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Thomas25297751b3dn
Participating Frequently
July 18, 2022
Question

Background analysis gets stuck

  • July 18, 2022
  • 1 reply
  • 703 views

Aloha all!

Adobe AE 22.5, running on a 2017 iMac Pro w/32 GB RAM, OS 12.4, Radeon Pro Vega 64 16 GB video card.

 

I'm very new to AE, and just want to use it to add a tracked title over a job shot. I've watched several tutorials, and it sure seems like a simple thing to do, but AE is not cooperating. Any effect I add that requires background analysis gets partway through then just freezes. I've let it sit overnight, but it's not just a question of imapatience on my part. Frozen means frozen.

 

Sometimes I can cancel the analyiz, and after several minutes of spinning beach ball, AE becomes respnsive again. If I restart the analysis, it will make it to a different point before freezing. Sometimes it gets so stuck I have to force quit AE.

 

I've restarted the machine, tried using smaller portions of the clip, used different effects. It doesn't seem to be tied to any one effect, or any particular portion of the clip, Background analysis just seems doomed to fail.

 

What can I try? 

Mahalo!

Tom G

This topic has been closed for replies.

1 reply

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Community Expert
Rick GerardCommunity Expert
Community Expert
July 19, 2022

I assume you are talking about camera tracking. Is the footage an MP4? Sometimes that format is problematic. How long is the shot? Do you have any other apps running when you are using After Effects? Have you changed the memory allocation in Preferences? Have you tried tracking in Mocha AE? Mocha will successfully track shots you want to add titles to that cannot be camera tracked. 

 

Here's one thing you might try. Go to Edit/Purge/All memory and disk cache. Make sure that your shot is the only thing in the timeline. Trim the shot to 3 seconds. Pre-compose the shot moving all attributes to the new composition and trimming the new comp to the layer length. You don't need to open the Pre-comp. You should now have a 3 second shot in the timeline. Open the Motion Tracking workspace, select the pre-comp, and select Track Camera.

If that does not work, pick another shot that is not an MP4, trim the shot to 3 or 4 seconds, then try tracking that shot while using the Motion Tracking workspace. If you get a successful track, then the format is the problem.

 

If that does not work, try going to the Creative Cloud app/All Apps page, click on the three dots to the right of the Open button for After Effects, select Other Versions, and roll back After Effects one or more versions.

 

A little more information would help us help you more. 

T
Thomas25297751b3dnAuthor
Participating Frequently
July 19, 2022

Camera tracking, motion tracking, warp stabilizer... if it uses background analysis, it gets stuck.

The clip I want to use is 4k XAVC-I in a .mxf container from a Sony FX6. The total length I want to track is about 40 seconds, but I've tried doing much, much shorter segments. No other apps. The memory allocation leaves 6GB for not-AE. No idea what Mocha is.

I've purged the cache. There is only one shot in the composition. Pre-composing didn't change enything. 

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