Your screenshot only shows different bit rates, but doesn't show proof of the issue. Provide links to the video(s) that are not working at higher bit rates. Did you try Firefox in [https://support.mozilla.org/en-US/kb/diagnose-firefox-issues-using-troubleshoot-mode#search104 Troubleshoot Mode]? I have no issues with higher bit rate videos. see screenshots My wittle pc doesn't have processing power of your computer. ;-)) https://www.youtube.com/watch?v=e6OQkwSvyVc Japan in 8K- 1 Hour Relaxing Aerial Film https://www.youtube.com/watch?v=qmN1Gf8rRc8

''<p>Larry Silverman [[#question-1445675|said]]</p>'' <blockquote>Firefox has trouble playing these files</blockquote> What sort of trouble? Do they play at all? Make sure you have not [[Upgrade your graphics drivers to use hardware acceleration and WebGL#w_turning-off-hardware-acceleration|disabled hardware acceleration]]. Try changing '''media.av1.enabled''' to '''false''' in [https://support.mozilla.org/en-US/kb/about-config-editor-firefox about:config].