AviSynth is an old-but-still-useful tool for processing video via script, but I’ve noticed that there is a fork called AviSynth+ that appears to have some improvements. And then there’s VapourSynth rewritten to use Python.
What are the pros and cons of these versions?
For use-cases such as QTGMC deinterlacing and high-quality resizing, is one clearly better than the other?