Mac The Ripper - running VIDEO_TS folder

I would be very grateful if someone can help me with this.

I always use MTR to de-encrypt DVDs, then I run the VIDEO_TS folder through Toast9 and voila, I have a DVD that I can watch in my lounge on my DVD player.

But sometimes, I download DVDs from the internet (naughty, I know, but only sometimes). So after I download the VIDEO_TS folder from the internet and I run it through Toast9, it sometimes says I cannot make a DVD because it's encrypted.

My question is, is it possible to run the downloaded encrypted VIDEO_TS folder through MTR to de-encrypt it? It seems that MTR only accepts data from an actual disk..

Someone once told me that I could try to mount a disk image on my hard drive and then MTR would think it's a disk, but I couldnt get that to work.

Any advice would be great. Thanks a lot in advance.

Also, are there any alternatives to MTR out there that are better?

 

Thanks.

The reason I downloaded the VIDEO_TS folder from the net, is because that was the only format it was available in.

I understand that I could easily convert this to AVI or MPEG etc, but this film is for my mother who does not watch movies on her PC, only on her DVD player.