What I did is the following to make it similar presentation* as the webcam at Maeshowe (http://www.iol.ie/~geniet/maeshowe/ ); from the internet stream four separate picture cues were taken, each produced by a different OPW camera: . on the top of Newgrange cairn looking towards the rising sun* . at the middle of the passage looking towards the exit/entrance . in the centre recess [near the ground] looking towards the exit/entrance* and . at the chamber ceiling looking towards the chamber ground*. Other picture cues were present, but these were deleted.
These four picture cues are presented as picture in picture; this reduces the live broadcast from 45 minutes to some 6 minutes.
The OPW broadcast was in memory of the witnessing of the sun light through the lightbox at Newgrange 40 jaars ago (1967) by Prof. Michael O'Kelly. The sun light gets into the chamber at 8:58 and around 9:15 GMT no light is in the chamber anymore.
OPW is condoning this composite video on YouTube (I got their acknowledgement).