cc8f2fc6183c94f38714d530b16754dde0ed89f9
[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 no_file_overwrite = 0;
135 static int do_benchmark = 0;
136 static int do_hex_dump = 0;
137 static int do_pkt_dump = 0;
138 static int do_psnr = 0;
139 static int do_pass = 0;
140 static const char *pass_logfilename_prefix;
141 static int video_sync_method= -1;
142 static int audio_sync_method= 0;
143 static float audio_drift_threshold= 0.1;
144 static int copy_ts= 0;
145 static int copy_tb= -1;
146 static int opt_shortest = 0;
147 static char *vstats_filename;
148 static FILE *vstats_file;
149
150 static int audio_volume = 256;
151
152 static int exit_on_error = 0;
153 static int using_stdin = 0;
154 static int run_as_daemon  = 0;
155 static volatile int received_nb_signals = 0;
156 static int64_t video_size = 0;
157 static int64_t audio_size = 0;
158 static int64_t extra_size = 0;
159 static int nb_frames_dup = 0;
160 static int nb_frames_drop = 0;
161 static int input_sync;
162
163 static float dts_delta_threshold = 10;
164
165 static int print_stats = 1;
166
167 static uint8_t *audio_buf;
168 static uint8_t *audio_out;
169 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
170
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     AVFrame *decoded_frame;
182     AVFrame *filtered_frame;
183
184     int64_t       start;     /* time when read started */
185     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
186                                 is not defined */
187     int64_t       pts;       /* current pts */
188     double ts_scale;
189     int is_start;            /* is 1 at the start and after a discontinuity */
190     int showed_multi_packet_warning;
191     AVDictionary *opts;
192 } InputStream;
193
194 typedef struct InputFile {
195     AVFormatContext *ctx;
196     int eof_reached;      /* true if eof reached */
197     int ist_index;        /* index of first stream in input_streams */
198     int buffer_size;      /* current total buffer size */
199     int64_t ts_offset;
200     int nb_streams;       /* number of stream that ffmpeg is aware of; may be different
201                              from ctx.nb_streams if new streams appear during av_read_frame() */
202     int rate_emu;
203 } InputFile;
204
205 typedef struct OutputStream {
206     int file_index;          /* file index */
207     int index;               /* stream index in the output file */
208     int source_index;        /* InputStream index */
209     AVStream *st;            /* stream in the output file */
210     int encoding_needed;     /* true if encoding needed for this stream */
211     int frame_number;
212     /* input pts and corresponding output pts
213        for A/V sync */
214     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
215     struct InputStream *sync_ist; /* input stream to sync against */
216     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
217     AVBitStreamFilterContext *bitstream_filters;
218     AVCodec *enc;
219     int64_t max_frames;
220
221     /* video only */
222     int video_resample;
223     AVFrame resample_frame;              /* temporary frame for image resampling */
224     struct SwsContext *img_resample_ctx; /* for image resampling */
225     int resample_height;
226     int resample_width;
227     int resample_pix_fmt;
228     AVRational frame_rate;
229     int force_fps;
230     int top_field_first;
231
232     float frame_aspect_ratio;
233
234     /* forced key frames */
235     int64_t *forced_kf_pts;
236     int forced_kf_count;
237     int forced_kf_index;
238
239     /* audio only */
240     int audio_resample;
241     int audio_channels_map[SWR_CH_MAX];  ///< list of the channels id to pick from the source stream
242     int audio_channels_mapped;           ///< number of channels in audio_channels_map
243     int resample_sample_fmt;
244     int resample_channels;
245     int resample_sample_rate;
246     float rematrix_volume;
247     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
248     FILE *logfile;
249
250     struct SwrContext *swr;
251
252 #if CONFIG_AVFILTER
253     AVFilterContext *output_video_filter;
254     AVFilterContext *input_video_filter;
255     AVFilterBufferRef *picref;
256     char *avfilter;
257     AVFilterGraph *graph;
258 #endif
259
260     int64_t sws_flags;
261     AVDictionary *opts;
262     int is_past_recording_time;
263     int stream_copy;
264     const char *attachment_filename;
265     int copy_initial_nonkeyframes;
266 } OutputStream;
267
268
269 #if HAVE_TERMIOS_H
270
271 /* init terminal so that we can grab keys */
272 static struct termios oldtty;
273 #endif
274
275 typedef struct OutputFile {
276     AVFormatContext *ctx;
277     AVDictionary *opts;
278     int ost_index;       /* index of the first stream in output_streams */
279     int64_t recording_time; /* desired length of the resulting file in microseconds */
280     int64_t start_time;     /* start time in microseconds */
281     uint64_t limit_filesize;
282 } OutputFile;
283
284 static InputStream *input_streams = NULL;
285 static int         nb_input_streams = 0;
286 static InputFile   *input_files   = NULL;
287 static int         nb_input_files   = 0;
288
289 static OutputStream *output_streams = NULL;
290 static int        nb_output_streams = 0;
291 static OutputFile   *output_files   = NULL;
292 static int        nb_output_files   = 0;
293
294 typedef struct OptionsContext {
295     /* input/output options */
296     int64_t start_time;
297     const char *format;
298
299     SpecifierOpt *codec_names;
300     int        nb_codec_names;
301     SpecifierOpt *audio_channels;
302     int        nb_audio_channels;
303     SpecifierOpt *audio_sample_rate;
304     int        nb_audio_sample_rate;
305     SpecifierOpt *rematrix_volume;
306     int        nb_rematrix_volume;
307     SpecifierOpt *frame_rates;
308     int        nb_frame_rates;
309     SpecifierOpt *frame_sizes;
310     int        nb_frame_sizes;
311     SpecifierOpt *frame_pix_fmts;
312     int        nb_frame_pix_fmts;
313
314     /* input options */
315     int64_t input_ts_offset;
316     int rate_emu;
317
318     SpecifierOpt *ts_scale;
319     int        nb_ts_scale;
320     SpecifierOpt *dump_attachment;
321     int        nb_dump_attachment;
322
323     /* output options */
324     StreamMap *stream_maps;
325     int     nb_stream_maps;
326     AudioChannelMap *audio_channel_maps; ///< one info entry per -map_channel
327     int           nb_audio_channel_maps; ///< number of (valid) -map_channel settings
328     /* first item specifies output metadata, second is input */
329     MetadataMap (*meta_data_maps)[2];
330     int nb_meta_data_maps;
331     int metadata_global_manual;
332     int metadata_streams_manual;
333     int metadata_chapters_manual;
334     const char **attachments;
335     int       nb_attachments;
336
337     int chapters_input_file;
338
339     int64_t recording_time;
340     uint64_t limit_filesize;
341     float mux_preload;
342     float mux_max_delay;
343
344     int video_disable;
345     int audio_disable;
346     int subtitle_disable;
347     int data_disable;
348
349     /* indexed by output file stream index */
350     int   *streamid_map;
351     int nb_streamid_map;
352
353     SpecifierOpt *metadata;
354     int        nb_metadata;
355     SpecifierOpt *max_frames;
356     int        nb_max_frames;
357     SpecifierOpt *bitstream_filters;
358     int        nb_bitstream_filters;
359     SpecifierOpt *codec_tags;
360     int        nb_codec_tags;
361     SpecifierOpt *sample_fmts;
362     int        nb_sample_fmts;
363     SpecifierOpt *qscale;
364     int        nb_qscale;
365     SpecifierOpt *forced_key_frames;
366     int        nb_forced_key_frames;
367     SpecifierOpt *force_fps;
368     int        nb_force_fps;
369     SpecifierOpt *frame_aspect_ratios;
370     int        nb_frame_aspect_ratios;
371     SpecifierOpt *rc_overrides;
372     int        nb_rc_overrides;
373     SpecifierOpt *intra_matrices;
374     int        nb_intra_matrices;
375     SpecifierOpt *inter_matrices;
376     int        nb_inter_matrices;
377     SpecifierOpt *top_field_first;
378     int        nb_top_field_first;
379     SpecifierOpt *presets;
380     int        nb_presets;
381     SpecifierOpt *copy_initial_nonkeyframes;
382     int        nb_copy_initial_nonkeyframes;
383 #if CONFIG_AVFILTER
384     SpecifierOpt *filters;
385     int        nb_filters;
386 #endif
387 } OptionsContext;
388
389 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
390 {\
391     int i, ret;\
392     for (i = 0; i < o->nb_ ## name; i++) {\
393         char *spec = o->name[i].specifier;\
394         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
395             outvar = o->name[i].u.type;\
396         else if (ret < 0)\
397             exit_program(1);\
398     }\
399 }
400
401 static void reset_options(OptionsContext *o, int is_input)
402 {
403     const OptionDef *po = options;
404     OptionsContext bak= *o;
405
406     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
407     while (po->name) {
408         void *dst = (uint8_t*)o + po->u.off;
409
410         if (po->flags & OPT_SPEC) {
411             SpecifierOpt **so = dst;
412             int i, *count = (int*)(so + 1);
413             for (i = 0; i < *count; i++) {
414                 av_freep(&(*so)[i].specifier);
415                 if (po->flags & OPT_STRING)
416                     av_freep(&(*so)[i].u.str);
417             }
418             av_freep(so);
419             *count = 0;
420         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
421             av_freep(dst);
422         po++;
423     }
424
425     av_freep(&o->stream_maps);
426     av_freep(&o->audio_channel_maps);
427     av_freep(&o->meta_data_maps);
428     av_freep(&o->streamid_map);
429
430     memset(o, 0, sizeof(*o));
431
432     if(is_input) o->recording_time = bak.recording_time;
433     else         o->recording_time = INT64_MAX;
434     o->mux_max_delay  = 0.7;
435     o->limit_filesize = UINT64_MAX;
436     o->chapters_input_file = INT_MAX;
437
438     uninit_opts();
439     init_opts();
440 }
441
442 #if CONFIG_AVFILTER
443
444 static int configure_video_filters(InputStream *ist, OutputStream *ost)
445 {
446     AVFilterContext *last_filter, *filter;
447     /** filter graph containing all filters including input & output */
448     AVCodecContext *codec = ost->st->codec;
449     AVCodecContext *icodec = ist->st->codec;
450     enum PixelFormat pix_fmts[] = { codec->pix_fmt, PIX_FMT_NONE };
451     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
452     AVRational sample_aspect_ratio;
453     char args[255];
454     int ret;
455
456     ost->graph = avfilter_graph_alloc();
457
458     if (ist->st->sample_aspect_ratio.num){
459         sample_aspect_ratio = ist->st->sample_aspect_ratio;
460     }else
461         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
462
463     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
464              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
465              sample_aspect_ratio.num, sample_aspect_ratio.den);
466
467     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
468                                        "src", args, NULL, ost->graph);
469     if (ret < 0)
470         return ret;
471 #if FF_API_OLD_VSINK_API
472     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
473                                        "out", NULL, pix_fmts, ost->graph);
474 #else
475     buffersink_params->pixel_fmts = pix_fmts;
476     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
477                                        "out", NULL, buffersink_params, ost->graph);
478 #endif
479     av_freep(&buffersink_params);
480     if (ret < 0)
481         return ret;
482     last_filter = ost->input_video_filter;
483
484     if (codec->width  != icodec->width || codec->height != icodec->height) {
485         snprintf(args, 255, "%d:%d:flags=0x%X",
486                  codec->width,
487                  codec->height,
488                  (unsigned)ost->sws_flags);
489         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
490                                                 NULL, args, NULL, ost->graph)) < 0)
491             return ret;
492         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
493             return ret;
494         last_filter = filter;
495     }
496
497     snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
498     ost->graph->scale_sws_opts = av_strdup(args);
499
500     if (ost->avfilter) {
501         AVFilterInOut *outputs = avfilter_inout_alloc();
502         AVFilterInOut *inputs  = avfilter_inout_alloc();
503
504         outputs->name    = av_strdup("in");
505         outputs->filter_ctx = last_filter;
506         outputs->pad_idx = 0;
507         outputs->next    = NULL;
508
509         inputs->name    = av_strdup("out");
510         inputs->filter_ctx = ost->output_video_filter;
511         inputs->pad_idx = 0;
512         inputs->next    = NULL;
513
514         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, &inputs, &outputs, NULL)) < 0)
515             return ret;
516         av_freep(&ost->avfilter);
517     } else {
518         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
519             return ret;
520     }
521
522     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
523         return ret;
524
525     codec->width  = ost->output_video_filter->inputs[0]->w;
526     codec->height = ost->output_video_filter->inputs[0]->h;
527     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
528         ost->frame_aspect_ratio ? // overridden by the -aspect cli option
529         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
530         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
531
532     return 0;
533 }
534 #endif /* CONFIG_AVFILTER */
535
536 static void term_exit(void)
537 {
538     av_log(NULL, AV_LOG_QUIET, "%s", "");
539 #if HAVE_TERMIOS_H
540     if(!run_as_daemon)
541         tcsetattr (0, TCSANOW, &oldtty);
542 #endif
543 }
544
545 static volatile int received_sigterm = 0;
546
547 static void sigterm_handler(int sig)
548 {
549     received_sigterm = sig;
550     received_nb_signals++;
551     term_exit();
552 }
553
554 static void term_init(void)
555 {
556 #if HAVE_TERMIOS_H
557     if(!run_as_daemon){
558     struct termios tty;
559
560     tcgetattr (0, &tty);
561     oldtty = tty;
562     atexit(term_exit);
563
564     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
565                           |INLCR|IGNCR|ICRNL|IXON);
566     tty.c_oflag |= OPOST;
567     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
568     tty.c_cflag &= ~(CSIZE|PARENB);
569     tty.c_cflag |= CS8;
570     tty.c_cc[VMIN] = 1;
571     tty.c_cc[VTIME] = 0;
572
573     tcsetattr (0, TCSANOW, &tty);
574     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
575     }
576 #endif
577     avformat_network_deinit();
578
579     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
580     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
581 #ifdef SIGXCPU
582     signal(SIGXCPU, sigterm_handler);
583 #endif
584 }
585
586 /* read a key without blocking */
587 static int read_key(void)
588 {
589     unsigned char ch;
590 #if HAVE_TERMIOS_H
591     int n = 1;
592     struct timeval tv;
593     fd_set rfds;
594
595     FD_ZERO(&rfds);
596     FD_SET(0, &rfds);
597     tv.tv_sec = 0;
598     tv.tv_usec = 0;
599     n = select(1, &rfds, NULL, NULL, &tv);
600     if (n > 0) {
601         n = read(0, &ch, 1);
602         if (n == 1)
603             return ch;
604
605         return n;
606     }
607 #elif HAVE_KBHIT
608 #    if HAVE_PEEKNAMEDPIPE
609     static int is_pipe;
610     static HANDLE input_handle;
611     DWORD dw, nchars;
612     if(!input_handle){
613         input_handle = GetStdHandle(STD_INPUT_HANDLE);
614         is_pipe = !GetConsoleMode(input_handle, &dw);
615     }
616
617     if (stdin->_cnt > 0) {
618         read(0, &ch, 1);
619         return ch;
620     }
621     if (is_pipe) {
622         /* When running under a GUI, you will end here. */
623         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
624             return -1;
625         //Read it
626         if(nchars != 0) {
627             read(0, &ch, 1);
628             return ch;
629         }else{
630             return -1;
631         }
632     }
633 #    endif
634     if(kbhit())
635         return(getch());
636 #endif
637     return -1;
638 }
639
640 static int decode_interrupt_cb(void *ctx)
641 {
642     return received_nb_signals > 1;
643 }
644
645 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
646
647 void av_noreturn exit_program(int ret)
648 {
649     int i;
650
651     /* close files */
652     for(i=0;i<nb_output_files;i++) {
653         AVFormatContext *s = output_files[i].ctx;
654         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
655             avio_close(s->pb);
656         avformat_free_context(s);
657         av_dict_free(&output_files[i].opts);
658     }
659     for(i=0;i<nb_input_files;i++) {
660         avformat_close_input(&input_files[i].ctx);
661     }
