ffmpeg: fix two unused variables warnings.
[ffmpeg.git] / avconv.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
49 #include "libavformat/ffm.h" // not public API
50
51 #if CONFIG_AVFILTER
52 # include "libavfilter/avcodec.h"
53 # include "libavfilter/avfilter.h"
54 # include "libavfilter/avfiltergraph.h"
55 # include "libavfilter/vsink_buffer.h"
56 # include "libavfilter/vsrc_buffer.h"
57 #endif
58
59 #if HAVE_SYS_RESOURCE_H
60 #include <sys/types.h>
61 #include <sys/time.h>
62 #include <sys/resource.h>
63 #elif HAVE_GETPROCESSTIMES
64 #include <windows.h>
65 #endif
66 #if HAVE_GETPROCESSMEMORYINFO
67 #include <windows.h>
68 #include <psapi.h>
69 #endif
70
71 #if HAVE_SYS_SELECT_H
72 #include <sys/select.h>
73 #endif
74
75 #if HAVE_TERMIOS_H
76 #include <fcntl.h>
77 #include <sys/ioctl.h>
78 #include <sys/time.h>
79 #include <termios.h>
80 #elif HAVE_KBHIT
81 #include <conio.h>
82 #endif
83 #include <time.h>
84
85 #include "cmdutils.h"
86
87 #include "libavutil/avassert.h"
88
89 const char program_name[] = "avconv";
90 const int program_birth_year = 2000;
91
92 /* select an input stream for an output stream */
93 typedef struct StreamMap {
94     int disabled;           /** 1 is this mapping is disabled by a negative map */
95     int file_index;
96     int stream_index;
97     int sync_file_index;
98     int sync_stream_index;
99 } StreamMap;
100
101 /**
102  * select an input file for an output file
103  */
104 typedef struct MetadataMap {
105     int  file;      ///< file index
106     char type;      ///< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
107     int  index;     ///< stream/chapter/program number
108 } MetadataMap;
109
110 static const OptionDef options[];
111
112 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
113 static const char *last_asked_format = NULL;
114 static AVDictionary *ts_scale;
115
116 static StreamMap *stream_maps = NULL;
117 static int nb_stream_maps;
118
119 static AVDictionary *codec_names;
120
121 /* first item specifies output metadata, second is input */
122 static MetadataMap (*meta_data_maps)[2] = NULL;
123 static int nb_meta_data_maps;
124 static int metadata_global_autocopy   = 1;
125 static int metadata_streams_autocopy  = 1;
126 static int metadata_chapters_autocopy = 1;
127
128 static int chapters_input_file = INT_MAX;
129
130 /* indexed by output file stream index */
131 static int *streamid_map = NULL;
132 static int nb_streamid_map = 0;
133
134 static int frame_width  = 0;
135 static int frame_height = 0;
136 static float frame_aspect_ratio = 0;
137 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
138 static int frame_bits_per_raw_sample = 0;
139 static enum AVSampleFormat audio_sample_fmt = AV_SAMPLE_FMT_NONE;
140 static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
141 static AVRational frame_rate;
142 static float video_qscale = 0;
143 static uint16_t *intra_matrix = NULL;
144 static uint16_t *inter_matrix = NULL;
145 static const char *video_rc_override_string=NULL;
146 static int video_disable = 0;
147 static int video_discard = 0;
148 static unsigned int video_codec_tag = 0;
149 static char *video_language = NULL;
150 static int same_quant = 0;
151 static int do_deinterlace = 0;
152 static int top_field_first = -1;
153 static int me_threshold = 0;
154 static int intra_dc_precision = 8;
155 static int qp_hist = 0;
156 #if CONFIG_AVFILTER
157 static char *vfilters = NULL;
158 #endif
159
160 static int audio_sample_rate = 0;
161 #define QSCALE_NONE -99999
162 static float audio_qscale = QSCALE_NONE;
163 static int audio_disable = 0;
164 static int audio_channels = 0;
165 static unsigned int audio_codec_tag = 0;
166 static char *audio_language = NULL;
167
168 static int subtitle_disable = 0;
169 static char *subtitle_language = NULL;
170 static unsigned int subtitle_codec_tag = 0;
171
172 static int data_disable = 0;
173 static unsigned int data_codec_tag = 0;
174
175 static float mux_preload= 0.5;
176 static float mux_max_delay= 0.7;
177
178 static int64_t recording_time = INT64_MAX;
179 static int64_t start_time = 0;
180 static int64_t input_ts_offset = 0;
181 static int file_overwrite = 0;
182 static AVDictionary *metadata;
183 static int do_benchmark = 0;
184 static int do_hex_dump = 0;
185 static int do_pkt_dump = 0;
186 static int do_psnr = 0;
187 static int do_pass = 0;
188 static const char *pass_logfilename_prefix;
189 static int video_sync_method= -1;
190 static int audio_sync_method= 0;
191 static float audio_drift_threshold= 0.1;
192 static int copy_ts= 0;
193 static int copy_tb= 0;
194 static int opt_shortest = 0;
195 static char *vstats_filename;
196 static FILE *vstats_file;
197 static int opt_programid = 0;
198 static int copy_initial_nonkeyframes = 0;
199
200 static int rate_emu = 0;
201
202 static int audio_volume = 256;
203
204 static int exit_on_error = 0;
205 static int using_stdin = 0;
206 static int verbose = 1;
207 static int run_as_daemon  = 0;
208 static int q_pressed = 0;
209 static int64_t video_size = 0;
210 static int64_t audio_size = 0;
211 static int64_t extra_size = 0;
212 static int nb_frames_dup = 0;
213 static int nb_frames_drop = 0;
214 static int input_sync;
215 static uint64_t limit_filesize = UINT64_MAX;
216 static int force_fps = 0;
217 static char *forced_key_frames = NULL;
218
219 static float dts_delta_threshold = 10;
220
221 static uint8_t *audio_buf;
222 static uint8_t *audio_out;
223 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
224
225 static short *samples;
226
227 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
228 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
229 static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL;
230
231 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
232
233 typedef struct InputStream {
234     int file_index;
235     AVStream *st;
236     int discard;             /* true if stream data should be discarded */
237     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
238     AVCodec *dec;
239
240     int64_t       start;     /* time when read started */
241     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
242                                 is not defined */
243     int64_t       pts;       /* current pts */
244     double ts_scale;
245     int is_start;            /* is 1 at the start and after a discontinuity */
246     int showed_multi_packet_warning;
247     AVDictionary *opts;
248 } InputStream;
249
250 typedef struct InputFile {
251     AVFormatContext *ctx;
252     int eof_reached;      /* true if eof reached */
253     int ist_index;        /* index of first stream in ist_table */
254     int buffer_size;      /* current total buffer size */
255     int64_t ts_offset;
256     int nb_streams;       /* number of stream that avconv is aware of; may be different
257                              from ctx.nb_streams if new streams appear during av_read_frame() */
258 } InputFile;
259
260 typedef struct OutputStream {
261     int file_index;          /* file index */
262     int index;               /* stream index in the output file */
263     int source_index;        /* InputStream index */
264     AVStream *st;            /* stream in the output file */
265     int encoding_needed;     /* true if encoding needed for this stream */
266     int frame_number;
267     /* input pts and corresponding output pts
268        for A/V sync */
269     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
270     struct InputStream *sync_ist; /* input stream to sync against */
271     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
272     AVBitStreamFilterContext *bitstream_filters;
273     AVCodec *enc;
274
275     /* video only */
276     int video_resample;
277     AVFrame resample_frame;              /* temporary frame for image resampling */
278     struct SwsContext *img_resample_ctx; /* for image resampling */
279     int resample_height;
280     int resample_width;
281     int resample_pix_fmt;
282     AVRational frame_rate;
283
284     float frame_aspect_ratio;
285
286     /* forced key frames */
287     int64_t *forced_kf_pts;
288     int forced_kf_count;
289     int forced_kf_index;
290
291     /* audio only */
292     int audio_resample;
293     ReSampleContext *resample; /* for audio resampling */
294     int resample_sample_fmt;
295     int resample_channels;
296     int resample_sample_rate;
297     int reformat_pair;
298     AVAudioConvert *reformat_ctx;
299     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
300     FILE *logfile;
301
302 #if CONFIG_AVFILTER
303     AVFilterContext *output_video_filter;
304     AVFilterContext *input_video_filter;
305     AVFilterBufferRef *picref;
306     char *avfilter;
307     AVFilterGraph *graph;
308 #endif
309
310    int sws_flags;
311    AVDictionary *opts;
312    int is_past_recording_time;
313 } OutputStream;
314
315 #if HAVE_TERMIOS_H
316
317 /* init terminal so that we can grab keys */
318 static struct termios oldtty;
319 #endif
320
321 typedef struct OutputFile {
322     AVFormatContext *ctx;
323     AVDictionary *opts;
324     int ost_index;       /* index of the first stream in output_streams */
325     int64_t recording_time; /* desired length of the resulting file in microseconds */
326     int64_t start_time;     /* start time in microseconds */
327     uint64_t limit_filesize;
328 } OutputFile;
329
330 static InputStream *input_streams = NULL;
331 static int         nb_input_streams = 0;
332 static InputFile   *input_files   = NULL;
333 static int         nb_input_files   = 0;
334
335 static OutputStream *output_streams = NULL;
336 static int        nb_output_streams = 0;
337 static OutputFile   *output_files   = NULL;
338 static int        nb_output_files   = 0;
339
340 #if CONFIG_AVFILTER
341
342 static int configure_video_filters(InputStream *ist, OutputStream *ost)
343 {
344     AVFilterContext *last_filter, *filter;
345     /** filter graph containing all filters including input & output */
346     AVCodecContext *codec = ost->st->codec;
347     AVCodecContext *icodec = ist->st->codec;
348     enum PixelFormat pix_fmts[] = { codec->pix_fmt, PIX_FMT_NONE };
349     AVRational sample_aspect_ratio;
350     char args[255];
351     int ret;
352
353     ost->graph = avfilter_graph_alloc();
354
355     if (ist->st->sample_aspect_ratio.num){
356         sample_aspect_ratio = ist->st->sample_aspect_ratio;
357     }else
358         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
359
360     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
361              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
362              sample_aspect_ratio.num, sample_aspect_ratio.den);
363
364     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
365                                        "src", args, NULL, ost->graph);
366     if (ret < 0)
367         return ret;
368     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
369                                        "out", NULL, pix_fmts, ost->graph);
370     if (ret < 0)
371         return ret;
372     last_filter = ost->input_video_filter;
373
374     if (codec->width  != icodec->width || codec->height != icodec->height) {
375         snprintf(args, 255, "%d:%d:flags=0x%X",
376                  codec->width,
377                  codec->height,
378                  ost->sws_flags);
379         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
380                                                 NULL, args, NULL, ost->graph)) < 0)
381             return ret;
382         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
383             return ret;
384         last_filter = filter;
385     }
386
387     snprintf(args, sizeof(args), "flags=0x%X", ost->sws_flags);
388     ost->graph->scale_sws_opts = av_strdup(args);
389
390     if (ost->avfilter) {
391         AVFilterInOut *outputs = avfilter_inout_alloc();
392         AVFilterInOut *inputs  = avfilter_inout_alloc();
393
394         outputs->name    = av_strdup("in");
395         outputs->filter_ctx = last_filter;
396         outputs->pad_idx = 0;
397         outputs->next    = NULL;
398
399         inputs->name    = av_strdup("out");
400         inputs->filter_ctx = ost->output_video_filter;
401         inputs->pad_idx = 0;
402         inputs->next    = NULL;
403
404         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, &inputs, &outputs, NULL)) < 0)
405             return ret;
406         av_freep(&ost->avfilter);
407     } else {
408         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
409             return ret;
410     }
411
412     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
413         return ret;
414
415     codec->width  = ost->output_video_filter->inputs[0]->w;
416     codec->height = ost->output_video_filter->inputs[0]->h;
417     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
418         ost->frame_aspect_ratio ? // overridden by the -aspect cli option
419         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
420         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
421
422     return 0;
423 }
424 #endif /* CONFIG_AVFILTER */
425
426 static void term_exit(void)
427 {
428     av_log(NULL, AV_LOG_QUIET, "%s", "");
429 #if HAVE_TERMIOS_H
430     if(!run_as_daemon)
431         tcsetattr (0, TCSANOW, &oldtty);
432 #endif
433 }
434
435 static volatile int received_sigterm = 0;
436
437 static void
438 sigterm_handler(int sig)
439 {
440     received_sigterm = sig;
441     q_pressed++;
442     term_exit();
443 }
444
445 static void term_init(void)
446 {
447 #if HAVE_TERMIOS_H
448     if(!run_as_daemon){
449     struct termios tty;
450
451     tcgetattr (0, &tty);
452     oldtty = tty;
453     atexit(term_exit);
454
455     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
456                           |INLCR|IGNCR|ICRNL|IXON);
457     tty.c_oflag |= OPOST;
458     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
459     tty.c_cflag &= ~(CSIZE|PARENB);
460     tty.c_cflag |= CS8;
461     tty.c_cc[VMIN] = 1;
462     tty.c_cc[VTIME] = 0;
463
464     tcsetattr (0, TCSANOW, &tty);
465     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
466     }
467 #endif
468
469     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
470     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
471 #ifdef SIGXCPU
472     signal(SIGXCPU, sigterm_handler);
473 #endif
474 }
475
476 /* read a key without blocking */
477 static int read_key(void)
478 {
479 #if HAVE_TERMIOS_H
480     int n = 1;
481     unsigned char ch;
482     struct timeval tv;
483     fd_set rfds;
484
485     if(run_as_daemon)
486         return -1;
487
488     FD_ZERO(&rfds);
489     FD_SET(0, &rfds);
490     tv.tv_sec = 0;
491     tv.tv_usec = 0;
492     n = select(1, &rfds, NULL, NULL, &tv);
493     if (n > 0) {
494         n = read(0, &ch, 1);
495         if (n == 1)
496             return ch;
497
498         return n;
499     }
500 #elif HAVE_KBHIT
501     if(kbhit())
502         return(getch());
503 #endif
504     return -1;
505 }
506
507 static int decode_interrupt_cb(void)
508 {
509     q_pressed += read_key() == 'q';
510     return q_pressed > 1;
511 }
512
513 static int exit_program(int ret)
514 {
515     int i;
516
517     /* close files */
518     for(i=0;i<nb_output_files;i++) {
519         AVFormatContext *s = output_files[i].ctx;
520         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
521             avio_close(s->pb);
522         avformat_free_context(s);
523         av_dict_free(&output_files[i].opts);
524     }
525     for(i=0;i<nb_input_files;i++) {
526         av_close_input_file(input_files[i].ctx);
527     }
528     for (i = 0; i < nb_input_streams; i++)
529         av_dict_free(&input_streams[i].opts);
530
531     av_free(intra_matrix);
532     av_free(inter_matrix);
533
534     if (vstats_file)
535         fclose(vstats_file);
536     av_free(vstats_filename);
537
538     av_free(meta_data_maps);
539
540     av_freep(&input_streams);
541     av_freep(&input_files);
542     av_freep(&output_streams);
543     av_freep(&output_files);
544
545     uninit_opts();
546     av_free(audio_buf);
547     av_free(audio_out);
548     allocated_audio_buf_size= allocated_audio_out_size= 0;
549     av_free(samples);
550
551 #if CONFIG_AVFILTER
552     avfilter_uninit();
553 #endif
554
555     if (received_sigterm) {
556         fprintf(stderr,
557             "Received signal %d: terminating.\n",
558             (int) received_sigterm);
559         exit (255);
560     }
561
562     exit(ret); /* not all OS-es handle main() return value */
563     return ret;
564 }
565
566 static void assert_avoptions(AVDictionary *m)
567 {
568     AVDictionaryEntry *t;
569     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
570         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
571         exit_program(1);
572     }
573 }
574
575 static void assert_codec_experimental(AVCodecContext *c, int encoder)
576 {
577     const char *codec_string = encoder ? "encoder" : "decoder";
578     AVCodec *codec;
579     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
580         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
581         av_log(NULL, AV_LOG_ERROR, "%s '%s' is experimental and might produce bad "
582                 "results.\nAdd '-strict experimental' if you want to use it.\n",
583                 codec_string, c->codec->name);
584         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
585         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
586             av_log(NULL, AV_LOG_ERROR, "Or use the non experimental %s '%s'.\n",
587                    codec_string, codec->name);
588         exit_program(1);
589     }
590 }
591
592 /* similar to ff_dynarray_add() and av_fast_realloc() */
593 static void *grow_array(void *array, int elem_size, int *size, int new_size)
594 {
595     if (new_size >= INT_MAX / elem_size) {
596         fprintf(stderr, "Array too big.\n");
597         exit_program(1);
598     }
599     if (*size < new_size) {
600         uint8_t *tmp = av_realloc(array, new_size*elem_size);
601         if (!tmp) {
602             fprintf(stderr, "Could not alloc buffer.\n");
603             exit_program(1);
604         }
605         memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
606         *size = new_size;
607         return tmp;
608     }
609     return array;
610 }
611
612 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
613 {
614     if(codec && codec->sample_fmts){
615         const enum AVSampleFormat *p= codec->sample_fmts;
616         for(; *p!=-1; p++){
617             if(*p == st->codec->sample_fmt)
618                 break;
619         }
620         if (*p == -1) {
621             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
622                 av_log(NULL, AV_LOG_ERROR, "Convertion will not be lossless'\n");
623             if(av_get_sample_fmt_name(st->codec->sample_fmt))
624             av_log(NULL, AV_LOG_WARNING,
625                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
626                    av_get_sample_fmt_name(st->codec->sample_fmt),
627                    codec->name,
628                    av_get_sample_fmt_name(codec->sample_fmts[0]));
629             st->codec->sample_fmt = codec->sample_fmts[0];
630         }
631     }
632 }
633
634 static void choose_sample_rate(AVStream *st, AVCodec *codec)
635 {
636     if(codec && codec->supported_samplerates){
637         const int *p= codec->supported_samplerates;
