Not sure why you would need to put them on a DVR.
You can break encryption with DVDFab HD Decrypter. It is free to use. DVDFab has set things up nowadays so that as you use the free decryption/ripping section of the program, you are using up the free 30 day trial. Just a heads up on that. http://www.dvdfab.com/free.htm
Once you have the dvds on the hard drive you can edit them and join them together with VideoReDo TV Suite, or one of the programs from Womble. None of these are free, but there are free trials for each. There are other ways of doing this with free tools, but they are not straightforward. These commercial products are much more convenient.
At this point you’ll have one honking big dvd. You may have to burn to a dual layer disk. And combining three dvds to one, you might have to compress this big dvd just to fit onto a dual layer! Total size on a dual layer dvd is going to be around 7.95gb. Total size you can fit to a single layer will be around 4.38.
If you need to compress the dvd, look at DVDShrink (free at www.mrbass.org ) or the free version of DVDRebuilder if you want the absolute best quality in this dvd. Rebuilder will take a lot longer to process the dvd.
Then burn to a disk. We recommend Verbatim blank dvds around here and if you have to use a dual layer dvd ONLY use Verbatim.
You do have a dvd burner in your computer I hope? I use a free burning program called ImgBurn for all my video burns. There are a lot of guides to using it at their forums.
Now, that’s the way I’d do it on the computer. If you want to do the editing on the dvr, you’ll have to wait for someone else’s input, cause that is outside my experience.
Welcome to the forums by the way.