the right blending calc is:
(alpha * Frame_2 + (MAX - alpha) * Frame_1 + 512) >> 10
Signed-off-by: Jun Zhao <mypopy...@gmail.com>
---
libavfilter/vf_minterpolate.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/libavfilter/vf_minterpolate.c b/libavfilter/vf_minterpolate.c
index d534315..c6a5e63 100644
--- a/libavfilter/vf_minterpolate.c
+++ b/libavfilter/vf_minterpolate.c
@@ -1122,8 +1122,8 @@ static void interpolate(AVFilterLink *inlink, AVFrame
*avf_out)
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++) {
avf_out->data[plane][x + y * avf_out->linesize[plane]]
=
- alpha *
mi_ctx->frames[2].avf->data[plane][x + y *
mi_ctx->frames[2].avf->linesize[plane]] +
- ((ALPHA_MAX - alpha) *
mi_ctx->frames[1].avf->data[plane][x + y *
mi_ctx->frames[1].avf->linesize[plane]] + 512) >> 10;
+ (alpha * mi_ctx->frames[2].avf->data[plane][x + y
* mi_ctx->frames[2].avf->linesize[plane]] +
+ (ALPHA_MAX - alpha) *
mi_ctx->frames[1].avf->data[plane][x + y *
mi_ctx->frames[1].avf->linesize[plane]] + 512) >> 10;
}
}
}
--
2.7.4
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