Aspect Ratio Settings

[Gillou]

Hello,
Please see below for 3 options for setting the aspect ratio. What is the difference between each option? Which one is for the source and which one is for the output file?
Thanks a lot.

[ed klein]

Here is a link (if it still works) that will give your the complete defination of each of the questions your asked.

http://dvd-hq.info/Compression.html

[Gillou]

Awesome! Thank u so much ed klein.