Here’s the deal…
The discs you rent from NetFlix or BlockBuster are recorded on a DVD that holds 9 gigs on two layers. A DVD-R that you record on your computer at home is about half the size and usually only records on one layer. Many computer burners can burn dual-layer these days, but the discs are much more sensitive to scratches and dirt than commercially produced DVDs. That’s because the commercial DVDs are pressed from a glass master and literally stamp the image into the DVD instead of trying to “burn” it. In addtion, “Hollywood” discs are burned from the absolute very best possible master and all the compression is done by really experienced professionals.
Dual Layer DVDs that you make at home are also not very compatible with the various consumer DVD players that are out there. Most times it costs about $1000 minimum to create a glass master of a DVD. Sorry, but you just gotta compress your video a lot more in order to fit it on one disc and expect broad compatibility.