UN-Protecting Issue

[EAGLE]

Hello everybody

I have an issue with WMV files

That is protected by someway which change the extension from WMV to WMV.mpVideo
And I can not open this file accept by the provided Application ..
I tried many Programs to un-protecting or re-recorded that file such as
Aimersoft DRM Media Converter
iSkysoft Video Converter Ultimate
FreeMe2
DRM Buster
Debut Video Capture Software
WM Capture 7
Total Mounter
CamStudio
and Camtasia studio

all ways filed to add files and When I play the record of the Desktop .. I see the window of video change to black blank area just the sound recorded

Hope someone have the solution