Another program that works really well, and offers a wide selection of inputs and outputs, including reformatting, resizing etc, is HandBrake

It has lots of presets, or you can make-your-own.

And Handbrake also free



BIAB & RB2025 Win.(Audiophile), Sonar Platinum, Cakewalk by Bandlab, Izotope Prod.Bundle, Roland RD-1000, Synthogy Ivory, Kontakt, Focusrite 18i20, KetronSD2, NS40M Monitors, Pioneer Active Monitors, AKG K271 Studio H'phones