documentary film(Any motion picture or movie in which an actual event, era or life story is presented factually, with little or no fiction; Неигровой фильм о действительном событии, конкретном лице и т.д., представляющий факты с небольшой художественной обработкой или без нее)
fly-on-the-wall documentary(a documentary made by filming people as they do the things they normally do, rather than by interviewing them or asking them to talk directly to the camera. VLZ_58)