Kling 4.0 (edit video) Video to Video API

← Kling Model name: kling-video/v4/video-to-video/edit
Generation type: video_to_video
Endpoint: POST /api/asset_generator/

Pricing

Duration	720p	1080p	2k	4k
3s	2.5	3.5	4.0	6.5
4s	3.0	4.5	5.5	8.5
5s	3.5	5.5	6.5	10.5
6s	4.5	6.5	8.0	13.0
7s	5.0	7.5	9.0	15.0
8s	6.0	8.5	10.5	17.0
9s	6.5	9.5	11.5	19.0
10s	7.0	10.5	13.0	21.0
11s	8.0	12.0	14.0	23.5
12s	8.5	13.0	15.5	25.5
13s	9.5	14.0	16.5	27.5
14s	10.0	15.0	18.0	29.5
15s	10.5	16.0	19.0	31.5
16s	11.5	17.0	20.5	34.0
17s	12.0	18.0	21.5	36.0
18s	13.0	19.0	23.0	38.0
19s	13.5	20.0	24.0	40.0
20s	14.0	21.0	25.5	42.0
21s	15.0	22.5	26.5	44.5
22s	15.5	23.5	28.0	46.5
23s	16.5	24.5	29.0	48.5
24s	17.0	25.5	30.5	50.5
25s	17.5	26.5	31.5	52.5
26s	18.5	27.5	33.0	55.0
27s	19.0	28.5	34.5	57.0
28s	20.0	29.5	35.5	59.0
29s	20.5	30.5	37.0	61.0
30s	21.0	31.5	38.0	63.0

Prices are per output. When a request asks for several outputs, the charge is this price times the number of outputs. These prices assume no billable reference inputs. The charge goes up for each second of reference video (up to 15 seconds).

Quick start

The example uses sample media from our CDN. Swap in publicly accessible URLs for your own files.

curl --request POST \
  --url https://api.creatify.ai/api/asset_generator/ \
  --header 'Content-Type: application/json' \
  --header 'X-API-ID: your-api-id' \
  --header 'X-API-KEY: your-api-key' \
  --data '{
    "model_name": "kling-video/v4/video-to-video/edit",
    "input_params": {
      "prompt": "Change the setting to a bright café while she keeps talking.",
      "video_url": "https://d35ghwdno3nak3.cloudfront.net/tutorial/asset-generator/sample-video.mp4",
      "duration": "5"
    }
  }'

import requests

response = requests.post(
    "https://api.creatify.ai/api/asset_generator/",
    headers={"X-API-ID": "your-api-id", "X-API-KEY": "your-api-key"},
    json={
        "model_name": "kling-video/v4/video-to-video/edit",
        "input_params": {
            "prompt": "Change the setting to a bright café while she keeps talking.",
            "video_url": "https://d35ghwdno3nak3.cloudfront.net/tutorial/asset-generator/sample-video.mp4",
            "duration": "5"
        },
    },
)
print(response.json()["id"])

Input parameters

Send these fields in input_params.

string

required

Reference the source video as @Video1 and reference images as @Image1, etc.Maximum characters: 2500.

string

required

Video to edit. MP4/MOV, max 300MiB, 3-30s, 700-4553px, aspect ratio 0.40-2.50, about 24-60 fps.

string

default:"5"

required

Desired output duration in seconds (3-30s). Required; does not trim the input video.Allowed values: "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24", "25", "26", "27", "28", "29", "30".

string[]

Reference images, referenced as @Image1, etc. Max 10.Maximum items: 10.

string

default:"720p"

Output resolution (720p, 1080p, 2K, 4K).Allowed values: "720p", "1080p", "2k", "4k".

Complete JSON schema

{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "prompt",
    "video_url",
    "duration"
  ],
  "properties": {
    "prompt": {
      "type": "string",
      "title": "Prompt",
      "maxLength": 2500,
      "description": "Reference the source video as @Video1 and reference images as @Image1, etc.",
      "x-support-types": [
        "mentions"
      ]
    },
    "video_url": {
      "type": "string",
      "title": "Source Video",
      "description": "Video to edit. MP4/MOV, max 300MiB, 3-30s, 700-4553px, aspect ratio 0.40-2.50, about 24-60 fps.",
      "max_file_size": 314572800,
      "min_duration": 3,
      "max_duration": 30,
      "min_width": 700,
      "max_width": 4553,
      "min_height": 700,
      "max_height": 4553,
      "min_aspect_ratio": 0.4,
      "max_aspect_ratio": 2.5,
      "timeout": 30
    },
    "image_urls": {
      "type": "array",
      "title": "Reference Images",
      "timeout": 20,
      "maxItems": 10,
      "min_width": 300,
      "min_height": 300,
      "description": "Reference images, referenced as @Image1, etc. Max 10.",
      "max_file_size": 31457280,
      "min_aspect_ratio": 0.4,
      "max_aspect_ratio": 2.5,
      "items": {
        "type": "string",
        "limit_description": "JPEG/PNG. Max file size: 30MiB, Min width: 300px, Min height: 300px, Min aspect ratio: 0.40, Max aspect ratio: 2.50, Timeout: 20.0s"
      }
    },
    "duration": {
      "enum": [
        "3",
        "4",
        "5",
        "6",
        "7",
        "8",
        "9",
        "10",
        "11",
        "12",
        "13",
        "14",
        "15",
        "16",
        "17",
        "18",
        "19",
        "20",
        "21",
        "22",
        "23",
        "24",
        "25",
        "26",
        "27",
        "28",
        "29",
        "30"
      ],
      "type": "string",
      "title": "Duration",
      "default": "5",
      "description": "Desired output duration in seconds (3-30s). Required; does not trim the input video."
    },
    "resolution": {
      "enum": [
        "720p",
        "1080p",
        "2k",
        "4k"
      ],
      "type": "string",
      "title": "Resolution",
      "default": "720p",
      "description": "Output resolution (720p, 1080p, 2K, 4K).",
      "x-advance-settings": true
    }
  }
}

Response

The request returns the task with status: "initializing". Poll GET /api/asset_generator/{id}/ until status is done or failed, or pass a webhook_url to be notified. A finished task lists its files in assets and the credits it charged in credits_used.

Get Started

URL to Video

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Kling 4.0 (edit video) Video to Video API

Pricing

Quick start

Input parameters

Response

​Pricing

​Quick start

​Input parameters

​Response

Pricing

Quick start

Input parameters

Response