A processing unit for providing stereoscopic video data on board an aircraft, wherein the processing unit comprises: - a processing component configured to process at least a part of first video data and second video data to form stereoscopic video data, wherein the first and the second video data represent video images of one or more views external to the aircraft; and - a forwarding component configured to forward the formed stereoscopic video data to one or more display devices provided on board the aircraft for presentation to passengers of the aircraft, wherein the first video data represent video images captured by a single external video camera (202; 302) for each of the one or more views and the processing unit further comprises a generating component configured to generate the second video data from the first video data, characterized in that the generating component is configured to generate the second video data by duplicating the first video data and by delaying or retarding the duplicated first video data by a preconfigured and/or determined delay time, and wherein the processing unit is configured to determine the delay time based on at least one of delay information input by one or more passengers of the aircraft and delay information input by aircraft personnel, wherein the forwarding component is configured to forward at least one of the first and second video data to the one or more display devices provided on board the aircraft for presentation to passengers of the aircraft, and wherein the forwarding component is configured to forward only the first video data or only the second video data or both the first and second video data based on an input by the one or more passengers of the aircraft. - a processing component configured to process at least a part of first video data and second video data to form stereoscopic video data, wherein the first and the second video data represent video images of one or more views external to the aircraft; and - a forwarding component configured to forward the formed stereoscopic video data to one or more display devices provided on board the aircraft for presentation to passengers of the aircraft, wherein the first video data represent video images captured by a single external video camera (202; 302) for each of the one or more views and the processing unit further comprises a generating component configured to generate the second video data from the first video data, characterized in that the generating component is configured to generate the second video data by duplicating the first video data and by delaying or retarding the duplicated first video data by a preconfigured and/or determined delay time, and wherein the processing unit is configured to determine the delay time based on at least one of delay information input by one or more passengers of the aircraft and delay information input by aircraft personnel, wherein the forwarding component is configured to forward at least one of the first and second video data to the one or more display devices provided on board the aircraft for presentation to passengers of the aircraft, and wherein the forwarding component is configured to forward only the first video data or only the second video data or both the first and second video data based on an input by the one or more passengers of the aircraft.