index, ost->index);
2304                 ret = AVERROR(EINVAL);
2305                 goto dump_format;
2306             }
2307             if (dec->subtitle_header) {
2308                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2309                 if (!ost->st->codec->subtitle_header) {
2310                     ret = AVERROR(ENOMEM);
2311                     goto dump_format;
2312                 }
2313                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2314                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2315             }
2316             if (avcodec_open(ost->st->codec, codec) < 0) {
2317                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2318                         ost->file_index, ost->index);
2319                 ret = AVERROR(EINVAL);
2320                 goto dump_format;
2321             }
2322             extra_size += ost->st->codec->extradata_size;
2323         }
2324     }
2325
2326     /* open each decoder */
2327     for(i=0;i<nb_istreams;i++) {
2328         ist = ist_table[i];
2329         if (ist->decoding_needed) {
2330             AVCodec *codec = i < nb_input_codecs ? input_codecs[i] : NULL;
2331             if (!codec)
2332                 codec = avcodec_find_decoder(ist->st->codec->codec_id);
2333             if (!codec) {
2334                 snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
2335                         ist->st->codec->codec_id, ist->file_index, ist->index);
2336                 ret = AVERROR(EINVAL);
2337                 goto dump_format;
2338             }
2339             if (avcodec_open(ist->st->codec, codec) < 0) {
2340                 snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
2341                         ist->file_index, ist->index);
2342                 ret = AVERROR(EINVAL);
2343                 goto dump_format;
2344             }
2345             //if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2346             //    ist->st->codec->flags |= CODEC_FLAG_REPEAT_FIELD;
2347         }
2348     }
2349
2350     /* init pts */
2351     for(i=0;i<nb_istreams;i++) {
2352         AVStream *st;
2353         ist = ist_table[i];
2354         st= ist->st;
2355         ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
2356         ist->next_pts = AV_NOPTS_VALUE;
2357         init_pts_correction(&ist->pts_ctx);
2358         ist->is_start = 1;
2359     }
2360
2361     /* set meta data information from input file if required */
2362     for (i=0;i<nb_meta_data_maps;i++) {
2363         AVFormatContext *files[2];
2364         AVMetadata      **meta[2];
2365         int j;
2366
2367 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
2368         if ((index) < 0 || (index) >= (nb_elems)) {\
2369             snprintf(error, sizeof(error), "Invalid %s index %d while processing metadata maps\n",\
2370                      (desc), (index));\
2371             ret = AVERROR(EINVAL);\
2372             goto dump_format;\
2373         }
2374
2375         int out_file_index = meta_data_maps[i][0].file;
2376         int in_file_index = meta_data_maps[i][1].file;
2377         if (in_file_index < 0 || out_file_index < 0)
2378             continue;
2379         METADATA_CHECK_INDEX(out_file_index, nb_output_files, "output file")
2380         METADATA_CHECK_INDEX(in_file_index, nb_input_files, "input file")
2381
2382         files[0] = output_files[out_file_index];
2383         files[1] = input_files[in_file_index];
2384
2385         for (j = 0; j < 2; j++) {
2386             AVMetaDataMap *map = &meta_data_maps[i][j];
2387
2388             switch (map->type) {
2389             case 'g':
2390                 meta[j] = &files[j]->metadata;
2391                 break;
2392             case 's':
2393                 METADATA_CHECK_INDEX(map->index, files[j]->nb_streams, "stream")
2394                 meta[j] = &files[j]->streams[map->index]->metadata;
2395                 break;
2396             case 'c':
2397                 METADATA_CHECK_INDEX(map->index, files[j]->nb_chapters, "chapter")
2398                 meta[j] = &files[j]->chapters[map->index]->metadata;
2399                 break;
2400             case 'p':
2401                 METADATA_CHECK_INDEX(map->index, files[j]->nb_programs, "program")
2402                 meta[j] = &files[j]->programs[map->index]->metadata;
2403                 break;
2404             }
2405         }
2406
2407         av_metadata_copy(meta[0], *meta[1], AV_METADATA_DONT_OVERWRITE);
2408     }
2409
2410     /* copy global metadata by default */
2411     if (metadata_global_autocopy) {
2412
2413         for (i = 0; i < nb_output_files; i++)
2414             av_metadata_copy(&output_files[i]->metadata, input_files[0]->metadata,
2415                              AV_METADATA_DONT_OVERWRITE);
2416     }
2417
2418     /* copy chapters according to chapter maps */
2419     for (i = 0; i < nb_chapter_maps; i++) {
2420         int infile  = chapter_maps[i].in_file;
2421         int outfile = chapter_maps[i].out_file;
2422
2423         if (infile < 0 || outfile < 0)
2424             continue;
2425         if (infile >= nb_input_files) {
2426             snprintf(error, sizeof(error), "Invalid input file index %d in chapter mapping.\n", infile);
2427             ret = AVERROR(EINVAL);
2428             goto dump_format;
2429         }
2430         if (outfile >= nb_output_files) {
2431             snprintf(error, sizeof(error), "Invalid output file index %d in chapter mapping.\n",outfile);
2432             ret = AVERROR(EINVAL);
2433             goto dump_format;
2434         }
2435         copy_chapters(infile, outfile);
2436     }
2437
2438     /* copy chapters from the first input file that has them*/
2439     if (!nb_chapter_maps)
2440         for (i = 0; i < nb_input_files; i++) {
2441             if (!input_files[i]->nb_chapters)
2442                 continue;
2443
2444             for (j = 0; j < nb_output_files; j++)
2445                 if ((ret = copy_chapters(i, j)) < 0)
2446                     goto dump_format;
2447             break;
2448         }
2449
2450     /* open files and write file headers */
2451     for(i=0;i<nb_output_files;i++) {
2452         os = output_files[i];
2453         if (av_write_header(os) < 0) {
