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Diffstat (limited to 'doc/filters.texi')
-rw-r--r-- | doc/filters.texi | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index 81918dec36..7bf3896282 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -2128,6 +2128,31 @@ fade=in:5:20 fade=in:0:25:alpha=1 @end example +@section field + +Extract a single field from an interlaced image using stride +arithmetic to avoid wasting CPU time. The output frames are marked as +non-interlaced. + +This filter accepts the following named options: +@table @option +@item type +Specify whether to extract the top (if the value is @code{0} or +@code{top}) or the bottom field (if the value is @code{1} or +@code{bottom}). +@end table + +If the option key is not specified, the first value sets the @var{type} +option. For example: +@example +field=bottom +@end example + +is equivalent to: +@example +field=type=bottom +@end example + @section fieldorder Transform the field order of the input video. |