lavf: if id3v2 tag is present and all else fails, guess by file extension
[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 static const char *last_asked_format = NULL;
114 static AVFormatContext *input_files[MAX_FILES];
115 static int64_t input_files_ts_offset[MAX_FILES];
116 static double *input_files_ts_scale[MAX_FILES] = {NULL};
117 static AVCodec **input_codecs = NULL;
118 static int nb_input_files = 0;
119 static int nb_input_codecs = 0;
120 static int nb_input_files_ts_scale[MAX_FILES] = {0};
121
122 static AVFormatContext *output_files[MAX_FILES];
123 static AVCodec **output_codecs = NULL;
124 static int nb_output_files = 0;
125 static int nb_output_codecs = 0;
126
127 static AVStreamMap *stream_maps = NULL;
128 static int nb_stream_maps;
129
130 /* first item specifies output metadata, second is input */
131 static AVMetaDataMap (*meta_data_maps)[2] = NULL;
132 static int nb_meta_data_maps;
133 static int metadata_global_autocopy   = 1;
134 static int metadata_streams_autocopy  = 1;
135 static int metadata_chapters_autocopy = 1;
136
137 static AVChapterMap *chapter_maps = NULL;
138 static int nb_chapter_maps;
139
140 /* indexed by output file stream index */
141 static int *streamid_map = NULL;
142 static int nb_streamid_map = 0;
143
144 static int frame_width  = 0;
145 static int frame_height = 0;
146 static float frame_aspect_ratio = 0;
147 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
148 static enum AVSampleFormat audio_sample_fmt = AV_SAMPLE_FMT_NONE;
149 static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
150 static AVRational frame_rate;
151 static float video_qscale = 0;
152 static uint16_t *intra_matrix = NULL;
153 static uint16_t *inter_matrix = NULL;
154 static const char *video_rc_override_string=NULL;
155 static int video_disable = 0;
156 static int video_discard = 0;
157 static char *video_codec_name = NULL;
158 static unsigned int video_codec_tag = 0;
159 static char *video_language = NULL;
160 static int same_quality = 0;
161 static int do_deinterlace = 0;
162 static int top_field_first = -1;
163 static int me_threshold = 0;
164 static int intra_dc_precision = 8;
165 static int loop_input = 0;
166 static int loop_output = AVFMT_NOOUTPUTLOOP;
167 static int qp_hist = 0;
168 #if CONFIG_AVFILTER
169 static char *vfilters = NULL;
170 static AVFilterGraph *graph = NULL;
171 #endif
172
173 static int intra_only = 0;
174 static int audio_sample_rate = 44100;
175 static int64_t channel_layout = 0;
176 #define QSCALE_NONE -99999
177 static float audio_qscale = QSCALE_NONE;
178 static int audio_disable = 0;
179 static int audio_channels = 1;
180 static char  *audio_codec_name = NULL;
181 static unsigned int audio_codec_tag = 0;
182 static char *audio_language = NULL;
183
184 static int subtitle_disable = 0;
185 static char *subtitle_codec_name = NULL;
186 static char *subtitle_language = NULL;
187 static unsigned int subtitle_codec_tag = 0;
188
189 static float mux_preload= 0.5;
190 static float mux_max_delay= 0.7;
191
192 static int64_t recording_time = INT64_MAX;
193 static int64_t start_time = 0;
194 static int64_t recording_timestamp = 0;
195 static int64_t input_ts_offset = 0;
196 static int file_overwrite = 0;
197 static AVMetadata *metadata;
198 static int do_benchmark = 0;
199 static int do_hex_dump = 0;
200 static int do_pkt_dump = 0;
201 static int do_psnr = 0;
202 static int do_pass = 0;
203 static char *pass_logfilename_prefix = NULL;
204 static int audio_stream_copy = 0;
205 static int video_stream_copy = 0;
206 static int subtitle_stream_copy = 0;
207 static int video_sync_method= -1;
208 static int audio_sync_method= 0;
209 static float audio_drift_threshold= 0.1;
210 static int copy_ts= 0;
211 static int copy_tb;
212 static int opt_shortest = 0;
213 static int video_global_header = 0;
214 static char *vstats_filename;
215 static FILE *vstats_file;
216 static int opt_programid = 0;
217 static int copy_initial_nonkeyframes = 0;
218
219 static int rate_emu = 0;
220
221 static int  video_channel = 0;
222 static char *video_standard;
223
224 static int audio_volume = 256;
225
226 static int exit_on_error = 0;
227 static int using_stdin = 0;
228 static int verbose = 1;
229 static int thread_count= 1;
230 static int q_pressed = 0;
231 static int64_t video_size = 0;
232 static int64_t audio_size = 0;
233 static int64_t extra_size = 0;
234 static int nb_frames_dup = 0;
235 static int nb_frames_drop = 0;
236 static int input_sync;
237 static uint64_t limit_filesize = 0;
238 static int force_fps = 0;
239 static char *forced_key_frames = NULL;
240
241 static float dts_delta_threshold = 10;
242
243 static unsigned int sws_flags = SWS_BICUBIC;
244
245 static int64_t timer_start;
246
247 static uint8_t *audio_buf;
248 static uint8_t *audio_out;
249 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
250
251 static short *samples;
252
253 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
254 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
255 static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL;
256
257 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
258
259 struct AVInputStream;
260
261 typedef struct AVOutputStream {
262     int file_index;          /* file index */
263     int index;               /* stream index in the output file */
264     int source_index;        /* AVInputStream index */
265     AVStream *st;            /* stream in the output file */
266     int encoding_needed;     /* true if encoding needed for this stream */
267     int frame_number;
268     /* input pts and corresponding output pts
269        for A/V sync */
270     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
271     struct AVInputStream *sync_ist; /* input stream to sync against */
272     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
273     AVBitStreamFilterContext *bitstream_filters;
274     /* video only */
275     int video_resample;
276     AVFrame pict_tmp;      /* temporary image for resampling */
277     struct SwsContext *img_resample_ctx; /* for image resampling */
278     int resample_height;
279     int resample_width;
280     int resample_pix_fmt;
281
282     /* full frame size of first frame */
283     int original_height;
284     int original_width;
285
286     /* forced key frames */
287     int64_t *forced_kf_pts;
288     int forced_kf_count;
289     int forced_kf_index;
290
291     /* audio only */
292     int audio_resample;
293     ReSampleContext *resample; /* for audio resampling */
294     int resample_sample_fmt;
295     int resample_channels;
296     int resample_sample_rate;
297     int reformat_pair;
298     AVAudioConvert *reformat_ctx;
299     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
300     FILE *logfile;
301 } AVOutputStream;
302
303 static AVOutputStream **output_streams_for_file[MAX_FILES] = { NULL };
304 static int nb_output_streams_for_file[MAX_FILES] = { 0 };
305
306 typedef struct AVInputStream {
307     int file_index;
308     int index;
309     AVStream *st;
310     int discard;             /* true if stream data should be discarded */
311     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
312     int64_t sample_index;      /* current sample */
313
314     int64_t       start;     /* time when read started */
315     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
316                                 is not defined */
317     int64_t       pts;       /* current pts */
318     PtsCorrectionContext pts_ctx;
319     int is_start;            /* is 1 at the start and after a discontinuity */
320     int showed_multi_packet_warning;
321     int is_past_recording_time;
322 #if CONFIG_AVFILTER
323     AVFilterContext *output_video_filter;
324     AVFilterContext *input_video_filter;
325     AVFrame *filter_frame;
326     int has_filter_frame;
327     AVFilterBufferRef *picref;
328 #endif
329 } AVInputStream;
330
331 typedef struct AVInputFile {
332     int eof_reached;      /* true if eof reached */
333     int ist_index;        /* index of first stream in ist_table */
334     int buffer_size;      /* current total buffer size */
335     int nb_streams;       /* nb streams we are aware of */
336 } AVInputFile;
337
338 #if CONFIG_AVFILTER
339
340 static int configure_filters(AVInputStream *ist, AVOutputStream *ost)
341 {
342     AVFilterContext *last_filter, *filter;
343     /** filter graph containing all filters including input & output */
344     AVCodecContext *codec = ost->st->codec;
345     AVCodecContext *icodec = ist->st->codec;
346     FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
347     char args[255];
348     int ret;
349
350     graph = avfilter_graph_alloc();
351
352     snprintf(args, 255, "%d:%d:%d:%d:%d", ist->st->codec->width,
353              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE);
354     ret = avfilter_graph_create_filter(&ist->input_video_filter, avfilter_get_by_name("buffer"),
355                                        "src", args, NULL, graph);
356     if (ret < 0)
357         return ret;
358     ret = avfilter_graph_create_filter(&ist->output_video_filter, &ffsink,
359                                        "out", NULL, &ffsink_ctx, graph);
360     if (ret < 0)
361         return ret;
362     last_filter = ist->input_video_filter;
363
364     if (codec->width  != icodec->width || codec->height != icodec->height) {
365         snprintf(args, 255, "%d:%d:flags=0x%X",
366                  codec->width,
367                  codec->height,
368                  (int)av_get_int(sws_opts, "sws_flags", NULL));
369         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
370                                                 NULL, args, NULL, graph)) < 0)
371             return ret;
372         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
373             return ret;
374         last_filter = filter;
375     }
376
377     snprintf(args, sizeof(args), "flags=0x%X", (int)av_get_int(sws_opts, "sws_flags", NULL));
378     graph->scale_sws_opts = av_strdup(args);
379
380     if (vfilters) {
381         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
382         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
383
384         outputs->name    = av_strdup("in");
385         outputs->filter_ctx = last_filter;
386         outputs->pad_idx = 0;
387         outputs->next    = NULL;
388
389         inputs->name    = av_strdup("out");
390         inputs->filter_ctx = ist->output_video_filter;
391         inputs->pad_idx = 0;
392         inputs->next    = NULL;
393
394         if ((ret = avfilter_graph_parse(graph, vfilters, inputs, outputs, NULL)) < 0)
395             return ret;
396         av_freep(&vfilters);
397     } else {
398         if ((ret = avfilter_link(last_filter, 0, ist->output_video_filter, 0)) < 0)
399             return ret;
400     }
401
402     if ((ret = avfilter_graph_config(graph, NULL)) < 0)
403         return ret;
404
405     codec->width  = ist->output_video_filter->inputs[0]->w;
406     codec->height = ist->output_video_filter->inputs[0]->h;
407
408     return 0;
409 }
410 #endif /* CONFIG_AVFILTER */
411
412 static void term_exit(void)
413 {
414     av_log(NULL, AV_LOG_QUIET, "");
415 }
416
417 static volatile int received_sigterm = 0;
418
419 static void
420 sigterm_handler(int sig)
421 {
422     received_sigterm = sig;
423     term_exit();
424 }
425
426 static void term_init(void)
427 {
428     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
429     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
430 #ifdef SIGXCPU
431     signal(SIGXCPU, sigterm_handler);
432 #endif
433 }
434
435 /* read a key without blocking */
436 static int read_key(void)
437 {
438 #if HAVE_KBHIT
439     if(kbhit())
440         return(getch());
441 #endif
442     return -1;
443 }
444
445 static int decode_interrupt_cb(void)
446 {
447     return q_pressed || (q_pressed = read_key() == 'q');
448 }
449
450 static int ffmpeg_exit(int ret)
451 {
452     int i;
453
454     /* close files */
455     for(i=0;i<nb_output_files;i++) {
456         AVFormatContext *s = output_files[i];
457         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
458             avio_close(s->pb);
459         avformat_free_context(s);
460         av_free(output_streams_for_file[i]);
461     }
462     for(i=0;i<nb_input_files;i++) {
463         av_close_input_file(input_files[i]);
464         av_free(input_files_ts_scale[i]);
465     }
466
467     av_free(intra_matrix);
468     av_free(inter_matrix);
469
470     if (vstats_file)
471         fclose(vstats_file);
472     av_free(vstats_filename);
473
474     av_free(streamid_map);
475     av_free(input_codecs);
476     av_free(output_codecs);
477     av_free(stream_maps);
478     av_free(meta_data_maps);
479
480     av_free(video_codec_name);
481     av_free(audio_codec_name);
482     av_free(subtitle_codec_name);
483
484     av_free(video_standard);
485
486     uninit_opts();
487     av_free(audio_buf);
488     av_free(audio_out);
489     allocated_audio_buf_size= allocated_audio_out_size= 0;
490     av_free(samples);
491
492 #if CONFIG_AVFILTER
493     avfilter_uninit();
494 #endif
495
496     if (received_sigterm) {
497         fprintf(stderr,
498             "Received signal %d: terminating.\n",
499             (int) received_sigterm);
500         exit (255);
501     }
502
503     exit(ret); /* not all OS-es handle main() return value */
504     return ret;
505 }
506
507 /* similar to ff_dynarray_add() and av_fast_realloc() */
508 static void *grow_array(void *array, int elem_size, int *size, int new_size)
509 {
510     if (new_size >= INT_MAX / elem_size) {
511         fprintf(stderr, "Array too big.\n");
512         ffmpeg_exit(1);
513     }
514     if (*size < new_size) {
515         uint8_t *tmp = av_realloc(array, new_size*elem_size);
516         if (!tmp) {
517             fprintf(stderr, "Could not alloc buffer.\n");
518             ffmpeg_exit(1);
519         }
520         memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
521         *size = new_size;
522         return tmp;
523     }
524     return array;
525 }
526
527 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
528 {
529     if(codec && codec->sample_fmts){
530         const enum AVSampleFormat *p= codec->sample_fmts;
531         for(; *p!=-1; p++){
532             if(*p == st->codec->sample_fmt)
533                 break;
534         }
535         if (*p == -1) {
536             av_log(NULL, AV_LOG_WARNING,
537                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
538                    av_get_sample_fmt_name(st->codec->sample_fmt),
539                    codec->name,
540                    av_get_sample_fmt_name(codec->sample_fmts[0]));
541             st->codec->sample_fmt = codec->sample_fmts[0];
542         }
543     }
544 }
545
546 static void choose_sample_rate(AVStream *st, AVCodec *codec)
547 {
548     if(codec && codec->supported_samplerates){
549         const int *p= codec->supported_samplerates;
550         int best=0;
551         int best_dist=INT_MAX;
552         for(; *p; p++){
553             int dist= abs(st->codec->sample_rate - *p);
554             if(dist < best_dist){
555                 best_dist= dist;
556                 best= *p;
557             }
558         }
559         if(best_dist){
560             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
561         }
562         st->codec->sample_rate= best;
563     }
564 }
565
566 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
567 {
568     if(codec && codec->pix_fmts){
569         const enum PixelFormat *p= codec->pix_fmts;
570         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
571             if(st->codec->codec_id==CODEC_ID_MJPEG){
572                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
573             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
574                 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};
575             }
576         }
577         for(; *p!=-1; p++){
578             if(*p == st->codec->pix_fmt)
579                 break;
580         }
581         if(*p == -1)
582             st->codec->pix_fmt = codec->pix_fmts[0];
583     }
584 }
585
586 static AVOutputStream *new_output_stream(AVFormatContext *oc, int file_idx)
587 {
588     int idx = oc->nb_streams - 1;
589     AVOutputStream *ost;
590
591     output_streams_for_file[file_idx] =
592         grow_array(output_streams_for_file[file_idx],
593                    sizeof(*output_streams_for_file[file_idx]),
594                    &nb_output_streams_for_file[file_idx],
595                    oc->nb_streams);
596     ost = output_streams_for_file[file_idx][idx] =
597         av_mallocz(sizeof(AVOutputStream));
598     if (!ost) {
599         fprintf(stderr, "Could not alloc output stream\n");
600         ffmpeg_exit(1);
601     }
602     ost->file_index = file_idx;
603     ost->index = idx;
604     return ost;
605 }
606
607 static int read_ffserver_streams(AVFormatContext *s, const char *filename)
608 {
609     int i, err;
610     AVFormatContext *ic;
611     int nopts = 0;
612
613     err = av_open_input_file(&ic, filename, NULL, FFM_PACKET_SIZE, NULL);
614     if (err < 0)
615         return err;
616     /* copy stream format */
617     s->nb_streams = 0;
618     for(i=0;i<ic->nb_streams;i++) {
619         AVStream *st;
620         AVCodec *codec;
621
622         s->nb_streams++;
623
624         // FIXME: a more elegant solution is needed
625         st = av_mallocz(sizeof(AVStream));
626         memcpy(st, ic->streams[i], sizeof(AVStream));
627         st->codec = avcodec_alloc_context();
628         if (!st->codec) {
629             print_error(filename, AVERROR(ENOMEM));
630             ffmpeg_exit(1);
631         }
632         avcodec_copy_context(st->codec, ic->streams[i]->codec);
633         s->streams[i] = st;
634
635         codec = avcodec_find_encoder(st->codec->codec_id);
636         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
637             if (audio_stream_copy) {
638                 st->stream_copy = 1;
639             } else
640                 choose_sample_fmt(st, codec);
641         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
642             if (video_stream_copy) {
643                 st->stream_copy = 1;
644             } else
645                 choose_pixel_fmt(st, codec);
646         }
647
648         if(st->codec->flags & CODEC_FLAG_BITEXACT)
649             nopts = 1;
650
651         new_output_stream(s, nb_output_files);
652     }
653
654     if (!nopts)
655         s->timestamp = av_gettime();
656
657     av_close_input_file(ic);
658     return 0;
659 }
660
661 static double
662 get_sync_ipts(const AVOutputStream *ost)
663 {
664     const AVInputStream *ist = ost->sync_ist;
665     return (double)(ist->pts - start_time)/AV_TIME_BASE;
666 }
667
668 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
669     int ret;
670
671     while(bsfc){
672         AVPacket new_pkt= *pkt;
673         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
674                                           &new_pkt.data, &new_pkt.size,
675                                           pkt->data, pkt->size,
676                                           pkt->flags & AV_PKT_FLAG_KEY);
677         if(a>0){
678             av_free_packet(pkt);
679             new_pkt.destruct= av_destruct_packet;
680         } else if(a<0){
