How do you make lightsaber movie effects?

To create lightsaber effects in movies, filmmakers typically use visual effects software like Adobe After Effects or software specifically designed for compositing and visual effects, such as Autodesk Maya or Blender. The process involves filming actors with a prop lightsaber, then digitally adding the glowing blade in post-production by creating a cylindrical shape, applying a glow effect, and matching the color to the desired lightsaber hue. Motion tracking is also used to ensure the lightsaber's glow follows the actor's movements seamlessly. Finally, sound effects are added to enhance the realism of the lightsaber battles.