The Knot has some tips on how to make sure you hire the right videographer.SAN FRANCISCO (KGO) -- It's one of the happiest days of any couple's life - their wedding day. So how can you make sure it's well-documented?Watch the video in the player above for some tips from The Knot on how to hire the right wedding videographer. Click here for more on a San Francisco couple who still hasn't received their wedding video. Report a correction or typo