"DaveC" wrote in message
t...
My friend makes DVD of episodes he records off of TV. They play fine on
his
DVD burner/player in his PC.

When I borrow the discs, they frequently (not always) come to a grinding
halt
in my Mac (using DVD Player app).

Lack of compatibility is a common pronblem - Manufacturers from the two
camps (DVD- and DVD+) argued for ages over who's system would produce discs
that were readable in the largest number of drives. If you friend has a
multi standard drive that will burn both + and - media have him try the
other type.