AuI ConverteR: mp3 Parameters [Guide]

Tutorials

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

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

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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).

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

January 30, 2021 updated | since January 30, 2021