For a classic TV show like Friends (originally aired 1996–1997), a typically refers to a digital capture taken from a broadcast source that was originally distributed via Pay-Per-View or a premium cable channel (like HBO, Sky, or a local equivalent) rather than a standard network broadcast.
However, it's important to clarify: Friends was an network show, not a PPV event. So "PPVRip" in fan release circles is often a mislabel or refers to: friends season 03 ppvrip