Loading tool…
Some edits need more than one trim: a few clips in the right order, a title card, a soft crossfade and a music bed underneath. This editor gives you a simple three-track timeline for exactly that, and renders the finished MP4 on your own computer.
Processing locally on your device
Overview
The editor is built around three tracks. The video track holds your clips and still images in order, end to end, and defines the length of the finished video. The titles track holds text items that appear over the picture at a chosen time for a chosen duration. The audio track takes one music or voiceover file with its own start time, volume and fades. Editing is non-destructive: your source files are never changed, and the project is just a list of in and out points, positions and settings until you export.
Every clip can be trimmed by dragging its edges or typing exact in and out points, split in two at the playhead, reordered by dragging it along the track or with the arrow buttons, and deleted. Photos become clips with a duration you set, four seconds by default. At each junction you can keep a hard cut or choose a crossfade, dissolve, dip to black, wipe or slide, up to three seconds long. A transition overlaps the two neighbouring clips, so it shortens the total running time by its own length, and the editor shortens it automatically if a clip is too short to carry it. Undo and redo cover every change.
Export runs ffmpeg compiled to WebAssembly in a background worker, so nothing leaves your device. Each clip is cut to its in and out points, scaled and letterboxed to the project size (1920 × 1080, 1280 × 720, 1080 × 1920 vertical or 1080 × 1080 square), converted to 30 fps and given 48 kHz stereo audio, with silence added for photos and clips that have no sound. Hard cuts are joined with ffmpeg’s concat filter and transitions with xfade and acrossfade. Titles are drawn with the same text engine and styles as our Layer Editor, saved as transparent PNGs at full output resolution and overlaid only during their time window. The music is faded, delayed to its start time and mixed with the clip sound, which you can turn down from 100% to 0%. The result is an H.264 and AAC MP4 that plays almost everywhere.
Be realistic about speed. The engine runs on a single CPU core and is several times slower than desktop software, because every frame is decoded and re-encoded. A one-minute 720p project typically takes one to a few minutes on a recent laptop, and 1080p takes roughly twice as long. The preview is deliberately approximate: it switches between your clips in real time and shows titles and music, but it doesn’t render transitions. Those appear only in the exported file. The editor suits short projects such as social clips, product demos and highlight reels rather than long, multi-camera productions.
| Transition | What it looks like | Good for |
|---|---|---|
| Cut | Instant change, no overlap | Most edits, fast-paced social clips, dialogue |
| Crossfade | The first clip fades smoothly into the next | Change of place or time, relaxed pacing |
| Dissolve | Pixels of the next clip scatter in | Dreamy or nostalgic moments, slideshows |
| Dip to black | Fade to black, then up into the next clip | The end of a chapter, a big jump in time |
| Wipe | The next clip is revealed from the right | Lighthearted edits, before-and-after |
| Slide | The next clip pushes the previous one out | Energetic montages, product feature lists |
Drop your video clips, photos and a music file onto the page. Visuals go onto the video track in order and the first audio file becomes the music track.
Pick the output size in Project settings, then drag clips to reorder them and drag their edges, or type in and out points, to trim.
Move the playhead and press S to split a clip, select a clip to add a transition from the previous one, and use Add title for text overlays.
Select the audio track to set its start time, volume and fades, and lower the original clip audio if the music should lead.
Choose Fastest, Balanced or High quality and click Export MP4, then preview and download the finished video.
Use cases
Choose 1080 × 1920, drop in three or four phone clips, trim the dead time at the start of each, and add a bold Outline title over the first two seconds. A music track with a two-second fade-out finishes the clip without a desktop app.
Combine a screen recording, a few product photos held for four seconds each and a Lower third title naming the feature. Turn the original audio down to 0% and lay a voiceover recording on the audio track instead.
Split long phone videos into the good moments, reorder them, and join them with short crossfades. Lower the clip sound to about 20% so the music carries the reel while voices and laughter still come through.
Mix stills and short clips on one track with dissolves between them, add a title card at the start and an ending caption, and export a square 1080 × 1080 file for a feed post or a family group chat.
Pro tips
Answers to common questions about the timeline editor.
No. This editor deliberately has one main video track, one titles track and one audio track. For a video over another video use Picture-in-Picture, and for more complex mixes combine the tracks in stages with the other tools.
The preview plays your original files directly and simply switches between them, which keeps it smooth on ordinary laptops. Transitions, letterboxing and the exact audio mix are rendered by ffmpeg during export, so check the downloaded MP4 for the final look.
They are scaled to fit inside the frame and padded with black bars, never cropped or stretched. A vertical phone clip in a 16:9 project gets bars at the sides; a landscape clip in a 1080 × 1920 project gets bars above and below.
No. The project exists only in the open tab, with undo and redo while you work. Your source files stay on your disk and are never uploaded, so export the video before closing the page.
It depends on the total length, the resolution and your processor. Everything is decoded and re-encoded on one CPU core, so a minute of 720p often takes one to three minutes and 1080p about twice that. The Fastest setting uses the ultrafast encoder preset to save time at a slightly larger file size.
The video track sets the length of the export. Music that runs past the last clip is cut off at the end, and the fade-out is applied before that point, so the video never ends abruptly in the middle of a loud passage.
No. ToolEnhancer processes files on your own device inside the browser. They are never sent to, stored on or seen by our servers.
Yes. The timeline editor is free to use with no sign-up, no watermarks and no daily limits.