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RGB+Alpha Render

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Spencer TycksenRGB+Alpha Render
by on Oct 16, 2014 at 11:50:33 pm

From AE I am trying to render a fairly simple animation as an alpha, but it keeps coming out as a huge file. 5+ GB. I'm sure it is due to my lack of understanding of the codecs I should be using. Right now I'm rendering as a Quicktime movie using the animation codec.

My question is if there is a better codec that will compress the file further so my final isn't so big. I typically render out to mp4, but with an Alpha you can't use h.264. Is there a better configuration I could be using?

FYI, the animation is of a stopwatch with the second hand ticking by. That's it.

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Todd KoprivaRe: RGB+Alpha Render
by on Oct 17, 2014 at 5:07:39 am

The PNG codec in a QuickTime container can give smaller files than the Animation codec for images that are not large expanses of flat color.

Todd Kopriva, Adobe Systems Incorporated
After Effects quality engineering
After Effects team blog

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Walter SoykaRe: RGB+Alpha Render
by on Oct 17, 2014 at 10:00:47 am

Can you tell us what the next step is with this rendered file? It's hard to give codec advice without knowing how it will be used.

In addition to the PNG codec Todd mentions, CineForm, DNxHD and ProRes can all carry alpha.

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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