Setting mp3/Lame settings in Rhythmbox

[grimdestripador]

After doing a google search on the keyterms: lame, name=enc, cbr
the first result is how your shouldent be using CBR

For best results regarding sound quality and compression ratio you shouldn't use CBR encoding at all but VBR (variable bitrate) instead. More info about recommended lame settings can be found here:

http://wiki.hydrogenaudio.org/index.php ... r_Settings

I use and recommend following pipeline:

audio/x-raw-int,rate=44100,channels=2 ! lame name=enc vbr=4 vbr-quality=2 ! xingmux ! id3v2mux

This is equivalent for lame command line switch -V 2 --vbr-new.

If you want to change the encoding settings you can go to to preferences and edit the profiles (GStreamer pipeline). For mp3 profile it looks like this:

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audio/x-raw-int,rate=44100,channels=2 ! lame name=enc mode=0 vbr-quality=6 ! id3v2mux

To direct it to create 128 kbps / joint stereo instead of the default mode alter the line to:

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audio/x-raw-int,rate=44100,channels=2 ! lame name=enc mode=1 bitrate=128 ! id3v2mux

or to use the presets instead:

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audio/x-raw-int,rate=44100,channels=2 ! lame name=enc preset=standard ! id3v2mux

To see what options are available just go to console and execute:

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gst-inspect lame

This command will write all options that are available for lame and its valid values.