A promo is something such as a short video film which is used to promote a product. He races his cars, and hires them out for film, TV and promo videos. promos a short film that advertises an event or product
{i} promotion, advertisement, sales promotion, promotional presentation , encouragement to buy a certain product; promotional movie; blurb, short advertisement that is intended to make people interested in the item offered
A promotional announcement, usually for the station, but it can also promote client participation in an event i e , a station promo might mention the evening news with it's award winning news team while a client promo might mention that the advertiser will be giving away station t-shirts at the ball game