662     for (i = 0; i < nb_input_streams; i++) {
663         av_freep(&input_streams[i].decoded_frame);
664         av_freep(&input_streams[i].filtered_frame);
665         av_dict_free(&input_streams[i].opts);
666     }
667
668     if (vstats_file)
669         fclose(vstats_file);
670     av_free(vstats_filename);
671
672     av_freep(&input_streams);
673     av_freep(&input_files);
674     av_freep(&output_streams);
675     av_freep(&output_files);
676
677     uninit_opts();
678     av_free(audio_buf);
679     av_free(audio_out);
680     allocated_audio_buf_size= allocated_audio_out_size= 0;
681
682 #if CONFIG_AVFILTER
683     avfilter_uninit();
684 #endif
685     avformat_network_deinit();
686
687     av_freep(&input_tmp);
688
689     if (received_sigterm) {
690         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
691                (int) received_sigterm);
692         exit (255);
693     }
694
695     exit(ret); /* not all OS-es handle main() return value */
696 }
697
698 static void assert_avoptions(AVDictionary *m)
699 {
700     AVDictionaryEntry *t;
701     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
702         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
703         exit_program(1);
704     }
705 }
706
707 static void assert_codec_experimental(AVCodecContext *c, int encoder)
708 {
709     const char *codec_string = encoder ? "encoder" : "decoder";
710     AVCodec *codec;
711     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
712         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
713         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
714                 "results.\nAdd '-strict experimental' if you want to use it.\n",
715                 codec_string, c->codec->name);
716         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
717         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
718             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
719                    codec_string, codec->name);
720         exit_program(1);
721     }
722 }
723
724 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
725 {
726     if(codec && codec->sample_fmts){
727         const enum AVSampleFormat *p= codec->sample_fmts;
728         for(; *p!=-1; p++){
729             if(*p == st->codec->sample_fmt)
730                 break;
731         }
732         if (*p == -1) {
733             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
734                 av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
735             if(av_get_sample_fmt_name(st->codec->sample_fmt))
736             av_log(NULL, AV_LOG_WARNING,
737                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
738                    av_get_sample_fmt_name(st->codec->sample_fmt),
739                    codec->name,
740                    av_get_sample_fmt_name(codec->sample_fmts[0]));
741             st->codec->sample_fmt = codec->sample_fmts[0];
742         }
743     }
744 }
745
746 static void choose_sample_rate(AVStream *st, AVCodec *codec)
747 {
748     if(codec && codec->supported_samplerates){
749         const int *p= codec->supported_samplerates;
750         int best=0;
751         int best_dist=INT_MAX;
752         for(; *p; p++){
753             int dist= abs(st->codec->sample_rate - *p);
754             if(dist < best_dist){
755                 best_dist= dist;
756                 best= *p;
757             }
758         }
759         if(best_dist){
760             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
761         }
762         st->codec->sample_rate= best;
763     }
764 }
765
766 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
767 {
768     if(codec && codec->pix_fmts){
769         const enum PixelFormat *p= codec->pix_fmts;
770         int has_alpha= av_pix_fmt_descriptors[st->codec->pix_fmt].nb_components % 2 == 0;
771         enum PixelFormat best= PIX_FMT_NONE;
772         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
773             if(st->codec->codec_id==CODEC_ID_MJPEG){
774                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
775             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
776                 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};
777             }
778         }
779         for (; *p != PIX_FMT_NONE; p++) {
780             best= avcodec_find_best_pix_fmt2(best, *p, st->codec->pix_fmt, has_alpha, NULL);
781             if(*p == st->codec->pix_fmt)
782                 break;
783         }
784         if (*p == PIX_FMT_NONE) {
785             if(st->codec->pix_fmt != PIX_FMT_NONE)
786                 av_log(NULL, AV_LOG_WARNING,
787                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
788                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
789                         codec->name,
790                         av_pix_fmt_descriptors[best].name);
791             st->codec->pix_fmt = best;
792         }
793     }
794 }
795
796 static double get_sync_ipts(const OutputStream *ost)
797 {
798     const InputStream *ist = ost->sync_ist;
799     OutputFile *of = &output_files[ost->file_index];
800     return (double)(ist->pts - of->start_time)/AV_TIME_BASE;
801 }
802
803 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc)
804 {
805     int ret;
806
807     while(bsfc){
808         AVPacket new_pkt= *pkt;
809         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
810                                           &new_pkt.data, &new_pkt.size,
811                                           pkt->data, pkt->size,
812                                           pkt->flags & AV_PKT_FLAG_KEY);
813         if(a>0){
814             av_free_packet(pkt);
815             new_pkt.destruct= av_destruct_packet;
816         } else if(a<0){
817             av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
818                    bsfc->filter->name, pkt->stream_index,
819                    avctx->codec ? avctx->codec->name : "copy");
820             print_error("", a);
821             if (exit_on_error)
822                 exit_program(1);
823         }
824         *pkt= new_pkt;
825
826         bsfc= bsfc->next;
827     }
828
829     ret= av_interleaved_write_frame(s, pkt);
830     if(ret < 0){
831         print_error("av_interleaved_write_frame()", ret);
832         exit_program(1);
833     }
834 }
835
836 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
837 {
838     int fill_char = 0x00;
839     if (sample_fmt == AV_SAMPLE_FMT_U8)
840         fill_char = 0x80;
841     memset(buf, fill_char, size);
842 }
843
844 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
845                          InputStream *ist, AVFrame *decoded_frame)
846 {
847     uint8_t *buftmp;
848     int64_t audio_out_size, audio_buf_size;
849
850     int size_out, frame_bytes, ret, resample_changed;
851     AVCodecContext *enc= ost->st->codec;
852     AVCodecContext *dec= ist->st->codec;
853     int osize = av_get_bytes_per_sample(enc->sample_fmt);
854     int isize = av_get_bytes_per_sample(dec->sample_fmt);
855     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
856     uint8_t *buf = decoded_frame->data[0];
857     int size     = decoded_frame->nb_samples * dec->channels * isize;
858     int64_t allocated_for_size = size;
859
860 need_realloc:
861     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
862     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
863     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
864     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
865     audio_buf_size*= osize*enc->channels;
866
867     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
868     if(coded_bps > 8*osize)
869         audio_out_size= audio_out_size * coded_bps / (8*osize);
870     audio_out_size += FF_MIN_BUFFER_SIZE;
871
872     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
873         av_log(NULL, AV_LOG_FATAL, "Buffer sizes too large\n");
874         exit_program(1);
875     }
876
877     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
878     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
879     if (!audio_buf || !audio_out){
880         av_log(NULL, AV_LOG_FATAL, "Out of memory in do_audio_out\n");
881         exit_program(1);
882     }
883
884     if (enc->channels != dec->channels
885      || enc->sample_fmt != dec->sample_fmt
886      || enc->sample_rate!= dec->sample_rate
887     )
888         ost->audio_resample = 1;
889
890     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
891                        ost->resample_channels    != dec->channels   ||
892                        ost->resample_sample_rate != dec->sample_rate;
893
894     if ((ost->audio_resample && !ost->swr) || resample_changed || ost->audio_channels_mapped) {
895         if (resample_changed) {
896             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",
897                    ist->file_index, ist->st->index,
898                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
899                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
900             ost->resample_sample_fmt  = dec->sample_fmt;
901             ost->resample_channels    = dec->channels;
902             ost->resample_sample_rate = dec->sample_rate;
903             swr_free(&ost->swr);
904         }
905         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
906         if (audio_sync_method <= 1 && !ost->audio_channels_mapped &&
907             ost->resample_sample_fmt  == enc->sample_fmt &&
908             ost->resample_channels    == enc->channels   &&
909             ost->resample_sample_rate == enc->sample_rate) {
910             //ost->swr = NULL;
911             ost->audio_resample = 0;
912         } else {
913             ost->swr = swr_alloc_set_opts(ost->swr,
914                                           enc->channel_layout, enc->sample_fmt, enc->sample_rate,
915                                           dec->channel_layout, dec->sample_fmt, dec->sample_rate,
916                                           0, NULL);
917             if (ost->audio_channels_mapped)
918                 swr_set_channel_mapping(ost->swr, ost->audio_channels_map);
919             av_opt_set_double(ost->swr, "rmvol", ost->rematrix_volume, 0);
920             if (ost->audio_channels_mapped) {
921                 av_opt_set_int(ost->swr, "icl", av_get_default_channel_layout(ost->audio_channels_mapped), 0);
922                 av_opt_set_int(ost->swr, "uch", ost->audio_channels_mapped, 0);
923             }
924             av_opt_set_int(ost->swr, "ich", dec->channels, 0);
925             av_opt_set_int(ost->swr, "och", enc->channels, 0);
926             if(audio_sync_method>1) av_opt_set_int(ost->swr, "flags", SWR_FLAG_RESAMPLE, 0);
927             if(ost->swr && swr_init(ost->swr) < 0){
928                 av_log(NULL, AV_LOG_FATAL, "swr_init() failed\n");
929                 swr_free(&ost->swr);
930             }
931
932             if (!ost->swr) {
933                 av_log(NULL, AV_LOG_FATAL, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
934                         dec->channels, dec->sample_rate,
935                         enc->channels, enc->sample_rate);
936                 exit_program(1);
937             }
938         }
939     }
940
941     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
942
943     if(audio_sync_method){
944         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
945                 - av_fifo_size(ost->fifo)/(enc->channels * osize);
946         int idelta = delta * dec->sample_rate / enc->sample_rate;
947         int byte_delta = idelta * isize * dec->channels;
948
949         //FIXME resample delay
950         if(fabs(delta) > 50){
951             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
952                 if(byte_delta < 0){
953                     byte_delta= FFMAX(byte_delta, -size);
954                     size += byte_delta;
955                     buf  -= byte_delta;
956                     av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n",
957                            -byte_delta / (isize * dec->channels));
958                     if(!size)
959                         return;
960                     ist->is_start=0;
961                 }else{
962                     input_tmp= av_realloc(input_tmp, byte_delta + size);
963
964                     if(byte_delta > allocated_for_size - size){
965                         allocated_for_size= byte_delta + (int64_t)size;
966                         goto need_realloc;
967                     }
968                     ist->is_start=0;
969
970                     generate_silence(input_tmp, dec->sample_fmt, byte_delta);
971                     memcpy(input_tmp + byte_delta, buf, size);
972                     buf= input_tmp;
973                     size += byte_delta;
974                     av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", idelta);
975                 }
976             }else if(audio_sync_method>1){
977                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
978                 av_assert0(ost->audio_resample);
979                 av_log(NULL, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n",
980                        delta, comp, enc->sample_rate);
981 //                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));
982                 swr_compensate(ost->swr, comp, enc->sample_rate);
983             }
984         }
985     }else
986         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
987                         - av_fifo_size(ost->fifo)/(enc->channels * osize); //FIXME wrong
988
989     if (ost->audio_resample) {
990         buftmp = audio_buf;
991         size_out = swr_convert(ost->swr, (      uint8_t*[]){buftmp}, audio_buf_size / (enc->channels * osize),
992                                          (const uint8_t*[]){buf   }, size / (dec->channels * isize));
993         size_out = size_out * enc->channels * osize;
994     } else {
995         buftmp = buf;
996         size_out = size;
997     }
998
999     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
1000
1001     /* now encode as many frames as possible */
1002     if (enc->frame_size > 1) {
1003         /* output resampled raw samples */
1004         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
1005             av_log(NULL, AV_LOG_FATAL, "av_fifo_realloc2() failed\n");
1006             exit_program(1);
1007         }
1008         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
1009
1010         frame_bytes = enc->frame_size * osize * enc->channels;
1011
1012         while (av_fifo_size(ost->fifo) >= frame_bytes) {
1013             AVPacket pkt;
1014             av_init_packet(&pkt);
1015
1016             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
1017
1018             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1019
1020             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
1021                                        (short *)audio_buf);
1022             if (ret < 0) {
1023                 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1024                 exit_program(1);
1025             }
1026             audio_size += ret;
1027             pkt.stream_index= ost->index;
1028             pkt.data= audio_out;
1029             pkt.size= ret;
1030             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1031                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1032             pkt.flags |= AV_PKT_FLAG_KEY;
1033             write_frame(s, &pkt, enc, ost->bitstream_filters);
1034
1035             ost->sync_opts += enc->frame_size;
1036         }
1037     } else {
1038         AVPacket pkt;
1039         av_init_packet(&pkt);
1040
1041         ost->sync_opts += size_out / (osize * enc->channels);
1042
1043         /* output a pcm frame */
1044         /* determine the size of the coded buffer */
1045         size_out /= osize;
1046         if (coded_bps)
1047             size_out = size_out*coded_bps/8;
1048
1049         if(size_out > audio_out_size){
1050             av_log(NULL, AV_LOG_FATAL, "Internal error, buffer size too small\n");
1051             exit_program(1);
1052         }
1053
1054         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1055         ret = avcodec_encode_audio(enc, audio_out, size_out,
1056                                    (short *)buftmp);
1057         if (ret < 0) {
1058             av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1059             exit_program(1);
1060         }
1061         audio_size += ret;
1062         pkt.stream_index= ost->index;
1063         pkt.data= audio_out;
1064         pkt.size= ret;
1065         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1066             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1067         pkt.flags |= AV_PKT_FLAG_KEY;
1068         write_frame(s, &pkt, enc, ost->bitstream_filters);
1069     }
1070 }
1071
1072 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1073 {
1074     AVCodecContext *dec;
1075     AVPicture *picture2;
1076     AVPicture picture_tmp;
1077     uint8_t *buf = 0;
1078
1079     dec = ist->st->codec;
1080
