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Diffstat (limited to 'doc')
-rw-r--r-- | doc/encoders.texi | 44 |
1 files changed, 27 insertions, 17 deletions
diff --git a/doc/encoders.texi b/doc/encoders.texi index 585eae6..077d465 100644 --- a/doc/encoders.texi +++ b/doc/encoders.texi @@ -420,26 +420,36 @@ Requires the presence of the libmp3lame headers and library during configuration. You need to explicitly configure the build with @code{--enable-libmp3lame}. -@subsection Option Mapping +@subsection Options -The following options are supported by the libmp3lame wrapper, -the LAME-equivalent options follow the FFmpeg ones. +The following options are supported by the libmp3lame wrapper. The +@command{lame}-equivalent of the options are listed in parentheses. -@multitable @columnfractions .2 .2 -@item FFmpeg @tab LAME -@item b @tab b -Set bitrate expressed in bits/s, LAME @code{bitrate} is expressed in -kilobits/s. -@item q @tab V -Set quality setting for VBR. -@item compression_level @tab q -Set algorithm quality. Valid arguments are integers in the 0-9 range. -@item reservoir @tab N.A. -Enable use of bit reservoir. LAME has this enabled by default. -@item joint_stereo @tab -m j +@table @option +@item b (@emph{-b}) +Set bitrate expressed in bits/s for CBR. LAME @code{bitrate} is +expressed in kilobits/s. + +@item q (@emph{-V}) +Set constant quality setting for VBR. This option is valid only +using the @command{ffmpeg} command-line tool. For library interface +users, use @option{global_quality}. + +@item compression_level (@emph{-q}) +Set algorithm quality. Valid arguments are integers in the 0-9 range, +with 0 meaning highest quality but slowest, and 9 meaning fastest +while producing the worst quality. + +@item reservoir +Enable use of bit reservoir when set to 1. Default value is 1. LAME +has this enabled by default, but can be overriden by use +@option{--nores} option. + +@item joint_stereo (@emph{-m j}) Enable the encoder to use (on a frame by frame basis) either L/R -stereo or mid/side stereo. -@end multitable +stereo or mid/side stereo. Default value is 1. + +@end table @section libopencore-amrnb |