Redefine sameq
[ffmpeg.git] / ffmpeg.c
1 /*
2  * FFmpeg main
3  * Copyright (c) 2000-2003 Fabrice Bellard
4  *
5  * This file is part of Libav.
6  *
7  * Libav 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  * Libav 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 Libav; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21
22 /* needed for usleep() */
23 #define _XOPEN_SOURCE 600
24
25 #include "config.h"
26 #include <ctype.h>
27 #include <string.h>
28 #include <math.h>
29 #include <stdlib.h>
30 #include <errno.h>
31 #include <signal.h>
32 #include <limits.h>
33 #include <unistd.h>
34 #include "libavformat/avformat.h"
35 #include "libavdevice/avdevice.h"
36 #include "libswscale/swscale.h"
37 #include "libavcodec/opt.h"
38 #include "libavcodec/audioconvert.h"
39 #include "libavutil/audioconvert.h"
40 #include "libavutil/parseutils.h"
41 #include "libavutil/samplefmt.h"
42 #include "libavutil/colorspace.h"
43 #include "libavutil/fifo.h"
44 #include "libavutil/intreadwrite.h"
45 #include "libavutil/pixdesc.h"
46 #include "libavutil/avstring.h"
47 #include "libavutil/libm.h"
48 #include "libavformat/os_support.h"
49
50 #if CONFIG_AVFILTER
51 # include "libavfilter/avfilter.h"
52 # include "libavfilter/avfiltergraph.h"
53 # include "libavfilter/vsrc_buffer.h"
54 #endif
55
56 #if HAVE_SYS_RESOURCE_H
57 #include <sys/types.h>
58 #include <sys/time.h>
59 #include <sys/resource.h>
60 #elif HAVE_GETPROCESSTIMES
61 #include <windows.h>
62 #endif
63 #if HAVE_GETPROCESSMEMORYINFO
64 #include <windows.h>
65 #include <psapi.h>
66 #endif
67
68 #if HAVE_SYS_SELECT_H
69 #include <sys/select.h>
70 #endif
71
72 #if HAVE_KBHIT
73 #include <conio.h>
74 #endif
75 #include <time.h>
76
77 #include "cmdutils.h"
78
79 #include "libavutil/avassert.h"
80
81 const char program_name[] = "FFmpeg";
82 const int program_birth_year = 2000;
83
84 /* select an input stream for an output stream */
85 typedef struct AVStreamMap {
86     int file_index;
87     int stream_index;
88     int sync_file_index;
89     int sync_stream_index;
90 } AVStreamMap;
91
92 /**
93  * select an input file for an output file
94  */
95 typedef struct AVMetaDataMap {
96     int  file;      //< file index
97     char type;      //< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
98     int  index;     //< stream/chapter/program number
99 } AVMetaDataMap;
100
101 typedef struct AVChapterMap {
102     int in_file;
103     int out_file;
104 } AVChapterMap;
105
106 static const OptionDef options[];
107
108 #define MAX_FILES 100
109 #if !FF_API_MAX_STREAMS
110 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
111 #endif
112
113 #define FFM_PACKET_SIZE 4096 //XXX a duplicate of the line in ffm.h
114
115 static const char *last_asked_format = NULL;
116 static AVFormatContext *input_files[MAX_FILES];
117 static int64_t input_files_ts_offset[MAX_FILES];
118 static double *input_files_ts_scale[MAX_FILES] = {NULL};
119 static AVCodec **input_codecs = NULL;
120 static int nb_input_files = 0;
121 static int nb_input_codecs = 0;
122 static int nb_input_files_ts_scale[MAX_FILES] = {0};
123
124 static AVFormatContext *output_files[MAX_FILES];
125 static AVCodec **output_codecs = NULL;
126 static int nb_output_files = 0;
127 static int nb_output_codecs = 0;
128
129 static AVStreamMap *stream_maps = NULL;
130 static int nb_stream_maps;
131
132 /* first item specifies output metadata, second is input */
133 static AVMetaDataMap (*meta_data_maps)[2] = NULL;
134 static int nb_meta_data_maps;
135 static int metadata_global_autocopy   = 1;
136 static int metadata_streams_autocopy  = 1;
137 static int metadata_chapters_autocopy = 1;
138
139 static AVChapterMap *chapter_maps = NULL;
140 static int nb_chapter_maps;
141
142 /* indexed by output file stream index */
143 static int *streamid_map = NULL;
144 static int nb_streamid_map = 0;
145
146 static int frame_width  = 0;
147 static int frame_height = 0;
148 static float frame_aspect_ratio = 0;
149 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
150 static enum AVSampleFormat audio_sample_fmt = AV_SAMPLE_FMT_NONE;
151 static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
152 static AVRational frame_rate;
153 static float video_qscale = 0;
154 static uint16_t *intra_matrix = NULL;
155 static uint16_t *inter_matrix = NULL;
156 static const char *video_rc_override_string=NULL;
157 static int video_disable = 0;
158 static int video_discard = 0;
159 static char *video_codec_name = NULL;
160 static unsigned int video_codec_tag = 0;
161 static char *video_language = NULL;
162 static int same_quality = 0;
163 static int do_deinterlace = 0;
164 static int top_field_first = -1;
165 static int me_threshold = 0;
166 static int intra_dc_precision = 8;
167 static int loop_input = 0;
168 static int loop_output = AVFMT_NOOUTPUTLOOP;
169 static int qp_hist = 0;
170 #if CONFIG_AVFILTER
171 static char *vfilters = NULL;
172 static AVFilterGraph *graph = NULL;
173 #endif
174
175 static int intra_only = 0;
176 static int audio_sample_rate = 44100;
177 static int64_t channel_layout = 0;
178 #define QSCALE_NONE -99999
179 static float audio_qscale = QSCALE_NONE;
180 static int audio_disable = 0;
181 static int audio_channels = 1;
182 static char  *audio_codec_name = NULL;
183 static unsigned int audio_codec_tag = 0;
184 static char *audio_language = NULL;
185
186 static int subtitle_disable = 0;
187 static char *subtitle_codec_name = NULL;
188 static char *subtitle_language = NULL;
189 static unsigned int subtitle_codec_tag = 0;
190
191 static float mux_preload= 0.5;
192 static float mux_max_delay= 0.7;
193
194 static int64_t recording_time = INT64_MAX;
195 static int64_t start_time = 0;
196 static int64_t recording_timestamp = 0;
197 static int64_t input_ts_offset = 0;
198 static int file_overwrite = 0;
199 static AVMetadata *metadata;
200 static int do_benchmark = 0;
201 static int do_hex_dump = 0;
202 static int do_pkt_dump = 0;
203 static int do_psnr = 0;
204 static int do_pass = 0;
205 static char *pass_logfilename_prefix = NULL;
206 static int audio_stream_copy = 0;
207 static int video_stream_copy = 0;
208 static int subtitle_stream_copy = 0;
209 static int video_sync_method= -1;
210 static int audio_sync_method= 0;
211 static float audio_drift_threshold= 0.1;
212 static int copy_ts= 0;
213 static int copy_tb;
214 static int opt_shortest = 0;
215 static int video_global_header = 0;
216 static char *vstats_filename;
217 static FILE *vstats_file;
218 static int opt_programid = 0;
219 static int copy_initial_nonkeyframes = 0;
220
221 static int rate_emu = 0;
222
223 static int  video_channel = 0;
224 static char *video_standard;
225
226 static int audio_volume = 256;
227
228 static int exit_on_error = 0;
229 static int using_stdin = 0;
230 static int verbose = 1;
231 static int thread_count= 1;
232 static int q_pressed = 0;
233 static int64_t video_size = 0;
234 static int64_t audio_size = 0;
235 static int64_t extra_size = 0;
236 static int nb_frames_dup = 0;
237 static int nb_frames_drop = 0;
238 static int input_sync;
239 static uint64_t limit_filesize = 0;
240 static int force_fps = 0;
241 static char *forced_key_frames = NULL;
242
243 static float dts_delta_threshold = 10;
244
245 static unsigned int sws_flags = SWS_BICUBIC;
246
247 static int64_t timer_start;
248
249 static uint8_t *audio_buf;
250 static uint8_t *audio_out;
251 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
252
253 static short *samples;
254
255 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
256 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
257 static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL;
258
259 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
260
261 struct AVInputStream;
262
263 typedef struct AVOutputStream {
264     int file_index;          /* file index */
265     int index;               /* stream index in the output file */
266     int source_index;        /* AVInputStream index */
267     AVStream *st;            /* stream in the output file */
268     int encoding_needed;     /* true if encoding needed for this stream */
269     int frame_number;
270     /* input pts and corresponding output pts
271        for A/V sync */
272     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
273     struct AVInputStream *sync_ist; /* input stream to sync against */
274     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
275     AVBitStreamFilterContext *bitstream_filters;
276     /* video only */
277     int video_resample;
278     AVFrame pict_tmp;      /* temporary image for resampling */
279     struct SwsContext *img_resample_ctx; /* for image resampling */
280     int resample_height;
281     int resample_width;
282     int resample_pix_fmt;
283
284     /* full frame size of first frame */
285     int original_height;
286     int original_width;
287
288     /* forced key frames */
289     int64_t *forced_kf_pts;
290     int forced_kf_count;
291     int forced_kf_index;
292
293     /* audio only */
294     int audio_resample;
295     ReSampleContext *resample; /* for audio resampling */
296     int resample_sample_fmt;
297     int resample_channels;
298     int resample_sample_rate;
299     int reformat_pair;
300     AVAudioConvert *reformat_ctx;
301     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
302     FILE *logfile;
303 } AVOutputStream;
304
305 static AVOutputStream **output_streams_for_file[MAX_FILES] = { NULL };
306 static int nb_output_streams_for_file[MAX_FILES] = { 0 };
307
308 typedef struct AVInputStream {
309     int file_index;
310     int index;
311     AVStream *st;
312     int discard;             /* true if stream data should be discarded */
313     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
314     int64_t sample_index;      /* current sample */
315
316     int64_t       start;     /* time when read started */
317     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
318                                 is not defined */
319     int64_t       pts;       /* current pts */
320     PtsCorrectionContext pts_ctx;
321     int is_start;            /* is 1 at the start and after a discontinuity */
322     int showed_multi_packet_warning;
323     int is_past_recording_time;
324 #if CONFIG_AVFILTER
325     AVFilterContext *output_video_filter;
326     AVFilterContext *input_video_filter;
327     AVFrame *filter_frame;
328     int has_filter_frame;
329     AVFilterBufferRef *picref;
330 #endif
331 } AVInputStream;
332
333 typedef struct AVInputFile {
334     int eof_reached;      /* true if eof reached */
335     int ist_index;        /* index of first stream in ist_table */
336     int buffer_size;      /* current total buffer size */
337     int nb_streams;       /* nb streams we are aware of */
338 } AVInputFile;
339
340 #if CONFIG_AVFILTER
341
342 static int configure_filters(AVInputStream *ist, AVOutputStream *ost)
343 {
344     AVFilterContext *last_filter, *filter;
345     /** filter graph containing all filters including input & output */
346     AVCodecContext *codec = ost->st->codec;
347     AVCodecContext *icodec = ist->st->codec;
348     FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
349     char args[255];
350     int ret;
351
352     graph = avfilter_graph_alloc();
353
354     snprintf(args, 255, "%d:%d:%d:%d:%d", ist->st->codec->width,
355              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE);
356     ret = avfilter_graph_create_filter(&ist->input_video_filter, avfilter_get_by_name("buffer"),
357                                        "src", args, NULL, graph);
358     if (ret < 0)
359         return ret;
360     ret = avfilter_graph_create_filter(&ist->output_video_filter, &ffsink,
361                                        "out", NULL, &ffsink_ctx, graph);
362     if (ret < 0)
363         return ret;
364     last_filter = ist->input_video_filter;
365
366     if (codec->width  != icodec->width || codec->height != icodec->height) {
367         snprintf(args, 255, "%d:%d:flags=0x%X",
368                  codec->width,
369                  codec->height,
370                  (int)av_get_int(sws_opts, "sws_flags", NULL));
371         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
372                                                 NULL, args, NULL, graph)) < 0)
373             return ret;
374         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
375             return ret;
376         last_filter = filter;
377     }
378
379     snprintf(args, sizeof(args), "flags=0x%X", (int)av_get_int(sws_opts, "sws_flags", NULL));
380     graph->scale_sws_opts = av_strdup(args);
381
382     if (vfilters) {
383         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
384         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
385
386         outputs->name    = av_strdup("in");
387         outputs->filter_ctx = last_filter;
388         outputs->pad_idx = 0;
389         outputs->next    = NULL;
390
391         inputs->name    = av_strdup("out");
392         inputs->filter_ctx = ist->output_video_filter;
393         inputs->pad_idx = 0;
394         inputs->next    = NULL;
395
396         if ((ret = avfilter_graph_parse(graph, vfilters, inputs, outputs, NULL)) < 0)
397             return ret;
398         av_freep(&vfilters);
399     } else {
400         if ((ret = avfilter_link(last_filter, 0, ist->output_video_filter, 0)) < 0)
401             return ret;
402     }
403
404     if ((ret = avfilter_graph_config(graph, NULL)) < 0)
405         return ret;
406
407     codec->width  = ist->output_video_filter->inputs[0]->w;
408     codec->height = ist->output_video_filter->inputs[0]->h;
409
410     return 0;
411 }
412 #endif /* CONFIG_AVFILTER */
413
414 static void term_exit(void)
415 {
416     av_log(NULL, AV_LOG_QUIET, "");
417 }
418
419 static volatile int received_sigterm = 0;
420
421 static void
422 sigterm_handler(int sig)
423 {
424     received_sigterm = sig;
425     term_exit();
426 }
427
428 static void term_init(void)
429 {
430     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
431     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
432 #ifdef SIGXCPU
433     signal(SIGXCPU, sigterm_handler);
434 #endif
435 }
436
437 /* read a key without blocking */
438 static int read_key(void)
439 {
440 #if HAVE_KBHIT
441     if(kbhit())
442         return(getch());
443 #endif
444     return -1;
445 }
446
447 static int decode_interrupt_cb(void)
448 {
449     return q_pressed || (q_pressed = read_key() == 'q');
450 }
451
452 static int ffmpeg_exit(int ret)
453 {
454     int i;
455
456     /* close files */
457     for(i=0;i<nb_output_files;i++) {
458         AVFormatContext *s = output_files[i];
459         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
460             avio_close(s->pb);
461         avformat_free_context(s);
462         av_free(output_streams_for_file[i]);
463     }
464     for(i=0;i<nb_input_files;i++) {
465         av_close_input_file(input_files[i]);
466         av_free(input_files_ts_scale[i]);
467     }
468
469     av_free(intra_matrix);
470     av_free(inter_matrix);
471
472     if (vstats_file)
473         fclose(vstats_file);
474     av_free(vstats_filename);
475
476     av_free(streamid_map);
477     av_free(input_codecs);
478     av_free(output_codecs);
479     av_free(stream_maps);
480     av_free(meta_data_maps);
481
482     av_free(video_codec_name);
483     av_free(audio_codec_name);
484     av_free(subtitle_codec_name);
485
486     av_free(video_standard);
487
488     uninit_opts();
489     av_free(audio_buf);
490     av_free(audio_out);
491     allocated_audio_buf_size= allocated_audio_out_size= 0;
492     av_free(samples);
493
494 #if CONFIG_AVFILTER
495     avfilter_uninit();
496 #endif
497
498     if (received_sigterm) {
499         fprintf(stderr,
500             "Received signal %d: terminating.\n",
501             (int) received_sigterm);
502         exit (255);
503     }
504
505     exit(ret); /* not all OS-es handle main() return value */
506     return ret;
507 }
508
509 /* similar to ff_dynarray_add() and av_fast_realloc() */
510 static void *grow_array(void *array, int elem_size, int *size, int new_size)
511 {
512     if (new_size >= INT_MAX / elem_size) {
513         fprintf(stderr, "Array too big.\n");
514         ffmpeg_exit(1);
515     }
516     if (*size < new_size) {
517         uint8_t *tmp = av_realloc(array, new_size*elem_size);
518         if (!tmp) {
519             fprintf(stderr, "Could not alloc buffer.\n");
520             ffmpeg_exit(1);
521         }
522         memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
523         *size = new_size;
524         return tmp;
525     }
526     return array;
527 }
528
529 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
530 {
531     if(codec && codec->sample_fmts){
532         const enum AVSampleFormat *p= codec->sample_fmts;
533         for(; *p!=-1; p++){
534             if(*p == st->codec->sample_fmt)
535                 break;
536         }
537         if (*p == -1) {
538             av_log(NULL, AV_LOG_WARNING,
539                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
540                    av_get_sample_fmt_name(st->codec->sample_fmt),
541                    codec->name,
542                    av_get_sample_fmt_name(codec->sample_fmts[0]));
543             st->codec->sample_fmt = codec->sample_fmts[0];
544         }
545     }
546 }
547
548 static void choose_sample_rate(AVStream *st, AVCodec *codec)
549 {
550     if(codec && codec->supported_samplerates){
551         const int *p= codec->supported_samplerates;
552         int best=0;
553         int best_dist=INT_MAX;
554         for(; *p; p++){
555             int dist= abs(st->codec->sample_rate - *p);
556             if(dist < best_dist){
557                 best_dist= dist;
558                 best= *p;
559             }
560         }
561         if(best_dist){
562             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
563         }
564         st->codec->sample_rate= best;
565     }
566 }
567
568 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
569 {
570     if(codec && codec->pix_fmts){
571         const enum PixelFormat *p= codec->pix_fmts;
572         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
573             if(st->codec->codec_id==CODEC_ID_MJPEG){
574                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
575             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
576                 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};
577             }
578         }
579         for(; *p!=-1; p++){
580             if(*p == st->codec->pix_fmt)
581                 break;
582         }
583         if(*p == -1)
584             st->codec->pix_fmt = codec->pix_fmts[0];
585     }
586 }
587
588 static AVOutputStream *new_output_stream(AVFormatContext *oc, int file_idx)
589 {
590     int idx = oc->nb_streams - 1;
591     AVOutputStream *ost;
592
593     output_streams_for_file[file_idx] =
594         grow_array(output_streams_for_file[file_idx],
595                    sizeof(*output_streams_for_file[file_idx]),
596                    &nb_output_streams_for_file[file_idx],
597                    oc->nb_streams);
598     ost = output_streams_for_file[file_idx][idx] =
599         av_mallocz(sizeof(AVOutputStream));
600     if (!ost) {
601         fprintf(stderr, "Could not alloc output stream\n");
602         ffmpeg_exit(1);
603     }
604     ost->file_index = file_idx;
605     ost->index = idx;
606     return ost;
607 }
608
609 static int read_ffserver_streams(AVFormatContext *s, const char *filename)
610 {
611     int i, err;
612     AVFormatContext *ic;
613     int nopts = 0;
614
615     err = av_open_input_file(&ic, filename, NULL, FFM_PACKET_SIZE, NULL);
616     if (err < 0)
617         return err;
618     /* copy stream format */
619     s->nb_streams = 0;
620     for(i=0;i<ic->nb_streams;i++) {
621         AVStream *st;
622         AVCodec *codec;
623
624         s->nb_streams++;
625
626         // FIXME: a more elegant solution is needed
627         st = av_mallocz(sizeof(AVStream));