681             fprintf(stderr, "%s failed for stream %d, codec %s",
682                     bsfc->filter->name, pkt->stream_index,
683                     avctx->codec ? avctx->codec->name : "copy");
684             print_error("", a);
685             if (exit_on_error)
686                 ffmpeg_exit(1);
687         }
688         *pkt= new_pkt;
689
690         bsfc= bsfc->next;
691     }
692
693     ret= av_interleaved_write_frame(s, pkt);
694     if(ret < 0){
695         print_error("av_interleaved_write_frame()", ret);
696         ffmpeg_exit(1);
697     }
698 }
699
700 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
701
702 static void do_audio_out(AVFormatContext *s,
703                          AVOutputStream *ost,
704                          AVInputStream *ist,
705                          unsigned char *buf, int size)
706 {
707     uint8_t *buftmp;
708     int64_t audio_out_size, audio_buf_size;
709     int64_t allocated_for_size= size;
710
711     int size_out, frame_bytes, ret, resample_changed;
712     AVCodecContext *enc= ost->st->codec;
713     AVCodecContext *dec= ist->st->codec;
714     int osize= av_get_bits_per_sample_fmt(enc->sample_fmt)/8;
715     int isize= av_get_bits_per_sample_fmt(dec->sample_fmt)/8;
716     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
717
718 need_realloc:
719     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
720     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
721     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
722     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
723     audio_buf_size*= osize*enc->channels;
724
725     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
726     if(coded_bps > 8*osize)
727         audio_out_size= audio_out_size * coded_bps / (8*osize);
728     audio_out_size += FF_MIN_BUFFER_SIZE;
729
730     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
731         fprintf(stderr, "Buffer sizes too large\n");
732         ffmpeg_exit(1);
733     }
734
735     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
736     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
737     if (!audio_buf || !audio_out){
738         fprintf(stderr, "Out of memory in do_audio_out\n");
739         ffmpeg_exit(1);
740     }
741
742     if (enc->channels != dec->channels)
743         ost->audio_resample = 1;
744
745     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
746                        ost->resample_channels    != dec->channels   ||
747                        ost->resample_sample_rate != dec->sample_rate;
748
749     if ((ost->audio_resample && !ost->resample) || resample_changed) {
750         if (resample_changed) {
751             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",
752                    ist->file_index, ist->index,
753                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
754                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
755             ost->resample_sample_fmt  = dec->sample_fmt;
756             ost->resample_channels    = dec->channels;
757             ost->resample_sample_rate = dec->sample_rate;
758             if (ost->resample)
759                 audio_resample_close(ost->resample);
760         }
761         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
762         if (audio_sync_method <= 1 &&
763             ost->resample_sample_fmt  == enc->sample_fmt &&
764             ost->resample_channels    == enc->channels   &&
765             ost->resample_sample_rate == enc->sample_rate) {
766             ost->resample = NULL;
767             ost->audio_resample = 0;
768         } else {
769             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
770                 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
771             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
772                                                    enc->sample_rate, dec->sample_rate,
773                                                    enc->sample_fmt,  dec->sample_fmt,
774                                                    16, 10, 0, 0.8);
775             if (!ost->resample) {
776                 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
777                         dec->channels, dec->sample_rate,
778                         enc->channels, enc->sample_rate);
779                 ffmpeg_exit(1);
780             }
781         }
782     }
783
784 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
785     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
786         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
787         if (ost->reformat_ctx)
788             av_audio_convert_free(ost->reformat_ctx);
789         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
790                                                    dec->sample_fmt, 1, NULL, 0);
791         if (!ost->reformat_ctx) {
792             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
793                 av_get_sample_fmt_name(dec->sample_fmt),
794                 av_get_sample_fmt_name(enc->sample_fmt));
795             ffmpeg_exit(1);
796         }
797         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
798     }
799
800     if(audio_sync_method){
801         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
802                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
803         double idelta= delta*dec->sample_rate / enc->sample_rate;
804         int byte_delta= ((int)idelta)*2*dec->channels;
805
806         //FIXME resample delay
807         if(fabs(delta) > 50){
808             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
809                 if(byte_delta < 0){
810                     byte_delta= FFMAX(byte_delta, -size);
811                     size += byte_delta;
812                     buf  -= byte_delta;
813                     if(verbose > 2)
814                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
815                     if(!size)
816                         return;
817                     ist->is_start=0;
818                 }else{
819                     static uint8_t *input_tmp= NULL;
820                     input_tmp= av_realloc(input_tmp, byte_delta + size);
821
822                     if(byte_delta > allocated_for_size - size){
823                         allocated_for_size= byte_delta + (int64_t)size;
824                         goto need_realloc;
825                     }
826                     ist->is_start=0;
827
828                     memset(input_tmp, 0, byte_delta);
829                     memcpy(input_tmp + byte_delta, buf, size);
830                     buf= input_tmp;
831                     size += byte_delta;
832                     if(verbose > 2)
833                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
834                 }
835             }else if(audio_sync_method>1){
836                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
837                 av_assert0(ost->audio_resample);
838                 if(verbose > 2)
839                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
840 //                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));
841                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
842             }
843         }
844     }else
845         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
846                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
847
848     if (ost->audio_resample) {
849         buftmp = audio_buf;
850         size_out = audio_resample(ost->resample,
851                                   (short *)buftmp, (short *)buf,
852                                   size / (dec->channels * isize));
853         size_out = size_out * enc->channels * osize;
854     } else {
855         buftmp = buf;
856         size_out = size;
857     }
858
859     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
860         const void *ibuf[6]= {buftmp};
861         void *obuf[6]= {audio_buf};
862         int istride[6]= {isize};
863         int ostride[6]= {osize};
864         int len= size_out/istride[0];
865         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
866             printf("av_audio_convert() failed\n");
867             if (exit_on_error)
868                 ffmpeg_exit(1);
869             return;
870         }
871         buftmp = audio_buf;
872         size_out = len*osize;
873     }
874
875     /* now encode as many frames as possible */
876     if (enc->frame_size > 1) {
877         /* output resampled raw samples */
878         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
879             fprintf(stderr, "av_fifo_realloc2() failed\n");
880             ffmpeg_exit(1);
881         }
882         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
883
884         frame_bytes = enc->frame_size * osize * enc->channels;
885
886         while (av_fifo_size(ost->fifo) >= frame_bytes) {
887             AVPacket pkt;
888             av_init_packet(&pkt);
889
890             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
891
892             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
893
894             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
895                                        (short *)audio_buf);
896             if (ret < 0) {
897                 fprintf(stderr, "Audio encoding failed\n");
898                 ffmpeg_exit(1);
899             }
900             audio_size += ret;
901             pkt.stream_index= ost->index;
902             pkt.data= audio_out;
903             pkt.size= ret;
904             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
905                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
906             pkt.flags |= AV_PKT_FLAG_KEY;
907             write_frame(s, &pkt, enc, ost->bitstream_filters);
908
909             ost->sync_opts += enc->frame_size;
910         }
911     } else {
912         AVPacket pkt;
913         av_init_packet(&pkt);
914
915         ost->sync_opts += size_out / (osize * enc->channels);
916
917         /* output a pcm frame */
918         /* determine the size of the coded buffer */
919         size_out /= osize;
920         if (coded_bps)
921             size_out = size_out*coded_bps/8;
922
923         if(size_out > audio_out_size){
924             fprintf(stderr, "Internal error, buffer size too small\n");
925             ffmpeg_exit(1);
926         }
927
928         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
929         ret = avcodec_encode_audio(enc, audio_out, size_out,
930                                    (short *)buftmp);
931         if (ret < 0) {
932             fprintf(stderr, "Audio encoding failed\n");
933             ffmpeg_exit(1);
934         }
935         audio_size += ret;
936         pkt.stream_index= ost->index;
937         pkt.data= audio_out;
938         pkt.size= ret;
939         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
940             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
941         pkt.flags |= AV_PKT_FLAG_KEY;
942         write_frame(s, &pkt, enc, ost->bitstream_filters);
943     }
944 }
945
946 static void pre_process_video_frame(AVInputStream *ist, AVPicture *picture, void **bufp)
947 {
948     AVCodecContext *dec;
949     AVPicture *picture2;
950     AVPicture picture_tmp;
951     uint8_t *buf = 0;
952
953     dec = ist->st->codec;
954
955     /* deinterlace : must be done before any resize */
956     if (do_deinterlace) {
957         int size;
958
959         /* create temporary picture */
960         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
961         buf = av_malloc(size);
962         if (!buf)
963             return;
964
965         picture2 = &picture_tmp;
966         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
967
968         if(avpicture_deinterlace(picture2, picture,
969                                  dec->pix_fmt, dec->width, dec->height) < 0) {
970             /* if error, do not deinterlace */
971             fprintf(stderr, "Deinterlacing failed\n");
972             av_free(buf);
973             buf = NULL;
974             picture2 = picture;
975         }
976     } else {
977         picture2 = picture;
978     }
979
980     if (picture != picture2)
981         *picture = *picture2;
982     *bufp = buf;
983 }
984
985 /* we begin to correct av delay at this threshold */
986 #define AV_DELAY_MAX 0.100
987
988 static void do_subtitle_out(AVFormatContext *s,
989                             AVOutputStream *ost,
990                             AVInputStream *ist,
991                             AVSubtitle *sub,
992                             int64_t pts)
993 {
994     static uint8_t *subtitle_out = NULL;
995     int subtitle_out_max_size = 1024 * 1024;
996     int subtitle_out_size, nb, i;
997     AVCodecContext *enc;
998     AVPacket pkt;
999
1000     if (pts == AV_NOPTS_VALUE) {
1001         fprintf(stderr, "Subtitle packets must have a pts\n");
1002         if (exit_on_error)
1003             ffmpeg_exit(1);
1004         return;
1005     }
1006
1007     enc = ost->st->codec;
1008
1009     if (!subtitle_out) {
1010         subtitle_out = av_malloc(subtitle_out_max_size);
1011     }
1012
1013     /* Note: DVB subtitle need one packet to draw them and one other
1014        packet to clear them */
1015     /* XXX: signal it in the codec context ? */
1016     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1017         nb = 2;
1018     else
1019         nb = 1;
1020
1021     for(i = 0; i < nb; i++) {
1022         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1023         // start_display_time is required to be 0
1024         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1025         sub->end_display_time -= sub->start_display_time;
1026         sub->start_display_time = 0;
1027         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1028                                                     subtitle_out_max_size, sub);
1029         if (subtitle_out_size < 0) {
1030             fprintf(stderr, "Subtitle encoding failed\n");
1031             ffmpeg_exit(1);
1032         }
1033
1034         av_init_packet(&pkt);
1035         pkt.stream_index = ost->index;
1036         pkt.data = subtitle_out;
1037         pkt.size = subtitle_out_size;
1038         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1039         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1040             /* XXX: the pts correction is handled here. Maybe handling
1041                it in the codec would be better */
1042             if (i == 0)
1043                 pkt.pts += 90 * sub->start_display_time;
1044             else
1045                 pkt.pts += 90 * sub->end_display_time;
1046         }
1047         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1048     }
1049 }
1050
1051 static int bit_buffer_size= 1024*256;
1052 static uint8_t *bit_buffer= NULL;
1053
1054 static void do_video_out(AVFormatContext *s,
1055                          AVOutputStream *ost,
1056                          AVInputStream *ist,
1057                          AVFrame *in_picture,
1058                          int *frame_size)
1059 {
1060     int nb_frames, i, ret;
1061     AVFrame *final_picture, *formatted_picture, *resampling_dst, *padding_src;
1062     AVCodecContext *enc, *dec;
1063     double sync_ipts;
1064
1065     enc = ost->st->codec;
1066     dec = ist->st->codec;
1067
1068     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1069
1070     /* by default, we output a single frame */
1071     nb_frames = 1;
1072
1073     *frame_size = 0;
1074
1075     if(video_sync_method){
1076         double vdelta = sync_ipts - ost->sync_opts;
1077         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1078         if (vdelta < -1.1)
1079             nb_frames = 0;
1080         else if (video_sync_method == 2 || (video_sync_method<0 && (s->oformat->flags & AVFMT_VARIABLE_FPS))){
1081             if(vdelta<=-0.6){
1082                 nb_frames=0;
1083             }else if(vdelta>0.6)
1084                 ost->sync_opts= lrintf(sync_ipts);
1085         }else if (vdelta > 1.1)
1086             nb_frames = lrintf(vdelta);
1087 //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);
1088         if (nb_frames == 0){
1089             ++nb_frames_drop;
1090             if (verbose>2)
1091                 fprintf(stderr, "*** drop!\n");
1092         }else if (nb_frames > 1) {
1093             nb_frames_dup += nb_frames - 1;
1094             if (verbose>2)
1095                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1096         }
1097     }else
1098         ost->sync_opts= lrintf(sync_ipts);
1099
1100     nb_frames= FFMIN(nb_frames, max_frames[AVMEDIA_TYPE_VIDEO] - ost->frame_number);
1101     if (nb_frames <= 0)
1102         return;
1103
1104     formatted_picture = in_picture;
1105     final_picture = formatted_picture;
1106     padding_src = formatted_picture;
1107     resampling_dst = &ost->pict_tmp;
1108
1109     if (   ost->resample_height != ist->st->codec->height
1110         || ost->resample_width  != ist->st->codec->width
1111         || (ost->resample_pix_fmt!= ist->st->codec->pix_fmt) ) {
1112
1113         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));
1114         if(!ost->video_resample)
1115             ffmpeg_exit(1);
1116     }
1117
1118 #if !CONFIG_AVFILTER
1119     if (ost->video_resample) {
1120         padding_src = NULL;
1121         final_picture = &ost->pict_tmp;
1122         if(  ost->resample_height != ist->st->codec->height
1123           || ost->resample_width  != ist->st->codec->width
1124           || (ost->resample_pix_fmt!= ist->st->codec->pix_fmt) ) {
1125
1126             /* initialize a new scaler context */
1127             sws_freeContext(ost->img_resample_ctx);
1128             sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
1129             ost->img_resample_ctx = sws_getContext(
1130                 ist->st->codec->width,
1131                 ist->st->codec->height,
1132                 ist->st->codec->pix_fmt,
1133                 ost->st->codec->width,
1134                 ost->st->codec->height,
1135                 ost->st->codec->pix_fmt,
1136                 sws_flags, NULL, NULL, NULL);
1137             if (ost->img_resample_ctx == NULL) {
1138                 fprintf(stderr, "Cannot get resampling context\n");
1139                 ffmpeg_exit(1);
1140             }
1141         }
1142         sws_scale(ost->img_resample_ctx, formatted_picture->data, formatted_picture->linesize,
1143               0, ost->resample_height, resampling_dst->data, resampling_dst->linesize);
1144     }
1145 #endif
1146
1147     /* duplicates frame if needed */
1148     for(i=0;i<nb_frames;i++) {
1149         AVPacket pkt;
1150         av_init_packet(&pkt);
1151         pkt.stream_index= ost->index;
1152
1153         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1154             /* raw pictures are written as AVPicture structure to
1155                avoid any copies. We support temorarily the older
1156                method. */
1157             AVFrame* old_frame = enc->coded_frame;
1158             enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
1159             pkt.data= (uint8_t *)final_picture;
1160             pkt.size=  sizeof(AVPicture);
