Movie Studio 14 Platinum
Movie Studio 13 Platinum
Vegas Edit Pro
Vegas Pro
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here is the original image , made in Microsoft Paint ,...mspaint , as 24 bit color
the alhpa channel of this 24 bit image, as presented by Vegas , is ALL White
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vegas shows the source image Properties , is a 24 bit image.
the alpha channel of this 24 bit image, as presented by Vegas , is ALL White
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next ,
shows Video FX Effect "Channel Blend" , which "Stuffs" the alpha channel .
the original RGB channels remain the same .
the RGB channels have been Stuffed into the Alpha channel .
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next ,
shows the imported image, has properties of 32 bit with Alpha channel
note "Pre-Multiplied" is being used .
this 32 bit image was made from MS14P using the Viewer Window , Best-->Full
and clicking Save As to make 32 bit .png image .
( using a Render Template , a ".avi 32 with alpha channel" video could have been made )
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next ,
the Luminace channel of the 32 bit image
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next ,
the Red channel of the 32 bit image
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next,
the Green channel of the 32 bit image
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next ,
the Blue channel of the 32 bit image
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next ,
the Alpha channel of the 32 bit image
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the above shows that it is easy to add an alpha channel to ANY 24 bit source media .

before rendering\exporting as 32 bit , inspect to see that the Alpha channel has been built ,
by placing a FX "Mask Generator" , on the Right Side of FX "Channel Blend" .
then scroll Mask Generator combo box to : Alpha .
if the screen shows All White , then the alpha channel has NOT been built yet .
set up Channel Blend as shown above , to build the Alpha channel .