Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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video format or mime type is not supported

Android 版 Firefox トラブルシューティング
mac1574 replied
mac1574
mac1574

I can play youtube videos but when I go on to a video chat room website I get this message "video format or mime type is not supported"

I can play youtube videos but when I go on to a video chat room website I get this message "video format or mime type is not supported"

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SHOBLE THOMAS
SHOBLE THOMAS

The 'No video with supported format and MIME type found' error message is about the HTML5 media player. So you do not appear to have support in Windows for playing the media file(s) in the formats that are available.

See also:

https://support.mozilla.org/kb/viewing-html5-audio-and-video Setting media.directshow.enabled to false will disable the HTML5 media player for H.264 content and might make a website to use a Flash player as fallback. You may have to remove the cookies to make this work.

mac1574
mac1574 質問者

I'm using Firefox on my phone so it's not an windows issue. My phone is a android so I need help getting it work on my phone.