The claqueta, known in English as a clapperboard or slate, has been used in filmmaking since the early sound era to synchronise picture and audio and to identify each take. Its sharp clap gives editors a clear sync point in post production. Short recordings of that clap later spread online as standalone sound effects for memes, parodies and creator edits, where the noise alone signals that filming has started. LCA in this title appears to be a creator label rather than an official film source, so the clip is mainly shared for its editing use.