Baffling color correction export problem at DVinfo.net

Joshua Clarke · October 5th, 2006, 09:24 AM

I have been having a bugger of a time figuring this one out. There is one group of similar scenes (same setting, subject, camera settings) in my timeline of a 24-minute project that seems to not be taking the color correction I apply when exported.

I've tried multiple things: FastCC, 3-Point CC, Luma mask. I can get the hot shirt on the subject to where I want it to be in the timeline, but when exported, the CC does not take for ONLY the scenes involving this subject. All other scenes that have been CC'd export properly.

I've screened some shots to show you what I mean.

Here is the source file straight from the camera:

http://www.sect1.com/files/josh/source.bmp

Here is the effect done to my liking:

http://www.sect1.com/files/josh/timeline.bmp

Here are the settings used:

http://www.sect1.com/files/josh/effectcontrol1.bmp
http://www.sect1.com/files/josh/effectcontrol2.bmp

And here is what it looks like when exported:

http://www.sect1.com/files/josh/export.bmp

Any help would be greatly appreciated.

Nate Weaver · October 5th, 2006, 12:24 PM

Looks like the luma in the shirt might be over threshold, and being clamped.

I'd look for a broadcast safe component in the export chain.

Or, to really fix it, you might need to bring down saturation and the white level in the CC filter.

Dave Ferdinand · October 6th, 2006, 01:04 PM

For a start, great job with the CC there.

Second, are you using PPro 2.0? I don't remember seeing a FastCC on 1.5

Regarding the luma clipping I remember having a video limiter option in the Color Corrector that display the same effect if switched on - are you using it in this clip?

Dave Ferdinand · October 6th, 2006, 01:11 PM

http://www.geocities.com/headlesspup...f/cctest3b.jpg

Joshua Clarke · October 6th, 2006, 07:26 PM

Dave,

Yes I am using PP2.0. I had applied a video limiter at one point, when it was FastCC'd and had a luma mask applied. This was actually the beginning of my problems. When I first exported and played back with these settings applied is when I noticed that something was getting messed up in the export.

One person I spoke with believed it might be a problem with having applied and deleted various effects. I'm not sure of the validity of that however.

October 5th, 2006, 09:24 AM	#1
Joshua Clarke Regular Crew Join Date: Jul 2006 Location: Philadelphia, PA Posts: 88	Baffling color correction export problem I have been having a bugger of a time figuring this one out. There is one group of similar scenes (same setting, subject, camera settings) in my timeline of a 24-minute project that seems to not be taking the color correction I apply when exported. I've tried multiple things: FastCC, 3-Point CC, Luma mask. I can get the hot shirt on the subject to where I want it to be in the timeline, but when exported, the CC does not take for ONLY the scenes involving this subject. All other scenes that have been CC'd export properly. I've screened some shots to show you what I mean. Here is the source file straight from the camera: http://www.sect1.com/files/josh/source.bmp Here is the effect done to my liking: http://www.sect1.com/files/josh/timeline.bmp Here are the settings used: http://www.sect1.com/files/josh/effectcontrol1.bmp http://www.sect1.com/files/josh/effectcontrol2.bmp And here is what it looks like when exported: http://www.sect1.com/files/josh/export.bmp Any help would be greatly appreciated.

October 5th, 2006, 12:24 PM	#2
Nate Weaver Wrangler Join Date: Oct 2002 Location: Los Angeles, CA Posts: 2,100	Looks like the luma in the shirt might be over threshold, and being clamped. I'd look for a broadcast safe component in the export chain. Or, to really fix it, you might need to bring down saturation and the white level in the CC filter. __________________ My Work: nateweaver.net

October 6th, 2006, 01:04 PM	#3
Dave Ferdinand Major Player Join Date: Jan 2005 Location: Vancouver, BC Posts: 359	For a start, great job with the CC there. Second, are you using PPro 2.0? I don't remember seeing a FastCC on 1.5 Regarding the luma clipping I remember having a video limiter option in the Color Corrector that display the same effect if switched on - are you using it in this clip? __________________ Do or do not, there is no try.

October 6th, 2006, 01:11 PM	#4
Dave Ferdinand Major Player Join Date: Jan 2005 Location: Vancouver, BC Posts: 359	http://www.geocities.com/headlesspup...f/cctest3b.jpg __________________ Do or do not, there is no try.

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October 6th, 2006, 07:26 PM	#5
Joshua Clarke Regular Crew Join Date: Jul 2006 Location: Philadelphia, PA Posts: 88	Dave, Yes I am using PP2.0. I had applied a video limiter at one point, when it was FastCC'd and had a luma mask applied. This was actually the beginning of my problems. When I first exported and played back with these settings applied is when I noticed that something was getting messed up in the export. One person I spoke with believed it might be a problem with having applied and deleted various effects. I'm not sure of the validity of that however.