Hopefully someone can help - I have burnt 4 dvd's in all, all of them succesfully play on the computer but only two of them play on standalone dvd player. One of the dvd's that wont play on the standalone, I have tried burning 3 times to eliminate the possibility of poor DVD's. The only difference between the succesfull ones was that I had to remove trailers etc.. to get them to fit (dual layer) where as the unsuccesful tries were single layers and were decrypted then burnt to blank dvd with the same file structure and content as the original.

Do you have to change something before burning back to DVD even if it's been decrypted and fits on a blank DVD? Or am I forgetting something essential?