s302m: fix resampling for 16 and 24bits.
[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 #include "config.h"
23 #include <ctype.h>
24 #include <string.h>
25 #include <math.h>
26 #include <stdlib.h>
27 #include <errno.h>
28 #include <signal.h>
29 #include <limits.h>
30 #include <unistd.h>
31 #include "libavformat/avformat.h"
32 #include "libavdevice/avdevice.h"
33 #include "libswscale/swscale.h"
34 #include "libavutil/opt.h"
35 #include "libavcodec/audioconvert.h"
36 #include "libavutil/audioconvert.h"
37 #include "libavutil/parseutils.h"
38 #include "libavutil/samplefmt.h"
39 #include "libavutil/colorspace.h"
40 #include "libavutil/fifo.h"
41 #include "libavutil/intreadwrite.h"
42 #include "libavutil/pixdesc.h"
43 #include "libavutil/avstring.h"
44 #include "libavutil/libm.h"
45 #include "libavformat/os_support.h"
46
47 #if CONFIG_AVFILTER
48 # include "libavfilter/avfilter.h"
49 # include "libavfilter/avfiltergraph.h"
50 # include "libavfilter/vsrc_buffer.h"
51 #endif
52
53 #if HAVE_SYS_RESOURCE_H
54 #include <sys/types.h>
55 #include <sys/time.h>
56 #include <sys/resource.h>
57 #elif HAVE_GETPROCESSTIMES
58 #include <windows.h>
59 #endif
60 #if HAVE_GETPROCESSMEMORYINFO
61 #include <windows.h>
62 #include <psapi.h>
63 #endif
64
65 #if HAVE_SYS_SELECT_H
66 #include <sys/select.h>
67 #endif
68
69 #include <time.h>
70
71 #include "cmdutils.h"
72
73 #include "libavutil/avassert.h"
74
75 const char program_name[] = "ffmpeg";
76 const int program_birth_year = 2000;
77
78 /* select an input stream for an output stream */
79 typedef struct AVStreamMap {
80     int file_index;
81     int stream_index;
82     int sync_file_index;
83     int sync_stream_index;
84 } AVStreamMap;
85
86 /**
87  * select an input file for an output file
88  */
89 typedef struct AVMetaDataMap {
90     int  file;      //< file index
91     char type;      //< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
92     int  index;     //< stream/chapter/program number
93 } AVMetaDataMap;
94
95 typedef struct AVChapterMap {
96     int in_file;
97     int out_file;
98 } AVChapterMap;
99
100 static const OptionDef options[];
101
102 #define MAX_FILES 100
103 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
104
105 #define FFM_PACKET_SIZE 4096 //XXX a duplicate of the line in ffm.h
106
107 static const char *last_asked_format = NULL;
108 static int64_t input_files_ts_offset[MAX_FILES];
109 static double *input_files_ts_scale[MAX_FILES] = {NULL};
110 static AVCodec **input_codecs = NULL;
111 static int nb_input_codecs = 0;
112 static int nb_input_files_ts_scale[MAX_FILES] = {0};
113
114 static AVFormatContext *output_files[MAX_FILES];
115 static AVCodec **output_codecs = NULL;
116 static int nb_output_files = 0;
117 static int nb_output_codecs = 0;
118
119 static AVStreamMap *stream_maps = NULL;
120 static int nb_stream_maps;
121
122 /* first item specifies output metadata, second is input */
123 static AVMetaDataMap (*meta_data_maps)[2] = NULL;
124 static int nb_meta_data_maps;
125 static int metadata_global_autocopy   = 1;
126 static int metadata_streams_autocopy  = 1;
127 static int metadata_chapters_autocopy = 1;
128
129 static AVChapterMap *chapter_maps = NULL;
130 static int nb_chapter_maps;
131
132 /* indexed by output file stream index */
133 static int *streamid_map = NULL;
134 static int nb_streamid_map = 0;
135
136 static int frame_width  = 0;
137 static int frame_height = 0;
138 static float frame_aspect_ratio = 0;
139 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
140 static enum AVSampleFormat audio_sample_fmt = AV_SAMPLE_FMT_NONE;
141 static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
142 static AVRational frame_rate;
143 static float video_qscale = 0;
144 static uint16_t *intra_matrix = NULL;
145 static uint16_t *inter_matrix = NULL;
146 static const char *video_rc_override_string=NULL;
147 static int video_disable = 0;
148 static int video_discard = 0;
149 static char *video_codec_name = NULL;
150 static unsigned int video_codec_tag = 0;
151 static char *video_language = NULL;
152 static int same_quality = 0;
153 static int do_deinterlace = 0;
154 static int top_field_first = -1;
155 static int me_threshold = 0;
156 static int intra_dc_precision = 8;
157 static int loop_input = 0;
158 static int loop_output = AVFMT_NOOUTPUTLOOP;
159 static int qp_hist = 0;
160 #if CONFIG_AVFILTER
161 static char *vfilters = NULL;
162 #endif
163
164 static int intra_only = 0;
165 static int audio_sample_rate = 44100;
166 static int64_t channel_layout = 0;
167 #define QSCALE_NONE -99999
168 static float audio_qscale = QSCALE_NONE;
169 static int audio_disable = 0;
170 static int audio_channels = 1;
171 static char  *audio_codec_name = NULL;
172 static unsigned int audio_codec_tag = 0;
173 static char *audio_language = NULL;
174
175 static int subtitle_disable = 0;
176 static char *subtitle_codec_name = NULL;
177 static char *subtitle_language = NULL;
178 static unsigned int subtitle_codec_tag = 0;
179
180 static int data_disable = 0;
181 static char *data_codec_name = NULL;
182 static unsigned int data_codec_tag = 0;
183
184 static float mux_preload= 0.5;
185 static float mux_max_delay= 0.7;
186
187 static int64_t recording_time = INT64_MAX;
188 static int64_t start_time = 0;
189 static int64_t recording_timestamp = 0;
190 static int64_t input_ts_offset = 0;
191 static int file_overwrite = 0;
192 static AVMetadata *metadata;
193 static int do_benchmark = 0;
194 static int do_hex_dump = 0;
195 static int do_pkt_dump = 0;
196 static int do_psnr = 0;
197 static int do_pass = 0;
198 static char *pass_logfilename_prefix = NULL;
199 static int audio_stream_copy = 0;
200 static int video_stream_copy = 0;
201 static int subtitle_stream_copy = 0;
202 static int data_stream_copy = 0;
203 static int video_sync_method= -1;
204 static int audio_sync_method= 0;
205 static float audio_drift_threshold= 0.1;
206 static int copy_ts= 0;
207 static int copy_tb;
208 static int opt_shortest = 0;
209 static char *vstats_filename;
210 static FILE *vstats_file;
211 static int opt_programid = 0;
212 static int copy_initial_nonkeyframes = 0;
213
214 static int rate_emu = 0;
215
216 static int  video_channel = 0;
217 static char *video_standard;
218
219 static int audio_volume = 256;
220
221 static int exit_on_error = 0;
222 static int using_stdin = 0;
223 static int verbose = 1;
224 static int thread_count= 1;
225 static int64_t video_size = 0;
226 static int64_t audio_size = 0;
227 static int64_t extra_size = 0;
228 static int nb_frames_dup = 0;
229 static int nb_frames_drop = 0;
230 static int input_sync;
231 static uint64_t limit_filesize = 0;
232 static int force_fps = 0;
233 static char *forced_key_frames = NULL;
234
235 static float dts_delta_threshold = 10;
236
237 static int64_t timer_start;
238
239 static uint8_t *audio_buf;
240 static uint8_t *audio_out;
241 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
242
243 static short *samples;
244
245 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
246 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
247 static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL;
248
249 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
250
251 struct AVInputStream;
252
253 typedef struct AVOutputStream {
254     int file_index;          /* file index */
255     int index;               /* stream index in the output file */
256     int source_index;        /* AVInputStream index */
257     AVStream *st;            /* stream in the output file */
258     int encoding_needed;     /* true if encoding needed for this stream */
259     int frame_number;
260     /* input pts and corresponding output pts
261        for A/V sync */
262     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
263     struct AVInputStream *sync_ist; /* input stream to sync against */
264     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
265     AVBitStreamFilterContext *bitstream_filters;
266     /* video only */
267     int video_resample;
268     AVFrame pict_tmp;      /* temporary image for resampling */
269     struct SwsContext *img_resample_ctx; /* for image resampling */
270     int resample_height;
271     int resample_width;
272     int resample_pix_fmt;
273
274     float frame_aspect_ratio;
275
276     /* forced key frames */
277     int64_t *forced_kf_pts;
278     int forced_kf_count;
279     int forced_kf_index;
280
281     /* audio only */
282     int audio_resample;
283     ReSampleContext *resample; /* for audio resampling */
284     int resample_sample_fmt;
285     int resample_channels;
286     int resample_sample_rate;
287     int reformat_pair;
288     AVAudioConvert *reformat_ctx;
289     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
290     FILE *logfile;
291
292 #if CONFIG_AVFILTER
293     AVFilterContext *output_video_filter;
294     AVFilterContext *input_video_filter;
295     AVFilterBufferRef *picref;
296     char *avfilter;
297     AVFilterGraph *graph;
298 #endif
299
300    int sws_flags;
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     AVStream *st;
309     int discard;             /* true if stream data should be discarded */
310     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
311     int64_t sample_index;      /* current sample */
312
313     int64_t       start;     /* time when read started */
314     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
315                                 is not defined */
316     int64_t       pts;       /* current pts */
317     PtsCorrectionContext pts_ctx;
318     int is_start;            /* is 1 at the start and after a discontinuity */
319     int showed_multi_packet_warning;
320     int is_past_recording_time;
321 #if CONFIG_AVFILTER
322     AVFrame *filter_frame;
323     int has_filter_frame;
324 #endif
325 } AVInputStream;
326
327 typedef struct AVInputFile {
328     AVFormatContext *ctx;
329     int eof_reached;      /* true if eof reached */
330     int ist_index;        /* index of first stream in ist_table */
331     int buffer_size;      /* current total buffer size */
332 } AVInputFile;
333
334 static AVInputStream *input_streams = NULL;
335 static int         nb_input_streams = 0;
336 static AVInputFile   *input_files   = NULL;
337 static int         nb_input_files   = 0;
338
339 #if CONFIG_AVFILTER
340
341 static int configure_video_filters(AVInputStream *ist, AVOutputStream *ost)
342 {
343     AVFilterContext *last_filter, *filter;
344     /** filter graph containing all filters including input & output */
345     AVCodecContext *codec = ost->st->codec;
346     AVCodecContext *icodec = ist->st->codec;
347     FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
348     AVRational sample_aspect_ratio;
349     char args[255];
350     int ret;
351
352     ost->graph = avfilter_graph_alloc();
353
354     if (ist->st->sample_aspect_ratio.num){
355         sample_aspect_ratio = ist->st->sample_aspect_ratio;
356     }else
357         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
358
359     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
360              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
361              sample_aspect_ratio.num, sample_aspect_ratio.den);
362
363     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
364                                        "src", args, NULL, ost->graph);
365     if (ret < 0)
366         return ret;
367     ret = avfilter_graph_create_filter(&ost->output_video_filter, &ffsink,
368                                        "out", NULL, &ffsink_ctx, ost->graph);
369     if (ret < 0)
370         return ret;
371     last_filter = ost->input_video_filter;
372
373     if (codec->width  != icodec->width || codec->height != icodec->height) {
374         snprintf(args, 255, "%d:%d:flags=0x%X",
375                  codec->width,
376                  codec->height,
377                  ost->sws_flags);
378         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
379                                                 NULL, args, NULL, ost->graph)) < 0)
380             return ret;
381         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
382             return ret;
383         last_filter = filter;
384     }
385
386     snprintf(args, sizeof(args), "flags=0x%X", ost->sws_flags);
387     ost->graph->scale_sws_opts = av_strdup(args);
388
389     if (ost->avfilter) {
390         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
391         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
392
393         outputs->name    = av_strdup("in");
394         outputs->filter_ctx = last_filter;
395         outputs->pad_idx = 0;
396         outputs->next    = NULL;
397
398         inputs->name    = av_strdup("out");
399         inputs->filter_ctx = ost->output_video_filter;
400         inputs->pad_idx = 0;
401         inputs->next    = NULL;
402
403         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, inputs, outputs, NULL)) < 0)
404             return ret;
405         av_freep(&ost->avfilter);
406     } else {
407         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
408             return ret;
409     }
410
411     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
412         return ret;
413
414     codec->width  = ost->output_video_filter->inputs[0]->w;
415     codec->height = ost->output_video_filter->inputs[0]->h;
416     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
417         ost->frame_aspect_ratio ? // overriden by the -aspect cli option
418         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
419         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
420
421     return 0;
422 }
423 #endif /* CONFIG_AVFILTER */
424
425 static void term_exit(void)
426 {
427     av_log(NULL, AV_LOG_QUIET, "");
428 }
429
430 static volatile int received_sigterm = 0;
431 static volatile int received_nb_signals = 0;
432
433 static void
434 sigterm_handler(int sig)
435 {
436     received_sigterm = sig;
437     received_nb_signals++;
438     term_exit();
439 }
440
441 static void term_init(void)
442 {
443     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
444     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
445 #ifdef SIGXCPU
446     signal(SIGXCPU, sigterm_handler);
447 #endif
448 }
449
450 static int decode_interrupt_cb(void)
451 {
452     return received_nb_signals > 1;
453 }
454
455 static int ffmpeg_exit(int ret)
456 {
457     int i;
458
459     /* close files */
460     for(i=0;i<nb_output_files;i++) {
461         AVFormatContext *s = output_files[i];
462         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
463             avio_close(s->pb);
464         avformat_free_context(s);
465         av_free(output_streams_for_file[i]);
466     }
467     for(i=0;i<nb_input_files;i++) {
468         av_close_input_file(input_files[i].ctx);
469         av_free(input_files_ts_scale[i]);
470     }
471
472     av_free(intra_matrix);
473     av_free(inter_matrix);
474
475     if (vstats_file)
476         fclose(vstats_file);
477     av_free(vstats_filename);
478
479     av_free(streamid_map);
480     av_free(input_codecs);
481     av_free(output_codecs);
482     av_free(stream_maps);
483     av_free(meta_data_maps);
484
485     av_freep(&input_streams);
486     av_freep(&input_files);
487
488     av_free(video_codec_name);
489     av_free(audio_codec_name);
490     av_free(subtitle_codec_name);
491     av_free(data_codec_name);
492
493     av_free(video_standard);
494
495     uninit_opts();
496     av_free(audio_buf);
497     av_free(audio_out);
498     allocated_audio_buf_size= allocated_audio_out_size= 0;
499     av_free(samples);
500
501 #if CONFIG_AVFILTER
502     avfilter_uninit();
503 #endif
504
505     if (received_sigterm) {
506         fprintf(stderr,
507             "Received signal %d: terminating.\n",
508             (int) received_sigterm);
509         exit (255);
510     }
511
512     exit(ret); /* not all OS-es handle main() return value */
513     return ret;
514 }
515
516 /* similar to ff_dynarray_add() and av_fast_realloc() */
517 static void *grow_array(void *array, int elem_size, int *size, int new_size)
518 {
519     if (new_size >= INT_MAX / elem_size) {
520         fprintf(stderr, "Array too big.\n");
521         ffmpeg_exit(1);
522     }
523     if (*size < new_size) {
524         uint8_t *tmp = av_realloc(array, new_size*elem_size);
525         if (!tmp) {
526             fprintf(stderr, "Could not alloc buffer.\n");
527             ffmpeg_exit(1);
528         }
529         memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
530         *size = new_size;
531         return tmp;
532     }
533     return array;
534 }
535
536 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
537 {
538     if(codec && codec->sample_fmts){
539         const enum AVSampleFormat *p= codec->sample_fmts;
540         for(; *p!=-1; p++){
541             if(*p == st->codec->sample_fmt)
542                 break;
543         }
544         if (*p == -1) {
545             av_log(NULL, AV_LOG_WARNING,
546                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
547                    av_get_sample_fmt_name(st->codec->sample_fmt),
548                    codec->name,
549                    av_get_sample_fmt_name(codec->sample_fmts[0]));
550             st->codec->sample_fmt = codec->sample_fmts[0];
551         }
552     }
553 }
554
555 /**
556  * Update the requested input sample format based on the output sample format.
