FLASH: alpha channels and masking in flash - help needed

[Tim Allan]

I have a series of 25 bitmaps, part of an animation sequence of a (you

guessed it) globe spinning around.


It is rendered onto a black background.And as a series of bitmaps, the swf

size is about 10k (great!!)


I need the globe to be used over various backgrounds, so I need a way of

removing the black area. Tracing the bitmap and remvoing the black area

increases the file size so much it is unusable.


Is there a file format the flash recognises that uses alpha channels??


Many thanks in advance


Tim




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