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POST
/
v1
/
videos
/
generations
wan2.5-text-to-video Interface
curl --request POST \
  --url https://api.evolink.ai/v1/videos/generations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model": "wan2.5-text-to-video",
  "prompt": "A cat playing piano"
}
'
{
  "created": 1757169743,
  "id": "task-unified-1757169743-7cvnl5zw",
  "model": "wan2.5-text-to-video",
  "object": "video.generation.task",
  "progress": 0,
  "status": "pending",
  "task_info": {
    "can_cancel": true,
    "estimated_time": 120
  },
  "type": "video",
  "usage": {
    "billing_rule": "per_call",
    "credits_reserved": 5,
    "user_group": "default"
  }
}

Authorizations

​
Authorization
string
header
required

##All APIs require Bearer Token authentication##

Get API Key:

Visit API Key Management Page to get your API Key

Add to request header:

Authorization: Bearer YOUR_API_KEY

Body

application/json
​
model
enum<string>
default:wan2.5-text-to-video
required

Model name

Available options:
wan2.5-text-to-video
Example:

"wan2.5-text-to-video"

​
prompt
string
required

Prompt describing what kind of video to generate, limited to 2000 tokens

Maximum string length: 2000
Example:

"A cat playing the piano"

​
aspect_ratio
string
default:16:9

Video aspect ratio, defaults to 16:9

Description:

  • 480p: Supports 16:9 (landscape), 9:16 (portrait), 1:1 (square)
  • 720p: Supports 16:9 (landscape), 9:16 (portrait), 1:1 (square), 4:3, 3:4
  • 1080p: Supports 16:9 (landscape), 9:16 (portrait), 1:1 (square), 4:3, 3:4
Example:

"16:9"

​
quality
string
default:720p

Video quality, defaults to 720p

Description:

  • 480p: Lower quality, lower price
  • 720p: Standard quality, standard price, this is the default
  • 1080p: High quality, higher price

Note: Different quality levels support different aspect ratios, see aspect_ratio parameter for details

Example:

"720p"

​
duration
integer

Specifies the duration of the generated video (seconds)

Note:

  • Only supports values 5 and 10, representing 5 seconds and 10 seconds respectively
  • A single request will pre-charge based on the value of duration, with actual charges based on the generated video duration in seconds
Example:

5

​
prompt_extend
boolean
default:true

Whether to enable intelligent prompt rewriting. When enabled, a large language model will optimize the prompt. This is particularly effective for prompts that lack detail or are too simple. Default value is true

Example:

true

​
callback_url
string<uri>

HTTPS callback address after task completion

Callback Timing:

  • Triggered when task is completed, failed, or cancelled
  • Sent after billing confirmation is completed

Security Restrictions:

  • Only HTTPS protocol is supported
  • Callback to internal IP addresses is prohibited (127.0.0.1, 10.x.x.x, 172.16-31.x.x, 192.168.x.x, etc.)
  • URL length must not exceed 2048 characters

Callback Mechanism:

  • Timeout: 10 seconds
  • Maximum 3 retries on failure (retries after 1 second/2 seconds/4 seconds)
  • Callback response body format is consistent with the task query API response format
  • Callback address returning 2xx status code is considered successful, other status codes will trigger retry
Example:

"https://your-domain.com/webhooks/video-task-completed"

Response

Video task created successfully

​
created
integer

Task creation timestamp

Example:

1757169743

​
id
string

Task ID

Example:

"task-unified-1757169743-7cvnl5zw"

​
model
string

Actual model name used

Example:

"wan2.5-text-to-video"

​
object
enum<string>

Specific task type

Available options:
video.generation.task
​
progress
integer

Task progress percentage (0-100)

Required range: 0 <= x <= 100
Example:

0

​
status
enum<string>

Task status

Available options:
pending,
processing,
completed,
failed
Example:

"pending"

​
task_info
object

Video task detailed information

​
type
enum<string>

Task output type

Available options:
text,
image,
audio,
video
Example:

"video"

​
usage
object

Usage and billing information