2454             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2455             ret = AVERROR(EINVAL);
2456             goto dump_format;
2457         }
2458         if (strcmp(output_files[i]->oformat->name, "rtp")) {
2459             want_sdp = 0;
2460         }
2461     }
2462
2463  dump_format:
2464     /* dump the file output parameters - cannot be done before in case
2465        of stream copy */
2466     for(i=0;i<nb_output_files;i++) {
2467         dump_format(output_files[i], i, output_files[i]->filename, 1);
2468     }
2469
2470     /* dump the stream mapping */
2471     if (verbose >= 0) {
2472         fprintf(stderr, "Stream mapping:\n");
2473         for(i=0;i<nb_ostreams;i++) {
2474             ost = ost_table[i];
2475             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2476                     ist_table[ost->source_index]->file_index,
2477                     ist_table[ost->source_index]->index,
2478                     ost->file_index,
2479                     ost->index);
2480             if (ost->sync_ist != ist_table[ost->source_index])
2481                 fprintf(stderr, " [sync #%d.%d]",
2482                         ost->sync_ist->file_index,
2483                         ost->sync_ist->index);
2484             fprintf(stderr, "\n");
2485         }
2486     }
2487
2488     if (ret) {
2489         fprintf(stderr, "%s\n", error);
2490         goto fail;
2491     }
2492
2493     if (want_sdp) {
2494         print_sdp(output_files, nb_output_files);
2495     }
2496
2497     if (!using_stdin && verbose >= 0) {
2498         fprintf(stderr, "Press [q] to stop encoding\n");
2499         url_set_interrupt_cb(decode_interrupt_cb);
2500     }
2501     term_init();
2502
2503     timer_start = av_gettime();
2504
2505     for(; received_sigterm == 0;) {
2506         int file_index, ist_index;
2507         AVPacket pkt;
2508         double ipts_min;
2509         double opts_min;
2510
2511     redo:
2512         ipts_min= 1e100;
2513         opts_min= 1e100;
2514         /* if 'q' pressed, exits */
2515         if (!using_stdin) {
2516             if (q_pressed)
2517                 break;
2518             /* read_key() returns 0 on EOF */
2519             key = read_key();
2520             if (key == 'q')
2521                 break;
2522         }
2523
2524         /* select the stream that we must read now by looking at the
2525            smallest output pts */
2526         file_index = -1;
2527         for(i=0;i<nb_ostreams;i++) {
2528             double ipts, opts;
2529             ost = ost_table[i];
2530             os = output_files[ost->file_index];
2531             ist = ist_table[ost->source_index];
2532             if(ist->is_past_recording_time || no_packet[ist->file_index])
2533                 continue;
2534                 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2535             ipts = (double)ist->pts;
2536             if (!file_table[ist->file_index].eof_reached){
2537                 if(ipts < ipts_min) {
2538                     ipts_min = ipts;
2539                     if(input_sync ) file_index = ist->file_index;
2540                 }
2541                 if(opts < opts_min) {
2542                     opts_min = opts;
2543                     if(!input_sync) file_index = ist->file_index;
2544                 }
2545             }
2546             if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
2547                 file_index= -1;
2548                 break;
2549             }
2550         }
2551         /* if none, if is finished */
2552         if (file_index < 0) {
2553             if(no_packet_count){
2554                 no_packet_count=0;
2555                 memset(no_packet, 0, sizeof(no_packet));
2556                 usleep(10000);
2557                 continue;
2558             }
2559             break;
2560         }
2561
2562         /* finish if limit size exhausted */
2563         if (limit_filesize != 0 && limit_filesize <= url_ftell(output_files[0]->pb))
2564             break;
2565
2566         /* read a frame from it and output it in the fifo */
2567         is = input_files[file_index];
2568         ret= av_read_frame(is, &pkt);
2569         if(ret == AVERROR(EAGAIN)){
2570             no_packet[file_index]=1;
2571             no_packet_count++;
2572             continue;
2573         }
2574         if (ret < 0) {
2575             file_table[file_index].eof_reached = 1;
2576             if (opt_shortest)
2577                 break;
2578             else
2579                 continue;
2580         }
2581
2582         no_packet_count=0;
2583         memset(no_packet, 0, sizeof(no_packet));
2584
2585         if (do_pkt_dump) {
2586             av_pkt_dump_log(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump);
2587         }
2588         /* the following test is needed in case new streams appear
2589            dynamically in stream : we ignore them */
2590         if (pkt.stream_index >= file_table[file_index].nb_streams)
2591             goto discard_packet;
2592         ist_index = file_table[file_index].ist_index + pkt.stream_index;
2593         ist = ist_table[ist_index];
2594         if (ist->discard)
2595             goto discard_packet;
2596
2597         if (pkt.dts != AV_NOPTS_VALUE)
2598             pkt.dts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2599         if (pkt.pts != AV_NOPTS_VALUE)
2600             pkt.pts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2601
2602         if (pkt.stream_index < nb_input_files_ts_scale[file_index]
2603             && input_files_ts_scale[file_index][pkt.stream_index]){
2604             if(pkt.pts != AV_NOPTS_VALUE)
2605                 pkt.pts *= input_files_ts_scale[file_index][pkt.stream_index];
2606             if(pkt.dts != AV_NOPTS_VALUE)
2607                 pkt.dts *= input_files_ts_scale[file_index][pkt.stream_index];
2608         }
2609
2610 //        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);
2611         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2612             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2613             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2614             int64_t delta= pkt_dts - ist->next_pts;
2615             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2616                 input_files_ts_offset[ist->file_index]-= delta;
