Can you provide a link to video? Did you try Firefox in Safe Mode? https://support.mozilla.org/en-US/kb/diagnose-firefox-issues-using-troubleshoot-mode#search104

Try downloading Firefox from Mozilla. Download, unzip, and run firefox-bin from the folder and see if you have the same issue. https://www.mozilla.org/en-US/firefox/all/#product-desktop-release

I have no issues is several versions of Firefox. see screenshot

Just to be sure, make sure you have FFmpeg to fully support HTML5 players.

Is this about Firefox on a desktop device since you posted with a ChromeOS (CrOS) useragent ?

Make sure you have the latest FFmpeg and libavcodec packages installed.

jonzn4SUSE This happens to all YouTube videos I try to play, it doesn't matter which video I play. I have tried Firefox in safe mode and still the same issue no resolution above 360p. I have also installed Firefox from Mozilla still made no difference. I'm thinking that Manjaro ARM XFCE for Raspberry PI 400 maybe the issue.

Here is a video link you can try https://www.youtube.com/watch?v=gslccIy0E6M US Pilots Rush for Their Massive Stealth Bombers and Takeoff at Full Throttle

cor-el

I was using Chrome OS with Raspberry Pi OS 64 bit to send the message. Please ignore that I'm using Chrome OS. I more interested in Firefox 118.0.1 been the issue here.

Do you have ffmpeg installed?

sudo pacman -S ffmpeg

or

flatpak install org.freedesktop.Platform.ffmpeg-full

Pick the flatpak runtime that matches firefox (flathub currently uses 22.08).

Can you play higher resolution videos with the flatpak package?

Do you have ffmpeg installed? sudo pacman -S ffmpeg or flatpak install org.freedesktop.Platform.ffmpeg-full Pick the flatpak runtime that matches firefox (flathub currently uses 22.08). Can you play higher resolution videos with the flatpak package?

I do have ffmpeg already installed! I reinstalled the ffmpeg to no avail Firefox still does not allow me to play videos above 360p.

Did you try the flatpak package?

I'm using Linux Firefox Version 118.0.1-1 . I have tried Firefox with Raspberry Pi 400 4 Gigabyte and Raspberry Pi 4B 8 Gigabyte both have the same problem, no videos above 360p on YouTube when using Manjaro ARM 64bit Plasma KDE or XFCE. I also have tried the following Linux systems Ubuntu ARM 64bit, Raspberry Pi Full OS 64bit Bookworm and they both work above 360p with no probables.

I believe Firefox is the issue with Manjaro ARM, but what exactly is causing this issue I do not know. I could not find anyone else with the same issue using Manjaro ARM on Raspberry Pi 400 or Raspberry Pi 4B.

I'm don't have a great understanding when it comes to issues with Linux.

It sounds like a Manjaro-specific issue, the flatpak package might be unaffected.

If you have limited Linux knowledge, you will have less issues with a more mainstream distro like Ubuntu.