HandBrake is a "must-have" utility for anyone managing a video library. By sticking with version 1.3.3, you can keep your Windows 7 machine productive and capable of handling modern video formats.
Shrink huge movie files to save hard drive space. Convert Formats: Turn MKV or AVI files into MP4 or WebM.
This usually means you tried to install a 64-bit version on a 32-bit version of Windows 7. Check your System Type in the Control Panel.