DVD shows 80gigs???

I am trying to make a copy of my fathers memories DVD (from the funeral home)
but there is a redundamt file of 831mb on there 99 times making it read as 80 gigs when it is actually only about 859mb.
What the heck can i do to make copies for my family?
DVD decryptor just fails at about 19 files, and image/copy software sits at 7mb out of 859 and the time remaining keeps going up, and all copying progs i have tried so far
die at the same place. And nothing shows (checked with several programs) there is any copy protection, but obviously the redundancy is some sort of protection.

 

dvdshrink,dvdfab or anydvd

 

dvdshrink errored and failed to read, will check others

 

Thanks a ton scorpNZ, anydvd made an image that i burned, and it works fine!!
It found like 7 different errors and types of protection and removed them.

thanks again )