A telesync (TS) is a bootleg recording of a film recorded in a movie theater, often (although not always) filmed using a professional camera on a tripod in the projection booth, the audio of a TS is captured with a direct connection to the sound source (often an FM micro broadcast provided for the hearing-impaired, or from a drive-in theater). Sometimes the bootlegger will tape or conceal wireless microphones close to the speakers for better sound quality.
The true definition of telesync would include the film being synchronized to the camera’s own frame rate and shutter timing as done by television companies when preparing celluloid film for broadcast. Bootleg TS rarely, if ever, uses this form of synchronization which can lead to additional temporal aliasing. A TS uses cam video with better-quality audio As technology gets better, the quality of telesyncs also improves, although even the best telesyncs are lossy and will be inferior in quality to direct rips from Blu-ray, DVD or digital transfers from the film itself (see telecine). Although very few at the moment, some release groups use high-definition video cameras to get the clearest picture possible.
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