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Noun
1. combining audio and video recording in such a way that the sound is perfectly synchronized with the action that produced it; especially synchronizing the movements of a speaker's lips with the sound of his speech
(synonym) lip synchronisation, lip synch, lip sync
(hypernym) recording, transcription

The synchronization of audio and corresponding video signals so that there is no noticeable lack of simultaneity between them. (188 ) Note: An example of a lip synchronization problem is the case in which television video and audio signals are transported via different facilities (e.g., a geosynchronous satellite link and a landline) that have significantly differently delay times, respectively. In such cases it is necessary to delay the audio electronically to allow for the difference in propagation times.

SINCRONIZZAZIONE LABIALE [CINEMA]. SINCRONIZZAZIONE VOCE-IMMAGINI [CINEMA]