Faceswap Endpoint - Legacy Faceswap API

Basic Information

API	Task-type	Model	Description	Input Limitation
Video Faceswap API	face-swap	Qubico/image-toolkit	Swap faces in the target video sequentially using the chosen images.	Supports MP4 only (≤10MB, ≤720p, ≤600 frames).

Face-Swapping Logic Based on Algorithmic Face Order

The face-swapping sequence is determined by the model's algorithmic detection of faces. Generally, faces are labeled numerically in order - for example, 0 represents the leftmost face, 1 represents the next face to the right, and so on. The model assigns order labels to detected faces, and users can generally expect the API to sort faces from left to right by default.

However, if faces in a photo/video are positioned diagonally (e.g., one at the top-left and another at the bottom-right), the model may prioritize them as follows:

Top-left face → Labeled 1 (smaller)

Bottom-right face → Labeled 0 (larger)

Conversely, if one face is at the bottom-left and another at the top-right:

Bottom-left face → Labeled 0

Top-right face → Labeled 1

Examples: How Face Indexing Affects Results

Case 1

swap_faces_index: 0 1
target_faces_index: 1 0
Action: The left face in the source image replaces the right face in the target video, and the right face in the source replaces the left face in the target.

Case 2

swap_faces_index: 0 1
target_faces_index: 0 1
Action: The left face in the source replaces the left face in the target; the right face in the source replaces the right face in the target.

Pricing

Task-type	Pricing
face-swap	$0.004 per frame

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{
    "code": 200,
    "data": {
        "task_id": "7a7ba527************1974d4316e22"
    },
    "message": "success"
}

Video Faceswap

Basic Information#

Face-Swapping Logic Based on Algorithmic Face Order#

Examples: How Face Indexing Affects Results#

Case 1#

Case 2#

Pricing#

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