Suge Knight has just been charged with murder in the death of his friend, and sources say a videotape will be a key piece of evidence.The L.A. County D.A. just filed the charges in connection with the death of Terry Carter ... who was killed Thursday after Suge ran him over in Compton.   Suge ran over an adversary -- Cle "Bone" Sloan -- and Carter was accidentally struck and killed.In addition to murder, Suge was charged with attempted premeditated murder, hit and run resulting in death, and hit and run resulting in injury -- all felonies.As we previously reported, deputies obtained a video of the incident. Law enforcement sources say the video captures "a portion" of what went down, but authorities tell us it significantly strengthens the case against Suge.Suge's bail was revoked Monday ... the bail commissioner decided he's a flight risk and might intimidate witnesses.If convicted, Suge faces life.