Character Swap
Introduction to Character Swap
Character Swap is an AI-powered studio for high-fidelity face replacement in video. It unifies a range of character-swap models, covering identity-preserving diffusion, face reenactment, and fast renderers, into one streamlined workflow. Upload the face image you want to swap in and a target video, choose what to preserve (pose, lighting, expression), and Character Swap produces a seamless, photorealistic replacement with consistent identity, natural motion, and production-grade exports.
What makes Character Swap stand out
Character Swap is a production-ready, multi-model face replacement system that delivers photorealistic, identity-consistent swaps in video. It unifies face reenactment, ID-preserving diffusion, and fast renderers to produce natural motion and clean composites. Key capabilities:
- Identity consistency: preserves facial structure, skin tone, and hairline boundaries.
- Motion fidelity: tracks head pose, expressions, and eye gaze.
- Lighting adaptation: matches scene lighting and color for seamless blends.
- Temporal stability: reduces flicker and jitter across frames.
- Fine control: lock or relax pose, expression, and style constraints.
- Speed tiers: quick previews and high-quality production renders.
- Formats: export ProRes/MP4; preserve background or include alpha.
- Workflow: batch runs, checkpoints, and reproducible settings.
Usage guide for Character Swap
Prepare one high-quality face image (frontal, sharp) and a target video. Choose models and constraints depending on your goal. Examples:
- One-to-one swap: replace the actor's face while preserving performance.
- Beauty/commercial: keep makeup and brand style; soften background changes.
- Reenactment: drive expressions from the source image with natural motion.
- Style-preserving: hold pose and lighting; allow subtle expression transfer.
Pro tips:
- Use 1024px+ face crops with clear eyes; avoid heavy occlusions.
- Start with a fast preview to validate alignment, then upscale for final.
- Enable color transfer when scene lighting differs strongly.
- Add face restoration only if the source is noisy; otherwise keep off.
- Pin critical frames (entrance, close-ups) to stabilize edits.
Examples of Character Swap Creations
Frequently Asked Questions
What is Character Swap and how does it work?
Character Swap is an AI-powered studio for high-fidelity face replacement in video. Character Swap works by combining advanced models for identity preservation, face reenactment, and fast rendering into one streamlined workflow.
What are the main features offered by Character Swap?
Character Swap provides identity-preserving diffusion, realistic face reenactment, and photorealistic rendering. It also lets you control pose, lighting, and expressions to fine-tune the output.
How much does Character Swap cost to use?
Character Swap operates on a dollar-based system inside Runcomfy’s AI Playground. Users get free trial usd, and additional usage of Character Swap requires spending credits according to the Generation policy.
Who is Character Swap designed for?
Character Swap is ideal for creators, filmmakers, editors, and social media users who need high-quality face replacement. Character Swap helps anyone who wants seamless, production-grade identity swaps in video.
Does Character Swap produce realistic output?
Yes, Character Swap is built to deliver photorealistic results with natural motion and consistent identity. The Character Swap workflow ensures high-fidelity preservation of expressions, lighting, and overall realism.
What inputs and formats does Character Swap support?
Character Swap requires a face image to swap in and a target video. Character Swap then exports production-ready video files with stable and consistent face replacement.
Is Character Swap accessible on mobile devices?
Yes, Character Swap is available through its website on the Runcomfy Playground, and Character Swap works smoothly on modern mobile browsers after logging in.
Are there any limitations to using Character Swap?
Character Swap depends on clear input images and videos for best results, and some complex motion or occlusions may require fine-tuning. Character Swap also requires credits to run generations.
How can I give feedback or report issues with Character Swap?
If something seems off or you have suggestions, you can send feedback to hi@runcomfy.com. The Character Swap team uses user input to improve the experience.