390785555ac3cef85b10a14c1e8565b9c559d5f0
[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/dict.h"
43 #include "libavutil/mathematics.h"
44 #include "libavutil/pixdesc.h"
45 #include "libavutil/avstring.h"
46 #include "libavutil/libm.h"
47 #include "libavformat/os_support.h"
48
49 #if CONFIG_AVFILTER
50 # include "libavfilter/avfilter.h"
51 # include "libavfilter/avfiltergraph.h"
52 # include "libavfilter/vsrc_buffer.h"
53 #endif
54
55 #if HAVE_SYS_RESOURCE_H
56 #include <sys/types.h>
57 #include <sys/time.h>
58 #include <sys/resource.h>
59 #elif HAVE_GETPROCESSTIMES
60 #include <windows.h>
61 #endif
62 #if HAVE_GETPROCESSMEMORYINFO
63 #include <windows.h>
64 #include <psapi.h>
65 #endif
66
67 #if HAVE_SYS_SELECT_H
68 #include <sys/select.h>
69 #endif
70
71 #include <time.h>
72
73 #include "cmdutils.h"
74
75 #include "libavutil/avassert.h"
76
77 const char program_name[] = "ffmpeg";
78 const int program_birth_year = 2000;
79
80 /* select an input stream for an output stream */
81 typedef struct StreamMap {
82     int file_index;
83     int stream_index;
84     int sync_file_index;
85     int sync_stream_index;
86 } StreamMap;
87
88 /**
89  * select an input file for an output file
90  */
91 typedef struct MetadataMap {
92     int  file;      //< file index
93     char type;      //< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
94     int  index;     //< stream/chapter/program number
95 } MetadataMap;
96
97 typedef struct ChapterMap {
98     int in_file;
99     int out_file;
100 } ChapterMap;
101
102 static const OptionDef options[];
103
104 #define MAX_FILES 100
105 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
106
107 #define FFM_PACKET_SIZE 4096 //XXX a duplicate of the line in ffm.h
108
109 static const char *last_asked_format = NULL;
110 static double *input_files_ts_scale[MAX_FILES] = {NULL};
111 static int nb_input_files_ts_scale[MAX_FILES] = {0};
112
113 static AVFormatContext *output_files[MAX_FILES];
114 static AVDictionary *output_opts[MAX_FILES];
115 static int nb_output_files = 0;
116
117 static StreamMap *stream_maps = NULL;
118 static int nb_stream_maps;
119
120 /* first item specifies output metadata, second is input */
121 static MetadataMap (*meta_data_maps)[2] = NULL;
122 static int nb_meta_data_maps;
123 static int metadata_global_autocopy   = 1;
124 static int metadata_streams_autocopy  = 1;
125 static int metadata_chapters_autocopy = 1;
126
127 static ChapterMap *chapter_maps = NULL;
128 static int nb_chapter_maps;
129
130 /* indexed by output file stream index */
131 static int *streamid_map = NULL;
132 static int nb_streamid_map = 0;
133
134 static int frame_width  = 0;
135 static int frame_height = 0;
136 static float frame_aspect_ratio = 0;
137 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
138 static enum AVSampleFormat audio_sample_fmt = AV_SAMPLE_FMT_NONE;
139 static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
140 static AVRational frame_rate;
141 static float video_qscale = 0;
142 static uint16_t *intra_matrix = NULL;
143 static uint16_t *inter_matrix = NULL;
144 static const char *video_rc_override_string=NULL;
145 static int video_disable = 0;
146 static int video_discard = 0;
147 static char *video_codec_name = NULL;
148 static unsigned int video_codec_tag = 0;
149 static char *video_language = NULL;
150 static int same_quality = 0;
151 static int do_deinterlace = 0;
152 static int top_field_first = -1;
153 static int me_threshold = 0;
154 static int intra_dc_precision = 8;
155 static int loop_input = 0;
156 static int loop_output = AVFMT_NOOUTPUTLOOP;
157 static int qp_hist = 0;
158 #if CONFIG_AVFILTER
159 static char *vfilters = NULL;
160 #endif
161
162 static int intra_only = 0;
163 static int audio_sample_rate = 0;
164 static int64_t channel_layout = 0;
165 #define QSCALE_NONE -99999
166 static float audio_qscale = QSCALE_NONE;
167 static int audio_disable = 0;
168 static int audio_channels = 0;
169 static char  *audio_codec_name = NULL;
170 static unsigned int audio_codec_tag = 0;
171 static char *audio_language = NULL;
172
173 static int subtitle_disable = 0;
174 static char *subtitle_codec_name = NULL;
175 static char *subtitle_language = NULL;
176 static unsigned int subtitle_codec_tag = 0;
177
178 static int data_disable = 0;
179 static char *data_codec_name = NULL;
180 static unsigned int data_codec_tag = 0;
181
182 static float mux_preload= 0.5;
183 static float mux_max_delay= 0.7;
184
185 static int64_t recording_time = INT64_MAX;
186 static int64_t start_time = 0;
187 static int64_t recording_timestamp = 0;
188 static int64_t input_ts_offset = 0;
189 static int file_overwrite = 0;
190 static AVDictionary *metadata;
191 static int do_benchmark = 0;
192 static int do_hex_dump = 0;
193 static int do_pkt_dump = 0;
194 static int do_psnr = 0;
195 static int do_pass = 0;
196 static char *pass_logfilename_prefix = NULL;
197 static int audio_stream_copy = 0;
198 static int video_stream_copy = 0;
199 static int subtitle_stream_copy = 0;
200 static int data_stream_copy = 0;
201 static int video_sync_method= -1;
202 static int audio_sync_method= 0;
203 static float audio_drift_threshold= 0.1;
204 static int copy_ts= 0;
205 static int copy_tb;
206 static int opt_shortest = 0;
207 static char *vstats_filename;
208 static FILE *vstats_file;
209 static int opt_programid = 0;
210 static int copy_initial_nonkeyframes = 0;
211
212 static int rate_emu = 0;
213
214 static int audio_volume = 256;
215
216 static int exit_on_error = 0;
217 static int using_stdin = 0;
218 static int verbose = 1;
219 static int thread_count= 1;
220 static int64_t video_size = 0;
221 static int64_t audio_size = 0;
222 static int64_t extra_size = 0;
223 static int nb_frames_dup = 0;
224 static int nb_frames_drop = 0;
225 static int input_sync;
226 static uint64_t limit_filesize = 0;
227 static int force_fps = 0;
228 static char *forced_key_frames = NULL;
229
230 static float dts_delta_threshold = 10;
231
232 static int64_t timer_start;
233
234 static uint8_t *audio_buf;
235 static uint8_t *audio_out;
236 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
237
238 static short *samples;
239
240 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
241 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
242 static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL;
243
244 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
245
246 struct InputStream;
247
248 typedef struct OutputStream {
249     int file_index;          /* file index */
250     int index;               /* stream index in the output file */
251     int source_index;        /* InputStream index */
252     AVStream *st;            /* stream in the output file */
253     int encoding_needed;     /* true if encoding needed for this stream */
254     int frame_number;
255     /* input pts and corresponding output pts
256        for A/V sync */
257     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
258     struct InputStream *sync_ist; /* input stream to sync against */
259     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
260     AVBitStreamFilterContext *bitstream_filters;
261     AVCodec *enc;
262
263     /* video only */
264     int video_resample;
265     AVFrame pict_tmp;      /* temporary image for resampling */
266     struct SwsContext *img_resample_ctx; /* for image resampling */
267     int resample_height;
268     int resample_width;
269     int resample_pix_fmt;
270     AVRational frame_rate;
271
272     float frame_aspect_ratio;
273
274     /* forced key frames */
275     int64_t *forced_kf_pts;
276     int forced_kf_count;
277     int forced_kf_index;
278
279     /* audio only */
280     int audio_resample;
281     ReSampleContext *resample; /* for audio resampling */
282     int resample_sample_fmt;
283     int resample_channels;
284     int resample_sample_rate;
285     int reformat_pair;
286     AVAudioConvert *reformat_ctx;
287     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
288     FILE *logfile;
289
290 #if CONFIG_AVFILTER
291     AVFilterContext *output_video_filter;
292     AVFilterContext *input_video_filter;
293     AVFilterBufferRef *picref;
294     char *avfilter;
295     AVFilterGraph *graph;
296 #endif
297
298    int sws_flags;
299 } OutputStream;
300
301 static OutputStream **output_streams_for_file[MAX_FILES] = { NULL };
302 static int nb_output_streams_for_file[MAX_FILES] = { 0 };
303
304 typedef struct InputStream {
305     int file_index;
306     AVStream *st;
307     int discard;             /* true if stream data should be discarded */
308     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
309     int64_t sample_index;      /* current sample */
310     AVCodec *dec;
311
312     int64_t       start;     /* time when read started */
313     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
314                                 is not defined */
315     int64_t       pts;       /* current pts */
316     PtsCorrectionContext pts_ctx;
317     int is_start;            /* is 1 at the start and after a discontinuity */
318     int showed_multi_packet_warning;
319     int is_past_recording_time;
320 #if CONFIG_AVFILTER
321     AVFrame *filter_frame;
322     int has_filter_frame;
323 #endif
324 } InputStream;
325
326 typedef struct InputFile {
327     AVFormatContext *ctx;
328     int eof_reached;      /* true if eof reached */
329     int ist_index;        /* index of first stream in ist_table */
330     int buffer_size;      /* current total buffer size */
331     int64_t ts_offset;
332 } InputFile;
333
334 static InputStream *input_streams = NULL;
335 static int         nb_input_streams = 0;
336 static InputFile   *input_files   = NULL;
337 static int         nb_input_files   = 0;
338
339 #if CONFIG_AVFILTER
340
341 static int configure_video_filters(InputStream *ist, OutputStream *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         av_dict_free(&output_opts[i]);
467     }
468     for(i=0;i<nb_input_files;i++) {
469         av_close_input_file(input_files[i].ctx);
470         av_free(input_files_ts_scale[i]);
471     }
472
473     av_free(intra_matrix);
474     av_free(inter_matrix);
475
476     if (vstats_file)
477         fclose(vstats_file);
478     av_free(vstats_filename);
479
480     av_free(streamid_map);
481     av_free(stream_maps);
482     av_free(meta_data_maps);
483
484     av_freep(&input_streams);
485     av_freep(&input_files);
486
487     av_free(video_codec_name);
488     av_free(audio_codec_name);
489     av_free(subtitle_codec_name);
490     av_free(data_codec_name);
491
492     uninit_opts();
493     av_free(audio_buf);
494     av_free(audio_out);
495     allocated_audio_buf_size= allocated_audio_out_size= 0;
496     av_free(samples);
497
498 #if CONFIG_AVFILTER
499     avfilter_uninit();
500 #endif
501
502     if (received_sigterm) {
503         fprintf(stderr,
504             "Received signal %d: terminating.\n",
505             (int) received_sigterm);
506         exit (255);
507     }
508
509     exit(ret); /* not all OS-es handle main() return value */
510     return ret;
511 }
512
513 static void assert_avoptions(AVDictionary *m)
514 {
515     AVDictionaryEntry *t;
516     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
517         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
518         ffmpeg_exit(1);
519     }
520 }
521
522 /* similar to ff_dynarray_add() and av_fast_realloc() */
523 static void *grow_array(void *array, int elem_size, int *size, int new_size)
524 {
525     if (new_size >= INT_MAX / elem_size) {
526         fprintf(stderr, "Array too big.\n");
527         ffmpeg_exit(1);
528     }
529     if (*size < new_size) {
530         uint8_t *tmp = av_realloc(array, new_size*elem_size);
531         if (!tmp) {
532             fprintf(stderr, "Could not alloc buffer.\n");
533             ffmpeg_exit(1);
534         }
535         memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
536         *size = new_size;
537         return tmp;
538     }
539     return array;
540 }
541
542 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
543 {
544     if(codec && codec->sample_fmts){
545         const enum AVSampleFormat *p= codec->sample_fmts;
546         for(; *p!=-1; p++){
547             if(*p == st->codec->sample_fmt)
548                 break;
549         }
550         if (*p == -1) {
551             av_log(NULL, AV_LOG_WARNING,
552                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
553                    av_get_sample_fmt_name(st->codec->sample_fmt),
554                    codec->name,
555                    av_get_sample_fmt_name(codec->sample_fmts[0]));
556             st->codec->sample_fmt = codec->sample_fmts[0];
557         }
558     }
559 }
560
561 /**
562  * Update the requested input sample format based on the output sample format.
563  * This is currently only used to request float output from decoders which
564  * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
565  * Ideally this will be removed in the future when decoders do not do format
566  * conversion and only output in their native format.