638         int best=0;
639         int best_dist=INT_MAX;
640         for(; *p; p++){
641             int dist= abs(st->codec->sample_rate - *p);
642             if(dist < best_dist){
643                 best_dist= dist;
644                 best= *p;
645             }
646         }
647         if(best_dist){
648             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
649         }
650         st->codec->sample_rate= best;
651     }
652 }
653
654 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
655 {
656     if(codec && codec->pix_fmts){
657         const enum PixelFormat *p= codec->pix_fmts;
658         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
659             if(st->codec->codec_id==CODEC_ID_MJPEG){
660                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
661             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
662                 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};
663             }
664         }
665         for(; *p!=-1; p++){
666             if(*p == st->codec->pix_fmt)
667                 break;
668         }
669         if (*p == -1) {
670             if(st->codec->pix_fmt != PIX_FMT_NONE)
671                 av_log(NULL, AV_LOG_WARNING,
672                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
673                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
674                         codec->name,
675                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
676             st->codec->pix_fmt = codec->pix_fmts[0];
677         }
678     }
679 }
680
681 static double
682 get_sync_ipts(const OutputStream *ost)
683 {
684     const InputStream *ist = ost->sync_ist;
685     OutputFile *of = &output_files[ost->file_index];
686     return (double)(ist->pts - of->start_time)/AV_TIME_BASE;
687 }
688
689 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
690     int ret;
691
692     while(bsfc){
693         AVPacket new_pkt= *pkt;
694         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
695                                           &new_pkt.data, &new_pkt.size,
696                                           pkt->data, pkt->size,
697                                           pkt->flags & AV_PKT_FLAG_KEY);
698         if(a>0){
699             av_free_packet(pkt);
700             new_pkt.destruct= av_destruct_packet;
701         } else if(a<0){
702             fprintf(stderr, "%s failed for stream %d, codec %s",
703                     bsfc->filter->name, pkt->stream_index,
704                     avctx->codec ? avctx->codec->name : "copy");
705             print_error("", a);
706             if (exit_on_error)
707                 exit_program(1);
708         }
709         *pkt= new_pkt;
710
711         bsfc= bsfc->next;
712     }
713
714     ret= av_interleaved_write_frame(s, pkt);
715     if(ret < 0){
716         print_error("av_interleaved_write_frame()", ret);
717         exit_program(1);
718     }
719 }
720
721 static void do_audio_out(AVFormatContext *s,
722                          OutputStream *ost,
723                          InputStream *ist,
724                          unsigned char *buf, int size)
725 {
726     uint8_t *buftmp;
727     int64_t audio_out_size, audio_buf_size;
728     int64_t allocated_for_size= size;
729
730     int size_out, frame_bytes, ret, resample_changed;
731     AVCodecContext *enc= ost->st->codec;
732     AVCodecContext *dec= ist->st->codec;
733     int osize = av_get_bytes_per_sample(enc->sample_fmt);
734     int isize = av_get_bytes_per_sample(dec->sample_fmt);
735     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
736
737 need_realloc:
738     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
739     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
740     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
741     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
742     audio_buf_size*= osize*enc->channels;
743
744     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
745     if(coded_bps > 8*osize)
746         audio_out_size= audio_out_size * coded_bps / (8*osize);
747     audio_out_size += FF_MIN_BUFFER_SIZE;
748
749     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
750         fprintf(stderr, "Buffer sizes too large\n");
751         exit_program(1);
752     }
753
754     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
755     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
756     if (!audio_buf || !audio_out){
757         fprintf(stderr, "Out of memory in do_audio_out\n");
758         exit_program(1);
759     }
760
761     if (enc->channels != dec->channels)
762         ost->audio_resample = 1;
763
764     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
765                        ost->resample_channels    != dec->channels   ||
766                        ost->resample_sample_rate != dec->sample_rate;
767
768     if ((ost->audio_resample && !ost->resample) || resample_changed) {
769         if (resample_changed) {
770             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",
771                    ist->file_index, ist->st->index,
772                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
773                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
774             ost->resample_sample_fmt  = dec->sample_fmt;
775             ost->resample_channels    = dec->channels;
776             ost->resample_sample_rate = dec->sample_rate;
777             if (ost->resample)
778                 audio_resample_close(ost->resample);
779         }
780         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
781         if (audio_sync_method <= 1 &&
782             ost->resample_sample_fmt  == enc->sample_fmt &&
783             ost->resample_channels    == enc->channels   &&
784             ost->resample_sample_rate == enc->sample_rate) {
785             ost->resample = NULL;
786             ost->audio_resample = 0;
787         } else {
788             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
789                 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
790             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
791                                                    enc->sample_rate, dec->sample_rate,
792                                                    enc->sample_fmt,  dec->sample_fmt,
793                                                    16, 10, 0, 0.8);
794             if (!ost->resample) {
795                 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
796                         dec->channels, dec->sample_rate,
797                         enc->channels, enc->sample_rate);
798                 exit_program(1);
799             }
800         }
801     }
802
803 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
804     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
805         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
806         if (ost->reformat_ctx)
807             av_audio_convert_free(ost->reformat_ctx);
808         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
809                                                    dec->sample_fmt, 1, NULL, 0);
810         if (!ost->reformat_ctx) {
811             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
812                 av_get_sample_fmt_name(dec->sample_fmt),
813                 av_get_sample_fmt_name(enc->sample_fmt));
814             exit_program(1);
815         }
816         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
817     }
818
819     if(audio_sync_method){
820         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
821                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
822         double idelta= delta*dec->sample_rate / enc->sample_rate;
823         int byte_delta= ((int)idelta)*2*dec->channels;
824
825         //FIXME resample delay
826         if(fabs(delta) > 50){
827             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
828                 if(byte_delta < 0){
829                     byte_delta= FFMAX(byte_delta, -size);
830                     size += byte_delta;
831                     buf  -= byte_delta;
832                     if(verbose > 2)
833                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
834                     if(!size)
835                         return;
836                     ist->is_start=0;
837                 }else{
838                     static uint8_t *input_tmp= NULL;
839                     input_tmp= av_realloc(input_tmp, byte_delta + size);
840
841                     if(byte_delta > allocated_for_size - size){
842                         allocated_for_size= byte_delta + (int64_t)size;
843                         goto need_realloc;
844                     }
845                     ist->is_start=0;
846
847                     memset(input_tmp, 0, byte_delta);
848                     memcpy(input_tmp + byte_delta, buf, size);
849                     buf= input_tmp;
850                     size += byte_delta;
851                     if(verbose > 2)
852                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
853                 }
854             }else if(audio_sync_method>1){
855                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
856                 av_assert0(ost->audio_resample);
857                 if(verbose > 2)
858                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
859 //                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));
860                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
861             }
862         }
863     }else
864         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
865                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
866
867     if (ost->audio_resample) {
868         buftmp = audio_buf;
869         size_out = audio_resample(ost->resample,
870                                   (short *)buftmp, (short *)buf,
871                                   size / (dec->channels * isize));
872         size_out = size_out * enc->channels * osize;
873     } else {
874         buftmp = buf;
875         size_out = size;
876     }
877
878     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
879         const void *ibuf[6]= {buftmp};
880         void *obuf[6]= {audio_buf};
881         int istride[6]= {isize};
882         int ostride[6]= {osize};
883         int len= size_out/istride[0];
884         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
885             printf("av_audio_convert() failed\n");
886             if (exit_on_error)
887                 exit_program(1);
888             return;
889         }
890         buftmp = audio_buf;
891         size_out = len*osize;
892     }
893
894     /* now encode as many frames as possible */
895     if (enc->frame_size > 1) {
896         /* output resampled raw samples */
897         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
898             fprintf(stderr, "av_fifo_realloc2() failed\n");
899             exit_program(1);
900         }
901         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
902
903         frame_bytes = enc->frame_size * osize * enc->channels;
904
905         while (av_fifo_size(ost->fifo) >= frame_bytes) {
906             AVPacket pkt;
907             av_init_packet(&pkt);
908
909             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
910
911             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
912
913             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
914                                        (short *)audio_buf);
915             if (ret < 0) {
916                 fprintf(stderr, "Audio encoding failed\n");
917                 exit_program(1);
918             }
919             audio_size += ret;
920             pkt.stream_index= ost->index;
921             pkt.data= audio_out;
922             pkt.size= ret;
923             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
924                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
925             pkt.flags |= AV_PKT_FLAG_KEY;
926             write_frame(s, &pkt, enc, ost->bitstream_filters);
927
928             ost->sync_opts += enc->frame_size;
929         }
930     } else {
931         AVPacket pkt;
932         av_init_packet(&pkt);
933
934         ost->sync_opts += size_out / (osize * enc->channels);
935
936         /* output a pcm frame */
937         /* determine the size of the coded buffer */
938         size_out /= osize;
939         if (coded_bps)
940             size_out = size_out*coded_bps/8;
941
942         if(size_out > audio_out_size){
943             fprintf(stderr, "Internal error, buffer size too small\n");
944             exit_program(1);
945         }
946
947         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
948         ret = avcodec_encode_audio(enc, audio_out, size_out,
949                                    (short *)buftmp);
950         if (ret < 0) {
951             fprintf(stderr, "Audio encoding failed\n");
952             exit_program(1);
953         }
954         audio_size += ret;
955         pkt.stream_index= ost->index;
956         pkt.data= audio_out;
957         pkt.size= ret;
958         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
959             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
960         pkt.flags |= AV_PKT_FLAG_KEY;
961         write_frame(s, &pkt, enc, ost->bitstream_filters);
962     }
963 }
964
965 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
966 {
967     AVCodecContext *dec;
968     AVPicture *picture2;
969     AVPicture picture_tmp;
970     uint8_t *buf = 0;
971
972     dec = ist->st->codec;
973
974     /* deinterlace : must be done before any resize */
975     if (do_deinterlace) {
976         int size;
977
978         /* create temporary picture */
979         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
980         buf = av_malloc(size);
981         if (!buf)
982             return;
983
984         picture2 = &picture_tmp;
985         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
986
987         if(avpicture_deinterlace(picture2, picture,
988                                  dec->pix_fmt, dec->width, dec->height) < 0) {
989             /* if error, do not deinterlace */
990             fprintf(stderr, "Deinterlacing failed\n");
991             av_free(buf);
992             buf = NULL;
993             picture2 = picture;
994         }
995     } else {
996         picture2 = picture;
997     }
998
999     if (picture != picture2)
1000         *picture = *picture2;
1001     *bufp = buf;
1002 }
1003
1004 static void do_subtitle_out(AVFormatContext *s,
1005                             OutputStream *ost,
1006                             InputStream *ist,
1007                             AVSubtitle *sub,
1008                             int64_t pts)
1009 {
1010     static uint8_t *subtitle_out = NULL;
1011     int subtitle_out_max_size = 1024 * 1024;
1012     int subtitle_out_size, nb, i;
1013     AVCodecContext *enc;
1014     AVPacket pkt;
1015
1016     if (pts == AV_NOPTS_VALUE) {
1017         fprintf(stderr, "Subtitle packets must have a pts\n");
1018         if (exit_on_error)
1019             exit_program(1);
1020         return;
1021     }
1022
1023     enc = ost->st->codec;
1024
1025     if (!subtitle_out) {
1026         subtitle_out = av_malloc(subtitle_out_max_size);
1027     }
1028
1029     /* Note: DVB subtitle need one packet to draw them and one other
1030        packet to clear them */
1031     /* XXX: signal it in the codec context ? */
1032     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1033         nb = 2;
1034     else
1035         nb = 1;
1036
1037     for(i = 0; i < nb; i++) {
1038         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1039         // start_display_time is required to be 0
1040         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1041         sub->end_display_time -= sub->start_display_time;
1042         sub->start_display_time = 0;
1043         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1044                                                     subtitle_out_max_size, sub);
1045         if (subtitle_out_size < 0) {
1046             fprintf(stderr, "Subtitle encoding failed\n");
1047             exit_program(1);
1048         }
1049
1050         av_init_packet(&pkt);
1051         pkt.stream_index = ost->index;
1052         pkt.data = subtitle_out;
1053         pkt.size = subtitle_out_size;
1054         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1055         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1056             /* XXX: the pts correction is handled here. Maybe handling
1057                it in the codec would be better */
1058             if (i == 0)
1059                 pkt.pts += 90 * sub->start_display_time;
1060             else
1061                 pkt.pts += 90 * sub->end_display_time;
1062         }
1063         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1064     }
1065 }
1066
1067 static int bit_buffer_size= 1024*256;
1068 static uint8_t *bit_buffer= NULL;
1069
1070 static void do_video_resample(OutputStream *ost,
1071                               InputStream *ist,
1072                               AVFrame *in_picture,
1073                               AVFrame **out_picture)
1074 {
1075     int resample_changed = 0;
1076     AVCodecContext *dec = ist->st->codec;
1077     AVCodecContext *enc = ost->st->codec;
1078     *out_picture = in_picture;
1079
1080     resample_changed = ost->resample_width   != dec->width  ||
1081                        ost->resample_height  != dec->height ||
1082                        ost->resample_pix_fmt != dec->pix_fmt;
1083
1084 #if !CONFIG_AVFILTER
1085     if (resample_changed) {
1086         av_log(NULL, AV_LOG_INFO,
1087                "Input stream #%d.%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1088                ist->file_index, ist->st->index,
1089                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1090                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1091         ost->resample_width   = dec->width;
1092         ost->resample_height  = dec->height;
1093         ost->resample_pix_fmt = dec->pix_fmt;
1094     }
1095
1096     ost->video_resample = dec->width   != enc->width  ||
1097                           dec->height  != enc->height ||
1098                           dec->pix_fmt != enc->pix_fmt;
1099
1100     if (ost->video_resample) {
1101         *out_picture = &ost->resample_frame;
1102         if (!ost->img_resample_ctx || resample_changed) {
1103             /* initialize the destination picture */
1104             if (!ost->resample_frame.data[0]) {
1105                 avcodec_get_frame_defaults(&ost->resample_frame);
1106                 if (avpicture_alloc((AVPicture *)&ost->resample_frame, enc->pix_fmt,
1107                                     enc->width, enc->height)) {
1108                     fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
1109                     exit_program(1);
1110                 }
1111             }
1112             /* initialize a new scaler context */
1113             sws_freeContext(ost->img_resample_ctx);
1114             ost->img_resample_ctx = sws_getContext(dec->width, dec->height, dec->pix_fmt,
1115                                                    enc->width, enc->height, enc->pix_fmt,
