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Icaros can provide Windows Explorer thumbnails, for essentially any video media format supported by FFmpeg, this includes popular filetypes such as: Mkv, Flv, Avi, Mp4, Mov, Rmvb, M2ts, Ogm etc. Besides the FFmpeg supported filetypes, Icaros also contains custom parsers, which can produce Cover Art thumbnails for Mkv, Flac, Ape, and Mpc files. Icaros also provides Windows Explorer properties for the following popular filetypes: Mkv, Flv, Ogm, Ogv, Ogg, Flac, Ape, and Mpc. Requires .NET 4.0.

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Icaros screenshot

Icaros screenshot 2
Latest version

3.2.1 / 3.3.0 RC1 (October 21, 2022)


Visit developer's site

Download Icaros 3.2.1  10MB  Win

Download Beta, Portable and other versions

Download Icaros 3.2.1 Portable  9MB  Win  Portable

Download Icaros 3.3.0 RC1  11MB  Win

Download Icaros 3.3.0 RC1 Portable  10MB  Win  Portable

Download old versions

Download Icaros old versions

Software License

Freeware (Free download and usage!)

Supported operating systems


Version history / Release notes / Changelog / What's New

[Icaros v.3.3.0 RC 1]

v.3.3.0 rc1
- Implemented a way for Icaros to recover slightly corrupted cache files
- Improved how IcarosConfig handles permission issues for the Icaros Cache
- Added support for thumbnailing AVIF with alpha channels
- Fixed a lot of small Cache issues
- Fixed Cache Indexer returning an 0x14 error when parsing long filenames
- Fixed a couple of rare issues that affected thumbnailing of some files
- Added a workaround for an issue that prevented the Icaros Thumbnail Provider from working on Vista
- Installer is now localized (Thank you bovirus for the implementation!)
- Installer has been updated with a slightly more modern look
- Added Romanian localization (Thank you Cătălin Popescu! ^__^)
- Updated Italian localization (Thank you bovirus! ^__^)
- IcarosConfig now uses %SystemRoot% instead of the hardcoded C:Windows path when referencing the WOW64 regsvr32.exe
- Updated LibDav1d to 1.0.0
- Updated GCC
- Updated FFmpeg

[Icaros v.3.3.0 Beta 3]

- Added AIF/AIFF/AIFC property support
- Made the [Und] track language tag optional, and hidden by default
- Fixed and improved the WAV property and tag parser
- Fixed properties of several different types of MP4/MOV files
- Fixed hang when generating properties for certain MP4 files
- Fixed OGA, WEBMA, WEBMV not showing thier properties in File Explorer
- Fixed thumbnailing of certain PAL8 files
- Fixed crash if the current Icaros Cache Location had suddenly gotten
restrictive permissions applied to the folder
- IcarosConfig now performs a permission check on the current Icaros
Cache Location, when going to the Cache Page. If the check fails,
an option has been added to attempt to fix the permission issues.
- When opening IcarosConfig for the first time, the default theme will now
match the current Windows App theme
- Improved Debug Mode: Icaros should now catch far fewer crashes caused
by other software loaded in the same process as Icaros

[Icaros v.3.3.0 Beta 2]

- Upgraded all cache logic to 64bit
- Heavily improved all cache logic
- Cache no longer has a size limit where it stops working
- Added several new thumbnail cache sizes
- Fixed multiple potential cache crashes
- Fixed caching of folder thumbnails on Windows 10+
- Fixed cache indexer not using the thumbnail timestamp when enabled
- Fixed issue where cache didn't always return a valid thumbnail even though one was available
- Improved automatic thumbnail size detection for certain filetypes

[Icaros v.3.3.0 Beta 1]

- Added support for MP4 properties (incl. mov, 3gp, 3g2, mj2, psp, m4b, ism, ismv, f4v, m4a, isma)
- Added partial support for AVIF thumbnailing
- Added thumbnailing of AI files with an embedded image
- Added thumbnailing of PDF files with an embedded image
- Added OGA, WEBMV and WEBMA properties
- Improved cover selection logic of CBZ/CBR/CB7/EPUB files
- Fixed thumbnailing of Dolby Vision HEVC streams (dvhe)
- Fixed cache crash when caching very small image thumbnails
- Fixed rare Explorer hang on specific files
- Automatically undo registry block placed by other software, that prevented Icaros from working
- Disable the 'Icons Only' folder setting when enabling thumbnailing
- Register OGA as an audio filetype
- Explorer settings that have been modified by Icaros is now reverted during uninstall
- All MP4 properties is disabled by default (As the native Windows handler allows editing of properties)
- MP3 properties is now disabled by default
- Sidepanel position is now remembered in IcarosConfig
- Updated localizations (Simplified Chinese) (Thank you ZerOri!)
- Updated LibDav1d to 0.9.2
- Updated Unarr to 1.1.0 Beta
- Updated FFmpeg
- Updated VS, donations amount and copyright
- Additional minor fixes and improvements

View full changelog

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Acronyms / Also Known As

Icaros Thumbnail Provider, shark007 Icaros

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47 reviews, Showing 1 to 5 reviews

Great, finally makes windows do what it should already do by itself!
But I quickly discovered a bug: .ogg files show the wrong length (in hh:mm:ss) in file explorer.

Review by MisterSir on Sep 18, 2022 Version: 3.2.1 OS: Windows 7 64-bit Ease of use: 7/10 Functionality: 7/10 Value for money: 7/10 Overall: 7/10

Easy, fast installation. Works as advertised.

Review by on Aug 5, 2022 Version: 3.2.1 OS: Windows 10 64-bit Ease of use: 10/10 Functionality: 10/10 Value for money: 10/10 Overall: 10/10

Thank you for "Added support for MP4 properties", that was an option I had been waiting for Years....
Explorer no longer hangs when I right click an mp4 file!
It'd be great if the developer could add support for TS properties too.


Review by Lastr on Jun 30, 2022 Version: 3.3.0 Beta 3 OS: Windows 10 64-bit Ease of use: 10/10 Functionality: 10/10 Value for money: 10/10 Overall: 10/10

Unfortunately, it can not show Mp4 HEVC x265 some information (frame height and frame width) in explorer folder details. It need a way to add mp4 extension too. but still very good app.

Review by midip on Feb 16, 2022 Version: 3.2.1 OS: Windows 7 64-bit Ease of use: 10/10 Functionality: 10/10 Value for money: 10/10 Overall: 10/10

This program is usually great, but the dev hardcoded the paths for the system files so if your windows installation is using a drive letter other than C: - it doesnt work. He\She should have used a %SystemRoot%\SysWOW64\regsvr.exe env variable instead of hardcoded C:\Windows\SysWOW64\regsvr.exe

Review by New User on Jan 30, 2022 Version: 3.2.1 OS: Windows 10 Ease of use: 1/10 Functionality: 1/10 Value for money: 1/10 Overall: 1/10

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