This document discusses key concepts in media language including codes, signs, and semiotics. It defines media language as referring to what audiences expect to see in a media text and how they make meaning. It then outlines some of the main technical elements that make up a media text, including mise-en-scene, camera, sounds, and editing. It explains semiotics as the study of signs, and discusses the theories of Saussure on the signifier and signified, and Peirce's categorization of signs into symbols, icons, and indexes. Finally, it mentions Barthes' work in applying semiotic concepts to culture and ideology.