ffplay: remove unnecessary if (cur_stream) checks
[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 thread_count= 1;
209 static int q_pressed = 0;
210 static int64_t video_size = 0;
211 static int64_t audio_size = 0;
212 static int64_t extra_size = 0;
213 static int nb_frames_dup = 0;
214 static int nb_frames_drop = 0;
215 static int input_sync;
216 static uint64_t limit_filesize = UINT64_MAX;
217 static int force_fps = 0;
218 static char *forced_key_frames = NULL;
219
220 static float dts_delta_threshold = 10;
221
222 static uint8_t *audio_buf;
223 static uint8_t *audio_out;
224 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
225
226 static short *samples;
227
228 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
229 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
230 static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL;
231
232 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
233
234 typedef struct InputStream {
235     int file_index;
236     AVStream *st;
237     int discard;             /* true if stream data should be discarded */
238     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
239     AVCodec *dec;
240
241     int64_t       start;     /* time when read started */
242     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
243                                 is not defined */
244     int64_t       pts;       /* current pts */
245     double ts_scale;
246     int is_start;            /* is 1 at the start and after a discontinuity */
247     int showed_multi_packet_warning;
248     AVDictionary *opts;
249 } InputStream;
250
251 typedef struct InputFile {
252     AVFormatContext *ctx;
253     int eof_reached;      /* true if eof reached */
254     int ist_index;        /* index of first stream in ist_table */
255     int buffer_size;      /* current total buffer size */
256     int nb_streams;
257     int64_t ts_offset;
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     *out_picture = in_picture;
1078
1079     resample_changed = ost->resample_width   != dec->width  ||
1080                        ost->resample_height  != dec->height ||
1081                        ost->resample_pix_fmt != dec->pix_fmt;
1082
1083 #if !CONFIG_AVFILTER
1084     if (resample_changed) {
1085         av_log(NULL, AV_LOG_INFO,
1086                "Input stream #%d.%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1087                ist->file_index, ist->st->index,
1088                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1089                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1090         ost->resample_width   = dec->width;
1091         ost->resample_height  = dec->height;
1092         ost->resample_pix_fmt = dec->pix_fmt;
1093     }
1094
1095     ost->video_resample = dec->width   != enc->width  ||
1096                           dec->height  != enc->height ||
1097                           dec->pix_fmt != enc->pix_fmt;
1098
1099     if (ost->video_resample) {
1100         *out_picture = &ost->resample_frame;
1101         if (!ost->img_resample_ctx || resample_changed) {
1102             /* initialize the destination picture */
1103             if (!ost->resample_frame.data[0]) {
1104                 avcodec_get_frame_defaults(&ost->resample_frame);
1105                 if (avpicture_alloc((AVPicture *)&ost->resample_frame, enc->pix_fmt,
1106                                     enc->width, enc->height)) {
1107                     fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
1108                     exit_program(1);
1109                 }
1110             }
1111             /* initialize a new scaler context */
1112             sws_freeContext(ost->img_resample_ctx);
1113             ost->img_resample_ctx = sws_getContext(dec->width, dec->height, dec->pix_fmt,
1114                                                    enc->width, enc->height, enc->pix_fmt,
1115                                                    ost->sws_flags, NULL, NULL, NULL);
1116             if (ost->img_resample_ctx == NULL) {
1117                 fprintf(stderr, "Cannot get resampling context\n");
1118                 exit_program(1);
1119             }
1120         }
1121         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1122               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1123     }
1124 #else
1125     if (resample_changed) {
1126         avfilter_graph_free(&ost->graph);
1127         if (configure_video_filters(ist, ost)) {
1128             fprintf(stderr, "Error reinitializing filters!\n");
1129             exit_program(1);
1130         }
1131     }
1132 #endif
1133     if (resample_changed) {
1134         ost->resample_width   = dec->width;
1135         ost->resample_height  = dec->height;
1136         ost->resample_pix_fmt = dec->pix_fmt;
1137     }
1138 }
1139
1140
1141 static void do_video_out(AVFormatContext *s,
1142                          OutputStream *ost,
1143                          InputStream *ist,
1144                          AVFrame *in_picture,
1145                          int *frame_size, float quality)
1146 {
1147     int nb_frames, i, ret, format_video_sync;
1148     AVFrame *final_picture;
1149     AVCodecContext *enc, *dec;
1150     double sync_ipts;
1151
1152     enc = ost->st->codec;
1153     dec = ist->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             AVFrame* old_frame = enc->coded_frame;
1208             enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
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             enc->coded_frame = old_frame;
1216         } else {
1217             AVFrame big_picture;
1218
1219             big_picture= *final_picture;
1220             /* better than nothing: use input picture interlaced
1221                settings */
1222             big_picture.interlaced_frame = in_picture->interlaced_frame;
1223             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1224                 if(top_field_first == -1)
1225                     big_picture.top_field_first = in_picture->top_field_first;
1226                 else
1227                     big_picture.top_field_first = top_field_first;
1228             }
1229
1230             /* handles same_quant here. This is not correct because it may
1231                not be a global option */
1232             big_picture.quality = quality;
1233             if(!me_threshold)
1234                 big_picture.pict_type = 0;
1235 //            big_picture.pts = AV_NOPTS_VALUE;
1236             big_picture.pts= ost->sync_opts;
1237 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1238 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1239             if (ost->forced_kf_index < ost->forced_kf_count &&
1240                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1241                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1242                 ost->forced_kf_index++;
1243             }
1244             ret = avcodec_encode_video(enc,
1245                                        bit_buffer, bit_buffer_size,
1246                                        &big_picture);
1247             if (ret < 0) {
1248                 fprintf(stderr, "Video encoding failed\n");
1249                 exit_program(1);
1250             }
1251
1252             if(ret>0){
1253                 pkt.data= bit_buffer;
1254                 pkt.size= ret;
1255                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1256                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1257 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1258    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1259    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1260
1261                 if(enc->coded_frame->key_frame)
1262                     pkt.flags |= AV_PKT_FLAG_KEY;
1263                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1264                 *frame_size = ret;
1265                 video_size += ret;
1266                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1267                 //        enc->frame_number-1, ret, enc->pict_type);
1268                 /* if two pass, output log */
1269                 if (ost->logfile && enc->stats_out) {
1270                     fprintf(ost->logfile, "%s", enc->stats_out);
1271                 }
1272             }
1273         }
1274         ost->sync_opts++;
1275         ost->frame_number++;
1276     }
1277 }
1278
1279 static double psnr(double d){
1280     return -10.0*log(d)/log(10.0);
1281 }
1282
1283 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1284                            int frame_size)
1285 {
1286     AVCodecContext *enc;
1287     int frame_number;
1288     double ti1, bitrate, avg_bitrate;
1289
1290     /* this is executed just the first time do_video_stats is called */
1291     if (!vstats_file) {
1292         vstats_file = fopen(vstats_filename, "w");
1293         if (!vstats_file) {
1294             perror("fopen");
1295             exit_program(1);
1296         }
1297     }
1298
1299     enc = ost->st->codec;
1300     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1301         frame_number = ost->frame_number;
1302         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1303         if (enc->flags&CODEC_FLAG_PSNR)
1304             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1305
1306         fprintf(vstats_file,"f_size= %6d ", frame_size);
1307         /* compute pts value */
1308         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1309         if (ti1 < 0.01)
1310             ti1 = 0.01;
1311
1312         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1313         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1314         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1315             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1316         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1317     }
1318 }
1319
1320 static void print_report(OutputFile *output_files,
1321                          OutputStream *ost_table, int nb_ostreams,
1322                          int is_last_report, int64_t timer_start)
1323 {
1324     char buf[1024];
1325     OutputStream *ost;
1326     AVFormatContext *oc;
1327     int64_t total_size;
1328     AVCodecContext *enc;
1329     int frame_number, vid, i;
1330     double bitrate;
1331     int64_t pts = INT64_MAX;
1332     static int64_t last_time = -1;
1333     static int qp_histogram[52];
1334
1335     if (!is_last_report) {
1336         int64_t cur_time;
1337         /* display the report every 0.5 seconds */
1338         cur_time = av_gettime();
1339         if (last_time == -1) {
1340             last_time = cur_time;
1341             return;
1342         }
1343         if ((cur_time - last_time) < 500000)
1344             return;
1345         last_time = cur_time;
1346     }
1347
1348
1349     oc = output_files[0].ctx;
1350
1351     total_size = avio_size(oc->pb);
1352     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1353         total_size= avio_tell(oc->pb);
1354
1355     buf[0] = '\0';
1356     vid = 0;
1357     for(i=0;i<nb_ostreams;i++) {
1358         float q = -1;
1359         ost = &ost_table[i];
1360         enc = ost->st->codec;
1361         if (!ost->st->stream_copy && enc->coded_frame)
1362             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1363         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1364             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1365         }
1366         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1367             float t = (av_gettime()-timer_start) / 1000000.0;
1368
1369             frame_number = ost->frame_number;
1370             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1371                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1372             if(is_last_report)
1373                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1374             if(qp_hist){
1375                 int j;
1376                 int qp = lrintf(q);
1377                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1378                     qp_histogram[qp]++;
1379                 for(j=0; j<32; j++)
1380                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1381             }
1382             if (enc->flags&CODEC_FLAG_PSNR){
1383                 int j;
1384                 double error, error_sum=0;
1385                 double scale, scale_sum=0;
1386                 char type[3]= {'Y','U','V'};
1387                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1388                 for(j=0; j<3; j++){
1389                     if(is_last_report){
1390                         error= enc->error[j];
1391                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1392                     }else{
1393                         error= enc->coded_frame->error[j];
1394                         scale= enc->width*enc->height*255.0*255.0;
1395                     }
1396                     if(j) scale/=4;
1397                     error_sum += error;
1398                     scale_sum += scale;
1399                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1400                 }
1401                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1402             }
1403             vid = 1;
1404         }
1405         /* compute min output value */
1406         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
1407                                       ost->st->time_base, AV_TIME_BASE_Q));
