视频背景去除器
从摄像头或上传视频中实时去除背景。 替换为绿幕、自定义颜色、图片或模糊。 由 MediaPipe AI 驱动 — 无需上传、无需订阅，30fps。
将视频拖到此处或点击选择
MP4, WebM, MOV…
Real-time AI background removal — in your browser
Paid tools like Remove.bg, Unscreen and similar services charge per minute of video to remove backgrounds. This tool uses MediaPipe Selfie Segmentation — Google's production-grade person segmentation model — running at 30 frames per second on WebGL2 directly in your browser tab. No upload, no per-minute pricing, no account.
两种模式
- Webcam (live) — start your camera and the background is removed in real time as you speak. Hit record to capture a clip as WebM. Great for creating green-screen footage for TikTok, YouTube or Zoom backgrounds.
- Upload a video — drop an MP4 or WebM, click Process, and we go through the video frame by frame replacing the background. Download the result when done.
背景选项
- Green screen (#00ff00) — the universal chroma key color. Import the output into CapCut, DaVinci Resolve, Adobe Premiere, Final Cut Pro or any other editor and key out the green.
- Custom color — pick any solid color from a color picker.
- Custom image — upload a JPG or PNG and we tile/stretch it behind you as the new background.
- Blur — softens the original background (similar to Teams/Zoom background blur) while keeping your face sharp.
- Transparent — outputs a WebM with an alpha channel. Only useful if you're importing into a tool that supports VP9 transparency (most video editors do).
关于 MediaPipe Selfie Segmentation
MediaPipe is a production framework developed by Google, used in Google Meet, Pixel cameras and many Android apps. The Selfie Segmentation model runs at 30fps on a mobile GPU and correctly handles hair, loose clothing, glasses and transparent objects — dramatically better than simple background-subtraction algorithms. The model file (~10 MB) downloads automatically on first use and is cached by your browser.
隐私
Your webcam feed and video files never leave your device. All AI inference happens on your own CPU/GPU via WebGL2. We do not store video, we do not log usage, we do not transmit any media data.
浏览器要求
Requires a browser with WebGL2 support — Chrome 56+, Firefox 51+, Safari 15+, Edge 79+. For the webcam mode, the page must be served over HTTPS (which it is on freelabtools.com). Older iOS Safari versions may have performance limitations.
常见使用场景
- Create TikTok/Reels content without needing a physical green screen.
- Generate green-screen footage for YouTube videos without expensive software.
- Add a professional-looking virtual background to webcam recordings.
- Composite a person onto a custom background for social media posts.
- Remove backgrounds from short product demo videos.
常见问题
- 背景去除器如何工作？
- 使用 AI 模型（在浏览器中运行的机器学习模型）智能识别图片中的前景主体,并自动去除背景。无需手动选择或标记。
- 背景去除器会上传我的图片吗？
- 不会。AI 模型完全在您的浏览器中运行,图片处理在本地完成。您的图片永远不会被上传到任何服务器。
- 支持哪些图片类型？
- 适用于人物照片、产品图片、动物、物体等各种类型。对于边缘清晰、背景简单的图片效果最佳。复杂背景或细碎边缘（如头发）可能需要后续微调。
- 输出图片是什么格式？
- 输出为带透明背景的 PNG 格式图片。您可以将其用于产品展示、合成图片、演示文稿等需要透明背景的场景。
- 背景去除器免费吗？有使用限制吗？
- 完全免费,没有使用限制、无需注册、不添加水印。由于 AI 模型在浏览器中运行,首次使用时需要下载模型文件（约几 MB），之后会被缓存。