http://www.free-codecs.com/Ogg_DirectShow_Filters_download.htm

http://www.vorbis.com/

http://ffdshow.sourceforge.net/tikiwiki/tiki-index.php Getting ffdshow -> Daily builds http://ffdshow.sourceforge.net/tikiwiki/tiki-index.php?page=Getting+ffdshow

http://www.xvid.org/ 本家． Windows用バイナリの配布 http://www.koepi.org/

http://www.divx.com/