The Atria Logic AL-H264E-SW is a software-based, low power H.264 (AVC) Baseline Profile video encoder IP core, targeted for mobile and non-mobile, low power devices in industrial, medical and CE applications. Industrial applications include remote monitoring of manufacturing plants, video surveillance (IP cameras and network recorders), broadcast/streaming weather cams and portable video recorders, train/bus/truck/airplane black box recorders. Medical applications include operating theater recorders and IP cameras, as well as PACS video archiving. CE applications include action cams, home surveillance cams, netbooks, tablets and smartphones.

The encoder supports AVC Baseline Profile I+P encoding up to Level 4.1 (1080p30), and supports both single-pass variable bit rate (VBR) and constant bit rate (CBR) encoding. The encoder is fully H.264 standards compliant, with support for all block sizes for inter and intra prediction,1/2 and 1/4 pel prediction, unconstrained intra prediction and cross-frame boundary motion estimation modes. An in-loop deblocking filter is also included for enhanced video quality (i.e., bit rates). Support for rate distortion optimization for mode decisions provides exceptional video quality at low bit rates.

The implementation includes power-optimizing algorithms that enable the encoder to run at very low power in a Linux or MS Windows environment on a wide range of ARM processors, such as ARM7, ARM9, ARM9E and ARM11, as well as on the EZchip Tilera TilePro64 processors.

Block Diagram


  • Remote monitoring
  • Video surveillance IP cameras and network video recorders
  • Broadcast/streaming weather cams and portable video recorders
  • Train/bus/truck/airplane black box recorders
  • Operating theater IP cameras and PACS video recorders
  • Action cams
  • Home surveillance cams
  • Netbooks, tablets and smartphones


  • H.264 I+P Baseline Profile up to Level 4.2 encoding
  • Constant bit rate (CBR) and variable bit rate (CBR) support
  • YUV 4:2:0 progressive input format
  • H.264 compliant NALU formatted output bit stream
  • Speed and power optimized proprietary ME
  • Inter prediction for all block sizes up to 4x4 and at 1/2 and 1/4 pel resolutions
  • Intra prediction for all 4x4 and 16x16 luma and all chroma prediction modes
  • RDO mode decisions for optimal video quality at any bit rate
  • In-loop deblocking filter for enhanced video quality
  • Optimized for ARM7, ARM9, ARM9E and ARM11 processors
  • Optimized for EZchip Tilera TilePro64 processors


  • Fully ISO/IEC 14496-10 standards compliant
  • Speed and power-optimized ME engine
  • Fully software-optimized implementation
  • Support for broad range of ARM processors
  • Low-power optimized implementation