Add dubbing a video example using node(typescript)

[YangVincent]

Hello! Do you know if this still works? It seems to return this response:

statusCode: 422,
  body: {
    detail: [
      {
        loc: [ 'body', 'file' ],
        msg: "Expected UploadFile, received: <class 'str'>",
        type: 'value_error'
      }
    ]
  }