Only in September 
we last reported on DAIN. The term refers to an AI model that can credibly calculate missing intermediate frames in films. DAIN is currently counted among the state-of-the art frame interpolation because it recognises object overlaps as well as depth information well without additional user interaction.
The new AI models are particularly popular with stop-motion animators because they can be used to create much smoother movements. And recently a new competitor has been stirring up the scene: RIFE is not necessarily significantly better in the results it achieves, but the new model shines with pragmatic render times:
RIFE spat out a 2-minute clip (on which DAIN calculated for around 10 hours) after only 49 minutes. And the results are at least comparable, as the following clip will prove:
If you are interested in a more precise comparison, you can put on the Pixel Peeper glasses for this:
And if you want to try it out for yourself, you can find here the fantastic Flowframes app, with which you can test current frame interpolation models yourself under Windows (including CIAN and DAIN). Even with full GPU support for Nvidia and (!!) AMD.
However, the RIFE model described here currently only runs under Nvidia GPUs. Flowframes is even available completely free of charge, but the programmer is happy about a small financial affection, the amount of which you can determine yourself.
;)