848562 - Cannot play H.264 video on my Windows machine

Status: RESOLVED DUPLICATE of bug 848994

(Core :: Audio/Video, defect)

Description

[(no longer active)]

In Nightly when I go to <http://ie.microsoft.com/testdrive/graphics/videoformatsupport/default.html>, I can only play WebM videos.  The media.windows-media-foundation.enabled pref's value is true (the default.)

Comment 1

[cajbir (:cajbir)]

What are the details of your Windows machine? OS version, etc?

Comment 2

[Chris Pearce [:cpearce (Not reading bugmail)]]

This page plays for me in windows nightlies. It previously didn't, are you sure your nightly is up to date?

Comment 3

[(no longer active)]

(In reply to comment #1)
> What are the details of your Windows machine? OS version, etc?

It runs Windows Server 2012.  What other info can I provide?

(Also, yeah, my Nightly is updated.)

Comment 4

[(no longer active)]

Maybe the WMF DLLs don't ship on Windows Server or something?

Comment 5

[Chris Pearce [:cpearce (Not reading bugmail)]]

See also bug 847879, you may also need to install the "Microsoft Windows Media Feature Pack for N and KN Versions of all Windows 8 Editions": 

http://support.microsoft.com/kb/2703761

Can you check the output of DXDiag? If you don't see a section "Media Foundation Transforms" which lists things like "Microsoft H264 Video Decoder MFT" then you don't have the required DLLs, and you may need the feature pack.

Comment 6

[(no longer active)]

Thanks, I finally figured out how to install the WMF stuff, and now everything works perfectly.  Sorry for the false alarm.