628         memcpy(st, ic->streams[i], sizeof(AVStream));
629         st->codec = avcodec_alloc_context();
630         if (!st->codec) {
631             print_error(filename, AVERROR(ENOMEM));
632             ffmpeg_exit(1);
633         }
634         avcodec_copy_context(st->codec, ic->streams[i]->codec);
635         s->streams[i] = st;
636
637         codec = avcodec_find_encoder(st->codec->codec_id);
638         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
639             if (audio_stream_copy) {
640                 st->stream_copy = 1;
641             } else
642                 choose_sample_fmt(st, codec);
643         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
644             if (video_stream_copy) {
645                 st->stream_copy = 1;
646             } else
647                 choose_pixel_fmt(st, codec);
648         }
649
650         if(st->codec->flags & CODEC_FLAG_BITEXACT)
651             nopts = 1;
652
653         new_output_stream(s, nb_output_files);
654     }
655
656     if (!nopts)
657         s->timestamp = av_gettime();
658
659     av_close_input_file(ic);
660     return 0;
661 }
662
663 static double
664 get_sync_ipts(const AVOutputStream *ost)
665 {
666     const AVInputStream *ist = ost->sync_ist;
667     return (double)(ist->pts - start_time)/AV_TIME_BASE;
668 }
669
670 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
671     int ret;
672
673     while(bsfc){
674         AVPacket new_pkt= *pkt;
675         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
676                                           &new_pkt.data, &new_pkt.size,
677                                           pkt->data, pkt->size,
678                                           pkt->flags & AV_PKT_FLAG_KEY);
679         if(a>0){
680             av_free_packet(pkt);
681             new_pkt.destruct= av_destruct_packet;
682         } else if(a<0){
683             fprintf(stderr, "%s failed for stream %d, codec %s",
684                     bsfc->filter->name, pkt->stream_index,
685                     avctx->codec ? avctx->codec->name : "copy");
686             print_error("", a);
687             if (exit_on_error)
688                 ffmpeg_exit(1);
689         }
690         *pkt= new_pkt;
691
692         bsfc= bsfc->next;
693     }
694
695     ret= av_interleaved_write_frame(s, pkt);
696     if(ret < 0){
697         print_error("av_interleaved_write_frame()", ret);
698         ffmpeg_exit(1);
699     }
700 }
701
702 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
703
704 static void do_audio_out(AVFormatContext *s,
705                          AVOutputStream *ost,
706                          AVInputStream *ist,
707                          unsigned char *buf, int size)
708 {
709     uint8_t *buftmp;
710     int64_t audio_out_size, audio_buf_size;
711     int64_t allocated_for_size= size;
712
713     int size_out, frame_bytes, ret, resample_changed;
714     AVCodecContext *enc= ost->st->codec;
715     AVCodecContext *dec= ist->st->codec;
716     int osize= av_get_bits_per_sample_fmt(enc->sample_fmt)/8;
717     int isize= av_get_bits_per_sample_fmt(dec->sample_fmt)/8;
718     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
719
720 need_realloc:
721     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
722     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
723     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
724     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
725     audio_buf_size*= osize*enc->channels;
726
727     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
728     if(coded_bps > 8*osize)
729         audio_out_size= audio_out_size * coded_bps / (8*osize);
730     audio_out_size += FF_MIN_BUFFER_SIZE;
731
732     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
733         fprintf(stderr, "Buffer sizes too large\n");
734         ffmpeg_exit(1);
735     }
736
737     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
738     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
739     if (!audio_buf || !audio_out){
740         fprintf(stderr, "Out of memory in do_audio_out\n");
741         ffmpeg_exit(1);
742     }
743
744     if (enc->channels != dec->channels)
745         ost->audio_resample = 1;
746
747     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
748                        ost->resample_channels    != dec->channels   ||
749                        ost->resample_sample_rate != dec->sample_rate;
750
751     if ((ost->audio_resample && !ost->resample) || resample_changed) {
752         if (resample_changed) {
753             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",
754                    ist->file_index, ist->index,
755                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
756                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
757             ost->resample_sample_fmt  = dec->sample_fmt;
758             ost->resample_channels    = dec->channels;
759             ost->resample_sample_rate = dec->sample_rate;
760             if (ost->resample)
761                 audio_resample_close(ost->resample);
762         }
763         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
764         if (audio_sync_method <= 1 &&
765             ost->resample_sample_fmt  == enc->sample_fmt &&
766             ost->resample_channels    == enc->channels   &&
767             ost->resample_sample_rate == enc->sample_rate) {
768             ost->resample = NULL;
769             ost->audio_resample = 0;
770         } else {
771             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
772                 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
773             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
774                                                    enc->sample_rate, dec->sample_rate,
775                                                    enc->sample_fmt,  dec->sample_fmt,
776                                                    16, 10, 0, 0.8);
777             if (!ost->resample) {
778                 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
779                         dec->channels, dec->sample_rate,
780                         enc->channels, enc->sample_rate);
781                 ffmpeg_exit(1);
782             }
783         }
784     }
785
786 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
787     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
788         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
789         if (ost->reformat_ctx)
790             av_audio_convert_free(ost->reformat_ctx);
791         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
792                                                    dec->sample_fmt, 1, NULL, 0);
793         if (!ost->reformat_ctx) {
794             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
795                 av_get_sample_fmt_name(dec->sample_fmt),
796                 av_get_sample_fmt_name(enc->sample_fmt));
797             ffmpeg_exit(1);
798         }
799         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
800     }
801
802     if(audio_sync_method){
803         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
804                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
805         double idelta= delta*dec->sample_rate / enc->sample_rate;
806         int byte_delta= ((int)idelta)*2*dec->channels;
807
808         //FIXME resample delay
809         if(fabs(delta) > 50){
810             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
811                 if(byte_delta < 0){
812                     byte_delta= FFMAX(byte_delta, -size);
813                     size += byte_delta;
814                     buf  -= byte_delta;
815                     if(verbose > 2)
816                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
817                     if(!size)
818                         return;
819                     ist->is_start=0;
820                 }else{
821                     static uint8_t *input_tmp= NULL;
822                     input_tmp= av_realloc(input_tmp, byte_delta + size);
823
824                     if(byte_delta > allocated_for_size - size){
825                         allocated_for_size= byte_delta + (int64_t)size;
826                         goto need_realloc;
827                     }
828                     ist->is_start=0;
829
830                     memset(input_tmp, 0, byte_delta);
831                     memcpy(input_tmp + byte_delta, buf, size);
832                     buf= input_tmp;
833                     size += byte_delta;
834                     if(verbose > 2)
835                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
836                 }
837             }else if(audio_sync_method>1){
838                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
839                 av_assert0(ost->audio_resample);
840                 if(verbose > 2)
841                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
842 //                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));
843                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
844             }
845         }
846     }else
847         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
848                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
849
850     if (ost->audio_resample) {
851         buftmp = audio_buf;
852         size_out = audio_resample(ost->resample,
853                                   (short *)buftmp, (short *)buf,
854                                   size / (dec->channels * isize));
855         size_out = size_out * enc->channels * osize;
856     } else {
857         buftmp = buf;
858         size_out = size;
859     }
860
861     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
862         const void *ibuf[6]= {buftmp};
863         void *obuf[6]= {audio_buf};
864         int istride[6]= {isize};
865         int ostride[6]= {osize};
866         int len= size_out/istride[0];
867         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
868             printf("av_audio_convert() failed\n");
869             if (exit_on_error)
870                 ffmpeg_exit(1);
871             return;
872         }
873         buftmp = audio_buf;
874         size_out = len*osize;
875     }
876
877     /* now encode as many frames as possible */
878     if (enc->frame_size > 1) {
879         /* output resampled raw samples */
880         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
881             fprintf(stderr, "av_fifo_realloc2() failed\n");
882             ffmpeg_exit(1);
883         }
884         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
885
886         frame_bytes = enc->frame_size * osize * enc->channels;
887
888         while (av_fifo_size(ost->fifo) >= frame_bytes) {
889             AVPacket pkt;
890             av_init_packet(&pkt);
891
892             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
893
894             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
895
896             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
897                                        (short *)audio_buf);
898             if (ret < 0) {
899                 fprintf(stderr, "Audio encoding failed\n");
900                 ffmpeg_exit(1);
901             }
902             audio_size += ret;
903             pkt.stream_index= ost->index;
904             pkt.data= audio_out;
905             pkt.size= ret;
906             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
907                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
908             pkt.flags |= AV_PKT_FLAG_KEY;
909             write_frame(s, &pkt, enc, ost->bitstream_filters);
910
911             ost->sync_opts += enc->frame_size;
912         }
913     } else {
914         AVPacket pkt;
915         av_init_packet(&pkt);
916
917         ost->sync_opts += size_out / (osize * enc->channels);
918
919         /* output a pcm frame */
920         /* determine the size of the coded buffer */
921         size_out /= osize;
922         if (coded_bps)
923             size_out = size_out*coded_bps/8;
924
925         if(size_out > audio_out_size){
926             fprintf(stderr, "Internal error, buffer size too small\n");
927             ffmpeg_exit(1);
928         }
929
930         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
931         ret = avcodec_encode_audio(enc, audio_out, size_out,
932                                    (short *)buftmp);
933         if (ret < 0) {
934             fprintf(stderr, "Audio encoding failed\n");
935             ffmpeg_exit(1);
936         }
937         audio_size += ret;
938         pkt.stream_index= ost->index;
939         pkt.data= audio_out;
940         pkt.size= ret;
941         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
942             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
943         pkt.flags |= AV_PKT_FLAG_KEY;
944         write_frame(s, &pkt, enc, ost->bitstream_filters);
945     }
946 }
947
948 static void pre_process_video_frame(AVInputStream *ist, AVPicture *picture, void **bufp)
949 {
950     AVCodecContext *dec;
951     AVPicture *picture2;
952     AVPicture picture_tmp;
953     uint8_t *buf = 0;
954
955     dec = ist->st->codec;
956
957     /* deinterlace : must be done before any resize */
958     if (do_deinterlace) {
959         int size;
960
961         /* create temporary picture */
962         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
963         buf = av_malloc(size);
964         if (!buf)
965             return;
966
967         picture2 = &picture_tmp;
968         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
969
970         if(avpicture_deinterlace(picture2, picture,
971                                  dec->pix_fmt, dec->width, dec->height) < 0) {
972             /* if error, do not deinterlace */
973             fprintf(stderr, "Deinterlacing failed\n");
974             av_free(buf);
975             buf = NULL;
976             picture2 = picture;
977         }
978     } else {
979         picture2 = picture;
980     }
981
982     if (picture != picture2)
983         *picture = *picture2;
984     *bufp = buf;
985 }
986
987 /* we begin to correct av delay at this threshold */
988 #define AV_DELAY_MAX 0.100
989
990 static void do_subtitle_out(AVFormatContext *s,
991                             AVOutputStream *ost,
992                             AVInputStream *ist,
993                             AVSubtitle *sub,
994                             int64_t pts)
995 {
996     static uint8_t *subtitle_out = NULL;
997     int subtitle_out_max_size = 1024 * 1024;
998     int subtitle_out_size, nb, i;
999     AVCodecContext *enc;
1000     AVPacket pkt;
1001
1002     if (pts == AV_NOPTS_VALUE) {
1003         fprintf(stderr, "Subtitle packets must have a pts\n");
1004         if (exit_on_error)
1005             ffmpeg_exit(1);
1006         return;
1007     }
1008
1009     enc = ost->st->codec;
1010
1011     if (!subtitle_out) {
1012         subtitle_out = av_malloc(subtitle_out_max_size);
1013     }
1014
1015     /* Note: DVB subtitle need one packet to draw them and one other
1016        packet to clear them */
1017     /* XXX: signal it in the codec context ? */
1018     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1019         nb = 2;
1020     else
1021         nb = 1;
1022
1023     for(i = 0; i < nb; i++) {
1024         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1025         // start_display_time is required to be 0
1026         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1027         sub->end_display_time -= sub->start_display_time;
1028         sub->start_display_time = 0;
1029         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1030                                                     subtitle_out_max_size, sub);
1031         if (subtitle_out_size < 0) {
1032             fprintf(stderr, "Subtitle encoding failed\n");
1033             ffmpeg_exit(1);
1034         }
1035
1036         av_init_packet(&pkt);
1037         pkt.stream_index = ost->index;
1038         pkt.data = subtitle_out;
1039         pkt.size = subtitle_out_size;
1040         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1041         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1042             /* XXX: the pts correction is handled here. Maybe handling
1043                it in the codec would be better */
1044             if (i == 0)
1045                 pkt.pts += 90 * sub->start_display_time;
1046             else
1047                 pkt.pts += 90 * sub->end_display_time;
1048         }
1049         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1050     }
1051 }
1052
1053 static int bit_buffer_size= 1024*256;
1054 static uint8_t *bit_buffer= NULL;
1055
1056 static void do_video_out(AVFormatContext *s,
1057                          AVOutputStream *ost,
1058                          AVInputStream *ist,
1059                          AVFrame *in_picture,
1060                          int *frame_size)
1061 {
1062     int nb_frames, i, ret;
1063     AVFrame *final_picture, *formatted_picture, *resampling_dst, *padding_src;
1064     AVCodecContext *enc, *dec;
1065     double sync_ipts;
1066
1067     enc = ost->st->codec;
1068     dec = ist->st->codec;
1069
1070     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1071
1072     /* by default, we output a single frame */
1073     nb_frames = 1;
1074
1075     *frame_size = 0;
1076
1077     if(video_sync_method){
1078         double vdelta = sync_ipts - ost->sync_opts;
1079         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1080         if (vdelta < -1.1)
1081             nb_frames = 0;
1082         else if (video_sync_method == 2 || (video_sync_method<0 && (s->oformat->flags & AVFMT_VARIABLE_FPS))){
1083             if(vdelta<=-0.6){
1084                 nb_frames=0;
1085             }else if(vdelta>0.6)
1086                 ost->sync_opts= lrintf(sync_ipts);
1087         }else if (vdelta > 1.1)
1088             nb_frames = lrintf(vdelta);
1089 //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);
1090         if (nb_frames == 0){
1091             ++nb_frames_drop;
1092             if (verbose>2)
1093                 fprintf(stderr, "*** drop!\n");
1094         }else if (nb_frames > 1) {
1095             nb_frames_dup += nb_frames - 1;
1096             if (verbose>2)
1097                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1098         }
1099     }else
1100         ost->sync_opts= lrintf(sync_ipts);
1101
1102     nb_frames= FFMIN(nb_frames, max_frames[AVMEDIA_TYPE_VIDEO] - ost->frame_number);
1103     if (nb_frames <= 0)
1104         return;
1105
1106     formatted_picture = in_picture;
1107     final_picture = formatted_picture;
1108     padding_src = formatted_picture;
1109     resampling_dst = &ost->pict_tmp;
1110
1111     if (   ost->resample_height != ist->st->codec->height
1112         || ost->resample_width  != ist->st->codec->width
1113         || (ost->resample_pix_fmt!= ist->st->codec->pix_fmt) ) {
1114
1115         fprintf(stderr,"Input Stream #%d.%d frame size changed to %dx%d, %s\n", ist->file_index, ist->index, ist->st->codec->width,     ist->st->codec->height,avcodec_get_pix_fmt_name(ist->st->codec->pix_fmt));
1116         if(!ost->video_resample)
1117             ffmpeg_exit(1);
1118     }
1119
1120 #if !CONFIG_AVFILTER
1121     if (ost->video_resample) {
1122         padding_src = NULL;
1123         final_picture = &ost->pict_tmp;
1124         if(  ost->resample_height != ist->st->codec->height
1125           || ost->resample_width  != ist->st->codec->width
1126           || (ost->resample_pix_fmt!= ist->st->codec->pix_fmt) ) {
1127
1128             /* initialize a new scaler context */
1129             sws_freeContext(ost->img_resample_ctx);
1130             sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
1131             ost->img_resample_ctx = sws_getContext(
1132                 ist->st->codec->width,
1133                 ist->st->codec->height,
