Video Face Swap API Documentation

Overview

PiAPI's Video Face Swap service enables face replacement in videos using advanced facial recognition and swapping technology. The service supports both single and multiple face swapping operations within MP4 videos.
The face-swapping sequence is determined by the model's algorithmic detection of faces. 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

Bottom-right face → Labeled 0

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

Cost per frame: $0.004

Pricing is calculated based on the total number of frames processed

Model Information

Model Name: Qubico/video-toolkit

Task Type: face-swap

Capabilities:

Single and multiple face swapping

Support for indexed face selection in both source and target

Processing of standard MP4 videos

Technical Limitations

File Format: MP4 only

File Size: Maximum 10MB

Resolution: Maximum 720p

Frame Limit: Maximum 600 frames per video

Image Size Limit: Maximum 2048 x 2048 resolution

Request

Header Params

x-api-key

string

optional

your api key

Body Params application/json

model

enum<string>

required

Model name for face swapping

Allowed value:

Qubico/video-toolkit

task_type

enum<string>

required

Task type for face swapping

Allowed value:

face-swap

input

object

required

swap_image

string <uri>

required

URL of the image containing the face(s) to swap

target_video

string <uri>

required

URL of the target MP4 video for face swapping

swap_faces_index

string

optional

Index(es) of faces to use from the swap image (e.g., "0" or "1,0")

target_faces_index

string

optional

Index(es) of faces to replace in the target video (e.g., "0" or "0,1")

Example

Responses

🟢200OK

application/json

Successful response

Body

code

enum<integer>

required

Response status code

Allowed value:

200

message

string

required

Response message

data

object

required

task_id

string <uuid>

required

Unique task identifier

status

string

required

Current status of the task

output

object

optional

Example

{
  "code": 200,
  "message": "string",
  "data": {
    "task_id": "736fde4d-9029-4915-8189-01353d6982cb",
    "status": "string",
    "output": {
      "video_url": "http://example.com"
    }
  }
}

Video Faceswap

Video Face Swap API Documentation

Overview

Examples: How Face Indexing Affects Results

Case 1

Case 2

Pricing

Model Information

Technical Limitations

Request

Request samples

Responses

Video Faceswap

Video Face Swap API Documentation#

Overview#

Examples: How Face Indexing Affects Results#

Case 1#

Case 2#

Pricing#

Model Information#

Technical Limitations#

Request

Request samples

Responses

Video Face Swap API Documentation

Overview

Examples: How Face Indexing Affects Results

Case 1

Case 2

Pricing

Model Information

Technical Limitations