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Hi there,

I’ve run into a strange issue with Firefox and WhatNot.com. A few days ago, video streams suddenly stopped working in Firefox, even though they had been fine the day before. I tried everything I could find likehelp docs, forum suggestions, reinstalling Firefox, creating a new profile, deleting Mozilla folders, even cleaning the registry. A few days later, it started working again, but I’m not sure what actually fixed it.

Now the problem is back. Some video streams work, but others just show a black screen. I’ve noticed that streams using OBS (webcams) work fine, but streams coming from phones (iPhone or Android) don’t load—just a black window.

When I checked the developer console during one of the blacked-out streams, I saw this error:

Firefox can’t establish a connection to the server at wss://128-14-195-99.edge.sd-rtn.com:4712/

This error doesn’t appear when streams are working.

To double-check, I asked my wife to try it on her Firefox browser. As soon as her browser updated, she started having the exact same issue.

Everything works fine in other browsers, but I’d really prefer to keep using Firefox.

Is there any known fix for this? Or a place I can report it as a possible bug?

Thanks in advance!

Hello people,

Please some help around the following issue, since a few days, Firefox will not play mp4 files directly in the browser. What it does when clicking to open an mp4 from the file server, it saves the file first and then opens a window to play it. Or it directly provides the save dialog window instead of playing it in the browser window directly.

Any ideas, appreciated. I have a lot of files to assess for my students, and this browser behavior makes it very tedious.

Greetings.

You are adding unwanted obfuscation, the sign in box for hotmail outlook now displays "Use firefox relay" instead nof my sign in options. I am sick to the YI teeth of havinf microsnot, firefox et al ruining sign in and other options. I wish to use the kit as is rather than be clicked and pointed in directions I have zero interests in.

Can you sort this out or not?

firefox already has sound disabled for some reason I do not know and cannot find, can oyu sort it out?

Do you have ANY interesst in cutting the gnarly carp tree?

It really is just another way to make us sign in and be stolen, shame on all of you, it is SUPPOSED to be against your very ethos.

When watching videos, switching between my Bluetooth headphones and Mac speakers will cause the sound not being able to output correctly, the video will be seem muted. Sound output is fine when using other explorer and apps. Restarting Firefox will usually fix the problem.

Hallo everyone,

after many hours of Google search and trying many changes in the "about:config" section im done with things to try so my last chance is here.

The problem i have is that videos dont play if i mouseover the firefox window or tab i.E. on the windows taskbar. The video will only start to play if i click on the window/tab and that window/tab is the "active" one im looking at.

It worked fine before but some firefox update f***ed this up (and yes the official firefox updates are the only thing that changed), no i dont know which update it was because i didnt recognize the problem right away.

The autoplay option is set to allow media and audio.

The weird thing is that when i open a video in the vlc player and do the mouseover, everything works just fine. So my conclusion is that some setting was messed up on the new firefox version.

Some data of my pc, everything is updated: - Windows 11 Pro - CPU is AMD Ryzen 7 5800X3D 3,4GHz - GPU is AMD Radeon RX 7900XT - RAM is 32GB DDR4 CL16 - Internet is wired connection with 250K speed - Firefox Version is 137.0.1

Sorry for my bad english and thank you in advance.

i can't watch a streaming movie without it stopping to buffer through out the whole movie . I never have a problem watch TV shows. It wont upload the stream long enough to keep playing . Can i increase the streaming a head so the movie doesn't stop playing till the end.

No sound when showing videos, i.g youtube etc, in firefox. Works fine in Chrome, and yes, the volume is on in firefox and laptop (Win11).

Is there a setting I have inadvertently touched.....?

Thanks!

This problem started yesterday. The sound in YouTube with Firefox is extremely low. As far as I can tell, the problem doesn't exist elsewhere. Other browers are OK with YouTube and other websites that have sound are OK with Firefox.

I reinstalled Firefox and rebooted the computer - still has the problem.

I'm using Windows 11 24H2 (home) on my desktop.

This issue came up in early April 2025.

Programs other than Firefox (e.g. Edge, Media Player) behave normally: when playing sound, if nothing is plugged into the 3.5 mm jack, the sound comes from the desktop's external speakers; and when an audio device (speakers or headphones) is plugged into the 3.5 mm jack, the sound instead comes from that device.

Where as Firefox will play using the internal speakers as expected, but when a device is plugged into the 3.5 mm jack, no sound signal goes to that device.

It seems then that the hardware is okay, and the problem must lie within Firefox, or within a Windows setting that is very specific to Firefox.

The sudden onset earlier this month may point to either a Firefox update, or (less likely) a Windows update.

Hi. There is a problem with video playback when skipping through the video using a playback bar. The video (but not audio) freezes at the spot when one skippes to another part of the video and re-establishes after a while (not so short while) to the part of the video that is currently played. I'm using Linux Fedora.

Initially connects video playing to Headphones via Bluetooth then audio stops. Reloading doesn't help. But the same works perfectly on other browsers. Problem is with Firefox audio setting. The problem started only a week ago for firefox

Since the last update, I believe, because this error occurs constantly and with EVERY video. This is often, not always, the case immediately after updating FF. Now it was fine for a while, but now it's so bad that I'm having trouble watching YT videos properly. Reason: Browser open, logged in to YT. I click on a video to play - video opens, plays maybe 10 to 20 seconds, then playback stops spinning top, I also found out during the last glitch after update that if I switch the resolution briefly, higher or lower doesn't matter - important is to leave the current resolution and switch to another one. And oh wonder - immediately, instantly with the change, the video starts playing. If I wait for this - without doing anything myself, it sometimes takes 30 - 40 seconds for the video to start ... sometimes it just "hangs" ... This is extremely annoying - if it doesn't work, I have to switch browsers... What is also extremely annoying is that it occurs almost regularly after an update ... until the next one possibly, for unknown reasons, does not fix the error, but sometimes mitigates it. Now, however, the disruption/interruption is so massive and totally annoying that I'm thinking of switching. I'm just tired of it ...

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Since the last update, I believe, because this error occurs constantly and with EVERY video. This is often, not always, the case immediately after updating FF. it was fine for a while, but now it's so bad that I'm having trouble watching YT videos properly. Reason: Browser open, logged in to YT. I click on a video to play - video opens, plays maybe 10 to 20 seconds, then playback stops spinning gyro, I also found out during the last glitch after update that if I switch the resolution briefly, higher or lower doesn't matter - important is to leave the current resolution and switch to another one. And oh wonder - immediately, instantly with the change, the video starts playing (for a while at least maybe 5 Minutes maybe 30 Sek... i´m done with FireFox ...) If I wait for this - without doing anything myself, it sometimes takes 30 - 40 seconds for the video to start ... sometimes it just “hangs” ... This is extremely annoying - if it doesn't work, I have to switch browsers... What also bothers me extremely is that it occurs almost regularly after an update ... until the next one possibly, for unknown reasons, does not fix the error, but sometimes mitigates it. Now, however, the disruption/interruption is so massive and totally annoying that I'm thinking of changing. I'm just tired of it ... Please fix it or shoot me ... any suggestions ??