The embedded visible-light video image identification system is designed using ADV7181&ADV7171 for digital video encoder/decoder based on TMS320DM642. The selected version of digital video encoder/decoder is emphatically analyzed in the comparative method, to expand the choice range of the digital video encoder/decoder of similar video systems. The architecture of this system and its function modules are analyzed.The problems occurred in the practice design and implementation process are studied and some solutions are given, and the schematic diagrams for the main parts are also given out. Lastly, it points out the possible improvements and the application foreground of the system.