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FCP HD and DVCPRO HD Gamma Shift
Can anyone explain why my DVCPRO HD footage becomes darker when I play my sequence, but once stopped becomes lighter? Inerestingly this only happens in the canvas and not the viewer. I am using the DVCPRO HD 720p60 preset as I am supposed to and have made no adjustments to the video processing setting.
I have heard and been dealing with a problem with gamma shift in FCP using DVCPRO HD media for the duration of this project, whereas when I would use simple dissolves a gamma shift would occur at the head and tail of the dissolve (same for using keyframe opacity fading).
At a recent Los Angeles Final Cut Pro Users Group meeting I was told this was addressed in FCP 5 and should no longer be a problem, though this should be a free update rather than have to purchase a new version of FCP to correct a faulty one.
My config:
G5 Dual 2/4 GB RAM/ 250 x2 Internal SATAs/ 3.5 TB Xserve RAID/ ATI Radeon 9600 XT/ ATI Radeon 9200/ Decklink Extreme/Tiger (MacOS 10.4.1)/
Apple 23″ HD Cinema Display/ Apple 17″ Cinema Display/ Sony 50″ Wega DLPDVCPRO HD Project @ 720p60
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3 Replies
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Does this happen after material has been rendered? I notice a similar effect when working in lower sequence resolution.
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No rendering, just the clip on the timeline.
Tangier
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You’re probably using old Decklink drivers. Update them, and that should fix it – it did for me.
Graeme
– http://www.nattress.com – Film Effects for FCP
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