Can anyone tell me the difference between the two? I have an avi that is widescreen and I want to keep it widescreen, but I used 16:9 525 line (NTSC) and got two huge black bars at the top and bottom. Bigger then usual. Does this have something to do with this aspect ratio setting? Also, I changed the video arrange method to Full Screen - Keep aspect ratio. Should I have used different settings to reduce the thickness of the top & bottom bars? I still want to keep the widescreen, but I know there must be a better setting I should use to reduce that black bar some. If anyone knows, let me know, thanks.