diff options
| -rw-r--r-- | ext/ogg/gstoggstream.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/ext/ogg/gstoggstream.c b/ext/ogg/gstoggstream.c index 572f9ca9f..caa986513 100644 --- a/ext/ogg/gstoggstream.c +++ b/ext/ogg/gstoggstream.c @@ -255,6 +255,11 @@ granule_to_granulepos_default (GstOggStream * pad, gint64 granule, gint64 keyoffset; if (pad->granuleshift != 0) { + /* If we don't know where the previous keyframe is yet, assume it is + at 0 or 1, depending on bitstream version. If nothing else, this + avoids getting negative granpos back. */ + if (keyframe_granule < 0) + keyframe_granule = pad->theora_has_zero_keyoffset ? 0 : 1; keyoffset = granule - keyframe_granule; return (keyframe_granule << pad->granuleshift) | keyoffset; } else { |