J-Cut & L-Cut
One-click J-cuts and L-cuts — park the playhead, set the overlap, or batch across every selected cut.
What it does
A split edit is what makes a cut feel professional: the sound of the next shot arrives before its picture (J-cut), or the previous shot's audio carries over the new picture (L-cut). Building them by hand means unlinking, nudging, relinking — and hoping nothing slipped a frame. PrimCut does the whole move in one click: park the playhead on a cut, set the overlap in frames (1–30), press J or L.
Doing a whole interview? Select the clips and batch every junction at once, with a real progress bar and a Cancel button. Placement is frame-accurate, picture and sound stay linked, and by default PrimCut duplicates your sequence first so the original is always intact. No exports, no internet — it works directly with Premiere.
Key features
- One-click J or L — playhead on the cut, pick the direction, done.
- Overlap in frames — dial in exactly how far audio leads or trails (1–30 frames, default 12).
- Batch mode — apply across every selected clip's junctions in one run, with progress and cancel.
- Frame-accurate & linked — picture and sound stay in sync and stay linked afterward.
- Safe by default — your sequence is duplicated before the first cut lands.
- Fully offline — no keys, no uploads, nothing but Premiere.
How to use it
Park the playhead on a cut
Anywhere two clips meet — that junction is what gets the split edit.
Set the overlap
Choose how many frames the audio should lead or trail — 12 is a natural starting point.
Press J-Cut or L-Cut
The offset is built instantly, with audio and video still linked.
Or batch it
Select multiple clips and apply to every junction at once — progress bar and Cancel included.
Watch the walkthrough
Frequently asked questions
What's the difference between a J-cut and an L-cut?
In a J-cut the incoming shot's audio starts before its picture appears; in an L-cut the outgoing shot's audio continues over the new picture. Both smooth the edit so cuts stop feeling abrupt.
Will my clips go out of sync?
No. Placement is frame-accurate and picture and sound come out linked, so later edits move them together.
Can I do a whole interview at once?
Yes — select the clips and batch mode applies the split edit to every junction, with a progress bar and Cancel if you change your mind.
What if I don't like the result?
PrimCut duplicates your sequence before applying by default, so the untouched original is right there in your project.
Related tools
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