Alpha channel AE cs3?

[Erik Pontius]

Is the text and stuff in your Flash project or in AE?
If your text is in your flash project and you want the video you created in AE to sit on top of it…you’ll need to select the option in your flash encoder to preserve the transparency. Otherwise it will ignore it and flatten your video, causing the background to be opaque.

Erik

[Hamid Rohi-bilverdy]

Hey..

My text is in flash cs3.

Where or how in the flash cs3 encoder can i choose the option
” to preserve the transparency”

I´cant seem to find it..

Hamid

[Erik Pontius]

You may not have it. Like I said alpha channels are only supported in Flash 8 and higher.
In my case, I’m using the On2 Technologies, Flix encoder, which is a Flash 8 encoder. There is an option in the lower right hand corner for Alpha Channel with a little checkmark for “Preserve Alpha”

You can download a demo from here:
https://www.on2.com/index.php?316

Erik

[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.