Exporting animation without a background


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Exporting animation without a background
by Will Gaffney (Raw Sound) on Sep 10, 2008 at 12:57:42 am

I'm currently working on a documentary and have just finished creating the titles of each persons name that features.

Basically I just imported a PSD layer containing their name into AE CS3 and then animated it to slide on screen, then dissolve. Very basic but actually looks quite good.

What I'm having trouble with is exporting the animation as a 1440 x 1080 resolution .MOV file (or other high-res format) without the black background. All I want is to export the animation itself so I can then import it into Prem Pro CS3 and put over the top of a another video file in the timeline.

Can anyone explain how I can do this??

Thanks
Will G

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Re: Exporting animation without a background
by Chris Wright on Sep 10, 2008 at 1:49:35 am

render out - rgb+alpha at millions+ straight(not premultiplied)

there's a transparency box you can click in viewer and it should go from black to checkerboard squares, that will will confirm you have a transparency in place. if that doesn't work, you'll need to key out the black.

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Re: Exporting animation without a background
by Will Gaffney on Sep 10, 2008 at 2:34:00 am

I tried using the settings above but it didnt work.

Also, when I get the footage into ppro, I click "Ignore Alpha Channel" is this the right thing to do?

Also, by exporting as "straight" it actually distorted the animation.

Does anyone else have any ideas?

I did a doco about a year ago where I had someone else do the titles and they achieved this without having to key out the black...

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Re: Exporting animation without a background
by Dave LaRonde on Sep 10, 2008 at 5:41:09 pm

[Will Gaffney] "...when I get the footage into ppro, I click "Ignore Alpha Channel" is this the right thing to do? "

That is exactly the WRONG thing to do. If you tell Premiere to ignore the alpha channel, you eliminate its ability to read the transparency information contained in the file.

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA

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