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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. Command line software.
Free software
OS:
File size: 1MB
Portable version
Other versions
Version history
OS:
File size: 1MB
Portable version
Other versions
Version history
Screenshots
Latest version
Download
Download x265 Encoder 3.6 Windows 1MB Win Portable
Download x265 Encoder 3.6 Mac Mac
Download x265 Encoder 3.6 Linux Linux
Download other versions
Software License
Supported operating systems
Windows Mac OS Linux More information and other downloads
x265 Encoder GUIs/Frontends:
Handbrake, Xvid4PSP, StaxRip, RipBot264, VidCoder, MEGUI, Xmedia Recode.
Handbrake, Xvid4PSP, StaxRip, RipBot264, VidCoder, MEGUI, Xmedia Recode.
Version history / Release notes / Changelog / What's New
Version 3.6
Release date - 4th April, 2024.
New feature
Segment based Ratecontrol (SBRC) feature
Motion-Compensated Spatio-Temporal Filtering
Scene-cut aware qp - BBAQ (Bidirectional Boundary Aware Quantization)
Histogram-Based Scene Change Detection
Film-Grain characteristics as a SEI message to support Film Grain Synthesis(FGS)
Add temporal layer implementation(Hierarchical B-frame implementation)
Enhancements to existing features
Added Dolby Vision 8.4 Profile Support
API changes
Add Segment based Ratecontrol(SBRC) feature: "--[no-]sbrc".
Add command line parameter for mcstf feature: "--[no-]mctf".
Add command line parameters for the scene cut aware qp feature: "--scenecut-aware-qp" and "--masking-strength".
Add command line parameters for Histogram-Based Scene Change Detection: "--hist-scenecut".
Add film grain characteristics as a SEI message to the bitstream: "--film-grain <filename>"
cli: add new option --cra-nal (Force nal type to CRA to all frames expect for the first frame, works only with keyint 1)
Optimizations
ARM64 NEON optimizations:- Several time-consuming C functions have been optimized for the targeted platform - aarch64. The overall performance increased by around 20%. SVE/SVE2 optimizations
Bug fixes
Linux bug to utilize all the cores
Crash with hist-scenecut build when source resolution is not multiple of minCuSize
32bit and 64bit builds generation for ARM
bugs in zonefile feature (Reflect Zonefile Parameters inside Lookahead, extra IDR issue, Avg I Slice QP value issue etc..)
Add x86 ASM implementation for subsampling luma
Fix for abrladder segfault with load reuse level 1
Reorder miniGOP based on temporal layer hierarchy and add support for more B frame
Add MacOS aarch64 build support
Fix boundary condition issue for Gaussian filter
Release date - 4th April, 2024.
New feature
Segment based Ratecontrol (SBRC) feature
Motion-Compensated Spatio-Temporal Filtering
Scene-cut aware qp - BBAQ (Bidirectional Boundary Aware Quantization)
Histogram-Based Scene Change Detection
Film-Grain characteristics as a SEI message to support Film Grain Synthesis(FGS)
Add temporal layer implementation(Hierarchical B-frame implementation)
Enhancements to existing features
Added Dolby Vision 8.4 Profile Support
API changes
Add Segment based Ratecontrol(SBRC) feature: "--[no-]sbrc".
Add command line parameter for mcstf feature: "--[no-]mctf".
Add command line parameters for the scene cut aware qp feature: "--scenecut-aware-qp" and "--masking-strength".
Add command line parameters for Histogram-Based Scene Change Detection: "--hist-scenecut".
Add film grain characteristics as a SEI message to the bitstream: "--film-grain <filename>"
cli: add new option --cra-nal (Force nal type to CRA to all frames expect for the first frame, works only with keyint 1)
Optimizations
ARM64 NEON optimizations:- Several time-consuming C functions have been optimized for the targeted platform - aarch64. The overall performance increased by around 20%. SVE/SVE2 optimizations
Bug fixes
Linux bug to utilize all the cores
Crash with hist-scenecut build when source resolution is not multiple of minCuSize
32bit and 64bit builds generation for ARM
bugs in zonefile feature (Reflect Zonefile Parameters inside Lookahead, extra IDR issue, Avg I Slice QP value issue etc..)
Add x86 ASM implementation for subsampling luma
Fix for abrladder segfault with load reuse level 1
Reorder miniGOP based on temporal layer hierarchy and add support for more B frame
Add MacOS aarch64 build support
Fix boundary condition issue for Gaussian filter
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
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
Sections/Browse similar tools
Alternative to x265 Encoder
DivX HEVC Encoder
Guides and How to's
Notify me when software updated or report software
| 27 reviews, Showing 1 to 5 reviews |
Love the presets, implementations. H265 rules!
Review by Miss Sopho Pizza Girl on
Jan 2, 2023 Version: 3.5
OS: Windows 10 64-bit Ease of use: 10/10
Functionality: 10/10
Value for money: 10/10
Overall: 10/10
This is designed for lower bitrates(outclasses H264 easily) or streaming. H264 and H265 at high bitrates will give similar quality, with H264 holding a slight edge for archiving. Now what is classed at high bitrates? That said low bitrates will look better using hevc compared to other codecs, but may still look bloody awful visually, just less awful than the others. All down to what you deem as quality for your eyes. I prefer h264 for archiving at 1080p. 4k is a waste of time for my old eyes and I don't have the best hardware to utilize this h265 codec at the moment.
