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Description

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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
File size: 1MB
Portable version
Version history
7.2/10
15 votes
Rate it




Screenshots

x265 Encoder screenshot
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Latest version

3.1 (June 18, 2019)



Download


Visit developer's site

Download x265 Encoder 3.1 Windows  1MB  Win  Portable

Download x265 Encoder 3.1 Mac  Mac

Download x265 Encoder 3.1 Linux  Linux




Download other versions

Download x265 Encoder 3.1 from another mirror site  Win



Software License

Free software / FOSS (Free download and also Free and Open Source Software)



Supported operating systems

WinWindows MacMac OS LinuxLinux



More information and other downloads




Version history / Release notes / Changelog


Version 3.1
Release date - 18th June, 2019.

New features
x265 can invoke SVT-HEVC library for encoding through --svt.
x265 can now accept interlaced inputs directly (no need to separate fields), and sends it to the encoder with proper fps and frame-size through --field.
--fades can detect and handle fade-in regions. This option will force I-slice and initialize RC history for the brightest frame after fade-in.
API changes
A new flag to signal MasterDisplayParams and maxCll/Fall separately
Encoder enhancements
Improved the performance of inter-refine level 1 by skipping the evaluation of smaller CUs when the current block is decided as “skip” by the save mode.
New AVX2 primitives to improve the performance of encodes that enable --ssim-rd.
Improved performance in medium preset with negligible loss in quality.
Bug fixes
Bug fixes for zones.
Fixed wrap-around from MV structure overflow occurred around 8K pixels or over.
Fixed issues in configuring cbQpOffset and crQpOffset for 444 input
Fixed cutree offset computation in 2nd pass encodes.
Known issues
AVX512 main12 asm disabling.
Inconsistent output with 2-pass due to cutree offset sharing.

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.




Sections/Browse similar tools






Alternative to x265 Encoder


DivX HEVC Encoder







Guides and How to's


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15 reviews, Showing 1 to 5 reviews


Excellent software from a compression point of view, but torturous to set up and like Chinese water torture to encode. This is commercial application only. H264 is enough for me. It has been around for a bit now and the lack of H265 encoding out there shows this might never take off. Most users hardware can't cope with it even after all this time. That said it is the future, but when? For TV streaming only.

Review by Wesley on Jun 18, 2019 Version: 3.1 OS: Windows 10 64-bit Ease of use: 1/10 Functionality: 7/10 Value for money: 10/10 Overall: 5/10




Superb quality output, but mega mega slow and a pain to use/set up.

Review by Paulo on Oct 7, 2018 Version: 2.9 OS: Windows 7 64-bit Ease of use: 1/10 Functionality: 9/10 Value for money: 10/10 Overall: 6/10




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!!

Review by Paulo on 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!


Review by Tony on 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


Review by M99 on 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


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