Comments

MSmart wrote on 9/30/2012, 11:55 AM
Yes, create a mask in your favorite photo editor using white for what you want to keep and black for what you want to mask out. Save it a s .png file with alpha channel preserved.

Here's an old thread that explains it:

http://www.sonycreativesoftware.com/forums/ShowMessage.asp?ForumID=12&MessageID=459259

You can also find tutorials on youtube.
ArtfulCodger wrote on 9/30/2012, 2:14 PM
Yeah, his explanation doesn't work - the black remains black.

And what would you search for on youtube?
ArtfulCodger wrote on 9/30/2012, 2:25 PM
But if the picture itself has an alpha channel that seems to work, so thanks for that.