Open Adobe After Effects and create a new project. Set the composition size to 1920x1080 and the frame rate to 24 fps.
Step 2: Create the circle burst shape layer
Click on the "Layer" menu and select "New" > "Shape Layer". In the "Shape Layer" dialog box, select the "Ellipse" tool and draw a circle. Set the fill color to white and the stroke color to none.
Step 3: Animate the circle burst
Select the circle burst shape layer in the timeline and click on the "Transform" tab in the "Properties" panel. Set the "Scale" property to 0% and the "Rotation" property to 360 degrees.
Step 4: Create the burst effect
Click on the "Effects" menu and select "Generate" > "CC Burst". In the "CC Burst" dialog box, set the "Burst Type" to "Radial". Set the "Burst Size" to 500 and the "Burst Amount" to 100%.
Step 5: Render the animation
Click on the "Render" menu and select "Render". In the "Render Settings" dialog box, select the "Output Module" to "QuickTime Movie". Set the "Resolution" to 1920x1080 and the "Frame Rate" to 24 fps. Click on the "Render" button to start rendering the animation.
Step 6: Save the animation
Once the animation has rendered, click on the "File" menu and select "Save As". In the "Save As" dialog box, type a name for the animation and select the ".mov" file format. Click on the "Save" button to save the animation.