In article , Alan Browne
says...
Bring it down a notch to 4:2:2 (per the dpreview article).

"The camera can read out its entire sensor fast enough to output 8-bit
4:2:2 4K video over HDMI at up to 30p, without the need for line
skipping or pixel binning."

Still - a lot of bandwidth - about 800 MB/s.

Doesn't the camera use at least a bit of compression to bring down the
data volume?
--
Alfred Molon

Olympus E-series DSLRs and micro 4/3 forum at
http://tech.groups.yahoo.com/group/MyOlympus/
http://myolympus.org/ photo sharing site