1408     }
1409
1410     if (verbose > 0 || is_last_report) {
1411         int hours, mins, secs, us;
1412         secs = pts / AV_TIME_BASE;
1413         us = pts % AV_TIME_BASE;
1414         mins = secs / 60;
1415         secs %= 60;
1416         hours = mins / 60;
1417         mins %= 60;
1418
1419         bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1420
1421         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1422                  "size=%8.0fkB time=", total_size / 1024.0);
1423         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1424                  "%02d:%02d:%02d.%02d ", hours, mins, secs,
1425                  (100 * us) / AV_TIME_BASE);
1426         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1427                  "bitrate=%6.1fkbits/s", bitrate);
1428
1429         if (nb_frames_dup || nb_frames_drop)
1430           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1431                   nb_frames_dup, nb_frames_drop);
1432
1433         if (verbose >= 0)
1434             fprintf(stderr, "%s    \r", buf);
1435
1436         fflush(stderr);
1437     }
1438
1439     if (is_last_report && verbose >= 0){
1440         int64_t raw= audio_size + video_size + extra_size;
1441         fprintf(stderr, "\n");
1442         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1443                 video_size/1024.0,
1444                 audio_size/1024.0,
1445                 extra_size/1024.0,
1446                 100.0*(total_size - raw)/raw
1447         );
1448     }
1449 }
1450
1451 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1452 {
1453     int fill_char = 0x00;
1454     if (sample_fmt == AV_SAMPLE_FMT_U8)
1455         fill_char = 0x80;
1456     memset(buf, fill_char, size);
1457 }
1458
1459 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1460 {
1461     int i, ret;
1462
1463     for (i = 0; i < nb_ostreams; i++) {
1464         OutputStream   *ost = &ost_table[i];
1465         AVCodecContext *enc = ost->st->codec;
1466         AVFormatContext *os = output_files[ost->file_index].ctx;
1467
1468         if (!ost->encoding_needed)
1469             continue;
1470
1471         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1472             continue;
1473         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1474             continue;
1475
1476         for(;;) {
1477             AVPacket pkt;
1478             int fifo_bytes;
1479             av_init_packet(&pkt);
1480             pkt.stream_index= ost->index;
1481
1482             switch (ost->st->codec->codec_type) {
1483             case AVMEDIA_TYPE_AUDIO:
1484                 fifo_bytes = av_fifo_size(ost->fifo);
1485                 ret = 0;
1486                 /* encode any samples remaining in fifo */
1487                 if (fifo_bytes > 0) {
1488                     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1489                     int fs_tmp = enc->frame_size;
1490
1491                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1492                     if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1493                         enc->frame_size = fifo_bytes / (osize * enc->channels);
1494                     } else { /* pad */
1495                         int frame_bytes = enc->frame_size*osize*enc->channels;
1496                         if (allocated_audio_buf_size < frame_bytes)
1497                             exit_program(1);
1498                         generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1499                     }
1500
1501                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1502                     pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1503                                               ost->st->time_base.num, enc->sample_rate);
1504                     enc->frame_size = fs_tmp;
1505                 }
1506                 if (ret <= 0) {
1507                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1508                 }
1509                 if (ret < 0) {
1510                     fprintf(stderr, "Audio encoding failed\n");
1511                     exit_program(1);
1512                 }
1513                 audio_size += ret;
1514                 pkt.flags |= AV_PKT_FLAG_KEY;
1515                 break;
1516             case AVMEDIA_TYPE_VIDEO:
1517                 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1518                 if (ret < 0) {
1519                     fprintf(stderr, "Video encoding failed\n");
1520                     exit_program(1);
1521                 }
1522                 video_size += ret;
1523                 if(enc->coded_frame && enc->coded_frame->key_frame)
1524                     pkt.flags |= AV_PKT_FLAG_KEY;
1525                 if (ost->logfile && enc->stats_out) {
1526                     fprintf(ost->logfile, "%s", enc->stats_out);
1527                 }
1528                 break;
1529             default:
1530                 ret=-1;
1531             }
1532
1533             if (ret <= 0)
1534                 break;
1535             pkt.data = bit_buffer;
1536             pkt.size = ret;
1537             if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1538                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1539             write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1540         }
1541     }
1542 }
1543
1544 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1545 static int output_packet(InputStream *ist, int ist_index,
1546                          OutputStream *ost_table, int nb_ostreams,
1547                          const AVPacket *pkt)
1548 {
1549     AVFormatContext *os;
1550     OutputStream *ost;
1551     int ret, i;
1552     int got_output;
1553     AVFrame picture;
1554     void *buffer_to_free = NULL;
1555     static unsigned int samples_size= 0;
1556     AVSubtitle subtitle, *subtitle_to_free;
1557     int64_t pkt_pts = AV_NOPTS_VALUE;
1558 #if CONFIG_AVFILTER
1559     int frame_available;
1560 #endif
1561     float quality;
1562
1563     AVPacket avpkt;
1564     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1565
1566     if(ist->next_pts == AV_NOPTS_VALUE)
1567         ist->next_pts= ist->pts;
1568
1569     if (pkt == NULL) {
1570         /* EOF handling */
1571         av_init_packet(&avpkt);
1572         avpkt.data = NULL;
1573         avpkt.size = 0;
1574         goto handle_eof;
1575     } else {
1576         avpkt = *pkt;
1577     }
1578
1579     if(pkt->dts != AV_NOPTS_VALUE)
1580         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1581     if(pkt->pts != AV_NOPTS_VALUE)
1582         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1583
1584     //while we have more to decode or while the decoder did output something on EOF
1585     while (avpkt.size > 0 || (!pkt && got_output)) {
1586         uint8_t *data_buf, *decoded_data_buf;
1587         int data_size, decoded_data_size;
1588     handle_eof:
1589         ist->pts= ist->next_pts;
1590
1591         if(avpkt.size && avpkt.size != pkt->size &&
1592            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1593             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1594             ist->showed_multi_packet_warning=1;
1595         }
1596
1597         /* decode the packet if needed */
1598         decoded_data_buf = NULL; /* fail safe */
1599         decoded_data_size= 0;
1600         data_buf  = avpkt.data;
1601         data_size = avpkt.size;
1602         subtitle_to_free = NULL;
1603         if (ist->decoding_needed) {
1604             switch(ist->st->codec->codec_type) {
1605             case AVMEDIA_TYPE_AUDIO:{
1606                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1607                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1608                     av_free(samples);
1609                     samples= av_malloc(samples_size);
1610                 }
1611                 decoded_data_size= samples_size;
1612                     /* XXX: could avoid copy if PCM 16 bits with same
1613                        endianness as CPU */
1614                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1615                                             &avpkt);
1616                 if (ret < 0)
1617                     return ret;
1618                 avpkt.data += ret;
1619                 avpkt.size -= ret;
1620                 data_size   = ret;
1621                 got_output  = decoded_data_size > 0;
1622                 /* Some bug in mpeg audio decoder gives */
1623                 /* decoded_data_size < 0, it seems they are overflows */
1624                 if (!got_output) {
1625                     /* no audio frame */
1626                     continue;
1627                 }
1628                 decoded_data_buf = (uint8_t *)samples;
1629                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1630                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1631                 break;}
1632             case AVMEDIA_TYPE_VIDEO:
1633                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1634                     /* XXX: allocate picture correctly */
1635                     avcodec_get_frame_defaults(&picture);
1636                     avpkt.pts = pkt_pts;
1637                     avpkt.dts = ist->pts;
1638                     pkt_pts = AV_NOPTS_VALUE;
1639
1640                     ret = avcodec_decode_video2(ist->st->codec,
1641                                                 &picture, &got_output, &avpkt);
1642                     quality = same_quant ? picture.quality : 0;
1643                     if (ret < 0)
1644                         return ret;
1645                     if (!got_output) {
1646                         /* no picture yet */
1647                         goto discard_packet;
1648                     }
1649                     ist->next_pts = ist->pts = picture.best_effort_timestamp;
1650                     if (ist->st->codec->time_base.num != 0) {
1651                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1652                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1653                                           ist->st->codec->time_base.num * ticks) /
1654                             ist->st->codec->time_base.den;
1655                     }
1656                     avpkt.size = 0;
1657                     buffer_to_free = NULL;
1658                     pre_process_video_frame(ist, (AVPicture *)&picture, &buffer_to_free);
1659                     break;
1660             case AVMEDIA_TYPE_SUBTITLE:
1661                 ret = avcodec_decode_subtitle2(ist->st->codec,
1662                                                &subtitle, &got_output, &avpkt);
1663                 if (ret < 0)
1664                     return ret;
1665                 if (!got_output) {
1666                     goto discard_packet;
1667                 }
1668                 subtitle_to_free = &subtitle;
1669                 avpkt.size = 0;
1670                 break;
1671             default:
1672                 return -1;
1673             }
1674         } else {
1675             switch(ist->st->codec->codec_type) {
1676             case AVMEDIA_TYPE_AUDIO:
1677                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1678                     ist->st->codec->sample_rate;
1679                 break;
1680             case AVMEDIA_TYPE_VIDEO:
1681                 if (ist->st->codec->time_base.num != 0) {
1682                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1683                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1684                                       ist->st->codec->time_base.num * ticks) /
1685                         ist->st->codec->time_base.den;
1686                 }
1687                 break;
1688             }
1689             ret = avpkt.size;
1690             avpkt.size = 0;
1691         }
1692
1693         // preprocess audio (volume)
1694         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1695             if (audio_volume != 256) {
1696                 short *volp;
1697                 volp = samples;
1698                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1699                     int v = ((*volp) * audio_volume + 128) >> 8;
1700                     if (v < -32768) v = -32768;
1701                     if (v >  32767) v = 32767;
1702                     *volp++ = v;
1703                 }
1704             }
1705         }
1706
1707         /* frame rate emulation */
1708         if (rate_emu) {
1709             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1710             int64_t now = av_gettime() - ist->start;
1711             if (pts > now)
1712                 usleep(pts - now);
1713         }
1714         /* if output time reached then transcode raw format,
1715            encode packets and output them */
1716         for (i = 0; i < nb_ostreams; i++) {
1717             OutputFile *of = &output_files[ost_table[i].file_index];
1718             int frame_size;
1719
1720             ost = &ost_table[i];
1721             if (ost->source_index != ist_index)
1722                 continue;
1723
1724             if (of->start_time && ist->pts < of->start_time)
1725                 continue;
1726
1727             if (of->recording_time != INT64_MAX &&
1728                 av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1729                               (AVRational){1, 1000000}) >= 0) {
1730                 ost->is_past_recording_time = 1;
1731                 continue;
