[jitter] Alpha and Videoplanes Again Please?

Hi everybody,
This problem sounds simple but I've been dealing with it for some time now and after looking at past posts I still can't get it to work.  I'm trying to play many small videos that overlay eachother in the same window so I need to eliminate the bg.  I'm sending object "jit.gl.videoplane test @blend_enable 1" to "jit.gl.render test @ortho 2 @erase_color 0 0 0 1". This works for .png images but I'm desperately trying to figure out how to get it to recognize the alpha channel for a qt movie.  I attached a simple patch of what I am talking about.

Thanks your help is greatly appreaciated
Greg
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