Hello There!

I have a couple of Videos.
They are Bluray Rips of Aquarium Scenes in 1080p (1920x1080).
I play them as Desktop-Background stretched across a Triple-Head Desktop with 3600x1600.
It works fine, but playing them will use one of my cpu-cores (2.7GHz Athlon X2) fully.
Can i convert these files to something that requires less CPU-Power without loosing any quality?

The file-information is:
Video-Format: WVC1
Video-Codec: FFVC1
Audio-Codec: A52