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DV Keying problem when using BCC filters – getting a video studder with movement
First, I’m using a Dual 2.7 GHz G5 and fcp 5.0.4.
I’m editing in 8 bit uncompressed with a Kona card.I’m keying a piece shot in DV. I can actually get a wonderful, beautiful key using a combo of the Boris BCC Chroma Key filter and the BCC Matte Choker along with the Mask Feather. Love it!
Except for one piece. When I use the two BCC filters together in the same clip I get a studder or stagger in anything that has a quick motion. For instance, I have to guys sitting down and interviewing eachother. The key is great around their bodies – which are relatively still… however, when they get talking and their hands move – their hands have a tendency to studder a bit. Now if their hands are moving in front of their body – the studder/stagger does not occur. It just occurs when the hands are keyed and moving.
If I only use one of the filters, this does not occur. It’s only when I use both of the BCC filters together.
I’ve really worked on trying to get a good clean key using regular fcp filters – but I just can’t get the same perfection as with the BCC filters together.I’m using an 8 bit uncompressed timeline, however, I’ve also tried it using a DV timeline with the clip taken in DV firewire to see if that made a difference with the filters – it didn’t. I still got the staggers!
Any thoughts on this…
Thanks,
Kate -
2 Replies
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Kate,
Don’t have an answer for what you’re using now, but I have what may provide a viable alternative.
https://www.dvgarage.com/prod/prod.php?prod=conduit15
Conduit is node based, but pretty easy to grasp, but what to look for is the demo movie on keying DV footage with it, here:
https://www.dvgarage.com/prod/prod.php?prod=conduit15&sub=samples
It is remarkable, and comes from the same folks who brought us DVmattePro. (not a bad answer for you either!)
BTW the subject in their demo is a talking head who shakes her hands in the shot, so it should be just what you need.
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Good to know… if I can’t find a good solution to this, then I am going to look into other options like this.
Thanks!
Kate
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