High CPU load playing youtube video

ardatuna

@Gwen-Dragon VB-75301 and VB-75276

ardatuna

@Gwen-Dragon I use lastest version BigSur 11.1

MumpitzMatze

Hi there, I've got the same problem. MBP 2015 15 16 GB RAM. Running OS Big Sur 11.1 (and also had in OS X Mojave and Catalina) Any video content increases the CPU. See Screenshot.

Best regards from Germany! Bildschirmfoto 2021-01-13 um 13.35.11.png

RosemarieCrenshaw

This post is deleted!

AntraX666

What is most weird about playing any videos in Vivaldi is that on full screen there is no issue, but without maximizing the video CPU load is crazy (Air last 2 hours max of video playing not in full screen and 8 hours with video on full screen). I see this since Catalina (I used Catalina only short time 2 month ago, now on Big Sur) and no update of Vivaldi changed this behavior.

Chas4

Have you installed the recent Big Sur updates? (11.2.3 is the current Big Sur as of this comment)

I know the video codec used and the resolution and playback speed can affect CPU/GPU usage (I remember when Youtube first had 1080 for quality and most computers it caused a CPU spike).

You can right click on a Youtube video and the stats for nerds will list the codec being used for both video and audio.

da1bigkahuna

Interesting because recently I've noticed very high CPU usage too. In my case, it was watch watching a youtube live stream. Maybe it happens with other youtube videos too, but most of those I watch are not all that long (10-30 minutes) while the live stream may last 3 hours or so! My impression was that it tended to get worse over time.

I have a 2018 Mac Mini
3 GHz 6 core intel i5
Big Sur 11.2.3

Using activity monitor, I'll see all 6 cores get pretty high (I do have other apps open, but normally they may be 4 lines or less).

Looking at more detailed Activity monitor cpu usage, I'll see Vivaldi renderer or Vivaldi help going over 70% (at least one of those two). Sometimes over 120%. And the other one will be over 40%. Plus there are more than one item with the same name that is also notably high.

I've had times that everything just responded slowly when these numbers go high. I guess I should do some testing just watching regular videos to see if it happens with those as well as live streams. Oh, I am usually watching the live stream at 1080p. My internet allows for 1 gb download so that shouldn't be a problem.

ardatuna

I reinstall macos lastest version, and vivaldi is lastest version too, but when I open a youtube video fans are going crazy, cpu temp is 95 . I have sent bug reports but nothing changed.
Macos 11.2.3
Vivaldi 3.7.2218.45 (Stable channel) (x86_64)
MacBook Pro 2019

Chas4

@ardatuna Have you tried clearing the browser cache and then restarting Vivaldi, also what resolution of the video?

ardatuna

@Chas4 Yes. Video if video is 720 or higher.

Chas4

@ardatuna Is hardware acceleration turned on?

ardatuna

@Chas4 it changes nothing. result is same for both (on or off).

mbert

After the last update it has got significantly worse for me again. It had got better after I had originally reported this issue, but now my fan keeps working as soon as I have watched youtube videos in Vivaldi for a while.

Chas4

@mbert Any example videos (Youtube video have different audio and video codecs that are used)? Also do note what resolution you are using.

Do you get spinning fans on NASA's live stream? https://www.youtube.com/watch?v=21X5lGlDOfg

mbert

@Chas4 said in High CPU load playing youtube video:

@mbert Any example videos (Youtube video have different audio and video codecs that are used)?

I can't really say, because I notice it when just browsing through some videos .

Also do note what resolution you are using.

My desktop resolution is 3072 × 1920 (MBP 16").
Videos are usually streamed with default resolution (which usually is 360p)

Do you get spinning fans on NASA's live stream? https://www.youtube.com/watch?v=21X5lGlDOfg

After a few minutes, yes.

ardatuna

@Chas4 yes nasa's videos same. (GPU got 95 C degrees)
And resolution is native/default macbook 13 resolution.

Chas4

I meant the resolution of the video being played

ardatuna

@Chas4 usually 720 or higher.

AntraX666

How many tabs do you guys have open when you watch videos? I find out, that new builds (at least for me) have problem with videos in general when I have 100+ tabs open.