Video Face Swap
Playground
Try it on WavespeedAI!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
Video Face Swap
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
| Parameter | Required | Description |
|---|---|---|
| video | Yes | Source video file (upload or public URL). Max 10 minutes. |
| face_image | Yes | Reference face image to swap in (upload or public URL). |
| target_index | No | Select which face to swap when multiple faces exist. 0 = largest face, 1 = second largest, etc. Default: 0. |
How to Use
- Upload your video — drag and drop or paste a public URL.
- Upload the face image — provide the face you want to swap in.
- Set target index (optional):
- Use target_index to select a specific face (0 = largest face).
- Run — click the button and wait for processing.
- Download — preview and save your swapped video.
Pricing
Per-second billing with a 5-second minimum. Maximum video length: 10 minutes.
| Duration | Cost |
|---|---|
| Per 5 seconds | $0.05 |
| Per second | $0.01 |
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
| Video Length | Calculation | Total Cost |
|---|---|---|
| 3s | 5s minimum × $0.01 | $0.05 |
| 15s | 15 × $0.01 | $0.15 |
| 1m 30s (90s) | 90 × $0.01 | $0.90 |
| 5m (300s) | 300 × $0.01 | $3.00 |
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
# Submit the task
curl --location --request POST "https://api.wavespeed.ai/api/v3/wavespeed-ai/video-face-swap" \
--header "Content-Type: application/json" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}" \
--data-raw '{
"target_index": 0
}'
# Get the result
curl --location --request GET "https://api.wavespeed.ai/api/v3/predictions/${requestId}/result" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}"
Parameters
Task Submission Parameters
Request Parameters
| Parameter | Type | Required | Default | Range | Description |
|---|---|---|---|---|---|
| video | string | Yes | - | The video that contains the face to be replaced. | |
| face_image | string | Yes | - | - | The face image as reference. |
| target_index | integer | No | - | 0 ~ 10 | 0 = largest face. To switch to another target face - switch to index 1, e.t.c. |
Response Parameters
| Parameter | Type | Description |
|---|---|---|
| code | integer | HTTP status code (e.g., 200 for success) |
| message | string | Status message (e.g., “success”) |
| data.id | string | Unique identifier for the prediction, Task Id |
| data.model | string | Model ID used for the prediction |
| data.outputs | array | Array of URLs to the generated content (empty when status is not completed) |
| data.urls | object | Object containing related API endpoints |
| data.urls.get | string | URL to retrieve the prediction result |
| data.has_nsfw_contents | array | Array of boolean values indicating NSFW detection for each output |
| data.status | string | Status of the task: created, processing, completed, or failed |
| data.created_at | string | ISO timestamp of when the request was created (e.g., “2023-04-01T12:34:56.789Z”) |
| data.error | string | Error message (empty if no error occurred) |
| data.timings | object | Object containing timing details |
| data.timings.inference | integer | Inference time in milliseconds |
Result Request Parameters
| Parameter | Type | Required | Default | Description |
|---|---|---|---|---|
| id | string | Yes | - | Task ID |
Result Response Parameters
| Parameter | Type | Description |
|---|---|---|
| code | integer | HTTP status code (e.g., 200 for success) |
| message | string | Status message (e.g., “success”) |
| data | object | The prediction data object containing all details |
| data.id | string | Unique identifier for the prediction, the ID of the prediction to get |
| data.model | string | Model ID used for the prediction |
| data.outputs | string | Array of URLs to the generated content (empty when status is not completed). |
| data.urls | object | Object containing related API endpoints |
| data.urls.get | string | URL to retrieve the prediction result |
| data.status | string | Status of the task: created, processing, completed, or failed |
| data.created_at | string | ISO timestamp of when the request was created (e.g., “2023-04-01T12:34:56.789Z”) |
| data.error | string | Error message (empty if no error occurred) |
| data.timings | object | Object containing timing details |
| data.timings.inference | integer | Inference time in milliseconds |