557  * This is currently only used to request float output from decoders which
558  * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
559  * Ideally this will be removed in the future when decoders do not do format
560  * conversion and only output in their native format.
561  */
562 static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
563                               AVCodecContext *enc)
564 {
565     /* if sample formats match or a decoder sample format has already been
566        requested, just return */
567     if (enc->sample_fmt == dec->sample_fmt ||
568         dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
569         return;
570
571     /* if decoder supports more than one output format */
572     if (dec_codec && dec_codec->sample_fmts &&
573         dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
574         dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
575         enum AVSampleFormat *p;
576         int min_dec = -1, min_inc = -1;
577
578         /* find a matching sample format in the encoder */
579         for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
580             if (*p == enc->sample_fmt) {
581                 dec->request_sample_fmt = *p;
582                 return;
583             } else if (*p > enc->sample_fmt) {
584                 min_inc = FFMIN(min_inc, *p - enc->sample_fmt);
585             } else
586                 min_dec = FFMIN(min_dec, enc->sample_fmt - *p);
587         }
588
589         /* if none match, provide the one that matches quality closest */
590         dec->request_sample_fmt = min_inc > 0 ? enc->sample_fmt + min_inc :
591                                   enc->sample_fmt - min_dec;
592     }
593 }
594
595 static void choose_sample_rate(AVStream *st, AVCodec *codec)
596 {
597     if(codec && codec->supported_samplerates){
598         const int *p= codec->supported_samplerates;
599         int best=0;
600         int best_dist=INT_MAX;
601         for(; *p; p++){
602             int dist= abs(st->codec->sample_rate - *p);
603             if(dist < best_dist){
604                 best_dist= dist;
605                 best= *p;
606             }
607         }
608         if(best_dist){
609             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
610         }
611         st->codec->sample_rate= best;
612     }
613 }
614
615 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
616 {
617     if(codec && codec->pix_fmts){
618         const enum PixelFormat *p= codec->pix_fmts;
619         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
620             if(st->codec->codec_id==CODEC_ID_MJPEG){
621                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
622             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
623                 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};
624             }
625         }
626         for(; *p!=-1; p++){
627             if(*p == st->codec->pix_fmt)
628                 break;
629         }
630         if (*p == -1) {
631             if(st->codec->pix_fmt != PIX_FMT_NONE)
632                 av_log(NULL, AV_LOG_WARNING,
633                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
634                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
635                         codec->name,
636                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
637             st->codec->pix_fmt = codec->pix_fmts[0];
638         }
639     }
640 }
641
642 static AVOutputStream *new_output_stream(AVFormatContext *oc, int file_idx)
643 {
644     int idx = oc->nb_streams - 1;
645     AVOutputStream *ost;
646
647     output_streams_for_file[file_idx] =
648         grow_array(output_streams_for_file[file_idx],
649                    sizeof(*output_streams_for_file[file_idx]),
650                    &nb_output_streams_for_file[file_idx],
651                    oc->nb_streams);
652     ost = output_streams_for_file[file_idx][idx] =
653         av_mallocz(sizeof(AVOutputStream));
654     if (!ost) {
655         fprintf(stderr, "Could not alloc output stream\n");
656         ffmpeg_exit(1);
657     }
658     ost->file_index = file_idx;
659     ost->index = idx;
660
661     ost->sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
662     return ost;
663 }
664
665 static int read_ffserver_streams(AVFormatContext *s, const char *filename)
666 {
667     int i, err;
668     AVFormatContext *ic;
669     int nopts = 0;
670
671     err = av_open_input_file(&ic, filename, NULL, FFM_PACKET_SIZE, NULL);
672     if (err < 0)
673         return err;
674     /* copy stream format */
675     s->nb_streams = 0;
676     s->streams = av_mallocz(sizeof(AVStream *) * ic->nb_streams);
677     for(i=0;i<ic->nb_streams;i++) {
678         AVStream *st;
679         AVCodec *codec;
680
681         s->nb_streams++;
682
683         // FIXME: a more elegant solution is needed
684         st = av_mallocz(sizeof(AVStream));
685         memcpy(st, ic->streams[i], sizeof(AVStream));
686         st->codec = avcodec_alloc_context();
687         if (!st->codec) {
688             print_error(filename, AVERROR(ENOMEM));
689             ffmpeg_exit(1);
690         }
691         avcodec_copy_context(st->codec, ic->streams[i]->codec);
692         s->streams[i] = st;
693
694         codec = avcodec_find_encoder(st->codec->codec_id);
695         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
696             if (audio_stream_copy) {
697                 st->stream_copy = 1;
698             } else
699                 choose_sample_fmt(st, codec);
700         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
701             if (video_stream_copy) {
702                 st->stream_copy = 1;
703             } else
704                 choose_pixel_fmt(st, codec);
705         }
706
707         if(st->codec->flags & CODEC_FLAG_BITEXACT)
708             nopts = 1;
709
710         new_output_stream(s, nb_output_files);
711     }
712
713     if (!nopts)
714         s->timestamp = av_gettime();
715
716     av_close_input_file(ic);
717     return 0;
718 }
719
720 static double
721 get_sync_ipts(const AVOutputStream *ost)
722 {
723     const AVInputStream *ist = ost->sync_ist;
724     return (double)(ist->pts - start_time)/AV_TIME_BASE;
725 }
726
727 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
728     int ret;
729
730     while(bsfc){
731         AVPacket new_pkt= *pkt;
732         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
733                                           &new_pkt.data, &new_pkt.size,
734                                           pkt->data, pkt->size,
735                                           pkt->flags & AV_PKT_FLAG_KEY);
736         if(a>0){
737             av_free_packet(pkt);
738             new_pkt.destruct= av_destruct_packet;
739         } else if(a<0){
740             fprintf(stderr, "%s failed for stream %d, codec %s",
741                     bsfc->filter->name, pkt->stream_index,
742                     avctx->codec ? avctx->codec->name : "copy");
743             print_error("", a);
744             if (exit_on_error)
745                 ffmpeg_exit(1);
746         }
747         *pkt= new_pkt;
748
749         bsfc= bsfc->next;
750     }
751
752     ret= av_interleaved_write_frame(s, pkt);
753     if(ret < 0){
754         print_error("av_interleaved_write_frame()", ret);
755         ffmpeg_exit(1);
756     }
757 }
758
759 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
760
761 static void do_audio_out(AVFormatContext *s,
762                          AVOutputStream *ost,
763                          AVInputStream *ist,
764                          unsigned char *buf, int size)
765 {
766     uint8_t *buftmp;
767     int64_t audio_out_size, audio_buf_size;
768     int64_t allocated_for_size= size;
769
770     int size_out, frame_bytes, ret, resample_changed;
771     AVCodecContext *enc= ost->st->codec;
772     AVCodecContext *dec= ist->st->codec;
773     int osize= av_get_bits_per_sample_fmt(enc->sample_fmt)/8;
774     int isize= av_get_bits_per_sample_fmt(dec->sample_fmt)/8;
775     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
776
777 need_realloc:
778     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
779     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
780     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
781     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
782     audio_buf_size*= osize*enc->channels;
783
784     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
785     if(coded_bps > 8*osize)
786         audio_out_size= audio_out_size * coded_bps / (8*osize);
787     audio_out_size += FF_MIN_BUFFER_SIZE;
788
789     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
790         fprintf(stderr, "Buffer sizes too large\n");
791         ffmpeg_exit(1);
792     }
793
794     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
795     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
796     if (!audio_buf || !audio_out){
797         fprintf(stderr, "Out of memory in do_audio_out\n");
798         ffmpeg_exit(1);
799     }
800
801     if (enc->channels != dec->channels || enc->sample_rate != dec->sample_rate)
802         ost->audio_resample = 1;
803
804     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
805                        ost->resample_channels    != dec->channels   ||
806                        ost->resample_sample_rate != dec->sample_rate;
807
808     if ((ost->audio_resample && !ost->resample) || resample_changed) {
809         if (resample_changed) {
810             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",
811                    ist->file_index, ist->st->index,
812                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
813                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
814             ost->resample_sample_fmt  = dec->sample_fmt;
815             ost->resample_channels    = dec->channels;
816             ost->resample_sample_rate = dec->sample_rate;
817             if (ost->resample)
818                 audio_resample_close(ost->resample);
819         }
820         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
821         if (audio_sync_method <= 1 &&
822             ost->resample_sample_fmt  == enc->sample_fmt &&
823             ost->resample_channels    == enc->channels   &&
824             ost->resample_sample_rate == enc->sample_rate) {
825             ost->resample = NULL;
826             ost->audio_resample = 0;
827         } else if (ost->audio_resample) {
828             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
829                 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
830             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
831                                                    enc->sample_rate, dec->sample_rate,
832                                                    enc->sample_fmt,  dec->sample_fmt,
833                                                    16, 10, 0, 0.8);
834             if (!ost->resample) {
835                 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
836                         dec->channels, dec->sample_rate,
837                         enc->channels, enc->sample_rate);
838                 ffmpeg_exit(1);
839             }
840         }
841     }
842
843 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
844     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
845         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
846         if (ost->reformat_ctx)
847             av_audio_convert_free(ost->reformat_ctx);
848         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
849                                                    dec->sample_fmt, 1, NULL, 0);
850         if (!ost->reformat_ctx) {
851             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
852                 av_get_sample_fmt_name(dec->sample_fmt),
853                 av_get_sample_fmt_name(enc->sample_fmt));
854             ffmpeg_exit(1);
855         }
856         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
857     }
858
859     if(audio_sync_method){
860         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
861                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
862         double idelta= delta*dec->sample_rate / enc->sample_rate;
863         int byte_delta= ((int)idelta)*2*dec->channels;
864
865         //FIXME resample delay
866         if(fabs(delta) > 50){
867             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
868                 if(byte_delta < 0){
869                     byte_delta= FFMAX(byte_delta, -size);
870                     size += byte_delta;
871                     buf  -= byte_delta;
872                     if(verbose > 2)
873                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
874                     if(!size)
875                         return;
876                     ist->is_start=0;
877                 }else{
878                     static uint8_t *input_tmp= NULL;
879                     input_tmp= av_realloc(input_tmp, byte_delta + size);
880
881                     if(byte_delta > allocated_for_size - size){
882                         allocated_for_size= byte_delta + (int64_t)size;
883                         goto need_realloc;
884                     }
885                     ist->is_start=0;
886
887                     memset(input_tmp, 0, byte_delta);
888                     memcpy(input_tmp + byte_delta, buf, size);
889                     buf= input_tmp;
890                     size += byte_delta;
891                     if(verbose > 2)
892                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
893                 }
894             }else if(audio_sync_method>1){
895                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
896                 av_assert0(ost->audio_resample);
897                 if(verbose > 2)
898                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
899 //                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));
900                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
901             }
902         }
903     }else
904         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
905                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
906
907     if (ost->audio_resample) {
908         buftmp = audio_buf;
909         size_out = audio_resample(ost->resample,
910                                   (short *)buftmp, (short *)buf,
911                                   size / (dec->channels * isize));
912         size_out = size_out * enc->channels * osize;
913     } else {
914         buftmp = buf;
915         size_out = size;
916     }
917
918     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
919         const void *ibuf[6]= {buftmp};
920         void *obuf[6]= {audio_buf};
921         int istride[6]= {isize};
922         int ostride[6]= {osize};
923         int len= size_out/istride[0];
924         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
925             printf("av_audio_convert() failed\n");
926             if (exit_on_error)
927                 ffmpeg_exit(1);
928             return;
929         }
930         buftmp = audio_buf;
931         size_out = len*osize;
932     }
933
934     /* now encode as many frames as possible */
935     if (enc->frame_size > 1) {
936         /* output resampled raw samples */
937         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
938             fprintf(stderr, "av_fifo_realloc2() failed\n");
939             ffmpeg_exit(1);
940         }
941         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
942
943         frame_bytes = enc->frame_size * osize * enc->channels;
944
945         while (av_fifo_size(ost->fifo) >= frame_bytes) {
946             AVPacket pkt;
947             av_init_packet(&pkt);
948
949             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
950
951             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
952
953             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
954                                        (short *)audio_buf);
955             if (ret < 0) {
956                 fprintf(stderr, "Audio encoding failed\n");
957                 ffmpeg_exit(1);
958             }
959             audio_size += ret;
960             pkt.stream_index= ost->index;
961             pkt.data= audio_out;
962             pkt.size= ret;
963             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
964                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
965             pkt.flags |= AV_PKT_FLAG_KEY;
966             write_frame(s, &pkt, enc, ost->bitstream_filters);
967
968             ost->sync_opts += enc->frame_size;
969         }
970     } else {
971         AVPacket pkt;
972         av_init_packet(&pkt);
973
974         ost->sync_opts += size_out / (osize * enc->channels);
975
976         /* output a pcm frame */
977         /* determine the size of the coded buffer */
978         size_out /= osize;
979         if (coded_bps)
980             size_out = size_out*coded_bps/8;
981
982         if(size_out > audio_out_size){
983             fprintf(stderr, "Internal error, buffer size too small\n");
984             ffmpeg_exit(1);
985         }
986
987         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
988         ret = avcodec_encode_audio(enc, audio_out, size_out,
989                                    (short *)buftmp);
990         if (ret < 0) {
991             fprintf(stderr, "Audio encoding failed\n");
992             ffmpeg_exit(1);
993         }
994         audio_size += ret;
995         pkt.stream_index= ost->index;
