I-Firefox Community Forum

I'm having this weird issue where youtube videos will play fine as long as I don't seek the video. If I do seek a couple of times, the image will freeze but the audio continues. The subtitles also continue if enabled. Firefox Release 134.0.1--January 14, 2025 Fresh install from Flatpak. No addons installed.I have tried both on and off hardware acceleration but the issue still persists even in troubleshoot mode.But no problem with other firefox based browsers like mullvad,librewolf,zen.

Issue video: https://youtu.be/sAQKVvYRJt0?si=K78ODZALg_YAV2Dx

Hello! I'm connect my HUAWEI FreeBuds 5i to macbook. Listen some music, watch video on web without problem. When I put the headphones in the case, I realized that music or video with sound doesn't play until I take them out and put them in my ears. Music and videos automatically stop playing. Video without sound is played normally. At the same time in Safari everything plays normally. Function "Forget device" didn't work for me.

How can this be fixed?

I have recently encountered this issue with Youtube where a video playing perfectly normally will just stop at a random point and start loading endlessly. If I skip 5 seconds, it plays again without any issues until it reaches the same problem again. There isn't a pattern to this and I have not made any new changes to cause this issue. Additionally I have tested it on Chrome and Brave and this issue doesn't arise there. Any suggestion for a fix?

I have recently upgraded my laptop to Windows 11 running the following;

Edition Windows 11 Home Version 24H2 Installed on ‎12/‎16/‎2024 OS build 26100.2605 Experience Windows Feature Experience Pack 1000.26100.36.0

All of my videos from Lifeway, YouTube, even thumbnails on Etsy scramble the video making it unviewable. I contacted Dell and over a week we determined my hardware, software is not the issue. I switched browsers to Brave and Edge and these browsers did not have the same issues. Dell has requested I reach out to you.

Thank you, D Muennink 4324484749

I am having a problem on Firefox AVC1 and AV1 1080p60 YouTube videos play really bad but VP9 videos play fine only 1080p60 is bad on AVC1 and AV1 720p60 and below are fine i fixed AV1 issue by turning off AV1 now they play as VP9 video 1080p60 is fine but when i force VP9 into AVC1 video that video only shows 360p this issue is only on Firefox i tried same video on Google Chrome it is fine there is there anyway to fix this performance issue

Here is my pc specs

CPU: Intel Core i3-2120 OS: Windows 10 Pro 64-bit GPU: NVIDIA GeForce 210 512MB DDR3 RAM: 6GB

I'm using the web version of the Discord app. The problem is that in the Firefox browser, when broadcasting the screen, the sound is not broadcast to the viewers.

The sound is not broadcast in any of the cases.: - during the demonstration of the application - only when windows are displayed - when displaying the entire monitor screen

Previously, there was no such problem in the Firefox browser. Please add an audio recording option if I want to showcase a screen from web applications such as discord.

If for some reason you give a negative answer, then please make this question publicly available in the "Ask a question" section. Perhaps Firefox browser users will see my question and will be able to help me.

Do you know of a mod that won't allow Youtube to have a resolution higher than 720p, including when embedded? I almost-always have Youtube at 480p when watching through their site. I noticed that when watching a video on another site and that it's embedding Youtube, that the resolution is higher > 480p and in those cases it's not rare to be > 720p.

I'd like a mod or setting so that when it's active that Youtube can't have a resolution higher than 720p, including when embedded. Any idea if there's something alike?

Thank you kindly for your help

Hi, when I launch a custom video player on a certain site and go into full screen mode, and then want to exit it through ESC, I can’t do it and the picture freezes. I went to the browser console, and it gave me this error: Uncaught (in promise) TypeError: Not in fullscreen mode

   cancelFullScreen https://interneturok.ru/assets/custom-2dc6965f3c367b4e4590249bd2036dfc.js:578
   hotkeys https://interneturok.ru/assets/custom-2dc6965f3c367b4e4590249bd2036dfc.js:675
   dispatcher https://interneturok.ru/assets/custom-2dc6965f3c367b4e4590249bd2036dfc.js:131|

The technical support of that site told me to write to the browser support, I understood the problem is not on their side. I tried everything and went through incognito mode, the problem did not go away. Give me some advice or maybe the problem is with this site and not with the browser, I also tried to launch this video player through Google Chrome and there were no problems there

This is what the GPTchat wrote about the error from the console: Yes, this error is directly related to exiting fullscreen mode. It says that the custom-2dc6965f3c367b4e4590249bd2036dfc.js script on the site is trying to exit fullscreen when the browser thinks it is no longer in it.

That is, Firefox has already exited fullscreen mode, but the player itself "thinks" that it is still there. Therefore, when you press Esc, the script calls cancelFullScreen(), and the browser throws the error "Not in fullscreen mode".

Plus screen Error

I've recently done a clean reinstall of Windows 11 and have noticed that, only for Firefox (134.0.2, build ID 20250120135430), a few videos playback without any audio, yet the same videos play with audio when using edge as a comparison. Most (if not all) of these videos did play with audio in Firefox prior to this reinstall.

Firstly, I'm pretty sure this is not a windows sound mixer issue since many videos on the same page and tab play back with audio just fine in Firefox. The same goes for it not relating to the Firefox setting 'Speaker selection', under (burger) > settings > privacy & security > Permissions because videos of different formats (or using different players) on the same page play back audio fine. The tab is not muted. Again, some videos on the same browser tab play audio fine; some of a particular format or player only play the video, while missing the audio (and where Edge plays the same video with audio).

