river
Can I get rid of these shakes?
For today on-the-fly No. It is reaction to framerate change, what is not immediate by observing ffdShow framerate parameter.
You can get nice result only if you do preprocess (mkv2vfr) and reencode your video with frame interpolation scene-by-scene with different frame interpolation settings.
BTW. What video you talking about? Can you give me a link?
I will take a closer look.