996         pkt.data= audio_out;
997         pkt.size= ret;
998         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
999             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1000         pkt.flags |= AV_PKT_FLAG_KEY;
1001         write_frame(s, &pkt, enc, ost->bitstream_filters);
1002     }
1003 }
1004
1005 static void pre_process_video_frame(AVInputStream *ist, AVPicture *picture, void **bufp)
1006 {
1007     AVCodecContext *dec;
1008     AVPicture *picture2;
1009     AVPicture picture_tmp;
1010     uint8_t *buf = 0;
1011
1012     dec = ist->st->codec;
1013
1014     /* deinterlace : must be done before any resize */
1015     if (do_deinterlace) {
1016         int size;
1017
1018         /* create temporary picture */
1019         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1020         buf = av_malloc(size);
1021         if (!buf)
1022             return;
1023
1024         picture2 = &picture_tmp;
1025         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1026
1027         if(avpicture_deinterlace(picture2, picture,
1028                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1029             /* if error, do not deinterlace */
1030             fprintf(stderr, "Deinterlacing failed\n");
1031             av_free(buf);
1032             buf = NULL;
1033             picture2 = picture;
1034         }
1035     } else {
1036         picture2 = picture;
1037     }
1038
1039     if (picture != picture2)
1040         *picture = *picture2;
1041     *bufp = buf;
1042 }
1043
1044 /* we begin to correct av delay at this threshold */
1045 #define AV_DELAY_MAX 0.100
1046
1047 static void do_subtitle_out(AVFormatContext *s,
1048                             AVOutputStream *ost,
1049                             AVInputStream *ist,
1050                             AVSubtitle *sub,
1051                             int64_t pts)
1052 {
1053     static uint8_t *subtitle_out = NULL;
1054     int subtitle_out_max_size = 1024 * 1024;
1055     int subtitle_out_size, nb, i;
1056     AVCodecContext *enc;
1057     AVPacket pkt;
1058
1059     if (pts == AV_NOPTS_VALUE) {
1060         fprintf(stderr, "Subtitle packets must have a pts\n");
1061         if (exit_on_error)
1062             ffmpeg_exit(1);
1063         return;
1064     }
1065
1066     enc = ost->st->codec;
1067
1068     if (!subtitle_out) {
1069         subtitle_out = av_malloc(subtitle_out_max_size);
1070     }
1071
1072     /* Note: DVB subtitle need one packet to draw them and one other
1073        packet to clear them */
1074     /* XXX: signal it in the codec context ? */
1075     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1076         nb = 2;
1077     else
1078         nb = 1;
1079
1080     for(i = 0; i < nb; i++) {
1081         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1082         // start_display_time is required to be 0
1083         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1084         sub->end_display_time -= sub->start_display_time;
1085         sub->start_display_time = 0;
1086         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1087                                                     subtitle_out_max_size, sub);
1088         if (subtitle_out_size < 0) {
1089             fprintf(stderr, "Subtitle encoding failed\n");
1090             ffmpeg_exit(1);
1091         }
1092
1093         av_init_packet(&pkt);
1094         pkt.stream_index = ost->index;
1095         pkt.data = subtitle_out;
1096         pkt.size = subtitle_out_size;
1097         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1098         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1099             /* XXX: the pts correction is handled here. Maybe handling
1100                it in the codec would be better */
1101             if (i == 0)
1102                 pkt.pts += 90 * sub->start_display_time;
1103             else
1104                 pkt.pts += 90 * sub->end_display_time;
1105         }
1106         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1107     }
1108 }
1109
1110 static int bit_buffer_size= 1024*256;
1111 static uint8_t *bit_buffer= NULL;
1112
1113 static void do_video_out(AVFormatContext *s,
1114                          AVOutputStream *ost,
1115                          AVInputStream *ist,
1116                          AVFrame *in_picture,
1117                          int *frame_size)
1118 {
1119     int nb_frames, i, ret, resample_changed;
1120     AVFrame *final_picture, *formatted_picture;
1121     AVCodecContext *enc, *dec;
1122     double sync_ipts;
1123
1124     enc = ost->st->codec;
1125     dec = ist->st->codec;
1126
1127     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1128
1129     /* by default, we output a single frame */
1130     nb_frames = 1;
1131
1132     *frame_size = 0;
1133
1134     if(video_sync_method){
1135         double vdelta = sync_ipts - ost->sync_opts;
1136         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1137         if (vdelta < -1.1)
1138             nb_frames = 0;
1139         else if (video_sync_method == 2 || (video_sync_method<0 && (s->oformat->flags & AVFMT_VARIABLE_FPS))){
1140             if(vdelta<=-0.6){
1141                 nb_frames=0;
1142             }else if(vdelta>0.6)
1143                 ost->sync_opts= lrintf(sync_ipts);
1144         }else if (vdelta > 1.1)
1145             nb_frames = lrintf(vdelta);
1146 //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);
1147         if (nb_frames == 0){
1148             ++nb_frames_drop;
1149             if (verbose>2)
1150                 fprintf(stderr, "*** drop!\n");
1151         }else if (nb_frames > 1) {
1152             nb_frames_dup += nb_frames - 1;
1153             if (verbose>2)
1154                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1155         }
1156     }else
1157         ost->sync_opts= lrintf(sync_ipts);
1158
1159     nb_frames= FFMIN(nb_frames, max_frames[AVMEDIA_TYPE_VIDEO] - ost->frame_number);
1160     if (nb_frames <= 0)
1161         return;
1162
1163     formatted_picture = in_picture;
1164     final_picture = formatted_picture;
1165
1166     resample_changed = ost->resample_width   != dec->width  ||
1167                        ost->resample_height  != dec->height ||
1168                        ost->resample_pix_fmt != dec->pix_fmt;
1169
1170     if (resample_changed) {
1171         av_log(NULL, AV_LOG_INFO,
1172                "Input stream #%d.%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1173                ist->file_index, ist->st->index,
1174                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1175                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1176         if(!ost->video_resample)
1177             ffmpeg_exit(1);
1178     }
1179
1180 #if !CONFIG_AVFILTER
1181     if (ost->video_resample) {
1182         final_picture = &ost->pict_tmp;
1183         if (resample_changed) {
1184             /* initialize a new scaler context */
1185             sws_freeContext(ost->img_resample_ctx);
1186             ost->img_resample_ctx = sws_getContext(
1187                 ist->st->codec->width,
1188                 ist->st->codec->height,
1189                 ist->st->codec->pix_fmt,
1190                 ost->st->codec->width,
1191                 ost->st->codec->height,
1192                 ost->st->codec->pix_fmt,
1193                 ost->sws_flags, NULL, NULL, NULL);
1194             if (ost->img_resample_ctx == NULL) {
1195                 fprintf(stderr, "Cannot get resampling context\n");
1196                 ffmpeg_exit(1);
1197             }
1198         }
1199         sws_scale(ost->img_resample_ctx, formatted_picture->data, formatted_picture->linesize,
1200               0, ost->resample_height, final_picture->data, final_picture->linesize);
1201     }
1202 #endif
1203
1204     /* duplicates frame if needed */
1205     for(i=0;i<nb_frames;i++) {
1206         AVPacket pkt;
1207         av_init_packet(&pkt);
1208         pkt.stream_index= ost->index;
1209
1210         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1211             /* raw pictures are written as AVPicture structure to
1212                avoid any copies. We support temorarily the older
1213                method. */
1214             AVFrame* old_frame = enc->coded_frame;
1215             enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
1216             pkt.data= (uint8_t *)final_picture;
1217             pkt.size=  sizeof(AVPicture);
1218             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1219             pkt.flags |= AV_PKT_FLAG_KEY;
1220
1221             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1222             enc->coded_frame = old_frame;
1223         } else {
1224             AVFrame big_picture;
1225
1226             big_picture= *final_picture;
1227             /* better than nothing: use input picture interlaced
1228                settings */
1229             big_picture.interlaced_frame = in_picture->interlaced_frame;
1230             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1231                 if(top_field_first == -1)
1232                     big_picture.top_field_first = in_picture->top_field_first;
1233                 else
1234                     big_picture.top_field_first = top_field_first;
1235             }
1236
1237             /* handles sameq here. This is not correct because it may
1238                not be a global option */
1239             big_picture.quality = same_quality ? ist->st->quality : ost->st->quality;
1240             if(!me_threshold)
1241                 big_picture.pict_type = 0;
1242 //            big_picture.pts = AV_NOPTS_VALUE;
1243             big_picture.pts= ost->sync_opts;
1244 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1245 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1246             if (ost->forced_kf_index < ost->forced_kf_count &&
1247                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1248                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1249                 ost->forced_kf_index++;
1250             }
1251             ret = avcodec_encode_video(enc,
1252                                        bit_buffer, bit_buffer_size,
1253                                        &big_picture);
1254             if (ret < 0) {
1255                 fprintf(stderr, "Video encoding failed\n");
1256                 ffmpeg_exit(1);
1257             }
1258
1259             if(ret>0){
1260                 pkt.data= bit_buffer;
1261                 pkt.size= ret;
1262                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1263                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1264 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1265    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1266    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1267
1268                 if(enc->coded_frame->key_frame)
1269                     pkt.flags |= AV_PKT_FLAG_KEY;
1270                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1271                 *frame_size = ret;
1272                 video_size += ret;
1273                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1274                 //        enc->frame_number-1, ret, enc->pict_type);
1275                 /* if two pass, output log */
1276                 if (ost->logfile && enc->stats_out) {
1277                     fprintf(ost->logfile, "%s", enc->stats_out);
1278                 }
1279             }
1280         }
1281         ost->sync_opts++;
1282         ost->frame_number++;
1283     }
1284 }
1285
1286 static double psnr(double d){
1287     return -10.0*log(d)/log(10.0);
1288 }
1289
1290 static void do_video_stats(AVFormatContext *os, AVOutputStream *ost,
1291                            int frame_size)
1292 {
1293     AVCodecContext *enc;
1294     int frame_number;
1295     double ti1, bitrate, avg_bitrate;
1296
1297     /* this is executed just the first time do_video_stats is called */
1298     if (!vstats_file) {
1299         vstats_file = fopen(vstats_filename, "w");
1300         if (!vstats_file) {
1301             perror("fopen");
1302             ffmpeg_exit(1);
1303         }
1304     }
1305
1306     enc = ost->st->codec;
1307     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1308         frame_number = ost->frame_number;
1309         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1310         if (enc->flags&CODEC_FLAG_PSNR)
1311             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1312
1313         fprintf(vstats_file,"f_size= %6d ", frame_size);
1314         /* compute pts value */
1315         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1316         if (ti1 < 0.01)
1317             ti1 = 0.01;
1318
1319         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1320         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1321         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1322             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1323         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1324     }
1325 }
1326
1327 static void print_report(AVFormatContext **output_files,
1328                          AVOutputStream **ost_table, int nb_ostreams,
1329                          int is_last_report)
1330 {
1331     char buf[1024];
1332     AVOutputStream *ost;
1333     AVFormatContext *oc;
1334     int64_t total_size;
1335     AVCodecContext *enc;
1336     int frame_number, vid, i;
1337     double bitrate, ti1, pts;
1338     static int64_t last_time = -1;
1339     static int qp_histogram[52];
1340
1341     if (!is_last_report) {
1342         int64_t cur_time;
1343         /* display the report every 0.5 seconds */
1344         cur_time = av_gettime();
1345         if (last_time == -1) {
1346             last_time = cur_time;
1347             return;
1348         }
1349         if ((cur_time - last_time) < 500000)
1350             return;
1351         last_time = cur_time;
1352     }
1353
1354
1355     oc = output_files[0];
1356
1357     total_size = avio_size(oc->pb);
1358     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1359         total_size= avio_tell(oc->pb);
1360
1361     buf[0] = '\0';
1362     ti1 = 1e10;
1363     vid = 0;
1364     for(i=0;i<nb_ostreams;i++) {
1365         float q = -1;
1366         ost = ost_table[i];
1367         enc = ost->st->codec;
1368         if (!ost->st->stream_copy && enc->coded_frame)
1369             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1370         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1371             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1372         }
1373         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1374             float t = (av_gettime()-timer_start) / 1000000.0;
1375
1376             frame_number = ost->frame_number;
1377             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1378                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1379             if(is_last_report)
1380                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1381             if(qp_hist){
1382                 int j;
1383                 int qp = lrintf(q);
1384                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1385                     qp_histogram[qp]++;
1386                 for(j=0; j<32; j++)
1387                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1388             }
1389             if (enc->flags&CODEC_FLAG_PSNR){
1390                 int j;
1391                 double error, error_sum=0;
1392                 double scale, scale_sum=0;
1393                 char type[3]= {'Y','U','V'};
1394                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1395                 for(j=0; j<3; j++){
1396                     if(is_last_report){
1397                         error= enc->error[j];
1398                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1399                     }else{
1400                         error= enc->coded_frame->error[j];
1401                         scale= enc->width*enc->height*255.0*255.0;
1402                     }
1403                     if(j) scale/=4;
1404                     error_sum += error;
1405                     scale_sum += scale;
1406                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1407                 }
1408                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1409             }
1410             vid = 1;
1411         }
1412         /* compute min output value */
1413         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1414         if ((pts < ti1) && (pts > 0))
1415             ti1 = pts;
1416     }
1417     if (ti1 < 0.01)
1418         ti1 = 0.01;
1419
1420     if (verbose > 0 || is_last_report) {
1421         bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1422
1423         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1424             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1425             (double)total_size / 1024, ti1, bitrate);
1426
1427         if (nb_frames_dup || nb_frames_drop)
1428           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1429                   nb_frames_dup, nb_frames_drop);
1430
1431         if (verbose >= 0)
1432             fprintf(stderr, "%s    \r", buf);
1433
1434         fflush(stderr);
1435     }
1436
1437     if (is_last_report && verbose >= 0){
1438         int64_t raw= audio_size + video_size + extra_size;
1439         fprintf(stderr, "\n");
1440         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1441                 video_size/1024.0,
1442                 audio_size/1024.0,
