DOCUMENTARY PRESENTATION: Issues & Formal Analysis in Documentary Film Production.
A documentary film is a film story concerning factual topics (i.e. someone or something). These films have a variety of aims: to record important events and ideas; to inform viewers; to convey opinions and to create public interest. A number of common techniques or conventions are used in documentaries to achieve these aims.
Actuality is the term for raw film footage of real life events, places and people as opposed to fictional films which use actors, scripted stories and artificial sets. Documentaries are not pure actuality films - rather they combine actuality with explanation, commentary, and perhaps even dramatization.
The voice-over in a documentary is a commentary by the filmmaker, spoken while the camera is filming, or added to the soundtrack during the production. Through this the filmmaker can speak directly to the viewer, offering information, explanations and opinions