What is the meaning of Playback?

The replaying of something previously recorded, especially sound or moving images.

  Lip-syncing.

playback singing

lip-syncing

playback (replaying of recorded sound or moving images)

lip-syncing, lip-synching

lip-syncing

playback

playback singing

lip-syncing

playback (replaying of recorded sound or moving images)

lip-syncing

lip-syncing, lip-synching

playback singing

lip-syncing

Source: wiktionary.org