1443                 extra_size/1024.0,
1444                 100.0*(total_size - raw)/raw
1445         );
1446     }
1447 }
1448
1449 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1450 {
1451     int fill_char = 0x00;
1452     if (sample_fmt == AV_SAMPLE_FMT_U8)
1453         fill_char = 0x80;
1454     memset(buf, fill_char, size);
1455 }
1456
1457 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1458 static int output_packet(AVInputStream *ist, int ist_index,
1459                          AVOutputStream **ost_table, int nb_ostreams,
1460                          const AVPacket *pkt)
1461 {
1462     AVFormatContext *os;
1463     AVOutputStream *ost;
1464     int ret, i;
1465     int got_output;
1466     AVFrame picture;
1467     void *buffer_to_free = NULL;
1468     static unsigned int samples_size= 0;
1469     AVSubtitle subtitle, *subtitle_to_free;
1470     int64_t pkt_pts = AV_NOPTS_VALUE;
1471 #if CONFIG_AVFILTER
1472     int frame_available;
1473 #endif
1474
1475     AVPacket avpkt;
1476     int bps = av_get_bits_per_sample_fmt(ist->st->codec->sample_fmt)>>3;
1477
1478     if(ist->next_pts == AV_NOPTS_VALUE)
1479         ist->next_pts= ist->pts;
1480
1481     if (pkt == NULL) {
1482         /* EOF handling */
1483         av_init_packet(&avpkt);
1484         avpkt.data = NULL;
1485         avpkt.size = 0;
1486         goto handle_eof;
1487     } else {
1488         avpkt = *pkt;
1489     }
1490
1491     if(pkt->dts != AV_NOPTS_VALUE)
1492         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1493     if(pkt->pts != AV_NOPTS_VALUE)
1494         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1495
1496     //while we have more to decode or while the decoder did output something on EOF
1497     while (avpkt.size > 0 || (!pkt && got_output)) {
1498         uint8_t *data_buf, *decoded_data_buf;
1499         int data_size, decoded_data_size;
1500     handle_eof:
1501         ist->pts= ist->next_pts;
1502
1503         if(avpkt.size && avpkt.size != pkt->size &&
1504            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1505             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1506             ist->showed_multi_packet_warning=1;
1507         }
1508
1509         /* decode the packet if needed */
1510         decoded_data_buf = NULL; /* fail safe */
1511         decoded_data_size= 0;
1512         data_buf  = avpkt.data;
1513         data_size = avpkt.size;
1514         subtitle_to_free = NULL;
1515         if (ist->decoding_needed) {
1516             switch(ist->st->codec->codec_type) {
1517             case AVMEDIA_TYPE_AUDIO:{
1518                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1519                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1520                     av_free(samples);
1521                     samples= av_malloc(samples_size);
1522                 }
1523                 decoded_data_size= samples_size;
1524                     /* XXX: could avoid copy if PCM 16 bits with same
1525                        endianness as CPU */
1526                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1527                                             &avpkt);
1528                 if (ret < 0)
1529                     goto fail_decode;
1530                 avpkt.data += ret;
1531                 avpkt.size -= ret;
1532                 data_size   = ret;
1533                 got_output  = decoded_data_size > 0;
1534                 /* Some bug in mpeg audio decoder gives */
1535                 /* decoded_data_size < 0, it seems they are overflows */
1536                 if (!got_output) {
1537                     /* no audio frame */
1538                     continue;
1539                 }
1540                 decoded_data_buf = (uint8_t *)samples;
1541                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1542                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1543                 break;}
1544             case AVMEDIA_TYPE_VIDEO:
1545                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1546                     /* XXX: allocate picture correctly */
1547                     avcodec_get_frame_defaults(&picture);
1548                     avpkt.pts = pkt_pts;
1549                     avpkt.dts = ist->pts;
1550                     pkt_pts = AV_NOPTS_VALUE;
1551
1552                     ret = avcodec_decode_video2(ist->st->codec,
1553                                                 &picture, &got_output, &avpkt);
1554                     ist->st->quality= picture.quality;
1555                     if (ret < 0)
1556                         goto fail_decode;
1557                     if (!got_output) {
1558                         /* no picture yet */
1559                         goto discard_packet;
1560                     }
1561                     ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, picture.pkt_pts, picture.pkt_dts);
1562                     if (ist->st->codec->time_base.num != 0) {
1563                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1564                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1565                                           ist->st->codec->time_base.num * ticks) /
1566                             ist->st->codec->time_base.den;
1567                     }
1568                     avpkt.size = 0;
1569                     buffer_to_free = NULL;
1570                     pre_process_video_frame(ist, (AVPicture *)&picture, &buffer_to_free);
1571                     break;
1572             case AVMEDIA_TYPE_SUBTITLE:
1573                 ret = avcodec_decode_subtitle2(ist->st->codec,
1574                                                &subtitle, &got_output, &avpkt);
1575                 if (ret < 0)
1576                     goto fail_decode;
1577                 if (!got_output) {
1578                     goto discard_packet;
1579                 }
1580                 subtitle_to_free = &subtitle;
1581                 avpkt.size = 0;
1582                 break;
1583             default:
1584                 goto fail_decode;
1585             }
1586         } else {
1587             switch(ist->st->codec->codec_type) {
1588             case AVMEDIA_TYPE_AUDIO:
1589                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1590                     ist->st->codec->sample_rate;
1591                 break;
1592             case AVMEDIA_TYPE_VIDEO:
1593                 if (ist->st->codec->time_base.num != 0) {
1594                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1595                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1596                                       ist->st->codec->time_base.num * ticks) /
1597                         ist->st->codec->time_base.den;
1598                 }
1599                 break;
1600             }
1601             ret = avpkt.size;
1602             avpkt.size = 0;
1603         }
1604
1605 #if CONFIG_AVFILTER
1606         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1607             for (i = 0; i < nb_ostreams; i++) {
1608                 ost = ost_table[i];
1609                 if (ost->input_video_filter && ost->source_index == ist_index) {
1610                     AVRational sar;
1611                     if (ist->st->sample_aspect_ratio.num)
1612                         sar = ist->st->sample_aspect_ratio;
1613                     else
1614                         sar = ist->st->codec->sample_aspect_ratio;
1615                     // add it to be filtered
1616                     av_vsrc_buffer_add_frame(ost->input_video_filter, &picture,
1617                                              ist->pts,
1618                                              sar);
1619                 }
1620             }
1621         }
1622 #endif
1623
1624         // preprocess audio (volume)
1625         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1626             if (audio_volume != 256) {
1627                 short *volp;
1628                 volp = samples;
1629                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1630                     int v = ((*volp) * audio_volume + 128) >> 8;
1631                     if (v < -32768) v = -32768;
1632                     if (v >  32767) v = 32767;
1633                     *volp++ = v;
1634                 }
1635             }
1636         }
1637
1638         /* frame rate emulation */
1639         if (rate_emu) {
1640             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1641             int64_t now = av_gettime() - ist->start;
1642             if (pts > now)
1643                 usleep(pts - now);
1644         }
1645         /* if output time reached then transcode raw format,
1646            encode packets and output them */
1647         if (start_time == 0 || ist->pts >= start_time)
1648             for(i=0;i<nb_ostreams;i++) {
1649                 int frame_size;
1650
1651                 ost = ost_table[i];
1652                 if (ost->source_index == ist_index) {
1653 #if CONFIG_AVFILTER
1654                 frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1655                     !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1656                 while (frame_available) {
1657                     AVRational ist_pts_tb;
1658                     if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter)
1659                         get_filtered_video_frame(ost->output_video_filter, &picture, &ost->picref, &ist_pts_tb);
1660                     if (ost->picref)
1661                         ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1662 #endif
1663                     os = output_files[ost->file_index];
1664
1665                     /* set the input output pts pairs */
1666                     //ost->sync_ipts = (double)(ist->pts + input_files_ts_offset[ist->file_index] - start_time)/ AV_TIME_BASE;
1667
1668                     if (ost->encoding_needed) {
1669                         av_assert0(ist->decoding_needed);
1670                         switch(ost->st->codec->codec_type) {
1671                         case AVMEDIA_TYPE_AUDIO:
1672                             do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1673                             break;
1674                         case AVMEDIA_TYPE_VIDEO:
1675 #if CONFIG_AVFILTER
1676                             if (ost->picref->video && !ost->frame_aspect_ratio)
1677                                 ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
1678 #endif
1679                             do_video_out(os, ost, ist, &picture, &frame_size);
1680                             if (vstats_filename && frame_size)
1681                                 do_video_stats(os, ost, frame_size);
1682                             break;
1683                         case AVMEDIA_TYPE_SUBTITLE:
1684                             do_subtitle_out(os, ost, ist, &subtitle,
1685                                             pkt->pts);
1686                             break;
1687                         default:
1688                             abort();
1689                         }
1690                     } else {
1691                         AVFrame avframe; //FIXME/XXX remove this
1692                         AVPacket opkt;
1693                         int64_t ost_tb_start_time= av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1694
1695                         av_init_packet(&opkt);
1696
1697                         if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1698 #if !CONFIG_AVFILTER
1699                             continue;
1700 #else
1701                             goto cont;
1702 #endif
1703
1704                         /* no reencoding needed : output the packet directly */
1705                         /* force the input stream PTS */
1706
1707                         avcodec_get_frame_defaults(&avframe);
1708                         ost->st->codec->coded_frame= &avframe;
1709                         avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1710
1711                         if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1712                             audio_size += data_size;
1713                         else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1714                             video_size += data_size;
1715                             ost->sync_opts++;
1716                         }
1717
1718                         opkt.stream_index= ost->index;
1719                         if(pkt->pts != AV_NOPTS_VALUE)
1720                             opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1721                         else
1722                             opkt.pts= AV_NOPTS_VALUE;
1723
1724                         if (pkt->dts == AV_NOPTS_VALUE)
1725                             opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1726                         else
1727                             opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1728                         opkt.dts -= ost_tb_start_time;
1729
1730                         opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1731                         opkt.flags= pkt->flags;
1732
1733                         //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1734                         if(   ost->st->codec->codec_id != CODEC_ID_H264
1735                            && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1736                            && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1737                            ) {
1738                             if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1739                                 opkt.destruct= av_destruct_packet;
1740                         } else {
1741                             opkt.data = data_buf;
1742                             opkt.size = data_size;
1743                         }
1744
1745                         write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1746                         ost->st->codec->frame_number++;
1747                         ost->frame_number++;
1748                         av_free_packet(&opkt);
1749                     }
1750 #if CONFIG_AVFILTER
1751                     cont:
1752                     frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1753                                        ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1754                     if (ost->picref)
1755                         avfilter_unref_buffer(ost->picref);
1756                 }
1757 #endif
1758                 }
1759             }
1760
1761         av_free(buffer_to_free);
1762         /* XXX: allocate the subtitles in the codec ? */
1763         if (subtitle_to_free) {
1764             avsubtitle_free(subtitle_to_free);
1765             subtitle_to_free = NULL;
1766         }
1767     }
1768  discard_packet:
1769     if (pkt == NULL) {
1770         /* EOF handling */
1771
1772         for(i=0;i<nb_ostreams;i++) {
1773             ost = ost_table[i];
1774             if (ost->source_index == ist_index) {
1775                 AVCodecContext *enc= ost->st->codec;
1776                 os = output_files[ost->file_index];
1777
1778                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1779                     continue;
1780                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1781                     continue;
1782
1783                 if (ost->encoding_needed) {
1784                     for(;;) {
1785                         AVPacket pkt;
1786                         int fifo_bytes;
1787                         av_init_packet(&pkt);
1788                         pkt.stream_index= ost->index;
1789
1790                         switch(ost->st->codec->codec_type) {
1791                         case AVMEDIA_TYPE_AUDIO:
1792                             fifo_bytes = av_fifo_size(ost->fifo);
1793                             ret = 0;
1794                             /* encode any samples remaining in fifo */
1795                             if (fifo_bytes > 0) {
1796                                 int osize = av_get_bits_per_sample_fmt(enc->sample_fmt) >> 3;
1797                                 int fs_tmp = enc->frame_size;
1798
1799                                 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1800                                 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1801                                     enc->frame_size = fifo_bytes / (osize * enc->channels);
1802                                 } else { /* pad */
1803                                     int frame_bytes = enc->frame_size*osize*enc->channels;
1804                                     if (allocated_audio_buf_size < frame_bytes)
1805                                         ffmpeg_exit(1);
1806                                     generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1807                                 }
1808
1809                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1810                                 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1811                                                           ost->st->time_base.num, enc->sample_rate);
1812                                 enc->frame_size = fs_tmp;
1813                             }
1814                             if(ret <= 0) {
1815                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1816                             }
1817                             if (ret < 0) {
1818                                 fprintf(stderr, "Audio encoding failed\n");
1819                                 ffmpeg_exit(1);
1820                             }
