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This is an unusual conversion, so it helps to know what you're making before you start. An ICO is a Windows icon container — a tiny still raster image (16×16 up to 256×256 pixels), not a moving picture. AV1 (AOMedia Video 1) is a modern, royalty-free video codec, published by the Alliance for Open Media in 2018, and here it's wrapped in an MP4-style container. Converting ICO to AV1 takes one static icon and encodes it as a short, silent AV1 video clip that holds the same picture for a set number of seconds. This guide covers the upload, the duration and resolution settings that matter, the rough edges to expect (blockiness, no audio, slow encoding), and the very common mix-up between AV1 video and the AVIF image format.
The single biggest issue with ICO to AV1 is scale. A favicon-sized 32×32 icon is roughly a thousandth of the pixel count of a 1080p frame, so blowing it up to fill a video frame produces a soft, blocky picture — there is no extra detail to invent. A few patterns help:
If your goal is simply to view, share, or store the icon, AV1 video is the wrong target — keep the icon as an ICO or export it as a PNG, both of which preserve the picture losslessly and stay tiny. A very common mix-up: people who search for "ICO to AV1" often want AVIF, the AV1 image format, which is one AV1-encoded frame saved as a picture with alpha transparency and far smaller files than PNG — for that, use ICO to AVIF instead. ICO to AV1 video only makes sense when you specifically need a video file: a placeholder clip on an editing timeline, a logo bumper, or a stand-in frame in a modern, codec-conscious pipeline. If you need the broadest device compatibility for a video, ICO to MP4 with H.264 plays almost everywhere; AV1 is the right pick only when small file size at high quality matters more than reaching every old player.
Quite possibly. AVIF (AV1 Image File Format) is a still image built on the AV1 codec — essentially one AV1 frame saved as a picture, with alpha transparency and files around 50% smaller than JPEG. AV1, by contrast, is a video codec, so converting ICO to AV1 produces a short silent video clip, not an image. If you wanted a smaller, sharper version of the icon you can place on a web page, use ICO to AVIF. If you genuinely need a video file, ICO to AV1 is correct.
Because an icon has no sound. ICO to AV1 is a still-image-to-video conversion: it renders one picture as video frames with no audio source to draw from, so the output is silent by design. If you need audio, open the resulting clip in a video editor such as Shotcut or DaVinci Resolve and add a music or voiceover track there.
It can, if the icon is small and you scale the video up. An icon is at most 256×256 pixels, so stretching it to a 1080p frame magnifies every pixel — there's no extra detail to add. For the sharpest result, use an ICO that includes a 256×256 layer and keep the output resolution close to the icon's native size, letting the Background Color fill the rest of the frame.
No. The AV1 video output here has no alpha channel, so any transparent pixels in the ICO are filled with the Background Color (Black by default). If your icon was designed on transparency, set the Background Color to White or your brand color so the icon doesn't sit on an unexpected black square. To keep transparency, convert to ICO to AVIF or PNG instead, both of which support an alpha channel.
Not every device. AV1 decoding is supported in Chrome 70+, Firefox 67+, and current Edge, but on older hardware it falls back to slower software decoding. Smooth hardware-accelerated playback needs a recent GPU — NVIDIA RTX 30-series or newer, recent AMD and Intel graphics — or an Apple silicon Mac with an M3 or later chip. If broad compatibility matters more than file size, use ICO to MP4 (H.264), which plays almost everywhere.
AV1 is a computationally heavy codec; its encoder does far more work per frame than H.264 or VP9 to reach its higher compression. Even a single-icon clip takes longer to encode than the same clip in an older codec. The trade-off is worth it when small file size matters: AV1 is roughly 50% more efficient than H.264 and about 25% more efficient than VP9 at the same quality. In our testing, a 256×256 icon held for 5 seconds encoded to an AV1 clip of well under a megabyte — far smaller than the equivalent MPEG output, though larger than the original ICO.