567  */
568 static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
569                               AVCodecContext *enc)
570 {
571     /* if sample formats match or a decoder sample format has already been
572        requested, just return */
573     if (enc->sample_fmt == dec->sample_fmt ||
574         dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
575         return;
576
577     /* if decoder supports more than one output format */
578     if (dec_codec && dec_codec->sample_fmts &&
579         dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
580         dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
581         const enum AVSampleFormat *p;
582         int min_dec = -1, min_inc = -1;
583
584         /* find a matching sample format in the encoder */
585         for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
586             if (*p == enc->sample_fmt) {
587                 dec->request_sample_fmt = *p;
588                 return;
589             } else if (*p > enc->sample_fmt) {
590                 min_inc = FFMIN(min_inc, *p - enc->sample_fmt);
591             } else
592                 min_dec = FFMIN(min_dec, enc->sample_fmt - *p);
593         }
594
595         /* if none match, provide the one that matches quality closest */
596         dec->request_sample_fmt = min_inc > 0 ? enc->sample_fmt + min_inc :
597                                   enc->sample_fmt - min_dec;
598     }
599 }
600
601 static void choose_sample_rate(AVStream *st, AVCodec *codec)
602 {
603     if(codec && codec->supported_samplerates){
604         const int *p= codec->supported_samplerates;
605         int best=0;
606         int best_dist=INT_MAX;
607         for(; *p; p++){
608             int dist= abs(st->codec->sample_rate - *p);
609             if(dist < best_dist){
610                 best_dist= dist;
611                 best= *p;
612             }
613         }
614         if(best_dist){
615             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
616         }
617         st->codec->sample_rate= best;
618     }
619 }
620
621 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
622 {
623     if(codec && codec->pix_fmts){
624         const enum PixelFormat *p= codec->pix_fmts;
625         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
626             if(st->codec->codec_id==CODEC_ID_MJPEG){
627                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
628             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
629                 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};
630             }
631         }
632         for(; *p!=-1; p++){
633             if(*p == st->codec->pix_fmt)
634                 break;
635         }
636         if (*p == -1) {
637             if(st->codec->pix_fmt != PIX_FMT_NONE)
638                 av_log(NULL, AV_LOG_WARNING,
639                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
640                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
641                         codec->name,
642                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
643             st->codec->pix_fmt = codec->pix_fmts[0];
644         }
645     }
646 }
647
648 static OutputStream *new_output_stream(AVFormatContext *oc, int file_idx)
649 {
650     int idx = oc->nb_streams - 1;
651     OutputStream *ost;
652
653     output_streams_for_file[file_idx] =
654         grow_array(output_streams_for_file[file_idx],
655                    sizeof(*output_streams_for_file[file_idx]),
656                    &nb_output_streams_for_file[file_idx],
657                    oc->nb_streams);
658     ost = output_streams_for_file[file_idx][idx] =
659         av_mallocz(sizeof(OutputStream));
660     if (!ost) {
661         fprintf(stderr, "Could not alloc output stream\n");
662         ffmpeg_exit(1);
663     }
664     ost->file_index = file_idx;
665     ost->index = idx;
666
667     ost->sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
668     return ost;
669 }
670
671 static int read_ffserver_streams(AVFormatContext *s, const char *filename)
672 {
673     int i, err;
674     AVFormatContext *ic = NULL;
675     int nopts = 0;
676
677     err = avformat_open_input(&ic, filename, NULL, NULL);
678     if (err < 0)
679         return err;
680     /* copy stream format */
681     s->nb_streams = 0;
682     s->streams = av_mallocz(sizeof(AVStream *) * ic->nb_streams);
683     for(i=0;i<ic->nb_streams;i++) {
684         AVStream *st;
685         AVCodec *codec;
686
687         s->nb_streams++;
688
689         // FIXME: a more elegant solution is needed
690         st = av_mallocz(sizeof(AVStream));
691         memcpy(st, ic->streams[i], sizeof(AVStream));
692         st->info = NULL;
693         st->codec = avcodec_alloc_context();
694         if (!st->codec) {
695             print_error(filename, AVERROR(ENOMEM));
696             ffmpeg_exit(1);
697         }
698         avcodec_copy_context(st->codec, ic->streams[i]->codec);
699         s->streams[i] = st;
700
701         codec = avcodec_find_encoder(st->codec->codec_id);
702         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
703             if (audio_stream_copy) {
704                 st->stream_copy = 1;
705             } else
706                 choose_sample_fmt(st, codec);
707         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
708             if (video_stream_copy) {
709                 st->stream_copy = 1;
710             } else
711                 choose_pixel_fmt(st, codec);
712         }
713
714         if(st->codec->flags & CODEC_FLAG_BITEXACT)
715             nopts = 1;
716
717         new_output_stream(s, nb_output_files);
718     }
719
720     if (!nopts)
721         s->timestamp = av_gettime();
722
723     av_close_input_file(ic);
724     return 0;
725 }
726
727 static double
728 get_sync_ipts(const OutputStream *ost)
729 {
730     const InputStream *ist = ost->sync_ist;
731     return (double)(ist->pts - start_time)/AV_TIME_BASE;
732 }
733
734 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
735     int ret;
736
737     while(bsfc){
738         AVPacket new_pkt= *pkt;
739         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
740                                           &new_pkt.data, &new_pkt.size,
741                                           pkt->data, pkt->size,
742                                           pkt->flags & AV_PKT_FLAG_KEY);
743         if(a>0){
744             av_free_packet(pkt);
745             new_pkt.destruct= av_destruct_packet;
746         } else if(a<0){
747             fprintf(stderr, "%s failed for stream %d, codec %s",
748                     bsfc->filter->name, pkt->stream_index,
749                     avctx->codec ? avctx->codec->name : "copy");
750             print_error("", a);
751             if (exit_on_error)
752                 ffmpeg_exit(1);
753         }
754         *pkt= new_pkt;
755
756         bsfc= bsfc->next;
757     }
758
759     ret= av_interleaved_write_frame(s, pkt);
760     if(ret < 0){
761         print_error("av_interleaved_write_frame()", ret);
762         ffmpeg_exit(1);
763     }
764 }
765
766 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
767
768 static void do_audio_out(AVFormatContext *s,
769                          OutputStream *ost,
770                          InputStream *ist,
771                          unsigned char *buf, int size)
772 {
773     uint8_t *buftmp;
774     int64_t audio_out_size, audio_buf_size;
775     int64_t allocated_for_size= size;
776
777     int size_out, frame_bytes, ret, resample_changed;
778     AVCodecContext *enc= ost->st->codec;
779     AVCodecContext *dec= ist->st->codec;
780     int osize = av_get_bytes_per_sample(enc->sample_fmt);
781     int isize = av_get_bytes_per_sample(dec->sample_fmt);
782     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
783
784 need_realloc:
785     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
786     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
787     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
788     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
789     audio_buf_size*= osize*enc->channels;
790
791     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
792     if(coded_bps > 8*osize)
793         audio_out_size= audio_out_size * coded_bps / (8*osize);
794     audio_out_size += FF_MIN_BUFFER_SIZE;
795
796     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
797         fprintf(stderr, "Buffer sizes too large\n");
798         ffmpeg_exit(1);
799     }
800
801     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
802     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
803     if (!audio_buf || !audio_out){
804         fprintf(stderr, "Out of memory in do_audio_out\n");
805         ffmpeg_exit(1);
806     }
807
808     if (enc->channels != dec->channels || enc->sample_rate != dec->sample_rate)
809         ost->audio_resample = 1;
810
811     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
812                        ost->resample_channels    != dec->channels   ||
813                        ost->resample_sample_rate != dec->sample_rate;
814
815     if ((ost->audio_resample && !ost->resample) || resample_changed) {
816         if (resample_changed) {
817             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",
818                    ist->file_index, ist->st->index,
819                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
820                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
821             ost->resample_sample_fmt  = dec->sample_fmt;
822             ost->resample_channels    = dec->channels;
823             ost->resample_sample_rate = dec->sample_rate;
824             if (ost->resample)
825                 audio_resample_close(ost->resample);
826         }
827         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
828         if (audio_sync_method <= 1 &&
829             ost->resample_sample_fmt  == enc->sample_fmt &&
830             ost->resample_channels    == enc->channels   &&
831             ost->resample_sample_rate == enc->sample_rate) {
832             ost->resample = NULL;
833             ost->audio_resample = 0;
834         } else if (ost->audio_resample) {
835             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
836                 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
837             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
838                                                    enc->sample_rate, dec->sample_rate,
839                                                    enc->sample_fmt,  dec->sample_fmt,
840                                                    16, 10, 0, 0.8);
841             if (!ost->resample) {
842                 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
843                         dec->channels, dec->sample_rate,
844                         enc->channels, enc->sample_rate);
845                 ffmpeg_exit(1);
846             }
847         }
848     }
849
850 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
851     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
852         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
853         if (ost->reformat_ctx)
854             av_audio_convert_free(ost->reformat_ctx);
855         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
856                                                    dec->sample_fmt, 1, NULL, 0);
857         if (!ost->reformat_ctx) {
858             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
859                 av_get_sample_fmt_name(dec->sample_fmt),
860                 av_get_sample_fmt_name(enc->sample_fmt));
861             ffmpeg_exit(1);
862         }
863         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
864     }
865
866     if(audio_sync_method){
867         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
868                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
869         double idelta= delta*dec->sample_rate / enc->sample_rate;
870         int byte_delta= ((int)idelta)*2*dec->channels;
871
872         //FIXME resample delay
873         if(fabs(delta) > 50){
874             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
875                 if(byte_delta < 0){
876                     byte_delta= FFMAX(byte_delta, -size);
877                     size += byte_delta;
878                     buf  -= byte_delta;
879                     if(verbose > 2)
880                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
881                     if(!size)
882                         return;
883                     ist->is_start=0;
884                 }else{
885                     static uint8_t *input_tmp= NULL;
886                     input_tmp= av_realloc(input_tmp, byte_delta + size);
887
888                     if(byte_delta > allocated_for_size - size){
889                         allocated_for_size= byte_delta + (int64_t)size;
890                         goto need_realloc;
891                     }
892                     ist->is_start=0;
893
894                     memset(input_tmp, 0, byte_delta);
895                     memcpy(input_tmp + byte_delta, buf, size);
896                     buf= input_tmp;
897                     size += byte_delta;
898                     if(verbose > 2)
899                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
900                 }
901             }else if(audio_sync_method>1){
902                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
903                 av_assert0(ost->audio_resample);
904                 if(verbose > 2)
905                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
906 //                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));
907                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
908             }
909         }
910     }else
911         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
912                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
913
914     if (ost->audio_resample) {
915         buftmp = audio_buf;
916         size_out = audio_resample(ost->resample,
917                                   (short *)buftmp, (short *)buf,
918                                   size / (dec->channels * isize));
919         size_out = size_out * enc->channels * osize;
920     } else {
921         buftmp = buf;
922         size_out = size;
923     }
924
925     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
926         const void *ibuf[6]= {buftmp};
927         void *obuf[6]= {audio_buf};
928         int istride[6]= {isize};
929         int ostride[6]= {osize};
930         int len= size_out/istride[0];
931         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
932             printf("av_audio_convert() failed\n");
933             if (exit_on_error)
934                 ffmpeg_exit(1);
935             return;
936         }
937         buftmp = audio_buf;
938         size_out = len*osize;
939     }
940
941     /* now encode as many frames as possible */
942     if (enc->frame_size > 1) {
943         /* output resampled raw samples */
944         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
945             fprintf(stderr, "av_fifo_realloc2() failed\n");
946             ffmpeg_exit(1);
947         }
948         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
949
950         frame_bytes = enc->frame_size * osize * enc->channels;
951
952         while (av_fifo_size(ost->fifo) >= frame_bytes) {
953             AVPacket pkt;
954             av_init_packet(&pkt);
955
956             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
957
958             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
959
960             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
961                                        (short *)audio_buf);
962             if (ret < 0) {
963                 fprintf(stderr, "Audio encoding failed\n");
964                 ffmpeg_exit(1);
965             }
966             audio_size += ret;
967             pkt.stream_index= ost->index;
968             pkt.data= audio_out;
969             pkt.size= ret;
970             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
971                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
972             pkt.flags |= AV_PKT_FLAG_KEY;
973             write_frame(s, &pkt, enc, ost->bitstream_filters);
974
975             ost->sync_opts += enc->frame_size;
976         }
977     } else {
978         AVPacket pkt;
979         av_init_packet(&pkt);
980
981         ost->sync_opts += size_out / (osize * enc->channels);
982
983         /* output a pcm frame */
984         /* determine the size of the coded buffer */
985         size_out /= osize;
986         if (coded_bps)
987             size_out = size_out*coded_bps/8;
988
989         if(size_out > audio_out_size){
990             fprintf(stderr, "Internal error, buffer size too small\n");
991             ffmpeg_exit(1);
992         }
993
994         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
995         ret = avcodec_encode_audio(enc, audio_out, size_out,
996                                    (short *)buftmp);
997         if (ret < 0) {
998             fprintf(stderr, "Audio encoding failed\n");
999             ffmpeg_exit(1);
1000         }
1001         audio_size += ret;
1002         pkt.stream_index= ost->index;
1003         pkt.data= audio_out;
1004         pkt.size= ret;
1005         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1006             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1007         pkt.flags |= AV_PKT_FLAG_KEY;
1008         write_frame(s, &pkt, enc, ost->bitstream_filters);
1009     }
1010 }
1011
1012 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1013 {
1014     AVCodecContext *dec;
1015     AVPicture *picture2;
1016     AVPicture picture_tmp;
1017     uint8_t *buf = 0;
1018
1019     dec = ist->st->codec;
1020
1021     /* deinterlace : must be done before any resize */
1022     if (do_deinterlace) {
1023         int size;
1024
1025         /* create temporary picture */
1026         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1027         buf = av_malloc(size);
1028         if (!buf)
1029             return;
1030
1031         picture2 = &picture_tmp;
1032         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1033
1034         if(avpicture_deinterlace(picture2, picture,
1035                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1036             /* if error, do not deinterlace */
1037             fprintf(stderr, "Deinterlacing failed\n");
1038             av_free(buf);
1039             buf = NULL;
1040             picture2 = picture;
1041         }
1042     } else {
1043         picture2 = picture;
1044     }
1045
1046     if (picture != picture2)
1047         *picture = *picture2;
1048     *bufp = buf;
1049 }
1050
1051 /* we begin to correct av delay at this threshold */
1052 #define AV_DELAY_MAX 0.100
1053
1054 static void do_subtitle_out(AVFormatContext *s,
1055                             OutputStream *ost,
1056                             InputStream *ist,
1057                             AVSubtitle *sub,
1058                             int64_t pts)
1059 {
1060     static uint8_t *subtitle_out = NULL;
1061     int subtitle_out_max_size = 1024 * 1024;
1062     int subtitle_out_size, nb, i;
1063     AVCodecContext *enc;
1064     AVPacket pkt;
1065
1066     if (pts == AV_NOPTS_VALUE) {
1067         fprintf(stderr, "Subtitle packets must have a pts\n");
1068         if (exit_on_error)
1069             ffmpeg_exit(1);
1070         return;
1071     }
1072
1073     enc = ost->st->codec;
1074
1075     if (!subtitle_out) {
1076         subtitle_out = av_malloc(subtitle_out_max_size);
1077     }
1078
1079     /* Note: DVB subtitle need one packet to draw them and one other
1080        packet to clear them */
1081     /* XXX: signal it in the codec context ? */
1082     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1083         nb = 2;
1084     else
1085         nb = 1;
1086
1087     for(i = 0; i < nb; i++) {
1088         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1089         // start_display_time is required to be 0
1090         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1091         sub->end_display_time -= sub->start_display_time;
1092         sub->start_display_time = 0;
1093         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1094                                                     subtitle_out_max_size, sub);
1095         if (subtitle_out_size < 0) {
1096             fprintf(stderr, "Subtitle encoding failed\n");
1097             ffmpeg_exit(1);
1098         }
1099
1100         av_init_packet(&pkt);
1101         pkt.stream_index = ost->index;
1102         pkt.data = subtitle_out;
1103         pkt.size = subtitle_out_size;
1104         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1105         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1106             /* XXX: the pts correction is handled here. Maybe handling
1107                it in the codec would be better */