Review by Roger on
Nov 22, 2022 Version: 3.50
OS: Windows 10 64-bit Ease of use: 9/10
Functionality: 10/10
Value for money: 10/10
Overall: 10/10
To be fair there are genuine gripes about how 'slower' this codec is, but that depends on the user's rig and compatibility issues. I use very modern hardware and still notice choppy decoding and encoding of hevc needs some setting to maximize its benefits. I know dozen of folks who have had major issues with h265 in Win10 so whingers and fan boys aside(he winks!) let's not get to hung up on things.
We had moans when Xvid was phased out and now h264 is apparently facing the same chop depending on whom you listen to, but nonetheless a great codec and one which I prefer to still use for simplicity.
We had moans when Xvid was phased out and now h264 is apparently facing the same chop depending on whom you listen to, but nonetheless a great codec and one which I prefer to still use for simplicity.
Review by Peter on
Mar 9, 2021 Version: 3.5 RC1
OS: Windows 8 64-bit Ease of use: 6/10
Functionality: 8/10
Value for money: 10/10
Overall: 6/10
to Not Gaz:
You are totally right.
As long as there's always rippers use x265 and no av1/vp9 shit bdrips in my hard disk, I'm totally fine with it.
I'm never a "silly fanboy", just need to say something 'cause of some UNFAIR reviews here.
You are totally right.
As long as there's always rippers use x265 and no av1/vp9 shit bdrips in my hard disk, I'm totally fine with it.
I'm never a "silly fanboy", just need to say something 'cause of some UNFAIR reviews here.
Review by steve on
Mar 9, 2021 Version: 3.4
OS: Windows 10 Ease of use: 10/10
Functionality: 10/10
Value for money: 10/10
Overall: 10/10
AV1 or V9 is sinking this into the dust along with its silly kiddy fanboys.
Review by Not Gaz on
Mar 9, 2021 Version: 3.5
OS: Windows 10 64-bit Ease of use: 1/10
Functionality: 1/10
Value for money: 1/10
Overall: 1/10
| 27 reviews, Showing 1 to 5 reviews |
| 1 tool hits, Showing 1 to 1 tools |
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Rating
Rating from 0-10.
NEW SOFTWARE= New tool since your last visit
NEW VERSION= New version since your last visit
NEW REVIEW= New review since your last visit
NEW VERSION= New version
Latest version
Version number / Beta version number / Update version number and when it whas released.
Type and download
NO MORE UPDATES? = The software hasn't been updated in over 2 years.
NO LONGER DEVELOPED = The software hasn't been updated in over 5 years.
RECENTLY UPDATED = The software has been updated the last 31 days.
Freeware = Download Free software.
Freeware Trialware = Download Free software but some parts are trial/shareware.
Free software = Download Free software and also open source code also known as FOSS (Free and Open Source Software).
Free software Trialware = Download Free software and also open source code but some parts are trial/shareware.
Freeware Ads = Download Free software but supported by advertising, usually with a included browser toolbar. It may be disabled when installing or after installation.
Free software Ads = Free Download software and open source code but supported by advertising, usually with a included browser toolbar. It may be disabled when installing or after installation.
Trialware = Also called shareware or demo. Free Trial version available for download and testing with usually a time limit or limited functions.
Payware = No demo or trial available.
Portable version = A portable/standalone version is available. No installation is required.
v1.0.1 = Latest version available.
Download beta = It could be a Beta, RC(Release Candidate) or an Alpha / Nightly / Unstable version of the software.
Download 15MB = A direct link to the software download.
Win = Windows download version. It works on 32-bit and 64-bit Windows.
Win64 = Windows 64-bit download version. It works only on 64-bit Windows.
Mac = Mac download version. It works on 32-bit and 64-bit Mac OS.
Mac64 = Mac OS download version. It works only on 64-bit Mac OS.
Linux = Linux download version.
Portable = Portable version. No installation is required.
Ad-Supported = The software is bundled with advertising. Be careful when you install the software and disable addons that you don't want!
Visit developers site = A link to the software developer site.
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Download old versions = Free downloads of previous versions of the program.
Download 64-bit version = If you have a 64bit operating system you can download this version.
Download portable version = Portable/Standalone version meaning that no installation is required, just extract the files to a folder and run directly.
Portable version available = Download the portable version and you can just extract the files and run the program without installation.
Old versions available = Download old versions of the program.
Version history available = Complete changelog on our site.
= Windows version available. = Mac OS version available. = Linux version available.Our hosted software are virus and malware scanned with several antivirus programs using www.virustotal.com. (NOTE! Just one virustotal warning is 99.9% a false positive. And some software might receive 2-6 warnings but it's if they are not all same virus/trojan then it's 99% false positives.)
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