1821                             audio_size += ret;
1822                             pkt.flags |= AV_PKT_FLAG_KEY;
1823                             break;
1824                         case AVMEDIA_TYPE_VIDEO:
1825                             ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1826                             if (ret < 0) {
1827                                 fprintf(stderr, "Video encoding failed\n");
1828                                 ffmpeg_exit(1);
1829                             }
1830                             video_size += ret;
1831                             if(enc->coded_frame && enc->coded_frame->key_frame)
1832                                 pkt.flags |= AV_PKT_FLAG_KEY;
1833                             if (ost->logfile && enc->stats_out) {
1834                                 fprintf(ost->logfile, "%s", enc->stats_out);
1835                             }
1836                             break;
1837                         default:
1838                             ret=-1;
1839                         }
1840
1841                         if(ret<=0)
1842                             break;
1843                         pkt.data= bit_buffer;
1844                         pkt.size= ret;
1845                         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1846                             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1847                         write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1848                     }
1849                 }
1850             }
1851         }
1852     }
1853
1854     return 0;
1855  fail_decode:
1856     return -1;
1857 }
1858
1859 static void print_sdp(AVFormatContext **avc, int n)
1860 {
1861     char sdp[2048];
1862
1863     av_sdp_create(avc, n, sdp, sizeof(sdp));
1864     printf("SDP:\n%s\n", sdp);
1865     fflush(stdout);
1866 }
1867
1868 static int copy_chapters(int infile, int outfile)
1869 {
1870     AVFormatContext *is = input_files[infile].ctx;
1871     AVFormatContext *os = output_files[outfile];
1872     int i;
1873
1874     for (i = 0; i < is->nb_chapters; i++) {
1875         AVChapter *in_ch = is->chapters[i], *out_ch;
1876         int64_t ts_off   = av_rescale_q(start_time - input_files_ts_offset[infile],
1877                                       AV_TIME_BASE_Q, in_ch->time_base);
1878         int64_t rt       = (recording_time == INT64_MAX) ? INT64_MAX :
1879                            av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
1880
1881
1882         if (in_ch->end < ts_off)
1883             continue;
1884         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
1885             break;
1886
1887         out_ch = av_mallocz(sizeof(AVChapter));
1888         if (!out_ch)
1889             return AVERROR(ENOMEM);
1890
1891         out_ch->id        = in_ch->id;
1892         out_ch->time_base = in_ch->time_base;
1893         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
1894         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
1895
1896         if (metadata_chapters_autocopy)
1897             av_metadata_copy(&out_ch->metadata, in_ch->metadata, 0);
1898
1899         os->nb_chapters++;
1900         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
1901         if (!os->chapters)
1902             return AVERROR(ENOMEM);
1903         os->chapters[os->nb_chapters - 1] = out_ch;
1904     }
1905     return 0;
1906 }
1907
1908 static void parse_forced_key_frames(char *kf, AVOutputStream *ost,
1909                                     AVCodecContext *avctx)
1910 {
1911     char *p;
1912     int n = 1, i;
1913     int64_t t;
1914
1915     for (p = kf; *p; p++)
1916         if (*p == ',')
1917             n++;
1918     ost->forced_kf_count = n;
1919     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1920     if (!ost->forced_kf_pts) {
1921         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1922         ffmpeg_exit(1);
1923     }
1924     for (i = 0; i < n; i++) {
1925         p = i ? strchr(p, ',') + 1 : kf;
1926         t = parse_time_or_die("force_key_frames", p, 1);
1927         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1928     }
1929 }
1930
1931 /*
1932  * The following code is the main loop of the file converter
1933  */
1934 static int transcode(AVFormatContext **output_files,
1935                      int nb_output_files,
1936                      AVInputFile *input_files,
1937                      int nb_input_files,
1938                      AVStreamMap *stream_maps, int nb_stream_maps)
1939 {
1940     int ret = 0, i, j, k, n, nb_ostreams = 0;
1941     AVFormatContext *is, *os;
1942     AVCodecContext *codec, *icodec;
1943     AVOutputStream *ost, **ost_table = NULL;
1944     AVInputStream *ist;
1945     char error[1024];
1946     int want_sdp = 1;
1947     uint8_t no_packet[MAX_FILES]={0};
1948     int no_packet_count=0;
1949
1950     if (rate_emu)
1951         for (i = 0; i < nb_input_streams; i++)
1952             input_streams[i].start = av_gettime();
1953
1954     /* output stream init */
1955     nb_ostreams = 0;
1956     for(i=0;i<nb_output_files;i++) {
1957         os = output_files[i];
1958         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1959             av_dump_format(output_files[i], i, output_files[i]->filename, 1);
1960             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
1961             ret = AVERROR(EINVAL);
1962             goto fail;
1963         }
1964         nb_ostreams += os->nb_streams;
1965     }
1966     if (nb_stream_maps > 0 && nb_stream_maps != nb_ostreams) {
1967         fprintf(stderr, "Number of stream maps must match number of output streams\n");
1968         ret = AVERROR(EINVAL);
1969         goto fail;
1970     }
1971
1972     /* Sanity check the mapping args -- do the input files & streams exist? */
1973     for(i=0;i<nb_stream_maps;i++) {
1974         int fi = stream_maps[i].file_index;
1975         int si = stream_maps[i].stream_index;
1976
1977         if (fi < 0 || fi > nb_input_files - 1 ||
1978             si < 0 || si > input_files[fi].ctx->nb_streams - 1) {
1979             fprintf(stderr,"Could not find input stream #%d.%d\n", fi, si);
1980             ret = AVERROR(EINVAL);
1981             goto fail;
1982         }
1983         fi = stream_maps[i].sync_file_index;
1984         si = stream_maps[i].sync_stream_index;
1985         if (fi < 0 || fi > nb_input_files - 1 ||
1986             si < 0 || si > input_files[fi].ctx->nb_streams - 1) {
1987             fprintf(stderr,"Could not find sync stream #%d.%d\n", fi, si);
1988             ret = AVERROR(EINVAL);
1989             goto fail;
1990         }
1991     }
1992
1993     ost_table = av_mallocz(sizeof(AVOutputStream *) * nb_ostreams);
1994     if (!ost_table)
1995         goto fail;
1996     n = 0;
1997     for(k=0;k<nb_output_files;k++) {
1998         os = output_files[k];
1999         for(i=0;i<os->nb_streams;i++,n++) {
2000             int found;
2001             ost = ost_table[n] = output_streams_for_file[k][i];
2002             ost->st = os->streams[i];
2003             if (nb_stream_maps > 0) {
2004                 ost->source_index = input_files[stream_maps[n].file_index].ist_index +
2005                     stream_maps[n].stream_index;
2006
2007                 /* Sanity check that the stream types match */
2008                 if (input_streams[ost->source_index].st->codec->codec_type != ost->st->codec->codec_type) {
2009                     int i= ost->file_index;
2010                     av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2011                     fprintf(stderr, "Codec type mismatch for mapping #%d.%d -> #%d.%d\n",
2012                         stream_maps[n].file_index, stream_maps[n].stream_index,
2013                         ost->file_index, ost->index);
2014                     ffmpeg_exit(1);
2015                 }
2016
2017             } else {
2018                 int best_nb_frames=-1;
2019                 /* get corresponding input stream index : we select the first one with the right type */
2020                 found = 0;
2021                 for (j = 0; j < nb_input_streams; j++) {
2022                     int skip=0;
2023                     ist = &input_streams[j];
2024                     if(opt_programid){
2025                         int pi,si;
2026                         AVFormatContext *f = input_files[ist->file_index].ctx;
2027                         skip=1;
2028                         for(pi=0; pi<f->nb_programs; pi++){
2029                             AVProgram *p= f->programs[pi];
2030                             if(p->id == opt_programid)
2031                                 for(si=0; si<p->nb_stream_indexes; si++){
2032                                     if(f->streams[ p->stream_index[si] ] == ist->st)
2033                                         skip=0;
2034                                 }
2035                         }
2036                     }
2037                     if (ist->discard && ist->st->discard != AVDISCARD_ALL && !skip &&
2038                         ist->st->codec->codec_type == ost->st->codec->codec_type) {
2039                         if(best_nb_frames < ist->st->codec_info_nb_frames){
2040                             best_nb_frames= ist->st->codec_info_nb_frames;
2041                             ost->source_index = j;
2042                             found = 1;
2043                         }
2044                     }
2045                 }
2046
2047                 if (!found) {
2048                     if(! opt_programid) {
2049                         /* try again and reuse existing stream */
2050                         for (j = 0; j < nb_input_streams; j++) {
2051                             ist = &input_streams[j];
2052                             if (   ist->st->codec->codec_type == ost->st->codec->codec_type
2053                                 && ist->st->discard != AVDISCARD_ALL) {
2054                                 ost->source_index = j;
2055                                 found = 1;
2056                             }
2057                         }
2058                     }
2059                     if (!found) {
2060                         int i= ost->file_index;
2061                         av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2062                         fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",
2063                                 ost->file_index, ost->index);
2064                         ffmpeg_exit(1);
2065                     }
2066                 }
2067             }
2068             ist = &input_streams[ost->source_index];
2069             ist->discard = 0;
2070             ost->sync_ist = (nb_stream_maps > 0) ?
2071                 &input_streams[input_files[stream_maps[n].sync_file_index].ist_index +
2072                          stream_maps[n].sync_stream_index] : ist;
2073         }
2074     }
2075
2076     /* for each output stream, we compute the right encoding parameters */
2077     for(i=0;i<nb_ostreams;i++) {
2078         ost = ost_table[i];
2079         os = output_files[ost->file_index];
2080         ist = &input_streams[ost->source_index];
2081
2082         codec = ost->st->codec;
2083         icodec = ist->st->codec;
2084
2085         if (metadata_streams_autocopy)
2086             av_metadata_copy(&ost->st->metadata, ist->st->metadata,
2087                              AV_METADATA_DONT_OVERWRITE);
2088
2089         ost->st->disposition = ist->st->disposition;
2090         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2091         codec->chroma_sample_location = icodec->chroma_sample_location;
2092
2093         if (ost->st->stream_copy) {
2094             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2095
2096             if (extra_size > INT_MAX)
2097                 goto fail;
2098
2099             /* if stream_copy is selected, no need to decode or encode */
2100             codec->codec_id = icodec->codec_id;
2101             codec->codec_type = icodec->codec_type;
2102
2103             if(!codec->codec_tag){
2104                 if(   !os->oformat->codec_tag
2105                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2106                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2107                     codec->codec_tag = icodec->codec_tag;
2108             }
2109
2110             codec->bit_rate = icodec->bit_rate;
2111             codec->rc_max_rate    = icodec->rc_max_rate;
2112             codec->rc_buffer_size = icodec->rc_buffer_size;
2113             codec->extradata= av_mallocz(extra_size);
2114             if (!codec->extradata)
2115                 goto fail;
2116             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2117             codec->extradata_size= icodec->extradata_size;
2118             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){
2119                 codec->time_base = icodec->time_base;
2120                 codec->time_base.num *= icodec->ticks_per_frame;
2121                 av_reduce(&codec->time_base.num, &codec->time_base.den,
2122                           codec->time_base.num, codec->time_base.den, INT_MAX);
2123             }else
2124                 codec->time_base = ist->st->time_base;
2125             switch(codec->codec_type) {
2126             case AVMEDIA_TYPE_AUDIO:
2127                 if(audio_volume != 256) {
2128                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2129                     ffmpeg_exit(1);
2130                 }
2131                 codec->channel_layout = icodec->channel_layout;
2132                 codec->sample_rate = icodec->sample_rate;
2133                 codec->channels = icodec->channels;
2134                 codec->frame_size = icodec->frame_size;
2135                 codec->audio_service_type = icodec->audio_service_type;
2136                 codec->block_align= icodec->block_align;
2137                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2138                     codec->block_align= 0;
2139                 if(codec->codec_id == CODEC_ID_AC3)
2140                     codec->block_align= 0;
2141                 break;
2142             case AVMEDIA_TYPE_VIDEO:
2143                 codec->pix_fmt = icodec->pix_fmt;
2144                 codec->width = icodec->width;
2145                 codec->height = icodec->height;
2146                 codec->has_b_frames = icodec->has_b_frames;
2147                 if (!codec->sample_aspect_ratio.num) {
2148                     codec->sample_aspect_ratio =
2149                     ost->st->sample_aspect_ratio =
2150                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2151                         ist->st->codec->sample_aspect_ratio.num ?
2152                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2153                 }
2154                 break;
2155             case AVMEDIA_TYPE_SUBTITLE:
2156                 codec->width = icodec->width;
2157                 codec->height = icodec->height;
2158                 break;
2159             case AVMEDIA_TYPE_DATA:
2160                 break;
2161             default:
2162                 abort();
2163             }
2164         } else {
2165             switch(codec->codec_type) {
2166             case AVMEDIA_TYPE_AUDIO:
2167                 ost->fifo= av_fifo_alloc(1024);
2168                 if(!ost->fifo)
2169                     goto fail;
2170                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2171                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2172                 icodec->request_channels = codec->channels;
2173                 ist->decoding_needed = 1;
2174                 ost->encoding_needed = 1;
2175                 ost->resample_sample_fmt  = icodec->sample_fmt;
2176                 ost->resample_sample_rate = icodec->sample_rate;
2177                 ost->resample_channels    = icodec->channels;
2178                 break;
2179             case AVMEDIA_TYPE_VIDEO:
2180                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2181                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2182                     ffmpeg_exit(1);
2183                 }
2184                 ost->video_resample = codec->width   != icodec->width  ||
2185                                       codec->height  != icodec->height ||
2186                                       codec->pix_fmt != icodec->pix_fmt;
2187                 if (ost->video_resample) {
2188 #if !CONFIG_AVFILTER
2189                     avcodec_get_frame_defaults(&ost->pict_tmp);
2190                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2191                                          codec->width, codec->height)) {
2192                         fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
2193                         ffmpeg_exit(1);
2194                     }
2195                     ost->img_resample_ctx = sws_getContext(
2196                         icodec->width,
2197                         icodec->height,
2198                             icodec->pix_fmt,
2199                             codec->width,
2200                             codec->height,
2201                             codec->pix_fmt,
2202                             ost->sws_flags, NULL, NULL, NULL);
2203                     if (ost->img_resample_ctx == NULL) {
2204                         fprintf(stderr, "Cannot get resampling context\n");
2205                         ffmpeg_exit(1);
2206                     }
2207 #endif
2208                     codec->bits_per_raw_sample= 0;
2209                 }
2210                 ost->resample_height = icodec->height;
2211                 ost->resample_width  = icodec->width;