1134                 ist->st->codec->pix_fmt,
1135                 ost->st->codec->width,
1136                 ost->st->codec->height,
1137                 ost->st->codec->pix_fmt,
1138                 sws_flags, NULL, NULL, NULL);
1139             if (ost->img_resample_ctx == NULL) {
1140                 fprintf(stderr, "Cannot get resampling context\n");
1141                 ffmpeg_exit(1);
1142             }
1143         }
1144         sws_scale(ost->img_resample_ctx, formatted_picture->data, formatted_picture->linesize,
1145               0, ost->resample_height, resampling_dst->data, resampling_dst->linesize);
1146     }
1147 #endif
1148
1149     /* duplicates frame if needed */
1150     for(i=0;i<nb_frames;i++) {
1151         AVPacket pkt;
1152         av_init_packet(&pkt);
1153         pkt.stream_index= ost->index;
1154
1155         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1156             /* raw pictures are written as AVPicture structure to
1157                avoid any copies. We support temorarily the older
1158                method. */
1159             AVFrame* old_frame = enc->coded_frame;
1160             enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
1161             pkt.data= (uint8_t *)final_picture;
1162             pkt.size=  sizeof(AVPicture);
1163             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1164             pkt.flags |= AV_PKT_FLAG_KEY;
1165
1166             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1167             enc->coded_frame = old_frame;
1168         } else {
1169             AVFrame big_picture;
1170
1171             big_picture= *final_picture;
1172             /* better than nothing: use input picture interlaced
1173                settings */
1174             big_picture.interlaced_frame = in_picture->interlaced_frame;
1175             if(avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)){
1176                 if(top_field_first == -1)
1177                     big_picture.top_field_first = in_picture->top_field_first;
1178                 else
1179                     big_picture.top_field_first = top_field_first;
1180             }
1181
1182             /* handles sameq here. This is not correct because it may
1183                not be a global option */
1184             big_picture.quality = same_quality ? ist->st->quality : ost->st->quality;
1185             if(!me_threshold)
1186                 big_picture.pict_type = 0;
1187 //            big_picture.pts = AV_NOPTS_VALUE;
1188             big_picture.pts= ost->sync_opts;
1189 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1190 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1191             if (ost->forced_kf_index < ost->forced_kf_count &&
1192                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1193                 big_picture.pict_type = FF_I_TYPE;
1194                 ost->forced_kf_index++;
1195             }
1196             ret = avcodec_encode_video(enc,
1197                                        bit_buffer, bit_buffer_size,
1198                                        &big_picture);
1199             if (ret < 0) {
1200                 fprintf(stderr, "Video encoding failed\n");
1201                 ffmpeg_exit(1);
1202             }
1203
1204             if(ret>0){
1205                 pkt.data= bit_buffer;
1206                 pkt.size= ret;
1207                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1208                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1209 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1210    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1211    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1212
1213                 if(enc->coded_frame->key_frame)
1214                     pkt.flags |= AV_PKT_FLAG_KEY;
1215                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1216                 *frame_size = ret;
1217                 video_size += ret;
1218                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1219                 //        enc->frame_number-1, ret, enc->pict_type);
1220                 /* if two pass, output log */
1221                 if (ost->logfile && enc->stats_out) {
1222                     fprintf(ost->logfile, "%s", enc->stats_out);
1223                 }
1224             }
1225         }
1226         ost->sync_opts++;
1227         ost->frame_number++;
1228     }
1229 }
1230
1231 static double psnr(double d){
1232     return -10.0*log(d)/log(10.0);
1233 }
1234
1235 static void do_video_stats(AVFormatContext *os, AVOutputStream *ost,
1236                            int frame_size)
1237 {
1238     AVCodecContext *enc;
1239     int frame_number;
1240     double ti1, bitrate, avg_bitrate;
1241
1242     /* this is executed just the first time do_video_stats is called */
1243     if (!vstats_file) {
1244         vstats_file = fopen(vstats_filename, "w");
1245         if (!vstats_file) {
1246             perror("fopen");
1247             ffmpeg_exit(1);
1248         }
1249     }
1250
1251     enc = ost->st->codec;
1252     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1253         frame_number = ost->frame_number;
1254         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1255         if (enc->flags&CODEC_FLAG_PSNR)
1256             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1257
1258         fprintf(vstats_file,"f_size= %6d ", frame_size);
1259         /* compute pts value */
1260         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1261         if (ti1 < 0.01)
1262             ti1 = 0.01;
1263
1264         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1265         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1266         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1267             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1268         fprintf(vstats_file,"type= %c\n", av_get_pict_type_char(enc->coded_frame->pict_type));
1269     }
1270 }
1271
1272 static void print_report(AVFormatContext **output_files,
1273                          AVOutputStream **ost_table, int nb_ostreams,
1274                          int is_last_report)
1275 {
1276     char buf[1024];
1277     AVOutputStream *ost;
1278     AVFormatContext *oc;
1279     int64_t total_size;
1280     AVCodecContext *enc;
1281     int frame_number, vid, i;
1282     double bitrate, ti1, pts;
1283     static int64_t last_time = -1;
1284     static int qp_histogram[52];
1285
1286     if (!is_last_report) {
1287         int64_t cur_time;
1288         /* display the report every 0.5 seconds */
1289         cur_time = av_gettime();
1290         if (last_time == -1) {
1291             last_time = cur_time;
1292             return;
1293         }
1294         if ((cur_time - last_time) < 500000)
1295             return;
1296         last_time = cur_time;
1297     }
1298
1299
1300     oc = output_files[0];
1301
1302     total_size = avio_size(oc->pb);
1303     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1304         total_size= avio_tell(oc->pb);
1305
1306     buf[0] = '\0';
1307     ti1 = 1e10;
1308     vid = 0;
1309     for(i=0;i<nb_ostreams;i++) {
1310         ost = ost_table[i];
1311         enc = ost->st->codec;
1312         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1313             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ",
1314                      !ost->st->stream_copy ?
1315                      enc->coded_frame->quality/(float)FF_QP2LAMBDA : -1);
1316         }
1317         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1318             float t = (av_gettime()-timer_start) / 1000000.0;
1319
1320             frame_number = ost->frame_number;
1321             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1322                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0,
1323                      !ost->st->stream_copy ?
1324                      enc->coded_frame->quality/(float)FF_QP2LAMBDA : -1);
1325             if(is_last_report)
1326                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1327             if(qp_hist){
1328                 int j;
1329                 int qp= lrintf(enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1330                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1331                     qp_histogram[qp]++;
1332                 for(j=0; j<32; j++)
1333                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1334             }
1335             if (enc->flags&CODEC_FLAG_PSNR){
1336                 int j;
1337                 double error, error_sum=0;
1338                 double scale, scale_sum=0;
1339                 char type[3]= {'Y','U','V'};
1340                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1341                 for(j=0; j<3; j++){
1342                     if(is_last_report){
1343                         error= enc->error[j];
1344                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1345                     }else{
1346                         error= enc->coded_frame->error[j];
1347                         scale= enc->width*enc->height*255.0*255.0;
1348                     }
1349                     if(j) scale/=4;
1350                     error_sum += error;
1351                     scale_sum += scale;
1352                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1353                 }
1354                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1355             }
1356             vid = 1;
1357         }
1358         /* compute min output value */
1359         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1360         if ((pts < ti1) && (pts > 0))
1361             ti1 = pts;
1362     }
1363     if (ti1 < 0.01)
1364         ti1 = 0.01;
1365
1366     if (verbose || is_last_report) {
1367         bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1368
1369         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1370             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1371             (double)total_size / 1024, ti1, bitrate);
1372
1373         if (nb_frames_dup || nb_frames_drop)
1374           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1375                   nb_frames_dup, nb_frames_drop);
1376
1377         if (verbose >= 0)
1378             fprintf(stderr, "%s    \r", buf);
1379
1380         fflush(stderr);
1381     }
1382
1383     if (is_last_report && verbose >= 0){
1384         int64_t raw= audio_size + video_size + extra_size;
1385         fprintf(stderr, "\n");
1386         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1387                 video_size/1024.0,
1388                 audio_size/1024.0,
1389                 extra_size/1024.0,
1390                 100.0*(total_size - raw)/raw
1391         );
1392     }
1393 }
1394
1395 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1396 {
1397     int fill_char = 0x00;
1398     if (sample_fmt == AV_SAMPLE_FMT_U8)
1399         fill_char = 0x80;
1400     memset(buf, fill_char, size);
1401 }
1402
1403 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1404 static int output_packet(AVInputStream *ist, int ist_index,
1405                          AVOutputStream **ost_table, int nb_ostreams,
1406                          const AVPacket *pkt)
1407 {
1408     AVFormatContext *os;
1409     AVOutputStream *ost;
1410     int ret, i;
1411     int got_picture;
1412     AVFrame picture;
1413     void *buffer_to_free;
1414     static unsigned int samples_size= 0;
1415     AVSubtitle subtitle, *subtitle_to_free;
1416     int64_t pkt_pts = AV_NOPTS_VALUE;
1417 #if CONFIG_AVFILTER
1418     int frame_available;
1419 #endif
1420
1421     AVPacket avpkt;
1422     int bps = av_get_bits_per_sample_fmt(ist->st->codec->sample_fmt)>>3;
1423
1424     if(ist->next_pts == AV_NOPTS_VALUE)
1425         ist->next_pts= ist->pts;
1426
1427     if (pkt == NULL) {
1428         /* EOF handling */
1429         av_init_packet(&avpkt);
1430         avpkt.data = NULL;
1431         avpkt.size = 0;
1432         goto handle_eof;
1433     } else {
1434         avpkt = *pkt;
1435     }
1436
1437     if(pkt->dts != AV_NOPTS_VALUE)
1438         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1439     if(pkt->pts != AV_NOPTS_VALUE)
1440         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1441
1442     //while we have more to decode or while the decoder did output something on EOF
1443     while (avpkt.size > 0 || (!pkt && ist->next_pts != ist->pts)) {
1444         uint8_t *data_buf, *decoded_data_buf;
1445         int data_size, decoded_data_size;
1446     handle_eof:
1447         ist->pts= ist->next_pts;
1448
1449         if(avpkt.size && avpkt.size != pkt->size &&
1450            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1451             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1452             ist->showed_multi_packet_warning=1;
1453         }
1454
1455         /* decode the packet if needed */
1456         decoded_data_buf = NULL; /* fail safe */
1457         decoded_data_size= 0;
1458         data_buf  = avpkt.data;
1459         data_size = avpkt.size;
1460         subtitle_to_free = NULL;
1461         if (ist->decoding_needed) {
1462             switch(ist->st->codec->codec_type) {
1463             case AVMEDIA_TYPE_AUDIO:{
1464                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1465                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1466                     av_free(samples);
1467                     samples= av_malloc(samples_size);
1468                 }
1469                 decoded_data_size= samples_size;
1470                     /* XXX: could avoid copy if PCM 16 bits with same
1471                        endianness as CPU */
1472                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1473                                             &avpkt);
1474                 if (ret < 0)
1475                     goto fail_decode;
1476                 avpkt.data += ret;
1477                 avpkt.size -= ret;
1478                 data_size   = ret;
1479                 /* Some bug in mpeg audio decoder gives */
1480                 /* decoded_data_size < 0, it seems they are overflows */
1481                 if (decoded_data_size <= 0) {
1482                     /* no audio frame */
1483                     continue;
1484                 }
1485                 decoded_data_buf = (uint8_t *)samples;
1486                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1487                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1488                 break;}
1489             case AVMEDIA_TYPE_VIDEO:
1490                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1491                     /* XXX: allocate picture correctly */
1492                     avcodec_get_frame_defaults(&picture);
1493                     avpkt.pts = pkt_pts;
1494                     avpkt.dts = ist->pts;
1495                     pkt_pts = AV_NOPTS_VALUE;
1496
1497                     ret = avcodec_decode_video2(ist->st->codec,
1498                                                 &picture, &got_picture, &avpkt);
1499                     ist->st->quality= picture.quality;
1500                     if (ret < 0)
1501                         goto fail_decode;
1502                     if (!got_picture) {
1503                         /* no picture yet */
1504                         goto discard_packet;
1505                     }
1506                     ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, picture.pkt_pts, picture.pkt_dts);
1507                     if (ist->st->codec->time_base.num != 0) {
1508                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1509                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1510                                           ist->st->codec->time_base.num * ticks) /
1511                             ist->st->codec->time_base.den;
1512                     }
1513                     avpkt.size = 0;
1514                     break;
1515             case AVMEDIA_TYPE_SUBTITLE:
1516                 ret = avcodec_decode_subtitle2(ist->st->codec,
1517                                                &subtitle, &got_picture, &avpkt);
1518                 if (ret < 0)
1519                     goto fail_decode;
1520                 if (!got_picture) {
1521                     goto discard_packet;
1522                 }
1523                 subtitle_to_free = &subtitle;
1524                 avpkt.size = 0;
1525                 break;
1526             default:
1527                 goto fail_decode;
1528             }
1529         } else {
1530             switch(ist->st->codec->codec_type) {
1531             case AVMEDIA_TYPE_AUDIO:
1532                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1533                     ist->st->codec->sample_rate;
1534                 break;
1535             case AVMEDIA_TYPE_VIDEO:
1536                 if (ist->st->codec->time_base.num != 0) {
1537                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1538                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1539                                       ist->st->codec->time_base.num * ticks) /
1540                         ist->st->codec->time_base.den;
1541                 }
1542                 break;
1543             }
1544             ret = avpkt.size;
1545             avpkt.size = 0;
1546         }
1547
1548         buffer_to_free = NULL;
1549         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1550             pre_process_video_frame(ist, (AVPicture *)&picture,
1551                                     &buffer_to_free);
1552         }
1553
1554 #if CONFIG_AVFILTER
1555         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ist->input_video_filter) {
1556             AVRational sar;
1557             if (ist->st->sample_aspect_ratio.num) sar = ist->st->sample_aspect_ratio;
1558             else                                  sar = ist->st->codec->sample_aspect_ratio;
1559             // add it to be filtered
1560             av_vsrc_buffer_add_frame(ist->input_video_filter, &picture,
1561                                      ist->pts,
1562                                      sar);
1563         }
1564 #endif
1565
1566         // preprocess audio (volume)
1567         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1568             if (audio_volume != 256) {
1569                 short *volp;
1570                 volp = samples;
1571                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1572                     int v = ((*volp) * audio_volume + 128) >> 8;
1573                     if (v < -32768) v = -32768;
1574                     if (v >  32767) v = 32767;
1575                     *volp++ = v;
1576                 }
1577             }
1578         }
1579
1580         /* frame rate emulation */
1581         if (rate_emu) {
1582             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1583             int64_t now = av_gettime() - ist->start;
1584             if (pts > now)
1585                 usleep(pts - now);
1586         }
1587 #if CONFIG_AVFILTER
1588         frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1589             !ist->output_video_filter || avfilter_poll_frame(ist->output_video_filter->inputs[0]);
1590 #endif
1591         /* if output time reached then transcode raw format,
1592            encode packets and output them */
1593         if (start_time == 0 || ist->pts >= start_time)
1594 #if CONFIG_AVFILTER
1595         while (frame_available) {
1596             AVRational ist_pts_tb;
1597             if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ist->output_video_filter)
1598                 get_filtered_video_frame(ist->output_video_filter, &picture, &ist->picref, &ist_pts_tb);
1599             if (ist->picref)
1600                 ist->pts = av_rescale_q(ist->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1601 #endif
