Keevx Image-to-Video Skill

Convert images to high-quality videos via the Keevx API.

Prerequisites

Set the environment variable

KEEVX_API_KEY

, obtained from https://www.keevx.com/main/home. Documentation: https://docs.keevx.com

export KEEVX_API_KEY="your_api_key_here"

API Endpoints

• Base URL:

  https://api.keevx.com/v1

• Upload image:

  POST /figure-resource/upload/file

  (Content-Type:

  multipart/form-data

  )
• Create task:

  POST /image_to_video

  (Content-Type:

  application/json

  )
• Query status:

  GET /image_to_video/{task_id}

• Auth: All endpoints use

  Authorization: Bearer $KEEVX_API_KEY

• Source identifier: All endpoints require the

  source: skill

  Header

Model Selection

Parameter	Model V (General, Recommended)	Model KL (Multi-Reference)
prompt	✅ Required, max 1000 chars	✅ Required
image_url	Required for single-image mode, max 20MB	❌ Not supported
reference_images	Required for multi-image mode, max 3 images, each max 20MB	✅ Required, max 7 images, each max 20MB
aspect_ratio	✅ 16:9 / 9:16	✅ 16:9 / 9:16
aspect_resolution	720p / 1080p / 4k	720p / 1080p
duration	Single-image: 4/6/8s, Multi-image: fixed 8s	5 / 10s
generate_audio	✅ Supported, default false	❌ Not supported
generate_count	Optional 1-4	Optional 1-4
callback_url	Optional	Optional

Model Selection Guide

• Choose Model V: When audio is needed, 4K resolution required, single or multi-image input, high quality requirements
• Choose Model KL: When multiple reference images are available (2-7), multi-angle showcase needed, product demo videos

Model-Specific Request Bodies

Model V

{
  "model": "V",
  "prompt": "Video description (required, max 1000 chars)",
  "image_url": "https://... (required for single-image mode)",
  "reference_images": ["https://..."],
  "aspect_ratio": "16:9",
  "aspect_resolution": "720p | 1080p | 4k",
  "duration": 4,
  "generate_audio": true,
  "generate_count": 1
}

Model KL

{
  "model": "KL",
  "prompt": "Video description (required)",
  "reference_images": ["https://..."],
  "aspect_ratio": "16:9",
  "aspect_resolution": "720p | 1080p",
  "duration": 5,
  "generate_count": 1
}

Image Input Handling

User-provided images may be URLs or local file paths, handle accordingly:

• URL (starts with

  http://

  or

  https://

  ): Use directly as

  image_url

  or

  reference_images

• Local file path: Upload via the upload endpoint first, then use the returned URL

Upload Local File

curl --location 'https://api.keevx.com/v1/figure-resource/upload/file' \
  --header 'Authorization: Bearer $KEEVX_API_KEY' \
  --header 'source: skill' \
  --form 'file=@"/path/to/local/image.png"'

Response example:

{
  "code": 0,
  "success": true,
  "message": { "global": "success" },
  "result": {
    "url": "https://storage.googleapis.com/..../image.png",
    "fileId": "c5a4676a-...",
    "fileName": "image.png"
  }
}

Extract the image URL from

result.url

for use as

image_url

or

reference_images

. For multiple local files, upload each one and collect all URLs.

Quick Examples

Single Image Generation (Model V)

curl -X POST "https://api.keevx.com/v1/image_to_video" \
  -H "Authorization: Bearer $KEEVX_API_KEY" \
  -H "source: skill" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "V",
    "prompt": "Waves crashing on the beach at sunset",
    "image_url": "https://example.com/beach.jpg",
    "aspect_ratio": "16:9",
    "aspect_resolution": "1080p",
    "duration": 6,
    "generate_audio": true
  }'

