Where can I find the proper codec to play my mp4 files?

Katie B March 14, 2014
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Hi there, recently I’ve discovered the problem in Windows 7 on my TOSHIBA laptop.
It won’t let me play videos stored onto it, as it comes up with this message: “Windows Media Player cannot play the file. The Player might not support the file type or might not support the codec that was used to compress the file.”
Everything else such as pictures and music work perfectly, it’s literally just the videos. I’ve only tried mp4 files, but I don’t see how that would change as it’s the codec that’s missing. Films work fine, I have tested it.
The actual Windows help page is no use whatsoever; it tells me I can download them from the Internet, but it doesn’t tell me where. I’ve tested out a couple third party codec packs – I don’t really trust them, but I had no choice – but still nothing.
Has anyone got a solution to this?! This is really stressing me out. I’ve got to do a few editing sample works for collage, but I can’t as even Premiere Elements 12 won’t open them.

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  1. Anthony Riddle
    March 23, 2014 at 4:26 am

    Install VLC and then you won't ever have to worry about hunting down codecs anymore. It plays absolutely anything.

    • Katie B
      March 23, 2014 at 2:41 pm

      Thank you!! It actually works!! Even on Adobe Premiere!! You have no idea how much this has saved me, as VLC was already on my computer it weirdly didn't work at first, so I had to re-install it and now it does :)

    • Anthony Riddle
      March 24, 2014 at 8:17 am

      Glad I could help you out. VLC is my go to media player on any operating system. It works on Windows, Mac, Linux, Android, and iOS. I've yet to find a video format that it can't play. Also, if you've ever noticed that some videos have video and audio that aren't quite in sync, VLC has a way to match them up. I forgot how to do it, but a quick google search will uncover the way if you ever need to do that.

  2. Ferri Y
    March 16, 2014 at 11:34 am

    Try KLite Mega Codec pack, I always use that codec to multimedia

    when u install it, please select profile lot of stuff at the first page. then just press next till the end. it save u time to search better codec or actual codec for ur media file.. it have all codec pack in one program

  3. Rajaa C
    March 16, 2014 at 2:51 am

    I'll suggest a bit different approach as it seems you have already tried a lot of codec packs to no avail. Why don't you use a video trans-coder / converter like HandBrake from http://handbrake.fr/ and convert the video file to a compatible format that Windows 7 windows media player will understand. You can even convert your existing mp4 to another mp4 but with compatible fps, audio and video codec. There are already lot of pre-defined output template defined within HandBrake. Hope it resolves your issue. :)

  4. Mohammad Hamzani S
    March 14, 2014 at 8:00 am

    i always use klite mega codec pack here the link. http://www.filehippo.com/download_klite_mega_codec/15199/

    when u install it, please select profile lot of stuff at the first page. then just press next till the end. it save u time to search better codec or actual codec for ur media file.. it have all codec pack in one program

  5. Hovsep A
    March 14, 2014 at 6:25 am

    I was able to play mp4 on windows 7
    File types supported by Windows Media Center
    http://windows.microsoft.com/en-us/windows/file-types-supported-media-center#1TC=windows-7

    you can try to see if vlc can play it for you, if not maybe mp4 files are corrupted?

    The VLC Media Player – Does it Really Play Everything?
    http://www.makeuseof.com/tag/vlc-media-player-play/

  6. Ferdinan S
    March 14, 2014 at 4:22 am

    I'm strongly recommend you use klmcodec

  7. Marcus P
    March 14, 2014 at 2:14 am

    Better yet, and I'll say that this works pretty well because I've used it on my Toshiba with no problems - you could try getting hold of Sharks007 from majorgeeks at http://www.majorgeeks.com/files/details/win7codecs.html

    That said, you mention you've tried some third party codecs but to no avail, however, you've neglected to tell us where those codecs came from and what their downloaded filenames were - this would have helped to narrow down a more promising array of choices for you perhaps, but I've gone with the best one based on personal experience with Toshiba and Windows.

    • Katie B
      March 14, 2014 at 4:15 pm

      I'll give it a go, and the ones I've used are CCCP, Media Player Codec Pack (from CNET) and the K-Lite Codec Pack.

  8. Bruce E
    March 14, 2014 at 12:40 am

    You can download MediaInfo to find out what codec is required for the files in question. It will normally provide a button to the proper codec for the file. Or you could install a codec pack from http://www.codecguide.com/. If it isn't in their Mega pack, it must be quite obscure.

    • Katie B
      March 14, 2014 at 7:44 am

      Thanks, but I downloaded the mp4/windows media codecs along with the mp3 files, but it still won't work as the video now comes up with this message "Windows Media Player encountered a problem while playing the file."

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