1161             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1162             pkt.flags |= AV_PKT_FLAG_KEY;
1163
1164             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1165             enc->coded_frame = old_frame;
1166         } else {
1167             AVFrame big_picture;
1168
1169             big_picture= *final_picture;
1170             /* better than nothing: use input picture interlaced
1171                settings */
1172             big_picture.interlaced_frame = in_picture->interlaced_frame;
1173             if(avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)){
1174                 if(top_field_first == -1)
1175                     big_picture.top_field_first = in_picture->top_field_first;
1176                 else
1177                     big_picture.top_field_first = top_field_first;
1178             }
1179
1180             /* handles sameq here. This is not correct because it may
1181                not be a global option */
1182             big_picture.quality = same_quality ? ist->st->quality : ost->st->quality;
1183             if(!me_threshold)
1184                 big_picture.pict_type = 0;
1185 //            big_picture.pts = AV_NOPTS_VALUE;
1186             big_picture.pts= ost->sync_opts;
1187 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1188 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1189             if (ost->forced_kf_index < ost->forced_kf_count &&
1190                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1191                 big_picture.pict_type = FF_I_TYPE;
1192                 ost->forced_kf_index++;
1193             }
1194             ret = avcodec_encode_video(enc,
1195                                        bit_buffer, bit_buffer_size,
1196                                        &big_picture);
1197             if (ret < 0) {
1198                 fprintf(stderr, "Video encoding failed\n");
1199                 ffmpeg_exit(1);
1200             }
1201
1202             if(ret>0){
1203                 pkt.data= bit_buffer;
1204                 pkt.size= ret;
1205                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1206                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1207 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1208    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1209    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1210
1211                 if(enc->coded_frame->key_frame)
1212                     pkt.flags |= AV_PKT_FLAG_KEY;
1213                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1214                 *frame_size = ret;
1215                 video_size += ret;
1216                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1217                 //        enc->frame_number-1, ret, enc->pict_type);
1218                 /* if two pass, output log */
1219                 if (ost->logfile && enc->stats_out) {
1220                     fprintf(ost->logfile, "%s", enc->stats_out);
1221                 }
1222             }
1223         }
1224         ost->sync_opts++;
1225         ost->frame_number++;
1226     }
1227 }
1228
1229 static double psnr(double d){
1230     return -10.0*log(d)/log(10.0);
1231 }
1232
1233 static void do_video_stats(AVFormatContext *os, AVOutputStream *ost,
1234                            int frame_size)
1235 {
1236     AVCodecContext *enc;
1237     int frame_number;
1238     double ti1, bitrate, avg_bitrate;
1239
1240     /* this is executed just the first time do_video_stats is called */
1241     if (!vstats_file) {
1242         vstats_file = fopen(vstats_filename, "w");
1243         if (!vstats_file) {
1244             perror("fopen");
1245             ffmpeg_exit(1);
1246         }
1247     }
1248
1249     enc = ost->st->codec;
1250     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1251         frame_number = ost->frame_number;
1252         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1253         if (enc->flags&CODEC_FLAG_PSNR)
1254             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1255
1256         fprintf(vstats_file,"f_size= %6d ", frame_size);
1257         /* compute pts value */
1258         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1259         if (ti1 < 0.01)
1260             ti1 = 0.01;
1261
1262         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1263         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1264         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1265             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1266         fprintf(vstats_file,"type= %c\n", av_get_pict_type_char(enc->coded_frame->pict_type));
1267     }
1268 }
1269
1270 static void print_report(AVFormatContext **output_files,
1271                          AVOutputStream **ost_table, int nb_ostreams,
1272                          int is_last_report)
1273 {
1274     char buf[1024];
1275     AVOutputStream *ost;
1276     AVFormatContext *oc;
1277     int64_t total_size;
1278     AVCodecContext *enc;
1279     int frame_number, vid, i;
1280     double bitrate, ti1, pts;
1281     static int64_t last_time = -1;
1282     static int qp_histogram[52];
1283
1284     if (!is_last_report) {
1285         int64_t cur_time;
1286         /* display the report every 0.5 seconds */
1287         cur_time = av_gettime();
1288         if (last_time == -1) {
1289             last_time = cur_time;
1290             return;
1291         }
1292         if ((cur_time - last_time) < 500000)
1293             return;
1294         last_time = cur_time;
1295     }
1296
1297
1298     oc = output_files[0];
1299
1300     total_size = avio_size(oc->pb);
1301     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1302         total_size= avio_tell(oc->pb);
1303
1304     buf[0] = '\0';
1305     ti1 = 1e10;
1306     vid = 0;
1307     for(i=0;i<nb_ostreams;i++) {
1308         ost = ost_table[i];
1309         enc = ost->st->codec;
1310         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1311             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ",
1312                      !ost->st->stream_copy ?
1313                      enc->coded_frame->quality/(float)FF_QP2LAMBDA : -1);
1314         }
1315         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1316             float t = (av_gettime()-timer_start) / 1000000.0;
1317
1318             frame_number = ost->frame_number;
1319             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1320                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0,
1321                      !ost->st->stream_copy ?
1322                      enc->coded_frame->quality/(float)FF_QP2LAMBDA : -1);
1323             if(is_last_report)
1324                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1325             if(qp_hist){
1326                 int j;
1327                 int qp= lrintf(enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1328                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1329                     qp_histogram[qp]++;
1330                 for(j=0; j<32; j++)
1331                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1332             }
1333             if (enc->flags&CODEC_FLAG_PSNR){
1334                 int j;
1335                 double error, error_sum=0;
1336                 double scale, scale_sum=0;
1337                 char type[3]= {'Y','U','V'};
1338                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1339                 for(j=0; j<3; j++){
1340                     if(is_last_report){
1341                         error= enc->error[j];
1342                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1343                     }else{
1344                         error= enc->coded_frame->error[j];
1345                         scale= enc->width*enc->height*255.0*255.0;
1346                     }
1347                     if(j) scale/=4;
1348                     error_sum += error;
1349                     scale_sum += scale;
1350                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1351                 }
1352                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1353             }
1354             vid = 1;
1355         }
1356         /* compute min output value */
1357         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1358         if ((pts < ti1) && (pts > 0))
1359             ti1 = pts;
1360     }
1361     if (ti1 < 0.01)
1362         ti1 = 0.01;
1363
1364     if (verbose || is_last_report) {
1365         bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1366
1367         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1368             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1369             (double)total_size / 1024, ti1, bitrate);
1370
1371         if (nb_frames_dup || nb_frames_drop)
1372           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1373                   nb_frames_dup, nb_frames_drop);
1374
1375         if (verbose >= 0)
1376             fprintf(stderr, "%s    \r", buf);
1377
1378         fflush(stderr);
1379     }
1380
1381     if (is_last_report && verbose >= 0){
1382         int64_t raw= audio_size + video_size + extra_size;
1383         fprintf(stderr, "\n");
1384         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1385                 video_size/1024.0,
1386                 audio_size/1024.0,
1387                 extra_size/1024.0,
1388                 100.0*(total_size - raw)/raw
1389         );
1390     }
1391 }
1392
1393 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1394 {
1395     int fill_char = 0x00;
1396     if (sample_fmt == AV_SAMPLE_FMT_U8)
1397         fill_char = 0x80;
1398     memset(buf, fill_char, size);
1399 }
1400
1401 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1402 static int output_packet(AVInputStream *ist, int ist_index,
1403                          AVOutputStream **ost_table, int nb_ostreams,
1404                          const AVPacket *pkt)
1405 {
1406     AVFormatContext *os;
1407     AVOutputStream *ost;
1408     int ret, i;
1409     int got_picture;
1410     AVFrame picture;
1411     void *buffer_to_free;
1412     static unsigned int samples_size= 0;
1413     AVSubtitle subtitle, *subtitle_to_free;
1414     int64_t pkt_pts = AV_NOPTS_VALUE;
1415 #if CONFIG_AVFILTER
1416     int frame_available;
1417 #endif
1418
1419     AVPacket avpkt;
1420     int bps = av_get_bits_per_sample_fmt(ist->st->codec->sample_fmt)>>3;
1421
1422     if(ist->next_pts == AV_NOPTS_VALUE)
1423         ist->next_pts= ist->pts;
1424
1425     if (pkt == NULL) {
1426         /* EOF handling */
1427         av_init_packet(&avpkt);
1428         avpkt.data = NULL;
1429         avpkt.size = 0;
1430         goto handle_eof;
1431     } else {
1432         avpkt = *pkt;
1433     }
1434
1435     if(pkt->dts != AV_NOPTS_VALUE)
1436         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1437     if(pkt->pts != AV_NOPTS_VALUE)
1438         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1439
1440     //while we have more to decode or while the decoder did output something on EOF
1441     while (avpkt.size > 0 || (!pkt && ist->next_pts != ist->pts)) {
1442         uint8_t *data_buf, *decoded_data_buf;
1443         int data_size, decoded_data_size;
1444     handle_eof:
1445         ist->pts= ist->next_pts;
1446
1447         if(avpkt.size && avpkt.size != pkt->size &&
1448            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1449             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1450             ist->showed_multi_packet_warning=1;
1451         }
1452
1453         /* decode the packet if needed */
1454         decoded_data_buf = NULL; /* fail safe */
1455         decoded_data_size= 0;
1456         data_buf  = avpkt.data;
1457         data_size = avpkt.size;
1458         subtitle_to_free = NULL;
1459         if (ist->decoding_needed) {
1460             switch(ist->st->codec->codec_type) {
1461             case AVMEDIA_TYPE_AUDIO:{
1462                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1463                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1464                     av_free(samples);
1465                     samples= av_malloc(samples_size);
1466                 }
1467                 decoded_data_size= samples_size;
1468                     /* XXX: could avoid copy if PCM 16 bits with same
1469                        endianness as CPU */
1470                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1471                                             &avpkt);
1472                 if (ret < 0)
1473                     goto fail_decode;
1474                 avpkt.data += ret;
1475                 avpkt.size -= ret;
1476                 data_size   = ret;
1477                 /* Some bug in mpeg audio decoder gives */
1478                 /* decoded_data_size < 0, it seems they are overflows */
1479                 if (decoded_data_size <= 0) {
1480                     /* no audio frame */
1481                     continue;
1482                 }
1483                 decoded_data_buf = (uint8_t *)samples;
1484                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1485                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1486                 break;}
1487             case AVMEDIA_TYPE_VIDEO:
1488                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1489                     /* XXX: allocate picture correctly */
1490                     avcodec_get_frame_defaults(&picture);
1491                     avpkt.pts = pkt_pts;
1492                     avpkt.dts = ist->pts;
1493                     pkt_pts = AV_NOPTS_VALUE;
1494
1495                     ret = avcodec_decode_video2(ist->st->codec,
1496                                                 &picture, &got_picture, &avpkt);
1497                     ist->st->quality= picture.quality;
1498                     if (ret < 0)
1499                         goto fail_decode;
1500                     if (!got_picture) {
1501                         /* no picture yet */
1502                         goto discard_packet;
1503                     }
1504                     ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, picture.pkt_pts, picture.pkt_dts);
1505                     if (ist->st->codec->time_base.num != 0) {
1506                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1507                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1508                                           ist->st->codec->time_base.num * ticks) /
1509                             ist->st->codec->time_base.den;
1510                     }
1511                     avpkt.size = 0;
1512                     break;
1513             case AVMEDIA_TYPE_SUBTITLE:
1514                 ret = avcodec_decode_subtitle2(ist->st->codec,
1515                                                &subtitle, &got_picture, &avpkt);
1516                 if (ret < 0)
1517                     goto fail_decode;
1518                 if (!got_picture) {
1519                     goto discard_packet;
1520                 }
1521                 subtitle_to_free = &subtitle;
1522                 avpkt.size = 0;
1523                 break;
1524             default:
1525                 goto fail_decode;
1526             }
1527         } else {
1528             switch(ist->st->codec->codec_type) {
1529             case AVMEDIA_TYPE_AUDIO:
1530                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1531                     ist->st->codec->sample_rate;
1532                 break;
1533             case AVMEDIA_TYPE_VIDEO:
1534                 if (ist->st->codec->time_base.num != 0) {
1535                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1536                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1537                                       ist->st->codec->time_base.num * ticks) /
1538                         ist->st->codec->time_base.den;
1539                 }
1540                 break;
1541             }
1542             ret = avpkt.size;
1543             avpkt.size = 0;
1544         }
1545
1546         buffer_to_free = NULL;
1547         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1548             pre_process_video_frame(ist, (AVPicture *)&picture,
1549                                     &buffer_to_free);
1550         }
1551
1552 #if CONFIG_AVFILTER
1553         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ist->input_video_filter) {
1554             AVRational sar;
1555             if (ist->st->sample_aspect_ratio.num) sar = ist->st->sample_aspect_ratio;
1556             else                                  sar = ist->st->codec->sample_aspect_ratio;
1557             // add it to be filtered
1558             av_vsrc_buffer_add_frame(ist->input_video_filter, &picture,
1559                                      ist->pts,
1560                                      sar);
1561         }
1562 #endif
1563
1564         // preprocess audio (volume)
1565         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1566             if (audio_volume != 256) {
1567                 short *volp;
1568                 volp = samples;
1569                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1570                     int v = ((*volp) * audio_volume + 128) >> 8;
1571                     if (v < -32768) v = -32768;
1572                     if (v >  32767) v = 32767;
1573                     *volp++ = v;
1574                 }
1575             }
1576         }
1577
1578         /* frame rate emulation */
1579         if (rate_emu) {
1580             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1581             int64_t now = av_gettime() - ist->start;
1582             if (pts > now)
1583                 usleep(pts - now);
1584         }
1585 #if CONFIG_AVFILTER
1586         frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1587             !ist->output_video_filter || avfilter_poll_frame(ist->output_video_filter->inputs[0]);
1588 #endif
1589         /* if output time reached then transcode raw format,
1590            encode packets and output them */
1591         if (start_time == 0 || ist->pts >= start_time)
1592 #if CONFIG_AVFILTER
1593         while (frame_available) {
1594             AVRational ist_pts_tb;
1595             if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ist->output_video_filter)
1596                 get_filtered_video_frame(ist->output_video_filter, &picture, &ist->picref, &ist_pts_tb);
1597             if (ist->picref)
1598                 ist->pts = av_rescale_q(ist->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1599 #endif
1600             for(i=0;i<nb_ostreams;i++) {
1601                 int frame_size;
1602
1603                 ost = ost_table[i];
1604                 if (ost->source_index == ist_index) {
1605                     os = output_files[ost->file_index];
1606
1607                     /* set the input output pts pairs */
1608                     //ost->sync_ipts = (double)(ist->pts + input_files_ts_offset[ist->file_index] - start_time)/ AV_TIME_BASE;
1609
1610                     if (ost->encoding_needed) {
1611                         av_assert0(ist->decoding_needed);
1612                         switch(ost->st->codec->codec_type) {
1613                         case AVMEDIA_TYPE_AUDIO:
1614                             do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1615                             break;
1616                         case AVMEDIA_TYPE_VIDEO:
1617 #if CONFIG_AVFILTER
1618                             if (ist->picref->video)
1619                                 ost->st->codec->sample_aspect_ratio = ist->picref->video->pixel_aspect;
1620 #endif
1621                             do_video_out(os, ost, ist, &picture, &frame_size);
1622                             if (vstats_filename && frame_size)
1623                                 do_video_stats(os, ost, frame_size);
1624                             break;
1625                         case AVMEDIA_TYPE_SUBTITLE:
1626                             do_subtitle_out(os, ost, ist, &subtitle,
1627                                             pkt->pts);
1628                             break;
1629                         default:
1630                             abort();
1631                         }
1632                     } else {
1633                         AVFrame avframe; //FIXME/XXX remove this
1634                         AVPacket opkt;
1635                         int64_t ost_tb_start_time= av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1636
1637                         av_init_packet(&opkt);
1638
1639                         if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1640                             continue;
1641
1642                         /* no reencoding needed : output the packet directly */
1643                         /* force the input stream PTS */
1644
1645                         avcodec_get_frame_defaults(&avframe);
1646                         ost->st->codec->coded_frame= &avframe;
1647                         avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1648
1649                         if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1650                             audio_size += data_size;
1651                         else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1652                             video_size += data_size;
1653                             ost->sync_opts++;
1654                         }
1655
1656                         opkt.stream_index= ost->index;
1657                         if(pkt->pts != AV_NOPTS_VALUE)
1658                             opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1659                         else
1660                             opkt.pts= AV_NOPTS_VALUE;
1661
1662                         if (pkt->dts == AV_NOPTS_VALUE)
1663                             opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1664                         else
1665                             opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1666                         opkt.dts -= ost_tb_start_time;
1667
1668                         opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1669                         opkt.flags= pkt->flags;
1670
1671                         //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1672                         if(   ost->st->codec->codec_id != CODEC_ID_H264
1673                            && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1674                            && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1675                            ) {
1676                             if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1677                                 opkt.destruct= av_destruct_packet;
1678                         } else {
1679                             opkt.data = data_buf;
1680                             opkt.size = data_size;
1681                         }
1682
1683                         write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1684                         ost->st->codec->frame_number++;
1685                         ost->frame_number++;
1686                         av_free_packet(&opkt);
1687                     }
1688                 }
1689             }
1690
1691 #if CONFIG_AVFILTER
1692             frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1693                               ist->output_video_filter && avfilter_poll_frame(ist->output_video_filter->inputs[0]);
1694             if(ist->picref)
1695                 avfilter_unref_buffer(ist->picref);
1696         }
1697 #endif
1698         av_free(buffer_to_free);
1699         /* XXX: allocate the subtitles in the codec ? */
1700         if (subtitle_to_free) {
1701             avsubtitle_free(subtitle_to_free);
1702             subtitle_to_free = NULL;
1703         }
1704     }
1705  discard_packet:
1706     if (pkt == NULL) {
1707         /* EOF handling */
1708
1709         for(i=0;i<nb_ostreams;i++) {
1710             ost = ost_table[i];
1711             if (ost->source_index == ist_index) {
1712                 AVCodecContext *enc= ost->st->codec;
1713                 os = output_files[ost->file_index];
1714
1715                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1716                     continue;
1717                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1718                     continue;
1719
1720                 if (ost->encoding_needed) {
1721                     for(;;) {
1722                         AVPacket pkt;
1723                         int fifo_bytes;
1724                         av_init_packet(&pkt);
1725                         pkt.stream_index= ost->index;
1726
1727                         switch(ost->st->codec->codec_type) {
1728                         case AVMEDIA_TYPE_AUDIO:
1729                             fifo_bytes = av_fifo_size(ost->fifo);
1730                             ret = 0;
1731                             /* encode any samples remaining in fifo */
1732                             if (fifo_bytes > 0) {
1733                                 int osize = av_get_bits_per_sample_fmt(enc->sample_fmt) >> 3;
1734                                 int fs_tmp = enc->frame_size;
1735
1736                                 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1737                                 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1738                                     enc->frame_size = fifo_bytes / (osize * enc->channels);
1739                                 } else { /* pad */
1740                                     int frame_bytes = enc->frame_size*osize*enc->channels;
1741                                     if (allocated_audio_buf_size < frame_bytes)
1742                                         ffmpeg_exit(1);
1743                                     generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1744                                 }
1745
1746                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1747                                 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1748                                                           ost->st->time_base.num, enc->sample_rate);
1749                                 enc->frame_size = fs_tmp;
1750                             }
1751                             if(ret <= 0) {
1752                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1753                             }
1754                             if (ret < 0) {
1755                                 fprintf(stderr, "Audio encoding failed\n");
1756                                 ffmpeg_exit(1);
1757                             }
1758                             audio_size += ret;
1759                             pkt.flags |= AV_PKT_FLAG_KEY;
1760                             break;
1761                         case AVMEDIA_TYPE_VIDEO:
1762                             ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1763                             if (ret < 0) {
1764                                 fprintf(stderr, "Video encoding failed\n");
1765                                 ffmpeg_exit(1);
1766                             }
1767                             video_size += ret;
1768                             if(enc->coded_frame && enc->coded_frame->key_frame)
1769                                 pkt.flags |= AV_PKT_FLAG_KEY;
1770                             if (ost->logfile && enc->stats_out) {
1771                                 fprintf(ost->logfile, "%s", enc->stats_out);
1772                             }
1773                             break;
1774                         default:
1775                             ret=-1;
1776                         }
1777
1778                         if(ret<=0)
1779                             break;
1780                         pkt.data= bit_buffer;
1781                         pkt.size= ret;
1782                         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1783                             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1784                         write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1785                     }
1786                 }
1787             }
1788         }
1789     }
1790
1791     return 0;
1792  fail_decode:
1793     return -1;
1794 }
1795
1796 static void print_sdp(AVFormatContext **avc, int n)
1797 {
1798     char sdp[2048];
1799
1800     avf_sdp_create(avc, n, sdp, sizeof(sdp));
1801     printf("SDP:\n%s\n", sdp);
1802     fflush(stdout);
1803 }
1804
1805 static int copy_chapters(int infile, int outfile)
1806 {
1807     AVFormatContext *is = input_files[infile];
1808     AVFormatContext *os = output_files[outfile];
1809     int i;
1810
1811     for (i = 0; i < is->nb_chapters; i++) {
1812         AVChapter *in_ch = is->chapters[i], *out_ch;
1813         int64_t ts_off   = av_rescale_q(start_time - input_files_ts_offset[infile],
1814                                       AV_TIME_BASE_Q, in_ch->time_base);
1815         int64_t rt       = (recording_time == INT64_MAX) ? INT64_MAX :
1816                            av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
1817
1818
1819         if (in_ch->end < ts_off)
1820             continue;
1821         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
1822             break;
1823
1824         out_ch = av_mallocz(sizeof(AVChapter));
1825         if (!out_ch)
1826             return AVERROR(ENOMEM);
1827
1828         out_ch->id        = in_ch->id;
1829         out_ch->time_base = in_ch->time_base;
1830         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
1831         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
1832
1833         if (metadata_chapters_autocopy)
1834             av_metadata_copy(&out_ch->metadata, in_ch->metadata, 0);
1835
1836         os->nb_chapters++;
1837         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
1838         if (!os->chapters)
1839             return AVERROR(ENOMEM);
1840         os->chapters[os->nb_chapters - 1] = out_ch;
1841     }
1842     return 0;
1843 }
1844
1845 static void parse_forced_key_frames(char *kf, AVOutputStream *ost,
1846                                     AVCodecContext *avctx)
1847 {
1848     char *p;
1849     int n = 1, i;
1850     int64_t t;
1851
1852     for (p = kf; *p; p++)
1853         if (*p == ',')
1854             n++;
1855     ost->forced_kf_count = n;
1856     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1857     if (!ost->forced_kf_pts) {
1858         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1859         ffmpeg_exit(1);
1860     }
1861     for (i = 0; i < n; i++) {
1862         p = i ? strchr(p, ',') + 1 : kf;
1863         t = parse_time_or_die("force_key_frames", p, 1);
1864         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1865     }
1866 }
1867
1868 /*
1869  * The following code is the main loop of the file converter
1870  */
1871 static int transcode(AVFormatContext **output_files,
1872                      int nb_output_files,
1873                      AVFormatContext **input_files,
1874                      int nb_input_files,
1875                      AVStreamMap *stream_maps, int nb_stream_maps)
1876 {
1877     int ret = 0, i, j, k, n, nb_istreams = 0, nb_ostreams = 0;
1878     AVFormatContext *is, *os;
1879     AVCodecContext *codec, *icodec;
1880     AVOutputStream *ost, **ost_table = NULL;
1881     AVInputStream *ist, **ist_table = NULL;
1882     AVInputFile *file_table;
1883     char error[1024];
1884     int key;
1885     int want_sdp = 1;
1886     uint8_t no_packet[MAX_FILES]={0};
1887     int no_packet_count=0;
1888
1889     file_table= av_mallocz(nb_input_files * sizeof(AVInputFile));
1890     if (!file_table)
1891         goto fail;
1892
1893     /* input stream init */
1894     j = 0;
1895     for(i=0;i<nb_input_files;i++) {
1896         is = input_files[i];
1897         file_table[i].ist_index = j;
1898         file_table[i].nb_streams = is->nb_streams;
1899         j += is->nb_streams;
1900     }
1901     nb_istreams = j;
1902
1903     ist_table = av_mallocz(nb_istreams * sizeof(AVInputStream *));
1904     if (!ist_table)
1905         goto fail;
1906
1907     for(i=0;i<nb_istreams;i++) {
1908         ist = av_mallocz(sizeof(AVInputStream));
1909         if (!ist)
1910             goto fail;
1911         ist_table[i] = ist;
1912     }
1913     j = 0;
1914     for(i=0;i<nb_input_files;i++) {
1915         is = input_files[i];
1916         for(k=0;k<is->nb_streams;k++) {
1917             ist = ist_table[j++];
1918             ist->st = is->streams[k];
1919             ist->file_index = i;
1920             ist->index = k;
1921             ist->discard = 1; /* the stream is discarded by default
1922                                  (changed later) */
1923
1924             if (rate_emu) {
1925                 ist->start = av_gettime();
1926             }
1927         }
1928     }
1929
1930     /* output stream init */
1931     nb_ostreams = 0;
1932     for(i=0;i<nb_output_files;i++) {
1933         os = output_files[i];
1934         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1935             av_dump_format(output_files[i], i, output_files[i]->filename, 1);
1936             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
1937             ret = AVERROR(EINVAL);
1938             goto fail;
1939         }
1940         nb_ostreams += os->nb_streams;
1941     }
1942     if (nb_stream_maps > 0 && nb_stream_maps != nb_ostreams) {
1943         fprintf(stderr, "Number of stream maps must match number of output streams\n");
1944         ret = AVERROR(EINVAL);
1945         goto fail;
1946     }
1947
1948     /* Sanity check the mapping args -- do the input files & streams exist? */
1949     for(i=0;i<nb_stream_maps;i++) {
1950         int fi = stream_maps[i].file_index;
1951         int si = stream_maps[i].stream_index;
1952
1953         if (fi < 0 || fi > nb_input_files - 1 ||
1954             si < 0 || si > file_table[fi].nb_streams - 1) {
1955             fprintf(stderr,"Could not find input stream #%d.%d\n", fi, si);
1956             ret = AVERROR(EINVAL);
1957             goto fail;
1958         }
1959         fi = stream_maps[i].sync_file_index;
1960         si = stream_maps[i].sync_stream_index;
1961         if (fi < 0 || fi > nb_input_files - 1 ||
1962             si < 0 || si > file_table[fi].nb_streams - 1) {
1963             fprintf(stderr,"Could not find sync stream #%d.%d\n", fi, si);
1964             ret = AVERROR(EINVAL);
1965             goto fail;
1966         }
1967     }
1968
1969     ost_table = av_mallocz(sizeof(AVOutputStream *) * nb_ostreams);
1970     if (!ost_table)
1971         goto fail;
1972     n = 0;
1973     for(k=0;k<nb_output_files;k++) {
1974         os = output_files[k];
1975         for(i=0;i<os->nb_streams;i++,n++) {
1976             int found;
1977             ost = ost_table[n] = output_streams_for_file[k][i];
1978             ost->st = os->streams[i];
1979             if (nb_stream_maps > 0) {
1980                 ost->source_index = file_table[stream_maps[n].file_index].ist_index +
1981                     stream_maps[n].stream_index;
1982
1983                 /* Sanity check that the stream types match */
1984                 if (ist_table[ost->source_index]->st->codec->codec_type != ost->st->codec->codec_type) {
1985                     int i= ost->file_index;
1986                     av_dump_format(output_files[i], i, output_files[i]->filename, 1);
1987                     fprintf(stderr, "Codec type mismatch for mapping #%d.%d -> #%d.%d\n",
1988                         stream_maps[n].file_index, stream_maps[n].stream_index,
1989                         ost->file_index, ost->index);
1990                     ffmpeg_exit(1);
1991                 }
1992
1993             } else {
1994                 int best_nb_frames=-1;
1995                 /* get corresponding input stream index : we select the first one with the right type */
1996                 found = 0;
1997                 for(j=0;j<nb_istreams;j++) {
1998                     int skip=0;
1999                     ist = ist_table[j];
2000                     if(opt_programid){
2001                         int pi,si;
2002                         AVFormatContext *f= input_files[ ist->file_index ];
2003                         skip=1;
2004                         for(pi=0; pi<f->nb_programs; pi++){
2005                             AVProgram *p= f->programs[pi];
2006                             if(p->id == opt_programid)
2007                                 for(si=0; si<p->nb_stream_indexes; si++){
2008                                     if(f->streams[ p->stream_index[si] ] == ist->st)
2009                                         skip=0;
2010                                 }
2011                         }
2012                     }
2013                     if (ist->discard && ist->st->discard != AVDISCARD_ALL && !skip &&
2014                         ist->st->codec->codec_type == ost->st->codec->codec_type) {
2015                         if(best_nb_frames < ist->st->codec_info_nb_frames){
2016                             best_nb_frames= ist->st->codec_info_nb_frames;
2017                             ost->source_index = j;
2018                             found = 1;
2019                         }
2020                     }
2021                 }
2022
2023                 if (!found) {
2024                     if(! opt_programid) {
2025                         /* try again and reuse existing stream */
2026                         for(j=0;j<nb_istreams;j++) {
2027                             ist = ist_table[j];
2028                             if (   ist->st->codec->codec_type == ost->st->codec->codec_type
2029                                 && ist->st->discard != AVDISCARD_ALL) {
2030                                 ost->source_index = j;
2031                                 found = 1;
2032                             }
2033                         }
2034                     }
2035                     if (!found) {
2036                         int i= ost->file_index;
2037                         av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2038                         fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",
2039                                 ost->file_index, ost->index);
2040                         ffmpeg_exit(1);
2041                     }
2042                 }
2043             }
2044             ist = ist_table[ost->source_index];
2045             ist->discard = 0;
2046             ost->sync_ist = (nb_stream_maps > 0) ?
