Summary: Want to find an easy way to play MKV, VOB, Divx, AVI, Tivo, WMV, MTS, MXF, M2TS, FLV, F4V, 3GP, M4V on Windows 8.1(Pro) ? Check out this tutorial on how to convert all kinds of HD videos with supported video format to Windows 8.1(Pro). “After upgraded Windows 8 Pro 64bit, I found the playe...