1732             }
1733
1734 #if CONFIG_AVFILTER
1735             if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1736                 ost->input_video_filter) {
1737                 if (!picture.sample_aspect_ratio.num)
1738                     picture.sample_aspect_ratio = ist->st->sample_aspect_ratio;
1739                 picture.pts = ist->pts;
1740
1741                 av_vsrc_buffer_add_frame(ost->input_video_filter, &picture, AV_VSRC_BUF_FLAG_OVERWRITE);
1742             }
1743             frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1744                 !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1745             while (frame_available) {
1746                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter) {
1747                     AVRational ist_pts_tb = ost->output_video_filter->inputs[0]->time_base;
1748                     if (av_vsink_buffer_get_video_buffer_ref(ost->output_video_filter, &ost->picref, 0) < 0)
1749                         goto cont;
1750                     if (ost->picref) {
1751                         avfilter_fill_frame_from_video_buffer_ref(&picture, ost->picref);
1752                         ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1753                     }
1754                 }
1755 #endif
1756                 os = output_files[ost->file_index].ctx;
1757
1758                 /* set the input output pts pairs */
1759                 //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
1760
1761                 if (ost->encoding_needed) {
1762                     av_assert0(ist->decoding_needed);
1763                     switch(ost->st->codec->codec_type) {
1764                     case AVMEDIA_TYPE_AUDIO:
1765                         do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1766                         break;
1767                     case AVMEDIA_TYPE_VIDEO:
1768 #if CONFIG_AVFILTER
1769                         if (ost->picref->video && !ost->frame_aspect_ratio)
1770                             ost->st->codec->sample_aspect_ratio = ost->picref->video->sample_aspect_ratio;
1771 #endif
1772                         do_video_out(os, ost, ist, &picture, &frame_size,
1773                                         same_quant ? quality : ost->st->codec->global_quality);
1774                         if (vstats_filename && frame_size)
1775                             do_video_stats(os, ost, frame_size);
1776                         break;
1777                     case AVMEDIA_TYPE_SUBTITLE:
1778                         do_subtitle_out(os, ost, ist, &subtitle,
1779                                         pkt->pts);
1780                         break;
1781                     default:
1782                         abort();
1783                     }
1784                 } else {
1785                     AVFrame avframe; //FIXME/XXX remove this
1786                     AVPicture pict;
1787                     AVPacket opkt;
1788                     int64_t ost_tb_start_time= av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1789                     av_init_packet(&opkt);
1790
1791                     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1792 #if !CONFIG_AVFILTER
1793                         continue;
1794 #else
1795                         goto cont;
1796 #endif
1797
1798                     /* no reencoding needed : output the packet directly */
1799                     /* force the input stream PTS */
1800
1801                     avcodec_get_frame_defaults(&avframe);
1802                     ost->st->codec->coded_frame= &avframe;
1803                     avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1804
1805                     if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1806                         audio_size += data_size;
1807                     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1808                         video_size += data_size;
1809                         ost->sync_opts++;
1810                     }
1811
1812                     opkt.stream_index= ost->index;
1813                     if(pkt->pts != AV_NOPTS_VALUE)
1814                         opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1815                     else
1816                         opkt.pts= AV_NOPTS_VALUE;
1817
1818                     if (pkt->dts == AV_NOPTS_VALUE)
1819                         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1820                     else
1821                         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1822                     opkt.dts -= ost_tb_start_time;
1823
1824                     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1825                     opkt.flags= pkt->flags;
1826
1827                     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1828                     if(   ost->st->codec->codec_id != CODEC_ID_H264
1829                        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1830                        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1831                        ) {
1832                         if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1833                             opkt.destruct= av_destruct_packet;
1834                     } else {
1835                         opkt.data = data_buf;
1836                         opkt.size = data_size;
1837                     }
1838
1839                     if (os->oformat->flags & AVFMT_RAWPICTURE) {
1840                         /* store AVPicture in AVPacket, as expected by the output format */
1841                         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1842                         opkt.data = (uint8_t *)&pict;
1843                         opkt.size = sizeof(AVPicture);
1844                         opkt.flags |= AV_PKT_FLAG_KEY;
1845                     }
1846                     write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1847                     ost->st->codec->frame_number++;
1848                     ost->frame_number++;
1849                     av_free_packet(&opkt);
1850                 }
1851 #if CONFIG_AVFILTER
1852                 cont:
1853                 frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1854                                    ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1855                 if (ost->picref)
1856                     avfilter_unref_buffer(ost->picref);
1857             }
1858 #endif
1859             }
1860
1861         av_free(buffer_to_free);
1862         /* XXX: allocate the subtitles in the codec ? */
1863         if (subtitle_to_free) {
1864             avsubtitle_free(subtitle_to_free);
1865             subtitle_to_free = NULL;
1866         }
1867     }
1868  discard_packet:
1869
1870     return 0;
1871 }
1872
1873 static void print_sdp(OutputFile *output_files, int n)
1874 {
1875     char sdp[2048];
1876     int i;
1877     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
1878
1879     if (!avc)
1880         exit_program(1);
1881     for (i = 0; i < n; i++)
1882         avc[i] = output_files[i].ctx;
1883
1884     av_sdp_create(avc, n, sdp, sizeof(sdp));
1885     printf("SDP:\n%s\n", sdp);
1886     fflush(stdout);
1887     av_freep(&avc);
1888 }
1889
1890 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
1891                              char *error, int error_len)
1892 {
1893     int i;
1894     InputStream *ist = &input_streams[ist_index];
1895     if (ist->decoding_needed) {
1896         AVCodec *codec = ist->dec;
1897         if (!codec)
1898             codec = avcodec_find_decoder(ist->st->codec->codec_id);
1899         if (!codec) {
1900             snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
1901                     ist->st->codec->codec_id, ist->file_index, ist->st->index);
1902             return AVERROR(EINVAL);
1903         }
1904
1905         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
1906             snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
1907                     ist->file_index, ist->st->index);
1908             return AVERROR(EINVAL);
1909         }
1910         assert_codec_experimental(ist->st->codec, 0);
1911         assert_avoptions(ist->opts);
1912     }
1913
1914     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;
1915     ist->next_pts = AV_NOPTS_VALUE;
1916     ist->is_start = 1;
1917
1918     return 0;
1919 }
1920
1921 static int transcode_init(OutputFile *output_files,
1922                           int nb_output_files,
1923                           InputFile *input_files,
1924                           int nb_input_files)
1925 {
1926     int ret = 0, i;
1927     AVFormatContext *os;
1928     AVCodecContext *codec, *icodec;
1929     OutputStream *ost;
1930     InputStream *ist;
1931     char error[1024];
1932     int want_sdp = 1;
1933
1934     if (rate_emu)
1935         for (i = 0; i < nb_input_streams; i++)
1936             input_streams[i].start = av_gettime();
1937
1938     /* output stream init */
1939     for(i=0;i<nb_output_files;i++) {
1940         os = output_files[i].ctx;
1941         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1942             av_dump_format(os, i, os->filename, 1);
1943             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
1944             return AVERROR(EINVAL);
1945         }
1946     }
1947
1948     /* for each output stream, we compute the right encoding parameters */
1949     for (i = 0; i < nb_output_streams; i++) {
1950         ost = &output_streams[i];
1951         os = output_files[ost->file_index].ctx;
1952         ist = &input_streams[ost->source_index];
1953
1954         codec = ost->st->codec;
1955         icodec = ist->st->codec;
1956
1957         ost->st->disposition = ist->st->disposition;
1958         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
1959         codec->chroma_sample_location = icodec->chroma_sample_location;
1960
1961         if (ost->st->stream_copy) {
1962             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
1963
1964             if (extra_size > INT_MAX) {
1965                 return AVERROR(EINVAL);
1966             }
1967
1968             /* if stream_copy is selected, no need to decode or encode */
1969             codec->codec_id = icodec->codec_id;
1970             codec->codec_type = icodec->codec_type;
1971
1972             if(!codec->codec_tag){
1973                 if(   !os->oformat->codec_tag
1974                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
1975                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
1976                     codec->codec_tag = icodec->codec_tag;
1977             }
1978
1979             codec->bit_rate = icodec->bit_rate;
1980             codec->rc_max_rate    = icodec->rc_max_rate;
1981             codec->rc_buffer_size = icodec->rc_buffer_size;
1982             codec->extradata= av_mallocz(extra_size);
1983             if (!codec->extradata) {
1984                 return AVERROR(ENOMEM);
1985             }
1986             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
1987             codec->extradata_size= icodec->extradata_size;
1988
1989             codec->time_base = ist->st->time_base;
1990             if(!strcmp(os->oformat->name, "avi")) {
1991                 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){
1992                     codec->time_base = icodec->time_base;
1993                     codec->time_base.num *= icodec->ticks_per_frame;
1994                     codec->time_base.den *= 2;
1995                 }
1996             } else if(!(os->oformat->flags & AVFMT_VARIABLE_FPS)) {
1997                 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){
1998                     codec->time_base = icodec->time_base;
1999                     codec->time_base.num *= icodec->ticks_per_frame;
2000                 }
2001             }
2002             av_reduce(&codec->time_base.num, &codec->time_base.den,
2003                         codec->time_base.num, codec->time_base.den, INT_MAX);
2004
2005             switch(codec->codec_type) {
2006             case AVMEDIA_TYPE_AUDIO:
2007                 if(audio_volume != 256) {
2008                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2009                     exit_program(1);
2010                 }
2011                 codec->channel_layout = icodec->channel_layout;
2012                 codec->sample_rate = icodec->sample_rate;
2013                 codec->channels = icodec->channels;
2014                 codec->frame_size = icodec->frame_size;
2015                 codec->audio_service_type = icodec->audio_service_type;
2016                 codec->block_align= icodec->block_align;
2017                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2018                     codec->block_align= 0;
2019                 if(codec->codec_id == CODEC_ID_AC3)
2020                     codec->block_align= 0;
2021                 break;
2022             case AVMEDIA_TYPE_VIDEO:
2023                 codec->pix_fmt = icodec->pix_fmt;
2024                 codec->width = icodec->width;
2025                 codec->height = icodec->height;
2026                 codec->has_b_frames = icodec->has_b_frames;
2027                 if (!codec->sample_aspect_ratio.num) {
2028                     codec->sample_aspect_ratio =
2029                     ost->st->sample_aspect_ratio =
2030                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2031                         ist->st->codec->sample_aspect_ratio.num ?