1116                                                    ost->sws_flags, NULL, NULL, NULL);
1117             if (ost->img_resample_ctx == NULL) {
1118                 fprintf(stderr, "Cannot get resampling context\n");
1119                 exit_program(1);
1120             }
1121         }
1122         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1123               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1124     }
1125 #else
1126     if (resample_changed) {
1127         avfilter_graph_free(&ost->graph);
1128         if (configure_video_filters(ist, ost)) {
1129             fprintf(stderr, "Error reinitializing filters!\n");
1130             exit_program(1);
1131         }
1132     }
1133 #endif
1134     if (resample_changed) {
1135         ost->resample_width   = dec->width;
1136         ost->resample_height  = dec->height;
1137         ost->resample_pix_fmt = dec->pix_fmt;
1138     }
1139 }
1140
1141
1142 static void do_video_out(AVFormatContext *s,
1143                          OutputStream *ost,
1144                          InputStream *ist,
1145                          AVFrame *in_picture,
1146                          int *frame_size, float quality)
1147 {
1148     int nb_frames, i, ret, format_video_sync;
1149     AVFrame *final_picture;
1150     AVCodecContext *enc;
1151     double sync_ipts;
1152
1153     enc = ost->st->codec;
1154
1155     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1156
1157     /* by default, we output a single frame */
1158     nb_frames = 1;
1159
1160     *frame_size = 0;
1161
1162     format_video_sync = video_sync_method;
1163     if (format_video_sync < 0)
1164         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? 2 : 1;
1165
1166     if (format_video_sync) {
1167         double vdelta = sync_ipts - ost->sync_opts;
1168         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1169         if (vdelta < -1.1)
1170             nb_frames = 0;
1171         else if (format_video_sync == 2) {
1172             if(vdelta<=-0.6){
1173                 nb_frames=0;
1174             }else if(vdelta>0.6)
1175                 ost->sync_opts= lrintf(sync_ipts);
1176         }else if (vdelta > 1.1)
1177             nb_frames = lrintf(vdelta);
1178 //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);
1179         if (nb_frames == 0){
1180             ++nb_frames_drop;
1181             if (verbose>2)
1182                 fprintf(stderr, "*** drop!\n");
1183         }else if (nb_frames > 1) {
1184             nb_frames_dup += nb_frames - 1;
1185             if (verbose>2)
1186                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1187         }
1188     }else
1189         ost->sync_opts= lrintf(sync_ipts);
1190
1191     nb_frames= FFMIN(nb_frames, max_frames[AVMEDIA_TYPE_VIDEO] - ost->frame_number);
1192     if (nb_frames <= 0)
1193         return;
1194
1195     do_video_resample(ost, ist, in_picture, &final_picture);
1196
1197     /* duplicates frame if needed */
1198     for(i=0;i<nb_frames;i++) {
1199         AVPacket pkt;
1200         av_init_packet(&pkt);
1201         pkt.stream_index= ost->index;
1202
1203         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1204             /* raw pictures are written as AVPicture structure to
1205                avoid any copies. We support temporarily the older
1206                method. */
1207             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1208             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1209             pkt.data= (uint8_t *)final_picture;
1210             pkt.size=  sizeof(AVPicture);
1211             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1212             pkt.flags |= AV_PKT_FLAG_KEY;
1213
1214             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1215         } else {
1216             AVFrame big_picture;
1217
1218             big_picture= *final_picture;
1219             /* better than nothing: use input picture interlaced
1220                settings */
1221             big_picture.interlaced_frame = in_picture->interlaced_frame;
1222             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1223                 if(top_field_first == -1)
1224                     big_picture.top_field_first = in_picture->top_field_first;
1225                 else
1226                     big_picture.top_field_first = top_field_first;
1227             }
1228
1229             /* handles same_quant here. This is not correct because it may
1230                not be a global option */
1231             big_picture.quality = quality;
1232             if(!me_threshold)
1233                 big_picture.pict_type = 0;
1234 //            big_picture.pts = AV_NOPTS_VALUE;
1235             big_picture.pts= ost->sync_opts;
1236 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1237 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1238             if (ost->forced_kf_index < ost->forced_kf_count &&
1239                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1240                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1241                 ost->forced_kf_index++;
1242             }
1243             ret = avcodec_encode_video(enc,
1244                                        bit_buffer, bit_buffer_size,
1245                                        &big_picture);
1246             if (ret < 0) {
1247                 fprintf(stderr, "Video encoding failed\n");
1248                 exit_program(1);
1249             }
1250
1251             if(ret>0){
1252                 pkt.data= bit_buffer;
1253                 pkt.size= ret;
1254                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1255                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1256 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1257    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1258    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1259
1260                 if(enc->coded_frame->key_frame)
1261                     pkt.flags |= AV_PKT_FLAG_KEY;
1262                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1263                 *frame_size = ret;
1264                 video_size += ret;
1265                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1266                 //        enc->frame_number-1, ret, enc->pict_type);
1267                 /* if two pass, output log */
1268                 if (ost->logfile && enc->stats_out) {
1269                     fprintf(ost->logfile, "%s", enc->stats_out);
1270                 }
1271             }
1272         }
1273         ost->sync_opts++;
1274         ost->frame_number++;
1275     }
1276 }
1277
1278 static double psnr(double d){
1279     return -10.0*log(d)/log(10.0);
1280 }
1281
1282 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1283                            int frame_size)
1284 {
1285     AVCodecContext *enc;
1286     int frame_number;
1287     double ti1, bitrate, avg_bitrate;
1288
1289     /* this is executed just the first time do_video_stats is called */
1290     if (!vstats_file) {
1291         vstats_file = fopen(vstats_filename, "w");
1292         if (!vstats_file) {
1293             perror("fopen");
1294             exit_program(1);
1295         }
1296     }
1297
1298     enc = ost->st->codec;
1299     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1300         frame_number = ost->frame_number;
1301         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1302         if (enc->flags&CODEC_FLAG_PSNR)
1303             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1304
1305         fprintf(vstats_file,"f_size= %6d ", frame_size);
1306         /* compute pts value */
1307         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1308         if (ti1 < 0.01)
1309             ti1 = 0.01;
1310
1311         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1312         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1313         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1314             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1315         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1316     }
1317 }
1318
1319 static void print_report(OutputFile *output_files,
1320                          OutputStream *ost_table, int nb_ostreams,
1321                          int is_last_report, int64_t timer_start)
1322 {
1323     char buf[1024];
1324     OutputStream *ost;
1325     AVFormatContext *oc;
1326     int64_t total_size;
1327     AVCodecContext *enc;
1328     int frame_number, vid, i;
1329     double bitrate;
1330     int64_t pts = INT64_MAX;
1331     static int64_t last_time = -1;
1332     static int qp_histogram[52];
1333
1334     if (!is_last_report) {
1335         int64_t cur_time;
1336         /* display the report every 0.5 seconds */
1337         cur_time = av_gettime();
1338         if (last_time == -1) {
1339             last_time = cur_time;
1340             return;
1341         }
1342         if ((cur_time - last_time) < 500000)
1343             return;
1344         last_time = cur_time;
1345     }
1346
1347
1348     oc = output_files[0].ctx;
1349
1350     total_size = avio_size(oc->pb);
1351     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1352         total_size= avio_tell(oc->pb);
1353
1354     buf[0] = '\0';
1355     vid = 0;
1356     for(i=0;i<nb_ostreams;i++) {
1357         float q = -1;
1358         ost = &ost_table[i];
1359         enc = ost->st->codec;
1360         if (!ost->st->stream_copy && enc->coded_frame)
1361             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1362         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1363             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1364         }
1365         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1366             float t = (av_gettime()-timer_start) / 1000000.0;
1367
1368             frame_number = ost->frame_number;
1369             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1370                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1371             if(is_last_report)
1372                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1373             if(qp_hist){
1374                 int j;
1375                 int qp = lrintf(q);
1376                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1377                     qp_histogram[qp]++;
1378                 for(j=0; j<32; j++)
1379                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1380             }
1381             if (enc->flags&CODEC_FLAG_PSNR){
1382                 int j;
1383                 double error, error_sum=0;
1384                 double scale, scale_sum=0;
1385                 char type[3]= {'Y','U','V'};
1386                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1387                 for(j=0; j<3; j++){
1388                     if(is_last_report){
1389                         error= enc->error[j];
1390                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1391                     }else{
1392                         error= enc->coded_frame->error[j];
1393                         scale= enc->width*enc->height*255.0*255.0;
1394                     }
1395                     if(j) scale/=4;
1396                     error_sum += error;
1397                     scale_sum += scale;
1398                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1399                 }
1400                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1401             }
1402             vid = 1;
1403         }
1404         /* compute min output value */
1405         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
1406                                       ost->st->time_base, AV_TIME_BASE_Q));
1407     }
1408
1409     if (verbose > 0 || is_last_report) {
1410         int hours, mins, secs, us;
1411         secs = pts / AV_TIME_BASE;
1412         us = pts % AV_TIME_BASE;
1413         mins = secs / 60;
1414         secs %= 60;
1415         hours = mins / 60;
1416         mins %= 60;
1417
1418         bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1419
1420         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1421                  "size=%8.0fkB time=", total_size / 1024.0);
1422         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1423                  "%02d:%02d:%02d.%02d ", hours, mins, secs,
1424                  (100 * us) / AV_TIME_BASE);
1425         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1426                  "bitrate=%6.1fkbits/s", bitrate);
1427
1428         if (nb_frames_dup || nb_frames_drop)
1429           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1430                   nb_frames_dup, nb_frames_drop);
1431
1432         if (verbose >= 0)
1433             fprintf(stderr, "%s    \r", buf);
1434
1435         fflush(stderr);
1436     }
1437
1438     if (is_last_report && verbose >= 0){
1439         int64_t raw= audio_size + video_size + extra_size;
1440         fprintf(stderr, "\n");
1441         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1442                 video_size/1024.0,
1443                 audio_size/1024.0,
1444                 extra_size/1024.0,
1445                 100.0*(total_size - raw)/raw
1446         );
1447     }
1448 }
1449
1450 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1451 {
1452     int fill_char = 0x00;
1453     if (sample_fmt == AV_SAMPLE_FMT_U8)
1454         fill_char = 0x80;
1455     memset(buf, fill_char, size);
1456 }
1457
1458 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1459 {
1460     int i, ret;
1461
1462     for (i = 0; i < nb_ostreams; i++) {
1463         OutputStream   *ost = &ost_table[i];
1464         AVCodecContext *enc = ost->st->codec;
1465         AVFormatContext *os = output_files[ost->file_index].ctx;
1466
1467         if (!ost->encoding_needed)
1468             continue;
1469
1470         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1471             continue;
1472         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1473             continue;
1474
1475         for(;;) {
1476             AVPacket pkt;
1477             int fifo_bytes;
1478             av_init_packet(&pkt);
1479             pkt.stream_index= ost->index;
1480
1481             switch (ost->st->codec->codec_type) {
1482             case AVMEDIA_TYPE_AUDIO:
1483                 fifo_bytes = av_fifo_size(ost->fifo);
1484                 ret = 0;
1485                 /* encode any samples remaining in fifo */
1486                 if (fifo_bytes > 0) {
1487                     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1488                     int fs_tmp = enc->frame_size;
1489
1490                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1491                     if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1492                         enc->frame_size = fifo_bytes / (osize * enc->channels);
1493                     } else { /* pad */
1494                         int frame_bytes = enc->frame_size*osize*enc->channels;
1495                         if (allocated_audio_buf_size < frame_bytes)
1496                             exit_program(1);
1497                         generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1498                     }
1499
1500                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1501                     pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1502                                               ost->st->time_base.num, enc->sample_rate);
1503                     enc->frame_size = fs_tmp;
1504                 }
1505                 if (ret <= 0) {
1506                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1507                 }
1508                 if (ret < 0) {
1509                     fprintf(stderr, "Audio encoding failed\n");
1510                     exit_program(1);
1511                 }
1512                 audio_size += ret;
1513                 pkt.flags |= AV_PKT_FLAG_KEY;
1514                 break;
1515             case AVMEDIA_TYPE_VIDEO:
1516                 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1517                 if (ret < 0) {
1518                     fprintf(stderr, "Video encoding failed\n");
1519                     exit_program(1);
1520                 }
1521                 video_size += ret;
1522                 if(enc->coded_frame && enc->coded_frame->key_frame)
1523                     pkt.flags |= AV_PKT_FLAG_KEY;
1524                 if (ost->logfile && enc->stats_out) {
1525                     fprintf(ost->logfile, "%s", enc->stats_out);
1526                 }
1527                 break;
1528             default:
1529                 ret=-1;
1530             }
1531
1532             if (ret <= 0)
1533                 break;
1534             pkt.data = bit_buffer;
1535             pkt.size = ret;
1536             if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1537                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1538             write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1539         }
1540     }
1541 }
1542
1543 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1544 static int output_packet(InputStream *ist, int ist_index,
1545                          OutputStream *ost_table, int nb_ostreams,
1546                          const AVPacket *pkt)
1547 {
1548     AVFormatContext *os;
1549     OutputStream *ost;
1550     int ret, i;
1551     int got_output;
1552     AVFrame picture;
1553     void *buffer_to_free = NULL;
1554     static unsigned int samples_size= 0;
1555     AVSubtitle subtitle, *subtitle_to_free;
1556     int64_t pkt_pts = AV_NOPTS_VALUE;
1557 #if CONFIG_AVFILTER
1558     int frame_available;
1559 #endif
1560     float quality;
1561
1562     AVPacket avpkt;
1563     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1564
1565     if(ist->next_pts == AV_NOPTS_VALUE)
1566         ist->next_pts= ist->pts;
1567
1568     if (pkt == NULL) {
1569         /* EOF handling */
1570         av_init_packet(&avpkt);
1571         avpkt.data = NULL;
1572         avpkt.size = 0;
1573         goto handle_eof;
1574     } else {
1575         avpkt = *pkt;
1576     }
1577
1578     if(pkt->dts != AV_NOPTS_VALUE)
1579         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1580     if(pkt->pts != AV_NOPTS_VALUE)
1581         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1582
1583     //while we have more to decode or while the decoder did output something on EOF
1584     while (avpkt.size > 0 || (!pkt && got_output)) {
1585         uint8_t *data_buf, *decoded_data_buf;
1586         int data_size, decoded_data_size;
1587     handle_eof:
1588         ist->pts= ist->next_pts;
1589
1590         if(avpkt.size && avpkt.size != pkt->size &&
1591            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1592             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1593             ist->showed_multi_packet_warning=1;
1594         }
1595
1596         /* decode the packet if needed */
1597         decoded_data_buf = NULL; /* fail safe */
1598         decoded_data_size= 0;
1599         data_buf  = avpkt.data;
1600         data_size = avpkt.size;
1601         subtitle_to_free = NULL;
1602         if (ist->decoding_needed) {
1603             switch(ist->st->codec->codec_type) {
