DVI/HDMI uses it's own encoding (which together with CML-based physical layer is called TMDS - Transition Minimised Differential Signaling), that encode 8bit sy

DVI/HDMI uses it's own encoding (which together with CML-based physical layer is called TMDS - Transition Minimised Differential Signaling), that encode 8bit symbols as 10bit codewords, not the original IBM's 8B10B encoding. In contrast to most line codes, TMDS encoding is really designed to reduce number of bit transitions and thus output signal bandwidth (in the MHz sense). Clock recovery is different from most high speed serial interfaces, as HDMI/DVI provides separate signal with reference clock (which essentially eliminates problem with receiver clock drift that would otherwise necessitate inserting additional transitions into signal).