MakeMKV is your one-click solution to convert video that you own into free and
patents-unencumbered format that can be played everywhere. MakeMKV is a format
converter, otherwise called "transcoder". It converts the video clips from
proprietary (and usually encrypted) disc into a set of MKV files, preserving most
information but not changing it in any way.
The MKV format can store multiple video/audio tracks with all meta-information
and preserve chapters. There are many players that can play MKV files nearly
on all platforms, and there are tools to convert MKV files to many formats,
including DVD and Blu-ray discs.