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Smoothing low framerate scenes?

almightycutie

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Is there a good way of using some sort of AI or something to smooth out purposefully lower framerate scenes? For example there are a few shots in Lord of the Rings like when Frodo gets stabbed by the troll, or in Harry Potter when there is a flashback to Voldemort killing Harry's parents. In both scenes the shots double or triple up the frames to slow them down, but it also gets all jittery. I know it's a stylistic choice but I've never liked that effect. I was wondering if there is something out there to replace those inbetweens so the shots can still be slowed down but not have the stuttered effect.

I know in Premiere there is an option for frame interpolation which works really well as long as there isn't any lighting changes (like flashes of lightning or spells from a wand), and also if the camera doesn't move much. Because of those limitations it doesn't work well on most scenes.

Here's an example:
This happens several times around the ~1:40 mark
 

The Scribbling Man

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You can achieve this with DAIN-app or Flowframes. The latter has the easier interface.

Dropped framerate for slo-mo is one of my pet peeves, though I think sometimes it can work stylistically.
 

almightycutie

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Thanks so much, this is just what I'm looking for! Also, looking at the Dain app, there seems to be a newer version called Rife. Not sure which is better though
 

The Scribbling Man

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Flowframes is a GUI for both DAIN and RIFE. The latter is generally said to be better, though it probably depends. I've had good results from both. DAIN will not work with AMD FYI.
 

almightycutie

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I downloaded Flowframes and it seems to work pretty well. I put the Harry Potter scene through it and I'd say about 3/4ths of it was usable. It still struggles with the flashes and some scene transitions but other than that it was great. Going to try it on a LOTR scene next
 

TinyBreadMouse

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Dropped framerate for slo-mo is one of my pet peeves, though I think sometimes it can work stylistically.
Funny enough, I think the LotR example is one of the better uses of this technique. The resulting footage looks choppy, and it's anxiety-inducing, and helps me, the viewer, visualize Frodo's pain.
 
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