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Quirky dMC bit depth behavior

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  • pw0p0

    • Apr 2013
    • 20

    Quirky dMC bit depth behavior

    Opening up dBpoweramp Configuration > selecting Codecs tab > selecting "Advanced Options" > going to "Decoder Options" > "m4a / mp4 Decoder" > setting Output (AAC) to X bit, where X is 16, 24 or 32, has the unusual consequence of dBpoweramp to be reporting the same bit depth of every m4a file I select! (e.g. set Output (AAC) to 24 bit, now open up Properties of any m4a file and go to Audio Properties, and check Sample Size).

    Isn't bit depth a property of the file and not of the decoder? While the output can be set to a higher bit depth than that of the file, if the file's bit depth is 16 bit, it doesn't magically turn it into 24 bit simply by setting the decoder to a higher bit depth.
  • Spoon
    Administrator
    • Apr 2002
    • 44574

    #2
    Re: Quirky dMC bit depth behavior

    No, for lossy codecs such as mp3 they are able to decode to any bit depth, these codecs are bit depth independent.
    Spoon
    www.dbpoweramp.com

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    • pw0p0

      • Apr 2013
      • 20

      #3
      Re: Quirky dMC bit depth behavior

      Wouldn't it be a better policy, then, to disable showing Sample Size in Audio Properties for files that are encoded with lossy codecs?

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      • Spoon
        Administrator
        • Apr 2002
        • 44574

        #4
        Re: Quirky dMC bit depth behavior

        Yes, this will happen for R15
        Spoon
        www.dbpoweramp.com

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