A J-cut is a technique used in split film editing, where the audio from the following scene overlaps with the video from the current shot, so that the audio plays before the audience sees the next shot. Is also known as an audio lead/advance. The name derives from the shape of the audio and video cut together during the era of analogue film.

An L-cut is another technique used with split film editing. Opposing a J-cut, it works in the way that the audio from the current shot carries over to the next, often used in scenes involving dialogue. It’s name also derives from the shape of the audio and video cut together during the era of analogue film.