Why YouTube only uses CPU?

[PlayModeOn]

Hello,

 

I was watching 4K videos @ 60FPS at YouTube to see how my computer will react to it. I do have a secondary monitor to observe hardware usage.

One thing I notice is that while watching these 4K videos on Chrome and Firefox is that YouTube only uses CPU not my GPU. Is this normal? Some people also report this too.

http://forums.cnet.com/7723-12542_102-619280/how-to-turn-on-gpu-hw-assist-for-youtube-on-chrome/#message5579866

 

CPU usage is 99% while GPU usage is 0-10%, not doing anything. I am not famillar how hardware runs videos but Is this because GPU don't decode videos?

Because it seems a waste if the GPU is not doing anything. I did enable hardware acceleration on Chrome and Firefox. My PC spec is in my signature.

 

FX-8350, R9 290.

 

EDIT: I tested Internet Explorer and it uses 50-80% CPU usage but very little GPU usage (<10%).

EDIT 2: To remind again, I enabled hardware acceleration for all three browsers, I also tried turning it off which just makes it more choppy.

 

4K runs a bit choppy but fine otherwise.

I am using this video for reference.

[Tim Drake]

Are you running it full screen?

 

It barely uses my GPU while windowed but full screen it jumps from like 10% to like 30%

[minibois]

Maybe you have to enable or disable something in chrome://flags ?

Not sure what though..

[PlayModeOn]

Are you running it full screen?

 

It barely uses my GPU while windowed but full screen it jumps from like 10% to like 30%

Well yes my GPU sometimes jumps to 50% but only for a second before going down to 10% or 0%, but I don't think YouTube is doing that, maybe it is just reacting to my mouse cursor and the hardware monitor on the second monitor. Yes I tried fullscreen and non-fullscreen.

[PlayModeOn]

Maybe you have to enable or disable something in chrome://flags ?

Not sure what though..

Does YouTube use your GPU in your case? I think these browsers don't use GPU.

[minibois]

Does YouTube use your GPU in your case? I think these browsers don't use GPU.

Not sure.

Try enabling or disabling "Disable hardware-accelerated video decode." heard that sometimes has good effects..

I'm at school at the moment, so don't have the ability to test if it does or does not use the GPU.

[Tim Drake]

Does YouTube use your GPU in your case? I think these browsers don't use GPU.

They definetely do, my friend 7950 wasn't downclocking with hardware accleration on and was staying at 57c and when I turned it off it now idles at 45C..

[Rohith_Kumar_Sp]

Hello,

 

I was watching 4K videos @ 60FPS at YouTube to see how my computer will react to it. I do have a secondary monitor to observe hardware usage.

One thing I notice is that while watching these 4K videos on Chrome and Firefox is that YouTube only uses CPU not my GPU. Is this normal? Some people also report this too.

http://forums.cnet.com/7723-12542_102-619280/how-to-turn-on-gpu-hw-assist-for-youtube-on-chrome/#message5579866

 

CPU usage is 99% while GPU usage is 0-10%, not doing anything. I am not famillar how hardware runs videos but Is this because GPU don't decode videos?

Because it seems a waste if the GPU is not doing anything. I did enable hardware acceleration on Chrome and Firefox. My PC spec is in my signature.

 

FX-8350, R9 290.

 

EDIT: I tested Internet Explorer and it uses 50-80% CPU usage but very little GPU usage (<10%).

EDIT 2: To remind again, I enabled hardware acceleration for all three browsers, I also tried turning it off which just makes it more choppy.

 

4K runs a bit choppy but fine otherwise.

I am using this video for reference.

 

 

Are you running it full screen?

 

It barely uses my GPU while windowed but full screen it jumps from like 10% to like 30%

 

 

Maybe you have to enable or disable something in chrome://flags ?

Not sure what though..

well idk why, but it never uses my GPU at all,  buit does use a little bit of CPU, it only used 8% of my CPU at full screen 4K

[PlayModeOn]

-snip-

Maybe it is using the built-in Intel graphic processor that's why your CPU and discrete GPU usage is low?

I am using AMD which has no integrated graphics which means it should be running on my GPU.

[Dzzope]

Maybe it is using the built-in Intel graphic processor that's why your CPU and discrete GPU usage is low?

I am using AMD which has no integrated graphics which means it should be running on my GPU.

he has an AMD FX-8350, R9 290

[PlayModeOn]

 

The vídeo is encoded in x264 and because of hardware optimizations requires very little effort to decode and display.

If it requires very little effort to decode and display why is it choppy?

[Rohith_Kumar_Sp]

Maybe it is using the built-in Intel graphic processor that's why your CPU and discrete GPU usage is low?

