Mohamed Atta, the ringleader of the Sept. 11, 2001 terror attacks, smiles and jokes with another hijacker before the two turn serious and speak intently to a camera in a video posted Sunday on a British newspaper's Web site.
The Sunday Times said the video, which is dated Jan. 18, 2000, was made in Afghanistan for release after the men's deaths.
For more than 30 minutes, the video shows Atta, who flew one of the planes that brought down New York's World Trade Center, and Ziad Jarrah, who piloted United Airlines flight 93, which crashed into a Pennsylvania field, sitting in front of a bare white wall, alternately alone and together.
It has no sound, and the newspaper quoted an unidentified U.S. source as saying that lip-readers had been unable to decipher what the men were saying.
At times in the video, the two look relaxed, laughing and chatting together before they grow serious and speak directly into the camera.
At one point, they lean over a document the newspaper identifies as a will, studying it together, pointing to parts of the page and commenting to one another.
The Sunday Times said it had obtained the video "through a previously tested channel" but gave no further details. It said sources from al-Qaeda and the United States had confirmed the video's authenticity on condition of anonymity.
It shows Atta and Jarrah sitting on the floor, and alternates between tight shots including only their faces and wider images which show what appears to be a gun propped up on the wall next to them. Both men have full, dark beards.
Atta wears a dark sweater or sweat shirt with a zipped-up collar and light-coloured stripe pattern on the arms. He tries on a traditional Afghan cap at one point, then tosses it aside.
Jarrah is in a long white robe and wire-frame glasses, which he later removes.
The Sunday Times said the hour-long video was made at an al-Qaida training camp in Afghanistan and is the only known footage of Atta and Jarrah together.
The video also includes images of a man who appears to be bin Laden speaking to an audience from an outdoor podium.
A time stamp indicated that footage was shot on January 8, 2000 and The Sunday Times said it appeared to have been made at Tarnak Farm, once the base for bin Laden's family in the Afghan desert near Kandahar's airport.
It shows about 75 men, many in turbans or caps, sitting on the ground as bin Laden arrives to address them.
A few children are also in the crowd. The man who appears to be bin Laden stands in front of an expanse of bare dirt dotted with a few trees and windowless, one-story mud-coloured buildings, some of them partly in ruins.
He appears calm, with a long beard and a tan cloak over a white robe that covers his head. He speaks for more than 10 minutes, although the camera frequently cuts away from him and onto the audience.
He often keeps his hands on the lectern and gesticulates occasionally.
The Sunday Times said those shown listening to bin Laden included Ramzi Binalshibh, who allegedly helped plan the Sept. 11 attacks and is now being held in the U.S. prison camp at Guantanamo Bay, Cuba.
Also reportedly present was Nasir Ahmad Nasir al Bahri, a security guard who the Sunday Times said has claimed he was authorised to shoot bin Laden in the head if the leader was in danger of being captured.