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extract duration 

Originally committed as revision 5171 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2006-03-16 17:04:31 +00:00
parent 60a9cc5879
commit dbdaebe28d
1 changed files with 12 additions and 1 deletions
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13
libavformat/flvdec.c
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@ -34,7 +34,7 @@ static int flv_probe(AVProbeData *p)
static int flv_read_header(AVFormatContext *s,
AVFormatParameters *ap)
{
int offset, flags;
int offset, flags, size;
s->ctx_flags |= AVFMTCTX_NOHEADER; //ok we have a header but theres no fps, codec type, sample_rate, ...
@ -42,6 +42,17 @@ static int flv_read_header(AVFormatContext *s,
flags = get_byte(&s->pb);
offset = get_be32(&s->pb);
if(!url_is_streamed(&s->pb)){
const int fsize= url_fsize(&s->pb);
url_fseek(&s->pb, fsize-4, SEEK_SET);
size= get_be32(&s->pb);
url_fseek(&s->pb, fsize-3-size, SEEK_SET);
if(size == get_be24(&s->pb) + 11){
s->duration= get_be24(&s->pb) * (int64_t)AV_TIME_BASE / 1000;
}
}
url_fseek(&s->pb, offset, SEEK_SET);
return 0;