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Jittery Playback
Hello,
I’m getting jittery playback on movies rendered out of After Effects. It becomes really apparent under cross dissolves or if I add a color correction filter to the clip. The movement of the actors suddenly looks like an old Keystone Cops movie.
The source footage frame rate is 23.976. In After Effects, my Comp is set to a frame rate of 23.98. I’m reframing some shots and exporting them at 23.98 Apple ProRes 422(HQ).
In FCP, my sequence settings are set to 23.98 Apple ProRes 422(HQ). I check the item properties for the clip exported from AE and it says 23.98. In my Render Control settings, the Frame Rate is set to 100%, Resolution 100%, and Codec, Same as Sequence Codec. RT playback is set to full quality.
Final export will be a QT movie. It’s never going to be shown on a TV.
Any ideas on where the jitter might be coming from?
Thanks in advance!
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5 Replies
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How are you monitoring?
David Roth Weiss
Director/Editor
David Weiss Productions, Inc.
Los AngelesPOST-PRODUCTION WITHOUT THE USUAL INSANITY ™
A forum host of Creative COW’s Apple Final Cut Pro, Business & Marketing, and Indie Film & Documentary forums.
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Thanks for the reply David.
Unfortunately, I’m not hooked up to an external monitor, so all I have to go off is the Canvas. But, when I render out a QT movie, the stutter is there also. But again, it seems to only show up during a cross dissolve or when I add a filter to the AE movies.
My Playback settings seem to be fine. RT: Safe. Video Quality: High. Frame Rate: Full.
Could it be a pulldown issue? Right now it’s set to 2:3:2:3. -
I’m not sure how you can tell a thing about pull down on a computer monitor. Wish I could help…
David Roth Weiss
Director/Editor
David Weiss Productions, Inc.
Los AngelesPOST-PRODUCTION WITHOUT THE USUAL INSANITY ™
A forum host of Creative COW’s Apple Final Cut Pro, Business & Marketing, and Indie Film & Documentary forums.
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[Brent Streeper] “The source footage frame rate is 23.976. In After Effects, my Comp is set to a frame rate of 23.98. I’m reframing some shots and exporting them at 23.98 Apple ProRes 422(HQ).”
That’s a big part of your problem, right there. In AE, all the pulldown menus and presets are for 23.976, but you’ve manually typed in 23.98. AE considers this a different frame rate. And since you’ve rendered out at this frame rate, it’s not playing smoothly.
Also, while FCP labels 23.976 as 23.98, if you render out from AE at 23.98, it’s not the same frame rate that FCP uses for all of it’s presets. There’s a recent thread about this in the RED forum here a the Cow.
[Brent Streeper] “Unfortunately, I’m not hooked up to an external monitor, so all I have to go off is the Canvas.”
As David suggests, you really need to get yourself properly connected to a video monitor to accurately see what you’ve got going on. Even if this is only for web delivery, a video monitor is essential.
Arnie
Post production is not an afterthought!
https://www.arniepix.com/ -
Awesome!
That did it.
I had a feeling that it had something to do with the frame rate. I was just assuming that AE was rounding up 23.976 to 23.98. Another lesson on why it’s bad to assume.
Thank you very much for the reply.
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