关闭 Gemini Enterprise Agent Platform 的提示重写器中的 Veo

Veo 提供基于 LLM 的提示增强工具，也称为提示重写器。提示重写器可让您选择重写提示，以便在提示中添加视频说明、镜头抖动、转写和音效。提示越详细，生成的视频质量就越高。

如果您停用提示增强功能，视频质量以及输出内容与您提供的提示的相似程度可能会受到影响。此功能在 veo-2.0-generate-001 中默认启用。

仅当原始提示的长度少于 30 个字词时，API 响应才会传送重写的提示。

如需详细了解如何编写有效的文本提示来生成视频，请参阅 Veo 提示指南。

准备工作

1. In the Cloud de Confiance console, on the project selector page, select or create a Cloud de Confiance project.

   Roles required to select or create a project

   • Select a project: Selecting a project doesn't require a specific IAM role—you can select any project that you've been granted a role on.
   • Create a project: To create a project, you need the Project Creator role (roles/resourcemanager.projectCreator), which contains the resourcemanager.projects.create permission. Learn how to grant roles.

   Go to project selector

2. Enable the Agent Platform API.

   Roles required to enable APIs

   To enable APIs, you need the Service Usage Admin IAM role (roles/serviceusage.serviceUsageAdmin), which contains the serviceusage.services.enable permission. Learn how to grant roles.

   Enable the API

3. 为您的环境设置身份验证。

   选择标签页以了解您打算如何使用本页面上的示例：

   控制台

   当您使用 Cloud de Confiance 控制台访问 Cloud de Confiance by S3NS 服务和 API 时，无需设置身份验证。

   REST

   如需在本地开发环境中使用本页面上的 REST API 示例，请使用您提供给 gcloud CLI 的 凭证。

   安装 Google Cloud CLI，然后 使用联合身份登录 gcloud CLI。

   如需了解详情，请参阅 身份验证文档 中的 Cloud de Confiance 使用 REST 时进行身份验证。

关闭提示重写器

如需关闭提示增强功能，请执行以下操作：

pip install --upgrade google-genai

# Replace the `GOOGLE_CLOUD_PROJECT` and `GOOGLE_CLOUD_LOCATION` values
# with appropriate values for your project.
export GOOGLE_CLOUD_PROJECT=GOOGLE_CLOUD_PROJECT
export GOOGLE_CLOUD_LOCATION=global
export GOOGLE_GENAI_USE_ENTERPRISE=True

import time
from google import genai
from google.genai.types import GenerateVideosConfig

client = genai.Client()

# TODO(developer): Update and un-comment below line
# output_gcs_uri = "gs://your-bucket/your-prefix"

operation = client.models.generate_videos(
    model="veo-2.0-generate-001",
    prompt="a cat reading a book",
    config=GenerateVideosConfig(
        aspect_ratio="16:9",
        output_gcs_uri=output_gcs_uri,
        number_of_videos=1,
        duration_seconds=5,
        person_generation="dont_allow",
        enhance_prompt=False,
    ),
)

while not operation.done:
    time.sleep(15)
    operation = client.operations.get(operation)
    print(operation)

if operation.response:
    print(operation.result.generated_videos[0].video.uri)

# Example response:
# gs://your-bucket/your-prefix

POST https://us-central1-aiplatform.googleapis.com/v1/projects/PROJECT_ID/locations/us-central1/publishers/google/models/MODEL_ID:predictLongRunning

{
  "instances": [
    {
      "prompt": "TEXT_PROMPT"
    }
  ],
  "parameters": {
    "storageUri": "OUTPUT_STORAGE_URI",
    "sampleCount": "RESPONSE_COUNT",
    "durationSeconds": "DURATION",
    "enhancePrompt": ENHANCED_PROMPT
  }
}

curl -X POST \
     -H "Authorization: Bearer $(gcloud auth print-access-token)" \
     -H "Content-Type: application/json; charset=utf-8" \
     -d @request.json \
     "https://us-central1-aiplatform.googleapis.com/v1/projects/PROJECT_ID/locations/us-central1/publishers/google/models/MODEL_ID:predictLongRunning"

$cred = gcloud auth print-access-token
$headers = @{ "Authorization" = "Bearer $cred" }

Invoke-WebRequest `
    -Method POST `
    -Headers $headers `
    -ContentType: "application/json; charset=utf-8" `
    -InFile request.json `
    -Uri "https://us-central1-aiplatform.googleapis.com/v1/projects/PROJECT_ID/locations/us-central1/publishers/google/models/MODEL_ID:predictLongRunning" | Select-Object -Expand Content

{
  "name": "projects/PROJECT_ID/locations/us-central1/publishers/google/models/MODEL_ID/operations/a1b07c8e-7b5a-4aba-bb34-3e1ccb8afcc8"
}

后续步骤

• 根据文本生成视频
• 根据图片生成视频
• 详细了解提示
• 了解适用于 Veo on Gemini Enterprise Agent Platform 的 Responsible AI 及使用指南