Scaling Masks from 720X480 to 1280X720


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Scaling Masks from 720X480 to 1280X720
by Eric Goldstein on Nov 22, 2006 at 8:51:29 pm

Hi,

I'm scaling a project up from 720X480 to 1280X720. Footage is being scaled up seperately. I have existing masks that are keyframed. Is there a way to make a global change to the different key frames to scale everything at once?

Thanks for your help. Happy Thanksgiving.

Eric

Eric Goldstein
Giraffe Film Company
Los Angeles
eric@giraffefilm.com

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Re: Scaling Masks from 720X480 to 1280X720
by Eric Goldstein on Nov 22, 2006 at 9:48:41 pm

Hi it turns out that AE scales the mask according to the new layer size. So, I don't need to scale it. However,
the mask isn't positioned correctly. So, is there a way to globally change the position of the mask for all key frames?

Thanks,

Eric

Eric Goldstein
Giraffe Film Company
Los Angeles
eric@giraffefilm.com

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Re: Scaling Masks from 720X480 to 1280X720
by Straight A on Nov 22, 2006 at 11:02:54 pm

Put your timeline bar over one of the masks key frames, highlight all the keyframes you want moving together then move your mask.

All the mask positions with keyframes highlighted will be moved together.

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Re: Scaling Masks from 720X480 to 1280X720
by Eric Goldstein on Nov 22, 2006 at 11:39:03 pm

Thanks,

I tried what you suggested, but only the keyframe unter the CTI changed. I'm working in AE 6.5. Does this work in 6.5?

Thanks,

Eric

Eric Goldstein
Giraffe Film Company
Los Angeles
eric@giraffefilm.com

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Re: Scaling Masks from 720X480 to 1280X720
by Straight A on Nov 23, 2006 at 12:48:47 am

Hmmmm...

Just tried it and you are right it doesn't work !!

I know that selecting all the key frames for other values (like position) and moving one - moves them all, but it doesn't seem to work for masks :(

Can you not just move the layer position to where you want it ?

Or copy the mask onto a new white solid, put it on a black background pre-comp them both and use this a matte.

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Re: Scaling Masks from 720X480 to 1280X720
by Dave LaRonde on Nov 24, 2006 at 5:33:51 pm

[Eric Goldstein] "...it turns out that AE scales the mask according to the new layer size. So, I don't need to scale it..."

Are you sure the mask isn't off horizontally? As in 1.2 times as wide if you were working in 720x480 widescreen to start?

720x480 widescreen has a pixel aspect ratio of 1.2, and 1280x720 uses square pixels. I'm trying to figure out how only the position of the masks could be off and not their width, too.

Dave LaRonde
Sr. Promotion Producer
KCRG-TV

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Re: Scaling Masks from 720X480 to 1280X720
by Eric Goldstein on Nov 25, 2006 at 5:00:28 am

Hi Dave,

I'm working with 720X480 .9 pixel size. Actually the mattes are coming up slightly off horizontally and vertically. But once I line them up, they fit without any other adjustments.

Eric

Eric Goldstein
Giraffe Film Company
Los Angeles
eric@giraffefilm.com

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