-
Chroma sub-sampling preview
I’m doing some graphics work that involves contrasting colors separated by sharp edges. When these edges are curves or diagonals, they look more pixelated when rendered to 4:2:2 than when rendered to 4:4:4, or even within After Effects itself. This makes sense as an artifact of the chroma subsampling used. Here’s my question: is there a way to preview video in After Effects that takes chroma subsampling into consideration? Is there a way to set After Effects to a 4:2:2 preview mode?
-
1 Reply
-
Not directly.
If you’re using CS4 or CS5/CS5.5, you can use qp_ChromaSubsample [link].
CS6 and higher (or CS3 and lower), you have to make your own. You can get a decent approximation by adding an adjustment layer with the following effects:
Channel Combiner (set to RGB to YUV)
Channel Blur (Red:0, Green:2, Blue:2)
Channel Combiner (set to YUV to RGB)I recommend making this adjustment layer into a guide layer so you don’t accidentally render it.
Walter Soyka
Principal & Designer at Keen Live
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
RenderBreak Blog – What I’m thinking when my workstation’s thinking
Creative Cow Forum Host: Live & Stage Events
Reply to this Discussion! Login or Sign Up