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-rw-r--r--libswscale/swscale.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libswscale/swscale.c b/libswscale/swscale.c
index d05e6819a8..d8a2e31620 100644
--- a/libswscale/swscale.c
+++ b/libswscale/swscale.c
@@ -554,7 +554,7 @@ static int swScale(SwsContext *c, const uint8_t* src[],
chrVSrcPtr = tmpV;
}
- if (isPlanarYUV(dstFormat) || dstFormat==PIX_FMT_GRAY8) { //YV12 like
+ if (isPlanarYUV(dstFormat) || (isGray(dstFormat) && !isALPHA(dstFormat))) { //YV12 like
const int chrSkipMask= (1<<c->chrDstVSubSample)-1;
if (vLumFilterSize == 1) {