I've meant the dvd media brand, which you've used for burning. Booktype is a little piece of information on a disc which the player or drive identify as +R, -R or for example -ROM.
A standard original pressed dvd movie has booktype Dvd-ROM, so you can fool your player if you're able to change it for example with a +R disc, with other words the standalone thinks it's a Dvd-ROM. You know what i mean and what for a burner you've?