Just install split screen software on TV. Our company uses the Know Know screen, which is quite easy to use. I recommend you to try it. The steps are as follows: 1) Baidu searches official website, downloads the software apk to a USB flash drive, and plugs it into a TV set for installation; Or you can search the Zhihu screen from the TV viewing assistant and install it. 2) Login after installation and upload menus and videos. 3) Make a split-screen content release in the management background and you can play it.