Definition for 4:4:4:4

A non-subsampled (uncompressed), raw, high quality digitalFullcompass LogoDefinition: A signal or data expressed as series of the digits 0 and 1, typically represented by values of a physical quantity such as voltage or magnetic polarization. video image with an alpha channel, 1.  An image view that determines opacity. 2.  In video production for layer making channel, yielding 16-bits.