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how fast is export (cmd E) in a 2012 iMac i7?

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Clermond Ferrand
how fast is export (cmd E) in a 2012 iMac i7?
on Aug 21, 2013 at 2:19:06 pm

I was editing some 4min videos with about 25 Clips in 3 layers,
some lower 3rds, 20 audio files ins 2 layers. Various effects
as NeatVideo, audio expander and some color corrections.

I am running a quite new iMac 27" i7, GTX 680 2 GB,
20 GB RAM, 3 TB Fusion HD.
All files are native ProRes from a Atomos recorder,
so no optimized media and no import to events.

I was a little shocked because it took 30mins for this export.
Project was not rendered and background rendering is off.
I did not see a benefit exporting from a rendered project,
far from it it takes a lot of time additionally to render the
project. My deadline is quite close so I dont have much time
for additional time consuming test in the next 2 days.

That shoudn't be normal? Any idea where the hook is?
Thanks for your time and your help


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Jeremy Garchow
Re: how fast is export (cmd E) in a 2012 iMac i7?
on Aug 21, 2013 at 2:46:44 pm

Neat Video.

Try removing that and see what happens.


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Clermond Ferrand
Re: how fast is export (cmd E) in a 2012 iMac i7?
on Aug 21, 2013 at 5:38:04 pm

you were right, I never would have believed that.
Has NV the same issue on other NLE as Premiere or FCP 7?

here's my test:

Project 4:05, about 80% of the clips denoised, 3:20 in total

NV applied and non rendered: 30min
NV applied and rendered: 22min

project dupicated, deleted all NV effects
non rendered: 3:13
rendered: 1:22

outch.

Thanks for this hint!


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Jeremy Garchow
Re: how fast is export (cmd E) in a 2012 iMac i7?
on Aug 21, 2013 at 6:06:30 pm

Denoising, especially good denoising, is usually processor heavy.

Neat does its best to have GPU assisted processing, but it still takes a while.

Jeremy


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Marco Feil
Re: how fast is export (cmd E) in a 2012 iMac i7?
on Aug 21, 2013 at 9:56:47 pm

Did you check the performance settings in Neat Video? I think the default is to use CPU only, but I think a combination of CPU+GPU should run somewhat faster on your machine. Go to preferences, performance and run the optimization.
From the manual:
Optimize
Use the Optimize... button to open a specialized dialog designed to measure image processing speeds achieved with different combinations of the CPU and GPU settings. It allows to automatically benchmark all possible combinations of settings and to identify the best combination. This is the easiest way to optimize the performance of Neat Video for specific CPU and GPU hardware.


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Clermond Ferrand
Re: how fast is export (cmd E) in a 2012 iMac i7?
on Aug 21, 2013 at 10:05:21 pm

Thanks, Marco!


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Bret Williams
Re: how fast is export (cmd E) in a 2012 iMac i7?
on Aug 22, 2013 at 1:57:43 am

When I've used neat video I the past, it's been a pre process. IOW we run it on the raw footage or shots we need on another computer or overnight, and export as new clips to be used in the edit, or to replace clips that needed it. Or, just turn the effect off during the edit, and bite the bullet on the final export. But since that final export is often down to the wire with someone breathing down your neck, I'd prefer the former.


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