2212                 ost->resample_pix_fmt= icodec->pix_fmt;
2213                 ost->encoding_needed = 1;
2214                 ist->decoding_needed = 1;
2215
2216 #if CONFIG_AVFILTER
2217                 if (configure_video_filters(ist, ost)) {
2218                     fprintf(stderr, "Error opening filters!\n");
2219                     exit(1);
2220                 }
2221 #endif
2222                 break;
2223             case AVMEDIA_TYPE_SUBTITLE:
2224                 ost->encoding_needed = 1;
2225                 ist->decoding_needed = 1;
2226                 break;
2227             default:
2228                 abort();
2229                 break;
2230             }
2231             /* two pass mode */
2232             if (ost->encoding_needed &&
2233                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2234                 char logfilename[1024];
2235                 FILE *f;
2236
2237                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2238                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2239                          i);
2240                 if (codec->flags & CODEC_FLAG_PASS1) {
2241                     f = fopen(logfilename, "wb");
2242                     if (!f) {
2243                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2244                         ffmpeg_exit(1);
2245                     }
2246                     ost->logfile = f;
2247                 } else {
2248                     char  *logbuffer;
2249                     size_t logbuffer_size;
2250                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2251                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2252                         ffmpeg_exit(1);
2253                     }
2254                     codec->stats_in = logbuffer;
2255                 }
2256             }
2257         }
2258         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2259             int size= codec->width * codec->height;
2260             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2261         }
2262     }
2263
2264     if (!bit_buffer)
2265         bit_buffer = av_malloc(bit_buffer_size);
2266     if (!bit_buffer) {
2267         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2268                 bit_buffer_size);
2269         ret = AVERROR(ENOMEM);
2270         goto fail;
2271     }
2272
2273     /* open each encoder */
2274     for(i=0;i<nb_ostreams;i++) {
2275         ost = ost_table[i];
2276         if (ost->encoding_needed) {
2277             AVCodec *codec = i < nb_output_codecs ? output_codecs[i] : NULL;
2278             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2279             if (!codec)
2280                 codec = avcodec_find_encoder(ost->st->codec->codec_id);
2281             if (!codec) {
2282                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2283                          ost->st->codec->codec_id, ost->file_index, ost->index);
2284                 ret = AVERROR(EINVAL);
2285                 goto dump_format;
2286             }
2287             if (dec->subtitle_header) {
2288                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2289                 if (!ost->st->codec->subtitle_header) {
2290                     ret = AVERROR(ENOMEM);
2291                     goto dump_format;
2292                 }
2293                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2294                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2295             }
2296             if (avcodec_open(ost->st->codec, codec) < 0) {
2297                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2298                         ost->file_index, ost->index);
2299                 ret = AVERROR(EINVAL);
2300                 goto dump_format;
2301             }
2302             extra_size += ost->st->codec->extradata_size;
2303         }
2304     }
2305
2306     /* open each decoder */
2307     for (i = 0; i < nb_input_streams; i++) {
2308         ist = &input_streams[i];
2309         if (ist->decoding_needed) {
2310             AVCodec *codec = i < nb_input_codecs ? input_codecs[i] : NULL;
2311             if (!codec)
2312                 codec = avcodec_find_decoder(ist->st->codec->codec_id);
2313             if (!codec) {
2314                 snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
2315                         ist->st->codec->codec_id, ist->file_index, ist->st->index);
2316                 ret = AVERROR(EINVAL);
2317                 goto dump_format;
2318             }
2319
2320             /* update requested sample format for the decoder based on the
2321                corresponding encoder sample format */
2322             for (j = 0; j < nb_ostreams; j++) {
2323                 ost = ost_table[j];
2324                 if (ost->source_index == i) {
2325                     update_sample_fmt(ist->st->codec, codec, ost->st->codec);
2326                     break;
2327                 }
2328             }
2329
2330             if (avcodec_open(ist->st->codec, codec) < 0) {
2331                 snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
2332                         ist->file_index, ist->st->index);
2333                 ret = AVERROR(EINVAL);
2334                 goto dump_format;
2335             }
2336             //if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2337             //    ist->st->codec->flags |= CODEC_FLAG_REPEAT_FIELD;
2338         }
2339     }
2340
2341     /* init pts */
2342     for (i = 0; i < nb_input_streams; i++) {
2343         AVStream *st;
2344         ist = &input_streams[i];
2345         st= ist->st;
2346         ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
2347         ist->next_pts = AV_NOPTS_VALUE;
2348         init_pts_correction(&ist->pts_ctx);
2349         ist->is_start = 1;
2350     }
2351
2352     /* set meta data information from input file if required */
2353     for (i=0;i<nb_meta_data_maps;i++) {
2354         AVFormatContext *files[2];
2355         AVMetadata      **meta[2];
2356         int j;
2357
2358 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
2359         if ((index) < 0 || (index) >= (nb_elems)) {\
2360             snprintf(error, sizeof(error), "Invalid %s index %d while processing metadata maps\n",\
2361                      (desc), (index));\
2362             ret = AVERROR(EINVAL);\
2363             goto dump_format;\
2364         }
2365
2366         int out_file_index = meta_data_maps[i][0].file;
2367         int in_file_index = meta_data_maps[i][1].file;
2368         if (in_file_index < 0 || out_file_index < 0)
2369             continue;
2370         METADATA_CHECK_INDEX(out_file_index, nb_output_files, "output file")
2371         METADATA_CHECK_INDEX(in_file_index, nb_input_files, "input file")
2372
2373         files[0] = output_files[out_file_index];
2374         files[1] = input_files[in_file_index].ctx;
2375
2376         for (j = 0; j < 2; j++) {
2377             AVMetaDataMap *map = &meta_data_maps[i][j];
2378
2379             switch (map->type) {
2380             case 'g':
2381                 meta[j] = &files[j]->metadata;
2382                 break;
2383             case 's':
2384                 METADATA_CHECK_INDEX(map->index, files[j]->nb_streams, "stream")
2385                 meta[j] = &files[j]->streams[map->index]->metadata;
2386                 break;
2387             case 'c':
2388                 METADATA_CHECK_INDEX(map->index, files[j]->nb_chapters, "chapter")
2389                 meta[j] = &files[j]->chapters[map->index]->metadata;
2390                 break;
2391             case 'p':
2392                 METADATA_CHECK_INDEX(map->index, files[j]->nb_programs, "program")
2393                 meta[j] = &files[j]->programs[map->index]->metadata;
2394                 break;
2395             }
2396         }
2397
2398         av_metadata_copy(meta[0], *meta[1], AV_METADATA_DONT_OVERWRITE);
2399     }
2400
2401     /* copy global metadata by default */
2402     if (metadata_global_autocopy) {
2403
2404         for (i = 0; i < nb_output_files; i++)
2405             av_metadata_copy(&output_files[i]->metadata, input_files[0].ctx->metadata,
2406                              AV_METADATA_DONT_OVERWRITE);
2407     }
2408
2409     /* copy chapters according to chapter maps */
2410     for (i = 0; i < nb_chapter_maps; i++) {
2411         int infile  = chapter_maps[i].in_file;
2412         int outfile = chapter_maps[i].out_file;
2413
2414         if (infile < 0 || outfile < 0)
2415             continue;
2416         if (infile >= nb_input_files) {
2417             snprintf(error, sizeof(error), "Invalid input file index %d in chapter mapping.\n", infile);
2418             ret = AVERROR(EINVAL);
2419             goto dump_format;
2420         }
2421         if (outfile >= nb_output_files) {
2422             snprintf(error, sizeof(error), "Invalid output file index %d in chapter mapping.\n",outfile);
2423             ret = AVERROR(EINVAL);
2424             goto dump_format;
2425         }
2426         copy_chapters(infile, outfile);
2427     }
2428
2429     /* copy chapters from the first input file that has them*/
2430     if (!nb_chapter_maps)
2431         for (i = 0; i < nb_input_files; i++) {
2432             if (!input_files[i].ctx->nb_chapters)
2433                 continue;
2434
2435             for (j = 0; j < nb_output_files; j++)
2436                 if ((ret = copy_chapters(i, j)) < 0)
2437                     goto dump_format;
2438             break;
2439         }
2440
2441     /* open files and write file headers */
2442     for(i=0;i<nb_output_files;i++) {
2443         os = output_files[i];
2444         if (av_write_header(os) < 0) {
2445             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2446             ret = AVERROR(EINVAL);
2447             goto dump_format;
2448         }
2449         if (strcmp(output_files[i]->oformat->name, "rtp")) {
2450             want_sdp = 0;
2451         }
2452     }
2453
2454  dump_format:
2455     /* dump the file output parameters - cannot be done before in case
2456        of stream copy */
2457     for(i=0;i<nb_output_files;i++) {
2458         av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2459     }
2460
2461     /* dump the stream mapping */
2462     if (verbose >= 0) {
2463         fprintf(stderr, "Stream mapping:\n");
2464         for(i=0;i<nb_ostreams;i++) {
2465             ost = ost_table[i];
2466             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2467                     input_streams[ost->source_index].file_index,
2468                     input_streams[ost->source_index].st->index,
2469                     ost->file_index,
2470                     ost->index);
2471             if (ost->sync_ist != &input_streams[ost->source_index])
2472                 fprintf(stderr, " [sync #%d.%d]",
2473                         ost->sync_ist->file_index,
2474                         ost->sync_ist->st->index);
2475             fprintf(stderr, "\n");
2476         }
2477     }
2478
2479     if (ret) {
2480         fprintf(stderr, "%s\n", error);
2481         goto fail;
2482     }
2483
2484     if (want_sdp) {
2485         print_sdp(output_files, nb_output_files);
2486     }
2487
2488     if (verbose >= 0)
2489         fprintf(stderr, "Press ctrl-c to stop encoding\n");
2490     term_init();
2491
2492     timer_start = av_gettime();
2493
2494     for(; received_sigterm == 0;) {
2495         int file_index, ist_index;
2496         AVPacket pkt;
2497         double ipts_min;
2498         double opts_min;
2499
2500     redo:
2501         ipts_min= 1e100;
2502         opts_min= 1e100;
2503
2504         /* select the stream that we must read now by looking at the
2505            smallest output pts */
2506         file_index = -1;
2507         for(i=0;i<nb_ostreams;i++) {
2508             double ipts, opts;
2509             ost = ost_table[i];
2510             os = output_files[ost->file_index];
2511             ist = &input_streams[ost->source_index];
2512             if(ist->is_past_recording_time || no_packet[ist->file_index])
2513                 continue;
2514                 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2515             ipts = (double)ist->pts;
2516             if (!input_files[ist->file_index].eof_reached){
2517                 if(ipts < ipts_min) {
2518                     ipts_min = ipts;
2519                     if(input_sync ) file_index = ist->file_index;
2520                 }
2521                 if(opts < opts_min) {
2522                     opts_min = opts;
2523                     if(!input_sync) file_index = ist->file_index;
2524                 }
2525             }
2526             if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
2527                 file_index= -1;
2528                 break;
2529             }
2530         }
2531         /* if none, if is finished */
2532         if (file_index < 0) {
2533             if(no_packet_count){
2534                 no_packet_count=0;
2535                 memset(no_packet, 0, sizeof(no_packet));
2536                 usleep(10000);
2537                 continue;
2538             }
2539             break;
2540         }
2541
2542         /* finish if limit size exhausted */
2543         if (limit_filesize != 0 && limit_filesize <= avio_tell(output_files[0]->pb))
2544             break;
2545
2546         /* read a frame from it and output it in the fifo */
2547         is = input_files[file_index].ctx;
2548         ret= av_read_frame(is, &pkt);
2549         if(ret == AVERROR(EAGAIN)){
2550             no_packet[file_index]=1;
2551             no_packet_count++;
2552             continue;
2553         }
2554         if (ret < 0) {
2555             input_files[file_index].eof_reached = 1;
2556             if (opt_shortest)
2557                 break;
2558             else
2559                 continue;
2560         }
2561
2562         no_packet_count=0;
2563         memset(no_packet, 0, sizeof(no_packet));
2564
2565         if (do_pkt_dump) {
2566             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2567                              is->streams[pkt.stream_index]);
2568         }
2569         /* the following test is needed in case new streams appear
2570            dynamically in stream : we ignore them */
2571         if (pkt.stream_index >= input_files[file_index].ctx->nb_streams)
2572             goto discard_packet;
2573         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2574         ist = &input_streams[ist_index];
2575         if (ist->discard)
2576             goto discard_packet;
2577
2578         if (pkt.dts != AV_NOPTS_VALUE)
2579             pkt.dts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2580         if (pkt.pts != AV_NOPTS_VALUE)
2581             pkt.pts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2582
2583         if (pkt.stream_index < nb_input_files_ts_scale[file_index]
2584             && input_files_ts_scale[file_index][pkt.stream_index]){
2585             if(pkt.pts != AV_NOPTS_VALUE)
2586                 pkt.pts *= input_files_ts_scale[file_index][pkt.stream_index];
2587             if(pkt.dts != AV_NOPTS_VALUE)
2588                 pkt.dts *= input_files_ts_scale[file_index][pkt.stream_index];
2589         }
2590
2591 //        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);
2592         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2593             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2594             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2595             int64_t delta= pkt_dts - ist->next_pts;
2596             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2597                 input_files_ts_offset[ist->file_index]-= delta;
2598                 if (verbose > 2)
2599                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n", delta, input_files_ts_offset[ist->file_index]);
2600                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2601                 if(pkt.pts != AV_NOPTS_VALUE)
2602                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2603             }
2604         }
2605
2606         /* finish if recording time exhausted */
2607         if (recording_time != INT64_MAX &&
2608             av_compare_ts(pkt.pts, ist->st->time_base, recording_time + start_time, (AVRational){1, 1000000}) >= 0) {
2609             ist->is_past_recording_time = 1;
2610             goto discard_packet;
2611         }
2612
2613         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2614         if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
2615
2616             if (verbose >= 0)
2617                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2618                         ist->file_index, ist->st->index);
2619             if (exit_on_error)
2620                 ffmpeg_exit(1);
2621             av_free_packet(&pkt);
2622             goto redo;
2623         }
2624
2625     discard_packet:
2626         av_free_packet(&pkt);
2627
2628         /* dump report by using the output first video and audio streams */
2629         print_report(output_files, ost_table, nb_ostreams, 0);
2630     }
2631
2632     /* at the end of stream, we must flush the decoder buffers */
2633     for (i = 0; i < nb_input_streams; i++) {
2634         ist = &input_streams[i];
2635         if (ist->decoding_needed) {
2636             output_packet(ist, i, ost_table, nb_ostreams, NULL);
2637         }
2638     }
2639
2640     term_exit();
2641
2642     /* write the trailer if needed and close file */
2643     for(i=0;i<nb_output_files;i++) {
2644         os = output_files[i];
2645         av_write_trailer(os);
