Personal Video Recorder (PVR)
A Personal Video Recorder (PVR), also referred to as Digital Video Recorder (DVR), is an interactive electronics device that records television shows in a digital format. The television shows can be stored client-side (on a hard disk in the set-top box) or server-side (stored by a video server at the head-end that has been designed for this purpose).
Most PVR recorders use the MPEG format for encoding signals.
TiVo is an example of a PVR.
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