Video Editor

Add videos or photos, split or reorder clips, and add captions and music before exporting MP4. Caption and music times are relative to the entire project; they do not move with reordered clips.

When saving finishes, the finished video appears below. Play it to check, then press "Download video" to get the file. Progress is shown while saving, and the time grows with the video length.

Use Add SRT captions to append a UTF-8 subtitle file. Edit timings, text and styling, then burn captions into MP4 or download SRT separately. SRT does not store text styling. Files must be under 1 MB, with up to 300 captions total and all intervals within the current video duration.

Projects can run up to 30 minutes with 4 GB of total input. Browsers that cannot write straight to a file (Safari, Firefox, mobile) are limited to 10 minutes and cannot save results over 1.2 GB — use desktop Chrome or Edge for long or 4K projects. 4K is greyed out when your device cannot encode it.

Only the tempo changes (0.25× to 4×); the pitch is kept, so voices do not get higher at 2×. Music can sound slightly different at extreme speeds.

Set the clip's fit to "Fill with a blurred background" to fill the bars with a blurred copy of the same clip. "Fill screen" crops instead, and zoom and move let you choose what stays visible.

"Add overlay" places a PNG, JPG, WebP or a video on top. A video plays as picture-in-picture with its sound mixed in, and you choose where in the source it starts and how loud it is. Set position, size, opacity, rotation and time range. The shape can be a circle or have rounded corners, and "Remove a background color (chroma key)" makes a chosen color, such as a green backdrop, transparent. Transparent PNGs stay transparent.

"Mosaic" adds an area in the middle of the frame. Drag it into place in the preview, drag its bottom-right corner to resize it, then choose mosaic or blur and the strength. If the subject moves, put the box on it and press "Follow the subject". The editor looks for that appearance in each following frame and follows it to the end. When the subject is covered or leaves the frame, the playhead jumps to where it was lost; put the box back and press "Track again from here". It follows what is inside the box and does not recognise faces, so a large change in appearance, such as turning around, can lose it. Captions are never covered.

"Record" plays the preview from the current position and places what you say at that point. "Add sound" places up to 50 sound-effect or narration files wherever you want. Each has its own volume and fades, separate from the background music. Turn on "Lower the music under other sound" for the background music and it gets quieter while someone is speaking, then comes back.

Select the clip and pick slow zoom in, slow zoom out, drift left or drift right under "Motion". You can also change the end zoom and position yourself. It works on video clips too.

Your edit is kept in this browser for 30 days. When you come back the editor tells you, and selecting the original videos, photos and music again continues where you left off. Source files are not kept in the browser; only sound you recorded inside the tool is. To continue on another device, move the file from "Save editing project" together with the originals.

Use Trim Video. Starting on a keyframe saves in seconds with no re-encoding and no quality loss. This editor always re-encodes.