ffmpeg: add -map_channel option.
[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 #include "config.h"
23 #include <ctype.h>
24 #include <string.h>
25 #include <math.h>
26 #include <stdlib.h>
27 #include <errno.h>
28 #include <signal.h>
29 #include <limits.h>
30 #include <unistd.h>
31 #include "libavformat/avformat.h"
32 #include "libavdevice/avdevice.h"
33 #include "libswscale/swscale.h"
34 #include "libavutil/opt.h"
35 #include "libavcodec/audioconvert.h"
36 #include "libavutil/audioconvert.h"
37 #include "libavutil/parseutils.h"
38 #include "libavutil/samplefmt.h"
39 #include "libavutil/colorspace.h"
40 #include "libavutil/fifo.h"
41 #include "libavutil/intreadwrite.h"
42 #include "libavutil/dict.h"
43 #include "libavutil/mathematics.h"
44 #include "libavutil/pixdesc.h"
45 #include "libavutil/avstring.h"
46 #include "libavutil/libm.h"
47 #include "libavformat/os_support.h"
48 #include "libswresample/swresample.h"
49
50 #include "libavformat/ffm.h" // not public API
51
52 #if CONFIG_AVFILTER
53 # include "libavfilter/avcodec.h"
54 # include "libavfilter/avfilter.h"
55 # include "libavfilter/avfiltergraph.h"
56 # include "libavfilter/buffersink.h"
57 # include "libavfilter/vsrc_buffer.h"
58 #endif
59
60 #if HAVE_SYS_RESOURCE_H
61 #include <sys/types.h>
62 #include <sys/time.h>
63 #include <sys/resource.h>
64 #elif HAVE_GETPROCESSTIMES
65 #include <windows.h>
66 #endif
67 #if HAVE_GETPROCESSMEMORYINFO
68 #include <windows.h>
69 #include <psapi.h>
70 #endif
71
72 #if HAVE_SYS_SELECT_H
73 #include <sys/select.h>
74 #endif
75
76 #if HAVE_TERMIOS_H
77 #include <fcntl.h>
78 #include <sys/ioctl.h>
79 #include <sys/time.h>
80 #include <termios.h>
81 #elif HAVE_KBHIT
82 #include <conio.h>
83 #endif
84 #include <time.h>
85
86 #include "cmdutils.h"
87
88 #include "libavutil/avassert.h"
89
90 const char program_name[] = "ffmpeg";
91 const int program_birth_year = 2000;
92
93 /* select an input stream for an output stream */
94 typedef struct StreamMap {
95     int disabled;           /** 1 is this mapping is disabled by a negative map */
96     int file_index;
97     int stream_index;
98     int sync_file_index;
99     int sync_stream_index;
100 } StreamMap;
101
102 typedef struct {
103     int  file_idx,  stream_idx,  channel_idx; // input
104     int ofile_idx, ostream_idx;               // output
105 } AudioChannelMap;
106
107 /**
108  * select an input file for an output file
109  */
110 typedef struct MetadataMap {
111     int  file;      ///< file index
112     char type;      ///< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
113     int  index;     ///< stream/chapter/program number
114 } MetadataMap;
115
116 static const OptionDef options[];
117
118 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
119
120 static int frame_bits_per_raw_sample = 0;
121 static int video_discard = 0;
122 static int same_quant = 0;
123 static int do_deinterlace = 0;
124 static int intra_dc_precision = 8;
125 static int loop_input = 0;
126 static int loop_output = AVFMT_NOOUTPUTLOOP;
127 static int qp_hist = 0;
128 static int intra_only = 0;
129 static const char *video_codec_name    = NULL;
130 static const char *audio_codec_name    = NULL;
131 static const char *subtitle_codec_name = NULL;
132
133 static int file_overwrite = 0;
134 static int do_benchmark = 0;
135 static int do_hex_dump = 0;
136 static int do_pkt_dump = 0;
137 static int do_pass = 0;
138 static const char *pass_logfilename_prefix;
139 static int video_sync_method= -1;
140 static int audio_sync_method= 0;
141 static float audio_drift_threshold= 0.1;
142 static int copy_ts= 0;
143 static int copy_tb= 0;
144 static int opt_shortest = 0;
145 static char *vstats_filename;
146 static FILE *vstats_file;
147 static int copy_initial_nonkeyframes = 0;
148
149 static int audio_volume = 256;
150
151 static int exit_on_error = 0;
152 static int using_stdin = 0;
153 static int run_as_daemon  = 0;
154 static volatile int received_nb_signals = 0;
155 static int64_t video_size = 0;
156 static int64_t audio_size = 0;
157 static int64_t extra_size = 0;
158 static int nb_frames_dup = 0;
159 static int nb_frames_drop = 0;
160 static int input_sync;
161
162 static float dts_delta_threshold = 10;
163
164 static int print_stats = 1;
165
166 static uint8_t *audio_buf;
167 static uint8_t *audio_out;
168 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
169
170 static void *samples;
171 static uint8_t *input_tmp= NULL;
172
173 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
174
175 typedef struct InputStream {
176     int file_index;
177     AVStream *st;
178     int discard;             /* true if stream data should be discarded */
179     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
180     AVCodec *dec;
181
182     int64_t       start;     /* time when read started */
183     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
184                                 is not defined */
185     int64_t       pts;       /* current pts */
186     double ts_scale;
187     int is_start;            /* is 1 at the start and after a discontinuity */
188     int showed_multi_packet_warning;
189     AVDictionary *opts;
190 } InputStream;
191
192 typedef struct InputFile {
193     AVFormatContext *ctx;
194     int eof_reached;      /* true if eof reached */
195     int ist_index;        /* index of first stream in input_streams */
196     int buffer_size;      /* current total buffer size */
197     int64_t ts_offset;
198     int nb_streams;       /* number of stream that ffmpeg is aware of; may be different
199                              from ctx.nb_streams if new streams appear during av_read_frame() */
200     int rate_emu;
201 } InputFile;
202
203 typedef struct OutputStream {
204     int file_index;          /* file index */
205     int index;               /* stream index in the output file */
206     int source_index;        /* InputStream index */
207     AVStream *st;            /* stream in the output file */
208     int encoding_needed;     /* true if encoding needed for this stream */
209     int frame_number;
210     /* input pts and corresponding output pts
211        for A/V sync */
212     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
213     struct InputStream *sync_ist; /* input stream to sync against */
214     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
215     AVBitStreamFilterContext *bitstream_filters;
216     AVCodec *enc;
217     int64_t max_frames;
218
219     /* video only */
220     int video_resample;
221     AVFrame resample_frame;              /* temporary frame for image resampling */
222     struct SwsContext *img_resample_ctx; /* for image resampling */
223     int resample_height;
224     int resample_width;
225     int resample_pix_fmt;
226     AVRational frame_rate;
227     int force_fps;
228     int top_field_first;
229
230     float frame_aspect_ratio;
231
232     /* forced key frames */
233     int64_t *forced_kf_pts;
234     int forced_kf_count;
235     int forced_kf_index;
236
237     /* audio only */
238     int audio_resample;
239     int audio_channels_map[SWR_CH_MAX];  ///< list of the channels id to pick from the source stream
240     int audio_channels_mapped;           ///< number of channels in audio_channels_map
241     int resample_sample_fmt;
242     int resample_channels;
243     int resample_sample_rate;
244     float rematrix_volume;
245     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
246     FILE *logfile;
247
248     struct SwrContext *swr;
249
250 #if CONFIG_AVFILTER
251     AVFilterContext *output_video_filter;
252     AVFilterContext *input_video_filter;
253     AVFilterBufferRef *picref;
254     char *avfilter;
255     AVFilterGraph *graph;
256 #endif
257
258    int64_t sws_flags;
259    AVDictionary *opts;
260    int is_past_recording_time;
261    int stream_copy;
262    const char *attachment_filename;
263 } OutputStream;
264
265
266 #if HAVE_TERMIOS_H
267
268 /* init terminal so that we can grab keys */
269 static struct termios oldtty;
270 #endif
271
272 typedef struct OutputFile {
273     AVFormatContext *ctx;
274     AVDictionary *opts;
275     int ost_index;       /* index of the first stream in output_streams */
276     int64_t recording_time; /* desired length of the resulting file in microseconds */
277     int64_t start_time;     /* start time in microseconds */
278     uint64_t limit_filesize;
279 } OutputFile;
280
281 static InputStream *input_streams = NULL;
282 static int         nb_input_streams = 0;
283 static InputFile   *input_files   = NULL;
284 static int         nb_input_files   = 0;
285
286 static OutputStream *output_streams = NULL;
287 static int        nb_output_streams = 0;
288 static OutputFile   *output_files   = NULL;
289 static int        nb_output_files   = 0;
290
291 typedef struct OptionsContext {
292     /* input/output options */
293     int64_t start_time;
294     const char *format;
295
296     SpecifierOpt *codec_names;
297     int        nb_codec_names;
298     SpecifierOpt *audio_channels;
299     int        nb_audio_channels;
300     SpecifierOpt *audio_sample_rate;
301     int        nb_audio_sample_rate;
302     SpecifierOpt *rematrix_volume;
303     int        nb_rematrix_volume;
304     SpecifierOpt *frame_rates;
305     int        nb_frame_rates;
306     SpecifierOpt *frame_sizes;
307     int        nb_frame_sizes;
308     SpecifierOpt *frame_pix_fmts;
309     int        nb_frame_pix_fmts;
310
311     /* input options */
312     int64_t input_ts_offset;
313     int rate_emu;
314
315     SpecifierOpt *ts_scale;
316     int        nb_ts_scale;
317     SpecifierOpt *dump_attachment;
318     int        nb_dump_attachment;
319
320     /* output options */
321     StreamMap *stream_maps;
322     int     nb_stream_maps;
323     AudioChannelMap *audio_channel_maps; ///< one info entry per -map_channel
324     int           nb_audio_channel_maps; ///< number of (valid) -map_channel settings
325     /* first item specifies output metadata, second is input */
326     MetadataMap (*meta_data_maps)[2];
327     int nb_meta_data_maps;
328     int metadata_global_manual;
329     int metadata_streams_manual;
330     int metadata_chapters_manual;
331     const char **attachments;
332     int       nb_attachments;
333
334     int chapters_input_file;
335
336     int64_t recording_time;
337     uint64_t limit_filesize;
338     float mux_preload;
339     float mux_max_delay;
340
341     int video_disable;
342     int audio_disable;
343     int subtitle_disable;
344     int data_disable;
345
346     /* indexed by output file stream index */
347     int   *streamid_map;
348     int nb_streamid_map;
349
350     SpecifierOpt *metadata;
351     int        nb_metadata;
352     SpecifierOpt *max_frames;
353     int        nb_max_frames;
354     SpecifierOpt *bitstream_filters;
355     int        nb_bitstream_filters;
356     SpecifierOpt *codec_tags;
357     int        nb_codec_tags;
358     SpecifierOpt *sample_fmts;
359     int        nb_sample_fmts;
360     SpecifierOpt *qscale;
361     int        nb_qscale;
362     SpecifierOpt *forced_key_frames;
363     int        nb_forced_key_frames;
364     SpecifierOpt *force_fps;
365     int        nb_force_fps;
366     SpecifierOpt *frame_aspect_ratios;
367     int        nb_frame_aspect_ratios;
368     SpecifierOpt *rc_overrides;
369     int        nb_rc_overrides;
370     SpecifierOpt *intra_matrices;
371     int        nb_intra_matrices;
372     SpecifierOpt *inter_matrices;
373     int        nb_inter_matrices;
374     SpecifierOpt *top_field_first;
375     int        nb_top_field_first;
376     SpecifierOpt *presets;
377     int        nb_presets;
378 #if CONFIG_AVFILTER
379     SpecifierOpt *filters;
380     int        nb_filters;
381 #endif
382 } OptionsContext;
383
384 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
385 {\
386     int i, ret;\
387     for (i = 0; i < o->nb_ ## name; i++) {\
388         char *spec = o->name[i].specifier;\
389         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
390             outvar = o->name[i].u.type;\
391         else if (ret < 0)\
392             exit_program(1);\
393     }\
394 }
395
396 static void reset_options(OptionsContext *o, int is_input)
397 {
398     const OptionDef *po = options;
399     OptionsContext bak= *o;
400
401     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
402     while (po->name) {
403         void *dst = (uint8_t*)o + po->u.off;
404
405         if (po->flags & OPT_SPEC) {
406             SpecifierOpt **so = dst;
407             int i, *count = (int*)(so + 1);
408             for (i = 0; i < *count; i++) {
409                 av_freep(&(*so)[i].specifier);
410                 if (po->flags & OPT_STRING)
411                     av_freep(&(*so)[i].u.str);
412             }
413             av_freep(so);
414             *count = 0;
415         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
416             av_freep(dst);
417         po++;
418     }
419
420     av_freep(&o->stream_maps);
421     av_freep(&o->audio_channel_maps);
422     av_freep(&o->meta_data_maps);
423     av_freep(&o->streamid_map);
424
425     memset(o, 0, sizeof(*o));
426
427     if(is_input) o->recording_time = bak.recording_time;
428     else         o->recording_time = INT64_MAX;
429     o->mux_max_delay  = 0.7;
430     o->limit_filesize = UINT64_MAX;
431     o->chapters_input_file = INT_MAX;
432
433     uninit_opts();
434     init_opts();
435 }
436
437 #if CONFIG_AVFILTER
438
439 static int configure_video_filters(InputStream *ist, OutputStream *ost)
440 {
441     AVFilterContext *last_filter, *filter;
442     /** filter graph containing all filters including input & output */
443     AVCodecContext *codec = ost->st->codec;
444     AVCodecContext *icodec = ist->st->codec;
445     enum PixelFormat pix_fmts[] = { codec->pix_fmt, PIX_FMT_NONE };
446     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
447     AVRational sample_aspect_ratio;
448     char args[255];
449     int ret;
450
451     ost->graph = avfilter_graph_alloc();
452
453     if (ist->st->sample_aspect_ratio.num){
454         sample_aspect_ratio = ist->st->sample_aspect_ratio;
455     }else
456         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
457
458     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
459              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
460              sample_aspect_ratio.num, sample_aspect_ratio.den);
461
462     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
463                                        "src", args, NULL, ost->graph);
464     if (ret < 0)
465         return ret;
466 #if FF_API_OLD_VSINK_API
467     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
468                                        "out", NULL, pix_fmts, ost->graph);
469 #else
470     buffersink_params->pixel_fmts = pix_fmts;
471     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
472                                        "out", NULL, buffersink_params, ost->graph);
473 #endif
474     av_freep(&buffersink_params);
475     if (ret < 0)
476         return ret;
477     last_filter = ost->input_video_filter;
478
479     if (codec->width  != icodec->width || codec->height != icodec->height) {
480         snprintf(args, 255, "%d:%d:flags=0x%X",
481                  codec->width,
482                  codec->height,
483                  (unsigned)ost->sws_flags);
484         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
485                                                 NULL, args, NULL, ost->graph)) < 0)
486             return ret;
487         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
488             return ret;
489         last_filter = filter;
490     }
491
492     snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
493     ost->graph->scale_sws_opts = av_strdup(args);
494
495     if (ost->avfilter) {
496         AVFilterInOut *outputs = avfilter_inout_alloc();
497         AVFilterInOut *inputs  = avfilter_inout_alloc();
498
499         outputs->name    = av_strdup("in");
500         outputs->filter_ctx = last_filter;
501         outputs->pad_idx = 0;
502         outputs->next    = NULL;
503
504         inputs->name    = av_strdup("out");
505         inputs->filter_ctx = ost->output_video_filter;
506         inputs->pad_idx = 0;
507         inputs->next    = NULL;
508
509         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, &inputs, &outputs, NULL)) < 0)
510             return ret;
511         av_freep(&ost->avfilter);
512     } else {
513         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
514             return ret;
515     }
516
517     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
518         return ret;
519
520     codec->width  = ost->output_video_filter->inputs[0]->w;
521     codec->height = ost->output_video_filter->inputs[0]->h;
522     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
523         ost->frame_aspect_ratio ? // overridden by the -aspect cli option
524         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
525         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
526
527     return 0;
528 }
529 #endif /* CONFIG_AVFILTER */
530
531 static void term_exit(void)
532 {
533     av_log(NULL, AV_LOG_QUIET, "%s", "");
534 #if HAVE_TERMIOS_H
535     if(!run_as_daemon)
536         tcsetattr (0, TCSANOW, &oldtty);
537 #endif
538 }
539
540 static volatile int received_sigterm = 0;
541
542 static void sigterm_handler(int sig)
543 {
544     received_sigterm = sig;
545     received_nb_signals++;
546     term_exit();
547 }
548
549 static void term_init(void)
550 {
551 #if HAVE_TERMIOS_H
552     if(!run_as_daemon){
553     struct termios tty;
554
555     tcgetattr (0, &tty);
556     oldtty = tty;
557     atexit(term_exit);
558
559     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
560                           |INLCR|IGNCR|ICRNL|IXON);
561     tty.c_oflag |= OPOST;
562     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
563     tty.c_cflag &= ~(CSIZE|PARENB);
564     tty.c_cflag |= CS8;
565     tty.c_cc[VMIN] = 1;
566     tty.c_cc[VTIME] = 0;
567
568     tcsetattr (0, TCSANOW, &tty);
569     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
570     }
571 #endif
572
573     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
574     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
575 #ifdef SIGXCPU
576     signal(SIGXCPU, sigterm_handler);
577 #endif
578 }
579
580 /* read a key without blocking */
581 static int read_key(void)
582 {
583     unsigned char ch;
584 #if HAVE_TERMIOS_H