1108             if (i == 0)
1109                 pkt.pts += 90 * sub->start_display_time;
1110             else
1111                 pkt.pts += 90 * sub->end_display_time;
1112         }
1113         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1114     }
1115 }
1116
1117 static int bit_buffer_size= 1024*256;
1118 static uint8_t *bit_buffer= NULL;
1119
1120 static void do_video_out(AVFormatContext *s,
1121                          OutputStream *ost,
1122                          InputStream *ist,
1123                          AVFrame *in_picture,
1124                          int *frame_size, float quality)
1125 {
1126     int nb_frames, i, ret, resample_changed;
1127     AVFrame *final_picture, *formatted_picture;
1128     AVCodecContext *enc, *dec;
1129     double sync_ipts;
1130
1131     enc = ost->st->codec;
1132     dec = ist->st->codec;
1133
1134     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1135
1136     /* by default, we output a single frame */
1137     nb_frames = 1;
1138
1139     *frame_size = 0;
1140
1141     if(video_sync_method){
1142         double vdelta = sync_ipts - ost->sync_opts;
1143         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1144         if (vdelta < -1.1)
1145             nb_frames = 0;
1146         else if (video_sync_method == 2 || (video_sync_method<0 && (s->oformat->flags & AVFMT_VARIABLE_FPS))){
1147             if(vdelta<=-0.6){
1148                 nb_frames=0;
1149             }else if(vdelta>0.6)
1150                 ost->sync_opts= lrintf(sync_ipts);
1151         }else if (vdelta > 1.1)
1152             nb_frames = lrintf(vdelta);
1153 //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);
1154         if (nb_frames == 0){
1155             ++nb_frames_drop;
1156             if (verbose>2)
1157                 fprintf(stderr, "*** drop!\n");
1158         }else if (nb_frames > 1) {
1159             nb_frames_dup += nb_frames - 1;
1160             if (verbose>2)
1161                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1162         }
1163     }else
1164         ost->sync_opts= lrintf(sync_ipts);
1165
1166     nb_frames= FFMIN(nb_frames, max_frames[AVMEDIA_TYPE_VIDEO] - ost->frame_number);
1167     if (nb_frames <= 0)
1168         return;
1169
1170     formatted_picture = in_picture;
1171     final_picture = formatted_picture;
1172
1173     resample_changed = ost->resample_width   != dec->width  ||
1174                        ost->resample_height  != dec->height ||
1175                        ost->resample_pix_fmt != dec->pix_fmt;
1176
1177     if (resample_changed) {
1178         av_log(NULL, AV_LOG_INFO,
1179                "Input stream #%d.%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1180                ist->file_index, ist->st->index,
1181                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1182                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1183         if(!ost->video_resample)
1184             ffmpeg_exit(1);
1185     }
1186
1187 #if !CONFIG_AVFILTER
1188     if (ost->video_resample) {
1189         final_picture = &ost->pict_tmp;
1190         if (resample_changed) {
1191             /* initialize a new scaler context */
1192             sws_freeContext(ost->img_resample_ctx);
1193             ost->img_resample_ctx = sws_getContext(
1194                 ist->st->codec->width,
1195                 ist->st->codec->height,
1196                 ist->st->codec->pix_fmt,
1197                 ost->st->codec->width,
1198                 ost->st->codec->height,
1199                 ost->st->codec->pix_fmt,
1200                 ost->sws_flags, NULL, NULL, NULL);
1201             if (ost->img_resample_ctx == NULL) {
1202                 fprintf(stderr, "Cannot get resampling context\n");
1203                 ffmpeg_exit(1);
1204             }
1205         }
1206         sws_scale(ost->img_resample_ctx, formatted_picture->data, formatted_picture->linesize,
1207               0, ost->resample_height, final_picture->data, final_picture->linesize);
1208     }
1209 #endif
1210
1211     /* duplicates frame if needed */
1212     for(i=0;i<nb_frames;i++) {
1213         AVPacket pkt;
1214         av_init_packet(&pkt);
1215         pkt.stream_index= ost->index;
1216
1217         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1218             /* raw pictures are written as AVPicture structure to
1219                avoid any copies. We support temorarily the older
1220                method. */
1221             AVFrame* old_frame = enc->coded_frame;
1222             enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
1223             pkt.data= (uint8_t *)final_picture;
1224             pkt.size=  sizeof(AVPicture);
1225             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1226             pkt.flags |= AV_PKT_FLAG_KEY;
1227
1228             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1229             enc->coded_frame = old_frame;
1230         } else {
1231             AVFrame big_picture;
1232
1233             big_picture= *final_picture;
1234             /* better than nothing: use input picture interlaced
1235                settings */
1236             big_picture.interlaced_frame = in_picture->interlaced_frame;
1237             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1238                 if(top_field_first == -1)
1239                     big_picture.top_field_first = in_picture->top_field_first;
1240                 else
1241                     big_picture.top_field_first = top_field_first;
1242             }
1243
1244             /* handles sameq here. This is not correct because it may
1245                not be a global option */
1246             big_picture.quality = quality;
1247             if(!me_threshold)
1248                 big_picture.pict_type = 0;
1249 //            big_picture.pts = AV_NOPTS_VALUE;
1250             big_picture.pts= ost->sync_opts;
1251 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1252 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1253             if (ost->forced_kf_index < ost->forced_kf_count &&
1254                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1255                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1256                 ost->forced_kf_index++;
1257             }
1258             ret = avcodec_encode_video(enc,
1259                                        bit_buffer, bit_buffer_size,
1260                                        &big_picture);
1261             if (ret < 0) {
1262                 fprintf(stderr, "Video encoding failed\n");
1263                 ffmpeg_exit(1);
1264             }
1265
1266             if(ret>0){
1267                 pkt.data= bit_buffer;
1268                 pkt.size= ret;
1269                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1270                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1271 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1272    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1273    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1274
1275                 if(enc->coded_frame->key_frame)
1276                     pkt.flags |= AV_PKT_FLAG_KEY;
1277                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1278                 *frame_size = ret;
1279                 video_size += ret;
1280                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1281                 //        enc->frame_number-1, ret, enc->pict_type);
1282                 /* if two pass, output log */
1283                 if (ost->logfile && enc->stats_out) {
1284                     fprintf(ost->logfile, "%s", enc->stats_out);
1285                 }
1286             }
1287         }
1288         ost->sync_opts++;
1289         ost->frame_number++;
1290     }
1291 }
1292
1293 static double psnr(double d){
1294     return -10.0*log(d)/log(10.0);
1295 }
1296
1297 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1298                            int frame_size)
1299 {
1300     AVCodecContext *enc;
1301     int frame_number;
1302     double ti1, bitrate, avg_bitrate;
1303
1304     /* this is executed just the first time do_video_stats is called */
1305     if (!vstats_file) {
1306         vstats_file = fopen(vstats_filename, "w");
1307         if (!vstats_file) {
1308             perror("fopen");
1309             ffmpeg_exit(1);
1310         }
1311     }
1312
1313     enc = ost->st->codec;
1314     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1315         frame_number = ost->frame_number;
1316         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1317         if (enc->flags&CODEC_FLAG_PSNR)
1318             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1319
1320         fprintf(vstats_file,"f_size= %6d ", frame_size);
1321         /* compute pts value */
1322         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1323         if (ti1 < 0.01)
1324             ti1 = 0.01;
1325
1326         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1327         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1328         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1329             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1330         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1331     }
1332 }
1333
1334 static void print_report(AVFormatContext **output_files,
1335                          OutputStream **ost_table, int nb_ostreams,
1336                          int is_last_report)
1337 {
1338     char buf[1024];
1339     OutputStream *ost;
1340     AVFormatContext *oc;
1341     int64_t total_size;
1342     AVCodecContext *enc;
1343     int frame_number, vid, i;
1344     double bitrate, ti1, pts;
1345     static int64_t last_time = -1;
1346     static int qp_histogram[52];
1347
1348     if (!is_last_report) {
1349         int64_t cur_time;
1350         /* display the report every 0.5 seconds */
1351         cur_time = av_gettime();
1352         if (last_time == -1) {
1353             last_time = cur_time;
1354             return;
1355         }
1356         if ((cur_time - last_time) < 500000)
1357             return;
1358         last_time = cur_time;
1359     }
1360
1361
1362     oc = output_files[0];
1363
1364     total_size = avio_size(oc->pb);
1365     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1366         total_size= avio_tell(oc->pb);
1367
1368     buf[0] = '\0';
1369     ti1 = 1e10;
1370     vid = 0;
1371     for(i=0;i<nb_ostreams;i++) {
1372         float q = -1;
1373         ost = ost_table[i];
1374         enc = ost->st->codec;
1375         if (!ost->st->stream_copy && enc->coded_frame)
1376             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1377         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1378             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1379         }
1380         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1381             float t = (av_gettime()-timer_start) / 1000000.0;
1382
1383             frame_number = ost->frame_number;
1384             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1385                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1386             if(is_last_report)
1387                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1388             if(qp_hist){
1389                 int j;
1390                 int qp = lrintf(q);
1391                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1392                     qp_histogram[qp]++;
1393                 for(j=0; j<32; j++)
1394                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1395             }
1396             if (enc->flags&CODEC_FLAG_PSNR){
1397                 int j;
1398                 double error, error_sum=0;
1399                 double scale, scale_sum=0;
1400                 char type[3]= {'Y','U','V'};
1401                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1402                 for(j=0; j<3; j++){
1403                     if(is_last_report){
1404                         error= enc->error[j];
1405                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1406                     }else{
1407                         error= enc->coded_frame->error[j];
1408                         scale= enc->width*enc->height*255.0*255.0;
1409                     }
1410                     if(j) scale/=4;
1411                     error_sum += error;
1412                     scale_sum += scale;
1413                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1414                 }
1415                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1416             }
1417             vid = 1;
1418         }
1419         /* compute min output value */
1420         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1421         if ((pts < ti1) && (pts > 0))
1422             ti1 = pts;
1423     }
1424     if (ti1 < 0.01)
1425         ti1 = 0.01;
1426
1427     if (verbose > 0 || is_last_report) {
1428         bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1429
1430         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1431             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1432             (double)total_size / 1024, ti1, bitrate);
1433
1434         if (nb_frames_dup || nb_frames_drop)
1435           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1436                   nb_frames_dup, nb_frames_drop);
1437
1438         if (verbose >= 0)
1439             fprintf(stderr, "%s    \r", buf);
1440
1441         fflush(stderr);
1442     }
1443
1444     if (is_last_report && verbose >= 0){
1445         int64_t raw= audio_size + video_size + extra_size;
1446         fprintf(stderr, "\n");
1447         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1448                 video_size/1024.0,
1449                 audio_size/1024.0,
1450                 extra_size/1024.0,
1451                 100.0*(total_size - raw)/raw
1452         );
1453     }
1454 }
1455
1456 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1457 {
1458     int fill_char = 0x00;
1459     if (sample_fmt == AV_SAMPLE_FMT_U8)
1460         fill_char = 0x80;
1461     memset(buf, fill_char, size);
1462 }
1463
1464 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1465 static int output_packet(InputStream *ist, int ist_index,
1466                          OutputStream **ost_table, int nb_ostreams,
1467                          const AVPacket *pkt)
1468 {
1469     AVFormatContext *os;
1470     OutputStream *ost;
1471     int ret, i;
1472     int got_output;
1473     AVFrame picture;
1474     void *buffer_to_free = NULL;
1475     static unsigned int samples_size= 0;
1476     AVSubtitle subtitle, *subtitle_to_free;
1477     int64_t pkt_pts = AV_NOPTS_VALUE;
1478 #if CONFIG_AVFILTER
1479     int frame_available;
1480 #endif
1481     float quality;
1482
1483     AVPacket avpkt;
1484     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1485
1486     if(ist->next_pts == AV_NOPTS_VALUE)
1487         ist->next_pts= ist->pts;
1488
1489     if (pkt == NULL) {
1490         /* EOF handling */
1491         av_init_packet(&avpkt);
1492         avpkt.data = NULL;
1493         avpkt.size = 0;
1494         goto handle_eof;
1495     } else {
1496         avpkt = *pkt;
1497     }
1498
1499     if(pkt->dts != AV_NOPTS_VALUE)
1500         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1501     if(pkt->pts != AV_NOPTS_VALUE)
1502         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1503
1504     //while we have more to decode or while the decoder did output something on EOF
1505     while (avpkt.size > 0 || (!pkt && got_output)) {
1506         uint8_t *data_buf, *decoded_data_buf;
1507         int data_size, decoded_data_size;
1508     handle_eof:
1509         ist->pts= ist->next_pts;
1510
1511         if(avpkt.size && avpkt.size != pkt->size &&
1512            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1513             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1514             ist->showed_multi_packet_warning=1;
1515         }
1516
1517         /* decode the packet if needed */
1518         decoded_data_buf = NULL; /* fail safe */
1519         decoded_data_size= 0;
1520         data_buf  = avpkt.data;
1521         data_size = avpkt.size;
1522         subtitle_to_free = NULL;
1523         if (ist->decoding_needed) {
1524             switch(ist->st->codec->codec_type) {
1525             case AVMEDIA_TYPE_AUDIO:{
1526                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1527                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1528                     av_free(samples);
1529                     samples= av_malloc(samples_size);
1530                 }
1531                 decoded_data_size= samples_size;
1532                     /* XXX: could avoid copy if PCM 16 bits with same
1533                        endianness as CPU */
1534                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1535                                             &avpkt);
1536                 if (ret < 0)
1537                     goto fail_decode;
1538                 avpkt.data += ret;
1539                 avpkt.size -= ret;
1540                 data_size   = ret;
1541                 got_output  = decoded_data_size > 0;
1542                 /* Some bug in mpeg audio decoder gives */
1543                 /* decoded_data_size < 0, it seems they are overflows */
1544                 if (!got_output) {
1545                     /* no audio frame */
1546                     continue;
1547                 }
1548                 decoded_data_buf = (uint8_t *)samples;
1549                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1550                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1551                 break;}
1552             case AVMEDIA_TYPE_VIDEO:
1553                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1554                     /* XXX: allocate picture correctly */
1555                     avcodec_get_frame_defaults(&picture);
1556                     avpkt.pts = pkt_pts;
1557                     avpkt.dts = ist->pts;
1558                     pkt_pts = AV_NOPTS_VALUE;
1559
1560                     ret = avcodec_decode_video2(ist->st->codec,
1561                                                 &picture, &got_output, &avpkt);
1562                     quality = same_quality ? picture.quality : 0;
1563                     if (ret < 0)
1564                         goto fail_decode;
1565                     if (!got_output) {
1566                         /* no picture yet */
1567                         goto discard_packet;
1568                     }
1569                     ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, picture.pkt_pts, picture.pkt_dts);
1570                     if (ist->st->codec->time_base.num != 0) {
1571                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1572                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1573                                           ist->st->codec->time_base.num * ticks) /
1574                             ist->st->codec->time_base.den;
1575                     }
1576                     avpkt.size = 0;
1577                     buffer_to_free = NULL;
1578                     pre_process_video_frame(ist, (AVPicture *)&picture, &buffer_to_free);
1579                     break;
1580             case AVMEDIA_TYPE_SUBTITLE:
1581                 ret = avcodec_decode_subtitle2(ist->st->codec,
1582                                                &subtitle, &got_output, &avpkt);
1583                 if (ret < 0)
1584                     goto fail_decode;
1585                 if (!got_output) {
1586                     goto discard_packet;
1587                 }
1588                 subtitle_to_free = &subtitle;
1589                 avpkt.size = 0;
1590                 break;
1591             default:
1592                 goto fail_decode;
1593             }
1594         } else {
1595             switch(ist->st->codec->codec_type) {
1596             case AVMEDIA_TYPE_AUDIO:
1597                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1598                     ist->st->codec->sample_rate;
1599                 break;
1600             case AVMEDIA_TYPE_VIDEO:
1601                 if (ist->st->codec->time_base.num != 0) {
1602                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1603                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1604                                       ist->st->codec->time_base.num * ticks) /
1605                         ist->st->codec->time_base.den;
1606                 }
1607                 break;
1608             }
1609             ret = avpkt.size;
1610             avpkt.size = 0;
1611         }
1612
1613 #if CONFIG_AVFILTER
1614         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1615             for (i = 0; i < nb_ostreams; i++) {
1616                 ost = ost_table[i];
1617                 if (ost->input_video_filter && ost->source_index == ist_index) {
1618                     AVRational sar;
