Firefox Community Forum

I have been looking for any "cast to device" button or setting on and off for a few weeks now and can't seem to find it. Not sure if it's just right out disabled in the browser (because other sites allow me to cast), but YouTube specifically just doesn't have the option anymore. Just wondering if it's something on my end or if it's fixable at all.

Some videos work perfectly fine, however for some videos audio lags behind the video. The same video file perfectly works in Chromium as a control test. Example file is MP4, inside was initially h264 video with AAC audio, for test I re-encoded video to be svt-AV1 with AAC / flac as well - no difference, audio still lags behind. Local players (mpv) and Chromium works perfectly. No plugins which can affect it - for testing disabled them all. I really try hard to like Firefox but this thing is a real bummer. Any ideas what can be causing? P.S. I tested both firefox compiled from source and binary package provided by my distro. Linux system if that matters.

Whenever I'm watching YouTube and a video goes to the next, it resets back to default setting for the video. Is there a way to fix this? And I've tried to reset my cookies and site data, didn't work.

I've noticed that Youtube videos on Firefox are far more washed out when compared to Google Chrome. HDR is enabled on my Monitor and in Windows 11; however, the issue is present for standard SDR videos as well. Any idea what is going on here?

Auto Play. Browser tabs to youtube videos, and maybe others are now playing automatically after update to Firefox 148.0 (64bit).

it was NOT doing this before this Firefox update to 148.0 (64bit).

I am running Windows 11 (64bit).

I'm exploring Steam Deck desktop mode more and I'm running into issues with Firefox not rendering some videos on my personal website. I wasn't sure if it was a Steam Deck, KDE Plasma, Firefox, or an issue with something else, so I tested the same website with Vivaldi and the video played without any issues. This makes me feel like it's probably Firefox, but not totally sure yet.

I've already tried adjusting the autoplay media permissions for the website from the default to "Allow Audio and Video" in case that was doing something. I've also tested in Troubleshoot mode to see if the one extension I have installed was causing any issues and that didn't change anything either. Any other ideas I can try? Or, is there some way to determine if this needs a bug fix/there's nothing I can do on my end?