Although for most networks,

Although for most networks, 28 Mbps 1920×1080 material would be considered non-HD, especially for inter-frame sources (such as H.264/MP4/MPEG-2) where the broadcast standard calls for 50Mbps as a minimum, or for intra-frame compressions (DVCPROHD/AVC-Intra/HDCAM) where the minimum is 100Mbps.