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-rw-r--r--libavcodec/ac3dec.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/ac3dec.c b/libavcodec/ac3dec.c
index 0d1c710eca..ee8b9701b1 100644
--- a/libavcodec/ac3dec.c
+++ b/libavcodec/ac3dec.c
@@ -443,7 +443,7 @@ static void ac3_decode_transform_coeffs_ch(AC3DecodeContext *s, int ch_index, ma
switch (bap) {
case 0:
if (dither)
- mantissa = (av_lfg_get(&s->dith_state) & 0x7FFFFF) - 0x400000;
+ mantissa = (((av_lfg_get(&s->dith_state)>>8)*181)>>8) - 5931008;
else
mantissa = 0;
break;