We like to handle all parts of the video so that we can help design and plan the video production. This helps with the continuity and consistency of the video.
That said, we are often hired to do less than the total video. For example, to save the cost of flying a crew across country for an interview, many East Coast producers have engaged us to shoot video interviews in Silicon Valley, and we send the footage to them for the final editing. Also, we are often hired to edit and re-edit existing footage that the client already has.