xmv: Remove superfluous zeroing of already zero'd data
[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 intra_only = 0;
161 static int audio_sample_rate = 0;
162 #define QSCALE_NONE -99999
163 static float audio_qscale = QSCALE_NONE;
164 static int audio_disable = 0;
165 static int audio_channels = 0;
166 static unsigned int audio_codec_tag = 0;
167 static char *audio_language = NULL;
168
169 static int subtitle_disable = 0;
170 static char *subtitle_language = NULL;
171 static unsigned int subtitle_codec_tag = 0;
172
173 static int data_disable = 0;
174 static unsigned int data_codec_tag = 0;
175
176 static float mux_preload= 0.5;
177 static float mux_max_delay= 0.7;
178
179 static int64_t recording_time = INT64_MAX;
180 static int64_t start_time = 0;
181 static int64_t input_ts_offset = 0;
182 static int file_overwrite = 0;
183 static AVDictionary *metadata;
184 static int do_benchmark = 0;
185 static int do_hex_dump = 0;
186 static int do_pkt_dump = 0;
187 static int do_psnr = 0;
188 static int do_pass = 0;
189 static const char *pass_logfilename_prefix;
190 static int video_sync_method= -1;
191 static int audio_sync_method= 0;
192 static float audio_drift_threshold= 0.1;
193 static int copy_ts= 0;
194 static int copy_tb= 0;
195 static int opt_shortest = 0;
196 static char *vstats_filename;
197 static FILE *vstats_file;
198 static int opt_programid = 0;
199 static int copy_initial_nonkeyframes = 0;
200
201 static int rate_emu = 0;
202
203 static int audio_volume = 256;
204
205 static int exit_on_error = 0;
206 static int using_stdin = 0;
207 static int verbose = 1;
208 static int run_as_daemon  = 0;
209 static int thread_count= 1;
210 static int q_pressed = 0;
211 static int64_t video_size = 0;
212 static int64_t audio_size = 0;
213 static int64_t extra_size = 0;
214 static int nb_frames_dup = 0;
215 static int nb_frames_drop = 0;
216 static int input_sync;
217 static uint64_t limit_filesize = 0;
218 static int force_fps = 0;
219 static char *forced_key_frames = NULL;
220
221 static float dts_delta_threshold = 10;
222
223 static int64_t timer_start;
224
225 static uint8_t *audio_buf;
226 static uint8_t *audio_out;
227 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
228
229 static short *samples;
230
231 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
232 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
233 static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL;
234
235 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
236
237 struct InputStream;
238
239 typedef struct OutputStream {
240     int file_index;          /* file index */
241     int index;               /* stream index in the output file */
242     int source_index;        /* InputStream index */
243     AVStream *st;            /* stream in the output file */
244     int encoding_needed;     /* true if encoding needed for this stream */
245     int frame_number;
246     /* input pts and corresponding output pts
247        for A/V sync */
248     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
249     struct InputStream *sync_ist; /* input stream to sync against */
250     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
251     AVBitStreamFilterContext *bitstream_filters;
252     AVCodec *enc;
253
254     /* video only */
255     int video_resample;
256     AVFrame resample_frame;              /* temporary frame for image resampling */
257     struct SwsContext *img_resample_ctx; /* for image resampling */
258     int resample_height;
259     int resample_width;
260     int resample_pix_fmt;
261     AVRational frame_rate;
262
263     float frame_aspect_ratio;
264
265     /* forced key frames */
266     int64_t *forced_kf_pts;
267     int forced_kf_count;
268     int forced_kf_index;
269
270     /* audio only */
271     int audio_resample;
272     ReSampleContext *resample; /* for audio resampling */
273     int resample_sample_fmt;
274     int resample_channels;
275     int resample_sample_rate;
276     int reformat_pair;
277     AVAudioConvert *reformat_ctx;
278     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
279     FILE *logfile;
280
281 #if CONFIG_AVFILTER
282     AVFilterContext *output_video_filter;
283     AVFilterContext *input_video_filter;
284     AVFilterBufferRef *picref;
285     char *avfilter;
286     AVFilterGraph *graph;
287 #endif
288
289    int sws_flags;
290    AVDictionary *opts;
291    int is_past_recording_time;
292 } OutputStream;
293
294 typedef struct InputStream {
295     int file_index;
296     AVStream *st;
297     int discard;             /* true if stream data should be discarded */
298     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
299     AVCodec *dec;
300
301     int64_t       start;     /* time when read started */
302     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
303                                 is not defined */
304     int64_t       pts;       /* current pts */
305     double ts_scale;
306     int is_start;            /* is 1 at the start and after a discontinuity */
307     int showed_multi_packet_warning;
308     AVDictionary *opts;
309 } InputStream;
310
311 typedef struct InputFile {
312     AVFormatContext *ctx;
313     int eof_reached;      /* true if eof reached */
314     int ist_index;        /* index of first stream in ist_table */
315     int buffer_size;      /* current total buffer size */
316     int nb_streams;
317     int64_t ts_offset;
318 } InputFile;
319
320 #if HAVE_TERMIOS_H
321
322 /* init terminal so that we can grab keys */
323 static struct termios oldtty;
324 #endif
325
326 typedef struct OutputFile {
327     AVFormatContext *ctx;
328     AVDictionary *opts;
329     int ost_index;       /* index of the first stream in output_streams */
330     int64_t recording_time; /* desired length of the resulting file in microseconds */
331     int64_t start_time;     /* start time in microseconds */
332 } OutputFile;
333
334 static InputStream *input_streams = NULL;
335 static int         nb_input_streams = 0;
336 static InputFile   *input_files   = NULL;
337 static int         nb_input_files   = 0;
338
339 static OutputStream *output_streams = NULL;
340 static int        nb_output_streams = 0;
341 static OutputFile   *output_files   = NULL;
342 static int        nb_output_files   = 0;
343
344 #if CONFIG_AVFILTER
345
346 static int configure_video_filters(InputStream *ist, OutputStream *ost)
347 {
348     AVFilterContext *last_filter, *filter;
349     /** filter graph containing all filters including input & output */
350     AVCodecContext *codec = ost->st->codec;
351     AVCodecContext *icodec = ist->st->codec;
352     enum PixelFormat pix_fmts[] = { codec->pix_fmt, PIX_FMT_NONE };
353     AVRational sample_aspect_ratio;
354     char args[255];
355     int ret;
356
357     ost->graph = avfilter_graph_alloc();
358
359     if (ist->st->sample_aspect_ratio.num){
360         sample_aspect_ratio = ist->st->sample_aspect_ratio;
361     }else
362         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
363
364     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
365              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
366              sample_aspect_ratio.num, sample_aspect_ratio.den);
367
368     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
369                                        "src", args, NULL, ost->graph);
370     if (ret < 0)
371         return ret;
372     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
373                                        "out", NULL, pix_fmts, ost->graph);
374     if (ret < 0)
375         return ret;
376     last_filter = ost->input_video_filter;
377
378     if (codec->width  != icodec->width || codec->height != icodec->height) {
379         snprintf(args, 255, "%d:%d:flags=0x%X",
380                  codec->width,
381                  codec->height,
382                  ost->sws_flags);
383         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
384                                                 NULL, args, NULL, ost->graph)) < 0)
385             return ret;
386         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
387             return ret;
388         last_filter = filter;
389     }
390
391     snprintf(args, sizeof(args), "flags=0x%X", ost->sws_flags);
392     ost->graph->scale_sws_opts = av_strdup(args);
393
394     if (ost->avfilter) {
395         AVFilterInOut *outputs = avfilter_inout_alloc();
396         AVFilterInOut *inputs  = avfilter_inout_alloc();
397
398         outputs->name    = av_strdup("in");
399         outputs->filter_ctx = last_filter;
400         outputs->pad_idx = 0;
401         outputs->next    = NULL;
402
403         inputs->name    = av_strdup("out");
404         inputs->filter_ctx = ost->output_video_filter;
405         inputs->pad_idx = 0;
406         inputs->next    = NULL;
407
408         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, &inputs, &outputs, NULL)) < 0)
409             return ret;
410         av_freep(&ost->avfilter);
411     } else {
412         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
413             return ret;
414     }
415
416     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
417         return ret;
418
419     codec->width  = ost->output_video_filter->inputs[0]->w;
420     codec->height = ost->output_video_filter->inputs[0]->h;
421     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
422         ost->frame_aspect_ratio ? // overriden by the -aspect cli option
423         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
424         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
425
426     return 0;
427 }
428 #endif /* CONFIG_AVFILTER */
429
430 static void term_exit(void)
431 {
432     av_log(NULL, AV_LOG_QUIET, "%s", "");
433 #if HAVE_TERMIOS_H
434     if(!run_as_daemon)
435         tcsetattr (0, TCSANOW, &oldtty);
436 #endif
437 }
438
439 static volatile int received_sigterm = 0;
440
441 static void
442 sigterm_handler(int sig)
443 {
444     received_sigterm = sig;
445     q_pressed++;
446     term_exit();
447 }
448
449 static void term_init(void)
450 {
451 #if HAVE_TERMIOS_H
452     if(!run_as_daemon){
453     struct termios tty;
454
455     tcgetattr (0, &tty);
456     oldtty = tty;
457     atexit(term_exit);
458
459     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
460                           |INLCR|IGNCR|ICRNL|IXON);
461     tty.c_oflag |= OPOST;
462     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
463     tty.c_cflag &= ~(CSIZE|PARENB);
464     tty.c_cflag |= CS8;
465     tty.c_cc[VMIN] = 1;
466     tty.c_cc[VTIME] = 0;
467
468     tcsetattr (0, TCSANOW, &tty);
469     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
470     }
471 #endif
472
473     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
474     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
475 #ifdef SIGXCPU
476     signal(SIGXCPU, sigterm_handler);
477 #endif
478 }
479
480 /* read a key without blocking */
481 static int read_key(void)
482 {
483 #if HAVE_TERMIOS_H
484     int n = 1;
485     unsigned char ch;
486     struct timeval tv;
487     fd_set rfds;
488
489     if(run_as_daemon)
490         return -1;
491
492     FD_ZERO(&rfds);
493     FD_SET(0, &rfds);
494     tv.tv_sec = 0;
495     tv.tv_usec = 0;
496     n = select(1, &rfds, NULL, NULL, &tv);
497     if (n > 0) {
498         n = read(0, &ch, 1);
499         if (n == 1)
500             return ch;
501
502         return n;
503     }
504 #elif HAVE_KBHIT
505     if(kbhit())
506         return(getch());
507 #endif
508     return -1;
509 }
510
511 static int decode_interrupt_cb(void)
512 {
513     q_pressed += read_key() == 'q';
514     return q_pressed > 1;
515 }
516
517 static int exit_program(int ret)
518 {
519     int i;
520
521     /* close files */
522     for(i=0;i<nb_output_files;i++) {
523         AVFormatContext *s = output_files[i].ctx;
524         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
525             avio_close(s->pb);
526         avformat_free_context(s);
527         av_dict_free(&output_files[i].opts);
528     }
529     for(i=0;i<nb_input_files;i++) {
530         av_close_input_file(input_files[i].ctx);
531     }
532     for (i = 0; i < nb_input_streams; i++)
533         av_dict_free(&input_streams[i].opts);
534
535     av_free(intra_matrix);
536     av_free(inter_matrix);
537
538     if (vstats_file)
539         fclose(vstats_file);
540     av_free(vstats_filename);
541
542     av_free(streamid_map);
543     av_free(meta_data_maps);
544
545     av_freep(&input_streams);
546     av_freep(&input_files);
547     av_freep(&output_streams);
548     av_freep(&output_files);
549
550     uninit_opts();
551     av_free(audio_buf);
552     av_free(audio_out);
553     allocated_audio_buf_size= allocated_audio_out_size= 0;
554     av_free(samples);
555
556 #if CONFIG_AVFILTER
557     avfilter_uninit();
558 #endif
559
560     if (received_sigterm) {
561         fprintf(stderr,
562             "Received signal %d: terminating.\n",
563             (int) received_sigterm);
564         exit (255);
565     }
566
567     exit(ret); /* not all OS-es handle main() return value */
568     return ret;
569 }
570
571 static void assert_avoptions(AVDictionary *m)
572 {
573     AVDictionaryEntry *t;
574     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
575         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
576         exit_program(1);
577     }
578 }
579
580 static void assert_codec_experimental(AVCodecContext *c, int encoder)
581 {
582     const char *codec_string = encoder ? "encoder" : "decoder";
583     AVCodec *codec;
584     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
585         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
586         av_log(NULL, AV_LOG_ERROR, "%s '%s' is experimental and might produce bad "
587                 "results.\nAdd '-strict experimental' if you want to use it.\n",
588                 codec_string, c->codec->name);
589         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
590         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
591             av_log(NULL, AV_LOG_ERROR, "Or use the non experimental %s '%s'.\n",
592                    codec_string, codec->name);
593         exit_program(1);
594     }
595 }
596
597 /* similar to ff_dynarray_add() and av_fast_realloc() */
598 static void *grow_array(void *array, int elem_size, int *size, int new_size)
599 {
600     if (new_size >= INT_MAX / elem_size) {
601         fprintf(stderr, "Array too big.\n");
602         exit_program(1);
603     }
604     if (*size < new_size) {
605         uint8_t *tmp = av_realloc(array, new_size*elem_size);
606         if (!tmp) {
607             fprintf(stderr, "Could not alloc buffer.\n");
608             exit_program(1);
609         }
610         memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
611         *size = new_size;
612         return tmp;
613     }
614     return array;
615 }
616
617 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
618 {
619     if(codec && codec->sample_fmts){
620         const enum AVSampleFormat *p= codec->sample_fmts;
621         for(; *p!=-1; p++){
622             if(*p == st->codec->sample_fmt)
623                 break;
624         }
625         if (*p == -1) {
626             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
627                 av_log(NULL, AV_LOG_ERROR, "Convertion will not be lossless'\n");
628             if(av_get_sample_fmt_name(st->codec->sample_fmt))
629             av_log(NULL, AV_LOG_WARNING,
630                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
631                    av_get_sample_fmt_name(st->codec->sample_fmt),
632                    codec->name,
633                    av_get_sample_fmt_name(codec->sample_fmts[0]));
634             st->codec->sample_fmt = codec->sample_fmts[0];
635         }
636     }
637 }
638
639 static void choose_sample_rate(AVStream *st, AVCodec *codec)
640 {
641     if(codec && codec->supported_samplerates){
642         const int *p= codec->supported_samplerates;
643         int best=0;
644         int best_dist=INT_MAX;
645         for(; *p; p++){
646             int dist= abs(st->codec->sample_rate - *p);
647             if(dist < best_dist){
648                 best_dist= dist;
649                 best= *p;
650             }
651         }
652         if(best_dist){
653             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
654         }
655         st->codec->sample_rate= best;
656     }
657 }
658
659 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
660 {
661     if(codec && codec->pix_fmts){
662         const enum PixelFormat *p= codec->pix_fmts;
663         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
664             if(st->codec->codec_id==CODEC_ID_MJPEG){
665                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
666             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
667                 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};
668             }
669         }
670         for(; *p!=-1; p++){
671             if(*p == st->codec->pix_fmt)
672                 break;
673         }
674         if (*p == -1) {
675             if(st->codec->pix_fmt != PIX_FMT_NONE)
676                 av_log(NULL, AV_LOG_WARNING,
677                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
678                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
679                         codec->name,
680                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
681             st->codec->pix_fmt = codec->pix_fmts[0];
682         }
683     }
684 }
685
686 static double
687 get_sync_ipts(const OutputStream *ost)
688 {
689     const InputStream *ist = ost->sync_ist;
690     OutputFile *of = &output_files[ost->file_index];
691     return (double)(ist->pts - of->start_time)/AV_TIME_BASE;
692 }
693
694 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
695     int ret;
696
697     while(bsfc){
698         AVPacket new_pkt= *pkt;
699         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
700                                           &new_pkt.data, &new_pkt.size,
701                                           pkt->data, pkt->size,
702                                           pkt->flags & AV_PKT_FLAG_KEY);
703         if(a>0){
704             av_free_packet(pkt);
705             new_pkt.destruct= av_destruct_packet;
706         } else if(a<0){
707             fprintf(stderr, "%s failed for stream %d, codec %s",
708                     bsfc->filter->name, pkt->stream_index,
709                     avctx->codec ? avctx->codec->name : "copy");
