When shooting My World music videos, in order to get a smooth perspective, it's common to use multiple cameras or camcorders to capture different angles of the game scenes, and use video editing software to combine them together.

Specifically, the steps for shooting a My World music video usually include:

1. Setting the scene and characters: First, you need to determine the scene and characters you want to shoot, as well as the elements that need to be added to the scene, such as buildings, props, plants, etc.

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2. Prepare shooting equipment: You need to prepare multiple cameras or camcorders, as well as corresponding tripods, stabilizers, and other equipment to ensure that the captured images are stable and clear.

3. Setting up the camera position: According to the needs of the scene and the character, place the camera in the appropriate position in order to capture the required angle and scene.

4. Shooting: After setting the camera position, start shooting, and you can record different time periods as needed.

5. Post-production: After shooting, import the footage from different cameras into the video editing software, and create smooth perspective effects through editing, transitions, color grading, and other operations.

It's important to note that filming a My World music video requires a certain level of technical and equipment support, so if you don't have the relevant experience and equipment, you can consider looking for a professional video production company or team to assist in the filming.