Don't be caught without cover. Your B-roll should be Top Priority. Here are some tips to enhance your A-list video projects by planning your B-roll better.
If you are a documentary filmmaker, and this definitely includes you wedding videographers (yes, you are definitely documenting something), B-roll should be on your 'A list.' Collecting B-roll wouldn't hurt you narrative or fiction storytellers either, even if it's not in the storyboards.