Alpha Transparency in Rotation animation

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Old 11 November 2006   #1
Alpha Transparency in Rotation animation

I am not sure if this is a simple question or not but there must be an easy way to do this in a quick and painless fashion. I am rendering an animation of a simple object in a 360º rotation. The end result is going to be used in a flash animation so I need the background of every frame of this rotaion (whether in movie or image sequence format) to be transparent. The old way I used to do it is a wicked pain (each frame being edited by hand using an additionally rendered mask sequence in a seperate file). Is there a composite setting or some tag I may apply to the object to make this happen? If not, is there a simple workflow to accomplish making the background of each frame transparent?
Hope I described this clear enough.

Thank you very much for your time and any help I can get from you all.

•MAH•
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Old 11 November 2006   #2
Nevermind...I'll do more research and figure it out like I always do.

Cheers
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Old 11 November 2006   #3
Just enable the multipasses and use an object ID on your object. You can then use that object ID to generate the alpha automatically in your compositing application.
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Old 11 November 2006   #4
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