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Re: Avid & non-standard frame rates (problems)

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Michael Phillips
Re: Avid & non-standard frame rates (problems)
on Apr 6, 2015 at 7:56:31 pm

There's a difference between frame rate for editing and a playback frame rate. For example, 23.976 is a playback rate, but EDLs, edits and such have 24 frame. They're just playing back slower. The same goes for 30 and 29.97, and because of that slower play back rate, drop frame was created to keep the count accurate relative to wall time. In theory the same could be done for 23.976 to have a drop frame count following the same rules of 29.97DF, it just seems no one is in a hurry to do so. Once you get into OTT type delivery specs who want the programs delivered in their original shooting rate, 23.976, 24.000, 25.000, 29.97, etc. but they don't have to keep to a broadcast schedule based on set times. So no real need (yet).

The issue with 24.33 is that is is a recording device that wanted to either do 24 or 25 and failed at both for whatever reason. But I've seen these rates from cell phones and such. For best quality, you will want to do a frame for frame, as you said 23.976 which will only be a 1.45% change in speed, so won't be noticeable from a slowness perspective, but will not have blended or dropped frames.

That will require an update to 8.3 to get that feature.


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