710             print_error("", a);
711             if (exit_on_error)
712                 exit_program(1);
713         }
714         *pkt= new_pkt;
715
716         bsfc= bsfc->next;
717     }
718
719     ret= av_interleaved_write_frame(s, pkt);
720     if(ret < 0){
721         print_error("av_interleaved_write_frame()", ret);
722         exit_program(1);
723     }
724 }
725
726 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
727
728 static void do_audio_out(AVFormatContext *s,
729                          OutputStream *ost,
730                          InputStream *ist,
731                          unsigned char *buf, int size)
732 {
733     uint8_t *buftmp;
734     int64_t audio_out_size, audio_buf_size;
735     int64_t allocated_for_size= size;
736
737     int size_out, frame_bytes, ret, resample_changed;
738     AVCodecContext *enc= ost->st->codec;
739     AVCodecContext *dec= ist->st->codec;
740     int osize = av_get_bytes_per_sample(enc->sample_fmt);
741     int isize = av_get_bytes_per_sample(dec->sample_fmt);
742     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
743
744 need_realloc:
745     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
746     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
747     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
748     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
749     audio_buf_size*= osize*enc->channels;
750
751     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
752     if(coded_bps > 8*osize)
753         audio_out_size= audio_out_size * coded_bps / (8*osize);
754     audio_out_size += FF_MIN_BUFFER_SIZE;
755
756     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
757         fprintf(stderr, "Buffer sizes too large\n");
758         exit_program(1);
759     }
760
761     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
762     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
763     if (!audio_buf || !audio_out){
764         fprintf(stderr, "Out of memory in do_audio_out\n");
765         exit_program(1);
766     }
767
768     if (enc->channels != dec->channels)
769         ost->audio_resample = 1;
770
771     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
772                        ost->resample_channels    != dec->channels   ||
773                        ost->resample_sample_rate != dec->sample_rate;
774
775     if ((ost->audio_resample && !ost->resample) || resample_changed) {
776         if (resample_changed) {
777             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",
778                    ist->file_index, ist->st->index,
779                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
780                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
781             ost->resample_sample_fmt  = dec->sample_fmt;
782             ost->resample_channels    = dec->channels;
783             ost->resample_sample_rate = dec->sample_rate;
784             if (ost->resample)
785                 audio_resample_close(ost->resample);
786         }
787         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
788         if (audio_sync_method <= 1 &&
789             ost->resample_sample_fmt  == enc->sample_fmt &&
790             ost->resample_channels    == enc->channels   &&
791             ost->resample_sample_rate == enc->sample_rate) {
792             ost->resample = NULL;
793             ost->audio_resample = 0;
794         } else {
795             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
796                 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
797             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
798                                                    enc->sample_rate, dec->sample_rate,
799                                                    enc->sample_fmt,  dec->sample_fmt,
800                                                    16, 10, 0, 0.8);
801             if (!ost->resample) {
802                 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
803                         dec->channels, dec->sample_rate,
804                         enc->channels, enc->sample_rate);
805                 exit_program(1);
806             }
807         }
808     }
809
810 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
811     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
812         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
813         if (ost->reformat_ctx)
814             av_audio_convert_free(ost->reformat_ctx);
815         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
816                                                    dec->sample_fmt, 1, NULL, 0);
817         if (!ost->reformat_ctx) {
818             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
819                 av_get_sample_fmt_name(dec->sample_fmt),
820                 av_get_sample_fmt_name(enc->sample_fmt));
821             exit_program(1);
822         }
823         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
824     }
825
826     if(audio_sync_method){
827         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
828                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
829         double idelta= delta*dec->sample_rate / enc->sample_rate;
830         int byte_delta= ((int)idelta)*2*dec->channels;
831
832         //FIXME resample delay
833         if(fabs(delta) > 50){
834             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
835                 if(byte_delta < 0){
836                     byte_delta= FFMAX(byte_delta, -size);
837                     size += byte_delta;
838                     buf  -= byte_delta;
839                     if(verbose > 2)
840                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
841                     if(!size)
842                         return;
843                     ist->is_start=0;
844                 }else{
845                     static uint8_t *input_tmp= NULL;
846                     input_tmp= av_realloc(input_tmp, byte_delta + size);
847
848                     if(byte_delta > allocated_for_size - size){
849                         allocated_for_size= byte_delta + (int64_t)size;
850                         goto need_realloc;
851                     }
852                     ist->is_start=0;
853
854                     memset(input_tmp, 0, byte_delta);
855                     memcpy(input_tmp + byte_delta, buf, size);
856                     buf= input_tmp;
857                     size += byte_delta;
858                     if(verbose > 2)
859                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
860                 }
861             }else if(audio_sync_method>1){
862                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
863                 av_assert0(ost->audio_resample);
864                 if(verbose > 2)
865                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
866 //                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));
867                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
868             }
869         }
870     }else
871         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
872                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
873
874     if (ost->audio_resample) {
875         buftmp = audio_buf;
876         size_out = audio_resample(ost->resample,
877                                   (short *)buftmp, (short *)buf,
878                                   size / (dec->channels * isize));
879         size_out = size_out * enc->channels * osize;
880     } else {
881         buftmp = buf;
882         size_out = size;
883     }
884
885     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
886         const void *ibuf[6]= {buftmp};
887         void *obuf[6]= {audio_buf};
888         int istride[6]= {isize};
889         int ostride[6]= {osize};
890         int len= size_out/istride[0];
891         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
892             printf("av_audio_convert() failed\n");
893             if (exit_on_error)
894                 exit_program(1);
895             return;
896         }
897         buftmp = audio_buf;
898         size_out = len*osize;
899     }
900
901     /* now encode as many frames as possible */
902     if (enc->frame_size > 1) {
903         /* output resampled raw samples */
904         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
905             fprintf(stderr, "av_fifo_realloc2() failed\n");
906             exit_program(1);
907         }
908         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
909
910         frame_bytes = enc->frame_size * osize * enc->channels;
911
912         while (av_fifo_size(ost->fifo) >= frame_bytes) {
913             AVPacket pkt;
914             av_init_packet(&pkt);
915
916             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
917
918             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
919
920             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
921                                        (short *)audio_buf);
922             if (ret < 0) {
923                 fprintf(stderr, "Audio encoding failed\n");
924                 exit_program(1);
925             }
926             audio_size += ret;
927             pkt.stream_index= ost->index;
928             pkt.data= audio_out;
929             pkt.size= ret;
930             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
931                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
932             pkt.flags |= AV_PKT_FLAG_KEY;
933             write_frame(s, &pkt, enc, ost->bitstream_filters);
934
935             ost->sync_opts += enc->frame_size;
936         }
937     } else {
938         AVPacket pkt;
939         av_init_packet(&pkt);
940
941         ost->sync_opts += size_out / (osize * enc->channels);
942
943         /* output a pcm frame */
944         /* determine the size of the coded buffer */
945         size_out /= osize;
946         if (coded_bps)
947             size_out = size_out*coded_bps/8;
948
949         if(size_out > audio_out_size){
950             fprintf(stderr, "Internal error, buffer size too small\n");
951             exit_program(1);
952         }
953
954         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
955         ret = avcodec_encode_audio(enc, audio_out, size_out,
956                                    (short *)buftmp);
957         if (ret < 0) {
958             fprintf(stderr, "Audio encoding failed\n");
959             exit_program(1);
960         }
961         audio_size += ret;
962         pkt.stream_index= ost->index;
963         pkt.data= audio_out;
964         pkt.size= ret;
965         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
966             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
967         pkt.flags |= AV_PKT_FLAG_KEY;
968         write_frame(s, &pkt, enc, ost->bitstream_filters);
969     }
970 }
971
972 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
973 {
974     AVCodecContext *dec;
975     AVPicture *picture2;
976     AVPicture picture_tmp;
977     uint8_t *buf = 0;
978
979     dec = ist->st->codec;
980
981     /* deinterlace : must be done before any resize */
982     if (do_deinterlace) {
983         int size;
984
985         /* create temporary picture */
986         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
987         buf = av_malloc(size);
988         if (!buf)
989             return;
990
991         picture2 = &picture_tmp;
992         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
993
994         if(avpicture_deinterlace(picture2, picture,
995                                  dec->pix_fmt, dec->width, dec->height) < 0) {
996             /* if error, do not deinterlace */
997             fprintf(stderr, "Deinterlacing failed\n");
998             av_free(buf);
999             buf = NULL;
1000             picture2 = picture;
1001         }
1002     } else {
1003         picture2 = picture;
1004     }
1005
1006     if (picture != picture2)
1007         *picture = *picture2;
1008     *bufp = buf;
1009 }
1010
1011 /* we begin to correct av delay at this threshold */
1012 #define AV_DELAY_MAX 0.100
1013
1014 static void do_subtitle_out(AVFormatContext *s,
1015                             OutputStream *ost,
1016                             InputStream *ist,
1017                             AVSubtitle *sub,
1018                             int64_t pts)
1019 {
1020     static uint8_t *subtitle_out = NULL;
1021     int subtitle_out_max_size = 1024 * 1024;
1022     int subtitle_out_size, nb, i;
1023     AVCodecContext *enc;
1024     AVPacket pkt;
1025
1026     if (pts == AV_NOPTS_VALUE) {
1027         fprintf(stderr, "Subtitle packets must have a pts\n");
1028         if (exit_on_error)
1029             exit_program(1);
1030         return;
1031     }
1032
1033     enc = ost->st->codec;
1034
1035     if (!subtitle_out) {
1036         subtitle_out = av_malloc(subtitle_out_max_size);
1037     }
1038
1039     /* Note: DVB subtitle need one packet to draw them and one other
1040        packet to clear them */
1041     /* XXX: signal it in the codec context ? */
1042     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1043         nb = 2;
1044     else
1045         nb = 1;
1046
1047     for(i = 0; i < nb; i++) {
1048         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1049         // start_display_time is required to be 0
1050         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1051         sub->end_display_time -= sub->start_display_time;
1052         sub->start_display_time = 0;
1053         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1054                                                     subtitle_out_max_size, sub);
1055         if (subtitle_out_size < 0) {
1056             fprintf(stderr, "Subtitle encoding failed\n");
1057             exit_program(1);
1058         }
1059
1060         av_init_packet(&pkt);
1061         pkt.stream_index = ost->index;
1062         pkt.data = subtitle_out;
1063         pkt.size = subtitle_out_size;
1064         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1065         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1066             /* XXX: the pts correction is handled here. Maybe handling
1067                it in the codec would be better */
1068             if (i == 0)
1069                 pkt.pts += 90 * sub->start_display_time;
1070             else
1071                 pkt.pts += 90 * sub->end_display_time;
1072         }
1073         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1074     }
1075 }
1076
1077 static int bit_buffer_size= 1024*256;
1078 static uint8_t *bit_buffer= NULL;
1079
1080 static void do_video_resample(OutputStream *ost,
1081                               InputStream *ist,
1082                               AVFrame *in_picture,
1083                               AVFrame **out_picture)
1084 {
1085     int resample_changed = 0;
1086     AVCodecContext *dec = ist->st->codec;
1087     *out_picture = in_picture;
1088
1089     resample_changed = ost->resample_width   != dec->width  ||
1090                        ost->resample_height  != dec->height ||
1091                        ost->resample_pix_fmt != dec->pix_fmt;
1092
1093 #if !CONFIG_AVFILTER
1094     if (resample_changed) {
1095         av_log(NULL, AV_LOG_INFO,
1096                "Input stream #%d.%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1097                ist->file_index, ist->st->index,
1098                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1099                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1100         ost->resample_width   = dec->width;
1101         ost->resample_height  = dec->height;
1102         ost->resample_pix_fmt = dec->pix_fmt;
1103     }
1104
1105     ost->video_resample = dec->width   != enc->width  ||
1106                           dec->height  != enc->height ||
1107                           dec->pix_fmt != enc->pix_fmt;
1108
1109     if (ost->video_resample) {
1110         *out_picture = &ost->resample_frame;
1111         if (!ost->img_resample_ctx || resample_changed) {
1112             /* initialize the destination picture */
1113             if (!ost->resample_frame.data[0]) {
1114                 avcodec_get_frame_defaults(&ost->resample_frame);
1115                 if (avpicture_alloc((AVPicture *)&ost->resample_frame, enc->pix_fmt,
1116                                     enc->width, enc->height)) {
1117                     fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
1118                     exit_program(1);
1119                 }
1120             }
1121             /* initialize a new scaler context */
1122             sws_freeContext(ost->img_resample_ctx);
1123             ost->img_resample_ctx = sws_getContext(dec->width, dec->height, dec->pix_fmt,
1124                                                    enc->width, enc->height, enc->pix_fmt,
1125                                                    ost->sws_flags, NULL, NULL, NULL);
1126             if (ost->img_resample_ctx == NULL) {
1127                 fprintf(stderr, "Cannot get resampling context\n");
1128                 exit_program(1);
1129             }
1130         }
1131         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1132               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1133     }
1134 #else
1135     if (resample_changed) {
1136         avfilter_graph_free(&ost->graph);
1137         if (configure_video_filters(ist, ost)) {
1138             fprintf(stderr, "Error reinitialising filters!\n");
1139             exit_program(1);
1140         }
1141     }
1142 #endif
1143     if (resample_changed) {
1144         ost->resample_width   = dec->width;
1145         ost->resample_height  = dec->height;
1146         ost->resample_pix_fmt = dec->pix_fmt;
1147     }
1148 }
1149
1150
1151 static void do_video_out(AVFormatContext *s,
1152                          OutputStream *ost,
1153                          InputStream *ist,
1154                          AVFrame *in_picture,
1155                          int *frame_size, float quality)
1156 {
1157     int nb_frames, i, ret, format_video_sync;
1158     AVFrame *final_picture;
1159     AVCodecContext *enc, *dec;
1160     double sync_ipts;
1161
1162     enc = ost->st->codec;
1163     dec = ist->st->codec;
1164
1165     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1166
1167     /* by default, we output a single frame */
1168     nb_frames = 1;
1169
1170     *frame_size = 0;
1171
1172     format_video_sync = video_sync_method;
