There are two major challenges when implementing high definition video distribution.
The first issue is the video signal’s data rate (or bandwidth). The effects the maximum cable length as there is data loss over longer distances. So the higher the data rate (or quality of the video and audio), the shorter the cables must be. When HDMI cables were first created, the consumer electronics industry envisioned it for in room, short cable runs. A bad HDMI signal can result in dropped or frozen frames (or even complete signal loss).
The second issue is content protection or copyright. Content protection can prevent what it considers unauthorized video distribution.