String containing custom MP3 options to send to the Lame encoder.
For advanced users, this string allows applying all of the possible MP3 encoding options available with Lame. See Appendix A - Lame command line for the complete set of available options.
This property is used only if the EncodeFormats.FormatToUse property is set to ENCODING_FORMAT_MP3 and the EncodeFormats.MP3.EncodeMode property is set to MP3_ENCODE_CUSTOM.
IMPORTANT NOTE: As you may know, the Lame command line is as follows:
usage: lame [options] <infile> [outfile]
Contents of the CustomString property are related to the [options] field only so you must omit entering the word lame and omit to specify the <infile> and [outfile] settings also. You should also omit the -r and -x options which are already applied automatically and the --big-endian option which is not compatible with the control.
For further details about encoding in MP3 format refer to the MP3 object section.
For further information about available encoding formats see the EncodeFormats object.