I don't know if this is obvious or not, but be very careful to name the folder that you burn onto the DVD exactly the same as the original DVD name that you are copying. Exactly.
Put the VIDEO_TS file inside that folder, that is named exactly like the original.
I don't know..maybe this is not helpful, but wanted to share as that was causing me to make some coasters at one time...they would play on my Mac, but when I tried to rename the main file, they would not play on my T.V. Dvd player.