said by Bob4:Actually, SMPTE 292M specifies 1.485 Gbps as the nominal data rate for uncompressed HD.
Uncompressed would be 1200 Mbps (1.2 Gbps). So all HD is compressed.
It gets confusing in transmission because the channel usually receives several streams multiplexed together, often at least 1 HD and 1-2 SD streams, into that bandwidth.
Uncompressed HD video is very pretty, but not often seen in the wild.