1173     if (format_video_sync < 0)
1174         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? 2 : 1;
1175
1176     if (format_video_sync) {
1177         double vdelta = sync_ipts - ost->sync_opts;
1178         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1179         if (vdelta < -1.1)
1180             nb_frames = 0;
1181         else if (format_video_sync == 2) {
1182             if(vdelta<=-0.6){
1183                 nb_frames=0;
1184             }else if(vdelta>0.6)
1185                 ost->sync_opts= lrintf(sync_ipts);
1186         }else if (vdelta > 1.1)
1187             nb_frames = lrintf(vdelta);
1188 //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);
1189         if (nb_frames == 0){
1190             ++nb_frames_drop;
1191             if (verbose>2)
1192                 fprintf(stderr, "*** drop!\n");
1193         }else if (nb_frames > 1) {
1194             nb_frames_dup += nb_frames - 1;
1195             if (verbose>2)
1196                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1197         }
1198     }else
1199         ost->sync_opts= lrintf(sync_ipts);
1200
1201     nb_frames= FFMIN(nb_frames, max_frames[AVMEDIA_TYPE_VIDEO] - ost->frame_number);
1202     if (nb_frames <= 0)
1203         return;
1204
1205     do_video_resample(ost, ist, in_picture, &final_picture);
1206
1207     /* duplicates frame if needed */
1208     for(i=0;i<nb_frames;i++) {
1209         AVPacket pkt;
1210         av_init_packet(&pkt);
1211         pkt.stream_index= ost->index;
1212
1213         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1214             /* raw pictures are written as AVPicture structure to
1215                avoid any copies. We support temorarily the older
1216                method. */
1217             AVFrame* old_frame = enc->coded_frame;
1218             enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
1219             pkt.data= (uint8_t *)final_picture;
1220             pkt.size=  sizeof(AVPicture);
1221             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1222             pkt.flags |= AV_PKT_FLAG_KEY;
1223
1224             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1225             enc->coded_frame = old_frame;
1226         } else {
1227             AVFrame big_picture;
1228
1229             big_picture= *final_picture;
1230             /* better than nothing: use input picture interlaced
1231                settings */
1232             big_picture.interlaced_frame = in_picture->interlaced_frame;
1233             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1234                 if(top_field_first == -1)
1235                     big_picture.top_field_first = in_picture->top_field_first;
1236                 else
1237                     big_picture.top_field_first = top_field_first;
1238             }
1239
1240             /* handles same_quant here. This is not correct because it may
1241                not be a global option */
1242             big_picture.quality = quality;
1243             if(!me_threshold)
1244                 big_picture.pict_type = 0;
1245 //            big_picture.pts = AV_NOPTS_VALUE;
1246             big_picture.pts= ost->sync_opts;
1247 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1248 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1249             if (ost->forced_kf_index < ost->forced_kf_count &&
1250                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1251                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1252                 ost->forced_kf_index++;
1253             }
1254             ret = avcodec_encode_video(enc,
1255                                        bit_buffer, bit_buffer_size,
1256                                        &big_picture);
1257             if (ret < 0) {
1258                 fprintf(stderr, "Video encoding failed\n");
1259                 exit_program(1);
1260             }
1261
1262             if(ret>0){
1263                 pkt.data= bit_buffer;
1264                 pkt.size= ret;
1265                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1266                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1267 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1268    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1269    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1270
1271                 if(enc->coded_frame->key_frame)
1272                     pkt.flags |= AV_PKT_FLAG_KEY;
1273                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1274                 *frame_size = ret;
1275                 video_size += ret;
1276                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1277                 //        enc->frame_number-1, ret, enc->pict_type);
1278                 /* if two pass, output log */
1279                 if (ost->logfile && enc->stats_out) {
1280                     fprintf(ost->logfile, "%s", enc->stats_out);
1281                 }
1282             }
1283         }
1284         ost->sync_opts++;
1285         ost->frame_number++;
1286     }
1287 }
1288
1289 static double psnr(double d){
1290     return -10.0*log(d)/log(10.0);
1291 }
1292
1293 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1294                            int frame_size)
1295 {
1296     AVCodecContext *enc;
1297     int frame_number;
1298     double ti1, bitrate, avg_bitrate;
1299
1300     /* this is executed just the first time do_video_stats is called */
1301     if (!vstats_file) {
1302         vstats_file = fopen(vstats_filename, "w");
1303         if (!vstats_file) {
1304             perror("fopen");
1305             exit_program(1);
1306         }
1307     }
1308
1309     enc = ost->st->codec;
1310     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1311         frame_number = ost->frame_number;
1312         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1313         if (enc->flags&CODEC_FLAG_PSNR)
1314             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1315
1316         fprintf(vstats_file,"f_size= %6d ", frame_size);
1317         /* compute pts value */
1318         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1319         if (ti1 < 0.01)
1320             ti1 = 0.01;
1321
1322         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1323         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1324         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1325             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1326         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1327     }
1328 }
1329
1330 static void print_report(OutputFile *output_files,
1331                          OutputStream *ost_table, int nb_ostreams,
1332                          int is_last_report)
1333 {
1334     char buf[1024];
1335     OutputStream *ost;
1336     AVFormatContext *oc;
1337     int64_t total_size;
1338     AVCodecContext *enc;
1339     int frame_number, vid, i;
1340     double bitrate;
1341     int64_t pts = INT64_MAX;
1342     static int64_t last_time = -1;
1343     static int qp_histogram[52];
1344
1345     if (!is_last_report) {
1346         int64_t cur_time;
1347         /* display the report every 0.5 seconds */
1348         cur_time = av_gettime();
1349         if (last_time == -1) {
1350             last_time = cur_time;
1351             return;
1352         }
1353         if ((cur_time - last_time) < 500000)
1354             return;
1355         last_time = cur_time;
1356     }
1357
1358
1359     oc = output_files[0].ctx;
1360
1361     total_size = avio_size(oc->pb);
1362     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1363         total_size= avio_tell(oc->pb);
1364
1365     buf[0] = '\0';
1366     vid = 0;
1367     for(i=0;i<nb_ostreams;i++) {
1368         float q = -1;
1369         ost = &ost_table[i];
1370         enc = ost->st->codec;
1371         if (!ost->st->stream_copy && enc->coded_frame)
1372             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1373         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1374             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1375         }
1376         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1377             float t = (av_gettime()-timer_start) / 1000000.0;
1378
1379             frame_number = ost->frame_number;
1380             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1381                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1382             if(is_last_report)
1383                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1384             if(qp_hist){
1385                 int j;
1386                 int qp = lrintf(q);
1387                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1388                     qp_histogram[qp]++;
1389                 for(j=0; j<32; j++)
1390                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1391             }
1392             if (enc->flags&CODEC_FLAG_PSNR){
1393                 int j;
1394                 double error, error_sum=0;
1395                 double scale, scale_sum=0;
1396                 char type[3]= {'Y','U','V'};
1397                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1398                 for(j=0; j<3; j++){
1399                     if(is_last_report){
1400                         error= enc->error[j];
1401                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1402                     }else{
1403                         error= enc->coded_frame->error[j];
1404                         scale= enc->width*enc->height*255.0*255.0;
1405                     }
1406                     if(j) scale/=4;
1407                     error_sum += error;
1408                     scale_sum += scale;
1409                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1410                 }
1411                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1412             }
1413             vid = 1;
1414         }
1415         /* compute min output value */
1416         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
1417                                       ost->st->time_base, AV_TIME_BASE_Q));
1418     }
1419
1420     if (verbose > 0 || is_last_report) {
1421         int hours, mins, secs, us;
1422         secs = pts / AV_TIME_BASE;
1423         us = pts % AV_TIME_BASE;
1424         mins = secs / 60;
1425         secs %= 60;
1426         hours = mins / 60;
1427         mins %= 60;
1428
1429         bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1430
1431         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1432                  "size=%8.0fkB time=", total_size / 1024.0);
1433         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1434                  "%02d:%02d:%02d.%02d ", hours, mins, secs,
1435                  (100 * us) / AV_TIME_BASE);
1436         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1437                  "bitrate=%6.1fkbits/s", bitrate);
1438
1439         if (nb_frames_dup || nb_frames_drop)
1440           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1441                   nb_frames_dup, nb_frames_drop);
1442
1443         if (verbose >= 0)
1444             fprintf(stderr, "%s    \r", buf);
1445
1446         fflush(stderr);
1447     }
1448
1449     if (is_last_report && verbose >= 0){
1450         int64_t raw= audio_size + video_size + extra_size;
1451         fprintf(stderr, "\n");
1452         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1453                 video_size/1024.0,
1454                 audio_size/1024.0,
1455                 extra_size/1024.0,
1456                 100.0*(total_size - raw)/raw
1457         );
1458     }
1459 }
1460
1461 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1462 {
1463     int fill_char = 0x00;
1464     if (sample_fmt == AV_SAMPLE_FMT_U8)
1465         fill_char = 0x80;
1466     memset(buf, fill_char, size);
1467 }
1468
1469 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1470 static int output_packet(InputStream *ist, int ist_index,
1471                          OutputStream *ost_table, int nb_ostreams,
1472                          const AVPacket *pkt)
1473 {
1474     AVFormatContext *os;
1475     OutputStream *ost;
1476     int ret, i;
1477     int got_output;
1478     AVFrame picture;
1479     void *buffer_to_free = NULL;
1480     static unsigned int samples_size= 0;
1481     AVSubtitle subtitle, *subtitle_to_free;
1482     int64_t pkt_pts = AV_NOPTS_VALUE;
1483 #if CONFIG_AVFILTER
1484     int frame_available;
1485 #endif
1486     float quality;
1487
1488     AVPacket avpkt;
1489     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1490
1491     if(ist->next_pts == AV_NOPTS_VALUE)
1492         ist->next_pts= ist->pts;
1493
1494     if (pkt == NULL) {
1495         /* EOF handling */
1496         av_init_packet(&avpkt);
1497         avpkt.data = NULL;
1498         avpkt.size = 0;
1499         goto handle_eof;
1500     } else {
1501         avpkt = *pkt;
1502     }
1503
1504     if(pkt->dts != AV_NOPTS_VALUE)
1505         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1506     if(pkt->pts != AV_NOPTS_VALUE)
1507         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1508
1509     //while we have more to decode or while the decoder did output something on EOF
1510     while (avpkt.size > 0 || (!pkt && got_output)) {
1511         uint8_t *data_buf, *decoded_data_buf;
1512         int data_size, decoded_data_size;
1513     handle_eof:
1514         ist->pts= ist->next_pts;
1515
1516         if(avpkt.size && avpkt.size != pkt->size &&
1517            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1518             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1519             ist->showed_multi_packet_warning=1;
1520         }
1521
1522         /* decode the packet if needed */
1523         decoded_data_buf = NULL; /* fail safe */
1524         decoded_data_size= 0;
1525         data_buf  = avpkt.data;
1526         data_size = avpkt.size;
1527         subtitle_to_free = NULL;
1528         if (ist->decoding_needed) {
1529             switch(ist->st->codec->codec_type) {
1530             case AVMEDIA_TYPE_AUDIO:{
1531                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1532                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1533                     av_free(samples);
1534                     samples= av_malloc(samples_size);
1535                 }
1536                 decoded_data_size= samples_size;
1537                     /* XXX: could avoid copy if PCM 16 bits with same
1538                        endianness as CPU */
1539                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1540                                             &avpkt);
1541                 if (ret < 0)
1542                     return ret;
1543                 avpkt.data += ret;
1544                 avpkt.size -= ret;
1545                 data_size   = ret;
1546                 got_output  = decoded_data_size > 0;
1547                 /* Some bug in mpeg audio decoder gives */
1548                 /* decoded_data_size < 0, it seems they are overflows */
1549                 if (!got_output) {
1550                     /* no audio frame */
1551                     continue;
1552                 }
1553                 decoded_data_buf = (uint8_t *)samples;
1554                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1555                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1556                 break;}
1557             case AVMEDIA_TYPE_VIDEO:
1558                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1559                     /* XXX: allocate picture correctly */
1560                     avcodec_get_frame_defaults(&picture);
1561                     avpkt.pts = pkt_pts;
1562                     avpkt.dts = ist->pts;
1563                     pkt_pts = AV_NOPTS_VALUE;
1564
1565                     ret = avcodec_decode_video2(ist->st->codec,
1566                                                 &picture, &got_output, &avpkt);
1567                     quality = same_quant ? picture.quality : 0;
1568                     if (ret < 0)
1569                         return ret;
1570                     if (!got_output) {
1571                         /* no picture yet */
1572                         goto discard_packet;
1573                     }
1574                     ist->next_pts = ist->pts = picture.best_effort_timestamp;
1575                     if (ist->st->codec->time_base.num != 0) {
1576                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1577                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1578                                           ist->st->codec->time_base.num * ticks) /
1579                             ist->st->codec->time_base.den;
1580                     }
1581                     avpkt.size = 0;
1582                     buffer_to_free = NULL;
1583                     pre_process_video_frame(ist, (AVPicture *)&picture, &buffer_to_free);
1584                     break;
1585             case AVMEDIA_TYPE_SUBTITLE:
1586                 ret = avcodec_decode_subtitle2(ist->st->codec,
1587                                                &subtitle, &got_output, &avpkt);
1588                 if (ret < 0)
1589                     return ret;
1590                 if (!got_output) {
1591                     goto discard_packet;
1592                 }
1593                 subtitle_to_free = &subtitle;
1594                 avpkt.size = 0;
1595                 break;
1596             default:
1597                 return -1;
1598             }
1599         } else {
1600             switch(ist->st->codec->codec_type) {
1601             case AVMEDIA_TYPE_AUDIO:
1602                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1603                     ist->st->codec->sample_rate;
1604                 break;
1605             case AVMEDIA_TYPE_VIDEO:
1606                 if (ist->st->codec->time_base.num != 0) {
1607                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1608                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1609                                       ist->st->codec->time_base.num * ticks) /
1610                         ist->st->codec->time_base.den;
1611                 }
1612                 break;
1613             }
1614             ret = avpkt.size;
1615             avpkt.size = 0;
1616         }
1617
1618         // preprocess audio (volume)
1619         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1620             if (audio_volume != 256) {
