H.265, also known as HEVC (High Efficiency Video Coding), is the latest video codec standard. The first version of the standard was ratified in April 2013.

H.265 achieves up to 2X bandwidth savings over previous generation H.264/MPEG-4 AVC based technologies. Alternately, H.265 encoded streams can offer higher quality than H.264 streams encoded at the same bit-rate. The H.265 standard supports UHD resolutions, including 4K and 8K, and format range extensions (RExt) for higher bit depths and up to 4:4:4 chroma sub sampling.

These advantages are a key factor driving the adoption of the H.265 codec across the Digital Media Creation, Distribution and Consumption chain. Applications include

  • Film Post Production, Non Linear Editing (NLE)
  • Mezzanine Formats, Storage
  • Contribution, Live Broadcast
  • Content Repurposing
  • VOD, OTT and Mobile Delivery
  • Monitoring, Integrated Receiver / Decoders (IRDs) and Studio Playback
  • Mobile Playback


Ittiam has been at the forefront of development of products based on H.265/HEVC technology. Available and licensed since 2012, Ittiam’s i265 family of H.265 software codecs (Encoders and Decoders) are available on a range of Intel x86 and ARM Cortex Ax platforms. They have been deployed and are in production in a number of customer products and services.

H.265 Encoders

Ittiam’s i265 family of H.265 encoders includes four encoder products to address different market segments with varying quality, performance and platform requirements.

i.265-PQ Pristine Quality H.265 Encoder

  • Highest Video Quality encoding, up to 4:2:2, 12 bit, 8K support
  • For premium content, offline encoding
  • Optimized for high throughput on a range of multi-socket Intel Xeon servers and Cloud instances

i.265-HS High Speed H.265 Encoder

  • Speed optimized, Broadcast quality encoding
  • Scales to HD and UHD Live Encoding
  • Supports multi-socket Intel Xeon Servers

i265-LP Low Power H.265 Encoder

  • GPU/OpenCL accelerated, real time HD encoding
  • Low Power for Digital Mobile News Gathering, Contribution, and dense transcoding applications
  • Available on Intel Haswell and Broadwell devices, with support for Intel HD Graphics, Iris and Iris Pro GPUs

i265-L4K Live 4K/UHD H.265 Encoder

  • Optimized for high performance, real time 4K/UHD encoding
  • For high resolution, live sports/event broadcasting and contribution
  • PCIe based hardware assisted encoding
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Related Products

Platforms & Availability

  • Encoders: Intel x86 multi-core processors. Intel HD Graphics, Iris and Iris Pro GPUs(Haswell and Broadwell platforms) for GPU/OpenCL acceleration
  • Decoders: Intel x86 and ARM Cortex Ax series multi-core processors. ARM MALI GPU for GPU/OpenCL acceleration
  • Recent News

    Ittiam and Silicon Philosophies collaborate to demonstrate Cinema Craft 4K H.265 (HEVC) and Ultra HD Blu-ray Encoder products at IBC 2015
    Read More
    Ittiam Systems demonstrates its H.265/HEVC based media transcoding software at COMPUTEX
    Read More
  • Highlights

    Superior Quality
    • Advanced algorithms tuned for highest video quality.
    • Comprehensive tool set
    • Support for 2-pass encoding and 4:2:2 12-bit range extensions
    • Support for Interlace encoding
    Look Ahead Processing
    • For better compression in presence of creative effects
    • Support for Scene Cuts, Fade, Dissolve and Flash
    Advanced Rate Control
    • Supports Constant Bit Rate (CBR) and Variable Bit Rate (VBR) encoding
    • Support for 2 pass encoding
    • Support for dynamic bit rate change
    Flexible GOP Control
    • Configurable IDR/CDR periods
    • Forced IDRs
    • Support for Aligned Intras across multiple bit rates and resolutions
    Class leading performance
    • Performance optimized across algorithms and code
    • Scalable design across cores and sockets
    • HD and UHD/4K real time processing on low power CPU + GPU using OpenCL
    • Optimized Multi-Bitrate (MBR) and Multi-resolution (MRES) encoding
    Easy Integration
    • Simple APIs
    • Support for Ancillary data, including SEI (Picture Timing), VUI (ITU-R BT.709/BT-601/BT.2020) and User Data (Closed Caption, AFD)
    • Linux,Microsoft Windows and Apple Mac OS X SDKs
    • Options for standalone SDK or FFMPEG plug-ins
    • Rigorous Functional, Video Quality and Interoperability Tests
    • Licensed and deployed in several products

    H.265 Decoders

    Ittiam’s i265 family of products includes H.265 decoders for Professional and Consumer applications.

    Professional H.265 Decoder

    • Multi-core software decoder for studio grade 4K/UHD Main 10 and 422 decoding
    • Optimized for Intel x86 architecture
    • Support for high data rates permitted for profile-level combination
    • Memory optimized mode with support for I-only, Skip P, Skip B modes for high channel density monitoring applications
    • Supports parsing and export of VUI parameters
    • Supports export of SEI User data (including CC data), AFD and PTS association
    • Error resilience and concealment support for erroneous streams
    • OpenCL based GPU acceleration for Intel HD Graphics, Iris and Iris Pro GPUs
    • Linux, Windows and Apple Mac OS X support
    • VLC and FFmpeg plug-ins available
    • For Broadcast IRD, monitoring, editing and related applications

    Consumer H.265 Decoder

    • Software only and GPU accelerated decoders for mobile and consumer grade processors
    • Optimized for 32 and 64 bit ARM Cortex Ax processors
    • Advanced Multithreading to achieve high performance scaling across cores
    • OpenCL based GPU acceleration support for ARM MALI GPUs. Also available on other GPUs with OpenCL support.
    • Up to UHD/4K support
    • Error Resilient. Exhaustively tested for Packet loss errors and bit errors
    • Google Android, Apple iOS and Microsoft Windows support
    • Integrated into Android StageFright Media Framework (Supports OMX APIs)
    • Integrated into FFmpeg, VLC and GStreamer frameworks.
    • For Smartphones, Tablets, Set Top Boxes and other consumer products
    • Customer products have shipped in millions of units
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