2646     }
2647
2648     /* dump report by using the first video and audio streams */
2649     print_report(output_files, ost_table, nb_ostreams, 1);
2650
2651     /* close each encoder */
2652     for(i=0;i<nb_ostreams;i++) {
2653         ost = ost_table[i];
2654         if (ost->encoding_needed) {
2655             av_freep(&ost->st->codec->stats_in);
2656             avcodec_close(ost->st->codec);
2657         }
2658 #if CONFIG_AVFILTER
2659         avfilter_graph_free(&ost->graph);
2660 #endif
2661     }
2662
2663     /* close each decoder */
2664     for (i = 0; i < nb_input_streams; i++) {
2665         ist = &input_streams[i];
2666         if (ist->decoding_needed) {
2667             avcodec_close(ist->st->codec);
2668         }
2669     }
2670
2671     /* finished ! */
2672     ret = 0;
2673
2674  fail:
2675     av_freep(&bit_buffer);
2676
2677     if (ost_table) {
2678         for(i=0;i<nb_ostreams;i++) {
2679             ost = ost_table[i];
2680             if (ost) {
2681                 if (ost->st->stream_copy)
2682                     av_freep(&ost->st->codec->extradata);
2683                 if (ost->logfile) {
2684                     fclose(ost->logfile);
2685                     ost->logfile = NULL;
2686                 }
2687                 av_fifo_free(ost->fifo); /* works even if fifo is not
2688                                              initialized but set to zero */
2689                 av_freep(&ost->st->codec->subtitle_header);
2690                 av_free(ost->pict_tmp.data[0]);
2691                 av_free(ost->forced_kf_pts);
2692                 if (ost->video_resample)
2693                     sws_freeContext(ost->img_resample_ctx);
2694                 if (ost->resample)
2695                     audio_resample_close(ost->resample);
2696                 if (ost->reformat_ctx)
2697                     av_audio_convert_free(ost->reformat_ctx);
2698                 av_free(ost);
2699             }
2700         }
2701         av_free(ost_table);
2702     }
2703     return ret;
2704 }
2705
2706 static int opt_format(const char *opt, const char *arg)
2707 {
2708     last_asked_format = arg;
2709     return 0;
2710 }
2711
2712 static int opt_video_rc_override_string(const char *opt, const char *arg)
2713 {
2714     video_rc_override_string = arg;
2715     return 0;
2716 }
2717
2718 static int opt_me_threshold(const char *opt, const char *arg)
2719 {
2720     me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2721     return 0;
2722 }
2723
2724 static int opt_verbose(const char *opt, const char *arg)
2725 {
2726     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2727     return 0;
2728 }
2729
2730 static int opt_frame_rate(const char *opt, const char *arg)
2731 {
2732     if (av_parse_video_rate(&frame_rate, arg) < 0) {
2733         fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2734         ffmpeg_exit(1);
2735     }
2736     return 0;
2737 }
2738
2739 static int opt_bitrate(const char *opt, const char *arg)
2740 {
2741     int codec_type = opt[0]=='a' ? AVMEDIA_TYPE_AUDIO : AVMEDIA_TYPE_VIDEO;
2742
2743     opt_default(opt, arg);
2744
2745     if (av_get_int(avcodec_opts[codec_type], "b", NULL) < 1000)
2746         fprintf(stderr, "WARNING: The bitrate parameter is set too low. It takes bits/s as argument, not kbits/s\n");
2747
2748     return 0;
2749 }
2750
2751 static int opt_frame_crop(const char *opt, const char *arg)
2752 {
2753     fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
2754     return AVERROR(EINVAL);
2755 }
2756
2757 static int opt_frame_size(const char *opt, const char *arg)
2758 {
2759     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2760         fprintf(stderr, "Incorrect frame size\n");
2761         return AVERROR(EINVAL);
2762     }
2763     return 0;
2764 }
2765
2766 static int opt_pad(const char *opt, const char *arg) {
2767     fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2768     return -1;
2769 }
2770
2771 static int opt_frame_pix_fmt(const char *opt, const char *arg)
2772 {
2773     if (strcmp(arg, "list")) {
2774         frame_pix_fmt = av_get_pix_fmt(arg);
2775         if (frame_pix_fmt == PIX_FMT_NONE) {
2776             fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2777             return AVERROR(EINVAL);
2778         }
2779     } else {
2780         show_pix_fmts();
2781         ffmpeg_exit(0);
2782     }
2783     return 0;
2784 }
2785
2786 static int opt_frame_aspect_ratio(const char *opt, const char *arg)
2787 {
2788     int x = 0, y = 0;
2789     double ar = 0;
2790     const char *p;
2791     char *end;
2792
2793     p = strchr(arg, ':');
2794     if (p) {
2795         x = strtol(arg, &end, 10);
2796         if (end == p)
2797             y = strtol(end+1, &end, 10);
2798         if (x > 0 && y > 0)
2799             ar = (double)x / (double)y;
2800     } else
2801         ar = strtod(arg, NULL);
2802
2803     if (!ar) {
2804         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2805         return AVERROR(EINVAL);
2806     }
2807     frame_aspect_ratio = ar;
2808     return 0;
2809 }
2810
2811 static int opt_metadata(const char *opt, const char *arg)
2812 {
2813     char *mid= strchr(arg, '=');
2814
2815     if(!mid){
2816         fprintf(stderr, "Missing =\n");
2817         ffmpeg_exit(1);
2818     }
2819     *mid++= 0;
2820
2821     av_metadata_set2(&metadata, arg, mid, 0);
2822
2823     return 0;
2824 }
2825
2826 static int opt_qscale(const char *opt, const char *arg)
2827 {
2828     video_qscale = parse_number_or_die(opt, arg, OPT_FLOAT, 0, 255);
2829     if (video_qscale == 0) {
2830         fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2831         return AVERROR(EINVAL);
2832     }
2833     return 0;
2834 }
2835
2836 static int opt_top_field_first(const char *opt, const char *arg)
2837 {
2838     top_field_first = parse_number_or_die(opt, arg, OPT_INT, 0, 1);
2839     return 0;
2840 }
2841
2842 static int opt_thread_count(const char *opt, const char *arg)
2843 {
2844     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2845 #if !HAVE_THREADS
2846     if (verbose >= 0)
2847         fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2848 #endif
2849     return 0;
2850 }
2851
2852 static int opt_audio_sample_fmt(const char *opt, const char *arg)
2853 {
2854     if (strcmp(arg, "list")) {
2855         audio_sample_fmt = av_get_sample_fmt(arg);
2856         if (audio_sample_fmt == AV_SAMPLE_FMT_NONE) {
2857             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg);
2858             return AVERROR(EINVAL);
2859         }
2860     } else {
2861         int i;
2862         char fmt_str[128];
2863         for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
2864             printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
2865         ffmpeg_exit(0);
2866     }
2867     return 0;
2868 }
2869
2870 static int opt_audio_rate(const char *opt, const char *arg)
2871 {
2872     audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2873     return 0;
2874 }
2875
2876 static int opt_audio_channels(const char *opt, const char *arg)
2877 {
2878     audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2879     return 0;
2880 }
2881
2882 static int opt_video_channel(const char *opt, const char *arg)
2883 {
2884     video_channel = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2885     return 0;
2886 }
2887
2888 static int opt_video_standard(const char *opt, const char *arg)
2889 {
2890     video_standard = av_strdup(arg);
2891     return 0;
2892 }
2893
2894 static int opt_codec(int *pstream_copy, char **pcodec_name,
2895                       int codec_type, const char *arg)
2896 {
2897     av_freep(pcodec_name);
2898     if (!strcmp(arg, "copy")) {
2899         *pstream_copy = 1;
2900     } else {
2901         *pcodec_name = av_strdup(arg);
2902     }
2903     return 0;
2904 }
2905
2906 static int opt_audio_codec(const char *opt, const char *arg)
2907 {
2908     return opt_codec(&audio_stream_copy, &audio_codec_name, AVMEDIA_TYPE_AUDIO, arg);
2909 }
2910
2911 static int opt_video_codec(const char *opt, const char *arg)
2912 {
2913     return opt_codec(&video_stream_copy, &video_codec_name, AVMEDIA_TYPE_VIDEO, arg);
2914 }
2915
2916 static int opt_subtitle_codec(const char *opt, const char *arg)
2917 {
2918     return opt_codec(&subtitle_stream_copy, &subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, arg);
2919 }
2920
2921 static int opt_data_codec(const char *opt, const char *arg)
2922 {
2923     return opt_codec(&data_stream_copy, &data_codec_name, AVMEDIA_TYPE_DATA, arg);
2924 }
2925
2926 static int opt_codec_tag(const char *opt, const char *arg)
2927 {
2928     char *tail;
2929     uint32_t *codec_tag;
2930
2931     codec_tag = !strcmp(opt, "atag") ? &audio_codec_tag :
2932                 !strcmp(opt, "vtag") ? &video_codec_tag :
2933                 !strcmp(opt, "stag") ? &subtitle_codec_tag : NULL;
2934     if (!codec_tag)
2935         return -1;
2936
2937     *codec_tag = strtol(arg, &tail, 0);
2938     if (!tail || *tail)
2939         *codec_tag = AV_RL32(arg);
2940
2941     return 0;
2942 }
2943
2944 static int opt_map(const char *opt, const char *arg)
2945 {
2946     AVStreamMap *m;
2947     char *p;
2948
2949     stream_maps = grow_array(stream_maps, sizeof(*stream_maps), &nb_stream_maps, nb_stream_maps + 1);
2950     m = &stream_maps[nb_stream_maps-1];
2951
2952     m->file_index = strtol(arg, &p, 0);
2953     if (*p)
2954         p++;
2955
2956     m->stream_index = strtol(p, &p, 0);
2957     if (*p) {
2958         p++;
2959         m->sync_file_index = strtol(p, &p, 0);
2960         if (*p)
2961             p++;
2962         m->sync_stream_index = strtol(p, &p, 0);
2963     } else {
2964         m->sync_file_index = m->file_index;
2965         m->sync_stream_index = m->stream_index;
2966     }
2967     return 0;
2968 }
2969
2970 static void parse_meta_type(char *arg, char *type, int *index, char **endptr)
2971 {
2972     *endptr = arg;
2973     if (*arg == ',') {
2974         *type = *(++arg);
2975         switch (*arg) {
2976         case 'g':
2977             break;
2978         case 's':
2979         case 'c':
2980         case 'p':
2981             *index = strtol(++arg, endptr, 0);
2982             break;
2983         default:
2984             fprintf(stderr, "Invalid metadata type %c.\n", *arg);
2985             ffmpeg_exit(1);
2986         }
2987     } else
2988         *type = 'g';
2989 }
2990
2991 static int opt_map_metadata(const char *opt, const char *arg)
2992 {
2993     AVMetaDataMap *m, *m1;
2994     char *p;
2995
2996     meta_data_maps = grow_array(meta_data_maps, sizeof(*meta_data_maps),
2997                                 &nb_meta_data_maps, nb_meta_data_maps + 1);
2998
2999     m = &meta_data_maps[nb_meta_data_maps - 1][0];
3000     m->file = strtol(arg, &p, 0);
3001     parse_meta_type(p, &m->type, &m->index, &p);
3002     if (*p)
3003         p++;
3004
3005     m1 = &meta_data_maps[nb_meta_data_maps - 1][1];
3006     m1->file = strtol(p, &p, 0);
3007     parse_meta_type(p, &m1->type, &m1->index, &p);
3008
3009     if (m->type == 'g' || m1->type == 'g')
3010         metadata_global_autocopy = 0;
3011     if (m->type == 's' || m1->type == 's')
3012         metadata_streams_autocopy = 0;
3013     if (m->type == 'c' || m1->type == 'c')
3014         metadata_chapters_autocopy = 0;
3015
3016     return 0;
3017 }
3018
3019 static int opt_map_meta_data(const char *opt, const char *arg)
3020 {
3021     fprintf(stderr, "-map_meta_data is deprecated and will be removed soon. "
3022                     "Use -map_metadata instead.\n");
3023     return opt_map_metadata(opt, arg);
3024 }
3025
3026 static int opt_map_chapters(const char *opt, const char *arg)
3027 {
3028     AVChapterMap *c;
3029     char *p;
3030
3031     chapter_maps = grow_array(chapter_maps, sizeof(*chapter_maps), &nb_chapter_maps,
3032                               nb_chapter_maps + 1);
3033     c = &chapter_maps[nb_chapter_maps - 1];
3034     c->out_file = strtol(arg, &p, 0);
3035     if (*p)
3036         p++;
3037
3038     c->in_file = strtol(p, &p, 0);
3039     return 0;
3040 }
3041
3042 static int opt_input_ts_scale(const char *opt, const char *arg)
3043 {
3044     unsigned int stream;
3045     double scale;
3046     char *p;
3047
3048     stream = strtol(arg, &p, 0);
3049     if (*p)
3050         p++;
3051     scale= strtod(p, &p);
3052
3053     if(stream >= MAX_STREAMS)
3054         ffmpeg_exit(1);
3055
3056     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);
3057     input_files_ts_scale[nb_input_files][stream]= scale;
3058     return 0;
3059 }
3060
3061 static int opt_recording_time(const char *opt, const char *arg)
3062 {
3063     recording_time = parse_time_or_die(opt, arg, 1);
3064     return 0;
3065 }
3066
3067 static int opt_start_time(const char *opt, const char *arg)
3068 {
3069     start_time = parse_time_or_die(opt, arg, 1);
3070     return 0;
3071 }
3072
3073 static int opt_recording_timestamp(const char *opt, const char *arg)
3074 {
3075     recording_timestamp = parse_time_or_die(opt, arg, 0) / 1000000;
3076     return 0;
3077 }
3078
3079 static int opt_input_ts_offset(const char *opt, const char *arg)
3080 {
3081     input_ts_offset = parse_time_or_die(opt, arg, 1);
3082     return 0;
3083 }
3084
3085 static enum CodecID find_codec_or_die(const char *name, int type, int encoder, int strict)
3086 {
3087     const char *codec_string = encoder ? "encoder" : "decoder";
3088     AVCodec *codec;
3089
3090     if(!name)
3091         return CODEC_ID_NONE;
3092     codec = encoder ?
3093         avcodec_find_encoder_by_name(name) :
3094         avcodec_find_decoder_by_name(name);
3095     if(!codec) {
3096         fprintf(stderr, "Unknown %s '%s'\n", codec_string, name);
3097         ffmpeg_exit(1);
3098     }
3099     if(codec->type != type) {
3100         fprintf(stderr, "Invalid %s type '%s'\n", codec_string, name);
3101         ffmpeg_exit(1);
3102     }
3103     if(codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
3104        strict > FF_COMPLIANCE_EXPERIMENTAL) {
3105         fprintf(stderr, "%s '%s' is experimental and might produce bad "
3106                 "results.\nAdd '-strict experimental' if you want to use it.\n",
3107                 codec_string, codec->name);
3108         codec = encoder ?
3109             avcodec_find_encoder(codec->id) :
3110             avcodec_find_decoder(codec->id);
3111         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
3112             fprintf(stderr, "Or use the non experimental %s '%s'.\n",
3113                     codec_string, codec->name);
3114         ffmpeg_exit(1);
3115     }
3116     return codec->id;
3117 }
3118
3119 static int opt_input_file(const char *opt, const char *filename)
3120 {
3121     AVFormatContext *ic;
3122     AVFormatParameters params, *ap = &params;
3123     AVInputFormat *file_iformat = NULL;
3124     int err, i, ret, rfps, rfps_base;
3125     int64_t timestamp;
3126
3127     if (last_asked_format) {
3128         if (!(file_iformat = av_find_input_format(last_asked_format))) {
3129             fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
3130             ffmpeg_exit(1);
3131         }
3132         last_asked_format = NULL;
3133     }
3134
3135     if (!strcmp(filename, "-"))
3136         filename = "pipe:";
3137
3138     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3139                     !strcmp(filename, "/dev/stdin");
3140
3141     /* get default parameters from command line */
3142     ic = avformat_alloc_context();
3143     if (!ic) {
3144         print_error(filename, AVERROR(ENOMEM));
3145         ffmpeg_exit(1);
3146     }
3147
3148     memset(ap, 0, sizeof(*ap));
3149     ap->prealloced_context = 1;
3150     ap->sample_rate = audio_sample_rate;
3151     ap->channels = audio_channels;
3152     ap->time_base.den = frame_rate.num;
3153     ap->time_base.num = frame_rate.den;
3154     ap->width = frame_width;
3155     ap->height = frame_height;
3156     ap->pix_fmt = frame_pix_fmt;
3157    // ap->sample_fmt = audio_sample_fmt; //FIXME:not implemented in libavformat
3158     ap->channel = video_channel;
3159     ap->standard = video_standard;
3160
3161     set_context_opts(ic, avformat_opts, AV_OPT_FLAG_DECODING_PARAM, NULL);
3162
3163     ic->video_codec_id   =
3164         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0,
3165                           avcodec_opts[AVMEDIA_TYPE_VIDEO   ]->strict_std_compliance);
3166     ic->audio_codec_id   =
3167         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0,
3168                           avcodec_opts[AVMEDIA_TYPE_AUDIO   ]->strict_std_compliance);
3169     ic->subtitle_codec_id=
3170         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0,
3171                           avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->strict_std_compliance);
3172     ic->flags |= AVFMT_FLAG_NONBLOCK;
3173
3174     /* open the input file with generic libav function */
3175     err = av_open_input_file(&ic, filename, file_iformat, 0, ap);
3176     if (err < 0) {
3177         print_error(filename, err);
3178         ffmpeg_exit(1);
3179     }
3180     if(opt_programid) {
3181         int i, j;
3182         int found=0;
3183         for(i=0; i<ic->nb_streams; i++){
3184             ic->streams[i]->discard= AVDISCARD_ALL;
3185         }
3186         for(i=0; i<ic->nb_programs; i++){
3187             AVProgram *p= ic->programs[i];
3188             if(p->id != opt_programid){
3189                 p->discard = AVDISCARD_ALL;
3190             }else{
3191                 found=1;
3192                 for(j=0; j<p->nb_stream_indexes; j++){
