I had an mpeg which i converted to vob files using Sizzle for mac, worked great double checked to see if it would work in "DVD player" on my mac worked great. Write it to a Memorex (they were free, i know they are not the greatest quality for different media types) DVD-RW using Toast Titanium, just to see if it would burn ok. Tried it on two of my home theatre dvd players...nothing, probably doesn't support DVD-rw formats. The DVD-RW will play on my computer. Tried burning to another Memorex DVD+R will play fine on my computer, choppy on one of my home dvd players, and not at all on my other home dvd player. I tried burning at all all speeds it best, 2x, and 4x. Any suggestions. I am gonna try them on more dvd players tomorrow. Thanks for any input.