Wan2.7 Reference-to-Video API Reference

Wan2.7-r2v reference-to-video API reference and live playground: preserve subject features from reference images/videos, with multi-subject interaction, voice reference, and split-screen storyboards.

POST /wan/api/v1/services/aigc/video-generation/video-synthesis

Reference-to-video: create a video task that preserves subject features from reference images/videos

cURL

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-r2v",
  "input": {
    "prompt": "A girl wearing this gown walks slowly through a garden bathed in sunset, the breeze gently lifting her skirt, cinematic lighting",
    "media": [
      {
        "type": "reference_image",
        "url": "https://your-cdn.com/dress.png"
      }
    ]
  }
}
'

import requests

url = "https://api.apiyi.com/wan/api/v1/services/aigc/video-generation/video-synthesis"

payload = {
    "model": "wan2.7-r2v",
    "input": {
        "prompt": "A girl wearing this gown walks slowly through a garden bathed in sunset, the breeze gently lifting her skirt, cinematic lighting",
        "media": [
            {
                "type": "reference_image",
                "url": "https://your-cdn.com/dress.png"
            }
        ]
    }
}
headers = {
    "X-DashScope-Async": "<x-dashscope-async>",
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'X-DashScope-Async': '<x-dashscope-async>',
    Authorization: 'Bearer <token>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    model: 'wan2.7-r2v',
    input: {
      prompt: 'A girl wearing this gown walks slowly through a garden bathed in sunset, the breeze gently lifting her skirt, cinematic lighting',
      media: [{type: 'reference_image', url: 'https://your-cdn.com/dress.png'}]
    }
  })
};

fetch('https://api.apiyi.com/wan/api/v1/services/aigc/video-generation/video-synthesis', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.apiyi.com/wan/api/v1/services/aigc/video-generation/video-synthesis",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'model' => 'wan2.7-r2v',
    'input' => [
        'prompt' => 'A girl wearing this gown walks slowly through a garden bathed in sunset, the breeze gently lifting her skirt, cinematic lighting',
        'media' => [
                [
                                'type' => 'reference_image',
                                'url' => 'https://your-cdn.com/dress.png'
                ]
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json",
    "X-DashScope-Async: <x-dashscope-async>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.apiyi.com/wan/api/v1/services/aigc/video-generation/video-synthesis"

	payload := strings.NewReader("{\n  \"model\": \"wan2.7-r2v\",\n  \"input\": {\n    \"prompt\": \"A girl wearing this gown walks slowly through a garden bathed in sunset, the breeze gently lifting her skirt, cinematic lighting\",\n    \"media\": [\n      {\n        \"type\": \"reference_image\",\n        \"url\": \"https://your-cdn.com/dress.png\"\n      }\n    ]\n  }\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("X-DashScope-Async", "<x-dashscope-async>")
	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.apiyi.com/wan/api/v1/services/aigc/video-generation/video-synthesis")
  .header("X-DashScope-Async", "<x-dashscope-async>")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"model\": \"wan2.7-r2v\",\n  \"input\": {\n    \"prompt\": \"A girl wearing this gown walks slowly through a garden bathed in sunset, the breeze gently lifting her skirt, cinematic lighting\",\n    \"media\": [\n      {\n        \"type\": \"reference_image\",\n        \"url\": \"https://your-cdn.com/dress.png\"\n      }\n    ]\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.apiyi.com/wan/api/v1/services/aigc/video-generation/video-synthesis")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["X-DashScope-Async"] = '<x-dashscope-async>'
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"model\": \"wan2.7-r2v\",\n  \"input\": {\n    \"prompt\": \"A girl wearing this gown walks slowly through a garden bathed in sunset, the breeze gently lifting her skirt, cinematic lighting\",\n    \"media\": [\n      {\n        \"type\": \"reference_image\",\n        \"url\": \"https://your-cdn.com/dress.png\"\n      }\n    ]\n  }\n}"

response = http.request(request)
puts response.read_body

200

{
  "output": {
    "task_id": "acda59b4-3b10-4789-a5e5-edadae48adcb",
    "task_status": "PENDING"
  },
  "request_id": "..."
}

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-r2v (reference-to-video): give reference images/videos and the model preserves their subjects (people/animals/objects) and scene features, generating single-character performances or multi-character interactions. If you need more reference images (up to 9), consider HappyHorse r2v. For the full async flow, see the Wan Overview.

• Reference-asset citation convention: in the prompt, use “image 1 / image 2” to refer to reference_image and “video 1 / video 2” to refer to reference_video, in the same order as the media array (images and videos counted separately). With a single image/video, you can simply write “the reference image” / “the reference video”.
• Count limits: reference_image + reference_video total ≤5; at most 1 first_frame.
• Creation requests go to /wan/api/v1/... with X-DashScope-Async: enable; do not use /v1/videos.