1604             case AVMEDIA_TYPE_AUDIO:{
1605                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1606                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1607                     av_free(samples);
1608                     samples= av_malloc(samples_size);
1609                 }
1610                 decoded_data_size= samples_size;
1611                     /* XXX: could avoid copy if PCM 16 bits with same
1612                        endianness as CPU */
1613                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1614                                             &avpkt);
1615                 if (ret < 0)
1616                     return ret;
1617                 avpkt.data += ret;
1618                 avpkt.size -= ret;
1619                 data_size   = ret;
1620                 got_output  = decoded_data_size > 0;
1621                 /* Some bug in mpeg audio decoder gives */
1622                 /* decoded_data_size < 0, it seems they are overflows */
1623                 if (!got_output) {
1624                     /* no audio frame */
1625                     continue;
1626                 }
1627                 decoded_data_buf = (uint8_t *)samples;
1628                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1629                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1630                 break;}
1631             case AVMEDIA_TYPE_VIDEO:
1632                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1633                     /* XXX: allocate picture correctly */
1634                     avcodec_get_frame_defaults(&picture);
1635                     avpkt.pts = pkt_pts;
1636                     avpkt.dts = ist->pts;
1637                     pkt_pts = AV_NOPTS_VALUE;
1638
1639                     ret = avcodec_decode_video2(ist->st->codec,
1640                                                 &picture, &got_output, &avpkt);
1641                     quality = same_quant ? picture.quality : 0;
1642                     if (ret < 0)
1643                         return ret;
1644                     if (!got_output) {
1645                         /* no picture yet */
1646                         goto discard_packet;
1647                     }
1648                     ist->next_pts = ist->pts = picture.best_effort_timestamp;
1649                     if (ist->st->codec->time_base.num != 0) {
1650                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1651                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1652                                           ist->st->codec->time_base.num * ticks) /
1653                             ist->st->codec->time_base.den;
1654                     }
1655                     avpkt.size = 0;
1656                     buffer_to_free = NULL;
1657                     pre_process_video_frame(ist, (AVPicture *)&picture, &buffer_to_free);
1658                     break;
1659             case AVMEDIA_TYPE_SUBTITLE:
1660                 ret = avcodec_decode_subtitle2(ist->st->codec,
1661                                                &subtitle, &got_output, &avpkt);
1662                 if (ret < 0)
1663                     return ret;
1664                 if (!got_output) {
1665                     goto discard_packet;
1666                 }
1667                 subtitle_to_free = &subtitle;
1668                 avpkt.size = 0;
1669                 break;
1670             default:
1671                 return -1;
1672             }
1673         } else {
1674             switch(ist->st->codec->codec_type) {
1675             case AVMEDIA_TYPE_AUDIO:
1676                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1677                     ist->st->codec->sample_rate;
1678                 break;
1679             case AVMEDIA_TYPE_VIDEO:
1680                 if (ist->st->codec->time_base.num != 0) {
1681                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1682                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1683                                       ist->st->codec->time_base.num * ticks) /
1684                         ist->st->codec->time_base.den;
1685                 }
1686                 break;
1687             }
1688             avpkt.size = 0;
1689         }
1690
1691         // preprocess audio (volume)
1692         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1693             if (audio_volume != 256) {
1694                 short *volp;
1695                 volp = samples;
1696                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1697                     int v = ((*volp) * audio_volume + 128) >> 8;
1698                     *volp++ = av_clip_int16(v);
1699                 }
1700             }
1701         }
1702
1703         /* frame rate emulation */
1704         if (rate_emu) {
1705             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1706             int64_t now = av_gettime() - ist->start;
1707             if (pts > now)
1708                 usleep(pts - now);
1709         }
1710         /* if output time reached then transcode raw format,
1711            encode packets and output them */
1712         for (i = 0; i < nb_ostreams; i++) {
1713             OutputFile *of = &output_files[ost_table[i].file_index];
1714             int frame_size;
1715
1716             ost = &ost_table[i];
1717             if (ost->source_index != ist_index)
1718                 continue;
1719
1720             if (of->start_time && ist->pts < of->start_time)
1721                 continue;
1722
1723             if (of->recording_time != INT64_MAX &&
1724                 av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1725                               (AVRational){1, 1000000}) >= 0) {
1726                 ost->is_past_recording_time = 1;
1727                 continue;
1728             }
1729
1730 #if CONFIG_AVFILTER
1731             if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1732                 ost->input_video_filter) {
1733                 if (!picture.sample_aspect_ratio.num)
1734                     picture.sample_aspect_ratio = ist->st->sample_aspect_ratio;
1735                 picture.pts = ist->pts;
1736
1737                 av_vsrc_buffer_add_frame(ost->input_video_filter, &picture, AV_VSRC_BUF_FLAG_OVERWRITE);
1738             }
1739             frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1740                 !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1741             while (frame_available) {
1742                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter) {
1743                     AVRational ist_pts_tb = ost->output_video_filter->inputs[0]->time_base;
1744                     if (av_vsink_buffer_get_video_buffer_ref(ost->output_video_filter, &ost->picref, 0) < 0)
1745                         goto cont;
1746                     if (ost->picref) {
1747                         avfilter_fill_frame_from_video_buffer_ref(&picture, ost->picref);
1748                         ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1749                     }
1750                 }
1751 #endif
1752                 os = output_files[ost->file_index].ctx;
1753
1754                 /* set the input output pts pairs */
1755                 //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
1756
1757                 if (ost->encoding_needed) {
1758                     av_assert0(ist->decoding_needed);
1759                     switch(ost->st->codec->codec_type) {
1760                     case AVMEDIA_TYPE_AUDIO:
1761                         do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1762                         break;
1763                     case AVMEDIA_TYPE_VIDEO:
1764 #if CONFIG_AVFILTER
1765                         if (ost->picref->video && !ost->frame_aspect_ratio)
1766                             ost->st->codec->sample_aspect_ratio = ost->picref->video->sample_aspect_ratio;
1767 #endif
1768                         do_video_out(os, ost, ist, &picture, &frame_size,
1769                                         same_quant ? quality : ost->st->codec->global_quality);
1770                         if (vstats_filename && frame_size)
1771                             do_video_stats(os, ost, frame_size);
1772                         break;
1773                     case AVMEDIA_TYPE_SUBTITLE:
1774                         do_subtitle_out(os, ost, ist, &subtitle,
1775                                         pkt->pts);
1776                         break;
1777                     default:
1778                         abort();
1779                     }
1780                 } else {
1781                     AVFrame avframe; //FIXME/XXX remove this
1782                     AVPicture pict;
1783                     AVPacket opkt;
1784                     int64_t ost_tb_start_time= av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1785                     av_init_packet(&opkt);
1786
1787                     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1788 #if !CONFIG_AVFILTER
1789                         continue;
1790 #else
1791                         goto cont;
1792 #endif
1793
1794                     /* no reencoding needed : output the packet directly */
1795                     /* force the input stream PTS */
1796
1797                     avcodec_get_frame_defaults(&avframe);
1798                     ost->st->codec->coded_frame= &avframe;
1799                     avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1800
1801                     if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1802                         audio_size += data_size;
1803                     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1804                         video_size += data_size;
1805                         ost->sync_opts++;
1806                     }
1807
1808                     opkt.stream_index= ost->index;
1809                     if(pkt->pts != AV_NOPTS_VALUE)
1810                         opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1811                     else
1812                         opkt.pts= AV_NOPTS_VALUE;
1813
1814                     if (pkt->dts == AV_NOPTS_VALUE)
1815                         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1816                     else
1817                         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1818                     opkt.dts -= ost_tb_start_time;
1819
1820                     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1821                     opkt.flags= pkt->flags;
1822
1823                     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1824                     if(   ost->st->codec->codec_id != CODEC_ID_H264
1825                        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1826                        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1827                        ) {
1828                         if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1829                             opkt.destruct= av_destruct_packet;
1830                     } else {
1831                         opkt.data = data_buf;
1832                         opkt.size = data_size;
1833                     }
1834
1835                     if (os->oformat->flags & AVFMT_RAWPICTURE) {
1836                         /* store AVPicture in AVPacket, as expected by the output format */
1837                         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1838                         opkt.data = (uint8_t *)&pict;
1839                         opkt.size = sizeof(AVPicture);
1840                         opkt.flags |= AV_PKT_FLAG_KEY;
1841                     }
1842                     write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1843                     ost->st->codec->frame_number++;
1844                     ost->frame_number++;
1845                     av_free_packet(&opkt);
1846                 }
1847 #if CONFIG_AVFILTER
1848                 cont:
1849                 frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1850                                    ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1851                 if (ost->picref)
1852                     avfilter_unref_buffer(ost->picref);
1853             }
1854 #endif
1855             }
1856
1857         av_free(buffer_to_free);
1858         /* XXX: allocate the subtitles in the codec ? */
1859         if (subtitle_to_free) {
1860             avsubtitle_free(subtitle_to_free);
1861             subtitle_to_free = NULL;
1862         }
1863     }
1864  discard_packet:
1865
1866     return 0;
1867 }
1868
1869 static void print_sdp(OutputFile *output_files, int n)
1870 {
1871     char sdp[2048];
1872     int i;
1873     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
1874
1875     if (!avc)
1876         exit_program(1);
1877     for (i = 0; i < n; i++)
1878         avc[i] = output_files[i].ctx;
1879
1880     av_sdp_create(avc, n, sdp, sizeof(sdp));
1881     printf("SDP:\n%s\n", sdp);
1882     fflush(stdout);
1883     av_freep(&avc);
1884 }
1885
1886 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
1887                              char *error, int error_len)
1888 {
1889     int i;
1890     InputStream *ist = &input_streams[ist_index];
1891     if (ist->decoding_needed) {
1892         AVCodec *codec = ist->dec;
1893         if (!codec) {
1894             snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
1895                     ist->st->codec->codec_id, ist->file_index, ist->st->index);
1896             return AVERROR(EINVAL);
1897         }
1898
1899         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
1900             snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
1901                     ist->file_index, ist->st->index);
1902             return AVERROR(EINVAL);
1903         }
1904         assert_codec_experimental(ist->st->codec, 0);
1905         assert_avoptions(ist->opts);
1906     }
1907
1908     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;
1909     ist->next_pts = AV_NOPTS_VALUE;
1910     ist->is_start = 1;
1911
1912     return 0;
1913 }
1914
1915 static int transcode_init(OutputFile *output_files,
1916                           int nb_output_files,
1917                           InputFile *input_files,
1918                           int nb_input_files)
1919 {
1920     int ret = 0, i;
1921     AVFormatContext *os;
1922     AVCodecContext *codec, *icodec;
1923     OutputStream *ost;
1924     InputStream *ist;
1925     char error[1024];
1926     int want_sdp = 1;
1927
1928     if (rate_emu)
1929         for (i = 0; i < nb_input_streams; i++)
1930             input_streams[i].start = av_gettime();
1931
1932     /* output stream init */
1933     for(i=0;i<nb_output_files;i++) {
1934         os = output_files[i].ctx;
1935         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1936             av_dump_format(os, i, os->filename, 1);
1937             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
1938             return AVERROR(EINVAL);
1939         }
1940     }
1941
1942     /* for each output stream, we compute the right encoding parameters */
1943     for (i = 0; i < nb_output_streams; i++) {
1944         ost = &output_streams[i];
1945         os = output_files[ost->file_index].ctx;
1946         ist = &input_streams[ost->source_index];
1947
1948         codec = ost->st->codec;
1949         icodec = ist->st->codec;
1950
1951         ost->st->disposition = ist->st->disposition;
1952         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
1953         codec->chroma_sample_location = icodec->chroma_sample_location;
1954
1955         if (ost->st->stream_copy) {
1956             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
1957
1958             if (extra_size > INT_MAX) {
1959                 return AVERROR(EINVAL);
1960             }
1961
1962             /* if stream_copy is selected, no need to decode or encode */
1963             codec->codec_id = icodec->codec_id;
1964             codec->codec_type = icodec->codec_type;
1965
1966             if(!codec->codec_tag){
1967                 if(   !os->oformat->codec_tag
1968                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
1969                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
1970                     codec->codec_tag = icodec->codec_tag;
1971             }
1972
1973             codec->bit_rate = icodec->bit_rate;
1974             codec->rc_max_rate    = icodec->rc_max_rate;
1975             codec->rc_buffer_size = icodec->rc_buffer_size;
1976             codec->extradata= av_mallocz(extra_size);
1977             if (!codec->extradata) {
1978                 return AVERROR(ENOMEM);
1979             }
1980             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
1981             codec->extradata_size= icodec->extradata_size;
1982
1983             codec->time_base = ist->st->time_base;
1984             if(!strcmp(os->oformat->name, "avi")) {
1985                 if(!copy_tb && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base) && av_q2d(ist->st->time_base) < 1.0/500){
1986                     codec->time_base = icodec->time_base;
1987                     codec->time_base.num *= icodec->ticks_per_frame;
1988                     codec->time_base.den *= 2;
1989                 }
1990             } else if(!(os->oformat->flags & AVFMT_VARIABLE_FPS)) {
1991                 if(!copy_tb && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base) && av_q2d(ist->st->time_base) < 1.0/500){
1992                     codec->time_base = icodec->time_base;
1993                     codec->time_base.num *= icodec->ticks_per_frame;
1994                 }
1995             }
1996             av_reduce(&codec->time_base.num, &codec->time_base.den,
1997                         codec->time_base.num, codec->time_base.den, INT_MAX);
1998
1999             switch(codec->codec_type) {
2000             case AVMEDIA_TYPE_AUDIO:
2001                 if(audio_volume != 256) {
2002                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2003                     exit_program(1);
2004                 }
2005                 codec->channel_layout = icodec->channel_layout;
2006                 codec->sample_rate = icodec->sample_rate;
2007                 codec->channels = icodec->channels;
2008                 codec->frame_size = icodec->frame_size;
2009                 codec->audio_service_type = icodec->audio_service_type;
2010                 codec->block_align= icodec->block_align;
2011                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2012                     codec->block_align= 0;
2013                 if(codec->codec_id == CODEC_ID_AC3)
2014                     codec->block_align= 0;
2015                 break;
2016             case AVMEDIA_TYPE_VIDEO:
2017                 codec->pix_fmt = icodec->pix_fmt;
2018                 codec->width = icodec->width;
2019                 codec->height = icodec->height;
2020                 codec->has_b_frames = icodec->has_b_frames;
2021                 if (!codec->sample_aspect_ratio.num) {
2022                     codec->sample_aspect_ratio =
2023                     ost->st->sample_aspect_ratio =
2024                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2025                         ist->st->codec->sample_aspect_ratio.num ?
