alibaba/wan-2.5/image-to-video34 积分起 / 5 秒视频· 图生视频

Wan 2.5 是阿里巴巴 Wan 里第一个声音和画面一次生成的模型。文生视频、图生视频和视频续写输出 5 或 10 秒、480p、720p 或 1080p 的片子,还可以给它一段录好的人声或音乐,让视频跟着走。

在 POST /jobs/createTask 里把模型名写成 alibaba/wan-2.5/image-to-video 即可调用,34 积分/ 5 秒视频起(US$0.34)。新账户送 30 积分,可以先在 Playground 里免费试。

  • 生成视频
  • 图生视频
  • 视频续写
  • 最高 1080p
  • 5–10 秒
  • 5 种画幅
调用名alibaba/wan-2.5/image-to-video
接口POST https://api.popnow.ai/api/v1/jobs/createTask
# 1. Create the task. Keep the Idempotency-Key if you retry after a network error.
export IDEMPOTENCY_KEY="$(uuidgen)"
curl -X POST https://api.popnow.ai/api/v1/jobs/createTask \
  -H "Authorization: Bearer $POPNOW_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $IDEMPOTENCY_KEY" \
  -d '{
  "model": "alibaba/wan-2.5/image-to-video",
  "input": {
    "image_url": "https://media.popnow.ai/influencer/examples/marco.webp",
    "resolution": "720p",
    "duration_seconds": 5
  }
}'

# 2. Copy data.taskId from the response, then poll until state is succeeded, failed, canceled or expired.
TASK_ID="TASK_ID_FROM_RESPONSE"
curl "https://api.popnow.ai/api/v1/jobs/recordInfo?taskId=$TASK_ID" \
  -H "Authorization: Bearer $POPNOW_API_KEY"

input 按下面的 Schema 生成,原样就能通过校验。把提示词和链接换成你自己的即可。

价格

选项积分 /秒≈ 美元
resolution 480p6.75US$0.068
resolution 720p13.5US$0.14
resolution 1080p20.25US$0.20

1 积分 = $0.01 · 全部选项及价格:GET /models/alibaba/wan-2.5/image-to-video

每个任务按整数积分向上取整,所以最低档跑一次是 34 积分/ 5 秒视频(US$0.34)。

限制

视频时长
5–10 s
分辨率
480p · 720p · 1080p
提示词长度(字符)
1,500

参数

这些字段来自我们校验每个请求所用的同一份 Schema。没列出的字段会被拒绝。

  • image_urlstring必填

    作为起点的那张图。

    范围
    1 – … chars · image/jpeg, image/png, image/webp, image/gif
  • promptstring可选

    Describe what happens after the opening frame: the action, the camera, and the mood.

    范围
    0 – 1500 chars
  • negative_promptstring可选

    不想出现的东西。

    范围
    0 – 500 chars
  • resolutionstring可选影响价格

    输出尺寸。越大越清晰,价格也越高。

    默认值
    "720p"
    可选值
    "480p""720p""1080p"
  • duration_secondsinteger可选影响价格

    视频时长,按秒计费。

    默认值
    5
    可选值
    510
  • audio_urlstring可选

    要使用的人声或音乐。

    范围
    1 – … chars · audio/mpeg, audio/wav
  • enable_prompt_expansionboolean可选

    让模型给短提示词补充细节。

    默认值
    false
  • seedinteger可选

    用同一个数字,结果就能复现。

    范围
    0 – 2147483647
原始 JSON Schema
{
  "additionalProperties": false,
  "properties": {
    "audio_url": {
      "contentMediaType": [
        "audio/mpeg",
        "audio/wav"
      ],
      "description": "Audio track that drives lip sync or pacing.",
      "format": "uri",
      "minLength": 1,
      "type": "string"
    },
    "duration_seconds": {
      "default": 5,
      "description": "Requested output length in seconds.",
      "enum": [
        5,
        10
      ],
      "type": "integer"
    },
    "enable_prompt_expansion": {
      "default": false,
      "description": "Allow the service to expand the submitted creative brief before generation.",
      "type": "boolean"
    },
    "image_url": {
      "contentMediaType": [
        "image/jpeg",
        "image/png",
        "image/webp",
        "image/gif"
      ],
      "description": "Opening frame. The clip starts from this image.",
      "format": "uri",
      "minLength": 1,
      "type": "string"
    },
    "negative_prompt": {
      "description": "List what must not appear in the shot.",
      "maxLength": 500,
      "type": "string"
    },
    "prompt": {
      "description": "Describe what happens after the opening frame: the action, the camera, and the mood.",
      "maxLength": 1500,
      "type": "string"
    },
    "resolution": {
      "default": "720p",
      "description": "Output resolution.",
      "enum": [
        "480p",
        "720p",
        "1080p"
      ],
      "type": "string"
    },
    "seed": {
      "description": "Random seed. Keep it fixed only for controlled comparisons, not as a frame-identical guarantee.",
      "maximum": 2147483647,
      "minimum": 0,
      "type": "integer"
    }
  },
  "required": [
    "image_url"
  ],
  "type": "object"
}

Wan 2.5 的真实成片

提示词The camera arcs a slow quarter turn around the dropper bottle while a soft band of window light slides across the glass and the liquid inside catches it. The bottle itself does not move. Quiet room tone, no music.
通过 API 发出的同一个请求
{
  "model": "alibaba/wan-2.5/image-to-video",
  "input": {
    "image_url": "https://media.popnow.ai/influencer/examples/marco.webp",
    "resolution": "720p",
    "duration_seconds": 5,
    "prompt": "The camera arcs a slow quarter turn around the dropper bottle while a soft band of window light slides across the glass and the liquid inside catches it. The bottle itself does not move. Quiet room tone, no music."
  }
}

这条是从上传的文件开始的:把示例链接换成你自己的文件链接。

响应、轮询与回调

所有模型的用法都一样:先建任务,再轮询,或者等回调。

先报价

cURL
curl -X POST https://api.popnow.ai/api/v1/jobs/quote \
  -H "Authorization: Bearer $POPNOW_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "alibaba/wan-2.5/image-to-video",
  "input": {
    "image_url": "https://media.popnow.ai/influencer/examples/marco.webp",
    "resolution": "720p",
    "duration_seconds": 5
  }
}'

请求体和 createTask 相同。它返回预计扣费和最高可能扣费,不会真正运行。

已受理

HTTP
HTTP/1.1 202 Accepted

{
  "code": 200,
  "msg": "success",
  "data": {
    "taskId": "task_01k3m8x9q2z4v7n5p6r8s0t1w3",
    "state": "queued"
  },
  "request_id": "req_example_create"
}

HTTP 202 表示任务已受理,积分先冻结、还没有扣。最终扣费不会超过冻结额。

查询状态

cURL
curl "https://api.popnow.ai/api/v1/jobs/recordInfo?taskId=$TASK_ID" \
  -H "Authorization: Bearer $POPNOW_API_KEY"

每隔几秒查一次并逐步拉长间隔,state 变成 succeeded、failed、canceled 或 expired 时停止。

完成的任务

JSON
{
  "code": 200,
  "msg": "success",
  "data": {
    "taskId": "task_01k3m8x9q2z4v7n5p6r8s0t1w3",
    "model": "alibaba/wan-2.5/image-to-video",
    "state": "succeeded",
    "output": {
      "assets": [
        {
          "url": "https://cdn.popnow.ai/tasks/task_01k3m8x9q2z4v7n5p6r8s0t1w3/output.mp4?signature=FROM_RESPONSE",
          "expiresAt": "2026-10-17T12:20:00Z",
          "mime": "video/mp4",
          "width": 1280,
          "height": 720,
          "durationSeconds": 5
        }
      ]
    },
    "settled": true
  },
  "request_id": "req_example_record"
}

在 expiresAt 之前从 url 下载。之后要新链接,请调用 POST /common/download-url。

校验回调

Node.js
import { createHash, createHmac, timingSafeEqual } from "node:crypto";
import express from "express";

const app = express();
// express.raw keeps the exact bytes that were signed; express.json would not match.
app.post("/hooks/popnow", express.raw({ type: "application/json" }), (req, res) => {
  const timestamp = req.header("X-Webhook-Timestamp");
  const signature = req.header("X-Webhook-Signature") ?? "";
  const body = JSON.parse(req.body.toString("utf8"));
  const taskId = body.data?.taskId ?? body.task_id;
  const digest = createHash("sha256").update(req.body).digest("hex");
  const expected = createHmac("sha256", process.env.POPNOW_WEBHOOK_SECRET)
    .update(`${taskId}.${timestamp}.${digest}`)
    .digest("base64");
  const ok = expected.length === signature.length && timingSafeEqual(Buffer.from(expected), Buffer.from(signature));
  // Check the signature first, then reject anything older than five minutes.
  if (!ok || Math.abs(Date.now() / 1000 - Number(timestamp)) > 300) return res.status(401).end();
  res.status(200).end(); // answer fast, then fetch the task and store its files
});

设置了 callBackUrl,我们会把完成的任务发给你。先用原始请求体校验签名,再信任它。

上传本地文件

cURL
curl -X POST https://api.popnow.ai/api/v1/common/upload-url \
  -H "Authorization: Bearer $POPNOW_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"contentType": "image/png", "bytes": 482113}'

# PUT the file bytes to data.uploadUrl with every header in data.headers, then commit it:
curl -X POST https://api.popnow.ai/api/v1/files/$FILE_ID/commit \
  -H "Authorization: Bearer $POPNOW_API_KEY"
# The commit returns a popnow://f/... reference. Put it in any image, video or
# audio field of the task input instead of a public https URL.

公开的 https 链接可以直接用。本地文件要先经过 upload-url 和 commit。