Multi-Reference Image Generation (Model KL)

curl -X POST "https://api.keevx.com/v1/image_to_video" \
  -H "Authorization: Bearer $KEEVX_API_KEY" \
  -H "source: skill" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "KL",
    "prompt": "City night timelapse, neon lights flickering",
    "reference_images": [
      "https://example.com/city1.jpg",
      "https://example.com/city2.jpg",
      "https://example.com/city3.jpg"
    ],
    "aspect_ratio": "16:9",
    "aspect_resolution": "1080p",
    "duration": 10,
    "generate_count": 2
  }'

Query Task Status

curl -X GET "https://api.keevx.com/v1/image_to_video/i2v-xxxxxxxx" \
  -H "Authorization: Bearer $KEEVX_API_KEY" \
  -H "source: skill"

Response Format

Task Created Successfully

{
  "code": 0,
  "msg": "ok",
  "data": {
    "task_ids": ["i2v-d6b6472bcf724d0399e06d1390cb964e"]
  }
}

Task Query Success

{
  "code": 0,
  "msg": "ok",
  "data": {
    "task_id": "i2v-d6b6472bcf724d0399e06d1390cb964e",
    "status": "SUCCEEDED",
    "video_url": "https://storage.googleapis.com/.../sample_0.mp4",
    "thumbnail_url": "https://storage.googleapis.com/.../thumbnail.webp",
    "error_message": "",
    "duration": 6,
    "width": 1920,
    "height": 1080
  }
}

Status Values

PENDING

(queued) /

PROCESSING

(in progress) /

SUCCEEDED

(completed) /

FAILED

(failed)

Failure Response

{
  "code": 100001,
  "msg": "Parameter error: prompt cannot be empty"
}

Callback Notification

Provide

callback_url

when creating a task. The system will send a POST request to that URL upon task completion:

{
  "code": 0,
  "msg": "ok",
  "task_type": "image_to_video",
  "data": {
    "task_id": "i2v-d6b6472bcf724d0399e06d1390cb964e",
    "status": "SUCCEEDED",
    "video_url": "https://storage.googleapis.com/.../sample_0.mp4",
    "thumbnail_url": "https://storage.googleapis.com/.../thumbnail.webp",
    "error_message": ""
  }
}

Polling Strategy

Video generation may take up to 20 minutes. Recommended: 30-second intervals, max 40 retries.

MAX_RETRIES=40
INTERVAL=30

for i in $(seq 1 $MAX_RETRIES); do
  status=$(curl -s -X GET "$API_BASE/image_to_video/$TASK_ID" \
    -H "Authorization: Bearer $KEEVX_API_KEY" \
    -H "source: skill" | jq -r '.data.status')

  if [ "$status" = "SUCCEEDED" ]; then echo "Success"; break
  elif [ "$status" = "FAILED" ]; then echo "Failed"; break; fi

  sleep $INTERVAL
done

Error Codes

HTTP Status Code	Description
200	Success
400	Parameter error
401	Authentication failed
404	Resource not found
413	Request body too large
429	Rate limit exceeded
500	Internal server error

Business Error Code	Description	Solution
100001	Parameter error	Check parameter format and required fields
100002	Invalid token	Verify API Key is correct and active
100003	Task not found	Verify task_id is correct
100004	Image size exceeded	Compress image to under 20MB
100005	Prompt too long	Shorten prompt to within 1000 characters
100006	Image URL inaccessible	Ensure image URL is publicly accessible
100007	Unsupported image format	Use common formats such as JPG, PNG

Notes

• Generated video/thumbnail URLs are retained for 7 days only; download promptly
• Max image size: 20MB, supported formats: JPG/PNG/WebP
• Max prompt length: 1000 characters
• 429 error: retry after 30s; 500 error: retry after 10s; network error: retry immediately, max 3 times
• Prompt tips: describe subject, scene, action, mood; include visual details (lighting, color, texture)
• Narration script: to add narration to the video, use

  Speak "narration content"

  in the prompt, e.g.

  Speak "Welcome to our channel"

• Image tips: use high-resolution, subject-focused, evenly-lit, well-composed images