585     int n = 1;
586     struct timeval tv;
587     fd_set rfds;
588
589     FD_ZERO(&rfds);
590     FD_SET(0, &rfds);
591     tv.tv_sec = 0;
592     tv.tv_usec = 0;
593     n = select(1, &rfds, NULL, NULL, &tv);
594     if (n > 0) {
595         n = read(0, &ch, 1);
596         if (n == 1)
597             return ch;
598
599         return n;
600     }
601 #elif HAVE_KBHIT
602 #    if HAVE_PEEKNAMEDPIPE
603     static int is_pipe;
604     static HANDLE input_handle;
605     DWORD dw, nchars;
606     if(!input_handle){
607         input_handle = GetStdHandle(STD_INPUT_HANDLE);
608         is_pipe = !GetConsoleMode(input_handle, &dw);
609     }
610
611     if (stdin->_cnt > 0) {
612         read(0, &ch, 1);
613         return ch;
614     }
615     if (is_pipe) {
616         /* When running under a GUI, you will end here. */
617         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
618             return -1;
619         //Read it
620         if(nchars != 0) {
621             read(0, &ch, 1);
622             return ch;
623         }else{
624             return -1;
625         }
626     }
627 #    endif
628     if(kbhit())
629         return(getch());
630 #endif
631     return -1;
632 }
633
634 static int decode_interrupt_cb(void)
635 {
636     return received_nb_signals > 1;
637 }
638
639 void exit_program(int ret)
640 {
641     int i;
642
643     /* close files */
644     for(i=0;i<nb_output_files;i++) {
645         AVFormatContext *s = output_files[i].ctx;
646         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
647             avio_close(s->pb);
648         avformat_free_context(s);
649         av_dict_free(&output_files[i].opts);
650     }
651     for(i=0;i<nb_input_files;i++) {
652         av_close_input_file(input_files[i].ctx);
653     }
654     for (i = 0; i < nb_input_streams; i++)
655         av_dict_free(&input_streams[i].opts);
656
657     if (vstats_file)
658         fclose(vstats_file);
659     av_free(vstats_filename);
660
661     av_freep(&input_streams);
662     av_freep(&input_files);
663     av_freep(&output_streams);
664     av_freep(&output_files);
665
666     uninit_opts();
667     av_free(audio_buf);
668     av_free(audio_out);
669     allocated_audio_buf_size= allocated_audio_out_size= 0;
670     av_free(samples);
671
672 #if CONFIG_AVFILTER
673     avfilter_uninit();
674 #endif
675
676     av_freep(&input_tmp);
677
678     if (received_sigterm) {
679         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
680                (int) received_sigterm);
681         exit (255);
682     }
683
684     exit(ret); /* not all OS-es handle main() return value */
685 }
686
687 static void assert_avoptions(AVDictionary *m)
688 {
689     AVDictionaryEntry *t;
690     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
691         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
692         exit_program(1);
693     }
694 }
695
696 static void assert_codec_experimental(AVCodecContext *c, int encoder)
697 {
698     const char *codec_string = encoder ? "encoder" : "decoder";
699     AVCodec *codec;
700     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
701         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
702         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
703                 "results.\nAdd '-strict experimental' if you want to use it.\n",
704                 codec_string, c->codec->name);
705         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
706         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
707             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
708                    codec_string, codec->name);
709         exit_program(1);
710     }
711 }
712
713 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
714 {
715     if(codec && codec->sample_fmts){
716         const enum AVSampleFormat *p= codec->sample_fmts;
717         for(; *p!=-1; p++){
718             if(*p == st->codec->sample_fmt)
719                 break;
720         }
721         if (*p == -1) {
722             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
723                 av_log(NULL, AV_LOG_ERROR, "Convertion will not be lossless'\n");
724             if(av_get_sample_fmt_name(st->codec->sample_fmt))
725             av_log(NULL, AV_LOG_WARNING,
726                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
727                    av_get_sample_fmt_name(st->codec->sample_fmt),
728                    codec->name,
729                    av_get_sample_fmt_name(codec->sample_fmts[0]));
730             st->codec->sample_fmt = codec->sample_fmts[0];
731         }
732     }
733 }
734
735 static void choose_sample_rate(AVStream *st, AVCodec *codec)
736 {
737     if(codec && codec->supported_samplerates){
738         const int *p= codec->supported_samplerates;
739         int best=0;
740         int best_dist=INT_MAX;
741         for(; *p; p++){
742             int dist= abs(st->codec->sample_rate - *p);
743             if(dist < best_dist){
744                 best_dist= dist;
745                 best= *p;
746             }
747         }
748         if(best_dist){
749             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
750         }
751         st->codec->sample_rate= best;
752     }
753 }
754
755 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
756 {
757     if(codec && codec->pix_fmts){
758         const enum PixelFormat *p= codec->pix_fmts;
759         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
760             if(st->codec->codec_id==CODEC_ID_MJPEG){
761                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
762             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
763                 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};
764             }
765         }
766         for(; *p!=-1; p++){
767             if(*p == st->codec->pix_fmt)
768                 break;
769         }
770         if (*p == -1) {
771             if(st->codec->pix_fmt != PIX_FMT_NONE)
772                 av_log(NULL, AV_LOG_WARNING,
773                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
774                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
775                         codec->name,
776                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
777             st->codec->pix_fmt = codec->pix_fmts[0];
778         }
779     }
780 }
781
782 static double get_sync_ipts(const OutputStream *ost)
783 {
784     const InputStream *ist = ost->sync_ist;
785     OutputFile *of = &output_files[ost->file_index];
786     return (double)(ist->pts - of->start_time)/AV_TIME_BASE;
787 }
788
789 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc)
790 {
791     int ret;
792
793     while(bsfc){
794         AVPacket new_pkt= *pkt;
795         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
796                                           &new_pkt.data, &new_pkt.size,
797                                           pkt->data, pkt->size,
798                                           pkt->flags & AV_PKT_FLAG_KEY);
799         if(a>0){
800             av_free_packet(pkt);
801             new_pkt.destruct= av_destruct_packet;
802         } else if(a<0){
803             av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
804                    bsfc->filter->name, pkt->stream_index,
805                    avctx->codec ? avctx->codec->name : "copy");
806             print_error("", a);
807             if (exit_on_error)
808                 exit_program(1);
809         }
810         *pkt= new_pkt;
811
812         bsfc= bsfc->next;
813     }
814
815     ret= av_interleaved_write_frame(s, pkt);
816     if(ret < 0){
817         print_error("av_interleaved_write_frame()", ret);
818         exit_program(1);
819     }
820 }
821
822 static void do_audio_out(AVFormatContext *s,
823                          OutputStream *ost,
824                          InputStream *ist,
825                          unsigned char *buf, int size)
826 {
827     uint8_t *buftmp;
828     int64_t audio_out_size, audio_buf_size;
829     int64_t allocated_for_size= size;
830
831     int size_out, frame_bytes, ret, resample_changed;
832     AVCodecContext *enc= ost->st->codec;
833     AVCodecContext *dec= ist->st->codec;
834     int osize = av_get_bytes_per_sample(enc->sample_fmt);
835     int isize = av_get_bytes_per_sample(dec->sample_fmt);
836     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
837
838 need_realloc:
839     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
840     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
841     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
842     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
843     audio_buf_size*= osize*enc->channels;
844
845     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
846     if(coded_bps > 8*osize)
847         audio_out_size= audio_out_size * coded_bps / (8*osize);
848     audio_out_size += FF_MIN_BUFFER_SIZE;
849
850     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
851         av_log(NULL, AV_LOG_FATAL, "Buffer sizes too large\n");
852         exit_program(1);
853     }
854
855     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
856     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
857     if (!audio_buf || !audio_out){
858         av_log(NULL, AV_LOG_FATAL, "Out of memory in do_audio_out\n");
859         exit_program(1);
860     }
861
862     if (enc->channels != dec->channels
863      || enc->sample_fmt != dec->sample_fmt)
864         ost->audio_resample = 1;
865
866     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
867                        ost->resample_channels    != dec->channels   ||
868                        ost->resample_sample_rate != dec->sample_rate;
869
870     if ((ost->audio_resample && !ost->swr) || resample_changed || ost->audio_channels_mapped) {
871         if (resample_changed) {
872             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",
873                    ist->file_index, ist->st->index,
874                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
875                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
876             ost->resample_sample_fmt  = dec->sample_fmt;
877             ost->resample_channels    = dec->channels;
878             ost->resample_sample_rate = dec->sample_rate;
879             swr_free(&ost->swr);
880         }
881         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
882         if (audio_sync_method <= 1 && !ost->audio_channels_mapped &&
883             ost->resample_sample_fmt  == enc->sample_fmt &&
884             ost->resample_channels    == enc->channels   &&
885             ost->resample_sample_rate == enc->sample_rate) {
886             //ost->swr = NULL;
887             ost->audio_resample = 0;
888         } else {
889             ost->swr = swr_alloc2(ost->swr,
890                                   enc->channel_layout, enc->sample_fmt, enc->sample_rate,
891                                   dec->channel_layout, dec->sample_fmt, dec->sample_rate,
892                                   ost->audio_channels_mapped ? ost->audio_channels_map : NULL,
893                                   0, NULL);
894             av_set_double(ost->swr, "rmvol", ost->rematrix_volume);
895             if (ost->audio_channels_mapped) {
896                 av_set_int(ost->swr, "icl", av_get_default_channel_layout(ost->audio_channels_mapped));
897                 av_set_int(ost->swr, "uch", ost->audio_channels_mapped);
898             }
899             av_set_int(ost->swr, "ich", dec->channels);
900             av_set_int(ost->swr, "och", enc->channels);
901             if(audio_sync_method>1) av_set_int(ost->swr, "flags", SWR_FLAG_RESAMPLE);
902             if(ost->swr && swr_init(ost->swr) < 0){
903                 av_log(NULL, AV_LOG_FATAL, "swr_init() failed\n");
904                 swr_free(&ost->swr);
905             }
906
907             if (!ost->swr) {
908                 av_log(NULL, AV_LOG_FATAL, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
909                         dec->channels, dec->sample_rate,
910                         enc->channels, enc->sample_rate);
911                 exit_program(1);
912             }
913         }
914     }
915
916     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
917
918     if(audio_sync_method){
919         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
920                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
921         double idelta= delta*dec->sample_rate / enc->sample_rate;
922         int byte_delta= ((int)idelta)*2*dec->channels;
923
924         //FIXME resample delay
925         if(fabs(delta) > 50){
926             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
927                 if(byte_delta < 0){
928                     byte_delta= FFMAX(byte_delta, -size);
929                     size += byte_delta;
930                     buf  -= byte_delta;
931                     av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n", (int)-delta);
932                     if(!size)
933                         return;
934                     ist->is_start=0;
935                 }else{
936                     input_tmp= av_realloc(input_tmp, byte_delta + size);
937
938                     if(byte_delta > allocated_for_size - size){
939                         allocated_for_size= byte_delta + (int64_t)size;
940                         goto need_realloc;
941                     }
942                     ist->is_start=0;
943
944                     memset(input_tmp, 0, byte_delta);
945                     memcpy(input_tmp + byte_delta, buf, size);
946                     buf= input_tmp;
947                     size += byte_delta;
948                     av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", (int)delta);
949                 }
950             }else if(audio_sync_method>1){
951                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
952                 av_assert0(ost->audio_resample);
953                 av_log(NULL, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n",
954                        delta, comp, enc->sample_rate);
955 //                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));
956                 swr_compensate(ost->swr, comp, enc->sample_rate);
957             }
958         }
959     }else
960         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
961                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
962
963     if (ost->audio_resample) {
964         buftmp = audio_buf;
965         size_out = swr_convert(ost->swr, (      uint8_t*[]){buftmp}, audio_buf_size / (enc->channels * osize),
966                                          (const uint8_t*[]){buf   }, size / (dec->channels * isize));
967         size_out = size_out * enc->channels * osize;
968     } else {
969         buftmp = buf;
970         size_out = size;
971     }
972
973     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
974
975     /* now encode as many frames as possible */
976     if (enc->frame_size > 1) {
977         /* output resampled raw samples */
978         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
979             av_log(NULL, AV_LOG_FATAL, "av_fifo_realloc2() failed\n");
980             exit_program(1);
981         }
982         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
983
984         frame_bytes = enc->frame_size * osize * enc->channels;
985
986         while (av_fifo_size(ost->fifo) >= frame_bytes) {
987             AVPacket pkt;
988             av_init_packet(&pkt);
989
990             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
991
992             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
993
994             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
995                                        (short *)audio_buf);
996             if (ret < 0) {
997                 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
998                 exit_program(1);
999             }
1000             audio_size += ret;
1001             pkt.stream_index= ost->index;
1002             pkt.data= audio_out;
1003             pkt.size= ret;
1004             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1005                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1006             pkt.flags |= AV_PKT_FLAG_KEY;
1007             write_frame(s, &pkt, enc, ost->bitstream_filters);
1008
1009             ost->sync_opts += enc->frame_size;
1010         }
1011     } else {
1012         AVPacket pkt;
1013         av_init_packet(&pkt);
1014
1015         ost->sync_opts += size_out / (osize * enc->channels);
1016
1017         /* output a pcm frame */
1018         /* determine the size of the coded buffer */
1019         size_out /= osize;
1020         if (coded_bps)
1021             size_out = size_out*coded_bps/8;
1022
1023         if(size_out > audio_out_size){
1024             av_log(NULL, AV_LOG_FATAL, "Internal error, buffer size too small\n");
1025             exit_program(1);
1026         }
1027
1028         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1029         ret = avcodec_encode_audio(enc, audio_out, size_out,
1030                                    (short *)buftmp);
1031         if (ret < 0) {
1032             av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1033             exit_program(1);
1034         }
1035         audio_size += ret;
1036         pkt.stream_index= ost->index;
1037         pkt.data= audio_out;
1038         pkt.size= ret;
1039         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1040             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1041         pkt.flags |= AV_PKT_FLAG_KEY;
1042         write_frame(s, &pkt, enc, ost->bitstream_filters);
1043     }
1044 }
1045
1046 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1047 {
1048     AVCodecContext *dec;
1049     AVPicture *picture2;
1050     AVPicture picture_tmp;
1051     uint8_t *buf = 0;
1052
1053     dec = ist->st->codec;
1054
1055     /* deinterlace : must be done before any resize */
1056     if (do_deinterlace) {
1057         int size;
1058
1059         /* create temporary picture */
1060         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1061         buf = av_malloc(size);
1062         if (!buf)
1063             return;
1064
1065         picture2 = &picture_tmp;
1066         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1067
1068         if(avpicture_deinterlace(picture2, picture,