2617                 if (verbose > 2)
2618                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n", delta, input_files_ts_offset[ist->file_index]);
2619                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2620                 if(pkt.pts != AV_NOPTS_VALUE)
2621                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2622             }
2623         }
2624
2625         /* finish if recording time exhausted */
2626         if (recording_time != INT64_MAX &&
2627             av_compare_ts(pkt.pts, ist->st->time_base, recording_time + start_time, (AVRational){1, 1000000}) >= 0) {
2628             ist->is_past_recording_time = 1;
2629             goto discard_packet;
2630         }
2631
2632         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->index, pkt.size);
2633         if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
2634
2635             if (verbose >= 0)
2636                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2637                         ist->file_index, ist->index);
2638             if (exit_on_error)
2639                 ffmpeg_exit(1);
2640             av_free_packet(&pkt);
2641             goto redo;
2642         }
2643
2644     discard_packet:
2645         av_free_packet(&pkt);
2646
2647         /* dump report by using the output first video and audio streams */
2648         print_report(output_files, ost_table, nb_ostreams, 0);
2649     }
2650
2651     /* at the end of stream, we must flush the decoder buffers */
2652     for(i=0;i<nb_istreams;i++) {
2653         ist = ist_table[i];
2654         if (ist->decoding_needed) {
2655             output_packet(ist, i, ost_table, nb_ostreams, NULL);
2656         }
2657     }
2658
2659     term_exit();
2660
2661     /* write the trailer if needed and close file */
2662     for(i=0;i<nb_output_files;i++) {
2663         os = output_files[i];
2664         av_write_trailer(os);
2665     }
2666
2667     /* dump report by using the first video and audio streams */
2668     print_report(output_files, ost_table, nb_ostreams, 1);
2669
2670     /* close each encoder */
2671     for(i=0;i<nb_ostreams;i++) {
2672         ost = ost_table[i];
2673         if (ost->encoding_needed) {
2674             av_freep(&ost->st->codec->stats_in);
2675             avcodec_close(ost->st->codec);
2676         }
2677     }
2678
2679     /* close each decoder */
2680     for(i=0;i<nb_istreams;i++) {
2681         ist = ist_table[i];
2682         if (ist->decoding_needed) {
2683             avcodec_close(ist->st->codec);
2684         }
2685     }
2686 #if CONFIG_AVFILTER
2687     avfilter_graph_free(&graph);
2688 #endif
2689
2690     /* finished ! */
2691     ret = 0;
2692
2693  fail:
2694     av_freep(&bit_buffer);
2695     av_free(file_table);
2696
2697     if (ist_table) {
2698         for(i=0;i<nb_istreams;i++) {
2699             ist = ist_table[i];
2700             av_free(ist);
2701         }
2702         av_free(ist_table);
2703     }
2704     if (ost_table) {
2705         for(i=0;i<nb_ostreams;i++) {
2706             ost = ost_table[i];
2707             if (ost) {
2708                 if (ost->st->stream_copy)
2709                     av_freep(&ost->st->codec->extradata);
2710                 if (ost->logfile) {
2711                     fclose(ost->logfile);
2712                     ost->logfile = NULL;
2713                 }
2714                 av_fifo_free(ost->fifo); /* works even if fifo is not
2715                                              initialized but set to zero */
2716                 av_freep(&ost->st->codec->subtitle_header);
2717                 av_free(ost->pict_tmp.data[0]);
2718                 av_free(ost->forced_kf_pts);
2719                 if (ost->video_resample)
2720                     sws_freeContext(ost->img_resample_ctx);
2721                 if (ost->resample)
2722                     audio_resample_close(ost->resample);
2723                 if (ost->reformat_ctx)
2724                     av_audio_convert_free(ost->reformat_ctx);
2725                 av_free(ost);
2726             }
2727         }
2728         av_free(ost_table);
2729     }
2730     return ret;
2731 }
2732
2733 static void opt_format(const char *arg)
2734 {
2735     last_asked_format = arg;
2736 }
2737
2738 static void opt_video_rc_override_string(const char *arg)
2739 {
2740     video_rc_override_string = arg;
2741 }
2742
2743 static int opt_me_threshold(const char *opt, const char *arg)
2744 {
2745     me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2746     return 0;
2747 }
2748
2749 static int opt_verbose(const char *opt, const char *arg)
2750 {
2751     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2752     return 0;
2753 }
2754
2755 static int opt_frame_rate(const char *opt, const char *arg)
2756 {
2757     if (av_parse_video_rate(&frame_rate, arg) < 0) {
2758         fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2759         ffmpeg_exit(1);
2760     }
2761     return 0;
2762 }
2763
2764 static int opt_bitrate(const char *opt, const char *arg)
2765 {
2766     int codec_type = opt[0]=='a' ? AVMEDIA_TYPE_AUDIO : AVMEDIA_TYPE_VIDEO;
2767
2768     opt_default(opt, arg);
2769
2770     if (av_get_int(avcodec_opts[codec_type], "b", NULL) < 1000)
2771         fprintf(stderr, "WARNING: The bitrate parameter is set too low. It takes bits/s as argument, not kbits/s\n");
2772
2773     return 0;
2774 }
2775
2776 static int opt_frame_crop(const char *opt, const char *arg)
2777 {
2778     fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
2779     return AVERROR(EINVAL);
2780 }
2781
2782 static void opt_frame_size(const char *arg)
2783 {
2784     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2785         fprintf(stderr, "Incorrect frame size\n");
2786         ffmpeg_exit(1);
2787     }
2788 }
2789
2790 static int opt_pad(const char *opt, const char *arg) {
2791     fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2792     return -1;
2793 }
2794
2795 static void opt_frame_pix_fmt(const char *arg)
2796 {
2797     if (strcmp(arg, "list")) {
2798         frame_pix_fmt = av_get_pix_fmt(arg);
2799         if (frame_pix_fmt == PIX_FMT_NONE) {
2800             fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2801             ffmpeg_exit(1);
2802         }
