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Diffstat (limited to 'doc/filters.texi')
| -rw-r--r-- | doc/filters.texi | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index df1e0c7326..ea04450965 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -3256,6 +3256,10 @@ named options, expressed as a sequence of @var{key}=@var{value} pairs, separated by ":". @table @option +@item max +Set the maximum integer value to use for expressing numerator and +denominator when reducing the expressed aspect ratio to a rational. +Default value is @code{100}. @item r, ratio: Set the aspect ratio used by the filter. @@ -3268,6 +3272,9 @@ In case the form "@var{num}:@var{den}" the @code{:} character should be escaped. @end table +If the keys are omitted in the named options list, the specifed values +are assumed to be @var{ratio} and @var{max} in that order. + For example to change the display aspect ratio to 16:9, specify: @example setdar='16:9' @@ -3283,6 +3290,12 @@ To change the sample aspect ratio to 10:11, specify: setsar='10:11' @end example +To set a display aspect ratio of 16:9, and specify a maximum integer value of +1000 in the aspect ratio reduction, use the command: +@example +setdar=ratio='16:9':max=1000 +@end example + @section setfield Force field for the output video frame. |