The grainy clip, lasting five minutes and 20 seconds without sound or narration, showed a man speaking into a handheld radio, with three US ships in the distance.

In the US version of the incident, a four-minute, 20-second video showed the Iranian boats appearing to ignore repeated warnings from US warships. One crew member on the bridge of the destroyer USS Hopper is heard addressing the Iranian's over the radio saying: "This is coalition warship. I am engaged in transit passage in accordance with international law. Intend no harm."

Iran's version of the encounter, however, included no such audio. It also did not appear to show the entire standoff, which Washington officials have said lasted about 20 minutes.