2803     } else {
2804         show_pix_fmts();
2805         ffmpeg_exit(0);
2806     }
2807 }
2808
2809 static void opt_frame_aspect_ratio(const char *arg)
2810 {
2811     int x = 0, y = 0;
2812     double ar = 0;
2813     const char *p;
2814     char *end;
2815
2816     p = strchr(arg, ':');
2817     if (p) {
2818         x = strtol(arg, &end, 10);
2819         if (end == p)
2820             y = strtol(end+1, &end, 10);
2821         if (x > 0 && y > 0)
2822             ar = (double)x / (double)y;
2823     } else
2824         ar = strtod(arg, NULL);
2825
2826     if (!ar) {
2827         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2828         ffmpeg_exit(1);
2829     }
2830     frame_aspect_ratio = ar;
2831 }
2832
2833 static int opt_metadata(const char *opt, const char *arg)
2834 {
2835     char *mid= strchr(arg, '=');
2836
2837     if(!mid){
2838         fprintf(stderr, "Missing =\n");
2839         ffmpeg_exit(1);
2840     }
2841     *mid++= 0;
2842
2843     av_metadata_set2(&metadata, arg, mid, 0);
2844
2845     return 0;
2846 }
2847
2848 static void opt_qscale(const char *arg)
2849 {
2850     video_qscale = atof(arg);
2851     if (video_qscale <= 0 ||
2852         video_qscale > 255) {
2853         fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2854         ffmpeg_exit(1);
2855     }
2856 }
2857
2858 static void opt_top_field_first(const char *arg)
2859 {
2860     top_field_first= atoi(arg);
2861 }
2862
2863 static int opt_thread_count(const char *opt, const char *arg)
2864 {
2865     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2866 #if !HAVE_THREADS
2867     if (verbose >= 0)
2868         fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2869 #endif
2870     return 0;
2871 }
2872
2873 static void opt_audio_sample_fmt(const char *arg)
2874 {
2875     if (strcmp(arg, "list")) {
2876         audio_sample_fmt = av_get_sample_fmt(arg);
2877         if (audio_sample_fmt == AV_SAMPLE_FMT_NONE) {
2878             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg);
2879             ffmpeg_exit(1);
2880         }
2881     } else {
2882         list_fmts(av_get_sample_fmt_string, AV_SAMPLE_FMT_NB);
2883         ffmpeg_exit(0);
2884     }
2885 }
2886
2887 static int opt_audio_rate(const char *opt, const char *arg)
2888 {
2889     audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2890     return 0;
2891 }
2892
2893 static int opt_audio_channels(const char *opt, const char *arg)
2894 {
2895     audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2896     return 0;
2897 }
2898
2899 static void opt_video_channel(const char *arg)
2900 {
2901     video_channel = strtol(arg, NULL, 0);
2902 }
2903
2904 static void opt_video_standard(const char *arg)
2905 {
2906     video_standard = av_strdup(arg);
2907 }
2908
2909 static void opt_codec(int *pstream_copy, char **pcodec_name,
2910                       int codec_type, const char *arg)
2911 {
2912     av_freep(pcodec_name);
2913     if (!strcmp(arg, "copy")) {
2914         *pstream_copy = 1;
2915     } else {
2916         *pcodec_name = av_strdup(arg);
2917     }
2918 }
2919
2920 static void opt_audio_codec(const char *arg)
2921 {
2922     opt_codec(&audio_stream_copy, &audio_codec_name, AVMEDIA_TYPE_AUDIO, arg);
2923 }
2924
2925 static void opt_video_codec(const char *arg)
2926 {
2927     opt_codec(&video_stream_copy, &video_codec_name, AVMEDIA_TYPE_VIDEO, arg);
2928 }
2929
2930 static void opt_subtitle_codec(const char *arg)
2931 {
2932     opt_codec(&subtitle_stream_copy, &subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, arg);
2933 }
2934
2935 static int opt_codec_tag(const char *opt, const char *arg)
2936 {
2937     char *tail;
2938     uint32_t *codec_tag;
2939
2940     codec_tag = !strcmp(opt, "atag") ? &audio_codec_tag :
2941                 !strcmp(opt, "vtag") ? &video_codec_tag :
2942                 !strcmp(opt, "stag") ? &subtitle_codec_tag : NULL;
2943     if (!codec_tag)
2944         return -1;
2945
2946     *codec_tag = strtol(arg, &tail, 0);
2947     if (!tail || *tail)
2948         *codec_tag = AV_RL32(arg);
2949
2950     return 0;
2951 }
2952
2953 static void opt_map(const char *arg)
2954 {
2955     AVStreamMap *m;
2956     char *p;
2957
2958     stream_maps = grow_array(stream_maps, sizeof(*stream_maps), &nb_stream_maps, nb_stream_maps + 1);
2959     m = &stream_maps[nb_stream_maps-1];
2960
2961     m->file_index = strtol(arg, &p, 0);
2962     if (*p)
2963         p++;
2964
2965     m->stream_index = strtol(p, &p, 0);
2966     if (*p) {
2967         p++;
2968         m->sync_file_index = strtol(p, &p, 0);
2969         if (*p)
2970             p++;
2971         m->sync_stream_index = strtol(p, &p, 0);
2972     } else {
2973         m->sync_file_index = m->file_index;
2974         m->sync_stream_index = m->stream_index;
2975     }
2976 }
2977
2978 static void parse_meta_type(char *arg, char *type, int *index, char **endptr)
2979 {
2980     *endptr = arg;
2981     if (*arg == ',') {
2982         *type = *(++arg);
2983         switch (*arg) {
2984         case 'g':
2985             break;
2986         case 's':
2987         case 'c':
2988         case 'p':
2989             *index = strtol(++arg, endptr, 0);
2990             break;
2991         default:
2992             fprintf(stderr, "Invalid metadata type %c.\n", *arg);
2993             ffmpeg_exit(1);
2994         }
2995     } else
2996         *type = 'g';
2997 }
2998
2999 static void opt_map_metadata(const char *arg)
3000 {
3001     AVMetaDataMap *m, *m1;
3002     char *p;
3003
3004     meta_data_maps = grow_array(meta_data_maps, sizeof(*meta_data_maps),
3005                                 &nb_meta_data_maps, nb_meta_data_maps + 1);
3006
3007     m = &meta_data_maps[nb_meta_data_maps - 1][0];
3008     m->file = strtol(arg, &p, 0);
3009     parse_meta_type(p, &m->type, &m->index, &p);
3010     if (*p)
3011         p++;
3012
3013     m1 = &meta_data_maps[nb_meta_data_maps - 1][1];
3014     m1->file = strtol(p, &p, 0);
3015     parse_meta_type(p, &m1->type, &m1->index, &p);
3016
3017     if (m->type == 'g' || m1->type == 'g')
3018         metadata_global_autocopy = 0;
3019     if (m->type == 's' || m1->type == 's')
3020         metadata_streams_autocopy = 0;
3021     if (m->type == 'c' || m1->type == 'c')
3022         metadata_chapters_autocopy = 0;
3023 }
3024
