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How do I set Nero AAC/MP4 quality under VBR to .4?

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  • EliC
    dBpoweramp Guru

    • May 2004
    • 1175

    How do I set Nero AAC/MP4 quality under VBR to .4?

    How do I set Nero AAC/MP4 quality under VBR to .4?
    I can choose .35(~100) or .45(~150), but I would like to set .4.
  • Spoon
    Administrator
    • Apr 2002
    • 44509

    #2
    Re: How do I set Nero AAC/MP4 quality under VBR to .4?

    You would have to create your own command line with the CLI encoder.
    Spoon
    www.dbpoweramp.com

    Comment

    • Sardonyx

      • Jun 2011
      • 10

      #3
      Re: How do I set Nero AAC/MP4 quality under VBR to .4?

      1: Close dbpa
      2: Browse to the folder \dBpoweramp\encoder\m4a Nero (AAC) and open the file encoder.txt in Notepad.

      under the section [radio&slider] you will see

      Quality .05 (estimated bit rate: 16 Kbps)
      -q .05
      Quality .15 (estimated bit rate: 32 Kbps)
      -q .15
      Quality .25 (estimated bit rate: 64 Kbps)
      -q .25
      Quality .35 (estimated bit rate: 100 Kbps)
      -q .35
      Quality .45 (estimated bit rate: 150 Kbps)
      -q .45
      Quality .5 (estimated bit rate: 170 Kbps)
      -q .5
      Quality .55 (estimated bit rate: 200 Kbps)
      -q .55
      Quality .65 (estimated bit rate: 250 Kbps)
      -q .65
      Quality .75 (estimated bit rate: 300 Kbps)
      -q .75
      Quality .85 (estimated bit rate: 350 Kbps)
      -q .85
      Quality .95 (estimated bit rate: 400 Kbps)
      -q .95
      Quality 1.00 (estimated bit rate: 425 Kbps)
      -q 1.00

      you can insert a new option for any other setting of quality XX by inserting the lines

      Quality .XX
      -q .XX

      So in your case, that is q .40.
      The line Quality .45 (estimated bit rate: 150 Kbps) --or whatever it is-- is just the text string that shows in the GUI as you move the slider. The -q XX is the parameter that gets passed to the encoder.

      3: Save encoder.txt
      4. open dbpa and enjoy.

      {Pats self on back for knowing something Spoon doesn't} :D
      I thought encoder.txt would be a readme, so I opened it up and thought hmm.. those look like parameters. Made backups and started playing around. When I had a phone with 4GB storage, I used .35 with .4 on some stuff that didn't sound quite right. I have come to the conclusion small changes in bitrate are pointless, except for experimenting. I now listen to -q=.65, and if I found something that sounds bad there, I would go to my FLAC archive & encode it to .75 or .85 rather than trying to find the "just right" setting. I did a reinstall a while back & ditched my custom encoder.txt

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