router_mine.ex

  scope "/", Rumbl do
    pipe_through :browser # Use the default browser stack

    get "/", PageController, :index
    resources "/users", UserController, only: [:index, :show, :new, :create]
    resources "/sessions", SessionController, only: [:new, :create, :delete]
  end

  scope "/manage", Rumbl do
    pipe_through [:browser, :authenticate_user]

    resources "/videos", VideoController
  end

router_your.ex

  scope "/", Rumbl do
    pipe_through :browser # Use the default browser stack
    get "/", PageController, :index
    resources "/users", UserController, only: [:index, :new, :show, :create]
    resources "/sessions", SessionController, only: [:new, :create, :delete]

    scope "/manage" do
      pipe_through [:browser, :authenticate_user]

      resources "/videos", VideoController
    end
  end