2047                 ist_table[file_table[stream_maps[n].sync_file_index].ist_index +
2048                          stream_maps[n].sync_stream_index] : ist;
2049         }
2050     }
2051
2052     /* for each output stream, we compute the right encoding parameters */
2053     for(i=0;i<nb_ostreams;i++) {
2054         ost = ost_table[i];
2055         os = output_files[ost->file_index];
2056         ist = ist_table[ost->source_index];
2057
2058         codec = ost->st->codec;
2059         icodec = ist->st->codec;
2060
2061         if (metadata_streams_autocopy)
2062             av_metadata_copy(&ost->st->metadata, ist->st->metadata,
2063                              AV_METADATA_DONT_OVERWRITE);
2064
2065         ost->st->disposition = ist->st->disposition;
2066         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2067         codec->chroma_sample_location = icodec->chroma_sample_location;
2068
2069         if (ost->st->stream_copy) {
2070             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2071
2072             if (extra_size > INT_MAX)
2073                 goto fail;
2074
2075             /* if stream_copy is selected, no need to decode or encode */
2076             codec->codec_id = icodec->codec_id;
2077             codec->codec_type = icodec->codec_type;
2078
2079             if(!codec->codec_tag){
2080                 if(   !os->oformat->codec_tag
2081                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2082                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2083                     codec->codec_tag = icodec->codec_tag;
2084             }
2085
2086             codec->bit_rate = icodec->bit_rate;
2087             codec->rc_max_rate    = icodec->rc_max_rate;
2088             codec->rc_buffer_size = icodec->rc_buffer_size;
2089             codec->extradata= av_mallocz(extra_size);
2090             if (!codec->extradata)
2091                 goto fail;
2092             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2093             codec->extradata_size= icodec->extradata_size;
2094             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){
2095                 codec->time_base = icodec->time_base;
2096                 codec->time_base.num *= icodec->ticks_per_frame;
2097                 av_reduce(&codec->time_base.num, &codec->time_base.den,
2098                           codec->time_base.num, codec->time_base.den, INT_MAX);
2099             }else
2100                 codec->time_base = ist->st->time_base;
2101             switch(codec->codec_type) {
2102             case AVMEDIA_TYPE_AUDIO:
2103                 if(audio_volume != 256) {
2104                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2105                     ffmpeg_exit(1);
2106                 }
2107                 codec->channel_layout = icodec->channel_layout;
2108                 codec->sample_rate = icodec->sample_rate;
2109                 codec->channels = icodec->channels;
2110                 codec->frame_size = icodec->frame_size;
2111                 codec->audio_service_type = icodec->audio_service_type;
2112                 codec->block_align= icodec->block_align;
2113                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2114                     codec->block_align= 0;
2115                 if(codec->codec_id == CODEC_ID_AC3)
2116                     codec->block_align= 0;
2117                 break;
2118             case AVMEDIA_TYPE_VIDEO:
2119                 codec->pix_fmt = icodec->pix_fmt;
2120                 codec->width = icodec->width;
2121                 codec->height = icodec->height;
2122                 codec->has_b_frames = icodec->has_b_frames;
2123                 break;
2124             case AVMEDIA_TYPE_SUBTITLE:
2125                 codec->width = icodec->width;
2126                 codec->height = icodec->height;
2127                 break;
2128             default:
2129                 abort();
2130             }
2131         } else {
2132             switch(codec->codec_type) {
2133             case AVMEDIA_TYPE_AUDIO:
2134                 ost->fifo= av_fifo_alloc(1024);
2135                 if(!ost->fifo)
2136                     goto fail;
2137                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2138                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2139                 icodec->request_channels = codec->channels;
2140                 ist->decoding_needed = 1;
2141                 ost->encoding_needed = 1;
2142                 ost->resample_sample_fmt  = icodec->sample_fmt;
2143                 ost->resample_sample_rate = icodec->sample_rate;
2144                 ost->resample_channels    = icodec->channels;
2145                 break;
2146             case AVMEDIA_TYPE_VIDEO:
2147                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2148                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2149                     ffmpeg_exit(1);
2150                 }
2151                 ost->video_resample = (codec->width != icodec->width   ||
2152                                        codec->height != icodec->height ||
2153                         (codec->pix_fmt != icodec->pix_fmt));
2154                 if (ost->video_resample) {
2155 #if !CONFIG_AVFILTER
2156                     avcodec_get_frame_defaults(&ost->pict_tmp);
2157                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2158                                          codec->width, codec->height)) {
2159                         fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
2160                         ffmpeg_exit(1);
2161                     }
2162                     sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
2163                     ost->img_resample_ctx = sws_getContext(
2164                         icodec->width,
2165                         icodec->height,
2166                             icodec->pix_fmt,
2167                             codec->width,
2168                             codec->height,
2169                             codec->pix_fmt,
2170                             sws_flags, NULL, NULL, NULL);
2171                     if (ost->img_resample_ctx == NULL) {
2172                         fprintf(stderr, "Cannot get resampling context\n");
2173                         ffmpeg_exit(1);
2174                     }
2175
2176                     ost->original_height = icodec->height;
2177                     ost->original_width  = icodec->width;
2178 #endif
2179                     codec->bits_per_raw_sample= 0;
2180                 }
2181                 ost->resample_height = icodec->height;
2182                 ost->resample_width  = icodec->width;
2183                 ost->resample_pix_fmt= icodec->pix_fmt;
2184                 ost->encoding_needed = 1;
2185                 ist->decoding_needed = 1;
2186
2187 #if CONFIG_AVFILTER
2188                 if (configure_filters(ist, ost)) {
2189                     fprintf(stderr, "Error opening filters!\n");
2190                     exit(1);
2191                 }
2192 #endif
2193                 break;
2194             case AVMEDIA_TYPE_SUBTITLE:
2195                 ost->encoding_needed = 1;
2196                 ist->decoding_needed = 1;
2197                 break;
2198             default:
2199                 abort();
2200                 break;
2201             }
2202             /* two pass mode */
2203             if (ost->encoding_needed &&
2204                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2205                 char logfilename[1024];
2206                 FILE *f;
2207
2208                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2209                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2210                          i);
2211                 if (codec->flags & CODEC_FLAG_PASS1) {
2212                     f = fopen(logfilename, "wb");
2213                     if (!f) {
2214                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2215                         ffmpeg_exit(1);
2216                     }
2217                     ost->logfile = f;
2218                 } else {
2219                     char  *logbuffer;
2220                     size_t logbuffer_size;
2221                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2222                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2223                         ffmpeg_exit(1);
2224                     }
2225                     codec->stats_in = logbuffer;
2226                 }
2227             }
2228         }
2229         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2230             int size= codec->width * codec->height;
2231             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2232         }
2233     }
2234
2235     if (!bit_buffer)
2236         bit_buffer = av_malloc(bit_buffer_size);
2237     if (!bit_buffer) {
2238         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2239                 bit_buffer_size);
2240         ret = AVERROR(ENOMEM);
2241         goto fail;
2242     }
2243
2244     /* open each encoder */
2245     for(i=0;i<nb_ostreams;i++) {
2246         ost = ost_table[i];
2247         if (ost->encoding_needed) {
2248             AVCodec *codec = i < nb_output_codecs ? output_codecs[i] : NULL;
2249             AVCodecContext *dec = ist_table[ost->source_index]->st->codec;
2250             if (!codec)
2251                 codec = avcodec_find_encoder(ost->st->codec->codec_id);
2252             if (!codec) {
2253                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2254                          ost->st->codec->codec_id, ost->file_index, ost->index);
2255                 ret = AVERROR(EINVAL);
2256                 goto dump_format;
2257             }
2258             if (dec->subtitle_header) {
2259                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2260                 if (!ost->st->codec->subtitle_header) {
2261                     ret = AVERROR(ENOMEM);
2262                     goto dump_format;
2263                 }
2264                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2265                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2266             }
2267             if (avcodec_open(ost->st->codec, codec) < 0) {
2268                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2269                         ost->file_index, ost->index);
2270                 ret = AVERROR(EINVAL);
2271                 goto dump_format;
2272             }
2273             extra_size += ost->st->codec->extradata_size;
2274         }
2275     }
2276
2277     /* open each decoder */
2278     for(i=0;i<nb_istreams;i++) {
2279         ist = ist_table[i];
2280         if (ist->decoding_needed) {
2281             AVCodec *codec = i < nb_input_codecs ? input_codecs[i] : NULL;
2282             if (!codec)
2283                 codec = avcodec_find_decoder(ist->st->codec->codec_id);
2284             if (!codec) {
2285                 snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
2286                         ist->st->codec->codec_id, ist->file_index, ist->index);
2287                 ret = AVERROR(EINVAL);
2288                 goto dump_format;
2289             }
2290             if (avcodec_open(ist->st->codec, codec) < 0) {
2291                 snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
2292                         ist->file_index, ist->index);
2293                 ret = AVERROR(EINVAL);
2294                 goto dump_format;
2295             }
2296             //if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2297             //    ist->st->codec->flags |= CODEC_FLAG_REPEAT_FIELD;
2298         }
2299     }
2300
2301     /* init pts */
2302     for(i=0;i<nb_istreams;i++) {
2303         AVStream *st;
2304         ist = ist_table[i];
2305         st= ist->st;
2306         ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
2307         ist->next_pts = AV_NOPTS_VALUE;
2308         init_pts_correction(&ist->pts_ctx);
2309         ist->is_start = 1;
2310     }
2311
2312     /* set meta data information from input file if required */
2313     for (i=0;i<nb_meta_data_maps;i++) {
2314         AVFormatContext *files[2];
2315         AVMetadata      **meta[2];
2316         int j;
2317
2318 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
2319         if ((index) < 0 || (index) >= (nb_elems)) {\
2320             snprintf(error, sizeof(error), "Invalid %s index %d while processing metadata maps\n",\
2321                      (desc), (index));\
2322             ret = AVERROR(EINVAL);\
2323             goto dump_format;\
2324         }
2325
2326         int out_file_index = meta_data_maps[i][0].file;
2327         int in_file_index = meta_data_maps[i][1].file;
2328         if (in_file_index < 0 || out_file_index < 0)
2329             continue;
2330         METADATA_CHECK_INDEX(out_file_index, nb_output_files, "output file")
2331         METADATA_CHECK_INDEX(in_file_index, nb_input_files, "input file")
2332
2333         files[0] = output_files[out_file_index];
2334         files[1] = input_files[in_file_index];
2335
2336         for (j = 0; j < 2; j++) {
2337             AVMetaDataMap *map = &meta_data_maps[i][j];
2338
2339             switch (map->type) {
2340             case 'g':
2341                 meta[j] = &files[j]->metadata;
2342                 break;
2343             case 's':
2344                 METADATA_CHECK_INDEX(map->index, files[j]->nb_streams, "stream")
2345                 meta[j] = &files[j]->streams[map->index]->metadata;
2346                 break;
2347             case 'c':
2348                 METADATA_CHECK_INDEX(map->index, files[j]->nb_chapters, "chapter")
2349                 meta[j] = &files[j]->chapters[map->index]->metadata;
2350                 break;
2351             case 'p':
2352                 METADATA_CHECK_INDEX(map->index, files[j]->nb_programs, "program")
2353                 meta[j] = &files[j]->programs[map->index]->metadata;
2354                 break;
2355             }
2356         }
2357
2358         av_metadata_copy(meta[0], *meta[1], AV_METADATA_DONT_OVERWRITE);
2359     }
2360
2361     /* copy global metadata by default */
2362     if (metadata_global_autocopy) {
2363
2364         for (i = 0; i < nb_output_files; i++)
2365             av_metadata_copy(&output_files[i]->metadata, input_files[0]->metadata,
2366                              AV_METADATA_DONT_OVERWRITE);
2367     }
2368
2369     /* copy chapters according to chapter maps */
2370     for (i = 0; i < nb_chapter_maps; i++) {
2371         int infile  = chapter_maps[i].in_file;
2372         int outfile = chapter_maps[i].out_file;
2373
2374         if (infile < 0 || outfile < 0)
2375             continue;
2376         if (infile >= nb_input_files) {
2377             snprintf(error, sizeof(error), "Invalid input file index %d in chapter mapping.\n", infile);
2378             ret = AVERROR(EINVAL);
2379             goto dump_format;
2380         }
2381         if (outfile >= nb_output_files) {
2382             snprintf(error, sizeof(error), "Invalid output file index %d in chapter mapping.\n",outfile);
2383             ret = AVERROR(EINVAL);
2384             goto dump_format;
2385         }
2386         copy_chapters(infile, outfile);
2387     }
2388
2389     /* copy chapters from the first input file that has them*/
