Choose an MP4 where the target face is visible for as much of the clip as possible. Fast turns, severe motion blur, tiny faces, hands covering the face, or long periods out of frame can reduce consistency. A clear, front-facing source image gives the replacement workflow stronger identity information.
The displayed credit price is calculated from rounded video duration with the configured minimum billed duration. The page is fixed to the video face-swap product and does not accept an image target. Jobs run asynchronously and failed processing automatically refunds the charged credits.