Show HN: UltraFaceSwap – Multi-face swap for photos, GIFs, and videos (ultrafaceswap.com)

UltraFaceSwap is a new, production-oriented face‑swap service (Show HN) offering high‑fidelity multi‑face replacement across photos, GIFs and video. It uses a unified pipeline—face detection, feature alignment, semantic fusion and light/texture reconstruction—to lock and blend 1–8 faces simultaneously with stable tracking, natural lighting/expression transfer and fewer edge artifacts. Supported inputs include JPG/PNG/WebP and MP4/MOV (H.264); single images typically process in ~20s. Outputs are high‑resolution, watermark‑free, and the platform emphasizes privacy (encrypted temporary storage auto‑deleted in 24h, no model retraining on uploads). Basic features are live now (one‑click uploads/downloads, free trial credits); elastic GPU scaling, batch/queue callbacks and an API are planned. For the AI/ML community this is notable because it packages several applied techniques—multi‑face tracking, semantic fusion and lighting-aware reconstruction—into a single, usable workflow that targets creators and production pipelines. The tool lowers the barrier for multi‑person content creation (social, headshots, entertainment) while surfacing technical constraints (frontal angles, ≥256px face height, reduced quality for extreme domain gaps). It also raises operational and ethical considerations around consent, likeness rights and misuse despite the product’s privacy controls and commercial‑use guidance.