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The threshold THR in Background removal filter has the following effect: - if alpha if between [THR - 0.1; THR], alpha is interpolated; - if alpha >= THR, alpha is set to 1.0; - if alpha <= THR - 0.1, alpha is set to 0. It was introduced in order to smooth the alpha at the edges of the foreground. This works fine unless THR == 1, where there can be bulk pixels with alpha which will be interpolated as if they were at the edge; in order to ensure that a bulk area with alpha set to 1.0 is well defined, the max threshold is now set to 0.95 (so if the user picks a unity threshold, a value of 0.95 will actually be used). This fixes a bug in third party plugins which rely on a bulk foreground safely set at alpha == 1.0. [1] [1] https://github.com/FiniteSingularity/obs-stroke-glow-shadow/issues/61 Signed-off-by: pkv <pkv@obsproject.com>