2032                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2033                 }
2034                 break;
2035             case AVMEDIA_TYPE_SUBTITLE:
2036                 codec->width = icodec->width;
2037                 codec->height = icodec->height;
2038                 break;
2039             case AVMEDIA_TYPE_DATA:
2040                 break;
2041             default:
2042                 abort();
2043             }
2044         } else {
2045             if (!ost->enc)
2046                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2047             switch(codec->codec_type) {
2048             case AVMEDIA_TYPE_AUDIO:
2049                 ost->fifo= av_fifo_alloc(1024);
2050                 if (!ost->fifo) {
2051                     return AVERROR(ENOMEM);
2052                 }
2053                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2054                 if (!codec->sample_rate) {
2055                     codec->sample_rate = icodec->sample_rate;
2056                 }
2057                 choose_sample_rate(ost->st, ost->enc);
2058                 codec->time_base = (AVRational){1, codec->sample_rate};
2059                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2060                     codec->sample_fmt = icodec->sample_fmt;
2061                 choose_sample_fmt(ost->st, ost->enc);
2062                 if (!codec->channels) {
2063                     codec->channels = icodec->channels;
2064                     codec->channel_layout = icodec->channel_layout;
2065                 }
2066                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2067                     codec->channel_layout = 0;
2068                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2069                 icodec->request_channels = codec->channels;
2070                 ist->decoding_needed = 1;
2071                 ost->encoding_needed = 1;
2072                 ost->resample_sample_fmt  = icodec->sample_fmt;
2073                 ost->resample_sample_rate = icodec->sample_rate;
2074                 ost->resample_channels    = icodec->channels;
2075                 break;
2076             case AVMEDIA_TYPE_VIDEO:
2077                 if (codec->pix_fmt == PIX_FMT_NONE)
2078                     codec->pix_fmt = icodec->pix_fmt;
2079                 choose_pixel_fmt(ost->st, ost->enc);
2080
2081                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2082                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2083                     exit_program(1);
2084                 }
2085
2086                 if (!codec->width || !codec->height) {
2087                     codec->width  = icodec->width;
2088                     codec->height = icodec->height;
2089                 }
2090
2091                 ost->video_resample = codec->width   != icodec->width  ||
2092                                       codec->height  != icodec->height ||
2093                                       codec->pix_fmt != icodec->pix_fmt;
2094                 if (ost->video_resample) {
2095                     codec->bits_per_raw_sample= frame_bits_per_raw_sample;
2096                 }
2097
2098                 ost->resample_height = icodec->height;
2099                 ost->resample_width  = icodec->width;
2100                 ost->resample_pix_fmt= icodec->pix_fmt;
2101                 ost->encoding_needed = 1;
2102                 ist->decoding_needed = 1;
2103
2104                 if (!ost->frame_rate.num)
2105                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2106                 if (ost->enc && ost->enc->supported_framerates && !force_fps) {
2107                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2108                     ost->frame_rate = ost->enc->supported_framerates[idx];
2109                 }
2110                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2111                 if(   av_q2d(codec->time_base) < 0.001 && video_sync_method
2112                    && (video_sync_method==1 || (video_sync_method<0 && !(os->oformat->flags & AVFMT_VARIABLE_FPS)))){
2113                     av_log(os, AV_LOG_WARNING, "Frame rate very high for a muxer not effciciently supporting it.\n"
2114                                                "Please consider specifiying a lower framerate, a different muxer or -vsync 2\n");
2115                 }
2116
2117 #if CONFIG_AVFILTER
2118                 if (configure_video_filters(ist, ost)) {
2119                     fprintf(stderr, "Error opening filters!\n");
2120                     exit(1);
2121                 }
2122 #endif
2123                 break;
2124             case AVMEDIA_TYPE_SUBTITLE:
2125                 ost->encoding_needed = 1;
2126                 ist->decoding_needed = 1;
2127                 break;
2128             default:
2129                 abort();
2130                 break;
2131             }
2132             /* two pass mode */
2133             if (ost->encoding_needed && codec->codec_id != CODEC_ID_H264 &&
2134                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2135                 char logfilename[1024];
2136                 FILE *f;
2137
2138                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2139                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2140                          i);
2141                 if (codec->flags & CODEC_FLAG_PASS1) {
2142                     f = fopen(logfilename, "wb");
2143                     if (!f) {
2144                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2145                         exit_program(1);
2146                     }
2147                     ost->logfile = f;
2148                 } else {
2149                     char  *logbuffer;
2150                     size_t logbuffer_size;
2151                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2152                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2153                         exit_program(1);
2154                     }
2155                     codec->stats_in = logbuffer;
2156                 }
2157             }
2158         }
2159         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2160             /* maximum video buffer size is 6-bytes per pixel, plus DPX header size */
2161             int size= codec->width * codec->height;
2162             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 1664);
2163         }
2164     }
2165
2166     if (!bit_buffer)
2167         bit_buffer = av_malloc(bit_buffer_size);
2168     if (!bit_buffer) {
2169         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2170                 bit_buffer_size);
2171         return AVERROR(ENOMEM);
2172     }
2173
2174     /* open each encoder */
2175     for (i = 0; i < nb_output_streams; i++) {
2176         ost = &output_streams[i];
2177         if (ost->encoding_needed) {
2178             AVCodec *codec = ost->enc;
2179             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2180             if (!codec) {
2181                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2182                          ost->st->codec->codec_id, ost->file_index, ost->index);
2183                 ret = AVERROR(EINVAL);
2184                 goto dump_format;
2185             }
2186             if (dec->subtitle_header) {
2187                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2188                 if (!ost->st->codec->subtitle_header) {
2189                     ret = AVERROR(ENOMEM);
2190                     goto dump_format;
2191                 }
2192                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2193                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2194             }
2195             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2196                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2197                         ost->file_index, ost->index);
2198                 ret = AVERROR(EINVAL);
2199                 goto dump_format;
2200             }
2201             assert_codec_experimental(ost->st->codec, 1);
2202             assert_avoptions(ost->opts);
2203             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2204                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2205                                              "It takes bits/s as argument, not kbits/s\n");
2206             extra_size += ost->st->codec->extradata_size;
2207         }
2208     }
2209
2210     /* init input streams */
2211     for (i = 0; i < nb_input_streams; i++)
2212         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error)) < 0))
2213             goto dump_format;
2214
2215     /* open files and write file headers */
2216     for (i = 0; i < nb_output_files; i++) {
2217         os = output_files[i].ctx;
2218         if (avformat_write_header(os, &output_files[i].opts) < 0) {
2219             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2220             ret = AVERROR(EINVAL);
2221             goto dump_format;
2222         }
2223 //        assert_avoptions(output_files[i].opts);
2224         if (strcmp(os->oformat->name, "rtp")) {
2225             want_sdp = 0;
2226         }
2227     }
2228
2229  dump_format:
2230     /* dump the file output parameters - cannot be done before in case
2231        of stream copy */
2232     for(i=0;i<nb_output_files;i++) {
2233         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2234     }
2235
2236     /* dump the stream mapping */
2237     if (verbose >= 0) {
2238         fprintf(stderr, "Stream mapping:\n");
2239         for (i = 0; i < nb_output_streams;i ++) {
2240             ost = &output_streams[i];
2241             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2242                     input_streams[ost->source_index].file_index,
2243                     input_streams[ost->source_index].st->index,
2244                     ost->file_index,
2245                     ost->index);
2246             if (ost->sync_ist != &input_streams[ost->source_index])
2247                 fprintf(stderr, " [sync #%d.%d]",
2248                         ost->sync_ist->file_index,
2249                         ost->sync_ist->st->index);
2250             if (ost->st->stream_copy)
2251                 fprintf(stderr, " (copy)");
2252             fprintf(stderr, "\n");
2253         }
2254     }
2255
2256     if (ret) {
2257         fprintf(stderr, "%s\n", error);
2258         return ret;
2259     }
2260
2261     if (want_sdp) {
2262         print_sdp(output_files, nb_output_files);
2263     }
2264
2265     return 0;
2266 }
2267
2268 /*
2269  * The following code is the main loop of the file converter
2270  */
2271 static int transcode(OutputFile *output_files,
2272                      int nb_output_files,
2273                      InputFile *input_files,
2274                      int nb_input_files)
2275 {
2276     int ret, i;
2277     AVFormatContext *is, *os;
2278     OutputStream *ost;
2279     InputStream *ist;
2280     uint8_t *no_packet;
2281     int no_packet_count=0;
2282     int64_t timer_start;
2283     int key;
2284
2285     if (!(no_packet = av_mallocz(nb_input_files)))
2286         exit_program(1);
2287
2288     ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2289     if (ret < 0)
2290         goto fail;
2291
2292     if (!using_stdin) {
2293         if(verbose >= 0)
2294             fprintf(stderr, "Press [q] to stop, [?] for help\n");
2295         avio_set_interrupt_cb(decode_interrupt_cb);
2296     }
2297     term_init();
2298
2299     timer_start = av_gettime();
2300
2301     for(; received_sigterm == 0;) {
2302         int file_index, ist_index;
2303         AVPacket pkt;
2304         int64_t ipts_min;
