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Private browser utility / Social & Creator

Green Screen Video Remover

Runs entirely in your browser - no upload, no sign-up.

Live workspaceLocal processing
Choose a green screen clip to remove its background

Your source video is processed in this browser tab and is never uploaded. The FFmpeg engine is downloaded on first use.

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chroma key video / browser utility
01 / Overview

How do I remove a green screen from a video?

Use this green screen video remover to choose a local clip, select green, blue, or a custom backdrop color, then tune similarity and edge softness. A frame preview shows the transparent result before the browser creates a VP8 WebM with alpha. Your source video is never uploaded.

02

How to use

  1. 01
    Choose a short video

    Drop an MP4, MOV, WebM, or another common video clip that is 60 seconds or shorter.

  2. 02
    Select the screen color

    Start with Green or Blue, or use the color control for another solid backdrop.

  3. 03
    Refine the matte

    Play or scrub the source while adjusting Similarity and Edge softness in the transparent frame preview.

  4. 04
    Export transparent WebM

    Choose resolution and quality, start the local export, then download the VP8 WebM when it finishes.

03

Who it's for

  • Video creators can remove an evenly lit green backdrop before layering a presenter over a scene in a compatible editor.
  • Teachers and trainers can prepare transparent speaker clips for slides, demos, and course videos.
  • Product teams can turn green-screen recordings into reusable overlays for announcements and walkthroughs.
  • Motion designers can create a quick WebM alpha asset without sending unfinished footage to a server.

This chroma key video editor uses FFmpeg's RGB color-key filter in your browser. Pixels near the selected key color become transparent, while edge softness creates a gradual alpha transition around fine details. The final WebM uses VP8 because standard MP4 video does not carry transparency in this workflow.

The WebAssembly engine downloads only after you start an export. Encoding then runs locally in the current tab. A 60-second limit and device-aware file cap reduce the chance of exhausting browser memory.

FAQ

Is my green screen video uploaded?

No. The source stays in a browser file object and is processed by a local WebAssembly build of FFmpeg. The browser downloads engine files from a public CDN on first use, but your video is not sent with that request. Closing or reloading the tab clears the working files.

Is this green screen video remover free?

Yes. You can preview the chroma key, adjust the key color, similarity, edge softness, resolution, and quality, then export and download without an account or watermark. Practical limits come from the memory and processing power available to your browser rather than a server upload quota.

What are the video length and file size limits?

A clip can be up to 60 seconds. The conservative file cap is 100 MB on mobile or low-memory devices, 250 MB on a typical desktop, and up to 500 MB on a high-memory desktop. Transparent WebM encoding is demanding, so shorter 720p clips are the safest starting point.

What does chroma key similarity mean?

Similarity controls the RGB color-distance threshold around the selected key. A low value removes only colors very close to the chosen green, blue, or custom color. A higher value handles uneven lighting but can also remove foreground pixels with a similar hue, so increase it gradually while watching the preview.

What does edge softness do in a chroma key?

Edge softness blends alpha from transparent to opaque outside the similarity threshold. A small value can smooth hair and anti-aliased edges that would otherwise look jagged. Too much softness creates a faint or translucent rim, so use the lowest value that removes a hard cutout.

Why does the result download as WebM instead of MP4?

The result needs an alpha channel to preserve transparent pixels. VP8 in a WebM container supports that workflow, while ordinary H.264 MP4 export does not preserve transparency. Import the WebM into an editor that supports transparent WebM. Some browser video players may preview transparent areas as black.

Will this remove a background without a green screen?

Only when the background is a fairly uniform color. Chroma key removes pixels by color distance; it does not recognize people or objects like an AI segmentation model. For the cleanest result, use an evenly lit green or blue screen with separation between the subject and backdrop.