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Supports: WEBM
WebM is a video container — a stream of VP8 / VP9 / AV1 frames that browsers decode for inline playback. ICO is the opposite: a single still (or a bundle of stills at multiple sizes) that Windows reads to draw a desktop icon, taskbar pin, Alt-Tab thumbnail, or browser tab favicon. Going from WebM to ICO almost always means picking ONE meaningful frame from a clip and re-encoding it at a small fixed size. Common reasons people pull an ICO from a WebM:
<link rel="icon">..ico file. Grab a frame from a screen recording or product walkthrough WebM and use it as a folder icon for that project's working directory..exe resources still take ICO with embedded 16, 32, 48, 64, 128, and 256 px sizes. A WebM logo reveal makes a useful source for the highest-resolution frame in that bundle..exe or installer — Tools like Resource Hacker and rcedit accept ICO; the source WebM gives you an animated brand asset to mine the best frame from.If you want a multi-size favicon bundle (16, 32, 48 in one ICO) or higher-fidelity output, convert through WebM to PNG first to keep the source frame lossless, then build the ICO. For a single still without the icon constraints, WebM to JPG is the smaller path.
| Property | WebM | ICO |
|---|---|---|
| Type | Video container (animated) | Image container (still) |
| Codec / encoding | VP8, VP9, AV1 | BMP or PNG image data |
| Frames | Hundreds to thousands | 1 still per size |
| Typical resolution | 1920×1080, 1280×720, 854×480 | 16, 32, 48, 64, 128, 256 px square |
| Color depth | 24-bit (8-bit alpha optional) | 1-bit, 8-bit, or 24/32-bit |
| Transparency | VP9 with alpha; not all encoders | 1-bit (mask) or full 8-bit alpha |
| Plays in browser | Yes (HTML5 <video>) |
Rendered as favicon, not played |
| Where Windows uses it | Edge / Chrome video element | Taskbar, desktop, Explorer, tray, Alt-Tab |
| File size for short clip | 200 KB – 5 MB | 1 – 200 KB per icon |
| Size | Where Windows uses it | Notes |
|---|---|---|
| 16×16 | Browser favicon, Explorer list view, app title bar | Anti-alias and simplify; fine detail disappears |
| 24×24 | Toolbar buttons, tray icons (some DPI scales) | Often paired with 32 in a single ICO |
| 32×32 | Desktop (small icons), taskbar pinned apps | The default Windows icon size for decades |
| 48×48 | Desktop (medium icons), Open With dialog | Favicon spec also includes 48 |
| 64×64 | Desktop (large icons), Start Menu tile foreground | Useful step between 48 and 128 |
| 128×128 | Desktop (extra-large icons), HiDPI taskbar | Sharp on 1.5× / 2× display scaling |
| 256×256 | File Explorer "Extra large" view, installers | The maximum ICO size; Vista-era introduction |
A typical Windows ICO bundle ships at 16, 32, 48, and 256. Favicons usually only need 32×32 (or 16/32/48 combined). Pick the size that matches where you'll actually use the icon.
Use Specific Frame with Time in seconds — for example, 2.5 grabs the frame 2.5 seconds in. For an animated logo reveal, the final settled frame (often the last second) gives the cleanest icon. If you don't know exactly when the right frame appears, switch to Multiple Screenshots at 0.5s or 1s capture rate, get a sequence, then re-run the conversion with the exact timestamp once you've spotted the keeper.
The icon-sized resolution presets are 256p, 192p, 180p, 128p, 64p, 48p, 32p, 24p, and 16p — matching the sizes Windows actually uses for desktop, taskbar, tray, Explorer, and favicons. The full-frame video presets (1080p, 4K, 8K) are hidden for ICO because Windows won't render anything above 256 px in icon contexts.
ICO supports a 1-bit mask and, in modern PNG-encoded ICOs, full 8-bit alpha. WebM source frames are usually opaque (most VP8/VP9 streams don't carry alpha). If your source is a VP9 video with alpha, the transparency comes through; if it isn't, the icon will be a solid rectangle. To layer an icon over a folder or transparent background, mask the frame in PNG first, then convert that PNG to ICO.
Detail that fits comfortably at 1920×1080 turns into mush at 16×16. A 1080p logo with a thin tagline downscales to a smear. For tiny sizes, capture the WebM frame at 256 px first (using the 256p preset) so the encoder has clean source pixels, and design the source so the icon shape reads at 16 px — bold silhouette, no fine text, high contrast against the background.
Yes — if it's a valid WebM container with VP8, VP9, or AV1 video inside, the frame extractor decodes it. OBS Studio's WebM output, Chrome's tab-capture WebM, ScreenToGif's WebM export, and the WebM files Twitter / Discord serve all work. The extractor reads the source video stream directly, so the resulting ICO matches the original pixels (no re-screenshot of a player window).
Quality preset controls how aggressively the encoder optimizes the icon's image data — Very High is the recommended default and keeps the icon sharp at every Windows display scale. Image bit depth controls the color count: 1-bit gives a monochrome silhouette icon (smallest file, retro aesthetic), 8-bit gives 256 indexed colors (good for flat-color logos), and full color preserves photographic detail. For most modern app icons, leave bit depth at default and use 256-color or higher.
Yes. Drop in multiple WebM files and each one extracts its own ICO with the same frame selection settings — handy for a project where every clip's final frame becomes the icon for a corresponding folder or shortcut. Output downloads individually or as a ZIP archive.
Generate the highest-resolution ICO first (256p) from the WebM frame, then run additional conversions at 48p, 32p, and 16p. Bundle them in a tool that supports multi-image ICO (icofx, IcoFX, or magick convert with multiple input PNGs). For straight favicon use a single 32×32 ICO is enough — most modern browsers also accept the source PNG via <link rel="icon" type="image/png">.