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does 23.98 drop frames in AE?

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Charlie Canfield
does 23.98 drop frames in AE?
on May 4, 2017 at 1:46:31 am

i have some 23.98 footage, brought it into a 23.98 comp.
i created several single-frame sync pops at different spots with solids and the tone effect (i'm chopping up the footage into scenes and want syncs head and tail on all of them).
upon rendering as quicktime movies (i tried h264, apple pro res proxy and animation no compression) and even a png sequence, many of these sync pops disappeared; although which syncs appeared/disappeared varied.
not until i created a 24 fps comp and interpreted the footage as 24 did all of the single-frame syncs pops appear correctly.
ideas?



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Walter Soyka
Re: does 23.98 drop frames in AE?
on May 4, 2017 at 2:31:46 am

You shouldn't be seeing any dropped frames. Double-check your frame rate, maybe? 23.98 is really 23.978.

Walter Soyka
Designer & Mad Scientist at Keen Live [link]
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
@keenlive [twitter]   |   RenderBreak [blog]   |   Profile [LinkedIn]


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Bouke Vahl
Re: does 23.98 drop frames in AE?
on May 4, 2017 at 10:10:49 am

Walter,
It's in fact 23.976 !
(24 & 1000 / 1001)

Bouke
http://www.videotoolshed.com


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Walter Soyka
Re: does 23.98 drop frames in AE?
on May 4, 2017 at 11:36:48 am

Yes, of course! Please ignore my braino above (sadly, not quite a typo). Thanks for the correction, Bouke.

Walter Soyka
Designer & Mad Scientist at Keen Live [link]
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
@keenlive [twitter]   |   RenderBreak [blog]   |   Profile [LinkedIn]


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Dave LaRonde
Re: does 23.98 drop frames in AE?
on May 4, 2017 at 3:26:42 pm

Certain camera makers and software developers use the nickname "23.98" for the actual frame rate, 23.976. Why? Do they think the additional decimal place will frighten people? Who knows their convoluted logic?

However, Adobe calls a spade a spade. 23.976 is 23.976. Furthermore, After Effects gives you the ability to check your clip's frame rate. In the project window, highlight the 23.98 clip. Look at the info pane at the very top. You will see the actual frame rate.

I have five whole American dollars that say you will see 23.976.

Dave LaRonde
Promotion Producer
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA


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Charlie Canfield
Re: does 23.98 drop frames in AE?
on May 5, 2017 at 12:11:03 am

well, "Mr 10 bucks", it is indeed 23.976.

do you suppose when using that fps in a program that rounds up to 24 fps (toon boom in my present case), that it should be converted to 24, or used as is and exported as 23.976 when making the movie?

also i hope my laziness/time constraints don't bite me later as i'm keeping the 24 conversion that maintained all my sync pops until i export it again back to 23.976...



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Dave LaRonde
Re: does 23.98 drop frames in AE?
on May 5, 2017 at 3:36:01 am
Last Edited By Dave LaRonde on May 5, 2017 at 3:40:34 am

The big problem would be lip-sync. If you don't have any, breathe easier. It gets easy to conform to your delivery frame rate.
I'm big on making sure frame rates match. Some might say I'm weird about it. But I've never had even the slightest hint of frame rate issues.

Dave LaRonde
Promotion Producer
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA


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