Get 4K Video

Get the ultra-high-definition 4K version of a Veo 3.1 video generation task.

Legacy note: If a task was generated via a deprecated fallback path, this endpoint may not apply.

Usage Instructions

API method difference

1080P uses GET: /api/v1/veo/get-1080p-video

4K uses POST: /api/v1/veo/get-4k-video

Credit consumption

4K requires additional credits.

The extra cost is approximately equivalent to 2× “Fast mode” video generations (see pricing details for the latest).

Supported aspect ratios

Both 16:9 and 9:16 tasks support upgrading to 1080P and 4K.

Processing time

4K generation requires significant extra processing time — typically ~5–10 minutes depending on load.

If the 4K video is not ready yet, the endpoint may return a non-200 code. Wait and retry (recommended interval: 30s+) until the result is available.

For production use, we recommend using callBackUrl to receive automatic notifications when 4K generation completes, rather than polling frequently.

Callbacks

After submitting a 4K video generation task, use the unified callback mechanism to receive generation completion notifications:

4K Video Generation Callbacks

Learn how to configure and handle 4K video generation callback notifications

Error Responses

When submitting repeated requests for the same task ID, the system returns a 422 status code with specific error details:

4K Video Processing

4K Video Already Generated

{
  "code": 422,
  "msg": "4k is processing. It should be ready in 5-10 minutes. Please check back shortly.",
  "data": {
    "taskId": "veo_task_example123",
    "resultUrls": null,
    "imageUrls": null
  }
}

Bearer Token

Provide your bearer token in the

Authorization

header when making requests to protected resources.

Example:

Authorization: Bearer ********************

curl --location --request POST 'https://api.kie.ai/api/v1/veo/get-4k-video' \ --header 'Authorization: Bearer <token>' \ --header 'Content-Type: application/json' \ --data-raw '{ "taskId": "veo_task_abcdef123456", "index": 0, "callBackUrl": "http://your-callback-url.com/4k-callback" }'

Usage Instructions

Callbacks

Error Responses

Callbacks

on4KVideoGenerated

Request

Responses

Get 4K Video

Usage Instructions#

Callbacks#

Error Responses#

Callbacks

on4KVideoGenerated

Request

Responses

Usage Instructions

Callbacks

Error Responses