I've converted some .divx files to DVDs. Did it a couple of ways. It takes quite a while. The result is an iso image. Then I use K3B to burn the DVD, and it says "success." Then I eject the disk, put it back in my laptop, and it plays like a DVD should. But... when I loan the DVD to friends, the can not play it on their DVD players. I've tried two different movies, and two different friends (DVD players). They tell me their player does not recognize it.
Do you have any ideas what I'm doing wrong?