Sound File Reports Wrong Information


  1. Posts : 7
    Windows 10
       #1

    Sound File Reports Wrong Information


    Hi all

    I have a sound file that reports it's only 880k big and 13 seconds long.
    If I pay it in a media player, it's actually a few minutes. I also suspect it isn't actually 880k big as it's around 300kbps. I read VBR songs, if encoded incorrectly, use the first bits of the file to display it's time length.

    Found this: VBRFix new version: Corrects Stream Length bug

    but the program doesn't work, despite it saying it has.

    I have others that report being 30+ minutes but are less than 5.

    Is there anything I can do?
      My Computer

  2. dalchina's Avatar
    Posts : 24,072
    Win 10 Pro (1903)
       #2

    Suggest you upload such a file and provide a link to it..

    Please post a screenshot showing how you see a report of incorrect duration. Thanks.
      My Computers


  3. Posts : 7
    Windows 10
    Thread Starter
       #3

    I zipped the file (attached).
    Right-click and see the properties. However, when you actually play it, the file time length is completely different.
    Sound File Reports Wrong Information Attached Files
      My Computer

  4. Bree's Avatar
    Posts : 15,279
    10 Home x64 (1909) (10 Pro on 2nd pc)
       #4

    SirTophamHatt said:
    I zipped the file (attached).
    Right-click and see the properties. However, when you actually play it, the file time length is completely different.
    File Explorer shows 13 seconds.
    Groove Music plays 13 seconds.
    Audacity opens it and plays 13 seconds.
    FFmpeg shows:
    Code:
     Metadata:
        album           : Kalax
        artist          : Kalax
        genre           : Electronic
        title           : Time Lapse
        track           : 1
        date            : 2017
      Duration: 00:00:13.56, start: 0.023021, bitrate: 539 kb/s
        Stream #0:0: Audio: mp3, 48000 Hz, stereo, s16p, 310 kb/s
    Converting it using FFmpeg to another file make a 13 second long copy.

    Whatever you are playing after the 13 seconds is up is not in this file, somehow it's linking to another when you play it?
      My Computers

  5. dalchina's Avatar
    Posts : 24,072
    Win 10 Pro (1903)
       #5

    This is only 13s long - which player were you using?
    Sound File Reports Wrong Information-snap-2017-06-02-17.07.29.jpg
      My Computers


  6. Posts : 7
    Windows 10
    Thread Starter
       #6

    Hmm.
    Maybe that wasn't the file I was looking at through an audio program.

    However, I have tested this one (attached) and it really does distort the time. However, ran it through the program I linked to and it worked this time.

    Peter Sandberg - Truth.zip

    Will mark as solved though as the program did correct it.
      My Computer


  7. dalchina's Avatar
    Posts : 24,072
    Win 10 Pro (1903)
       #7

    Sound File Reports Wrong Information-snap-2017-06-02-17.18.39.jpg
    That one is different.
    Also very low bit rate and 1 min 40 is short for a song.
      My Computers

  8. Bree's Avatar
    Posts : 15,279
    10 Home x64 (1909) (10 Pro on 2nd pc)
       #8

    SirTophamHatt said:
    However, I have tested this one (attached) and it really does distort the time...
    That one reports 1:58 in Properties, but is actually 1:50 when played. Converting with Ffmpeg gives a copy that's 01:49.82 long. I have seen small discrepancies like this before - a few seconds difference between 'properties' and actual play time, even on some of my own recordings.
      My Computers


  9. Posts : 7
    Windows 10
    Thread Starter
       #9

    Does it report the low kbps because it's a variable bitrate file?
    So that program just looks at the first section and decides it's all the same?
      My Computer

  10. dalchina's Avatar
    Posts : 24,072
    Win 10 Pro (1903)
       #10

    No, that's Windows properties sheet showing 18s, overlaid on the wave editor. 2 different things.

    Sound File Reports Wrong Information-snap-2017-06-02-18.01.04.jpg
    Here you can see it's VBR
    VLC player -> 1min 49.

    If I create a new VBR file from the wave editor, the length is consistently reported ok.

    How was the file created?
      My Computers


 

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