The guide will recreate the following functionality in the Web UI via API.

Kling 2.1 Pro Using Start and End Frame Sample Request

curl --request POST \
     --url https://cloud.leonardo.ai/api/rest/v1/generations-image-to-video\
     --header 'accept: application/json' \
     --header 'authorization: Bearer `<YOUR_API_KEY>`' \
     --header 'content-type: application/json' \
     --data'
{
    "prompt":"woman walks forward, camera follows her, timelapse with clouds and sky moving very quickly to signify transformation from night to sunsrise, her hair flies violently around her as if a burst of wind is blown at her face very quickly before it calms down again when daytime hits",
    "imageId" : <YOUR_IMAGE_ID>,
    "imageType": "GENERATED",
    "endFrameImage":{
        "id" : <YOUR_IMAGE_ID>,
        "type": "GENERATED"
    },
    "resolution": "RESOLUTION_1080",
    "duration":10,
    "height":1080,
    "width":1920,
    "model": "KLING2_1"
}
'

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Start Frame Required

Kling 2.1 Pro must have a start frame in the request.

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Duration

Duration can be 5 or 10. The units is seconds.

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Resolution

Kling 2.1 Pro generates at an aspect ratio of 16:9 at dimensions 1920x1080.

Kling 2.1 Pro generates at an aspect ratio of 9:16 at dimensions 1080x1920.

Kling 2.1 Pro Turbo generates at an aspect ratio of 1:1 at dimensions 1440x1440

height and width dimensions specified outside of this will not be accepted.

Cost

Kling 2.1 Pro 5s video costs 410 API Credits

Kling 2.1 Pro 10s video costs 820 API Credits