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Odd z-space issue

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Dylan HargreavesOdd z-space issue
by on Sep 28, 2010 at 1:19:00 pm

Hi all,

AE CS5 behaving very oddly with a simple z-space manoeuvre of a line of text.

Basically, I want the text to fly in from the horizon towards camera and then slow right down so it's just creeping forwards slightly over the course of a few seconds. Simple right?

So, text is pushed back in z-space to 10,000, keyframed, then flies towards camera over 8 frames to 0, keyframed, and then creeps forward to -100 over the course of 2 seconds.

But for some reason, the move between 0 and -100 goes crazy - the z-position goes up to -700 then bounces back to the keyframe position at -100.

There are no other keyframes anywhere in the timeline, no scaling change, nothing. No reason at all why it shouldn't just do a slow, smooth creep from 0 to -100.

I tested it switching off the first part of the move from 10,000-0 so it was just moving 0 to -100 and it works fine. It's just that initial fly in is doing something very odd to the rest of the move.

Maybe something to do with keyframe interpolation?


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John CuevasRe: Odd z-space issue
by on Sep 28, 2010 at 1:36:14 pm

You are correct, it's a keyframe interpolation issue. If you select all the keyframes and right click you can change the interpolation to linear.

Check out this page for a lot more detail:

Johnny Cuevas, Editor

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Dylan HargreavesRe: Odd z-space issue
by on Sep 28, 2010 at 1:45:07 pm

Cracked it. Thanks Johnny,

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Dave LaRondeRe: Odd z-space issue
by on Sep 28, 2010 at 2:59:05 pm

[Dylan Hargreaves] "Maybe something to do with keyframe interpolation?"

Kinda-sorta. John's recommendation to turn keyframes to Linear will definitely work, but it may not be the look you want.

If you still have the Bezier keyframes you started with,check out the Motion Path Handles on each keyframe. You may simply have to get the motion path squared away to get the movement you wanted. Check out Aharon Rabinowitz' two podcasts about the Boomerang Effect for more info.

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

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Dylan HargreavesRe: Odd z-space issue
by on Sep 29, 2010 at 10:04:39 am

Thanks Dave, that does look better!

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