The phrase refers to the highest-performing artificial intelligence systems designed to synchronize the movement of digitally generated or manipulated lips with corresponding audio. An example is software that allows a cartoon character to realistically speak lines recorded by an actor or the ability to modify a video to accurately portray a speaker delivering content in a different language.
This technology is important because it enhances realism in various applications, from animation and video games to film production and dubbing. It offers significant benefits by reducing the manual effort and time previously required to achieve convincing results. Historically, lip synchronization was a painstaking, frame-by-frame process completed by animators. Now, automated solutions greatly accelerate production workflows and improve the quality of the final product.