can't identify or open unknown file type

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  1. Posts : 135
    Windows 10 PRO
       #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.

    can't identify or open unknown file type-test-capture-1.png
      My Computer


  2. Posts : 297
    Windows 10 - Ver: 20H2 - Build: 19042.804
       #2

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


  3. Posts : 135
    Windows 10 PRO
    Thread Starter
       #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.
      My Computer


  4. Posts : 297
    Windows 10 - Ver: 20H2 - Build: 19042.804
       #4

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


  5. Posts : 2,228
    Windows 11 Pro 64bit
       #5

    I’d check the file out with virustotal: https://www.virustotal.com
      My Computer


  6. Posts : 135
    Windows 10 PRO
    Thread Starter
       #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 Computer


  7. Posts : 35,433
    Win 10 Pro (21H2) (2nd PC is 21H2)
       #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.
      My Computers


  8. Posts : 135
    Windows 10 PRO
    Thread Starter
       #8

    Thanks, dalchina, I appreciate your suggestions.

    - - - Updated - - -

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

    can't identify or open unknown file type-test-capture-2.png
      My Computer


  9. Posts : 212
    windows 10 pro build 21h2
       #9

    also try to redownload the file from somewhere else
      My Computer


  10. Posts : 35,433
    Win 10 Pro (21H2) (2nd PC is 21H2)
       #10

    It installs on my 2 PCs- 1903...
    Download Avidemux latest release
    can't identify or open unknown file type-snap-2019-09-11-18.45.44.png

    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 Computers


 

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