I cannot get certain videos to play on Firefox. YouTube, Instagram, Tumblr all can play videos. Pretty much everything else doesn't work. Patreon, I get a black screen. On Twitch, I can only see the 'not currently streaming' screen, even if they're currently live, and VODs don't work. My computer specs are below. Operating system is Windows 10, I use Windows Defender for anti-virus. Everything works completely fine in other browsers. Here's everything I've tried to fix this: * Updating Firefox * Updating my computer * Running in Incognito * Running in troubleshooting mode * Allowing autoplay * Disabling hardware acceleration * Disabling addons * Clearing cache and data * Enabling/disabling DRM content * Installing Windows Media Pack My specs: Processor Intel(R) Core(TM) i7-10700F CPU @ 2.90GHz 2.90 GHz Installed RAM 32.0 GB (31.8 GB usable) Storage 932 GB HDD TOSHIBA DT01ACA100, 477 GB SSD Micron 2300 NVMe 512GB Graphics Card NVIDIA GeForce RTX 3060 Ti (8 GB) Device ID C6C4BD2F-BD36-40B6-A917-13896770194D Product ID 00325-82058-09721-AAOEM System Type 64-bit operating system, x64-based processor This has been going on for over a year now. I've gone through all of the above troubleshooting steps multiple times. The only progress I've made is getting YouTube from nonfunctional to working again.