diff options
| -rw-r--r-- | libavformat/oggparsevp8.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/libavformat/oggparsevp8.c b/libavformat/oggparsevp8.c index 5959d32b6a..7c67cc55a3 100644 --- a/libavformat/oggparsevp8.c +++ b/libavformat/oggparsevp8.c @@ -79,7 +79,11 @@ static uint64_t vp8_gptopts(AVFormatContext *s, int idx, uint64_t granule, int64 struct ogg *ogg = s->priv_data; struct ogg_stream *os = ogg->streams + idx; - uint64_t pts = (granule >> 32); + int invcnt = !((granule >> 30) & 3); + // If page granule is that of an invisible vp8 frame, its pts will be + // that of the end of the next visible frame. We substract 1 for those + // to prevent messing up pts calculations. + uint64_t pts = (granule >> 32) - invcnt; uint32_t dist = (granule >> 3) & 0x07ffffff; if (!dist) |