What Is C-Roll?

C-roll is unofficial language for a third layer of pictures in an edit. If A-roll is the story spine and B-roll is referential cover footage, C-roll is garnish: light leaks, bokeh, weather, empty frames, branded stingers, abstract stock, or behind-the-scenes that set tone instead of illustrating a claim. The label has a thin historical echo in extra optical-printer rolls used for titles, but everyday use comes from internet video culture extending the A/B alphabet. Because the term is slang, people also use it for generated fill, unused BTS, or any shot that is not A-roll or B-roll. The useful test is functional: if the shot would still make sense as evidence of the line, it is B-roll; if it only answers how the moment should feel, it is C-roll. Most videos do not need much of it. Missing proof shots are a B-roll problem, not a C-roll problem.