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ProRes HQ Playback – Is It Supposed to Be This Much of a Hog?
Posted by Sean Oneil on June 23, 2007 at 4:39 amI went out an got a brand new Quad 2.66 Mac Pro with a Kona 3 just so I can use ProRes in HD for a concert project we just started.
I’m getting 200% CPU activity when I playback 1080i60 ProResHQ in Final Cut 6. If I so much as check my email when laying back to tape, I’m liable to get dropped frames.
Can this be right!?!? Does it really consumer that much or is there something wrong with my system?
Sean
Sean Oneil replied 18 years, 10 months ago 6 Members · 10 Replies -
10 Replies
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Simon Blackledge
June 23, 2007 at 7:10 amLiable? or do you ? have you tried? 200% of an 8core isn’t that like really just 2cores at 100%?
See what happens if you havent already, though I never touch a mac once its laying off.
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Walter Biscardi
June 23, 2007 at 11:07 am[Sean ONeil] “If I so much as check my email when laying back to tape, I’m liable to get dropped frames.”
Why would you do this? It’s an editing workstation, why would you use it for ANYTHING else when laying back to tape?
That’s why we have iMacs, Mac Minis and Laptops in our shop. You surf the internet and check email with those. Never with the main systems.
Walter Biscardi, Jr.
https://www.biscardicreative.com
HD Editorial & Animation for Broadcast and independent productions.All Things Apple Podcast! https://cowcast.creativecow.net/all_things_apple/index.html
Read my blog! https://blogs.creativecow.net/WalterBiscardi
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Walter Biscardi
June 23, 2007 at 12:45 pm[Sean ONeil] ”
Can this be right!?!? Does it really consumer that much or is there something wrong with my system?”Yes, this is the reason why the Mac Pro is listed as a requirement for ProRes Capture. The CPU is doing all the work for capture / playback.
Walter Biscardi, Jr.
https://www.biscardicreative.com
HD Editorial & Animation for Broadcast and independent productions.All Things Apple Podcast! https://cowcast.creativecow.net/all_things_apple/index.html
Read my blog! https://blogs.creativecow.net/WalterBiscardi
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Gary Adcock
June 23, 2007 at 1:01 pm[Sean ONeil] “I’m getting 200% CPU activity when I playback 1080i60 ProResHQ in Final Cut 6. If I so much as check my email when laying back to tape, I’m liable to get dropped frames.”
Band new machine.
how much ram? needs to be more than 2 gigs
what drives, if you are doing this from an internal alone– shame on you….
gary adcock
Studio37
HD & Film Consultation
Post and Production Workflows -
Shane Ross
June 23, 2007 at 5:44 pm[walter biscardi] “Why would you do this? It’s an editing workstation, why would you use it for ANYTHING else when laying back to tape?”
I’m with Walter. When laying back to tape you don’t do ANYTHING but watch the layback. I’ve NEVER done anything else on a machine as it was capturing or laying back.
And yes…watch the layback. If there are any errors you’ll see them. It might be the 5th time you’ve laid back today, for one reason or another, but you have to watch it.
Shane

Littlefrog Post
http://www.lfhd.net -
Sean Oneil
June 23, 2007 at 6:55 pm[gary adcock] “how much ram? needs to be more than 2 gigs”
4 gigs.
[gary adcock] “what drives, if you are doing this from an internal alone– shame on you….”
Who do you think I am? Please.
Sean
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Sean Oneil
June 23, 2007 at 7:43 pm[walter biscardi] “Why would you do this? It’s an editing workstation, why would you use it for ANYTHING else when laying back to tape?”
We’ll agree to disagree. I’ve been doing this a very long time. And I haven’t had to worry about that kind of thing since Media 100 v6.
Launching Mail or Safari are nothing compared to things like SAN activity, Software RAID, etc. Not to mention all the other stuff Tiger does in the background. You want a lot of CPU overhead on your workstation, regardless of how diligent you are about not multitasking.
That’s why I’m perturbed about ProRes decoding taking four Xeon Woodcrest cores to more than half capacity. I don’t think H264 would even do that. ProRes is clearly not optimized whatsoever.
Sean
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Gary Adcock
June 23, 2007 at 7:47 pm[Sean ONeil] “[gary adcock] “what drives, if you are doing this from an internal alone– shame on you….” Who do you think I am? Please.”
Was trying to be funny
what cards are in your computer and how do you have the slots configured via the Slot utility?
gary adcock
Studio37
HD & Film Consultation
Post and Production Workflows -
John Heagy
June 25, 2007 at 3:09 pmGiven that ProRes capture is not supported on G5s, even with their superior vector processing, and that head to head comparisions of Quad G5s and Quad Intels are pretty equal, it’s not surprising ProRes(HQ) would tax a Quad Intel. Not much overhead for multiple realtime playback. Anybody wanting to do 1080 ProRes(HQ) would be wise to pony up for the eightcore.
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Sean Oneil
June 25, 2007 at 6:39 pmI take things too seriously. I know.
Kona 3 is in slot 3, configured for 4-lane.
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