Replace Specific Frames and Interpolate Them?

[Selur]

Yes. Nothing was changing in the preview but I tried encoding anyway just to see if preview was giving an error. As I have never used the filter before. Debug within the preview window was saying that those frames I chose were "Input(before scene change)".

Okay, "Input(before scene change)" should only happen if the scene threshold is != 0, thought I fixed that.
Please also test if it works if you use svp instead of mv for interpolation.

Cu Selur