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doc/encoders: reformat and add some clarification in libtwolame doc

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Signed-off-by: Timothy Gu <timothygu99@gmail.com>
Signed-off-by: Stefano Sabatini <stefasab@gmail.com>
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Timothy Gu 2013-08-03 16:55:40 -07:00 committed by Stefano Sabatini
parent 40b8350b57
commit e45e72f5f8
1 changed files with 29 additions and 27 deletions
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doc/encoders.texi
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@ -496,24 +496,26 @@ Requires the presence of the libtwolame headers and library during
configuration. You need to explicitly configure the build with configuration. You need to explicitly configure the build with
@code{--enable-libtwolame}. @code{--enable-libtwolame}.
@subsection Options Mapping @subsection Options
The following options are supported by the libtwolame wrapper. The The following options are supported by the libtwolame wrapper. The
TwoLAME-equivalent options follow the FFmpeg ones and are in @command{twolame}-equivalent options follow the FFmpeg ones and are in
parentheses. parentheses.
@table @option @table @option
@item b @item b (@emph{-b})
(b) Set bitrate in bits/s. Note that FFmpeg @code{b} option is Set bitrate expressed in bits/s for CBR. @command{twolame} @option{b}
expressed in bits/s, twolame @code{b} in kilobits/s. The default option is expressed in kilobits/s. Default value is 128k.
value is 128k.
@item q @item q (@emph{-V})
(V) Set quality for experimental VBR support. Maximum value range is Set quality for experimental VBR support. Maximum value range is
from -50 to 50, useful range is from -10 to 10. from -50 to 50, useful range is from -10 to 10. The higher the
value, the better the quality. This option is valid only using the
@command{ffmpeg} command-line tool. For library interface users,
use @option{global_quality}.
@item mode @item mode (@emph{--mode})
(mode) Set MPEG mode. Possible values: Set the mode of the resulting audio. Possible values:
@table @samp @table @samp
@item auto @item auto
@ -528,26 +530,26 @@ Dual channel
Mono Mono
@end table @end table
@item psymodel @item psymodel (@emph{--psyc-mode})
(psyc-mode) Set psychoacoustic model to use in encoding. The argument Set psychoacoustic model to use in encoding. The argument must be
must be an integer between -1 and 4, inclusive. The higher the value, an integer between -1 and 4, inclusive. The higher the value, the
the better the quality. The default value is 3. better the quality. The default value is 3.
@item energy_levels @item energy_levels (@emph{--energy})
(energy) Enable energy levels extensions when set to 1. The default Enable energy levels extensions when set to 1. The default value is
value is 0 (disabled). 0 (disabled).
@item error_protection @item error_protection (@emph{--protect})
(protect) Enable CRC error protection when set to 1. The default value Enable CRC error protection when set to 1. The default value is 0
is 0 (disabled). (disabled).
@item copyright @item copyright (@emph{--copyright})
(copyright) Set MPEG audio copyright flag when set to 1. The default Set MPEG audio copyright flag when set to 1. The default value is 0
value is 0 (disabled). (disabled).
@item original @item original (@emph{--original})
(original) Set MPEG audio original flag when set to 1. The default Set MPEG audio original flag when set to 1. The default value is 0
value is 0 (disabled). (disabled).
@end table @end table