Bigasoft WTV Converter 

Bigasoft WTV Converter is an application that provides an easy way to convert and edit WTV files on Mac. It can handle all kinds of DRM free Window Media Center WTV files, including standard definition WTV files, HD WTV file, s and WTV files with H.264 content.

It presets optimized videos for a variety of portable devices, including iPad, iPad 2, iPhone, iPhone 4, iPod, iPod touch, Apple TV, Zune, Android phones, PSP, Xbox 360, Wii, Smart Phones, BlackBerry, Archos, Creative Zen, iRiver, Pocket PC, PDA, etc.