The audio of a TS is captured with a direct connection to the sound source (often an FM microbroadcast provided for the hearing-impaired, or from a drive-in theater).
If a direct connection from the sound source is not possible, sometimes the bootlegger will tape or conceal wireless microphones close to the speakers, as it is better than a mic on the camera.
A TS can be considered a higher quality type of cam, that has the potential of better-quality audio and video.
[3] When an unlicensed copy of a film exists even before its official publication, it is often because a telesync version could be easily produced.
[4] In the German warez scene additional tags for the audio source can be added to a telesync release.