1069                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1070             /* if error, do not deinterlace */
1071             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1072             av_free(buf);
1073             buf = NULL;
1074             picture2 = picture;
1075         }
1076     } else {
1077         picture2 = picture;
1078     }
1079
1080     if (picture != picture2)
1081         *picture = *picture2;
1082     *bufp = buf;
1083 }
1084
1085 static void do_subtitle_out(AVFormatContext *s,
1086                             OutputStream *ost,
1087                             InputStream *ist,
1088                             AVSubtitle *sub,
1089                             int64_t pts)
1090 {
1091     static uint8_t *subtitle_out = NULL;
1092     int subtitle_out_max_size = 1024 * 1024;
1093     int subtitle_out_size, nb, i;
1094     AVCodecContext *enc;
1095     AVPacket pkt;
1096
1097     if (pts == AV_NOPTS_VALUE) {
1098         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1099         if (exit_on_error)
1100             exit_program(1);
1101         return;
1102     }
1103
1104     enc = ost->st->codec;
1105
1106     if (!subtitle_out) {
1107         subtitle_out = av_malloc(subtitle_out_max_size);
1108     }
1109
1110     /* Note: DVB subtitle need one packet to draw them and one other
1111        packet to clear them */
1112     /* XXX: signal it in the codec context ? */
1113     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1114         nb = 2;
1115     else
1116         nb = 1;
1117
1118     for(i = 0; i < nb; i++) {
1119         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1120         // start_display_time is required to be 0
1121         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1122         sub->end_display_time -= sub->start_display_time;
1123         sub->start_display_time = 0;
1124         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1125                                                     subtitle_out_max_size, sub);
1126         if (subtitle_out_size < 0) {
1127             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1128             exit_program(1);
1129         }
1130
1131         av_init_packet(&pkt);
1132         pkt.stream_index = ost->index;
1133         pkt.data = subtitle_out;
1134         pkt.size = subtitle_out_size;
1135         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1136         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1137             /* XXX: the pts correction is handled here. Maybe handling
1138                it in the codec would be better */
1139             if (i == 0)
1140                 pkt.pts += 90 * sub->start_display_time;
1141             else
1142                 pkt.pts += 90 * sub->end_display_time;
1143         }
1144         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1145     }
1146 }
1147
1148 static int bit_buffer_size= 1024*256;
1149 static uint8_t *bit_buffer= NULL;
1150
1151 static void do_video_resample(OutputStream *ost,
1152                               InputStream *ist,
1153                               AVFrame *in_picture,
1154                               AVFrame **out_picture)
1155 {
1156 #if CONFIG_AVFILTER
1157     *out_picture = in_picture;
1158 #else
1159     AVCodecContext *dec = ist->st->codec;
1160     AVCodecContext *enc = ost->st->codec;
1161     int resample_changed = ost->resample_width   != dec->width  ||
1162                            ost->resample_height  != dec->height ||
1163                            ost->resample_pix_fmt != dec->pix_fmt;
1164
1165     *out_picture = in_picture;
1166     if (resample_changed) {
1167         av_log(NULL, AV_LOG_INFO,
1168                "Input stream #%d.%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1169                ist->file_index, ist->st->index,
1170                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1171                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1172         ost->resample_width   = dec->width;
1173         ost->resample_height  = dec->height;
1174         ost->resample_pix_fmt = dec->pix_fmt;
1175     }
1176
1177     ost->video_resample = dec->width   != enc->width  ||
1178                           dec->height  != enc->height ||
1179                           dec->pix_fmt != enc->pix_fmt;
1180
1181     if (ost->video_resample) {
1182         *out_picture = &ost->resample_frame;
1183         if (!ost->img_resample_ctx || resample_changed) {
1184             /* initialize the destination picture */
1185             if (!ost->resample_frame.data[0]) {
1186                 avcodec_get_frame_defaults(&ost->resample_frame);
1187                 if (avpicture_alloc((AVPicture *)&ost->resample_frame, enc->pix_fmt,
1188                                     enc->width, enc->height)) {
1189                     av_log(NULL, AV_LOG_FATAL, "Cannot allocate temp picture, check pix fmt\n");
1190                     exit_program(1);
1191                 }
1192             }
1193             /* initialize a new scaler context */
1194             sws_freeContext(ost->img_resample_ctx);
1195             ost->img_resample_ctx = sws_getContext(dec->width, dec->height, dec->pix_fmt,
1196                                                    enc->width, enc->height, enc->pix_fmt,
1197                                                    ost->sws_flags, NULL, NULL, NULL);
1198             if (ost->img_resample_ctx == NULL) {
1199                 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
1200                 exit_program(1);
1201             }
1202         }
1203         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1204               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1205     }
1206 #endif
1207 }
1208
1209
1210 static void do_video_out(AVFormatContext *s,
1211                          OutputStream *ost,
1212                          InputStream *ist,
1213                          AVFrame *in_picture,
1214                          int *frame_size, float quality)
1215 {
1216     int nb_frames, i, ret, format_video_sync;
1217     AVFrame *final_picture;
1218     AVCodecContext *enc;
1219     double sync_ipts;
1220     double duration = 0;
1221
1222     enc = ost->st->codec;
1223
1224     if (ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE) {
1225         duration = FFMAX(av_q2d(ist->st->time_base), av_q2d(ist->st->codec->time_base));
1226         if(ist->st->avg_frame_rate.num)
1227             duration= FFMAX(duration, 1/av_q2d(ist->st->avg_frame_rate));
1228
1229         duration /= av_q2d(enc->time_base);
1230     }
1231
1232     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1233
1234     /* by default, we output a single frame */
1235     nb_frames = 1;
1236
1237     *frame_size = 0;
1238
1239     format_video_sync = video_sync_method;
1240     if (format_video_sync < 0)
1241         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? 2 : 1;
1242
1243     if (format_video_sync) {
1244         double vdelta = sync_ipts - ost->sync_opts + duration;
1245         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1246         if (vdelta < -1.1)
1247             nb_frames = 0;
1248         else if (format_video_sync == 2) {
1249             if(vdelta<=-0.6){
1250                 nb_frames=0;
1251             }else if(vdelta>0.6)
1252                 ost->sync_opts= lrintf(sync_ipts);
1253         }else if (vdelta > 1.1)
1254             nb_frames = lrintf(vdelta);
1255 //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);
1256         if (nb_frames == 0){
1257             ++nb_frames_drop;
1258             av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1259         }else if (nb_frames > 1) {
1260             nb_frames_dup += nb_frames - 1;
1261             av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames-1);
1262         }
1263     }else
1264         ost->sync_opts= lrintf(sync_ipts);
1265
1266     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1267     if (nb_frames <= 0)
1268         return;
1269
1270     do_video_resample(ost, ist, in_picture, &final_picture);
1271
1272     /* duplicates frame if needed */
1273     for(i=0;i<nb_frames;i++) {
1274         AVPacket pkt;
1275         av_init_packet(&pkt);
1276         pkt.stream_index= ost->index;
1277
1278         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1279             /* raw pictures are written as AVPicture structure to
1280                avoid any copies. We support temporarily the older
1281                method. */
1282             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1283             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1284             pkt.data= (uint8_t *)final_picture;
1285             pkt.size=  sizeof(AVPicture);
1286             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1287             pkt.flags |= AV_PKT_FLAG_KEY;
1288
1289             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1290         } else {
1291             AVFrame big_picture;
1292
1293             big_picture= *final_picture;
1294             /* better than nothing: use input picture interlaced
1295                settings */
1296             big_picture.interlaced_frame = in_picture->interlaced_frame;
1297             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1298                 if (ost->top_field_first == -1)
1299                     big_picture.top_field_first = in_picture->top_field_first;
1300                 else
1301                     big_picture.top_field_first = !!ost->top_field_first;
1302             }
1303
1304             /* handles same_quant here. This is not correct because it may
1305                not be a global option */
1306             big_picture.quality = quality;
1307             if (!enc->me_threshold)
1308                 big_picture.pict_type = 0;
1309 //            big_picture.pts = AV_NOPTS_VALUE;
1310             big_picture.pts= ost->sync_opts;
1311 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1312 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1313             if (ost->forced_kf_index < ost->forced_kf_count &&
1314                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1315                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1316                 ost->forced_kf_index++;
1317             }
1318             ret = avcodec_encode_video(enc,
1319                                        bit_buffer, bit_buffer_size,
1320                                        &big_picture);
1321             if (ret < 0) {
1322                 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1323                 exit_program(1);
1324             }
1325
1326             if(ret>0){
1327                 pkt.data= bit_buffer;
1328                 pkt.size= ret;
1329                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1330                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1331 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1332    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1333    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1334
1335                 if(enc->coded_frame->key_frame)
1336                     pkt.flags |= AV_PKT_FLAG_KEY;
1337                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1338                 *frame_size = ret;
1339                 video_size += ret;
1340                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1341                 //        enc->frame_number-1, ret, enc->pict_type);
1342                 /* if two pass, output log */
1343                 if (ost->logfile && enc->stats_out) {
1344                     fprintf(ost->logfile, "%s", enc->stats_out);
1345                 }
1346             }
1347         }
1348         ost->sync_opts++;
1349         ost->frame_number++;
1350     }
1351 }
1352
1353 static double psnr(double d)
1354 {
1355     return -10.0*log(d)/log(10.0);
1356 }
1357
1358 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1359                            int frame_size)
1360 {
1361     AVCodecContext *enc;
1362     int frame_number;
1363     double ti1, bitrate, avg_bitrate;
1364
1365     /* this is executed just the first time do_video_stats is called */
1366     if (!vstats_file) {
1367         vstats_file = fopen(vstats_filename, "w");
1368         if (!vstats_file) {
1369             perror("fopen");
1370             exit_program(1);
1371         }
1372     }
1373
1374     enc = ost->st->codec;
1375     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1376         frame_number = ost->frame_number;
1377         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1378         if (enc->flags&CODEC_FLAG_PSNR)
1379             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1380
1381         fprintf(vstats_file,"f_size= %6d ", frame_size);
1382         /* compute pts value */
1383         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1384         if (ti1 < 0.01)
1385             ti1 = 0.01;
1386
1387         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1388         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1389         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1390             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1391         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1392     }
1393 }
1394
1395 static void print_report(OutputFile *output_files,
1396                          OutputStream *ost_table, int nb_ostreams,
1397                          int is_last_report, int64_t timer_start, int64_t cur_time)
1398 {
1399     char buf[1024];
1400     OutputStream *ost;
1401     AVFormatContext *oc;
1402     int64_t total_size;
1403     AVCodecContext *enc;
1404     int frame_number, vid, i;
1405     double bitrate;
1406     int64_t pts = INT64_MAX;
1407     static int64_t last_time = -1;
1408     static int qp_histogram[52];
1409     int hours, mins, secs, us;
1410
1411     if (!print_stats && !is_last_report)
1412         return;
1413
1414     if (!is_last_report) {
1415         if (last_time == -1) {
1416             last_time = cur_time;
1417             return;
1418         }
1419         if ((cur_time - last_time) < 500000)
1420             return;
1421         last_time = cur_time;
1422     }
1423
1424
1425     oc = output_files[0].ctx;
1426
1427     total_size = avio_size(oc->pb);
1428     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1429         total_size= avio_tell(oc->pb);
1430
1431     buf[0] = '\0';
1432     vid = 0;
1433     for(i=0;i<nb_ostreams;i++) {
1434         float q = -1;
1435         ost = &ost_table[i];
1436         enc = ost->st->codec;
1437         if (!ost->stream_copy && enc->coded_frame)
1438             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1439         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1440             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1441         }
1442         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1443             float t = (cur_time-timer_start) / 1000000.0;
1444
1445             frame_number = ost->frame_number;
1446             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1447                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1448             if(is_last_report)
1449                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1450             if(qp_hist){
1451                 int j;
1452                 int qp = lrintf(q);
1453                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1454                     qp_histogram[qp]++;
1455                 for(j=0; j<32; j++)
1456                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1457             }
1458             if (enc->flags&CODEC_FLAG_PSNR){
1459                 int j;
1460                 double error, error_sum=0;
1461                 double scale, scale_sum=0;
1462                 char type[3]= {'Y','U','V'};
1463                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1464                 for(j=0; j<3; j++){
1465                     if(is_last_report){
1466                         error= enc->error[j];
1467                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1468                     }else{
1469                         error= enc->coded_frame->error[j];
1470                         scale= enc->width*enc->height*255.0*255.0;
1471                     }
1472                     if(j) scale/=4;
1473                     error_sum += error;
1474                     scale_sum += scale;
1475                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1476                 }
1477                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1478             }
1479             vid = 1;
1480         }
1481         /* compute min output value */
1482         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
1483                                       ost->st->time_base, AV_TIME_BASE_Q));
1484     }
1485
1486     secs = pts / AV_TIME_BASE;
1487     us = pts % AV_TIME_BASE;
1488     mins = secs / 60;
1489     secs %= 60;
1490     hours = mins / 60;
1491     mins %= 60;
1492
1493     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1494
1495     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1496              "size=%8.0fkB time=", total_size / 1024.0);
1497     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1498              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1499              (100 * us) / AV_TIME_BASE);
1500     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1501              "bitrate=%6.1fkbits/s", bitrate);
1502
1503     if (nb_frames_dup || nb_frames_drop)
1504         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1505                 nb_frames_dup, nb_frames_drop);
1506
1507     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1508
1509     fflush(stderr);
1510
1511     if (is_last_report) {
1512         int64_t raw= audio_size + video_size + extra_size;
1513         av_log(NULL, AV_LOG_INFO, "\n");
1514         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1515                video_size/1024.0,
1516                audio_size/1024.0,
1517                extra_size/1024.0,
1518                100.0*(total_size - raw)/raw
1519         );
1520     }
1521 }
1522
1523 static void generate_silence(uint8_t *buf, enum AVSampleFormat sample_fmt, size_t size)
1524 {
1525     int fill_char = 0x00;
1526     if (sample_fmt == AV_SAMPLE_FMT_U8)
