[GUIDE] VapourSynth + QTGMC Deinterlace + Hybrid UI FAQ for macOS

[Selur]

You are right that this does happen when using high bit depth. in which case Hybrid uses: RGB48 (= 16bit); this also causes the problem on Windows.
Using RGB30(=10bit) or RGB48(=8bit) works fine.
Problem seems to be the RGB48 to XY conversion.
So either this is a bug in Vapoursynth or something is amiss with the script.

clip = core.resize.Bicubic(clip=clip, format=vs.RGB48, matrix_in_s="470bg", range_s="limited")
# color adjustment using TimeCube
clip = core.timecube.Cube(clip=clip, cube="I:/Hybrid/64bit/vsfilters/ColorFilter/TimeCube/PQ_to_BT709_slope.cube")
clip = core.resize.Bicubic(clip=clip, format=vs.YUV444P16, matrix_s="470bg", range_s="limited")
clip = core.std.Levels(clip=clip, min_in=16, max_in=235, min_out=16, max_out=235)

-> green screen

clip = core.resize.Bicubic(clip=clip, format=vs.RGB48, matrix_in_s="470bg", range_s="limited")
# color adjustment using TimeCube
clip = core.timecube.Cube(clip=clip, cube="I:/Hybrid/64bit/vsfilters/ColorFilter/TimeCube/PQ_to_BT709_slope.cube")
clip = core.resize.Bicubic(clip=clip, format=vs.YUV444P10, matrix_s="470bg", range_s="limited")
clip = core.std.Levels(clip=clip, min_in=16, max_in=235, min_out=16, max_out=235)

-> green screen

# adjusting color space from YUV420P10 to RGB48 for vscube
clip = core.resize.Bicubic(clip=clip, format=vs.RGB48, matrix_in_s="470bg", range_s="limited")
# color adjustment using TimeCube
clip = core.timecube.Cube(clip=clip, cube="I:/Hybrid/64bit/vsfilters/ColorFilter/TimeCube/PQ_to_BT709_slope.cube")
clip = core.resize.Bicubic(clip=clip, format=vs.YUV444P8, matrix_s="470bg", range_s="limited")
clip = core.std.Levels(clip=clip, min_in=16, max_in=235, min_out=16, max_out=235)

-> works

Levels documentation says:

clip

    Clip to process. It must have integer sample type and bit depth between 8 and 16, or float sample type and bit depth of 32. If there are any frames with other formats, an error will be returned.

Since there isn't an error I assume this is a bug in Vapoursynth -> I'll ask over at doom9s where the Vapoursynth developers are. (https://forum.doom9.org/showpost.php?p=1...count=4076)


Cu Selur