avformat/wavdec: make fact chunk parsing for w64 more robust

Signed-off-by: Paul B Mahol <onemda@gmail.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/libavformat/wavdec.c b/libavformat/wavdec.c
index b016185a1b..e280be4d44 100644
--- a/libavformat/wavdec.c
+++ b/libavformat/wavdec.c
@@ -822,6 +822,7 @@ static int w64_read_header(AVFormatContext *s)
             samples = avio_rl64(pb);
             if (samples > 0)
                 st->duration = samples;
+            avio_skip(pb, FFALIGN(size, INT64_C(8)) - 32);
         } else if (!memcmp(guid, ff_w64_guid_data, 16)) {
             wav->data_end = avio_tell(pb) + size - 24;