Help us keep the list up to date and submit new video software here.

Try DVDFab and remove iTunes protection, copy, convert or make Blu-rays and DVDs! Download free trial !

Software Home »



AC3Filter is a high quality free audio decoder and processor filter. It allows media players to playback movies with AC3 and DTS audio tracks. Also it can process any audio track, much of processing options allows to adjust the sound in almost any way. It is possible to upmix any audio source to 6 channels. Filter can do multi-channel and digital (SPDIF) output. It can encode any audio source to AC3 on-the-fly and send it over SPDIF to the receiver. The full installation contains OPENCANDY! Use the Lite version

Free software Ads
OS: Win
File size: 4MB
Other versions
Old versions
Version history
7 votes
Rate it


AC3Filter screenshot
Click to enlarge screenshot

AC3Filter screenshot 2
Click to enlarge screenshot

AC3Filter screenshot 3
Click to enlarge screenshot
Latest version

2.6.0b / 2.6.0b Lite ADFREE (April 5, 2013)


Visit developer's site

Download AC3Filter 2.6.0b  4MB  Win  Ad-Supported installation!

Download Beta and other versions

Download AC3Filter 2.6.0b Lite ADFREE  1MB  Win

Download AC3Filter old versions

30 files74.4MB

Software License

Free software but ad-supported installation. Be careful when installing it to avoid unwanted addons!

Supported operating systems


More information and other downloads

Download AC3Filter tools here or AC3filter tools 1.0a mirror (direct link) here, command-line tools with AC3 encoder and decoder, SPDIF format converter, parametric filter, graphic equalizer and more.

NOTE! The main version containts OPENCANDY and it may install unwanted addons when you install it. Use the LITE ADFREE version instead(it only contains 32bit filters though).

Version history / Release notes / Changelog

AC3Filter 2.6.0b
Released: 2013-04-05
FFMPEG updated to v1.1.4
Use FFMPEG for AAC decoding (should be less crashes because faad bugs).
SPDIF/AC3 encoder: encode 5.1 with back channels (used by flac for instance) like 5.1 with side channels (standard for ac3).
Serbian language added (thanks to Rancher).
Languages updated: Basque (thanks to Xabier Aramendi), Chineese (thanks to PoYang).
Bug fixed: some languages was reset to english after restart.
Installer: /noicons option works now

View full changelog

All features


* Watch movies with AC3 and DTS audio tracks
* Listen multi-channel (AC3/DTS) AudioCD
* Playback WAV files with AC3/DTS content, ripped from multi-channel AudioCD without any conversion of these files.
* Playback raw .AC3 and DTS files (with help of AC3File filter)


* Up-mix any audio track (even plain stereo) up to 6 channels
* Down-mix any audio track to any number of channels (to match your speaker configuration)
* If you have an external Dolby ProLogic decoder, you may use ProLogic down-mix to help DPL decoder to extract surround information
* Watch movies under poor hearing conditions (noisy environment, weak speakers, ...)
* Decrease dynamic range to watch movies at night
* Apply time shift to the audio track to synchronize audio with video.
* Adjust gain of every input/output channel independently to compensate loudness differences
* Adjust time delays for every channel to compensate different distances to loudspeakers.

SPDIF output:

* Passthrough AC3 and DTS over SPDIF without any change to external decoder
* Encode any audio to AC3 and transmit it over SPDIF
* USB sound cards supported

Sections/Browse similar tools

Guides and How to's

Acronyms / Also Known As

ac3filter, ac3 filter, ac3filter tools, ac3 filter tools

Share software

Facebook    Twitter    Reddit    LinkedIn    Pinterest    Google+    Email

Notify me when software updated or report software

Email me when it has been updated    Report this software (dead link/new version)  

7 reviews, Showing 1 to 5 reviews

The filter merit choices are broken (for me) in version 2.3a, so I've had to go back to version 2.2a.

Review by mike20021969 on May 31, 2012 Version: 2.2a OS: WinXP Ease of use: 5/10 Functionality: 5/10 Value for money: 10/10 Overall: 7/10

with this update the filter no decompress ac3 audio in virtualdub or virtualdub mod.

Review by LUCHOO on Apr 26, 2012 Version: 2.1a OS: WinXP Ease of use: 5/10 Functionality: 5/10 Value for money: 5/10 Overall: 5/10

Tuesday, 17 April 2012

What a class release, What a perfection! - perfect 7.1 (8) channels surround sound decoder, and it's FREE plus Open Source!
I LuV this Developer.

Recently I was fixing my buddy's Windows system and came to know about features in this latest release. We literally started dancing when we blasted 8 channel video.

I would like to consider this release either as a Mile Stone or a Hammer Blow b'coz "The World" of Encoders and Rippers is yet not ready for 7.1 channels
Surround Sound. I am still fumbling for audio and video sync even in tuking two channels stereo. Here this decoder is 8 channels ready. Grrrrrrr!

However few things about this release...
1) Sensitivity of LFE channel in Mixer Level Bar indicator seems little bit higher than other channels, or it may be my buddy's system residual noise.
2) It would be great if Mixer Input and Output indicator Bars are provided a separate tab (page) with half-half, so sensitivity and size of bars can be higher. At present tabs are Mixer, Gain, but Mixer, Level, Gain would be better, I guess.

We already started enjoying this decoder up to maximum capacity.
Bunch of Thanks!

Review by Bonie81 on Apr 17, 2012 Version: 2.1a OS: Other Ease of use: 10/10 Functionality: 10/10 Value for money: 10/10 Overall: 10/10

It requires 5.1 channel sound card to play 5.1 (6ch) surround sound.
Otherwise set media players in stereo (2ch downmix) mode.

If any one wanna test correct hook-up of surround sound speakers. Download following DD5.1 AC3 Test file
download link :
(I can appreciate if above file can be hosted on VideoHelp itself in a section.)

Review by Bonie81 on Apr 11, 2012 Version: 2.1a OS: Other Ease of use: 10/10 Functionality: 10/10 Value for money: 10/10 Overall: 10/10

I had this problem of volume way too low on my DVD playback. Finally, found the cure ! I'll make sure the word gets out !

PS Only problem is with the loads of functionnality that you can adjust for people who do not know much about it ;)

Review by jackeric on Nov 5, 2006 Version: 1.1 OS: WinXP Ease of use: 4/10 Functionality: 10/10 Value for money: 10/10 Overall: 10/10

7 reviews, Showing 1 to 5 reviews

1 tool hits, Showing 1 to 1 tools

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 = Windows version available.
Mac OS = Mac OS version available.
Linux = Linux version available.
Our hosted tools are virus and malware scanned with several antivirus programs using

Rating from 0-10.

Browse software by sections

Search   Contact us   Privacy Policy   About   Advertise   Forum   RSS Feeds   Statistics   Software   

Site layout: Default Classic Blue

9 Affiliates: