STi5205 is a high-performance, fully featured Standard Definition (SD) advanced decoding set-top box SoC (system-on-chip) from STMicroelectronics. It is suitable for STB markets across all networks (cable/satellite/DTT/x-DSL/IP) worldwide and supports H264/VC-1/MPEG2/AVS etc video decoding formats and various operating systems such as Linux, Windows and OS21.