3025 static void opt_map_meta_data(const char *arg)
3026 {
3027     fprintf(stderr, "-map_meta_data is deprecated and will be removed soon. "
3028                     "Use -map_metadata instead.\n");
3029     opt_map_metadata(arg);
3030 }
3031
3032 static void opt_map_chapters(const char *arg)
3033 {
3034     AVChapterMap *c;
3035     char *p;
3036
3037     chapter_maps = grow_array(chapter_maps, sizeof(*chapter_maps), &nb_chapter_maps,
3038                               nb_chapter_maps + 1);
3039     c = &chapter_maps[nb_chapter_maps - 1];
3040     c->out_file = strtol(arg, &p, 0);
3041     if (*p)
3042         p++;
3043
3044     c->in_file = strtol(p, &p, 0);
3045 }
3046
3047 static void opt_input_ts_scale(const char *arg)
3048 {
3049     unsigned int stream;
3050     double scale;
3051     char *p;
3052
3053     stream = strtol(arg, &p, 0);
3054     if (*p)
3055         p++;
3056     scale= strtod(p, &p);
3057
3058     if(stream >= MAX_STREAMS)
3059         ffmpeg_exit(1);
3060
3061     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);
3062     input_files_ts_scale[nb_input_files][stream]= scale;
3063 }
3064
3065 static int opt_recording_time(const char *opt, const char *arg)
3066 {
3067     recording_time = parse_time_or_die(opt, arg, 1);
3068     return 0;
3069 }
3070
3071 static int opt_start_time(const char *opt, const char *arg)
3072 {
3073     start_time = parse_time_or_die(opt, arg, 1);
3074     return 0;
3075 }
3076
3077 static int opt_recording_timestamp(const char *opt, const char *arg)
3078 {
3079     recording_timestamp = parse_time_or_die(opt, arg, 0) / 1000000;
3080     return 0;
3081 }
3082
3083 static int opt_input_ts_offset(const char *opt, const char *arg)
3084 {
3085     input_ts_offset = parse_time_or_die(opt, arg, 1);
3086     return 0;
3087 }
3088
3089 static enum CodecID find_codec_or_die(const char *name, int type, int encoder, int strict)
3090 {
3091     const char *codec_string = encoder ? "encoder" : "decoder";
3092     AVCodec *codec;
3093
3094     if(!name)
3095         return CODEC_ID_NONE;
3096     codec = encoder ?
3097         avcodec_find_encoder_by_name(name) :
3098         avcodec_find_decoder_by_name(name);
3099     if(!codec) {
3100         fprintf(stderr, "Unknown %s '%s'\n", codec_string, name);
3101         ffmpeg_exit(1);
3102     }
3103     if(codec->type != type) {
3104         fprintf(stderr, "Invalid %s type '%s'\n", codec_string, name);
3105         ffmpeg_exit(1);
3106     }
3107     if(codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
3108        strict > FF_COMPLIANCE_EXPERIMENTAL) {
3109         fprintf(stderr, "%s '%s' is experimental and might produce bad "
3110                 "results.\nAdd '-strict experimental' if you want to use it.\n",
3111                 codec_string, codec->name);
3112         codec = encoder ?
3113             avcodec_find_encoder(codec->id) :
3114             avcodec_find_decoder(codec->id);
3115         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
3116             fprintf(stderr, "Or use the non experimental %s '%s'.\n",
3117                     codec_string, codec->name);
3118         ffmpeg_exit(1);
3119     }
3120     return codec->id;
3121 }
3122
3123 static void opt_input_file(const char *filename)
3124 {
3125     AVFormatContext *ic;
3126     AVFormatParameters params, *ap = &params;
3127     AVInputFormat *file_iformat = NULL;
3128     int err, i, ret, rfps, rfps_base;
3129     int64_t timestamp;
3130
3131     if (last_asked_format) {
3132         if (!(file_iformat = av_find_input_format(last_asked_format))) {
3133             fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
3134             ffmpeg_exit(1);
3135         }
3136         last_asked_format = NULL;
3137     }
3138
3139     if (!strcmp(filename, "-"))
3140         filename = "pipe:";
3141
3142     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3143                     !strcmp(filename, "/dev/stdin");
3144
3145     /* get default parameters from command line */
3146     ic = avformat_alloc_context();
3147     if (!ic) {
3148         print_error(filename, AVERROR(ENOMEM));
3149         ffmpeg_exit(1);
3150     }
3151
3152     memset(ap, 0, sizeof(*ap));
3153     ap->prealloced_context = 1;
3154     ap->sample_rate = audio_sample_rate;
3155     ap->channels = audio_channels;
3156     ap->time_base.den = frame_rate.num;
3157     ap->time_base.num = frame_rate.den;
3158     ap->width = frame_width;
3159     ap->height = frame_height;
3160     ap->pix_fmt = frame_pix_fmt;
3161    // ap->sample_fmt = audio_sample_fmt; //FIXME:not implemented in libavformat
3162     ap->channel = video_channel;
3163     ap->standard = video_standard;
3164
3165     set_context_opts(ic, avformat_opts, AV_OPT_FLAG_DECODING_PARAM, NULL);
3166
3167     ic->video_codec_id   =
3168         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0,
3169                           avcodec_opts[AVMEDIA_TYPE_VIDEO   ]->strict_std_compliance);
3170     ic->audio_codec_id   =
3171         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0,
3172                           avcodec_opts[AVMEDIA_TYPE_AUDIO   ]->strict_std_compliance);
3173     ic->subtitle_codec_id=
3174         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0,
3175                           avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->strict_std_compliance);
3176     ic->flags |= AVFMT_FLAG_NONBLOCK;
3177
3178     /* open the input file with generic libav function */
3179     err = av_open_input_file(&ic, filename, file_iformat, 0, ap);
3180     if (err < 0) {
3181         print_error(filename, err);
3182         ffmpeg_exit(1);
3183     }
3184     if(opt_programid) {
3185         int i, j;
3186         int found=0;
3187         for(i=0; i<ic->nb_streams; i++){
3188             ic->streams[i]->discard= AVDISCARD_ALL;
3189         }
3190         for(i=0; i<ic->nb_programs; i++){
3191             AVProgram *p= ic->programs[i];
3192             if(p->id != opt_programid){
3193                 p->discard = AVDISCARD_ALL;
3194             }else{
3195                 found=1;
3196                 for(j=0; j<p->nb_stream_indexes; j++){
3197                     ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
3198                 }
3199             }
3200         }
3201         if(!found){
