Thank you so much for this answer!admin wrote: ↑Wed Mar 13, 2019 8:04 pmHi zkazzay,
When using video on the "Insert media" and/or "Video overlay", the AviSynth function AviSource is used to read the media files. If you use a codec in an Avi-file that is not supported by AviSynth, it will fail. And this is probably the reason for the errors. Further more, the "ProRes AW/KS" was prematurely released. Simply put: it was enabled in the release by accident. So don't expect it to behave properly. The actual release will be in the next major upgrade.
This made me verify the codec used to convert the clip used on the "insert media" node, and that was the difference for all the clips on other workflows so far. I've reconverted the AVI to use on the "insert media" node and now it's working fine.