1527         fill_char = 0x80;
1528     memset(buf, fill_char, size);
1529 }
1530
1531 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1532 {
1533     int i, ret;
1534
1535     for (i = 0; i < nb_ostreams; i++) {
1536         OutputStream   *ost = &ost_table[i];
1537         AVCodecContext *enc = ost->st->codec;
1538         AVFormatContext *os = output_files[ost->file_index].ctx;
1539
1540         if (!ost->encoding_needed)
1541             continue;
1542
1543         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1544             continue;
1545         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1546             continue;
1547
1548         for(;;) {
1549             AVPacket pkt;
1550             int fifo_bytes;
1551             av_init_packet(&pkt);
1552             pkt.stream_index= ost->index;
1553
1554             switch (ost->st->codec->codec_type) {
1555             case AVMEDIA_TYPE_AUDIO:
1556                 fifo_bytes = av_fifo_size(ost->fifo);
1557                 ret = 0;
1558                 /* encode any samples remaining in fifo */
1559                 if (fifo_bytes > 0) {
1560                     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1561                     int fs_tmp = enc->frame_size;
1562
1563                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1564                     if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1565                         enc->frame_size = fifo_bytes / (osize * enc->channels);
1566                     } else { /* pad */
1567                         int frame_bytes = enc->frame_size*osize*enc->channels;
1568                         if (allocated_audio_buf_size < frame_bytes)
1569                             exit_program(1);
1570                         generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1571                     }
1572
1573                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1574                     pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1575                                               ost->st->time_base.num, enc->sample_rate);
1576                     enc->frame_size = fs_tmp;
1577                 }
1578                 if (ret <= 0) {
1579                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1580                 }
1581                 if (ret < 0) {
1582                     av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1583                     exit_program(1);
1584                 }
1585                 audio_size += ret;
1586                 pkt.flags |= AV_PKT_FLAG_KEY;
1587                 break;
1588             case AVMEDIA_TYPE_VIDEO:
1589                 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1590                 if (ret < 0) {
1591                     av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1592                     exit_program(1);
1593                 }
1594                 video_size += ret;
1595                 if(enc->coded_frame && enc->coded_frame->key_frame)
1596                     pkt.flags |= AV_PKT_FLAG_KEY;
1597                 if (ost->logfile && enc->stats_out) {
1598                     fprintf(ost->logfile, "%s", enc->stats_out);
1599                 }
1600                 break;
1601             default:
1602                 ret=-1;
1603             }
1604
1605             if (ret <= 0)
1606                 break;
1607             pkt.data = bit_buffer;
1608             pkt.size = ret;
1609             if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1610                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1611             write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1612         }
1613     }
1614 }
1615
1616 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1617 static int output_packet(InputStream *ist, int ist_index,
1618                          OutputStream *ost_table, int nb_ostreams,
1619                          const AVPacket *pkt)
1620 {
1621     AVFormatContext *os;
1622     OutputStream *ost;
1623     int ret = 0, i;
1624     int got_output;
1625     void *buffer_to_free = NULL;
1626     static unsigned int samples_size= 0;
1627     AVSubtitle subtitle, *subtitle_to_free;
1628     int64_t pkt_pts = AV_NOPTS_VALUE;
1629 #if CONFIG_AVFILTER
1630     int frame_available;
1631 #endif
1632     float quality = 0;
1633
1634     AVPacket avpkt;
1635     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1636
1637     if(ist->next_pts == AV_NOPTS_VALUE)
1638         ist->next_pts= ist->pts;
1639
1640     if (pkt == NULL) {
1641         /* EOF handling */
1642         av_init_packet(&avpkt);
1643         avpkt.data = NULL;
1644         avpkt.size = 0;
1645         goto handle_eof;
1646     } else {
1647         avpkt = *pkt;
1648     }
1649
1650     if(pkt->dts != AV_NOPTS_VALUE)
1651         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1652     if(pkt->pts != AV_NOPTS_VALUE)
1653         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1654
1655     //while we have more to decode or while the decoder did output something on EOF
1656     while (avpkt.size > 0 || (!pkt && got_output)) {
1657         uint8_t *data_buf, *decoded_data_buf;
1658         int data_size, decoded_data_size;
1659         AVFrame *decoded_frame, *filtered_frame;
1660     handle_eof:
1661         ist->pts= ist->next_pts;
1662
1663         if(avpkt.size && avpkt.size != pkt->size)
1664             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1665                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1666             ist->showed_multi_packet_warning=1;
1667
1668         /* decode the packet if needed */
1669         decoded_frame    = filtered_frame = NULL;
1670         decoded_data_buf = NULL; /* fail safe */
1671         decoded_data_size= 0;
1672         data_buf  = avpkt.data;
1673         data_size = avpkt.size;
1674         subtitle_to_free = NULL;
1675         if (ist->decoding_needed) {
1676             switch(ist->st->codec->codec_type) {
1677             case AVMEDIA_TYPE_AUDIO:{
1678                 if(pkt && samples_size < FFMAX(pkt->size * bps, AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1679                     samples_size = FFMAX(pkt->size * bps, AVCODEC_MAX_AUDIO_FRAME_SIZE);
1680                     av_free(samples);
1681                     samples= av_malloc(samples_size);
1682                 }
1683                 decoded_data_size= samples_size;
1684                     /* XXX: could avoid copy if PCM 16 bits with same
1685                        endianness as CPU */
1686                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1687                                             &avpkt);
1688                 if (ret < 0)
1689                     return ret;
1690                 avpkt.data += ret;
1691                 avpkt.size -= ret;
1692                 data_size   = ret;
1693                 got_output  = decoded_data_size > 0;
1694                 /* Some bug in mpeg audio decoder gives */
1695                 /* decoded_data_size < 0, it seems they are overflows */
1696                 if (!got_output) {
1697                     /* no audio frame */
1698                     continue;
1699                 }
1700                 decoded_data_buf = (uint8_t *)samples;
1701                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1702                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1703                 break;}
1704             case AVMEDIA_TYPE_VIDEO:
1705                     if (!(decoded_frame = avcodec_alloc_frame()))
1706                         return AVERROR(ENOMEM);
1707                     avpkt.pts = pkt_pts;
1708                     avpkt.dts = ist->pts;
1709                     pkt_pts = AV_NOPTS_VALUE;
1710
1711                     ret = avcodec_decode_video2(ist->st->codec,
1712                                                 decoded_frame, &got_output, &avpkt);
1713                     quality = same_quant ? decoded_frame->quality : 0;
1714                     if (ret < 0)
1715                         goto fail;
1716                     if (!got_output) {
1717                         /* no picture yet */
1718                         av_freep(&decoded_frame);
1719                         goto discard_packet;
1720                     }
1721                     ist->next_pts = ist->pts = decoded_frame->best_effort_timestamp;
1722                     if (ist->st->codec->time_base.num != 0) {
1723                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1724                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1725                                           ist->st->codec->time_base.num * ticks) /
1726                             ist->st->codec->time_base.den;
1727                     }
1728                     avpkt.size = 0;
1729                     buffer_to_free = NULL;
1730                     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1731                     break;
1732             case AVMEDIA_TYPE_SUBTITLE:
1733                 ret = avcodec_decode_subtitle2(ist->st->codec,
1734                                                &subtitle, &got_output, &avpkt);
1735                 if (ret < 0)
1736                     return ret;
1737                 if (!got_output) {
1738                     goto discard_packet;
1739                 }
1740                 subtitle_to_free = &subtitle;
1741                 avpkt.size = 0;
1742                 break;
1743             default:
1744                 return -1;
1745             }
1746         } else {
1747             switch(ist->st->codec->codec_type) {
1748             case AVMEDIA_TYPE_AUDIO:
1749                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1750                     ist->st->codec->sample_rate;
1751                 break;
1752             case AVMEDIA_TYPE_VIDEO:
1753                 if (ist->st->codec->time_base.num != 0) {
1754                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1755                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1756                                       ist->st->codec->time_base.num * ticks) /
1757                         ist->st->codec->time_base.den;
1758                 }
1759                 break;
1760             }
1761             avpkt.size = 0;
1762         }
1763
1764 #if CONFIG_AVFILTER
1765         if(ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
1766         for(i=0;i<nb_ostreams;i++) {
1767             OutputFile *of = &output_files[ost_table[i].file_index];
1768             if (of->start_time == 0 || ist->pts >= of->start_time) {
1769                 ost = &ost_table[i];
1770                 if (ost->input_video_filter && ost->source_index == ist_index) {
1771                     if (!decoded_frame->sample_aspect_ratio.num)
1772                         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1773                     decoded_frame->pts = ist->pts;
1774
1775                     av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame, AV_VSRC_BUF_FLAG_OVERWRITE);
1776                 }
1777             }
1778         }
1779 #endif
1780
1781         // preprocess audio (volume)
1782         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1783             if (audio_volume != 256) {
1784                 switch (ist->st->codec->sample_fmt) {
1785                 case AV_SAMPLE_FMT_U8:
1786                 {
1787                     uint8_t *volp = samples;
1788                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1789                         int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
1790                         *volp++ = av_clip_uint8(v);
1791                     }
1792                     break;
1793                 }
1794                 case AV_SAMPLE_FMT_S16:
1795                 {
1796                     int16_t *volp = samples;
1797                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1798                         int v = ((*volp) * audio_volume + 128) >> 8;
1799                         *volp++ = av_clip_int16(v);
1800                     }
1801                     break;
1802                 }
1803                 case AV_SAMPLE_FMT_S32:
1804                 {
1805                     int32_t *volp = samples;
1806                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1807                         int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
1808                         *volp++ = av_clipl_int32(v);
1809                     }
1810                     break;
1811                 }
1812                 case AV_SAMPLE_FMT_FLT:
1813                 {
1814                     float *volp = samples;
1815                     float scale = audio_volume / 256.f;
1816                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1817                         *volp++ *= scale;
1818                     }
1819                     break;
1820                 }
1821                 case AV_SAMPLE_FMT_DBL:
1822                 {
1823                     double *volp = samples;
1824                     double scale = audio_volume / 256.;
1825                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1826                         *volp++ *= scale;
1827                     }
1828                     break;
1829                 }
1830                 default:
1831                     av_log(NULL, AV_LOG_FATAL,
1832                            "Audio volume adjustment on sample format %s is not supported.\n",
1833                            av_get_sample_fmt_name(ist->st->codec->sample_fmt));
1834                     exit_program(1);
1835                 }
1836             }
1837         }
1838
1839         /* frame rate emulation */
1840         if (input_files[ist->file_index].rate_emu) {
1841             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1842             int64_t now = av_gettime() - ist->start;
1843             if (pts > now)
1844                 usleep(pts - now);
1845         }
1846         /* if output time reached then transcode raw format,
1847            encode packets and output them */
1848         for (i = 0; i < nb_ostreams; i++) {
1849             OutputFile *of = &output_files[ost_table[i].file_index];
1850             int frame_size;
1851
1852             ost = &ost_table[i];
1853             if (ost->source_index != ist_index)
1854                 continue;
1855
1856             if (of->start_time && ist->pts < of->start_time)
1857                 continue;
1858
1859             if (of->recording_time != INT64_MAX &&
1860                 av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1861                               (AVRational){1, 1000000}) >= 0) {
1862                 ost->is_past_recording_time = 1;
1863                 continue;
1864             }
1865
1866 #if CONFIG_AVFILTER
1867             frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1868                 !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1869             while (frame_available) {
1870                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter) {
1871                     AVRational ist_pts_tb = ost->output_video_filter->inputs[0]->time_base;
1872                     if (av_buffersink_get_buffer_ref(ost->output_video_filter, &ost->picref, 0) < 0)
1873                         goto cont;
1874                     if (!filtered_frame && !(filtered_frame = avcodec_alloc_frame())) {
1875                         ret = AVERROR(ENOMEM);
1876                         goto fail;
1877                     }
1878                     *filtered_frame= *decoded_frame; //for me_threshold
1879                     if (ost->picref) {
1880                         avfilter_fill_frame_from_video_buffer_ref(filtered_frame, ost->picref);
1881                         ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1882                     }
1883                 }
1884 #else
1885                 filtered_frame = decoded_frame;
1886 #endif
1887                 os = output_files[ost->file_index].ctx;
1888
1889                 /* set the input output pts pairs */
1890                 //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
1891
1892                 if (ost->encoding_needed) {
1893                     av_assert0(ist->decoding_needed);
1894                     switch(ost->st->codec->codec_type) {
1895                     case AVMEDIA_TYPE_AUDIO:
1896                         do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1897                         break;
1898                     case AVMEDIA_TYPE_VIDEO:
1899 #if CONFIG_AVFILTER
1900                         if (ost->picref->video && !ost->frame_aspect_ratio)
1901                             ost->st->codec->sample_aspect_ratio = ost->picref->video->sample_aspect_ratio;
1902 #endif
1903                         do_video_out(os, ost, ist, filtered_frame, &frame_size,
1904                                      same_quant ? quality : ost->st->codec->global_quality);
1905                         if (vstats_filename && frame_size)
1906                             do_video_stats(os, ost, frame_size);
1907                         break;
1908                     case AVMEDIA_TYPE_SUBTITLE:
1909                         do_subtitle_out(os, ost, ist, &subtitle,
1910                                         pkt->pts);
1911                         break;
1912                     default:
1913                         abort();
1914                     }
1915                 } else {
1916                     AVPicture pict;
1917                     AVPacket opkt;
1918                     int64_t ost_tb_start_time= av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1919                     av_init_packet(&opkt);
1920
1921                     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1922 #if !CONFIG_AVFILTER
1923                         continue;
1924 #else
1925                         goto cont;
1926 #endif
1927
1928                     /* no reencoding needed : output the packet directly */
1929                     /* force the input stream PTS */
1930
1931                     if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1932                         audio_size += data_size;
1933                     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1934                         video_size += data_size;
1935                         ost->sync_opts++;
1936                     }
1937
