i can't seem to get pix_alpha to work with a .mov file. does this object in fact not work with movies? if so, is there a way to achieve it's functions with a movie?

the chain should be:

gemhead
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[colorRGB 1 1 1 1] <- the last inlet is an alpha-channel on a 0-1 range
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[alpha]
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[pix_movie]
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[rectangle]

however, all i ever got was a pink & green psychedelic flashing, and therefore using pix_film is more practical.
the renderchain goes like this:

gemhead
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[alpha]
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[pix_film]
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[pix_alpha] <- see the help file for setting up high- and low pass. good for lumakeying.
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[pix_texture]
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[rectangle]