Video footage, every fourth frame duplicated

Is there a fix for this? The footage runs 1t 23.976.

Actually, it lookks like every fourth then third frame. If I remove these dupe frames it will significantly shorten the interview so I guess it's best to leave it?

have you put you 23.976 footage into a 29.97 timeline?

It's how it was supplied. Not much I can with it sadly.

OK, you think you have some footage with frames either like ABCCDEFF... or else like ABCDDEFGHH... . (One could say of the first that every fourth frame of the video is a duplicate; one could say of the second that every fourth frame of the source was doubled. Best, spell it out.)

First, as Nick suggested, make sure that your video really contains duplicate frames. It could be that your editing program is adding those duplicate frames in consideration of the video's metadata and your timeline settings.

If you really have duplicate frames in your video and if you are not intercutting it with other video, so you are free to make it play at a speed of your choosing, then you certainly can remove the duplicate frames without shortening -- speeding up -- the interview.

If your ABCDDEFGHH... video sounds and looks natural (except a little jerky) when playing at X fps, then you can get rid of the duplicate frames, making it ABCDEF..., and it will then sound and look natural (without the jerkiness) at 4/5*X fps. If, on the other hand, your video is like ABCCDEFF..., then the correction factor is 3/4 instead of 4/5.

Example. If a ABCDDEFGHH... video wants 30 fps, then the preened ABCDEF... video will need 4/5*30=24 fps.
Example. If a ABCCDEFF... video wants 24 fps, then the preened ABCDEF... video will need 3/4*24=18 fps.

If you determine that the preened ABCDEF... video needs to play at a weird frame rate, you've probably made a mistake, since those frames came from an original that was probably shot at a non-weird frame rate.

Dennis Couzin
Berlin, Germany