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Optimize music files to reach your device’s sound quality limit, get compatible audio format or save disk space.
Audio file converter software for music production and home hi-end Read more...
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AuI ConverteR: mp3 Parameters [Guide]

AuI ConverteR has default mp3 conversion settings to provide better sound quality.

However, you may be need custom settings of mp3 encoding.

Optimize music files
 to reach your device's sound quality limit,
get compatible audio format or save disk space
 
AuI ConverteR 48x44
 audio file converter software
 for music production and discerning music lovers
FLAC, DSF, DFF, SACD ISO, mp3, m4a, CUE, CD...
 
We think about quality. You just work with music.
 since 2011
AuI ConverteR 48x44 - audio converte software
DOWNLOAD FREE
[Windows]
DOWNLOAD FREE
[Mac]

To assign custom bitrate, set desirable parameters in command line of mp3 encoder.

  1. Open Settings > Output formats.
  2. At left upper corner, select Output file format "mp3".
  3. In the field "Output converter command line params" find something like (without quotes):
    - for constant bitrate: "-b:a 320k" ("-ab 320k") or
    - for variable bitrate: "-q:a 9" ("-aq 9").
  4. Replace found parameter to:
    - for constant bitrate: -ab N  (N is desirable bitrate 64k, 128k, 256k, 320k) or
    - for variable bitrate:  -aq M (M is digit from 0 to 9; 9 is maximum sound quality).
AuI ConverteR mp3 output settings

 

EXAMPLES:

Constant bitrate 320k, variant 1

-y -i %inputfile% %metadataartworkfilef% -ab 320k -metadata genre=%genre% -metadata date=%year% -metadata track=%tracknumber% -metadata title=%tracktitle% -metadata album=%album% -metadata artist=%artist% -metadata copyright=%copyright% -metadata TIT3=%description% -metadata album_artist=%albumartist% -metadata publisher=%publisher% -metadata composer=%composer% -metadata performer=%conductor% -metadata TIT1=%groupdescription% -metadata disc=%disknumber% -metadata TKEY=%initialkey% -metadata TBPM=%beatsperminute% -metadata language=%language% -metadata encoder=%encoder% -metadata encoded_by=%encodedby% -id3v2_version 3 -write_id3v1 1 %outputfile%

 

Constant bitrate 320k, variant 2

-y -i %inputfile% %metadataartworkfilef% -b:a 320k -metadata genre=%genre% -metadata date=%year% -metadata track=%tracknumber% -metadata title=%tracktitle% -metadata album=%album% -metadata artist=%artist% -metadata copyright=%copyright% -metadata TIT3=%description% -metadata album_artist=%albumartist% -metadata publisher=%publisher% -metadata composer=%composer% -metadata performer=%conductor% -metadata TIT1=%groupdescription% -metadata disc=%disknumber% -metadata TKEY=%initialkey% -metadata TBPM=%beatsperminute% -metadata language=%language% -metadata encoder=%encoder% -metadata encoded_by=%encodedby% -id3v2_version 3 -write_id3v1 1 %outputfile%

 

Variable bitrate (level 9, maximum sound quality), variant 1

-y -i %inputfile% %metadataartworkfilef% -aq 9 -metadata genre=%genre% -metadata date=%year% -metadata track=%tracknumber% -metadata title=%tracktitle% -metadata album=%album% -metadata artist=%artist% -metadata copyright=%copyright% -metadata TIT3=%description% -metadata album_artist=%albumartist% -metadata publisher=%publisher% -metadata composer=%composer% -metadata performer=%conductor% -metadata TIT1=%groupdescription% -metadata disc=%disknumber% -metadata TKEY=%initialkey% -metadata TBPM=%beatsperminute% -metadata language=%language% -metadata encoder=%encoder% -metadata encoded_by=%encodedby% -id3v2_version 3 -write_id3v1 1 %outputfile%

 

Variable bitrate (level 9, maximum sound quality), variant 2

-y -i %inputfile% %metadataartworkfilef% -q:a 9 -metadata genre=%genre% -metadata date=%year% -metadata track=%tracknumber% -metadata title=%tracktitle% -metadata album=%album% -metadata artist=%artist% -metadata copyright=%copyright% -metadata TIT3=%description% -metadata album_artist=%albumartist% -metadata publisher=%publisher% -metadata composer=%composer% -metadata performer=%conductor% -metadata TIT1=%groupdescription% -metadata disc=%disknumber% -metadata TKEY=%initialkey% -metadata TBPM=%beatsperminute% -metadata language=%language% -metadata encoder=%encoder% -metadata encoded_by=%encodedby% -id3v2_version 3 -write_id3v1 1 %outputfile%

 

Read more information about ffmpeg mp3 bitrate settings

 

Tutorials

February 1, 2023 updated | since January 30, 2021