Problems mixing 24 and 23.976 footage

[kidwoo]

I've noticed an issue with mixing these two frame rates. As minute as the difference is, I get ghosting from whatever frame rate I don't export in.

For example, if I export in 24, all the 23.976 shots look ghosted and skip. If I export in 23.976, all the 24 shots look ghosted.

I've got a few 24 frame shots in this clip, mostly the slowmo shots that were stretched from 60i and exported at 24 in AE. The first few title shots with riders are the same and exhibit the same issue. The effect is that all the 24 shots end up looking soft.

http://kidwoo.com/images/spats/In_The_Red2.wmv

I guess my question is if this is normal or not. This is the first thing I've done with 'mixed' footage with a dvx and I've never seen it discussed. I was under the impression that the two frame rates were essentially interchangeable.

Is there another solution other than just making sure I always stick to 23.976 since that's what the raw files I get from the dvx are?

 

[Joshua Provost]

Yes, you need to keep everything 23.976, or you will have issues like this, and possibly audio sync issues as well. Pure 24fps is never used in video, and only sometimes used even in film-originated material.

 

[kidwoo]

Thanks for the clarification!