此方法有一个常见的用例，如下所述。说明下方的按钮使用示例值填充 API Explorer，或打开全屏 API Explorer 显示使用这些值的代码示例。如果您更改值，代码示例也会动态更新。

This example lists caption tracks available for the Volvo Trucks "Epic Split" commercial, featuring Jean-Claude Van Damme. (This video was selected because it has many available caption tracks and also because it is awesome.)