1619                     if (ist->st->sample_aspect_ratio.num)
1620                         sar = ist->st->sample_aspect_ratio;
1621                     else
1622                         sar = ist->st->codec->sample_aspect_ratio;
1623                     // add it to be filtered
1624                     av_vsrc_buffer_add_frame(ost->input_video_filter, &picture,
1625                                              ist->pts,
1626                                              sar);
1627                 }
1628             }
1629         }
1630 #endif
1631
1632         // preprocess audio (volume)
1633         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1634             if (audio_volume != 256) {
1635                 short *volp;
1636                 volp = samples;
1637                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1638                     int v = ((*volp) * audio_volume + 128) >> 8;
1639                     if (v < -32768) v = -32768;
1640                     if (v >  32767) v = 32767;
1641                     *volp++ = v;
1642                 }
1643             }
1644         }
1645
1646         /* frame rate emulation */
1647         if (rate_emu) {
1648             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1649             int64_t now = av_gettime() - ist->start;
1650             if (pts > now)
1651                 usleep(pts - now);
1652         }
1653         /* if output time reached then transcode raw format,
1654            encode packets and output them */
1655         if (start_time == 0 || ist->pts >= start_time)
1656             for(i=0;i<nb_ostreams;i++) {
1657                 int frame_size;
1658
1659                 ost = ost_table[i];
1660                 if (ost->source_index == ist_index) {
1661 #if CONFIG_AVFILTER
1662                 frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1663                     !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1664                 while (frame_available) {
1665                     AVRational ist_pts_tb;
1666                     if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter)
1667                         get_filtered_video_frame(ost->output_video_filter, &picture, &ost->picref, &ist_pts_tb);
1668                     if (ost->picref)
1669                         ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1670 #endif
1671                     os = output_files[ost->file_index];
1672
1673                     /* set the input output pts pairs */
1674                     //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
1675
1676                     if (ost->encoding_needed) {
1677                         av_assert0(ist->decoding_needed);
1678                         switch(ost->st->codec->codec_type) {
1679                         case AVMEDIA_TYPE_AUDIO:
1680                             do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1681                             break;
1682                         case AVMEDIA_TYPE_VIDEO:
1683 #if CONFIG_AVFILTER
1684                             if (ost->picref->video && !ost->frame_aspect_ratio)
1685                                 ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
1686 #endif
1687                             do_video_out(os, ost, ist, &picture, &frame_size,
1688                                          same_quality ? quality : ost->st->codec->global_quality);
1689                             if (vstats_filename && frame_size)
1690                                 do_video_stats(os, ost, frame_size);
1691                             break;
1692                         case AVMEDIA_TYPE_SUBTITLE:
1693                             do_subtitle_out(os, ost, ist, &subtitle,
1694                                             pkt->pts);
1695                             break;
1696                         default:
1697                             abort();
1698                         }
1699                     } else {
1700                         AVFrame avframe; //FIXME/XXX remove this
1701                         AVPacket opkt;
1702                         int64_t ost_tb_start_time= av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1703
1704                         av_init_packet(&opkt);
1705
1706                         if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1707 #if !CONFIG_AVFILTER
1708                             continue;
1709 #else
1710                             goto cont;
1711 #endif
1712
1713                         /* no reencoding needed : output the packet directly */
1714                         /* force the input stream PTS */
1715
1716                         avcodec_get_frame_defaults(&avframe);
1717                         ost->st->codec->coded_frame= &avframe;
1718                         avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1719
1720                         if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1721                             audio_size += data_size;
1722                         else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1723                             video_size += data_size;
1724                             ost->sync_opts++;
1725                         }
1726
1727                         opkt.stream_index= ost->index;
1728                         if(pkt->pts != AV_NOPTS_VALUE)
1729                             opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1730                         else
1731                             opkt.pts= AV_NOPTS_VALUE;
1732
1733                         if (pkt->dts == AV_NOPTS_VALUE)
1734                             opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1735                         else
1736                             opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1737                         opkt.dts -= ost_tb_start_time;
1738
1739                         opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1740                         opkt.flags= pkt->flags;
1741
1742                         //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1743                         if(   ost->st->codec->codec_id != CODEC_ID_H264
1744                            && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1745                            && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1746                            ) {
1747                             if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1748                                 opkt.destruct= av_destruct_packet;
1749                         } else {
1750                             opkt.data = data_buf;
1751                             opkt.size = data_size;
1752                         }
1753
1754                         write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1755                         ost->st->codec->frame_number++;
1756                         ost->frame_number++;
1757                         av_free_packet(&opkt);
1758                     }
1759 #if CONFIG_AVFILTER
1760                     cont:
1761                     frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1762                                        ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1763                     if (ost->picref)
1764                         avfilter_unref_buffer(ost->picref);
1765                 }
1766 #endif
1767                 }
1768             }
1769
1770         av_free(buffer_to_free);
1771         /* XXX: allocate the subtitles in the codec ? */
1772         if (subtitle_to_free) {
1773             avsubtitle_free(subtitle_to_free);
1774             subtitle_to_free = NULL;
1775         }
1776     }
1777  discard_packet:
1778     if (pkt == NULL) {
1779         /* EOF handling */
1780
1781         for(i=0;i<nb_ostreams;i++) {
1782             ost = ost_table[i];
1783             if (ost->source_index == ist_index) {
1784                 AVCodecContext *enc= ost->st->codec;
1785                 os = output_files[ost->file_index];
1786
1787                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1788                     continue;
1789                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1790                     continue;
1791
1792                 if (ost->encoding_needed) {
1793                     for(;;) {
1794                         AVPacket pkt;
1795                         int fifo_bytes;
1796                         av_init_packet(&pkt);
1797                         pkt.stream_index= ost->index;
1798
1799                         switch(ost->st->codec->codec_type) {
1800                         case AVMEDIA_TYPE_AUDIO:
1801                             fifo_bytes = av_fifo_size(ost->fifo);
1802                             ret = 0;
1803                             /* encode any samples remaining in fifo */
1804                             if (fifo_bytes > 0) {
1805                                 int osize = av_get_bytes_per_sample(enc->sample_fmt);
1806                                 int fs_tmp = enc->frame_size;
1807
1808                                 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1809                                 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1810                                     enc->frame_size = fifo_bytes / (osize * enc->channels);
1811                                 } else { /* pad */
1812                                     int frame_bytes = enc->frame_size*osize*enc->channels;
1813                                     if (allocated_audio_buf_size < frame_bytes)
1814                                         ffmpeg_exit(1);
1815                                     generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1816                                 }
1817
1818                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1819                                 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1820                                                           ost->st->time_base.num, enc->sample_rate);
1821                                 enc->frame_size = fs_tmp;
1822                             }
1823                             if(ret <= 0) {
1824                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1825                             }
1826                             if (ret < 0) {
1827                                 fprintf(stderr, "Audio encoding failed\n");
1828                                 ffmpeg_exit(1);
1829                             }
1830                             audio_size += ret;
1831                             pkt.flags |= AV_PKT_FLAG_KEY;
1832                             break;
1833                         case AVMEDIA_TYPE_VIDEO:
1834                             ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1835                             if (ret < 0) {
1836                                 fprintf(stderr, "Video encoding failed\n");
1837                                 ffmpeg_exit(1);
1838                             }
1839                             video_size += ret;
1840                             if(enc->coded_frame && enc->coded_frame->key_frame)
1841                                 pkt.flags |= AV_PKT_FLAG_KEY;
1842                             if (ost->logfile && enc->stats_out) {
1843                                 fprintf(ost->logfile, "%s", enc->stats_out);
1844                             }
1845                             break;
1846                         default:
1847                             ret=-1;
1848                         }
1849
1850                         if(ret<=0)
1851                             break;
1852                         pkt.data= bit_buffer;
1853                         pkt.size= ret;
1854                         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1855                             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1856                         write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1857                     }
1858                 }
1859             }
1860         }
1861     }
1862
1863     return 0;
1864  fail_decode:
1865     return -1;
1866 }
1867
1868 static void print_sdp(AVFormatContext **avc, int n)
1869 {
1870     char sdp[2048];
1871
1872     av_sdp_create(avc, n, sdp, sizeof(sdp));
1873     printf("SDP:\n%s\n", sdp);
1874     fflush(stdout);
1875 }
1876
1877 static int copy_chapters(int infile, int outfile)
1878 {
1879     AVFormatContext *is = input_files[infile].ctx;
1880     AVFormatContext *os = output_files[outfile];
1881     int i;
1882
1883     for (i = 0; i < is->nb_chapters; i++) {
1884         AVChapter *in_ch = is->chapters[i], *out_ch;
1885         int64_t ts_off   = av_rescale_q(start_time - input_files[infile].ts_offset,
1886                                       AV_TIME_BASE_Q, in_ch->time_base);
1887         int64_t rt       = (recording_time == INT64_MAX) ? INT64_MAX :
1888                            av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
1889
1890
1891         if (in_ch->end < ts_off)
1892             continue;
1893         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
1894             break;
1895
1896         out_ch = av_mallocz(sizeof(AVChapter));
1897         if (!out_ch)
1898             return AVERROR(ENOMEM);
1899
1900         out_ch->id        = in_ch->id;
1901         out_ch->time_base = in_ch->time_base;
1902         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
1903         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
1904
1905         if (metadata_chapters_autocopy)
1906             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
1907
1908         os->nb_chapters++;
1909         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
1910         if (!os->chapters)
1911             return AVERROR(ENOMEM);
1912         os->chapters[os->nb_chapters - 1] = out_ch;
1913     }
1914     return 0;
1915 }
1916
1917 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1918                                     AVCodecContext *avctx)
1919 {
1920     char *p;
1921     int n = 1, i;
1922     int64_t t;
1923
1924     for (p = kf; *p; p++)
1925         if (*p == ',')
1926             n++;
1927     ost->forced_kf_count = n;
1928     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1929     if (!ost->forced_kf_pts) {
1930         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1931         ffmpeg_exit(1);
1932     }
1933     for (i = 0; i < n; i++) {
1934         p = i ? strchr(p, ',') + 1 : kf;
1935         t = parse_time_or_die("force_key_frames", p, 1);
1936         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1937     }
1938 }
1939
1940 /*
1941  * The following code is the main loop of the file converter
1942  */
1943 static int transcode(AVFormatContext **output_files,
1944                      int nb_output_files,
1945                      InputFile *input_files,
1946                      int nb_input_files,
1947                      StreamMap *stream_maps, int nb_stream_maps)
1948 {
1949     int ret = 0, i, j, k, n, nb_ostreams = 0;
1950     AVFormatContext *is, *os;
1951     AVCodecContext *codec, *icodec;
1952     OutputStream *ost, **ost_table = NULL;
1953     InputStream *ist;
1954     char error[1024];
1955     int want_sdp = 1;
1956     uint8_t no_packet[MAX_FILES]={0};
1957     int no_packet_count=0;
1958
1959     if (rate_emu)
1960         for (i = 0; i < nb_input_streams; i++)
1961             input_streams[i].start = av_gettime();
1962
1963     /* output stream init */
1964     nb_ostreams = 0;
1965     for(i=0;i<nb_output_files;i++) {
1966         os = output_files[i];
1967         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1968             av_dump_format(output_files[i], i, output_files[i]->filename, 1);
1969             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
1970             ret = AVERROR(EINVAL);
1971             goto fail;
1972         }
1973         nb_ostreams += os->nb_streams;
1974     }
1975     if (nb_stream_maps > 0 && nb_stream_maps != nb_ostreams) {
1976         fprintf(stderr, "Number of stream maps must match number of output streams\n");
1977         ret = AVERROR(EINVAL);
1978         goto fail;
1979     }
1980
1981     /* Sanity check the mapping args -- do the input files & streams exist? */
1982     for(i=0;i<nb_stream_maps;i++) {
1983         int fi = stream_maps[i].file_index;
1984         int si = stream_maps[i].stream_index;
1985
1986         if (fi < 0 || fi > nb_input_files - 1 ||
1987             si < 0 || si > input_files[fi].ctx->nb_streams - 1) {
1988             fprintf(stderr,"Could not find input stream #%d.%d\n", fi, si);
1989             ret = AVERROR(EINVAL);
1990             goto fail;
1991         }
1992         fi = stream_maps[i].sync_file_index;
1993         si = stream_maps[i].sync_stream_index;
1994         if (fi < 0 || fi > nb_input_files - 1 ||
1995             si < 0 || si > input_files[fi].ctx->nb_streams - 1) {
1996             fprintf(stderr,"Could not find sync stream #%d.%d\n", fi, si);
1997             ret = AVERROR(EINVAL);
1998             goto fail;
1999         }
2000     }
2001
2002     ost_table = av_mallocz(sizeof(OutputStream *) * nb_ostreams);
2003     if (!ost_table)
2004         goto fail;
2005     n = 0;
2006     for(k=0;k<nb_output_files;k++) {
2007         os = output_files[k];
2008         for(i=0;i<os->nb_streams;i++,n++) {
2009             int found;
2010             ost = ost_table[n] = output_streams_for_file[k][i];
2011             ost->st = os->streams[i];
2012             if (nb_stream_maps > 0) {
2013                 ost->source_index = input_files[stream_maps[n].file_index].ist_index +
2014                     stream_maps[n].stream_index;
2015
2016                 /* Sanity check that the stream types match */
2017                 if (input_streams[ost->source_index].st->codec->codec_type != ost->st->codec->codec_type) {
2018                     int i= ost->file_index;
2019                     av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2020                     fprintf(stderr, "Codec type mismatch for mapping #%d.%d -> #%d.%d\n",
2021                         stream_maps[n].file_index, stream_maps[n].stream_index,
2022                         ost->file_index, ost->index);
2023                     ffmpeg_exit(1);
2024                 }
2025
2026             } else {
2027                 int best_nb_frames=-1;
2028                 /* get corresponding input stream index : we select the first one with the right type */
2029                 found = 0;
2030                 for (j = 0; j < nb_input_streams; j++) {
2031                     int skip=0;
2032                     ist = &input_streams[j];
2033                     if(opt_programid){
2034                         int pi,si;
2035                         AVFormatContext *f = input_files[ist->file_index].ctx;
2036                         skip=1;
2037                         for(pi=0; pi<f->nb_programs; pi++){
2038                             AVProgram *p= f->programs[pi];
2039                             if(p->id == opt_programid)
2040                                 for(si=0; si<p->nb_stream_indexes; si++){
2041                                     if(f->streams[ p->stream_index[si] ] == ist->st)
2042                                         skip=0;
2043                                 }
2044                         }
2045                     }
2046                     if (ist->discard && ist->st->discard != AVDISCARD_ALL && !skip &&
2047                         ist->st->codec->codec_type == ost->st->codec->codec_type) {
2048                         if(best_nb_frames < ist->st->codec_info_nb_frames){
2049                             best_nb_frames= ist->st->codec_info_nb_frames;
2050                             ost->source_index = j;
2051                             found = 1;
2052                         }
2053                     }
2054                 }
2055
2056                 if (!found) {
2057                     if(! opt_programid) {
2058                         /* try again and reuse existing stream */
2059                         for (j = 0; j < nb_input_streams; j++) {
2060                             ist = &input_streams[j];
2061                             if (   ist->st->codec->codec_type == ost->st->codec->codec_type
2062                                 && ist->st->discard != AVDISCARD_ALL) {
2063                                 ost->source_index = j;
2064                                 found = 1;
2065                             }
2066                         }
2067                     }
2068                     if (!found) {
2069                         int i= ost->file_index;
2070                         av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2071                         fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",
2072                                 ost->file_index, ost->index);
2073                         ffmpeg_exit(1);
2074                     }
2075                 }
2076             }
2077             ist = &input_streams[ost->source_index];
2078             ist->discard = 0;
2079             ost->sync_ist = (nb_stream_maps > 0) ?
