Multiple issues

[serg]

Well, here  the links to videos that you can use to reproduce the issues mentioned above.
 
1. "BP_test.avi" -  https://drive.google.com/file/d/1PXkarSI...sp=sharing
2. "ProRes_test.mov" - https://drive.google.com/file/d/1ZvI8D44...sp=sharing

Now:
1. Open "BP_test.avi" and assign Avisynth "DeSpot", navigate "Next"/"Previous" - see result.
2. Quit "Hybrid" (I noticed that changing sources multiple times without "Quit" makes "Hybrid" unresponsive)
3. Open "ProRes_test.mov" and assign Vapursynth any "Dehalo" filter - see result.
4. Open "ProRes_test.mov" and assign Avisynth  "DeSpot", navigate "Next"/"Previous" - see result.
It looks like Avisynth still use ffmpeg for QT Prores (it takes  approx 5mins to open 20 mins file)

DVD input works (you need just wait ~5 mins)