获取 Seedance 视频

GET

videos

{id}

cURL

curl https://api.cometapi.com/v1/videos/<TASK_ID> \
  -H "Authorization: Bearer $COMETAPI_KEY"

import os
import time
import requests

TASK_ID = "<TASK_ID>"
headers = {"Authorization": "Bearer " + os.environ["COMETAPI_KEY"]}
TERMINAL = {"completed", "failed", "error"}

while True:
    response = requests.get(
        f"https://api.cometapi.com/v1/videos/{TASK_ID}",
        headers=headers,
        timeout=15,
    )
    response.raise_for_status()
    data = response.json()
    print(data["status"], data.get("progress"))
    if data["status"] in TERMINAL:
        print(data.get("video_url"))
        break
    time.sleep(10)

const TASK_ID = "<TASK_ID>";
const terminal = new Set(["completed", "failed", "error"]);

while (true) {
  const response = await fetch(
    `https://api.cometapi.com/v1/videos/${TASK_ID}`,
    { headers: { Authorization: `Bearer ${process.env.COMETAPI_KEY}` } },
  );
  const data = await response.json();
  console.log(data.status, data.progress);
  if (terminal.has(data.status)) {
    console.log(data.video_url);
    break;
  }
  await new Promise((resolve) => setTimeout(resolve, 10_000));
}

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.cometapi.com/v1/videos/{id}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>"
  ],
]);

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

curl_close($curl);

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

package main

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

func main() {

	url := "https://api.cometapi.com/v1/videos/{id}"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("Authorization", "Bearer <token>")

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.get("https://api.cometapi.com/v1/videos/{id}")
  .header("Authorization", "Bearer <token>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.cometapi.com/v1/videos/{id}")

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

request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <token>'

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

{
  "id": "task_abc123",
  "object": "video",
  "model": "doubao-seedance-2-0",
  "status": "in_progress",
  "progress": 30,
  "created_at": 1777385418,
  "completed_at": 1777385485
}

使用此端点读取通过创建 Seedance 视频创建的任务状态。路径中的 id 是创建调用返回的值，与生成该任务的是哪个 Seedance 模型无关。响应体就是视频任务对象本身。在顶层读取 status、progress 和 video_url。

状态机

API 返回小写的状态字符串。queued 和 in_progress 为非终态；completed、failed 和 error 为终态，任务不会再继续变化。

状态	含义	终态
`queued`	已接受并排队等待渲染。	否
`in_progress`	正在渲染。	否
`completed`	已完成。响应中会包含 `video_url`。	是
`failed`	提供方拒绝了该任务。	是
`error`	内部错误导致无法完成。	是

轮询频率

每 10 到 20 秒轮询一次。大多数任务会在 1 到 3 分钟内完成，具体取决于模型、时长和尺寸。

import os
import time
import requests

TASK_ID = "<TASK_ID>"
headers = {"Authorization": "Bearer " + os.environ["COMETAPI_KEY"]}
TERMINAL = {"completed", "failed", "error"}

while True:
    response = requests.get(
        f"https://api.cometapi.com/v1/videos/{TASK_ID}",
        headers=headers,
        timeout=15,
    )
    response.raise_for_status()
    data = response.json()
    if data["status"] in TERMINAL:
        print(data.get("video_url"))
        break
    time.sleep(10)

需要关注的字段

status — 决定轮询循环何时停止。
progress — 0 到 100 的整数，可在 UI 中展示。
video_url — 已签名的下载 URL，在 completed 响应中出现。Seedance 下载直接使用此 URL，而不是单独的 /v1/videos/{id}/content 路由。签名有时间限制；请在签名过期前下载文件或将其重新托管。
completed_at — 平台返回的可选 Unix 时间戳。不要用它来停止轮询；应使用 status。
model — 回显创建任务时使用的 Seedance model id。

常见错误

HTTP 400 且 message: "task_not_exist" 表示 id 未知。请确认你保存的是成功 POST /v1/videos 响应中的 id，并且按原样使用它。
HTTP 401 表示 bearer token 缺失或无效。请检查请求头是否为 Authorization: Bearer $COMETAPI_KEY。

授权

Authorization

string

header

必填

Bearer token authentication. Use your CometAPI key.

路径参数

string

必填

Task id returned by POST /v1/videos.

响应

Current Seedance video task state.

string

必填

Task id.

object

string

必填

Object type, always video.

model

string

必填

Model id that generated the task.

status

enum<string>

必填

Task status. queued and in_progress are non-terminal. completed, failed, and error are terminal.

可用选项:

queued,

in_progress,

completed,

failed,

error

progress

integer

必填

Completion percentage.

必填范围: 0 <= x <= 100

created_at

integer

必填

Task creation time as a Unix timestamp in seconds.

video_url

string | null

Signed download URL for the finished video. Present on completed responses. Seedance downloads use this URL directly instead of a separate /v1/videos/{id}/content route. The signature is time-limited, so download or re-upload the file to your own storage soon after you receive it.

completed_at

integer | null

Optional Unix timestamp returned by the platform. Use status, not this field, to decide when polling can stop.

创建 Seedance 视频

创建 HappyHorse 视频

cURL

curl https://api.cometapi.com/v1/videos/<TASK_ID> \
  -H "Authorization: Bearer $COMETAPI_KEY"

import os
import time
import requests

TASK_ID = "<TASK_ID>"
headers = {"Authorization": "Bearer " + os.environ["COMETAPI_KEY"]}
TERMINAL = {"completed", "failed", "error"}

while True:
    response = requests.get(
        f"https://api.cometapi.com/v1/videos/{TASK_ID}",
        headers=headers,
        timeout=15,
    )
    response.raise_for_status()
    data = response.json()
    print(data["status"], data.get("progress"))
    if data["status"] in TERMINAL:
        print(data.get("video_url"))
        break
    time.sleep(10)

const TASK_ID = "<TASK_ID>";
const terminal = new Set(["completed", "failed", "error"]);

while (true) {
  const response = await fetch(
    `https://api.cometapi.com/v1/videos/${TASK_ID}`,
    { headers: { Authorization: `Bearer ${process.env.COMETAPI_KEY}` } },
  );
  const data = await response.json();
  console.log(data.status, data.progress);
  if (terminal.has(data.status)) {
    console.log(data.video_url);
    break;
  }
  await new Promise((resolve) => setTimeout(resolve, 10_000));
}

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.cometapi.com/v1/videos/{id}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>"
  ],
]);

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

curl_close($curl);

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

package main

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

func main() {

	url := "https://api.cometapi.com/v1/videos/{id}"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("Authorization", "Bearer <token>")

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.get("https://api.cometapi.com/v1/videos/{id}")
  .header("Authorization", "Bearer <token>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.cometapi.com/v1/videos/{id}")

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

request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <token>'

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

{
  "id": "task_abc123",
  "object": "video",
  "model": "doubao-seedance-2-0",
  "status": "in_progress",
  "progress": 30,
  "created_at": 1777385418,
  "completed_at": 1777385485
}

内容审核

API 密钥

状态机

轮询频率

需要关注的字段

常见错误

授权

路径参数

响应

​状态机

​轮询频率

​需要关注的字段

​常见错误

授权

路径参数

响应

状态机

轮询频率

需要关注的字段

常见错误