1. The process of synchronizing audio with video after filming or recording has been completed, typically in film and television production.
Usage: film and television production term; also called ADR (automated dialogue replacement) when referring to dialogue

1. To synchronize audio with video after the original recording, especially by re-recording dialogue or adding sound effects in post-production.
Usage: film and television production term; present participle or gerund form of 'postsync'

Examples

• The director decided postsyncing was necessary because the original dialogue was too noisy.
• Postsyncing allows actors to re-record their lines in a controlled studio environment.
• The film required extensive postsyncing to match the actors' lips with the final audio.
• They are postsyncing the entire foreign language version of the movie.
• Postsyncing is a common practice in action films where explosions and gunfire make dialogue inaudible.