I am using AMD which has no integrated graphics which means it should be running on my GPU.

but i have a dedicated GPU, in the bios i have turned off in built GPU when dedicated GPU is detected, i don't think it uses both at the same time, unless i'm wrong  

[PlayModeOn]

he has an AMD FX-8350, R9 290

No he has an i7 4790K. I am the one with the FX-8350 and R9 290.

[Rohith_Kumar_Sp]

No he has an i7 4790K. I am the one with the FX-8350 and R9 290.

try downloading the video and give it a playback.

[Dzzope]

No he has an i7 4790K. I am the one with the FX-8350 and R9 290.

Ahh.. teach me to pick up on other people without double checking myself.. doh.

[PlayModeOn]

try downloading the video and give it a playback.

4K video will take a long time to download

 

But I do have videos of 1080p trailers running on VLC player at fullscreen. The CPU usage at idle is 20%, while watching these trailers on VLC it goes to 35% but GPU usage is still very low (<10%), but the videos are silky smooth.

 

When I play games such as BF4, Witcher 2, CSGO, etc GPU usage is 99% at 60+FPS, 1080p which is normal, for some reason videos don't utilise my GPU, only the CPU.

 

Don't get me wrong, YouTube and videos runs fine with no problems at all, I just find this behaviour where it only uses CPU odd.

 

 

Ahh.. teach me to pick up on other people without double checking myself.. doh.

lol, no worries.

[TieBomber232]

If you use Chrome, you can force enable GPU rastering. I assume this would fix the problem? chrome://flags to enable

[Rohith_Kumar_Sp]

4K video will take a long time to download

no kidding, its like 579 mb

[PlayModeOn]

If you use Chrome, you can force enable GPU rastering. I assume this would fix the problem? chrome://flags to enable

Unfortunately I tried to force enable GPU rastering and it doesn't make a difference

CPU is working hard while GPU is sleeping away. Its not just YouTube and web browsers as I found out, also VLC and media players.

 

They are not running bad, in fact videos are running silky smooth, but I don't know why it is only using the CPU.

[Rohith_Kumar_Sp]

Maybe it is using the built-in Intel graphic processor that's why your CPU and discrete GPU usage is low?

I am using AMD which has no integrated graphics which means it should be running on my GPU.

i'm pretty sure GPU has nothing to do with it, my GPU only kicks in when i download it and playback, 

it can be any reason for your choppiness, you need to reinstall a fresh OS and open the video to be sure in fact, for now try uninstalling chrome and do a fresh install and update flash

[Rohith_Kumar_Sp]

Unfortunately I tried to force enable GPU rastering and it doesn't make a difference

CPU is working hard while GPU is sleeping away. Its not just YouTube and web browsers as I found out, also VLC and media players.

 

They are not running bad, in fact videos are running silky smooth, but I don't know why it is only using the CPU.

have you considered the fact, may be its stuttering because of the internet speeds? youtube does that 

[PlayModeOn]

have you considered the fact, may be its stuttering because of the internet speeds? youtube does that 

Yes but I let it load to 30% before I start playing. But like I said the 1080p trailers in my HDD also only uses CPU too.

 

Also I will go for a bit and come back tomorrow. It's late night here in Australia.

[-iSynthesis]

Hello,

 

I was watching 4K videos @ 60FPS at YouTube to see how my computer will react to it. I do have a secondary monitor to observe hardware usage.

One thing I notice is that while watching these 4K videos on Chrome and Firefox is that YouTube only uses CPU not my GPU. Is this normal? Some people also report this too.

http://forums.cnet.com/7723-12542_102-619280/how-to-turn-on-gpu-hw-assist-for-youtube-on-chrome/#message5579866

 

CPU usage is 99% while GPU usage is 0-10%, not doing anything. I am not famillar how hardware runs videos but Is this because GPU don't decode videos?

Because it seems a waste if the GPU is not doing anything. I did enable hardware acceleration on Chrome and Firefox. My PC spec is in my signature.

 

FX-8350, R9 290.

 

EDIT: I tested Internet Explorer and it uses 50-80% CPU usage but very little GPU usage (<10%).

EDIT 2: To remind again, I enabled hardware acceleration for all three browsers, I also tried turning it off which just makes it more choppy.

 

4K runs a bit choppy but fine otherwise.

I am using this video for reference.

You're doing something wrong if your cpu usage is at 100% in chrome dude... At 1080p im at 0.8% right now lol.

Watching that 4k movie it did go to 30%, maybe it managing network traffic? Dont know

[Bensemus]

Don't know why but playing the linked vid bumps my cpu up to about 30% usage and my gpus up to about 35% usage. I paused the vid and they all went back to 1% so the gpus were being used to play the video which wasn't full screen.

[ExcitezR]