Not burning and not veryfying - IBM (92P6581) for ThinkPad T40 (92P6581) CD-RW/DVD-ROM (Combo) Burner

To burn videos to playable DVD. you need a professional DVD burning program to help you do the job. You can try Leawo DVD Creator. It can easily burn all kinds of videos to a DVD disc.

You can upgrade you DVD burner firmware for a try, this way can fix many general problem.
Or You may take a look at this step by step guide, it's regarding how to convert and burn movie to DVD. I followed it and successfully burned DVD to play on my home DVD player, it's easy to understand, I think it deserves a trial.
http://www.best-dvd-burning-software.com/how-to-burn-avi-divx-movie-to-playable-dvd.html
Hope it helps. Email me if you need further assistant.