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Why is Firefox slow and incompatible with Youtube?

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After reinstalling FF it seems very slow now. After trying to get Firefox to work with youtube for a year STILL no luck. Reading that Youtube needs H264 but I am not seeing that in the Firefox Applications. Why is this after reinstalling Firefox?

After reinstalling FF it seems very slow now. After trying to get Firefox to work with youtube for a year STILL no luck. Reading that Youtube needs H264 but I am not seeing that in the Firefox Applications. Why is this after reinstalling Firefox?

Additional System Details

Installed Plug-ins

  • Adobe PDF Plug-In For Firefox and Netscape 11.0.8
  • GEPlugin
  • Google Update
  • NASAEyes
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
  • Shockwave Flash 26.0 r0
  • 5.1.40416.0
  • Windows Presentation Foundation (WPF) plug-in for Mozilla browsers

Application

  • User Agent: Mozilla/5.0 (Windows NT 5.2; WOW64; rv:52.0) Gecko/20100101 Firefox/52.0

More Information

James
  • Moderator
1603 solutions 11348 answers

Are you really using Windows server 2003 ?

Microsoft only prvides media feature packs to Windows Vista, 7, 8, 10 but not WinXP and I guess server 2003.

You can see what you can support HTML5 player at say https://www.youtube.com/html5/ as all check marks should ideally be blue.

Not sure if this guide for WinXP will work for server 2003. http://www.msfn.org/board/topic/175591-enable-mp4-h264-aac-html5-video-in-firefox-on-windows-xp-without-flash/

Are you really using Windows server 2003 ? Microsoft only prvides media feature packs to Windows Vista, 7, 8, 10 but not WinXP and I guess server 2003. You can see what you can support HTML5 player at say https://www.youtube.com/html5/ as all check marks should ideally be blue. Not sure if this guide for WinXP will work for server 2003. http://www.msfn.org/board/topic/175591-enable-mp4-h264-aac-html5-video-in-firefox-on-windows-xp-without-flash/

Question owner

I am using XP Pro

What is in blue is :

HTMLVideoElement Media Source Extensions WebM VP8 MSE & WebM VP9\

I am using XP Pro What is in blue is : HTMLVideoElement Media Source Extensions WebM VP8 MSE & WebM VP9\