Chroma subsampling confusion? at DVinfo.net

Laurence Currie-Clark · October 7th, 2005, 04:25 PM

Is it correct to state that many people confuse rate and quantity when talking about chroma subsampling? I feel people understand 4:1:1 as different quantities when it is really about different rates, or is this just an self created illusion?

Graeme Nattress · October 7th, 2005, 05:02 PM

There's a lot of confusion. A lot of people say "colour space" when they mean "chroma sampling". Others get 4:1:1 and 4:2:0 mixed up, and others think 4:1:1 is lower quality colour than 4:2:2, when really, it's just lower resolution colour!

http://www.lafcpug.org/Tutorials/bas...ma_sample.html

Is an article I wrote to help reduce confusion!

Graeme

October 7th, 2005, 04:25 PM	#1
Laurence Currie-Clark New Boot Join Date: Jun 2005 Location: Nivelles, Belgium Posts: 22	Chroma subsampling confusion? Is it correct to state that many people confuse rate and quantity when talking about chroma subsampling? I feel people understand 4:1:1 as different quantities when it is really about different rates, or is this just an self created illusion?

October 7th, 2005, 05:02 PM	#2
Graeme Nattress RED Problem Solver Join Date: Sep 2003 Location: Ottawa, Canada Posts: 1,365	There's a lot of confusion. A lot of people say "colour space" when they mean "chroma sampling". Others get 4:1:1 and 4:2:0 mixed up, and others think 4:1:1 is lower quality colour than 4:2:2, when really, it's just lower resolution colour! http://www.lafcpug.org/Tutorials/bas...ma_sample.html Is an article I wrote to help reduce confusion! Graeme __________________ www.nattress.com - filters for FCP