can't identify or open unknown file type

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  1.    #1

    can't identify or open unknown file type

    I have run across some video files that, although tagged as MP4, cannot be played on my VLC player, KM player, or Windows Media Player. File Identifier (File Identifier - Identify unknown files instantly) shows info as attached. Please tell me how to deal with these files so they are usable on my PC.

    Click image for larger version. 

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      My ComputerSystem Spec

  2. sbh7600's Avatar
    Posts : 137
    Windows 10 - Ver: 1809 - Build: 17763.737

    Are you sure it's video files, and not something else misslabled in .xxx
      My ComputerSystem Spec

  3.    #3

    Thanks for your reply, sbh7600...No, I'm not sure of anything about this file other than it was in a series with a lot of other mp4 video files that all opened and played without a problem.
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  4. sbh7600's Avatar
    Posts : 137
    Windows 10 - Ver: 1809 - Build: 17763.737

    If i where you i would delete it. So you don't get infected of some sort! Better safe then sorry.
      My ComputerSystem Spec

  5.    #5

    I’d check the file out with virustotal:
      My ComputerSystem Spec

  6.    #6

    #4 sbh7600...Yea, that's probably the smart thing to do. I did scan the file and it was "clean," but...

    #5 Thanks for the suggestion, Bastet. VirusTotal did it's thing and nothing came up, but when I tried to upload the file, it got hung up at 30%.
      My ComputerSystem Spec

  7.    #7

    Try examining them to see if the codecs needed to play them can be identified. No codecs- probably not valid.
    5 Tools to Determine the Codecs Required To Play Downloaded Movies • Raymond.CC

    How to Determine the Codec Used in a Video or Audio File >> Winhelponline

    But if you're unsure of the source- it can only be a matter of curiosity, so safest to dispose of them.

    Another approach:

    How can I check the integrity of a video file (avi, mpeg, mp4...)? - Super User

    And you could try e.g. Avidemux (free) and see if it can read them.
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  8.    #8

    Thanks, dalchina, I appreciate your suggestions.

    - - - Updated - - -

    To: dalchina..........tried Avidmeux, result window popped up...

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  9. Posts : 50
    windows 10 pro build 1809

    also try to redownload the file from somewhere else
      My ComputerSystem Spec

  10.    #10

    It installs on my 2 PCs- 1903...
    Download Avidemux latest release
    Click image for larger version. 

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    When did the error occur? - when you tried to open your file?

    If it's not a video file (try a valid one..) I suppose anything might happen depending on how well it's written.
      My ComputersSystem Spec

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