On Wed, Jun 27, 2018 at 5:52 PM Jun Zhao <mypopy...@gmail.com> wrote:
>
> 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
>
ping, any comments for this fix?
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