2080                 &input_streams[input_files[stream_maps[n].sync_file_index].ist_index +
2081                          stream_maps[n].sync_stream_index] : ist;
2082         }
2083     }
2084
2085     /* for each output stream, we compute the right encoding parameters */
2086     for(i=0;i<nb_ostreams;i++) {
2087         ost = ost_table[i];
2088         os = output_files[ost->file_index];
2089         ist = &input_streams[ost->source_index];
2090
2091         codec = ost->st->codec;
2092         icodec = ist->st->codec;
2093
2094         if (metadata_streams_autocopy)
2095             av_dict_copy(&ost->st->metadata, ist->st->metadata,
2096                          AV_DICT_DONT_OVERWRITE);
2097
2098         ost->st->disposition = ist->st->disposition;
2099         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2100         codec->chroma_sample_location = icodec->chroma_sample_location;
2101
2102         if (ost->st->stream_copy) {
2103             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2104
2105             if (extra_size > INT_MAX)
2106                 goto fail;
2107
2108             /* if stream_copy is selected, no need to decode or encode */
2109             codec->codec_id = icodec->codec_id;
2110             codec->codec_type = icodec->codec_type;
2111
2112             if(!codec->codec_tag){
2113                 if(   !os->oformat->codec_tag
2114                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2115                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2116                     codec->codec_tag = icodec->codec_tag;
2117             }
2118
2119             codec->bit_rate = icodec->bit_rate;
2120             codec->rc_max_rate    = icodec->rc_max_rate;
2121             codec->rc_buffer_size = icodec->rc_buffer_size;
2122             codec->extradata= av_mallocz(extra_size);
2123             if (!codec->extradata)
2124                 goto fail;
2125             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2126             codec->extradata_size= icodec->extradata_size;
2127             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){
2128                 codec->time_base = icodec->time_base;
2129                 codec->time_base.num *= icodec->ticks_per_frame;
2130                 av_reduce(&codec->time_base.num, &codec->time_base.den,
2131                           codec->time_base.num, codec->time_base.den, INT_MAX);
2132             }else
2133                 codec->time_base = ist->st->time_base;
2134             switch(codec->codec_type) {
2135             case AVMEDIA_TYPE_AUDIO:
2136                 if(audio_volume != 256) {
2137                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2138                     ffmpeg_exit(1);
2139                 }
2140                 codec->channel_layout = icodec->channel_layout;
2141                 codec->sample_rate = icodec->sample_rate;
2142                 codec->channels = icodec->channels;
2143                 codec->frame_size = icodec->frame_size;
2144                 codec->audio_service_type = icodec->audio_service_type;
2145                 codec->block_align= icodec->block_align;
2146                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2147                     codec->block_align= 0;
2148                 if(codec->codec_id == CODEC_ID_AC3)
2149                     codec->block_align= 0;
2150                 break;
2151             case AVMEDIA_TYPE_VIDEO:
2152                 codec->pix_fmt = icodec->pix_fmt;
2153                 codec->width = icodec->width;
2154                 codec->height = icodec->height;
2155                 codec->has_b_frames = icodec->has_b_frames;
2156                 if (!codec->sample_aspect_ratio.num) {
2157                     codec->sample_aspect_ratio =
2158                     ost->st->sample_aspect_ratio =
2159                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2160                         ist->st->codec->sample_aspect_ratio.num ?
2161                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2162                 }
2163                 break;
2164             case AVMEDIA_TYPE_SUBTITLE:
2165                 codec->width = icodec->width;
2166                 codec->height = icodec->height;
2167                 break;
2168             case AVMEDIA_TYPE_DATA:
2169                 break;
2170             default:
2171                 abort();
2172             }
2173         } else {
2174             if (!ost->enc)
2175                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2176             switch(codec->codec_type) {
2177             case AVMEDIA_TYPE_AUDIO:
2178                 ost->fifo= av_fifo_alloc(1024);
2179                 if(!ost->fifo)
2180                     goto fail;
2181                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2182                 if (!codec->sample_rate) {
2183                     codec->sample_rate = icodec->sample_rate;
2184                     if (icodec->lowres)
2185                         codec->sample_rate >>= icodec->lowres;
2186                 }
2187                 choose_sample_rate(ost->st, ost->enc);
2188                 codec->time_base = (AVRational){1, codec->sample_rate};
2189                 if (!codec->channels)
2190                     codec->channels = icodec->channels;
2191                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2192                     codec->channel_layout = 0;
2193                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2194                 icodec->request_channels = codec->channels;
2195                 ist->decoding_needed = 1;
2196                 ost->encoding_needed = 1;
2197                 ost->resample_sample_fmt  = icodec->sample_fmt;
2198                 ost->resample_sample_rate = icodec->sample_rate;
2199                 ost->resample_channels    = icodec->channels;
2200                 break;
2201             case AVMEDIA_TYPE_VIDEO:
2202                 if (codec->pix_fmt == PIX_FMT_NONE)
2203                     codec->pix_fmt = icodec->pix_fmt;
2204                 choose_pixel_fmt(ost->st, ost->enc);
2205
2206                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2207                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2208                     ffmpeg_exit(1);
2209                 }
2210                 ost->video_resample = codec->width   != icodec->width  ||
2211                                       codec->height  != icodec->height ||
2212                                       codec->pix_fmt != icodec->pix_fmt;
2213                 if (ost->video_resample) {
2214 #if !CONFIG_AVFILTER
2215                     avcodec_get_frame_defaults(&ost->pict_tmp);
2216                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2217                                          codec->width, codec->height)) {
2218                         fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
2219                         ffmpeg_exit(1);
2220                     }
2221                     ost->img_resample_ctx = sws_getContext(
2222                         icodec->width,
2223                         icodec->height,
2224                             icodec->pix_fmt,
2225                             codec->width,
2226                             codec->height,
2227                             codec->pix_fmt,
2228                             ost->sws_flags, NULL, NULL, NULL);
2229                     if (ost->img_resample_ctx == NULL) {
2230                         fprintf(stderr, "Cannot get resampling context\n");
2231                         ffmpeg_exit(1);
2232                     }
2233 #endif
2234                     codec->bits_per_raw_sample= 0;
2235                 }
2236                 if (!codec->width || !codec->height) {
2237                     codec->width  = icodec->width;
2238                     codec->height = icodec->height;
2239                 }
2240                 ost->resample_height = icodec->height;
2241                 ost->resample_width  = icodec->width;
2242                 ost->resample_pix_fmt= icodec->pix_fmt;
2243                 ost->encoding_needed = 1;
2244                 ist->decoding_needed = 1;
2245
2246                 if (!ost->frame_rate.num)
2247                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2248                 if (ost->enc && ost->enc->supported_framerates && !force_fps) {
2249                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2250                     ost->frame_rate = ost->enc->supported_framerates[idx];
2251                 }
2252                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2253
2254 #if CONFIG_AVFILTER
2255                 if (configure_video_filters(ist, ost)) {
2256                     fprintf(stderr, "Error opening filters!\n");
2257                     exit(1);
2258                 }
2259 #endif
2260                 break;
2261             case AVMEDIA_TYPE_SUBTITLE:
2262                 ost->encoding_needed = 1;
2263                 ist->decoding_needed = 1;
2264                 break;
2265             default:
2266                 abort();
2267                 break;
2268             }
2269             /* two pass mode */
2270             if (ost->encoding_needed &&
2271                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2272                 char logfilename[1024];
2273                 FILE *f;
2274
2275                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2276                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2277                          i);
2278                 if (codec->flags & CODEC_FLAG_PASS1) {
2279                     f = fopen(logfilename, "wb");
2280                     if (!f) {
2281                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2282                         ffmpeg_exit(1);
2283                     }
2284                     ost->logfile = f;
2285                 } else {
2286                     char  *logbuffer;
2287                     size_t logbuffer_size;
2288                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2289                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2290                         ffmpeg_exit(1);
2291                     }
2292                     codec->stats_in = logbuffer;
2293                 }
2294             }
2295         }
2296         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2297             int size= codec->width * codec->height;
2298             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2299         }
2300     }
2301
2302     if (!bit_buffer)
2303         bit_buffer = av_malloc(bit_buffer_size);
2304     if (!bit_buffer) {
2305         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2306                 bit_buffer_size);
2307         ret = AVERROR(ENOMEM);
2308         goto fail;
2309     }
2310
2311     /* open each encoder */
2312     for(i=0;i<nb_ostreams;i++) {
2313         ost = ost_table[i];
2314         if (ost->encoding_needed) {
2315             AVCodec *codec = ost->enc;
2316             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2317             if (!codec) {
2318                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2319                          ost->st->codec->codec_id, ost->file_index, ost->index);
2320                 ret = AVERROR(EINVAL);
2321                 goto dump_format;
2322             }
2323             if (dec->subtitle_header) {
2324                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2325                 if (!ost->st->codec->subtitle_header) {
2326                     ret = AVERROR(ENOMEM);
2327                     goto dump_format;
2328                 }
2329                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2330                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2331             }
2332             if (avcodec_open(ost->st->codec, codec) < 0) {
2333                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2334                         ost->file_index, ost->index);
2335                 ret = AVERROR(EINVAL);
2336                 goto dump_format;
2337             }
2338             extra_size += ost->st->codec->extradata_size;
2339         }
2340     }
2341
2342     /* open each decoder */
2343     for (i = 0; i < nb_input_streams; i++) {
2344         ist = &input_streams[i];
2345         if (ist->decoding_needed) {
2346             AVCodec *codec = ist->dec;
2347             if (!codec)
2348                 codec = avcodec_find_decoder(ist->st->codec->codec_id);
2349             if (!codec) {
2350                 snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
2351                         ist->st->codec->codec_id, ist->file_index, ist->st->index);
2352                 ret = AVERROR(EINVAL);
2353                 goto dump_format;
2354             }
2355
2356             /* update requested sample format for the decoder based on the
2357                corresponding encoder sample format */
2358             for (j = 0; j < nb_ostreams; j++) {
2359                 ost = ost_table[j];
2360                 if (ost->source_index == i) {
2361                     update_sample_fmt(ist->st->codec, codec, ost->st->codec);
2362                     break;
2363                 }
2364             }
2365
2366             if (avcodec_open(ist->st->codec, codec) < 0) {
2367                 snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