Another common and potentially relevant issue I've seen is that, this being a 'Windows 11 N" install, it was initially missing the settings > system > optional features > Media feature pack, but that is now something I've successfully added. I should add that windows did report problems when I initially tried to add the media feature pack but, after a very long delay, it eventually appeared to succeed when I ran a couple of DISM incantations that I think ended with - "dism /online /add-capability /capabilityname:Media.MediaFeaturePack~~~~0.0.1.0"

I have the 'Play DRM-controlled content' setting enabled.

Comparing the Firefox vs Edge video playback on this video test page - https://tools.woolyss.com/html5-audio-video-tester/ I get the following results (don't know how to get it formatted/aligned correctly, sorry) -

                           FF vid    FF audio    Edge vid    Edge audio
av1-opus-sita.webm          Works     Works       Works       Works
vp9-vorbis-spring.webm      Works     Works       Works       Works
vp8-vorbis-sintel.webm      Works     Works       Works       Works
avc-aac-nerdist-friends.mp4 Works     MISSING     Works       Works
avc-aac-big-buck-bunny.m4v  Works     MISSING     Works       Works
avc-mp3-sita.mov            Works     Works       Works       Works

And perhaps also relevant is that there's also a difference in the audio-only samples further down the table on the same page -

                   FF audio   Edge audio
audio-sample.mp3    Works      Works
audio-sample.weba   Works      Works
audio-sample.ogg    Works      Works
audio-sample.opus   Works      Works
audio-sample.flac   Works      Works
audio-sample.wav    Works      Works
audio-sample.m4a    FAILS      Works
ac192.mp3           Works      Works
spoonradio-hd.aac   FAILS      Works
audio.opus          Works      Works

Also, every 'v.redd.it' / reddit-video-player video plays the video fine but has no sound when using Firefox but plays both sound and video fine with Edge. Here's one for example - https://old.reddit.com/r/funny/comments/1i7y1nr/rock_paper_scissors/

I've seen lots of similar (but not identical) issues on Firefox video with no audio problems with suggestions a few things to try. In addition to what I've already mentioned above, I've tried the following without success -

- Restarting Windows - Restarting Firefox - Restarting Firefox with addons/extensions disabled - 'about:support' > Refresh Firefox - 'about:support' > Clear startup cache - (hamburger) > more tools > task manager > (click the little profile icon for the page playing the video) - I've checked the settings suggested here: https://support.mozilla.org/en-US/kb/fix-common-audio-and-video-issues#w_check-some-firefox-settings

I realise it may be possible to side-step this problem by flailing around with more drastic work-arounds like trying a clean re-install of Windows or a full uninstall and clean of Firefox, but that doesn't really help figure out the problem, which leaves the possibility it could easily happen again to me or others when it might be something that can be more properly fixed or guarded against in Firefox itself, so I hope someone can suggest what might be done to home in on identifying the cause of the problem and so learn whether a more precise fix can be employed.

This issue just appeared. Video will not play in Firefox. Windows10 PC, up to date with latest versions, as is Firefox. There is no error message or code. Just the spinning wheel. I see other people are having the same issue but I haven't seen a solution. Any ideas or help appreciated.

For many years, I have been exchanging video calls on Facebook.

Recent attempts to video call the same person I've been video calling for the past 3 years result in "your browser doesn't support video calls"

Have I been "hacked"?

Please explain.

Could a real person answer this question for me, please? Thank you.

Hi,I watching Iprime Movies & Many other Streaming Services A Notice appears on the screen ,Change youe provider(likes of Firefox) to Hd Please assist Thank you Darryl

Recently decided to try Mozilla for Windows. There is such a problem, and only on Mozilla: the video is very overexposed, the brightness is high, like in a fog, and on all video services, including YouTube. At the same time, I checked on all the other 3 browsers - everything is fine with the video. I did not change any settings in Mozilla, everything is by default. How to fix it?

I uploaded some videos to my website (burchmusic.com). They can be played on Safari, but not on Firefox. This is the error message I get: No video with supported format and MIME type found. I'm on MacBookPro running OS Sequoia 15.2.

Hello, I did a lot of search and followed all these advises: https://support.mozilla.org/en-US/questions/1229615 https://winaero.com/remove-your-browser-is-being-managed-by-your-organization-from-firefox/

1. I have not entry "DisableFirefoxAccounts" in "HKEY_CURRENT_USER\Software\Policies\Mozilla\Firefox". 2. I have no policies.json file in firefox directory. 3. I have a message "Your browser is being managed by your organization." in "Settings" (about:preferences). 4. In "about:policies" I have DisableFirefoxAccounts=TRUE. 5. in "about:config" identity.fxaccounts.enabled=false and grayed out.

Please help me to turn on the sync of bookmarks. All these listed issues obviously have something to do with it.

Youtube brought up in the broswer works fine with audio/video but on other websites I can view the video and can't hear the audio.

https://www.cnn.com/2024/12/15/us/drone-sightings-east-coast/index.html?iid=cnn_buildContentRecirc_end_recirc

I followed [article] ten realised that at the top it recommends not using quick time so uninstalled it,

however, after uninstalling quicktime, the browser plugin did not appear so it would not have worked anyway.

What solutions are there to this?

when accessing my voicemails for work, I need to access their online storage and listen from there. I used to use chrome and there were no issues. now, using firefox, I am being told to install Quicktime My understanding is that chrome uses NPAPI plugin. is there something similar on firefox?

I got this new Chromebook, and now I'm having issues using YouTube. When I select a video to watch, a message pops up at the top saying "To play video, you may need to install the required video codecs." I am able to watch the video I selected anyhow, with some minor issues with the picture and its frames I believe, however, when I try to watch a different video, it does not work. Sometimes it will play for a short bit, but will then stop, and start buffering. When I then refresh the page, the video will not play and will only buffer. I am not sure what to do, and if this is an issue with the browser, or the device itself, please help?