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to change composition size

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efraim or
to change composition size
on Apr 20, 2010 at 5:23:16 pm

Hi guys.
ok, Im trying to do this guide: http://ae.tutsplus.com/tutorials/vfx/create-a-breathtakingly-awesome-rain-s...

now... almost there....just one problem.
you can see here in this pic: http://aetuts.s3.amazonaws.com/039_awesomerain/-170.jpg

that he's showing how to get the camera work done.
the thing is... he's working on 1280X720 and I'm working on 720X480.
so I simply cant get it done.

all the numbers should be different here in my comp, and I cant figure it out.

any help guys?
is there any way to calculate the proportion and to get the same result in the other comp size?

thank you.


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Dave LaRonde
Re: to change composition size
on Apr 20, 2010 at 5:41:52 pm

It's going to be tough. There are two issues: the obvious difference in the horizontal and vertical resolution of the comps, and the other is pixel aspect ratio. If your 720x480 comp is widescreen, the pixel aspect ratio is 1.33; if it's a 4x3 comp, the pixel aspect ratio is 0.9... but in the 1280x720 comp, it's a 1.0 (square) pixel aspect ratio.

Try working in the 1280x720 comp. Get the numbers to match up. When done, nest the larger comp inside the smaller one, and scale the larger one to fit.

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


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efraim or
Re: to change composition size
on Apr 21, 2010 at 4:58:24 pm

thank you.


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