4K video playing problem

cheetz

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hey guys im having trouble playing 4k videos, is it something to do with hardware or software here? im using VLC player

my pc specs are -
CPU: AMD Phenom X 955 Black
GPU: AMD RX580
RAM: 8GB

thanks!
 

xDragon

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hey guys im having trouble playing 4k videos, is it something to do with hardware or software here? im using VLC player

my pc specs are -
CPU: AMD Phenom X 955 Black
GPU: AMD RX580
RAM: 8GB

thanks!

Your CPU's outdated, if you're playing back h265 videos then even worse. 8GB of ram might also not cut it anymore depending on what else you're doing.
 

yusoffb01

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your gpu dont support 4k hevc.

Generally 2016 onwards hardware support decoding 4k using hardware. So u can get 6th gen intel onwards

Cheapest way to get 4k hevc videos to play is to buy a computer with j4105 cpu. If your budget is low, buying J4005 intel NUC cost less than $300 with ram and ssd.

You can also upgrade gpu only, and the cheapest one that supports is gtx 1030.

A value for money option is to get athlon 3000G cpu
 

SkyShroud

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what trouble?
saying trouble doesn't help much
what video are you trying to play?
a mediainfo of the video will be helpful
 

12122012

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https://www.reddit.com/r/Amd/comments/7xttqs/what_is_the_maximum_framerate_rx_470_can_decode/
Roph
R5 3600 / RX580 Nitro3 points ·
2 years ago

Using this sample 120mbps 4K 10bit HEVC and DXVAChecker, it averaged around 85-100fps. This is with a 580, which is the same chip as your 470.

I have LAV Video installed, which is set to use DXVA2 (and thus GPU hardware decoding).
ZoGFUiD.png

If you're using something like VLC, it's probably trying to decode it using your CPU.

Try something like MPC-BE (MPC-HC is abandoned). Install LAV if you haven't already.
FYI i'm using http://www.codecguide.com/download_k-lite_codec_pack_standard.htm to play all my video.
 
Last edited:

cheetz

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what trouble?
saying trouble doesn't help much
what video are you trying to play?
a mediainfo of the video will be helpful

choppy when playing, sometimes can see, most times cant

hmm how to check mediainfo?

i just know its a 4k video
 

cheetz

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hmm talking about upgrade, i'm also thinking between a qhd 144hz monitor vs 4k 60hz

i rarely play fps games, mostly mmo like wow or singleplayer adventure games. and quite often use my pc for watching tv/movies

rarely upgrade also, usually once every long while as perhaps u all can see :s13:

thanks guys
 

xonix

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You could either overhaul whole system or offload to gpu for 4k encoding/decoding.

Search the vlc faq on how to enable gpu acceleration. Your rx580 should be up to the job.
 
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cheetz

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i checked cpuid while running the 4k video - my gpu utilisation did increase to about 10-20% but my cpu utilisation is still 100%

so my cpu bottleneck even with gpu acceleration? or can i still do something thru software?
 

wwenze

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Is it a VP9 video? (Right click in MPC-HC -> Properties) Since your GPU is RX580.

UVD 7
The UVD 7.0 decoder and Video Coding Engine 4.0 encoder are included in the Vega-based GPUs.[24][25] But there is still no fixed function VP9 hardware decoding.[26]
 

cheetz

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Is it a VP9 video? (Right click in MPC-HC -> Properties) Since your GPU is RX580.

ahhh media info as below:
Video: VP90 3840x2160 59.94fps [ (Video 1) [Default] (VP90, 3840x2160, 59.940 fps)]
Audio: AAC 44100Hz 2.0 chn [ (Audio 1) [Default] (AAC, 44.1 kHz, 2.0 chn, 16 bit)]
 

wwenze

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ahhh media info as below:
Video: VP90 3840x2160 59.94fps [ (Video 1) [Default] (VP90, 3840x2160, 59.940 fps)]
Audio: AAC 44100Hz 2.0 chn [ (Audio 1) [Default] (AAC, 44.1 kHz, 2.0 chn, 16 bit)]

There we go, mystery solved.

RX580's VP9 decoding is not full hardware decoding, and your CPU is too slow for it even with GPU acceleration.

Kind of sad considering even my Redmi Note 7 can full hardware 4k60p VP9
 

cheetz

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wa both cpu and gpu cmi? have to overhaul liao :(

if i had to choose 1 to upgrade only then would be cpu first i believe?
 

wwenze

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Just upgrade your CPU, and it should be fast enough to VP9 even with RX580
 
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