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.

Avatar for Username

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

This thread was archived. اگر به کمک نیاز دارید لطفاً یک سؤال بپرسید.

I have installed media feature pack but still h264 etc. don't work in firefox. Why can't I play some video in Firefox?

  • 1 پاسخ
  • 4 have this problem
  • 4 views
  • آخرین پاسخ توسّط Shadow110

per2per
per2per
more options

Can't use Twitch, twitter videos and some videos on youtube right after a livestream. I get that "to enhanced video quality install microsoft media pack" or something like that, but I already have. I get that youtube error list showing red on h.264 and some other format also.

Can't use Twitch, twitter videos and some videos on youtube right after a livestream. I get that "to enhanced video quality install microsoft media pack" or something like that, but I already have. I get that youtube error list showing red on h.264 and some other format also.

All Replies (1)

Shadow110
Shadow110
more options

Uninstall and download Full Version 56.0.1 Installer from here : https://www.mozilla.org/en-US/firefox/all/

Check your Flash to see if running Flash Player Version: 27.0.0.170

Please let us know if this solved your issue or if need further assistance.