In Mozilla Firefox, you can open the about:config advanced settings page and set the '' option to 'false'.
In Google Chrome, Microsoft Edge, and other Chromium-based browsers, you can disable the 'Hardware Media Key Handling' flag.If you don't like this feature and wish Chrome, Safari, Firefox, or Edge would just leave your media keys alone, you can still disable it. How to Disable Media Keys in Web Browsers Any other browser based on Chromium-for example, browsers like Brave-will have support for media keys as long as they're built on Chromium 73 or later.Microsoft released the new version of Edge on January 15, 2020. Microsoft Edge gained support for media keys when it switched to the Chromium code that forms the basis of Google Chrome.
It became enabled by default with Firefox 81.) (Firefox had supported this feature since Firefox 71, but it was disabled by default. This feature has been around for a while in browsers like Apple Safari and Google Chrome. However, with the release of Firefox 81 in September 2020, support for media keys became universal among modern browsers: When Did Browsers Start Supporting These Keys?