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Supports: ICO
ICO is the Windows icon container — the format behind a favicon or an app icon, holding one or more small images (256×256 pixels at most) in a single file — and AVI is Microsoft's Audio Video Interleave container, the RIFF-based video format that defined desktop video on Windows from 1992 onward. Turning an icon into an AVI is a narrow, slightly unusual job: you get one motionless frame, held on screen for a set time, with no audio. This tutorial walks through the conversion, sets two expectations honestly up front (an icon is tiny, and the result is a single silent frame, not a clip), and points you to the conversions most people who land here actually want.
.ico onto the page or click "+ Add Files" to browse from your computer. You can queue several icons at once.Three things about this pairing surprise people, and all three are worth understanding before you convert:
A couple of patterns cover most real needs:
Because a motionless frame barely changes between samples, MPEG-4 compresses it heavily, so an icon held for a few seconds produces a very small AVI.
For almost everyone, AVI is the wrong target for an icon. If you only want a viewable, editable picture of the icon, convert to an image with ICO to PNG — it keeps transparency and stays lossless — or ICO to JPG if you want a flat image on a solid background. If you genuinely need a video clip (a logo placeholder, a test pattern, a stinger), the modern default is ICO to MP4: MP4 plays natively in browsers, on phones, and on smart TVs, where AVI does not. Pick AVI only when a specific older tool or device — a pre-2012 non-linear editor, a DivX/Xvid set-top box, or a Windows-only workflow that lists AVI as its accepted format — actually requires that container. There is no way to recover resolution an icon never had; if you started from a small favicon and need a large, sharp video, go back to the original full-size artwork rather than the icon.
The converter uses the largest image stored in the icon, since that frame carries the most detail. A favicon often bundles 16×16, 32×32, and 48×48 versions (and sometimes 256×256); picking the biggest gives the sharpest possible video frame. It is still icon-sized, though — even a 256×256 frame is small next to a normal video resolution, so the result sits on a background-color field or is upscaled with the usual softening.
No. The conversion takes one icon and displays it as a static image for the duration you set. There is no panning, zoom, or animation, and the output carries no audio track — it is a silent, single-frame still rendered into an AVI. If you upload several icons and choose "Merge images," they play back to back, but each frame is a static image shown for its set duration, with no transitions between them.
MPEG-4. AVI is a container that can hold many codecs, and this converter defaults to MPEG-4 (MPEG-4 Part 2, the codec classic Windows software and DivX/Xvid-aware players decode without complaint) — under "Show All Options" you will find the "Video Codec" set to it, with Xvid, DivX, MJPEG, and others available if a specific player needs them. Because the source is a still icon, no audio track is written.
Usually you wouldn't. AVI made sense for older Windows tools and DivX/Xvid hardware, but it has no native browser or phone support and its codecs are larger than modern ones. Choose AVI only when a specific destination — a pre-2012 non-linear editor, a DivX-certified set-top box, or a Windows-only workflow — lists AVI as its accepted format. If the destination accepts MP4, ICO to MP4 plays in far more places and produces a smaller file.
Yes, and that is what most people who reach this page actually want. ICO to PNG pulls the icon out as a standard, lossless image with transparency intact, and ICO to JPG flattens it onto a solid background. Both are far smaller than any video and open in every image editor and browser — no video container needed.
In our testing, a single favicon held for 5 seconds at the "Very High" preset produced an AVI only a few hundred kilobytes in size, because a motionless MPEG-4 frame compresses heavily. Your file is uploaded over an encrypted connection, rendered and packaged into AVI on our servers, and deleted automatically a few hours after conversion — no sign-up, no watermark, never shared or made public. The main practical limit is upload size and time, not your device.