Question: I know that usually a short video with audio is called "clip", but at least for me, it's associated with a music video, MTV, etc, and doesn't sound professional enough.

So is there a single word for a short video promoting a company, showing the company skills and past achievements etc?

It is going to be used in a presentation which is going to start with the video, and contains Table of Contents as the first slide. So far we have "[company name] Video Clip" but like I said in the beginning, it doesn't feel right. Neither me nor the audience of the presentation are native English speakers, if it matters.

Answer: 
Surely this is a good one :-)

> 
> A **showreel** (also known as a **demo reel**) is a short piece of
>  video or film footage showcasing an actor's previous work. Usually
>  four to six minutes in length, a showreel typically supplements an
>  actor's résumé and is used to promote the artist's skill, talent, and
>  experience to acting agents and casting directors.
> 
> 
> [From Wikipedia, the free encyclopedia](http://en.wikipedia.org/wiki/Showreel_%28actors%29)
> 
> 
>
I think a good general term for this sort of thing would be *portfolio*. In practice I've seen this term used when I've reviewed potential companies to award design and programming contracts to, for instance. The dictionary says:

> 
> portfolio: a set of pieces of creative work collected by someone to display their skills, esp. to a potential employer
> 
> 
> 

From show-business come the related terms *showreel* and *demo reel* (sometimes heard as *reel*, as in "I'd love you to take a look at my reel"). Dictionary says:

> 
> showreel: a short videotape containing examples of an actor's or director's work for showing to potential employers
> 
> 
> 

And of course the related terms *résumé* and *curriculum vitae* tend to cover the case of a written document which is used when seeking individual employment.

All of the above terms yield good google results, including forum discussions regarding specific uses of the terms in particular industries.