Chroma keying to transparency for an alpha channel? at DVinfo.net

David Delaney · August 25th, 2007, 06:39 PM

Chroma keying to transparency for an alpha channel?

Is there a way to chroma key to alpha? I have a clip I rendered out in Vegas that I want to take over to AE for some 3D enhancements. Some of the FX I have put on in Vegas can only be done in Vegas, so that is why I am not compositing and chroma-keying everything in AE. I need to chromakey this actor with the green background turning to an alpha channel...any ideas?

Magnus Helander · August 26th, 2007, 11:57 AM

Render as AVI uncompressed (default) and select the "Render Alpha Channel" checkbox which will give you a (very likely large) 32 bit uncompressed AVI file.

Think there is a way to do this using Quicktime format as well, havn't tried though.

/magnus

August 25th, 2007, 06:39 PM	#1
David Delaney Trustee Join Date: Feb 2006 Location: Niagara Ontario Canada Posts: 1,121	Chroma keying to transparency for an alpha channel? Chroma keying to transparency for an alpha channel? Is there a way to chroma key to alpha? I have a clip I rendered out in Vegas that I want to take over to AE for some 3D enhancements. Some of the FX I have put on in Vegas can only be done in Vegas, so that is why I am not compositing and chroma-keying everything in AE. I need to chromakey this actor with the green background turning to an alpha channel...any ideas?

August 26th, 2007, 11:57 AM	#2
Magnus Helander Major Player Join Date: Nov 2003 Location: Sweden Posts: 221	Uncompressed AVI Render as AVI uncompressed (default) and select the "Render Alpha Channel" checkbox which will give you a (very likely large) 32 bit uncompressed AVI file. Think there is a way to do this using Quicktime format as well, havn't tried though. /magnus __________________ Magnus Helander, Crossmediageek on G+