1621                 short *volp;
1622                 volp = samples;
1623                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1624                     int v = ((*volp) * audio_volume + 128) >> 8;
1625                     if (v < -32768) v = -32768;
1626                     if (v >  32767) v = 32767;
1627                     *volp++ = v;
1628                 }
1629             }
1630         }
1631
1632         /* frame rate emulation */
1633         if (rate_emu) {
1634             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1635             int64_t now = av_gettime() - ist->start;
1636             if (pts > now)
1637                 usleep(pts - now);
1638         }
1639         /* if output time reached then transcode raw format,
1640            encode packets and output them */
1641         for (i = 0; i < nb_ostreams; i++) {
1642             OutputFile *of = &output_files[ost_table[i].file_index];
1643             int frame_size;
1644
1645             ost = &ost_table[i];
1646             if (ost->source_index != ist_index)
1647                 continue;
1648
1649             if (of->start_time && ist->pts < of->start_time)
1650                 continue;
1651
1652             if (of->recording_time != INT64_MAX &&
1653                 av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1654                               (AVRational){1, 1000000}) >= 0) {
1655                 ost->is_past_recording_time = 1;
1656                 continue;
1657             }
1658
1659 #if CONFIG_AVFILTER
1660             if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1661                 ost->input_video_filter) {
1662                 if (!picture.sample_aspect_ratio.num)
1663                     picture.sample_aspect_ratio = ist->st->sample_aspect_ratio;
1664                 picture.pts = ist->pts;
1665
1666                 av_vsrc_buffer_add_frame(ost->input_video_filter, &picture, AV_VSRC_BUF_FLAG_OVERWRITE);
1667             }
1668             frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1669                 !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1670             while (frame_available) {
1671                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter) {
1672                     AVRational ist_pts_tb = ost->output_video_filter->inputs[0]->time_base;
1673                     if (av_vsink_buffer_get_video_buffer_ref(ost->output_video_filter, &ost->picref, 0) < 0)
1674                         goto cont;
1675                     if (ost->picref) {
1676                         avfilter_fill_frame_from_video_buffer_ref(&picture, ost->picref);
1677                         ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1678                     }
1679                 }
1680 #endif
1681                 os = output_files[ost->file_index].ctx;
1682
1683                 /* set the input output pts pairs */
1684                 //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
1685
1686                 if (ost->encoding_needed) {
1687                     av_assert0(ist->decoding_needed);
1688                     switch(ost->st->codec->codec_type) {
1689                     case AVMEDIA_TYPE_AUDIO:
1690                         do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1691                         break;
1692                     case AVMEDIA_TYPE_VIDEO:
1693 #if CONFIG_AVFILTER
1694                         if (ost->picref->video && !ost->frame_aspect_ratio)
1695                             ost->st->codec->sample_aspect_ratio = ost->picref->video->sample_aspect_ratio;
1696 #endif
1697                         do_video_out(os, ost, ist, &picture, &frame_size,
1698                                         same_quant ? quality : ost->st->codec->global_quality);
1699                         if (vstats_filename && frame_size)
1700                             do_video_stats(os, ost, frame_size);
1701                         break;
1702                     case AVMEDIA_TYPE_SUBTITLE:
1703                         do_subtitle_out(os, ost, ist, &subtitle,
1704                                         pkt->pts);
1705                         break;
1706                     default:
1707                         abort();
1708                     }
1709                 } else {
1710                     AVFrame avframe; //FIXME/XXX remove this
1711                     AVPicture pict;
1712                     AVPacket opkt;
1713                     int64_t ost_tb_start_time= av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1714                     av_init_packet(&opkt);
1715
1716                     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1717 #if !CONFIG_AVFILTER
1718                         continue;
1719 #else
1720                         goto cont;
1721 #endif
1722
1723                     /* no reencoding needed : output the packet directly */
1724                     /* force the input stream PTS */
1725
1726                     avcodec_get_frame_defaults(&avframe);
1727                     ost->st->codec->coded_frame= &avframe;
1728                     avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1729
1730                     if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1731                         audio_size += data_size;
1732                     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1733                         video_size += data_size;
1734                         ost->sync_opts++;
1735                     }
1736
1737                     opkt.stream_index= ost->index;
1738                     if(pkt->pts != AV_NOPTS_VALUE)
1739                         opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1740                     else
1741                         opkt.pts= AV_NOPTS_VALUE;
1742
1743                     if (pkt->dts == AV_NOPTS_VALUE)
1744                         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1745                     else
1746                         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1747                     opkt.dts -= ost_tb_start_time;
1748
1749                     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1750                     opkt.flags= pkt->flags;
1751
1752                     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1753                     if(   ost->st->codec->codec_id != CODEC_ID_H264
1754                        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1755                        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1756                        ) {
1757                         if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1758                             opkt.destruct= av_destruct_packet;
1759                     } else {
1760                         opkt.data = data_buf;
1761                         opkt.size = data_size;
1762                     }
1763
1764                     if (os->oformat->flags & AVFMT_RAWPICTURE) {
1765                         /* store AVPicture in AVPacket, as expected by the output format */
1766                         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1767                         opkt.data = (uint8_t *)&pict;
1768                         opkt.size = sizeof(AVPicture);
1769                         opkt.flags |= AV_PKT_FLAG_KEY;
1770                     }
1771                     write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1772                     ost->st->codec->frame_number++;
1773                     ost->frame_number++;
1774                     av_free_packet(&opkt);
1775                 }
1776 #if CONFIG_AVFILTER
1777                 cont:
1778                 frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1779                                    ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1780                 if (ost->picref)
1781                     avfilter_unref_buffer(ost->picref);
1782             }
1783 #endif
1784             }
1785
1786         av_free(buffer_to_free);
1787         /* XXX: allocate the subtitles in the codec ? */
1788         if (subtitle_to_free) {
1789             avsubtitle_free(subtitle_to_free);
1790             subtitle_to_free = NULL;
1791         }
1792     }
1793  discard_packet:
1794     if (pkt == NULL) {
1795         /* EOF handling */
1796
1797         for(i=0;i<nb_ostreams;i++) {
1798             ost = &ost_table[i];
1799             if (ost->source_index == ist_index) {
1800                 AVCodecContext *enc= ost->st->codec;
1801                 os = output_files[ost->file_index].ctx;
1802
1803                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1804                     continue;
1805                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1806                     continue;
1807
1808                 if (ost->encoding_needed) {
1809                     for(;;) {
1810                         AVPacket pkt;
1811                         int fifo_bytes;
1812                         av_init_packet(&pkt);
1813                         pkt.stream_index= ost->index;
1814
1815                         switch(ost->st->codec->codec_type) {
1816                         case AVMEDIA_TYPE_AUDIO:
1817                             fifo_bytes = av_fifo_size(ost->fifo);
1818                             ret = 0;
1819                             /* encode any samples remaining in fifo */
1820                             if (fifo_bytes > 0) {
1821                                 int osize = av_get_bytes_per_sample(enc->sample_fmt);
1822                                 int fs_tmp = enc->frame_size;
1823
1824                                 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1825                                 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1826                                     enc->frame_size = fifo_bytes / (osize * enc->channels);
1827                                 } else { /* pad */
1828                                     int frame_bytes = enc->frame_size*osize*enc->channels;
1829                                     if (allocated_audio_buf_size < frame_bytes)
1830                                         exit_program(1);
1831                                     generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1832                                 }
1833
1834                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1835                                 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1836                                                           ost->st->time_base.num, enc->sample_rate);
1837                                 enc->frame_size = fs_tmp;
1838                             }
1839                             if(ret <= 0) {
1840                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1841                             }
1842                             if (ret < 0) {
1843                                 fprintf(stderr, "Audio encoding failed\n");
1844                                 exit_program(1);
1845                             }
1846                             audio_size += ret;
1847                             pkt.flags |= AV_PKT_FLAG_KEY;
1848                             break;
1849                         case AVMEDIA_TYPE_VIDEO:
1850                             ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1851                             if (ret < 0) {
1852                                 fprintf(stderr, "Video encoding failed\n");
1853                                 exit_program(1);
1854                             }
1855                             video_size += ret;
1856                             if(enc->coded_frame && enc->coded_frame->key_frame)
1857                                 pkt.flags |= AV_PKT_FLAG_KEY;
1858                             if (ost->logfile && enc->stats_out) {
1859                                 fprintf(ost->logfile, "%s", enc->stats_out);
1860                             }
1861                             break;
1862                         default:
1863                             ret=-1;
1864                         }
1865
1866                         if(ret<=0)
1867                             break;
1868                         pkt.data= bit_buffer;
1869                         pkt.size= ret;
1870                         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1871                             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1872                         write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1873                     }
1874                 }
1875             }
1876         }
1877     }
1878
1879     return 0;
1880 }
1881
1882 static void print_sdp(OutputFile *output_files, int n)
1883 {
1884     char sdp[2048];
1885     int i;
1886     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
1887
1888     if (!avc)
1889         exit_program(1);
1890     for (i = 0; i < n; i++)
1891         avc[i] = output_files[i].ctx;
1892
1893     av_sdp_create(avc, n, sdp, sizeof(sdp));
1894     printf("SDP:\n%s\n", sdp);
1895     fflush(stdout);
1896     av_freep(&avc);
1897 }
1898
1899 /*
1900  * The following code is the main loop of the file converter
1901  */
1902 static int transcode(OutputFile *output_files,
1903                      int nb_output_files,
1904                      InputFile *input_files,
1905                      int nb_input_files)
1906 {
1907     int ret = 0, i, j, step;
1908     AVFormatContext *is, *os;
1909     AVCodecContext *codec, *icodec;
1910     OutputStream *ost;
1911     InputStream *ist;
1912     char error[1024];
1913     int key;
1914     int want_sdp = 1;
1915     uint8_t *no_packet;
1916     int no_packet_count=0;
1917     int nb_frame_threshold[AVMEDIA_TYPE_NB]={0};
1918     int nb_streams[AVMEDIA_TYPE_NB]={0};
1919
1920     if (!(no_packet = av_mallocz(nb_input_files)))
1921         exit_program(1);
1922
1923     if (rate_emu)
1924         for (i = 0; i < nb_input_streams; i++)
1925             input_streams[i].start = av_gettime();
1926
1927     /* output stream init */
1928     for(i=0;i<nb_output_files;i++) {
1929         os = output_files[i].ctx;
1930         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1931             av_dump_format(os, i, os->filename, 1);
1932             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
1933             ret = AVERROR(EINVAL);
1934             goto fail;
1935         }
1936     }
1937
1938     /* for each output stream, we compute the right encoding parameters */
1939     for (i = 0; i < nb_output_streams; i++) {
1940         ost = &output_streams[i];
1941         os = output_files[ost->file_index].ctx;
1942         ist = &input_streams[ost->source_index];
1943
1944         codec = ost->st->codec;
1945         icodec = ist->st->codec;
1946
1947         ost->st->disposition = ist->st->disposition;
1948         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
1949         codec->chroma_sample_location = icodec->chroma_sample_location;
1950
1951         if (ost->st->stream_copy) {
1952             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
1953
1954             if (extra_size > INT_MAX)
1955                 goto fail;
1956
1957             /* if stream_copy is selected, no need to decode or encode */
1958             codec->codec_id = icodec->codec_id;
1959             codec->codec_type = icodec->codec_type;
1960
1961             if(!codec->codec_tag){
1962                 if(   !os->oformat->codec_tag
1963                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
1964                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
1965                     codec->codec_tag = icodec->codec_tag;
1966             }
1967
1968             codec->bit_rate = icodec->bit_rate;
1969             codec->rc_max_rate    = icodec->rc_max_rate;
1970             codec->rc_buffer_size = icodec->rc_buffer_size;
1971             codec->extradata= av_mallocz(extra_size);
1972             if (!codec->extradata)
1973                 goto fail;
1974             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
1975             codec->extradata_size= icodec->extradata_size;
1976
1977             codec->time_base = ist->st->time_base;
1978             if(!strcmp(os->oformat->name, "avi")) {
1979                 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){
1980                     codec->time_base = icodec->time_base;
1981                     codec->time_base.num *= icodec->ticks_per_frame;
1982                     codec->time_base.den *= 2;
1983                 }
1984             } else if(!(os->oformat->flags & AVFMT_VARIABLE_FPS)) {
1985                 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){
1986                     codec->time_base = icodec->time_base;
1987                     codec->time_base.num *= icodec->ticks_per_frame;
1988                 }
1989             }
1990             av_reduce(&codec->time_base.num, &codec->time_base.den,
1991                         codec->time_base.num, codec->time_base.den, INT_MAX);
1992
1993             switch(codec->codec_type) {
1994             case AVMEDIA_TYPE_AUDIO:
1995                 if(audio_volume != 256) {
1996                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
1997                     exit_program(1);
1998                 }
1999                 codec->channel_layout = icodec->channel_layout;
2000                 codec->sample_rate = icodec->sample_rate;
2001                 codec->channels = icodec->channels;
2002                 codec->frame_size = icodec->frame_size;
2003                 codec->audio_service_type = icodec->audio_service_type;
2004                 codec->block_align= icodec->block_align;
2005                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2006                     codec->block_align= 0;
2007                 if(codec->codec_id == CODEC_ID_AC3)
2008                     codec->block_align= 0;
2009                 break;
2010             case AVMEDIA_TYPE_VIDEO:
2011                 codec->pix_fmt = icodec->pix_fmt;
2012                 codec->width = icodec->width;
2013                 codec->height = icodec->height;
2014                 codec->has_b_frames = icodec->has_b_frames;
2015                 if (!codec->sample_aspect_ratio.num) {
2016                     codec->sample_aspect_ratio =
2017                     ost->st->sample_aspect_ratio =
2018                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2019                         ist->st->codec->sample_aspect_ratio.num ?