2305         double opts_min;
2306
2307     redo:
2308         ipts_min = INT64_MAX;
2309         opts_min= 1e100;
2310         /* if 'q' pressed, exits */
2311         if (!using_stdin) {
2312             if (q_pressed)
2313                 break;
2314             /* read_key() returns 0 on EOF */
2315             key = read_key();
2316             if (key == 'q')
2317                 break;
2318             if (key == '+') verbose++;
2319             if (key == '-') verbose--;
2320             if (key == 's') qp_hist     ^= 1;
2321             if (key == 'h'){
2322                 if (do_hex_dump){
2323                     do_hex_dump = do_pkt_dump = 0;
2324                 } else if(do_pkt_dump){
2325                     do_hex_dump = 1;
2326                 } else
2327                     do_pkt_dump = 1;
2328                 av_log_set_level(AV_LOG_DEBUG);
2329             }
2330             if (key == 'd' || key == 'D'){
2331                 int debug=0;
2332                 if(key == 'D') {
2333                     debug = input_streams[0].st->codec->debug<<1;
2334                     if(!debug) debug = 1;
2335                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2336                         debug += debug;
2337                 }else
2338                     scanf("%d", &debug);
2339                 for(i=0;i<nb_input_streams;i++) {
2340                     input_streams[i].st->codec->debug = debug;
2341                 }
2342                 for(i=0;i<nb_output_streams;i++) {
2343                     ost = &output_streams[i];
2344                     ost->st->codec->debug = debug;
2345                 }
2346                 if(debug) av_log_set_level(AV_LOG_DEBUG);
2347                 fprintf(stderr,"debug=%d\n", debug);
2348             }
2349             if (key == '?'){
2350                 fprintf(stderr, "key    function\n"
2351                                 "?      show this help\n"
2352                                 "+      increase verbosity\n"
2353                                 "-      decrease verbosity\n"
2354                                 "D      cycle through available debug modes\n"
2355                                 "h      dump packets/hex press to cycle through the 3 states\n"
2356                                 "q      quit\n"
2357                                 "s      Show QP histogram\n"
2358                 );
2359             }
2360         }
2361
2362         /* select the stream that we must read now by looking at the
2363            smallest output pts */
2364         file_index = -1;
2365         for (i = 0; i < nb_output_streams; i++) {
2366             OutputFile *of;
2367             int64_t ipts;
2368             double  opts;
2369             ost = &output_streams[i];
2370             of = &output_files[ost->file_index];
2371             os = output_files[ost->file_index].ctx;
2372             ist = &input_streams[ost->source_index];
2373             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2374                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2375                 continue;
2376             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2377             ipts = ist->pts;
2378             if (!input_files[ist->file_index].eof_reached){
2379                 if(ipts < ipts_min) {
2380                     ipts_min = ipts;
2381                     if(input_sync ) file_index = ist->file_index;
2382                 }
2383                 if(opts < opts_min) {
2384                     opts_min = opts;
2385                     if(!input_sync) file_index = ist->file_index;
2386                 }
2387             }
2388             if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
2389                 file_index= -1;
2390                 break;
2391             }
2392         }
2393         /* if none, if is finished */
2394         if (file_index < 0) {
2395             if(no_packet_count){
2396                 no_packet_count=0;
2397                 memset(no_packet, 0, nb_input_files);
2398                 usleep(10000);
2399                 continue;
2400             }
2401             break;
2402         }
2403
2404         /* read a frame from it and output it in the fifo */
2405         is = input_files[file_index].ctx;
2406         ret= av_read_frame(is, &pkt);
2407         if(ret == AVERROR(EAGAIN)){
2408             no_packet[file_index]=1;
2409             no_packet_count++;
2410             continue;
2411         }
2412         if (ret < 0) {
2413             input_files[file_index].eof_reached = 1;
2414             if (opt_shortest)
2415                 break;
2416             else
2417                 continue;
2418         }
2419
2420         no_packet_count=0;
2421         memset(no_packet, 0, nb_input_files);
2422
2423         if (do_pkt_dump) {
2424             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2425                              is->streams[pkt.stream_index]);
2426         }
2427         /* the following test is needed in case new streams appear
2428            dynamically in stream : we ignore them */
2429         if (pkt.stream_index >= input_files[file_index].nb_streams)
2430             goto discard_packet;
2431         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2432         ist = &input_streams[ist_index];
2433         if (ist->discard)
2434             goto discard_packet;
2435
2436         if (pkt.dts != AV_NOPTS_VALUE)
2437             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2438         if (pkt.pts != AV_NOPTS_VALUE)
2439             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2440
2441         if (ist->ts_scale) {
2442             if(pkt.pts != AV_NOPTS_VALUE)
2443                 pkt.pts *= ist->ts_scale;
2444             if(pkt.dts != AV_NOPTS_VALUE)
2445                 pkt.dts *= ist->ts_scale;
2446         }
2447
2448 //        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);
2449         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2450             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2451             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2452             int64_t delta= pkt_dts - ist->next_pts;
2453             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2454                 input_files[ist->file_index].ts_offset -= delta;
2455                 if (verbose > 2)
2456                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2457                             delta, input_files[ist->file_index].ts_offset);
2458                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2459                 if(pkt.pts != AV_NOPTS_VALUE)
2460                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2461             }
2462         }
2463
2464         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2465         if (output_packet(ist, ist_index, output_streams, nb_output_streams, &pkt) < 0) {
2466
2467             if (verbose >= 0)
2468                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2469                         ist->file_index, ist->st->index);
2470             if (exit_on_error)
2471                 exit_program(1);
2472             av_free_packet(&pkt);
2473             goto redo;
2474         }
2475
2476     discard_packet:
2477         av_free_packet(&pkt);
2478
2479         /* dump report by using the output first video and audio streams */
2480         print_report(output_files, output_streams, nb_output_streams, 0, timer_start);
2481     }
2482
2483     /* at the end of stream, we must flush the decoder buffers */
2484     for (i = 0; i < nb_input_streams; i++) {
2485         ist = &input_streams[i];
2486         if (ist->decoding_needed) {
2487             output_packet(ist, i, output_streams, nb_output_streams, NULL);
2488         }
2489     }
2490     flush_encoders(output_streams, nb_output_streams);
2491
2492     term_exit();
2493
2494     /* write the trailer if needed and close file */
2495     for(i=0;i<nb_output_files;i++) {
2496         os = output_files[i].ctx;
2497         av_write_trailer(os);
2498     }
2499
2500     /* dump report by using the first video and audio streams */
2501     print_report(output_files, output_streams, nb_output_streams, 1, timer_start);
2502
2503     /* close each encoder */
2504     for (i = 0; i < nb_output_streams; i++) {
2505         ost = &output_streams[i];
2506         if (ost->encoding_needed) {
2507             av_freep(&ost->st->codec->stats_in);
2508             avcodec_close(ost->st->codec);
2509         }
2510 #if CONFIG_AVFILTER
2511         avfilter_graph_free(&ost->graph);
2512 #endif
2513     }
2514
2515     /* close each decoder */
2516     for (i = 0; i < nb_input_streams; i++) {
2517         ist = &input_streams[i];
2518         if (ist->decoding_needed) {
2519             avcodec_close(ist->st->codec);
2520         }
2521     }
2522
2523     /* finished ! */
2524     ret = 0;
2525
2526  fail:
2527     av_freep(&bit_buffer);
2528     av_freep(&no_packet);
2529
2530     if (output_streams) {
2531         for (i = 0; i < nb_output_streams; i++) {
2532             ost = &output_streams[i];
2533             if (ost) {
2534                 if (ost->st->stream_copy)
2535                     av_freep(&ost->st->codec->extradata);
2536                 if (ost->logfile) {
2537                     fclose(ost->logfile);
2538                     ost->logfile = NULL;
2539                 }
2540                 av_fifo_free(ost->fifo); /* works even if fifo is not
2541                                              initialized but set to zero */
2542                 av_freep(&ost->st->codec->subtitle_header);
2543                 av_free(ost->resample_frame.data[0]);
2544                 av_free(ost->forced_kf_pts);
2545                 if (ost->video_resample)
2546                     sws_freeContext(ost->img_resample_ctx);
2547                 if (ost->resample)
2548                     audio_resample_close(ost->resample);
2549                 if (ost->reformat_ctx)
2550                     av_audio_convert_free(ost->reformat_ctx);
2551                 av_dict_free(&ost->opts);
2552             }
2553         }
2554     }
2555     return ret;
2556 }
2557
2558 static int opt_format(const char *opt, const char *arg)
2559 {
2560     last_asked_format = arg;
2561     return 0;
2562 }
2563
2564 static int opt_video_rc_override_string(const char *opt, const char *arg)
2565 {
2566     video_rc_override_string = arg;
2567     return 0;
2568 }
2569
2570 static int opt_me_threshold(const char *opt, const char *arg)
2571 {
2572     me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2573     return 0;
2574 }
2575
2576 static int opt_verbose(const char *opt, const char *arg)
2577 {
2578     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2579     return 0;
2580 }
2581
2582 static int opt_frame_rate(const char *opt, const char *arg)
2583 {
2584     if (av_parse_video_rate(&frame_rate, arg) < 0) {
2585         fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2586         exit_program(1);
2587     }
2588     return 0;
2589 }
2590
2591 static int opt_frame_crop(const char *opt, const char *arg)
2592 {
2593     fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
2594     return AVERROR(EINVAL);
2595 }
2596
2597 static int opt_frame_size(const char *opt, const char *arg)
2598 {
2599     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2600         fprintf(stderr, "Incorrect frame size\n");
2601         return AVERROR(EINVAL);
2602     }
2603     return 0;
2604 }
2605
2606 static int opt_pad(const char *opt, const char *arg) {
2607     fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2608     return -1;
2609 }
2610
