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POST
/
wan
/
api
/
v1
/
services
/
aigc
/
video-generation
/
video-synthesis
Image-to-video: create a video generation task from a first frame (+ optional driving audio)
curl --request POST \
  --url https://api.apiyi.com/wan/api/v1/services/aigc/video-generation/video-synthesis \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'X-DashScope-Async: <x-dashscope-async>' \
  --data '
{
  "model": "wan2.7-i2v",
  "input": {
    "prompt": "A spray-painted boy comes to life off the wall and performs an English rap, at night under a railway bridge, cinematic lighting",
    "media": [
      {
        "type": "first_frame",
        "url": "https://your-cdn.com/rap.png"
      },
      {
        "type": "driving_audio",
        "url": "https://your-cdn.com/rap.mp3"
      }
    ]
  }
}
'
{
  "output": {
    "task_id": "f8ca39a0-6f4b-4ec2-99bf-8b9649d946c4",
    "task_status": "PENDING"
  },
  "request_id": "..."
}

Documentation Index

Fetch the complete documentation index at: https://docs.apiyi.com/llms.txt

Use this file to discover all available pages before exploring further.

The Playground on the right lets you debug directly: put Bearer sk-your-api-key in Authorization, fill in model / input.media / parameters, and send the request. A successful submission returns a task_id; see below for polling and download.
This page is the creation endpoint for wan2.7-i2v (image-to-video): give a first frame + prompt to bring the image to life, and optionally pass driving_audio to make the portrait follow the audio’s mouth movements and rhythm. For the full async flow, see the Wan Overview.
  • Audio drive is exclusive to wan2.7-i2v: HappyHorse i2v does not support driving_audio, so lip-sync / rap must use wan2.7-i2v.
  • input.media is required, otherwise the upstream returns image-to-video model ... must provide an image. Each media url must be a public https link that can be fetched directly with GET.
  • Creation requests go to /wan/api/v1/... with X-DashScope-Async: enable; do not use /v1/videos.

​
Code examples

curl -X POST "https://api.apiyi.com/wan/api/v1/services/aigc/video-generation/video-synthesis" \
  -H "X-DashScope-Async: enable" \
  -H "Authorization: Bearer sk-your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "wan2.7-i2v",
    "input": {
      "prompt": "A spray-painted boy comes to life off the wall and performs an English rap, at night under a railway bridge, cinematic lighting",
      "media": [
        {"type": "first_frame",   "url": "https://your-cdn.com/rap.png"},
        {"type": "driving_audio", "url": "https://your-cdn.com/rap.mp3"}
      ]
    },
    "parameters": {"resolution": "720P", "duration": 10, "prompt_extend": true, "watermark": true}
  }'

​
Parameter and media quick reference

ParameterTypeRequiredDefaultNotes
modelstring✓—Fixed wan2.7-i2v
input.promptstring✓—Text prompt
input.mediaarray✓—See the media table below
parameters.resolutionstring720P720P / 1080P
parameters.durationint52-15 second integer
parameters.prompt_extendbooltrueSmart rewriting, recommended on
parameters.watermarkboolfalse”AI generated” watermark

​
media[] values

typeRequiredCountNotes
first_frame✓1First frame; the video starts from this image
driving_audio1Driving audio (wav/mp3); makes the portrait follow the audio’s mouth movements and rhythm

​
Response format

{
  "output": { "task_id": "f8ca39a0-6f4b-4ec2-99bf-8b9649d946c4", "task_status": "PENDING" },
  "request_id": "..."
}
After submitting, poll GET /v1/tasks/{task_id} until completed, then download the mp4 from result_url (no Authorization header, expires in 24 hours). For the full polling loop, see Wan Overview · Async call flow.

Authorizations

​
Authorization
string
header
required

The API Key obtained from the APIYI console

Headers

​
X-DashScope-Async
enum<string>
default:enable
required

Async processing switch; must be set to enable

Available options:
enable

Body

application/json
​
model
enum<string>
default:wan2.7-i2v
required

Model ID; for image-to-video, fixed wan2.7-i2v (legacy version wan2.6-i2v)

Available options:
wan2.7-i2v,
wan2.6-i2v
​
input
object
required
​
parameters
object

Response

Task submitted; returns task_id and PENDING status

​
output
object
​
request_id
string

Unique request identifier

Example:

"..."