2026                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2027                 }
2028                 break;
2029             case AVMEDIA_TYPE_SUBTITLE:
2030                 codec->width = icodec->width;
2031                 codec->height = icodec->height;
2032                 break;
2033             case AVMEDIA_TYPE_DATA:
2034                 break;
2035             default:
2036                 abort();
2037             }
2038         } else {
2039             if (!ost->enc)
2040                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2041             switch(codec->codec_type) {
2042             case AVMEDIA_TYPE_AUDIO:
2043                 ost->fifo= av_fifo_alloc(1024);
2044                 if (!ost->fifo) {
2045                     return AVERROR(ENOMEM);
2046                 }
2047                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2048                 if (!codec->sample_rate) {
2049                     codec->sample_rate = icodec->sample_rate;
2050                 }
2051                 choose_sample_rate(ost->st, ost->enc);
2052                 codec->time_base = (AVRational){1, codec->sample_rate};
2053                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2054                     codec->sample_fmt = icodec->sample_fmt;
2055                 choose_sample_fmt(ost->st, ost->enc);
2056                 if (!codec->channels) {
2057                     codec->channels = icodec->channels;
2058                     codec->channel_layout = icodec->channel_layout;
2059                 }
2060                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2061                     codec->channel_layout = 0;
2062                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2063                 icodec->request_channels = codec->channels;
2064                 ist->decoding_needed = 1;
2065                 ost->encoding_needed = 1;
2066                 ost->resample_sample_fmt  = icodec->sample_fmt;
2067                 ost->resample_sample_rate = icodec->sample_rate;
2068                 ost->resample_channels    = icodec->channels;
2069                 break;
2070             case AVMEDIA_TYPE_VIDEO:
2071                 if (codec->pix_fmt == PIX_FMT_NONE)
2072                     codec->pix_fmt = icodec->pix_fmt;
2073                 choose_pixel_fmt(ost->st, ost->enc);
2074
2075                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2076                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2077                     exit_program(1);
2078                 }
2079
2080                 if (!codec->width || !codec->height) {
2081                     codec->width  = icodec->width;
2082                     codec->height = icodec->height;
2083                 }
2084
2085                 ost->video_resample = codec->width   != icodec->width  ||
2086                                       codec->height  != icodec->height ||
2087                                       codec->pix_fmt != icodec->pix_fmt;
2088                 if (ost->video_resample) {
2089                     codec->bits_per_raw_sample= frame_bits_per_raw_sample;
2090                 }
2091
2092                 ost->resample_height = icodec->height;
2093                 ost->resample_width  = icodec->width;
2094                 ost->resample_pix_fmt= icodec->pix_fmt;
2095                 ost->encoding_needed = 1;
2096                 ist->decoding_needed = 1;
2097
2098                 if (!ost->frame_rate.num)
2099                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2100                 if (ost->enc && ost->enc->supported_framerates && !force_fps) {
2101                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2102                     ost->frame_rate = ost->enc->supported_framerates[idx];
2103                 }
2104                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2105                 if(   av_q2d(codec->time_base) < 0.001 && video_sync_method
2106                    && (video_sync_method==1 || (video_sync_method<0 && !(os->oformat->flags & AVFMT_VARIABLE_FPS)))){
2107                     av_log(os, AV_LOG_WARNING, "Frame rate very high for a muxer not effciciently supporting it.\n"
2108                                                "Please consider specifiying a lower framerate, a different muxer or -vsync 2\n");
2109                 }
2110
2111 #if CONFIG_AVFILTER
2112                 if (configure_video_filters(ist, ost)) {
2113                     fprintf(stderr, "Error opening filters!\n");
2114                     exit(1);
2115                 }
2116 #endif
2117                 break;
2118             case AVMEDIA_TYPE_SUBTITLE:
2119                 ost->encoding_needed = 1;
2120                 ist->decoding_needed = 1;
2121                 break;
2122             default:
2123                 abort();
2124                 break;
2125             }
2126             /* two pass mode */
2127             if (ost->encoding_needed && codec->codec_id != CODEC_ID_H264 &&
2128                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2129                 char logfilename[1024];
2130                 FILE *f;
2131
2132                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2133                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2134                          i);
2135                 if (codec->flags & CODEC_FLAG_PASS1) {
2136                     f = fopen(logfilename, "wb");
2137                     if (!f) {
2138                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2139                         exit_program(1);
2140                     }
2141                     ost->logfile = f;
2142                 } else {
2143                     char  *logbuffer;
2144                     size_t logbuffer_size;
2145                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2146                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2147                         exit_program(1);
2148                     }
2149                     codec->stats_in = logbuffer;
2150                 }
2151             }
2152         }
2153         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2154             /* maximum video buffer size is 6-bytes per pixel, plus DPX header size */
2155             int size= codec->width * codec->height;
2156             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 1664);
2157         }
2158     }
2159
2160     if (!bit_buffer)
2161         bit_buffer = av_malloc(bit_buffer_size);
2162     if (!bit_buffer) {
2163         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2164                 bit_buffer_size);
2165         return AVERROR(ENOMEM);
2166     }
2167
2168     /* open each encoder */
2169     for (i = 0; i < nb_output_streams; i++) {
2170         ost = &output_streams[i];
2171         if (ost->encoding_needed) {
2172             AVCodec *codec = ost->enc;
2173             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2174             if (!codec) {
2175                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2176                          ost->st->codec->codec_id, ost->file_index, ost->index);
2177                 ret = AVERROR(EINVAL);
2178                 goto dump_format;
2179             }
2180             if (dec->subtitle_header) {
2181                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2182                 if (!ost->st->codec->subtitle_header) {
2183                     ret = AVERROR(ENOMEM);
2184                     goto dump_format;
2185                 }
2186                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2187                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2188             }
2189             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2190                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2191                         ost->file_index, ost->index);
2192                 ret = AVERROR(EINVAL);
2193                 goto dump_format;
2194             }
2195             assert_codec_experimental(ost->st->codec, 1);
2196             assert_avoptions(ost->opts);
2197             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2198                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2199                                              "It takes bits/s as argument, not kbits/s\n");
2200             extra_size += ost->st->codec->extradata_size;
2201         }
2202     }
2203
2204     /* init input streams */
2205     for (i = 0; i < nb_input_streams; i++)
2206         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error)) < 0))
2207             goto dump_format;
2208
2209     /* open files and write file headers */
2210     for (i = 0; i < nb_output_files; i++) {
2211         os = output_files[i].ctx;
2212         if (avformat_write_header(os, &output_files[i].opts) < 0) {
2213             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2214             ret = AVERROR(EINVAL);
2215             goto dump_format;
2216         }
2217 //        assert_avoptions(output_files[i].opts);
2218         if (strcmp(os->oformat->name, "rtp")) {
2219             want_sdp = 0;
2220         }
2221     }
2222
2223  dump_format:
2224     /* dump the file output parameters - cannot be done before in case
2225        of stream copy */
2226     for(i=0;i<nb_output_files;i++) {
2227         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2228     }
2229
2230     /* dump the stream mapping */
2231     if (verbose >= 0) {
2232         fprintf(stderr, "Stream mapping:\n");
2233         for (i = 0; i < nb_output_streams;i ++) {
2234             ost = &output_streams[i];
2235             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2236                     input_streams[ost->source_index].file_index,
2237                     input_streams[ost->source_index].st->index,
2238                     ost->file_index,
2239                     ost->index);
2240             if (ost->sync_ist != &input_streams[ost->source_index])
2241                 fprintf(stderr, " [sync #%d.%d]",
2242                         ost->sync_ist->file_index,
2243                         ost->sync_ist->st->index);
2244             if (ost->st->stream_copy)
2245                 fprintf(stderr, " (copy)");
2246             else
2247                 fprintf(stderr, " (%s -> %s)", input_streams[ost->source_index].dec ?
