创建视频生成任务
curl --request POST \
--url https://api.gravitex.ai/v1/video/generations \
--header 'Authorization: <authorization>' \
--header 'Content-Type: application/json' \
--data '
{
"model": "<string>",
"content": [
{}
],
"prompt": "<string>",
"duration": 123,
"resolution": "<string>",
"ratio": "<string>",
"generate_audio": true,
"watermark": true,
"seed": 123
}
'import requests
url = "https://api.gravitex.ai/v1/video/generations"
payload = {
"model": "<string>",
"content": [{}],
"prompt": "<string>",
"duration": 123,
"resolution": "<string>",
"ratio": "<string>",
"generate_audio": True,
"watermark": True,
"seed": 123
}
headers = {
"Authorization": "<authorization>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {Authorization: '<authorization>', 'Content-Type': 'application/json'},
body: JSON.stringify({
model: '<string>',
content: [{}],
prompt: '<string>',
duration: 123,
resolution: '<string>',
ratio: '<string>',
generate_audio: true,
watermark: true,
seed: 123
})
};
fetch('https://api.gravitex.ai/v1/video/generations', 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.gravitex.ai/v1/video/generations",
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' => '<string>',
'content' => [
[
]
],
'prompt' => '<string>',
'duration' => 123,
'resolution' => '<string>',
'ratio' => '<string>',
'generate_audio' => true,
'watermark' => true,
'seed' => 123
]),
CURLOPT_HTTPHEADER => [
"Authorization: <authorization>",
"Content-Type: application/json"
],
]);
$response = curl_exec($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.gravitex.ai/v1/video/generations"
payload := strings.NewReader("{\n \"model\": \"<string>\",\n \"content\": [\n {}\n ],\n \"prompt\": \"<string>\",\n \"duration\": 123,\n \"resolution\": \"<string>\",\n \"ratio\": \"<string>\",\n \"generate_audio\": true,\n \"watermark\": true,\n \"seed\": 123\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Authorization", "<authorization>")
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.gravitex.ai/v1/video/generations")
.header("Authorization", "<authorization>")
.header("Content-Type", "application/json")
.body("{\n \"model\": \"<string>\",\n \"content\": [\n {}\n ],\n \"prompt\": \"<string>\",\n \"duration\": 123,\n \"resolution\": \"<string>\",\n \"ratio\": \"<string>\",\n \"generate_audio\": true,\n \"watermark\": true,\n \"seed\": 123\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.gravitex.ai/v1/video/generations")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = '<authorization>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"model\": \"<string>\",\n \"content\": [\n {}\n ],\n \"prompt\": \"<string>\",\n \"duration\": 123,\n \"resolution\": \"<string>\",\n \"ratio\": \"<string>\",\n \"generate_audio\": true,\n \"watermark\": true,\n \"seed\": 123\n}"
response = http.request(request)
puts response.read_bodySeedance 2.0(/generations)
创建视频生成任务
Seedance 2.0 POST /v1/video/generations
POST
/
v1
/
video
/
generations
创建视频生成任务
curl --request POST \
--url https://api.gravitex.ai/v1/video/generations \
--header 'Authorization: <authorization>' \
--header 'Content-Type: application/json' \
--data '
{
"model": "<string>",
"content": [
{}
],
"prompt": "<string>",
"duration": 123,
"resolution": "<string>",
"ratio": "<string>",
"generate_audio": true,
"watermark": true,
"seed": 123
}
'import requests
url = "https://api.gravitex.ai/v1/video/generations"
payload = {
"model": "<string>",
"content": [{}],
"prompt": "<string>",
"duration": 123,
"resolution": "<string>",
"ratio": "<string>",
"generate_audio": True,
"watermark": True,
"seed": 123
}
headers = {
"Authorization": "<authorization>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {Authorization: '<authorization>', 'Content-Type': 'application/json'},
body: JSON.stringify({
model: '<string>',
content: [{}],
prompt: '<string>',
duration: 123,
resolution: '<string>',
ratio: '<string>',
generate_audio: true,
watermark: true,
seed: 123
})
};
fetch('https://api.gravitex.ai/v1/video/generations', 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.gravitex.ai/v1/video/generations",
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' => '<string>',
'content' => [
[
]
],
'prompt' => '<string>',
'duration' => 123,
'resolution' => '<string>',
'ratio' => '<string>',
'generate_audio' => true,
'watermark' => true,
'seed' => 123
]),
CURLOPT_HTTPHEADER => [
"Authorization: <authorization>",
"Content-Type: application/json"
],
]);
$response = curl_exec($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.gravitex.ai/v1/video/generations"
payload := strings.NewReader("{\n \"model\": \"<string>\",\n \"content\": [\n {}\n ],\n \"prompt\": \"<string>\",\n \"duration\": 123,\n \"resolution\": \"<string>\",\n \"ratio\": \"<string>\",\n \"generate_audio\": true,\n \"watermark\": true,\n \"seed\": 123\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Authorization", "<authorization>")
