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Pink/purple pixels in clipped highlights only in 16 and 32bpc

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Robert CuadraPink/purple pixels in clipped highlights only in 16 and 32bpc
by on May 18, 2012 at 2:49:00 am

Hello all,

I put my color space in 16bpc and the clipped highlights show pink/purple pixels. i thought they were just warning, but when I render them out, they show up still. They don't show in 8 bpc. i tried other projects I have, but with teh same result. After effects CS5.5 Picture is attached.


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Walter SoykaRe: Pink/purple pixels in clipped highlights only in 16 and 32bpc
by on May 18, 2012 at 3:57:08 pm

What kind of footage are you using? Any effects applied?

Walter Soyka
Principal & Designer at Keen Live
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Robert CuadraRe: Pink/purple pixels in clipped highlights only in 16 and 32bpc
by on May 18, 2012 at 6:12:25 pm

Thanks for the reply. No effects or color grading. It looks like it might be a DNxHD issue. No matter what flavor (36-175 10 bit), the same clipping purple, blue, pink pixels occur. Animation codec and Cineform codec there's no issue.
Any ideas what DNxHD is doing this? 8 bit is fine though.

Thank you!


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Robbin BruzeliusRe: Pink/purple pixels in clipped highlights only in 16 and 32bpc
by on Jun 1, 2012 at 9:43:57 am

I am having same problem. Are you using files from hyperdeck shuttle2 captured in dnxhd.mov format and are you on a windows machine?


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Robert CuadraRe: Pink/purple pixels in clipped highlights only in 16 and 32bpc
by on Jun 1, 2012 at 11:31:55 pm

Hey, go here:
http://community.avid.com/forums/p/109346/633841.aspx#633841

it's a DNxHD issue.

Salud

Thank you!


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