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iMovie 10.4.3 out of app memory - Ventura
- Thread starter flang
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iMovie 10.4.3?
The latest iMovie is 10.3.5 released on Oct 24, 2022
https://apps.apple.com/app/imovie/id408981434
The latest iMovie is 10.3.5 released on Oct 24, 2022
https://apps.apple.com/app/imovie/id408981434
TLDR - Large iMovie Library = iMovie sad 
I don't think it's a Ventura issue as iMovie is notorious for consuming large amounts of memory as it loads your movie library. Your original screenshot has iMovie using 55GB of memory. Obviously you don't have 55GB of memory configured so a large majority of this is virtual memory. Smells like a memory leak in iMovie. About all you can do is quit iMovie and try reducing your movie library size or create a new library for each project.
I don't think it's a Ventura issue as iMovie is notorious for consuming large amounts of memory as it loads your movie library. Your original screenshot has iMovie using 55GB of memory. Obviously you don't have 55GB of memory configured so a large majority of this is virtual memory. Smells like a memory leak in iMovie. About all you can do is quit iMovie and try reducing your movie library size or create a new library for each project.