3202             fprintf(stderr, "Specified program id not found\n");
3203             ffmpeg_exit(1);
3204         }
3205         opt_programid=0;
3206     }
3207
3208     ic->loop_input = loop_input;
3209
3210     /* If not enough info to get the stream parameters, we decode the
3211        first frames to get it. (used in mpeg case for example) */
3212     ret = av_find_stream_info(ic);
3213     if (ret < 0 && verbose >= 0) {
3214         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3215         av_close_input_file(ic);
3216         ffmpeg_exit(1);
3217     }
3218
3219     timestamp = start_time;
3220     /* add the stream start time */
3221     if (ic->start_time != AV_NOPTS_VALUE)
3222         timestamp += ic->start_time;
3223
3224     /* if seeking requested, we execute it */
3225     if (start_time != 0) {
3226         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3227         if (ret < 0) {
3228             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3229                     filename, (double)timestamp / AV_TIME_BASE);
3230         }
3231         /* reset seek info */
3232         start_time = 0;
3233     }
3234
3235     /* update the current parameters so that they match the one of the input stream */
3236     for(i=0;i<ic->nb_streams;i++) {
3237         AVStream *st = ic->streams[i];
3238         AVCodecContext *dec = st->codec;
3239         avcodec_thread_init(dec, thread_count);
3240         input_codecs = grow_array(input_codecs, sizeof(*input_codecs), &nb_input_codecs, nb_input_codecs + 1);
3241         switch (dec->codec_type) {
3242         case AVMEDIA_TYPE_AUDIO:
3243             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(audio_codec_name);
3244             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]);
3245             //fprintf(stderr, "\nInput Audio channels: %d", dec->channels);
3246             channel_layout    = dec->channel_layout;
3247             audio_channels    = dec->channels;
3248             audio_sample_rate = dec->sample_rate;
3249             audio_sample_fmt  = dec->sample_fmt;
3250             if(audio_disable)
3251                 st->discard= AVDISCARD_ALL;
3252             /* Note that av_find_stream_info can add more streams, and we
3253              * currently have no chance of setting up lowres decoding
3254              * early enough for them. */
3255             if (dec->lowres)
3256                 audio_sample_rate >>= dec->lowres;
3257             break;
3258         case AVMEDIA_TYPE_VIDEO:
3259             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(video_codec_name);
3260             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]);
3261             frame_height = dec->height;
3262             frame_width  = dec->width;
3263             if(ic->streams[i]->sample_aspect_ratio.num)
3264                 frame_aspect_ratio=av_q2d(ic->streams[i]->sample_aspect_ratio);
3265             else
3266                 frame_aspect_ratio=av_q2d(dec->sample_aspect_ratio);
3267             frame_aspect_ratio *= (float) dec->width / dec->height;
3268             frame_pix_fmt = dec->pix_fmt;
3269             rfps      = ic->streams[i]->r_frame_rate.num;
3270             rfps_base = ic->streams[i]->r_frame_rate.den;
3271             if (dec->lowres) {
3272                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3273                 frame_height >>= dec->lowres;
3274                 frame_width  >>= dec->lowres;
3275                 dec->height = frame_height;
3276                 dec->width  = frame_width;
3277             }
3278             if(me_threshold)
3279                 dec->debug |= FF_DEBUG_MV;
3280
3281             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3282
3283                 if (verbose >= 0)
3284                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3285                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3286
3287                     (float)rfps / rfps_base, rfps, rfps_base);
3288             }
3289             /* update the current frame rate to match the stream frame rate */
3290             frame_rate.num = rfps;
3291             frame_rate.den = rfps_base;
3292
3293             if(video_disable)
3294                 st->discard= AVDISCARD_ALL;
3295             else if(video_discard)
3296                 st->discard= video_discard;
3297             break;
3298         case AVMEDIA_TYPE_DATA:
3299             break;
3300         case AVMEDIA_TYPE_SUBTITLE:
3301             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(subtitle_codec_name);
3302             if(subtitle_disable)
3303                 st->discard = AVDISCARD_ALL;
3304             break;
3305         case AVMEDIA_TYPE_ATTACHMENT:
3306         case AVMEDIA_TYPE_UNKNOWN:
3307             break;
3308         default:
3309             abort();
3310         }
3311     }
3312
3313     input_files[nb_input_files] = ic;
3314     input_files_ts_offset[nb_input_files] = input_ts_offset - (copy_ts ? 0 : timestamp);
3315     /* dump the file content */
3316     if (verbose >= 0)
3317         dump_format(ic, nb_input_files, filename, 0);
3318
3319     nb_input_files++;
3320
3321     video_channel = 0;
3322
3323     av_freep(&video_codec_name);
3324     av_freep(&audio_codec_name);
3325     av_freep(&subtitle_codec_name);
3326 }
3327
3328 static void check_audio_video_sub_inputs(int *has_video_ptr, int *has_audio_ptr,
3329                                          int *has_subtitle_ptr)
3330 {
3331     int has_video, has_audio, has_subtitle, i, j;
3332     AVFormatContext *ic;
3333
3334     has_video = 0;
3335     has_audio = 0;
3336     has_subtitle = 0;
3337     for(j=0;j<nb_input_files;j++) {
3338         ic = input_files[j];
3339         for(i=0;i<ic->nb_streams;i++) {
3340             AVCodecContext *enc = ic->streams[i]->codec;
3341             switch(enc->codec_type) {
3342             case AVMEDIA_TYPE_AUDIO:
3343                 has_audio = 1;
3344                 break;
3345             case AVMEDIA_TYPE_VIDEO:
3346                 has_video = 1;
3347                 break;
3348             case AVMEDIA_TYPE_SUBTITLE:
3349                 has_subtitle = 1;
3350                 break;
3351             case AVMEDIA_TYPE_DATA:
3352             case AVMEDIA_TYPE_ATTACHMENT:
