a) The process of combining analog or digital video signals, e.g., red, green, and blue, into one composite signal.

b) To express a single character or a message in terms of a code. To apply the rules of a code.

c) To derive a composite luminance-chrominance signal from R, G, B signals.

d) In the context of Indeo video, the process of converting the color space of a video clip from RGB to YUV and then compressing it. See Compress, RGB, YUV. Compare Decode.