Elgato turbo.264
elgato.com/index.php?file=products_turbo264&PHPSESSID=2988615809b60c481f0f3c98d3f44dd8#
From the page
Saved with the link. Notes from 2007 to 2016 are mostly the page's own words, so this is probably an excerpt.
blazingly fast and easy-to-use video encoder with a high-perfomance engine.