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diff --git a/DOCS/man/vo.rst b/DOCS/man/vo.rst
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@@ -506,6 +506,12 @@ Available video output drivers are:
limitations in the number of video textures that can be loaded
simultaneously.
+ ``tscale-clamp``
+ Clamp the ``tscale`` filter kernel's value range to [0-1]. This reduces
+ excessive ringing artifacts in the temporal domain (which typically
+ manifest themselves as short flashes or fringes of black, mostly
+ around moving edges) in exchange for potentially adding more blur.
+
``dscale-radius``, ``cscale-radius``, ``tscale-radius``, etc.
Set filter parameters for ``dscale``, ``cscale`` and ``tscale``,
respectively.