Blog

x265 2.3 Released

By Pradeep Ramachandran Version 2.3 Release date – 15th February, 2017. Encoder enhancements New SSIM-based RD-cost computation for improved visual quality, and efficiency; use –ssim-rd to exercise. Multi-pass encoding can now share analysis information from prior passes (in addition to rate-control information) to improve performance and quality of subsequent passes; to your multi-pass command-lines that use […]

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x265 2.2 Released

By Pradeep Ramachandran Release date – 26th December, 2016. Encoder enhancements Enhancements to TU selection algorithm with early-outs for improved speed; use –limit-tu to exercise. New motion search method SEA (Successive Elimination Algorithm) supported now as :option: –me 4 Bit-stream optimizations to improve fields in PPS and SPS for bit-rate savings through –opt-qp-pps, –opt-ref-list-length-pps, and […]

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HEVC Advance Announces ‘Royalty Free’ HEVC Software

By Tom Vaughan Major initiative designed to rapidly accelerate widespread HEVC (H.265)/UHD adoption on mobile devices and personal computers http://www.prnewswire.com/news-releases/hevc-advance-announces-royalty-free-hevc-software-300367212.html BOSTON, Nov. 22, 2016 /PRNewswire/ — HEVC Advance, an independent licensing administrator, today announced a major software policy initiative to rapidly accelerate widespread HEVC/UHD adoption in consumer mobile devices and personal computers.  Under the software […]

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x265 2.1 Released

By Pradeep Ramachandran x265 version 2.1 has been released.  Full documentation is available at http://x265.readthedocs.org/en/stable/ Release Notes for 2.1 Encoder enhancements Support for qg-size of 8 Experimental support for slice-parallelism. Able to insert non-IDR I-frames at scene changes when encoding with fixed GOP lengths (min-keyint = keyint) API changes Encode user-define SEI messages passed in through […]

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A Proposal to Accelerate HEVC Adoption

By Tom Vaughan Clogged pipes  Annual global Internet traffic is no longer measured in Megabytes, Gigabytes, Terabytes, or even Petabytes.  This year, global IP traffic will be more than one Zettabyte (a trillion billion, or 1,000,000,000,000,000,000,000 bytes)[1].  By far the biggest driver of IP traffic growth is video.  Today, more than 70% of all IP […]

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x265 v2.0 released

By Pradeep Ramachandran x265 version 2.0 has been released. This release supports many new features as well as support for ARM assembly optimizations for most basic pixel and ME operations, as well as SAO cleanups and a fully tested reconfigure functionality. Full documentation is available at http://x265.readthedocs.org/en/stable/ =========================================== New Features ========================================= • uhd-bd: Enable Ultra-HD […]

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x265 version 1.9

By By Pradeep Ramachandran x265 version 1.9 has now been released. This release supports many new features as well as additional assembly optimizations for Main12, intra prediction and SAO. Recently added features lookahead-slices, limit-refs and limit-modes have been enabled by default in the supported presets. Full documentation is available at http://x265.readthedocs.org New Features Quant offsets: […]

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Performance Presets

By Tom Vaughan x265 has ten performance presets which enable anyone to make a good choice between encoding speed and compression efficiency.  These presets are combinations of x265 settings that should provide the best possible result at the encoding speed that you want to achieve. If you want the highest compression efficiency (quality at your […]

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HEVC Advance Reduces Proposed License Fees

By Tom Vaughan The patent licensing organization known as HEVC Advance has announced a revision to the royalty rates they propose to charge companies who sell hardware, software and content that utilizes the HEVC standard. Our opinion:  While these rates are a good step in the right direction, they are still many times higher than […]

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HEVC Advance Reduces Proposed License Fees

By Tom Vaughan The patent licensing organization known as HEVC Advance has announced a revision to the royalty rates they propose to charge companies who sell hardware, software and content that utilizes the HEVC standard. Our opinion:  While these rates are a good step in the right direction, they are still many times higher than […]

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