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POST
/
v1
/
videos
/
generations
wan2.6-reference-video-flash API
curl --request POST \
  --url https://api.evolink.ai/v1/videos/generations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model": "wan2.6-reference-video-flash",
  "prompt": "A person dancing",
  "video_urls": [
    "https://help-static-aliyun-doc.aliyuncs.com/file-manage-files/xxx.mp4"
  ]
}
'
{
  "created": 1757169743,
  "id": "task-unified-1757169743-7cvnl5zw",
  "model": "wan2.6-reference-video-flash",
  "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:wan2.6-reference-video-flash
required

Model name

Available options:
wan2.6-reference-video-flash
Example:

"wan2.6-reference-video-flash"

​
prompt
string
required

Prompt describing the desired video, limited to 1500 characters

Maximum string length: 1500
Example:

"A person dancing"

​
video_urls
string<uri>[]
required

Array of reference video file URLs. Used to reference character appearance and voice from videos to generate new videos.

URL requirements:

  • Supports HTTP or HTTPS protocol
  • Local files can be uploaded via Upload File to get temporary URL

Array limits:

  • Maximum 3 videos

Video requirements:

  • Format: mp4, mov
  • Duration: 2～30s
  • File size: single video not exceeding 100MB

Input video billing rules:

  • Each reference video is truncated separately then summed, total input billing duration cap is 5 seconds
  • 1 video: min(video duration, 5s)
  • 2 videos: min(video1 duration, 2.5s) + min(video2 duration, 2.5s)
  • 3 videos: min(video1 duration, 1.65s) + min(video2 duration, 1.65s) + min(video3 duration, 1.65s)
  • 1080p quality has higher pricing
Maximum array length: 3
Example:
[
  "https://help-static-aliyun-doc.aliyuncs.com/file-manage-files/xxx.mp4"
]
​
aspect_ratio
string

Video aspect ratio, defaults to 16:9

Options:

  • 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

Video quality, defaults to 720p

Options:

  • 720p: Standard quality, standard pricing, this is the default
  • 1080p: High quality, higher pricing

Note: Different qualities support different aspect ratios, see aspect_ratio parameter

Example:

"720p"

​
duration
integer

Specify the duration of the generated video (seconds)

Note:

  • Supports any integer value between 2~10 seconds

Output video billing rules:

  • Output video billing duration: actual seconds of successfully generated video
Required range: 2 <= x <= 10
Example:

5

​
model_params
object

Model parameter configuration

​
generate_audio
boolean
default:true

Whether to generate audio, defaults to true

Options:

  • true: Generate video with audio, higher pricing
  • false: Generate video without audio, lower pricing
Example:

true

​
callback_url
string<uri>

HTTPS callback URL for task completion

Callback timing:

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

Security restrictions:

  • Only HTTPS protocol supported
  • Cannot callback to internal IP addresses (127.0.0.1, 10.x.x.x, 172.16-31.x.x, 192.168.x.x, etc.)
  • URL length not exceeding 2048 characters

Callback mechanism:

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

"wan2.6-reference-video-flash"

​
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 details

​
type
enum<string>

Task output type

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

"video"

​
usage
object

Usage and billing information