Monday, January 15, 2018

Re: [Avid-L2] 30p clips at 29.97p

 

On Jan 12, 2018, at 4:13 PM, Mark Spano <cutandcover@gmail.com> wrote:


Yeah, that's not accurate. There can be video at any frame rate, period. 30.0 and 29.97 are NOT interchangeable.

Well, maybe not in Avid but they certainly are interchangeable in most of the real world.

You'll note that I said there "shouldn't" be any difference. The assumption for "30fps" should be that it is a rounded reference to the precise video frame rate of "29.97." If you like, we can reverse the argument and say that 29.97 is an obsolete way of referring to 30fps. Either way, the intention is that they be treated as the same frame rate on playback. The difference is a theoretical, mathematical difference in sync rates that is rarely, if ever, meaningful in frame-based editing.

Media Composer will attempt to conform the speed of the source clip to the new timeline by DROPPING FRAMES on the order of 1 frame every thousand or whatever.

I'm sorry to hear that. That seems entirely wrong. How is dropping one frame over multiple seconds ever helpful? Does anyone intentionally shoot video at 30fps rather than 29.97 expecting the result to be different? Is this even possible with a video camera? 

Those are not rhetorical questions. I am actually curious. The only place I know this distinction to be meaningful is in the synchronization of 24fps film, and I don't think dropping frames would be an appropriate adjustment.


Cheers,
                   tod







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Posted by: tod <hoplist@hillmanncarr.com>
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this is the Avid-L2

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