.. _interlace:

.. index::
   pair: command line option; interlace
   pair: menu item; Interlace
   pair: filter; Interlace

Interlace filter
================

The interlace filter halves the horizontal resolution, and in each frame
alternates between drawing only the even and only the odd lines. This speeds up
the calculation, and in higher resolutions produces a motion-blur-like effect.

:ref:`More information about filters <filter>`

**Available as**: menu item, command line option
