patna the intricate details of animation and visual effects were discussed at length at a workshop on visual effects organized by the college of arts and crafts patna university in association with a private firm here on thursday addressing the workshop key resource person abhimanyu pratap singh said visual effects is the process by which imagery is created or manipulated outside the context of a liveaction shot in filmmaking and video production the integration of liveaction footage and other liveaction footage to create realistic imagery is called vfx he said vfx involves the integration of liveaction footage which may include incamera special effects and generatedimagery digital or optics animals or creatures which look realistic but would be expensive impractical timeconsuming or impossible to capture on film visual effects using computergenerated imagery cgi have more recently become accessible to the independent filmmaker with the introduction of affordable and relatively easytouse animation and compositing software he saidsingh said special or visual tricks are used in the theatre film television video game and simulator industries to simulate the imagined events in a story or virtual world with the emergence of digital filmmaking a distinction between special effects and visual effects has grown with the latter referring to digital postproduction while special effects referring to mechanical and optical effects all the faculty members and students of the college attended the workshop