These 3 filters are available in Kdenlive.
Wanted to make them available to Shotcut users.
- Threshold This one is key framed.
https://userbase.kde.org/Kdenlive/Manual/Effects/Misc/Threshold0r
Threshold.zip (2.4 KB)
Soft Glow.zip (2.0 KB)
Sobel.zip (1.2 KB)