2611 static int opt_frame_pix_fmt(const char *opt, const char *arg)
2612 {
2613     if (strcmp(arg, "list")) {
2614         frame_pix_fmt = av_get_pix_fmt(arg);
2615         if (frame_pix_fmt == PIX_FMT_NONE) {
2616             fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2617             return AVERROR(EINVAL);
2618         }
2619     } else {
2620         opt_pix_fmts(NULL, NULL);
2621         exit_program(0);
2622     }
2623     return 0;
2624 }
2625
2626 static int opt_frame_aspect_ratio(const char *opt, const char *arg)
2627 {
2628     int x = 0, y = 0;
2629     double ar = 0;
2630     const char *p;
2631     char *end;
2632
2633     p = strchr(arg, ':');
2634     if (p) {
2635         x = strtol(arg, &end, 10);
2636         if (end == p)
2637             y = strtol(end+1, &end, 10);
2638         if (x > 0 && y > 0)
2639             ar = (double)x / (double)y;
2640     } else
2641         ar = strtod(arg, NULL);
2642
2643     if (!ar) {
2644         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2645         return AVERROR(EINVAL);
2646     }
2647     frame_aspect_ratio = ar;
2648     return 0;
2649 }
2650
2651 static int opt_metadata(const char *opt, const char *arg)
2652 {
2653     char *mid= strchr(arg, '=');
2654
2655     if(!mid){
2656         fprintf(stderr, "Missing =\n");
2657         exit_program(1);
2658     }
2659     *mid++= 0;
2660
2661     av_dict_set(&metadata, arg, mid, 0);
2662
2663     return 0;
2664 }
2665
2666 static int opt_qscale(const char *opt, const char *arg)
2667 {
2668     video_qscale = parse_number_or_die(opt, arg, OPT_FLOAT, 0, 255);
2669     if (video_qscale <= 0 || video_qscale > 255) {
2670         fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2671         return AVERROR(EINVAL);
2672     }
2673     return 0;
2674 }
2675
2676 static int opt_top_field_first(const char *opt, const char *arg)
2677 {
2678     top_field_first = parse_number_or_die(opt, arg, OPT_INT, 0, 1);
2679     return opt_default(opt, arg);
2680 }
2681
2682 static int opt_thread_count(const char *opt, const char *arg)
2683 {
2684     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2685 #if !HAVE_THREADS
2686     if (verbose >= 0)
2687         fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2688 #endif
2689     return 0;
2690 }
2691
2692 static int opt_audio_sample_fmt(const char *opt, const char *arg)
2693 {
2694     if (strcmp(arg, "list")) {
2695         audio_sample_fmt = av_get_sample_fmt(arg);
2696         if (audio_sample_fmt == AV_SAMPLE_FMT_NONE) {
2697             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg);
2698             return AVERROR(EINVAL);
2699         }
2700     } else {
2701         int i;
2702         char fmt_str[128];
2703         for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
2704             printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
2705         exit_program(0);
2706     }
2707     return 0;
2708 }
2709
2710 static int opt_audio_rate(const char *opt, const char *arg)
2711 {
2712     audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2713     return 0;
2714 }
2715
2716 static int opt_audio_channels(const char *opt, const char *arg)
2717 {
2718     audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2719     return 0;
2720 }
2721
2722 static int opt_codec(const char *opt, const char *arg)
2723 {
2724     return av_dict_set(&codec_names, opt, arg, 0);
2725 }
2726
2727 static int opt_audio_codec(const char *opt, const char *arg)
2728 {
2729     return opt_codec("codec:a", arg);
2730 }
2731
2732 static int opt_video_codec(const char *opt, const char *arg)
2733 {
2734     return opt_codec("codec:v", arg);
2735 }
2736
2737 static int opt_subtitle_codec(const char *opt, const char *arg)
2738 {
2739     return opt_codec("codec:s", arg);
2740 }
2741
2742 static int opt_data_codec(const char *opt, const char *arg)
2743 {
2744     return opt_codec("codec:d", arg);
2745 }
2746
2747 static int opt_codec_tag(const char *opt, const char *arg)
2748 {
2749     char *tail;
2750     uint32_t *codec_tag;
2751
2752     codec_tag = !strcmp(opt, "atag") ? &audio_codec_tag :
2753                 !strcmp(opt, "vtag") ? &video_codec_tag :
2754                 !strcmp(opt, "stag") ? &subtitle_codec_tag : NULL;
2755     if (!codec_tag)
2756         return -1;
2757
2758     *codec_tag = strtol(arg, &tail, 0);
2759     if (!tail || *tail)
2760         *codec_tag = AV_RL32(arg);
2761
2762     return 0;
2763 }
2764
2765 static int opt_map(const char *opt, const char *arg)
2766 {
2767     StreamMap *m = NULL;
2768     int i, negative = 0, file_idx;
2769     int sync_file_idx = -1, sync_stream_idx;
2770     char *p, *sync;
2771     char *map;
2772
2773     if (*arg == '-') {
2774         negative = 1;
2775         arg++;
2776     }
2777     map = av_strdup(arg);
2778
2779     /* parse sync stream first, just pick first matching stream */
2780     if (sync = strchr(map, ',')) {
2781         *sync = 0;
2782         sync_file_idx = strtol(sync + 1, &sync, 0);
2783         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2784             av_log(NULL, AV_LOG_ERROR, "Invalid sync file index: %d.\n", sync_file_idx);
2785             exit_program(1);
2786         }
2787         if (*sync)
2788             sync++;
2789         for (i = 0; i < input_files[sync_file_idx].ctx->nb_streams; i++)
2790             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2791                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2792                 sync_stream_idx = i;
2793                 break;
2794             }
2795         if (i == input_files[sync_file_idx].ctx->nb_streams) {
2796             av_log(NULL, AV_LOG_ERROR, "Sync stream specification in map %s does not "
2797                                        "match any streams.\n", arg);
2798             exit_program(1);
2799         }
2800     }
2801
2802
2803     file_idx = strtol(map, &p, 0);
2804     if (file_idx >= nb_input_files || file_idx < 0) {
2805         av_log(NULL, AV_LOG_ERROR, "Invalid input file index: %d.\n", file_idx);
2806         exit_program(1);
2807     }
2808     if (negative)
2809         /* disable some already defined maps */
2810         for (i = 0; i < nb_stream_maps; i++) {
2811             m = &stream_maps[i];
2812             if (check_stream_specifier(input_files[m->file_index].ctx,
2813                                        input_files[m->file_index].ctx->streams[m->stream_index],
2814                                        *p == ':' ? p + 1 : p) > 0)
2815                 m->disabled = 1;
2816         }
2817     else
2818         for (i = 0; i < input_files[file_idx].ctx->nb_streams; i++) {
2819             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2820                         *p == ':' ? p + 1 : p) <= 0)
2821                 continue;
2822             stream_maps = grow_array(stream_maps, sizeof(*stream_maps), &nb_stream_maps, nb_stream_maps + 1);
2823             m = &stream_maps[nb_stream_maps - 1];
2824
2825             m->file_index   = file_idx;
2826             m->stream_index = i;
2827
2828             if (sync_file_idx >= 0) {
2829                 m->sync_file_index   = sync_file_idx;
2830                 m->sync_stream_index = sync_stream_idx;
2831             } else {
2832                 m->sync_file_index   = file_idx;
2833                 m->sync_stream_index = i;
2834             }
2835         }
2836
2837     if (!m) {
2838         av_log(NULL, AV_LOG_ERROR, "Stream map '%s' matches no streams.\n", arg);
2839         exit_program(1);
2840     }
2841
2842     av_freep(&map);
2843     return 0;
2844 }
2845
2846 static void parse_meta_type(char *arg, char *type, int *index)
2847 {
2848     if (*arg == ':') {
2849         *type = *(++arg);
2850         switch (*arg) {
2851         case 'g':
2852             break;
2853         case 's':
2854         case 'c':
2855         case 'p':
2856             if (*(++arg) == ':')
2857                 *index = strtol(++arg, NULL, 0);
2858             break;
2859         default:
2860             fprintf(stderr, "Invalid metadata type %c.\n", *arg);
2861             exit_program(1);
2862         }
2863     } else
2864         *type = 'g';
2865 }
2866
2867 static int opt_map_metadata(const char *opt, const char *arg)
2868 {
2869     MetadataMap *m, *m1;
2870     char *p;
2871
2872     meta_data_maps = grow_array(meta_data_maps, sizeof(*meta_data_maps),
2873                                 &nb_meta_data_maps, nb_meta_data_maps + 1);
2874
2875     m = &meta_data_maps[nb_meta_data_maps - 1][1];
2876     m->file = strtol(arg, &p, 0);
2877     parse_meta_type(p, &m->type, &m->index);
2878
2879     m1 = &meta_data_maps[nb_meta_data_maps - 1][0];
2880     if (p = strchr(opt, ':'))
2881         parse_meta_type(p, &m1->type, &m1->index);
2882     else
2883         m1->type = 'g';
2884
2885     if (m->type == 'g' || m1->type == 'g')
2886         metadata_global_autocopy = 0;
2887     if (m->type == 's' || m1->type == 's')
2888         metadata_streams_autocopy = 0;
2889     if (m->type == 'c' || m1->type == 'c')
2890         metadata_chapters_autocopy = 0;
2891
2892     return 0;
2893 }
2894
2895 static int opt_input_ts_scale(const char *opt, const char *arg)
2896 {
2897     return av_dict_set(&ts_scale, opt, arg, 0);
2898 }
2899
2900 static int opt_recording_time(const char *opt, const char *arg)
2901 {
2902     recording_time = parse_time_or_die(opt, arg, 1);
2903     return 0;
2904 }
2905
2906 static int opt_start_time(const char *opt, const char *arg)
2907 {
2908     start_time = parse_time_or_die(opt, arg, 1);
2909     return 0;
2910 }
2911
2912 static int opt_input_ts_offset(const char *opt, const char *arg)
2913 {
2914     input_ts_offset = parse_time_or_die(opt, arg, 1);
2915     return 0;
2916 }
2917
2918 static enum CodecID find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
2919 {
2920     const char *codec_string = encoder ? "encoder" : "decoder";
2921     AVCodec *codec;
2922
2923     if(!name)
2924         return CODEC_ID_NONE;
2925     codec = encoder ?
2926         avcodec_find_encoder_by_name(name) :
2927         avcodec_find_decoder_by_name(name);
2928     if(!codec) {
2929         av_log(NULL, AV_LOG_ERROR, "Unknown %s '%s'\n", codec_string, name);
2930         exit_program(1);
2931     }
2932     if(codec->type != type) {
2933         av_log(NULL, AV_LOG_ERROR, "Invalid %s type '%s'\n", codec_string, name);
2934         exit_program(1);
2935     }
2936     return codec->id;
2937 }
2938
2939 static AVCodec *choose_codec(AVFormatContext *s, AVStream *st, enum AVMediaType type, AVDictionary *codec_names)
2940 {
2941     AVDictionaryEntry *e = NULL;
2942     char *codec_name = NULL;
2943     int ret;
2944
2945     while (e = av_dict_get(codec_names, "", e, AV_DICT_IGNORE_SUFFIX)) {
2946         char *p = strchr(e->key, ':');
2947
2948         if ((ret = check_stream_specifier(s, st, p ? p + 1 : "")) > 0)
2949             codec_name = e->value;
2950         else if (ret < 0)
2951             exit_program(1);
2952     }
2953
2954     if (!codec_name) {
2955         if (s->oformat) {
2956             st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename, NULL, type);
2957             return avcodec_find_encoder(st->codec->codec_id);
2958         }
2959     } else if (!strcmp(codec_name, "copy"))
2960         st->stream_copy = 1;
2961     else {
2962         st->codec->codec_id = find_codec_or_die(codec_name, type, s->iformat == NULL);
2963         return s->oformat ? avcodec_find_encoder_by_name(codec_name) :
2964                             avcodec_find_decoder_by_name(codec_name);
2965     }
2966
2967     return NULL;
2968 }
2969
2970 /**
2971  * Add all the streams from the given input file to the global
2972  * list of input streams.
