This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Hierdie gesprek is in die argief. Vra asseblief 'n nuwe vraag as jy hulp nodig het.

microsoft video extensions

more options

In the Microsoft Store there are all these updates for video extensions like "AV1 Video Extension". Should I be doing these updates? Do they make any difference to streaming video on the Firefox Browser?

In the Microsoft Store there are all these updates for video extensions like "AV1 Video Extension". Should I be doing these updates? Do they make any difference to streaming video on the Firefox Browser?

All Replies (1)

more options

Hi jasonz, what problem are you having with video in Firefox?

When decoding videos that were encoded using a patented codec, Firefox uses the Windows Media Foundation. Some versions of Windows are unbundled and in that case, the Media Foundation needs to be downloaded and installed manually. There is more information in the following article:

Fix video and audio problems on Firefox for Windows N editions

A second issue arises on sites that use DRM to control viewing and copying. Such sites include Netflix and Amazon Prime Video. More info on DRM in the following article:

Watch DRM content on Firefox

Were either of those relevant to the problem in your Firefox?