IE9 not playing HTML5 videos on test public web pages, but plays from a local HTML file


  • Hello all

    I've searched for this issue both on SO and here on MS Forum. I know there are plenty of questions and scenarios related to IE and HTML5 videos.

    At this MS Forum thread I've found the scenario closest to mine.

    I'm running IE9 on Windows 7 64 bit machine, all updated by Windows Update.

    1) If I open M4V and MP4 files on my HD into IE, the Quicktime plugin kicks in and plays the video.

    2) If I create an HTML test page with those videos as HTML5 videos, and I open that page as a file on my HD into IT, IE plays videos correctly.

    3) If I load that same HTML page from my local ISS web server, with additional MIME types properly configured, IE is not able to play the videos. It just shows the black rectangle with red cross at the center.
    Binding onerror JS handler, the error code I get is MEDIA_ERR_SRC_NOT_SUPPORTED (which from some source I got it means "The video could not be loaded, either because the server or network failed or because the format is not supported"). Other browsers work and they show that MIME type in server response is correct (video/mp4 for MP4).

    4) If I load that same HTML page from a hosted web space, same as local web server. IE is not able to play. Black box, red cross. Same error code. Other browsers work and MIME type is correct. 
    If I try from another machine with same O.S. version, same IE9 version, but other PC manufacturer, that other machine's IE is able to play.

    5) If I load any of a number of publicly available HTML5 Video test pages (see list at the bottom), IE is not able to play the MP4 video (forget the others). Usually the video shows as black rectangle without red cross. Sometimes it shows the play control button, but nothing happens when clicked.

    My considerations:

    #2 leads me to think that IE9 is able to play those particular MP4 / M4V I got, so those should not be corrupted. Some of them are custom-made. Others are taken from public available samples (e.g. now-famous big bunny), which are supposed to be not corrupted.

    #3 and 4 might suggest that there could be some problems with my local server, or with hosting provider. Fiddler, on other browsers, reports correct MIME types in server response. And then from another machine the hosted page works fine.

    Anyway, then there's #5: Test page servers are correctly configured. So it's not a matter of server. It should something on this IE9 on my machine.

    Any suggestion on how to solve this?

    Ref: Public video test pages:

    Wednesday, December 5, 2012 7:13 PM

All replies

  • I checked Internet Options for Activex, security zones, enable alternative codecs for HTML5, ... They are all setup fine.

    For one thing, if I turn on Network profiling in web developer tools, I cannot see any video-related resource being requested. E.g. on I get this screenshot:

    • Edited by GiUmaTo Wednesday, December 5, 2012 7:25 PM added test
    Wednesday, December 5, 2012 7:17 PM
  • Any info anyone?

    Friday, December 14, 2012 12:49 PM
  • I have the same issue with IE9. The video file isn't requested from the server. Red "X" is shown. Have you solved this issue in the meantime?
    Friday, April 12, 2013 12:38 PM
  • The video file isn't requested from the server.

    What does Developer Tools show?

    BTW is this only about IE9?  The OP's examples seem Ok in IE10, except for the last which contains a 404 and this shows in the Console tab


    Video Error[object Object] 



    I didn't bother checking if the two were related.


    Robert Aldwinckle

    Saturday, April 13, 2013 12:05 AM
  • I found out, that it's working for a standard user account but NOT for an account with admin rights (no video file request in the Developer Tools). Weird.

    BUT: after resetting my user profile... it's working for an admin user too.

    • Edited by ThiloL Monday, April 15, 2013 8:02 AM
    Monday, April 15, 2013 8:01 AM
  • Problem solved!

    It was a policy which disabled videos in websites. Hard to find.

    Thanks, Thilo

    Monday, April 15, 2013 10:37 AM
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