1081     /* deinterlace : must be done before any resize */
1082     if (do_deinterlace) {
1083         int size;
1084
1085         /* create temporary picture */
1086         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1087         buf = av_malloc(size);
1088         if (!buf)
1089             return;
1090
1091         picture2 = &picture_tmp;
1092         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1093
1094         if(avpicture_deinterlace(picture2, picture,
1095                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1096             /* if error, do not deinterlace */
1097             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1098             av_free(buf);
1099             buf = NULL;
1100             picture2 = picture;
1101         }
1102     } else {
1103         picture2 = picture;
1104     }
1105
1106     if (picture != picture2)
1107         *picture = *picture2;
1108     *bufp = buf;
1109 }
1110
1111 static void do_subtitle_out(AVFormatContext *s,
1112                             OutputStream *ost,
1113                             InputStream *ist,
1114                             AVSubtitle *sub,
1115                             int64_t pts)
1116 {
1117     static uint8_t *subtitle_out = NULL;
1118     int subtitle_out_max_size = 1024 * 1024;
1119     int subtitle_out_size, nb, i;
1120     AVCodecContext *enc;
1121     AVPacket pkt;
1122
1123     if (pts == AV_NOPTS_VALUE) {
1124         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1125         if (exit_on_error)
1126             exit_program(1);
1127         return;
1128     }
1129
1130     enc = ost->st->codec;
1131
1132     if (!subtitle_out) {
1133         subtitle_out = av_malloc(subtitle_out_max_size);
1134     }
1135
1136     /* Note: DVB subtitle need one packet to draw them and one other
1137        packet to clear them */
1138     /* XXX: signal it in the codec context ? */
1139     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1140         nb = 2;
1141     else
1142         nb = 1;
1143
1144     for(i = 0; i < nb; i++) {
1145         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1146         // start_display_time is required to be 0
1147         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1148         sub->end_display_time -= sub->start_display_time;
1149         sub->start_display_time = 0;
1150         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1151                                                     subtitle_out_max_size, sub);
1152         if (subtitle_out_size < 0) {
1153             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1154             exit_program(1);
1155         }
1156
1157         av_init_packet(&pkt);
1158         pkt.stream_index = ost->index;
1159         pkt.data = subtitle_out;
1160         pkt.size = subtitle_out_size;
1161         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1162         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1163             /* XXX: the pts correction is handled here. Maybe handling
1164                it in the codec would be better */
1165             if (i == 0)
1166                 pkt.pts += 90 * sub->start_display_time;
1167             else
1168                 pkt.pts += 90 * sub->end_display_time;
1169         }
1170         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1171     }
1172 }
1173
1174 static int bit_buffer_size= 1024*256;
1175 static uint8_t *bit_buffer= NULL;
1176
1177 static void do_video_resample(OutputStream *ost,
1178                               InputStream *ist,
1179                               AVFrame *in_picture,
1180                               AVFrame **out_picture)
1181 {
1182 #if CONFIG_AVFILTER
1183     *out_picture = in_picture;
1184 #else
1185     AVCodecContext *dec = ist->st->codec;
1186     AVCodecContext *enc = ost->st->codec;
1187     int resample_changed = ost->resample_width   != dec->width  ||
1188                            ost->resample_height  != dec->height ||
1189                            ost->resample_pix_fmt != dec->pix_fmt;
1190
1191     *out_picture = in_picture;
1192     if (resample_changed) {
1193         av_log(NULL, AV_LOG_INFO,
1194                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1195                ist->file_index, ist->st->index,
1196                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1197                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1198         ost->resample_width   = dec->width;
1199         ost->resample_height  = dec->height;
1200         ost->resample_pix_fmt = dec->pix_fmt;
1201     }
1202
1203     ost->video_resample = dec->width   != enc->width  ||
1204                           dec->height  != enc->height ||
1205                           dec->pix_fmt != enc->pix_fmt;
1206
1207     if (ost->video_resample) {
1208         *out_picture = &ost->resample_frame;
1209         if (!ost->img_resample_ctx || resample_changed) {
1210             /* initialize the destination picture */
1211             if (!ost->resample_frame.data[0]) {
1212                 avcodec_get_frame_defaults(&ost->resample_frame);
1213                 if (avpicture_alloc((AVPicture *)&ost->resample_frame, enc->pix_fmt,
1214                                     enc->width, enc->height)) {
1215                     av_log(NULL, AV_LOG_FATAL, "Cannot allocate temp picture, check pix fmt\n");
1216                     exit_program(1);
1217                 }
1218             }
1219             /* initialize a new scaler context */
1220             sws_freeContext(ost->img_resample_ctx);
1221             ost->img_resample_ctx = sws_getContext(dec->width, dec->height, dec->pix_fmt,
1222                                                    enc->width, enc->height, enc->pix_fmt,
1223                                                    ost->sws_flags, NULL, NULL, NULL);
1224             if (ost->img_resample_ctx == NULL) {
1225                 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
1226                 exit_program(1);
1227             }
1228         }
1229         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1230               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1231     }
1232 #endif
1233 }
1234
1235
1236 static void do_video_out(AVFormatContext *s,
1237                          OutputStream *ost,
1238                          InputStream *ist,
1239                          AVFrame *in_picture,
1240                          int *frame_size, float quality)
1241 {
1242     int nb_frames, i, ret, format_video_sync;
1243     AVFrame *final_picture;
1244     AVCodecContext *enc;
1245     double sync_ipts;
1246     double duration = 0;
1247
1248     enc = ost->st->codec;
1249
1250     if (ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE) {
1251         duration = FFMAX(av_q2d(ist->st->time_base), av_q2d(ist->st->codec->time_base));
1252         if(ist->st->avg_frame_rate.num)
1253             duration= FFMAX(duration, 1/av_q2d(ist->st->avg_frame_rate));
1254
1255         duration /= av_q2d(enc->time_base);
1256     }
1257
1258     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1259
1260     /* by default, we output a single frame */
1261     nb_frames = 1;
1262
1263     *frame_size = 0;
1264
1265     format_video_sync = video_sync_method;
1266     if (format_video_sync < 0)
1267         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? 0 : 2) : 1;
1268
1269     if (format_video_sync) {
1270         double vdelta = sync_ipts - ost->sync_opts + duration;
1271         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1272         if (vdelta < -1.1)
1273             nb_frames = 0;
1274         else if (format_video_sync == 2) {
1275             if(vdelta<=-0.6){
1276                 nb_frames=0;
1277             }else if(vdelta>0.6)
1278                 ost->sync_opts= lrintf(sync_ipts);
1279         }else if (vdelta > 1.1)
1280             nb_frames = lrintf(vdelta);
1281 //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);
1282         if (nb_frames == 0){
1283             ++nb_frames_drop;
1284             av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1285         }else if (nb_frames > 1) {
1286             nb_frames_dup += nb_frames - 1;
1287             av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames-1);
1288         }
1289     }else
1290         ost->sync_opts= lrintf(sync_ipts);
1291
1292     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1293     if (nb_frames <= 0)
1294         return;
1295
1296     do_video_resample(ost, ist, in_picture, &final_picture);
1297
1298     /* duplicates frame if needed */
1299     for(i=0;i<nb_frames;i++) {
1300         AVPacket pkt;
1301         av_init_packet(&pkt);
1302         pkt.stream_index= ost->index;
1303
1304         if (s->oformat->flags & AVFMT_RAWPICTURE &&
1305             enc->codec->id == CODEC_ID_RAWVIDEO) {
1306             /* raw pictures are written as AVPicture structure to
1307                avoid any copies. We support temporarily the older
1308                method. */
1309             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1310             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1311             pkt.data= (uint8_t *)final_picture;
1312             pkt.size=  sizeof(AVPicture);
1313             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1314             pkt.flags |= AV_PKT_FLAG_KEY;
1315
1316             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1317         } else {
1318             AVFrame big_picture;
1319
1320             big_picture= *final_picture;
1321             /* better than nothing: use input picture interlaced
1322                settings */
1323             big_picture.interlaced_frame = in_picture->interlaced_frame;
1324             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1325                 if (ost->top_field_first == -1)
1326                     big_picture.top_field_first = in_picture->top_field_first;
1327                 else
1328                     big_picture.top_field_first = !!ost->top_field_first;
1329             }
1330
1331             /* handles same_quant here. This is not correct because it may
1332                not be a global option */
1333             big_picture.quality = quality;
1334             if (!enc->me_threshold)
1335                 big_picture.pict_type = 0;
1336 //            big_picture.pts = AV_NOPTS_VALUE;
1337             big_picture.pts= ost->sync_opts;
1338 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1339 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1340             if (ost->forced_kf_index < ost->forced_kf_count &&
1341                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1342                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1343                 ost->forced_kf_index++;
1344             }
1345             ret = avcodec_encode_video(enc,
1346                                        bit_buffer, bit_buffer_size,
1347                                        &big_picture);
1348             if (ret < 0) {
1349                 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1350                 exit_program(1);
1351             }
1352
1353             if(ret>0){
1354                 pkt.data= bit_buffer;
1355                 pkt.size= ret;
1356                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1357                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1358 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1359    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1360    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1361
1362                 if(enc->coded_frame->key_frame)
1363                     pkt.flags |= AV_PKT_FLAG_KEY;
1364                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1365                 *frame_size = ret;
1366                 video_size += ret;
1367                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1368                 //        enc->frame_number-1, ret, enc->pict_type);
1369                 /* if two pass, output log */
1370                 if (ost->logfile && enc->stats_out) {
1371                     fprintf(ost->logfile, "%s", enc->stats_out);
1372                 }
1373             }
1374         }
1375         ost->sync_opts++;
1376         ost->frame_number++;
1377     }
1378 }
1379
1380 static double psnr(double d)
1381 {
1382     return -10.0*log(d)/log(10.0);
1383 }
1384
1385 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1386                            int frame_size)
1387 {
1388     AVCodecContext *enc;
1389     int frame_number;
1390     double ti1, bitrate, avg_bitrate;
1391
1392     /* this is executed just the first time do_video_stats is called */
1393     if (!vstats_file) {
1394         vstats_file = fopen(vstats_filename, "w");
1395         if (!vstats_file) {
1396             perror("fopen");
1397             exit_program(1);
1398         }
1399     }
1400
1401     enc = ost->st->codec;
1402     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1403         frame_number = ost->frame_number;
1404         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1405         if (enc->flags&CODEC_FLAG_PSNR)
1406             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1407
1408         fprintf(vstats_file,"f_size= %6d ", frame_size);
1409         /* compute pts value */
1410         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1411         if (ti1 < 0.01)
1412             ti1 = 0.01;
1413
1414         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1415         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1416         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1417             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1418         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1419     }
1420 }
1421
1422 static void print_report(OutputFile *output_files,
1423                          OutputStream *ost_table, int nb_ostreams,
1424                          int is_last_report, int64_t timer_start, int64_t cur_time)
1425 {
1426     char buf[1024];
1427     OutputStream *ost;
1428     AVFormatContext *oc;
1429     int64_t total_size;
1430     AVCodecContext *enc;
1431     int frame_number, vid, i;
1432     double bitrate;
1433     int64_t pts = INT64_MAX;
1434     static int64_t last_time = -1;
1435     static int qp_histogram[52];
1436     int hours, mins, secs, us;
1437
1438     if (!print_stats && !is_last_report)
1439         return;
1440
1441     if (!is_last_report) {
1442         if (last_time == -1) {
1443             last_time = cur_time;
1444             return;
1445         }
1446         if ((cur_time - last_time) < 500000)
1447             return;
1448         last_time = cur_time;
1449     }
1450
1451
1452     oc = output_files[0].ctx;
1453
1454     total_size = avio_size(oc->pb);
1455     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
1456         total_size= avio_tell(oc->pb);
1457         if (total_size < 0)
1458             total_size = 0;
1459     }
1460
1461     buf[0] = '\0';
1462     vid = 0;
1463     for(i=0;i<nb_ostreams;i++) {
1464         float q = -1;
1465         ost = &ost_table[i];
1466         enc = ost->st->codec;
1467         if (!ost->stream_copy && enc->coded_frame)
1468             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1469         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1470             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1471         }
1472         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1473             float t = (cur_time-timer_start) / 1000000.0;
1474
1475             frame_number = ost->frame_number;
1476             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1477                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1478             if(is_last_report)
1479                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1480             if(qp_hist){
1481                 int j;
1482                 int qp = lrintf(q);
1483                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1484                     qp_histogram[qp]++;
1485                 for(j=0; j<32; j++)
1486                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1487             }
1488             if (enc->flags&CODEC_FLAG_PSNR){
1489                 int j;
1490                 double error, error_sum=0;
1491                 double scale, scale_sum=0;
1492                 char type[3]= {'Y','U','V'};
1493                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1494                 for(j=0; j<3; j++){
1495                     if(is_last_report){
1496                         error= enc->error[j];
1497                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1498                     }else{
1499                         error= enc->coded_frame->error[j];
1500                         scale= enc->width*enc->height*255.0*255.0;
1501                     }
1502                     if(j) scale/=4;
1503                     error_sum += error;
1504                     scale_sum += scale;
