Contractual briefs are agreements between a client and employer that define each party's duties and responsibilities. They ensure both parties understand what is expected of them to avoid misunderstandings. Negotiated briefs are documents agreed upon by two companies after discussing their different ideas. A formal brief focuses on important details and getting straight to the point for large groups or businesses. A commission brief contains information about a proposed video project, such as goals, budget, deadlines, and submission to production companies for consideration.