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Vegas & Alpha Channels Problem
Hi,
I’ve been using Sony Vegas for a while now and have only just started to use Alpha Channels. The problem is I simply can’t get them to work. I created an Alpha Channel in Photoshop, black background with the white areas I want to be transparent, checked it in the channels panel and it’s there. I saved the image as a TIF file and imported it into vegas above my video track. I chose “Straight Unmatted” as my Alpha type but that takes out the background, none of the other Alpha types work either. I simply want to show the rest of the photograph but have transparent areas where I want the video underneath to show through.
What am I doing wrong, can anyone help?.
-Thanks
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5 Replies
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I save all my Photoshop files out as PNGs, even those with alpha channels, and never have any problems with Vegas.
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I have saved the file as a PNG with no luck however if I change my Alpha Channel colors around, a white background with black areas where I want transparency, it works fine in Vegas. I don’t know the reason for this because in other programs like Premiere Pro the correct way is a black background with white ereas.
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If I’m working in Photoshop and I want something to be transparent, I’ll make it transparent, not black, white or any other colour.
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I could do this but I’ll be using the image in video editing software afterwards and I also don’t want to destroy any pixels on the image. I want the video to show through in the transparent areas. Not only this, but I’m creating a tutorial on how to use Alpha Channels.
Anyway it works ok now, thanks.
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Glad to hear that you got it working.
For the record, Vegas doesn’t like TIF files as it has to make a call to QuickTime for each and every frame used which slows things down.
PNG or Targa is a much better choice.
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