1505                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1506                 }
1507                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1508             }
1509             vid = 1;
1510         }
1511         /* compute min output value */
1512         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
1513                                       ost->st->time_base, AV_TIME_BASE_Q));
1514     }
1515
1516     secs = pts / AV_TIME_BASE;
1517     us = pts % AV_TIME_BASE;
1518     mins = secs / 60;
1519     secs %= 60;
1520     hours = mins / 60;
1521     mins %= 60;
1522
1523     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1524
1525     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1526              "size=%8.0fkB time=", total_size / 1024.0);
1527     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1528              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1529              (100 * us) / AV_TIME_BASE);
1530     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1531              "bitrate=%6.1fkbits/s", bitrate);
1532
1533     if (nb_frames_dup || nb_frames_drop)
1534         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1535                 nb_frames_dup, nb_frames_drop);
1536
1537     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1538
1539     fflush(stderr);
1540
1541     if (is_last_report) {
1542         int64_t raw= audio_size + video_size + extra_size;
1543         av_log(NULL, AV_LOG_INFO, "\n");
1544         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1545                video_size/1024.0,
1546                audio_size/1024.0,
1547                extra_size/1024.0,
1548                100.0*(total_size - raw)/raw
1549         );
1550         if(video_size + audio_size + extra_size == 0){
1551             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1552         }
1553     }
1554 }
1555
1556 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1557 {
1558     int i, ret;
1559
1560     for (i = 0; i < nb_ostreams; i++) {
1561         OutputStream   *ost = &ost_table[i];
1562         AVCodecContext *enc = ost->st->codec;
1563         AVFormatContext *os = output_files[ost->file_index].ctx;
1564
1565         if (!ost->encoding_needed)
1566             continue;
1567
1568         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1569             continue;
1570         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
1571             continue;
1572
1573         for(;;) {
1574             AVPacket pkt;
1575             int fifo_bytes;
1576             av_init_packet(&pkt);
1577             pkt.stream_index= ost->index;
1578
1579             switch (ost->st->codec->codec_type) {
1580             case AVMEDIA_TYPE_AUDIO:
1581                 fifo_bytes = av_fifo_size(ost->fifo);
1582                 ret = 0;
1583                 /* encode any samples remaining in fifo */
1584                 if (fifo_bytes > 0) {
1585                     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1586                     int fs_tmp = enc->frame_size;
1587
1588                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1589                     if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1590                         enc->frame_size = fifo_bytes / (osize * enc->channels);
1591                     } else { /* pad */
1592                         int frame_bytes = enc->frame_size*osize*enc->channels;
1593                         if (allocated_audio_buf_size < frame_bytes)
1594                             exit_program(1);
1595                         generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1596                     }
1597
1598                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1599                     pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1600                                               ost->st->time_base.num, enc->sample_rate);
1601                     enc->frame_size = fs_tmp;
1602                 }
1603                 if (ret <= 0) {
1604                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1605                 }
1606                 if (ret < 0) {
1607                     av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1608                     exit_program(1);
1609                 }
1610                 audio_size += ret;
1611                 pkt.flags |= AV_PKT_FLAG_KEY;
1612                 break;
1613             case AVMEDIA_TYPE_VIDEO:
1614                 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1615                 if (ret < 0) {
1616                     av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1617                     exit_program(1);
1618                 }
1619                 video_size += ret;
1620                 if(enc->coded_frame && enc->coded_frame->key_frame)
1621                     pkt.flags |= AV_PKT_FLAG_KEY;
1622                 if (ost->logfile && enc->stats_out) {
1623                     fprintf(ost->logfile, "%s", enc->stats_out);
1624                 }
1625                 break;
1626             default:
1627                 ret=-1;
1628             }
1629
1630             if (ret <= 0)
1631                 break;
1632             pkt.data = bit_buffer;
1633             pkt.size = ret;
1634             if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1635                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1636             write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1637         }
1638     }
1639 }
1640
1641 /*
1642  * Check whether a packet from ist should be written into ost at this time
1643  */
1644 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1645 {
1646     OutputFile *of = &output_files[ost->file_index];
1647     int ist_index  = ist - input_streams;
1648
1649     if (ost->source_index != ist_index)
1650         return 0;
1651
1652     if (of->start_time && ist->pts < of->start_time)
1653         return 0;
1654
1655     if (of->recording_time != INT64_MAX &&
1656         av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1657                       (AVRational){1, 1000000}) >= 0) {
1658         ost->is_past_recording_time = 1;
1659         return 0;
1660     }
1661
1662     return 1;
1663 }
1664
1665 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1666 {
1667     OutputFile *of = &output_files[ost->file_index];
1668     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1669     AVPicture pict;
1670     AVPacket opkt;
1671
1672     av_init_packet(&opkt);
1673
1674     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1675         !ost->copy_initial_nonkeyframes)
1676         return;
1677
1678     /* force the input stream PTS */
1679     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1680         audio_size += pkt->size;
1681     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1682         video_size += pkt->size;
1683         ost->sync_opts++;
1684     }
1685
1686     opkt.stream_index = ost->index;
1687     if (pkt->pts != AV_NOPTS_VALUE)
1688         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1689     else
1690         opkt.pts = AV_NOPTS_VALUE;
1691
1692     if (pkt->dts == AV_NOPTS_VALUE)
1693         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1694     else
1695         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1696     opkt.dts -= ost_tb_start_time;
1697
1698     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1699     opkt.flags    = pkt->flags;
1700
1701     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1702     if(   ost->st->codec->codec_id != CODEC_ID_H264
1703        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1704        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1705        ) {
1706         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1707             opkt.destruct = av_destruct_packet;
1708     } else {
1709         opkt.data = pkt->data;
1710         opkt.size = pkt->size;
1711     }
1712     if (of->ctx->oformat->flags & AVFMT_RAWPICTURE) {
1713         /* store AVPicture in AVPacket, as expected by the output format */
1714         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1715         opkt.data = (uint8_t *)&pict;
1716         opkt.size = sizeof(AVPicture);
1717         opkt.flags |= AV_PKT_FLAG_KEY;
1718     }
1719
1720     write_frame(of->ctx, &opkt, ost->st->codec, ost->bitstream_filters);
1721     ost->st->codec->frame_number++;
1722     ost->frame_number++;
1723     av_free_packet(&opkt);
1724 }
1725
1726 static void rate_emu_sleep(InputStream *ist)
1727 {
1728     if (input_files[ist->file_index].rate_emu) {
1729         int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1730         int64_t now = av_gettime() - ist->start;
1731         if (pts > now)
1732             usleep(pts - now);
1733     }
1734 }
1735
1736 static int transcode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1737 {
1738     AVFrame *decoded_frame;
1739     AVCodecContext *avctx = ist->st->codec;
1740     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1741     int i, ret;
1742
1743     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1744         return AVERROR(ENOMEM);
1745     else
1746         avcodec_get_frame_defaults(ist->decoded_frame);
1747     decoded_frame = ist->decoded_frame;
1748
1749     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1750     if (ret < 0) {
1751         return ret;
1752     }
1753
1754     if (!*got_output) {
1755         /* no audio frame */
1756         return ret;
1757     }
1758
1759     /* if the decoder provides a pts, use it instead of the last packet pts.
1760        the decoder could be delaying output by a packet or more. */
1761     if (decoded_frame->pts != AV_NOPTS_VALUE)
1762         ist->next_pts = decoded_frame->pts;
1763
1764     /* increment next_pts to use for the case where the input stream does not
1765        have timestamps or there are multiple frames in the packet */
1766     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1767                      avctx->sample_rate;
1768
1769     // preprocess audio (volume)
1770     if (audio_volume != 256) {
1771         int decoded_data_size = decoded_frame->nb_samples * avctx->channels * bps;
1772         void *samples = decoded_frame->data[0];
1773         switch (avctx->sample_fmt) {
1774         case AV_SAMPLE_FMT_U8:
1775         {
1776             uint8_t *volp = samples;
1777             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1778                 int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
1779                 *volp++ = av_clip_uint8(v);
1780             }
1781             break;
1782         }
1783         case AV_SAMPLE_FMT_S16:
1784         {
1785             int16_t *volp = samples;
1786             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1787                 int v = ((*volp) * audio_volume + 128) >> 8;
1788                 *volp++ = av_clip_int16(v);
1789             }
1790             break;
1791         }
1792         case AV_SAMPLE_FMT_S32:
1793         {
1794             int32_t *volp = samples;
1795             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1796                 int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
1797                 *volp++ = av_clipl_int32(v);
1798             }
1799             break;
1800         }
1801         case AV_SAMPLE_FMT_FLT:
1802         {
1803             float *volp = samples;
1804             float scale = audio_volume / 256.f;
1805             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1806                 *volp++ *= scale;
1807             }
1808             break;
1809         }
1810         case AV_SAMPLE_FMT_DBL:
1811         {
1812             double *volp = samples;
1813             double scale = audio_volume / 256.;
1814             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1815                 *volp++ *= scale;
1816             }
1817             break;
1818         }
1819         default:
1820             av_log(NULL, AV_LOG_FATAL,
1821                    "Audio volume adjustment on sample format %s is not supported.\n",
1822                    av_get_sample_fmt_name(ist->st->codec->sample_fmt));
1823             exit_program(1);
1824         }
1825     }
1826
1827     rate_emu_sleep(ist);
1828
1829     for (i = 0; i < nb_output_streams; i++) {
1830         OutputStream *ost = &output_streams[i];
1831
1832         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1833             continue;
1834         do_audio_out(output_files[ost->file_index].ctx, ost, ist, decoded_frame);
1835     }
1836
1837     return ret;
1838 }
1839
1840 static int transcode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *pkt_pts, int64_t *pkt_dts)
1841 {
1842     AVFrame *decoded_frame, *filtered_frame = NULL;
1843     void *buffer_to_free = NULL;
1844     int i, ret = 0;
1845     float quality = 0;
1846 #if CONFIG_AVFILTER
1847     int frame_available = 1;
1848 #endif
1849     int duration=0;
1850     int64_t *best_effort_timestamp;
1851     AVRational *frame_sample_aspect;
1852
1853     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1854         return AVERROR(ENOMEM);
1855     else
1856         avcodec_get_frame_defaults(ist->decoded_frame);
1857     decoded_frame = ist->decoded_frame;
1858     pkt->pts  = *pkt_pts;
1859     pkt->dts  = *pkt_dts;
1860     *pkt_pts  = AV_NOPTS_VALUE;
1861
1862     if (pkt->duration) {
1863         duration = av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1864     } else if(ist->st->codec->time_base.num != 0) {
1865         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1866         duration = ((int64_t)AV_TIME_BASE *
1867                           ist->st->codec->time_base.num * ticks) /
1868                           ist->st->codec->time_base.den;
1869     }
1870
1871     if(*pkt_dts != AV_NOPTS_VALUE && duration) {
1872         *pkt_dts += duration;
1873     }else
1874         *pkt_dts = AV_NOPTS_VALUE;
1875
1876     ret = avcodec_decode_video2(ist->st->codec,
1877                                 decoded_frame, got_output, pkt);
1878     if (ret < 0)
1879         return ret;
1880
1881     quality = same_quant ? decoded_frame->quality : 0;
1882     if (!*got_output) {
1883         /* no picture yet */
1884         return ret;
1885     }
1886
1887     best_effort_timestamp= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "best_effort_timestamp");
1888     if(*best_effort_timestamp != AV_NOPTS_VALUE)
1889         ist->next_pts = ist->pts = *best_effort_timestamp;
1890
1891     ist->next_pts += duration;
1892     pkt->size = 0;
1893
1894     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1895
1896 #if CONFIG_AVFILTER
1897     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1898     for(i=0;i<nb_output_streams;i++) {
1899         OutputStream *ost = ost = &output_streams[i];
1900         if(check_output_constraints(ist, ost)){
1901             if (!frame_sample_aspect->num)
1902                 *frame_sample_aspect = ist->st->sample_aspect_ratio;
1903             decoded_frame->pts = ist->pts;
1904
1905             av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame, AV_VSRC_BUF_FLAG_OVERWRITE);
1906         }
1907     }
1908 #endif
1909
1910     rate_emu_sleep(ist);
1911
1912     for (i = 0; i < nb_output_streams; i++) {
1913         OutputStream *ost = &output_streams[i];
1914         int frame_size;
1915
1916         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1917             continue;
1918
1919 #if CONFIG_AVFILTER
1920         if (ost->input_video_filter) {
1921             frame_available = av_buffersink_poll_frame(ost->output_video_filter);
1922         }
1923         while (frame_available) {
1924             if (ost->output_video_filter) {
1925                 AVRational ist_pts_tb = ost->output_video_filter->inputs[0]->time_base;
1926                 if (av_buffersink_get_buffer_ref(ost->output_video_filter, &ost->picref, 0) < 0){
1927                     av_log(0, AV_LOG_WARNING, "AV Filter told us it has a frame available but failed to output one\n");
1928                     goto cont;
1929                 }
1930                 if (!ist->filtered_frame && !(ist->filtered_frame = avcodec_alloc_frame())) {
1931                     av_free(buffer_to_free);
1932                     return AVERROR(ENOMEM);
1933                 } else
1934                     avcodec_get_frame_defaults(ist->filtered_frame);
1935                 filtered_frame = ist->filtered_frame;
1936                 *filtered_frame= *decoded_frame; //for me_threshold
1937                 if (ost->picref) {
1938                     avfilter_fill_frame_from_video_buffer_ref(filtered_frame, ost->picref);
1939                     ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1940                 }
1941             }
1942             if (ost->picref->video && !ost->frame_aspect_ratio)
1943                 ost->st->codec->sample_aspect_ratio = ost->picref->video->sample_aspect_ratio;
1944 #else
1945             filtered_frame = decoded_frame;
1946 #endif
1947
1948             do_video_out(output_files[ost->file_index].ctx, ost, ist, filtered_frame, &frame_size,