2973  */
2974 static void add_input_streams(AVFormatContext *ic)
2975 {
2976     int i, rfps, rfps_base, ret;
2977
2978     for (i = 0; i < ic->nb_streams; i++) {
2979         AVStream *st = ic->streams[i];
2980         AVCodecContext *dec = st->codec;
2981         AVDictionaryEntry *e = NULL;
2982         InputStream *ist;
2983         char *scale = NULL;
2984
2985         dec->thread_count = thread_count;
2986
2987         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
2988         ist = &input_streams[nb_input_streams - 1];
2989         ist->st = st;
2990         ist->file_index = nb_input_files;
2991         ist->discard = 1;
2992         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
2993
2994         while (e = av_dict_get(ts_scale, "", e, AV_DICT_IGNORE_SUFFIX)) {
2995             char *p = strchr(e->key, ':');
2996
2997             if ((ret = check_stream_specifier(ic, st, p ? p + 1 : "")) > 0)
2998                 scale = e->value;
2999             else if (ret < 0)
3000                 exit_program(1);
3001         }
3002         if (scale)
3003             ist->ts_scale = strtod(scale, NULL);
3004
3005         ist->dec = choose_codec(ic, st, dec->codec_type, codec_names);
3006
3007         switch (dec->codec_type) {
3008         case AVMEDIA_TYPE_AUDIO:
3009             if(!ist->dec)
3010                 ist->dec = avcodec_find_decoder(dec->codec_id);
3011             if(audio_disable)
3012                 st->discard= AVDISCARD_ALL;
3013             break;
3014         case AVMEDIA_TYPE_VIDEO:
3015             if(!ist->dec)
3016                 ist->dec = avcodec_find_decoder(dec->codec_id);
3017             rfps      = ic->streams[i]->r_frame_rate.num;
3018             rfps_base = ic->streams[i]->r_frame_rate.den;
3019             if (dec->lowres) {
3020                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3021             }
3022             if(me_threshold)
3023                 dec->debug |= FF_DEBUG_MV;
3024
3025             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3026
3027                 if (verbose >= 0)
3028                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3029                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3030
3031                     (float)rfps / rfps_base, rfps, rfps_base);
3032             }
3033
3034             if(video_disable)
3035                 st->discard= AVDISCARD_ALL;
3036             else if(video_discard)
3037                 st->discard= video_discard;
3038             break;
3039         case AVMEDIA_TYPE_DATA:
3040             break;
3041         case AVMEDIA_TYPE_SUBTITLE:
3042             if(!ist->dec)
3043                 ist->dec = avcodec_find_decoder(dec->codec_id);
3044             if(subtitle_disable)
3045                 st->discard = AVDISCARD_ALL;
3046             break;
3047         case AVMEDIA_TYPE_ATTACHMENT:
3048         case AVMEDIA_TYPE_UNKNOWN:
3049             break;
3050         default:
3051             abort();
3052         }
3053     }
3054 }
3055
3056 static int opt_input_file(const char *opt, const char *filename)
3057 {
3058     AVFormatContext *ic;
3059     AVInputFormat *file_iformat = NULL;
3060     int err, i, ret;
3061     int64_t timestamp;
3062     uint8_t buf[128];
3063     AVDictionary **opts;
3064     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
3065
3066     if (last_asked_format) {
3067         if (!(file_iformat = av_find_input_format(last_asked_format))) {
3068             fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
3069             exit_program(1);
3070         }
3071         last_asked_format = NULL;
3072     }
3073
3074     if (!strcmp(filename, "-"))
3075         filename = "pipe:";
3076
3077     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3078                     !strcmp(filename, "/dev/stdin");
3079
3080     /* get default parameters from command line */
3081     ic = avformat_alloc_context();
3082     if (!ic) {
3083         print_error(filename, AVERROR(ENOMEM));
3084         exit_program(1);
3085     }
3086     if (audio_sample_rate) {
3087         snprintf(buf, sizeof(buf), "%d", audio_sample_rate);
3088         av_dict_set(&format_opts, "sample_rate", buf, 0);
3089     }
3090     if (audio_channels) {
3091         snprintf(buf, sizeof(buf), "%d", audio_channels);
3092         av_dict_set(&format_opts, "channels", buf, 0);
3093     }
3094     if (frame_rate.num) {
3095         snprintf(buf, sizeof(buf), "%d/%d", frame_rate.num, frame_rate.den);
3096         av_dict_set(&format_opts, "framerate", buf, 0);
3097     }
3098     if (frame_width && frame_height) {
3099         snprintf(buf, sizeof(buf), "%dx%d", frame_width, frame_height);
3100         av_dict_set(&format_opts, "video_size", buf, 0);
3101     }
3102     if (frame_pix_fmt != PIX_FMT_NONE)
3103         av_dict_set(&format_opts, "pixel_format", av_get_pix_fmt_name(frame_pix_fmt), 0);
3104
3105     ic->flags |= AVFMT_FLAG_NONBLOCK;
3106
3107     /* open the input file with generic libav function */
3108     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3109     if (err < 0) {
3110         print_error(filename, err);
3111         exit_program(1);
3112     }
3113     assert_avoptions(format_opts);
3114
3115     if(opt_programid) {
3116         int i, j;
3117         int found=0;
3118         for(i=0; i<ic->nb_streams; i++){
3119             ic->streams[i]->discard= AVDISCARD_ALL;
3120         }
3121         for(i=0; i<ic->nb_programs; i++){
3122             AVProgram *p= ic->programs[i];
3123             if(p->id != opt_programid){
3124                 p->discard = AVDISCARD_ALL;
3125             }else{
3126                 found=1;
3127                 for(j=0; j<p->nb_stream_indexes; j++){
3128                     ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
3129                 }
3130             }
3131         }
3132         if(!found){
3133             fprintf(stderr, "Specified program id not found\n");
3134             exit_program(1);
3135         }
3136         opt_programid=0;
3137     }
3138
3139     /* apply forced codec ids */
3140     for (i = 0; i < ic->nb_streams; i++)
3141         choose_codec(ic, ic->streams[i], ic->streams[i]->codec->codec_type, codec_names);
3142
3143     /* Set AVCodecContext options for avformat_find_stream_info */
3144     opts = setup_find_stream_info_opts(ic, codec_opts);
3145     orig_nb_streams = ic->nb_streams;
3146
3147     /* If not enough info to get the stream parameters, we decode the
3148        first frames to get it. (used in mpeg case for example) */
3149     ret = avformat_find_stream_info(ic, opts);
3150     if (ret < 0 && verbose >= 0) {
3151         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3152         av_close_input_file(ic);
3153         exit_program(1);
3154     }
3155
3156     timestamp = start_time;
3157     /* add the stream start time */
3158     if (ic->start_time != AV_NOPTS_VALUE)
3159         timestamp += ic->start_time;
3160
3161     /* if seeking requested, we execute it */
3162     if (start_time != 0) {
3163         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3164         if (ret < 0) {
3165             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3166                     filename, (double)timestamp / AV_TIME_BASE);
3167         }
3168         /* reset seek info */
3169         start_time = 0;
3170     }
3171
3172     /* update the current parameters so that they match the one of the input stream */
3173     add_input_streams(ic);
3174
3175     /* dump the file content */
3176     if (verbose >= 0)
3177         av_dump_format(ic, nb_input_files, filename, 0);
3178
3179     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3180     input_files[nb_input_files - 1].ctx        = ic;
3181     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3182     input_files[nb_input_files - 1].ts_offset  = input_ts_offset - (copy_ts ? 0 : timestamp);
3183     input_files[nb_input_files - 1].nb_streams = ic->nb_streams;
3184
3185     top_field_first = -1;
3186     frame_rate    = (AVRational){0, 0};
3187     frame_pix_fmt = PIX_FMT_NONE;
3188     frame_height = 0;
3189     frame_width  = 0;
3190     audio_sample_rate = 0;
3191     audio_channels    = 0;
3192     audio_sample_fmt  = AV_SAMPLE_FMT_NONE;
3193     av_dict_free(&ts_scale);
3194     input_ts_offset = 0;
3195
3196     for (i = 0; i < orig_nb_streams; i++)
3197         av_dict_free(&opts[i]);
3198     av_freep(&opts);
3199     av_dict_free(&codec_names);
3200     uninit_opts();
3201     init_opts();
3202     return 0;
3203 }
3204
3205 static void parse_forced_key_frames(char *kf, OutputStream *ost,
3206                                     AVCodecContext *avctx)
3207 {
3208     char *p;
3209     int n = 1, i;
3210     int64_t t;
3211
3212     for (p = kf; *p; p++)
3213         if (*p == ',')
3214             n++;
3215     ost->forced_kf_count = n;
3216     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
3217     if (!ost->forced_kf_pts) {
3218         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
3219         exit_program(1);
3220     }
3221     for (i = 0; i < n; i++) {
3222         p = i ? strchr(p, ',') + 1 : kf;
3223         t = parse_time_or_die("force_key_frames", p, 1);
3224         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
3225     }
3226 }
3227
3228 static OutputStream *new_output_stream(AVFormatContext *oc, enum AVMediaType type)
3229 {
3230     OutputStream *ost;
3231     AVStream *st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3232     int idx      = oc->nb_streams - 1;
3233
3234     if (!st) {
3235         av_log(NULL, AV_LOG_ERROR, "Could not alloc stream.\n");
3236         exit_program(1);
3237     }
3238
3239     output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
3240                                 nb_output_streams + 1);
3241     ost = &output_streams[nb_output_streams - 1];
3242     ost->file_index = nb_output_files;
3243     ost->index = idx;
3244     ost->st    = st;
3245     st->codec->codec_type = type;
3246     ost->enc = choose_codec(oc, st, type, codec_names);
3247     if (ost->enc) {
3248         ost->opts  = filter_codec_opts(codec_opts, ost->enc->id, oc, st);
3249     }
3250
3251     avcodec_get_context_defaults3(st->codec, ost->enc);
3252     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
3253
3254     ost->sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
3255     return ost;
3256 }
3257
3258 static OutputStream *new_video_stream(AVFormatContext *oc)
3259 {
3260     AVStream *st;
3261     OutputStream *ost;
3262     AVCodecContext *video_enc;
3263
3264     ost = new_output_stream(oc, AVMEDIA_TYPE_VIDEO);
3265     st  = ost->st;
3266     if (!st->stream_copy) {
3267         ost->frame_aspect_ratio = frame_aspect_ratio;
3268         frame_aspect_ratio = 0;
3269 #if CONFIG_AVFILTER
3270         ost->avfilter = vfilters;
3271         vfilters = NULL;
3272 #endif
3273     }
3274
3275     ost->bitstream_filters = video_bitstream_filters;
3276     video_bitstream_filters= NULL;
3277
3278     st->codec->thread_count= thread_count;
3279
3280     video_enc = st->codec;
3281
3282     if(video_codec_tag)
3283         video_enc->codec_tag= video_codec_tag;
3284
3285     if(oc->oformat->flags & AVFMT_GLOBALHEADER) {
3286         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3287     }
3288
3289     if (st->stream_copy) {
3290         video_enc->sample_aspect_ratio =
3291         st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3292     } else {
3293         const char *p;
3294         int i;
3295
3296         if (frame_rate.num)
3297             ost->frame_rate = frame_rate;
3298
3299         video_enc->width = frame_width;
3300         video_enc->height = frame_height;
3301         video_enc->pix_fmt = frame_pix_fmt;
3302         video_enc->bits_per_raw_sample = frame_bits_per_raw_sample;
3303         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3304
3305         if (video_qscale || same_quant) {
3306             video_enc->flags |= CODEC_FLAG_QSCALE;
3307             video_enc->global_quality = FF_QP2LAMBDA * video_qscale;
3308         }
3309
3310         if(intra_matrix)
3311             video_enc->intra_matrix = intra_matrix;
3312         if(inter_matrix)
3313             video_enc->inter_matrix = inter_matrix;
3314
3315         p= video_rc_override_string;
3316         for(i=0; p; i++){
3317             int start, end, q;
3318             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3319             if(e!=3){
3320                 fprintf(stderr, "error parsing rc_override\n");
3321                 exit_program(1);
3322             }
3323             video_enc->rc_override=
3324                 av_realloc(video_enc->rc_override,
3325                            sizeof(RcOverride)*(i+1));
3326             video_enc->rc_override[i].start_frame= start;
3327             video_enc->rc_override[i].end_frame  = end;
3328             if(q>0){
3329                 video_enc->rc_override[i].qscale= q;
