By Ashok Kumar Mishra x265 version 2.7 is now out! The key new improvements include support for RADL pictures, moving from YASM to NASM assembler and reduced x265 build time by more than 50%. The tarball of this release can be downloaded from here. The latest release notes are available here. Happy Compressing!
Read moreBy Pradeep Ramachandran MSU recently released their 2017 codec comparison, where they compared x265 against other HEVC encoders, VP9 encoders, and the AV1 encoder. While the efforts that go into such large scale tests are appreciated, we as the x265 developers have to respectfully disagree with your conclusions drawn from this MSU report as we […]
Read moreBy Pradeep Ramachandran New features 1) x265 can now refine analysis from a previous HEVC encode (using options –refine-inter, and –refine-intra), or a previous AVC encode (using option –refine-mv-type). The previous encode’s information can be packaged using the x265_analysis_data_t data field available in the x265_picture object. 2) Basic support for segmented (or chunked) encoding added […]
Read moreBy Tom Vaughan Recently, a competitor (Beamr) published a blog post comparing their HEVC encoder to x265. They claimed that their HEVC encoder is faster, AND it produces better video quality. Of course, we’re used to people comparing other HEVC encoders to x265. x265 is available under an open source license, and therefore it is […]
Read moreBy Tom Vaughan Whether you want to compare two encoders, or compare different settings for the same encoder, it’s important to understand how to set up and run a valid test. These guidelines are designed to allow anyone to conduct a good test, with useful results. If you publish the results of an encoder comparison […]
Read moreBy Pradeep Ramachandran Encoder enhancements Improved grain handling with –tune grain option by throttling VBV operations to limit QP jumps. Frame threads are now decided based on number of threads specified in the –pools, as opposed to the number of hardware threads available. The mapping was also adjusted to improve quality of the encodes with minimal impact […]
Read moreBy Pradeep Ramachandran Today Intel launched the next generation of Xeon processors, the Intel Xeon Scalable Processor Family (code-named “Purley”), based on the Skylake CPU architecture. The Intel Xeon Scalable Processor Family is a powerful new generation of 14nm chips which provide significant improvements over the previous generation of Xeon processors (Xeon E5 v4 and E7 […]
Read moreBy Pradeep Ramachandran Encoder enhancements HDR10+ supported. Dynamic metadata may be either supplied as a bitstream via the userSEI field of x265_picture, or as a json jile that can be parsed by x265 and inserted into the bitstream; use –dhdr10-info to specify json file name, and –dhdr10-opt to enable optimization of inserting tone-map information only […]
Read moreBy Tom Vaughan Haivision contributions to the x265 open-source initiative have pushed boundaries on quality and performance of live video streaming on Intel processors MONTREAL, CANADA – APRIL 19, 2017 – At the 2017 NAB Show, Haivision will demonstrate a breakthrough in live 4Kp60 HEVC software-only performance video streaming, leveraging the unparalleled quality of x265 software […]
Read moreBy Tom Vaughan MulticoreWare, the developers of x265, will be at the National Association of Broadcasters convention in Las Vegas, Nevada, April 24-27th. You can find us in the South Hall, Upper, booth SU14002. We’ll be demonstrating the latest advances to x265, and our premium video encoding framework, UHDkit (which includes both x264 and x265, […]
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