Image to Video - ModelsLab

Make sure you add your s3 details for the minimax_h3 server, so you can receive the video generated in your bucket. Videos generated without s3 details being added will be deleted after 24 hours.

MiniMax H3 serves two image-to-video capabilities from this single endpoint, and nothing else in the payload tells them apart — a single init_image is a valid request to either — so model_id is required here:

`model_id`	What it does
`h3-minimax-start-end-frame`	Animates between a first and a last frame.
`h3-minimax-r2v`	Generates a video from a list of image, video and audio references.

A request without a valid model_id is rejected with:

json

{
  "status": "error",
  "message": "model_id is required for image to video: send h3-minimax-start-end-frame to animate between a first and a last frame, or h3-minimax-r2v to generate from references."
}

Request

Make a POST request to below endpoint and pass the required parameters as a request body.

curl

--request POST 'https://modelslab.com/api/v1/enterprise/minimax_h3/img2video' \

First & Last Frame
Reference to Video

Animates between two frames. Both are sent in init_image as a list of exactly two images — the first frame, then the last frame. One image is not enough, and a third would be silently dropped, so anything other than two is refused.

Body

json

{
  "key": "enterprise_api_key",
  "model_id": "h3-minimax-start-end-frame",
  "prompt": "the camera pushes in slowly as the doors open",
  "init_image": [
    "https://assets.modelslab.ai/generations/first-frame.png",
    "https://assets.modelslab.ai/generations/last-frame.png"
  ],
  "width": 1024,
  "height": 576,
  "duration": 5,
  "num_frames": 120,
  "num_inference_steps": 30,
  "seed": null,
  "instant_response": false,
  "temp": false,
  "base64": false,
  "webhook": null,
  "track_id": null
}

Body Attributes

string

required

Your API Key used for request authorization.

string

default:"h3-minimax-start-end-frame"

required

Must be h3-minimax-start-end-frame for this mode.

string

required

Text prompt with a description of the motion you want between the two frames.

array

required

A list of exactly two images — the first frame, then the last frame. Each entry is a link to a valid PNG, JPEG or other image format file, or a base64 string.

number

Width of the generated frame. Must be a multiple of 32 and at most 1536. Must be sent together with height.

number

Height of the generated frame. Must be a multiple of 32 and at most 1536. Must be sent together with width.

number

Length of the generated video in seconds. Minimum is 5, maximum is 15.

number

The number of frames in the generated video. Minimum is 120, maximum is 345.

number

Number of denoising steps. Minimum is 1, maximum is 50.

number

Seed is used to reproduce results. The same seed will give you the same video again. Pass null for a random number.

boolean

default:"false"

Queue response instantly before processing finishes instead of waiting a minimum amount of time. default: false, options: true or false.

boolean

default:"false"

If true, stores the video in temporary storage which is cleaned every 24 hours. default: false, options: true or false.

boolean

default:"false"

Set to true when the images in init_image are sent as base64 strings instead of URLs. default: false, options: true or false.

string

Set a URL to get a POST API call once the video generation is complete.

string

This ID is returned in the response to the webhook API call. This will be used to identify the webhook request.

Generates a video from references. Images carry identity and style, videos carry motion and camera work, and audio carries timbre or dialogue — any one of them is enough on its own, so at least one of init_image, init_video or init_audio is required. The prompt is optional in this mode: with an identity to follow, the references carry the shot.Each field takes a single reference as a string, or several as a list:

Field	Max references
`init_image`	9
`init_video`	3
`init_audio`	3
All fields combined	12

A data URI (data:image/png;base64,...) contains a comma of its own and cannot be combined with other references in the same field. Send a single data URI per field, or send the references as raw base64 strings or URLs.

Body

json

{
  "key": "enterprise_api_key",
  "model_id": "h3-minimax-r2v",
  "prompt": "she turns to face the camera and smiles",
  "init_image": [
    "https://assets.modelslab.ai/generations/reference-1.png",
    "https://assets.modelslab.ai/generations/reference-2.png"
  ],
  "init_video": "https://assets.modelslab.ai/generations/motion-reference.mp4",
  "init_audio": null,
  "width": 1024,
  "height": 576,
  "resolution": 720,
  "adaptive_resolution": true,
  "duration": 5,
  "num_frames": 120,
  "num_inference_steps": 30,
  "num_samples": 1,
  "safety_checker": false,
  "seed": null,
  "instant_response": false,
  "temp": false,
  "base64": false,
  "webhook": null,
  "track_id": null
}

Body Attributes

string

required

Your API Key used for request authorization.

string

default:"h3-minimax-r2v"

required

Must be h3-minimax-r2v for this mode.

string

Text prompt with a description of the things you want in the video. Optional in this mode — the model falls back to a prompt of its own when the references carry the shot.

string | array

One image reference, or a list of up to 9. Carries identity and style. Each entry is a link to a valid PNG, JPEG or other image format file, or a base64 string.

string | array

One video reference, or a list of up to 3. Carries motion and camera work.

string | array

One audio reference, or a list of up to 3. Carries timbre or dialogue.

number

Width of the generated frame. Must be a multiple of 32 and at most 1536. Must be sent together with height.

number

Height of the generated frame. Must be a multiple of 32 and at most 1536. Must be sent together with width.

number

Resolution of the generated output. Minimum is 320, maximum is 1536.

boolean

default:"true"

Let the model pick the output resolution from the references instead of holding it fixed. default: true, options: true or false.

number

Length of the generated video in seconds. Minimum is 5, maximum is 15.

number

The number of frames in the generated video. Minimum is 120, maximum is 345.

number

Number of denoising steps. Minimum is 1, maximum is 50.

number

default:"1"

Number of videos to be returned in the response. The maximum value is 4.

boolean

default:"false"

A checker for NSFW outputs. If such an output is detected, it will be replaced by a blank one. default: false, options: true or false.

number

Seed is used to reproduce results. The same seed will give you the same video again. Pass null for a random number.

boolean

default:"false"

Queue response instantly before processing finishes instead of waiting a minimum amount of time. default: false, options: true or false.

boolean

default:"false"

If true, stores the video in temporary storage which is cleaned every 24 hours. default: false, options: true or false.

boolean

default:"false"

Set to true when the references are sent as base64 strings instead of URLs. default: false, options: true or false.

string

Set a URL to get a POST API call once the video generation is complete.

string

This ID is returned in the response to the webhook API call. This will be used to identify the webhook request.

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