Neither the [`` example on MDN](https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/video ) nor the [HTML5 WebM Video Test here](https://www.tekeye.uk/ht… (xem thêm)
Neither the [`
So how do I get them running? A significant portion of the internet runs on WebM and the fact that Mozilla's own dev docs can't show examples is a good indication of a problem.
My YouTube video just vanished today.
The screen area where the video plays, is blank. Chat starts out then stops.
Dear, When playing a video on Youtube, Jellyfin or listening to the radio the video stops after a second of playing. Restarting FireFox works for a short amount of time a… (xem thêm)
Dear, When playing a video on Youtube, Jellyfin or listening to the radio the video stops after a second of playing. Restarting FireFox works for a short amount of time and after that constant pausing of video's after pressing play. Really annoying.
What I allready tried - What is pressed --> none - Rebooting PC --> 5-10 min fix - Restarting FireFox --> 5-10 min fix - Updating FireFox --> Was on the newest version of 28 OKT 2025 - Updating Windows 11 --> Was on the newest version - Problem Solving Mode (So plugins/addons disabled) --> No fix - Chrome --> Works perfectly - Brave --> Works perfectly
Any idea's/fixes
Why does Firefox not produce sound on any website - it used to - but not anymore, but Microsoft Edge does?
Speech output for Albanian on the website "loecsen.com" > language course "Albanian". Words cannot be heard under Windows 11. What can I do? I downloaded the Albanian … (xem thêm)
Speech output for Albanian on the website "loecsen.com" > language course "Albanian". Words cannot be heard under Windows 11. What can I do? I downloaded the Albanian language pack, but the voice isn't there. Is this a Firefox or Windows problem?
Link: https://www.loecsen.com/de/lernen-albanisch
Greetings from Switzerland
why have i no sound now in youtube but use another browser to test sound it works
bold textj'aimerais regarder cette vidéo sur ma télé
Just updated to 144.0.2 (aarch64) on my MacMB Pro running Sequoia 15.7.1 with no other changes and now I can't play any YouTube videos, whether embedded in a website or Y… (xem thêm)
Just updated to 144.0.2 (aarch64) on my MacMB Pro running Sequoia 15.7.1 with no other changes and now I can't play any YouTube videos, whether embedded in a website or YT directly. Get eithger a black screen or white, such as below. What arcane setting do I have to mess with now to get this back to normal? (OK in Safari.)