3193                     ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
3194                 }
3195             }
3196         }
3197         if(!found){
3198             fprintf(stderr, "Specified program id not found\n");
3199             ffmpeg_exit(1);
3200         }
3201         opt_programid=0;
3202     }
3203
3204     ic->loop_input = loop_input;
3205
3206     /* Set AVCodecContext options so they will be seen by av_find_stream_info() */
3207     for (i = 0; i < ic->nb_streams; i++) {
3208         AVCodecContext *dec = ic->streams[i]->codec;
3209         switch (dec->codec_type) {
3210         case AVMEDIA_TYPE_AUDIO:
3211             set_context_opts(dec, avcodec_opts[AVMEDIA_TYPE_AUDIO],
3212                              AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM,
3213                              NULL);
3214             break;
3215         case AVMEDIA_TYPE_VIDEO:
3216             set_context_opts(dec, avcodec_opts[AVMEDIA_TYPE_VIDEO],
3217                              AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM,
3218                              NULL);
3219             break;
3220         }
3221     }
3222
3223     /* If not enough info to get the stream parameters, we decode the
3224        first frames to get it. (used in mpeg case for example) */
3225     ret = av_find_stream_info(ic);
3226     if (ret < 0 && verbose >= 0) {
3227         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3228         av_close_input_file(ic);
3229         ffmpeg_exit(1);
3230     }
3231
3232     timestamp = start_time;
3233     /* add the stream start time */
3234     if (ic->start_time != AV_NOPTS_VALUE)
3235         timestamp += ic->start_time;
3236
3237     /* if seeking requested, we execute it */
3238     if (start_time != 0) {
3239         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3240         if (ret < 0) {
3241             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3242                     filename, (double)timestamp / AV_TIME_BASE);
3243         }
3244         /* reset seek info */
3245         start_time = 0;
3246     }
3247
3248     /* update the current parameters so that they match the one of the input stream */
3249     for(i=0;i<ic->nb_streams;i++) {
3250         AVStream *st = ic->streams[i];
3251         AVCodecContext *dec = st->codec;
3252         AVInputStream *ist;
3253
3254         dec->thread_count = thread_count;
3255         input_codecs = grow_array(input_codecs, sizeof(*input_codecs), &nb_input_codecs, nb_input_codecs + 1);
3256
3257         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3258         ist = &input_streams[nb_input_streams - 1];
3259         ist->st = st;
3260         ist->file_index = nb_input_files;
3261         ist->discard = 1;
3262
3263         switch (dec->codec_type) {
3264         case AVMEDIA_TYPE_AUDIO:
3265             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(audio_codec_name);
3266             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]);
3267             channel_layout    = dec->channel_layout;
3268             audio_channels    = dec->channels;
3269             audio_sample_rate = dec->sample_rate;
3270             audio_sample_fmt  = dec->sample_fmt;
3271             if(audio_disable)
3272                 st->discard= AVDISCARD_ALL;
3273             /* Note that av_find_stream_info can add more streams, and we
3274              * currently have no chance of setting up lowres decoding
3275              * early enough for them. */
3276             if (dec->lowres)
3277                 audio_sample_rate >>= dec->lowres;
3278             break;
3279         case AVMEDIA_TYPE_VIDEO:
3280             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(video_codec_name);
3281             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]);
3282             frame_height = dec->height;
3283             frame_width  = dec->width;
3284             frame_pix_fmt = dec->pix_fmt;
3285             rfps      = ic->streams[i]->r_frame_rate.num;
3286             rfps_base = ic->streams[i]->r_frame_rate.den;
3287             if (dec->lowres) {
3288                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3289                 frame_height >>= dec->lowres;
3290                 frame_width  >>= dec->lowres;
3291                 dec->height = frame_height;
3292                 dec->width  = frame_width;
3293             }
3294             if(me_threshold)
3295                 dec->debug |= FF_DEBUG_MV;
3296
3297             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3298
3299                 if (verbose >= 0)
3300                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3301                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3302
3303                     (float)rfps / rfps_base, rfps, rfps_base);
3304             }
3305             /* update the current frame rate to match the stream frame rate */
3306             frame_rate.num = rfps;
3307             frame_rate.den = rfps_base;
3308
3309             if(video_disable)
3310                 st->discard= AVDISCARD_ALL;
3311             else if(video_discard)
3312                 st->discard= video_discard;
3313             break;
3314         case AVMEDIA_TYPE_DATA:
3315             break;
3316         case AVMEDIA_TYPE_SUBTITLE:
3317             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(subtitle_codec_name);
3318             if(subtitle_disable)
3319                 st->discard = AVDISCARD_ALL;
3320             break;
3321         case AVMEDIA_TYPE_ATTACHMENT:
3322         case AVMEDIA_TYPE_UNKNOWN:
3323             break;
3324         default:
3325             abort();
3326         }
3327     }
3328
3329     input_files_ts_offset[nb_input_files] = input_ts_offset - (copy_ts ? 0 : timestamp);
3330     /* dump the file content */
3331     if (verbose >= 0)
3332         av_dump_format(ic, nb_input_files, filename, 0);
3333
3334     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3335     input_files[nb_input_files - 1].ctx        = ic;
3336     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3337
3338     video_channel = 0;
3339
3340     av_freep(&video_codec_name);
3341     av_freep(&audio_codec_name);
3342     av_freep(&subtitle_codec_name);
3343     uninit_opts();
3344     init_opts();
3345     return 0;
3346 }
3347
3348 static void check_inputs(int *has_video_ptr,
3349                          int *has_audio_ptr,
3350                          int *has_subtitle_ptr,
3351                          int *has_data_ptr)
3352 {
3353     int has_video, has_audio, has_subtitle, has_data, i, j;
3354     AVFormatContext *ic;
3355
3356     has_video = 0;
3357     has_audio = 0;
3358     has_subtitle = 0;
3359     has_data = 0;
3360
3361     for(j=0;j<nb_input_files;j++) {
3362         ic = input_files[j].ctx;
3363         for(i=0;i<ic->nb_streams;i++) {
3364             AVCodecContext *enc = ic->streams[i]->codec;
3365             switch(enc->codec_type) {
3366             case AVMEDIA_TYPE_AUDIO:
3367                 has_audio = 1;
3368                 break;
3369             case AVMEDIA_TYPE_VIDEO:
3370                 has_video = 1;
3371                 break;
3372             case AVMEDIA_TYPE_SUBTITLE:
3373                 has_subtitle = 1;
3374                 break;
3375             case AVMEDIA_TYPE_DATA:
3376             case AVMEDIA_TYPE_ATTACHMENT:
3377             case AVMEDIA_TYPE_UNKNOWN:
3378                 has_data = 1;
3379                 break;
3380             default:
3381                 abort();
3382             }
3383         }
3384     }
3385     *has_video_ptr = has_video;
3386     *has_audio_ptr = has_audio;
3387     *has_subtitle_ptr = has_subtitle;
3388     *has_data_ptr = has_data;
3389 }
3390
3391 static void new_video_stream(AVFormatContext *oc, int file_idx)
3392 {
3393     AVStream *st;
3394     AVOutputStream *ost;
3395     AVCodecContext *video_enc;
3396     enum CodecID codec_id = CODEC_ID_NONE;
3397     AVCodec *codec= NULL;
3398
3399     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3400     if (!st) {
3401         fprintf(stderr, "Could not alloc stream\n");
3402         ffmpeg_exit(1);
3403     }
3404     ost = new_output_stream(oc, file_idx);
3405
3406     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3407     if(!video_stream_copy){
3408         if (video_codec_name) {
3409             codec_id = find_codec_or_die(video_codec_name, AVMEDIA_TYPE_VIDEO, 1,
3410                                          avcodec_opts[AVMEDIA_TYPE_VIDEO]->strict_std_compliance);
3411             codec = avcodec_find_encoder_by_name(video_codec_name);
3412             output_codecs[nb_output_codecs-1] = codec;
3413         } else {
3414             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_VIDEO);
3415             codec = avcodec_find_encoder(codec_id);
3416         }
3417
3418         ost->frame_aspect_ratio = frame_aspect_ratio;
3419         frame_aspect_ratio = 0;
3420 #if CONFIG_AVFILTER
3421         ost->avfilter= vfilters;
3422         vfilters = NULL;
3423 #endif
3424     }
3425
3426     avcodec_get_context_defaults3(st->codec, codec);
3427     ost->bitstream_filters = video_bitstream_filters;
3428     video_bitstream_filters= NULL;
3429
3430     st->codec->thread_count= thread_count;
3431
3432     video_enc = st->codec;
3433
3434     if(video_codec_tag)
3435         video_enc->codec_tag= video_codec_tag;
3436
3437     if(oc->oformat->flags & AVFMT_GLOBALHEADER) {
3438         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3439         avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3440     }
3441
3442     if (video_stream_copy) {
3443         st->stream_copy = 1;
3444         video_enc->codec_type = AVMEDIA_TYPE_VIDEO;
3445         video_enc->sample_aspect_ratio =
3446         st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3447     } else {
3448         const char *p;
3449         int i;
3450         AVRational fps= frame_rate.num ? frame_rate : (AVRational){25,1};
3451
3452         video_enc->codec_id = codec_id;
3453         set_context_opts(video_enc, avcodec_opts[AVMEDIA_TYPE_VIDEO], AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3454
3455         if (codec && codec->supported_framerates && !force_fps)
3456             fps = codec->supported_framerates[av_find_nearest_q_idx(fps, codec->supported_framerates)];
3457         video_enc->time_base.den = fps.num;
3458         video_enc->time_base.num = fps.den;
3459
3460         video_enc->width = frame_width;
3461         video_enc->height = frame_height;
3462         video_enc->pix_fmt = frame_pix_fmt;
3463         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3464
3465         choose_pixel_fmt(st, codec);
3466
3467         if (intra_only)
3468             video_enc->gop_size = 0;
3469         if (video_qscale || same_quality) {
3470             video_enc->flags |= CODEC_FLAG_QSCALE;
3471             video_enc->global_quality=
3472                 st->quality = FF_QP2LAMBDA * video_qscale;
3473         }
3474
3475         if(intra_matrix)
3476             video_enc->intra_matrix = intra_matrix;
3477         if(inter_matrix)
3478             video_enc->inter_matrix = inter_matrix;
3479
3480         p= video_rc_override_string;
3481         for(i=0; p; i++){
3482             int start, end, q;
3483             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3484             if(e!=3){
3485                 fprintf(stderr, "error parsing rc_override\n");
3486                 ffmpeg_exit(1);
3487             }
3488             video_enc->rc_override=
3489                 av_realloc(video_enc->rc_override,
3490                            sizeof(RcOverride)*(i+1));
3491             video_enc->rc_override[i].start_frame= start;
3492             video_enc->rc_override[i].end_frame  = end;
3493             if(q>0){
3494                 video_enc->rc_override[i].qscale= q;
3495                 video_enc->rc_override[i].quality_factor= 1.0;
3496             }
3497             else{
3498                 video_enc->rc_override[i].qscale= 0;
3499                 video_enc->rc_override[i].quality_factor= -q/100.0;
3500             }
3501             p= strchr(p, '/');
3502             if(p) p++;
3503         }
3504         video_enc->rc_override_count=i;
3505         if (!video_enc->rc_initial_buffer_occupancy)
3506             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3507         video_enc->me_threshold= me_threshold;
3508         video_enc->intra_dc_precision= intra_dc_precision - 8;
3509
3510         if (do_psnr)
3511             video_enc->flags|= CODEC_FLAG_PSNR;
3512
3513         /* two pass mode */
3514         if (do_pass) {
3515             if (do_pass == 1) {
3516                 video_enc->flags |= CODEC_FLAG_PASS1;
3517             } else {
3518                 video_enc->flags |= CODEC_FLAG_PASS2;
3519             }
3520         }
3521
3522         if (forced_key_frames)
3523             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3524     }
3525     if (video_language) {
3526         av_metadata_set2(&st->metadata, "language", video_language, 0);
3527         av_freep(&video_language);
3528     }
3529
3530     /* reset some key parameters */
3531     video_disable = 0;
3532     av_freep(&video_codec_name);
3533     av_freep(&forced_key_frames);
3534     video_stream_copy = 0;
3535     frame_pix_fmt = PIX_FMT_NONE;
3536 }
3537
3538 static void new_audio_stream(AVFormatContext *oc, int file_idx)
3539 {
3540     AVStream *st;
3541     AVOutputStream *ost;
3542     AVCodec *codec= NULL;
3543     AVCodecContext *audio_enc;
3544     enum CodecID codec_id = CODEC_ID_NONE;
3545
3546     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3547     if (!st) {
3548         fprintf(stderr, "Could not alloc stream\n");
3549         ffmpeg_exit(1);
3550     }
3551     ost = new_output_stream(oc, file_idx);
3552
3553     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3554     if(!audio_stream_copy){
3555         if (audio_codec_name) {
3556             codec_id = find_codec_or_die(audio_codec_name, AVMEDIA_TYPE_AUDIO, 1,
3557                                          avcodec_opts[AVMEDIA_TYPE_AUDIO]->strict_std_compliance);
3558             codec = avcodec_find_encoder_by_name(audio_codec_name);
3559             output_codecs[nb_output_codecs-1] = codec;
3560         } else {
3561             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_AUDIO);
3562             codec = avcodec_find_encoder(codec_id);
3563         }
3564     }
3565
3566     avcodec_get_context_defaults3(st->codec, codec);
3567
3568     ost->bitstream_filters = audio_bitstream_filters;
3569     audio_bitstream_filters= NULL;
3570
3571     st->codec->thread_count= thread_count;
3572
3573     audio_enc = st->codec;
3574     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3575
3576     if(audio_codec_tag)
3577         audio_enc->codec_tag= audio_codec_tag;
3578
3579     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3580         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3581         avcodec_opts[AVMEDIA_TYPE_AUDIO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3582     }
3583     if (audio_stream_copy) {
3584         st->stream_copy = 1;
3585         audio_enc->channels = audio_channels;
3586         audio_enc->sample_rate = audio_sample_rate;
3587     } else {
3588         audio_enc->codec_id = codec_id;
3589         set_context_opts(audio_enc, avcodec_opts[AVMEDIA_TYPE_AUDIO], AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3590
3591         if (audio_qscale > QSCALE_NONE) {
3592             audio_enc->flags |= CODEC_FLAG_QSCALE;
3593             audio_enc->global_quality = st->quality = FF_QP2LAMBDA * audio_qscale;
3594         }
3595         audio_enc->channels = audio_channels;
3596         audio_enc->sample_fmt = audio_sample_fmt;
3597         audio_enc->sample_rate = audio_sample_rate;
3598         audio_enc->channel_layout = channel_layout;
3599         if (av_get_channel_layout_nb_channels(channel_layout) != audio_channels)
3600             audio_enc->channel_layout = 0;
3601         choose_sample_fmt(st, codec);
3602         choose_sample_rate(st, codec);
3603     }
3604     audio_enc->time_base= (AVRational){1, audio_sample_rate};
3605     if (audio_language) {
3606         av_metadata_set2(&st->metadata, "language", audio_language, 0);
3607         av_freep(&audio_language);
3608     }
3609
3610     /* reset some key parameters */
3611     audio_disable = 0;
3612     av_freep(&audio_codec_name);
3613     audio_stream_copy = 0;
3614 }
3615
3616 static void new_data_stream(AVFormatContext *oc, int file_idx)
3617 {
3618     AVStream *st;
3619     AVCodec *codec=NULL;
3620     AVCodecContext *data_enc;
3621
3622     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3623     if (!st) {
3624         fprintf(stderr, "Could not alloc stream\n");
3625         ffmpeg_exit(1);
3626     }
3627     new_output_stream(oc, file_idx);
3628     data_enc = st->codec;
3629     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3630     if (!data_stream_copy) {
3631         fprintf(stderr, "Data stream encoding not supported yet (only streamcopy)\n");
3632         ffmpeg_exit(1);
3633     }
3634     avcodec_get_context_defaults3(st->codec, codec);
3635
3636     data_enc->codec_type = AVMEDIA_TYPE_DATA;
3637
3638     if (data_codec_tag)
3639         data_enc->codec_tag= data_codec_tag;
3640
3641     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3642         data_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3643         avcodec_opts[AVMEDIA_TYPE_DATA]->flags |= CODEC_FLAG_GLOBAL_HEADER;
3644     }
3645     if (data_stream_copy) {
3646         st->stream_copy =&nbs