3330                 video_enc->rc_override[i].quality_factor= 1.0;
3331             }
3332             else{
3333                 video_enc->rc_override[i].qscale= 0;
3334                 video_enc->rc_override[i].quality_factor= -q/100.0;
3335             }
3336             p= strchr(p, '/');
3337             if(p) p++;
3338         }
3339         video_enc->rc_override_count=i;
3340         if (!video_enc->rc_initial_buffer_occupancy)
3341             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3342         video_enc->me_threshold= me_threshold;
3343         video_enc->intra_dc_precision= intra_dc_precision - 8;
3344
3345         if (do_psnr)
3346             video_enc->flags|= CODEC_FLAG_PSNR;
3347
3348         /* two pass mode */
3349         if (do_pass) {
3350             if (do_pass == 1) {
3351                 video_enc->flags |= CODEC_FLAG_PASS1;
3352             } else {
3353                 video_enc->flags |= CODEC_FLAG_PASS2;
3354             }
3355         }
3356
3357         if (forced_key_frames)
3358             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3359     }
3360     if (video_language) {
3361         av_dict_set(&st->metadata, "language", video_language, 0);
3362         av_freep(&video_language);
3363     }
3364
3365     /* reset some key parameters */
3366     video_disable = 0;
3367     av_freep(&forced_key_frames);
3368     frame_pix_fmt = PIX_FMT_NONE;
3369     return ost;
3370 }
3371
3372 static OutputStream *new_audio_stream(AVFormatContext *oc)
3373 {
3374     AVStream *st;
3375     OutputStream *ost;
3376     AVCodecContext *audio_enc;
3377
3378     ost = new_output_stream(oc, AVMEDIA_TYPE_AUDIO);
3379     st  = ost->st;
3380
3381     ost->bitstream_filters = audio_bitstream_filters;
3382     audio_bitstream_filters= NULL;
3383
3384     st->codec->thread_count= thread_count;
3385
3386     audio_enc = st->codec;
3387     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3388
3389     if(audio_codec_tag)
3390         audio_enc->codec_tag= audio_codec_tag;
3391
3392     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3393         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3394     }
3395     if (!st->stream_copy) {
3396         if (audio_qscale > QSCALE_NONE) {
3397             audio_enc->flags |= CODEC_FLAG_QSCALE;
3398             audio_enc->global_quality = FF_QP2LAMBDA * audio_qscale;
3399         }
3400         if (audio_channels)
3401             audio_enc->channels = audio_channels;
3402         if (audio_sample_fmt != AV_SAMPLE_FMT_NONE)
3403             audio_enc->sample_fmt = audio_sample_fmt;
3404         if (audio_sample_rate)
3405             audio_enc->sample_rate = audio_sample_rate;
3406     }
3407     if (audio_language) {
3408         av_dict_set(&st->metadata, "language", audio_language, 0);
3409         av_freep(&audio_language);
3410     }
3411
3412     /* reset some key parameters */
3413     audio_disable = 0;
3414
3415     return ost;
3416 }
3417
3418 static OutputStream *new_data_stream(AVFormatContext *oc)
3419 {
3420     AVStream *st;
3421     OutputStream *ost;
3422     AVCodecContext *data_enc;
3423
3424     ost = new_output_stream(oc, AVMEDIA_TYPE_DATA);
3425     st  = ost->st;
3426     data_enc = st->codec;
3427     if (!st->stream_copy) {
3428         fprintf(stderr, "Data stream encoding not supported yet (only streamcopy)\n");
3429         exit_program(1);
3430     }
3431
3432     if (data_codec_tag)
3433         data_enc->codec_tag= data_codec_tag;
3434
3435     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3436         data_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3437     }
3438
3439     data_disable = 0;
3440     return ost;
3441 }
3442
3443 static OutputStream *new_subtitle_stream(AVFormatContext *oc)
3444 {
3445     AVStream *st;
3446     OutputStream *ost;
3447     AVCodecContext *subtitle_enc;
3448
3449     ost = new_output_stream(oc, AVMEDIA_TYPE_SUBTITLE);
3450     st  = ost->st;
3451     subtitle_enc = st->codec;
3452
3453     ost->bitstream_filters = subtitle_bitstream_filters;
3454     subtitle_bitstream_filters= NULL;
3455
3456     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3457
3458     if(subtitle_codec_tag)
3459         subtitle_enc->codec_tag= subtitle_codec_tag;
3460
3461     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3462         subtitle_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3463     }
3464
3465     if (subtitle_language) {
3466         av_dict_set(&st->metadata, "language", subtitle_language, 0);
3467         av_freep(&subtitle_language);
3468     }
3469
3470     subtitle_disable = 0;
3471     return ost;
3472 }
3473
3474 /* arg format is "output-stream-index:streamid-value". */
3475 static int opt_streamid(const char *opt, const char *arg)
3476 {
3477     int idx;
3478     char *p;
3479     char idx_str[16];
3480
3481     av_strlcpy(idx_str, arg, sizeof(idx_str));
3482     p = strchr(idx_str, ':');
3483     if (!p) {
3484         fprintf(stderr,
3485                 "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3486                 arg, opt);
3487         exit_program(1);
3488     }
3489     *p++ = '\0';
3490     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, MAX_STREAMS-1);
3491     streamid_map = grow_array(streamid_map, sizeof(*streamid_map), &nb_streamid_map, idx+1);
3492     streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3493     return 0;
3494 }
3495
3496 static int copy_chapters(int infile, int outfile)
3497 {
3498     AVFormatContext *is = input_files[infile].ctx;
3499     AVFormatContext *os = output_files[outfile].ctx;
3500     int i;
3501
3502     for (i = 0; i < is->nb_chapters; i++) {
3503         AVChapter *in_ch = is->chapters[i], *out_ch;
3504         int64_t ts_off   = av_rescale_q(start_time - input_files[infile].ts_offset,
3505                                       AV_TIME_BASE_Q, in_ch->time_base);
3506         int64_t rt       = (recording_time == INT64_MAX) ? INT64_MAX :
3507                            av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
3508
3509
3510         if (in_ch->end < ts_off)
3511             continue;
3512         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
3513             break;
3514
3515         out_ch = av_mallocz(sizeof(AVChapter));
3516         if (!out_ch)
3517             return AVERROR(ENOMEM);
3518
3519         out_ch->id        = in_ch->id;
3520         out_ch->time_base = in_ch->time_base;
3521         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
3522         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
3523
3524         if (metadata_chapters_autocopy)
3525             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
3526
3527         os->nb_chapters++;
3528         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
3529         if (!os->chapters)
3530             return AVERROR(ENOMEM);
3531         os->chapters[os->nb_chapters - 1] = out_ch;
3532     }
3533     return 0;
3534 }
3535
3536 static int read_ffserver_streams(AVFormatContext *s, const char *filename)
3537 {
3538     int i, err;
3539     AVFormatContext *ic = NULL;
3540
3541     err = avformat_open_input(&ic, filename, NULL, NULL);
3542     if (err < 0)
3543         return err;
3544     /* copy stream format */
3545     for(i=0;i<ic->nb_streams;i++) {
3546         AVStream *st;
3547         OutputStream *ost;
3548         AVCodec *codec;
3549
3550         codec = avcodec_find_encoder(ic->streams[i]->codec->codec_id);
3551         ost   = new_output_stream(s, codec->type);
3552         st    = ost->st;
3553
3554         // FIXME: a more elegant solution is needed
3555         memcpy(st, ic->streams[i], sizeof(AVStream));
3556         st->info = av_malloc(sizeof(*st->info));
3557         memcpy(st->info, ic->streams[i]->info, sizeof(*st->info));
3558         avcodec_copy_context(st->codec, ic->streams[i]->codec);
3559
3560         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && !st->stream_copy)
3561             choose_sample_fmt(st, codec);
3562         else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && !st->stream_copy)
3563             choose_pixel_fmt(st, codec);
3564     }
3565
3566     av_close_input_file(ic);
3567     return 0;
3568 }
3569
3570 static int opt_output_file(const char *opt, const char *filename)
3571 {
3572     AVFormatContext *oc;
3573     int i, err;
3574     AVOutputFormat *file_oformat;
3575     OutputStream *ost;
3576     InputStream  *ist;
3577
3578     if (!strcmp(filename, "-"))
3579         filename = "pipe:";
3580
3581     err = avformat_alloc_output_context2(&oc, NULL, last_asked_format, filename);
3582     last_asked_format = NULL;
3583     if (!oc) {
3584         print_error(filename, err);
3585         exit_program(1);
3586     }
3587
3588     file_oformat= oc->oformat;
3589
3590     if (!strcmp(file_oformat->name, "ffm") &&
3591         av_strstart(filename, "http:", NULL)) {
3592         /* special case for files sent to ffserver: we get the stream
3593            parameters from ffserver */
3594         int err = read_ffserver_streams(oc, filename);
3595         if (err < 0) {
3596             print_error(filename, err);
3597             exit_program(1);
3598         }
3599     } else if (!nb_stream_maps) {
3600         /* pick the "best" stream of each type */
3601 #define NEW_STREAM(type, index)\
3602         if (index >= 0) {\
3603             ost = new_ ## type ## _stream(oc);\
3604             ost->source_index = index;\
3605             ost->sync_ist     = &input_streams[index];\
3606             input_streams[index].discard = 0;\
3607         }
3608
3609         /* video: highest resolution */
3610         if (!video_disable && oc->oformat->video_codec != CODEC_ID_NONE) {
3611             int area = 0, idx = -1;
3612             for (i = 0; i < nb_input_streams; i++) {
3613                 ist = &input_streams[i];
3614                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3615                     ist->st->codec->width * ist->st->codec->height > area) {
3616                     area = ist->st->codec->width * ist->st->codec->height;
3617                     idx = i;
3618                 }
3619             }
3620             NEW_STREAM(video, idx);
3621         }
3622
3623         /* audio: most channels */
3624         if (!audio_disable && oc->oformat->audio_codec != CODEC_ID_NONE) {
3625             int channels = 0, idx = -1;
3626             for (i = 0; i < nb_input_streams; i++) {
3627                 ist = &input_streams[i];
3628                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
3629                     ist->st->codec->channels > channels) {
3630                     channels = ist->st->codec->channels;
3631                     idx = i;
3632                 }
3633             }
3634             NEW_STREAM(audio, idx);
3635         }
3636
3637         /* subtitles: pick first */
3638         if (!subtitle_disable && oc->oformat->subtitle_codec != CODEC_ID_NONE) {
3639             for (i = 0; i < nb_input_streams; i++)
3640                 if (input_streams[i].st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3641                     NEW_STREAM(subtitle, i);
3642                     break;
3643                 }
3644         }
3645         /* do something with data? */
3646     } else {
3647         for (i = 0; i < nb_stream_maps; i++) {
3648             StreamMap *map = &stream_maps[i];
3649
3650             if (map->disabled)
3651                 continue;
3652
3653             ist = &input_streams[input_files[map->file_index].ist_index + map->stream_index];
3654             switch (ist->st->codec->codec_type) {
3655             case AVMEDIA_TYPE_VIDEO:    ost = new_video_stream(oc);    break;
3656             case AVMEDIA_TYPE_AUDIO:    ost = new_audio_stream(oc);    break;
3657             case AVMEDIA_TYPE_SUBTITLE: ost = new_subtitle_stream(oc); break;
3658             case AVMEDIA_TYPE_DATA:     ost = new_data_stream(oc);     break;
3659             default:
3660                 av_log(NULL, AV_LOG_ERROR, "Cannot map stream #%d.%d - unsupported type.\n",
3661                        map->file_index, map->stream_index);
3662                 exit_program(1);
3663             }
3664
3665             ost->source_index = input_files[map->file_index].ist_index + map->stream_index;
3666             ost->sync_ist = &input_streams[input_files[map->sync_file_index].ist_index +
3667                                            map->sync_stream_index];
3668             ist->discard = 0;
3669         }
3670     }
3671
3672     av_dict_copy(&oc->metadata, metadata, 0);
3673     av_dict_free(&metadata);
3674
3675
3676     output_files = grow_array(output_files, sizeof(*output_files), &nb_output_files, nb_output_files + 1);
3677     output_files[nb_output_files - 1].ctx       = oc;
3678     output_files[nb_output_files - 1].ost_index = nb_output_streams - oc->nb_streams;
3679     output_files[nb_output_files - 1].recording_time = recording_time;
3680  &n