1602             for(i=0;i<nb_ostreams;i++) {
1603                 int frame_size;
1604
1605                 ost = ost_table[i];
1606                 if (ost->source_index == ist_index) {
1607                     os = output_files[ost->file_index];
1608
1609                     /* set the input output pts pairs */
1610                     //ost->sync_ipts = (double)(ist->pts + input_files_ts_offset[ist->file_index] - start_time)/ AV_TIME_BASE;
1611
1612                     if (ost->encoding_needed) {
1613                         av_assert0(ist->decoding_needed);
1614                         switch(ost->st->codec->codec_type) {
1615                         case AVMEDIA_TYPE_AUDIO:
1616                             do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1617                             break;
1618                         case AVMEDIA_TYPE_VIDEO:
1619 #if CONFIG_AVFILTER
1620                             if (ist->picref->video)
1621                                 ost->st->codec->sample_aspect_ratio = ist->picref->video->pixel_aspect;
1622 #endif
1623                             do_video_out(os, ost, ist, &picture, &frame_size);
1624                             if (vstats_filename && frame_size)
1625                                 do_video_stats(os, ost, frame_size);
1626                             break;
1627                         case AVMEDIA_TYPE_SUBTITLE:
1628                             do_subtitle_out(os, ost, ist, &subtitle,
1629                                             pkt->pts);
1630                             break;
1631                         default:
1632                             abort();
1633                         }
1634                     } else {
1635                         AVFrame avframe; //FIXME/XXX remove this
1636                         AVPacket opkt;
1637                         int64_t ost_tb_start_time= av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1638
1639                         av_init_packet(&opkt);
1640
1641                         if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1642                             continue;
1643
1644                         /* no reencoding needed : output the packet directly */
1645                         /* force the input stream PTS */
1646
1647                         avcodec_get_frame_defaults(&avframe);
1648                         ost->st->codec->coded_frame= &avframe;
1649                         avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1650
1651                         if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1652                             audio_size += data_size;
1653                         else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1654                             video_size += data_size;
1655                             ost->sync_opts++;
1656                         }
1657
1658                         opkt.stream_index= ost->index;
1659                         if(pkt->pts != AV_NOPTS_VALUE)
1660                             opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1661                         else
1662                             opkt.pts= AV_NOPTS_VALUE;
1663
1664                         if (pkt->dts == AV_NOPTS_VALUE)
1665                             opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1666                         else
1667                             opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1668                         opkt.dts -= ost_tb_start_time;
1669
1670                         opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1671                         opkt.flags= pkt->flags;
1672
1673                         //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1674                         if(   ost->st->codec->codec_id != CODEC_ID_H264
1675                            && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1676                            && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1677                            ) {
1678                             if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1679                                 opkt.destruct= av_destruct_packet;
1680                         } else {
1681                             opkt.data = data_buf;
1682                             opkt.size = data_size;
1683                         }
1684
1685                         write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1686                         ost->st->codec->frame_number++;
1687                         ost->frame_number++;
1688                         av_free_packet(&opkt);
1689                     }
1690                 }
1691             }
1692
1693 #if CONFIG_AVFILTER
1694             frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1695                               ist->output_video_filter && avfilter_poll_frame(ist->output_video_filter->inputs[0]);
1696             if(ist->picref)
1697                 avfilter_unref_buffer(ist->picref);
1698         }
1699 #endif
1700         av_free(buffer_to_free);
1701         /* XXX: allocate the subtitles in the codec ? */
1702         if (subtitle_to_free) {
1703             avsubtitle_free(subtitle_to_free);
1704             subtitle_to_free = NULL;
1705         }
1706     }
1707  discard_packet:
1708     if (pkt == NULL) {
1709         /* EOF handling */
1710
1711         for(i=0;i<nb_ostreams;i++) {
1712             ost = ost_table[i];
1713             if (ost->source_index == ist_index) {
1714                 AVCodecContext *enc= ost->st->codec;
1715                 os = output_files[ost->file_index];
1716
1717                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1718                     continue;
1719                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1720                     continue;
1721
1722                 if (ost->encoding_needed) {
1723                     for(;;) {
1724                         AVPacket pkt;
1725                         int fifo_bytes;
1726                         av_init_packet(&pkt);
1727                         pkt.stream_index= ost->index;
1728
1729                         switch(ost->st->codec->codec_type) {
1730                         case AVMEDIA_TYPE_AUDIO:
1731                             fifo_bytes = av_fifo_size(ost->fifo);
1732                             ret = 0;
1733                             /* encode any samples remaining in fifo */
1734                             if (fifo_bytes > 0) {
1735                                 int osize = av_get_bits_per_sample_fmt(enc->sample_fmt) >> 3;
1736                                 int fs_tmp = enc->frame_size;
1737
1738                                 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1739                                 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1740                                     enc->frame_size = fifo_bytes / (osize * enc->channels);
1741                                 } else { /* pad */
1742                                     int frame_bytes = enc->frame_size*osize*enc->channels;
1743                                     if (allocated_audio_buf_size < frame_bytes)
1744                                         ffmpeg_exit(1);
1745                                     generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1746                                 }
1747
1748                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1749                                 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1750                                                           ost->st->time_base.num, enc->sample_rate);
1751                                 enc->frame_size = fs_tmp;
1752                             }
1753                             if(ret <= 0) {
1754                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1755                             }
1756                             if (ret < 0) {
1757                                 fprintf(stderr, "Audio encoding failed\n");
1758                                 ffmpeg_exit(1);
1759                             }
1760                             audio_size += ret;
1761                             pkt.flags |= AV_PKT_FLAG_KEY;
1762                             break;
1763                         case AVMEDIA_TYPE_VIDEO:
1764                             ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1765                             if (ret < 0) {
1766                                 fprintf(stderr, "Video encoding failed\n");
1767                                 ffmpeg_exit(1);
1768                             }
1769                             video_size += ret;
1770                             if(enc->coded_frame && enc->coded_frame->key_frame)
1771                                 pkt.flags |= AV_PKT_FLAG_KEY;
1772                             if (ost->logfile && enc->stats_out) {
1773                                 fprintf(ost->logfile, "%s", enc->stats_out);
1774                             }
1775                             break;
1776                         default:
1777                             ret=-1;
1778                         }
1779
1780                         if(ret<=0)
1781                             break;
1782                         pkt.data= bit_buffer;
1783                         pkt.size= ret;
1784                         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1785                             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1786                         write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1787                     }
1788                 }
1789             }
1790         }
1791     }
1792
1793     return 0;
1794  fail_decode:
1795     return -1;
1796 }
1797
1798 static void print_sdp(AVFormatContext **avc, int n)
1799 {
1800     char sdp[2048];
1801
1802     av_sdp_create(avc, n, sdp, sizeof(sdp));
1803     printf("SDP:\n%s\n", sdp);
1804     fflush(stdout);
1805 }
1806
1807 static int copy_chapters(int infile, int outfile)
1808 {
1809     AVFormatContext *is = input_files[infile];
1810     AVFormatContext *os = output_files[outfile];
1811     int i;
1812
1813     for (i = 0; i < is->nb_chapters; i++) {
1814         AVChapter *in_ch = is->chapters[i], *out_ch;
1815         int64_t ts_off   = av_rescale_q(start_time - input_files_ts_offset[infile],
1816                                       AV_TIME_BASE_Q, in_ch->time_base);
1817         int64_t rt       = (recording_time == INT64_MAX) ? INT64_MAX :
1818                            av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
1819
1820
1821         if (in_ch->end < ts_off)
1822             continue;
1823         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
1824             break;
1825
1826         out_ch = av_mallocz(sizeof(AVChapter));
1827         if (!out_ch)
1828             return AVERROR(ENOMEM);
1829
1830         out_ch->id        = in_ch->id;
1831         out_ch->time_base = in_ch->time_base;
1832         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
1833         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
1834
1835         if (metadata_chapters_autocopy)
1836             av_metadata_copy(&out_ch->metadata, in_ch->metadata, 0);
1837
1838         os->nb_chapters++;
1839         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
1840         if (!os->chapters)
1841             return AVERROR(ENOMEM);
1842         os->chapters[os->nb_chapters - 1] = out_ch;
1843     }
1844     return 0;
1845 }
1846
1847 static void parse_forced_key_frames(char *kf, AVOutputStream *ost,
1848                                     AVCodecContext *avctx)
1849 {
1850     char *p;
1851     int n = 1, i;
1852     int64_t t;
1853
1854     for (p = kf; *p; p++)
1855         if (*p == ',')
1856             n++;
1857     ost->forced_kf_count = n;
1858     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1859     if (!ost->forced_kf_pts) {
1860         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1861         ffmpeg_exit(1);
1862     }
1863     for (i = 0; i < n; i++) {
1864         p = i ? strchr(p, ',') + 1 : kf;
1865         t = parse_time_or_die("force_key_frames", p, 1);
1866         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1867     }
1868 }
1869
1870 /*
1871  * The following code is the main loop of the file converter
1872  */
1873 static int transcode(AVFormatContext **output_files,
1874                      int nb_output_files,
1875                      AVFormatContext **input_files,
1876                      int nb_input_files,
1877                      AVStreamMap *stream_maps, int nb_stream_maps)
1878 {
1879     int ret = 0, i, j, k, n, nb_istreams = 0, nb_ostreams = 0;
1880     AVFormatContext *is, *os;
1881     AVCodecContext *codec, *icodec;
1882     AVOutputStream *ost, **ost_table = NULL;
1883     AVInputStream *ist, **ist_table = NULL;
1884     AVInputFile *file_table;
1885     char error[1024];
1886     int key;
1887     int want_sdp = 1;
1888     uint8_t no_packet[MAX_FILES]={0};
1889     int no_packet_count=0;
1890
1891     file_table= av_mallocz(nb_input_files * sizeof(AVInputFile));
1892     if (!file_table)
1893         goto fail;
1894
1895     /* input stream init */
1896     j = 0;
1897     for(i=0;i<nb_input_files;i++) {
1898         is = input_files[i];
1899         file_table[i].ist_index = j;
1900         file_table[i].nb_streams = is->nb_streams;
1901         j += is->nb_streams;
1902     }
1903     nb_istreams = j;
1904
1905     ist_table = av_mallocz(nb_istreams * sizeof(AVInputStream *));
1906     if (!ist_table)
1907         goto fail;
1908
1909     for(i=0;i<nb_istreams;i++) {
1910         ist = av_mallocz(sizeof(AVInputStream));
1911         if (!ist)
1912             goto fail;
1913         ist_table[i] = ist;
1914     }
1915     j = 0;
1916     for(i=0;i<nb_input_files;i++) {
1917         is = input_files[i];
1918         for(k=0;k<is->nb_streams;k++) {
1919             ist = ist_table[j++];
1920             ist->st = is->streams[k];
1921             ist->file_index = i;
1922             ist->index = k;
1923             ist->discard = 1; /* the stream is discarded by default
1924                                  (changed later) */
1925
1926             if (rate_emu) {
1927                 ist->start = av_gettime();
1928             }
1929         }
1930     }
1931
1932     /* output stream init */
1933     nb_ostreams = 0;
1934     for(i=0;i<nb_output_files;i++) {
1935         os = output_files[i];
1936         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1937             av_dump_format(output_files[i], i, output_files[i]->filename, 1);
1938             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
1939             ret = AVERROR(EINVAL);
1940             goto fail;
1941         }
1942         nb_ostreams += os->nb_streams;
1943     }
1944     if (nb_stream_maps > 0 && nb_stream_maps != nb_ostreams) {
1945         fprintf(stderr, "Number of stream maps must match number of output streams\n");
1946         ret = AVERROR(EINVAL);
1947         goto fail;
1948     }
1949
1950     /* Sanity check the mapping args -- do the input files & streams exist? */
1951     for(i=0;i<nb_stream_maps;i++) {
1952         int fi = stream_maps[i].file_index;
1953         int si = stream_maps[i].stream_index;
1954
1955         if (fi < 0 || fi > nb_input_files - 1 ||
1956             si < 0 || si > file_table[fi].nb_streams - 1) {
1957             fprintf(stderr,"Could not find input stream #%d.%d\n", fi, si);
1958             ret = AVERROR(EINVAL);
1959             goto fail;
1960         }
1961         fi = stream_maps[i].sync_file_index;
1962         si = stream_maps[i].sync_stream_index;
1963         if (fi < 0 || fi > nb_input_files - 1 ||
1964             si < 0 || si > file_table[fi].nb_streams - 1) {
1965             fprintf(stderr,"Could not find sync stream #%d.%d\n", fi, si);
1966             ret = AVERROR(EINVAL);
1967             goto fail;
1968         }
1969     }
1970
1971     ost_table = av_mallocz(sizeof(AVOutputStream *) * nb_ostreams);
1972     if (!ost_table)
1973         goto fail;
1974     n = 0;
1975     for(k=0;k<nb_output_files;k++) {
1976         os = output_files[k];
1977         for(i=0;i<os->nb_streams;i++,n++) {
1978             int found;
1979             ost = ost_table[n] = output_streams_for_file[k][i];
1980             ost->st = os->streams[i];
1981             if (nb_stream_maps > 0) {
1982                 ost->source_index = file_table[stream_maps[n].file_index].ist_index +
1983                     stream_maps[n].stream_index;
1984
1985                 /* Sanity check that the stream types match */
1986                 if (ist_table[ost->source_index]->st->codec->codec_type != ost->st->codec->codec_type) {
1987                     int i= ost->file_index;
1988                     av_dump_format(output_files[i], i, output_files[i]->filename, 1);
1989                     fprintf(stderr, "Codec type mismatch for mapping #%d.%d -> #%d.%d\n",
1990                         stream_maps[n].file_index, stream_maps[n].stream_index,
1991                         ost->file_index, ost->index);
1992                     ffmpeg_exit(1);
1993                 }
1994
1995             } else {
1996                 int best_nb_frames=-1;
1997                 /* get corresponding input stream index : we select the first one with the right type */
1998                 found = 0;
1999                 for(j=0;j<nb_istreams;j++) {
2000                     int skip=0;
2001                     ist = ist_table[j];
2002                     if(opt_programid){
2003                         int pi,si;
2004                         AVFormatContext *f= input_files[ ist->file_index ];
2005                         skip=1;
2006                         for(pi=0; pi<f->nb_programs; pi++){
2007                             AVProgram *p= f->programs[pi];
2008                             if(p->id == opt_programid)
2009                                 for(si=0; si<p->nb_stream_indexes; si++){
2010                                     if(f->streams[ p->stream_index[si] ] == ist->st)
2011                                         skip=0;
2012                                 }
2013                         }
2014                     }
2015                     if (ist->discard && ist->st->discard != AVDISCARD_ALL && !skip &&
2016                         ist->st->codec->codec_type == ost->st->codec->codec_type) {
2017                         if(best_nb_frames < ist->st->codec_info_nb_frames){
2018                             best_nb_frames= ist->st->codec_info_nb_frames;
2019                             ost->source_index = j;
2020                             found = 1;
2021                         }
2022                     }
2023                 }
2024
2025                 if (!found) {
2026                     if(! opt_programid) {
2027                         /* try again and reuse existing stream */
2028                         for(j=0;j<nb_istreams;j++) {
2029                             ist = ist_table[j];
2030                             if (   ist->st->codec->codec_type == ost->st->codec->codec_type
2031                                 && ist->st->discard != AVDISCARD_ALL) {
2032                                 ost->source_index = j;
2033                                 found = 1;
2034                             }
2035                         }
2036                     }
2037                     if (!found) {
2038                         int i= ost->file_index;
2039                         av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2040                         fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",
2041                                 ost->file_index, ost->index);
2042                         ffmpeg_exit(1);
2043                     }
2044                 }
2045             }
2046             ist = ist_table[ost->source_index];
2047             ist->discard = 0;
2048             ost->sync_ist = (nb_stream_maps > 0) ?
