Optical Illusion stock videos and footage

Browse 12,000+ optical illusion stock videos and clips available to use in your projects, or search for escher or forced perspective to find more stock footage and b-roll video clips.

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In knot theory, a branch of mathematics, the trefoil knot is the simplest example of a nontrivial knot. The trefoil can be obtained by joining together the two loose ends of a common overhand knot, resulting in a knotted loop. As the simplest knot, the trefoil is fundamental to the study of mathematical knot theory. The trefoil knot is named after the three-leaf clover (or trefoil) plant. Alpha channel will be included when downloading the 4K Apple ProRes 4444 file only.

Visual elements; perfect for title overlays, tour visuals, music videos, experimental film, video projection, and endless possibilities

Visual elements; perfect for title overlays, tour visuals, music videos, experimental film, video projection, and endless possibilities

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