Creating loop using expressions.

[marjimsha]

Greetings  Adobe AFX community! I am trying to create a simple loop using the expression LoopOut(type="cycle", numKeyframes=0).  I have referenced several sources for solution, but cannot seem to figure out why one is working, and one is not. Maybe someone can shed light on this for me??  Thank you in advance. 

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I have a main comp with two precomps, both with looping sets of images. The paper loop came out fine, but the second (precomp titled, "bambi") even though I followed the same steps, plays the 5 images through, but NO loop. The steps I took are as follows:
-In precomp containing images to be looped, trim to 1 second each,
-sequence keyframe asst to sequence layers,
-trimmed comp to work area,
-Placed precomp in main comp.

-Rt clicked precomp to enable time remapping
-Alt+rt clicked stopwatch to bring up script
-Applied LoopOut(type="cycle",numKeyframes=0) command.  

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AFX version 17.7.0

Windows 10
HP Laptop Envy 17”
Processor Intel 1.80 GHz
Installed RAM – 12.0
64 bit

[Jose Panadero]

Could you share a screen capture with your precomps open so we can check if the problem resides inside these precomps'

Thanks

[marjimsha]

Hello Joe!  Your question caused me to revisit sketch precomp, and I see that I DID NOT trim comp to work area like I'd thought.  Strange, I really did double check that.  Anyway, after doing so, it loops just fine.  Thank you!!

[Mathias Moehl · Accepted solution]

Good that you found the issue already! If you look for a loop with some more options (like a way to make the loop seamless even if the animation is not), my Loop iExpression is also a good alternative.
https://mamoworld.com/after-effects-expression/loop

[marjimsha]

Thank you for the link!  

[Rick Gerard · Accepted solution]

For loops to be seamless the first and last frame should be identical. To loop time remapping you have to go to the last time remapping keyframe which is at the end of the layer after the last frame has played back, move back one frame, set a new keyframe, then move forward and delete the last keyframe. Now the first and the last keyframe will show an image. Only then will loopOut() work for time remapping without giving you a repeated empty frame.

[marjimsha]

Thank you