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author | James Zern <jzern@google.com> | 2011-05-27 16:31:59 -0700 |
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committer | Michael Niedermayer <michaelni@gmx.at> | 2011-05-29 00:32:26 +0200 |
commit | 011b098cd0ae7296651d36ae7da400d5d04337c3 (patch) | |
tree | cc889e2e91fc19d307a87983f065acf64e62b013 | |
parent | 9222dddb448789b138a106ed677f3c628c85a840 (diff) | |
download | ffmpeg-011b098cd0ae7296651d36ae7da400d5d04337c3.tar.gz |
doc: correct AC-3 option subsection placement
Floating-Point-Only section was added after the video encoders chapter
in 034fc7b merge.
-rw-r--r-- | doc/encoders.texi | 88 |
1 files changed, 43 insertions, 45 deletions
diff --git a/doc/encoders.texi b/doc/encoders.texi index 9b5c2af008..f21f8ffd82 100644 --- a/doc/encoders.texi +++ b/doc/encoders.texi @@ -369,6 +369,49 @@ is highly recommended that it be left as enabled except for testing purposes. @end table +@subsection Floating-Point-Only AC-3 Encoding Options + +These options are only valid for the floating-point encoder and do not exist +for the fixed-point encoder due to the corresponding features not being +implemented in fixed-point. + +@table @option + +@item -channel_coupling @var{boolean} +Enables/Disables use of channel coupling, which is an optional AC-3 feature +that increases quality by combining high frequency information from multiple +channels into a single channel. The per-channel high frequency information is +sent with less accuracy in both the frequency and time domains. This allows +more bits to be used for lower frequencies while preserving enough information +to reconstruct the high frequencies. This option is enabled by default for the +floating-point encoder and should generally be left as enabled except for +testing purposes or to increase encoding speed. +@table @option +@item -1 +@itemx auto +Selected by Encoder (default) +@item 0 +@itemx off +Disable Channel Coupling +@item 1 +@itemx on +Enable Channel Coupling +@end table + +@item -cpl_start_band @var{number} +Coupling Start Band. Sets the channel coupling start band, from 1 to 15. If a +value higher than the bandwidth is used, it will be reduced to 1 less than the +coupling end band. If @var{auto} is used, the start band will be determined by +the encoder based on the bit rate, sample rate, and channel layout. This option +has no effect if channel coupling is disabled. +@table @option +@item -1 +@itemx auto +Selected by Encoder (default) +@end table + +@end table + @c man end AUDIO ENCODERS @chapter Video Encoders @@ -433,48 +476,3 @@ For more information about libx264 and the supported options see: @url{http://www.videolan.org/developers/x264.html} @c man end VIDEO ENCODERS - -@subheading Floating-Point-Only AC-3 Encoding Options - -These options are only valid for the floating-point encoder and do not exist -for the fixed-point encoder due to the corresponding features not being -implemented in fixed-point. - -@table @option - -@item -channel_coupling @var{boolean} -Enables/Disables use of channel coupling, which is an optional AC-3 feature -that increases quality by combining high frequency information from multiple -channels into a single channel. The per-channel high frequency information is -sent with less accuracy in both the frequency and time domains. This allows -more bits to be used for lower frequencies while preserving enough information -to reconstruct the high frequencies. This option is enabled by default for the -floating-point encoder and should generally be left as enabled except for -testing purposes or to increase encoding speed. -@table @option -@item -1 -@itemx auto -Selected by Encoder (default) -@item 0 -@itemx off -Disable Channel Coupling -@item 1 -@itemx on -Enable Channel Coupling -@end table - -@item -cpl_start_band @var{number} -Coupling Start Band. Sets the channel coupling start band, from 1 to 15. If a -value higher than the bandwidth is used, it will be reduced to 1 less than the -coupling end band. If @var{auto} is used, the start band will be determined by -the encoder based on the bit rate, sample rate, and channel layout. This option -has no effect if channel coupling is disabled. -@table @option -@item -1 -@itemx auto -Selected by Encoder (default) -@end table - -@end table - -@c man end AUDIO ENCODERS |