1949                          same_quant ? quality : ost->st->codec->global_quality);
1950             if (vstats_filename && frame_size)
1951                 do_video_stats(output_files[ost->file_index].ctx, ost, frame_size);
1952 #if CONFIG_AVFILTER
1953             cont:
1954             frame_available = ost->output_video_filter && av_buffersink_poll_frame(ost->output_video_filter);
1955             avfilter_unref_buffer(ost->picref);
1956         }
1957 #endif
1958     }
1959
1960     av_free(buffer_to_free);
1961     return ret;
1962 }
1963
1964 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1965 {
1966     AVSubtitle subtitle;
1967     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1968                                           &subtitle, got_output, pkt);
1969     if (ret < 0)
1970         return ret;
1971     if (!*got_output)
1972         return ret;
1973
1974     rate_emu_sleep(ist);
1975
1976     for (i = 0; i < nb_output_streams; i++) {
1977         OutputStream *ost = &output_streams[i];
1978
1979         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1980             continue;
1981
1982         do_subtitle_out(output_files[ost->file_index].ctx, ost, ist, &subtitle, pkt->pts);
1983     }
1984
1985     avsubtitle_free(&subtitle);
1986     return ret;
1987 }
1988
1989 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1990 static int output_packet(InputStream *ist,
1991                          OutputStream *ost_table, int nb_ostreams,
1992                          const AVPacket *pkt)
1993 {
1994     int ret = 0, i;
1995     int got_output;
1996     int64_t pkt_dts = AV_NOPTS_VALUE;
1997     int64_t pkt_pts = AV_NOPTS_VALUE;
1998
1999     AVPacket avpkt;
2000
2001     if (ist->next_pts == AV_NOPTS_VALUE)
2002         ist->next_pts = ist->pts;
2003
2004     if (pkt == NULL) {
2005         /* EOF handling */
2006         av_init_packet(&avpkt);
2007         avpkt.data = NULL;
2008         avpkt.size = 0;
2009         goto handle_eof;
2010     } else {
2011         avpkt = *pkt;
2012     }
2013
2014     if(pkt->dts != AV_NOPTS_VALUE){
2015         if(ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2016             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2017         pkt_dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2018     }
2019     if(pkt->pts != AV_NOPTS_VALUE)
2020         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2021
2022     //while we have more to decode or while the decoder did output something on EOF
2023     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2024     handle_eof:
2025
2026         ist->pts = ist->next_pts;
2027
2028         if (avpkt.size && avpkt.size != pkt->size) {
2029             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2030                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2031             ist->showed_multi_packet_warning = 1;
2032         }
2033
2034         switch(ist->st->codec->codec_type) {
2035         case AVMEDIA_TYPE_AUDIO:
2036             ret = transcode_audio    (ist, &avpkt, &got_output);
2037             break;
2038         case AVMEDIA_TYPE_VIDEO:
2039             ret = transcode_video    (ist, &avpkt, &got_output, &pkt_pts, &pkt_dts);
2040             break;
2041         case AVMEDIA_TYPE_SUBTITLE:
2042             ret = transcode_subtitles(ist, &avpkt, &got_output);
2043             break;
2044         default:
2045             return -1;
2046         }
2047
2048         if (ret < 0)
2049             return ret;
2050         // touch data and size only if not EOF
2051         if (pkt) {
2052             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
2053                 ret = avpkt.size;
2054             avpkt.data += ret;
2055             avpkt.size -= ret;
2056         }
2057         if (!got_output) {
2058             continue;
2059         }
2060     }
2061
2062     /* handle stream copy */
2063     if (!ist->decoding_needed) {
2064         rate_emu_sleep(ist);
2065         ist->pts = ist->next_pts;
2066         switch (ist->st->codec->codec_type) {
2067         case AVMEDIA_TYPE_AUDIO:
2068             ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2069                              ist->st->codec->sample_rate;
2070             break;
2071         case AVMEDIA_TYPE_VIDEO:
2072             if (pkt->duration) {
2073                 ist->next_pts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2074             } else if(ist->st->codec->time_base.num != 0) {
2075                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2076                 ist->next_pts += ((int64_t)AV_TIME_BASE *
2077                                   ist->st->codec->time_base.num * ticks) /
2078                                   ist->st->codec->time_base.den;
2079             }
2080             break;
2081         }
2082     }
2083     for (i = 0; pkt && i < nb_ostreams; i++) {
2084         OutputStream *ost = &ost_table[i];
2085
2086         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2087             continue;
2088
2089         do_streamcopy(ist, ost, pkt);
2090     }
2091
2092     return 0;
2093 }
2094
2095 static void print_sdp(OutputFile *output_files, int n)
2096 {
2097     char sdp[2048];
2098     int i;
2099     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
2100
2101     if (!avc)
2102         exit_program(1);
2103     for (i = 0; i < n; i++)
2104         avc[i] = output_files[i].ctx;
2105
2106     av_sdp_create(avc, n, sdp, sizeof(sdp));
2107     printf("SDP:\n%s\n", sdp);
2108     fflush(stdout);
2109     av_freep(&avc);
2110 }
2111
2112 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
2113                              char *error, int error_len)
2114 {
2115     InputStream *ist = &input_streams[ist_index];
2116     if (ist->decoding_needed) {
2117         AVCodec *codec = ist->dec;
2118         if (!codec) {
2119             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2120                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2121             return AVERROR(EINVAL);
2122         }
2123         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2124             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2125                     ist->file_index, ist->st->index);
2126             return AVERROR(EINVAL);
2127         }
2128         assert_codec_experimental(ist->st->codec, 0);
2129         assert_avoptions(ist->opts);
2130     }
2131
2132     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;
2133     ist->next_pts = AV_NOPTS_VALUE;
2134     ist->is_start = 1;
2135
2136     return 0;
2137 }
2138
2139 static int transcode_init(OutputFile *output_files, int nb_output_files,
2140                           InputFile  *input_files,  int nb_input_files)
2141 {
2142     int ret = 0, i, j, k;
2143     AVFormatContext *oc;
2144     AVCodecContext *codec, *icodec;
2145     OutputStream *ost;
2146     InputStream *ist;
2147     char error[1024];
2148     int want_sdp = 1;
2149
2150     /* init framerate emulation */
2151     for (i = 0; i < nb_input_files; i++) {
2152         InputFile *ifile = &input_files[i];
2153         if (ifile->rate_emu)
2154             for (j = 0; j < ifile->nb_streams; j++)
2155                 input_streams[j + ifile->ist_index].start = av_gettime();
2156     }
2157
2158     /* output stream init */
2159     for (i = 0; i < nb_output_files; i++) {
2160         oc = output_files[i].ctx;
2161         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2162             av_dump_format(oc, i, oc->filename, 1);
2163             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2164             return AVERROR(EINVAL);
2165         }
2166     }
2167
2168     /* for each output stream, we compute the right encoding parameters */
2169     for (i = 0; i < nb_output_streams; i++) {
2170         ost = &output_streams[i];
2171         oc  = output_files[ost->file_index].ctx;
2172         ist = &input_streams[ost->source_index];
2173
2174         if (ost->attachment_filename)
2175             continue;
2176
2177         codec  = ost->st->codec;
2178         icodec = ist->st->codec;
2179
2180         ost->st->disposition          = ist->st->disposition;
2181         codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2182         codec->chroma_sample_location = icodec->chroma_sample_location;
2183
2184         if (ost->stream_copy) {
2185             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2186
2187             if (extra_size > INT_MAX) {
2188                 return AVERROR(EINVAL);
2189             }
2190
2191             /* if stream_copy is selected, no need to decode or encode */
2192             codec->codec_id   = icodec->codec_id;
2193             codec->codec_type = icodec->codec_type;
2194
2195             if (!codec->codec_tag) {
2196                 if (!oc->oformat->codec_tag ||
2197                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2198                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2199                     codec->codec_tag = icodec->codec_tag;
2200             }
2201
2202             codec->bit_rate       = icodec->bit_rate;
2203             codec->rc_max_rate    = icodec->rc_max_rate;
2204             codec->rc_buffer_size = icodec->rc_buffer_size;
2205             codec->extradata      = av_mallocz(extra_size);
2206             if (!codec->extradata) {
2207                 return AVERROR(ENOMEM);
2208             }
2209             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2210             codec->extradata_size= icodec->extradata_size;
2211
2212             codec->time_base = ist->st->time_base;
2213             if(!strcmp(oc->oformat->name, "avi")) {
2214                 if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2215                                  && av_q2d(ist->st->time_base) < 1.0/500
2216                     || copy_tb==0){
2217                     codec->time_base = icodec->time_base;
2218                     codec->time_base.num *= icodec->ticks_per_frame;
2219                     codec->time_base.den *= 2;
2220                 }
2221             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2222                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2223                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2224             ) {
2225                 if(   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2226                                 && av_q2d(ist->st->time_base) < 1.0/500
2227                    || copy_tb==0){
2228                     codec->time_base = icodec->time_base;
2229                     codec->time_base.num *= icodec->ticks_per_frame;
2230                 }
2231             }
2232             av_reduce(&codec->time_base.num, &codec->time_base.den,
2233                         codec->time_base.num, codec->time_base.den, INT_MAX);
2234
2235             switch(codec->codec_type) {
2236             case AVMEDIA_TYPE_AUDIO:
2237                 if(audio_volume != 256) {
2238                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2239                     exit_program(1);
2240                 }
2241                 codec->channel_layout     = icodec->channel_layout;
2242                 codec->sample_rate        = icodec->sample_rate;
2243                 codec->channels           = icodec->channels;
2244                 codec->frame_size         = icodec->frame_size;
2245                 codec->audio_service_type = icodec->audio_service_type;
2246                 codec->block_align        = icodec->block_align;
2247                 break;
2248             case AVMEDIA_TYPE_VIDEO:
2249                 codec->pix_fmt            = icodec->pix_fmt;
2250                 codec->width              = icodec->width;
2251                 codec->height             = icodec->height;
2252                 codec->has_b_frames       = icodec->has_b_frames;
2253                 if (!codec->sample_aspect_ratio.num) {
2254                     codec->sample_aspect_ratio   =
2255                     ost->st->sample_aspect_ratio =
2256                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2257                         ist->st->codec->sample_aspect_ratio.num ?
2258                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2259                 }
2260                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2261                 break;
2262             case AVMEDIA_TYPE_SUBTITLE:
2263                 codec->width  = icodec->width;
2264                 codec->height = icodec->height;
2265                 break;
2266             case AVMEDIA_TYPE_DATA:
2267             case AVMEDIA_TYPE_ATTACHMENT:
2268                 break;
2269             default:
2270                 abort();
2271             }
2272         } else {
2273             if (!ost->enc)
2274                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2275
2276             ist->decoding_needed = 1;
2277             ost->encoding_needed = 1;
2278
2279             switch(codec->codec_type) {
2280             case AVMEDIA_TYPE_AUDIO:
2281                 ost->fifo = av_fifo_alloc(1024);
2282                 if (!ost->fifo) {
2283                     return AVERROR(ENOMEM);
2284                 }
2285                 if (!codec->sample_rate)
2286                     codec->sample_rate = icodec->sample_rate;
2287                 choose_sample_rate(ost->st, ost->enc);
2288                 codec->time_base = (AVRational){1, codec->sample_rate};
2289
2290                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2291                     codec->sample_fmt = icodec->sample_fmt;
2292                 choose_sample_fmt(ost->st, ost->enc);
2293
2294                 if (ost->audio_channels_mapped) {
2295                     /* the requested output channel is set to the number of
2296                      * -map_channel only if no -ac are specified */
2297                     if (!codec->channels) {
2298                         codec->channels       = ost->audio_channels_mapped;
2299                         codec->channel_layout = av_get_default_channel_layout(codec->channels);
2300                         if (!codec->channel_layout) {
2301                             av_log(NULL, AV_LOG_FATAL, "Unable to find an appropriate channel layout for requested number of channel\n");
2302                             exit_program(1);
2303                         }
2304                     }
2305                     /* fill unused channel mapping with -1 (which means a muted
2306                      * channel in case the number of output channels is bigger
2307                      * than the number of mapped channel) */
2308                     for (j = ost->audio_channels_mapped; j < FF_ARRAY_ELEMS(ost->audio_channels_map); j++)
2309                         ost->audio_channels_map[j] = -1;
2310                 } else if (!codec->channels) {
2311                     codec->channels = icodec->channels;
2312                     codec->channel_layout = icodec->channel_layout;
2313                 }
2314                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2315                     codec->channel_layout = 0;
2316
2317                 ost->audio_resample       = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2318                 ost->audio_resample      |=    codec->sample_fmt     != icodec->sample_fmt
2319                                             || codec->channel_layout != icodec->channel_layout;
2320                 icodec->request_channels  = codec->channels;
2321                 ost->resample_sample_fmt  = icodec->sample_fmt;
2322                 ost->resample_sample_rate = icodec->sample_rate;
2323                 ost->resample_channels    = icodec->channels;
2324                 break;
2325             case AVMEDIA_TYPE_VIDEO:
2326                 if (codec->pix_fmt == PIX_FMT_NONE)
2327                     codec->pix_fmt = icodec->pix_fmt;
2328                 choose_pixel_fmt(ost->st, ost->enc);
2329
2330                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2331                     av_log(NULL, AV_LOG_FATAL, "Video pixel format is unknown, stream cannot be encoded\n");
2332                     exit_program(1);
2333                 }
2334
2335                 if (!codec->width || !codec->height) {
2336                     codec->width  = icodec->width;
2337                     codec->height = icodec->height;
2338                 }
2339
2340                 ost->video_resample = codec->width   != icodec->width  ||
2341                                       codec->height  != icodec->height ||
2342                                       codec->pix_fmt != icodec->pix_fmt;
2343                 if (ost->video_resample) {
2344                     codec->bits_per_raw_sample= frame_bits_per_raw_sample;
2345                 }
2346
2347                 ost->resample_height  = icodec->height;
2348                 ost->resample_width   = icodec->width;
2349                 ost->resample_pix_fmt = icodec->pix_fmt;
2350
2351                 if (!ost->frame_rate.num)
