Let me give you a small list of free programs for video compression:
Lightworks
www.lwks.com
Virtual Dub
www.virtualdub.org
Movavi Video Converter
www.movavi.ru
Shotcut
www.shotcut.com
Freemake Video Converter
https://www.freemake.com/free_video_converter/
Avidemux
avidemux.sourceforge.net
IvsEdits
http://www.ivsedits.com
DaVinci Resolve
https://www.blackmagicdesign.com/ru/products/davinciresolve/
Windows Live Movie Maker (Windows Movie Maker)
This is a standard Windows component.