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.gravitex.ai/v1/video/generations")
.header("Authorization", "<authorization>")
.header("Content-Type", "application/json")
.body("{\n \"model\": \"<string>\",\n \"content\": [\n {}\n ],\n \"prompt\": \"<string>\",\n \"duration\": 123,\n \"resolution\": \"<string>\",\n \"ratio\": \"<string>\",\n \"generate_audio\": true,\n \"watermark\": true,\n \"seed\": 123\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.gravitex.ai/v1/video/generations")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = '<authorization>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"model\": \"<string>\",\n \"content\": [\n {}\n ],\n \"prompt\": \"<string>\",\n \"duration\": 123,\n \"resolution\": \"<string>\",\n \"ratio\": \"<string>\",\n \"generate_audio\": true,\n \"watermark\": true,\n \"seed\": 123\n}"
response = http.request(request)
puts response.read_body简介
提交 Seedance 2.0 异步视频生成任务,返回task_id 用于轮询。content 与 prompt 至少提供一个,推荐使用 content 数组。
认证
string
必填
Bearer Token,如
Bearer sk-xxxxxxxxxxstring
application/json请求参数
string
必填
seedance-2-0 或 seedance-2-0-fastarray
多模态内容数组(见下方);与
prompt 二选一,至少提供一个string
文本提示词,
content 的简化替代integer
默认值:"5"
-1(自动)或 4~15 秒string
默认值:"720p"
480p、720p;标准版还支持 1080p(fast 不支持 1080p)string
默认值:"16:9"
16:9、9:16、1:1、4:3、3:4、21:9、adaptive(首帧图建议 adaptive;参考图/参考视频模式下不可用)boolean
默认值:"true"
是否自动生成音频;提供
reference_audio 时建议设为 falseboolean
默认值:"false"
是否添加水印
integer
默认值:"-1"
随机种子,
-1 为随机;固定正整数可复现结果content 数组
| type | role | 说明 | 数量 |
|---|---|---|---|
text | — | 文本提示词 | 1 条 |
image_url | (省略) | 默认作首帧 | 1 张 |
image_url | first_frame | 首帧图片 | 1 张 |
image_url | last_frame | 尾帧(须搭配 first_frame) | 1 张 |
image_url | reference_image | 参考图片 | 最多 9 张 |
video_url | reference_video | 参考视频 | 最多 3 个 |
audio_url | reference_audio | 参考音频(须搭配图/视频) | 最多 3 段 |
first_frame 与 reference_image 不能同时使用;last_frame 须搭配 first_frame。
asset:// 须按 asset_type 分流:Image → image_url;Video → video_url;Audio → audio_url。音频素材塞入 image_url 会返回 InvalidParameter。素材 asset_type | type | 字段 | role |
|---|---|---|---|
Image | image_url | image_url.url | reference_image / first_frame / last_frame |
Video | video_url | video_url.url | reference_video |
Audio | audio_url | audio_url.url | reference_audio |
content 裸传 URL 限制
content 中直接传 http(s) URL(非 asset://)时,资源须满足下列约束;asset:// 引用素材库时数值约束相同,图片格式在素材库侧可更宽(见 创建素材)。
| 类型 | 主要限制 |
|---|---|
| 图片 | JPEG / PNG / WebP,≤ 30MB,300~6000px;reference_image 最多 9 张;首/尾帧各 1 张 |
| 视频 | MP4 / MOV,≤ 50MB,单段 2~15 秒,最多 3 个 reference_video,总时长 ≤ 15 秒 |
| 音频 | WAV / MP3,≤ 15MB,2~15 秒/段,最多 3 段;须搭配图片或视频 |
请求示例
文生视频:curl -X POST "https://api.gravitex.ai/v1/video/generations" \
-H "Authorization: Bearer sk-xxxxxxxxxx" \
-H "Content-Type: application/json" \
-d '{
"model": "seedance-2-0",
"content": [
{"type": "text", "text": "黄金时刻,无人机航拍连绵山脉,云海翻涌"}
],
"duration": 5,
"resolution": "720p",
"ratio": "16:9",
"generate_audio": true
}'
prompt(文生视频):
curl -X POST "https://api.gravitex.ai/v1/video/generations" \
-H "Authorization: Bearer sk-xxxxxxxxxx" \
-H "Content-Type: application/json" \
-d '{
"model": "seedance-2-0",
"prompt": "黄金时刻,无人机航拍连绵山脉",
"duration": 5,
"resolution": "720p",
"ratio": "16:9"
}'
curl -X POST "https://api.gravitex.ai/v1/video/generations" \
-H "Authorization: Bearer sk-xxxxxxxxxx" \
-H "Content-Type: application/json" \
-d '{
"model": "seedance-2-0",
"content": [
{"type": "text", "text": "镜头缓慢推进,花瓣随风飘落"},
{"type": "image_url", "image_url": {"url": "https://example.com/garden.jpg"}}
],
"ratio": "adaptive"
}'
curl -X POST "https://api.gravitex.ai/v1/video/generations" \
-H "Authorization: Bearer sk-xxxxxxxxxx" \
-H "Content-Type: application/json" \
-d '{
"model": "seedance-2-0",
"content": [
{"type": "text", "text": "日出到日落的延时摄影效果"},
{"type": "image_url", "image_url": {"url": "https://example.com/sunrise.jpg"}, "role": "first_frame"},
{"type": "image_url", "image_url": {"url": "https://example.com/sunset.jpg"}, "role": "last_frame"}
],
"duration": 10,
"ratio": "adaptive"
}'
curl -X POST "https://api.gravitex.ai/v1/video/generations" \
-H "Authorization: Bearer sk-xxxxxxxxxx" \
-H "Content-Type: application/json" \
-d '{
"model": "seedance-2-0",
"content": [
{"type": "text", "text": "素材1 用素材2唱歌"},
{"type": "image_url", "image_url": {"url": "asset://asset-xxx-image"}, "role": "reference_image"},
{"type": "audio_url", "audio_url": {"url": "asset://asset-xxx-audio"}, "role": "reference_audio"}
],
"duration": 5,
"generate_audio": false
}'
仅 active 状态素材可用于生成;同一次请求引用的多张素材须来自同一素材组。
响应示例
{
"id": "ut-abc123def456",
"task_id": "ut-abc123def456",
"object": "video",
"model": "seedance-2-0",
"status": "queued",
"progress": 0,
"created_at": 1712563200
}
⌘I
