, cro wrote

Thanks !

I can understand that they didn't put Media Center in Windows 8 by default. But they should at least put the drivers so that we can watch wtv files without add-ons. Is there a licence that Microsft has to pay for that format?

Yep, .wtv is an MPEG-2 container. MS decided to save some money and not include it with Windows, hence the Media Center Pack.