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Old 08-08-2019, 06:40 PM   #1
chatziin
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Default Playback issues

Hi,
I have edius 8 student edition and a computer with the specs:I9 9900k,32GB RAM DDR4 and a NVIDIA GTX 970 4GB gpu.
When i record in 1080p 100fps and 4K 25fps my program has difficulties running the video flawlessly. For the first seconds it runs excellent but later it starts going slow,having really few fps on the playback. Whenever i add on some effects and some colour corrections,things get even worse. When it starts going slow,i render the video and the problem is fixed but not for long,after a while it starts going slow again.

I do this as a hobby so if possible any help i recieve to be more instructive and easy for me (both hardware and software side).

Thanks in advance.
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Old 08-08-2019, 09:15 PM   #2
BernH
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Quote:
Originally Posted by chatziin View Post
Hi,
I have edius 8 student edition and a computer with the specs:I9 9900k,32GB RAM DDR4 and a NVIDIA GTX 970 4GB gpu.
When i record in 1080p 100fps and 4K 25fps my program has difficulties running the video flawlessly. For the first seconds it runs excellent but later it starts going slow,having really few fps on the playback. Whenever i add on some effects and some colour corrections,things get even worse. When it starts going slow,i render the video and the problem is fixed but not for long,after a while it starts going slow again.

I do this as a hobby so if possible any help i recieve to be more instructive and easy for me (both hardware and software side).

Thanks in advance.
4K is difficult for a computer to play back, and the problem could be several issues. Often with a fast system, you still can't apply a lot of effects or play multiple layers before having to render.

Are you using dedicated hard drives for your video files? (not the C: drive)
If you are, what type and connection?

Your CPU has an INTEL GPU core built in. This can be used for QuickSync Hardware assisted decode in Edius. Depending on your Windows version and hardware configuration, this may require having a monitor hooked up to the built in intel GPU and the correct driver loaded from your motherboard manufacturer. It also requires that the hardware decode be enabled in the Edius settings for that file type.

The other two things that may help are:

1) edit in proxy mode, and turn proxy mode off before exporting. This essentially makes a lower quality HD file to edit with.

2) convert source files to HQX before editing. HQX is a lot less compressed than most camera 4K files so requires less CPU power to process, but because the files are less compressed, they are larger and require faster hard drives to play back.

My post #10 in this thread outlines these two processes. https://forum.grassvalley.com/forum/...ad.php?t=41266
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Last edited by BernH; 08-09-2019 at 12:59 AM.
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Old 08-08-2019, 10:47 PM   #3
Liverpool TV
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Quote:
Originally Posted by chatziin View Post
Hi,
I have edius 8 student edition and a computer with the specs:I9 9900k,32GB RAM DDR4 and a NVIDIA GTX 970 4GB gpu.
When i record in 1080p 100fps and 4K 25fps my program has difficulties running the video flawlessly. For the first seconds it runs excellent but later it starts going slow,having really few fps on the playback. Whenever i add on some effects and some colour corrections,things get even worse. When it starts going slow,i render the video and the problem is fixed but not for long,after a while it starts going slow again.

I do this as a hobby so if possible any help i recieve to be more instructive and easy for me (both hardware and software side).

Thanks in advance.
Hi Nikolaos.

Iíd look first at Bernís suggestion of Quicksync being active. If you go to export and see if youíre given the option of hardware accelerated encoding for H.264, this is usually an indicator of if Quicksync is active. There are a number of threads on the forum that cover this option in detail if you get stuck.

I only suggest this as your first thing to check as it does sound like this may be the issue. I use the same CPU and am able to get real time 4K 60FPS but canít if the Intel iGPU/Quicksync setup isnít correct.

This obviously assumes that you are using H.264 source footage.

If this doesnít help, then Iíd follow Bernís other suggestions.

Cheers,
Dave.
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Old 08-08-2019, 11:08 PM   #4
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The 9900k should be able to smoke a UHD 25p file with effects.

I'm running a 5 year old overclocked 4790k with Edius Workgroup 9.4. The video shows that I'm in 10bit 3840x2160 25p. I'm also running my resolution drop down at 1/2.

Each clip has a filter and an in and out transition.

Take note of the buffer during playback.
3840X2160 25p 10BIT.mp4

If you are not running Workgroup, start a 3840x2160 25p project within Edius.
Load all of your files. Now, change the frame size to 1920x1080. If you now get real time playback, do all of your work and when finished, change the frame size back to 3840x2160.
Now export your project.

If your playback doesn't improve after dropping to 1920x1080, there are a few settings in the bios and within Edius that probably need to be adjusted.
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