NextPreviousHomeHow can I export the alpha channel?

michiel | 5 years ago | 4 comments | 7 likes | 2,868 views

ID Production, Dani, liuyongcai and 4 others like this!

Here's a trick to export the alpha channel:
1) Select the camera layer
2) Press the CHANGE EFFECT... button and select Effects/Export/CheckAlpha.fx
3) Set the FX SHOW ALPHA CHANNEL property to 1
4) Choose FILE > EXPORT AS MOVIE... and select UNCOMPRESSED AVI WITH TRANSPARENCY

The CheckAlpha.fx that comes with the installer has problems rendering the alpha channel at the borders of the screen. This is fixed in the version attached to this article.


Download media files (1.2 KB)

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Beyond cool, thanks Michiel!

BillyJack, 5 years ago


Thank you,michiel

liuyongcai, 5 years ago


how to create an transparent background in bluff?

mrbernd, 5 years ago

mrbernd, the background is always transparent.

It's the layers in front of it that make it non-transparent. For example a full screen background picture removes all transparency.

michiel, 5 years ago


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About michiel

Michiel den Outer is the founder and lead coder of Outerspace Software. He lives in Rotterdam, the Netherlands.

If he isn't busy improving BluffTitler, he is playing the piano or rides the Dutch dikes on his bikes.

Contact michiel by using the comment form on this page or at michiel@outerspace-software.com