2368                         ist->file_index, ist->st->index);
2369                 ret = AVERROR(EINVAL);
2370                 goto dump_format;
2371             }
2372             //if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2373             //    ist->st->codec->flags |= CODEC_FLAG_REPEAT_FIELD;
2374         }
2375     }
2376
2377     /* init pts */
2378     for (i = 0; i < nb_input_streams; i++) {
2379         AVStream *st;
2380         ist = &input_streams[i];
2381         st= ist->st;
2382         ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
2383         ist->next_pts = AV_NOPTS_VALUE;
2384         init_pts_correction(&ist->pts_ctx);
2385         ist->is_start = 1;
2386     }
2387
2388     /* set meta data information from input file if required */
2389     for (i=0;i<nb_meta_data_maps;i++) {
2390         AVFormatContext *files[2];
2391         AVDictionary    **meta[2];
2392         int j;
2393
2394 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
2395         if ((index) < 0 || (index) >= (nb_elems)) {\
2396             snprintf(error, sizeof(error), "Invalid %s index %d while processing metadata maps\n",\
2397                      (desc), (index));\
2398             ret = AVERROR(EINVAL);\
2399             goto dump_format;\
2400         }
2401
2402         int out_file_index = meta_data_maps[i][0].file;
2403         int in_file_index = meta_data_maps[i][1].file;
2404         if (in_file_index < 0 || out_file_index < 0)
2405             continue;
2406         METADATA_CHECK_INDEX(out_file_index, nb_output_files, "output file")
2407         METADATA_CHECK_INDEX(in_file_index, nb_input_files, "input file")
2408
2409         files[0] = output_files[out_file_index];
2410         files[1] = input_files[in_file_index].ctx;
2411
2412         for (j = 0; j < 2; j++) {
2413             MetadataMap *map = &meta_data_maps[i][j];
2414
2415             switch (map->type) {
2416             case 'g':
2417                 meta[j] = &files[j]->metadata;
2418                 break;
2419             case 's':
2420                 METADATA_CHECK_INDEX(map->index, files[j]->nb_streams, "stream")
2421                 meta[j] = &files[j]->streams[map->index]->metadata;
2422                 break;
2423             case 'c':
2424                 METADATA_CHECK_INDEX(map->index, files[j]->nb_chapters, "chapter")
2425                 meta[j] = &files[j]->chapters[map->index]->metadata;
2426                 break;
2427             case 'p':
2428                 METADATA_CHECK_INDEX(map->index, files[j]->nb_programs, "program")
2429                 meta[j] = &files[j]->programs[map->index]->metadata;
2430                 break;
2431             }
2432         }
2433
2434         av_dict_copy(meta[0], *meta[1], AV_DICT_DONT_OVERWRITE);
2435     }
2436
2437     /* copy global metadata by default */
2438     if (metadata_global_autocopy) {
2439
2440         for (i = 0; i < nb_output_files; i++)
2441             av_dict_copy(&output_files[i]->metadata, input_files[0].ctx->metadata,
2442                          AV_DICT_DONT_OVERWRITE);
2443     }
2444
2445     /* copy chapters according to chapter maps */
2446     for (i = 0; i < nb_chapter_maps; i++) {
2447         int infile  = chapter_maps[i].in_file;
2448         int outfile = chapter_maps[i].out_file;
2449
2450         if (infile < 0 || outfile < 0)
2451             continue;
2452         if (infile >= nb_input_files) {
2453             snprintf(error, sizeof(error), "Invalid input file index %d in chapter mapping.\n", infile);
2454             ret = AVERROR(EINVAL);
2455             goto dump_format;
2456         }
2457         if (outfile >= nb_output_files) {
2458             snprintf(error, sizeof(error), "Invalid output file index %d in chapter mapping.\n",outfile);
2459             ret = AVERROR(EINVAL);
2460             goto dump_format;
2461         }
2462         copy_chapters(infile, outfile);
2463     }
2464
2465     /* copy chapters from the first input file that has them*/
2466     if (!nb_chapter_maps)
2467         for (i = 0; i < nb_input_files; i++) {
2468             if (!input_files[i].ctx->nb_chapters)
2469                 continue;
2470
2471             for (j = 0; j < nb_output_files; j++)
2472                 if ((ret = copy_chapters(i, j)) < 0)
2473                     goto dump_format;
2474             break;
2475         }
2476
2477     /* open files and write file headers */
2478     for(i=0;i<nb_output_files;i++) {
2479         os = output_files[i];
2480         if (avformat_write_header(os, &output_opts[i]) < 0) {
2481             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2482             ret = AVERROR(EINVAL);
2483             goto dump_format;
2484         }
2485         assert_avoptions(output_opts[i]);
2486         if (strcmp(output_files[i]->oformat->name, "rtp")) {
2487             want_sdp = 0;
2488         }
2489     }
2490
2491  dump_format:
2492     /* dump the file output parameters - cannot be done before in case
2493        of stream copy */
2494     for(i=0;i<nb_output_files;i++) {
2495         av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2496     }
2497
2498     /* dump the stream mapping */
2499     if (verbose >= 0) {
2500         fprintf(stderr, "Stream mapping:\n");
2501         for(i=0;i<nb_ostreams;i++) {
2502             ost = ost_table[i];
2503             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2504                     input_streams[ost->source_index].file_index,
2505                     input_streams[ost->source_index].st->index,
2506                     ost->file_index,
2507                     ost->index);
2508             if (ost->sync_ist != &input_streams[ost->source_index])
2509                 fprintf(stderr, " [sync #%d.%d]",
2510                         ost->sync_ist->file_index,
2511                         ost->sync_ist->st->index);
2512             fprintf(stderr, "\n");
2513         }
2514     }
2515
2516     if (ret) {
2517         fprintf(stderr, "%s\n", error);
2518         goto fail;
2519     }
2520
2521     if (want_sdp) {
2522         print_sdp(output_files, nb_output_files);
2523     }
2524
2525     if (verbose >= 0)
2526         fprintf(stderr, "Press ctrl-c to stop encoding\n");
2527     term_init();
2528
2529     timer_start = av_gettime();
2530
2531     for(; received_sigterm == 0;) {
2532         int file_index, ist_index;
2533         AVPacket pkt;
2534         double ipts_min;
2535         double opts_min;
2536
2537     redo:
2538         ipts_min= 1e100;
2539         opts_min= 1e100;
2540
2541         /* select the stream that we must read now by looking at the
2542            smallest output pts */
2543         file_index = -1;
2544         for(i=0;i<nb_ostreams;i++) {
2545             double ipts, opts;
2546             ost = ost_table[i];
2547             os = output_files[ost->file_index];
2548             ist = &input_streams[ost->source_index];
2549             if(ist->is_past_recording_time || no_packet[ist->file_index])
2550                 continue;
2551                 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2552             ipts = (double)ist->pts;
2553             if (!input_files[ist->file_index].eof_reached){
2554                 if(ipts < ipts_min) {
2555                     ipts_min = ipts;
2556                     if(input_sync ) file_index = ist->file_index;
2557                 }
2558                 if(opts < opts_min) {
2559                     opts_min = opts;
2560                     if(!input_sync) file_index = ist->file_index;
2561                 }
2562             }
2563             if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
2564                 file_index= -1;
2565                 break;
2566             }
2567         }
2568         /* if none, if is finished */
2569         if (file_index < 0) {
2570             if(no_packet_count){
2571                 no_packet_count=0;
2572                 memset(no_packet, 0, sizeof(no_packet));
2573                 usleep(10000);
2574                 continue;
2575             }
2576             break;
2577         }
2578
2579         /* finish if limit size exhausted */
2580         if (limit_filesize != 0 && limit_filesize <= avio_tell(output_files[0]->pb))
2581             break;
2582
2583         /* read a frame from it and output it in the fifo */
2584         is = input_files[file_index].ctx;
2585         ret= av_read_frame(is, &pkt);
2586         if(ret == AVERROR(EAGAIN)){
2587             no_packet[file_index]=1;
2588             no_packet_count++;
2589             continue;
2590         }
2591         if (ret < 0) {
2592             input_files[file_index].eof_reached = 1;
2593             if (opt_shortest)
2594                 break;
2595             else
2596                 continue;
2597         }
2598
2599         no_packet_count=0;
2600         memset(no_packet, 0, sizeof(no_packet));
2601
2602         if (do_pkt_dump) {
2603             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2604                              is->streams[pkt.stream_index]);
2605         }
2606         /* the following test is needed in case new streams appear
2607            dynamically in stream : we ignore them */
2608         if (pkt.stream_index >= input_files[file_index].ctx->nb_streams)
2609             goto discard_packet;
2610         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2611         ist = &input_streams[ist_index];
2612         if (ist->discard)
2613             goto discard_packet;
2614
2615         if (pkt.dts != AV_NOPTS_VALUE)
2616             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2617         if (pkt.pts != AV_NOPTS_VALUE)
2618             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2619
2620         if (pkt.stream_index < nb_input_files_ts_scale[file_index]
2621             && input_files_ts_scale[file_index][pkt.stream_index]){
2622             if(pkt.pts != AV_NOPTS_VALUE)
2623                 pkt.pts *= input_files_ts_scale[file_index][pkt.stream_index];
2624             if(pkt.dts != AV_NOPTS_VALUE)
2625                 pkt.dts *= input_files_ts_scale[file_index][pkt.stream_index];
2626         }
2627
2628 //        fprintf(stderr, "next:%"PRId64" dts:%"PRId64" off:%"PRId64" %d\n", ist->next_pts, pkt.dts, input_files[ist->file_index].ts_offset, ist->st->codec->codec_type);
2629         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2630             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2631             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2632             int64_t delta= pkt_dts - ist->next_pts;
2633             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2634                 input_files[ist->file_index].ts_offset -= delta;
2635                 if (verbose > 2)
2636                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2637                             delta, input_files[ist->file_index].ts_offset);
2638                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2639                 if(pkt.pts != AV_NOPTS_VALUE)
2640                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2641             }
2642         }
2643
2644         /* finish if recording time exhausted */
2645         if (recording_time != INT64_MAX &&
2646             av_compare_ts(pkt.pts, ist->st->time_base, recording_time + start_time, (AVRational){1, 1000000}) >= 0) {
2647             ist->is_past_recording_time = 1;
2648             goto discard_packet;
2649         }
2650
2651         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2652         if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
2653
2654             if (verbose >= 0)
2655                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2656                         ist->file_index, ist->st->index);
2657             if (exit_on_error)
2658                 ffmpeg_exit(1);
2659             av_free_packet(&pkt);
2660             goto redo;
2661         }
2662
2663     discard_packet:
2664         av_free_packet(&pkt);
2665
2666         /* dump report by using the output first video and audio streams */
2667         print_report(output_files, ost_table, nb_ostreams, 0);
2668     }
2669
2670     /* at the end of stream, we must flush the decoder buffers */
2671     for (i = 0; i < nb_input_streams; i++) {
2672         ist = &input_streams[i];
2673         if (ist->decoding_needed) {
2674             output_packet(ist, i, ost_table, nb_ostreams, NULL);
2675         }
2676     }
2677
2678     term_exit();
2679
2680     /* write the trailer if needed and close file */
2681     for(i=0;i<nb_output_files;i++) {
2682         os = output_files[i];
2683         av_write_trailer(os);
2684     }
2685
2686     /* dump report by using the first video and audio streams */
2687     print_report(output_files, ost_table, nb_ostreams, 1);
2688
2689     /* close each encoder */
2690     for(i=0;i<nb_ostreams;i++) {
2691         ost = ost_table[i];
2692         if (ost->encoding_needed) {
2693             av_freep(&ost->st->codec->stats_in);
2694             avcodec_close(ost->st->codec);
2695         }
2696 #if CONFIG_AVFILTER
2697         avfilter_graph_free(&ost->graph);
2698 #endif
2699     }
2700
2701     /* close each decoder */
2702     for (i = 0; i < nb_input_streams; i++) {
2703         ist = &input_streams[i];
2704         if (ist->decoding_needed) {
2705             avcodec_close(ist->st->codec);
2706         }
2707     }
2708
2709     /* finished ! */
2710     ret = 0;
2711
2712  fail:
2713     av_freep(&bit_buffer);
