J-cut and L-cut
Also known as: J-cut, L-cut, split edit
Split edits where sound and picture change at different moments: in a J-cut the next clip's audio starts early, in an L-cut the previous audio carries on.
Updated
What it means
A J-cut and an L-cut are both split edits: the audio and video of a cut do not switch on the same frame. In a J-cut, you hear the next scene before you see it - the roar of an engine starts while the image still shows the rider gearing up. In an L-cut, the picture changes but the sound of the previous clip keeps running underneath.
The names come from the shape the clips make on an editing timeline. With the audio extended left under the previous clip, the outline looks like a J; extended right, it looks like an L. Both make a cut feel smoother because the ear bridges the gap the eye has to jump, which is why documentary editors use them to stitch A-roll interviews to cutaways.
How it works in practice
In Premiere Pro, Final Cut Pro or DaVinci Resolve you create a split edit by unlinking audio from video, or by rolling just the audio edit point, then dragging the audio edge 10 to 40 frames past the video cut. A half-second lead is often enough for a J-cut to feel natural.
Action footage offers plenty of material. Let the wind noise of a helmet camera start just before you cut to the descent, or keep a friend shouting from the takeoff running over the first second of the jump. In vlogs, an L-cut lets the narration continue over B-roll so the voice never breaks.
What to watch out for
Split edits only work if the audio is worth hearing. Action cameras in waterproof housings record muffled, wind-blasted sound, and many highlight edits replace camera audio with music. In that case there is little to split - the music already bridges every cut, especially when the edit uses beat sync.
Watch the overlap length. If the audio leads by too much, the viewer hears a scene that does not match what they see, which feels like a sync error rather than a choice. Keep levels consistent too: the extended audio should crossfade with the next clip so there is no sudden drop. If a cut still feels abrupt, a short audio Transition often helps more than a visual one.
How RawClip handles it
RawClip edits your highlight to an included music track and syncs the cuts to its beat, so the soundtrack itself carries the viewer across each change of shot. There is nothing to prepare on the audio side - upload your raw footage as it came off the camera.