Video editing includes cutting segments (trimming), re-sequencing clips, and adding transitions and other special effects. Linear video editing uses video tape and is edited in a very linear way. Several video clips from different tapes are recorded to one single tape in the order that they will appear. In filmmaking, visual effects (VFX) is the creation or manipulation of any on-screen imagery that does not physically exist in real life. VFX allows filmmakers to create environments, objects, creatures, and even people that would otherwise be impractical or impossible to film in the context of a live-action shot.