You have precious few seconds to capture the attention of your viewers so they’ll watch the rest of your video.  One fifth of your viewers will click away within the first 10 seconds of your video – so give them a reason to stick around.  Within the first 10 seconds, you need to hook your viewers and brand your business.  The best “hooks?”  Curiosity and emotional.  Get an emotional reaction or spike someone’s interest and they’ll stick around a little longer to see what you have to say.

CRUCIAL 10 Seconds of Video