2049                 ist_table[file_table[stream_maps[n].sync_file_index].ist_index +
2050                          stream_maps[n].sync_stream_index] : ist;
2051         }
2052     }
2053
2054     /* for each output stream, we compute the right encoding parameters */
2055     for(i=0;i<nb_ostreams;i++) {
2056         ost = ost_table[i];
2057         os = output_files[ost->file_index];
2058         ist = ist_table[ost->source_index];
2059
2060         codec = ost->st->codec;
2061         icodec = ist->st->codec;
2062
2063         if (metadata_streams_autocopy)
2064             av_metadata_copy(&ost->st->metadata, ist->st->metadata,
2065                              AV_METADATA_DONT_OVERWRITE);
2066
2067         ost->st->disposition = ist->st->disposition;
2068         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2069         codec->chroma_sample_location = icodec->chroma_sample_location;
2070
2071         if (ost->st->stream_copy) {
2072             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2073
2074             if (extra_size > INT_MAX)
2075                 goto fail;
2076
2077             /* if stream_copy is selected, no need to decode or encode */
2078             codec->codec_id = icodec->codec_id;
2079             codec->codec_type = icodec->codec_type;
2080
2081             if(!codec->codec_tag){
2082                 if(   !os->oformat->codec_tag
2083                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2084                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2085                     codec->codec_tag = icodec->codec_tag;
2086             }
2087
2088             codec->bit_rate = icodec->bit_rate;
2089             codec->rc_max_rate    = icodec->rc_max_rate;
2090             codec->rc_buffer_size = icodec->rc_buffer_size;
2091             codec->extradata= av_mallocz(extra_size);
2092             if (!codec->extradata)
2093                 goto fail;
2094             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2095             codec->extradata_size= icodec->extradata_size;
2096             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){
2097                 codec->time_base = icodec->time_base;
2098                 codec->time_base.num *= icodec->ticks_per_frame;
2099                 av_reduce(&codec->time_base.num, &codec->time_base.den,
2100                           codec->time_base.num, codec->time_base.den, INT_MAX);
2101             }else
2102                 codec->time_base = ist->st->time_base;
2103             switch(codec->codec_type) {
2104             case AVMEDIA_TYPE_AUDIO:
2105                 if(audio_volume != 256) {
2106                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2107                     ffmpeg_exit(1);
2108                 }
2109                 codec->channel_layout = icodec->channel_layout;
2110                 codec->sample_rate = icodec->sample_rate;
2111                 codec->channels = icodec->channels;
2112                 codec->frame_size = icodec->frame_size;
2113                 codec->audio_service_type = icodec->audio_service_type;
2114                 codec->block_align= icodec->block_align;
2115                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2116                     codec->block_align= 0;
2117                 if(codec->codec_id == CODEC_ID_AC3)
2118                     codec->block_align= 0;
2119                 break;
2120             case AVMEDIA_TYPE_VIDEO:
2121                 codec->pix_fmt = icodec->pix_fmt;
2122                 codec->width = icodec->width;
2123                 codec->height = icodec->height;
2124                 codec->has_b_frames = icodec->has_b_frames;
2125                 break;
2126             case AVMEDIA_TYPE_SUBTITLE:
2127                 codec->width = icodec->width;
2128                 codec->height = icodec->height;
2129                 break;
2130             default:
2131                 abort();
2132             }
2133         } else {
2134             switch(codec->codec_type) {
2135             case AVMEDIA_TYPE_AUDIO:
2136                 ost->fifo= av_fifo_alloc(1024);
2137                 if(!ost->fifo)
2138                     goto fail;
2139                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2140                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2141                 icodec->request_channels = codec->channels;
2142                 ist->decoding_needed = 1;
2143                 ost->encoding_needed = 1;
2144                 ost->resample_sample_fmt  = icodec->sample_fmt;
2145                 ost->resample_sample_rate = icodec->sample_rate;
2146                 ost->resample_channels    = icodec->channels;
2147                 break;
2148             case AVMEDIA_TYPE_VIDEO:
2149                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2150                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2151                     ffmpeg_exit(1);
2152                 }
2153                 ost->video_resample = (codec->width != icodec->width   ||
2154                                        codec->height != icodec->height ||
2155                         (codec->pix_fmt != icodec->pix_fmt));
2156                 if (ost->video_resample) {
2157 #if !CONFIG_AVFILTER
2158                     avcodec_get_frame_defaults(&ost->pict_tmp);
2159                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2160                                          codec->width, codec->height)) {
2161                         fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
2162                         ffmpeg_exit(1);
2163                     }
2164                     sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
2165                     ost->img_resample_ctx = sws_getContext(
2166                         icodec->width,
2167                         icodec->height,
2168                             icodec->pix_fmt,
2169                             codec->width,
2170                             codec->height,
2171                             codec->pix_fmt,
2172                             sws_flags, NULL, NULL, NULL);
2173                     if (ost->img_resample_ctx == NULL) {
2174                         fprintf(stderr, "Cannot get resampling context\n");
2175                         ffmpeg_exit(1);
2176                     }
2177
2178                     ost->original_height = icodec->height;
2179                     ost->original_width  = icodec->width;
2180 #endif
2181                     codec->bits_per_raw_sample= 0;
2182                 }
2183                 ost->resample_height = icodec->height;
2184                 ost->resample_width  = icodec->width;
2185                 ost->resample_pix_fmt= icodec->pix_fmt;
2186                 ost->encoding_needed = 1;
2187                 ist->decoding_needed = 1;
2188
2189 #if CONFIG_AVFILTER
2190                 if (configure_filters(ist, ost)) {
2191                     fprintf(stderr, "Error opening filters!\n");
2192                     exit(1);
2193                 }
2194 #endif
2195                 break;
2196             case AVMEDIA_TYPE_SUBTITLE:
2197                 ost->encoding_needed = 1;
2198                 ist->decoding_needed = 1;
2199                 break;
2200             default:
2201                 abort();
2202                 break;
2203             }
2204             /* two pass mode */
2205             if (ost->encoding_needed &&
2206                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2207                 char logfilename[1024];
2208                 FILE *f;
2209
2210                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2211                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2212                          i);
2213                 if (codec->flags & CODEC_FLAG_PASS1) {
2214                     f = fopen(logfilename, "wb");
2215                     if (!f) {
2216                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2217                         ffmpeg_exit(1);
2218                     }
2219                     ost->logfile = f;
2220                 } else {
2221                     char  *logbuffer;
2222                     size_t logbuffer_size;
2223                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2224                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2225                         ffmpeg_exit(1);
2226                     }
2227                     codec->stats_in = logbuffer;
2228                 }
2229             }
2230         }
2231         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2232             int size= codec->width * codec->height;
2233             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2234         }
2235     }
2236
2237     if (!bit_buffer)
2238         bit_buffer = av_malloc(bit_buffer_size);
2239     if (!bit_buffer) {
2240         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2241                 bit_buffer_size);
2242         ret = AVERROR(ENOMEM);
2243         goto fail;
2244     }
2245
2246     /* open each encoder */
2247     for(i=0;i<nb_ostreams;i++) {
2248         ost = ost_table[i];
2249         if (ost->encoding_needed) {
2250             AVCodec *codec = i < nb_output_codecs ? output_codecs[i] : NULL;
2251             AVCodecContext *dec = ist_table[ost->source_index]->st->codec;
2252             if (!codec)
2253                 codec = avcodec_find_encoder(ost->st->codec->codec_id);
2254             if (!codec) {
2255                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2256                          ost->st->codec->codec_id, ost->file_index, ost->index);
2257                 ret = AVERROR(EINVAL);
2258                 goto dump_format;
2259             }
2260             if (dec->subtitle_header) {
2261                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2262                 if (!ost->st->codec->subtitle_header) {
2263                     ret = AVERROR(ENOMEM);
2264                     goto dump_format;
2265                 }
2266                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2267                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2268             }
2269             if (avcodec_open(ost->st->codec, codec) < 0) {
2270                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2271                         ost->file_index, ost->index);
2272                 ret = AVERROR(EINVAL);
2273                 goto dump_format;
2274             }
2275             extra_size += ost->st->codec->extradata_size;
2276         }
2277     }
2278
2279     /* open each decoder */
2280     for(i=0;i<nb_istreams;i++) {
2281         ist = ist_table[i];
2282         if (ist->decoding_needed) {
2283             AVCodec *codec = i < nb_input_codecs ? input_codecs[i] : NULL;
2284             if (!codec)
2285                 codec = avcodec_find_decoder(ist->st->codec->codec_id);
2286             if (!codec) {
2287                 snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
2288                         ist->st->codec->codec_id, ist->file_index, ist->index);
2289                 ret = AVERROR(EINVAL);
2290                 goto dump_format;
2291             }
2292             if (avcodec_open(ist->st->codec, codec) < 0) {
2293                 snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
2294                         ist->file_index, ist->index);
2295                 ret = AVERROR(EINVAL);
2296                 goto dump_format;
2297             }
2298             //if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2299             //    ist->st->codec->flags |= CODEC_FLAG_REPEAT_FIELD;
2300         }
2301     }
2302
2303     /* init pts */
2304     for(i=0;i<nb_istreams;i++) {
2305         AVStream *st;
2306         ist = ist_table[i];
2307         st= ist->st;
2308         ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
2309         ist->next_pts = AV_NOPTS_VALUE;
2310         init_pts_correction(&ist->pts_ctx);
2311         ist->is_start = 1;
2312     }
2313
2314     /* set meta data information from input file if required */
2315     for (i=0;i<nb_meta_data_maps;i++) {
2316         AVFormatContext *files[2];
2317         AVMetadata      **meta[2];
2318         int j;
2319
2320 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
2321         if ((index) < 0 || (index) >= (nb_elems)) {\
2322             snprintf(error, sizeof(error), "Invalid %s index %d while processing metadata maps\n",\
2323                      (desc), (index));\
2324             ret = AVERROR(EINVAL);\
2325             goto dump_format;\
2326         }
2327
2328         int out_file_index = meta_data_maps[i][0].file;
2329         int in_file_index = meta_data_maps[i][1].file;
2330         if (in_file_index < 0 || out_file_index < 0)
2331             continue;
2332         METADATA_CHECK_INDEX(out_file_index, nb_output_files, "output file")
2333         METADATA_CHECK_INDEX(in_file_index, nb_input_files, "input file")
2334
2335         files[0] = output_files[out_file_index];
2336         files[1] = input_files[in_file_index];
2337
2338         for (j = 0; j < 2; j++) {
2339             AVMetaDataMap *map = &meta_data_maps[i][j];
2340
2341             switch (map->type) {
2342             case 'g':
2343                 meta[j] = &files[j]->metadata;
2344                 break;
2345             case 's':
2346                 METADATA_CHECK_INDEX(map->index, files[j]->nb_streams, "stream")
2347                 meta[j] = &files[j]->streams[map->index]->metadata;
2348                 break;
2349             case 'c':
2350                 METADATA_CHECK_INDEX(map->index, files[j]->nb_chapters, "chapter")
2351                 meta[j] = &files[j]->chapters[map->index]->metadata;
2352                 break;
2353             case 'p':
2354                 METADATA_CHECK_INDEX(map->index, files[j]->nb_programs, "program")
2355                 meta[j] = &files[j]->programs[map->index]->metadata;
2356                 break;
2357             }
2358         }
2359
2360         av_metadata_copy(meta[0], *meta[1], AV_METADATA_DONT_OVERWRITE);
2361     }
2362
2363     /* copy global metadata by default */
2364     if (metadata_global_autocopy) {
2365
2366         for (i = 0; i < nb_output_files; i++)
2367             av_metadata_copy(&output_files[i]->metadata, input_files[0]->metadata,
2368                              AV_METADATA_DONT_OVERWRITE);
2369     }
2370
2371     /* copy chapters according to chapter maps */
2372     for (i = 0; i < nb_chapter_maps; i++) {
2373         int infile  = chapter_maps[i].in_file;
2374         int outfile = chapter_maps[i].out_file;
2375
2376         if (infile < 0 || outfile < 0)
2377             continue;
2378         if (infile >= nb_input_files) {
2379             snprintf(error, sizeof(error), "Invalid input file index %d in chapter mapping.\n", infile);
2380             ret = AVERROR(EINVAL);
2381             goto dump_format;
2382         }
2383         if (outfile >= nb_output_files) {
2384             snprintf(error, sizeof(error), "Invalid output file index %d in chapter mapping.\n",outfile);
2385             ret = AVERROR(EINVAL);
2386             goto dump_format;
2387         }
2388         copy_chapters(infile, outfile);
2389     }
2390
2391     /* copy chapters from the first input file that has them*/
2392     if (!nb_chapter_maps)
2393         for (i = 0; i < nb_input_files; i++) {
