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doc/filters: move mpdecimate doc to a more appropriate position.

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Clément Bœsch 2013-04-14 15:57:37 +02:00
parent 7a92ec93c6
commit 458d956b09
1 changed files with 39 additions and 38 deletions
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doc/filters.texi
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@ -2423,44 +2423,6 @@ Set whether or not chroma is considered in the metric calculations. Default is
@code{1}.
@end table
@section mpdecimate
Drop frames that do not differ greatly from the previous frame in
order to reduce frame rate.
The main use of this filter is for very-low-bitrate encoding
(e.g. streaming over dialup modem), but it could in theory be used for
fixing movies that were inverse-telecined incorrectly.
A description of the accepted options follows.
@table @option
@item max
Set the maximum number of consecutive frames which can be dropped (if
positive), or the minimum interval between dropped frames (if
negative). If the value is 0, the frame is dropped unregarding the
number of previous sequentially dropped frames.
Default value is 0.
@item hi
@item lo
@item frac
Set the dropping threshold values.
Values for @option{hi} and @option{lo} are for 8x8 pixel blocks and
represent actual pixel value differences, so a threshold of 64
corresponds to 1 unit of difference for each pixel, or the same spread
out differently over the block.
A frame is a candidate for dropping if no 8x8 blocks differ by more
than a threshold of @option{hi}, and if no more than @option{frac} blocks (1
meaning the whole image) differ by more than a threshold of @option{lo}.
Default value for @option{hi} is 64*12, default value for @option{lo} is
64*5, and default value for @option{frac} is 0.33.
@end table
@section delogo
Suppress a TV station logo by a simple interpolation of the surrounding
@ -4361,6 +4323,45 @@ mp=eq2=1.0:2:0.5
See also mplayer(1), @url{http://www.mplayerhq.hu/}.
@section mpdecimate
Drop frames that do not differ greatly from the previous frame in
order to reduce frame rate.
The main use of this filter is for very-low-bitrate encoding
(e.g. streaming over dialup modem), but it could in theory be used for
fixing movies that were inverse-telecined incorrectly.
A description of the accepted options follows.
@table @option
@item max
Set the maximum number of consecutive frames which can be dropped (if
positive), or the minimum interval between dropped frames (if
negative). If the value is 0, the frame is dropped unregarding the
number of previous sequentially dropped frames.
Default value is 0.
@item hi
@item lo
@item frac
Set the dropping threshold values.
Values for @option{hi} and @option{lo} are for 8x8 pixel blocks and
represent actual pixel value differences, so a threshold of 64
corresponds to 1 unit of difference for each pixel, or the same spread
out differently over the block.
A frame is a candidate for dropping if no 8x8 blocks differ by more
than a threshold of @option{hi}, and if no more than @option{frac} blocks (1
meaning the whole image) differ by more than a threshold of @option{lo}.
Default value for @option{hi} is 64*12, default value for @option{lo} is
64*5, and default value for @option{frac} is 0.33.
@end table
@section negate
Negate input video.