2020                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2021                 }
2022                 break;
2023             case AVMEDIA_TYPE_SUBTITLE:
2024                 codec->width = icodec->width;
2025                 codec->height = icodec->height;
2026                 break;
2027             case AVMEDIA_TYPE_DATA:
2028                 break;
2029             default:
2030                 abort();
2031             }
2032         } else {
2033             if (!ost->enc)
2034                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2035             switch(codec->codec_type) {
2036             case AVMEDIA_TYPE_AUDIO:
2037                 ost->fifo= av_fifo_alloc(1024);
2038                 if(!ost->fifo)
2039                     goto fail;
2040                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2041                 if (!codec->sample_rate) {
2042                     codec->sample_rate = icodec->sample_rate;
2043                 }
2044                 choose_sample_rate(ost->st, ost->enc);
2045                 codec->time_base = (AVRational){1, codec->sample_rate};
2046                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2047                     codec->sample_fmt = icodec->sample_fmt;
2048                 choose_sample_fmt(ost->st, ost->enc);
2049                 if (!codec->channels) {
2050                     codec->channels = icodec->channels;
2051                     codec->channel_layout = icodec->channel_layout;
2052                 }
2053                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2054                     codec->channel_layout = 0;
2055                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2056                 icodec->request_channels = codec->channels;
2057                 ist->decoding_needed = 1;
2058                 ost->encoding_needed = 1;
2059                 ost->resample_sample_fmt  = icodec->sample_fmt;
2060                 ost->resample_sample_rate = icodec->sample_rate;
2061                 ost->resample_channels    = icodec->channels;
2062                 break;
2063             case AVMEDIA_TYPE_VIDEO:
2064                 if (codec->pix_fmt == PIX_FMT_NONE)
2065                     codec->pix_fmt = icodec->pix_fmt;
2066                 choose_pixel_fmt(ost->st, ost->enc);
2067
2068                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2069                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2070                     exit_program(1);
2071                 }
2072
2073                 if (!codec->width || !codec->height) {
2074                     codec->width  = icodec->width;
2075                     codec->height = icodec->height;
2076                 }
2077
2078                 ost->video_resample = codec->width   != icodec->width  ||
2079                                       codec->height  != icodec->height ||
2080                                       codec->pix_fmt != icodec->pix_fmt;
2081                 if (ost->video_resample) {
2082                     codec->bits_per_raw_sample= frame_bits_per_raw_sample;
2083                 }
2084
2085                 ost->resample_height = icodec->height;
2086                 ost->resample_width  = icodec->width;
2087                 ost->resample_pix_fmt= icodec->pix_fmt;
2088                 ost->encoding_needed = 1;
2089                 ist->decoding_needed = 1;
2090
2091                 if (!ost->frame_rate.num)
2092                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2093                 if (ost->enc && ost->enc->supported_framerates && !force_fps) {
2094                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2095                     ost->frame_rate = ost->enc->supported_framerates[idx];
2096                 }
2097                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2098                 if(   av_q2d(codec->time_base) < 0.001 && video_sync_method
2099                    && (video_sync_method==1 || (video_sync_method<0 && !(os->oformat->flags & AVFMT_VARIABLE_FPS)))){
2100                     av_log(os, AV_LOG_WARNING, "Frame rate very high for a muxer not effciciently supporting it.\n"
2101                                                "Please consider specifiying a lower framerate, a different muxer or -vsync 2\n");
2102                 }
2103
2104 #if CONFIG_AVFILTER
2105                 if (configure_video_filters(ist, ost)) {
2106                     fprintf(stderr, "Error opening filters!\n");
2107                     exit(1);
2108                 }
2109 #endif
2110                 break;
2111             case AVMEDIA_TYPE_SUBTITLE:
2112                 ost->encoding_needed = 1;
2113                 ist->decoding_needed = 1;
2114                 break;
2115             default:
2116                 abort();
2117                 break;
2118             }
2119             /* two pass mode */
2120             if (ost->encoding_needed && codec->codec_id != CODEC_ID_H264 &&
2121                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2122                 char logfilename[1024];
2123                 FILE *f;
2124
2125                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2126                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2127                          i);
2128                 if (codec->flags & CODEC_FLAG_PASS1) {
2129                     f = fopen(logfilename, "wb");
2130                     if (!f) {
2131                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2132                         exit_program(1);
2133                     }
2134                     ost->logfile = f;
2135                 } else {
2136                     char  *logbuffer;
2137                     size_t logbuffer_size;
2138                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2139                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2140                         exit_program(1);
2141                     }
2142                     codec->stats_in = logbuffer;
2143                 }
2144             }
2145         }
2146         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2147             /* maximum video buffer size is 6-bytes per pixel, plus DPX header size */
2148             int size= codec->width * codec->height;
2149             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 1664);
2150         }
2151     }
2152
2153     if (!bit_buffer)
2154         bit_buffer = av_malloc(bit_buffer_size);
2155     if (!bit_buffer) {
2156         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2157                 bit_buffer_size);
2158         ret = AVERROR(ENOMEM);
2159         goto fail;
2160     }
2161
2162     /* open each encoder */
2163     for (i = 0; i < nb_output_streams; i++) {
2164         ost = &output_streams[i];
2165         if (ost->encoding_needed) {
2166             AVCodec *codec = ost->enc;
2167             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2168             if (!codec) {
2169                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2170                          ost->st->codec->codec_id, ost->file_index, ost->index);
2171                 ret = AVERROR(EINVAL);
2172                 goto dump_format;
2173             }
2174             if (dec->subtitle_header) {
2175                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2176                 if (!ost->st->codec->subtitle_header) {
2177                     ret = AVERROR(ENOMEM);
2178                     goto dump_format;
2179                 }
2180                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2181                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2182             }
2183             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2184                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2185                         ost->file_index, ost->index);
2186                 ret = AVERROR(EINVAL);
2187                 goto dump_format;
2188             }
2189             assert_codec_experimental(ost->st->codec, 1);
2190             assert_avoptions(ost->opts);
2191             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2192                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2193                                              "It takes bits/s as argument, not kbits/s\n");
2194             extra_size += ost->st->codec->extradata_size;
2195         }
2196     }
2197
2198     /* open each decoder */
2199     for (i = 0; i < nb_input_streams; i++) {
2200         ist = &input_streams[i];
2201         if (ist->decoding_needed) {
2202             AVCodec *codec = ist->dec;
2203             if (!codec)
2204                 codec = avcodec_find_decoder(ist->st->codec->codec_id);
2205             if (!codec) {
2206                 snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
2207                         ist->st->codec->codec_id, ist->file_index, ist->st->index);
2208                 ret = AVERROR(EINVAL);
2209                 goto dump_format;
2210             }
2211
2212             if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2213                 snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
2214                         ist->file_index, ist->st->index);
2215                 ret = AVERROR(EINVAL);
2216                 goto dump_format;
2217             }
2218             assert_codec_experimental(ist->st->codec, 0);
2219             assert_avoptions(ost->opts);
2220         }
2221     }
2222
2223     /* init pts */
2224     for (i = 0; i < nb_input_streams; i++) {
2225         AVStream *st;
2226         ist = &input_streams[i];
2227         st= ist->st;
2228         ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
2229         ist->next_pts = AV_NOPTS_VALUE;
2230         ist->is_start = 1;
2231     }
2232
2233     /* open files and write file headers */
2234     for (i = 0; i < nb_output_files; i++) {
2235         os = output_files[i].ctx;
2236         if (avformat_write_header(os, &output_files[i].opts) < 0) {
2237             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2238             ret = AVERROR(EINVAL);
2239             goto dump_format;
2240         }
2241 //        assert_avoptions(output_files[i].opts);
2242         if (strcmp(os->oformat->name, "rtp")) {
2243             want_sdp = 0;
2244         }
2245     }
2246
2247  dump_format:
2248     /* dump the file output parameters - cannot be done before in case
2249        of stream copy */
2250     for(i=0;i<nb_output_files;i++) {
2251         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2252     }
2253
2254     /* dump the stream mapping */
2255     if (verbose >= 0) {
2256         fprintf(stderr, "Stream mapping:\n");
2257         for (i = 0; i < nb_output_streams;i ++) {
2258             ost = &output_streams[i];
2259             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2260                     input_streams[ost->source_index].file_index,
2261                     input_streams[ost->source_index].st->index,
2262                     ost->file_index,
2263                     ost->index);
2264             if (ost->sync_ist != &input_streams[ost->source_index])
2265                 fprintf(stderr, " [sync #%d.%d]",
2266                         ost->sync_ist->file_index,
2267                         ost->sync_ist->st->index);
2268             if (ost->st->stream_copy)
2269                 fprintf(stderr, " (copy)");
2270             fprintf(stderr, "\n");
2271         }
2272     }
2273
2274     if (ret) {
2275         fprintf(stderr, "%s\n", error);
2276         goto fail;
2277     }
2278
2279     if (want_sdp) {
2280         print_sdp(output_files, nb_output_files);
2281     }
2282
2283     if (!using_stdin) {
2284         if(verbose >= 0)
2285             fprintf(stderr, "Press [q] to stop, [?] for help\n");
2286         avio_set_interrupt_cb(decode_interrupt_cb);
2287     }
2288     term_init();
2289
2290     timer_start = av_gettime();
2291
2292     for(; received_sigterm == 0;) {
2293         int file_index, ist_index;
2294         AVPacket pkt;
2295         int64_t ipts_min;
2296         double opts_min;
2297
2298     redo:
2299         ipts_min = INT64_MAX;
2300         opts_min= 1e100;
2301         /* if 'q' pressed, exits */
2302         if (!using_stdin) {
2303             if (q_pressed)
2304                 break;
2305             /* read_key() returns 0 on EOF */
2306             key = read_key();
2307             if (key == 'q')
2308                 break;
2309             if (key == '+') verbose++;
2310             if (key == '-') verbose--;
2311             if (key == 's') qp_hist     ^= 1;
2312             if (key == 'h'){
2313                 if (do_hex_dump){
2314                     do_hex_dump = do_pkt_dump = 0;
2315                 } else if(do_pkt_dump){
2316                     do_hex_dump = 1;
2317                 } else
2318                     do_pkt_dump = 1;
2319                 av_log_set_level(AV_LOG_DEBUG);
2320             }
2321             if (key == 'd' || key == 'D'){
2322                 int debug=0;
2323                 if(key == 'D') {
2324                     debug = input_streams[0].st->codec->debug<<1;
2325                     if(!debug) debug = 1;
2326                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2327                         debug += debug;
2328                 }else
2329                     scanf("%d", &debug);
2330                 for(i=0;i<nb_input_streams;i++) {
2331                     input_streams[i].st->codec->debug = debug;
2332                 }
2333                 for(i=0;i<nb_output_streams;i++) {
2334                     ost = &output_streams[i];
2335                     ost->st->codec->debug = debug;
2336                 }
2337                 if(debug) av_log_set_level(AV_LOG_DEBUG);
2338                 fprintf(stderr,"debug=%d\n", debug);
2339             }
2340             if (key == '?'){
2341                 fprintf(stderr, "key    function\n"
2342                                 "?      show this help\n"
2343                                 "+      increase verbosity\n"
2344                                 "-      decrease verbosity\n"
2345                                 "D      cycle through available debug modes\n"
2346                                 "h      dump packets/hex press to cycle through the 3 states\n"
2347                                 "q      quit\n"
2348                                 "s      Show QP histogram\n"
2349                 );
2350             }
2351         }
2352
2353         /* select the stream that we must read now by looking at the
2354            smallest output pts */
2355         file_index = -1;
2356         for (i = 0; i < nb_output_streams; i++) {
2357             int64_t ipts;
2358             double  opts;
2359             ost = &output_streams[i];
2360             os = output_files[ost->file_index].ctx;
2361             ist = &input_streams[ost->source_index];
2362             if(ost->is_past_recording_time || no_packet[ist->file_index])
2363                 continue;
2364                 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2365             ipts = ist->pts;
2366             if (!input_files[ist->file_index].eof_reached){
2367                 if(ipts < ipts_min) {
2368                     ipts_min = ipts;
2369                     if(input_sync ) file_index = ist->file_index;
2370                 }
2371                 if(opts < opts_min) {
2372                     opts_min = opts;
2373                     if(!input_sync) file_index = ist->file_index;
2374                 }
2375             }
2376             if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
2377                 file_index= -1;
2378                 break;
2379             }
2380         }
2381         /* if none, if is finished */
2382         if (file_index < 0) {
2383             if(no_packet_count){
2384                 no_packet_count=0;
2385                 memset(no_packet, 0, nb_input_files);
2386                 usleep(10000);
2387                 continue;
2388             }
2389             break;
2390         }
2391
2392         /* finish if limit size exhausted */
2393         if (limit_filesize != 0 && limit_filesize <= avio_tell(output_files[0].ctx->pb))
2394             break;
2395
2396         /* read a frame from it and output it in the fifo */
2397         is = input_files[file_index].ctx;
2398         ret= av_read_frame(is, &pkt);
2399         if(ret == AVERROR(EAGAIN)){
2400             no_packet[file_index]=1;
2401             no_packet_count++;
2402             continue;
2403         }
2404         if (ret < 0) {
2405             input_files[file_index].eof_reached = 1;
2406             if (opt_shortest)
2407                 break;
2408             else
2409                 continue;
2410         }
2411
2412         no_packet_count=0;
