1. First, enter the console of Dahua TV wall and select the TV wall that needs to bind the video source.

2. Then find the "Binding" option at the top of the TV wall interface, and click to enter the binding settings page. On the binding settings page, select the video source to bind, and click the "Bind" button.

3. Select the second video source to bind, and then click the Bind button. In the pop-up binding type selection box, select the "splicing" type to confirm the binding.

4. Finally, set the direction and position of splicing as needed to complete the binding setting.