1938                     opkt.stream_index= ost->index;
1939                     if(pkt->pts != AV_NOPTS_VALUE)
1940                         opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1941                     else
1942                         opkt.pts= AV_NOPTS_VALUE;
1943
1944                     if (pkt->dts == AV_NOPTS_VALUE)
1945                         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1946                     else
1947                         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1948                     opkt.dts -= ost_tb_start_time;
1949
1950                     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1951                     opkt.flags= pkt->flags;
1952
1953                     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1954                     if(   ost->st->codec->codec_id != CODEC_ID_H264
1955                        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1956                        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1957                        ) {
1958                         if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1959                             opkt.destruct= av_destruct_packet;
1960                     } else {
1961                         opkt.data = data_buf;
1962                         opkt.size = data_size;
1963                     }
1964
1965                     if (os->oformat->flags & AVFMT_RAWPICTURE) {
1966                         /* store AVPicture in AVPacket, as expected by the output format */
1967                         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1968                         opkt.data = (uint8_t *)&pict;
1969                         opkt.size = sizeof(AVPicture);
1970                         opkt.flags |= AV_PKT_FLAG_KEY;
1971                     }
1972                     write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1973                     ost->st->codec->frame_number++;
1974                     ost->frame_number++;
1975                     av_free_packet(&opkt);
1976                 }
1977 #if CONFIG_AVFILTER
1978                 cont:
1979                 frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1980                                    ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1981                 avfilter_unref_buffer(ost->picref);
1982             }
1983             av_freep(&filtered_frame);
1984 #endif
1985         }
1986
1987 fail:
1988         av_free(buffer_to_free);
1989         /* XXX: allocate the subtitles in the codec ? */
1990         if (subtitle_to_free) {
1991             avsubtitle_free(subtitle_to_free);
1992             subtitle_to_free = NULL;
1993         }
1994         av_freep(&decoded_frame);
1995         if (ret < 0)
1996             return ret;
1997     }
1998  discard_packet:
1999
2000     return 0;
2001 }
2002
2003 static void print_sdp(OutputFile *output_files, int n)
2004 {
2005     char sdp[2048];
2006     int i;
2007     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
2008
2009     if (!avc)
2010         exit_program(1);
2011     for (i = 0; i < n; i++)
2012         avc[i] = output_files[i].ctx;
2013
2014     av_sdp_create(avc, n, sdp, sizeof(sdp));
2015     printf("SDP:\n%s\n", sdp);
2016     fflush(stdout);
2017     av_freep(&avc);
2018 }
2019
2020 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
2021                              char *error, int error_len)
2022 {
2023     InputStream *ist = &input_streams[ist_index];
2024     if (ist->decoding_needed) {
2025         AVCodec *codec = ist->dec;
2026         if (!codec) {
2027             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d.%d",
2028                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2029             return AVERROR(EINVAL);
2030         }
2031         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2032             snprintf(error, error_len, "Error while opening decoder for input stream #%d.%d",
2033                     ist->file_index, ist->st->index);
2034             return AVERROR(EINVAL);
2035         }
2036         assert_codec_experimental(ist->st->codec, 0);
2037         assert_avoptions(ist->opts);
2038     }
2039
2040     ist->pts = ist->st->avg_frame_rate.num ? - ist->st->codec->has_b_frames*AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;
2041     ist->next_pts = AV_NOPTS_VALUE;
2042     ist->is_start = 1;
2043
2044     return 0;
2045 }
2046
2047 static int transcode_init(OutputFile *output_files, int nb_output_files,
2048                           InputFile  *input_files,  int nb_input_files)
2049 {
2050     int ret = 0, i, j, k;
2051     AVFormatContext *os;
2052     AVCodecContext *codec, *icodec;
2053     OutputStream *ost;
2054     InputStream *ist;
2055     char error[1024];
2056     int want_sdp = 1;
2057
2058     /* init framerate emulation */
2059     for (i = 0; i < nb_input_files; i++) {
2060         InputFile *ifile = &input_files[i];
2061         if (ifile->rate_emu)
2062             for (j = 0; j < ifile->nb_streams; j++)
2063                 input_streams[j + ifile->ist_index].start = av_gettime();
2064     }
2065
2066     /* output stream init */
2067     for(i=0;i<nb_output_files;i++) {
2068         os = output_files[i].ctx;
2069         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
2070             av_dump_format(os, i, os->filename, 1);
2071             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2072             return AVERROR(EINVAL);
2073         }
2074     }
2075
2076     /* for each output stream, we compute the right encoding parameters */
2077     for (i = 0; i < nb_output_streams; i++) {
2078         ost = &output_streams[i];
2079         os = output_files[ost->file_index].ctx;
2080         ist = &input_streams[ost->source_index];
2081
2082         if (ost->attachment_filename)
2083             continue;
2084
2085         codec = ost->st->codec;
2086         icodec = ist->st->codec;
2087
2088         ost->st->disposition = ist->st->disposition;
2089         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2090         codec->chroma_sample_location = icodec->chroma_sample_location;
2091
2092         if (ost->stream_copy) {
2093             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2094
2095             if (extra_size > INT_MAX) {
2096                 return AVERROR(EINVAL);
2097             }
2098
2099             /* if stream_copy is selected, no need to decode or encode */
2100             codec->codec_id = icodec->codec_id;
2101             codec->codec_type = icodec->codec_type;
2102
2103             if(!codec->codec_tag){
2104                 if(   !os->oformat->codec_tag
2105                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2106                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2107                     codec->codec_tag = icodec->codec_tag;
2108             }
2109
2110             codec->bit_rate = icodec->bit_rate;
2111             codec->rc_max_rate    = icodec->rc_max_rate;
2112             codec->rc_buffer_size = icodec->rc_buffer_size;
2113             codec->extradata= av_mallocz(extra_size);
2114             if (!codec->extradata) {
2115                 return AVERROR(ENOMEM);
2116             }
2117             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2118             codec->extradata_size= icodec->extradata_size;
2119
2120             codec->time_base = ist->st->time_base;
2121             if(!strcmp(os->oformat->name, "avi")) {
2122                 if(!copy_tb && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base) && av_q2d(ist->st->time_base) < 1.0/500){
2123                     codec->time_base = icodec->time_base;
2124                     codec->time_base.num *= icodec->ticks_per_frame;
2125                     codec->time_base.den *= 2;
2126                 }
2127             } else if(!(os->oformat->flags & AVFMT_VARIABLE_FPS)) {
2128                 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){
2129                     codec->time_base = icodec->time_base;
2130                     codec->time_base.num *= icodec->ticks_per_frame;
2131                 }
2132             }
2133             av_reduce(&codec->time_base.num, &codec->time_base.den,
2134                         codec->time_base.num, codec->time_base.den, INT_MAX);
2135
2136             switch(codec->codec_type) {
2137             case AVMEDIA_TYPE_AUDIO:
2138                 if(audio_volume != 256) {
2139                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2140                     exit_program(1);
2141                 }
2142                 codec->channel_layout = icodec->channel_layout;
2143                 codec->sample_rate = icodec->sample_rate;
2144                 codec->channels = icodec->channels;
2145                 codec->frame_size = icodec->frame_size;
2146                 codec->audio_service_type = icodec->audio_service_type;
2147                 codec->block_align= icodec->block_align;
2148                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2149                     codec->block_align= 0;
2150                 if(codec->codec_id == CODEC_ID_AC3)
2151                     codec->block_align= 0;
2152                 break;
2153             case AVMEDIA_TYPE_VIDEO:
2154                 codec->pix_fmt = icodec->pix_fmt;
2155                 codec->width = icodec->width;
2156                 codec->height = icodec->height;
2157                 codec->has_b_frames = icodec->has_b_frames;
2158                 if (!codec->sample_aspect_ratio.num) {
2159                     codec->sample_aspect_ratio =
2160                     ost->st->sample_aspect_ratio =
2161                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2162                         ist->st->codec->sample_aspect_ratio.num ?
2163                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2164                 }
2165                 break;
2166             case AVMEDIA_TYPE_SUBTITLE:
2167                 codec->width = icodec->width;
2168                 codec->height = icodec->height;
2169                 break;
2170             case AVMEDIA_TYPE_DATA:
2171             case AVMEDIA_TYPE_ATTACHMENT:
2172                 break;
2173             default:
2174                 abort();
2175             }
2176         } else {
2177             if (!ost->enc)
2178                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2179             ist->decoding_needed = 1;
2180             ost->encoding_needed = 1;
2181             switch(codec->codec_type) {
2182             case AVMEDIA_TYPE_AUDIO:
2183                 ost->fifo= av_fifo_alloc(1024);
2184                 if (!ost->fifo) {
2185                     return AVERROR(ENOMEM);
2186                 }
2187                 if (!codec->sample_rate)
2188                     codec->sample_rate = icodec->sample_rate;
2189                 choose_sample_rate(ost->st, ost->enc);
2190                 codec->time_base = (AVRational){1, codec->sample_rate};
2191                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2192                     codec->sample_fmt = icodec->sample_fmt;
2193                 choose_sample_fmt(ost->st, ost->enc);
2194                 if (ost->audio_channels_mapped) {
2195                     /* the requested output channel is set to the number of
2196                      * -map_channel only if no -ac are specified */
2197                     if (!codec->channels) {
2198                         codec->channels       = ost->audio_channels_mapped;
2199                         codec->channel_layout = av_get_default_channel_layout(codec->channels);
2200                         if (!codec->channel_layout) {
2201                             av_log(NULL, AV_LOG_FATAL, "Unable to find an appropriate channel layout for requested number of channel\n");
2202                             exit_program(1);
2203                         }
2204                     }
2205                     /* fill unused channel mapping with -1 (which means a muted
2206                      * channel in case the number of output channels is bigger
2207                      * than the number of mapped channel) */
2208                     for (j = ost->audio_channels_mapped; j < FF_ARRAY_ELEMS(ost->audio_channels_map); j++)
2209                         ost->audio_channels_map[j] = -1;
2210                 } else if (!codec->channels) {
2211                     codec->channels = icodec->channels;
2212                     codec->channel_layout = icodec->channel_layout;
2213                 }
2214                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2215                     codec->channel_layout = 0;
2216                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2217                 ost->audio_resample |=    codec->sample_fmt     != icodec->sample_fmt
2218                                        || codec->channel_layout != icodec->channel_layout;
2219                 icodec->request_channels = codec->channels;
2220                 ost->resample_sample_fmt  = icodec->sample_fmt;
2221                 ost->resample_sample_rate = icodec->sample_rate;
2222                 ost->resample_channels    = icodec->channels;
2223                 break;
2224             case AVMEDIA_TYPE_VIDEO:
2225                 if (codec->pix_fmt == PIX_FMT_NONE)
2226                     codec->pix_fmt = icodec->pix_fmt;
2227                 choose_pixel_fmt(ost->st, ost->enc);
2228
2229                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2230                     av_log(NULL, AV_LOG_FATAL, "Video pixel format is unknown, stream cannot be encoded\n");
2231                     exit_program(1);
2232                 }
2233
2234                 if (!codec->width || !codec->height) {
2235                     codec->width  = icodec->width;
2236                     codec->height = icodec->height;
2237                 }
2238
2239                 ost->video_resample = codec->width   != icodec->width  ||
2240                                       codec->height  != icodec->height ||
2241                                       codec->pix_fmt != icodec->pix_fmt;
2242                 if (ost->video_resample) {
2243                     codec->bits_per_raw_sample= frame_bits_per_raw_sample;
2244                 }
2245
2246                 ost->resample_height = icodec->height;
2247                 ost->resample_width  = icodec->width;
2248                 ost->resample_pix_fmt= icodec->pix_fmt;
2249
2250                 if (!ost->frame_rate.num)
2251                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2252                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2253                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2254                     ost->frame_rate = ost->enc->supported_framerates[idx];
2255                 }
2256                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2257                 if(   av_q2d(codec->time_base) < 0.001 && video_sync_method
2258                    && (video_sync_method==1 || (video_sync_method<0 && !(os->oformat->flags & AVFMT_VARIABLE_FPS)))){
2259                     av_log(os, AV_LOG_WARNING, "Frame rate very high for a muxer not effciciently supporting it.\n"
2260                                                "Please consider specifiying a lower framerate, a different muxer or -vsync 2\n");
2261                 }
2262                 for (j = 0; j < ost->forced_kf_count; j++)
2263                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2264                                                          AV_TIME_BASE_Q,
2265                                                          codec->time_base);
2266
2267 #if CONFIG_AVFILTER
2268                 if (configure_video_filters(ist, ost)) {
2269                     av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2270                     exit(1);
2271                 }
2272 #endif
2273                 break;
2274             case AVMEDIA_TYPE_SUBTITLE:
2275                 break;
2276             default:
2277                 abort();
2278                 break;
2279             }
2280             /* two pass mode */
2281             if (codec->codec_id != CODEC_ID_H264 &&
2282                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2283                 char logfilename[1024];
2284                 FILE *f;
2285
2286                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2287                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2288                          i);
2289                 if (codec->flags & CODEC_FLAG_PASS2) {
2290                     char  *logbuffer;
2291                     size_t logbuffer_size;
2292                     if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2293                         av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2294                                logfilename);
2295                         exit_program(1);
2296                     }
2297                     codec->stats_in = logbuffer;
2298                 }
2299                 if (codec->flags & CODEC_FLAG_PASS1) {
2300                     f = fopen(logfilename, "wb");
2301                     if (!f) {
2302                         av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2303                                logfilename, strerror(errno));
2304                         exit_program(1);
2305                     }
2306                     ost->logfile = f;
2307                 }
2308             }
2309         }
2310         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2311             /* maximum video buffer size is 6-bytes per pixel, plus DPX header size (1664)*/
2312             int size= codec->width * codec->height;
2313             bit_buffer_size= FFMAX(bit_buffer_size, 7*size + 10000);
2314         }
2315     }
2316
2317     if (!bit_buffer)
2318         bit_buffer = av_malloc(bit_buffer_size);
2319     if (!bit_buffer) {
2320         av_log(NULL, AV_LOG_ERROR, "Cannot allocate %d bytes output buffer\n",
2321                bit_buffer_size);
2322         return AVERROR(ENOMEM);
2323     }
2324
2325     /* open each encoder */
2326     for (i = 0; i < nb_output_streams; i++) {
2327         ost = &output_streams[i];
2328         if (ost->encoding_needed) {
2329             AVCodec *codec = ost->enc;
2330             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2331             if (!codec) {