2390     if (!nb_chapter_maps)
2391         for (i = 0; i < nb_input_files; i++) {
2392             if (!input_files[i]->nb_chapters)
2393                 continue;
2394
2395             for (j = 0; j < nb_output_files; j++)
2396                 if ((ret = copy_chapters(i, j)) < 0)
2397                     goto dump_format;
2398             break;
2399         }
2400
2401     /* open files and write file headers */
2402     for(i=0;i<nb_output_files;i++) {
2403         os = output_files[i];
2404         if (av_write_header(os) < 0) {
2405             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2406             ret = AVERROR(EINVAL);
2407             goto dump_format;
2408         }
2409         if (strcmp(output_files[i]->oformat->name, "rtp")) {
2410             want_sdp = 0;
2411         }
2412     }
2413
2414  dump_format:
2415     /* dump the file output parameters - cannot be done before in case
2416        of stream copy */
2417     for(i=0;i<nb_output_files;i++) {
2418         av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2419     }
2420
2421     /* dump the stream mapping */
2422     if (verbose >= 0) {
2423         fprintf(stderr, "Stream mapping:\n");
2424         for(i=0;i<nb_ostreams;i++) {
2425             ost = ost_table[i];
2426             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2427                     ist_table[ost->source_index]->file_index,
2428                     ist_table[ost->source_index]->index,
2429                     ost->file_index,
2430                     ost->index);
2431             if (ost->sync_ist != ist_table[ost->source_index])
2432                 fprintf(stderr, " [sync #%d.%d]",
2433                         ost->sync_ist->file_index,
2434                         ost->sync_ist->index);
2435             fprintf(stderr, "\n");
2436         }
2437     }
2438
2439     if (ret) {
2440         fprintf(stderr, "%s\n", error);
2441         goto fail;
2442     }
2443
2444     if (want_sdp) {
2445         print_sdp(output_files, nb_output_files);
2446     }
2447
2448     if (!using_stdin && verbose >= 0) {
2449 #if HAVE_KBHIT
2450         fprintf(stderr, "Press [q] to stop encoding\n");
2451 #else
2452         fprintf(stderr, "Press ctrl-c to stop encoding\n");
2453 #endif
2454         url_set_interrupt_cb(decode_interrupt_cb);
2455     }
2456     term_init();
2457
2458     timer_start = av_gettime();
2459
2460     for(; received_sigterm == 0;) {
2461         int file_index, ist_index;
2462         AVPacket pkt;
2463         double ipts_min;
2464         double opts_min;
2465
2466     redo:
2467         ipts_min= 1e100;
2468         opts_min= 1e100;
2469         /* if 'q' pressed, exits */
2470         if (!using_stdin) {
2471             if (q_pressed)
2472                 break;
2473             /* read_key() returns 0 on EOF */
2474             key = read_key();
2475             if (key == 'q')
2476                 break;
2477         }
2478
2479         /* select the stream that we must read now by looking at the
2480            smallest output pts */
2481         file_index = -1;
2482         for(i=0;i<nb_ostreams;i++) {
2483             double ipts, opts;
2484             ost = ost_table[i];
2485             os = output_files[ost->file_index];
2486             ist = ist_table[ost->source_index];
2487             if(ist->is_past_recording_time || no_packet[ist->file_index])
2488                 continue;
2489                 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2490             ipts = (double)ist->pts;
2491             if (!file_table[ist->file_index].eof_reached){
2492                 if(ipts < ipts_min) {
2493                     ipts_min = ipts;
2494                     if(input_sync ) file_index = ist->file_index;
2495                 }
2496                 if(opts < opts_min) {
2497                     opts_min = opts;
2498                     if(!input_sync) file_index = ist->file_index;
2499                 }
2500             }
2501             if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
2502                 file_index= -1;
2503                 break;
2504             }
2505         }
2506         /* if none, if is finished */
2507         if (file_index < 0) {
2508             if(no_packet_count){
2509                 no_packet_count=0;
2510                 memset(no_packet, 0, sizeof(no_packet));
2511                 usleep(10000);
2512                 continue;
2513             }
2514             break;
2515         }
2516
2517         /* finish if limit size exhausted */
2518         if (limit_filesize != 0 && limit_filesize <= avio_tell(output_files[0]->pb))
2519             break;
2520
2521         /* read a frame from it and output it in the fifo */
2522         is = input_files[file_index];
2523         ret= av_read_frame(is, &pkt);
2524         if(ret == AVERROR(EAGAIN)){
2525             no_packet[file_index]=1;
2526             no_packet_count++;
2527             continue;
2528         }
2529         if (ret < 0) {
2530             file_table[file_index].eof_reached = 1;
2531             if (opt_shortest)
2532                 break;
2533             else
2534                 continue;
2535         }
2536
2537         no_packet_count=0;
2538         memset(no_packet, 0, sizeof(no_packet));
2539
2540         if (do_pkt_dump) {
2541             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2542                              is->streams[pkt.stream_index]);
2543         }
2544         /* the following test is needed in case new streams appear
2545            dynamically in stream : we ignore them */
2546         if (pkt.stream_index >= file_table[file_index].nb_streams)
2547             goto discard_packet;
2548         ist_index = file_table[file_index].ist_index + pkt.stream_index;
2549         ist = ist_table[ist_index];
2550         if (ist->discard)
2551             goto discard_packet;
2552
2553         if (pkt.dts != AV_NOPTS_VALUE)
2554             pkt.dts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2555         if (pkt.pts != AV_NOPTS_VALUE)
2556             pkt.pts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2557
2558         if (pkt.stream_index < nb_input_files_ts_scale[file_index]
2559             && input_files_ts_scale[file_index][pkt.stream_index]){
2560             if(pkt.pts != AV_NOPTS_VALUE)
2561                 pkt.pts *= input_files_ts_scale[file_index][pkt.stream_index];
2562             if(pkt.dts != AV_NOPTS_VALUE)
2563                 pkt.dts *= input_files_ts_scale[file_index][pkt.stream_index];
2564         }
2565
2566 //        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);
2567         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2568             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2569             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2570             int64_t delta= pkt_dts - ist->next_pts;
2571             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2572                 input_files_ts_offset[ist->file_index]-= delta;
2573                 if (verbose > 2)
2574                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n", delta, input_files_ts_offset[ist->file_index]);
2575                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2576                 if(pkt.pts != AV_NOPTS_VALUE)
2577                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2578             }
2579         }
2580
2581         /* finish if recording time exhausted */
2582         if (recording_time != INT64_MAX &&
2583             av_compare_ts(pkt.pts, ist->st->time_base, recording_time + start_time, (AVRational){1, 1000000}) >= 0) {
2584             ist->is_past_recording_time = 1;
2585             goto discard_packet;
2586         }
2587
2588         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->index, pkt.size);
2589         if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
2590
2591             if (verbose >= 0)
2592                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2593                         ist->file_index, ist->index);
2594             if (exit_on_error)
2595                 ffmpeg_exit(1);
2596             av_free_packet(&pkt);
2597             goto redo;
2598         }
2599
2600     discard_packet:
2601         av_free_packet(&pkt);
2602
2603         /* dump report by using the output first video and audio streams */
2604         print_report(output_files, ost_table, nb_ostreams, 0);
2605     }
2606
2607     /* at the end of stream, we must flush the decoder buffers */
2608     for(i=0;i<nb_istreams;i++) {
2609         ist = ist_table[i];
2610         if (ist->decoding_needed) {
2611             output_packet(ist, i, ost_table, nb_ostreams, NULL);
2612         }
2613     }
2614
2615     term_exit();
2616
2617     /* write the trailer if needed and close file */
2618     for(i=0;i<nb_output_files;i++) {
2619         os = output_files[i];
2620         av_write_trailer(os);
2621     }
2622
2623     /* dump report by using the first video and audio streams */
2624     print_report(output_files, ost_table, nb_ostreams, 1);
2625
2626     /* close each encoder */
2627     for(i=0;i<nb_ostreams;i++) {
2628         ost = ost_table[i];
2629         if (ost->encoding_needed) {
2630             av_freep(&ost->st->codec->stats_in);
2631             avcodec_close(ost->st->codec);
2632         }
2633     }
2634
2635     /* close each decoder */
2636     for(i=0;i<nb_istreams;i++) {
2637         ist = ist_table[i];
2638         if (ist->decoding_needed) {
2639             avcodec_close(ist->st->codec);
2640         }
2641     }
2642 #if CONFIG_AVFILTER
2643     avfilter_graph_free(&graph);
2644 #endif
2645
2646     /* finished ! */
2647     ret = 0;
2648
2649  fail:
2650     av_freep(&bit_buffer);
2651     av_free(file_table);
2652
2653     if (ist_table) {
2654         for(i=0;i<nb_istreams;i++) {
2655             ist = ist_table[i];
2656             av_free(ist);
2657         }
2658         av_free(ist_table);
2659     }
2660     if (ost_table) {
2661         for(i=0;i<nb_ostreams;i++) {
2662             ost = ost_table[i];
2663             if (ost) {
2664                 if (ost->st->stream_copy)
2665                     av_freep(&ost->st->codec->extradata);
2666                 if (ost->logfile) {
2667                     fclose(ost->logfile);
2668                     ost->logfile = NULL;
2669                 }
2670                 av_fifo_free(ost->fifo); /* works even if fifo is not
2671                                              initialized but set to zero */
2672                 av_freep(&ost->st->codec->subtitle_header);
2673                 av_free(ost->pict_tmp.data[0]);
2674                 av_free(ost->forced_kf_pts);
2675                 if (ost->video_resample)
2676                     sws_freeContext(ost->img_resample_ctx);
2677                 if (ost->resample)
2678                     audio_resample_close(ost->resample);
2679                 if (ost->reformat_ctx)
2680                     av_audio_convert_free(ost->reformat_ctx);
2681                 av_free(ost);
2682             }
2683         }
2684         av_free(ost_table);
2685     }
2686     return ret;
2687 }
2688
2689 static void opt_format(const char *arg)
2690 {
2691     last_asked_format = arg;
2692 }
2693
2694 static void opt_video_rc_override_string(const char *arg)
2695 {
2696     video_rc_override_string = arg;
2697 }
2698
2699 static int opt_me_threshold(const char *opt, const char *arg)
2700 {
2701     me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2702     return 0;
2703 }
2704
2705 static int opt_verbose(const char *opt, const char *arg)
2706 {
2707     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2708     return 0;
2709 }
2710
2711 static int opt_frame_rate(const char *opt, const char *arg)
2712 {
2713     if (av_parse_video_rate(&frame_rate, arg) < 0) {
2714         fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2715         ffmpeg_exit(1);
2716     }
2717     return 0;
2718 }
2719
2720 static int opt_bitrate(const char *opt, const char *arg)
2721 {
2722     int codec_type = opt[0]=='a' ? AVMEDIA_TYPE_AUDIO : AVMEDIA_TYPE_VIDEO;
2723
2724     opt_default(opt, arg);
2725
2726     if (av_get_int(avcodec_opts[codec_type], "b", NULL) < 1000)
2727         fprintf(stderr, "WARNING: The bitrate parameter is set too low. It takes bits/s as argument, not kbits/s\n");
2728
2729     return 0;
2730 }
2731
2732 static int opt_frame_crop(const char *opt, const char *arg)
2733 {
2734     fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
2735     return AVERROR(EINVAL);
2736 }
2737
2738 static void opt_frame_size(const char *arg)
2739 {
2740     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2741         fprintf(stderr, "Incorrect frame size\n");
2742         ffmpeg_exit(1);
2743     }
2744 }
2745
2746 static int opt_pad(const char *opt, const char *arg) {
2747     fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2748     return -1;
2749 }
2750
2751 static void opt_frame_pix_fmt(const char *arg)
2752 {
2753     if (strcmp(arg, "list")) {
2754         frame_pix_fmt = av_get_pix_fmt(arg);
2755         if (frame_pix_fmt == PIX_FMT_NONE) {
2756             fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2757             ffmpeg_exit(1);
2758         }
2759     } else {
2760         show_pix_fmts();
2761         ffmpeg_exit(0);
2762     }
2763 }
2764
2765 static void opt_frame_aspect_ratio(const char *arg)
2766 {
2767     int x = 0, y = 0;
2768     double ar = 0;
2769     const char *p;
2770     char *end;
2771
2772     p = strchr(arg, ':');
2773     if (p) {
2774         x = strtol(arg, &end, 10);
2775         if (end == p)
2776             y = strtol(end+1, &end, 10);
2777         if (x > 0 && y > 0)
2778             ar = (double)x / (double)y;
2779     } else
2780         ar = strtod(arg, NULL);
2781
2782     if (!ar) {
2783         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2784         ffmpeg_exit(1);
2785     }
2786     frame_aspect_ratio = ar;
2787 }
2788
2789 static int opt_metadata(const char *opt, const char *arg)
2790 {
2791     char *mid= strchr(arg, '=');
2792
2793     if(!mid){
2794         fprintf(stderr, "Missing =\n");
2795         ffmpeg_exit(1);
2796     }
2797     *mid++= 0;
2798
2799     av_metadata_set2(&metadata, arg, mid, 0);
2800
2801     return 0;
2802 }
2803
2804 static void opt_qscale(const char *arg)
2805 {
2806     video_qscale = atof(arg);
2807     if (video_qscale <= 0 ||
2808         video_qscale > 255) {
2809         fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2810         ffmpeg_exit(1);
2811     }
2812 }
2813
2814 static void opt_top_field_first(const char *arg)
2815 {
2816     top_field_first= atoi(arg);
2817 }
2818
2819 static int opt_thread_count(const char *opt, const char *arg)
2820 {
2821     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2822 #if !HAVE_THREADS
2823     if (verbose >= 0)
2824         fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2825 #endif
2826     return 0;
2827 }
2828
2829 static void opt_audio_sample_fmt(const char *arg)
2830 {
2831     if (strcmp(arg, "list")) {
2832         audio_sample_fmt = av_get_sample_fmt(arg);
2833         if (audio_sample_fmt == AV_SAMPLE_FMT_NONE) {
2834             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg);
2835             ffmpeg_exit(1);
2836         }
2837     } else {