2714
2715     if (ost_table) {
2716         for(i=0;i<nb_ostreams;i++) {
2717             ost = ost_table[i];
2718             if (ost) {
2719                 if (ost->st->stream_copy)
2720                     av_freep(&ost->st->codec->extradata);
2721                 if (ost->logfile) {
2722                     fclose(ost->logfile);
2723                     ost->logfile = NULL;
2724                 }
2725                 av_fifo_free(ost->fifo); /* works even if fifo is not
2726                                              initialized but set to zero */
2727                 av_freep(&ost->st->codec->subtitle_header);
2728                 av_free(ost->pict_tmp.data[0]);
2729                 av_free(ost->forced_kf_pts);
2730                 if (ost->video_resample)
2731                     sws_freeContext(ost->img_resample_ctx);
2732                 if (ost->resample)
2733                     audio_resample_close(ost->resample);
2734                 if (ost->reformat_ctx)
2735                     av_audio_convert_free(ost->reformat_ctx);
2736                 av_free(ost);
2737             }
2738         }
2739         av_free(ost_table);
2740     }
2741     return ret;
2742 }
2743
2744 static int opt_format(const char *opt, const char *arg)
2745 {
2746     last_asked_format = arg;
2747     return 0;
2748 }
2749
2750 static int opt_video_rc_override_string(const char *opt, const char *arg)
2751 {
2752     video_rc_override_string = arg;
2753     return 0;
2754 }
2755
2756 static int opt_me_threshold(const char *opt, const char *arg)
2757 {
2758     me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2759     return 0;
2760 }
2761
2762 static int opt_verbose(const char *opt, const char *arg)
2763 {
2764     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2765     return 0;
2766 }
2767
2768 static int opt_frame_rate(const char *opt, const char *arg)
2769 {
2770     if (av_parse_video_rate(&frame_rate, arg) < 0) {
2771         fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2772         ffmpeg_exit(1);
2773     }
2774     return 0;
2775 }
2776
2777 static int opt_bitrate(const char *opt, const char *arg)
2778 {
2779     int codec_type = opt[0]=='a' ? AVMEDIA_TYPE_AUDIO : AVMEDIA_TYPE_VIDEO;
2780
2781     opt_default(opt, arg);
2782
2783     if (av_get_int(avcodec_opts[codec_type], "b", NULL) < 1000)
2784         fprintf(stderr, "WARNING: The bitrate parameter is set too low. It takes bits/s as argument, not kbits/s\n");
2785
2786     return 0;
2787 }
2788
2789 static int opt_frame_crop(const char *opt, const char *arg)
2790 {
2791     fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
2792     return AVERROR(EINVAL);
2793 }
2794
2795 static int opt_frame_size(const char *opt, const char *arg)
2796 {
2797     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2798         fprintf(stderr, "Incorrect frame size\n");
2799         return AVERROR(EINVAL);
2800     }
2801     return 0;
2802 }
2803
2804 static int opt_pad(const char *opt, const char *arg) {
2805     fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2806     return -1;
2807 }
2808
2809 static int opt_frame_pix_fmt(const char *opt, const char *arg)
2810 {
2811     if (strcmp(arg, "list")) {
2812         frame_pix_fmt = av_get_pix_fmt(arg);
2813         if (frame_pix_fmt == PIX_FMT_NONE) {
2814             fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2815             return AVERROR(EINVAL);
2816         }
2817     } else {
2818         show_pix_fmts();
2819         ffmpeg_exit(0);
2820     }
2821     return 0;
2822 }
2823
2824 static int opt_frame_aspect_ratio(const char *opt, const char *arg)
2825 {
2826     int x = 0, y = 0;
2827     double ar = 0;
2828     const char *p;
2829     char *end;
2830
2831     p = strchr(arg, ':');
2832     if (p) {
2833         x = strtol(arg, &end, 10);
2834         if (end == p)
2835             y = strtol(end+1, &end, 10);
2836         if (x > 0 && y > 0)
2837             ar = (double)x / (double)y;
2838     } else
2839         ar = strtod(arg, NULL);
2840
2841     if (!ar) {
2842         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2843         return AVERROR(EINVAL);
2844     }
2845     frame_aspect_ratio = ar;
2846     return 0;
2847 }
2848
2849 static int opt_metadata(const char *opt, const char *arg)
2850 {
2851     char *mid= strchr(arg, '=');
2852
2853     if(!mid){
2854         fprintf(stderr, "Missing =\n");
2855         ffmpeg_exit(1);
2856     }
2857     *mid++= 0;
2858
2859     av_dict_set(&metadata, arg, mid, 0);
2860
2861     return 0;
2862 }
2863
2864 static int opt_qscale(const char *opt, const char *arg)
2865 {
2866     video_qscale = parse_number_or_die(opt, arg, OPT_FLOAT, 0, 255);
2867     if (video_qscale == 0) {
2868         fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2869         return AVERROR(EINVAL);
2870     }
2871     return 0;
2872 }
2873
2874 static int opt_top_field_first(const char *opt, const char *arg)
2875 {
2876     top_field_first = parse_number_or_die(opt, arg, OPT_INT, 0, 1);
2877     return 0;
2878 }
2879
2880 static int opt_thread_count(const char *opt, const char *arg)
2881 {
2882     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2883 #if !HAVE_THREADS
2884     if (verbose >= 0)
2885         fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2886 #endif
2887     return 0;
2888 }
2889
2890 static int opt_audio_sample_fmt(const char *opt, const char *arg)
2891 {
2892     if (strcmp(arg, "list")) {
2893         audio_sample_fmt = av_get_sample_fmt(arg);
2894         if (audio_sample_fmt == AV_SAMPLE_FMT_NONE) {
2895             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg);
2896             return AVERROR(EINVAL);
2897         }
2898     } else {
2899         int i;
2900         char fmt_str[128];
2901         for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
2902             printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
2903         ffmpeg_exit(0);
2904     }
2905     return 0;
2906 }
2907
2908 static int opt_audio_rate(const char *opt, const char *arg)
2909 {
2910     audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2911     return 0;
2912 }
2913
2914 static int opt_audio_channels(const char *opt, const char *arg)
2915 {
2916     audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2917     return 0;
2918 }
2919
2920 static int opt_video_channel(const char *opt, const char *arg)
2921 {
2922     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
2923     opt_default("channel", arg);
2924     return 0;
2925 }
2926
2927 static int opt_video_standard(const char *opt, const char *arg)
2928 {
2929     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
2930     opt_default("standard", arg);
2931     return 0;
2932 }
2933
2934 static int opt_codec(int *pstream_copy, char **pcodec_name,
2935                       int codec_type, const char *arg)
2936 {
2937     av_freep(pcodec_name);
2938     if (!strcmp(arg, "copy")) {
2939         *pstream_copy = 1;
2940     } else {
2941         *pcodec_name = av_strdup(arg);
2942     }
2943     return 0;
2944 }
2945
2946 static int opt_audio_codec(const char *opt, const char *arg)
2947 {
2948     return opt_codec(&audio_stream_copy, &audio_codec_name, AVMEDIA_TYPE_AUDIO, arg);
2949 }
2950
2951 static int opt_video_codec(const char *opt, const char *arg)
2952 {
2953     return opt_codec(&video_stream_copy, &video_codec_name, AVMEDIA_TYPE_VIDEO, arg);
2954 }
2955
2956 static int opt_subtitle_codec(const char *opt, const char *arg)
2957 {
2958     return opt_codec(&subtitle_stream_copy, &subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, arg);
2959 }
2960
2961 static int opt_data_codec(const char *opt, const char *arg)
2962 {
2963     return opt_codec(&data_stream_copy, &data_codec_name, AVMEDIA_TYPE_DATA, arg);
2964 }
2965
2966 static int opt_codec_tag(const char *opt, const char *arg)
2967 {
2968     char *tail;
2969     uint32_t *codec_tag;
2970
2971     codec_tag = !strcmp(opt, "atag") ? &audio_codec_tag :
2972                 !strcmp(opt, "vtag") ? &video_codec_tag :
2973                 !strcmp(opt, "stag") ? &subtitle_codec_tag : NULL;
2974     if (!codec_tag)
2975         return -1;
2976
2977     *codec_tag = strtol(arg, &tail, 0);
2978     if (!tail || *tail)
2979         *codec_tag = AV_RL32(arg);
2980
2981     return 0;
2982 }
2983
2984 static int opt_map(const char *opt, const char *arg)
2985 {
2986     StreamMap *m;
2987     char *p;
2988
2989     stream_maps = grow_array(stream_maps, sizeof(*stream_maps), &nb_stream_maps, nb_stream_maps + 1);
2990     m = &stream_maps[nb_stream_maps-1];
2991
2992     m->file_index = strtol(arg, &p, 0);
2993     if (*p)
2994         p++;
2995
2996     m->stream_index = strtol(p, &p, 0);
2997     if (*p) {
2998         p++;
2999         m->sync_file_index = strtol(p, &p, 0);
3000         if (*p)
3001             p++;
3002         m->sync_stream_index = strtol(p, &p, 0);
3003     } else {
3004         m->sync_file_index = m->file_index;
3005         m->sync_stream_index = m->stream_index;
3006     }
3007     return 0;
3008 }
3009
3010 static void parse_meta_type(char *arg, char *type, int *index, char **endptr)
3011 {
3012     *endptr = arg;
3013     if (*arg == ',') {
3014         *type = *(++arg);
3015         switch (*arg) {
3016         case 'g':
3017             break;
3018         case 's':
3019         case 'c':
3020         case 'p':
3021             *index = strtol(++arg, endptr, 0);
3022             break;
3023         default:
3024             fprintf(stderr, "Invalid metadata type %c.\n", *arg);
3025             ffmpeg_exit(1);
3026         }
3027     } else
3028         *type = 'g';
3029 }
3030
3031 static int opt_map_metadata(const char *opt, const char *arg)
3032 {
3033     MetadataMap *m, *m1;
3034     char *p;
3035
3036     meta_data_maps = grow_array(meta_data_maps, sizeof(*meta_data_maps),
3037                                 &nb_meta_data_maps, nb_meta_data_maps + 1);
3038
3039     m = &meta_data_maps[nb_meta_data_maps - 1][0];
3040     m->file = strtol(arg, &p, 0);
3041     parse_meta_type(p, &m->type, &m->index, &p);
3042     if (*p)
3043         p++;
3044
3045     m1 = &meta_data_maps[nb_meta_data_maps - 1][1];
3046     m1->file = strtol(p, &p, 0);
3047     parse_meta_type(p, &m1->type, &m1->index, &p);
3048
3049     if (m->type == 'g' || m1->type == 'g')
3050         metadata_global_autocopy = 0;
3051     if (m->type == 's' || m1->type == 's')
3052         metadata_streams_autocopy = 0;
3053     if (m->type == 'c' || m1->type == 'c')
3054         metadata_chapters_autocopy = 0;
3055
3056     return 0;
3057 }
3058
3059 static int opt_map_meta_data(const char *opt, const char *arg)
3060 {
3061     fprintf(stderr, "-map_meta_data is deprecated and will be removed soon. "
3062                     "Use -map_metadata instead.\n");
3063     return opt_map_metadata(opt, arg);
3064 }
3065
3066 static int opt_map_chapters(const char *opt, const char *arg)
3067 {
3068     ChapterMap *c;
3069     char *p;
3070
3071     chapter_maps = grow_array(chapter_maps, sizeof(*chapter_maps), &nb_chapter_maps,
3072                               nb_chapter_maps + 1);
3073     c = &chapter_maps[nb_chapter_maps - 1];
3074     c->out_file = strtol(arg, &p, 0);
3075     if (*p)
3076         p++;
3077
3078     c->in_file = strtol(p, &p, 0);
3079     return 0;
3080 }
3081
3082 static int opt_input_ts_scale(const char *opt, const char *arg)
3083 {
3084     unsigned int stream;
3085     double scale;
3086     char *p;
3087
3088     stream = strtol(arg, &p, 0);
3089     if (*p)
3090         p++;
3091     scale= strtod(p, &p);
3092
3093     if(stream >= MAX_STREAMS)
3094         ffmpeg_exit(1);
3095
3096     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);
3097     input_files_ts_scale[nb_input_files][stream]= scale;
3098     return 0;
3099 }
3100
3101 static int opt_recording_time(const char *opt, const char *arg)
3102 {
3103     recording_time = parse_time_or_die(opt, arg, 1);
3104     return 0;
3105 }
3106
3107 static int opt_start_time(const char *opt, const char *arg)
3108 {
3109     start_time = parse_time_or_die(opt, arg, 1);
3110     return 0;
3111 }
3112
3113 static int opt_recording_timestamp(const char *opt, const char *arg)
3114 {
3115     recording_timestamp = parse_time_or_die(opt, arg, 0) / 1000000;
3116     return 0;
3117 }
3118
3119 static int opt_input_ts_offset(const char *opt, const char *arg)
3120 {
3121     input_ts_offset = parse_time_or_die(opt, arg, 1);
3122     return 0;
3123 }
3124
3125 static enum CodecID find_codec_or_die(const char *name, int type, int encoder, int strict)
3126 {
3127     const char *codec_string = encoder ? "encoder" : "decoder";
3128     AVCodec *codec;
3129
3130     if(!name)
3131         return CODEC_ID_NONE;
3132     codec = encoder ?
3133         avcodec_find_encoder_by_name(name) :
3134         avcodec_find_decoder_by_name(name);
3135     if(!codec) {
3136         fprintf(stderr, "Unknown %s '%s'\n", codec_string, name);
3137         ffmpeg_exit(1);
3138     }
3139     if(codec->type != type) {
3140         fprintf(stderr, "Invalid %s type '%s'\n", codec_string, name);
3141         ffmpeg_exit(1);
3142     }
3143     if(codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
3144        strict > FF_COMPLIANCE_EXPERIMENTAL) {
3145         fprintf(stderr, "%s '%s' is experimental and might produce bad "
3146                 "results.\nAdd '-strict experimental' if you want to use it.\n",
3147                 codec_string, codec->name);
3148         codec = encoder ?
