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Changing a projects frame rate

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Neil StrattonChanging a projects frame rate
by on Nov 30, 2010 at 11:05:34 pm

Greetings again. I have looked around for an answer to this one but have so far failed. I have purchased a great project from a project vendor and it is 29.97fps. Now I am to produce a PAL dvd. My question is where to change the frame rate? Should I create a new composition at 25fps and import the composition into there? Or should I change the frame rate at render? Or should I leave it until I get to Premiere and import into a 25fps sequence?
Thanks in advance!
Neil


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Dave LaRondeRe: Changing a projects frame rate
by on Nov 30, 2010 at 11:13:11 pm

If the video isn't interlaced, you can conform the footage to 25fps in AE's interpret footage settings, put it into a 25fps comp and render.

The motion will be a tad faster; if that's an issue, it's time to look at frame rate conversion software like ReelVision's Twixtor or Magic Bullet.

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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Neil StrattonRe: Changing a projects frame rate
by on Nov 30, 2010 at 11:35:27 pm

Thanks again Dave! What I have here is not a footage item but an AE project at 29.97. Shall I just lay this into a 25fps comp?
thanks
Neil



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Walter SoykaRe: Changing a projects frame rate
by on Dec 1, 2010 at 1:50:23 pm

[Neil Stratton] "What I have here is not a footage item but an AE project at 29.97. Shall I just lay this into a 25fps comp?"

Yes. Since you have no video footage, AE can smoothly re-evaluate the comp at 25 fps instead of 29.97 fps without frame doubling, frame blending, or speeding up.

Two small gotchas: First, make sure that Preserve frame rate when nested or in render queue (in Composition settings > Advanced) is off, as it is by default. Second, watch out for fast motion -- a quick move might be acceptable at 29.97 fps, but it might judder unacceptably at 25 fps.

Retiming video elements is another matter, better suited for Twixtor or Timewarp (see Chris Wright's formula).

Walter Soyka
Principal & Designer at Keen Live
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
RenderBreak Blog - What I'm thinking when my workstation's thinking
Creative Cow Forum Host: Live & Stage Events


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Neil StrattonRe: Changing a projects frame rate
by on Dec 4, 2010 at 11:59:46 am

Thanks Walter. Thats exactly what I did and it worked a treat.Thanks also for the gotchas.
Many thanks
Neil



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Thomas JardineRe: Changing a projects frame rate
by on Mar 31, 2016 at 2:46:10 pm

Hey all.

Is there a way to change frame rates for an ENTIRE project? All subcomps, all layers etc...


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