Complex sentence: It is operated as part of MTV Networks, a subsidiary of Viacom and primarily features music videos and concert footage from the 1970s through the mid- 1990s, though it formerly included a wider range of genres and time periods.
Split into simpler sentences: It is operated as part of MTV Networks, a subsidiary of Viacom. It primarily features music videos and concert footage from the 1970s through the mid- 1990s, though it formerly included a wider range of genres and time periods.