Memory between frames
Robust Video Matting keeps a hidden state across the clip, which is the structural fix for edge flicker rather than a smoothing filter applied afterwards.
Free Tool
Video Background Remover
Green-screen results without a green screen. The People model runs Robust Video Matting, a recurrent network that tracks the subject across frames, so edges stay stable instead of flickering. For products, pets, and everything else, two per-frame models cover any subject. Export a genuinely transparent WebM (real video alpha you can drop into any editor), a composited MP4 with a new solid, blurred, or image background, and keep the original audio. Every frame is processed on your device: the clip never leaves your browser.
Flicker-free people mattingAny-subject AI tiersTrue alpha WebM exportComposited MP4 exportAudio preservedNo uploadFree to use
Drop video files here
MP4, WebM, MOV, AVI · max 60s · processed at up to 1280px · never uploaded
Settings
Robust Video Matting, built for people and portraits. Tracks across frames, so edges stay rock-stable (no flicker). ~15 MB model, fastest of the three.
WebM: transparent VP8 alpha. Best for editing software.
Result proof
Motion proof, alpha proof and audio proof
01
Input
Source clip + audio
02
Local pass
Tracked matte per frame
03
Result
Alpha WebM or composited MP4
How to verify it: Play the full result through hair and fast movement, place alpha output over both light and dark colours, and confirm the original audio remains in sync.
Temporal stability
The edge has to hold still between frames
Running a still-image matte on every frame independently is what makes cutout video shimmer: each frame guesses the boundary slightly differently, and the eye reads that as a crawling edge. The People path uses a recurrent model that carries state forward, so the boundary is a continuation of the last frame rather than a fresh guess.
yuva420p
True alpha WebM
Any subject, still stable
Products, pets and objects fall back to per-frame segmentation with temporal smoothing, less stable than the recurrent path, but far steadier than raw per-frame output.
Real alpha, not a matte on black
The WebM carries an actual alpha plane, so an editor reads the transparency directly instead of you keying out a baked-in background.
Know before you process: Sixty seconds at up to 1280px is the reliable bound, every frame runs inference and is then re-encoded on your device. Trim first and process the section you need.
What people use this for
Talking-head video without a green screen
Presenters, course modules and product explainers filmed against whatever wall was available. The People model is built for exactly this case, and it is also the fastest of the three, a recurrent network is doing less work per frame than a full segmentation pass, not more.
Overlays for social and streaming
A transparent WebM drops straight onto a scene in OBS or a timeline in an editor with no keying step. Because the alpha is real, semi-transparent edges composite correctly over a busy background instead of showing a hard fringe.
Product clips on a clean backdrop
Turntable and unboxing footage shot on a cluttered desk, recomposited onto a solid colour so a catalogue stays visually consistent. Use an any-subject tier here, Robust Video Matting is trained on people and will not reliably find a kettle.
Replacing a distracting background
Blur the original rather than removing it entirely when the room gives useful context but pulls focus. That path composites to MP4, which plays everywhere, and keeps the original audio track intact.
Where it struggles
- Motion blur on fast movement. A hand waved quickly has no defined edge in the source frame, so no matte can find one. Slower movement, or a higher shutter speed when filming, is the only real fix.
- Subjects that match the background. A dark jacket against a dark room gives the model almost no signal at the boundary. A little separation in tone when filming is worth more than any setting here.
- Hair against fine detail. Individual strands over a textured background are the hardest case in matting generally, not just here. The Best tier helps; it does not solve it.
- Multiple people entering and leaving. The recurrent model tracks the subject it started with. A second person walking in mid-clip may be picked up late.
- Long clips. Sixty seconds is a memory bound, not a licence gate. Trim first (the video editor can do it) and process the section you need.
How it works
- Drop a clip up to 60 seconds (MP4, WebM, MOV, or AVI)
- People: Robust Video Matting (~15Â MB, one-time download) carries memory between frames, the structural fix for edge flicker
- Any subject: ORMBG (fast) or BiRefNet (best) segment each frame, with temporal smoothing
- Frames are processed at up to 1280px and assembled by ffmpeg in your browser, transparent WebM or H.264 MP4 with your chosen background, original audio kept
Frequently asked questions
Which model should I pick?
People, if your subject is a person (talking-head, presenter, dance clip), Robust Video Matting gives the most stable edges and is also the fastest. Pick an Any-subject tier for products, animals, or objects: Fast for speed, Best for the sharpest edges and hair.
Is the transparent WebM really transparent?
Yes, it is encoded with an alpha plane (yuva420p), not a black or checkerboard background baked in. Chromium browsers and compatible video editors read the transparency directly. For broader playback compatibility, use a composited MP4.
Why is there a 60-second limit?
Every single frame runs AI inference and is then re-encoded on your device. Sixty seconds at up to 1280px is the bound that finishes reliably without exhausting browser memory. Trim longer footage first (the video editor can do that) and process the section you need.
Does my video get uploaded anywhere?
No. The models download to your browser once and run locally; frames, audio, and the finished file never touch a server. You can even process offline after the first model download.
Can I put a new background behind the subject?
Yes, choose a solid colour or a blurred version of the original under Background, and the tool composites it into an MP4. For full scene control, export the transparent WebM and layer it in the video editor.
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