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Contrasting shape colors create pixelation

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Joost LettinkContrasting shape colors create pixelation
by on Dec 2, 2015 at 12:35:19 pm
Last Edited By Joost Lettink on Dec 2, 2015 at 12:40:34 pm

I have multiple vector shapes in an animation I'm creating. I rendered two circles (one red, the other green). They become pixelated when I render them. Is this due to the contrast between each color? Is it possible to make the images have a smooth transition? Before rendering they look somewhat smooth but after rendering it looks pretty bad as you can see in the image below.


If you look at the letter on the bottom right, it suddenly becomes pixelated even though I turned on continuously rasterize. This doesn't happen to the white letter. It does have a slight gradient.

My export settings

I've never had this problem with earlier projects.

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Walter SoykaRe: Contrasting shape colors create pixelation
by on Dec 2, 2015 at 1:55:44 pm

If you are rendering to a chroma-subsampled format (MPEG2, MPEG4, ProRes 422, etc.), then the color values are encoded at half-resolution (or worse) while the brightness values are encoded at full-resolution. This leads to jaggies for things like red text on saturated non-red backgrounds where the edge detail (brightness) is encoded at a higher resolution than the color, so edges don't align perfectly. Chroma subsampling is often unavoidable for final delivery, so you may be better off adjusting your design for this reality.

Ae thinks in RGB, which has no chroma subsampling, so your previews will always look clean.

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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