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-rw-r--r--libavformat/matroskadec.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libavformat/matroskadec.c b/libavformat/matroskadec.c
index 648941e57f..fc3e4f0f88 100644
--- a/libavformat/matroskadec.c
+++ b/libavformat/matroskadec.c
@@ -2284,7 +2284,7 @@ static int matroska_parse_block(MatroskaDemuxContext *matroska, uint8_t *data,
return res;
av_assert1(block_duration != AV_NOPTS_VALUE);
- block_time = AV_RB16(data);
+ block_time = sign_extend(AV_RB16(data), 16);
data += 2;
flags = *data++;
size -= 3;