DVD-R Not Playing

Registration date
Wednesday December 30, 2020
Last seen
December 30, 2020
Hi all,

I'm new here after being by a chum who thinks you might be able to help. I think this is the right area if not I apologise.

I have a DVD - R which contains the only copy known of the footage on it. It has worked on other DVD players in the past so it has definitely been finalised. It has no visible scratches or cracks on it but it won't play on any DVD player or laptop anymore. The laptop just spits the disc back out and a DVD player will say "insert disc"

Is it possible that is has just formatted itself and deleted the footage or does anyone know if there is something that I can do to access the disc. It has been suggested that I use some of the ISO rescue software that is available and that would be handy but I just can't get as far as getting the disc to load

Any help/suggestions would be greatly appreciated

System Configuration: Macintosh / Chrome 87.0.4280.88