2838         list_fmts(av_get_sample_fmt_string, AV_SAMPLE_FMT_NB);
2839         ffmpeg_exit(0);
2840     }
2841 }
2842
2843 static int opt_audio_rate(const char *opt, const char *arg)
2844 {
2845     audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2846     return 0;
2847 }
2848
2849 static int opt_audio_channels(const char *opt, const char *arg)
2850 {
2851     audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2852     return 0;
2853 }
2854
2855 static void opt_video_channel(const char *arg)
2856 {
2857     video_channel = strtol(arg, NULL, 0);
2858 }
2859
2860 static void opt_video_standard(const char *arg)
2861 {
2862     video_standard = av_strdup(arg);
2863 }
2864
2865 static void opt_codec(int *pstream_copy, char **pcodec_name,
2866                       int codec_type, const char *arg)
2867 {
2868     av_freep(pcodec_name);
2869     if (!strcmp(arg, "copy")) {
2870         *pstream_copy = 1;
2871     } else {
2872         *pcodec_name = av_strdup(arg);
2873     }
2874 }
2875
2876 static void opt_audio_codec(const char *arg)
2877 {
2878     opt_codec(&audio_stream_copy, &audio_codec_name, AVMEDIA_TYPE_AUDIO, arg);
2879 }
2880
2881 static void opt_video_codec(const char *arg)
2882 {
2883     opt_codec(&video_stream_copy, &video_codec_name, AVMEDIA_TYPE_VIDEO, arg);
2884 }
2885
2886 static void opt_subtitle_codec(const char *arg)
2887 {
2888     opt_codec(&subtitle_stream_copy, &subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, arg);
2889 }
2890
2891 static int opt_codec_tag(const char *opt, const char *arg)
2892 {
2893     char *tail;
2894     uint32_t *codec_tag;
2895
2896     codec_tag = !strcmp(opt, "atag") ? &audio_codec_tag :
2897                 !strcmp(opt, "vtag") ? &video_codec_tag :
2898                 !strcmp(opt, "stag") ? &subtitle_codec_tag : NULL;
2899     if (!codec_tag)
2900         return -1;
2901
2902     *codec_tag = strtol(arg, &tail, 0);
2903     if (!tail || *tail)
2904         *codec_tag = AV_RL32(arg);
2905
2906     return 0;
2907 }
2908
2909 static void opt_map(const char *arg)
2910 {
2911     AVStreamMap *m;
2912     char *p;
2913
2914     stream_maps = grow_array(stream_maps, sizeof(*stream_maps), &nb_stream_maps, nb_stream_maps + 1);
2915     m = &stream_maps[nb_stream_maps-1];
2916
2917     m->file_index = strtol(arg, &p, 0);
2918     if (*p)
2919         p++;
2920
2921     m->stream_index = strtol(p, &p, 0);
2922     if (*p) {
2923         p++;
2924         m->sync_file_index = strtol(p, &p, 0);
2925         if (*p)
2926             p++;
2927         m->sync_stream_index = strtol(p, &p, 0);
2928     } else {
2929         m->sync_file_index = m->file_index;
2930         m->sync_stream_index = m->stream_index;
2931     }
2932 }
2933
2934 static void parse_meta_type(char *arg, char *type, int *index, char **endptr)
2935 {
2936     *endptr = arg;
2937     if (*arg == ',') {
2938         *type = *(++arg);
2939         switch (*arg) {
2940         case 'g':
2941             break;
2942         case 's':
2943         case 'c':
2944         case 'p':
2945             *index = strtol(++arg, endptr, 0);
2946             break;
2947         default:
2948             fprintf(stderr, "Invalid metadata type %c.\n", *arg);
2949             ffmpeg_exit(1);
2950         }
2951     } else
2952         *type = 'g';
2953 }
2954
2955 static void opt_map_metadata(const char *arg)
2956 {
2957     AVMetaDataMap *m, *m1;
2958     char *p;
2959
2960     meta_data_maps = grow_array(meta_data_maps, sizeof(*meta_data_maps),
2961                                 &nb_meta_data_maps, nb_meta_data_maps + 1);
2962
2963     m = &meta_data_maps[nb_meta_data_maps - 1][0];
2964     m->file = strtol(arg, &p, 0);
2965     parse_meta_type(p, &m->type, &m->index, &p);
2966     if (*p)
2967         p++;
2968
2969     m1 = &meta_data_maps[nb_meta_data_maps - 1][1];
2970     m1->file = strtol(p, &p, 0);
2971     parse_meta_type(p, &m1->type, &m1->index, &p);
2972
2973     if (m->type == 'g' || m1->type == 'g')
2974         metadata_global_autocopy = 0;
2975     if (m->type == 's' || m1->type == 's')
2976         metadata_streams_autocopy = 0;
2977     if (m->type == 'c' || m1->type == 'c')
2978         metadata_chapters_autocopy = 0;
2979 }
2980
2981 static void opt_map_meta_data(const char *arg)
2982 {
2983     fprintf(stderr, "-map_meta_data is deprecated and will be removed soon. "
2984                     "Use -map_metadata instead.\n");
2985     opt_map_metadata(arg);
2986 }
2987
2988 static void opt_map_chapters(const char *arg)
2989 {
2990     AVChapterMap *c;
2991     char *p;
2992
2993     chapter_maps = grow_array(chapter_maps, sizeof(*chapter_maps), &nb_chapter_maps,
2994                               nb_chapter_maps + 1);
2995     c = &chapter_maps[nb_chapter_maps - 1];
2996     c->out_file = strtol(arg, &p, 0);
2997     if (*p)
2998         p++;
2999
3000     c->in_file = strtol(p, &p, 0);
3001 }
3002
3003 static void opt_input_ts_scale(const char *arg)
3004 {
3005     unsigned int stream;
3006     double scale;
3007     char *p;
3008
3009     stream = strtol(arg, &p, 0);
3010     if (*p)
3011         p++;
3012     scale= strtod(p, &p);
3013
3014     if(stream >= MAX_STREAMS)
3015         ffmpeg_exit(1);
3016
3017     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);
3018     input_files_ts_scale[nb_input_files][stream]= scale;
3019 }
3020
3021 static int opt_recording_time(const char *opt, const char *arg)
3022 {
3023     recording_time = parse_time_or_die(opt, arg, 1);
3024     return 0;
3025 }
3026
3027 static int opt_start_time(const char *opt, const char *arg)
3028 {
3029     start_time = parse_time_or_die(opt, arg, 1);
3030     return 0;
3031 }
3032
3033 static int opt_recording_timestamp(const char *opt, const char *arg)
3034 {
3035     recording_timestamp = parse_time_or_die(opt, arg, 0) / 1000000;
3036     return 0;
3037 }
3038
3039 static int opt_input_ts_offset(const char *opt, const char *arg)
3040 {
3041     input_ts_offset = parse_time_or_die(opt, arg, 1);
3042     return 0;
3043 }
3044
3045 static enum CodecID find_codec_or_die(const char *name, int type, int encoder, int strict)
3046 {
3047     const char *codec_string = encoder ? "encoder" : "decoder";
3048     AVCodec *codec;
3049
3050     if(!name)
3051         return CODEC_ID_NONE;
3052     codec = encoder ?
3053         avcodec_find_encoder_by_name(name) :
3054         avcodec_find_decoder_by_name(name);
3055     if(!codec) {
3056         fprintf(stderr, "Unknown %s '%s'\n", codec_string, name);
3057         ffmpeg_exit(1);
3058     }
3059     if(codec->type != type) {
3060         fprintf(stderr, "Invalid %s type '%s'\n", codec_string, name);
3061         ffmpeg_exit(1);
3062     }
3063     if(codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
3064        strict > FF_COMPLIANCE_EXPERIMENTAL) {
3065         fprintf(stderr, "%s '%s' is experimental and might produce bad "
3066                 "results.\nAdd '-strict experimental' if you want to use it.\n",
3067                 codec_string, codec->name);
3068         codec = encoder ?
3069             avcodec_find_encoder(codec->id) :
3070             avcodec_find_decoder(codec->id);
3071         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
3072             fprintf(stderr, "Or use the non experimental %s '%s'.\n",
3073                     codec_string, codec->name);
3074         ffmpeg_exit(1);
3075     }
3076     return codec->id;
3077 }
3078
3079 static void opt_input_file(const char *filename)
3080 {
3081     AVFormatContext *ic;
3082     AVFormatParameters params, *ap = &params;
3083     AVInputFormat *file_iformat = NULL;
3084     int err, i, ret, rfps, rfps_base;
3085     int64_t timestamp;
3086
3087     if (last_asked_format) {
3088         if (!(file_iformat = av_find_input_format(last_asked_format))) {
3089             fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
3090             ffmpeg_exit(1);
3091         }
3092         last_asked_format = NULL;
3093     }
3094
3095     if (!strcmp(filename, "-"))
3096         filename = "pipe:";
3097
3098     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3099                     !strcmp(filename, "/dev/stdin");
3100
3101     /* get default parameters from command line */
3102     ic = avformat_alloc_context();
3103     if (!ic) {
3104         print_error(filename, AVERROR(ENOMEM));
3105         ffmpeg_exit(1);
3106     }
3107
3108     memset(ap, 0, sizeof(*ap));
3109     ap->prealloced_context = 1;
3110     ap->sample_rate = audio_sample_rate;
3111     ap->channels = audio_channels;
3112     ap->time_base.den = frame_rate.num;
3113     ap->time_base.num = frame_rate.den;
3114     ap->width = frame_width;
3115     ap->height = frame_height;
3116     ap->pix_fmt = frame_pix_fmt;
3117    // ap->sample_fmt = audio_sample_fmt; //FIXME:not implemented in libavformat
3118     ap->channel = video_channel;
3119     ap->standard = video_standard;
3120
3121     set_context_opts(ic, avformat_opts, AV_OPT_FLAG_DECODING_PARAM, NULL);
3122
3123     ic->video_codec_id   =
3124         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0,
3125                           avcodec_opts[AVMEDIA_TYPE_VIDEO   ]->strict_std_compliance);
3126     ic->audio_codec_id   =
3127         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0,
3128                           avcodec_opts[AVMEDIA_TYPE_AUDIO   ]->strict_std_compliance);
3129     ic->subtitle_codec_id=
3130         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0,
3131                           avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->strict_std_compliance);
3132     ic->flags |= AVFMT_FLAG_NONBLOCK;
3133
3134     /* open the input file with generic libav function */
3135     err = av_open_input_file(&ic, filename, file_iformat, 0, ap);
3136     if (err < 0) {
3137         print_error(filename, err);
3138         ffmpeg_exit(1);
3139     }
3140     if(opt_programid) {
3141         int i, j;
3142         int found=0;
3143         for(i=0; i<ic->nb_streams; i++){
3144             ic->streams[i]->discard= AVDISCARD_ALL;
3145         }
3146         for(i=0; i<ic->nb_programs; i++){
3147             AVProgram *p= ic->programs[i];
3148             if(p->id != opt_programid){
3149                 p->discard = AVDISCARD_ALL;
3150             }else{
3151                 found=1;
3152                 for(j=0; j<p->nb_stream_indexes; j++){
3153                     ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
3154                 }
3155             }
3156         }
3157         if(!found){
3158             fprintf(stderr, "Specified program id not found\n");
3159             ffmpeg_exit(1);
3160         }
3161         opt_programid=0;
3162     }
3163
3164     ic->loop_input = loop_input;
3165
3166     /* If not enough info to get the stream parameters, we decode the
3167        first frames to get it. (used in mpeg case for example) */
3168     ret = av_find_stream_info(ic);
3169     if (ret < 0 && verbose >= 0) {
3170         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3171         av_close_input_file(ic);
3172         ffmpeg_exit(1);
3173     }
3174
3175     timestamp = start_time;
3176     /* add the stream start time */
3177     if (ic->start_time != AV_NOPTS_VALUE)
3178         timestamp += ic->start_time;
3179
3180     /* if seeking requested, we execute it */
3181     if (start_time != 0) {
3182         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3183         if (ret < 0) {
3184             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3185                     filename, (double)timestamp / AV_TIME_BASE);
3186         }
3187         /* reset seek info */
3188         start_time = 0;
3189     }
3190
3191     /* update the current parameters so that they match the one of the input stream */
3192     for(i=0;i<ic->nb_streams;i++) {
3193         AVStream *st = ic->streams[i];
3194         AVCodecContext *dec = st->codec;
3195         dec->thread_count = thread_count;
3196         input_codecs = grow_array(input_codecs, sizeof(*input_codecs), &nb_input_codecs, nb_input_codecs + 1);
3197         switch (dec->codec_type) {
3198         case AVMEDIA_TYPE_AUDIO:
3199             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(audio_codec_name);
3200             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]);
3201             //fprintf(stderr, "\nInput Audio channels: %d", dec->channels);
3202             channel_layout    = dec->channel_layout;
3203             audio_channels    = dec->channels;
3204             audio_sample_rate = dec->sample_rate;
3205             audio_sample_fmt  = dec->sample_fmt;
3206             if(audio_disable)
3207                 st->discard= AVDISCARD_ALL;
3208             /* Note that av_find_stream_info can add more streams, and we
3209              * currently have no chance of setting up lowres decoding
3210              * early enough for them. */
3211             if (dec->lowres)
3212                 audio_sample_rate >>= dec->lowres;
3213             break;
3214         case AVMEDIA_TYPE_VIDEO:
3215             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(video_codec_name);
3216             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]);
3217             frame_height = dec->height;
3218             frame_width  = dec->width;
3219             if(ic->streams[i]->sample_aspect_ratio.num)
3220                 frame_aspect_ratio=av_q2d(ic->streams[i]->sample_aspect_ratio);
3221             else
3222                 frame_aspect_ratio=av_q2d(dec->sample_aspect_ratio);
3223             frame_aspect_ratio *= (float) dec->width / dec->height;
3224             frame_pix_fmt = dec->pix_fmt;
3225             rfps      = ic->streams[i]->r_frame_rate.num;
3226             rfps_base = ic->streams[i]->r_frame_rate.den;
3227             if (dec->lowres) {
3228                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3229                 frame_height >>= dec->lowres;
3230                 frame_width  >>= dec->lowres;
3231                 dec->height = frame_height;
3232                 dec->width  = frame_width;
3233             }
3234             if(me_threshold)
3235                 dec->debug |= FF_DEBUG_MV;
3236
3237             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3238
3239                 if (verbose >= 0)
3240                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3241                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3242
3243                     (float)rfps / rfps_base, rfps, rfps_base);
3244             }
3245             /* update the current frame rate to match the stream frame rate */
3246             frame_rate.num = rfps;
3247             frame_rate.den = rfps_base;
3248
3249             if(video_disable)
3250                 st->discard= AVDISCARD_ALL;
3251             else if(video_discard)
3252                 st->discard= video_discard;
3253             break;
3254         case AVMEDIA_TYPE_DATA:
3255             break;
3256         case AVMEDIA_TYPE_SUBTITLE:
3257             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(subtitle_codec_name);
3258             if(subtitle_disable)
3259                 st->discard = AVDISCARD_ALL;
3260             break;
3261         case AVMEDIA_TYPE_ATTACHMENT:
3262         case AVMEDIA_TYPE_UNKNOWN:
3263             break;
3264         default:
3265             abort();
3266         }
3267     }
3268
