for both capture and output to start the codec.
Video compression codecs use the MPEG controls to setup their codec
-parameters (note that the MPEG controls actually support many more
-codecs than just MPEG). See :ref:`mpeg-controls`.
+parameters
+
+.. note:: The MPEG controls actually support many more codecs than
+ just MPEG. See :ref:`mpeg-controls`.
Memory-to-memory devices can often be used as a shared resource: you can
open the video node multiple times, each application setting up their