YomikoR/VapourSynth-Editor

Issue with RGB preview ?dither

pdr0github opened this issue · 1 comments

Solid color bars , running the color picker along a bar, the YUV read values are uniform correct values. But the converted display RGB values vary on the same bar almost like a dither pattern applied

You can use vapoursynth-colorbars , or if it's easier download
https://www.mediafire.com/file/imbdltobvm9w7rk/vapoursynth_colorbars_YUV420P8_noconv.mp4/file

clip = core.lsmas.LibavSMASHSource(r'vapoursynth_colorbars_YUV420P8_noconv.mp4')
clip.set_output()

Affects r19-mod-3 , mod-4, and mod-5-beta2 (did not test others)

Original r19 and vsedit2 do not exhibit the issue

It's true, and I'm not going to change it back.

To circumvent dithering, you may resample the clip to RGB24 (or RGB30 if 10-bit color depth is supported on your platform) using VS internal resizers in your script.