Color Correction problem at DVinfo.net

Alex Raskin · December 2nd, 2005, 07:54 PM

AHD Color Corrector effect was applied to a clip on PPro 1.5 timeline.

Underneath that clip there happened to be another clip, which therefore was not visible, at 50% the length of the one on top.

On Render to AND AVI, the clip on top changed its color visibly between the first half and the second half, exactly at the point where the underlying clip ended.

So it seems like AHD Color Corrector is affected by underlying clips??

Is it a known AHD Color Corrector issue?

Thanks.

David Newman · December 2nd, 2005, 11:49 PM

Unlikely, as Premiere is doing the render and the Color correction filter are standard Premiere plug-ins. Premiere filters are not aware of layers, Premiere handles the sequence and layering for such renders. Sometimes the opacity or motion appears to be off but there are undergoing a very small effect. Maybe that happened.

Alex Raskin · December 3rd, 2005, 09:24 AM

Nope, opacity was my first suspect but it's 100% throughout the top clip.

Removing the underlying clip fixes the problem.

Weird.

I have to mention that there's 2 effects on the top layer: AHD Color Corrector, and PPro's Levels.

I haven't the time to test which one produces the problem, but since it manifests itself as COLOR change, Levels effect is probably not a suspect.

December 2nd, 2005, 07:54 PM	#1
Alex Raskin Trustee Join Date: Sep 2003 Posts: 1,435	Color Correction problem AHD Color Corrector effect was applied to a clip on PPro 1.5 timeline. Underneath that clip there happened to be another clip, which therefore was not visible, at 50% the length of the one on top. On Render to AND AVI, the clip on top changed its color visibly between the first half and the second half, exactly at the point where the underlying clip ended. So it seems like AHD Color Corrector is affected by underlying clips?? Is it a known AHD Color Corrector issue? Thanks.

December 2nd, 2005, 11:49 PM	#2
David Newman CTO, CineForm Inc. Join Date: Jul 2003 Location: Cardiff-by-the-Sea, California Posts: 8,095	Unlikely, as Premiere is doing the render and the Color correction filter are standard Premiere plug-ins. Premiere filters are not aware of layers, Premiere handles the sequence and layering for such renders. Sometimes the opacity or motion appears to be off but there are undergoing a very small effect. Maybe that happened. __________________ David Newman -- web: www.gopro.com blog: cineform.blogspot.com -- twitter: twitter.com/David_Newman

December 3rd, 2005, 09:24 AM	#3
Alex Raskin Trustee Join Date: Sep 2003 Posts: 1,435	Nope, opacity was my first suspect but it's 100% throughout the top clip. Removing the underlying clip fixes the problem. Weird. I have to mention that there's 2 effects on the top layer: AHD Color Corrector, and PPro's Levels. I haven't the time to test which one produces the problem, but since it manifests itself as COLOR change, Levels effect is probably not a suspect.