The *.webm video format stopped working in IE9?

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Open IE9.
2. Go to any website broadcasting in *.webm video format.
3. Video doesn't play any more.

What is the expected output? What do you see instead?
The "X" sign indicating missing file.

What version are you using? On what Windows version?
Win 7 Ultimate 64 bit.

Please provide any additional information below.

Up till about a few days ago the *.webm video format was working just fine in 
IE9, but now it just stopped. What happened? I went to download and re-install 
the *.webm codec from the Google support page at 
https://tools.google.com/dlpage/webmmf - but no use! I've checked on 3 
different computers, all played the *.webm without any problems before, but now 
they all stopped recognizing this format for no apparent reason. Any idea 
why??? Did Microsoft start blocking this "plugin"?

All 3 computers are independently operated and confirmed the same issue. Now IE 
only plays back the *.mp4 video format on the tested websites. When I clicked 
on the video's "Save As" link, they all indicated the *.mp4 format ONLY, even 
though the *.webm is listed in the code as the first "option", and *.mp4 as the 
fall-back format. 

Meanwhile I checked with a friend from oversea and he said the same. He could 
watch the tested sites in WEBM before but now there is nothing! 

The websites we've tested worked fine with Chrome, but not with IE9. 

Please check out your "plugin" to make sure it starts playing back the WEBM 
format in IE9 again. That's all I've got. Thanks!

If you've got something, please let me know: Ettelirvag@Hotmail.Com

Original issue reported on code.google.com by mrgcl...@gmail.com on 29 Aug 2012 at 9:32

[GoogleCodeExporter]

Please confirm that playback fails at the following URL:

http://www.webmproject.org/detect/

Also, please report any messages about browser support that the page returns. 
Thanks.

Original comment by louquil...@google.com on 29 Aug 2012 at 10:12

• Changed state: Untriaged
• Added labels: Action-FeedbackNeeded, Component-MediaFoundation, OS-Windows

[GoogleCodeExporter]

First that page showed that the browser could not play webm. Then I downloaded 
and installed the webm plugin/codec again, rebooted the computers and then they 
played back that page with the following message: 

"Congratulations! Your browser reports that it can play WebM video. The browser 
responded with: •canPlayType supported? Yes
•WebM video supported? probably"

Now I've checked out a couple of pages that I had a problem watching, but they 
are all the same. They work with Chrome but not with IE9. What does that mean? 
Incorrect WEBM "Mime Type" configuration on those servers? Are there any other 
test sites you can recommend? What to do now? Thanks.

Original comment by mrgcl...@gmail.com on 29 Aug 2012 at 11:17

[GoogleCodeExporter]

Thanks. Few questions:

> First that page showed that the browser could not play webm. Then I
> downloaded and installed the webm plugin/codec again, rebooted the
> computers and then they played back that page with the following
> message:

(We'll assume here that the components re-installed correctly, though it's 
unknown what broke them.)

> "Congratulations! Your browser reports that it can play WebM video.
> The browser responded with: •canPlayType supported? Yes
> •WebM video supported? probably"

* IE9 reported this?
* IE9 plays the video on our page successfully at this point?

> Now I've checked out a couple of pages that I had a problem watching,
> but they are all the same. They work with Chrome but not with IE9.

Chrome doesn't use the components; it should work with any properly-served WebM 
data. Only Windows apps that use Media Foundation are affected by the 
components.

Please provide several example URLs with WebM videos that fail to play in IE9, 
so we can inspect them.

The player at the bottom of the following page is known-good and only offers 
WebM. Does this play in IE9 for you?

http://www.webmfiles.org/demo-files/

Thanks for your help.

Original comment by louquil...@google.com on 30 Aug 2012 at 12:03

[GoogleCodeExporter]

Original comment by albe...@google.com on 30 Aug 2012 at 10:06

• Changed state: Assigned

[GoogleCodeExporter]

Original comment by louquil...@google.com on 25 Jul 2013 at 6:10

• Changed state: Done