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Video + Alpha for flash, Stright or premultiplied?

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toby HeslopVideo + Alpha for flash, Stright or premultiplied?
by on Sep 27, 2009 at 10:04:14 am

I'm rendering some interactive videos to hand over to a flash programmer and these have alpha channels, Should they be Striaght or premultiplied????


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Todd KoprivaRe: Video + Alpha for flash, Stright or premultiplied?
by on Sep 27, 2009 at 3:11:19 pm

See "Flash, FLV, and alpha channels: straight or premultiplied?".

This was one of the top results when I did a search using the title of this thread in the After Effects Community Help search.

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Todd Kopriva, Adobe Systems Incorporated
putting the 'T' back in 'RTFM' : After Effects Help on the Web
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If a page of After Effects Help answers your question, please consider rating it. If you have a tip, technique, or link to share---or if there is something that you'd like to see added or improved---please leave a comment.


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toby HeslopRe: Video + Alpha for flash, Stright or premultiplied?
by on Sep 27, 2009 at 9:42:13 pm

OK, But I'm not rendering to FLV.

Staying In Animation+ Codec and leaving the Web compression to the Programmer



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Todd KoprivaRe: Video + Alpha for flash, Stright or premultiplied?
by on Sep 28, 2009 at 3:44:48 pm

from the page that I linked to:

"Adobe Flash Professional and Flash Player only support alpha channels that are premultiplied with black. This is faster and simpler for Flash Player to decode than straight alpha channels. Flash Professional does not have a function to control how alpha channel colors are interpreted."



---------------------------------------------------------------------------------------------------------
Todd Kopriva, Adobe Systems Incorporated
putting the 'T' back in 'RTFM' : After Effects Help on the Web
---------------------------------------------------------------------------------------------------------
If a page of After Effects Help answers your question, please consider rating it. If you have a tip, technique, or link to share---or if there is something that you'd like to see added or improved---please leave a comment.


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