Vace Video Joiner

Playground

VACE Video Joiner seamlessly joins multiple video clips into one using AI-powered transition generation. Upload 2 to 4 videos and get a smoothly joined result. Ready-to-use REST inference API, no coldstarts, affordable pricing.

Features

VACE Video Joiner

VACE Video Joiner merges multiple video clips into a single seamless output. Upload two or more videos and the model joins them together in order — no editing software required.

How to Use

Upload your videos — provide two or more clips via URL or drag-and-drop. Click Add Item to add more.
Submit — the model joins the clips in the order they were added.
Download your merged video.

Pricing

$0.20 per join. Joining 2 videos costs $0.20, joining 3 videos costs $0.40, and so on.

Best Use Cases

Content assembly — Combine multiple clips into a single continuous video for social media or presentations.
Scene stitching — Join separately generated or recorded scenes into one cohesive output.
Highlight reels — Merge selected clips into a single highlight video without manual editing.

Notes

videos is the only required field. Upload at least 2 clips to perform a join.
Clips are joined in the order they are added — arrange them accordingly before submitting.
Ensure video URLs are publicly accessible if using links rather than direct uploads.

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/vace-video-joiner" \
--header "Content-Type: application/json" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}" \
--data-raw '{}'

# 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
videos	array	Yes	-	2 ~ 4 items	Array of video URLs to join (minimum 2, maximum 4).

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

Uno Vibevoice