2248                         input_streams[ost->source_index].dec->name : "?",
2249                         ost->enc ? ost->enc->name : "?");
2250             fprintf(stderr, "\n");
2251         }
2252     }
2253
2254     if (ret) {
2255         fprintf(stderr, "%s\n", error);
2256         return ret;
2257     }
2258
2259     if (want_sdp) {
2260         print_sdp(output_files, nb_output_files);
2261     }
2262
2263     return 0;
2264 }
2265
2266 /*
2267  * The following code is the main loop of the file converter
2268  */
2269 static int transcode(OutputFile *output_files,
2270                      int nb_output_files,
2271                      InputFile *input_files,
2272                      int nb_input_files)
2273 {
2274     int ret, i;
2275     AVFormatContext *is, *os;
2276     OutputStream *ost;
2277     InputStream *ist;
2278     uint8_t *no_packet;
2279     int no_packet_count=0;
2280     int64_t timer_start;
2281     int key;
2282
2283     if (!(no_packet = av_mallocz(nb_input_files)))
2284         exit_program(1);
2285
2286     ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2287     if (ret < 0)
2288         goto fail;
2289
2290     if (!using_stdin) {
2291         if(verbose >= 0)
2292             fprintf(stderr, "Press [q] to stop, [?] for help\n");
2293         avio_set_interrupt_cb(decode_interrupt_cb);
2294     }
2295     term_init();
2296
2297     timer_start = av_gettime();
2298
2299     for(; received_sigterm == 0;) {
2300         int file_index, ist_index;
2301         AVPacket pkt;
2302         int64_t ipts_min;
2303         double opts_min;
2304
2305         ipts_min = INT64_MAX;
2306         opts_min= 1e100;
2307         /* if 'q' pressed, exits */
2308         if (!using_stdin) {
2309             if (q_pressed)
2310                 break;
2311             /* read_key() returns 0 on EOF */
2312             key = read_key();
2313             if (key == 'q')
2314                 break;
2315             if (key == '+') verbose++;
2316             if (key == '-') verbose--;
2317             if (key == 's') qp_hist     ^= 1;
2318             if (key == 'h'){
2319                 if (do_hex_dump){
2320                     do_hex_dump = do_pkt_dump = 0;
2321                 } else if(do_pkt_dump){
2322                     do_hex_dump = 1;
2323                 } else
2324                     do_pkt_dump = 1;
2325                 av_log_set_level(AV_LOG_DEBUG);
2326             }
2327             if (key == 'd' || key == 'D'){
2328                 int debug=0;
2329                 if(key == 'D') {
2330                     debug = input_streams[0].st->codec->debug<<1;
2331                     if(!debug) debug = 1;
2332                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2333                         debug += debug;
2334                 }else
2335                     scanf("%d", &debug);
2336                 for(i=0;i<nb_input_streams;i++) {
2337                     input_streams[i].st->codec->debug = debug;
2338                 }
2339                 for(i=0;i<nb_output_streams;i++) {
2340                     ost = &output_streams[i];
2341                     ost->st->codec->debug = debug;
2342                 }
2343                 if(debug) av_log_set_level(AV_LOG_DEBUG);
2344                 fprintf(stderr,"debug=%d\n", debug);
2345             }
2346             if (key == '?'){
2347                 fprintf(stderr, "key    function\n"
2348                                 "?      show this help\n"
2349                                 "+      increase verbosity\n"
2350                                 "-      decrease verbosity\n"
2351                                 "D      cycle through available debug modes\n"
2352                                 "h      dump packets/hex press to cycle through the 3 states\n"
2353                                 "q      quit\n"
2354                                 "s      Show QP histogram\n"
2355                 );
2356             }
2357         }
2358
2359         /* select the stream that we must read now by looking at the
2360            smallest output pts */
2361         file_index = -1;
2362         for (i = 0; i < nb_output_streams; i++) {
2363             OutputFile *of;
2364             int64_t ipts;
2365             double  opts;
2366             ost = &output_streams[i];
2367             of = &output_files[ost->file_index];
2368             os = output_files[ost->file_index].ctx;
2369             ist = &input_streams[ost->source_index];
2370             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2371                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2372                 continue;
2373             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2374             ipts = ist->pts;
2375             if (!input_files[ist->file_index].eof_reached){
2376                 if(ipts < ipts_min) {
2377                     ipts_min = ipts;
2378                     if(input_sync ) file_index = ist->file_index;
2379                 }
2380                 if(opts < opts_min) {
2381                     opts_min = opts;
2382                     if(!input_sync) file_index = ist->file_index;
2383                 }
2384             }
2385             if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
2386                 file_index= -1;
2387                 break;
2388             }
2389         }
2390         /* if none, if is finished */
2391         if (file_index < 0) {
2392             if(no_packet_count){
2393                 no_packet_count=0;
2394                 memset(no_packet, 0, nb_input_files);
2395                 usleep(10000);
2396                 continue;
2397             }
2398             break;
2399         }
2400
2401         /* read a frame from it and output it in the fifo */
2402         is = input_files[file_index].ctx;
2403         ret= av_read_frame(is, &pkt);
2404         if(ret == AVERROR(EAGAIN)){
2405             no_packet[file_index]=1;
2406             no_packet_count++;
2407             continue;
2408         }
2409         if (ret < 0) {
2410             input_files[file_index].eof_reached = 1;
2411             if (opt_shortest)
2412                 break;
2413             else
2414                 continue;
2415         }
2416
2417         no_packet_count=0;
2418         memset(no_packet, 0, nb_input_files);
2419
2420         if (do_pkt_dump) {
2421             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2422                              is->streams[pkt.stream_index]);
2423         }
2424         /* the following test is needed in case new streams appear
2425            dynamically in stream : we ignore them */
2426         if (pkt.stream_index >= input_files[file_index].nb_streams)
2427             goto discard_packet;
2428         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2429         ist = &input_streams[ist_index];
2430         if (ist->discard)
2431             goto discard_packet;
2432
2433         if (pkt.dts != AV_NOPTS_VALUE)
2434             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2435         if (pkt.pts != AV_NOPTS_VALUE)
2436             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2437
2438         if (ist->ts_scale) {
2439             if(pkt.pts != AV_NOPTS_VALUE)
2440                 pkt.pts *= ist->ts_scale;
2441             if(pkt.dts != AV_NOPTS_VALUE)
2442                 pkt.dts *= ist->ts_scale;
2443         }
2444
2445 //        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);
2446         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2447             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2448             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2449             int64_t delta= pkt_dts - ist->next_pts;
2450             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2451                 input_files[ist->file_index].ts_offset -= delta;
2452                 if (verbose > 2)
2453                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2454                             delta, input_files[ist->file_index].ts_offset);
2455                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2456                 if(pkt.pts != AV_NOPTS_VALUE)
2457                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2458             }
2459         }
2460
2461         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2462         if (output_packet(ist, ist_index, output_streams, nb_output_streams, &pkt) < 0) {
2463
2464             if (verbose >= 0)
2465                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2466                         ist->file_index, ist->st->index);
2467             if (exit_on_error)
2468                 exit_program(1);
2469             av_free_packet(&pkt);
2470             continue;
2471         }
2472
2473     discard_packet:
2474         av_free_packet(&pkt);
2475
2476         /* dump report by using the output first video and audio streams */
2477         print_report(output_files, output_streams, nb_output_streams, 0, timer_start);
2478     }
2479
2480     /* at the end of stream, we must flush the decoder buffers */
2481     for (i = 0; i < nb_input_streams; i++) {
2482         ist = &input_streams[i];
2483         if (ist->decoding_needed) {
2484             output_packet(ist, i, output_streams, nb_output_streams, NULL);
2485         }
2486     }
2487     flush_encoders(output_streams, nb_output_streams);
2488
2489     term_exit();
2490
2491     /* write the trailer if needed and close file */
2492     for(i=0;i<nb_output_files;i++) {
2493         os = output_files[i].ctx;
2494         av_write_trailer(os);
2495     }
2496
2497     /* dump report by using the first video and audio streams */
2498     print_report(output_files, output_streams, nb_output_streams, 1, timer_start);
2499
2500     /* close each encoder */
2501     for (i = 0; i < nb_output_streams; i++) {
2502         ost = &output_streams[i];
2503         if (ost->encoding_needed) {
2504             av_freep(&ost->st->codec->stats_in);
2505             avcodec_close(ost->st->codec);
2506         }
2507 #if CONFIG_AVFILTER
2508         avfilter_graph_free(&ost->graph);
2509 #endif
2510     }
2511
2512     /* close each decoder */
2513     for (i = 0; i < nb_input_streams; i++) {
2514         ist = &input_streams[i];
2515         if (ist->decoding_needed) {
2516             avcodec_close(ist->st->codec);
2517         }
2518     }
2519
2520     /* finished ! */
2521     ret = 0;
2522
2523  fail:
2524     av_freep(&bit_buffer);
2525     av_freep(&no_packet);
2526
2527     if (output_streams) {
2528         for (i = 0; i < nb_output_streams; i++) {
2529             ost = &output_streams[i];
2530             if (ost) {
2531                 if (ost->st->stream_copy)
2532                     av_freep(&ost->st->codec->extradata);
2533                 if (ost->logfile) {
2534                     fclose(ost->logfile);
2535                     ost->logfile = NULL;
2536                 }
2537                 av_fifo_free(ost->fifo); /* works even if fifo is not
2538                                              initialized but set to zero */
2539                 av_freep(&ost->st->codec->subtitle_header);
2540                 av_free(ost->resample_frame.data[0]);
2541                 av_free(ost->forced_kf_pts);
2542                 if (ost->video_resample)
2543                     sws_freeContext(ost->img_resample_ctx);
2544                 if (ost->resample)
2545                     audio_resample_close(ost->resample);
2546                 if (ost->reformat_ctx)
2547                     av_audio_convert_free(ost->reformat_ctx);
2548                 av_dict_free(&ost->opts);
2549             }
2550         }
2551     }
2552     return ret;
2553 }
2554
2555 static int opt_format(const char *opt, const char *arg)
2556 {
2557     last_asked_format = arg;
2558     return 0;
2559 }
2560
2561 static int opt_video_rc_override_string(const char *opt, const char *arg)
2562 {
2563     video_rc_override_string = arg;
2564     return 0;
2565 }
2566
2567 static int opt_me_threshold(const char *opt, const char *arg)
2568 {
2569     me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2570     return 0;
2571 }
2572
2573 static int opt_verbose(const char *opt, const char *arg)
2574 {
2575     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2576     return 0;
2577 }
2578
2579 static int opt_frame_rate(const char *opt, const char *arg)
2580 {
2581     if (av_parse_video_rate(&frame_rate, arg) < 0) {
2582         fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2583         exit_program(1);
2584     }
2585     return 0;
2586 }
2587
2588 static int opt_frame_size(const char *opt, const char *arg)
2589 {
2590     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2591         fprintf(stderr, "Incorrect frame size\n");
2592         return AVERROR(EINVAL);
2593     }
2594     return 0;
2595 }
2596
2597 static int opt_frame_pix_fmt(const char *opt, const char *arg)
2598 {
2599     if (strcmp(arg, "list")) {
2600         frame_pix_fmt = av_get_pix_fmt(arg);
2601         if (frame_pix_fmt == PIX_FMT_NONE) {
2602             fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2603             return AVERROR(EINVAL);
2604         }
2605     } else {
2606         opt_pix_fmts(NULL, NULL);
2607         exit_program(0);
2608     }
2609     return 0;
2610 }
2611
2612 static int opt_frame_aspect_ratio(const char *opt, const char *arg)
2613 {
2614     int x = 0, y = 0;
2615     double ar = 0;
2616     const char *p;
2617     char *end;
2618
2619     p = strchr(arg, ':');
2620     if (p) {
2621         x = strtol(arg, &end, 10);
2622         if (end == p)
2623             y = strtol(end+1, &end, 10);
2624         if (x > 0 && y > 0)
2625             ar = (double)x / (double)y;
2626     } else
2627         ar = strtod(arg, NULL);
2628
2629     if (!ar) {
2630         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2631         return AVERROR(EINVAL);
2632     }
2633     frame_aspect_ratio = ar;
2634     return 0;
2635 }
2636
2637 static int opt_metadata(const char *opt, const char *arg)
2638 {
2639     char *mid= strchr(arg, '=');
2640
2641     if(!mid){
2642         fprintf(stderr, "Missing =\n");
2643         exit_program(1);
2644     }
2645     *mid++= 0;
2646
2647     av_dict_set(&metadata, arg, mid, 0);
2648
2649     return 0;
2650 }
2651
2652 static int opt_qscale(const char *opt, const char *arg)
2653 {
2654     video_qscale = parse_number_or_die(opt, arg, OPT_FLOAT, 0, 255);
2655     if (video_qscale <= 0 || video_qscale > 255) {
2656         fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2657         return AVERROR(EINVAL);
2658     }
2659     return 0;
2660 }
2661
2662 static int opt_top_field_first(const char *opt, const char *arg)
2663 {
2664     top_field_first = parse_number_or_die(opt, arg, OPT_INT, 0, 1);
2665     return opt_default(opt, arg);
2666 }
2667
2668 static int opt_audio_sample_fmt(const char *opt, const char *arg)
2669 {
2670     if (strcmp(arg, "list")) {
2671         audio_sample_fmt = av_get_sample_fmt(arg);
2672         if (audio_sample_fmt == AV_SAMPLE_FMT_NONE) {
2673             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg);
2674             return AVERROR(EINVAL);
2675         }
2676     } else {
2677         int i;
2678         char fmt_str[128];
2679         for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
2680             printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
2681         exit_program(0);
2682     }
2683     return 0;
2684 }
2685
2686 static int opt_audio_rate(const char *opt, const char *arg)
2687 {
2688     audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2689     return 0;
2690 }
2691
2692 static int opt_audio_channels(const char *opt, const char *arg)
2693 {
2694     audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2695     return 0;
2696 }
2697
2698 static int opt_codec(const char *opt, const char *arg)
2699 {
2700     return av_dict_set(&codec_names, opt, arg, 0);
2701 }
2702
2703 static int opt_audio_codec(const char *opt, const char *arg)
2704 {
2705     return opt_codec("codec:a", arg);
2706 }
2707
2708 static int opt_video_codec(const char *opt, const char *arg)
2709 {
2710     return opt_codec("codec:v", arg);
2711 }
2712
2713 static int opt_subtitle_codec(const char *opt, const char *arg)
2714 {
2715     return opt_codec("codec:s", arg);
2716 }
2717
2718 static int opt_data_codec(const char *opt, const char *arg)
2719 {
2720     return opt_codec("codec:d", arg);
2721 }
2722
2723 static int opt_codec_tag(const char *opt, const char *arg)
2724 {
2725     char *tail;
2726     uint32_t *codec_tag;
2727
2728     codec_tag = !strcmp(opt, "atag") ? &audio_codec_tag :
2729                 !strcmp(opt, "vtag") ? &video_codec_tag :
2730                 !strcmp(opt, "stag") ? &subtitle_codec_tag : NULL;
2731     if (!codec_tag)
2732         return -1;
2733
2734     *codec_tag = strtol(arg, &tail, 0);
2735     if (!tail || *tail)
2736         *codec_tag = AV_RL32(arg);
2737
2738     return 0;
2739 }
2740
2741 static int opt_map(const char *opt, const char *arg)
2742 {
2743     StreamMap *m = NULL;
2744     int i, negative = 0, file_idx;
2745     int sync_file_idx = -1, sync_stream_idx;
2746     char *p, *sync;
2747     char *map;
2748
2749     if (*arg == '-') {
2750         negative = 1;
2751         arg++;
2752     }
2753     map = av_strdup(arg);
2754
2755     /* parse sync stream first, just pick first matching stream */
2756     if (sync = strchr(map, ',')) {
2757         *sync = 0;
2758         sync_file_idx = strtol(sync + 1, &sync, 0);
2759         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2760             av_log(NULL, AV_LOG_ERROR, "Invalid sync file index: %d.\n", sync_file_idx);
2761             exit_program(1);
2762         }
2763         if (*sync)
2764             sync++;
2765         for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2766             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2767                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2768                 sync_stream_idx = i;
2769                 break;
2770             }
2771         if (i == input_files[sync_file_idx].nb_streams) {
2772             av_log(NULL, AV_LOG_ERROR, "Sync stream specification in map %s does not "
2773                                        "match any streams.\n", arg);
2774             exit_program(1);
2775         }
2776     }
2777
2778
2779     file_idx = strtol(map, &p, 0);
2780     if (file_idx >= nb_input_files || file_idx < 0) {
2781         av_log(NULL, AV_LOG_ERROR, "Invalid input file index: %d.\n", file_idx);
2782         exit_program(1);
2783     }
2784     if (negative)
2785         /* disable some already defined maps */
2786         for (i = 0; i < nb_stream_maps; i++) {
2787             m = &stream_maps[i];
2788             if (check_stream_specifier(input_files[m->file_index].ctx,
2789                                        input_files[m->file_index].ctx->streams[m->stream_index],
2790                                        *p == ':' ? p + 1 : p) > 0)
2791                 m->disabled = 1;
2792         }
2793     else
2794         for (i = 0; i < input_files[file_idx].nb_streams; i++) {
2795             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2796                         *p == ':' ? p + 1 : p) <= 0)
2797                 continue;
2798             stream_maps = grow_array(stream_maps, sizeof(*stream_maps), &nb_stream_maps, nb_stream_maps + 1);
2799             m = &stream_maps[nb_stream_maps - 1];
2800
2801             m->file_index   = file_idx;
2802             m->stream_index = i;
2803
2804             if (sync_file_idx >= 0) {
2805                 m->sync_file_index   = sync_file_idx;
2806                 m->sync_stream_index = sync_stream_idx;
2807             } else {
2808                 m->sync_file_index   = file_idx;
2809                 m->sync_stream_index = i;
2810             }
2811         }
2812
2813     if (!m) {
2814         av_log(NULL, AV_LOG_ERROR, "Stream map '%s' matches no streams.\n", arg);
2815         exit_program(1);
2816     }
2817
2818     av_freep(&map);
2819     return 0;
2820 }
2821
2822 static void parse_meta_type(char *arg, char *type, int *index)
2823 {
2824     if (*arg == ':') {
2825         *type = *(++arg);
2826         switch (*arg) {
2827         case 'g':
2828             break;
2829         case 's':
2830         case 'c':
2831         case 'p':
2832             if (*(++arg) == ':')
2833                 *index = strtol(++arg, NULL, 0);
2834             break;
2835         default:
2836             fprintf(stderr, "Invalid metadata type %c.\n", *arg);
2837             exit_program(1);
2838         }
2839     } else
2840         *type = 'g';
2841 }
2842
2843 static int opt_map_metadata(const char *opt, const char *arg)
2844 {
2845     MetadataMap *m, *m1;
2846     char *p;
2847
2848     meta_data_maps = grow_array(meta_data_maps, sizeof(*meta_data_maps),
2849                                 &nb_meta_data_maps, nb_meta_data_maps + 1);
2850
2851     m = &meta_data_maps[nb_meta_data_maps - 1][1];
2852     m->file = strtol(arg, &p, 0);
2853     parse_meta_type(p, &m->type, &m->index);
2854
2855     m1 = &meta_data_maps[nb_meta_data_maps - 1][0];
2856     if (p = strchr(opt, ':'))
2857         parse_meta_type(p, &m1->type, &m1->index);
2858     else
2859         m1->type = 'g';
2860
2861     if (m->type == 'g' || m1->type == 'g')
2862         metadata_global_autocopy = 0;
2863     if (m->type == 's' || m1->type == 's')
2864         metadata_streams_autocopy = 0;
2865     if (m->type == 'c' || m1->type == 'c')
2866         metadata_chapters_autocopy = 0;
2867
2868     return 0;
2869 }
2870
2871 static int opt_input_ts_scale(const char *opt, const char *arg)
2872 {
2873     return av_dict_set(&ts_scale, opt, arg, 0);
2874 }
2875
2876 static int opt_recording_time(const char *opt, const char *arg)
2877 {
2878     recording_time = parse_time_or_die(opt, arg, 1);
2879     return 0;
2880 }
2881
2882 static int opt_start_time(const char *opt, const char *arg)
2883 {
2884     start_time = parse_time_or_die(opt, arg, 1);
2885     return 0;
2886 }
2887
2888 static int opt_input_ts_offset(const char *opt, const char *arg)
2889 {
2890     input_ts_offset = parse_time_or_die(opt, arg, 1);
2891     return 0;
2892 }
2893
2894 static enum CodecID find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
2895 {
2896     const char *codec_string = encoder ? "encoder" : "decoder";
2897     AVCodec *codec;
2898
2899     if(!name)
2900         return CODEC_ID_NONE;
2901     codec = encoder ?
