Burning movies but runs slow on my PS2...

[guardianlion]

First off hello to everyone. I will start by saying that I am burning movies while i am in safe mode. Lets just say my comp is freezing so the only way i do stuff is in safe and planing on taking my comp to the repair shop in the future. Anyways i have nero 7 ultra edition. I have successfully burned one movie b4 , in safe mode. But I have downloaded alot of tv shows. torrents. But everytime i burned them the video runs slow but the sound runs at normal speed when i play them on my ps2. I have wasted a number of dvd-r discs, so i bought a dvd-rw just save money. I know I can successfully burn movies but seem to have problems. As far as i know all the tv shows i have are .avi files and when i watched them the video seem to run fine. Can anyone help me? Thank You.