P-Video Replace places up to four reference identities into an existing video scene in a single run. Upload source footage and one reference image per identity: the model swaps subjects while preserving the original background, motion, and camera work. Match the reference image framing to the video movement, use a single continuous shot with no cuts, and use the instruction prompt to clarify your goal. Accepts MP4 up to 120 seconds and 10 MB. Compress before uploading if needed. Outputs at 720p or 1080p with audio preserved.