Check out this busted key – what are we doing wrong?

[Philippe Lessard]

It definitly look like a chroma issue, since you didnt see the “grid” in source footage it must be chroma.
Like i writed, try using a chroma blur third party plugin9(because AE didnt have one).

Or if your have the hardware, capture your footage from HD SDI output or event SD(if your ouput doest need to be hd), because your camera HDX900 have one and you’ll be able to capture 4:2:2 with a lot better chroma and overall picture quality!

Hope this help

[Kevin Camp]

it does look like there is a par issue… but there are several places things could have gone wrong.

you shot to dvcprohd 720p60 in 30p mode… dvcprohd 720 is natively 960×720 with a 1.33 par, but these files were captured form tape… so they could have been captured as square px (1280×720) in avid and could have been captured as a different codec.

then they could have been exported from avid in a different par and codec then they were captured with.

so there are many places that where this issue may have occurred. open the bad file that you have in ae, in a quicktime player and see if you see those vertical artifacts in qt. if you don’t then the problem is with ae somewhere, if you do, then the problem is before ae, either capture or export from avid…

Kevin Camp
Senior Designer
KCPQ, KMYQ & KRCW

[Travis Turner]

That’s the thing – you can turn keylight off and you can’t see the “grid”. I’ve tried all manner of par combinations but I still think this looks like a chroma sampling thing – which would mean you shouldnt see it in unkeyed footage anyway – I just didn’t know if there was something obvious I’m missing