6 Ways to Overcome Video Format Not Supported in Firefox

Sometimes watching a video via a browser feels really easy—just click play, and you’re done. But if suddenly the message “Video Format or MIME Type Not Supported”, duh…annoying.

Problems like this often appear in Mozilla Firefox, and cause videos that should be able to be played to become stuck or error.

Don’t worry, you’re not alone! Here we will discuss some of the most effective ways to resolve video errors in Firefox so that you can watch videos again without problems.

Solution for videos not playing in Firefox

Problems like this have been reported quite a lot by Firefox users. The causes can be varied, and here Jakarta Studio has also collected several solutions for you.

Clearing Firefox Cache

The first step you need to try is clearing the cache in Firefox. Usually, cache build-up can be the cause of video playback failing.

Cache is actually temporary data stored to speed up site loading. However, sometimes too much cache can actually cause problems in the browser, including errors when playing videos.

To remove it, just follow these easy steps:

• Open the Firefox application on your computer.
• Click three lines in the top right corner and select Arrangement.
• Open the tab Privacy & Security.
• In part Cookies and Site Dataclick Erase Data.
• Check all the options that appear and click Delete.
• Once the cache is cleared, restart Firefox and try playing the video again.

Automatically Delete Cookies

Apart from cache, cookies can also cause the same problem. Well, in the latest version of Firefox, the cookie and cache settings have been combined, so clearing cookies is even easier.

Apart from that, you can also activate the setting so that cookies are automatically deleted every time you close Firefox. This way, you don’t need to bother cleaning cookies manually every time.

How to activate it:

• Open Firefox Settings and select Privacy & Security.
• Search for options Delete cookies and site data when Firefox is closed and check the box.
• With this setting, Firefox will automatically clear cookies every time it is closed.

Install the Media Feature Pack

For those of you who are Windows 10 N or Windows 10 KN users, video playback problems in Firefox could be caused by the absence of the Media Feature Pack.

This version of Windows is not equipped with media features that support various video formats, including those required by browsers such as Firefox.

To overcome this, you can download and install the Media Feature Pack from Microsoft. By installing this package, Windows will support more media formats and make it easier to play videos without errors.

Just download the Media Feature Pack that suits your version of Windows from the official Microsoft website.

Install the NoPlugin Add-on

If the previous steps haven’t worked, it’s time to try using the NoPlugin add-on in Firefox. This add-on works by converting incompatible video formats to HTML5, which is easier for browsers to accept.

How to install it:

• Press Ctrl + Shift + A to open the menu Add-ons.
• Type No Plugins in the search field.
• Choose No Plugins by Corbin Davenport.
• Click Add to Firefox.
• Once the add-on is installed, try opening the video that previously had problems.

Reinstall Firefox

Next, you can try reinstalling Firefox. By reinstalling, all Firefox files that may be damaged or problematic will be removed and replaced with the new version.

The steps are simple:

• Open Control Panel through Start Menu.
• Click Uninstall a Program and search Firefox.
• Right click on Firefox and select it Uninstall.
• Once uninstalled, download the latest version of Firefox from the official site.
• Install Firefox and try again to play the video.

Switch to Another Browser

If all the solutions don’t work, you can try switching to another browser. Many browsers are more stable and support various video formats, such as Google Chrome, Microsoft Edge, and Opera.

So, if you are already annoyed with Firefox, try opening the same video in one of these browsers. Who knows, the problem only occurs in Firefox!

Conclusion

So, those are some ways you can try to solve the “Video Format or MIME Type is Not Supported” problem in Firefox. So, there’s no need to panic anymore if one day you encounter this error.

If you have questions or other methods that you haven’t tried, don’t hesitate to ask. Good luck, and good luck!