2413         memset(no_packet, 0, nb_input_files);
2414
2415         if (do_pkt_dump) {
2416             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2417                              is->streams[pkt.stream_index]);
2418         }
2419         /* the following test is needed in case new streams appear
2420            dynamically in stream : we ignore them */
2421         if (pkt.stream_index >= input_files[file_index].nb_streams)
2422             goto discard_packet;
2423         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2424         ist = &input_streams[ist_index];
2425         if (ist->discard)
2426             goto discard_packet;
2427
2428         if (pkt.dts != AV_NOPTS_VALUE)
2429             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2430         if (pkt.pts != AV_NOPTS_VALUE)
2431             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2432
2433         if (ist->ts_scale) {
2434             if(pkt.pts != AV_NOPTS_VALUE)
2435                 pkt.pts *= ist->ts_scale;
2436             if(pkt.dts != AV_NOPTS_VALUE)
2437                 pkt.dts *= ist->ts_scale;
2438         }
2439
2440 //        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);
2441         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2442             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2443             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2444             int64_t delta= pkt_dts - ist->next_pts;
2445             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2446                 input_files[ist->file_index].ts_offset -= delta;
2447                 if (verbose > 2)
2448                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2449                             delta, input_files[ist->file_index].ts_offset);
2450                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2451                 if(pkt.pts != AV_NOPTS_VALUE)
2452                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2453             }
2454         }
2455
2456         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2457         if (output_packet(ist, ist_index, output_streams, nb_output_streams, &pkt) < 0) {
2458
2459             if (verbose >= 0)
2460                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2461                         ist->file_index, ist->st->index);
2462             if (exit_on_error)
2463                 exit_program(1);
2464             av_free_packet(&pkt);
2465             goto redo;
2466         }
2467
2468     discard_packet:
2469         av_free_packet(&pkt);
2470
2471         /* dump report by using the output first video and audio streams */
2472         print_report(output_files, output_streams, nb_output_streams, 0);
2473     }
2474
2475     /* at the end of stream, we must flush the decoder buffers */
2476     for (i = 0; i < nb_input_streams; i++) {
2477         ist = &input_streams[i];
2478         if (ist->decoding_needed) {
2479             output_packet(ist, i, output_streams, nb_output_streams, NULL);
2480         }
2481     }
2482
2483     term_exit();
2484
2485     /* write the trailer if needed and close file */
2486     for(i=0;i<nb_output_files;i++) {
2487         os = output_files[i].ctx;
2488         av_write_trailer(os);
2489     }
2490
2491     /* dump report by using the first video and audio streams */
2492     print_report(output_files, output_streams, nb_output_streams, 1);
2493
2494     /* close each encoder */
2495     for (i = 0; i < nb_output_streams; i++) {
2496         ost = &output_streams[i];
2497         if (ost->encoding_needed) {
2498             av_freep(&ost->st->codec->stats_in);
2499             avcodec_close(ost->st->codec);
2500         }
2501 #if CONFIG_AVFILTER
2502         avfilter_graph_free(&ost->graph);
2503 #endif
2504     }
2505
2506     /* close each decoder */
2507     for (i = 0; i < nb_input_streams; i++) {
2508         ist = &input_streams[i];
2509         if (ist->decoding_needed) {
2510             avcodec_close(ist->st->codec);
2511         }
2512     }
2513
2514     /* finished ! */
2515     ret = 0;
2516
2517  fail:
2518     av_freep(&bit_buffer);
2519     av_freep(&no_packet);
2520
2521     if (output_streams) {
2522         for (i = 0; i < nb_output_streams; i++) {
2523             ost = &output_streams[i];
2524             if (ost) {
2525                 if (ost->st->stream_copy)
2526                     av_freep(&ost->st->codec->extradata);
2527                 if (ost->logfile) {
2528                     fclose(ost->logfile);
2529                     ost->logfile = NULL;
2530                 }
2531                 av_fifo_free(ost->fifo); /* works even if fifo is not
2532                                              initialized but set to zero */
2533                 av_freep(&ost->st->codec->subtitle_header);
2534                 av_free(ost->resample_frame.data[0]);
2535                 av_free(ost->forced_kf_pts);
2536                 if (ost->video_resample)
2537                     sws_freeContext(ost->img_resample_ctx);
2538                 if (ost->resample)
2539                     audio_resample_close(ost->resample);
2540                 if (ost->reformat_ctx)
2541                     av_audio_convert_free(ost->reformat_ctx);
2542                 av_dict_free(&ost->opts);
2543             }
2544         }
2545     }
2546     return ret;
2547 }
2548
2549 static int opt_format(const char *opt, const char *arg)
2550 {
2551     last_asked_format = arg;
2552     return 0;
2553 }
2554
2555 static int opt_video_rc_override_string(const char *opt, const char *arg)
2556 {
2557     video_rc_override_string = arg;
2558     return 0;
2559 }
2560
2561 static int opt_me_threshold(const char *opt, const char *arg)
2562 {
2563     me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2564     return 0;
2565 }
2566
2567 static int opt_verbose(const char *opt, const char *arg)
2568 {
2569     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2570     return 0;
2571 }
2572
2573 static int opt_frame_rate(const char *opt, const char *arg)
2574 {
2575     if (av_parse_video_rate(&frame_rate, arg) < 0) {
2576         fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2577         exit_program(1);
2578     }
2579     return 0;
2580 }
2581
2582 static int opt_frame_crop(const char *opt, const char *arg)
2583 {
2584     fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
2585     return AVERROR(EINVAL);
2586 }
2587
2588 static int opt_frame_size(const char *opt, const char *arg)
2589 {
2590     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2591         fprintf(stderr, "Incorrect frame size\n");
2592         return AVERROR(EINVAL);
2593     }
2594     return 0;
2595 }
2596
2597 static int opt_pad(const char *opt, const char *arg) {
2598     fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2599     return -1;
2600 }
2601
2602 static int opt_frame_pix_fmt(const char *opt, const char *arg)
2603 {
2604     if (strcmp(arg, "list")) {
2605         frame_pix_fmt = av_get_pix_fmt(arg);
2606         if (frame_pix_fmt == PIX_FMT_NONE) {
2607             fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2608             return AVERROR(EINVAL);
2609         }
2610     } else {
2611         opt_pix_fmts(NULL, NULL);
2612         exit_program(0);
2613     }
2614     return 0;
2615 }
2616
2617 static int opt_frame_aspect_ratio(const char *opt, const char *arg)
2618 {
2619     int x = 0, y = 0;
2620     double ar = 0;
2621     const char *p;
2622     char *end;
2623
2624     p = strchr(arg, ':');
2625     if (p) {
2626         x = strtol(arg, &end, 10);
2627         if (end == p)
2628             y = strtol(end+1, &end, 10);
2629         if (x > 0 && y > 0)
2630             ar = (double)x / (double)y;
2631     } else
2632         ar = strtod(arg, NULL);
2633
2634     if (!ar) {
2635         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2636         return AVERROR(EINVAL);
2637     }
2638     frame_aspect_ratio = ar;
2639     return 0;
2640 }
2641
2642 static int opt_metadata(const char *opt, const char *arg)
2643 {
2644     char *mid= strchr(arg, '=');
2645
2646     if(!mid){
2647         fprintf(stderr, "Missing =\n");
2648         exit_program(1);
2649     }
2650     *mid++= 0;
2651
2652     av_dict_set(&metadata, arg, mid, 0);
2653
2654     return 0;
2655 }
2656
2657 static int opt_qscale(const char *opt, const char *arg)
2658 {
2659     video_qscale = parse_number_or_die(opt, arg, OPT_FLOAT, 0, 255);
2660     if (video_qscale <= 0 || video_qscale > 255) {
2661         fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2662         return AVERROR(EINVAL);
2663     }
2664     return 0;
2665 }
2666
2667 static int opt_top_field_first(const char *opt, const char *arg)
2668 {
2669     top_field_first = parse_number_or_die(opt, arg, OPT_INT, 0, 1);
2670     return opt_default(opt, arg);
2671 }
2672
2673 static int opt_thread_count(const char *opt, const char *arg)
2674 {
2675     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2676 #if !HAVE_THREADS
2677     if (verbose >= 0)
2678         fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2679 #endif
2680     return 0;
2681 }
2682
2683 static int opt_audio_sample_fmt(const char *opt, const char *arg)
2684 {
2685     if (strcmp(arg, "list")) {
2686         audio_sample_fmt = av_get_sample_fmt(arg);
2687         if (audio_sample_fmt == AV_SAMPLE_FMT_NONE) {
2688             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg);
2689             return AVERROR(EINVAL);
2690         }
2691     } else {
2692         int i;
2693         char fmt_str[128];
2694         for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
2695             printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
2696         exit_program(0);
2697     }
2698     return 0;
2699 }
2700
2701 static int opt_audio_rate(const char *opt, const char *arg)
2702 {
2703     audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2704     return 0;
2705 }
2706
2707 static int opt_audio_channels(const char *opt, const char *arg)
2708 {
2709     audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2710     return 0;
2711 }
2712
2713 static int opt_codec(const char *opt, const char *arg)
2714 {
2715     return av_dict_set(&codec_names, opt, arg, 0);
2716 }
2717
2718 static int opt_audio_codec(const char *opt, const char *arg)
2719 {
2720     return opt_codec("codec:a", arg);
2721 }
2722
2723 static int opt_video_codec(const char *opt, const char *arg)
2724 {
2725     return opt_codec("codec:v", arg);
2726 }
2727
2728 static int opt_subtitle_codec(const char *opt, const char *arg)
2729 {
2730     return opt_codec("codec:s", arg);
2731 }
2732
2733 static int opt_data_codec(const char *opt, const char *arg)
2734 {
2735     return opt_codec("codec:d", arg);
2736 }
2737
2738 static int opt_codec_tag(const char *opt, const char *arg)
2739 {
2740     char *tail;
2741     uint32_t *codec_tag;
2742
2743     codec_tag = !strcmp(opt, "atag") ? &audio_codec_tag :
2744                 !strcmp(opt, "vtag") ? &video_codec_tag :
2745                 !strcmp(opt, "stag") ? &subtitle_codec_tag : NULL;
2746     if (!codec_tag)
2747         return -1;
2748
2749     *codec_tag = strtol(arg, &tail, 0);
2750     if (!tail || *tail)
2751         *codec_tag = AV_RL32(arg);
2752
2753     return 0;
2754 }
2755
2756 static int opt_map(const char *opt, const char *arg)
2757 {
2758     StreamMap *m = NULL;
2759     int i, negative = 0, file_idx;
2760     int sync_file_idx = -1, sync_stream_idx;
2761     char *p, *sync;
2762     char *map;
2763
2764     if (*arg == '-') {
2765         negative = 1;
2766         arg++;
2767     }
2768     map = av_strdup(arg);
2769
2770     /* parse sync stream first, just pick first matching stream */
2771     if (sync = strchr(map, ',')) {
2772         *sync = 0;
2773         sync_file_idx = strtol(sync + 1, &sync, 0);
2774         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2775             av_log(NULL, AV_LOG_ERROR, "Invalid sync file index: %d.\n", sync_file_idx);
2776             exit_program(1);
2777         }
2778         if (*sync)
2779             sync++;
2780         for (i = 0; i < input_files[sync_file_idx].ctx->nb_streams; i++)
2781             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2782                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2783                 sync_stream_idx = i;
2784                 break;
2785             }
2786         if (i == input_files[sync_file_idx].ctx->nb_streams) {
2787             av_log(NULL, AV_LOG_ERROR, "Sync stream specification in map %s does not "
2788                                        "match any streams.\n", arg);
2789             exit_program(1);
2790         }
2791     }
2792
2793
2794     file_idx = strtol(map, &p, 0);
2795     if (file_idx >= nb_input_files || file_idx < 0) {
2796         av_log(NULL, AV_LOG_ERROR, "Invalid input file index: %d.\n", file_idx);
2797         exit_program(1);
2798     }
2799     if (negative)
2800         /* disable some already defined maps */
2801         for (i = 0; i < nb_stream_maps; i++) {
2802             m = &stream_maps[i];
2803             if (check_stream_specifier(input_files[m->file_index].ctx,
2804                                        input_files[m->file_index].ctx->streams[m->stream_index],
2805                                        *p == ':' ? p + 1 : p) > 0)
2806                 m->disabled = 1;
2807         }
2808     else
2809         for (i = 0; i < input_files[file_idx].ctx->nb_streams; i++) {
2810             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2811                         *p == ':' ? p + 1 : p) <= 0)
2812                 continue;
2813             stream_maps = grow_array(stream_maps, sizeof(*stream_maps), &nb_stream_maps, nb_stream_maps + 1);
2814             m = &stream_maps[nb_stream_maps - 1];
2815
2816             m->file_index   = file_idx;
2817             m->stream_index = i;
2818
2819             if (sync_file_idx >= 0) {
2820                 m->sync_file_index   = sync_file_idx;
2821                 m->sync_stream_index = sync_stream_idx;
2822             } else {
2823                 m->sync_file_index   = file_idx;
2824                 m->sync_stream_index = i;
2825             }
2826         }
2827
2828     if (!m) {
2829         av_log(NULL, AV_LOG_ERROR, "Stream map '%s' matches no streams.\n", arg);
2830         exit_program(1);
2831     }
2832
2833     av_freep(&map);
2834     return 0;
2835 }
2836
2837 static void parse_meta_type(char *arg, char *type, int *index)
2838 {
2839     if (*arg == ':') {
2840         *type = *(++arg);
2841         switch (*arg) {
2842         case 'g':
2843             break;
2844         case 's':
2845         case 'c':
2846         case 'p':
2847             if (*(++arg) == ':')
2848                 *index = strtol(++arg, NULL, 0);
2849             break;
2850         default:
2851             fprintf(stderr, "Invalid metadata type %c.\n", *arg);
2852             exit_program(1);
2853         }
2854     } else
2855         *type = 'g';
2856 }
2857
2858 static int opt_map_metadata(const char *opt, const char *arg)
2859 {
2860     MetadataMap *m, *m1;
2861     char *p;
2862
2863     meta_data_maps = grow_array(meta_data_maps, sizeof(*meta_data_maps),
2864                                 &nb_meta_data_maps, nb_meta_data_maps + 1);
2865
2866     m = &meta_data_maps[nb_meta_data_maps - 1][1];
2867     m->file = strtol(arg, &p, 0);
2868     parse_meta_type(p, &m->type, &m->index);
2869
2870     m1 = &meta_data_maps[nb_meta_data_maps - 1][0];
2871     if (p = strchr(opt, ':'))
2872         parse_meta_type(p, &m1->type, &m1->index);
2873     else
2874         m1->type = 'g';
2875
2876     if (m->type == 'g' || m1->type == 'g')
2877         metadata_global_autocopy = 0;
2878     if (m->type == 's' || m1->type == 's')
2879         metadata_streams_autocopy = 0;
2880     if (m->type == 'c' || m1->type == 'c')
2881         metadata_chapters_autocopy = 0;
2882
2883     return 0;
2884 }
2885
2886 static int opt_input_ts_scale(const char *opt, const char *arg)
2887 {
2888     return av_dict_set(&ts_scale, opt, arg, 0);
2889 }
2890
2891 static int opt_recording_time(const char *opt, const char *arg)
2892 {
2893     recording_time = parse_time_or_die(opt, arg, 1);
2894     return 0;
2895 }
2896
2897 static int opt_start_time(const char *opt, const char *arg)
2898 {
2899     start_time = parse_time_or_die(opt, arg, 1);
2900     return 0;
2901 }
2902
2903 static int opt_input_ts_offset(const char *opt, const char *arg)
2904 {
2905     input_ts_offset = parse_time_or_die(opt, arg, 1);
2906     return 0;
2907 }
2908
2909 static enum CodecID find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
2910 {
2911     const char *codec_string = encoder ? "encoder" : "decoder";
2912     AVCodec *codec;
2913
2914     if(!name)
2915         return CODEC_ID_NONE;
2916     codec = encoder ?