3149             avcodec_find_encoder(codec->id) :
3150             avcodec_find_decoder(codec->id);
3151         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
3152             fprintf(stderr, "Or use the non experimental %s '%s'.\n",
3153                     codec_string, codec->name);
3154         ffmpeg_exit(1);
3155     }
3156     return codec->id;
3157 }
3158
3159 static int opt_input_file(const char *opt, const char *filename)
3160 {
3161     AVFormatContext *ic;
3162     AVInputFormat *file_iformat = NULL;
3163     int err, i, ret, rfps, rfps_base;
3164     int64_t timestamp;
3165     uint8_t buf[128];
3166
3167     if (last_asked_format) {
3168         if (!(file_iformat = av_find_input_format(last_asked_format))) {
3169             fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
3170             ffmpeg_exit(1);
3171         }
3172         last_asked_format = NULL;
3173     }
3174
3175     if (!strcmp(filename, "-"))
3176         filename = "pipe:";
3177
3178     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3179                     !strcmp(filename, "/dev/stdin");
3180
3181     /* get default parameters from command line */
3182     ic = avformat_alloc_context();
3183     if (!ic) {
3184         print_error(filename, AVERROR(ENOMEM));
3185         ffmpeg_exit(1);
3186     }
3187     if (audio_sample_rate) {
3188         snprintf(buf, sizeof(buf), "%d", audio_sample_rate);
3189         av_dict_set(&format_opts, "sample_rate", buf, 0);
3190     }
3191     if (audio_channels) {
3192         snprintf(buf, sizeof(buf), "%d", audio_channels);
3193         av_dict_set(&format_opts, "channels", buf, 0);
3194     }
3195     if (frame_rate.num) {
3196         snprintf(buf, sizeof(buf), "%d/%d", frame_rate.num, frame_rate.den);
3197         av_dict_set(&format_opts, "framerate", buf, 0);
3198     }
3199     if (frame_width && frame_height) {
3200         snprintf(buf, sizeof(buf), "%dx%d", frame_width, frame_height);
3201         av_dict_set(&format_opts, "video_size", buf, 0);
3202     }
3203     if (frame_pix_fmt != PIX_FMT_NONE)
3204         av_dict_set(&format_opts, "pixel_format", av_get_pix_fmt_name(frame_pix_fmt), 0);
3205
3206     ic->video_codec_id   =
3207         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0,
3208                           avcodec_opts[AVMEDIA_TYPE_VIDEO   ]->strict_std_compliance);
3209     ic->audio_codec_id   =
3210         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0,
3211                           avcodec_opts[AVMEDIA_TYPE_AUDIO   ]->strict_std_compliance);
3212     ic->subtitle_codec_id=
3213         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0,
3214                           avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->strict_std_compliance);
3215     ic->flags |= AVFMT_FLAG_NONBLOCK;
3216
3217     /* open the input file with generic libav function */
3218     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3219     if (err < 0) {
3220         print_error(filename, err);
3221         ffmpeg_exit(1);
3222     }
3223     assert_avoptions(format_opts);
3224
3225     if(opt_programid) {
3226         int i, j;
3227         int found=0;
3228         for(i=0; i<ic->nb_streams; i++){
3229             ic->streams[i]->discard= AVDISCARD_ALL;
3230         }
3231         for(i=0; i<ic->nb_programs; i++){
3232             AVProgram *p= ic->programs[i];
3233             if(p->id != opt_programid){
3234                 p->discard = AVDISCARD_ALL;
3235             }else{
3236                 found=1;
3237                 for(j=0; j<p->nb_stream_indexes; j++){
3238                     ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
3239                 }
3240             }
3241         }
3242         if(!found){
3243             fprintf(stderr, "Specified program id not found\n");
3244             ffmpeg_exit(1);
3245         }
3246         opt_programid=0;
3247     }
3248
3249     if (loop_input) {
3250         av_log(NULL, AV_LOG_WARNING, "-loop_input is deprecated, use -loop 1\n");
3251         ic->loop_input = loop_input;
3252     }
3253
3254     /* Set AVCodecContext options so they will be seen by av_find_stream_info() */
3255     for (i = 0; i < ic->nb_streams; i++) {
3256         AVCodecContext *dec = ic->streams[i]->codec;
3257         switch (dec->codec_type) {
3258         case AVMEDIA_TYPE_AUDIO:
3259             set_context_opts(dec, avcodec_opts[AVMEDIA_TYPE_AUDIO],
3260                              AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM,
3261                              NULL);
3262             break;
3263         case AVMEDIA_TYPE_VIDEO:
3264             set_context_opts(dec, avcodec_opts[AVMEDIA_TYPE_VIDEO],
3265                              AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM,
3266                              NULL);
3267             break;
3268         }
3269     }
3270
3271     /* If not enough info to get the stream parameters, we decode the
3272        first frames to get it. (used in mpeg case for example) */
3273     ret = av_find_stream_info(ic);
3274     if (ret < 0 && verbose >= 0) {
3275         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3276         av_close_input_file(ic);
3277         ffmpeg_exit(1);
3278     }
3279
3280     timestamp = start_time;
3281     /* add the stream start time */
3282     if (ic->start_time != AV_NOPTS_VALUE)
3283         timestamp += ic->start_time;
3284
3285     /* if seeking requested, we execute it */
3286     if (start_time != 0) {
3287         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3288         if (ret < 0) {
3289             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3290                     filename, (double)timestamp / AV_TIME_BASE);
3291         }
3292         /* reset seek info */
3293         start_time = 0;
3294     }
3295
3296     /* update the current parameters so that they match the one of the input stream */
3297     for(i=0;i<ic->nb_streams;i++) {
3298         AVStream *st = ic->streams[i];
3299         AVCodecContext *dec = st->codec;
3300         InputStream *ist;
3301
3302         dec->thread_count = thread_count;
3303
3304         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3305         ist = &input_streams[nb_input_streams - 1];
3306         ist->st = st;
3307         ist->file_index = nb_input_files;
3308         ist->discard = 1;
3309
3310         switch (dec->codec_type) {
3311         case AVMEDIA_TYPE_AUDIO:
3312             ist->dec = avcodec_find_decoder_by_name(audio_codec_name);
3313             set_context_opts(dec, avcodec_opts[AVMEDIA_TYPE_AUDIO], AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM, ist->dec);
3314             channel_layout    = dec->channel_layout;
3315             audio_sample_fmt  = dec->sample_fmt;
3316             if(audio_disable)
3317                 st->discard= AVDISCARD_ALL;
3318             break;
3319         case AVMEDIA_TYPE_VIDEO:
3320             ist->dec = avcodec_find_decoder_by_name(video_codec_name);
3321             set_context_opts(dec, avcodec_opts[AVMEDIA_TYPE_VIDEO], AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM, ist->dec);
3322             rfps      = ic->streams[i]->r_frame_rate.num;
3323             rfps_base = ic->streams[i]->r_frame_rate.den;
3324             if (dec->lowres) {
3325                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3326                 dec->height >>= dec->lowres;
3327                 dec->width  >>= dec->lowres;
3328             }
3329             if(me_threshold)
3330                 dec->debug |= FF_DEBUG_MV;
3331
3332             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3333
3334                 if (verbose >= 0)
3335                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3336                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3337
3338                     (float)rfps / rfps_base, rfps, rfps_base);
3339             }
3340
3341             if(video_disable)
3342                 st->discard= AVDISCARD_ALL;
3343             else if(video_discard)
3344                 st->discard= video_discard;
3345             break;
3346         case AVMEDIA_TYPE_DATA:
3347             break;
3348         case AVMEDIA_TYPE_SUBTITLE:
3349             ist->dec = avcodec_find_decoder_by_name(subtitle_codec_name);
3350             if(subtitle_disable)
3351                 st->discard = AVDISCARD_ALL;
3352             break;
3353         case AVMEDIA_TYPE_ATTACHMENT:
3354         case AVMEDIA_TYPE_UNKNOWN:
3355             break;
3356         default:
3357             abort();
3358         }
3359     }
3360
3361     /* dump the file content */
3362     if (verbose >= 0)
3363         av_dump_format(ic, nb_input_files, filename, 0);
3364
3365     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3366     input_files[nb_input_files - 1].ctx        = ic;
3367     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3368     input_files[nb_input_files - 1].ts_offset  = input_ts_offset - (copy_ts ? 0 : timestamp);
3369
3370     frame_rate    = (AVRational){0, 0};
3371     frame_pix_fmt = PIX_FMT_NONE;
3372     frame_height = 0;
3373     frame_width  = 0;
3374     audio_sample_rate = 0;
3375     audio_channels    = 0;
3376
3377     av_freep(&video_codec_name);
3378     av_freep(&audio_codec_name);
3379     av_freep(&subtitle_codec_name);
3380     uninit_opts();
3381     init_opts();
3382     return 0;
3383 }
3384
3385 static void check_inputs(int *has_video_ptr,
3386                          int *has_audio_ptr,
3387                          int *has_subtitle_ptr,
3388                          int *has_data_ptr)
3389 {
3390     int has_video, has_audio, has_subtitle, has_data, i, j;
3391     AVFormatContext *ic;
3392
3393     has_video = 0;
3394     has_audio = 0;
3395     has_subtitle = 0;
3396     has_data = 0;
3397
3398     for(j=0;j<nb_input_files;j++) {
3399         ic = input_files[j].ctx;
3400         for(i=0;i<ic->nb_streams;i++) {
3401             AVCodecContext *enc = ic->streams[i]->codec;
3402             switch(enc->codec_type) {
3403             case AVMEDIA_TYPE_AUDIO:
3404                 has_audio = 1;
3405                 break;
3406             case AVMEDIA_TYPE_VIDEO:
3407                 has_video = 1;
3408                 break;
3409             case AVMEDIA_TYPE_SUBTITLE:
3410                 has_subtitle = 1;
3411                 break;
3412             case AVMEDIA_TYPE_DATA:
3413             case AVMEDIA_TYPE_ATTACHMENT:
3414             case AVMEDIA_TYPE_UNKNOWN:
3415                 has_data = 1;
3416                 break;
3417             default:
3418                 abort();
3419             }
3420         }
3421     }
3422     *has_video_ptr = has_video;
3423     *has_audio_ptr = has_audio;
3424     *has_subtitle_ptr = has_subtitle;
3425     *has_data_ptr = has_data;
3426 }
3427
3428 static void new_video_stream(AVFormatContext *oc, int file_idx)
3429 {
3430     AVStream *st;
3431     OutputStream *ost;
3432     AVCodecContext *video_enc;
3433     enum CodecID codec_id = CODEC_ID_NONE;
3434     AVCodec *codec= NULL;
3435
3436     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3437     if (!st) {
3438         fprintf(stderr, "Could not alloc stream\n");
3439         ffmpeg_exit(1);
3440     }
3441     ost = new_output_stream(oc, file_idx);
3442
3443     if(!video_stream_copy){
3444         if (video_codec_name) {
3445             codec_id = find_codec_or_die(video_codec_name, AVMEDIA_TYPE_VIDEO, 1,
3446                                          avcodec_opts[AVMEDIA_TYPE_VIDEO]->strict_std_compliance);
3447             codec = avcodec_find_encoder_by_name(video_codec_name);
3448             ost->enc = codec;
3449         } else {
3450             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_VIDEO);
3451             codec = avcodec_find_encoder(codec_id);
3452         }
3453
3454         ost->frame_aspect_ratio = frame_aspect_ratio;
3455         frame_aspect_ratio = 0;
3456 #if CONFIG_AVFILTER
3457         ost->avfilter= vfilters;
3458         vfilters = NULL;
3459 #endif
3460     }
3461
3462     avcodec_get_context_defaults3(st->codec, codec);
3463     ost->bitstream_filters = video_bitstream_filters;
3464     video_bitstream_filters= NULL;
3465
3466     st->codec->thread_count= thread_count;
3467
3468     video_enc = st->codec;
3469
3470     if(video_codec_tag)
3471         video_enc->codec_tag= video_codec_tag;
3472
3473     if(oc->oformat->flags & AVFMT_GLOBALHEADER) {
3474         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3475         avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3476     }
3477
3478     if (video_stream_copy) {
3479         st->stream_copy = 1;
3480         video_enc->codec_type = AVMEDIA_TYPE_VIDEO;
3481         video_enc->sample_aspect_ratio =
3482         st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3483     } else {
3484         const char *p;
3485         int i;
3486
3487         if (frame_rate.num)
3488             ost->frame_rate = frame_rate;
3489         video_enc->codec_id = codec_id;
3490         set_context_opts(video_enc, avcodec_opts[AVMEDIA_TYPE_VIDEO], AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3491
3492         video_enc->width = frame_width;
3493         video_enc->height = frame_height;
3494         video_enc->pix_fmt = frame_pix_fmt;
3495         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3496
3497         if (intra_only)
3498             video_enc->gop_size = 0;
3499         if (video_qscale || same_quality) {
3500             video_enc->flags |= CODEC_FLAG_QSCALE;
3501             video_enc->global_quality = FF_QP2LAMBDA * video_qscale;
3502         }
3503
3504         if(intra_matrix)
3505             video_enc->intra_matrix = intra_matrix;
3506         if(inter_matrix)
3507             video_enc->inter_matrix = inter_matrix;
3508
3509         p= video_rc_override_string;
3510         for(i=0; p; i++){
3511             int start, end, q;
3512             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3513             if(e!=3){
3514                 fprintf(stderr, "error parsing rc_override\n");
3515                 ffmpeg_exit(1);
3516             }
3517             video_enc->rc_override=
3518                 av_realloc(video_enc->rc_override,
3519                            sizeof(RcOverride)*(i+1));
3520             video_enc->rc_override[i].start_frame= start;
3521             video_enc->rc_override[i].end_frame  = end;
3522             if(q>0){
3523                 video_enc->rc_override[i].qscale= q;
3524                 video_enc->rc_override[i].quality_factor= 1.0;
3525             }
3526             else{
3527                 video_enc->rc_override[i].qscale= 0;
3528                 video_enc->rc_override[i].quality_factor= -q/100.0;
3529             }
3530             p= strchr(p, '/');
3531             if(p) p++;
3532         }
3533         video_enc->rc_override_count=i;
3534         if (!video_enc->rc_initial_buffer_occupancy)
3535             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3536         video_enc->me_threshold= me_threshold;
3537         video_enc->intra_dc_precision= intra_dc_precision - 8;
3538
3539         if (do_psnr)
3540             video_enc->flags|= CODEC_FLAG_PSNR;
3541
3542         /* two pass mode */
3543         if (do_pass) {
3544             if (do_pass == 1) {
3545                 video_enc->flags |= CODEC_FLAG_PASS1;
3546             } else {
3547                 video_enc->flags |= CODEC_FLAG_PASS2;
3548             }
3549         }
3550
3551         if (forced_key_frames)
3552             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3553     }
3554     if (video_language) {
3555         av_dict_set(&st->metadata, "language", video_language, 0);
3556         av_freep(&video_language);
3557     }
3558
3559     /* reset some key parameters */
3560     video_disable = 0;
3561     av_freep(&video_codec_name);
3562     av_freep(&forced_key_frames);
3563     video_stream_copy = 0;
3564     frame_pix_fmt = PIX_FMT_NONE;
3565 }
3566
3567 static void new_audio_stream(AVFormatContext *oc, int file_idx)
3568 {
3569     AVStream *st;
3570     OutputStream *ost;
3571     AVCodec *codec= NULL;
3572     AVCodecContext *audio_enc;
3573     enum CodecID codec_id = CODEC_ID_NONE;
3574
3575     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3576     if (!st) {
3577         fprintf(stderr, "Could not alloc stream\n");
3578         ffmpeg_exit(1);
3579     }
3580     ost = new_output_stream(oc, file_idx);
3581
3582     if(!audio_stream_copy){
3583         if (audio_codec_name) {
3584             codec_id = find_codec_or_die(audio_codec_name, AVMEDIA_TYPE_AUDIO, 1,
3585                                          avcodec_opts[AVMEDIA_TYPE_AUDIO]->strict_std_compliance);
3586             codec = avcodec_find_encoder_by_name(audio_codec_name);
3587             ost->enc = codec;
3588         } else {
3589             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_AUDIO);
3590             codec = avcodec_find_encoder(codec_id);
3591         }
3592     }
3593
3594     avcodec_get_context_defaults3(st->codec, codec);
3595
3596     ost->bitstream_filters = audio_bitstream_filters;
3597     audio_bitstream_filters= NULL;
3598
3599     st->codec->thread_count= thread_count;
3600
3601     audio_enc = st->codec;
3602     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3603
3604     if(audio_codec_tag)
3605         audio_enc->codec_tag= audio_codec_tag;
3606
3607     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3608         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3609         avcodec_opts[AVMEDIA_TYPE_AUDIO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3610     }
3611     if (audio_stream_copy) {
3612         st->stream_copy = 1;
3613     } else {
3614         audio_enc->codec_id = codec_id;
3615         set_context_opts(audio_enc, avcodec_opts[AVMEDIA_TYPE_AUDIO], AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3616
3617         if (audio_qscale > QSCALE_NONE) {
3618             audio_enc->flags |= CODEC_FLAG_QSCALE;
3619             audio_enc->global_quality = FF_QP2LAMBDA * audio_qscale;
3620         }
3621         if (audio_channels)
3622             audio_enc->channels = audio_channels;
3623         audio_enc->sample_fmt = audio_sample_fmt;
3624         if (audio_sample_rate)
3625             audio_enc->sample_rate = audio_sample_rate;
3626         audio_enc->channel_layout = channel_layout;
3627         choose_sample_fmt(st, codec);
3628     }
3629     if (audio_language) {
3630         av_dict_set(&st->metadata, "language", audio_language, 0);
3631         av_freep(&audio_language);
3632     }
3633
3634     /* reset some key parameters */
3635     audio_disable = 0;
3636     av_freep(&audio_codec_name);
3637     audio_stream_copy = 0;
3638 }
3639
3640 static void new_data_stream(AVFormatContext *oc, int file_idx)
3641 {
3642     AVStream *st;
3643     AVCodec *codec=NULL;
3644     AVCodecContext *data_enc;
3645
3646     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);