How can I play MPEG-4 videos with Windows Media Player?
Question by Craig /
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When I burn recordings from my CCTV system to CD it burns the video in MPEG-4 format. The MPEG-4 does not open with Windows Media Player.

Problem is I have to provide a CD to a third party which must play the recording back in Windows Media Player!

What is the best way to do this?

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Answers (22)
  • Angel

    Klite Codec did the job thank you!

  • Blue Heeler

    I had the same difficulty but found a very small and free download,called DS decoder from which installed very easily and which then allowed me to play my MP4 video with sound files in Windows Media Player without any hassle. Alternately, MP4 files also play in a DivX player but, in mine, without sound, lower picture quality and less controllability. Good luck

  • Rahul Singh Rathaure

    I think Latest version of Windows Media Player support MP4 format.
    You can update your WMP.
    Now Latest version of WMP is WMP 11 for XP and 12 for Windows 7.

  • DiamondR

    Love to read the various answers which clue me into other resources. This is one of my grrr!!! MSFT issues, WMP not taking MP4, I always end up going to Microsoft, which, believe it or not, has IMHO the best answer - bottom line answer:

    You CAN PLAY BACK .mp4 media files in Windows Media Player when you install DirectShow-compatible MPEG-4 decoder packs.

    Here's the poop:

    MPEG-4 (.mp4)
    MPEG-4 is an International Standards Organization (ISO) specification that covers many aspects of multimedia presentation including compression, authoring and delivery. Although video compression and file container definition are two separate and independent entities of the MPEG-4 specification, many people incorrectly believe that the two are interchangeable. You can implement only portions of the MPEG-4 specification and remain compliant with the standard.

    The MPEG-4 file format, as defined by the MPEG-4 specification, contains MPEG-4 encoded video and Advanced Audio Coding (AAC)-encoded audio content. It typically uses the .mp4 extension. Windows Media Player does not support the playback of the .mp4 file format.

    You can play back .mp4 media files in Windows Media Player when you install DirectShow-compatible MPEG-4 decoder packs. DirectShow-compatible MPEG-4 decoder packs include the Ligos LSX-MPEG Player and the EnvivioTV.

    For more information about the Ligos LSX-MPEG Player, visit the following Ligos Web site: (
    For more information about EnvivioTV , visit the following Envivio Web site: (
    Microsoft has chosen to implement the video compression portion of the MPEG-4 standard. Microsoft has currently produced the following MPEG-4-based video codecs:

    * Microsoft MPEG-4 v1
    * Microsoft MPEG-4 v2
    * Microsoft MPEG-4 v3
    * ISO MPEG-4 v1

    MPEG-4 video content can be encoded and stored in an .asf file container by using Windows Media Tools and Windows Media Encoder. You can then play these files in Windows Media Player. For more information about Microsoft and MPEG-4 support, visit the following Microsoft Web site: (

  • Mayank

    Just Want To Say That, There Are Two Ways Playing A MPEG-4 Video Format.

    1) Changing Format ( Using Format Factory - )
    2) Using Codecs - KLite Codec Pack (Best)

    There's None Other Way To Play MPEG-4 Format In WMP.

  • Kiril

    my windows media player has no problem playing mpeg-4 files. however, i am not sure what i did to make it so.

    i have ffdshow installed as my codec (and am surprised that no one has mentioned it yet). also, it's windows media player on windows 7, so it is possible that they changed something in the windows 7 release.

  • Dave

    ps. VLC doesn't play Blu-Ray (yet).

  • Dave

    This doesn't actually answer the question about playing the file in WMP, but as an alternative, you may want to consider using VLC (

    It has all those codecs built into it. I've decided that it's my media player of choice--both video and audio.

    • Mayank

      His Problem is He Wants To Play Videos Of Format MPEG-4 with WMP.
      But WMP Dosn't Support MPEG-4 Format.

      So The Correct Solution Would Be Just Convert The Video Into Some Other Format Supported By WMP.

    • Dave

      That's why I prefaced my comment with what I did.

      But if the real question is how do I play the files, then VLC is a very good solution. If the the OP really has to play it in WMP, then using the correct CODEC seems much better than converting the file.

  • Mayank

    If The main Solution Is To Change The Format Than I Would Recommend A Great Software Which Is Free And 100% Would Help You To Convert Your Videos Into Any Format You Like...

    Software Name - Format Factory
    HomePage -
    Download Link -

    I Hope It Helped You....
    And The Software Is 100% Virus-Free.
    If Detected, They Are False Positive.

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