3269     input_files[nb_input_files] = ic;
3270     input_files_ts_offset[nb_input_files] = input_ts_offset - (copy_ts ? 0 : timestamp);
3271     /* dump the file content */
3272     if (verbose >= 0)
3273         av_dump_format(ic, nb_input_files, filename, 0);
3274
3275     nb_input_files++;
3276
3277     video_channel = 0;
3278
3279     av_freep(&video_codec_name);
3280     av_freep(&audio_codec_name);
3281     av_freep(&subtitle_codec_name);
3282 }
3283
3284 static void check_audio_video_sub_inputs(int *has_video_ptr, int *has_audio_ptr,
3285                                          int *has_subtitle_ptr)
3286 {
3287     int has_video, has_audio, has_subtitle, i, j;
3288     AVFormatContext *ic;
3289
3290     has_video = 0;
3291     has_audio = 0;
3292     has_subtitle = 0;
3293     for(j=0;j<nb_input_files;j++) {
3294         ic = input_files[j];
3295         for(i=0;i<ic->nb_streams;i++) {
3296             AVCodecContext *enc = ic->streams[i]->codec;
3297             switch(enc->codec_type) {
3298             case AVMEDIA_TYPE_AUDIO:
3299                 has_audio = 1;
3300                 break;
3301             case AVMEDIA_TYPE_VIDEO:
3302                 has_video = 1;
3303                 break;
3304             case AVMEDIA_TYPE_SUBTITLE:
3305                 has_subtitle = 1;
3306                 break;
3307             case AVMEDIA_TYPE_DATA:
3308             case AVMEDIA_TYPE_ATTACHMENT:
3309             case AVMEDIA_TYPE_UNKNOWN:
3310                 break;
3311             default:
3312                 abort();
3313             }
3314         }
3315     }
3316     *has_video_ptr = has_video;
3317     *has_audio_ptr = has_audio;
3318     *has_subtitle_ptr = has_subtitle;
3319 }
3320
3321 static void new_video_stream(AVFormatContext *oc, int file_idx)
3322 {
3323     AVStream *st;
3324     AVOutputStream *ost;
3325     AVCodecContext *video_enc;
3326     enum CodecID codec_id = CODEC_ID_NONE;
3327     AVCodec *codec= NULL;
3328
3329     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3330     if (!st) {
3331         fprintf(stderr, "Could not alloc stream\n");
3332         ffmpeg_exit(1);
3333     }
3334     ost = new_output_stream(oc, file_idx);
3335
3336     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3337     if(!video_stream_copy){
3338         if (video_codec_name) {
3339             codec_id = find_codec_or_die(video_codec_name, AVMEDIA_TYPE_VIDEO, 1,
3340                                          avcodec_opts[AVMEDIA_TYPE_VIDEO]->strict_std_compliance);
3341             codec = avcodec_find_encoder_by_name(video_codec_name);
3342             output_codecs[nb_output_codecs-1] = codec;
3343         } else {
3344             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_VIDEO);
3345             codec = avcodec_find_encoder(codec_id);
3346         }
3347     }
3348
3349     avcodec_get_context_defaults3(st->codec, codec);
3350     ost->bitstream_filters = video_bitstream_filters;
3351     video_bitstream_filters= NULL;
3352
3353     st->codec->thread_count= thread_count;
3354
3355     video_enc = st->codec;
3356
3357     if(video_codec_tag)
3358         video_enc->codec_tag= video_codec_tag;
3359
3360     if(   (video_global_header&1)
3361        || (video_global_header==0 && (oc->oformat->flags & AVFMT_GLOBALHEADER))){
3362         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3363         avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3364     }
3365     if(video_global_header&2){
3366         video_enc->flags2 |= CODEC_FLAG2_LOCAL_HEADER;
3367         avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags2|= CODEC_FLAG2_LOCAL_HEADER;
3368     }
3369
3370     if (video_stream_copy) {
3371         st->stream_copy = 1;
3372         video_enc->codec_type = AVMEDIA_TYPE_VIDEO;
3373         video_enc->sample_aspect_ratio =
3374         st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3375     } else {
3376         const char *p;
3377         int i;
3378         AVRational fps= frame_rate.num ? frame_rate : (AVRational){25,1};
3379
3380         video_enc->codec_id = codec_id;
3381         set_context_opts(video_enc, avcodec_opts[AVMEDIA_TYPE_VIDEO], AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3382
3383         if (codec && codec->supported_framerates && !force_fps)
3384             fps = codec->supported_framerates[av_find_nearest_q_idx(fps, codec->supported_framerates)];
3385         video_enc->time_base.den = fps.num;
3386         video_enc->time_base.num = fps.den;
3387
3388         video_enc->width = frame_width;
3389         video_enc->height = frame_height;
3390         video_enc->sample_aspect_ratio = av_d2q(frame_aspect_ratio*video_enc->height/video_enc->width, 255);
3391         video_enc->pix_fmt = frame_pix_fmt;
3392         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3393
3394         choose_pixel_fmt(st, codec);
3395
3396         if (intra_only)
3397             video_enc->gop_size = 0;
3398         if (video_qscale || same_quality) {
3399             video_enc->flags |= CODEC_FLAG_QSCALE;
3400             video_enc->global_quality=
3401                 st->quality = FF_QP2LAMBDA * video_qscale;
3402         }
3403
3404         if(intra_matrix)
3405             video_enc->intra_matrix = intra_matrix;
3406         if(inter_matrix)
3407             video_enc->inter_matrix = inter_matrix;
3408
3409         p= video_rc_override_string;
3410         for(i=0; p; i++){
3411             int start, end, q;
3412             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3413             if(e!=3){
3414                 fprintf(stderr, "error parsing rc_override\n");
3415                 ffmpeg_exit(1);
3416             }
3417             video_enc->rc_override=
3418                 av_realloc(video_enc->rc_override,
3419                            sizeof(RcOverride)*(i+1));
3420             video_enc->rc_override[i].start_frame= start;
3421             video_enc->rc_override[i].end_frame  = end;
3422             if(q>0){
3423                 video_enc->rc_override[i].qscale= q;
3424                 video_enc->rc_override[i].quality_factor= 1.0;
3425             }
3426             else{
3427                 video_enc->rc_override[i].qscale= 0;
3428                 video_enc->rc_override[i].quality_factor= -q/100.0;
3429             }
3430             p= strchr(p, '/');
3431             if(p) p++;
3432         }
3433         video_enc->rc_override_count=i;
3434         if (!video_enc->rc_initial_buffer_occupancy)
3435             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3436         video_enc->me_threshold= me_threshold;
3437         video_enc->intra_dc_precision= intra_dc_precision - 8;
3438
3439         if (do_psnr)
3440             video_enc->flags|= CODEC_FLAG_PSNR;
3441
3442         /* two pass mode */
3443         if (do_pass) {
3444             if (do_pass == 1) {
3445                 video_enc->flags |= CODEC_FLAG_PASS1;
3446             } else {
3447                 video_enc->flags |= CODEC_FLAG_PASS2;
3448             }
3449         }
3450
3451         if (forced_key_frames)
3452             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3453     }
3454     if (video_language) {
3455         av_metadata_set2(&st->metadata, "language", video_language, 0);
3456         av_freep(&video_language);
3457     }
3458
3459     /* reset some key parameters */
3460     video_disable = 0;
3461     av_freep(&video_codec_name);
3462     av_freep(&forced_key_frames);
3463     video_stream_copy = 0;
3464     frame_pix_fmt = PIX_FMT_NONE;
3465 }
3466
3467 static void new_audio_stream(AVFormatContext *oc, int file_idx)
3468 {
3469     AVStream *st;
3470     AVOutputStream *ost;
3471     AVCodec *codec= NULL;
3472     AVCodecContext *audio_enc;
3473     enum CodecID codec_id = CODEC_ID_NONE;
3474
3475     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3476     if (!st) {
3477         fprintf(stderr, "Could not alloc stream\n");
3478         ffmpeg_exit(1);
3479     }
3480     ost = new_output_stream(oc, file_idx);
3481
3482     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3483     if(!audio_stream_copy){
3484         if (audio_codec_name) {
3485             codec_id = find_codec_or_die(audio_codec_name, AVMEDIA_TYPE_AUDIO, 1,
3486                                          avcodec_opts[AVMEDIA_TYPE_AUDIO]->strict_std_compliance);
3487             codec = avcodec_find_encoder_by_name(audio_codec_name);
3488             output_codecs[nb_output_codecs-1] = codec;
3489         } else {
3490             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_AUDIO);
3491             codec = avcodec_find_encoder(codec_id);
3492         }
3493     }
3494
3495     avcodec_get_context_defaults3(st->codec, codec);
3496
3497     ost->bitstream_filters = audio_bitstream_filters;
3498     audio_bitstream_filters= NULL;
3499
3500     st->codec->thread_count= thread_count;
3501
3502     audio_enc = st->codec;
3503     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3504
3505     if(audio_codec_tag)
3506         audio_enc->codec_tag= audio_codec_tag;
3507
3508     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3509         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3510         avcodec_opts[AVMEDIA_TYPE_AUDIO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3511     }
3512     if (audio_stream_copy) {
3513         st->stream_copy = 1;
3514         audio_enc->channels = audio_channels;
3515         audio_enc->sample_rate = audio_sample_rate;
3516     } else {
3517         audio_enc->codec_id = codec_id;
3518         set_context_opts(audio_enc, avcodec_opts[AVMEDIA_TYPE_AUDIO], AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3519
3520         if (audio_qscale > QSCALE_NONE) {
3521             audio_enc->flags |= CODEC_FLAG_QSCALE;
3522             audio_enc->global_quality = st->quality = FF_QP2LAMBDA * audio_qscale;
3523         }
3524         audio_enc->channels = audio_channels;
3525         audio_enc->sample_fmt = audio_sample_fmt;
3526         audio_enc->sample_rate = audio_sample_rate;
3527         audio_enc->channel_layout = channel_layout;
3528         if (av_get_channel_layout_nb_channels(channel_layout) != audio_channels)
3529             audio_enc->channel_layout = 0;
3530         choose_sample_fmt(st, codec);
3531         choose_sample_rate(st, codec);
3532     }
3533     audio_enc->time_base= (AVRational){1, audio_sample_rate};
3534     if (audio_language) {
3535         av_metadata_set2(&st->metadata, "language", audio_language, 0);
3536         av_freep(&audio_language);
3537     }
3538
3539     /* reset some key parameters */
3540     audio_disable = 0;
3541     av_freep(&audio_codec_name);
3542     audio_stream_copy = 0;
3543 }
3544
3545 static void new_subtitle_stream(AVFormatContext *oc, int file_idx)
3546 {
3547     AVStream *st;
3548     AVOutputStream *ost;
3549     AVCodec *codec=NULL;
3550     AVCodecContext *subtitle_enc;
3551     enum CodecID codec_id = CODEC_ID_NONE;
3552
3553     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3554     if (!st) {
3555         fprintf(stderr, "Could not alloc stream\n");
3556         ffmpeg_exit(1);
3557     }
3558     ost = new_output_stream(oc, file_idx);
3559     subtitle_enc = st->codec;
3560     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3561     if(!subtitle_stream_copy){
3562         if (subtitle_codec_name) {
3563             codec_id = find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 1,
3564                                          avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->strict_std_compliance);
3565             codec= output_codecs[nb_output_codecs-1] = avcodec_find_encoder_by_name(subtitle_codec_name);
3566         } else {
3567             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_SUBTITLE);
3568             codec = avcodec_find_encoder(codec_id);
3569         }
3570     }
3571     avcodec_get_context_defaults3(st->codec, codec);
3572
3573     ost->bitstream_filters = subtitle_bitstream_filters;
3574     subtitle_bitstream_filters= NULL;
3575
3576     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3577
3578     if(subtitle_codec_tag)
3579         subtitle_enc->codec_tag= subtitle_codec_tag;
3580
3581     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3582         subtitle_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3583         avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->flags |= CODEC_FLAG_GLOBAL_HEADER;
3584     }
3585     if (subtitle_stream_copy) {
3586         st->stream_copy = 1;
3587     } else {
3588         subtitle_enc->codec_id = codec_id;
3589         set_context_opts(avcodec_opts[AVMEDIA_TYPE_SUBTITLE], subtitle_enc, AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3590     }
3591
3592     if (subtitle_language) {
3593         av_metadata_set2(&st->metadata, "language", subtitle_language, 0);
3594         av_freep(&subtitle_language);
3595     }
3596
3597     subtitle_disable = 0;
3598     av_freep(&subtitle_codec_name);
3599     subtitle_stream_copy = 0;
3600 }
3601
3602 static int opt_new_stream(const char *opt, const char *arg)
3603 {
3604     AVFormatContext *oc;
3605     int file_idx = nb_output_files - 1;
3606     if (nb_output_files <= 0) {
3607         fprintf(stderr, "At least one output file must be specified\n");
3608         ffmpeg_exit(1);
3609     }
3610     oc = output_files[file_idx];
3611
3612     if      (!strcmp(opt, "newvideo"   )) new_video_stream   (oc, file_idx);
3613     else if (!strcmp(opt, "newaudio"   )) new_audio_stream   (oc, file_idx);
3614     else if (!strcmp(opt, "newsubtitle")) new_subtitle_stream(oc, file_idx);
3615     else av_assert0(0);
3616     return 0;
3617 }
3618
3619 /* arg format is "output-stream-index:streamid-value". */
3620 static int opt_streamid(const char *opt, const char *arg)
3621 {
3622     int idx;
3623     char *p;
3624     char idx_str[16];
3625
3626     strncpy(idx_str, arg, sizeof(idx_str));
3627     idx_str[sizeof(idx_str)-1] = '\0';
3628     p = strchr(idx_str, ':');
3629     if (!p) {
3630         fprintf(stderr,
3631                 "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3632                 arg, opt);
3633         ffmpeg_exit(1);
3634     }
3635     *p++ = '\0';
3636     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, MAX_STREAMS-1);
3637     streamid_map = grow_array(streamid_map, sizeof(*streamid_map), &nb_streamid_map, idx+1);
3638     streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3639     return 0;
3640 }
3641
3642 static void opt_output_file(const char *filename)
3643 {
3644     AVFormatContext *oc;
3645     int err, use_video, use_audio, use_subtitle;
3646     int input_has_video, input_has_audio, input_has_subtitle;
3647     AVFormatParameters params, *ap = &params;
3648     AVOutputFormat *file_oformat;
3649
3650     if (!strcmp(filename, "-"))
3651         filename = "pipe:";
3652
3653     oc = avformat_alloc_context();
3654     if (!oc) {
3655         print_error(filename, AVERROR(ENOMEM));
3656         ffmpeg_exit(1);
3657     }
3658
3659     if (last_asked_format) {
3660         file_oformat = av_guess_format(last_asked_format, NULL, NULL);
3661         if (!file_oformat) {
3662             fprintf(stderr, "Requested output format '%s' is not a suitable output format\n", last_asked_format);
3663             ffmpeg_exit(1);
3664         }
3665         last_asked_format = NULL;
3666     } else {