Why can't I see each other when sharing the split screen?

1, there is something wrong with the software; 2. The mobile phone has no front camera; 3. Computer setup problems; 4. Computer or collected system hardware is not supported.

Open the QQ group that needs to share the screen, and click the phone button in the upper right corner; After clicking, click the current group in the pop-up menu to initiate directly; After the QQ phone is turned on, click the video button in the red box; In this way, you can enter a video interface and click on the sharing picture on the screen.