The term "3D Stroke" refers to both a specific commercial plugin (Red Giant Trapcode 3D Stroke) and a general stylistic technique achieved through plugins like Video Copilot’s Saber. These tools allow paths to behave as volumetric objects, rotating in 3D space while maintaining a camera-facing profile, creating the illusion of light tubes, neon signage, and energy beams.
Interestingly, the specific "look" of early Trapcode plugins has become a stylistic choice. The "Y2K aesthetic" (Year 2000) is back in fashion. Designers deliberately use 3D Stroke without modern refinements—slightly aliased edges, neon gradients, and fast wipes—to evoke a sense of early 2000s tech optimism. It has moved from a utility to a retro effect. 3d stroke plugin after effects