If i limit cpu max frequency video playing is starting to stutter

peter7089 · 04-29-2023, 02:37 AM

I am watching joe rogan podcast in firefox but then my cpu is running on max frequency which causes high cpu temperature and noisy fan which makes the experience not very pleasant. I am using cpupower to limit the max cpu frequency which reduce fan noise but after while the video starts stuttering. Why reducing cpu max frequency cause video stuttering?

I am limiting cpu frequency like this: sudo cpupower frequency-set --max 2000mhz. My cpu frequency range is 800mhz-3400mhz.

teckk · 04-29-2023, 07:32 AM

That depends. Are you using hardware acceleration. Or is firefox. That shifts some of the video chip load off onto the processor. If you slow down the cpu then it may not be fast enough to play the video.

Depends on the video. x265 needs a lot of cpu to decompress while playing.

I'm not using hardware acceleration on anything. And I'm on an old 15 year old dual core machine.

Let me try a test...

Code:

cpupower frequency-set -u 1600MHz
cpupower frequency-info
...
  current policy: frequency should be within 1.60 GHz and 1.60 GHz.
                  The governor "schedutil" may decide which speed to use
                  within this range.
  current CPU frequency: 1.60 GHz (asserted by call to hardware

I can still play this ok.

Code:

yt-dlp -f 22 https://m.youtube.com/watch?v=EbjZv3PCCLM -o - | mplayer -

And that is

Code:

22  mp4   1280x720    25  2 │ ~186.00MiB  718k https │ avc1.64001F    718k mp4a.40.2    0k 44k 720p

Also, I assume that firefox is using gstreamer? Instead of a media player.

You have a link the the podcast video?
Or you could check it with ffprobe

Lot of posts about firefox not using hardware accell the way other software does. With a machine new enough to have 3400mhz cpu, you probably don't need it.

peter7089 · 04-29-2023, 11:45 AM

I tried enabling hardware acceleration in firefox but i don't think it worked. On theory it should work, but it doesn't. Maybe it's hardware specific issue for my laptop.

Joe Rogan podcast is on Spotify, and you can watch it only in the browser. Spotify have restrictions and you can't stream podcast using third party software like mpv, similar to youtube videos.

teckk · 04-29-2023, 12:19 PM

You just need to scrape a little.

https://podcasts.apple.com/us/podcas...=1000610538418

Code:

mplayer https://s351.podbean.com/pb/1f381c7c6167cc462247e7999a4bab72/644ce310/data1/fs176/3751525/uploads/JREE_-_Episode_234_-_MIXED7pb77.mp3

Or

Code:

curl "$url" -o Joe234.mp3

peter7089 · 04-29-2023, 01:35 PM

This is only audio. I don't have issue listening only audio stream of the podcast on spotify in firefox. My issue is with the video stream of the podcast.