DVD burning software issues

Hello people! I am new to this forum and I have a question about DVD santa. I try to burn movies that are widescreen and I select widescreen fromat and it makes it full screen. Any idea why it is doing this?

Because of your TV.

Had no idea it would be my tv. Thanks alot for your help.

Only if you really watch the output on a TV system.

How do you watch them?

Seriously, some options in DVDSanta could be the issue.