I am running Firefox 119.0 on Linux and am unable to stream video on many sites. I have tested a few sites, and the only site that actually works for streaming video is YouTube. The others either say 'Source Error' or just load forever. Things I have tried: *Accepting cookies (via site exception) *Turned off Enhanced Tracking Protection for the site that won't stream video *Turned off pop-up blocker *Enabled auto-play of video and audio on the site *Checked for updates of Firefox (but there are none available) *Launched Firefox in Troubleshooting mode with all extensions and customizations disabled, but this makes no difference At this point, after doing some online research and trying everything I can think of, I'm really out of ideas. I would appreciate any suggestions or information anybody has. Thank you