Free online ICO to MKV converter

Turn an ICO icon into a timed still-image MKV clip using an online converter or desktop tools.

Convert ICO to MKV online - free

.ico .mkv

Drop up to 3 .ICO files here or click to browse

Max 10 MB per file · No registration required · max 30 MB total

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How it works

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Upload your .ico file

Click to browse to select your file you want to convert or simply drag & drop your file into selected area.
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Perform .ico to .mkv conversion

After successful file upload, click to convert when you are ready.
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How to convert ico to mkv file

November 15, 2026
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Some video players and editing workflows accept MKV clips but not ICO icons. Converting an icon creates a still-image video whose display time can be set for playback or editing.

What the ICO format is

ICO is a Windows icon format used for application icons and, in some contexts, website favicons. Icon editors and Windows development tools create ICO files; one file can contain several image sizes or color variants.

What the MKV format is

MKV, or Matroska, is a multimedia container that can hold video, audio, subtitles, and metadata. It is useful for storing and editing video, but the video codec inside the container determines playback compatibility. An ICO has no motion or soundtrack, so conversion produces a static picture displayed for a chosen duration.

How to convert ICO to MKV

Online on 101convert.com

Upload the ICO file on the converter page. You can add several files for batch conversion; each file is subject to the size limit shown there.
Set show each picture for to choose how long each image appears.
Start the conversion, then download the resulting MKV file.

Offline with desktop software

ImageMagick and FFmpeg are free, open-source command-line tools available for Windows, macOS, and Linux. Use ImageMagick to select an ICO image and save it as PNG, then FFmpeg to encode that still image as an MKV video.

Save the first image in the icon file as PNG: magick "icon.ico[0]" icon.png. If the ICO contains multiple sizes, inspect or select the variant you need; the first image may not be the largest.
Create a five-second video: ffmpeg -loop 1 -framerate 25 -i icon.png -t 5 -vf "pad=ceil(iw/2)*2:ceil(ih/2)*2" -c:v libx264 -pix_fmt yuv420p output.mkv. Change -t 5 to the required duration.

Quality and compatibility

The result is a static clip, not an animated icon. Small ICO variants can look pixelated when enlarged. The example encodes H.264 video and discards transparency because yuv420p has no alpha channel; composite transparent areas onto a background color before encoding if their appearance matters.

Note: This ico to mkv conversion record is incomplete, must be verified, and may contain inaccuracies. Please vote below whether you found this information helpful or not.

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ICO vs MKV: format comparison

How the ICO and MKV formats compare on the properties that matter most for this conversion.

Comparison of the ICO and MKV file formats
Property	.ICO Icon Image File	.MKV Matroska Video
Open standard	Partly open	Yes
Compression	Both	Both
Typical file size	Very small	Large
Opens in a web browser	Yes, natively	No
Further editing	Limited	Limited
Metadata support	Basic	Extensive
Plain-text readable	No	No
Best used for	Icons	Streaming
Introduced	—	2002
Developer	Microsoft Corporation	Matroska org
MIME type	image/x-icon	video/x-matroska

Open ICO file Open MKV file

Information about file extensions and file types is provided by File-Extensions.org

Frequently asked questions

Is the ICO to MKV converter free?

Yes, converting ICO to MKV on 101convert.com is completely free. No registration, email address or installation is required. If you need a higher file size limit or want to convert more files at once, see our plans.

How large can my ICO file be?

You can upload ICO files up to 10 MB and convert up to 3 files at once in a single batch. With a paid plan the limit is up to 2000 MB per file and 20 files at once, see our plans.

What happens to my uploaded files?

Files are processed automatically and deleted from our servers within a few minutes after conversion. We never view or share your files.

Do I need to install any software to convert ICO to MKV?

No. The ICO to MKV conversion runs entirely online in your browser and works on Windows, Mac, Linux, Android and iPhone.

Did the conversion fail?

In most cases, the cause is an incorrect file format. Please upload a valid ICO file for this ICO to MKV conversion. Occasionally, the issue may be on our side. We analyze recurring conversion failures and disable or fix the converter if we detect a defect.

ico to kmz ico to mov

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ico file conversion

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