2902         avcodec_find_encoder_by_name(name) :
2903         avcodec_find_decoder_by_name(name);
2904     if(!codec) {
2905         av_log(NULL, AV_LOG_ERROR, "Unknown %s '%s'\n", codec_string, name);
2906         exit_program(1);
2907     }
2908     if(codec->type != type) {
2909         av_log(NULL, AV_LOG_ERROR, "Invalid %s type '%s'\n", codec_string, name);
2910         exit_program(1);
2911     }
2912     return codec->id;
2913 }
2914
2915 static AVCodec *choose_codec(AVFormatContext *s, AVStream *st, enum AVMediaType type, AVDictionary *codec_names)
2916 {
2917     AVDictionaryEntry *e = NULL;
2918     char *codec_name = NULL;
2919     int ret;
2920
2921     while (e = av_dict_get(codec_names, "", e, AV_DICT_IGNORE_SUFFIX)) {
2922         char *p = strchr(e->key, ':');
2923
2924         if ((ret = check_stream_specifier(s, st, p ? p + 1 : "")) > 0)
2925             codec_name = e->value;
2926         else if (ret < 0)
2927             exit_program(1);
2928     }
2929
2930     if (!codec_name) {
2931         if (s->oformat) {
2932             st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename, NULL, type);
2933             return avcodec_find_encoder(st->codec->codec_id);
2934         }
2935     } else if (!strcmp(codec_name, "copy"))
2936         st->stream_copy = 1;
2937     else {
2938         st->codec->codec_id = find_codec_or_die(codec_name, type, s->iformat == NULL);
2939         return s->oformat ? avcodec_find_encoder_by_name(codec_name) :
2940                             avcodec_find_decoder_by_name(codec_name);
2941     }
2942
2943     return NULL;
2944 }
2945
2946 /**
2947  * Add all the streams from the given input file to the global
2948  * list of input streams.
2949  */
2950 static void add_input_streams(AVFormatContext *ic)
2951 {
2952     int i, rfps, rfps_base, ret;
2953
2954     for (i = 0; i < ic->nb_streams; i++) {
2955         AVStream *st = ic->streams[i];
2956         AVCodecContext *dec = st->codec;
2957         AVDictionaryEntry *e = NULL;
2958         InputStream *ist;
2959         char *scale = NULL;
2960
2961         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
2962         ist = &input_streams[nb_input_streams - 1];
2963         ist->st = st;
2964         ist->file_index = nb_input_files;
2965         ist->discard = 1;
2966         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
2967
2968         while (e = av_dict_get(ts_scale, "", e, AV_DICT_IGNORE_SUFFIX)) {
2969             char *p = strchr(e->key, ':');
2970
2971             if ((ret = check_stream_specifier(ic, st, p ? p + 1 : "")) > 0)
2972                 scale = e->value;
2973             else if (ret < 0)
2974                 exit_program(1);
2975         }
2976         if (scale)
2977             ist->ts_scale = strtod(scale, NULL);
2978
2979         ist->dec = choose_codec(ic, st, dec->codec_type, codec_names);
2980         if (!ist->dec)
2981             ist->dec = avcodec_find_decoder(dec->codec_id);
2982
2983         switch (dec->codec_type) {
2984         case AVMEDIA_TYPE_AUDIO:
2985             if(!ist->dec)
2986                 ist->dec = avcodec_find_decoder(dec->codec_id);
2987             if(audio_disable)
2988                 st->discard= AVDISCARD_ALL;
2989             break;
2990         case AVMEDIA_TYPE_VIDEO:
2991             if(!ist->dec)
2992                 ist->dec = avcodec_find_decoder(dec->codec_id);
2993             rfps      = ic->streams[i]->r_frame_rate.num;
2994             rfps_base = ic->streams[i]->r_frame_rate.den;
2995             if (dec->lowres) {
2996                 dec->flags |= CODEC_FLAG_EMU_EDGE;
2997             }
2998             if(me_threshold)
2999                 dec->debug |= FF_DEBUG_MV;
3000
3001             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3002
3003                 if (verbose >= 0)
3004                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3005                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3006
3007                     (float)rfps / rfps_base, rfps, rfps_base);
3008             }
3009
3010             if(video_disable)
3011                 st->discard= AVDISCARD_ALL;
3012             else if(video_discard)
3013                 st->discard= video_discard;
3014             break;
3015         case AVMEDIA_TYPE_DATA:
3016             break;
3017         case AVMEDIA_TYPE_SUBTITLE:
3018             if(!ist->dec)
3019                 ist->dec = avcodec_find_decoder(dec->codec_id);
3020             if(subtitle_disable)
3021                 st->discard = AVDISCARD_ALL;
3022             break;
3023         case AVMEDIA_TYPE_ATTACHMENT:
3024         case AVMEDIA_TYPE_UNKNOWN:
3025             break;
3026         default:
3027             abort();
3028         }
3029     }
3030 }
3031
3032 static int opt_input_file(const char *opt, const char *filename)
3033 {
3034     AVFormatContext *ic;
3035     AVInputFormat *file_iformat = NULL;
3036     int err, i, ret;
3037     int64_t timestamp;
3038     uint8_t buf[128];
3039     AVDictionary **opts;
3040     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
3041
3042     if (last_asked_format) {
3043         if (!(file_iformat = av_find_input_format(last_asked_format))) {
3044             fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
3045             exit_program(1);
3046         }
3047         last_asked_format = NULL;
3048     }
3049
3050     if (!strcmp(filename, "-"))
3051         filename = "pipe:";
3052
3053     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3054                     !strcmp(filename, "/dev/stdin");
3055
3056     /* get default parameters from command line */
3057     ic = avformat_alloc_context();
3058     if (!ic) {
3059         print_error(filename, AVERROR(ENOMEM));
3060         exit_program(1);
3061     }
3062     if (audio_sample_rate) {
3063         snprintf(buf, sizeof(buf), "%d", audio_sample_rate);
3064         av_dict_set(&format_opts, "sample_rate", buf, 0);
3065     }
3066     if (audio_channels) {
3067         snprintf(buf, sizeof(buf), "%d", audio_channels);
3068         av_dict_set(&format_opts, "channels", buf, 0);
3069     }
3070     if (frame_rate.num) {
3071         snprintf(buf, sizeof(buf), "%d/%d", frame_rate.num, frame_rate.den);
3072         av_dict_set(&format_opts, "framerate", buf, 0);
3073     }
3074     if (frame_width && frame_height) {
3075         snprintf(buf, sizeof(buf), "%dx%d", frame_width, frame_height);
3076         av_dict_set(&format_opts, "video_size", buf, 0);
3077     }
3078     if (frame_pix_fmt != PIX_FMT_NONE)
3079         av_dict_set(&format_opts, "pixel_format", av_get_pix_fmt_name(frame_pix_fmt), 0);
3080
3081     ic->flags |= AVFMT_FLAG_NONBLOCK;
3082
3083     /* open the input file with generic libav function */
3084     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3085     if (err < 0) {
3086         print_error(filename, err);
3087         exit_program(1);
3088     }
3089     assert_avoptions(format_opts);
3090
3091     if(opt_programid) {
3092         int i, j;
3093         int found=0;
3094         for(i=0; i<ic->nb_streams; i++){
3095             ic->streams[i]->discard= AVDISCARD_ALL;
3096         }
3097         for(i=0; i<ic->nb_programs; i++){
3098             AVProgram *p= ic->programs[i];
3099             if(p->id != opt_programid){
3100                 p->discard = AVDISCARD_ALL;
3101             }else{
3102                 found=1;
3103                 for(j=0; j<p->nb_stream_indexes; j++){
3104                     ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
3105                 }
3106             }
3107         }
3108         if(!found){
3109             fprintf(stderr, "Specified program id not found\n");
3110             exit_program(1);
3111         }
3112         opt_programid=0;
3113     }
3114
3115     /* apply forced codec ids */
3116     for (i = 0; i < ic->nb_streams; i++)
3117         choose_codec(ic, ic->streams[i], ic->streams[i]->codec->codec_type, codec_names);
3118
3119     /* Set AVCodecContext options for avformat_find_stream_info */
3120     opts = setup_find_stream_info_opts(ic, codec_opts);
3121     orig_nb_streams = ic->nb_streams;
3122
3123     /* If not enough info to get the stream parameters, we decode the
3124        first frames to get it. (used in mpeg case for example) */
3125     ret = avformat_find_stream_info(ic, opts);
3126     if (ret < 0 && verbose >= 0) {
3127         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3128         av_close_input_file(ic);
3129         exit_program(1);
3130     }
3131
3132     timestamp = start_time;
3133     /* add the stream start time */
3134     if (ic->start_time != AV_NOPTS_VALUE)
3135         timestamp += ic->start_time;
3136
3137     /* if seeking requested, we execute it */
3138     if (start_time != 0) {
3139         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3140         if (ret < 0) {
3141             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3142                     filename, (double)timestamp / AV_TIME_BASE);
3143         }
3144         /* reset seek info */
3145         start_time = 0;
3146     }
3147
3148     /* update the current parameters so that they match the one of the input stream */
3149     add_input_streams(ic);
3150
3151     /* dump the file content */
3152     if (verbose >= 0)
3153         av_dump_format(ic, nb_input_files, filename, 0);
3154
3155     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3156     input_files[nb_input_files - 1].ctx        = ic;
3157     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3158     input_files[nb_input_files - 1].ts_offset  = input_ts_offset - (copy_ts ? 0 : timestamp);
3159     input_files[nb_input_files - 1].nb_streams = ic->nb_streams;
3160
3161     top_field_first = -1;
3162     frame_rate    = (AVRational){0, 0};
3163     frame_pix_fmt = PIX_FMT_NONE;
3164     frame_height = 0;
3165     frame_width  = 0;
3166     audio_sample_rate = 0;
3167     audio_channels    = 0;
3168     audio_sample_fmt  = AV_SAMPLE_FMT_NONE;
3169     av_dict_free(&ts_scale);
3170     input_ts_offset = 0;
3171
3172     for (i = 0; i < orig_nb_streams; i++)
3173         av_dict_free(&opts[i]);
3174     av_freep(&opts);
3175     av_dict_free(&codec_names);
3176     uninit_opts();
3177     init_opts();
3178     return 0;
3179 }
3180
3181 static void parse_forced_key_frames(char *kf, OutputStream *ost,
3182                                     AVCodecContext *avctx)
3183 {
3184     char *p;
3185     int n = 1, i;
3186     int64_t t;
3187
3188     for (p = kf; *p; p++)
3189         if (*p == ',')
3190             n++;
3191     ost->forced_kf_count = n;
3192     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
3193     if (!ost->forced_kf_pts) {
3194         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
3195         exit_program(1);
3196     }
3197     for (i = 0; i < n; i++) {
3198         p = i ? strchr(p, ',') + 1 : kf;
3199         t = parse_time_or_die("force_key_frames", p, 1);
3200         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
3201     }
3202 }
3203
3204 static OutputStream *new_output_stream(AVFormatContext *oc, enum AVMediaType type)
3205 {
3206     OutputStream *ost;
3207     AVStream *st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3208     int idx      = oc->nb_streams - 1;
3209
3210     if (!st) {
3211         av_log(NULL, AV_LOG_ERROR, "Could not alloc stream.\n");
3212         exit_program(1);
3213     }
3214
3215     output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
3216                                 nb_output_streams + 1);
3217     ost = &output_streams[nb_output_streams - 1];
3218     ost->file_index = nb_output_files;
3219     ost->index = idx;
3220     ost->st    = st;
3221     st->codec->codec_type = type;
3222     ost->enc = choose_codec(oc, st, type, codec_names);
3223     if (ost->enc) {
3224         ost->opts  = filter_codec_opts(codec_opts, ost->enc->id, oc, st);
3225     }
3226
3227     avcodec_get_context_defaults3(st->codec, ost->enc);
3228     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
3229
3230     ost->sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
3231     return ost;
3232 }
3233
3234 static OutputStream *new_video_stream(AVFormatContext *oc)
3235 {
3236     AVStream *st;
3237     OutputStream *ost;
3238     AVCodecContext *video_enc;
3239
3240     ost = new_output_stream(oc, AVMEDIA_TYPE_VIDEO);
3241     st  = ost->st;
3242     if (!st->stream_copy) {
3243         ost->frame_aspect_ratio = frame_aspect_ratio;
3244         frame_aspect_ratio = 0;
3245 #if CONFIG_AVFILTER
3246         ost->avfilter = vfilters;
3247         vfilters = NULL;
3248 #endif
3249     }
3250
3251     ost->bitstream_filters = video_bitstream_filters;
3252     video_bitstream_filters= NULL;
3253
3254     video_enc = st->codec;
3255
3256     if(video_codec_tag)
3257         video_enc->codec_tag= video_codec_tag;
3258
3259     if(oc->oformat->flags & AVFMT_GLOBALHEADER) {
3260         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3261     }
3262
3263     if (st->stream_copy) {
3264         video_enc->sample_aspect_ratio =
3265         st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3266     } else {
3267         const char *p;
3268         int i;
3269
3270         if (frame_rate.num)
3271             ost->frame_rate = frame_rate;
3272
3273         video_enc->width = frame_width;
3274         video_enc->height = frame_height;
3275         video_enc->pix_fmt = frame_pix_fmt;
3276         video_enc->bits_per_raw_sample = frame_bits_per_raw_sample;
3277         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3278
3279         if (video_qscale || same_quant) {
3280             video_enc->flags |= CODEC_FLAG_QSCALE;
3281             video_enc->global_quality = FF_QP2LAMBDA * video_qscale;
3282         }
3283
3284         if(intra_matrix)
3285             video_enc->intra_matrix = intra_matrix;
3286         if(inter_matrix)
3287             video_enc->inter_matrix = inter_matrix;
3288
3289         p= video_rc_override_string;
3290         for(i=0; p; i++){
3291             int start, end, q;
3292             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3293             if(e!=3){
3294                 fprintf(stderr, "error parsing rc_override\n");
3295                 exit_program(1);
3296             }
