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Around 18-20 fps playback. What do i need to upgrade?

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Rick Duteweert
Around 18-20 fps playback. What do i need to upgrade?
on Nov 21, 2016 at 2:47:00 pm

Hi all!

Recently i bought a Sony a7S II. When in edit some simple clips in XAVC S 4K my computer struggles with the playback, especially when i put a lut on it. Here are my computer specs:

Windows 10 Pro
32GB Ram
GeForce GTX 770
SSD 840 Samsung Evo 256GB: Scratch Disk
SSD 840 Samsung Evo 128GB: Windows and software
2x 1tb hdd wd in Raid 1 for projects en media footage

What do i need to upgrade? I was thinking to change de raid 1 for ssd or upgrade the videocard?

What do you guys think? Are there more people editing with the XAVC S 4K footage and what hardware do you use?

Thanks!


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Chris Borjis
Re: Around 18-20 fps playback. What do i need to upgrade?
on Nov 21, 2016 at 5:18:18 pm

I have a similar setup but mac based. video storage is raid 5.

I get choppy playback after adding any lumetri effect (including just a lut) in 1080P (with a 4k source)
but rendering it makes it play smoothly.

On 4k XAVC footage in a 4k sequence though, I only get smooth playback when lowering the resolution in the program monitor.

The articles I've read on achieving smooth 4k playback sequences seem to have been accomplished with
an SSD raid storage solution.



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Rick Duteweert
Re: Around 18-20 fps playback. What do i need to upgrade?
on Nov 21, 2016 at 9:30:42 pm
Last Edited By Rick Duteweert on Nov 21, 2016 at 9:35:42 pm

Thanks for your reaction! More people with the same hardware and specs?


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Vince Becquiot
Re: Around 18-20 fps playback. What do i need to upgrade?
on Nov 21, 2016 at 9:43:01 pm

Hi Rick,

Your best bet is to check your task manager to see where the bottleneck is.

It is likely is the CPU, but it could also be the GFX card. If you only have one or 2 clips on the timeline, I doubt the SSDs aren't keeping up.

The latest version of Premiere also allows you to easily transcode for proxy editing, so I would try that first.

Vince Becquiot

Indigo Live | Kaptis Media

San Francisco Bay Area


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Chris Borjis
Re: Around 18-20 fps playback. What do i need to upgrade?
on Nov 21, 2016 at 11:21:47 pm
Last Edited By Chris Borjis on Nov 21, 2016 at 11:24:13 pm

Rick what is the data transfer rate of your Raid 1 setup?

And if anyone out there reading this has, in fact been able to play XAVC (or RED) 4k footage in a 4k sequence
with full resolution enabled, with perfect smooth playback (rendered or not), I'd like to hear your specs as well.

I get by just fine playing/editing at lower resolution playback and my clients don't care and understand
it's bleeding edge tech. 9 times out of 10 it's a 1080p deliverable in the end.



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Rick Duteweert
Re: Around 18-20 fps playback. What do i need to upgrade?
on Nov 22, 2016 at 10:58:55 am
Last Edited By Rick Duteweert on Nov 22, 2016 at 11:01:56 am

Yes, now i put the resolution at 1/4 or even 1/8 to view the video's. Run a hdd test tool: Read 79,3 mb/s Write 103,8 mb/s.

I've watch the stats in the task manager. CPU gets around 80% at max and average about 65% when playing back my timeline at full resolution, so thats fine i think. The strange thing is that it says my raid 1 uses online about 25 a 40% of it's capicity. I don't understand that part...

Thanks for all the feedback so far!

Sony A7S II | Canon 24-70 2.8 | Canon 70-200 2.8


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Chris Borjis
Re: Around 18-20 fps playback. What do i need to upgrade?
on Nov 23, 2016 at 12:21:11 am

I get a speed of:

320 write

421 read



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Kannan Raghavan
Re: Around 18-20 fps playback. What do i need to upgrade?
on Nov 23, 2016 at 7:40:18 am

Those are below average read n write numbers. How is your RAID connected to your computer? Best would be thunderbolt. Or miniSAS.USB 3 is ok.

Kannan Raghavan
The Big Toad Films Pte. Ltd.


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Tero Ahlfors
Re: Around 18-20 fps playback. What do i need to upgrade?
on Nov 23, 2016 at 7:08:56 am

You could try to transcode your footage to DNxHR.


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Rick Duteweert
Re: Around 18-20 fps playback. What do i need to upgrade?
on Nov 23, 2016 at 11:34:48 am

I use the raid controller from the motherboard....

Sony A7S II | Canon 24-70 2.8 | Canon 70-200 2.8


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