Signed-off-by: Andreas Rheinhardt <andreas.rheinha...@outlook.com>
---
 libavformat/matroskaenc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavformat/matroskaenc.c b/libavformat/matroskaenc.c
index 41b2df7dbf..1dde12a7d9 100644
--- a/libavformat/matroskaenc.c
+++ b/libavformat/matroskaenc.c
@@ -286,7 +286,7 @@ static void put_ebml_uint(AVIOContext *pb, uint32_t 
elementid, uint64_t val)
 static void put_ebml_sint(AVIOContext *pb, uint32_t elementid, int64_t val)
 {
     int i, bytes = 1;
-    uint64_t tmp = 2*(val < 0 ? val^-1 : val);
+    uint64_t tmp = 2 * (uint64_t)(val < 0 ? val^-1 : val);
 
     while (tmp >>= 8)
         bytes++;
-- 
2.32.0

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