2394             if (!input_files[i]->nb_chapters)
2395                 continue;
2396
2397             for (j = 0; j < nb_output_files; j++)
2398                 if ((ret = copy_chapters(i, j)) < 0)
2399                     goto dump_format;
2400             break;
2401         }
2402
2403     /* open files and write file headers */
2404     for(i=0;i<nb_output_files;i++) {
2405         os = output_files[i];
2406         if (av_write_header(os) < 0) {
2407             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2408             ret = AVERROR(EINVAL);
2409             goto dump_format;
2410         }
2411         if (strcmp(output_files[i]->oformat->name, "rtp")) {
2412             want_sdp = 0;
2413         }
2414     }
2415
2416  dump_format:
2417     /* dump the file output parameters - cannot be done before in case
2418        of stream copy */
2419     for(i=0;i<nb_output_files;i++) {
2420         av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2421     }
2422
2423     /* dump the stream mapping */
2424     if (verbose >= 0) {
2425         fprintf(stderr, "Stream mapping:\n");
2426         for(i=0;i<nb_ostreams;i++) {
2427             ost = ost_table[i];
2428             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2429                     ist_table[ost->source_index]->file_index,
2430                     ist_table[ost->source_index]->index,
2431                     ost->file_index,
2432                     ost->index);
2433             if (ost->sync_ist != ist_table[ost->source_index])
2434                 fprintf(stderr, " [sync #%d.%d]",
2435                         ost->sync_ist->file_index,
2436                         ost->sync_ist->index);
2437             fprintf(stderr, "\n");
2438         }
2439     }
2440
2441     if (ret) {
2442         fprintf(stderr, "%s\n", error);
2443         goto fail;
2444     }
2445
2446     if (want_sdp) {
2447         print_sdp(output_files, nb_output_files);
2448     }
2449
2450     if (!using_stdin && verbose >= 0) {
2451 #if HAVE_KBHIT
2452         fprintf(stderr, "Press [q] to stop encoding\n");
2453 #else
2454         fprintf(stderr, "Press ctrl-c to stop encoding\n");
2455 #endif
2456         avio_set_interrupt_cb(decode_interrupt_cb);
2457     }
2458     term_init();
2459
2460     timer_start = av_gettime();
2461
2462     for(; received_sigterm == 0;) {
2463         int file_index, ist_index;
2464         AVPacket pkt;
2465         double ipts_min;
2466         double opts_min;
2467
2468     redo:
2469         ipts_min= 1e100;
2470         opts_min= 1e100;
2471         /* if 'q' pressed, exits */
2472         if (!using_stdin) {
2473             if (q_pressed)
2474                 break;
2475             /* read_key() returns 0 on EOF */
2476             key = read_key();
2477             if (key == 'q')
2478                 break;
2479         }
2480
2481         /* select the stream that we must read now by looking at the
2482            smallest output pts */
2483         file_index = -1;
2484         for(i=0;i<nb_ostreams;i++) {
2485             double ipts, opts;
2486             ost = ost_table[i];
2487             os = output_files[ost->file_index];
2488             ist = ist_table[ost->source_index];
2489             if(ist->is_past_recording_time || no_packet[ist->file_index])
2490                 continue;
2491                 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2492             ipts = (double)ist->pts;
2493             if (!file_table[ist->file_index].eof_reached){
2494                 if(ipts < ipts_min) {
2495                     ipts_min = ipts;
2496                     if(input_sync ) file_index = ist->file_index;
2497                 }
2498                 if(opts < opts_min) {
2499                     opts_min = opts;
2500                     if(!input_sync) file_index = ist->file_index;
2501                 }
2502             }
2503             if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
2504                 file_index= -1;
2505                 break;
2506             }
2507         }
2508         /* if none, if is finished */
2509         if (file_index < 0) {
2510             if(no_packet_count){
2511                 no_packet_count=0;
2512                 memset(no_packet, 0, sizeof(no_packet));
2513                 usleep(10000);
2514                 continue;
2515             }
2516             break;
2517         }
2518
2519         /* finish if limit size exhausted */
2520         if (limit_filesize != 0 && limit_filesize <= avio_tell(output_files[0]->pb))
2521             break;
2522
2523         /* read a frame from it and output it in the fifo */
2524         is = input_files[file_index];
2525         ret= av_read_frame(is, &pkt);
2526         if(ret == AVERROR(EAGAIN)){
2527             no_packet[file_index]=1;
2528             no_packet_count++;
2529             continue;
2530         }
2531         if (ret < 0) {
2532             file_table[file_index].eof_reached = 1;
2533             if (opt_shortest)
2534                 break;
2535             else
2536                 continue;
2537         }
2538
2539         no_packet_count=0;
2540         memset(no_packet, 0, sizeof(no_packet));
2541
2542         if (do_pkt_dump) {
2543             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2544                              is->streams[pkt.stream_index]);
2545         }
2546         /* the following test is needed in case new streams appear
2547            dynamically in stream : we ignore them */
2548         if (pkt.stream_index >= file_table[file_index].nb_streams)
2549             goto discard_packet;
2550         ist_index = file_table[file_index].ist_index + pkt.stream_index;
2551         ist = ist_table[ist_index];
2552         if (ist->discard)
2553             goto discard_packet;
2554
2555         if (pkt.dts != AV_NOPTS_VALUE)
2556             pkt.dts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2557         if (pkt.pts != AV_NOPTS_VALUE)
2558             pkt.pts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2559
2560         if (pkt.stream_index < nb_input_files_ts_scale[file_index]
2561             && input_files_ts_scale[file_index][pkt.stream_index]){
2562             if(pkt.pts != AV_NOPTS_VALUE)
2563                 pkt.pts *= input_files_ts_scale[file_index][pkt.stream_index];
2564             if(pkt.dts != AV_NOPTS_VALUE)
2565                 pkt.dts *= input_files_ts_scale[file_index][pkt.stream_index];
2566         }
2567
2568 //        fprintf(stderr, "next:%"PRId64" dts:%"PRId64" off:%"PRId64" %d\n", ist->next_pts, pkt.dts, input_files_ts_offset[ist->file_index], ist->st->codec->codec_type);
2569         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2570             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2571             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2572             int64_t delta= pkt_dts - ist->next_pts;
2573             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2574                 input_files_ts_offset[ist->file_index]-= delta;
2575                 if (verbose > 2)
2576                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n", delta, input_files_ts_offset[ist->file_index]);
2577                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2578                 if(pkt.pts != AV_NOPTS_VALUE)
2579                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2580             }
2581         }
2582
2583         /* finish if recording time exhausted */
2584         if (recording_time != INT64_MAX &&
2585             av_compare_ts(pkt.pts, ist->st->time_base, recording_time + start_time, (AVRational){1, 1000000}) >= 0) {
2586             ist->is_past_recording_time = 1;
2587             goto discard_packet;
2588         }
2589
2590         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->index, pkt.size);
2591         if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
2592
2593             if (verbose >= 0)
2594                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2595                         ist->file_index, ist->index);
2596             if (exit_on_error)
2597                 ffmpeg_exit(1);
2598             av_free_packet(&pkt);
2599             goto redo;
2600         }
2601
2602     discard_packet:
2603         av_free_packet(&pkt);
2604
2605         /* dump report by using the output first video and audio streams */
2606         print_report(output_files, ost_table, nb_ostreams, 0);
2607     }
2608
2609     /* at the end of stream, we must flush the decoder buffers */
2610     for(i=0;i<nb_istreams;i++) {
2611         ist = ist_table[i];
2612         if (ist->decoding_needed) {
2613             output_packet(ist, i, ost_table, nb_ostreams, NULL);
2614         }
2615     }
2616
2617     term_exit();
2618
2619     /* write the trailer if needed and close file */
2620     for(i=0;i<nb_output_files;i++) {
2621         os = output_files[i];
2622         av_write_trailer(os);
2623     }
2624
2625     /* dump report by using the first video and audio streams */
2626     print_report(output_files, ost_table, nb_ostreams, 1);
2627
2628     /* close each encoder */
2629     for(i=0;i<nb_ostreams;i++) {
2630         ost = ost_table[i];
2631         if (ost->encoding_needed) {
2632             av_freep(&ost->st->codec->stats_in);
2633             avcodec_close(ost->st->codec);
2634         }
2635     }
2636
2637     /* close each decoder */
2638     for(i=0;i<nb_istreams;i++) {
2639         ist = ist_table[i];
2640         if (ist->decoding_needed) {
2641             avcodec_close(ist->st->codec);
2642         }
2643     }
2644 #if CONFIG_AVFILTER
2645     avfilter_graph_free(&graph);
2646 #endif
2647
2648     /* finished ! */
2649     ret = 0;
2650
2651  fail:
2652     av_freep(&bit_buffer);
2653     av_free(file_table);
2654
2655     if (ist_table) {
2656         for(i=0;i<nb_istreams;i++) {
2657             ist = ist_table[i];
2658             av_free(ist);
2659         }
2660         av_free(ist_table);
2661     }
2662     if (ost_table) {
2663         for(i=0;i<nb_ostreams;i++) {
2664             ost = ost_table[i];
2665             if (ost) {
2666                 if (ost->st->stream_copy)
2667                     av_freep(&ost->st->codec->extradata);
2668                 if (ost->logfile) {
2669                     fclose(ost->logfile);
2670                     ost->logfile = NULL;
2671                 }
2672                 av_fifo_free(ost->fifo); /* works even if fifo is not
2673                                              initialized but set to zero */
2674                 av_freep(&ost->st->codec->subtitle_header);
2675                 av_free(ost->pict_tmp.data[0]);
2676                 av_free(ost->forced_kf_pts);
2677                 if (ost->video_resample)
2678                     sws_freeContext(ost->img_resample_ctx);
2679                 if (ost->resample)
2680                     audio_resample_close(ost->resample);
2681                 if (ost->reformat_ctx)
2682                     av_audio_convert_free(ost->reformat_ctx);
2683                 av_free(ost);
2684             }
2685         }
2686         av_free(ost_table);
2687     }
2688     return ret;
2689 }
2690
2691 static void opt_format(const char *arg)
2692 {
2693     last_asked_format = arg;
2694 }
2695
2696 static void opt_video_rc_override_string(const char *arg)
2697 {
2698     video_rc_override_string = arg;
2699 }
2700
2701 static int opt_me_threshold(const char *opt, const char *arg)
2702 {
2703     me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2704     return 0;
2705 }
2706
2707 static int opt_verbose(const char *opt, const char *arg)
2708 {
2709     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2710     return 0;
2711 }
2712
2713 static int opt_frame_rate(const char *opt, const char *arg)
2714 {
2715     if (av_parse_video_rate(&frame_rate, arg) < 0) {
2716         fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2717         ffmpeg_exit(1);
2718     }
2719     return 0;
2720 }
2721
2722 static int opt_bitrate(const char *opt, const char *arg)
2723 {
2724     int codec_type = opt[0]=='a' ? AVMEDIA_TYPE_AUDIO : AVMEDIA_TYPE_VIDEO;
2725
2726     opt_default(opt, arg);
2727
2728     if (av_get_int(avcodec_opts[codec_type], "b", NULL) < 1000)
2729         fprintf(stderr, "WARNING: The bitrate parameter is set too low. It takes bits/s as argument, not kbits/s\n");
2730
2731     return 0;
2732 }
2733
2734 static int opt_frame_crop(const char *opt, const char *arg)
2735 {
2736     fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
2737     return AVERROR(EINVAL);
2738 }
2739
2740 static void opt_frame_size(const char *arg)
2741 {
2742     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2743         fprintf(stderr, "Incorrect frame size\n");
2744         ffmpeg_exit(1);
2745     }
2746 }
2747
2748 static int opt_pad(const char *opt, const char *arg) {
2749     fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2750     return -1;
2751 }
2752
2753 static void opt_frame_pix_fmt(const char *arg)
2754 {
2755     if (strcmp(arg, "list")) {
2756         frame_pix_fmt = av_get_pix_fmt(arg);
2757         if (frame_pix_fmt == PIX_FMT_NONE) {
2758             fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2759             ffmpeg_exit(1);
2760         }
2761     } else {
2762         show_pix_fmts();
2763         ffmpeg_exit(0);
2764     }
2765 }
2766
2767 static void opt_frame_aspect_ratio(const char *arg)
2768 {
2769     int x = 0, y = 0;
2770     double ar = 0;
2771     const char *p;
2772     char *end;
2773
2774     p = strchr(arg, ':');
2775     if (p) {
2776         x = strtol(arg, &end, 10);
2777         if (end == p)
2778             y = strtol(end+1, &end, 10);
2779         if (x > 0 && y > 0)
2780             ar = (double)x / (double)y;
2781     } else
2782         ar = strtod(arg, NULL);
2783
2784     if (!ar) {
2785         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2786         ffmpeg_exit(1);
2787     }
2788     frame_aspect_ratio = ar;
2789 }
2790
2791 static int opt_metadata(const char *opt, const char *arg)
2792 {
2793     char *mid= strchr(arg, '=');
2794
2795     if(!mid){
2796         fprintf(stderr, "Missing =\n");
2797         ffmpeg_exit(1);
2798     }
2799     *mid++= 0;
2800
2801     av_metadata_set2(&metadata, arg, mid, 0);
2802
2803     return 0;
2804 }
2805
2806 static void opt_qscale(const char *arg)
2807 {
2808     video_qscale = atof(arg);
2809     if (video_qscale <= 0 ||
2810         video_qscale > 255) {
2811         fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2812         ffmpeg_exit(1);
2813     }
2814 }
2815
2816 static void opt_top_field_first(const char *arg)
2817 {
2818     top_field_first= atoi(arg);
2819 }
2820
2821 static int opt_thread_count(const char *opt, const char *arg)
2822 {
2823     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2824 #if !HAVE_THREADS
2825     if (verbose >= 0)
2826         fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2827 #endif
2828     return 0;
2829 }
2830
2831 static void opt_audio_sample_fmt(const char *arg)
2832 {
2833     if (strcmp(arg, "list")) {
2834         audio_sample_fmt = av_get_sample_fmt(arg);
2835         if (audio_sample_fmt == AV_SAMPLE_FMT_NONE) {
2836             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg);
2837             ffmpeg_exit(1);
2838         }
2839     } else {
2840         list_fmts(av_get_sample_fmt_string, AV_SAMPLE_FMT_NB);
2841         ffmpeg_exit(0);