2352                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2353                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2354                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2355                     ost->frame_rate = ost->enc->supported_framerates[idx];
2356                 }
2357                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2358                 if(   av_q2d(codec->time_base) < 0.001 && video_sync_method
2359                    && (video_sync_method==1 || (video_sync_method<0 && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2360                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not effciciently supporting it.\n"
2361                                                "Please consider specifiying a lower framerate, a different muxer or -vsync 2\n");
2362                 }
2363                 for (j = 0; j < ost->forced_kf_count; j++)
2364                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2365                                                          AV_TIME_BASE_Q,
2366                                                          codec->time_base);
2367
2368 #if CONFIG_AVFILTER
2369                 if (configure_video_filters(ist, ost)) {
2370                     av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2371                     exit(1);
2372                 }
2373 #endif
2374                 break;
2375             case AVMEDIA_TYPE_SUBTITLE:
2376                 break;
2377             default:
2378                 abort();
2379                 break;
2380             }
2381             /* two pass mode */
2382             if (codec->codec_id != CODEC_ID_H264 &&
2383                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2384                 char logfilename[1024];
2385                 FILE *f;
2386
2387                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2388                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2389                          i);
2390                 if (codec->flags & CODEC_FLAG_PASS2) {
2391                     char  *logbuffer;
2392                     size_t logbuffer_size;
2393                     if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2394                         av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2395                                logfilename);
2396                         exit_program(1);
2397                     }
2398                     codec->stats_in = logbuffer;
2399                 }
2400                 if (codec->flags & CODEC_FLAG_PASS1) {
2401                     f = fopen(logfilename, "wb");
2402                     if (!f) {
2403                         av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2404                                logfilename, strerror(errno));
2405                         exit_program(1);
2406                     }
2407                     ost->logfile = f;
2408                 }
2409             }
2410         }
2411         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2412             /* maximum video buffer size is 6-bytes per pixel, plus DPX header size (1664)*/
2413             int size        = codec->width * codec->height;
2414             bit_buffer_size = FFMAX(bit_buffer_size, 7*size + 10000);
2415         }
2416     }
2417
2418     if (!bit_buffer)
2419         bit_buffer = av_malloc(bit_buffer_size);
2420     if (!bit_buffer) {
2421         av_log(NULL, AV_LOG_ERROR, "Cannot allocate %d bytes output buffer\n",
2422                bit_buffer_size);
2423         return AVERROR(ENOMEM);
2424     }
2425
2426     /* open each encoder */
2427     for (i = 0; i < nb_output_streams; i++) {
2428         ost = &output_streams[i];
2429         if (ost->encoding_needed) {
2430             AVCodec      *codec = ost->enc;
2431             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2432             if (!codec) {
2433                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2434                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2435                 ret = AVERROR(EINVAL);
2436                 goto dump_format;
2437             }
2438             if (dec->subtitle_header) {
2439                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2440                 if (!ost->st->codec->subtitle_header) {
2441                     ret = AVERROR(ENOMEM);
2442                     goto dump_format;
2443                 }
2444                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2445                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2446             }
2447             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2448                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2449                         ost->file_index, ost->index);
2450                 ret = AVERROR(EINVAL);
2451                 goto dump_format;
2452             }
2453             assert_codec_experimental(ost->st->codec, 1);
2454             assert_avoptions(ost->opts);
2455             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2456                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2457                                              " It takes bits/s as argument, not kbits/s\n");
2458             extra_size += ost->st->codec->extradata_size;
2459
2460             if (ost->st->codec->me_threshold)
2461                 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2462         }
2463     }
2464
2465     /* init input streams */
2466     for (i = 0; i < nb_input_streams; i++)
2467         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2468             goto dump_format;
2469
2470     /* discard unused programs */
2471     for (i = 0; i < nb_input_files; i++) {
2472         InputFile *ifile = &input_files[i];
2473         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2474             AVProgram *p = ifile->ctx->programs[j];
2475             int discard  = AVDISCARD_ALL;
2476
2477             for (k = 0; k < p->nb_stream_indexes; k++)
2478                 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2479                     discard = AVDISCARD_DEFAULT;
2480                     break;
2481                 }
2482             p->discard = discard;
2483         }
2484     }
2485
2486     /* open files and write file headers */
2487     for (i = 0; i < nb_output_files; i++) {
2488         oc = output_files[i].ctx;
2489         oc->interrupt_callback = int_cb;
2490         if (avformat_write_header(oc, &output_files[i].opts) < 0) {
2491             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2492             ret = AVERROR(EINVAL);
2493             goto dump_format;
2494         }
2495 //        assert_avoptions(output_files[i].opts);
2496         if (strcmp(oc->oformat->name, "rtp")) {
2497             want_sdp = 0;
2498         }
2499     }
2500
2501  dump_format:
2502     /* dump the file output parameters - cannot be done before in case
2503        of stream copy */
2504     for (i = 0; i < nb_output_files; i++) {
2505         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2506     }
2507
2508     /* dump the stream mapping */
2509     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2510     for (i = 0; i < nb_output_streams; i++) {
2511         ost = &output_streams[i];
2512
2513         if (ost->attachment_filename) {
2514             /* an attached file */
2515             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2516                    ost->attachment_filename, ost->file_index, ost->index);
2517             continue;
2518         }
2519         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2520                input_streams[ost->source_index].file_index,
2521                input_streams[ost->source_index].st->index,
2522                ost->file_index,
2523                ost->index);
2524         if (ost->audio_channels_mapped) {
2525             av_log(NULL, AV_LOG_INFO, " [ch:");
2526             for (j = 0; j < ost->audio_channels_mapped; j++)
2527                 if (ost->audio_channels_map[j] == -1)
2528                     av_log(NULL, AV_LOG_INFO, " M");
2529                 else
2530                     av_log(NULL, AV_LOG_INFO, " %d", ost->audio_channels_map[j]);
2531             av_log(NULL, AV_LOG_INFO, "]");
2532         }
2533         if (ost->sync_ist != &input_streams[ost->source_index])
2534             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2535                    ost->sync_ist->file_index,
2536                    ost->sync_ist->st->index);
2537         if (ost->stream_copy)
2538             av_log(NULL, AV_LOG_INFO, " (copy)");
2539         else
2540             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
2541                    input_streams[ost->source_index].dec->name : "?",
2542                    ost->enc ? ost->enc->name : "?");
2543         av_log(NULL, AV_LOG_INFO, "\n");
2544     }
2545
2546     if (ret) {
2547         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2548         return ret;
2549     }
2550
2551     if (want_sdp) {
2552         print_sdp(output_files, nb_output_files);
2553     }
2554
2555     return 0;
2556 }
2557
2558 /*
2559  * The following code is the main loop of the file converter
2560  */
2561 static int transcode(OutputFile *output_files, int nb_output_files,
2562                      InputFile  *input_files,  int nb_input_files)
2563 {
2564     int ret, i;
2565     AVFormatContext *is, *os;
2566     OutputStream *ost;
2567     InputStream *ist;
2568     uint8_t *no_packet;
2569     int no_packet_count=0;
2570     int64_t timer_start;
2571     int key;
2572
2573     if (!(no_packet = av_mallocz(nb_input_files)))
2574         exit_program(1);
2575
2576     ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2577     if (ret < 0)
2578         goto fail;
2579
2580     if (!using_stdin) {
2581         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
2582     }
2583
2584     timer_start = av_gettime();
2585
2586     for(; received_sigterm == 0;) {
2587         int file_index, ist_index;
2588         AVPacket pkt;
2589         int64_t ipts_min;
2590         double opts_min;
2591         int64_t cur_time= av_gettime();
2592
2593         ipts_min= INT64_MAX;
2594         opts_min= 1e100;
2595         /* if 'q' pressed, exits */
2596         if (!using_stdin) {
2597             static int64_t last_time;
2598             if (received_nb_signals)
2599                 break;
2600             /* read_key() returns 0 on EOF */
2601             if(cur_time - last_time >= 100000 && !run_as_daemon){
2602                 key =  read_key();
2603                 last_time = cur_time;
2604             }else
2605                 key = -1;
2606             if (key == 'q')
2607                 break;
2608             if (key == '+') av_log_set_level(av_log_get_level()+10);
2609             if (key == '-') av_log_set_level(av_log_get_level()-10);
2610             if (key == 's') qp_hist     ^= 1;
2611             if (key == 'h'){
2612                 if (do_hex_dump){
2613                     do_hex_dump = do_pkt_dump = 0;
2614                 } else if(do_pkt_dump){
2615                     do_hex_dump = 1;
2616                 } else
2617                     do_pkt_dump = 1;
2618                 av_log_set_level(AV_LOG_DEBUG);
2619             }
2620 #if CONFIG_AVFILTER
2621             if (key == 'c' || key == 'C'){
2622                 char buf[4096], target[64], command[256], arg[256] = {0};
2623                 double time;
2624                 int k, n = 0;
2625                 fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2626                 i = 0;
2627                 while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2628                     if (k > 0)
2629                         buf[i++] = k;
2630                 buf[i] = 0;
2631                 if (k > 0 &&
2632                     (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2633                     av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2634                            target, time, command, arg);
2635                     for (i = 0; i < nb_output_streams; i++) {
2636                         ost = &output_streams[i];
2637                         if (ost->graph) {
2638                             if (time < 0) {
2639                                 ret = avfilter_graph_send_command(ost->graph, target, command, arg, buf, sizeof(buf),
2640                                                                   key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2641                                 fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2642                             } else {
2643                                 ret = avfilter_graph_queue_command(ost->graph, target, command, arg, 0, time);
2644                             }
2645                         }
2646                     }
2647                 } else {
2648                     av_log(NULL, AV_LOG_ERROR,
2649                            "Parse error, at least 3 arguments were expected, "
2650                            "only %d given in string '%s'\n", n, buf);
2651                 }
2652             }
2653 #endif
2654             if (key == 'd' || key == 'D'){
2655                 int debug=0;
2656                 if(key == 'D') {
2657                     debug = input_streams[0].st->codec->debug<<1;
2658                     if(!debug) debug = 1;
2659                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2660                         debug += debug;
2661                 }else
2662                     if(scanf("%d", &debug)!=1)
2663                         fprintf(stderr,"error parsing debug value\n");
2664                 for(i=0;i<nb_input_streams;i++) {
2665                     input_streams[i].st->codec->debug = debug;
2666                 }
2667                 for(i=0;i<nb_output_streams;i++) {
2668                     ost = &output_streams[i];
2669                     ost->st->codec->debug = debug;
2670                 }
2671                 if(debug) av_log_set_level(AV_LOG_DEBUG);
2672                 fprintf(stderr,"debug=%d\n", debug);
2673             }
2674             if (key == '?'){
2675                 fprintf(stderr, "key    function\n"
2676                                 "?      show this help\n"
2677                                 "+      increase verbosity\n"
2678                                 "-      decrease verbosity\n"
2679                                 "c      Send command to filtergraph\n"
2680                                 "D      cycle through available debug modes\n"
2681                                 "h      dump packets/hex press to cycle through the 3 states\n"
2682                                 "q      quit\n"
2683                                 "s      Show QP histogram\n"
2684                 );
2685             }
2686         }
2687
2688         /* select the stream that we must read now by looking at the
2689            smallest output pts */
2690         file_index = -1;
2691         for (i = 0; i < nb_output_streams; i++) {
2692             OutputFile *of;
2693             int64_t ipts;
2694             double  opts;
2695             ost = &output_streams[i];
2696             of = &output_files[ost->file_index];
2697             os = output_files[ost->file_index].ctx;
2698             ist = &input_streams[ost->source_index];
2699             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2700                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2701                 continue;
2702             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2703             ipts = ist->pts;
2704             if (!input_files[ist->file_index].eof_reached){
2705                 if(ipts < ipts_min) {
2706                     ipts_min = ipts;
2707                     if(input_sync ) file_index = ist->file_index;
2708                 }
2709                 if(opts < opts_min) {
2710                     opts_min = opts;
2711                     if(!input_sync) file_index = ist->file_index;
2712                 }
2713             }
2714             if (ost->frame_number >= ost->max_frames) {
2715                 int j;
2716                 for (j = 0; j < of->ctx->nb_streams; j++)
2717                     output_streams[of->ost_index + j].is_past_recording_time = 1;
2718                 continue;
2719             }
2720         }
2721         /* if none, if is finished */
2722         if (file_index < 0) {
2723             if(no_packet_count){
2724                 no_packet_count=0;
2725                 memset(no_packet, 0, nb_input_files);
2726                 usleep(10000);
2727                 continue;
2728             }
2729             break;
2730         }
2731
2732         /* read a frame from it and output it in the fifo */
2733         is = input_files[file_index].ctx;
2734         ret= av_read_frame(is, &pkt);
2735         if(ret == AVERROR(EAGAIN)){
2736             no_packet[file_index]=1;
2737             no_packet_count++;
2738             continue;
2739         }
2740         if (ret < 0) {
