It is a full box set of all 20 seasons. Sure looks legit. I am not 100% sure how to tell if there is copy protection or not. It seems like it might be a disk or drive issue? I tried playing it on the same computer using VLC and it freezes on play.
henry@sitkamail.com
If this was my set of discs - based on it freezes on playback - I would start by cleaning the disc (maybe you have already done that). I use my trusty old Discwasher CD Cleaner, but there are alternatives out there also. After cleaning, try playing it again.
You can learn more about the disc by going into the "Information" box in DVDFab. Launch DVDFab, then insert your DVD in your drive. Click "Copy" in the left column. The program should see the disc and bring up a dialog box indicating the title. Click the "i" in the small circle to the right of the displayed disc title. That should open up the "Information" box to view. Bootlegs are usually not restricted and region free. Dual layer discs show "Layer 0" & Layer 1" sizes If you see only "Layer 0" it is single layer (bootlegs are usually single layer). Farther down in that box you will see indications of what copy protection is on the disc that DVDFab is removing. Bootlegs generally do not have copy protection. I would suggest that if it is restricted to 1 or 2 regions only, is copy protected & dual layer, it is probably a legitimate disc title. My problem with bootlegs is that they are usually compressing a dual layer disc to fit onto single layer media. The more compression - the more the video deteriorates.
Hopefully cleaning the disc will improve matters for you.