DIY DV chroma reconstruction? at DVinfo.net

Frank Ladner · December 19th, 2004, 10:31 PM

Anyone know of a method to reconstruct (or upsample) the chroma info in DV (4:1:1) footage within After Effects?

Is there a 'trick' that can be done that wouldn't require a plugin?

Thanks!

Glenn Chan · December 20th, 2004, 01:48 AM

You can't get information that isn't there in the DV signal, although there are some things you can do.

A- Chroma blur.
B- Intelligent-er chroma upsampling. One method is Graeme Nattress' method (final cut pro plug-in), which I believe also uses luminance information to make the upsampling look better.
check out nattress.com

I don't use AE but it should likely have a chroma blur filter.

Frank Ladner · December 20th, 2004, 10:16 AM

I did some Google searching and a mention of Graeme's plugin is on nearly every result. LOL! I have checked out his images and explanation of how the plugin works. I am impressed with it, but it's for FCP.

How would I do a chroma blur? ie. how do I get the chroma info out, blur/upsample, and get it back in?

If there's a feature like this in AE, I am unaware of it.

December 19th, 2004, 10:31 PM	#1
Frank Ladner Major Player Join Date: Aug 2003 Location: Poplarville, MS Posts: 453	DIY DV chroma reconstruction? Anyone know of a method to reconstruct (or upsample) the chroma info in DV (4:1:1) footage within After Effects? Is there a 'trick' that can be done that wouldn't require a plugin? Thanks!

December 20th, 2004, 01:48 AM	#2
Glenn Chan Inner Circle Join Date: Jun 2003 Location: Toronto, Canada Posts: 4,750	You can't get information that isn't there in the DV signal, although there are some things you can do. A- Chroma blur. B- Intelligent-er chroma upsampling. One method is Graeme Nattress' method (final cut pro plug-in), which I believe also uses luminance information to make the upsampling look better. check out nattress.com I don't use AE but it should likely have a chroma blur filter.

December 20th, 2004, 10:16 AM	#3
Frank Ladner Major Player Join Date: Aug 2003 Location: Poplarville, MS Posts: 453	I did some Google searching and a mention of Graeme's plugin is on nearly every result. LOL! I have checked out his images and explanation of how the plugin works. I am impressed with it, but it's for FCP. How would I do a chroma blur? ie. how do I get the chroma info out, blur/upsample, and get it back in? If there's a feature like this in AE, I am unaware of it.