dvd won't play have i lost what is on it?

[CALLOHAN]

when inserting dvd , the dvd player rejects disk as incompatible but disk was recorded on this lg recorder . it won't play on my imac either. then yesterday i tried it again and it did play. now today it doesn't again . i'm currently backing up all my home videos to an external drive and this one has alot of the kids on it . would hate to loose it. is there perhaps some dvd fix software i could try. thanks.

dvd looks in perfect condition,
dvd is an lg brand 4.7gb dvd-r
I also have a pc windows os which can't pick up anything off of this dvd says it is a blanc disc. if files haves been erased from a dvd can they be rescued or is that it.???

[G)-(OST]

Try to recover as much of the data from your DVD with ISO Buster from the tools sectiion, I use it on disc's that have become unreadable or get the "cyclic redundancy" message with.

[hech54]

DVDDecrypter also does a great job on discs like that. I always make sure I rip them in FILE SPLITTING - NONE mode too.....just in case it is the DVD structure that is messed up and not the video content itself.

[CALLOHAN]

thanks to ghost and confused. will try both sujestions . think i will enjoy using this forum.