Voice-over, actuality footage, archival footage, interviews, selection of detail.
Voice-over
Commentary by the filmmaker added to the soundtrack.
Explains or comments on visuals.
Offers information, explanations, and opinions.
Types of Footage
Actuality Footage: Footage taken specifically for the documentary to create realism and make it seem unscripted. Includes natural sound and lighting.
Archival Footage: Previously filmed footage or photographs from other sources.
Reconstructed Footage: Scripted footage using actors to reenact a prior event. Techniques such as blurring, distortion, lighting effects, changes in camera level or colour enhancement might be used to indicate that the footage is not real.
Interviews
Real people speak about events or issues.
Used to make the filmmaker's views appear mutually shared.
Often include experts for credibility.
Can be edited to support the filmmaker's argument.
Diegetic and Non-Diegetic Sound
Diegetic Sound: Sound whose source is visible on-screen or implied (e.g., voices, object sounds).
Non-Diegetic Sound: Sound whose source is not visible on-screen (e.g., narrator commentary, mood music).