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author | Timothy Gu <timothygu99@gmail.com> | 2013-06-02 03:26:03 +0400 |
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committer | Timothy Gu <timothygu99@gmail.com> | 2013-08-26 20:19:35 +0400 |
commit | c87f3c3ab4c541dd05c26cb5669cfaa998335ea5 (patch) | |
tree | ecafa82eb541b11b5953c95d9a4b2b30df5e7e0d /doc/encoders.texi | |
parent | 8f07c09b207b651a18274827f95ee0a9a61048a4 (diff) |
doc/encoders: add documentation for libtwolame
(cherry picked from commit ea038b996d5662702b2247a6aa919dee1cebc0be)
Signed-off-by: Timothy Gu <timothygu99@gmail.com>
Diffstat (limited to 'doc/encoders.texi')
-rw-r--r-- | doc/encoders.texi | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/doc/encoders.texi b/doc/encoders.texi index dc79e517a0..74f3c2fda8 100644 --- a/doc/encoders.texi +++ b/doc/encoders.texi @@ -441,6 +441,69 @@ Enables the the encoder to use (on a frame by frame basis) either L/R stereo or mid/side stereo. @end multitable +@section libtwolame + +TwoLAME MP2 encoder wrapper + +Requires the presence of the libtwolame headers and library during +configuration. You need to explicitly configure the build with +@code{--enable-libtwolame}. + +@subsection Options Mapping + +The following options are supported by the libtwolame wrapper. The +TwoLAME-equivalent options follow the FFmpeg ones and are in +parentheses. + +@table @option +@item b +(b) Set bitrate in bits/s. Note that FFmpeg @code{b} option is +expressed in bits/s, twolame @code{b} in kilobits/s. The default +value is 128k. + +@item q +(V) Set quality for experimental VBR support. Maximum value range is +from -50 to 50, useful range is from -10 to 10. + +@item mode +(mode) Set MPEG mode. Possible values: + +@table @samp +@item auto +Choose mode automatically based on the input. This is the default. +@item stereo +Stereo +@item joint_stereo +Joint stereo +@item dual_channel +Dual channel +@item mono +Mono +@end table + +@item psymodel +(psyc-mode) Set psychoacoustic model to use in encoding. The argument +must be an integer between -1 and 4, inclusive. The higher the value, +the better the quality. The default value is 3. + +@item energy_levels +(energy) Enable energy levels extensions when set to 1. The default +value is 0 (disabled). + +@item error_protection +(protect) Enable CRC error protection when set to 1. The default value +is 0 (disabled). + +@item copyright +(copyright) Set MPEG audio copyright flag when set to 1. The default +value is 0 (disabled). + +@item original +(original) Set MPEG audio original flag when set to 1. The default +value is 0 (disabled). + +@end table + @c man end AUDIO ENCODERS @chapter Video Encoders |