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Bitmap with an alpha channel?

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Judge Schmells
Bitmap with an alpha channel?
on May 12, 2005 at 4:10:43 pm

I didn't think that Bitmaps had alpha channels. Am I incorrect in this? I am using Canopus Procoder to encode some video and it has a "Bitmap Keying" option to add a watermark. But it says that you can enable the alpha channel if your image has one. I am still using Photoshop 6, so maybe my version doesn't support it?

thx!

Judge S.


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Jeff Cochran
Re: Bitmap with an alpha channel?
on May 13, 2005 at 6:19:13 am

There are really two types of Bitmap files.

The First is a .BMP that can be saved with a color space of RBG. This file can have an alpha channel.

The second is a file with a color space of Bitmap. The bitmap color space allows for only two colors: 100% Black and white. This file can be saved in many formats. This file cannot include an alpha channel

Jeff Cochran

http://www.jeffcochrandigitalartist.com/


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