[Scott Sonnenberg]

You used to be able to do an embedded alpha in an FLV right out of AE 7. For some reason Adobe changed the FLV encoder in AE CS3 and stripped this feature.

When I had to make one I got nervous for a second. Then I figured it out.

First render out an Animation codec quicktime with an embedded alpha. Then use the stand alone Adobe Flash CS3 video encoder. In the video settings click “Encode alpha channel”. This same encoder with this exact interface used to be in AE 7.

Thanks Adobe for making things really lame.