ffdshow

ffdshow tryouts is a DirectShow and Video for Windows codec with support for a wide range of audio and video formats, such as Xvid, DivX, and H.264. 
 
 
Beta 6 adds support for E-AC3, DTS-HD, Dolby TrueHD and MLP decoding. This release also features a new deinterlacer called Yadif as well as various improvements to volume normalization and H.264 playback. 
Among the usual slew of bugfixes stands out one important security fix: Updating is strongly recommended! 
 
A complete changelog and download link are available at: 
http://ffdshow-tryout.sourceforge.net/