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doc/filters: extend syntax description for transpose, and add examples

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Stefano Sabatini 2012-12-12 12:36:25 +01:00
parent 6722f35dd3
commit a871b5cc98
1 changed files with 17 additions and 1 deletions
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18
doc/filters.texi
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@ -3946,7 +3946,12 @@ Default mode is @code{merge}.
Transpose rows with columns in the input video and optionally flip it.
This filter accepts the following named parameters:
The filter accepts parameters as a list of @var{key}=@var{value}
pairs, separated by ":". If the key of the first options is omitted,
the arguments are interpreted according to the following syntax:
@example
transpose=@var{dir}:@var{passthrough}
@end example
@table @option
@item dir
@ -4005,6 +4010,17 @@ Preserve landscape geometry (when @var{width} >= @var{height}).
Default value is @code{none}.
@end table
For example to rotate by 90 degrees clockwise and preserve portrait
layout:
@example
transpose=dir=1:passthrough=portrait
@end example
The command above can also be specified as:
@example
transpose=1:portrait
@end example
@section unsharp
Sharpen or blur the input video.