Video Background Replacer

Objectives

• Segment the foreground subject from the background in real time
• Replace backgrounds with images, videos, or solid colors
• Refine segmentation edges to reduce halo artifacts
• Maintain consistent segmentation across moving frames
• Support both webcam input and uploaded video files

Hints

• MediaPipe Selfie Segmentation runs efficiently in the browser
• Apply a slight blur to the segmentation mask edges for smoother blending
• Use WebGL for compositing the foreground and new background at 30fps

Resources

• ai.google.dev/edge/mediapipe/solutions/vision/image_segmenter
• developer.mozilla.org/en-US/docs/Web/API/WebGL_API

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