如何获取API密钥

Visit Google Cloud Console

Create a new project or select an existing project

Select "APIs & Services" > "Enabled APIs & Services" in the left menu

Click "Enable APIs and Services" at the top

Search for and enable "YouTube Data API v3"

Select "Credentials" in the left menu

Click "Create Credentials" > "API key"

Copy the generated API key and paste it into the input box