2332                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d.%d",
2333                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2334                 ret = AVERROR(EINVAL);
2335                 goto dump_format;
2336             }
2337             if (dec->subtitle_header) {
2338                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2339                 if (!ost->st->codec->subtitle_header) {
2340                     ret = AVERROR(ENOMEM);
2341                     goto dump_format;
2342                 }
2343                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2344                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2345             }
2346             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2347                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2348                         ost->file_index, ost->index);
2349                 ret = AVERROR(EINVAL);
2350                 goto dump_format;
2351             }
2352             assert_codec_experimental(ost->st->codec, 1);
2353             assert_avoptions(ost->opts);
2354             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2355                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2356                                              " It takes bits/s as argument, not kbits/s\n");
2357             extra_size += ost->st->codec->extradata_size;
2358
2359             if (ost->st->codec->me_threshold)
2360                 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2361         }
2362     }
2363
2364     /* init input streams */
2365     for (i = 0; i < nb_input_streams; i++)
2366         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2367             goto dump_format;
2368
2369     /* discard unused programs */
2370     for (i = 0; i < nb_input_files; i++) {
2371         InputFile *ifile = &input_files[i];
2372         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2373             AVProgram *p = ifile->ctx->programs[j];
2374             int discard  = AVDISCARD_ALL;
2375
2376             for (k = 0; k < p->nb_stream_indexes; k++)
2377                 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2378                     discard = AVDISCARD_DEFAULT;
2379                     break;
2380                 }
2381             p->discard = discard;
2382         }
2383     }
2384
2385     /* open files and write file headers */
2386     for (i = 0; i < nb_output_files; i++) {
2387         os = output_files[i].ctx;
2388         if (avformat_write_header(os, &output_files[i].opts) < 0) {
2389             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2390             ret = AVERROR(EINVAL);
2391             goto dump_format;
2392         }
2393 //        assert_avoptions(output_files[i].opts);
2394         if (strcmp(os->oformat->name, "rtp")) {
2395             want_sdp = 0;
2396         }
2397     }
2398
2399  dump_format:
2400     /* dump the file output parameters - cannot be done before in case
2401        of stream copy */
2402     for(i=0;i<nb_output_files;i++) {
2403         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2404     }
2405
2406     /* dump the stream mapping */
2407     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2408     for (i = 0; i < nb_output_streams; i++) {
2409         ost = &output_streams[i];
2410
2411         if (ost->attachment_filename) {
2412             /* an attached file */
2413             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2414                    ost->attachment_filename, ost->file_index, ost->index);
2415             continue;
2416         }
2417         av_log(NULL, AV_LOG_INFO, "  Stream #%d.%d -> #%d.%d",
2418                input_streams[ost->source_index].file_index,
2419                input_streams[ost->source_index].st->index,
2420                ost->file_index,
2421                ost->index);
2422         if (ost->audio_channels_mapped) {
2423             av_log(NULL, AV_LOG_INFO, " [ch:");
2424             for (j = 0; j < ost->audio_channels_mapped; j++)
2425                 if (ost->audio_channels_map[j] == -1)
2426                     av_log(NULL, AV_LOG_INFO, " M");
2427                 else
2428                     av_log(NULL, AV_LOG_INFO, " %d", ost->audio_channels_map[j]);
2429             av_log(NULL, AV_LOG_INFO, "]");
2430         }
2431         if (ost->sync_ist != &input_streams[ost->source_index])
2432             av_log(NULL, AV_LOG_INFO, " [sync #%d.%d]",
2433                    ost->sync_ist->file_index,
2434                    ost->sync_ist->st->index);
2435         if (ost->stream_copy)
2436             av_log(NULL, AV_LOG_INFO, " (copy)");
2437         else
2438             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
2439                    input_streams[ost->source_index].dec->name : "?",
2440                    ost->enc ? ost->enc->name : "?");
2441         av_log(NULL, AV_LOG_INFO, "\n");
2442     }
2443
2444     if (ret) {
2445         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2446         return ret;
2447     }
2448
2449     if (want_sdp) {
2450         print_sdp(output_files, nb_output_files);
2451     }
2452
2453     return 0;
2454 }
2455
2456 /*
2457  * The following code is the main loop of the file converter
2458  */
2459 static int transcode(OutputFile *output_files, int nb_output_files,
2460                      InputFile  *input_files,  int nb_input_files)
2461 {
2462     int ret, i;
2463     AVFormatContext *is, *os;
2464     OutputStream *ost;
2465     InputStream *ist;
2466     uint8_t *no_packet;
2467     int no_packet_count=0;
2468     int64_t timer_start;
2469     int key;
2470
2471     if (!(no_packet = av_mallocz(nb_input_files)))
2472         exit_program(1);
2473
2474     ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2475     if (ret < 0)
2476         goto fail;
2477
2478     if (!using_stdin) {
2479         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
2480         avio_set_interrupt_cb(decode_interrupt_cb);
2481     }
2482
2483     timer_start = av_gettime();
2484
2485     for(; received_sigterm == 0;) {
2486         int file_index, ist_index;
2487         AVPacket pkt;
2488         int64_t ipts_min;
2489         double opts_min;
2490         int64_t cur_time= av_gettime();
2491
2492         ipts_min= INT64_MAX;
2493         opts_min= 1e100;
2494         /* if 'q' pressed, exits */
2495         if (!using_stdin) {
2496             static int64_t last_time;
2497             if (received_nb_signals)
2498                 break;
2499             /* read_key() returns 0 on EOF */
2500             if(cur_time - last_time >= 100000 && !run_as_daemon){
2501                 key =  read_key();
2502                 last_time = cur_time;
2503             }else
2504                 key = -1;
2505             if (key == 'q')
2506                 break;
2507             if (key == '+') av_log_set_level(av_log_get_level()+10);
2508             if (key == '-') av_log_set_level(av_log_get_level()-10);
2509             if (key == 's') qp_hist     ^= 1;
2510             if (key == 'h'){
2511                 if (do_hex_dump){
2512                     do_hex_dump = do_pkt_dump = 0;
2513                 } else if(do_pkt_dump){
2514                     do_hex_dump = 1;
2515                 } else
2516                     do_pkt_dump = 1;
2517                 av_log_set_level(AV_LOG_DEBUG);
2518             }
2519 #if CONFIG_AVFILTER
2520             if (key == 'c' || key == 'C'){
2521                 char buf[4096], target[64], command[256], arg[256] = {0};
2522                 double time;
2523                 int k, n = 0;
2524                 fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2525                 i = 0;
2526                 while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2527                     if (k > 0)
2528                         buf[i++] = k;
2529                 buf[i] = 0;
2530                 if (k > 0 &&
2531                     (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2532                     av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2533                            target, time, command, arg);
2534                     for (i = 0; i < nb_output_streams; i++) {
2535                         ost = &output_streams[i];
2536                         if (ost->graph) {
2537                             if (time < 0) {
2538                                 ret = avfilter_graph_send_command(ost->graph, target, command, arg, buf, sizeof(buf),
2539                                                                   key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2540                                 fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2541                             } else {
2542                                 ret = avfilter_graph_queue_command(ost->graph, target, command, arg, 0, time);
2543                             }
2544                         }
2545                     }
2546                 } else {
2547                     av_log(NULL, AV_LOG_ERROR,
2548                            "Parse error, at least 3 arguments were expected, "
2549                            "only %d given in string '%s'\n", n, buf);
2550                 }
2551             }
2552 #endif
2553             if (key == 'd' || key == 'D'){
2554                 int debug=0;
2555                 if(key == 'D') {
2556                     debug = input_streams[0].st->codec->debug<<1;
2557                     if(!debug) debug = 1;
2558                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2559                         debug += debug;
2560                 }else
2561                     scanf("%d", &debug);
2562                 for(i=0;i<nb_input_streams;i++) {
2563                     input_streams[i].st->codec->debug = debug;
2564                 }
2565                 for(i=0;i<nb_output_streams;i++) {
2566                     ost = &output_streams[i];
2567                     ost->st->codec->debug = debug;
2568                 }
2569                 if(debug) av_log_set_level(AV_LOG_DEBUG);
2570                 fprintf(stderr,"debug=%d\n", debug);
2571             }
2572             if (key == '?'){
2573                 fprintf(stderr, "key    function\n"
2574                                 "?      show this help\n"
2575                                 "+      increase verbosity\n"
2576                                 "-      decrease verbosity\n"
2577                                 "c      Send command to filtergraph\n"
2578                                 "D      cycle through available debug modes\n"
2579                                 "h      dump packets/hex press to cycle through the 3 states\n"
2580                                 "q      quit\n"
2581                                 "s      Show QP histogram\n"
2582                 );
2583             }
2584         }
2585
2586         /* select the stream that we must read now by looking at the
2587            smallest output pts */
2588         file_index = -1;
2589         for (i = 0; i < nb_output_streams; i++) {
2590             OutputFile *of;
2591             int64_t ipts;
2592             double  opts;
2593             ost = &output_streams[i];
2594             of = &output_files[ost->file_index];
2595             os = output_files[ost->file_index].ctx;
2596             ist = &input_streams[ost->source_index];
2597             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2598                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2599                 continue;
2600             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2601             ipts = ist->pts;
2602             if (!input_files[ist->file_index].eof_reached){
2603                 if(ipts < ipts_min) {
2604                     ipts_min = ipts;
2605                     if(input_sync ) file_index = ist->file_index;
2606                 }
2607                 if(opts < opts_min) {
2608                     opts_min = opts;
2609                     if(!input_sync) file_index = ist->file_index;
2610                 }
2611             }
2612             if (ost->frame_number >= ost->max_frames) {
2613                 int j;
2614                 for (j = 0; j < of->ctx->nb_streams; j++)
2615                     output_streams[of->ost_index + j].is_past_recording_time = 1;
2616                 continue;
2617             }
2618         }
2619         /* if none, if is finished */
2620         if (file_index < 0) {
2621             if(no_packet_count){
2622                 no_packet_count=0;
2623                 memset(no_packet, 0, nb_input_files);
2624                 usleep(10000);
2625                 continue;
2626             }
2627             break;
2628         }
2629
2630         /* read a frame from it and output it in the fifo */
2631         is = input_files[file_index].ctx;
2632         ret= av_read_frame(is, &pkt);
2633         if(ret == AVERROR(EAGAIN)){
2634             no_packet[file_index]=1;
2635             no_packet_count++;
2636             continue;
2637         }
2638         if (ret < 0) {
2639             input_files[file_index].eof_reached = 1;
2640             if (opt_shortest)
2641                 break;
2642             else
2643                 continue;
2644         }
2645
2646         no_packet_count=0;
2647         memset(no_packet, 0, nb_input_files);
2648
2649         if (do_pkt_dump) {
2650             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2651                              is->streams[pkt.stream_index]);
2652         }
2653         /* the following test is needed in case new streams appear
2654            dynamically in stream : we ignore them */
2655         if (pkt.stream_index >= input_files[file_index].nb_streams)
2656             goto discard_packet;
2657         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2658         ist = &input_streams[ist_index];
2659         if (ist->discard)
2660             goto discard_packet;
2661
2662         if (pkt.dts != AV_NOPTS_VALUE)
2663             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2664         if (pkt.pts != AV_NOPTS_VALUE)
2665             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2666
2667         if(pkt.pts != AV_NOPTS_VALUE)
2668             pkt.pts *= ist->ts_scale;
2669         if(pkt.dts != AV_NOPTS_VALUE)
2670             pkt.dts *= ist->ts_scale;
2671
2672 //        fprintf(stderr, "next:%"PRId64" dts:%"PRId64" off:%"PRId64" %d\n", ist->next_pts, pkt.dts, input_files[ist->file_index].ts_offset, ist->st->codec->codec_type);
2673         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2674             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2675             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2676             int64_t delta= pkt_dts - ist->next_pts;
2677             if((delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2678                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2679                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2680                 pkt_dts+1<ist->pts)&& !copy_ts){
2681                 input_files[ist->file_index].ts_offset -= delta;
2682                 av_log(NULL, AV_LOG_DEBUG, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2683                        delta, input_files[ist->file_index].ts_offset);
2684                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2685                 if(pkt.pts != AV_NOPTS_VALUE)
2686                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2687             }
2688         }
2689
2690         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2691         if (output_packet(ist, ist_index, output_streams, nb_output_streams, &pkt) < 0) {
2692
2693             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d.%d\n",
2694                    ist->file_index, ist->st->index);
2695             if (exit_on_error)
2696                 exit_program(1);
2697             av_free_packet(&pkt);
2698             continue;
2699         }
2700
2701     discard_packet:
2702         av_free_packet(&pkt);
2703
2704         /* dump report by using the output first video and audio streams */
2705         print_report(output_files, output_streams, nb_output_streams, 0, timer_start, cur_time);
2706     }
2707
2708     /* at the end of stream, we must flush the decoder buffers */
2709     for (i = 0; i < nb_input_streams; i++) {
2710         ist = &input_streams[i];
2711         if (ist->decoding_needed) {
2712             output_packet(ist, i, output_streams, nb_output_streams, NULL);
2713         }
2714     }
2715     flush_encoders(output_streams, nb_output_streams);
2716
2717     term_exit();
2718
2719     /* write the trailer if needed and close file */
2720     for(i=0;i<nb_output_files;i++) {
2721         os = output_files[i].ctx;
2722         av_write_trailer(os);
2723     }
2724
2725     /* dump report by using the first video and audio streams */
2726     print_report(output_files, output_streams, nb_output_streams, 1, timer_start, av_gettime());
2727
2728     /* close each encoder */
2729     for (i = 0; i < nb_output_streams; i++) {
2730         ost = &output_streams[i];
2731         if (ost->encoding_needed) {
2732             av_freep(&ost->st->codec->stats_in);
2733             avcodec_close(ost->st->codec);
2734         }
2735 #if CONFIG_AVFILTER
2736         avfilter_graph_free(&ost->graph);
2737 #endif
2738     }
2739
2740     /* close each decoder */
2741     for (i = 0; i < nb_input_streams; i++) {
2742         ist = &input_streams[i];
2743         if (ist->decoding_needed) {
2744             avcodec_close(ist->st->codec);
2745         }
2746     }
2747
2748     /* finished ! */
2749     ret = 0;
2750
2751  fail:
2752     av_freep(&bit_buffer);
2753     av_freep(&no_packet);
2754
2755     if (output_streams) {
2756         for (i = 0; i < nb_output_streams; i++) {
2757             ost = &output_streams[i];
2758             if (ost) {
2759                 if (ost->stream_copy)
2760                     av_freep(&ost->st->codec->extradata);
2761                 if (ost->logfile) {
2762                     fclose(ost->logfile);
2763                     ost->logfile = NULL;
2764                 }
2765                 av_fifo_free(ost->fifo); /* works even if fifo is not
2766                                              initialized but set to zero */
2767                 av_freep(&ost->st->codec->subtitle_header);
2768                 av_free(ost->resample_frame.data[0]);
