Firefox Community Forum

Since a few days ago, Firefox has been struggling with the likes of youtube, twitch and other streaming videos where the the videos will constantly freeze up, forcing me to use a different browser in order to watch videos.

Nothing has changed (ie I have not added any new extensions), and have also done a flat re-install of Firefox to no avail (as well as trying firefox without the Mozilla VPN on to see if that did anything).

From some long time the is no sound when i open music or movie in browser dont know whats happend - restart or new version of browser did not help at all - other browsers everything works fine

I tried streaming to my sister's PC. Her browser defaults to Firefox which I didn't notice until later. WinTV 10 Extend streamed for over 2.5 hours. I then changed to stream using Microsoft Edge. It streamed for 5min and 13 sec and then got the same audio distortion as on my PC.

I tried to install FireFox on my PC but found it is a newer version. My sister's FireFox version 142 is from August 2025. This newer version 149 I installed shows the streaming bar loading but never begins to play the video. A circle of dots spins on the normal video viewing area, as if trying to load the video.

I believe that all these Browser platforms have been adding so much additional security measures it is preventing normal streaming possible. I can't even stream YouTube videos on my newer version 149 of FireFox.

I tried to find a FireFox support chat line with no success. I would assume there is a way to allow video streaming by creating exceptions.

Bitte wie kann ich dauerhaft einstellen (bei Firefox), dass Videos, die ich mir anschauen möchte, generell mit Ton starten (wie zb die ZDF Mediathek)?? Ich bitte um Hilfe, besten Dank, mfG S.Schäfer

Make amazon product video work on firefox. I am using fedora 43 kde plasma recently updated. I have a Nvidia video card RTX 5060 ti and using propriety Nvidia drivers Video starts and then stops or after turning off hardware accelaration ran intermitantly then stops. Sometimes telling me the video file is corrupted

Have to keep pressing keys periodically when streaming video in a Firefox tab to prevent the screen going dark. The Ubuntu Mate Power Management settings have all been configured to prevent the System from doing so, so I'm wondering if this has something to do with Firefox. As a caregiver for a disabled person otherwise without television access I would find this very helpful.

There is an issue with MKV video playback with MP3 audio track in FireFox. The problem is that MKV video plays MP3 audio track without any sound. With AAC audio track the problem is that MKV video initially downloads whole video and only then plays it. In comparison with MP3 and AAC the benefit of MP3 is much better quality and it starts playing without downloading whole video like MP4.

It would be nice if you add support MKV video with MP3 audio playback.

Video file link: https://v01d.have.lv/vp/movies/test/fm/al.mkv

I cannot get audio to play on the browser. I've gone into settings and the default says that audio should be on for all websites. However, Youtube, facebook, instagram, etc., won't play audio. Audio plays on other browsers (Chrome, Edge). what must I do to get audio working?

Whenever i try to open YT Videos or other in-browser videos in Full-Screen, the video only fills the screen to like 95%. The top and the left have a small bar, which just shows my desktop background. (See att.)

Closing the Full screen window and resizing the firefox window, repairs the issue. But after a restart it happens again.

Enabling hardware acc. kinda fixes it, but not consistently. And i would prefer to not use hardware acc.

A reinstall did not help and i dont seem to be the only one with this issue.

Hello All,

I noticed that while YouTube videos play with no problems (despite those videos not starting automatically if I open them in a new tab) YouTube Music does not play anything at all. If I open it on my Android Smartphone it works like a charm, but on desktop Firefox nothing.

I'm using Linux Mint 22.3 - Cinnamon 64-bit Kernel 6.17.0-19-generic Desktop Environment: Cinnamon 6.6.7

I installed the ffmpeg codec package Cleared cookies and data for YouTube I did some research on my own and enabled in about:config "media.ffmpeg.vaapi.enabled set to False" Enabled in settings Play DRM protected content Disabled using Hardware acceleration Also PulseAudio is installed

Thank you in advance to anyone who can help me understand what's happening

I see a youtube video ready to play when I open my wifi icon on the taskbar. Only happens when Firefox has Youtube open in a tab and I've watched at least one video in preview mode or on the video page. I really wish to turn it off if I can.

When I play YouTube videos in Firefox, they are constantly choppy and slow, even though my internet connection is fine and other browsers (like Chrome) work smoothly. This happens with both HD and lower quality videos. I've already tried clearing cache and disabling extensions, but the issue persists. Please help me fix this.