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Tool
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OpusTools is a set of tools to encode, inspect, and decode audio in the Opus audio codec format. Command line tools. Opus is a totally open, royalty-free, highly versatile audio codec. Opus is unmatched for interactive speech and music transmission over the Internet, but is also intended for storage and streaming applications.
Free software
OS:
File size: 4MB
Portable version
Old versions
Version history
OS:
File size: 4MB
Portable version
Old versions
Version history
Screenshots
Latest version
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Download OpusTools 0.2.1+2 libopus 1.3.1+1 4MB Win Portable
Download old versions
Software License
Supported operating systems
Windows Version history / Release notes / Changelog / What's New
libopus 1.3.1
Apr 12, 2019
This Opus 1.3.1 minor release fixes an issue with the analysis on files with digital silence (all zeros), especially on x87 builds (mostly affects 32-bit builds). It also includes two new features:
A new OPUS_GET_IN_DTX query to know if the encoder is in DTX mode (last frame was either a comfort noise frame or not encoded at all)
A new (and still experimental) CMake-based build system that is eventually meant to replace the VS2015 build system (the autotools one will stay).
Apr 12, 2019
This Opus 1.3.1 minor release fixes an issue with the analysis on files with digital silence (all zeros), especially on x87 builds (mostly affects 32-bit builds). It also includes two new features:
A new OPUS_GET_IN_DTX query to know if the encoder is in DTX mode (last frame was either a comfort noise frame or not encoded at all)
A new (and still experimental) CMake-based build system that is eventually meant to replace the VS2015 build system (the autotools one will stay).
View full changelog
All features
Opus can handle a wide range of audio applications, including Voice over IP, videoconferencing, in-game chat, and even remote live music performances. It can scale from low bitrate narrowband speech to very high quality stereo music. Supported features are:
Bitrates from 6 kb/s to 510 kb/s
Sampling rates from 8 kHz (narrowband) to 48 kHz (fullband)
Frame sizes from 2.5 ms to 60 ms
Support for both constant bitrate (CBR) and variable bitrate (VBR)
Audio bandwidth from narrowband to fullband
Support for speech and music
Support for mono and stereo
Support for up to 255 channels (multistream frames)
Dynamically adjustable bitrate, audio bandwidth, and frame size
Good loss robustness and packet loss concealment (PLC)
Floating point and fixed-point implementation
Bitrates from 6 kb/s to 510 kb/s
Sampling rates from 8 kHz (narrowband) to 48 kHz (fullband)
Frame sizes from 2.5 ms to 60 ms
Support for both constant bitrate (CBR) and variable bitrate (VBR)
Audio bandwidth from narrowband to fullband
Support for speech and music
Support for mono and stereo
Support for up to 255 channels (multistream frames)
Dynamically adjustable bitrate, audio bandwidth, and frame size
Good loss robustness and packet loss concealment (PLC)
Floating point and fixed-point implementation
Sections/Browse similar tools
Guides and How to's
Acronyms / Also Known As
Download OpusTools Portable download from the Download links under Download and Download other versions!
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| 2 reviews, Showing 1 to 2 reviews |
Great at what it does, but too complicated to use for most users. I much prefer he-aacV1 48kbps as the sweet spot. Any lower e.g using V2 makes the sound very tinny. Any higher is better sounding e.g 64kbps but recreates higher frequencies which most cannot hear anyways. Opus is better at these low bitrates, but why damage audio to even tinirr bitrates when lots of radio stations are using aacPlus these days to better use?
Review by John on
Jan 7, 2021 Version: 0.2.1
OS: Windows 8 64-bit Ease of use: 1/10
Functionality: 9/10
Value for money: 10/10
Overall: 8/10
Rating by fluidinmo on
May 30, 2017 Version: 1.2 beta
OS: Windows 10 64-bit Ease of use: 8/10
Functionality: 10/10
Value for money: 10/10
Overall: 10/10
| 2 reviews, Showing 1 to 2 reviews |
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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.
Download (mirror link) = A mirror link to the software download. It may not contain the latest versions.
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.)
Rating
Rating from 0-10.
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