What if there were no re-takes, no cuts allowed in filmmaking? This is what single-shot films tend to achieve, and considering their complexity, they are extremely difficult to come by.
Definition
A one-shot/one-take film, as the name suggests, refers to the practice of shooting the entire film in one take, as opposed to taking several scenes and then editing them together.
Pioneer
"Master of suspense" Alfred Hitchcockis credited with popularizing this craft. He was reportedly the first to take upthe challenge and did so for his film 'Rope' that came out in 1948.
Examples
The examples of one-shot films are limited, and understandably so. Some examples are 'Macbeth' (1982), 'Timecode,' 'Russian Ark,' 'La Casa Muda,' 'Fish & Cat,' 'Son of Saul,' and 'Blind Spot.'
Apparent one-shots
Two mainstream Hollywood films, '1917' and 'Birdman,' reportedly used this technique but had some invisible cuts and planned camerawork so that they only appeared to be one-shots.