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Weird keying issue
My company is coming to the end of a major (for us) VFX post process, using After Effects mostly as a compositing tool.
For various workflow reasons, one of us has been using a PC and another has been using a Mac (one of four attatched to a SAN that we’d like to use for rendering).
In the last couple of days we’ve come across a very weird issue – that a project keyed and set-up perfectly on the PC has a less-than-perfect key when opened on the Mac. It’s not purely a display issue, we’re seeing blotches of colour on the Mac that simply aren’t there on the PC.
It’s most obvious on the built-in colour range plugin (used as the first stage in a longish effect stack) but we’ve seen it in Keylight as well – not yet on Primatte but I wouldn’t rule out it being on there.
We think that it’s most likely a colour-space issue between the two systems; the AE colour space is set to ‘None’ in the projects, but I don’t know what this actually means in terms of the colour-space being used, presumably some kind of system setting? Changing the AE project setting hasn’t affected the keys, just the colour of the image.
Both systems have the same version of QuickTime and we’ve tried ensuring that the same codecs are used on both machines to no avail (the media is uncompressed 10-bit QuickTime from the FCP Media Mangler, the PC is using BlackMagic to interpret it – removing all other uncompressed codecs from the Mac, rebooting and opening the project, ensuring that AE is showing that BlackMagic is being used – no joy).
Has anyone encountered anything like this? It’s going to be a painful week if we can’t get to the bottom of it 🙂
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