3353             case AVMEDIA_TYPE_UNKNOWN:
3354                 break;
3355             default:
3356                 abort();
3357             }
3358         }
3359     }
3360     *has_video_ptr = has_video;
3361     *has_audio_ptr = has_audio;
3362     *has_subtitle_ptr = has_subtitle;
3363 }
3364
3365 static void new_video_stream(AVFormatContext *oc, int file_idx)
3366 {
3367     AVStream *st;
3368     AVOutputStream *ost;
3369     AVCodecContext *video_enc;
3370     enum CodecID codec_id = CODEC_ID_NONE;
3371     AVCodec *codec= NULL;
3372
3373     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3374     if (!st) {
3375         fprintf(stderr, "Could not alloc stream\n");
3376         ffmpeg_exit(1);
3377     }
3378     ost = new_output_stream(oc, file_idx);
3379
3380     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3381     if(!video_stream_copy){
3382         if (video_codec_name) {
3383             codec_id = find_codec_or_die(video_codec_name, AVMEDIA_TYPE_VIDEO, 1,
3384                                          avcodec_opts[AVMEDIA_TYPE_VIDEO]->strict_std_compliance);
3385             codec = avcodec_find_encoder_by_name(video_codec_name);
3386             output_codecs[nb_output_codecs-1] = codec;
3387         } else {
3388             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_VIDEO);
3389             codec = avcodec_find_encoder(codec_id);
3390         }
3391     }
3392
3393     avcodec_get_context_defaults3(st->codec, codec);
3394     ost->bitstream_filters = video_bitstream_filters;
3395     video_bitstream_filters= NULL;
3396
3397     avcodec_thread_init(st->codec, thread_count);
3398
3399     video_enc = st->codec;
3400
3401     if(video_codec_tag)
3402         video_enc->codec_tag= video_codec_tag;
3403
3404     if(   (video_global_header&1)
3405        || (video_global_header==0 && (oc->oformat->flags & AVFMT_GLOBALHEADER))){
3406         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3407         avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3408     }
3409     if(video_global_header&2){
3410         video_enc->flags2 |= CODEC_FLAG2_LOCAL_HEADER;
3411         avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags2|= CODEC_FLAG2_LOCAL_HEADER;
3412     }
3413
3414     if (video_stream_copy) {
3415         st->stream_copy = 1;
3416         video_enc->codec_type = AVMEDIA_TYPE_VIDEO;
3417         video_enc->sample_aspect_ratio =
3418         st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3419     } else {
3420         const char *p;
3421         int i;
3422         AVRational fps= frame_rate.num ? frame_rate : (AVRational){25,1};
3423
3424         video_enc->codec_id = codec_id;
3425         set_context_opts(video_enc, avcodec_opts[AVMEDIA_TYPE_VIDEO], AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3426
3427         if (codec && codec->supported_framerates && !force_fps)
3428             fps = codec->supported_framerates[av_find_nearest_q_idx(fps, codec->supported_framerates)];
3429         video_enc->time_base.den = fps.num;
3430         video_enc->time_base.num = fps.den;
3431
3432         video_enc->width = frame_width;
3433         video_enc->height = frame_height;
3434         video_enc->sample_aspect_ratio = av_d2q(frame_aspect_ratio*video_enc->height/video_enc->width, 255);
3435         video_enc->pix_fmt = frame_pix_fmt;
3436         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3437
3438         choose_pixel_fmt(st, codec);
3439
3440         if (intra_only)
3441             video_enc->gop_size = 0;
3442         if (video_qscale || same_quality) {
3443             video_enc->flags |= CODEC_FLAG_QSCALE;
3444             video_enc->global_quality=
3445                 st->quality = FF_QP2LAMBDA * video_qscale;
3446         }
3447
3448         if(intra_matrix)
3449             video_enc->intra_matrix = intra_matrix;
3450         if(inter_matrix)
3451             video_enc->inter_matrix = inter_matrix;
3452
3453         p= video_rc_override_string;
3454         for(i=0; p; i++){
3455             int start, end, q;
3456             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3457             if(e!=3){
3458                 fprintf(stderr, "error parsing rc_override\n");
3459                 ffmpeg_exit(1);
3460             }
3461             video_enc->rc_override=
3462                 av_realloc(video_enc->rc_override,
3463                            sizeof(RcOverride)*(i+1));
3464             video_enc->rc_override[i].start_frame= start;
3465             video_enc->rc_override[i].end_frame  = end;
3466             if(q>0){
3467                 video_enc->rc_override[i].qscale= q;
3468                 video_enc->rc_override[i].quality_factor= 1.0;
3469             }
3470             else{
3471                 video_enc->rc_override[i].qscale= 0;
3472                 video_enc->rc_override[i].quality_factor= -q/100.0;
3473             }
3474             p= strchr(p, '/');
3475             if(p) p++;
3476         }
3477         video_enc->rc_override_count=i;
3478         if (!video_enc->rc_initial_buffer_occupancy)
3479             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3480         video_enc->me_threshold= me_threshold;
3481         video_enc->intra_dc_precision= intra_dc_precision - 8;
3482
3483         if (do_psnr)
3484             video_enc->flags|= CODEC_FLAG_PSNR;
3485
3486         /* two pass mode */
3487         if (do_pass) {
3488             if (do_pass == 1) {
3489                 video_enc->flags |= CODEC_FLAG_PASS1;
3490             } else {
3491                 video_enc->flags |= CODEC_FLAG_PASS2;
3492             }
3493         }
3494
3495         if (forced_key_frames)
3496             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3497     }
3498     if (video_language) {
3499         av_metadata_set2(&st->metadata, "language", video_language, 0);
3500         av_freep(&video_language);
3501     }
3502
3503     /* reset some key parameters */
3504     video_disable = 0;
3505     av_freep(&video_codec_name);
3506     av_freep(&forced_key_frames);
3507     video_stream_copy = 0;
3508     frame_pix_fmt = PIX_FMT_NONE;
3509 }
3510
3511 static void new_audio_stream(AVFormatContext *oc, int file_idx)
3512 {
3513     AVStream *st;
3514     AVOutputStream *ost;
