Screen Recording Editor (Zoom, Backgrounds, Webcam, Captions)
Turn a raw screen recording into a polished demo — zooms, backgrounds, blur and captions.
Click the strip to move the playhead; drag a zoom, blur or cut to move it, its ends to change its length. Everything can also be set in the fields on the right.
Export
About the Screen Recording Editor (Zoom, Backgrounds, Webcam, Captions)
Open a screen recording — from the Screen Recorder or any MP4, WebM, MOV or MKV — and make it look like a finished product demo: put it on a gradient background with rounded corners and a shadow, add smooth zooms that glide in and out (the page can suggest them from where the screen changes), pixelate passwords and e-mail addresses, show click ripples, add a webcam bubble, burn in captions from an SRT or VTT file, trim and cut out mistakes, and list chapters for YouTube.
The preview shows every change as you make it, and the export renders the edited video on your device with WebCodecs — MP4 up to 4K at 60 fps, or an animated GIF for docs and chats. Nothing is uploaded.
How to use it
- Choose your recording. It plays in the preview; the strip under it shows the trim, cuts, zooms, blurs, clicks, captions and chapters.
- In Look, pick a background, the padding, the corner radius and the shadow, and the shape and size of the video (16:9, 9:16, square …).
- Add zooms (or press Suggest zooms), blur boxes (draw them on the preview), click marks, cuts and chapters at the playhead, and fine-tune them on the strip or in the fields.
- Optionally add a webcam clip and a captions file, then Export as MP4 or GIF, watch the result and download it.
Examples
A 1920 × 1080 recording · Ocean background · 6% padding · rounded corners · Suggest zooms
A 1080p MP4 where the recording floats on a gradient with a soft shadow, and the view eases into the form being filled in and back out
A blur box over the e-mail field from 0:12 to 0:20
The field is pixelated for those eight seconds, and stays covered while a zoom is on it
Cuts of 6 s at 0:20 and 8 s at 1:30 · chapters “Intro” at 0:00, “Set-up” at 0:41 and “Publishing” at 2:05 in the recording
The MP4, plus a chapter list for the description, timed to the edited video: “0:00 Intro / 0:35 Set-up / 1:51 Publishing”
Zooms and the suggestions
A zoom has a start, an end, a centre and a scale (1.2× to 4×). The view eases in over its first 0.6 seconds and out over its last, and stays inside the recording, so it never shows an edge. Suggest zooms looks at the whole recording four times a second, finds stretches where the screen changes in one small area — typing in a field, opening a menu, moving the pointer around one part — and proposes a zoom centred on it; whole-screen changes such as page loads and scrolling get none. They are suggestions: play them through and adjust or delete them.
A recording made in a browser does not contain the pointer’s position, so the page cannot follow or smooth the cursor. To show where you clicked, pause there and mark the spot on the preview: each mark shows an expanding ripple.
Look, webcam and captions
The background can be one of five gradients, a plain colour, your own picture or nothing; padding, corner radius and shadow scale with the video. The output can keep the recording’s shape or become 16:9, 9:16, 1:1 or 4:5, at 720p, 1080p, 1440p or 4K, at the recording’s frame rate or 24, 30 or 60 fps.
A webcam clip recorded separately appears as a circle or rounded square in a corner, mirrored if you like; if it started earlier or later than the screen recording, set the offset until your lips match your voice. Captions come from an SRT or WebVTT file timed to the recording — for example one made with the Audio to Text Transcriber — and are drawn into the picture with a dark box for legibility.
Trim, cuts and chapters
Trim the start and end, and cut out any number of stretches: the export skips them in both picture and sound, and everything else (zooms, blurs, captions) keeps its place in the recording. The chapter list is written in the edited video’s time, ready to paste into a YouTube description, and the page checks YouTube’s rules: the first chapter at 0:00, at least three chapters, and each at least 10 seconds long (YouTube Help).
Export
The edited video is MP4 with H.264 video and AAC sound (WebM where the browser cannot encode MP4), with the recording’s sound cut to match. In Chrome and Edge on a computer, long or 4K exports can be written straight to a file as they are made. The GIF is up to 60 seconds long, 480–800 pixels wide at 10–15 frames a second, with one colour palette and only the changed pixels stored in each frame — which suits screen content.
Limitations
- No cursor tracking: a browser recording has no pointer data, so cursor smoothing and automatic click detection are not possible; click marks are placed by hand.
- Exporting needs WebCodecs (a current Chrome, Edge or Safari, or Firefox on a computer). 4K at 60 fps needs a fast computer; a phone may only manage 1080p at 30 fps.
- The preview plays files the browser can play; others (for example HEVC in some browsers) show still frames while you edit, and still export.
- Captions are imported, not transcribed here, and timed to the original recording. Blur boxes are rectangles that stay where you draw them on the screen; they do not follow moving content.
- Projects are not saved: they live in this tab until you close it.
Privacy
Everything happens in your browser. What you enter or open here is not uploaded or stored by MySmartCoPilot.
Frequently asked questions
Is this like Screen Studio?
For the look, yes: backgrounds, rounded corners, shadows, smooth zooms and a webcam bubble, in any browser on Windows, macOS, ChromeOS or Linux. It cannot follow the cursor, because a browser recording has no pointer data — zooms are suggested from screen activity or placed by you.
How do I hide a password or e-mail address?
Open Blur, add a blur box at the playhead, press Draw the box on the preview and drag over the part to hide, then set when it starts and ends (or Whole video). It is pixelated in the export.
Can I make a vertical video for Shorts or Reels?
Yes: in Look, choose the 9:16 shape. The recording sits in the middle with the background around it; add zooms so the important part fills more of the frame.
Why is there no automatic captioning?
This page draws captions from a file. Make the file with the Audio to Text Transcriber (it runs on your device too), then open it in Captions.
Is my recording uploaded?
No. The recording is decoded, edited and encoded inside your browser; nothing leaves your device.