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Hello, this is the basic problem:

The short version is that there is a problem with Firefox not interacting with the scrub bar and volume bar. (all other controls work fine) We know it's a Firefox thing because everything works with Brave. (or an interaction between Firefox and the OS at least, Firefox is heavily involved)

There is more detail and we have done some work on it here: CashyOS forum post

You can use the Firefox manifesto V0.2. video for an example, as it displays all the above problems for me.

I can get you guys whatever other data might be needed, but I kinda need an idea where to look to try and fix this, as all the other posts I have managed to find don't seem to have similar enough issues to work.

Edit/Update: I have done some further testing and discovered that it is firefox's default/built in player that is the problem. I can use the 'site specific' players (like from reddit) just fine. So there is something happening with that default one.

YouTube videos are frequently buffering and sometimes play slowly in Firefox, even when my internet connection seems to be working normally. Please help me identify the cause and suggest steps to fix the problem. I would also like to know whether any Firefox settings, extensions, cache, or hardware-acceleration settings could be causing this issue.

You can write:

YouTube videos are frequently buffering and sometimes play slowly in Firefox, even when my internet connection seems to be working normally. Please help me identify the cause and suggest steps to fix the problem. I would also like to know whether any Firefox settings, extensions, cache, or hardware-acceleration settings could be causing this issue.

Hello, I am currently using windows 11 with firefox 149.0. Regardless of what website I use (youtube. steam etc), the browser struggles to establish consistent connection to my bluetooth earbuds. It connects for one moment, but then soon the volume goes out and eventually it disconnects. Though it would reconnect soon, the cycle just keeps ongoing. I have experimented with other apps and browsers, as well as multiple bluetooth earbuds of other brands to be sure that it is a firefox issue. I have checked the volume mixer menu to ensure that there is nothing wrong. I have also made sure that my drivers are all up to date with no issue. But the issue still persists.

The mobile version of Firefox comes with a player featuring a purple progress bar and all the basics, but there’s one thing missing: the ability to fast-forward and rewind. I use this a lot on news sites, for example, or when listening to podcasts on websites. Not being able to fast-forward in this way means I miss information or have to keep moving the bar until I find the exact spot. Is there any way to change this?

Title pretty much says it all. got the new update and now every time i watch a video on Disney +, the pause menu will fade then the video goes super dark. it was working fine yesterday

When i go to fullscreen from default view on YouTube, the screen becomes grey but the video is still playing and the audio is working fine. However, i can go to fullscreen just fine if im in cinema mode. How do i fix this?

Tested on OpenSuse Tumbleweed both native & flatpak but also on latest live ubuntu image . After some seconds , with healthy buffer , video pauses/starts with new buffer , until it drops to 480p ignoring the manually 4K setting . When setting manually again to 4K , YT throws error . Blocking av1 and switching to vp9 fixes it . Hardware capable of running av1 (amd , rdna3 , rx 7800t) , local videos or using other chromium based browsers work fine .

Title. 156.0 had NVIDIA Video Super Resolution working just fine. 156.0.1 has broken it on my setup. Nothing I have done has brought it back - toggling settings, clearing caches, forcing it on in about:config, etc. The plugin seems to be broken.

Was working just fine for over a year prior.

Latest Stable Firefox 156.0.1 RTX 5080 Driver 596.49 (May '26)

Does not show as working in the Control Panel, and is clearly not working on any video site. YouTube, the BBC, and Twitch were the ones most tested.

Please consider a fix. Thank you.

Since one of the most recent updates, I've been having the following problem:

A video from YouTube or Twitch is playing in full-screen mode in Window 1.

When I open another window and switch back and forth between the two windows, the second window doesn't fill the entire screen, and instead of the Windows taskbar, part of the video from Window 1 is displayed at the bottom. Is there a way to change this back?

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When I play YouTube videos in Firefox for Android, the video keeps pausing and buffering constantly. I have tried clearing browser cache and disabling all extensions, but the problem still occurs. My device is Android mobile phone. I hope to get help to fix this playback stuttering issue.

When I play YouTube videos in Firefox for Android, the video keeps pausing and buffering constantly. I have tried clearing browser cache and disabling all extensions, but the problem still occurs. My device is Android mobile phone. I hope to get help to fix this playback stuttering issue.

Постоянное отображение панели задач (до тех пор, пока не нажму на иконку браузера на панели дважды. Повторяется с каждым заходом в режим "на весь экран" ), при просмотре видео, в браузере, в формате "на весь экран" с версии 156.0. в других браузерах подобной проблемы нет, только в Firefox. Прикладываю скрин визуального отображения проблемы. С настройками самой панели задач проблем нет, перепроверял.

I am using Firefox on an Android phone. MP4 videos are not opening or playing properly in Firefox. The video either does not open, does not play, or does not display correctly. Please help me fix this issue.

This happened when I dl latest version of FF. Short Instagram videos presented as part of a story on yahoo.com website are not loading. I do not have Enhanced Tracking and never had this problem until installed newest version