Practical effect in the context of "Post-production"

Animation is a filmmaking technique whereby still images are manipulated to create moving images. In traditional animation, images are drawn or painted by hand on transparent celluloid sheets to be photographed and exhibited on film. Animation has been recognized as an artistic medium, specifically within the entertainment industry. Many animations are either traditional animations or computer animations made with computer-generated imagery (CGI). Stop motion animation, in particular claymation, is also prominent alongside these other forms, albeit to a lesser degree.

Animation is contrasted with live action, although the two do not exist in isolation. Many filmmakers have produced films that are a hybrid of the two. As CGI increasingly approximates photographic imagery, filmmakers can relatively easily composite 3D animated visual effects (VFX) into their film, rather than using practical effects.

A bullet hit squib or a blood squib is a practical, pyrotechnic special effect device used to simulate the appearance of a person being shot and wounded in films, TV shows and theatre performances. This is achieved by detonating a small explosive hidden in the actor's clothing, bursting open a pre-scored hole and a packet of fake blood to create an aesthetic that filmmakers and audiences alike have become accustomed to associating with a gunshot wound.

The device comprises a squib (a small, tablet-shaped, firecracker-like explosive) with an integrated igniter or glow wire, a pack of simulant (often fake blood), a protective shield and padding attached to the actor's costume. It is connected to a battery and a remote, allowing the squib to be triggered by the actor or a crew member.