A unified solution to codingdecoding of different video formats such as 4:2:0, 4:2:2 and 4:4:4 is provided. The systems and methods facilitate the conversion of paper documents into electronic images and into more useful forms. These user credentials are programmatically inserted into a legacy host data stream, thereby giving the end user the look and feel of seamless access to all applicationssystems, including not only modem computing applicationssystems but also those residing on legacy hosts.