1. ‘A music video director is a director of music videos. The director conceives of a
video's artistic and dramatic aspects while instructing the musical act, technical
crew, actors, models, and dancers. This may or may not be in collaboration with the
musical act.’
Steven Spielberg instructing Liam Neeson on the set of Schindlers List.
http://en.wikipedia.org/wiki/Music_video_director
A director is the person in charge and whose vision becomes the
music video. They may interpret a plan for the video differently and
will organise it and create it accordingly. They may work with the
artist/s to help them create what they want. A director also instructs
actors, dancers and the crew on where to stand and where to place
certain equipment.

2. ‘A camera-operator operates a variety of cameras to record video film for motion pictures,
television shows and commercials. He may also shoot film for sportscasts, ceremonial
events or concerts. As part of camera crew, he typically works with a team of directors,
technicians, and performers to consult on the technical and creative aspects of the
production.’
http://www.wisegeek.org/what-does-a-cameraman-do.htm
A camera operator is someone who captures an event, including films,
concerts or adverts. They work with the directors and performers to
help the video get the best shots and appearance possible as well as
offering musical input that may best suit what the camera can capture.
A camera operator may enhance the video through various technical
aspects of the camera, including zooming and the type of lens being
used. A camera operator must be prepared, filming from good angles
and getting the best quality footage possible.
‘A boom operator is an assistant of the production sound mixer. The principal
responsibility of the boom operator is microphone placement, usually using a boom pole
(or "fish pole") with a microphone attached to the end, his aim being to hold the
microphone as close to the actors or action as possible without allowing the microphone or
boom to enter the camera's frame.’

3. http://en.wikipedia.org/wiki/Boom_operator_(media)
A boom operator is someone whose primary role is to capture the best
sound possible and to follow the actors as closely as possible with the
boom mic, without it entering the camera shot. The operator must
maintain a strong and steady arm as well as having good positional
skills to keep the microphone placement.
‘Lighting technicians set up and operate lighting equipment in television and in film,
generally specialising in one or the other as the techniques and equipment differ. The
lighting team's work is crucial as lighting creates the right atmosphere to evoke an
audience's response and demands high-level technical and creative skills’
http://www.prospects.ac.uk/lighting_technician_broadcasting_film_video_job_description.htm
Lighting Technicians are people who set up and control the lighting
used in thing such as film, television, concerts and live sporting
events. The lighting they use must reflect the type of media that is
being shown, for example dim lights for a horror movie. The lights

4. must be used to the best of their abilities to create a good atmosphere
for the audience.