Yisroel491,

Did you read the OP of the thread I linked to? Did you check the options available via --help?

For example we take this youtube link: http://www.youtube.com/watch?v=XSh65...V3g58bFQ-Wvc7Q

First you would do:
The above would give you the formats available; once you decide a format you use the -f flag as follows:

You can add -o "FILE_NAME" too in the above code to save the video to a name you desire...