DVD ISO copy weirdness

[T.C. Hollingsworth]

2011/12/29 夜神　岩男 <supergiantpotato at yahoo.co.jp>:
> I bought a new movie on DVD the other day for my kid (Christmas and all...).
> I wanted to back it up because I've noticed a few of my older DVDs don't
> play correctly anymore (blocky in spots or don't play period but are studio
> cuts that used to work!).
>
> Normally I just put a DVD in the drive, select "Copy disk..." and move
> through the dialogue to save it to an .iso. Later I can either have the
> computer or the player play it from anywhere in the house.

Do you know what software you're using the copy the disc?

> Simple.
>
> But today this one is acting strangely. It is giving me a css key error,
> which is weird, because this is not BlueRay or anything, and it works just
> fine in the ancient for-TV DVD player, so its nothing new.
>
> Beyond that, I can open the disk up and see the typical DVD directories:
> {VIDEO,AUDIO}_TS
>
> Looking in VIDEO_TS to see what's the matter, everything can be played just
> fine. No CSS problems. The DVD works in Media Player, VLC, etc. just fine. I
> can run each individual chapter segment as well. But the total size of
> VIDEO_TS claims to be 46GB, about 10 times bigger than it should be... and
> I'm not going to copy 46GB just to get a movie. It was a good movie, but not
> THAT good.

That's definitely incorrect, seeing as how even dual-layer DVDs can
hold at most 8GB of data!

-T.C.