[Todd Kopriva]

Dave is correct. See the page that Daniel linked to.

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

> I have learned from watching several tutorials that 1920 X 1080 is the ideal dimensions for composition size in after effects.

That doesn’t by itself make sense.

The right size for your composition depends on how you will be using the movie that you’re creating—i.e., what devices and/or software will be used to play the video.

If, for example, you are creating a movie to be played full-frame on a high-definition television, then 1920×1080 makes sense.

See this:
https://helpx.adobe.com/after-effects/using/planning-setup.html

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

3,000? That’s a lot.

There is currently a bug in After Effects that causes various drawing problems for the user interface with you have a couple thousand or more items that need to be displayed in the Timeline panel.

Until we fix this bug, I recommend separating your work into some smaller pieces such that you’re not running into this limit.

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

See how these animated typefaces have been achieved:

https://aescripts.com/after-effects/text/animated-font/

https://animography.net/products/franchise

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

You’ve just hidden the Switches column in that Timeline panel.

https://helpx.adobe.com/after-effects/using/general-user-interface-items.html#columns

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

I recommend posting Premiere Pro questions in the Premiere Pro forum, not this barely-trafficked general forum.

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

from After Effects Help (https://helpx.adobe.com/after-effects/using/modifying-using-views.html#zoom_an_image_for_preview):
“To pan around in the Composition, Layer, or Footage panel while zoomed in, drag with the Hand tool, which you can activate by holding down the spacebar, the H key, or the middle mouse button. Hold Shift, too, to pan faster.”

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

You’ve gotten answers on your duplicate post here:
https://forums.adobe.com/message/6717682

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

I am not aware of any remaining issues with these files in the current versions of After Effects, but the only way that you’ll be able to satisfy yourself for certain is to try the free 30-day trial of the current versions of After Effects and Premiere Pro.

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

Note that the memory leak while scrubbing audio is fixed in the upcoming update:
https://adobe.ly/1pFGGRE

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Todd Kopriva, Adobe Systems Incorporated
After Effects quality engineering
After Effects team blog
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