Ends on a scarf

How do you when adding on yarn of the same color to a scarf, tuck the ends in of both yars so that you can’t see them?

There are some really great videos here:

http://www.knittinghelp.com/knitting/basic_techniques/misc.php

I’m not a good enough knitter to explain it other than showing you where the videos are, but if you can watch the videos, they do a great job!