Multi-Track Timeline — The Way Pro Editors Cut
Unlimited layered video and audio tracks, ripple and roll edits, three-point editing, J/L cuts, and nested sequences. The pro NLE timeline, in your browser.
What it is and why it matters
The timeline is the editor. Every other tool sits on top of it. Skrrol AI's multi-track timeline is built to behave the way professional non-linear editors behave — because that's what editors who already cut professionally expect, and because consumer timelines that hide complexity also hide power. You get unlimited video tracks, unlimited audio tracks, real magnetic snapping, ripple and roll edits, slip and slide, three-point editing from the source viewer, J and L audio extensions across cuts, and nested sequences for compound clips. Keyboard shortcuts match the industry-standard layout — B for blade, I and O for trim to playhead, Shift+I and Shift+O for ripple trim, V for select, A for track-select, comma and period for nudge.
The timeline isn't just feature-rich — it's also responsive. Tracks render at GPU speed so even projects with twenty layered video tracks stay scrubbable on consumer hardware. Snapping is intelligent: clips snap to the playhead, to other clip edges, to markers, to detected beats on the music, and you can suspend snapping temporarily by holding Cmd or Ctrl. Markers, sub-clips, and chapter labels keep long projects organized. The undo stack is unlimited and survives browser refresh because every action is persisted to local storage. Whether you're cutting a fast-cut social reel with three tracks or a feature-length documentary with thirty, the timeline is the same — and it scales.
How it works
- 1
Drop clips onto tracks
Drag media from the bin onto any track. Tracks auto-create as needed; there is no preset cap on track count.
- 2
Use blade and select
Press B to enter blade mode and slice clips at the playhead. Press V to return to the select tool and grab clip ranges.
- 3
Trim with handles or shortcuts
Drag clip edges to trim, or press I to trim head to playhead and O to trim tail to playhead. Hold Shift for ripple trim.
- 4
Three-point edit from source
Open a source clip in the source viewer, mark in and out, park the timeline playhead at the destination, press F or comma to insert or overwrite.
- 5
J/L audio cuts
Drag just the audio edge of a clip past its video edge to extend audio across the cut — the J and L cuts that pro narrative editors live on.
- 6
Nest into compound clips
Select a range, right-click, choose Nest. The selection becomes a single compound clip you can apply effects to as a unit.
Benefits
Unlimited tracks
Stack as many video and audio tracks as your project demands. No artificial cap on layered editing.
Industry-standard shortcuts
B, I, O, V, A, comma, period — the muscle memory pro editors already have, working out of the box.
Nested sequences
Group complex sections into compound clips you can effect, animate, and reuse across the project.
Local-first persistence
Project state saves to OPFS continuously — refresh the browser, your timeline is intact, undo history included.
Who uses it
Documentary and feature editors
Long, multi-track projects with interview tracks, B-roll, music, ambience, and narration cleanly stacked.
Music video editors
Multi-cam performance plus B-roll plus title tracks plus visual effects layers, all on a real timeline.
Podcast video editors
Per-host video tracks, per-host audio tracks, music bed, intro and outro stings — laid out the way pro audio editors expect.
Vlog and YouTube editors
A-roll on V1, B-roll on V2, broll-overlay text on V3, music on A2 — the standard channel layout.
Wedding and event editors
Ceremony multi-cam stacked across video tracks, gimbal B-roll on top, music bed and ambient audio on independent audio tracks.
Frequently asked questions
Is there a max track count?
There is no software-imposed cap. Performance limits scale with your device's CPU and memory; modern laptops handle 30+ active tracks comfortably.
Does the editor support nested sequences?
Yes. Select a range and choose Nest. The nested compound clip behaves as a single layer for effects, motion, and color.
Can I do J and L audio cuts?
Yes. Drag the audio edge past the video edge of a clip — or use the dedicated J Cut and L Cut commands in the right-click menu.
Will the timeline survive a browser refresh?
Yes. Project state and undo history persist to OPFS, so the timeline is exactly where you left it after a refresh or a crash.
Can I open multiple projects?
Yes. The project picker lists all saved projects and switches between them on demand.
Related editor features
Keyframe Animation With Bezier Curves
Animate position, scale, rotation, opacity, audio levels, and effect parameters over time. Bezier curves, a graph editor, and frame-accurate timing built in.
Frame-By-Frame Editor — Step-Through Precision
Step through your timeline one frame at a time. Single-frame nudges, on-frame markers, frame counter, and per-frame inspection for the precision pro work demands.
Multi-Track Audio Mixer With Auto Ducking
Balance dialog, music, and effects on a real mixer. Per-track levels, pan, solo, mute, and AI-powered ducking that drops music under voice automatically.
Video Trimmer — Frame-Accurate, Keyboard-Driven
Cut and trim video to the exact frame with keyboard precision. Ripple trims, in-out marking, and lossless quick-trim export when you don't need a re-encode.
Try it in the Skrrol AI editor
Skrrol is a browser-native video studio. Open the editor in your browser, drop in your media, and use this feature alongside the rest of the timeline. Free, no install, your files stay on your device.