PHILADELPHIA — Pennsylvania court officials said Friday they launched an investigation after a video surfaced on YouTube that appeared to have been recorded from inside a courtroom during closing arguments at Bill Cosby’s sexual-assault trial.

The nearly two-hour film — posted under the title “MUST SEE — The Cosby Case Defense Closing Arguments” — featured audio of Cosby lawyer Brian J. McMonagle’s June 12 final pitch to the jury. It’s not clear who produced it, but the recording appears to be a violation of Pennsylvania law prohibiting transmission, photography, or video recording in state courts, investigators said.

Jim Koval, a spokesman for the state court system, confirmed the investigation but did not elaborate.

The video had more than 140 views before it was taken off the social sharing site Thursday. It also contained photos that appeared to have been taken inside an annex courtroom with a screen where Cosby’s trial was broadcast live for those who didn’t have courtroom seats.

The case ended in a mistrial last Saturday after a jury of seven men and five women failed to reach a verdict after 52 hours of deliberations over five days.