2741             input_files[file_index].eof_reached = 1;
2742             if (opt_shortest)
2743                 break;
2744             else
2745                 continue;
2746         }
2747
2748         no_packet_count=0;
2749         memset(no_packet, 0, nb_input_files);
2750
2751         if (do_pkt_dump) {
2752             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2753                              is->streams[pkt.stream_index]);
2754         }
2755         /* the following test is needed in case new streams appear
2756            dynamically in stream : we ignore them */
2757         if (pkt.stream_index >= input_files[file_index].nb_streams)
2758             goto discard_packet;
2759         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2760         ist = &input_streams[ist_index];
2761         if (ist->discard)
2762             goto discard_packet;
2763
2764         if (pkt.dts != AV_NOPTS_VALUE)
2765             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2766         if (pkt.pts != AV_NOPTS_VALUE)
2767             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2768
2769         if(pkt.pts != AV_NOPTS_VALUE)
2770             pkt.pts *= ist->ts_scale;
2771         if(pkt.dts != AV_NOPTS_VALUE)
2772             pkt.dts *= ist->ts_scale;
2773
2774 //        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);
2775         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2776             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2777             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2778             int64_t delta= pkt_dts - ist->next_pts;
2779             if((delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2780                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2781                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2782                 pkt_dts+1<ist->pts)&& !copy_ts){
2783                 input_files[ist->file_index].ts_offset -= delta;
2784                 av_log(NULL, AV_LOG_DEBUG, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2785                        delta, input_files[ist->file_index].ts_offset);
2786                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2787                 if(pkt.pts != AV_NOPTS_VALUE)
2788                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2789             }
2790         }
2791
2792         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2793         if (output_packet(ist, output_streams, nb_output_streams, &pkt) < 0) {
2794
2795             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
2796                    ist->file_index, ist->st->index);
2797             if (exit_on_error)
2798                 exit_program(1);
2799             av_free_packet(&pkt);
2800             continue;
2801         }
2802
2803     discard_packet:
2804         av_free_packet(&pkt);
2805
2806         /* dump report by using the output first video and audio streams */
2807         print_report(output_files, output_streams, nb_output_streams, 0, timer_start, cur_time);
2808     }
2809
2810     /* at the end of stream, we must flush the decoder buffers */
2811     for (i = 0; i < nb_input_streams; i++) {
2812         ist = &input_streams[i];
2813         if (ist->decoding_needed) {
2814             output_packet(ist, output_streams, nb_output_streams, NULL);
2815         }
2816     }
2817     flush_encoders(output_streams, nb_output_streams);
2818
2819     term_exit();
2820
2821     /* write the trailer if needed and close file */
2822     for(i=0;i<nb_output_files;i++) {
2823         os = output_files[i].ctx;
2824         av_write_trailer(os);
2825     }
2826
2827     /* dump report by using the first video and audio streams */
2828     print_report(output_files, output_streams, nb_output_streams, 1, timer_start, av_gettime());
2829
2830     /* close each encoder */
2831     for (i = 0; i < nb_output_streams; i++) {
2832         ost = &output_streams[i];
2833         if (ost->encoding_needed) {
2834             av_freep(&ost->st->codec->stats_in);
2835             avcodec_close(ost->st->codec);
2836         }
2837 #if CONFIG_AVFILTER
2838         avfilter_graph_free(&ost->graph);
2839 #endif
2840     }
2841
2842     /* close each decoder */
2843     for (i = 0; i < nb_input_streams; i++) {
2844         ist = &input_streams[i];
2845         if (ist->decoding_needed) {
2846             avcodec_close(ist->st->codec);
2847         }
2848     }
2849
2850     /* finished ! */
2851     ret = 0;
2852
2853  fail:
2854     av_freep(&bit_buffer);
2855     av_freep(&no_packet);
2856
2857     if (output_streams) {
2858         for (i = 0; i < nb_output_streams; i++) {
2859             ost = &output_streams[i];
2860             if (ost) {
2861                 if (ost->stream_copy)
2862                     av_freep(&ost->st->codec->extradata);
2863                 if (ost->logfile) {
2864                     fclose(ost->logfile);
2865                     ost->logfile = NULL;
2866                 }
2867                 av_fifo_free(ost->fifo); /* works even if fifo is not
2868                                              initialized but set to zero */
2869                 av_freep(&ost->st->codec->subtitle_header);
2870                 av_free(ost->resample_frame.data[0]);
2871                 av_free(ost->forced_kf_pts);
2872                 if (ost->video_resample)
2873                     sws_freeContext(ost->img_resample_ctx);
2874                 swr_free(&ost->swr);
2875                 av_dict_free(&ost->opts);
2876             }
2877         }
2878     }
2879     return ret;
2880 }
2881
2882 static int opt_frame_crop(const char *opt, const char *arg)
2883 {
2884     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the crop filter instead\n", opt);
2885     return AVERROR(EINVAL);
2886 }
2887
2888 static int opt_pad(const char *opt, const char *arg)
2889 {
2890     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the pad filter instead\n", opt);
2891     return -1;
2892 }
2893
2894 static double parse_frame_aspect_ratio(const char *arg)
2895 {
2896     int x = 0, y = 0;
2897     double ar = 0;
2898     const char *p;
2899     char *end;
2900
2901     p = strchr(arg, ':');
2902     if (p) {
2903         x = strtol(arg, &end, 10);
2904         if (end == p)
2905             y = strtol(end+1, &end, 10);
2906         if (x > 0 && y > 0)
2907             ar = (double)x / (double)y;
2908     } else
2909         ar = strtod(arg, NULL);
2910
2911     if (!ar) {
2912         av_log(NULL, AV_LOG_FATAL, "Incorrect aspect ratio specification.\n");
2913         exit_program(1);
2914     }
2915     return ar;
2916 }
2917
2918 static int opt_video_channel(const char *opt, const char *arg)
2919 {
2920     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
2921     return opt_default("channel", arg);
2922 }
2923
2924 static int opt_video_standard(const char *opt, const char *arg)
2925 {
2926     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
2927     return opt_default("standard", arg);
2928 }
2929
2930 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2931 {
2932     audio_codec_name = arg;
2933     return parse_option(o, "codec:a", arg, options);
2934 }
2935
2936 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2937 {
2938     video_codec_name = arg;
2939     return parse_option(o, "codec:v", arg, options);
2940 }
2941
2942 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2943 {
2944     subtitle_codec_name = arg;
2945     return parse_option(o, "codec:s", arg, options);
2946 }
2947
2948 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2949 {
2950     return parse_option(o, "codec:d", arg, options);
2951 }
2952
2953 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2954 {
2955     StreamMap *m = NULL;
2956     int i, negative = 0, file_idx;
2957     int sync_file_idx = -1, sync_stream_idx;
2958     char *p, *sync;
2959     char *map;
2960
2961     if (*arg == '-') {
2962         negative = 1;
2963         arg++;
2964     }
2965     map = av_strdup(arg);
2966
2967     /* parse sync stream first, just pick first matching stream */
2968     if (sync = strchr(map, ',')) {
2969         *sync = 0;
2970         sync_file_idx = strtol(sync + 1, &sync, 0);
2971         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2972             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
2973             exit_program(1);
2974         }
2975         if (*sync)
2976             sync++;
2977         for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2978             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2979                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2980                 sync_stream_idx = i;
2981                 break;
2982             }
2983         if (i == input_files[sync_file_idx].nb_streams) {
2984             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
2985                                        "match any streams.\n", arg);
2986             exit_program(1);
2987         }
2988     }
2989
2990
2991     file_idx = strtol(map, &p, 0);
2992     if (file_idx >= nb_input_files || file_idx < 0) {
2993         av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
2994         exit_program(1);
2995     }
2996     if (negative)
2997         /* disable some already defined maps */
2998         for (i = 0; i < o->nb_stream_maps; i++) {
2999             m = &o->stream_maps[i];
3000             if (file_idx == m->file_index &&
3001                 check_stream_specifier(input_files[m->file_index].ctx,
3002                                        input_files[m->file_index].ctx->streams[m->stream_index],
3003                                        *p == ':' ? p + 1 : p) > 0)
3004                 m->disabled = 1;
3005         }
3006     else
3007         for (i = 0; i < input_files[file_idx].nb_streams; i++) {
3008             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
3009                         *p == ':' ? p + 1 : p) <= 0)
3010                 continue;
3011             o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
3012                                         &o->nb_stream_maps, o->nb_stream_maps + 1);
3013             m = &o->stream_maps[o->nb_stream_maps - 1];
3014
3015             m->file_index   = file_idx;
3016             m->stream_index = i;
3017
3018             if (sync_file_idx >= 0) {
3019                 m->sync_file_index   = sync_file_idx;
3020                 m->sync_stream_index = sync_stream_idx;
3021             } else {
3022                 m->sync_file_index   = file_idx;
3023                 m->sync_stream_index = i;
3024             }
3025         }
3026
3027     if (!m) {
3028         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
3029         exit_program(1);
3030     }
3031
3032     av_freep(&map);
3033     return 0;
3034 }
3035
3036 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
3037 {
3038     o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
3039                                 &o->nb_attachments, o->nb_attachments + 1);
3040     o->attachments[o->nb_attachments - 1] = arg;
3041     return 0;
3042 }
3043
3044 static int opt_map_channel(OptionsContext *o, const char *opt, const char *arg)
3045 {
3046     int n;
3047     AVStream *st;
3048     AudioChannelMap *m;
3049
3050     o->audio_channel_maps =
3051         grow_array(o->audio_channel_maps, sizeof(*o->audio_channel_maps),
3052                    &o->nb_audio_channel_maps, o->nb_audio_channel_maps + 1);
3053     m = &o->audio_channel_maps[o->nb_audio_channel_maps - 1];
3054
3055     /* muted channel syntax */
3056     n = sscanf(arg, "%d:%d.%d", &m->channel_idx, &m->ofile_idx, &m->ostream_idx);
3057     if ((n == 1 || n == 3) && m->channel_idx == -1) {
3058         m->file_idx = m->stream_idx = -1;
3059         if (n == 1)
3060             m->ofile_idx = m->ostream_idx = -1;
3061         return 0;
3062     }
3063
3064     /* normal syntax */
3065     n = sscanf(arg, "%d.%d.%d:%d.%d",
3066                &m->file_idx,  &m->stream_idx, &m->channel_idx,
3067                &m->ofile_idx, &m->ostream_idx);
3068
3069     if (n != 3 && n != 5) {
3070         av_log(NULL, AV_LOG_FATAL, "Syntax error, mapchan usage: "
3071                "[file.stream.channel|-1][:syncfile:syncstream]\n");
3072         exit_program(1);
3073     }
3074
3075     if (n != 5) // only file.stream.channel specified
3076         m->ofile_idx = m->ostream_idx = -1;
3077
3078     /* check input */
3079     if (m->file_idx < 0 || m->file_idx >= nb_input_files) {
3080         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file index: %d\n",
3081                m->file_idx);
3082         exit_program(1);
3083     }
3084     if (m->stream_idx < 0 ||
3085         m->stream_idx >= input_files[m->file_idx].nb_streams) {
3086         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file stream index #%d.%d\n",
3087                m->file_idx, m->stream_idx);
3088         exit_program(1);
3089     }
3090     st = input_files[m->file_idx].ctx->streams[m->stream_idx];
3091     if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO) {
3092         av_log(NULL, AV_LOG_FATAL, "mapchan: stream #%d.%d is not an audio stream.\n",
3093                m->file_idx, m->stream_idx);
3094         exit_program(1);
3095     }
3096     if (m->channel_idx < 0 || m->channel_idx >= st->codec->channels) {
3097         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid audio channel #%d.%d.%d\n",
3098                m->file_idx, m->stream_idx, m->channel_idx);
3099         exit_program(1);
3100     }
3101     return 0;
3102 }
3103
3104 static void parse_meta_type(char *arg, char *type, int *index)
3105 {
3106     if (*arg) {
3107         *type = *arg;
3108         switch (*arg) {
3109         case 'g':
3110             break;
3111         case 's':
3112         case 'c':
3113         case 'p':
3114             if (*(++arg) == ':')
3115                 *index = strtol(++arg, NULL, 0);
3116             break;
3117         default:
3118             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
3119             exit_program(1);
3120         }
3121     } else
3122         *type = 'g';
3123 }
3124
3125 static int opt_map_metadata(OptionsContext *o, const char *opt, const char *arg)
3126 {
3127     MetadataMap *m, *m1;
3128     char *p;
3129
3130     o->meta_data_maps = grow_array(o->meta_data_maps, sizeof(*o->meta_data_maps),
3131                                    &o->nb_meta_data_maps, o->nb_meta_data_maps + 1);
3132
3133     m = &o->meta_data_maps[o->nb_meta_data_maps - 1][1];
3134     m->file = strtol(arg, &p, 0);
3135     parse_meta_type(*p ? p + 1 : p, &m->type, &m->index);
3136
3137     m1 = &o->meta_data_maps[o->nb_meta_data_maps - 1][0];
3138     if (p = strchr(opt, ':'))
3139         parse_meta_type(p + 1, &m1->type, &m1->index);
3140     else
3141         m1->type = 'g';
3142
3143     if (m->type == 'g' || m1->type == 'g')
3144         o->metadata_global_manual = 1;
3145     if (m->type == 's' || m1->type == 's')
3146         o->metadata_streams_manual = 1;
3147     if (m->type == 'c' || m1->type == 'c')
3148         o->metadata_chapters_manual = 1;
3149
3150     return 0;
3151 }
3152
3153 static int opt_map_meta_data(OptionsContext *o, const char *opt, const char *arg)
3154 {
3155     av_log(NULL, AV_LOG_WARNING, "-map_meta_data is deprecated and will be removed soon. "
3156                     "Use -map_metadata instead.\n");
3157     return opt_map_metadata(o, opt, arg);
3158 }
3159
3160 static int opt_recording_timestamp(OptionsContext *o, const char *opt, const char *arg)
3161 {
3162     char buf[128];
3163     int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
3164     struct tm time = *gmtime((time_t*)&recording_timestamp);
3165     strftime(buf, sizeof(buf), "creation_time=%FT%T%z", &time);
3166     parse_option(o, "metadata", buf, options);
3167
3168     av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
3169                                  "tag instead.\n", opt);
3170     return 0;
3171 }
3172
3173 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
3174 {
3175     const char *codec_string = encoder ? "encoder" : "decoder";
3176     AVCodec *codec;
3177
3178     codec = encoder ?
3179         avcodec_find_encoder_by_name(name) :
3180         avcodec_find_decoder_by_name(name);
3181     if(!codec) {
3182         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
3183         exit_program(1);
3184     }
3185     if(codec->type != type) {
3186         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
3187         exit_program(1);
3188     }
3189     return codec;
3190 }
3191
3192 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
3193 {
3194     char *codec_name = NULL;
3195
3196     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
3197     if (codec_name) {
3198         AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
3199         st->codec->codec_id = codec->id;
3200         return codec;
3201     } else
3202         return avcodec_find_decoder(st->codec->codec_id);
3203 }
3204
3205 /**
3206  * Add all the streams from the given input file to the global
3207  * list of input streams.
