some MP4s don't play in WMP

  1. Posts : 106
    Windows 10(64) Home

    some MP4s don't play in WMP

    Hi. I have a CCTV MP$ it will not play with WMP but does with others like VLC. It is 1920 x 1080 60hz as reported on my CCTV system. should change the resolution or is there another way?

    I tried to attach the jpg but it keeps failing so it is here
    Last edited by otuatail; 23 Jun 2023 at 04:23.
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  2. Posts : 3,529
    Windows 10 Pro 64-bit 21H1 (May 2021 build 19043.1083)

    You probably need some codecs (audio/video coders/decoders) to play your video in Windows Media Player or other software. VLC has its own embedded codecs so it can play it without installing external codecs. The best codec collection than plays everything is K-Lite codecs found here: K-Lite Codec Pack 17.6.6 Free Download The standard pack should be OK, but I always prefer the Mega pack to have all codecs, Media Player Classic and more stuff.
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  3. Posts : 106
    Windows 10(64) Home
    Thread Starter

    Okay. I downloded the codec. It runs fine now. Does it link into WMP or does WMP look for compatable softare on the PC?
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  4. Posts : 1,855
    Windows 10 Pro (+ Windows 10 Home VMs for testing)

    Your screenshot shows the video is encoded using x265, a fairly recent highly-compressed HEVC format. which WMP doesn't understand by default.

    IMO you have two options:

    1. Use the 'Video Encoding' dropdown shown in your screenshot to see if you can use the slightly older x264 format which is still compressed but uses the older AVC format that WMP understands.

    2. Alternatively, add the HEVC codecs to Windows 10. The HEVC codecs are no longer available for free on the Microsoft Store; they now cost 0.79/$0.99.

    some MP4s don't play in WMP-hevc_codecs_from_ms_store.png

    (HEVC codecs were also available for free as APPX packages from but I notice the download links have now been removed due to a DMCA complaint.

    I haven't found an alternative download location for the latest (24 Jan 2023) APPX installs:

    Microsoft.HEVCVideoExtension_2.0.61591.0_x64__8wekyb3d8bbwe.appx - 64-bit
    Microsoft.HEVCVideoExtension_2.0.61591.0_x32__8wekyb3d8bbwe.appx - 32-bit

    As a result I'll have to rely on the slightly earlier (19 Jan 2023) versions I downloaded:


    These are still very much newer than the HEVC extensions available from the MS store which, if you scroll down to the product info, appear to be from 2018.)

    Hope this helps...

    EDIT: Oops... looks like I hit 'Submit' just a little too late. Glad you got it sorted.
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  5. Posts : 9,780
    Mac OS Catalina

    I would use VLC, Microsoft has not kept up on Zume or WMP.
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  6. Posts : 18,034
    Win 10 Pro 64-bit v1909 - Build 18363 Custom ISO Install

    bro67 said:
    I would use VLC, Microsoft has not kept up on Zume or WMP.

    VLC pretty much plays ANYTHING that you throw at it.
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  7. Posts : 3,529
    Windows 10 Pro 64-bit 21H1 (May 2021 build 19043.1083)

    A free way to watch h.265 videos is installing the x265vfw codec: x265vfw 3.50 Free Download - VideoHelp
    This is included in K-Lite vodev pack, see me previous post.
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