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FCPX Idle CPU While Rendering, Export

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Dan Edwards
FCPX Idle CPU While Rendering, Export
on Mar 3, 2014 at 4:32:27 pm

Hello all,

I'm battling an issue with exporting or even just rendering my FCPX timeline. Activity Monitor shows me using a measly 30-40% of my CPU power for the export. Sending to Compressor uses ~165%, but that's still leaving about 60% of my CPU idle. A 4 minute export is taking upwards of 2 to 3 hours. Restarting, trashing preference files and dragging source media to internal disk space have all proven fruitless.

Here are my computer and project specs:

27" iMac (mid-2011)
3.4GHz
16GB RAM
AMD Radeon HD 6970M 2GB VRAM
10.9.1

4 minute, 1080p timeline, DSLR and JPG photos


Thanks in advance :)


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Jeremy Garchow
Re: FCPX Idle CPU While Rendering, Export
on Mar 4, 2014 at 5:01:02 am

Any filters, effects, or templates?


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Bret Williams
Re: FCPX Idle CPU While Rendering, Export
on Mar 5, 2014 at 2:25:53 am

Is it using the GPU?


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Dan Edwards
Re: FCPX Idle CPU While Rendering, Export
on Mar 5, 2014 at 2:48:39 am

I'm using Magic Bullet Looks for some light grades, but I tried duplicating the project and removing all effects, and still had the same issue.

I was unable to monitor my GPU usage, but I've downloaded a utility and hope to test it.

Exporting a separate project on different machine utilizes 700-800% of my CPU usage, so I'm doubting it relies solely on the GPU for encoding (as I've read on other forums/threads).

Am I wrong if I identify the issue as FCPX not properly hyperthreading?


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