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Aliasing on animation for NTSC

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Avital Pelakh
Aliasing on animation for NTSC
on Dec 29, 2010 at 2:33:06 am

I made a simple animation in AE which I've exported to use in Final Cut sequence that is set to NTSC DV 16:9. The animation looks nice and smooth in AE and then looks terrible as soon as it hits FCP.

Any advice as to what I should do?


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Amit Zinman
Re: Aliasing on animation for NTSC
on Dec 29, 2010 at 5:36:47 am

What type of animation?
Does it look good playing with Quicktime or VLC?
Can you be a little more specific as to the type of "horribleness"?



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Tudor "Ted" Jelescu
Re: Aliasing on animation for NTSC
on Dec 29, 2010 at 2:31:30 pm

Yeah, it would help us to know if you are working in FCP with interlaced or progressive footage. Most times a clip will play jittery if it is a interlaced clip with the wrong field dominance.

Tudor "Ted" Jelescu
Senior Compositor/VFX Artist


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Avital Pelakh
Re: Aliasing on animation for NTSC
on Dec 29, 2010 at 2:50:40 pm

Thank you for responding.

The animation is just a guy walking. I created the pieces in Illustrator and used the puppet tool in AE. I exported it using the animation compressor with an NTSC pixel aspect ratio.

when i play the clip from the finder, there is no aliasing. but as soon as i drop it into my FCP timeline, the aliasing looks really bad.

my FCP sequence settings are as such:

Frame Size: 720x480 NTSC DV (3:2)
Pixel Aspect Ratio: NTSC - CCIR 601/DV (720x480) Anamorphic
Field Dominance: Lower (even)
Compressor DV/DVCPRO - NTSC

Thanks again for responding, I hope I've provided more useful information here


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Dave LaRonde
Re: Aliasing on animation for NTSC
on Dec 29, 2010 at 3:50:36 pm

"Final Cut sequence that is set to NTSC DV 16:9."

There's your problem. Don't work in DV. DV is an absolutely horrible way to compress motion graphics or any kind of AE work.

For FCP, you should be using ProRes 422. Watch the problem disappear.

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


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Avital Pelakh
Re: Aliasing on animation for NTSC
on Dec 29, 2010 at 10:59:32 pm

Thanks, I changed the settings to Apple Pro Res 422 with square pixels and it seems to be much better, although I had to resize most of the clips on the timeline.

I appreciate the help!


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Avital Pelakh
Re: Aliasing on animation for NTSC
on Dec 29, 2010 at 11:45:37 pm

Alright, now I have a new problem. My animation has a chroma key filter on it in FCP to make it seem like my guy is walking through a bunch of different real world scenes.

I exported the video using compressor with the Apple ProRes 422 (HQ) setting. Now my aliasing is gone, but my chroma key filter isn't working in the final output (so i see my animation with green behind it, but no backgrounds). This is not the case when I look at the preview window in compressor.

any ideas?


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Dave LaRonde
Re: Aliasing on animation for NTSC
on Dec 30, 2010 at 4:32:44 pm

[Avital Pelakh] "any ideas?"

Yeah, don't use FCP for keying; it stinks. Use Keylight in AE.... and while you're doing the keying, make sure to include the background. Do the ENTIRE shot in AE.

Unless there's an overpowering reason for it, rendering an alpha-channeled chroma key in AE for use in FCP is just plain-old dumb.

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


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