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-rw-r--r--libavcodec/ac3enc_fixed.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/ac3enc_fixed.c b/libavcodec/ac3enc_fixed.c
index e64384122a..800ef8f92c 100644
--- a/libavcodec/ac3enc_fixed.c
+++ b/libavcodec/ac3enc_fixed.c
@@ -47,7 +47,7 @@ static av_cold void mdct_end(AC3MDCTContext *mdct)
static av_cold int mdct_init(AVCodecContext *avctx, AC3MDCTContext *mdct,
int nbits)
{
- int ret = ff_mdct_init(&mdct->fft, nbits, 0, 1.0);
+ int ret = ff_mdct_init(&mdct->fft, nbits, 0, -1.0);
mdct->window = ff_ac3_window;
return ret;
}