Movies & TV app is the new video player comes with Windows 10. Similar to movie players in old Windows, Movies & TV supports very limit of video audio codecs and often renders famous "Missing Codec Error".
In old days, users used to install codec pack softwares to fix above problem, but this does not work in Windows 10. Becasue of new security measures implemented in Windows 10, Movies & TV player does not load any conventional codec park. So installing any exising codec pack does not fix "Missing Codec Error" in Windows 10.
This new Movies & TV Codec Pack uses advance codec technologies to dedicate to solve this "Missing Codec Error". With this new Movies & TV Codec Pack software, user will be able to play any vidoes in Windows 10 Moives & TV app regardless what video audio codecs it uses.