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[Dale Anderson]

Jethro, my friend, you still out there amigo? Just got back into town and still having the same issue of the green screen footage being transparent like a ghost. Any thoughts?

[Simon Hutchinson]

Hi Dale,

I’ve done some asking around and unfortunately there is no magic bullet for this as far as I can tell. The only way to do this cleanly is to “Key” the footage first. In Ae or NUKE or in a similar application. There is the option to use a KEY color in the Alpha channel, but to place an image in the “Alpha Channel”, only makes sense if the image has an alpha channel included.

To a certain degree you can use the Layer transparency, but this will not get the best results. The “Layer Transparency” is a pre-multiplied image, and without the Alpha channel, which created the transparency in the first place, you might not un-premultiply successfully to get a clean alpha channel back.

You might want to check what green screen you have been using, as there is a fine art to it. Those in the know say that simply adding a green screen behind your target will unlikely yield you the results you may be after.

Hope this helps you.

“Democracy cannot consist solely of elections that are nearly always fictitious and managed by rich landowners and professional politicians”

Che Guevara

[Dale Anderson]

Gudday mate,

Ghosts in the machine is all I can say because now it seems to work just fine.. I’d already pre-keyed the footage in AE and it looked great. But when I put it on C4D the key worked great but the image was semi transparent. I always back my work up to another drive and when I opened the back up, the damned thing works perfect!! Still can’t get the main project to work without it being ‘ghosty’ but the back will work just as well. If anyone has a theory, I’d love to hear it!

[David Franklin]

I would like to second Dale’s comment, and thank you, Jethro, for bothering to come back and answer your own question. Especially since this is still the only discussion thread I was able to find that discusses this issue, which was certainly stymying me this evening. So thanks, both of you, almost TWO YEARS after the fact. : )