2842     }
2843 }
2844
2845 static int opt_audio_rate(const char *opt, const char *arg)
2846 {
2847     audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2848     return 0;
2849 }
2850
2851 static int opt_audio_channels(const char *opt, const char *arg)
2852 {
2853     audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2854     return 0;
2855 }
2856
2857 static void opt_video_channel(const char *arg)
2858 {
2859     video_channel = strtol(arg, NULL, 0);
2860 }
2861
2862 static void opt_video_standard(const char *arg)
2863 {
2864     video_standard = av_strdup(arg);
2865 }
2866
2867 static void opt_codec(int *pstream_copy, char **pcodec_name,
2868                       int codec_type, const char *arg)
2869 {
2870     av_freep(pcodec_name);
2871     if (!strcmp(arg, "copy")) {
2872         *pstream_copy = 1;
2873     } else {
2874         *pcodec_name = av_strdup(arg);
2875     }
2876 }
2877
2878 static void opt_audio_codec(const char *arg)
2879 {
2880     opt_codec(&audio_stream_copy, &audio_codec_name, AVMEDIA_TYPE_AUDIO, arg);
2881 }
2882
2883 static void opt_video_codec(const char *arg)
2884 {
2885     opt_codec(&video_stream_copy, &video_codec_name, AVMEDIA_TYPE_VIDEO, arg);
2886 }
2887
2888 static void opt_subtitle_codec(const char *arg)
2889 {
2890     opt_codec(&subtitle_stream_copy, &subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, arg);
2891 }
2892
2893 static int opt_codec_tag(const char *opt, const char *arg)
2894 {
2895     char *tail;
2896     uint32_t *codec_tag;
2897
2898     codec_tag = !strcmp(opt, "atag") ? &audio_codec_tag :
2899                 !strcmp(opt, "vtag") ? &video_codec_tag :
2900                 !strcmp(opt, "stag") ? &subtitle_codec_tag : NULL;
2901     if (!codec_tag)
2902         return -1;
2903
2904     *codec_tag = strtol(arg, &tail, 0);
2905     if (!tail || *tail)
2906         *codec_tag = AV_RL32(arg);
2907
2908     return 0;
2909 }
2910
2911 static void opt_map(const char *arg)
2912 {
2913     AVStreamMap *m;
2914     char *p;
2915
2916     stream_maps = grow_array(stream_maps, sizeof(*stream_maps), &nb_stream_maps, nb_stream_maps + 1);
2917     m = &stream_maps[nb_stream_maps-1];
2918
2919     m->file_index = strtol(arg, &p, 0);
2920     if (*p)
2921         p++;
2922
2923     m->stream_index = strtol(p, &p, 0);
2924     if (*p) {
2925         p++;
2926         m->sync_file_index = strtol(p, &p, 0);
2927         if (*p)
2928             p++;
2929         m->sync_stream_index = strtol(p, &p, 0);
2930     } else {
2931         m->sync_file_index = m->file_index;
2932         m->sync_stream_index = m->stream_index;
2933     }
2934 }
2935
2936 static void parse_meta_type(char *arg, char *type, int *index, char **endptr)
2937 {
2938     *endptr = arg;
2939     if (*arg == ',') {
2940         *type = *(++arg);
2941         switch (*arg) {
2942         case 'g':
2943             break;
2944         case 's':
2945         case 'c':
2946         case 'p':
2947             *index = strtol(++arg, endptr, 0);
2948             break;
2949         default:
2950             fprintf(stderr, "Invalid metadata type %c.\n", *arg);
2951             ffmpeg_exit(1);
2952         }
2953     } else
2954         *type = 'g';
2955 }
2956
2957 static void opt_map_metadata(const char *arg)
2958 {
2959     AVMetaDataMap *m, *m1;
2960     char *p;
2961
2962     meta_data_maps = grow_array(meta_data_maps, sizeof(*meta_data_maps),
2963                                 &nb_meta_data_maps, nb_meta_data_maps + 1);
2964
2965     m = &meta_data_maps[nb_meta_data_maps - 1][0];
2966     m->file = strtol(arg, &p, 0);
2967     parse_meta_type(p, &m->type, &m->index, &p);
2968     if (*p)
2969         p++;
2970
2971     m1 = &meta_data_maps[nb_meta_data_maps - 1][1];
2972     m1->file = strtol(p, &p, 0);
2973     parse_meta_type(p, &m1->type, &m1->index, &p);
2974
2975     if (m->type == 'g' || m1->type == 'g')
2976         metadata_global_autocopy = 0;
2977     if (m->type == 's' || m1->type == 's')
2978         metadata_streams_autocopy = 0;
2979     if (m->type == 'c' || m1->type == 'c')
2980         metadata_chapters_autocopy = 0;
2981 }
2982
2983 static void opt_map_meta_data(const char *arg)
2984 {
2985     fprintf(stderr, "-map_meta_data is deprecated and will be removed soon. "
2986                     "Use -map_metadata instead.\n");
2987     opt_map_metadata(arg);
2988 }
2989
2990 static void opt_map_chapters(const char *arg)
2991 {
2992     AVChapterMap *c;
2993     char *p;
2994
2995     chapter_maps = grow_array(chapter_maps, sizeof(*chapter_maps), &nb_chapter_maps,
2996                               nb_chapter_maps + 1);
2997     c = &chapter_maps[nb_chapter_maps - 1];
2998     c->out_file = strtol(arg, &p, 0);
2999     if (*p)
3000         p++;
3001
3002     c->in_file = strtol(p, &p, 0);
3003 }
3004
3005 static void opt_input_ts_scale(const char *arg)
3006 {
3007     unsigned int stream;
3008     double scale;
3009     char *p;
3010
3011     stream = strtol(arg, &p, 0);
3012     if (*p)
3013         p++;
3014     scale= strtod(p, &p);
3015
3016     if(stream >= MAX_STREAMS)
3017         ffmpeg_exit(1);
3018
3019     input_files_ts_scale[nb_input_files] = grow_array(input_files_ts_scale[nb_input_files], sizeof(*input_files_ts_scale[nb_input_files]), &nb_input_files_ts_scale[nb_input_files], stream + 1);
3020     input_files_ts_scale[nb_input_files][stream]= scale;
3021 }
3022
3023 static int opt_recording_time(const char *opt, const char *arg)
3024 {
3025     recording_time = parse_time_or_die(opt, arg, 1);
3026     return 0;
3027 }
3028
3029 static int opt_start_time(const char *opt, const char *arg)
3030 {
3031     start_time = parse_time_or_die(opt, arg, 1);
3032     return 0;
3033 }
3034
3035 static int opt_recording_timestamp(const char *opt, const char *arg)
3036 {
3037     recording_timestamp = parse_time_or_die(opt, arg, 0) / 1000000;
3038     return 0;
3039 }
3040
3041 static int opt_input_ts_offset(const char *opt, const char *arg)
3042 {
3043     input_ts_offset = parse_time_or_die(opt, arg, 1);
3044     return 0;
3045 }
3046
3047 static enum CodecID find_codec_or_die(const char *name, int type, int encoder, int strict)
3048 {
3049     const char *codec_string = encoder ? "encoder" : "decoder";
3050     AVCodec *codec;
3051
3052     if(!name)
3053         return CODEC_ID_NONE;
3054     codec = encoder ?
3055         avcodec_find_encoder_by_name(name) :
3056         avcodec_find_decoder_by_name(name);
3057     if(!codec) {
3058         fprintf(stderr, "Unknown %s '%s'\n", codec_string, name);
3059         ffmpeg_exit(1);
3060     }
3061     if(codec->type != type) {
3062         fprintf(stderr, "Invalid %s type '%s'\n", codec_string, name);
3063         ffmpeg_exit(1);
3064     }
3065     if(codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
3066        strict > FF_COMPLIANCE_EXPERIMENTAL) {
3067         fprintf(stderr, "%s '%s' is experimental and might produce bad "
3068                 "results.\nAdd '-strict experimental' if you want to use it.\n",
3069                 codec_string, codec->name);
3070         codec = encoder ?
3071             avcodec_find_encoder(codec->id) :
3072             avcodec_find_decoder(codec->id);
3073         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
3074             fprintf(stderr, "Or use the non experimental %s '%s'.\n",
3075                     codec_string, codec->name);
3076         ffmpeg_exit(1);
3077     }
3078     return codec->id;
3079 }
3080
3081 static void opt_input_file(const char *filename)
3082 {
3083     AVFormatContext *ic;
3084     AVFormatParameters params, *ap = &params;
3085     AVInputFormat *file_iformat = NULL;
3086     int err, i, ret, rfps, rfps_base;
3087     int64_t timestamp;
3088
3089     if (last_asked_format) {
3090         if (!(file_iformat = av_find_input_format(last_asked_format))) {
3091             fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
3092             ffmpeg_exit(1);
3093         }
3094         last_asked_format = NULL;
3095     }
3096
3097     if (!strcmp(filename, "-"))
3098         filename = "pipe:";
3099
3100     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3101                     !strcmp(filename, "/dev/stdin");
3102
3103     /* get default parameters from command line */
3104     ic = avformat_alloc_context();
3105     if (!ic) {
3106         print_error(filename, AVERROR(ENOMEM));
3107         ffmpeg_exit(1);
3108     }
3109
3110     memset(ap, 0, sizeof(*ap));
3111     ap->prealloced_context = 1;
3112     ap->sample_rate = audio_sample_rate;
3113     ap->channels = audio_channels;
3114     ap->time_base.den = frame_rate.num;
3115     ap->time_base.num = frame_rate.den;
3116     ap->width = frame_width;
3117     ap->height = frame_height;
3118     ap->pix_fmt = frame_pix_fmt;
3119    // ap->sample_fmt = audio_sample_fmt; //FIXME:not implemented in libavformat
3120     ap->channel = video_channel;
3121     ap->standard = video_standard;
3122
3123     set_context_opts(ic, avformat_opts, AV_OPT_FLAG_DECODING_PARAM, NULL);
3124
3125     ic->video_codec_id   =
3126         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0,
3127                           avcodec_opts[AVMEDIA_TYPE_VIDEO   ]->strict_std_compliance);
3128     ic->audio_codec_id   =
3129         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0,
3130                           avcodec_opts[AVMEDIA_TYPE_AUDIO   ]->strict_std_compliance);
3131     ic->subtitle_codec_id=
3132         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0,
3133                           avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->strict_std_compliance);
3134     ic->flags |= AVFMT_FLAG_NONBLOCK;
3135
3136     /* open the input file with generic libav function */
3137     err = av_open_input_file(&ic, filename, file_iformat, 0, ap);
3138     if (err < 0) {
3139         print_error(filename, err);
3140         ffmpeg_exit(1);
3141     }
3142     if(opt_programid) {
3143         int i, j;
3144         int found=0;
3145         for(i=0; i<ic->nb_streams; i++){
3146             ic->streams[i]->discard= AVDISCARD_ALL;
3147         }
3148         for(i=0; i<ic->nb_programs; i++){
3149             AVProgram *p= ic->programs[i];
3150             if(p->id != opt_programid){
3151                 p->discard = AVDISCARD_ALL;
3152             }else{
3153                 found=1;
3154                 for(j=0; j<p->nb_stream_indexes; j++){
3155                     ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
3156                 }
3157             }
3158         }
3159         if(!found){
3160             fprintf(stderr, "Specified program id not found\n");
3161             ffmpeg_exit(1);
3162         }
3163         opt_programid=0;
3164     }
3165
3166     ic->loop_input = loop_input;
3167
3168     /* If not enough info to get the stream parameters, we decode the
3169        first frames to get it. (used in mpeg case for example) */
3170     ret = av_find_stream_info(ic);
3171     if (ret < 0 && verbose >= 0) {
3172         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3173         av_close_input_file(ic);
3174         ffmpeg_exit(1);
3175     }
3176
3177     timestamp = start_time;
3178     /* add the stream start time */
3179     if (ic->start_time != AV_NOPTS_VALUE)
3180         timestamp += ic->start_time;
3181
3182     /* if seeking requested, we execute it */
3183     if (start_time != 0) {
3184         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3185         if (ret < 0) {
3186             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3187                     filename, (double)timestamp / AV_TIME_BASE);
3188         }
3189         /* reset seek info */
3190         start_time = 0;
3191     }
3192
3193     /* update the current parameters so that they match the one of the input stream */
3194     for(i=0;i<ic->nb_streams;i++) {
3195         AVStream *st = ic->streams[i];
3196         AVCodecContext *dec = st->codec;
3197         dec->thread_count = thread_count;
3198         input_codecs = grow_array(input_codecs, sizeof(*input_codecs), &nb_input_codecs, nb_input_codecs + 1);
3199         switch (dec->codec_type) {
3200         case AVMEDIA_TYPE_AUDIO:
3201             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(audio_codec_name);
3202             set_context_opts(dec, avcodec_opts[AVMEDIA_TYPE_AUDIO], AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM, input_codecs[nb_input_codecs-1]);
3203             //fprintf(stderr, "\nInput Audio channels: %d", dec->channels);
3204             channel_layout    = dec->channel_layout;
3205             audio_channels    = dec->channels;
3206             audio_sample_rate = dec->sample_rate;
3207             audio_sample_fmt  = dec->sample_fmt;
3208             if(audio_disable)
3209                 st->discard= AVDISCARD_ALL;
3210             /* Note that av_find_stream_info can add more streams, and we
3211              * currently have no chance of setting up lowres decoding
3212              * early enough for them. */
3213             if (dec->lowres)
3214                 audio_sample_rate >>= dec->lowres;
3215             break;
3216         case AVMEDIA_TYPE_VIDEO:
3217             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(video_codec_name);
3218             set_context_opts(dec, avcodec_opts[AVMEDIA_TYPE_VIDEO], AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM, input_codecs[nb_input_codecs-1]);
3219             frame_height = dec->height;
3220             frame_width  = dec->width;
3221             if(ic->streams[i]->sample_aspect_ratio.num)
3222                 frame_aspect_ratio=av_q2d(ic->streams[i]->sample_aspect_ratio);
3223             else
3224                 frame_aspect_ratio=av_q2d(dec->sample_aspect_ratio);
3225             frame_aspect_ratio *= (float) dec->width / dec->height;
3226             frame_pix_fmt = dec->pix_fmt;
3227             rfps      = ic->streams[i]->r_frame_rate.num;
3228             rfps_base = ic->streams[i]->r_frame_rate.den;
3229             if (dec->lowres) {
3230                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3231                 frame_height >>= dec->lowres;
3232                 frame_width  >>= dec->lowres;
3233                 dec->height = frame_height;
3234                 dec->width  = frame_width;
3235             }
3236             if(me_threshold)
3237                 dec->debug |= FF_DEBUG_MV;
3238
3239             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3240
3241                 if (verbose >= 0)
3242                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3243                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3244
3245                     (float)rfps / rfps_base, rfps, rfps_base);
3246             }
3247             /* update the current frame rate to match the stream frame rate */
3248             frame_rate.num = rfps;
3249             frame_rate.den = rfps_base;
3250
3251             if(video_disable)
3252                 st->discard= AVDISCARD_ALL;
3253             else if(video_discard)
3254                 st->discard= video_discard;
3255             break;
3256         case AVMEDIA_TYPE_DATA:
3257             break;
3258         case AVMEDIA_TYPE_SUBTITLE:
3259             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(subtitle_codec_name);
3260             if(subtitle_disable)
3261                 st->discard = AVDISCARD_ALL;
3262             break;
3263         case AVMEDIA_TYPE_ATTACHMENT:
