oggdec: Set data_offset to the right value

Otherwise it gets set automatically to a page midstream and prevents seeking
to the first page.

Originally committed as revision 22454 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 1 insertions, 0 deletions

diff --git a/libavformat/oggdec.c b/libavformat/oggdec.c
index 2c2cb2d3bc..3ebd61bbbc 100644
--- a/libavformat/oggdec.c
+++ b/libavformat/oggdec.c
@@ -382,6 +382,7 @@ ogg_packet (AVFormatContext * s, int *str, int *dstart, int *dsize, int64_t *fpo
             os->segp = segp;
             os->psize = psize;
             ogg->headers = 1;
+            s->data_offset = os->sync_pos;
         }else{
             os->pstart += os->psize;
             os->psize = 0;