Editing Serial digital interface (section)

====Other color encodings====
The dual-link and 3&nbsp;Gbit/s interfaces additionally support other color encodings besides 4:2:2 YCbCr, namely:

* 4:2:2 and 4:4:4 YCbCr, with an optional ''alpha'' (used for linear keying, a.k.a. [[alpha compositing]]) or data (used for non-video payload) channel
* 4:4:4 RGB, also with an optional alpha or data channel
* 4:2:2 YCbCr, 4:4:4 YCbCr, and 4:4:4 RGB, with 12 bits of color information per sample, rather than 10. Note that the interface itself is still 10 bit; the additional 2 bits per channel are multiplexed into an additional 10-bit channel on the second link.

If an RGB encoding is used, the three primaries are all encoded in the same fashion as the Y channel; a value of 64 (40 hex) corresponds to 0&nbsp;mV, and 940 (3AC hex) corresponds to 700&nbsp;mV.

12-bit applications are scaled in a similar fashion to their 10-bit counterparts; the additional two bits are considered to be [[Least significant bit|LSBs]].