Firefox Community Forum

"I’ve been having trouble with choppy YouTube videos in Firefox. It happens on both Wi-Fi and Ethernet connections. My system is running Windows 10, and I’ve already tried disabling hardware acceleration and clearing my browser cache. The issue persists even when I’m in Safe Mode. I’m using the latest version of Firefox (XX.XX). Any suggestions on how to fix this?"

This is where you describe the issue in detail.

Explain what’s happening (e.g., “Videos keep freezing after 10 seconds”).

Mention when it started and what you already tried.

Include your Firefox version (you can find it under Menu → Help → About Firefox).

Whenever I try to full screen a Youtube video a large solid white bar will appear on the bottom of my screen. It doesn't block the actual video or even the controls but it seems to push the entire video upwards. It only does this on firefox and only on youtube. It seems to be a solid empty space as I can't click on it and right clicking just gives me video playing options. I've tried restarting my computer and firefox a few times and that didn't work. It does however change size and with the browser zoom and color mode respectively. please help.

Reposting until I get help from someone. Windows/desktop. On Google Chrome, any streaming website I used with autoplay enabled would KEEP full screen mode ON after changing episodes. It would automatically go to a new page with the following episode and remain full screen. Why doesn't Firefox have this feature?? I'm seriously considering going back to Google Chrome for this one small feature. Every time I had any streaming service playing with autoplay enabled, I didn't have to manually select the full screen option every time. I am having to stand up and manually click full screen function. Every. Single. Time. Somebody please help me if there's a way to active that function.

i bought a GMKtec K12 Mini PC AMD Ryzen7 H 255 (Upgraded 8745HS) Oculink Support DDR5 and youtube videos at 4k 60 hz stutter big time when i log in to my youtube acount.i am a premium user.all driver are up to date.my intel laptops using firefox browser work perfect no frame drop whatsoever.i have bought 2 of this mini pc and bouth behaving same on firefox(i tried on all firefox browsers: F.NIGHTLY,FOR DEVELOPERS,ESR) I also have an laptop with AMD cpu and behave same: stutters on 4k 60hz. Recently i tried FLORP browser and youtube 4k 60hz works perfect until i log in to my youtube acount and then it starts stuttering and loosing frames big time so bad i even cannot watch the video.ive tried on trubleshoot mode ,started from scrtach with same results

Hi Team

I am facing 2 issue as below.

1. The issue the when I play the video on 2x in YouTube then video and audio both stats lagging.

2. When I am watching any video on YouTube in firefox and minimise it and again open the browser then is open in landscape mode although my auto rotating in off.

There are these 2 bugs which i have found.

Rest are Awesome you are doing great work.

Thank.

Jasvir

When I play a downloaded video that is in English, my downloaded file plays back in a foreign language, not English. What am I doing to cause this and how can I have the English version only in playback everytime? Thank you so much, being a pensioner I am eager awaiting the ability to donate to you excellent work as often as I like.

Since my Firefox updated, the audio system is not work that I miss most virtual meetings. I tried multiple times but I cannot update to play the audio system. Please help the steps to set up my computer system. Thank you. Jong Lee

I'm on Ubuntu (LTS) FF 145.0.2

The audio plays fine, but the video (youtube) freezes like every 40s or so. Playing videos in MPV or Brave is flawless. I dont see extra ordinary CPU activity or anything obvious.

Ideas why this could be?

When playing YouTube videos in fullscreen mode, the video appears to skip as would be expected with frame drops. However, with stats for nerds open on the videos, no frame drops are reported and buffer health is fine (40+ seconds).

I'm on an up to date version of FireFox, I've tried with hardware acceleration both enabled and disabled, I've tried opening task manager to see if system usage looked weird (it doesn't, although it's not like I can have TM running while the video is playing in fullscreen so hard to tell) and am at a complete loss. All drivers for CPU and GPU are verifiably up to date (did full system check three days ago) and the only conclusion I've been able to come to is that it must be either a problem with FireFox or a problem with YouTube. I've seen no recent reports on any of the forums that I can find pointing to either as the culprit. So if anyone has any further ideas or solutions, I'd love to here them.

I have two audio outputs I'm trying to use. I want my main output (device A) to stay as the default, but have Firefox play out of the other (device B). There is no option within the browser's settings to change the output device, so I am controlling them through Windows' Volume Mixer. If I set device B as the system default, it works, and it allows me to change Firefox to play from any output. However, if anything else is set as the system default and I set Firefox to play from device B, it doesn't work. It seems like it ignores only specifically that one device, and only when it is set at an app-specific level. It works on all my other outputs no matter which is the default. Even if I have device B as the system default, then at the app-specific level, set FF to any other device, then select device B, it ignores this and continues to play out of whatever device it played from last. The ONLY way I can get Firefox to play audio from device B is with device B as the system default. It's already disappointing that I can't control this directly from FF settings, but the fact that it's also ignoring my OS settings is really frustrating. I've already contacted Windows support, and they say the problem is with Firefox since all my audio devices are working fine. If anyone can tell me a way to just manage this setting properly in Firefox, some way to get Firefox to recognize the device, or some way to allow my windows settings to take priority over whatever FF is trying to do, that would be greatly appreciated. Thanks.