What Makes A Music Video?

I think it is important to determine what a music video actually is; I would say there are about six key elements which would be there in almost every music video:

• The video lasts at least as long as the track (can be longer if you have an intro or outro or both)
• The video features the artist/band quite prominently
• The video features some element of performance- singing and playing instruments (usually miming) and often dancing or acting too 
• The video has some kind of concept along with the track
• The video does not feature a complete narrative but the concept may involve fragments of narrative
• Different genres of music produce slightly different visual conventions in music videos