How to submit a great stand-up video to clubs, bookers, festivals, and industry:

A great tape is essential to becoming a working comedian.  Many comedians at all levels have made mistakes on the promo video tape.
Do it right the first time or bookers will remember you from a bad tape.  Don’t let a bad tape detract from your true talent.

Tape every set to ensure the best chances of getting the right set on tape.
Plan your set in advance.  Make sure the material you do on stage is the same material you want to showcase and shop around to industry.
Practice, rehearse, get your showcase set down and perfect.  Bring you A game as if your camera in the back of the room is a late night talk show spot.

Video Tips to get booked
1) Good quality Video and Audio
—tape should be at a comedy club or place with a nice background
—Steady camera, clear video
—Sound should be clear
—-LOUD LAUGHS
2) START THE VIDEO WITH YOUR FIRST JOKE
—-Do not put someone else introducing you
—-Do not put your starting crowd work on
—-START WITH A JOKE and a LAUGH

3) 5- 10 minutes is all you need

Do yourself a favor and do not post every open mic, bringer, or restaurant/bar gig on your youtube channel.  Showcase only what you want to represent.
Showcase your best work and people will want to work with you. 

For more examples:  Check out these videos
http://www.profusiontalent.com/comedians.html
http://www.youtube.com/profusiontalent