This video is well-known: it's the one which shows the impact between the Shadow of Tom Pryce and the Marshal Frederik Jansen van Vuuren during the 1977 South African Formula 1 Grand Prix, held at Kyalami.
If you don't know anything about this crash, then go here:
This video was originally filmed by one of Brunswick's cameramen: it has nothing to do with the TV cameras of the Kyalami racing circuit.
This video, then, was shown (although not fully) in the 1978 Movie "F1 - Febbre della velocità (Speed Fever)" as well as in the 1977 F1 season review (censored), made by Brunswick.
As the title says, this is the full video, found in the Brunswick archive. The quality is far from good, since it was stored as a .mov file (with a very low bitrate). So, please, don't complain about the quality. Thank you.
No disrespectful comments. You've been warned.