3264         case AVMEDIA_TYPE_UNKNOWN:
3265             break;
3266         default:
3267             abort();
3268         }
3269     }
3270
3271     input_files[nb_input_files] = ic;
3272     input_files_ts_offset[nb_input_files] = input_ts_offset - (copy_ts ? 0 : timestamp);
3273     /* dump the file content */
3274     if (verbose >= 0)
3275         av_dump_format(ic, nb_input_files, filename, 0);
3276
3277     nb_input_files++;
3278
3279     video_channel = 0;
3280
3281     av_freep(&video_codec_name);
3282     av_freep(&audio_codec_name);
3283     av_freep(&subtitle_codec_name);
3284 }
3285
3286 static void check_audio_video_sub_inputs(int *has_video_ptr, int *has_audio_ptr,
3287                                          int *has_subtitle_ptr)
3288 {
3289     int has_video, has_audio, has_subtitle, i, j;
3290     AVFormatContext *ic;
3291
3292     has_video = 0;
3293     has_audio = 0;
3294     has_subtitle = 0;
3295     for(j=0;j<nb_input_files;j++) {
3296         ic = input_files[j];
3297         for(i=0;i<ic->nb_streams;i++) {
3298             AVCodecContext *enc = ic->streams[i]->codec;
3299             switch(enc->codec_type) {
3300             case AVMEDIA_TYPE_AUDIO:
3301                 has_audio = 1;
3302                 break;
3303             case AVMEDIA_TYPE_VIDEO:
3304                 has_video = 1;
3305                 break;
3306             case AVMEDIA_TYPE_SUBTITLE:
3307                 has_subtitle = 1;
3308                 break;
3309             case AVMEDIA_TYPE_DATA:
3310             case AVMEDIA_TYPE_ATTACHMENT:
3311             case AVMEDIA_TYPE_UNKNOWN:
3312                 break;
3313             default:
3314                 abort();
3315             }
3316         }
3317     }
3318     *has_video_ptr = has_video;
3319     *has_audio_ptr = has_audio;
3320     *has_subtitle_ptr = has_subtitle;
3321 }
3322
3323 static void new_video_stream(AVFormatContext *oc, int file_idx)
3324 {
3325     AVStream *st;
3326     AVOutputStream *ost;
3327     AVCodecContext *video_enc;
3328     enum CodecID codec_id = CODEC_ID_NONE;
3329     AVCodec *codec= NULL;
3330
3331     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3332     if (!st) {
3333         fprintf(stderr, "Could not alloc stream\n");
3334         ffmpeg_exit(1);
3335     }
3336     ost = new_output_stream(oc, file_idx);
3337
3338     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3339     if(!video_stream_copy){
3340         if (video_codec_name) {
3341             codec_id = find_codec_or_die(video_codec_name, AVMEDIA_TYPE_VIDEO, 1,
3342                                          avcodec_opts[AVMEDIA_TYPE_VIDEO]->strict_std_compliance);
3343             codec = avcodec_find_encoder_by_name(video_codec_name);
3344             output_codecs[nb_output_codecs-1] = codec;
3345         } else {
3346             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_VIDEO);
3347             codec = avcodec_find_encoder(codec_id);
3348         }
3349     }
3350
3351     avcodec_get_context_defaults3(st->codec, codec);
3352     ost->bitstream_filters = video_bitstream_filters;
3353     video_bitstream_filters= NULL;
3354
3355     st->codec->thread_count= thread_count;
3356
3357     video_enc = st->codec;
3358
3359     if(video_codec_tag)
3360         video_enc->codec_tag= video_codec_tag;
3361
3362     if(   (video_global_header&1)
3363        || (video_global_header==0 && (oc->oformat->flags & AVFMT_GLOBALHEADER))){
3364         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3365         avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3366     }
3367     if(video_global_header&2){
3368         video_enc->flags2 |= CODEC_FLAG2_LOCAL_HEADER;
3369         avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags2|= CODEC_FLAG2_LOCAL_HEADER;
3370     }
3371
3372     if (video_stream_copy) {
3373         st->stream_copy = 1;
3374         video_enc->codec_type = AVMEDIA_TYPE_VIDEO;
3375         video_enc->sample_aspect_ratio =
3376         st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3377     } else {
3378         const char *p;
3379         int i;
3380         AVRational fps= frame_rate.num ? frame_rate : (AVRational){25,1};
3381
3382         video_enc->codec_id = codec_id;
3383         set_context_opts(video_enc, avcodec_opts[AVMEDIA_TYPE_VIDEO], AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3384
3385         if (codec && codec->supported_framerates && !force_fps)
3386             fps = codec->supported_framerates[av_find_nearest_q_idx(fps, codec->supported_framerates)];
3387         video_enc->time_base.den = fps.num;
3388         video_enc->time_base.num = fps.den;
3389
3390         video_enc->width = frame_width;
3391         video_enc->height = frame_height;
3392         video_enc->sample_aspect_ratio = av_d2q(frame_aspect_ratio*video_enc->height/video_enc->width, 255);
3393         video_enc->pix_fmt = frame_pix_fmt;
3394         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3395
3396         choose_pixel_fmt(st, codec);
3397
3398         if (intra_only)
3399             video_enc->gop_size = 0;
3400         if (video_qscale || same_quality) {
3401             video_enc->flags |= CODEC_FLAG_QSCALE;
3402             video_enc->global_quality=
3403                 st->quality = FF_QP2LAMBDA * video_qscale;
3404         }
3405
3406         if(intra_matrix)
3407             video_enc->intra_matrix = intra_matrix;
3408         if(inter_matrix)
3409             video_enc->inter_matrix = inter_matrix;
3410
3411         p= video_rc_override_string;
3412         for(i=0; p; i++){
3413             int start, end, q;
3414             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3415             if(e!=3){
3416                 fprintf(stderr, "error parsing rc_override\n");
3417                 ffmpeg_exit(1);
3418             }
3419             video_enc->rc_override=
3420                 av_realloc(video_enc->rc_override,
3421                            sizeof(RcOverride)*(i+1));
3422             video_enc->rc_override[i].start_frame= start;
3423             video_enc->rc_override[i].end_frame  = end;
3424             if(q>0){
3425                 video_enc->rc_override[i].qscale= q;
3426                 video_enc->rc_override[i].quality_factor= 1.0;
3427             }
3428             else{
3429                 video_enc->rc_override[i].qscale= 0;
3430                 video_enc->rc_override[i].quality_factor= -q/100.0;
3431             }
3432             p= strchr(p, '/');
3433             if(p) p++;
3434         }
3435         video_enc->rc_override_count=i;
3436         if (!video_enc->rc_initial_buffer_occupancy)
3437             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3438         video_enc->me_threshold= me_threshold;
3439         video_enc->intra_dc_precision= intra_dc_precision - 8;
3440
3441         if (do_psnr)
3442             video_enc->flags|= CODEC_FLAG_PSNR;
3443
3444         /* two pass mode */
3445         if (do_pass) {
3446             if (do_pass == 1) {
3447                 video_enc->flags |= CODEC_FLAG_PASS1;
3448             } else {
3449                 video_enc->flags |= CODEC_FLAG_PASS2;
3450             }
3451         }
3452
3453         if (forced_key_frames)
3454             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3455     }
3456     if (video_language) {
3457         av_metadata_set2(&st->metadata, "language", video_language, 0);
3458         av_freep(&video_language);
3459     }
3460
3461     /* reset some key parameters */
3462     video_disable = 0;
3463     av_freep(&video_codec_name);
3464     av_freep(&forced_key_frames);
3465     video_stream_copy = 0;
3466     frame_pix_fmt = PIX_FMT_NONE;
3467 }
3468
3469 static void new_audio_stream(AVFormatContext *oc, int file_idx)
3470 {
3471     AVStream *st;
3472     AVOutputStream *ost;
3473     AVCodec *codec= NULL;
3474     AVCodecContext *audio_enc;
3475     enum CodecID codec_id = CODEC_ID_NONE;
3476
3477     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3478     if (!st) {
3479         fprintf(stderr, "Could not alloc stream\n");
3480         ffmpeg_exit(1);
3481     }
3482     ost = new_output_stream(oc, file_idx);
3483
3484     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3485     if(!audio_stream_copy){
3486         if (audio_codec_name) {
3487             codec_id = find_codec_or_die(audio_codec_name, AVMEDIA_TYPE_AUDIO, 1,
3488                                          avcodec_opts[AVMEDIA_TYPE_AUDIO]->strict_std_compliance);
3489             codec = avcodec_find_encoder_by_name(audio_codec_name);
3490             output_codecs[nb_output_codecs-1] = codec;
3491         } else {
3492             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_AUDIO);
3493             codec = avcodec_find_encoder(codec_id);
3494         }
3495     }
3496
3497     avcodec_get_context_defaults3(st->codec, codec);
3498
3499     ost->bitstream_filters = audio_bitstream_filters;
3500     audio_bitstream_filters= NULL;
3501
3502     st->codec->thread_count= thread_count;
3503
3504     audio_enc = st->codec;
3505     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3506
3507     if(audio_codec_tag)
3508         audio_enc->codec_tag= audio_codec_tag;
3509
3510     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3511         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3512         avcodec_opts[AVMEDIA_TYPE_AUDIO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3513     }
3514     if (audio_stream_copy) {
3515         st->stream_copy = 1;
3516         audio_enc->channels = audio_channels;
3517         audio_enc->sample_rate = audio_sample_rate;
3518     } else {
3519         audio_enc->codec_id = codec_id;
3520         set_context_opts(audio_enc, avcodec_opts[AVMEDIA_TYPE_AUDIO], AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3521
3522         if (audio_qscale > QSCALE_NONE) {
3523             audio_enc->flags |= CODEC_FLAG_QSCALE;
3524             audio_enc->global_quality = st->quality = FF_QP2LAMBDA * audio_qscale;
3525         }
3526         audio_enc->channels = audio_channels;
3527         audio_enc->sample_fmt = audio_sample_fmt;
3528         audio_enc->sample_rate = audio_sample_rate;
3529         audio_enc->channel_layout = channel_layout;
3530         if (av_get_channel_layout_nb_channels(channel_layout) != audio_channels)
3531             audio_enc->channel_layout = 0;
3532         choose_sample_fmt(st, codec);
3533         choose_sample_rate(st, codec);
3534     }
3535     audio_enc->time_base= (AVRational){1, audio_sample_rate};
3536     if (audio_language) {
3537         av_metadata_set2(&st->metadata, "language", audio_language, 0);
3538         av_freep(&audio_language);
3539     }
3540
3541     /* reset some key parameters */
3542     audio_disable = 0;
3543     av_freep(&audio_codec_name);
3544     audio_stream_copy = 0;
3545 }
3546
3547 static void new_subtitle_stream(AVFormatContext *oc, int file_idx)
3548 {
3549     AVStream *st;
3550     AVOutputStream *ost;
3551     AVCodec *codec=NULL;
3552     AVCodecContext *subtitle_enc;
3553     enum CodecID codec_id = CODEC_ID_NONE;
3554
3555     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3556     if (!st) {
3557         fprintf(stderr, "Could not alloc stream\n");
3558         ffmpeg_exit(1);
3559     }
3560     ost = new_output_stream(oc, file_idx);
3561     subtitle_enc = st->codec;
3562     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3563     if(!subtitle_stream_copy){
3564         if (subtitle_codec_name) {
3565             codec_id = find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 1,
3566                                          avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->strict_std_compliance);
3567             codec= output_codecs[nb_output_codecs-1] = avcodec_find_encoder_by_name(subtitle_codec_name);
3568         } else {
3569             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_SUBTITLE);
3570             codec = avcodec_find_encoder(codec_id);
3571         }
3572     }
3573     avcodec_get_context_defaults3(st->codec, codec);
3574
3575     ost->bitstream_filters = subtitle_bitstream_filters;
3576     subtitle_bitstream_filters= NULL;
3577
3578     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3579
3580     if(subtitle_codec_tag)
3581         subtitle_enc->codec_tag= subtitle_codec_tag;
3582
3583     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3584         subtitle_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3585         avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->flags |= CODEC_FLAG_GLOBAL_HEADER;
3586     }
3587     if (subtitle_stream_copy) {
3588         st->stream_copy = 1;
3589     } else {
3590         subtitle_enc->codec_id = codec_id;
3591         set_context_opts(avcodec_opts[AVMEDIA_TYPE_SUBTITLE], subtitle_enc, AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3592     }
3593
3594     if (subtitle_language) {
3595         av_metadata_set2(&st->metadata, "language", subtitle_language, 0);
3596         av_freep(&subtitle_language);
3597     }
3598
3599     subtitle_disable = 0;
3600     av_freep(&subtitle_codec_name);
3601     subtitle_stream_copy = 0;
3602 }
3603
3604 static int opt_new_stream(const char *opt, const char *arg)
3605 {
3606     AVFormatContext *oc;
3607     int file_idx = nb_output_files - 1;
3608     if (nb_output_files <= 0) {
3609         fprintf(stderr, "At least one output file must be specified\n");
3610         ffmpeg_exit(1);
3611     }
3612     oc = output_files[file_idx];
3613
3614     if      (!strcmp(opt, "newvideo"   )) new_video_stream   (oc, file_idx);
3615     else if (!strcmp(opt, "newaudio"   )) new_audio_stream   (oc, file_idx);
3616     else if (!strcmp(opt, "newsubtitle")) new_subtitle_stream(oc, file_idx);
3617     else av_assert0(0);
3618     return 0;
3619 }
3620
3621 /* arg format is "output-stream-index:streamid-value". */
3622 static int opt_streamid(const char *opt, const char *arg)
3623 {
3624     int idx;
3625     char *p;
3626     char idx_str[16];
3627
3628     strncpy(idx_str, arg, sizeof(idx_str));
3629     idx_str[sizeof(idx_str)-1] = '\0';
3630     p = strchr(idx_str, ':');
3631     if (!p) {
3632         fprintf(stderr,
3633                 "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3634                 arg, opt);
3635         ffmpeg_exit(1);
3636     }
3637     *p++ = '\0';
3638     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, MAX_STREAMS-1);
3639     streamid_map = grow_array(streamid_map, sizeof(*streamid_map), &nb_streamid_map, idx+1);
3640     streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3641     return 0;
3642 }
3643
3644 static void opt_output_file(const char *filename)
3645 {
3646     AVFormatContext *oc;
3647     int err, use_video, use_audio, use_subtitle;
3648     int input_has_video, input_has_audio, input_has_subtitle;
3649     AVFormatParameters params, *ap = &params;
3650     AVOutputFormat *file_oformat;
3651
3652     if (!strcmp(filename, "-"))
3653         filename = "pipe:";
3654
3655     oc = avformat_alloc_context();
3656     if (!oc) {
3657         print_error(filename, AVERROR(ENOMEM));
3658         ffmpeg_exit(1);
3659     }
3660
3661     if (last_asked_format) {
3662         file_oformat = av_guess_format(last_asked_format, NULL, NULL);
3663         if (!file_oformat) {
3664             fprintf(stderr, "Requested output format '%s' is not a suitable output format\n", last_asked_format);
3665             ffmpeg_exit(1);
3666         }
3667