Code examples

cURL

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-r2v",
    "input": {
      "prompt": "A girl wearing this gown walks slowly through a garden bathed in sunset, the breeze gently lifting her skirt, cinematic lighting",
      "media": [
        {"type": "reference_image", "url": "https://your-cdn.com/dress.png"}
      ]
    },
    "parameters": {"resolution": "720P", "duration": 5, "prompt_extend": true, "watermark": true}
  }'

import requests

url = "https://api.apiyi.com/wan/api/v1/services/aigc/video-generation/video-synthesis"
headers = {
    "Authorization": "Bearer sk-your-api-key",
    "Content-Type": "application/json",
    "X-DashScope-Async": "enable",
}
body = {
    "model": "wan2.7-r2v",
    "input": {
        "prompt": "The reference image: a girl walking slowly through a garden bathed in sunset, cinematic lighting",
        "media": [{"type": "reference_image", "url": "https://your-cdn.com/girl.png"}],
    },
    "parameters": {"resolution": "720P", "duration": 5, "prompt_extend": True},
}
resp = requests.post(url, json=body, headers=headers, timeout=30)
print("task_id:", resp.json()["output"]["task_id"])

import requests

# Multi-subject: image 1 = girl (with voice), video 1 = boy (with voice), image 2/3 = props/background
body = {
    "model": "wan2.7-r2v",
    "input": {
        "prompt": "Video 1 holds image 2, walks past image 1, and says: the sunshine is lovely today.",
        "media": [
            {"type": "reference_image", "url": "https://your-cdn.com/girl.jpg",
             "reference_voice": "https://your-cdn.com/girl-voice.mp3"},
            {"type": "reference_video", "url": "https://your-cdn.com/boy.mp4",
             "reference_voice": "https://your-cdn.com/boy-voice.mp3"},
            {"type": "reference_image", "url": "https://your-cdn.com/object.png"},
        ],
    },
    "parameters": {"resolution": "720P", "ratio": "16:9", "duration": 10, "prompt_extend": False, "watermark": True},
}
resp = requests.post(
    "https://api.apiyi.com/wan/api/v1/services/aigc/video-generation/video-synthesis",
    json=body,
    headers={"Authorization": "Bearer sk-your-api-key", "Content-Type": "application/json",
             "X-DashScope-Async": "enable"},
    timeout=30,
)
print(resp.json()["output"]["task_id"])

Parameter and media quick reference

Parameter	Type	Required	Default	Notes
model	string	✓	—	Fixed wan2.7-r2v
input.prompt	string	✓	—	≤5000 characters; use “image 1/video 1” to reference assets
input.media	array	✓	—	See the media table below
parameters.resolution	string		1080P	720P / 1080P
parameters.ratio	string		16:9	16:9 / 9:16 / 1:1 / 4:3 / 3:4 (ignored when a first frame is passed)
parameters.duration	int		5	2-10 with a reference video; 2-15 without
parameters.prompt_extend	bool		true	Smart rewriting
parameters.watermark	bool		false	”AI generated” watermark

media[] values

type	Count / limit	Notes
reference_image	≤5 combined with video	Reference image, provides a subject (person/animal/object) or scene; can attach reference_voice to set the voice
reference_video	≤5 combined with image	Reference video, provides subject and voice reference; do not pass empty-scene footage
first_frame	≤1	Optional first frame, jointly controls the starting frame
reference_voice	attached field	Attached to a reference_image/reference_video to set that subject’s voice (wav/mp3, 1-10s)

Response format

{
  "output": { "task_id": "acda59b4-3b10-4789-a5e5-edadae48adcb", "task_status": "PENDING" },
  "request_id": "..."
}

Check status and download

Once you have the task_id, follow these three steps to poll status and download the mp4:

• Poll GET /v1/tasks/{task_id} (with Authorization; the query does not need the X-DashScope-Async header), every 10 seconds (not < 3 seconds), until status becomes completed. Reference-to-video usually takes 1-5 minutes, so set a 20-minute client timeout as a fallback.
• Status values: submitted (queued) / in_progress (generating; progress often sitting at 30% is normal) / completed (success) / failed (check error).
• Download: GET the result_url from the response directly, without the Authorization header (it is an OSS signed direct link — sending Auth returns 403); result_url expires in 24 hours by default, so save it promptly.

Check status

curl "https://api.apiyi.com/v1/tasks/acda59b4-3b10-4789-a5e5-edadae48adcb" \
  -H "Authorization: Bearer sk-your-api-key"

{
  "status": "completed",
  "progress": 100,
  "result_url": "https://dashscope-result-xxx.oss-cn-beijing.aliyuncs.com/xxx.mp4?Expires=...&Signature=...",
  "task_id": "acda59b4-3b10-4789-a5e5-edadae48adcb"
}

# result_url is an OSS signed direct link — do NOT send the Authorization header (it returns 403)
curl -L -o out.mp4 "https://dashscope-result-xxx.oss-cn-beijing.aliyuncs.com/xxx.mp4?Expires=...&Signature=..."

TASK_ID="acda59b4-3b10-4789-a5e5-edadae48adcb"
URL=$(curl -s "https://api.apiyi.com/v1/tasks/$TASK_ID" \
  -H "Authorization: Bearer sk-your-api-key" | jq -r '.result_url')
curl -L -o out.mp4 "$URL"   # no Authorization

The above is the quick check/download path for “already have a task_id”. For the full polling loop (with timeout fallback) and Python client, 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-r2v · required

Model ID; for reference-to-video use wan2.7-r2v (legacy versions wan2.6-r2v / wan2.6-r2v-flash)

Available options: wan2.7-r2v, wan2.6-r2v, wan2.6-r2v-flash

input · object · required

Show child attributes

parameters · object

Show child attributes

Response

200

application/json

Task submitted; returns task_id and PENDING status

output · object

Show child attributes

request_id · string

Unique request identifier

Example:

"..."