MakeMKV :-

  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

DivX Player :-

  DivX Player is a software media player that delivers high quality playback of movies, TV shows and web video clips in the Internet’s most popular formats, including AVI, DIVX, MKV, MP4. Optimized for DivX, DivX Plus and new DivX HEVC video, DivX Player is the must-have media player