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x265 Encoder is a free software library and application for encoding video streams into the H265/MPEG-H HEVC compression format, and is released under the terms of the GNU GPL. x265 CLI is a command line software. x265 is used in several free video converters like Handbrake, Xvid4PSP, StaxRip, RipBot264, MEGUI, Xmedia Recode, etc. See All features how to install on Linux/Mac OSX.

Free software
OS:Windows Mac Linux
Version:2.8 / 2.8+45 Nightly
Released:Jul 7,2018
File size:1MB
7.4/10
13 votes

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x265 Encoder screenshot
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Latest version

2.8 / 2.8+45 Nightly (July 7, 2018)




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Download x265 Encoder 2.8 Windows  [1MB]  [Win]  [Portable]

Download x265 Encoder 2.8 Mac  [Mac]

Download x265 Encoder 2.8 Linux  [Linux]




Download Beta and other versions

Download x265 Encoder 2.8+45 Nightly Windows  [Win]

Download x265 Encoder 2.8 from another mirror site  [Win]




Supported operating systems

WinWindows MacMac OS LinuxLinux




License

Free software




More information and other downloads





Version history / Release notes / Changelog


Version 2.8
Release date - 21/05/2018

New features
--asm avx512 used to enable AVX-512 in x265. Default disabled.
For 4K main10 high-quality encoding, we are seeing good gains; for other resolutions and presets, we don’t recommend using this setting for now.
--dynamic-refine dynamically switches between different inter refine levels. Default disabled.
It is recommended to use :option:`–refine-intra 4’ with dynamic refinement for a better trade-off between encode efficiency and performance than using static refinement.
--single-sei
Encode SEI messages in a single NAL unit instead of multiple NAL units. Default disabled.
--max-ausize-factor controls the maximum AU size defined in HEVC specification.
It represents the percentage of maximum AU size used. Default is 1.
VMAF (Video Multi-Method Assessment Fusion) Added VMAF support for objective quality measurement of a video sequence. Enable cmake option ENABLE_LIBVMAF to report per frame and aggregate VMAF score. The frame level VMAF score does not include temporal scores. This is supported only on linux for now.
Encoder enhancements
Introduced refine-intra level 4 to improve quality.
Support for HLG-graded content and pic_struct in SEI message.
Bug Fixes
Fix 32 bit build error (using CMAKE GUI) in Linux.
Fix 32 bit build error for asm primitives.
Fix build error on mac OS.
Fix VBV Lookahead in analysis load to achieve target bitrate.

View full changelog




All features


Encoder features
Full prediction and transform quad-tree recursion supported
Adaptive B-frame placement
B-frames as references / arbitrary frame order
CABAC entropy coding
Intra: all block types (32x32, 16x16, 8x8, 4x4, and PCM with all predictions)
Inter P: all partitions (from 64x64 down to 8x4)
Inter B: partitions from 64x64 down to 8x4 (including all merge modes
and biprediction)
Weighted prediction for P slices
Multiple reference frames
Ratecontrol: constant quantizer, constant quality, single pass ABR, optional VBV
Scenecut detection
Parallel encoding on multiple CPUs, both frame-level and wavefront parallelism


Linux x265 Install Instructions
# ubuntu packages:
$ sudo apt-get install mercurial cmake cmake-curses-gui build-essential yasm
# Note: if the packaged yasm is older than 1.2, you must download yasm (1.3 recommended) and build it

$ hg clone https://bitbucket.org/multicoreware/x265
$ cd x265/build/linux
$ ./make-Makefiles.bash
$ make


Mac OS X x265 Install Instructions
The latest Mac OS X 10.8 gcc and clang based compilers can build x265 using the linux instructions above. Xcode 5 with the most recent patches can build, debug, and profile x265.




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DivX HEVC Encoder







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13 reviews, Showing 1 to 5 reviews

I'd guess most will have no idea how to use this at all! You need the hardware and power to use it well. Try playing this on a tablet etc and watch your battery drain superfast. Decoder cant keep up with h265 encoded video frames. Might be ready in 5 years!!


Jul 5, 2018 Version: 2.8 OS: Windows 7 64-bit Ease of use: 5/10 Functionality: 7/10 Value for money: 10/10 Overall: 7/10



Most won't have a clue how to use it and will need a GUI. This codec is only worth using if you need small bit rates as it excels and you only need to use half as h264. Quality of h264/h265 is same at higher bit rate so they say, but h265 still washes out detail. Who wants to use low bit rate these days or has the CPU power to decode it on a PC or tablet as yet?

Long way to go before any compatible hardware addresses the huge power needs of this codec. Also enclosing takes ages with this codec. H264 is still the daddy!



May 25, 2018 Version: 2.8 OS: Windows 10 64-bit Ease of use: 1/10 Functionality: 7/10 Value for money: 10/10 Overall: 7/10



Post #5 by D88M
x265 is a command line software.
x265 is used in several free video converters like Handbrake, StaxRip, MEGUI, etc.
Apparently you ability is limited to Encoder GUIs
Try learning CLI, it's simple
I give 10/10 for x265, superb encoder...obviously



Feb 9, 2018 Version: 2.6+37 OS: Windows 10 64-bit Ease of use: 10/10 Functionality: 10/10 Value for money: 10/10 Overall: 10/10



No comments. Rating it only.


Aug 9, 2017 Version: 2.5+6-d11482e5fedb OS: Windows 7 64-bit Ease of use: 7/10 Functionality: 8/10 Value for money: 10/10 Overall: 9/10



I'll second that, it has some time to go before it unseats x264. I'm sure it will be fine a couple years down the line when hardware has been adapted to it but at the moment the code just drains CPU power, and any video encoded in x265 is a massive decoding nightmare to process it. MX player on android plays it but not smoothly and powers seeps away from the tablet battery same as in any Windows based laptop even with a fast processor. I tried encoding a file in x265 and it was so SLOoooW! Chinese(no offense!) water torture springs to mind. X264vfw is still the tops for me!!!


Jul 1, 2017 Version: stable & nightly OS: Windows 7 64-bit Ease of use: 6/10 Functionality: 7/10 Value for money: 10/10 Overall: 7/10


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