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DV: use data_offset to fix seeking in badly cut files where the first 

complete frame does not start at position 0.

Originally committed as revision 25833 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Reimar Döffinger 2010-11-27 14:40:12 +00:00
parent 4ab4d65f35
commit fe9d2edbdb
1 changed files with 2 additions and 2 deletions
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4
libavformat/dv.c
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@ -370,7 +370,7 @@ static int64_t dv_frame_offset(AVFormatContext *s, DVDemuxContext *c,
// FIXME: sys may be wrong if last dv_read_packet() failed (buffer is junk)
const DVprofile* sys = ff_dv_codec_profile(c->vst->codec);
int64_t offset;
int64_t size = url_fsize(s->pb);
int64_t size = url_fsize(s->pb) - s->data_offset;
int64_t max_offset = ((size-1) / sys->frame_size) * sys->frame_size;
offset = sys->frame_size * timestamp;
@ -378,7 +378,7 @@ static int64_t dv_frame_offset(AVFormatContext *s, DVDemuxContext *c,
if (size >= 0 && offset > max_offset) offset = max_offset;
else if (offset < 0) offset = 0;
return offset;
return offset + s->data_offset;
}
void dv_offset_reset(DVDemuxContext *c, int64_t frame_offset)