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4K UHD - 60Hz Problem

swissguy
By swissguy
in Displays
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Go to solution Solved by swissguy,

I can't really say, check the usage of your GPU, CPU, memory, to see which is having very high usage when playing high bit rate video.   Keep in mind that even a high quality Bluray video has only about 50Mbps bit rate, which is already pretty high for a video.

 

I have a i7-4790K, dual Titan X, 32GB, RAID 0 SSD editing workstation and even that has trouble with previewing on a player like VLC the very high bit rate footage from my video camera.  But I can watch 50Mbps footage without problem.

 

 

Problem solved:

Now I can play videos with bitrates as high as 112Mbit/s (don't have any higher available to test), and also 60fps looks very smooth! I'm very happy :D

 

Solution:

VLC didn't work for whatever reason.

MPC-HC Player works flawless after activating "UHD (4K)" Hardware Acceleration on the "DXVA2 (native)" decoder.

Posted

Hi everyone,

 

Situation:

I upgraded to a 4K Monitor (Philips BDM4065UC - 4K @ 60Hz over DisplayPort 1.2).

Also upgraded the graphics card to an ASUS GTX 960 2GB (supports 4K @ 60Hz over DisplayPort 1.2).

 

Problem:

4K Video, especially 60fps, doesn't work like it should. It stutters and even the sound stutters. :(

Even with my old graphics card (Radeon HD 5700) it worked better, @30Hz tough.

 

Info:

I'm using the DisplayPort cable that came with the Monitor.

 

System:

Windows 7 64-bit SP1
Intel Core i5 750 @ 2.67GHz
12.0GB Dual DDR3 @ 668MHz (9-9-9-24)
ASUS P7P55D LE (LGA1156)
ASUS STRIX GTX 960 2GB OC
SSD Crucial BX100

 

Any idea? Why? How to solve?

 

Thanks for any suggestion!

 

cheers,
swissguy

 

Diclaimer:
No... I don't want to game with this setup

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When you say 4K 60fps video, what exactly do you mean, are you trying to watch a movie that plays in 4K 60fps (4K 60p) or are you talking about a screen recording you did in 4K 60fps?

Guide: DSLR or Video camera?, Guide: Film/Photo makers' useful resources, Guide: Lenses, a quick primer

Nikon D4, Nikon D800E, Fuji X-E2, Canon G16, Gopro Hero 3+, iPhone 5s. Hasselblad 500C/M, Sony PXW-FS7

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When you say 4K 60fps video, what exactly do you mean, are you trying to watch a movie that plays in 4K 60fps (4K 60p) or are you talking about a screen recording you did in 4K 60fps?

I mean: watching videos in 4K which have 60fps. (But even 4k videos with 30fps don't play as smooth as they should)

Samples:

http://demo-uhd3d.com/fiche.php?cat=uhd&id=104

http://demo-uhd3d.com/fiche.php?cat=uhd&id=121

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Is the display actually set to 60Hz? Many 4K monitors have a DisplayPort revision setting which is set to DisplayPort 1.1 by default for compatibility reasons. You may have to go into the monitor settings and enable DisplayPort 1.2 mode manually to get 60Hz, and make sure it is set to 60Hz in the operating system.

Forum Rules   |   Guide to Display Cables / Adapters

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Is the display actually set to 60Hz? Many 4K monitors have a DisplayPort revision setting which is set to DisplayPort 1.1 by default for compatibility reasons. You may have to go into the monitor settings and enable DisplayPort 1.2 mode manually to get 60Hz, and make sure it is set to 60Hz in the operating system.

 

Yes the monitor was manually set to DisplayPort 1.2.

The "normal" stuff works perfectly fine at 60Hz.

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EDIT 2:

4K 60fps videos with lower bitrate play just fine... :/

The stutter only occurs in Videos with high bitrate.

 

Yes because your computer has a bit of trouble keeping up with delivering the content from the high bitrate videos.  That's your main issue, not an issue with Display Port.

Guide: DSLR or Video camera?, Guide: Film/Photo makers' useful resources, Guide: Lenses, a quick primer

Nikon D4, Nikon D800E, Fuji X-E2, Canon G16, Gopro Hero 3+, iPhone 5s. Hasselblad 500C/M, Sony PXW-FS7

ICT Consultant, Photographer, Video producer, Scuba diver and underwater explorer, Nature & humanitarian documentary producer

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Posted

What component exactly do you think is the bottleneck

 

I can't really say, check the usage of your GPU, CPU, memory, to see which is having very high usage when playing high bit rate video.   Keep in mind that even a high quality Bluray video has only about 50Mbps bit rate, which is already pretty high for a video.

 

I have a i7-4790K, dual Titan X, 32GB, RAID 0 SSD editing workstation and even that has trouble with previewing on a player like VLC the very high bit rate footage from my video camera.  But I can watch 50Mbps footage without problem.

Guide: DSLR or Video camera?, Guide: Film/Photo makers' useful resources, Guide: Lenses, a quick primer

Nikon D4, Nikon D800E, Fuji X-E2, Canon G16, Gopro Hero 3+, iPhone 5s. Hasselblad 500C/M, Sony PXW-FS7

ICT Consultant, Photographer, Video producer, Scuba diver and underwater explorer, Nature & humanitarian documentary producer

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  • Solution

I can't really say, check the usage of your GPU, CPU, memory, to see which is having very high usage when playing high bit rate video.   Keep in mind that even a high quality Bluray video has only about 50Mbps bit rate, which is already pretty high for a video.

 

I have a i7-4790K, dual Titan X, 32GB, RAID 0 SSD editing workstation and even that has trouble with previewing on a player like VLC the very high bit rate footage from my video camera.  But I can watch 50Mbps footage without problem.

 

 

Problem solved:

Now I can play videos with bitrates as high as 112Mbit/s (don't have any higher available to test), and also 60fps looks very smooth! I'm very happy :D

 

Solution:

VLC didn't work for whatever reason.

MPC-HC Player works flawless after activating "UHD (4K)" Hardware Acceleration on the "DXVA2 (native)" decoder.

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Posted

Problem solved:

Now I can play videos with bitrates as high as 112Mbit/s (don't have any higher available to test), and also 60fps looks very smooth! I'm very happy :D

 

Solution:

VLC didn't work for whatever reason.

MPC-HC Player works flawless after activating "UHD (4K)" Hardware Acceleration on the "DXVA2 (native)" decoder.

 

You need to enable hardware acceleration on VLC 

There are 10 types of people in the world: those who understand binary numbers and those who don’t

bulgara, oh nono

Multipass

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