Not sure what you mean? Is it usual that in this day and age the media is seeking the release of a salacious video involving a famous person? Yes. Would it be usual for the famous defendant to try to seal the tape as part of a plea bargain (or even if he was going to trial, to argue that releasing it to the public would taint the jury pool thus it cannot be released at least until the matter is fully adjudicated)? Yes.
Due process has not begun? Sure it has. The prosecutor/police have formally charged Robert Kraft; he has pled "not guilty" and requested a jury trial; he has through his attorneys filed a motion to seal the tape, and at least the media has objected; the tape has not been released and presumably won't be unless the judge denies the Motion to Seal; Kraft may or may not have reached a plea deal with the prosecutor, but he has publicly been offered one (the same one offered to all the guys caught up in the sting); the case is proceeding normally through the courts; if a deal has not been reached Kraft's attorneys will presumably either join in the Motions filed by other defendants in the same boat as Kraft to suppress the tape, or see whether they are successful in getting it suppressed before proceeding in their own case. This is all part of due process.