3297             video_enc->rc_override=
3298                 av_realloc(video_enc->rc_override,
3299                            sizeof(RcOverride)*(i+1));
3300             video_enc->rc_override[i].start_frame= start;
3301             video_enc->rc_override[i].end_frame  = end;
3302             if(q>0){
3303                 video_enc->rc_override[i].qscale= q;
3304                 video_enc->rc_override[i].quality_factor= 1.0;
3305             }
3306             else{
3307                 video_enc->rc_override[i].qscale= 0;
3308                 video_enc->rc_override[i].quality_factor= -q/100.0;
3309             }
3310             p= strchr(p, '/');
3311             if(p) p++;
3312         }
3313         video_enc->rc_override_count=i;
3314         if (!video_enc->rc_initial_buffer_occupancy)
3315             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3316         video_enc->me_threshold= me_threshold;
3317         video_enc->intra_dc_precision= intra_dc_precision - 8;
3318
3319         if (do_psnr)
3320             video_enc->flags|= CODEC_FLAG_PSNR;
3321
3322         /* two pass mode */
3323         if (do_pass) {
3324             if (do_pass == 1) {
3325                 video_enc->flags |= CODEC_FLAG_PASS1;
3326             } else {
3327                 video_enc->flags |= CODEC_FLAG_PASS2;
3328             }
3329         }
3330
3331         if (forced_key_frames)
3332             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3333     }
3334     if (video_language) {
3335         av_dict_set(&st->metadata, "language", video_language, 0);
3336         av_freep(&video_language);
3337     }
3338
3339     /* reset some key parameters */
3340     video_disable = 0;
3341     av_freep(&forced_key_frames);
3342     frame_pix_fmt = PIX_FMT_NONE;
3343     return ost;
3344 }
3345
3346 static OutputStream *new_audio_stream(AVFormatContext *oc)
3347 {
3348     AVStream *st;
3349     OutputStream *ost;
3350     AVCodecContext *audio_enc;
3351
3352     ost = new_output_stream(oc, AVMEDIA_TYPE_AUDIO);
3353     st  = ost->st;
3354
3355     ost->bitstream_filters = audio_bitstream_filters;
3356     audio_bitstream_filters= NULL;
3357
3358     audio_enc = st->codec;
3359     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3360
3361     if(audio_codec_tag)
3362         audio_enc->codec_tag= audio_codec_tag;
3363
3364     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3365         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3366     }
3367     if (!st->stream_copy) {
3368         if (audio_qscale > QSCALE_NONE) {
3369             audio_enc->flags |= CODEC_FLAG_QSCALE;
3370             audio_enc->global_quality = FF_QP2LAMBDA * audio_qscale;
3371         }
3372         if (audio_channels)
3373             audio_enc->channels = audio_channels;
3374         if (audio_sample_fmt != AV_SAMPLE_FMT_NONE)
3375             audio_enc->sample_fmt = audio_sample_fmt;
3376         if (audio_sample_rate)
3377             audio_enc->sample_rate = audio_sample_rate;
3378     }
3379     if (audio_language) {
3380         av_dict_set(&st->metadata, "language", audio_language, 0);
3381         av_freep(&audio_language);
3382     }
3383
3384     /* reset some key parameters */
3385     audio_disable = 0;
3386
3387     return ost;
3388 }
3389
3390 static OutputStream *new_data_stream(AVFormatContext *oc)
3391 {
3392     AVStream *st;
3393     OutputStream *ost;
3394     AVCodecContext *data_enc;
3395
3396     ost = new_output_stream(oc, AVMEDIA_TYPE_DATA);
3397     st  = ost->st;
3398     data_enc = st->codec;
3399     if (!st->stream_copy) {
3400         fprintf(stderr, "Data stream encoding not supported yet (only streamcopy)\n");
3401         exit_program(1);
3402     }
3403
3404     if (data_codec_tag)
3405         data_enc->codec_tag= data_codec_tag;
3406
3407     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3408         data_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3409     }
3410
3411     data_disable = 0;
3412     return ost;
3413 }
3414
3415 static OutputStream *new_subtitle_stream(AVFormatContext *oc)
3416 {
3417     AVStream *st;
3418     OutputStream *ost;
3419     AVCodecContext *subtitle_enc;
3420
3421     ost = new_output_stream(oc, AVMEDIA_TYPE_SUBTITLE);
3422     st  = ost->st;
3423     subtitle_enc = st->codec;
3424
3425     ost->bitstream_filters = subtitle_bitstream_filters;
3426     subtitle_bitstream_filters= NULL;
3427
3428     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3429
3430     if(subtitle_codec_tag)
3431         subtitle_enc->codec_tag= subtitle_codec_tag;
3432
3433     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3434         subtitle_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3435     }
3436
3437     if (subtitle_language) {
3438         av_dict_set(&st->metadata, "language", subtitle_language, 0);
3439         av_freep(&subtitle_language);
3440     }
3441
3442     subtitle_disable = 0;
3443     return ost;
3444 }
3445
3446 /* arg format is "output-stream-index:streamid-value". */
3447 static int opt_streamid(const char *opt, const char *arg)
3448 {
3449     int idx;
3450     char *p;
3451     char idx_str[16];
3452
3453     av_strlcpy(idx_str, arg, sizeof(idx_str));
3454     p = strchr(idx_str, ':');
3455     if (!p) {
3456         fprintf(stderr,
3457                 "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3458                 arg, opt);
3459         exit_program(1);
3460     }
3461     *p++ = '\0';
3462     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, MAX_STREAMS-1);
3463     streamid_map = grow_array(streamid_map, sizeof(*streamid_map), &nb_streamid_map, idx+1);
3464     streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3465     return 0;
3466 }
3467
3468 static int copy_chapters(int infile, int outfile)
3469 {
3470     AVFormatContext *is = input_files[infile].ctx;
3471     AVFormatContext *os = output_files[outfile].ctx;
3472     int i;
3473
3474     for (i = 0; i < is->nb_chapters; i++) {
3475         AVChapter *in_ch = is->chapters[i], *out_ch;
3476         int64_t ts_off   = av_rescale_q(start_time - input_files[infile].ts_offset,
3477                                       AV_TIME_BASE_Q, in_ch->time_base);
3478         int64_t rt       = (recording_time == INT64_MAX) ? INT64_MAX :
3479                            av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
3480
3481
3482         if (in_ch->end < ts_off)
3483             continue;
3484         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
3485             break;
3486
3487         out_ch = av_mallocz(sizeof(AVChapter));
3488         if (!out_ch)
3489             return AVERROR(ENOMEM);
3490
3491         out_ch->id        = in_ch->id;
3492         out_ch->time_base = in_ch->time_base;
3493         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
3494         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
3495
3496         if (metadata_chapters_autocopy)
3497             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
3498
3499         os->nb_chapters++;
3500         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
3501         if (!os->chapters)
3502             return AVERROR(ENOMEM);
3503         os->chapters[os->nb_chapters - 1] = out_ch;
3504     }
3505     return 0;
3506 }
3507
3508 static int read_ffserver_streams(AVFormatContext *s, const char *filename)
3509 {
3510     int i, err;
3511     AVFormatContext *ic = NULL;
3512
3513     err = avformat_open_input(&ic, filename, NULL, NULL);
3514     if (err < 0)
3515         return err;
3516     /* copy stream format */
3517     for(i=0;i<ic->nb_streams;i++) {
3518         AVStream *st;
3519         OutputStream *ost;
3520         AVCodec *codec;
3521
3522         codec = avcodec_find_encoder(ic->streams[i]->codec->codec_id);
3523         ost   = new_output_stream(s, codec->type);
3524         st    = ost->st;
3525
3526         // FIXME: a more elegant solution is needed
3527         memcpy(st, ic->streams[i], sizeof(AVStream));
3528         st->info = av_malloc(sizeof(*st->info));
3529         memcpy(st->info, ic->streams[i]->info, sizeof(*st->info));
3530         avcodec_copy_context(st->codec, ic->streams[i]->codec);
3531
3532         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && !st->stream_copy)
3533             choose_sample_fmt(st, codec);
3534         else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && !st->stream_copy)
3535             choose_pixel_fmt(st, codec);
3536     }
3537
3538     av_close_input_file(ic);
3539     return 0;
3540 }
3541
3542 static int opt_output_file(const char *opt, const char *filename)
3543 {
3544     AVFormatContext *oc;
3545     int i, err;
3546     AVOutputFormat *file_oformat;
3547     OutputStream *ost;
3548     InputStream  *ist;
3549
3550     if (!strcmp(filename, "-"))
3551         filename = "pipe:";
3552
3553     err = avformat_alloc_output_context2(&oc, NULL, last_asked_format, filename);
3554     last_asked_format = NULL;
3555     if (!oc) {
3556         print_error(filename, err);
3557         exit_program(1);
3558     }
3559
3560     file_oformat= oc->oformat;
3561
3562     if (!strcmp(file_oformat->name, "ffm") &&
3563         av_strstart(filename, "http:", NULL)) {
3564         /* special case for files sent to ffserver: we get the stream
3565            parameters from ffserver */
3566         int err = read_ffserver_streams(oc, filename);
3567         if (err < 0) {
3568             print_error(filename, err);
3569             exit_program(1);
3570         }
3571     } else if (!nb_stream_maps) {
3572         /* pick the "best" stream of each type */
3573 #define NEW_STREAM(type, index)\
3574         if (index >= 0) {\
3575             ost = new_ ## type ## _stream(oc);\
3576             ost->source_index = index;\
3577             ost->sync_ist     = &input_streams[index];\
3578             input_streams[index].discard = 0;\
3579         }
3580
3581         /* video: highest resolution */
3582         if (!video_disable && oc->oformat->video_codec != CODEC_ID_NONE) {
3583             int area = 0, idx = -1;
3584             for (i = 0; i < nb_input_streams; i++) {
3585                 ist = &input_streams[i];
3586                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3587                     ist->st->codec->width * ist->st->codec->height > area) {
3588                     area = ist->st->codec->width * ist->st->codec->height;
3589                     idx = i;
3590                 }
3591             }
3592             NEW_STREAM(video, idx);
3593         }
3594
3595         /* audio: most channels */
3596         if (!audio_disable && oc->oformat->audio_codec != CODEC_ID_NONE) {
3597             int channels = 0, idx = -1;
3598             for (i = 0; i < nb_input_streams; i++) {
3599                 ist = &input_streams[i];
3600                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
3601                     ist->st->codec->channels > channels) {
3602                     channels = ist->st->codec->channels;
3603                     idx = i;
3604                 }
3605             }
3606             NEW_STREAM(audio, idx);
3607         }
3608
3609         /* subtitles: pick first */
3610         if (!subtitle_disable && oc->oformat->subtitle_codec != CODEC_ID_NONE) {
3611             for (i = 0; i < nb_input_streams; i++)
3612                 if (input_streams[i].st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3613                     NEW_STREAM(subtitle, i);
3614                     break;
3615                 }
3616         }
3617         /* do something with data? */
3618     } else {
3619         for (i = 0; i < nb_stream_maps; i++) {
3620             StreamMap *map = &stream_maps[i];
3621
3622             if (map->disabled)
3623                 continue;
3624
3625             ist = &input_streams[input_files[map->file_index].ist_index + map->stream_index];
3626             switch (ist->st->codec->codec_type) {
3627             case AVMEDIA_TYPE_VIDEO:    ost = new_video_stream(oc);    break;
3628             case AVMEDIA_TYPE_AUDIO:    ost = new_audio_stream(oc);    break;
3629             case AVMEDIA_TYPE_SUBTITLE: ost = new_subtitle_stream(oc); break;
3630             case AVMEDIA_TYPE_DATA:     ost = new_data_stream(oc);     break;
3631             default:
3632                 av_log(NULL, AV_LOG_ERROR, "Cannot map stream #%d.%d - unsupported type.\n",
3633                        map->file_index, map->stream_index);
3634                 exit_program(1);
3635             }
3636
3637             ost->source_index = input_files[map->file_index].ist_index + map->stream_index;
3638             ost->sync_ist = &input_streams[input_files[map->sync_file_index].ist_index +
3639                                            map->sync_stream_index];
3640             ist->discard = 0;
3641         }
3642     }
3643
3644     av_dict_copy(&oc->metadata, metadata, 0);
3645     av_dict_free(&metadata);
3646
3647
3648     output_files = grow_array(output_files, sizeof(*output_files), &nb_output_files, nb_output_files + 1);
3649     output_files[nb_output_files - 1].ctx       = oc;
3650     output_files[nb_output_files - 1].ost_index = nb_output_streams - oc->nb_streams;
3651     output_files[nb_output_files - 1].recording_time = recording_time;
3652     output_files[nb_output_files - 1].start_time     = start_time;
3653     output_files[nb_output_files - 1].limit_filesize = limit_filesize;
3654     av_dict_copy(&output_files[nb_output_files - 1].opts, format_opts, 0);
3655
3656     /* check filename in case of an image number is expected */
3657     if (oc->oformat->flags & AVFMT_NEEDNUMBER) {
3658         if (!av_filename_number_test(oc->filename)) {
3659             print_error(oc->filename, AVERROR(EINVAL));
3660             exit_program(1);
3661         }
3662     }
3663
3664     if (!(oc->oformat->flags & AVFMT_NOFILE)) {
3665         /* test if it already exists to avoid loosing precious files */
3666         if (!file_overwrite &&
3667             (strchr(filename, ':') == NULL ||
3668              filename[1] == ':' ||
3669              av_strstart(filename, "file:", NULL))) {
3670             if (avio_check(filename, 0) == 0) {
3671                 if (!using_stdin) {
3672                     fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3673      &nbs