Can someone explain these settings.

[Grumpybear2000]

Can someone explain difference in these settings

1. letterbox
2. 4.3
3. 16.9
4. pan and scan

[IdolEyes787]

4.3 is what you would consider normal screen aspect as opposed to 16.9 which is widescreen.
Letterboxing is a way of showing widescreen on a 4.3 aspect ratio screen that preserves the entire picture.
http://hkfanatic.com/widescreen/letterbox/images/letterbox_ex1_after.jpg
as opposed to pan and scanning in which again a widescreen image is shown in 4.3 aspect but part of the original image is lost allow the picture to fill the screen.

http://www.high-techproductions.com/widescreen2.jpg
To ensure that the most important part of the scene is not lost the image will seem to move from side to side(pan) as needed

[Grumpybear2000]

Are all widescreen movies suppose to be same settings, because when you download a avi movie there all different heights. Downloaded one other day and its got a wide green strip on the bottom so guess be downloading it again.

[thegoof]

For perhaps too much information, check out doom9.net. There is a heading under guides entitled "Aspect rations explained."

[Grumpybear2000]

ty heading there now