2769                 av_free(ost->forced_kf_pts);
2770                 if (ost->video_resample)
2771                     sws_freeContext(ost->img_resample_ctx);
2772                 swr_free(&ost->swr);
2773                 av_dict_free(&ost->opts);
2774             }
2775         }
2776     }
2777     return ret;
2778 }
2779
2780 static int opt_frame_crop(const char *opt, const char *arg)
2781 {
2782     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the crop filter instead\n", opt);
2783     return AVERROR(EINVAL);
2784 }
2785
2786 static int opt_pad(const char *opt, const char *arg)
2787 {
2788     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the pad filter instead\n", opt);
2789     return -1;
2790 }
2791
2792 static double parse_frame_aspect_ratio(const char *arg)
2793 {
2794     int x = 0, y = 0;
2795     double ar = 0;
2796     const char *p;
2797     char *end;
2798
2799     p = strchr(arg, ':');
2800     if (p) {
2801         x = strtol(arg, &end, 10);
2802         if (end == p)
2803             y = strtol(end+1, &end, 10);
2804         if (x > 0 && y > 0)
2805             ar = (double)x / (double)y;
2806     } else
2807         ar = strtod(arg, NULL);
2808
2809     if (!ar) {
2810         av_log(NULL, AV_LOG_FATAL, "Incorrect aspect ratio specification.\n");
2811         exit_program(1);
2812     }
2813     return ar;
2814 }
2815
2816 static int opt_video_channel(const char *opt, const char *arg)
2817 {
2818     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
2819     return opt_default("channel", arg);
2820 }
2821
2822 static int opt_video_standard(const char *opt, const char *arg)
2823 {
2824     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
2825     return opt_default("standard", arg);
2826 }
2827
2828 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2829 {
2830     audio_codec_name = arg;
2831     return parse_option(o, "codec:a", arg, options);
2832 }
2833
2834 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2835 {
2836     video_codec_name = arg;
2837     return parse_option(o, "codec:v", arg, options);
2838 }
2839
2840 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2841 {
2842     subtitle_codec_name = arg;
2843     return parse_option(o, "codec:s", arg, options);
2844 }
2845
2846 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2847 {
2848     return parse_option(o, "codec:d", arg, options);
2849 }
2850
2851 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2852 {
2853     StreamMap *m = NULL;
2854     int i, negative = 0, file_idx;
2855     int sync_file_idx = -1, sync_stream_idx;
2856     char *p, *sync;
2857     char *map;
2858
2859     if (*arg == '-') {
2860         negative = 1;
2861         arg++;
2862     }
2863     map = av_strdup(arg);
2864
2865     /* parse sync stream first, just pick first matching stream */
2866     if (sync = strchr(map, ',')) {
2867         *sync = 0;
2868         sync_file_idx = strtol(sync + 1, &sync, 0);
2869         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2870             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
2871             exit_program(1);
2872         }
2873         if (*sync)
2874             sync++;
2875         for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2876             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2877                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2878                 sync_stream_idx = i;
2879                 break;
2880             }
2881         if (i == input_files[sync_file_idx].nb_streams) {
2882             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
2883                                        "match any streams.\n", arg);
2884             exit_program(1);
2885         }
2886     }
2887
2888
2889     file_idx = strtol(map, &p, 0);
2890     if (file_idx >= nb_input_files || file_idx < 0) {
2891         av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
2892         exit_program(1);
2893     }
2894     if (negative)
2895         /* disable some already defined maps */
2896         for (i = 0; i < o->nb_stream_maps; i++) {
2897             m = &o->stream_maps[i];
2898             if (file_idx == m->file_index &&
2899                 check_stream_specifier(input_files[m->file_index].ctx,
2900                                        input_files[m->file_index].ctx->streams[m->stream_index],
2901                                        *p == ':' ? p + 1 : p) > 0)
2902                 m->disabled = 1;
2903         }
2904     else
2905         for (i = 0; i < input_files[file_idx].nb_streams; i++) {
2906             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2907                         *p == ':' ? p + 1 : p) <= 0)
2908                 continue;
2909             o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
2910                                         &o->nb_stream_maps, o->nb_stream_maps + 1);
2911             m = &o->stream_maps[o->nb_stream_maps - 1];
2912
2913             m->file_index   = file_idx;
2914             m->stream_index = i;
2915
2916             if (sync_file_idx >= 0) {
2917                 m->sync_file_index   = sync_file_idx;
2918                 m->sync_stream_index = sync_stream_idx;
2919             } else {
2920                 m->sync_file_index   = file_idx;
2921                 m->sync_stream_index = i;
2922             }
2923         }
2924
2925     if (!m) {
2926         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
2927         exit_program(1);
2928     }
2929
2930     av_freep(&map);
2931     return 0;
2932 }
2933
2934 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
2935 {
2936     o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
2937                                 &o->nb_attachments, o->nb_attachments + 1);
2938     o->attachments[o->nb_attachments - 1] = arg;
2939     return 0;
2940 }
2941
2942 static int opt_map_channel(OptionsContext *o, const char *opt, const char *arg)
2943 {
2944     int n;
2945     AVStream *st;
2946     AudioChannelMap *m;
2947
2948     o->audio_channel_maps =
2949         grow_array(o->audio_channel_maps, sizeof(*o->audio_channel_maps),
2950                    &o->nb_audio_channel_maps, o->nb_audio_channel_maps + 1);
2951     m = &o->audio_channel_maps[o->nb_audio_channel_maps - 1];
2952
2953     /* muted channel syntax */
2954     n = sscanf(arg, "%d:%d.%d", &m->channel_idx, &m->ofile_idx, &m->ostream_idx);
2955     if ((n == 1 || n == 3) && m->channel_idx == -1) {
2956         m->file_idx = m->stream_idx = -1;
2957         if (n == 1)
2958             m->ofile_idx = m->ostream_idx = -1;
2959         return 0;
2960     }
2961
2962     /* normal syntax */
2963     n = sscanf(arg, "%d.%d.%d:%d.%d",
2964                &m->file_idx,  &m->stream_idx, &m->channel_idx,
2965                &m->ofile_idx, &m->ostream_idx);
2966
2967     if (n != 3 && n != 5) {
2968         av_log(NULL, AV_LOG_FATAL, "Syntax error, mapchan usage: "
2969                "[file.stream.channel|-1][:syncfile:syncstream]\n");
2970         exit_program(1);
2971     }
2972
2973     if (n != 5) // only file.stream.channel specified
2974         m->ofile_idx = m->ostream_idx = -1;
2975
2976     /* check input */
2977     if (m->file_idx < 0 || m->file_idx >= nb_input_files) {
2978         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file index: %d\n",
2979                m->file_idx);
2980         exit_program(1);
2981     }
2982     if (m->stream_idx < 0 ||
2983         m->stream_idx >= input_files[m->file_idx].nb_streams) {
2984         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file stream index #%d.%d\n",
2985                m->file_idx, m->stream_idx);
2986         exit_program(1);
2987     }
2988     st = input_files[m->file_idx].ctx->streams[m->stream_idx];
2989     if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO) {
2990         av_log(NULL, AV_LOG_FATAL, "mapchan: stream #%d.%d is not an audio stream.\n",
2991                m->file_idx, m->stream_idx);
2992         exit_program(1);
2993     }
2994     if (m->channel_idx < 0 || m->channel_idx >= st->codec->channels) {
2995         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid audio channel #%d.%d.%d\n",
2996                m->file_idx, m->stream_idx, m->channel_idx);
2997         exit_program(1);
2998     }
2999     return 0;
3000 }
3001
3002 static void parse_meta_type(char *arg, char *type, int *index)
3003 {
3004     if (*arg) {
3005         *type = *arg;
3006         switch (*arg) {
3007         case 'g':
3008             break;
3009         case 's':
3010         case 'c':
3011         case 'p':
3012             if (*(++arg) == ':')
3013                 *index = strtol(++arg, NULL, 0);
3014             break;
3015         default:
3016             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
3017             exit_program(1);
3018         }
3019     } else
3020         *type = 'g';
3021 }
3022
3023 static int opt_map_metadata(OptionsContext *o, const char *opt, const char *arg)
3024 {
3025     MetadataMap *m, *m1;
3026     char *p;
3027
3028     o->meta_data_maps = grow_array(o->meta_data_maps, sizeof(*o->meta_data_maps),
3029                                    &o->nb_meta_data_maps, o->nb_meta_data_maps + 1);
3030
3031     m = &o->meta_data_maps[o->nb_meta_data_maps - 1][1];
3032     m->file = strtol(arg, &p, 0);
3033     parse_meta_type(*p ? p + 1 : p, &m->type, &m->index);
3034
3035     m1 = &o->meta_data_maps[o->nb_meta_data_maps - 1][0];
3036     if (p = strchr(opt, ':'))
3037         parse_meta_type(p + 1, &m1->type, &m1->index);
3038     else
3039         m1->type = 'g';
3040
3041     if (m->type == 'g' || m1->type == 'g')
3042         o->metadata_global_manual = 1;
3043     if (m->type == 's' || m1->type == 's')
3044         o->metadata_streams_manual = 1;
3045     if (m->type == 'c' || m1->type == 'c')
3046         o->metadata_chapters_manual = 1;
3047
3048     return 0;
3049 }
3050
3051 static int opt_map_meta_data(OptionsContext *o, const char *opt, const char *arg)
3052 {
3053     av_log(NULL, AV_LOG_WARNING, "-map_meta_data is deprecated and will be removed soon. "
3054                     "Use -map_metadata instead.\n");
3055     return opt_map_metadata(o, opt, arg);
3056 }
3057
3058 static int opt_recording_timestamp(OptionsContext *o, const char *opt, const char *arg)
3059 {
3060     char buf[128];
3061     int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
3062     struct tm time = *gmtime((time_t*)&recording_timestamp);
3063     strftime(buf, sizeof(buf), "creation_time=%FT%T%z", &time);
3064     parse_option(o, "metadata", buf, options);
3065
3066     av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
3067                                  "tag instead.\n", opt);
3068     return 0;
3069 }
3070
3071 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
3072 {
3073     const char *codec_string = encoder ? "encoder" : "decoder";
3074     AVCodec *codec;
3075
3076     codec = encoder ?
3077         avcodec_find_encoder_by_name(name) :
3078         avcodec_find_decoder_by_name(name);
3079     if(!codec) {
3080         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
3081         exit_program(1);
3082     }
3083     if(codec->type != type) {
3084         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
3085         exit_program(1);
3086     }
3087     return codec;
3088 }
3089
3090 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
3091 {
3092     char *codec_name = NULL;
3093
3094     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
3095     if (codec_name) {
3096         AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
3097         st->codec->codec_id = codec->id;
3098         return codec;
3099     } else
3100         return avcodec_find_decoder(st->codec->codec_id);
3101 }
3102
3103 /**
3104  * Add all the streams from the given input file to the global
3105  * list of input streams.
3106  */
3107 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
3108 {
3109     int i, rfps, rfps_base;
3110     char *next, *codec_tag = NULL;
3111
3112     for (i = 0; i < ic->nb_streams; i++) {
3113         AVStream *st = ic->streams[i];
3114         AVCodecContext *dec = st->codec;
3115         InputStream *ist;
3116         double scale = 1.0;
3117
3118         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3119         ist = &input_streams[nb_input_streams - 1];
3120         ist->st = st;
3121         ist->file_index = nb_input_files;
3122         ist->discard = 1;
3123         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
3124
3125         MATCH_PER_STREAM_OPT(ts_scale, dbl, scale, ic, st);
3126         ist->ts_scale = scale;
3127
3128         MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, ic, st);
3129         if (codec_tag) {
3130             uint32_t tag = strtol(codec_tag, &next, 0);
3131             if (*next)
3132                 tag = AV_RL32(codec_tag);
3133             st->codec->codec_tag = tag;
3134         }
3135
3136         ist->dec = choose_decoder(o, ic, st);
3137
3138         switch (dec->codec_type) {
3139         case AVMEDIA_TYPE_AUDIO:
3140             if(!ist->dec)
3141                 ist->dec = avcodec_find_decoder(dec->codec_id);
3142             if(o->audio_disable)
3143                 st->discard= AVDISCARD_ALL;
3144             break;
3145         case AVMEDIA_TYPE_VIDEO:
3146             if(!ist->dec)
3147                 ist->dec = avcodec_find_decoder(dec->codec_id);
3148             rfps      = ic->streams[i]->r_frame_rate.num;
3149             rfps_base = ic->streams[i]->r_frame_rate.den;
3150             if (dec->lowres) {
3151                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3152             }
3153
3154             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3155
3156                 av_log(NULL, AV_LOG_INFO,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3157                        i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3158                        (float)rfps / rfps_base, rfps, rfps_base);
3159             }
3160
3161             if (o->video_disable)
3162                 st->discard= AVDISCARD_ALL;
3163             else if(video_discard)
3164                 st->discard= video_discard;
3165             break;
3166         case AVMEDIA_TYPE_DATA:
3167             break;
3168         case AVMEDIA_TYPE_SUBTITLE:
3169             if(!ist->dec)
3170                 ist->dec = avcodec_find_decoder(dec->codec_id);
3171             if(o->subtitle_disable)
3172                 st->discard = AVDISCARD_ALL;
3173             break;
3174         case AVMEDIA_TYPE_ATTACHMENT:
3175         case AVMEDIA_TYPE_UNKNOWN:
3176             break;
3177         default:
3178             abort();
3179         }
3180     }
3181 }
3182
3183 static void assert_file_overwrite(const char *filename)
3184 {
3185     if (!file_overwrite &&
3186         (strchr(filename, ':') == NULL || filename[1] == ':' ||
3187          av_strstart(filename, "file:", NULL))) {
3188         if (avio_check(filename, 0) == 0) {
3189             if (!using_stdin) {
3190                 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3191                 fflush(stderr);
3192                 term_exit();
3193                 if (!read_yesno()) {
3194                     av_log(0, AV_LOG_FATAL, "Not overwriting - exiting\n");
3195                     exit_program(1);
3196                 }
3197                 term_init();
3198             }
3199             else {
3200                 av_log(0, AV_LOG_FATAL, "File '%s' already exists. Exiting.\n", filename);
3201                 exit_program(1);
3202             }
3203         }
3204     }
3205 }
3206
3207 static void dump_attachment(AVStream *st, const char *filename)
3208 {
3209     int ret;
3210     AVIOContext *out = NULL;
3211     AVDictionaryEntry *e;
3212
3213     if (!st->codec->extradata_size) {
3214         av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
3215                nb_input_files - 1, st->index);
3216         return;
3217     }
3218     if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
3219         filename = e->value;
3220     if (!*filename) {
3221         av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
3222                "in stream #%d:%d.\n", nb_input_files - 1, st->index);
3223         exit_program(1);
3224     }
3225
3226     assert_file_overwrite(filename);
3227
3228     if ((ret = avio_open (&out, filename, AVIO_FLAG_WRITE)) < 0) {
3229         av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
3230                filename);
3231         exit_program(1);
3232     }
3233
3234     avio_write(out, st->codec->extradata, st->codec->extradata_size);
3235     avio_flush(out);
3236     avio_close(out);
3237 }
3238
3239 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
3240 {
3241     AVFormatContext *ic;
3242     AVInputFormat *file_iformat = NULL;
3243     int err, i, ret;
3244     int64_t timestamp;
3245     uint8_t buf[128];
3246     AVDictionary **opts;
3247     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
3248
3249     if (o->format) {
3250         if (!(file_iformat = av_find_input_format(o->format))) {
3251             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
3252             exit_program(1);
3253         }
3254     }
3255
3256     if (!strcmp(filename, "-"))
3257         filename = "pipe:";
3258
3259     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3260                     !strcmp(filename, "/dev/stdin");
3261
3262     /* get default parameters from command line */
3263     ic = avformat_alloc_context();
3264     if (!ic) {
3265         print_error(filename, AVERROR(ENOMEM));
3266         exit_program(1);
3267     }
3268     if (o->nb_audio_sample_rate) {
3269         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
3270         av_dict_set(&format_opts, "sample_rate", buf, 0);
3271     }
3272     if (o->nb_audio_channels) {
3273         snprintf(buf, sizeof(buf), "%d", o->audio_channels[o->nb_audio_channels - 1].u.i);
3274         av_dict_set(&format_opts, "channels", buf, 0);
3275     }
3276     if (o->nb_frame_rates) {
3277         av_dict_set(&format_opts, "framerate", o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
3278     }
3279     if (o->nb_frame_sizes) {
3280         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
3281     }
3282     if (o->nb_frame_pix_fmts)
3283         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
3284
3285     ic->video_codec_id   = video_codec_name ?
