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Firefox video player

I get a "Sorry, the video player failed to load.(Error Code: 104153)" error when clicking links from a search for a video, if that video is available on YouTube it opens … (read more)

I get a "Sorry, the video player failed to load.(Error Code: 104153)" error when clicking links from a search for a video, if that video is available on YouTube it opens and plays just fine, not from other websites though - and it should. Fix?

Archived 9 280

Firefox having problems with streams: This video is either unavailable or not supported in this browser. (Error #4000)

Hello, I'm having a problem on Windows 10. It's a fresh windows installation and I tried already some solutions: reinstalling firefox, deleting cache, refreshing firefox,… (read more)

Hello, I'm having a problem on Windows 10. It's a fresh windows installation and I tried already some solutions: reinstalling firefox, deleting cache, refreshing firefox, private windows, no add ons, trouble shoot mod. Nothing helped. The problem seems to be with live stream, either on twitch.tv or youtube.

Solved Archived 3 1541

"No Video with Supported Format and MIME Type Found" On

As the title says. I get this prompt on videos from different, yet particular websites and sources. And they fail to load. It's also happened where some video's work and … (read more)

As the title says. I get this prompt on videos from different, yet particular websites and sources. And they fail to load. It's also happened where some video's work and some don't, side-by-side on the same website and session.

  • I've tried clearing all of my cached data, my browser history, cookies, site-data, settings, and fill-out information. No avail.
  • I've tried disabling all of my extensions and add-ons.
  • I've even tried using google instead, but I just get constant loading on those particular video's with no thumbnail (As depicted in second picture).
  • I've checked my video drivers for updates.
  • I've tried reinstalling Adobe Flash Player, even though it says it's no longer supported.

Since it also might be happening in another browser. I understand how this might not be Firefox's fault. But I'm hoping you'll be able to help me still.

Archived 3 289

Washed Out Video in Youtube Compared to Chrome

I've noticed that Youtube videos on Firefox are far more washed out when compared to Google Chrome. HDR is enabled on my Monitor and in Windows 11; however, the issue is … (read more)

I've noticed that Youtube videos on Firefox are far more washed out when compared to Google Chrome. HDR is enabled on my Monitor and in Windows 11; however, the issue is present for standard SDR videos as well. Any idea what is going on here?

Archived 2 220

Firefox audio fades in instead of starting instantly

I just switched to a new PC (Windows 11) and when using Firefox to watch videos, the audio fades in briefly instead of starting instantly. This happens with youtube, prim… (read more)

I just switched to a new PC (Windows 11) and when using Firefox to watch videos, the audio fades in briefly instead of starting instantly. This happens with youtube, prime video, netflix etc. I have tested in Edge and this does not occur. I am using a bluetooth headset. I haven't been able to find anything about this online so open to any help.

Archived 2 120

How to fix audio not playing via HDMI

Whenever I play something in the browser while connected to my TV by HDMI, the sound still comes out of the laptop speakers. This happened suddenly, without any discernib… (read more)

Whenever I play something in the browser while connected to my TV by HDMI, the sound still comes out of the laptop speakers. This happened suddenly, without any discernible reason, and I can't seem to fix it. Everything else works, only content played from Firefox remains in the laptop speakers. I've checked my audio mixer, nothing seems amiss, I've updated Firefox and refreshed the application, still nothing. Hell, I've even tried different cables and HDMI ports, but nothing works. What could be the issue? Why did my audio suddenly stop working, and what can I do about it?

Solved Archived 1 339

audio is not playing in firefox

audio is not playing in firefox, nor does it appear in my third party sound mixer like it usually does. it does appear in windows' sound mixer, but does not play any audi… (read more)

audio is not playing in firefox, nor does it appear in my third party sound mixer like it usually does. it does appear in windows' sound mixer, but does not play any audio. i have refreshed firefox and checked my drivers and my devices work fine. firefox is the only application on my computer that refuses to play audio.

Archived 1 290