Los Angeles ( CNN ) -- Raw video clips of Michael Jackson 's last rehearsals will not be shown in the involuntary manslaughter trial of the late pop singer 's personal physician , the judge ruled Monday . Los Angeles County Superior Court Judge Michael Pastor spent several hours at Sony Pictures Studio on Friday reviewing about a dozen hours of video that prosecutors or defense lawyers proposed for the jury to see . `` It was a waste of my time , '' Pastor said . It was not immediately clear if the prosecution would still be allowed to show parts of the `` This Is It '' documentary about Jackson 's preparations for his London comeback shows . Defense lawyers had suggested clips `` left on the cutting room '' floor by the documentary editors might show that Jackson was in failing health in the days before his June 25 , 2009 , death . `` It 's quite the contrary , '' Pastor said . Lawyers for each side spent two weeks this month viewing more than 100 hours of video , narrowing down what they thought was relevant to the case . The prosecution selected 12 hours of video , while the defense identified four . Defense lawyer Michael Flanagan said after a hearing last Wednesday that the video showed him that Jackson was `` very talented , that he 's pretty good ; even on his bad days , he 's good . '' The defense was looking for clues in the video to show that Jackson was in ill health in his final days , but Flanagan said it was not detectable in his performance video . Jackson also did not appear to be depressed in his final days , he said . The defense will argue that none of the `` This Is It '' video is relevant to the criminal trial and would be `` a big waste of time . '' `` It shows him onstage performing , '' Flanagan said . `` I do n't know why that 's relevant as to what happened the night that he died when he could n't sleep . '' Jackson 's death was from an overdose of the surgical anesthetic propofol combined with other drugs , the Los Angeles coroner ruled . Murray , whom Jackson hired to care for him as he prepared for his comeback concerts in London , allegedly administered the fatal dose . Jury selection in the trial is set to begin on September 8 in a Los Angeles County courtroom , with opening statements later in the month . CNN 's Michael Cary contributed to this report .
The judge says viewing raw video was `` a waste of my time '' Conrad Murray 's lawyers hoped the video would show Jackson was ill before his death . Murray 's involuntary manslaughter trial starts in September .