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WAV to WMA lossless conversion

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  • charlesb

    • Nov 2010
    • 8

    WAV to WMA lossless conversion

    I'm sorry if my question was already posted but I didn't find any related topic.

    I have converted some lossless WAV files (44,1 khz / 16-bit / stereo) to WMA 9.2 lossless format (with same sample rate and bitdepth). Sometimes, when I check the 'verify audio' option, the later fails and there is the error message "Error audio file failed verification".

    In order to understand why the verification fails, I have converted back WMA files to WAV. I have compared initial WAV files and new WAV files : the uncompressed data are unchanged, except for the extreme end of the data where very few bytes (around 20 or 30, it depends on the input file) are lost.

    I guess dozens of bytes are insignificant compared with the entire audio file, but lossless is lossless, so any idea what is the problem ?
  • Spoon
    Administrator
    • Apr 2002
    • 44574

    #2
    Re: WAV to WMA lossless conversion

    It is a bug in the WMA decoder, it was reported to Microsoft 4 years ago....sad I know.
    Spoon
    www.dbpoweramp.com

    Comment

    • charlesb

      • Nov 2010
      • 8

      #3
      Re: WAV to WMA lossless conversion

      Niiiice :D

      Thank you for your answer anyway !

      Comment

      • Spoon
        Administrator
        • Apr 2002
        • 44574

        #4
        Re: WAV to WMA lossless conversion

        BTW Microsofts own products do not seem effected by this bug, just anyone using their SDK (everyone else) to decode WMA files. Even their example code produces the bug.
        Spoon
        www.dbpoweramp.com

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