2917         avcodec_find_encoder_by_name(name) :
2918         avcodec_find_decoder_by_name(name);
2919     if(!codec) {
2920         av_log(NULL, AV_LOG_ERROR, "Unknown %s '%s'\n", codec_string, name);
2921         exit_program(1);
2922     }
2923     if(codec->type != type) {
2924         av_log(NULL, AV_LOG_ERROR, "Invalid %s type '%s'\n", codec_string, name);
2925         exit_program(1);
2926     }
2927     return codec->id;
2928 }
2929
2930 static AVCodec *choose_codec(AVFormatContext *s, AVStream *st, enum AVMediaType type, AVDictionary *codec_names)
2931 {
2932     AVDictionaryEntry *e = NULL;
2933     char *codec_name = NULL;
2934     int ret;
2935
2936     while (e = av_dict_get(codec_names, "", e, AV_DICT_IGNORE_SUFFIX)) {
2937         char *p = strchr(e->key, ':');
2938
2939         if ((ret = check_stream_specifier(s, st, p ? p + 1 : "")) > 0)
2940             codec_name = e->value;
2941         else if (ret < 0)
2942             exit_program(1);
2943     }
2944
2945     if (!codec_name) {
2946         if (s->oformat) {
2947             st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename, NULL, type);
2948             return avcodec_find_encoder(st->codec->codec_id);
2949         }
2950     } else if (!strcmp(codec_name, "copy"))
2951         st->stream_copy = 1;
2952     else {
2953         st->codec->codec_id = find_codec_or_die(codec_name, type, s->iformat == NULL);
2954         return s->oformat ? avcodec_find_encoder_by_name(codec_name) :
2955                             avcodec_find_decoder_by_name(codec_name);
2956     }
2957
2958     return NULL;
2959 }
2960
2961 /**
2962  * Add all the streams from the given input file to the global
2963  * list of input streams.
2964  */
2965 static void add_input_streams(AVFormatContext *ic)
2966 {
2967     int i, rfps, rfps_base, ret;
2968
2969     for (i = 0; i < ic->nb_streams; i++) {
2970         AVStream *st = ic->streams[i];
2971         AVCodecContext *dec = st->codec;
2972         AVDictionaryEntry *e = NULL;
2973         InputStream *ist;
2974         char *scale = NULL;
2975
2976         dec->thread_count = thread_count;
2977
2978         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
2979         ist = &input_streams[nb_input_streams - 1];
2980         ist->st = st;
2981         ist->file_index = nb_input_files;
2982         ist->discard = 1;
2983         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
2984
2985         while (e = av_dict_get(ts_scale, "", e, AV_DICT_IGNORE_SUFFIX)) {
2986             char *p = strchr(e->key, ':');
2987
2988             if ((ret = check_stream_specifier(ic, st, p ? p + 1 : "")) > 0)
2989                 scale = e->value;
2990             else if (ret < 0)
2991                 exit_program(1);
2992         }
2993         if (scale)
2994             ist->ts_scale = strtod(scale, NULL);
2995
2996         ist->dec = choose_codec(ic, st, dec->codec_type, codec_names);
2997
2998         switch (dec->codec_type) {
2999         case AVMEDIA_TYPE_AUDIO:
3000             if(!ist->dec)
3001                 ist->dec = avcodec_find_decoder(dec->codec_id);
3002             if(audio_disable)
3003                 st->discard= AVDISCARD_ALL;
3004             break;
3005         case AVMEDIA_TYPE_VIDEO:
3006             if(!ist->dec)
3007                 ist->dec = avcodec_find_decoder(dec->codec_id);
3008             rfps      = ic->streams[i]->r_frame_rate.num;
3009             rfps_base = ic->streams[i]->r_frame_rate.den;
3010             if (dec->lowres) {
3011                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3012             }
3013             if(me_threshold)
3014                 dec->debug |= FF_DEBUG_MV;
3015
3016             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3017
3018                 if (verbose >= 0)
3019                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3020                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3021
3022                     (float)rfps / rfps_base, rfps, rfps_base);
3023             }
3024
3025             if(video_disable)
3026                 st->discard= AVDISCARD_ALL;
3027             else if(video_discard)
3028                 st->discard= video_discard;
3029             break;
3030         case AVMEDIA_TYPE_DATA:
3031             break;
3032         case AVMEDIA_TYPE_SUBTITLE:
3033             if(!ist->dec)
3034                 ist->dec = avcodec_find_decoder(dec->codec_id);
3035             if(subtitle_disable)
3036                 st->discard = AVDISCARD_ALL;
3037             break;
3038         case AVMEDIA_TYPE_ATTACHMENT:
3039         case AVMEDIA_TYPE_UNKNOWN:
3040             break;
3041         default:
3042             abort();
3043         }
3044     }
3045 }
3046
3047 static int opt_input_file(const char *opt, const char *filename)
3048 {
3049     AVFormatContext *ic;
3050     AVInputFormat *file_iformat = NULL;
3051     int err, i, ret;
3052     int64_t timestamp;
3053     uint8_t buf[128];
3054     AVDictionary **opts;
3055     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
3056
3057     if (last_asked_format) {
3058         if (!(file_iformat = av_find_input_format(last_asked_format))) {
3059             fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
3060             exit_program(1);
3061         }
3062         last_asked_format = NULL;
3063     }
3064
3065     if (!strcmp(filename, "-"))
3066         filename = "pipe:";
3067
3068     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3069                     !strcmp(filename, "/dev/stdin");
3070
3071     /* get default parameters from command line */
3072     ic = avformat_alloc_context();
3073     if (!ic) {
3074         print_error(filename, AVERROR(ENOMEM));
3075         exit_program(1);
3076     }
3077     if (audio_sample_rate) {
3078         snprintf(buf, sizeof(buf), "%d", audio_sample_rate);
3079         av_dict_set(&format_opts, "sample_rate", buf, 0);
3080     }
3081     if (audio_channels) {
3082         snprintf(buf, sizeof(buf), "%d", audio_channels);
3083         av_dict_set(&format_opts, "channels", buf, 0);
3084     }
3085     if (frame_rate.num) {
3086         snprintf(buf, sizeof(buf), "%d/%d", frame_rate.num, frame_rate.den);
3087         av_dict_set(&format_opts, "framerate", buf, 0);
3088     }
3089     if (frame_width && frame_height) {
3090         snprintf(buf, sizeof(buf), "%dx%d", frame_width, frame_height);
3091         av_dict_set(&format_opts, "video_size", buf, 0);
3092     }
3093     if (frame_pix_fmt != PIX_FMT_NONE)
3094         av_dict_set(&format_opts, "pixel_format", av_get_pix_fmt_name(frame_pix_fmt), 0);
3095
3096     ic->flags |= AVFMT_FLAG_NONBLOCK;
3097
3098     /* open the input file with generic libav function */
3099     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3100     if (err < 0) {
3101         print_error(filename, err);
3102         exit_program(1);
3103     }
3104     assert_avoptions(format_opts);
3105
3106     if(opt_programid) {
3107         int i, j;
3108         int found=0;
3109         for(i=0; i<ic->nb_streams; i++){
3110             ic->streams[i]->discard= AVDISCARD_ALL;
3111         }
3112         for(i=0; i<ic->nb_programs; i++){
3113             AVProgram *p= ic->programs[i];
3114             if(p->id != opt_programid){
3115                 p->discard = AVDISCARD_ALL;
3116             }else{
3117                 found=1;
3118                 for(j=0; j<p->nb_stream_indexes; j++){
3119                     ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
3120                 }
3121             }
3122         }
3123         if(!found){
3124             fprintf(stderr, "Specified program id not found\n");
3125             exit_program(1);
3126         }
3127         opt_programid=0;
3128     }
3129
3130     /* apply forced codec ids */
3131     for (i = 0; i < ic->nb_streams; i++)
3132         choose_codec(ic, ic->streams[i], ic->streams[i]->codec->codec_type, codec_names);
3133
3134     /* Set AVCodecContext options for avformat_find_stream_info */
3135     opts = setup_find_stream_info_opts(ic, codec_opts);
3136     orig_nb_streams = ic->nb_streams;
3137
3138     /* If not enough info to get the stream parameters, we decode the
3139        first frames to get it. (used in mpeg case for example) */
3140     ret = avformat_find_stream_info(ic, opts);
3141     if (ret < 0 && verbose >= 0) {
3142         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3143         av_close_input_file(ic);
3144         exit_program(1);
3145     }
3146
3147     timestamp = start_time;
3148     /* add the stream start time */
3149     if (ic->start_time != AV_NOPTS_VALUE)
3150         timestamp += ic->start_time;
3151
3152     /* if seeking requested, we execute it */
3153     if (start_time != 0) {
3154         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3155         if (ret < 0) {
3156             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3157                     filename, (double)timestamp / AV_TIME_BASE);
3158         }
3159         /* reset seek info */
3160         start_time = 0;
3161     }
3162
3163     /* update the current parameters so that they match the one of the input stream */
3164     add_input_streams(ic);
3165
3166     /* dump the file content */
3167     if (verbose >= 0)
3168         av_dump_format(ic, nb_input_files, filename, 0);
3169
3170     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3171     input_files[nb_input_files - 1].ctx        = ic;
3172     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3173     input_files[nb_input_files - 1].ts_offset  = input_ts_offset - (copy_ts ? 0 : timestamp);
3174     input_files[nb_input_files - 1].nb_streams = ic->nb_streams;
3175
3176     top_field_first = -1;
3177     frame_rate    = (AVRational){0, 0};
3178     frame_pix_fmt = PIX_FMT_NONE;
3179     frame_height = 0;
3180     frame_width  = 0;
3181     audio_sample_rate = 0;
3182     audio_channels    = 0;
3183     audio_sample_fmt  = AV_SAMPLE_FMT_NONE;
3184     av_dict_free(&ts_scale);
3185
3186     for (i = 0; i < orig_nb_streams; i++)
3187         av_dict_free(&opts[i]);
3188     av_freep(&opts);
3189     av_dict_free(&codec_names);
3190     uninit_opts();
3191     init_opts();
3192     return 0;
3193 }
3194
3195 static void parse_forced_key_frames(char *kf, OutputStream *ost,
3196                                     AVCodecContext *avctx)
3197 {
3198     char *p;
3199     int n = 1, i;
3200     int64_t t;
3201
3202     for (p = kf; *p; p++)
3203         if (*p == ',')
3204             n++;
3205     ost->forced_kf_count = n;
3206     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
3207     if (!ost->forced_kf_pts) {
3208         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
3209         exit_program(1);
3210     }
3211     for (i = 0; i < n; i++) {
3212         p = i ? strchr(p, ',') + 1 : kf;
3213         t = parse_time_or_die("force_key_frames", p, 1);
3214         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
3215     }
3216 }
3217
3218 static OutputStream *new_output_stream(AVFormatContext *oc, enum AVMediaType type)
3219 {
3220     OutputStream *ost;
3221     AVStream *st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3222     int idx      = oc->nb_streams - 1;
3223
3224     if (!st) {
3225         av_log(NULL, AV_LOG_ERROR, "Could not alloc stream.\n");
3226         exit_program(1);
3227     }
3228
3229     output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
3230                                 nb_output_streams + 1);
3231     ost = &output_streams[nb_output_streams - 1];
3232     ost->file_index = nb_output_files;
3233     ost->index = idx;
3234     ost->st    = st;
3235     st->codec->codec_type = type;
3236     ost->enc = choose_codec(oc, st, type, codec_names);
3237     if (ost->enc) {
3238         ost->opts  = filter_codec_opts(codec_opts, ost->enc->id, oc, st);
3239     }
3240
3241     avcodec_get_context_defaults3(st->codec, ost->enc);
3242     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
3243
3244     ost->sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
3245     return ost;
3246 }
3247
3248 static OutputStream *new_video_stream(AVFormatContext *oc)
3249 {
3250     AVStream *st;
3251     OutputStream *ost;
3252     AVCodecContext *video_enc;
3253
3254     ost = new_output_stream(oc, AVMEDIA_TYPE_VIDEO);
3255     st  = ost->st;
3256     if (!st->stream_copy) {
3257         ost->frame_aspect_ratio = frame_aspect_ratio;
3258         frame_aspect_ratio = 0;
3259 #if CONFIG_AVFILTER
3260         ost->avfilter = vfilters;
3261         vfilters = NULL;
3262 #endif
3263     }
3264
3265     ost->bitstream_filters = video_bitstream_filters;
3266     video_bitstream_filters= NULL;
3267
3268     st->codec->thread_count= thread_count;
3269
3270     video_enc = st->codec;
3271
3272     if(video_codec_tag)
3273         video_enc->codec_tag= video_codec_tag;
3274
3275     if(oc->oformat->flags & AVFMT_GLOBALHEADER) {
3276         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3277     }
3278
3279     if (st->stream_copy) {
3280         video_enc->sample_aspect_ratio =
3281         st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3282     } else {
3283         const char *p;
3284         int i;
3285
3286         if (frame_rate.num)
3287             ost->frame_rate = frame_rate;
3288
3289         video_enc->width = frame_width;
3290         video_enc->height = frame_height;
3291         video_enc->pix_fmt = frame_pix_fmt;
3292         video_enc->bits_per_raw_sample = frame_bits_per_raw_sample;
3293         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3294
3295         if (intra_only)
