diff --git a/libswscale/input.c b/libswscale/input.c
index 2def2de6c8..acf56b3404 100644
--- a/libswscale/input.c
+++ b/libswscale/input.c
@@ -724,12 +724,13 @@ static av_always_inline void planar_rgb16_to_y(uint8_t *_dst, const uint8_t *_sr
     int i;
     const uint16_t **src = (const uint16_t **)_src;
     uint16_t *dst        = (uint16_t *)_dst;
+    int shift = bpc < 16 ? bpc : 14;
     for (i = 0; i < width; i++) {
         int g = rdpx(src[0] + i);
         int b = rdpx(src[1] + i);
         int r = rdpx(src[2] + i);
 
-        dst[i] = ((RY * r + GY * g + BY * b + (33 << (RGB2YUV_SHIFT + bpc - 9))) >> (RGB2YUV_SHIFT + bpc - 14));
+        dst[i] = ((RY * r + GY * g + BY * b + (33 << (RGB2YUV_SHIFT + bpc - 9))) >> (RGB2YUV_SHIFT + shift - 14));
     }
 }
 
@@ -791,13 +792,14 @@ static av_always_inline void planar_rgb16_to_uv(uint8_t *_dstU, uint8_t *_dstV,
     const uint16_t **src = (const uint16_t **)_src;
     uint16_t *dstU       = (uint16_t *)_dstU;
     uint16_t *dstV       = (uint16_t *)_dstV;
+    int shift = bpc < 16 ? bpc : 14;
     for (i = 0; i < width; i++) {
         int g = rdpx(src[0] + i);
         int b = rdpx(src[1] + i);
         int r = rdpx(src[2] + i);
 
-        dstU[i] = (RU * r + GU * g + BU * b + (257 << (RGB2YUV_SHIFT + bpc - 9))) >> (RGB2YUV_SHIFT + bpc - 14);
-        dstV[i] = (RV * r + GV * g + BV * b + (257 << (RGB2YUV_SHIFT + bpc - 9))) >> (RGB2YUV_SHIFT + bpc - 14);
+        dstU[i] = (RU * r + GU * g + BU * b + (257 << (RGB2YUV_SHIFT + bpc - 9))) >> (RGB2YUV_SHIFT + shift - 14);
+        dstV[i] = (RV * r + GV * g + BV * b + (257 << (RGB2YUV_SHIFT + bpc - 9))) >> (RGB2YUV_SHIFT + shift - 14);
     }
 }
 #undef rdpx