The mixing process is the same as in the music DJ-ing. You load up 2 videos in a supported file format (DVD, DivX, xvid, Mpeg1/2/4, AVI, WMV, MOV, VOB, etc) and use transitions, effects, audio sounds to create a mix. In the case of video mixing, you will need a hardware device like Numark TotalControl or Ecler Nuo4 mixer.