Video Face Swap

Video Face Swap

Playground

Swap faces in any video by uploading a video and an image — perform unlimited, seamless face replacements quickly. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing.

Features

Seamlessly swap faces in videos with just a few clicks. Upload your video and a reference face image, and the model will intelligently replace faces while preserving natural motion, lighting, and expressions. No complex editing software required.

Why It Looks Great

• Natural blending: Automatically matches skin tone, lighting, and shadows for seamless face integration.
• Expression preservation: Retains the original facial movements, emotions, and lip sync from the source video.
• Temporal consistency: Minimizes flickering and artifacts across frames for stable, realistic results.
• Multi-face support: Handle videos with multiple people — target specific faces by index.
• High fidelity output: Maintains video quality with sharp facial details and smooth edges.

Parameters

How to Use

1. Upload your video — drag and drop or paste a public URL.
2. Upload the face image — provide the face you want to swap in.
3. Set target index (optional):

• Use target_index to select a specific face (0 = largest face).
• Use target_gender to only swap faces of a specific gender (male / female).

4. Run — click the button and wait for processing.
5. Download — preview and save your swapped video.

Pricing

Per-second billing with a 5-second minimum. Maximum video length: 10 minutes.

Billing Rules

• Minimum charge: 5 seconds ($0.05)
• Per-second rate: $0.01
• Billed duration: Video length in seconds (rounded up), with 5-second minimum
• Total cost: Billed duration × $0.01

Examples

Best Use Cases

• Content Creation — Create entertaining face-swap videos for social media and viral content.
• Film & Video Production — Replace stunt doubles or create special effects without expensive post-production.
• Marketing & Advertising — Personalize video ads with localized faces for different markets.
• Entertainment & Memes — Generate fun, shareable content with celebrity or character face swaps.
• Privacy Protection — Anonymize faces in videos for privacy-sensitive content.

Pro Tips for Best Results

• Use a clear, front-facing reference image with good lighting for the best match.
• Source videos with stable, well-lit faces produce smoother results.
• For videos with multiple people, use target_index to precisely control which face gets swapped.
• Keep the reference face angle similar to the faces in the video for more natural blending.

Notes

• If using a URL for the face image, ensure it is publicly accessible. A preview thumbnail in the interface confirms successful loading.
• Processing time varies based on video length and current queue load.
• For videos longer than 10 minutes, split into segments and process separately.

Authentication

For authentication details, please refer to the Authentication Guide.

API Endpoints

Submit Task & Query Result

set -euo pipefail

export WAVESPEED_API_KEY="your-api-key"

REQUEST_BODY=$(cat <<'JSON'
{
  "video": "https://interactive-examples.mdn.mozilla.net/media/cc0-videos/flower.mp4",
  "face_image": "https://interactive-examples.mdn.mozilla.net/media/cc0-images/painted-hand-298-332.jpg",
  "target_index": 0,
  "target_gender": "all"
}
JSON
)

# 1. Submit the prediction.
SUBMIT_RESPONSE=$(curl --silent --show-error --fail-with-body \
  -X POST "https://api.wavespeed.ai/api/v3/wavespeed-ai/video-face-swap" \
  -H "Authorization: Bearer ${WAVESPEED_API_KEY}" \
  -H "Content-Type: application/json" \
  -d "${REQUEST_BODY}")

TASK=$(printf '%s' "${SUBMIT_RESPONSE}" | jq 'if type == "object" and has("data") then .data else . end')
PREDICTION_ID=$(printf '%s' "${TASK}" | jq -r '.id // empty')
if [ -z "${PREDICTION_ID}" ]; then
  printf 'Submission response did not contain a prediction id
' >&2
  exit 1
fi
RESULT_URL=$(printf '%s' "${TASK}" | jq -r '.urls.get // empty')
if [ -z "${RESULT_URL}" ]; then RESULT_URL="https://api.wavespeed.ai/api/v3/predictions/${PREDICTION_ID}/result"; fi

# 2. Poll until the prediction finishes.
while true; do
  RESPONSE=$(curl --silent --show-error --fail-with-body \
    "${RESULT_URL}" \
    -H "Authorization: Bearer ${WAVESPEED_API_KEY}")
  RESULT=$(printf '%s' "${RESPONSE}" | jq 'if type == "object" and has("data") then .data else . end')
  STATUS=$(printf '%s' "${RESULT}" | jq -r '.status // empty')

  case "${STATUS}" in
    completed) printf '%s\n' "${RESULT}" | jq '.outputs'; break ;;
    failed|cancelled|timeout) printf '%s\n' "${RESULT}" | jq . >&2; exit 1 ;;
    created|processing) sleep 2 ;;
    *) printf 'Unexpected status: %s
' "${STATUS}" >&2; exit 1 ;;
  esac
done

Parameters

Task Submission Parameters

Request Parameters

Response Parameters

Result Request Parameters

Result Response Parameters