3515     AVCodec *codec= NULL;
3516     AVCodecContext *audio_enc;
3517     enum CodecID codec_id = CODEC_ID_NONE;
3518
3519     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3520     if (!st) {
3521         fprintf(stderr, "Could not alloc stream\n");
3522         ffmpeg_exit(1);
3523     }
3524     ost = new_output_stream(oc, file_idx);
3525
3526     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3527     if(!audio_stream_copy){
3528         if (audio_codec_name) {
3529             codec_id = find_codec_or_die(audio_codec_name, AVMEDIA_TYPE_AUDIO, 1,
3530                                          avcodec_opts[AVMEDIA_TYPE_AUDIO]->strict_std_compliance);
3531             codec = avcodec_find_encoder_by_name(audio_codec_name);
3532             output_codecs[nb_output_codecs-1] = codec;
3533         } else {
3534             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_AUDIO);
3535             codec = avcodec_find_encoder(codec_id);
3536         }
3537     }
3538
3539     avcodec_get_context_defaults3(st->codec, codec);
3540
3541     ost->bitstream_filters = audio_bitstream_filters;
3542     audio_bitstream_filters= NULL;
3543
3544     avcodec_thread_init(st->codec, thread_count);
3545
3546     audio_enc = st->codec;
3547     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3548
3549     if(audio_codec_tag)
3550         audio_enc->codec_tag= audio_codec_tag;
3551
3552     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3553         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3554         avcodec_opts[AVMEDIA_TYPE_AUDIO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3555     }
3556     if (audio_stream_copy) {
3557         st->stream_copy = 1;
3558         audio_enc->channels = audio_channels;
3559         audio_enc->sample_rate = audio_sample_rate;
3560     } else {
3561         audio_enc->codec_id = codec_id;
3562         set_context_opts(audio_enc, avcodec_opts[AVMEDIA_TYPE_AUDIO], AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3563
3564         if (audio_qscale > QSCALE_NONE) {
3565             audio_enc->flags |= CODEC_FLAG_QSCALE;
3566             audio_enc->global_quality = st->quality = FF_QP2LAMBDA * audio_qscale;
3567         }
3568         audio_enc->channels = audio_channels;
3569         audio_enc->sample_fmt = audio_sample_fmt;
3570         audio_enc->sample_rate = audio_sample_rate;
3571         audio_enc->channel_layout = channel_layout;
3572         if (av_get_channel_layout_nb_channels(channel_layout) != audio_channels)
3573             audio_enc->channel_layout = 0;
3574         choose_sample_fmt(st, codec);
3575         choose_sample_rate(st, codec);
3576     }
3577     audio_enc->time_base= (AVRational){1, audio_sample_rate};
3578     if (audio_language) {
3579         av_metadata_set2(&st->metadata, "language", audio_language, 0);
3580         av_freep(&audio_language);
3581     }
3582
3583     /* reset some key parameters */
3584     audio_disable = 0;
3585     av_freep(&audio_codec_name);
3586     audio_stream_copy = 0;
3587 }
3588
3589 static void new_subtitle_stream(AVFormatContext *oc, int file_idx)
3590 {
3591     AVStream *st;
3592     AVOutputStream *ost;
3593     AVCodec *codec=NULL;
3594     AVCodecContext *subtitle_enc;
3595     enum CodecID codec_id = CODEC_ID_NONE;
3596
3597     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3598     if (!st) {
3599         fprintf(stderr, "Could not alloc stream\n");
3600         ffmpeg_exit(1);
3601     }
3602     ost = new_output_stream(oc, file_idx);
3603     subtitle_enc = st->codec;
3604     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3605     if(!subtitle_stream_copy){
3606         if (subtitle_codec_name) {
3607             codec_id = find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 1,
3608                                          avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->strict_std_compliance);
3609             codec= output_codecs[nb_output_codecs-1] = avcodec_find_encoder_by_name(subtitle_codec_name);
3610         } else {
3611             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_SUBTITLE);
3612             codec = avcodec_find_encoder(codec_id);
3613         }
3614     }
3615     avcodec_get_context_defaults3(st->codec, codec);
3616
3617     ost->bitstream_filters = subtitle_bitstream_filters;
3618     subtitle_bitstream_filters= NULL;
3619
3620     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3621
3622     if(subtitle_codec_tag)
3623         subtitle_enc->codec_tag= subtitle_codec_tag;
3624
3625     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3626         subtitle_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3627         avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->flags |= CODEC_FLAG_GLOBAL_HEADER;
3628     }
3629     if (subtitle_stream_copy) {
3630         st->stream_copy = 1;
3631     } else {
3632         subtitle_enc->codec_id = codec_id;
3633         set_context_opts(avcodec_opts[AVMEDIA_TYPE_SUBTITLE], subtitle_enc, AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3634     }
3635
3636     if (subtitle_language) {
3637         av_metadata_set2(&st->metadata, "language", subtitle_language, 0);
3638         av_freep(&subtitle_language);
3639     }
3640
3641     subtitle_disable = 0;
3642     av_freep(&subtitle_codec_name);
3643     subtitle_stream_copy = 0;
3644 }
3645
3646 static int opt_new_stream(const char *opt, const char *arg)
3647 {
3648     AVFormatContext *oc;
3649     int file_idx = nb_output_files - 1;
3650     if (nb_output_files <= 0) {
3651         fprintf(stderr, "At least one output file must be specified\n");
3652         ffmpeg_exit(1);
3653     }
3654     oc = output_files[file_idx];
3655
3656     if      (!strcmp(opt, "newvideo"   )) new_video_stream   (oc, file_idx);
3657     else if (!strcmp(opt, "newaudio"   )) new_audio_stream   (oc, file_idx);
3658     else if (!strcmp(opt, "newsubtitle")) new_subtitle_stream(oc, file_idx);
3659     else av_assert0(0);
3660     return 0;
3661 }
3662
3663 /* arg format is "output-stream-index:streamid-value". */
3664 static int opt_streamid(const char *opt, const char *arg)
3665 {
3666     int idx;
3667     char *p;
3668     char idx_str[16];
3669
3670     strncpy(idx_str, arg, sizeof(idx_str));
3671     idx_str[sizeof(idx_str)-1] = '\0';