A ripple edit is a timeline operation in which changing the length of a clip, or inserting or removing material, automatically moves every later clip on the affected tracks by the same amount, so the sequence closes up or expands without leaving gaps. In video editing, it is one of the four fundamental trim types in non-linear editing, alongside the roll, slip and slide edits.
The ripple edit changes the total duration of the sequence. That property makes it the fastest way to tighten pacing, but it also makes it the trim most likely to break sync between picture, dialogue, music and other tracks when used carelessly.
How a ripple edit works on the timeline
In a ripple trim, the editor drags one edit point, either the outgoing end of a clip or the incoming start of the next clip. Only that side changes, and everything to the right of the edit slides left or right by the trimmed amount. If a clip is shortened by 12 frames, every following clip moves 12 frames earlier and the sequence becomes 12 frames shorter.
Ripple behavior also applies to ripple delete, which removes a clip or a gap and closes the space, and to ripple insert, in which new material pushes later clips forward. In most editing applications, the default insert edit is a ripple operation, while an overwrite edit is not.
| Operation | Action | Effect on sequence length |
|---|---|---|
| Ripple trim shorter | Removes frames from one side of an edit | Sequence becomes shorter |
| Ripple trim longer | Adds available handle frames to one side | Sequence becomes longer |
| Ripple delete | Removes a clip or gap and closes the space | Sequence becomes shorter |
| Ripple insert | Inserts a clip and pushes later material | Sequence becomes longer |
Lengthening a clip is only possible when handles exist, meaning unused source media beyond the current in or out point. When the source runs out, the trim stops at the media limit.
Ripple edit compared with roll, slip and slide edits
The four classic trims differ in which points move and whether the sequence duration changes. Choosing the right one saves time and protects sync.
| Trim type | What moves | Sequence duration | Typical purpose |
|---|---|---|---|
| Ripple edit | One edit point, later clips shift | Changes | Tightening pacing, removing pauses |
| Roll edit | Both sides of one edit point together | Unchanged | Moving a cut earlier or later |
| Slip edit | Source content inside a clip | Unchanged | Choosing a different moment within a fixed slot |
| Slide edit | A whole clip between its neighbors | Unchanged | Repositioning a shot without changing length |
The roll edit is the natural alternative when the editor wants to change where a cut happens but keep everything after it in place. A ripple edit removes or adds time; a roll edit only redistributes time between two adjacent clips.
Ripple edits and sync across tracks
The central risk of a ripple edit is sync drift between tracks. If a dialogue clip on video track 1 is rippled but the music or sound effects on other tracks are not, the later material on those tracks no longer lines up. Editors control this through track targeting and sync locks.
Sync locks tell the software to ripple all locked tracks together, adding or removing filler as needed, so that picture and audio stay aligned. Magnetic timelines handle this differently by attaching connected clips to the primary storyline, so they move with it automatically.
| Mechanism | How it works | Main caution |
|---|---|---|
| Sync lock | Locked tracks ripple together with the edited track | Unlocked tracks can still drift |
| Track targeting | Only selected tracks receive the edit | Wrong targets cause hidden sync errors |
| Linked clips | Video and its audio stay joined | Unlinking breaks the protection |
| Magnetic timeline | Connected clips follow the primary storyline | Clips not connected may shift unexpectedly |
Split edits such as J-cuts and L-cuts need special attention, because the audio and video edit points are at different positions. A ripple applied to only one side can change the overlap and shift lip sync by several frames.
When to use a ripple edit
Ripple edits are the workhorse of rough cutting and pacing. They are ideal whenever removing or adding time is the goal and the material after the edit should follow naturally.
| Situation | Recommended trim | Reason |
|---|---|---|
| Removing pauses and false starts in an interview | Ripple delete | Closes gaps without manual moving |
| Tightening a scene by a few frames | Ripple trim | Changes pacing while keeping order |
| Moving a cut to a better moment | Roll edit | Keeps the rest of the timeline fixed |
| Locked music edit or fixed-length commercial | Roll, slip or slide | Total duration must not change |
| Adding a new shot in the middle | Ripple insert | Makes room automatically |
Many editors use keyboard-driven ripple trimming, such as trimming to the playhead from the left or right, because it is faster than dragging and gives frame-accurate results during playback.
Common mistakes with ripple edits
Ripple mistakes are often invisible at the edit point and only appear later in the timeline. The most frequent problems are listed below.
- Rippling one track only while music or effects stay in place, causing sync errors further down the sequence.
- Breaking a locked duration in a commercial or broadcast slot that must hit an exact length such as 30 seconds.
- Shifting markers and subtitles that were placed at absolute timeline positions rather than attached to clips.
- Disturbing a music edit where cuts were timed to the beat after the rippled point.
- Using ripple delete on a selection that unexpectedly spans several tracks and removes more than intended.
A good habit is to check sync at the end of the sequence after significant ripple changes, and to duplicate the sequence before major restructuring so that a reference version always exists.
The short version
A ripple edit shortens or lengthens a clip in a video project and automatically slides everything after it to fill the space. Nothing is left empty, and nothing overlaps.
Picture a row of books on a shelf. If you remove a thin book from the middle and push the remaining books together, that is a ripple edit. The row becomes shorter, but the order of everything else stays the same.
Where it makes a difference
An editor cuts a 12-minute corporate interview into a 3-minute portrait video. The raw interview contains long pauses, repeated phrases and filler words. Working through the timeline, she uses ripple delete to remove each unwanted section, and the following clips close up instantly, so the edit never has empty gaps to clean up.
B-roll and music sit on separate tracks with sync lock enabled, so they move together with the interview. Near the end, she switches to a roll edit to adjust a cut between two answers without changing the total length, which is now locked to match the music. The final film runs exactly 3 minutes 00 seconds, with dialogue, pictures and music in perfect sync.