The tried-and-true method is to use third-party apps like JustStream from Electronic Team. How can I screen mirror for free? A few different ways. Any computer with macOS installed can be mirrored on your big screen. Since mirroring is the same as screen sharing, you should just install JustStream and go on with your screen sharing tasks. This app should have mirroring functionality. Without doubt! You can learn how to do this with JustStream following the steps provided on this webpage. To stop the mirroring process, use the 'Stop Streaming' button. There are other ways to start mirroring too. All the TVs that are on the same wireless network will be listed there. Now select the LG smart TV from the list of available devices. From the list of monitors connected to this Mac select the screen you will be mirroring to the TV set. Since this is a menu bar application, you'll have to click its icon in the menu bar. Download JustStream app and install it on your Mac computer you can download it from this page.
Mouse clicks can also be captured and highlighted in the output video. For instance, it allows you to capture mouse cursor movements on the TV screen. Added options for mirroring JustStream offers some amazing mirroring options.