[FFmpeg-devel] [PATCH] movsub_bsf: Fix mov2textsub regression

[Andreas Rheinhardt]

The mov flavour of timed text uses the first two bytes of the packet as
a length field. And up until 11bef2fe said length field has been read
correctly in the mov2textsub bsf. But since then the next two bytes are
read as if they were the length field. This is fixed in this commit.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at gmail.com>
---
 libavcodec/movsub_bsf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/movsub_bsf.c b/libavcodec/movsub_bsf.c
index 5878607061..cd48aa7bb8 100644
--- a/libavcodec/movsub_bsf.c
+++ b/libavcodec/movsub_bsf.c
@@ -75,8 +75,8 @@ static int mov2textsub(AVBSFContext *ctx, AVPacket *pkt)
        return AVERROR_INVALIDDATA;
     }
 
-    pkt->data += 2;
     pkt->size  = FFMIN(pkt->size - 2, AV_RB16(pkt->data));
+    pkt->data += 2;
 
     return 0;
 }
-- 
2.21.0