diff options
Diffstat (limited to 'libavfilter/vf_overlay.c')
| -rw-r--r-- | libavfilter/vf_overlay.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/libavfilter/vf_overlay.c b/libavfilter/vf_overlay.c index 06967c2db5..6fa10aec8e 100644 --- a/libavfilter/vf_overlay.c +++ b/libavfilter/vf_overlay.c @@ -452,7 +452,8 @@ static void blend_slice(AVFilterContext *ctx, alpha = (alpha_v + alpha_h) >> 1; } else alpha = a[0]; - *d = (*d * (0xff - alpha) + *s++ * alpha + 128) >> 8; + *d = FAST_DIV255(*d * (255 - alpha) + *s * alpha); + s++; d++; a += 1 << hsub; } |