[FFmpeg-devel] [PATCH] riff: chunks must be at 2 byte boundary

[Paul B Mahol]

Fixes #2244.

Signed-off-by: Paul B Mahol <onemda at gmail.com>
---
 libavformat/riff.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libavformat/riff.c b/libavformat/riff.c
index 0df5c8c..3011f8d 100644
--- a/libavformat/riff.c
+++ b/libavformat/riff.c
@@ -428,9 +428,10 @@ void ff_end_tag(AVIOContext *pb, int64_t start)
     int64_t pos;
 
     pos = avio_tell(pb);
+    ffio_fill(pb, 0, pos & 1);
     avio_seek(pb, start - 4, SEEK_SET);
     avio_wl32(pb, (uint32_t)(pos - start));
-    avio_seek(pb, pos, SEEK_SET);
+    avio_seek(pb, FFALIGN(pos, 2), SEEK_SET);
 }
 
 /* WAVEFORMATEX header */
-- 
1.7.11.4