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After effects exported video has a weird flashing effect @ 21s

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David Honan
After effects exported video has a weird flashing effect @ 21s
on Sep 2, 2014 at 2:42:51 pm

Good After Noon from 20 degrees C Sunny York, UK :-)

Having just uploading this video @



an odd flashing effect kicks in at around 21 seconds in (Aggghhh!!).

It appears no where else. Built using abode premiere and after effects is this some sort of cock uo ive made in the the export?

Any help welcome, I'm clueless :-(

Thanks,
David


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Dave LaRonde
Re: After effects exported video has a weird flashing effect @ 21s
on Sep 2, 2014 at 4:46:30 pm

I see a tilt down on a pretty high-contrast horizontally-striped canopy at that point, and I wouldn't be surprised if it's giving your camera fits. To confirm, you can check the shot in a viewer outside of premiere or AE.

I think it's a result of the codec in which the video camera recorded the shot. It's pretty easy to fake the tilt down with a few carefully-shot stills stitched together, using AE to simulate the tilt.

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


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David Honan
Re: After effects exported video has a weird flashing effect @ 21s
on Sep 3, 2014 at 8:20:16 am

Thanks Dave :-) This one was driving me nuts. Looks like the stills option is my route. If I take that solution I'll post back here with an update.


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Walter Soyka
Re: After effects exported video has a weird flashing effect @ 21s
on Sep 2, 2014 at 7:08:43 pm

Try clearing your cache in Ae.

Ae CC/CC2014:
Edit > Purge > All Memory & Disk Cache

Ae CS6:
Preferences > Media & Disk Cache > Empty Disk Cache

Also, if you are running Ae CS6, make sure you've installed the updates. The persistent disk cache feature was new in CS6 and there were a good number of bug fixes in the CS6 point releases.

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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