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Old 09-20-2018, 05:58 PM   #1
DaveL
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Default Editing 4K performance

E9 and my CPU performed GREAT with HD footage.
When I started using 4K footage, the performance degrades significantly with 4K footage. Scrubbing is jerky & laggie, it takes awhile to find the stopping point when stopping a scrub, etc. It does seems to handle layers fairly well though.

I wanted to ask the experienced folks, is this performance level with 4K expected with my CPU?
I'm wondering if there are some settings or configurations that I don't have right such that my system can't keep up with 4K very well, or is this pretty normal. Thanks.
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Old 09-20-2018, 06:54 PM   #2
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Dave, it is tough to say for sure, but 4K without the help of graphics acceleration is very taxing on editing systems. When I hear 8k I role my eyes. So at first blush I would say you are running normal but I do not know all of the specifics about your setup or footage type.
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Old 09-20-2018, 07:01 PM   #3
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4K editing can be pretty smooth in EDIUS 9 even with H264 assets provided you have workgroup and set the resolution to half on a less powerful system.

With PCC it can be a bit taxing if you don't have a very recent system which is build and tweaked for Video editing.
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Old 09-20-2018, 07:31 PM   #4
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I edit my 4k footage on a 1080 timeline for smooth playback and change it to 4k when finished and ready for export. All plays well on HD Spark to preview monitor.
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Old 09-20-2018, 07:37 PM   #5
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It is ok on my system unless I have a few filters on the clip, or clip frame rate doesn't match the project frame rate and I have optical flow on.
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Old 09-20-2018, 08:29 PM   #6
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Thanks, helpful information.
My 4K camera is SONY HXR-NX80 shooting XAVC-S QFHD 30p @ 100Mbps.
This footage is pretty challenging for my system.
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Old 09-20-2018, 09:54 PM   #7
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Single track of GH5 UHD 60P 150Mbps plays smoothly on my system in UHD 60P project and 1920x1080 project. Scrubbing is fine too. Multicam with another track of GH5S and one of AX100 HD XAVC-S 50Mbps will only run to my satisfaction at 1/2 preview resolution in EDIUS 8.53 WG . The iGPU does make a difference I think in decoding h264.
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Old 09-21-2018, 07:03 AM   #8
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I suspect your processor does not have Quick Sync.
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Old 09-21-2018, 10:42 AM   #9
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The OPs processor does not have Quick Sync, which would help with H.264 footage. I find I can edit 25P UHD quite well even on a modest system with Quick Sync, but 50P UHD is a lot harder. Logically it would be twice as hard as 25P but it feels worse. If you transcode to GV HQ or HQX it gets better, and performance is different depending on codec.
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Old 09-21-2018, 03:00 PM   #10
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Proxy mode is a big help if you want to go that route. This results in smaller extra files compared to HQX.
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