diff --git a/postproc/swscale.c b/postproc/swscale.c
index 5b4953c02c..f21776182a 100644
--- a/postproc/swscale.c
+++ b/postproc/swscale.c
@@ -102,8 +102,6 @@ untested special converters
 //FIXME replace this with something faster
 #define isPlanarYUV(x) ((x)==IMGFMT_YV12 || (x)==IMGFMT_I420 || (x)==IMGFMT_YVU9)
 #define isYUV(x)       ((x)==IMGFMT_YUY2 || isPlanarYUV(x))
-#define isHalfChrV(x)  ((x)==IMGFMT_YV12 || (x)==IMGFMT_I420)
-#define isHalfChrH(x)  ((x)==IMGFMT_YUY2 || (x)==IMGFMT_YV12 || (x)==IMGFMT_I420)
 #define isGray(x)      ((x)==IMGFMT_Y800)
 #define isSupportedIn(x)  ((x)==IMGFMT_YV12 || (x)==IMGFMT_I420 || (x)==IMGFMT_YUY2 \
 			|| (x)==IMGFMT_BGR32|| (x)==IMGFMT_BGR24|| (x)==IMGFMT_BGR16|| (x)==IMGFMT_BGR15\
diff --git a/postproc/swscale_template.c b/postproc/swscale_template.c
index 5a8b25cd77..89ddb4b0e5 100644
--- a/postproc/swscale_template.c
+++ b/postproc/swscale_template.c
@@ -2709,9 +2709,9 @@ i--;
 
 	for(;dstY < dstH; dstY++){
 		unsigned char *dest =dst[0]+dstStride[0]*dstY;
-		unsigned char *uDest=dst[1]+dstStride[1]*(dstY>>1);
-		unsigned char *vDest=dst[2]+dstStride[2]*(dstY>>1);
-		const int chrDstY= isHalfChrV(dstFormat) ? (dstY>>1) : dstY;
+		const int chrDstY= dstY>>c->chrDstVSubSample;
+		unsigned char *uDest=dst[1]+dstStride[1]*chrDstY;
+		unsigned char *vDest=dst[2]+dstStride[2]*chrDstY;
 
 		const int firstLumSrcY= vLumFilterPos[dstY]; //First line needed as input
 		const int firstChrSrcY= vChrFilterPos[chrDstY]; //First line needed as input