Trailers, a great example of professional Video Editing.

Video Editing is used in many areas of video one of them being Trailers. Now Trailers can be used for a variety of things such as short movies etc but are generally known for film previews. The reason that they're a great example of video editing is because they need to attract and draw in people to a particular movie. In other words it's a form of advertisement for a particular film. Due to a Trailer's purpose as stated above, effective and professional editing of clips taken from a movie is necessary for the purpose to be fulfilled (Drawing in people, hype etc).

Here is an example of a excellent film Trailer:

Now this trailer uses various techniques by the looks of things but does an especially good job at building momentum and giving the viewer a rough idea of the story. The trailer uses it's own graphics to accompany it for example the spinning gears with yellow text (this helps promote the film).

The music is also great with a fantastic choice of soundtrack, which is edited really well with the film clips and this results in great timing to emphasize certain scenes and help build momentum.