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-rw-r--r--libavcodec/diracdec.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/diracdec.c b/libavcodec/diracdec.c
index 05c79005eb..1d7bb9b98b 100644
--- a/libavcodec/diracdec.c
+++ b/libavcodec/diracdec.c
@@ -903,8 +903,8 @@ static int decode_lowdelay(DiracContext *s)
} else {
for (slice_y = 0; bufsize > 0 && slice_y < s->num_y; slice_y++) {
for (slice_x = 0; bufsize > 0 && slice_x < s->num_x; slice_x++) {
- bytes = (slice_num+1) * s->lowdelay.bytes.num / s->lowdelay.bytes.den
- - slice_num * s->lowdelay.bytes.num / s->lowdelay.bytes.den;
+ bytes = (slice_num+1) * (int64_t)s->lowdelay.bytes.num / s->lowdelay.bytes.den
+ - slice_num * (int64_t)s->lowdelay.bytes.num / s->lowdelay.bytes.den;
slices[slice_num].bytes = bytes;
slices[slice_num].slice_x = slice_x;
slices[slice_num].slice_y = slice_y;