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Color shifts during dissolves in 1080i 29.97 DVCPro HD timeline…
When dissolving from a Black and White photo (.PNG, .targa, .tiff) to black, there is a greenish cast during the event–the vectorscope backs me up.
Anyone else notice this? My work-around is to use the opacity level control to fade to black.
Timeline settings: DCVPro HD 29.97, Playback Quality: High, Video Processing: 8-Bit YUV, Process Max White as: White, Motion Filetering Quality: Normal.
Any ideas?
-P
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5 Replies
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[Pierson] “When dissolving from a Black and White photo (.PNG, .targa, .tiff) to black, there is a greenish cast during the event–the vectorscope backs me up.”
if your not using any media and doing a cross dissolve to a blank canvas that is correct.
dropping a a black slug in has been known to correct the problem.Gary Adcock
Studio37
HD and Film Consultation
Chicago, IL USA -
[gary adcock] “dropping a a black slug in has been known to correct the problem.”
The green shift also happens during dissolves over video. Soooo…I took your slug suggestion one step further: I nested the .PNG with a piece of slug and applied the trans to the Nest–looks fine. Laborious, but fine. I haven’t noticed this kind of thing before, though, is this endemic to DVCPro HD timelines?
Why would slug make a difference?
-p
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Hmmmm…even with slug, there is a slight green shift that starts at frame 23 in a 45 frame dissolve from video to the nested still I created earlier, which, BTW, is a grayscale PNG.
Strange…
-p
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[Pierson] ” I nested the .PNG with a piece of slug and applied the trans to the Nest–looks fine. Laborious, but fine. I haven’t noticed this kind of thing before, though, is this endemic to DVCPro HD timelines? Why would slug make a difference?”
the problem is in quicktime, you are doing an RGB > YUV conversion
(a grayscale file is still RGB) and that is where the problem is.
I have less of an issue with PSD or PDF files from photoshop (and yes you can use a PDF in FCP)
you may also try changing the color space to LAB and try that.Gary Adcock
Studio37
HD and Film Consultation
Chicago, IL USA -
Had the same problem. Apple fixed the problem. Check your sequence and make sure all of your boxes are checked in your render sequence.
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