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featheredtar
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Any idea what this "slicing" glitch would be related to?

Jul 18, 2012 8:38 AM

Tags: #problem #after_effects #export #output #render #animation

Here is the video:

 

http://www.youtube.com/watch?v=cjDEFlQ6A0o

 

The video is of a constant zoom into a Fibonacci spiral. The glitch is that the top part of the centre area will occasionally move up. I have no idea why this happens, as it only does so in the exported video. In After Effects those parts look fine.

 

I made this scene by making four 28,000 x 17,500 px precomps of Fibonacci spirals made of flowers. They were made that large so that the smallest quarter circle of the spiral would be able to fill a 1080p frame without interpolation. To achieve the zoom I attach the precomps to a null object, and arrange them so that there are no seams between the different individual spirals.

 

I'm using CS 5.5, but will switch to 6 soon. If that doesn't help, I could theoretically export the precomps as AVIs and then work with those. Does anyone have any ideas as to why this glitch is coming up?

314 Views   2 Replies   Latest reply: featheredtar, Jul 18, 2012 10:15 PM
 
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  • Dave LaRonde
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    1. Dave LaRonde,
    Jul 18, 2012 10:26 AM   in reply to featheredtar
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    I see a lot of small movements in the various pictures, but I don't know if they're accidental or intentional.  I don't know the look you're after.

     

    Since we don't know what it's SUPPOSED to look like, it's difficult to say what's wrong other than to offer the usual litany of advice: don't use multiprocessing, don't use Open GL when rendering, and don't export, use the AE Render Queue instead.

     
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  • featheredtar
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    2. featheredtar,
    Jul 18, 2012 10:15 PM   in reply to Dave LaRonde
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    Good point. Here's a comparison of two frames, the top one being the one displaying the glitch.
    glitch.jpggood.jpg

     
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