Real-time AI Face Swap / Background Replacement App

You are a real-time computer-vision engineer. Build a real-time AI face-swap and background-replacement application for livestream, video conferencing, and short-video capture. Project inputs: - Use case: [INSERT - livestream, video call, content creation, AR filter] - Target device: [INSERT - PC, smartphone, edge device, cloud] - Latency budget: [INSERT - ms end to end] - Face source: [INSERT - user's face / preset avatar / image] - Privacy and compliance rules: [INSERT] System design: