# 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: $IDEMPOTENCY_KEY" \
-d '{
"model": "pruna-ai/p-video-2-pro/image-to-video",
"input": {
"prompt": "A slow aerial shot drifting over a misty pine forest at sunrise",
"image_url": "https://media.popnow.ai/influencer/examples/marco.webp",
"resolution": "768p",
"generation_mode": "speed",
"duration_seconds": 5
}
}'
# 2. Copy data.taskId from the response, then poll until state is succeeded, failed, canceled or expired.
TASK_ID="TASK_ID_FROM_RESPONSE"
curl "https://api.popnow.ai/api/v1/jobs/recordInfo?taskId=$TASK_ID" \
-H "Authorization: Bearer $POPNOW_API_KEY"
// Node 18+ (or any runtime with fetch). Keep the API key on your server.
const BASE = "https://api.popnow.ai/api/v1";
const headers = { Authorization: `Bearer ${process.env.POPNOW_API_KEY}` };
const sleep = (ms) => new Promise((r) => setTimeout(r, ms));
async function call(path, init = {}) {
const res = await fetch(BASE + path, { ...init, headers: { ...headers, ...init.headers } });
const body = await res.json();
if (body.code !== 200) throw new Error(`${body.code} ${body.msg}`);
return body.data;
}
const { taskId } = await call("/jobs/createTask", {
method: "POST",
headers: { "Content-Type": "application/json", "Idempotency-Key": crypto.randomUUID() },
body: JSON.stringify({
"model": "pruna-ai/p-video-2-pro/image-to-video",
"input": {
"prompt": "A slow aerial shot drifting over a misty pine forest at sunrise",
"image_url": "https://media.popnow.ai/influencer/examples/marco.webp",
"resolution": "768p",
"generation_mode": "speed",
"duration_seconds": 5
}
}),
});
// Poll with backoff. A finished task may still be copying files: wait while an asset is pending.
let task;
for (let delay = 2000; ; delay = Math.min(delay * 1.5, 15000)) {
await sleep(delay);
task = await call(`/jobs/recordInfo?taskId=${taskId}`);
const copying = (task.output?.assets ?? []).some((a) => a.pending && !a.unavailable);
if (["succeeded", "failed", "canceled", "expired"].includes(task.state) && !copying) break;
}
if (task.state !== "succeeded") throw new Error(`${task.state}: ${task.errorMessage ?? "no detail"}`);
// Each asset has a signed url (no API key needed) that expires at expiresAt: save the file.
for (const asset of task.output.assets) console.log(asset.url);
import os, time, uuid, requests
BASE = "https://api.popnow.ai/api/v1"
HEADERS = {"Authorization": f"Bearer {os.environ['POPNOW_API_KEY']}"}
def call(method, path, **kwargs):
body = requests.request(method, BASE + path, headers={**HEADERS, **kwargs.pop("headers", {})}, timeout=30, **kwargs).json()
if body["code"] != 200:
raise RuntimeError(f'{body["code"]} {body["msg"]}')
return body["data"]
task_id = call(
"POST",
"/jobs/createTask",
headers={"Idempotency-Key": str(uuid.uuid4())}, # reuse it if you retry
json={
"model": "pruna-ai/p-video-2-pro/image-to-video",
"input": {
"prompt": "A slow aerial shot drifting over a misty pine forest at sunrise",
"image_url": "https://media.popnow.ai/influencer/examples/marco.webp",
"resolution": "768p",
"generation_mode": "speed",
"duration_seconds": 5
}
},
)["taskId"]
# Poll with backoff. A finished task may still be copying files: wait while an asset is pending.
delay = 2.0
while True:
time.sleep(delay)
task = call("GET", "/jobs/recordInfo", params={"taskId": task_id})
assets = (task.get("output") or {}).get("assets") or []
copying = any(a.get("pending") and not a.get("unavailable") for a in assets)
if task["state"] in ("succeeded", "failed", "canceled", "expired") and not copying:
break
delay = min(delay * 1.5, 15.0)
if task["state"] != "succeeded":
raise RuntimeError(f'{task["state"]}: {task.get("errorMessage", "no detail")}')
# Each asset has a signed url (no API key needed) that expires at expiresAt: save the file.
for asset in assets:
print(asset["url"])
Describe what happens after the opening frame: the action, the camera and the sound.
范围
1 – … chars
image_urlstring必填
作为起点的那张图。
范围
image/jpeg, image/png, image/webp, image/gif
last_image_urlstring可选
可选的结尾画面,让视频正好停在你想要的地方。
范围
image/jpeg, image/png, image/webp, image/gif
resolutionstring可选影响价格
输出尺寸。越大越清晰,价格也越高。
默认值
"768p"
可选值
"480p""768p"
generation_modestring可选影响价格
cost is the cheapest and slower, speed (the default) is faster at the same quality, quality renders a higher-quality clip at a higher price.
默认值
"speed"
可选值
"cost""speed""quality"
duration_secondsinteger可选影响价格
视频时长,按秒计费。
默认值
5
范围
5 – 15
prompt_optimization_modestring可选
Let the service rewrite and expand the prompt first: off follows it word for word, turbo is a quick rewrite, max a fuller one. Does not change the price.
默认值
"off"
可选值
"off""turbo""max"
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": {
"duration_seconds": {
"default": 5,
"description": "Output length in whole seconds, from 5 to 15. Billed per second.",
"maximum": 15,
"minimum": 5,
"type": "integer"
},
"generation_mode": {
"default": "speed",
"description": "cost is the cheapest and slower, speed (the default) is faster at the same quality, quality renders a higher-quality clip at a higher price.",
"enum": [
"cost",
"speed",
"quality"
],
"type": "string"
},
"image_url": {
"contentMediaType": [
"image/jpeg",
"image/png",
"image/webp",
"image/gif"
],
"description": "Opening frame (JPEG, PNG or WebP). The clip starts from this image and keeps its shape.",
"format": "uri",
"type": "string"
},
"last_image_url": {
"contentMediaType": [
"image/jpeg",
"image/png",
"image/webp",
"image/gif"
],
"description": "Optional closing frame the clip should end on.",
"format": "uri",
"type": "string"
},
"prompt": {
"description": "Describe what happens after the opening frame: the action, the camera and the sound.",
"minLength": 1,
"type": "string"
},
"prompt_optimization_mode": {
"default": "off",
"description": "Let the service rewrite and expand the prompt first: off follows it word for word, turbo is a quick rewrite, max a fuller one. Does not change the price.",
"enum": [
"off",
"turbo",
"max"
],
"type": "string"
},
"resolution": {
"default": "768p",
"description": "Output resolution. 768p costs more per second than 480p.",
"enum": [
"480p",
"768p"
],
"type": "string"
},
"seed": {
"description": "Random seed for controlled comparisons, not a frame-identical guarantee.",
"maximum": 2147483647,
"minimum": 0,
"type": "integer"
}
},
"required": [
"image_url",
"prompt"
],
"type": "object"
}
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 $POPNOW_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "pruna-ai/p-video-2-pro/image-to-video",
"input": {
"prompt": "A slow aerial shot drifting over a misty pine forest at sunrise",
"image_url": "https://media.popnow.ai/influencer/examples/marco.webp",
"resolution": "768p",
"generation_mode": "speed",
"duration_seconds": 5
}
}'
运行前,将相同请求体发送到 POST /jobs/quote,可查看预计费用和最高费用,单位为美元。报价不会运行任务或扣款。
在 expiresAt 之前从 url 下载。之后要新链接,请调用 POST /common/download-url。
校验回调
Node.js
import { createHash, createHmac, timingSafeEqual } from "node:crypto";
import express from "express";
const app = express();
// express.raw keeps the exact bytes that were signed; express.json would not match.
app.post("/hooks/popnow", express.raw({ type: "application/json" }), (req, res) => {
const timestamp = req.header("X-Webhook-Timestamp");
const signature = req.header("X-Webhook-Signature") ?? "";
const body = JSON.parse(req.body.toString("utf8"));
const taskId = body.data?.taskId ?? body.task_id;
const digest = createHash("sha256").update(req.body).digest("hex");
const expected = createHmac("sha256", process.env.POPNOW_WEBHOOK_SECRET)
.update(`${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。
关于 P-Video 2 Pro
5 到 15 秒的带声视频,支持文字、首尾帧或参考片段生成。
在 POST /jobs/createTask 里把模型名写成 pruna-ai/p-video-2-pro/image-to-video 即可调用,US$0.06 起。
请求参数
参数
必填
说明
duration_seconds
否
视频时长,按秒计费。 ≥ 5 · ≤ 15 · 默认值: 5
generation_mode
否
cost is the cheapest and slower, speed (the default) is faster at the same quality, quality renders a higher-quality clip at a higher price. cost · speed · quality · 默认值: speed
image_url
是
作为起点的那张图。
last_image_url
否
可选的结尾画面,让视频正好停在你想要的地方。
prompt
是
Describe what happens after the opening frame: the action, the camera and the sound.
prompt_optimization_mode
否
Let the service rewrite and expand the prompt first: off follows it word for word, turbo is a quick rewrite, max a fuller one. Does not change the price. off · turbo · max · 默认值: off
resolution
否
输出尺寸。越大越清晰,价格也越高。 480p · 768p · 默认值: 768p
seed
否
用同一个数字,结果就能复现。 ≥ 0 · ≤ 2147483647
价格
价格以美元计。API 使用独立的美元余额。网站积分不能用于 API,也不能转入 API 余额;API 余额同样不能转为网站积分。 任务受理时,从 API 余额中冻结报价的最高金额;完成后按实际用量结算,实扣不超过冻结额,并释放剩余金额。任务失败则释放冻结额。
选项
USD /秒
generation_mode cost · resolution 480p
US$0.012
generation_mode speed · resolution 480p
US$0.024
generation_mode cost · resolution 768p
US$0.03
generation_mode speed · resolution 768p
US$0.042
generation_mode quality · resolution 480p
US$0.048
generation_mode quality · resolution 768p
US$0.09
运行前,将相同请求体发送到 POST /jobs/quote,可查看预计费用和最高费用,单位为美元。报价不会运行任务或扣款。
API 快速上手
三步调用 P-Video 2 Pro API
创建 API 密钥. 登录 PopNow,在 API 控制台创建密钥。密钥以 sk-popnow- 开头,API 调用使用独立的美元余额。
发送请求. 向 POST /jobs/createTask 发请求,model 填 pruna-ai/p-video-2-pro/image-to-video,input 按参数表填写。响应会立刻返回任务 ID。
取回结果. 用任务 ID 轮询 GET /jobs/recordInfo,或者传 callBackUrl,结果会推送到这个地址。任务成功后下载输出链接。
# 1. Create the task. Keep the Idempotency-Key if you retry after a network error.
export IDEMPOTENCY_KEY="$(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: $IDEMPOTENCY_KEY" \
-d '{
"model": "pruna-ai/p-video-2-pro/image-to-video",
"input": {
"prompt": "A slow aerial shot drifting over a misty pine forest at sunrise",
"image_url": "https://media.popnow.ai/influencer/examples/marco.webp",
"resolution": "768p",
"generation_mode": "speed",
"duration_seconds": 5
}
}'
# 2. Copy data.taskId from the response, then poll until state is succeeded, failed, canceled or expired.
TASK_ID="TASK_ID_FROM_RESPONSE"
curl "https://api.popnow.ai/api/v1/jobs/recordInfo?taskId=$TASK_ID" \
-H "Authorization: Bearer $POPNOW_API_KEY"