3296             video_enc->gop_size = 0;
3297         if (video_qscale || same_quant) {
3298             video_enc->flags |= CODEC_FLAG_QSCALE;
3299             video_enc->global_quality = FF_QP2LAMBDA * video_qscale;
3300         }
3301
3302         if(intra_matrix)
3303             video_enc->intra_matrix = intra_matrix;
3304         if(inter_matrix)
3305             video_enc->inter_matrix = inter_matrix;
3306
3307         p= video_rc_override_string;
3308         for(i=0; p; i++){
3309             int start, end, q;
3310             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3311             if(e!=3){
3312                 fprintf(stderr, "error parsing rc_override\n");
3313                 exit_program(1);
3314             }
3315             video_enc->rc_override=
3316                 av_realloc(video_enc->rc_override,
3317                            sizeof(RcOverride)*(i+1));
3318             video_enc->rc_override[i].start_frame= start;
3319             video_enc->rc_override[i].end_frame  = end;
3320             if(q>0){
3321                 video_enc->rc_override[i].qscale= q;
3322                 video_enc->rc_override[i].quality_factor= 1.0;
3323             }
3324             else{
3325                 video_enc->rc_override[i].qscale= 0;
3326                 video_enc->rc_override[i].quality_factor= -q/100.0;
3327             }
3328             p= strchr(p, '/');
3329             if(p) p++;
3330         }
3331         video_enc->rc_override_count=i;
3332         if (!video_enc->rc_initial_buffer_occupancy)
3333             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3334         video_enc->me_threshold= me_threshold;
3335         video_enc->intra_dc_precision= intra_dc_precision - 8;
3336
3337         if (do_psnr)
3338             video_enc->flags|= CODEC_FLAG_PSNR;
3339
3340         /* two pass mode */
3341         if (do_pass) {
3342             if (do_pass == 1) {
3343                 video_enc->flags |= CODEC_FLAG_PASS1;
3344             } else {
3345                 video_enc->flags |= CODEC_FLAG_PASS2;
3346             }
3347         }
3348
3349         if (forced_key_frames)
3350             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3351     }
3352     if (video_language) {
3353         av_dict_set(&st->metadata, "language", video_language, 0);
3354         av_freep(&video_language);
3355     }
3356
3357     /* reset some key parameters */
3358     video_disable = 0;
3359     av_freep(&forced_key_frames);
3360     frame_pix_fmt = PIX_FMT_NONE;
3361     return ost;
3362 }
3363
3364 static OutputStream *new_audio_stream(AVFormatContext *oc)
3365 {
3366     AVStream *st;
3367     OutputStream *ost;
3368     AVCodecContext *audio_enc;
3369
3370     ost = new_output_stream(oc, AVMEDIA_TYPE_AUDIO);
3371     st  = ost->st;
3372
3373     ost->bitstream_filters = audio_bitstream_filters;
3374     audio_bitstream_filters= NULL;
3375
3376     st->codec->thread_count= thread_count;
3377
3378     audio_enc = st->codec;
3379     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3380
3381     if(audio_codec_tag)
3382         audio_enc->codec_tag= audio_codec_tag;
3383
3384     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3385         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3386     }
3387     if (!st->stream_copy) {
3388         if (audio_qscale > QSCALE_NONE) {
3389             audio_enc->flags |= CODEC_FLAG_QSCALE;
3390             audio_enc->global_quality = FF_QP2LAMBDA * audio_qscale;
3391         }
3392         if (audio_channels)
3393             audio_enc->channels = audio_channels;
3394         if (audio_sample_fmt != AV_SAMPLE_FMT_NONE)
3395             audio_enc->sample_fmt = audio_sample_fmt;
3396         if (audio_sample_rate)
3397             audio_enc->sample_rate = audio_sample_rate;
3398     }
3399     if (audio_language) {
3400         av_dict_set(&st->metadata, "language", audio_language, 0);
3401         av_freep(&audio_language);
3402     }
3403
3404     /* reset some key parameters */
3405     audio_disable = 0;
3406
3407     return ost;
3408 }
3409
3410 static OutputStream *new_data_stream(AVFormatContext *oc)
3411 {
3412     AVStream *st;
3413     OutputStream *ost;
3414     AVCodecContext *data_enc;
3415
3416     ost = new_output_stream(oc, AVMEDIA_TYPE_DATA);
3417     st  = ost->st;
3418     data_enc = st->codec;
3419     if (!st->stream_copy) {
3420         fprintf(stderr, "Data stream encoding not supported yet (only streamcopy)\n");
3421         exit_program(1);
3422     }
3423
3424     if (data_codec_tag)
3425         data_enc->codec_tag= data_codec_tag;
3426
3427     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3428         data_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3429     }
3430
3431     data_disable = 0;
3432     return ost;
3433 }
3434
3435 static OutputStream *new_subtitle_stream(AVFormatContext *oc)
3436 {
3437     AVStream *st;
3438     OutputStream *ost;
3439     AVCodecContext *subtitle_enc;
3440
3441     ost = new_output_stream(oc, AVMEDIA_TYPE_SUBTITLE);
3442     st  = ost->st;
3443     subtitle_enc = st->codec;
3444
3445     ost->bitstream_filters = subtitle_bitstream_filters;
3446     subtitle_bitstream_filters= NULL;
3447
3448     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3449
3450     if(subtitle_codec_tag)
3451         subtitle_enc->codec_tag= subtitle_codec_tag;
3452
3453     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3454         subtitle_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3455     }
3456
3457     if (subtitle_language) {
3458         av_dict_set(&st->metadata, "language", subtitle_language, 0);
3459         av_freep(&subtitle_language);
3460     }
3461
3462     subtitle_disable = 0;
3463     return ost;
3464 }
3465
3466 /* arg format is "output-stream-index:streamid-value". */
3467 static int opt_streamid(const char *opt, const char *arg)
3468 {
3469     int idx;
3470     char *p;
3471     char idx_str[16];
3472
3473     av_strlcpy(idx_str, arg, sizeof(idx_str));
3474     p = strchr(idx_str, ':');
3475     if (!p) {
3476         fprintf(stderr,
3477                 "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3478                 arg, opt);
3479         exit_program(1);
3480     }
3481     *p++ = '\0';
3482     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, MAX_STREAMS-1);
3483     streamid_map = grow_array(streamid_map, sizeof(*streamid_map), &nb_streamid_map, idx+1);
3484     streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3485     return 0;
3486 }
3487
3488 static int copy_chapters(int infile, int outfile)
3489 {
3490     AVFormatContext *is = input_files[infile].ctx;
3491     AVFormatContext *os = output_files[outfile].ctx;
3492     int i;
3493
3494     for (i = 0; i < is->nb_chapters; i++) {
3495         AVChapter *in_ch = is->chapters[i], *out_ch;
3496         int64_t ts_off   = av_rescale_q(start_time - input_files[infile].ts_offset,
3497                                       AV_TIME_BASE_Q, in_ch->time_base);
3498         int64_t rt       = (recording_time == INT64_MAX) ? INT64_MAX :
3499                            av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
3500
3501
3502         if (in_ch->end < ts_off)
3503             continue;
3504         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
3505             break;
3506
3507         out_ch = av_mallocz(sizeof(AVChapter));
3508         if (!out_ch)
3509             return AVERROR(ENOMEM);
3510
3511         out_ch->id        = in_ch->id;
3512         out_ch->time_base = in_ch->time_base;
3513         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
3514         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
3515
3516         if (metadata_chapters_autocopy)
3517             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
3518
3519         os->nb_chapters++;
3520         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
3521         if (!os->chapters)
3522             return AVERROR(ENOMEM);
3523         os->chapters[os->nb_chapters - 1] = out_ch;
3524     }
3525     return 0;
3526 }
3527
3528 static int read_ffserver_streams(AVFormatContext *s, const char *filename)
3529 {
3530     int i, err;
3531     AVFormatContext *ic = NULL;
3532
3533     err = avformat_open_input(&ic, filename, NULL, NULL);
3534     if (err < 0)
3535         return err;
3536     /* copy stream format */
3537     for(i=0;i<ic->nb_streams;i++) {
3538         AVStream *st;
3539         OutputStream *ost;
3540         AVCodec *codec;
3541
3542         codec = avcodec_find_encoder(ic->streams[i]->codec->codec_id);
3543         ost   = new_output_stream(s, codec->type);
3544         st    = ost->st;
3545
3546         // FIXME: a more elegant solution is needed
3547         memcpy(st, ic->streams[i], sizeof(AVStream));
3548         st->info = av_malloc(sizeof(*st->info));
3549         memcpy(st->info, ic->streams[i]->info, sizeof(*st->info));
3550         avcodec_copy_context(st->codec, ic->streams[i]->codec);
3551
3552         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && !st->stream_copy)
3553             choose_sample_fmt(st, codec);
3554         else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && !st->stream_copy)
3555             choose_pixel_fmt(st, codec);
3556     }
3557
3558     av_close_input_file(ic);
3559     return 0;
3560 }
3561
3562 static int opt_output_file(const char *opt, const char *filename)
3563 {
3564     AVFormatContext *oc;
3565     int i, err;
3566     AVOutputFormat *file_oformat;
3567     OutputStream *ost;
3568     InputStream  *ist;
3569
3570     if (!strcmp(filename, "-"))
3571         filename = "pipe:";
3572
3573     err = avformat_alloc_output_context2(&oc, NULL, last_asked_format, filename);
3574     last_asked_format = NULL;
3575     if (!oc) {
3576         print_error(filename, err);
3577         exit_program(1);
3578     }
3579
3580     file_oformat= oc->oformat;
3581
3582     if (!strcmp(file_oformat->name, "ffm") &&
3583         av_strstart(filename, "http:", NULL)) {
3584         /* special case for files sent to ffserver: we get the stream
3585            parameters from ffserver */
3586         int err = read_ffserver_streams(oc, filename);
3587         if (err < 0) {
3588             print_error(filename, err);
3589             exit_program(1);
3590         }
3591     } else if (!nb_stream_maps) {
3592         /* pick the "best" stream of each type */
3593 #define NEW_STREAM(type, index)\
3594         if (index >= 0) {\
3595             ost = new_ ## type ## _stream(oc);\
3596             ost->source_index = index;\
3597             ost->sync_ist     = &input_streams[index];\
3598             input_streams[index].discard = 0;\
3599         }
3600
3601         /* video: highest resolution */
3602         if (!video_disable && oc->oformat->video_codec != CODEC_ID_NONE) {
3603             int area = 0, idx = -1;
3604             for (i = 0; i < nb_input_streams; i++) {
3605                 ist = &input_streams[i];
3606                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3607                     ist->st->codec->width * ist->st->codec->height > area) {
3608                     area = ist->st->codec->width * ist->st->codec->height;
3609                     idx = i;
3610                 }
3611             }
3612             NEW_STREAM(video, idx);
3613         }
3614
3615         /* audio: most channels */
3616         if (!audio_disable && oc->oformat->audio_codec != CODEC_ID_NONE) {
3617             int channels = 0, idx = -1;
3618             for (i = 0; i < nb_input_streams; i++) {
3619                 ist = &input_streams[i];
3620                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
3621                     ist->st->codec->channels > channels) {
3622                     channels = ist->st->codec->channels;
3623                     idx = i;
3624                 }
3625             }
3626             NEW_STREAM(audio, idx);
3627         }
3628
3629         /* subtitles: pick first */
3630         if (!subtitle_disable && oc->oformat->subtitle_codec != CODEC_ID_NONE) {
3631             for (i = 0; i < nb_input_streams; i++)
3632                 if (input_streams[i].st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3633                     NEW_STREAM(subtitle, i);
3634                     break;
3635                 }
3636         }
3637         /* do something with data? */
3638     } else {
3639         for (i = 0; i < nb_stream_maps; i++) {
3640             StreamMap *map = &stream_maps[i];
3641
3642             if (map->disabled)
3643                 continue;
3644
3645             ist = &input_streams[input_files[map->file_index].ist_index + map->stream_index];
3646             switch (ist->st->codec->codec_type) {
3647             case AVMEDIA_TYPE_VIDEO:    ost = new_video_stream(oc);    break;
3648             case AVMEDIA_TYPE_AUDIO:    ost = new_audio_stream(oc);    break;
3649             case AVMEDIA_TYPE_SUBTITLE: ost = new_subtitle_stream(oc); break;
3650             case AVMEDIA_TYPE_DATA:     ost = new_data_stream(oc);     break;
3651             default:
3652                 av_log(NULL, AV_LOG_ERROR, "Cannot map stream #%d.%d - unsupported type.\n",
3653                        map->file_index, map->stream_index);
3654                 exit_program(1);
3655             }
3656
3657             ost->source_index = input_files[map->file_index].ist_index + map->stream_index;
3658             ost->sync_ist = &input_streams[input_files[map->sync_file_index].ist_index +
3659                                            map->sync_stream_index];
3660             ist->discard = 0;
3661   &n