3208  */
3209 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
3210 {
3211     int i, rfps, rfps_base;
3212     char *next, *codec_tag = NULL;
3213
3214     for (i = 0; i < ic->nb_streams; i++) {
3215         AVStream *st = ic->streams[i];
3216         AVCodecContext *dec = st->codec;
3217         InputStream *ist;
3218
3219         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3220         ist = &input_streams[nb_input_streams - 1];
3221         ist->st = st;
3222         ist->file_index = nb_input_files;
3223         ist->discard = 1;
3224         ist->opts = filter_codec_opts(codec_opts, choose_decoder(o, ic, st), ic, st);
3225
3226         ist->ts_scale = 1.0;
3227         MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
3228
3229         MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, ic, st);
3230         if (codec_tag) {
3231             uint32_t tag = strtol(codec_tag, &next, 0);
3232             if (*next)
3233                 tag = AV_RL32(codec_tag);
3234             st->codec->codec_tag = tag;
3235         }
3236
3237         ist->dec = choose_decoder(o, ic, st);
3238
3239         switch (dec->codec_type) {
3240         case AVMEDIA_TYPE_AUDIO:
3241             if(!ist->dec)
3242                 ist->dec = avcodec_find_decoder(dec->codec_id);
3243             if(o->audio_disable)
3244                 st->discard= AVDISCARD_ALL;
3245             break;
3246         case AVMEDIA_TYPE_VIDEO:
3247             if(!ist->dec)
3248                 ist->dec = avcodec_find_decoder(dec->codec_id);
3249             rfps      = ic->streams[i]->r_frame_rate.num;
3250             rfps_base = ic->streams[i]->r_frame_rate.den;
3251             if (dec->lowres) {
3252                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3253             }
3254
3255             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3256
3257                 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",
3258                        i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3259                        (float)rfps / rfps_base, rfps, rfps_base);
3260             }
3261
3262             if (o->video_disable)
3263                 st->discard= AVDISCARD_ALL;
3264             else if(video_discard)
3265                 st->discard= video_discard;
3266             break;
3267         case AVMEDIA_TYPE_DATA:
3268             if (o->data_disable)
3269                 st->discard= AVDISCARD_ALL;
3270             break;
3271         case AVMEDIA_TYPE_SUBTITLE:
3272             if(!ist->dec)
3273                 ist->dec = avcodec_find_decoder(dec->codec_id);
3274             if(o->subtitle_disable)
3275                 st->discard = AVDISCARD_ALL;
3276             break;
3277         case AVMEDIA_TYPE_ATTACHMENT:
3278         case AVMEDIA_TYPE_UNKNOWN:
3279             break;
3280         default:
3281             abort();
3282         }
3283     }
3284 }
3285
3286 static void assert_file_overwrite(const char *filename)
3287 {
3288     if ((!file_overwrite || no_file_overwrite) &&
3289         (strchr(filename, ':') == NULL || filename[1] == ':' ||
3290          av_strstart(filename, "file:", NULL))) {
3291         if (avio_check(filename, 0) == 0) {
3292             if (!using_stdin && (!no_file_overwrite || file_overwrite)) {
3293                 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3294                 fflush(stderr);
3295                 term_exit();
3296                 if (!read_yesno()) {
3297                     av_log(0, AV_LOG_FATAL, "Not overwriting - exiting\n");
3298                     exit_program(1);
3299                 }
3300                 term_init();
3301             }
3302             else {
3303                 av_log(0, AV_LOG_FATAL, "File '%s' already exists. Exiting.\n", filename);
3304                 exit_program(1);
3305             }
3306         }
3307     }
3308 }
3309
3310 static void dump_attachment(AVStream *st, const char *filename)
3311 {
3312     int ret;
3313     AVIOContext *out = NULL;
3314     AVDictionaryEntry *e;
3315
3316     if (!st->codec->extradata_size) {
3317         av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
3318                nb_input_files - 1, st->index);
3319         return;
3320     }
3321     if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
3322         filename = e->value;
3323     if (!*filename) {
3324         av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
3325                "in stream #%d:%d.\n", nb_input_files - 1, st->index);
3326         exit_program(1);
3327     }
3328
3329     assert_file_overwrite(filename);
3330
3331     if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
3332         av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
3333                filename);
3334         exit_program(1);
3335     }
3336
3337     avio_write(out, st->codec->extradata, st->codec->extradata_size);
3338     avio_flush(out);
3339     avio_close(out);
3340 }
3341
3342 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
3343 {
3344     AVFormatContext *ic;
3345     AVInputFormat *file_iformat = NULL;
3346     int err, i, ret;
3347     int64_t timestamp;
3348     uint8_t buf[128];
3349     AVDictionary **opts;
3350     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
3351
3352     if (o->format) {
3353         if (!(file_iformat = av_find_input_format(o->format))) {
3354             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
3355             exit_program(1);
3356         }
3357     }
3358
3359     if (!strcmp(filename, "-"))
3360         filename = "pipe:";
3361
3362     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3363                     !strcmp(filename, "/dev/stdin");
3364
3365     /* get default parameters from command line */
3366     ic = avformat_alloc_context();
3367     if (!ic) {
3368         print_error(filename, AVERROR(ENOMEM));
3369         exit_program(1);
3370     }
3371     if (o->nb_audio_sample_rate) {
3372         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
3373         av_dict_set(&format_opts, "sample_rate", buf, 0);
3374     }
3375     if (o->nb_audio_channels) {
3376         snprintf(buf, sizeof(buf), "%d", o->audio_channels[o->nb_audio_channels - 1].u.i);
3377         av_dict_set(&format_opts, "channels", buf, 0);
3378     }
3379     if (o->nb_frame_rates) {
3380         av_dict_set(&format_opts, "framerate", o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
3381     }
3382     if (o->nb_frame_sizes) {
3383         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
3384     }
3385     if (o->nb_frame_pix_fmts)
3386         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
3387
3388     ic->video_codec_id   = video_codec_name ?
3389         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0)->id : CODEC_ID_NONE;
3390     ic->audio_codec_id   = audio_codec_name ?
3391         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0)->id : CODEC_ID_NONE;
3392     ic->subtitle_codec_id= subtitle_codec_name ?
3393         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0)->id : CODEC_ID_NONE;
3394     ic->flags |= AVFMT_FLAG_NONBLOCK;
3395     ic->interrupt_callback = int_cb;
3396
3397     if (loop_input) {
3398         av_log(NULL, AV_LOG_WARNING,
3399             "-loop_input is deprecated, use -loop 1\n"
3400             "Note, both loop options only work with -f image2\n"
3401         );
3402         ic->loop_input = loop_input;
3403     }
3404
3405     /* open the input file with generic avformat function */
3406     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3407     if (err < 0) {
3408         print_error(filename, err);
3409         exit_program(1);
3410     }
3411     assert_avoptions(format_opts);
3412
3413     /* apply forced codec ids */
3414     for (i = 0; i < ic->nb_streams; i++)
3415         choose_decoder(o, ic, ic->streams[i]);
3416
3417     /* Set AVCodecContext options for avformat_find_stream_info */
3418     opts = setup_find_stream_info_opts(ic, codec_opts);
3419     orig_nb_streams = ic->nb_streams;
3420
3421     /* If not enough info to get the stream parameters, we decode the
3422        first frames to get it. (used in mpeg case for example) */
3423     ret = avformat_find_stream_info(ic, opts);
3424     if (ret < 0) {
3425         av_log(NULL, AV_LOG_FATAL, "%s: could not find codec parameters\n", filename);
3426         avformat_close_input(&ic);
3427         exit_program(1);
3428     }
3429
3430     timestamp = o->start_time;
3431     /* add the stream start time */
3432     if (ic->start_time != AV_NOPTS_VALUE)
3433         timestamp += ic->start_time;
3434
3435     /* if seeking requested, we execute it */
3436     if (o->start_time != 0) {
3437         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3438         if (ret < 0) {
3439             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
3440                    filename, (double)timestamp / AV_TIME_BASE);
3441         }
3442     }
3443
3444     /* update the current parameters so that they match the one of the input stream */
3445     add_input_streams(o, ic);
3446
3447     /* dump the file content */
3448     av_dump_format(ic, nb_input_files, filename, 0);
3449
3450     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3451     input_files[nb_input_files - 1].ctx        = ic;
3452     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3453     input_files[nb_input_files - 1].ts_offset  = o->input_ts_offset - (copy_ts ? 0 : timestamp);
3454     input_files[nb_input_files - 1].nb_streams = ic->nb_streams;
3455     input_files[nb_input_files - 1].rate_emu   = o->rate_emu;
3456
3457     for (i = 0; i < o->nb_dump_attachment; i++) {
3458         int j;
3459
3460         for (j = 0; j < ic->nb_streams; j++) {
3461             AVStream *st = ic->streams[j];
3462
3463             if (check_stream_specifier(ic, st, o->dump_attachment[i].specifier) == 1)
3464                 dump_attachment(st, o->dump_attachment[i].u.str);
3465         }
3466     }
3467
3468     for (i = 0; i < orig_nb_streams; i++)
3469         av_dict_free(&opts[i]);
3470     av_freep(&opts);
3471
3472     reset_options(o, 1);
3473     return 0;
3474 }
3475
3476 static void parse_forced_key_frames(char *kf, OutputStream *ost)
3477 {
3478     char *p;
3479     int n = 1, i;
3480
3481     for (p = kf; *p; p++)
3482         if (*p == ',')
3483             n++;
3484     ost->forced_kf_count = n;
3485     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
3486     if (!ost->forced_kf_pts) {
3487         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
3488         exit_program(1);
3489     }
3490     for (i = 0; i < n; i++) {
3491         p = i ? strchr(p, ',') + 1 : kf;
3492         ost->forced_kf_pts[i] = parse_time_or_die("force_key_frames", p, 1);
3493     }
3494 }
3495
3496 static uint8_t *get_line(AVIOContext *s)
3497 {
3498     AVIOContext *line;
3499     uint8_t *buf;
3500     char c;
3501
3502     if (avio_open_dyn_buf(&line) < 0) {
3503         av_log(NULL, AV_LOG_FATAL, "Could not alloc buffer for reading preset.\n");
3504         exit_program(1);
3505     }
3506
3507     while ((c = avio_r8(s)) && c != '\n')
3508         avio_w8(line, c);
3509     avio_w8(line, 0);
3510     avio_close_dyn_buf(line, &buf);
3511
3512     return buf;
3513 }
3514
3515 static int get_preset_file_2(const char *preset_name, const char *codec_name, AVIOContext **s)
3516 {
3517     int i, ret = 1;
3518     char filename[1000];
3519     const char *base[3] = { getenv("AVCONV_DATADIR"),
3520                             getenv("HOME"),
3521                             AVCONV_DATADIR,
3522                             };
3523
3524     for (i = 0; i < FF_ARRAY_ELEMS(base) && ret; i++) {
3525         if (!base[i])
3526             continue;
3527         if (codec_name) {
3528             snprintf(filename, sizeof(filename), "%s%s/%s-%s.avpreset", base[i],
3529                      i != 1 ? "" : "/.avconv", codec_name, preset_name);
3530             ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
3531         }
3532         if (ret) {
3533             snprintf(filename, sizeof(filename), "%s%s/%s.avpreset", base[i],
3534                      i != 1 ? "" : "/.avconv", preset_name);
3535             ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
3536         }
3537     }
3538     return ret;
3539 }
3540
3541 static void choose_encoder(OptionsContext *o, AVFormatContext *s, OutputStream *ost)
3542 {
3543     char *codec_name = NULL;
3544
3545     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, ost->st);
3546     if (!codec_name) {
3547         ost->st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename,
3548                                                   NULL, ost->st->codec->codec_type);
3549         ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
3550     } else if (!strcmp(codec_name, "copy"))
3551         ost->stream_copy = 1;
3552     else {
3553         ost->enc = find_codec_or_die(codec_name, ost->st->codec->codec_type, 1);
3554         ost->st->codec->codec_id = ost->enc->id;
3555     }
3556 }
3557
3558 static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
3559 {
3560     OutputStream *ost;
3561     AVStream *st = avformat_new_stream(oc, NULL);
3562     int idx      = oc->nb_streams - 1, ret = 0;
3563     char *bsf = NULL, *next, *codec_tag = NULL;
3564     AVBitStreamFilterContext *bsfc, *bsfc_prev = NULL;
3565     double qscale = -1;
3566     char *buf = NULL, *arg = NULL, *preset = NULL;
3567     AVIOContext *s = NULL;
3568
3569     if (!st) {
3570         av_log(NULL, AV_LOG_FATAL, "Could not alloc stream.\n");
3571         exit_program(1);
3572     }
3573
3574     if (oc->nb_streams - 1 < o->nb_streamid_map)
3575         st->id = o->streamid_map[oc->nb_streams - 1];
3576
3577     output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
3578                                 nb_output_streams + 1);
3579     ost = &output_streams[nb_output_streams - 1];
3580     ost->file_index = nb_output_files;
3581     ost->index = idx;
3582     ost->st    = st;
3583     st->codec->codec_type = type;
3584     choose_encoder(o, oc, ost);
3585     if (ost->enc) {
3586         ost->opts  = filter_codec_opts(codec_opts, ost->enc, oc, st);
3587     }
3588
3589     avcodec_get_context_defaults3(st->codec, ost->enc);
3590     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
3591
3592     MATCH_PER_STREAM_OPT(presets, str, preset, oc, st);
3593     if (preset && (!(ret = get_preset_file_2(preset, ost->enc->name, &s)))) {
3594         do  {
3595             buf = get_line(s);
3596             if (!buf[0] || buf[0] == '#') {
3597                 av_free(buf);
3598                 continue;
3599             }
3600             if (!(arg = strchr(buf, '='))) {
3601                 av_log(NULL, AV_LOG_FATAL, "Invalid line found in the preset file.\n");
3602                 exit_program(1);
3603             }
3604             *arg++ = 0;
3605             av_dict_set(&ost->opts, buf, arg, AV_DICT_DONT_OVERWRITE);
3606             av_free(buf);
3607         } while (!s->eof_reached);
3608         avio_close(s);
3609     }
3610     if (ret) {
3611         av_log(NULL, AV_LOG_FATAL,
3612                "Preset %s specified for stream %d:%d, but could not be opened.\n",
3613                preset, ost->file_index, ost->index);
3614         exit_program(1);
3615     }
3616
3617     ost->max_frames = INT64_MAX;
3618     MATCH_PER_STREAM_OPT(max_frames, i64, ost->max_frames, oc, st);
3619
3620     MATCH_PER_STREAM_OPT(bitstream_filters, str, bsf, oc, st);
3621     while (bsf) {
3622         if (next = strchr(bsf, ','))
3623             *next++ = 0;
3624         if (!(bsfc = av_bitstream_filter_init(bsf))) {
3625             av_log(NULL, AV_LOG_FATAL, "Unknown bitstream filter %s\n", bsf);
3626             exit_program(1);
3627         }
3628         if (bsfc_prev)
3629             bsfc_prev->next = bsfc;
3630         else
3631             ost->bitstream_filters = bsfc;
3632
3633         bsfc_prev = bsfc;
3634         bsf       = next;
3635     }
3636
3637     MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, oc, st);
3638     if (codec_tag) {
3639         uint32_t tag = strtol(codec_tag, &next, 0);
3640         if (*next)
3641             tag = AV_RL32(codec_tag);
3642         st->codec->codec_tag = tag;
3643     }
3644
3645     MATCH_PER_STREAM_OPT(qscale, dbl, qscale, oc, st);
3646     if (qscale >= 0 || same_quant) {
3647         st->codec->flags |= CODEC_FLAG_QSCALE;
3648         st->codec->global_quality = FF_QP2LAMBDA * qscale;
3649     }
3650
3651     if (oc->oformat->flags & AVFMT_GLOBALHEADER)
3652         st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
3653
3654     av_opt_get_int(sws_opts, "sws_flags", 0, &ost->sws_flags);
3655     return ost;
3656 }
3657
3658 static void parse_matrix_coeffs(uint16_t *dest, const char *str)
3659 {
3660     int i;
3661     const char *p = str;
3662     for(i = 0;; i++) {
3663         dest[i] = atoi(p);
3664         if(i == 63)
3665             break;
3666         p = strchr(p, ',');
3667         if(!p) {
3668             av_log(NULL, AV_LOG_FATAL, "Syntax error in matrix \"%s\" at coeff %d\n", str, i);
3669             exit_program(1);
3670         }
3671         p++;
3672     }
3673 }
3674
3675 static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc)