Frame rate conversion...

[JaredSMark]

I usually always export to 23.976 just as my source footage was. However I've been given a few hours of 29.976 footage. For some odd reason, some of the footage looks fine in the end after exporting the project down to 23.976, but some clips actually have a stuttering effect. I'm not sure why some do and some don't.

I'm using Premiere and I've found that for the clips that stutter a bit, I can click Interpret Footage and force a 23.976 frame rate on it, and upon exporting, most of the stuttering goes away.

Is there any sort of conversion process or other precaution that I should take for all of my 29.976 footage when exporting to 23.976?

 

[Michael Carter]

Well, there's two ways this is usually handles (others may correct me).

The footage can be conformed to 24p; each frame from the 30p plays back as a discreet frame - it will be a few percent slower.

The other way is for the NLE to drop frames or use some technique to keep the footage at the same speed - this usually seems to be where stuttering comes from.