Time Remapping issue (missing frame?)

[Todd Kopriva]

Show a screenshot of your composition, being especially careful to show your time remapping keyframes.

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Todd Kopriva, Adobe Systems Incorporated
After Effects quality engineering
After Effects team blog
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[Darby Edelen]

[Phil Rad] “I lengthened the animation out so it loops and it does it just fine but at every 40th frame, it disappears for one frame and loops again. I have no idea what is going on and it’s driving me nuts.”

Go to the last keyframe on the time-remapping property. Then go back one frame (a shortcut key for this is Page Up). Add a keyframe there then remove the last keyframe.

Make sure you do it in that order or it’ll mess up the time-remapping good.

As far as I can recall this issue never occurred in older versions of AE but appeared sometime around CS4… or maybe that’s just when I started noticing it 🙂

The last frame of a 40 frame composition is frame 39 (since the frames start from 0) but the time-remapping creates the last keyframe with a value of 40.

This behavior only causes problems with compositions as the last frame of a footage item (movie) is simply repeated once the time re-mapping moves beyond it.

To fully fix the loop you’ll also need to copy the first time-remapping keyframe and paste it one frame in front of itself.

Gee, while I’m thinking about this maybe I should file this as a bug 🙂

Darby Edelen

[Phil Rad]

Here’s the sequence (character is blurred on purpose for this example).

38f:

39f:

40f (goes blank):

41f (starts the loop again):

[Phil Rad]

It’s odd that I changed the expression to loopOut(type = "cycle", 0) and it seems as if issue went away???

[Darby Edelen]

That is odd because that expression should evaluate to literally the exact same thing as your original expression 🙂

Darby Edelen