H.264 Full-HD multi-channel codec meets video transmission needs

September 07, 2016 // By Graham Prophet
Socionext’s SC2M15 is a codec IC designed for video transmission equipment. The device can process decoding, transcoding and encoding of H.264/HVC video and audio signals with a single chip, and is suitable for applications including digital broadcasting and video streaming through Internet Protocol among others.

In addition to the conventional digital broadcasting, new applications such as video distribution through Internet Protocol (IP), infrastructure surveillance and medical imaging are driving the expansion of the video transmission equipment market. Requirements for these kinds of equipment include higher stability and lower overall system cost. To keep pace with such needs, the transition is underway from software-based to hardware-based architectures. Socionext’s codec IC meets those challenges, providing essential functions such as transcoding of multiple video streams and high image quality encoding at low bit rates.


The SC2M15 is equipped with all the necessary and sufficient functions for video transmission, which includes simultaneous transcoding of three channels of H.264 / full-HD video and audio, high image quality encoding at a low bit rate such as 1080i60 and 2Mbps. In addition, the SC2M15 is designed as a slave-type device, meaning it can be controlled by external CPU through serial interface, giving users the freedom to design various equipment for wide range of applications including digital broadcasting, security systems, and medical imaging, as well as video capture and in-house video communication systems.


Main specifications of SC2M15 include the following:


Video Encoding H.264 4:2:0 8bit (up to 1080p60, 1080i60)

Decoding Multiple channel operation: one input to three output

Transcoding H.264 4:2:0 8bit (up to 1080p60, 1080i60)

MPEG2 4:2:0 8bit (up to 1080p60)

MPEG2 to H.264,

H.264 to H.264

Multiple channel operation: maximum 1080i60 x 3 channels


Audio Encoding MPEG-2 AAC, HE-AAC and MPEG-1 Audio Layer 2

Transcoding MPEG-2 AAC, HE-AAC and MPEG-1 Audio Layer 2

Pass Through* MPEG-2 AAC, HE-AAC and MPEG-1 Audio Layer 2, AC3


Image Pre-Processing Scaling

OSD overlay*



Control UART x 1ch

Stream TS-Serial Input x 2ch, Output x 2ch, Ethernet MAC (RGMII ) x 1ch

Peripheral USB Storage (2.0 x 1ch, 3.0 x 1ch)


I²S Input x 1ch, I ²S Output x 1ch,

Video Parallel Input (YCbCr422) x