3286         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0)->id : CODEC_ID_NONE;
3287     ic->audio_codec_id   = audio_codec_name ?
3288         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0)->id : CODEC_ID_NONE;
3289     ic->subtitle_codec_id= subtitle_codec_name ?
3290         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0)->id : CODEC_ID_NONE;
3291     ic->flags |= AVFMT_FLAG_NONBLOCK;
3292
3293     if (loop_input) {
3294         av_log(NULL, AV_LOG_WARNING, "-loop_input is deprecated, use -loop 1\n");
3295         ic->loop_input = loop_input;
3296     }
3297
3298     /* open the input file with generic libav function */
3299     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3300     if (err < 0) {
3301         print_error(filename, err);
3302         exit_program(1);
3303     }
3304     assert_avoptions(format_opts);
3305
3306     /* apply forced codec ids */
3307     for (i = 0; i < ic->nb_streams; i++)
3308         choose_decoder(o, ic, ic->streams[i]);
3309
3310     /* Set AVCodecContext options for avformat_find_stream_info */
3311     opts = setup_find_stream_info_opts(ic, codec_opts);
3312     orig_nb_streams = ic->nb_streams;
3313
3314     /* If not enough info to get the stream parameters, we decode the
3315        first frames to get it. (used in mpeg case for example) */
3316     ret = avformat_find_stream_info(ic, opts);
3317     if (ret < 0) {
3318         av_log(NULL, AV_LOG_FATAL, "%s: could not find codec parameters\n", filename);
3319         av_close_input_file(ic);
3320         exit_program(1);
3321     }
3322
3323     timestamp = o->start_time;
3324     /* add the stream start time */
3325     if (ic->start_time != AV_NOPTS_VALUE)
3326         timestamp += ic->start_time;
3327
3328     /* if seeking requested, we execute it */
3329     if (o->start_time != 0) {
3330         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3331         if (ret < 0) {
3332             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
3333                    filename, (double)timestamp / AV_TIME_BASE);
3334         }
3335     }
3336
3337     /* update the current parameters so that they match the one of the input stream */
3338     add_input_streams(o, ic);
3339
3340     /* dump the file content */
3341     av_dump_format(ic, nb_input_files, filename, 0);
3342
3343     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3344     input_files[nb_input_files - 1].ctx        = ic;
3345     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3346     input_files[nb_input_files - 1].ts_offset  = o->input_ts_offset - (copy_ts ? 0 : timestamp);
3347     input_files[nb_input_files - 1].nb_streams = ic->nb_streams;
3348     input_files[nb_input_files - 1].rate_emu   = o->rate_emu;
3349
3350     for (i = 0; i < o->nb_dump_attachment; i++) {
3351         int j;
3352
3353         for (j = 0; j < ic->nb_streams; j++) {
3354             AVStream *st = ic->streams[j];
3355
3356             if (check_stream_specifier(ic, st, o->dump_attachment[i].specifier) == 1)
3357                 dump_attachment(st, o->dump_attachment[i].u.str);
3358         }
3359     }
3360
3361     for (i = 0; i < orig_nb_streams; i++)
3362         av_dict_free(&opts[i]);
3363     av_freep(&opts);
3364
3365     reset_options(o, 1);
3366     return 0;
3367 }
3368
3369 static void parse_forced_key_frames(char *kf, OutputStream *ost)
3370 {
3371     char *p;
3372     int n = 1, i;
3373
3374     for (p = kf; *p; p++)
3375         if (*p == ',')
3376             n++;
3377     ost->forced_kf_count = n;
3378     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
3379     if (!ost->forced_kf_pts) {
3380         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
3381         exit_program(1);
3382     }
3383     for (i = 0; i < n; i++) {
3384         p = i ? strchr(p, ',') + 1 : kf;
3385         ost->forced_kf_pts[i] = parse_time_or_die("force_key_frames", p, 1);
3386     }
3387 }
3388
3389 static uint8_t *get_line(AVIOContext *s)
3390 {
3391     AVIOContext *line;
3392     uint8_t *buf;
3393     char c;
3394
3395     if (avio_open_dyn_buf(&line) < 0) {
3396         av_log(NULL, AV_LOG_FATAL, "Could not alloc buffer for reading preset.\n");
3397         exit_program(1);
3398     }
3399
3400     while ((c = avio_r8(s)) && c != '\n')
3401         avio_w8(line, c);
3402     avio_w8(line, 0);
3403     avio_close_dyn_buf(line, &buf);
3404
3405     return buf;
3406 }
3407
3408 static int get_preset_file_2(const char *preset_name, const char *codec_name, AVIOContext **s)
3409 {
3410     int i, ret = 1;
3411     char filename[1000];
3412     const char *base[3] = { getenv("AVCONV_DATADIR"),
3413                             getenv("HOME"),
3414                             AVCONV_DATADIR,
3415                             };
3416
3417     for (i = 0; i < FF_ARRAY_ELEMS(base) && ret; i++) {
3418         if (!base[i])
3419             continue;
3420         if (codec_name) {
3421             snprintf(filename, sizeof(filename), "%s%s/%s-%s.avpreset", base[i],
3422                      i != 1 ? "" : "/.avconv", codec_name, preset_name);
3423             ret = avio_open(s, filename, AVIO_FLAG_READ);
3424         }
3425         if (ret) {
3426             snprintf(filename, sizeof(filename), "%s%s/%s.avpreset", base[i],
3427                      i != 1 ? "" : "/.avconv", preset_name);
3428             ret = avio_open(s, filename, AVIO_FLAG_READ);
3429         }
3430     }
3431     return ret;
3432 }
3433
3434 static void choose_encoder(OptionsContext *o, AVFormatContext *s, OutputStream *ost)
3435 {
3436     char *codec_name = NULL;
3437
3438     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, ost->st);
3439     if (!codec_name) {
3440         ost->st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename,
3441                                                   NULL, ost->st->codec->codec_type);
3442         ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
3443     } else if (!strcmp(codec_name, "copy"))
3444         ost->stream_copy = 1;
3445     else {
3446         ost->enc = find_codec_or_die(codec_name, ost->st->codec->codec_type, 1);
3447         ost->st->codec->codec_id = ost->enc->id;
3448     }
3449 }
3450
3451 static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
3452 {
3453     OutputStream *ost;
3454     AVStream *st = avformat_new_stream(oc, NULL);
3455     int idx      = oc->nb_streams - 1, ret = 0;
3456     int64_t max_frames = INT64_MAX;
3457     char *bsf = NULL, *next, *codec_tag = NULL;
3458     AVBitStreamFilterContext *bsfc, *bsfc_prev = NULL;
3459     double qscale = -1;
3460     char *buf = NULL, *arg = NULL, *preset = NULL;
3461     AVIOContext *s = NULL;
3462
3463     if (!st) {
3464         av_log(NULL, AV_LOG_FATAL, "Could not alloc stream.\n");
3465         exit_program(1);
3466     }
3467
3468     if (oc->nb_streams - 1 < o->nb_streamid_map)
3469         st->id = o->streamid_map[oc->nb_streams - 1];
3470
3471     output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
3472                                 nb_output_streams + 1);
3473     ost = &output_streams[nb_output_streams - 1];
3474     ost->file_index = nb_output_files;
3475     ost->index = idx;
3476     ost->st    = st;
3477     st->codec->codec_type = type;
3478     choose_encoder(o, oc, ost);
3479     if (ost->enc) {
3480         ost->opts  = filter_codec_opts(codec_opts, ost->enc->id, oc, st);
3481     }
3482
3483     avcodec_get_context_defaults3(st->codec, ost->enc);
3484     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
3485
3486     MATCH_PER_STREAM_OPT(presets, str, preset, oc, st);
3487     if (preset && (!(ret = get_preset_file_2(preset, ost->enc->name, &s)))) {
3488         do  {
3489             buf = get_line(s);
3490             if (!buf[0] || buf[0] == '#') {
3491                 av_free(buf);
3492                 continue;
3493             }
3494             if (!(arg = strchr(buf, '='))) {
3495                 av_log(NULL, AV_LOG_FATAL, "Invalid line found in the preset file.\n");
3496                 exit_program(1);
3497             }
3498             *arg++ = 0;
3499             av_dict_set(&ost->opts, buf, arg, AV_DICT_DONT_OVERWRITE);
3500             av_free(buf);
3501         } while (!s->eof_reached);
3502         avio_close(s);
3503     }
3504     if (ret) {
3505         av_log(NULL, AV_LOG_FATAL,
3506                "Preset %s specified for stream %d:%d, but could not be opened.\n",
3507                preset, ost->file_index, ost->index);
3508         exit_program(1);
3509     }
3510
3511     MATCH_PER_STREAM_OPT(max_frames, i64, max_frames, oc, st);
3512     ost->max_frames = max_frames;
3513
3514     MATCH_PER_STREAM_OPT(bitstream_filters, str, bsf, oc, st);
3515     while (bsf) {
3516         if (next = strchr(bsf, ','))
3517             *next++ = 0;
3518         if (!(bsfc = av_bitstream_filter_init(bsf))) {
3519             av_log(NULL, AV_LOG_FATAL, "Unknown bitstream filter %s\n", bsf);
3520             exit_program(1);
3521         }
3522         if (bsfc_prev)
3523             bsfc_prev->next = bsfc;
3524         else
3525             ost->bitstream_filters = bsfc;
3526
3527         bsfc_prev = bsfc;
3528         bsf       = next;
3529     }
3530
3531     MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, oc, st);
3532     if (codec_tag) {
3533         uint32_t tag = strtol(codec_tag, &next, 0);
3534         if (*next)
3535             tag = AV_RL32(codec_tag);
3536         st->codec->codec_tag = tag;
3537     }
3538
3539     MATCH_PER_STREAM_OPT(qscale, dbl, qscale, oc, st);
3540     if (qscale >= 0 || same_quant) {
3541         st->codec->flags |= CODEC_FLAG_QSCALE;
3542         st->codec->global_quality = FF_QP2LAMBDA * qscale;
3543     }
3544
3545     if (oc->oformat->flags & AVFMT_GLOBALHEADER)
3546         st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
3547
3548     av_opt_get_int(sws_opts, "sws_flags", 0, &ost->sws_flags);
3549     return ost;
3550 }
3551
3552 static void parse_matrix_coeffs(uint16_t *dest, const char *str)
3553 {
3554     int i;
3555     const char *p = str;
3556     for(i = 0;; i++) {
3557         dest[i] = atoi(p);
3558         if(i == 63)
3559             break;
3560         p = strchr(p, ',');
3561         if(!p) {
3562             av_log(NULL, AV_LOG_FATAL, "Syntax error in matrix \"%s\" at coeff %d\n", str, i);
3563             exit_program(1);
3564         }
3565         p++;
3566     }
3567 }
3568
3569 static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc)
3570 {
3571     AVStream *st;
3572     OutputStream *ost;
3573     AVCodecContext *video_enc;
3574
3575     ost = new_output_stream(o, oc, AVMEDIA_TYPE_VIDEO);
3576     st  = ost->st;
3577     video_enc = st->codec;
3578
3579     if (!ost->stream_copy) {
3580         const char *p = NULL;
3581         char *forced_key_frames = NULL, *frame_rate = NULL, *frame_size = NULL;
3582         char *frame_aspect_ratio = NULL, *frame_pix_fmt = NULL;
3583         char *intra_matrix = NULL, *inter_matrix = NULL, *filters = NULL;
3584         int i, force_fps = 0, top_field_first = -1;
3585
3586         MATCH_PER_STREAM_OPT(frame_rates, str, frame_rate, oc, st);
3587         if (frame_rate && av_parse_video_rate(&ost->frame_rate, frame_rate) < 0) {
3588             av_log(NULL, AV_LOG_FATAL, "Invalid framerate value: %s\n", frame_rate);
3589             exit_program(1);
3590         }
3591
3592         MATCH_PER_STREAM_OPT(frame_sizes, str, frame_size, oc, st);
3593         if (frame_size && av_parse_video_size(&video_enc->width, &video_enc->height, frame_size) < 0) {
3594             av_log(NULL, AV_LOG_FATAL, "Invalid frame size: %s.\n", frame_size);
3595             exit_program(1);
3596         }
3597
3598         MATCH_PER_STREAM_OPT(frame_aspect_ratios, str, frame_aspect_ratio, oc, st);
3599         if (frame_aspect_ratio)
3600             ost->frame_aspect_ratio = parse_frame_aspect_ratio(frame_aspect_ratio);
3601
3602         video_enc->bits_per_raw_sample = frame_bits_per_raw_sample;
3603         MATCH_PER_STREAM_OPT(frame_pix_fmts, str, frame_pix_fmt, oc, st);
3604         if (frame_pix_fmt && (video_enc->pix_fmt = av_get_pix_fmt(frame_pix_fmt)) == PIX_FMT_NONE) {
3605             av_log(NULL, AV_LOG_FATAL, "Unknown pixel format requested: %s.\n", frame_pix_fmt);
3606             exit_program(1);
3607         }
3608         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3609
3610         if (intra_only)
3611             video_enc->gop_size = 0;