Compress Videos to 50% w/o Loss of Quality

Hello Guyz Here is a Simple, Small and Opensource Application which Will Help You in Saving your Disk space from Large Size Movies and any other Video Clips.
Handbrake-an open-source, GPL-licensed, multiplatform, multithreaded video transcoder, available for MacOS X, Linux and Windows.
Just Download the Software from its homepage, Its a Freeware and Enjoy encoding your videos with many of its features.
Features :
Chapter selection, Chapter Markers
Subtitles (Burn in the Video)
Multi channel Audio Support
Vobsub and Closed Captions
SRT import and passthru
SSA passthru or burn-in (experimental)
custom Video Size
Constant Quality or Average Bitrate Video Encoding
Support for VFR, CFR and VFR
Video: Deinterlacing, Decomb, Detelecine, Cropping and scaling
Live Video Preview
Built in Presets for Different Devices.


Note:- 
You additionally have to install Microsoft .NET Framework 3.5 SP1 This must be installed even if .NET version 4 is installed. 4 is not backwards compatible.

I'm using it since last two months and I have saved more than 50 GB of My HDD space and of course Quality of the Videos is according to my Wish.
Hope You all like it..
You can find further help and support on the homepage of the Software