My DVD collection won't play

Hello everyone!

I got a problem with my Apple TV so I thought a topic here would be the best idea to solve it. The fact is that I am not able to play any DVD of my collection streamed by Wifi from my Mac Book Pro. They’re all on VIDEO_TS folders and I must say that it’s pretty much disappointing, as I’m able to stream all my HD MKV and AVI’s videos. The ATV ain’t stop loading and loading until I get tired of it and reboot it.  If anyone could help me figuring this out I’d be really happy! 

Furthermore, I’m looking for a useful software that could convert my DVDs to ISO files. 

Thanks a lot to everyone!