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Supports: M2TS
M2TS is the transport-stream container AVCHD camcorders and Blu-ray discs record to — H.264 video wrapped in BDAV framing, usually 1920×1080, 1440×1080 or 1280×720. An ICO is a Windows icon file, and its directory entry stores each image's width and height in a single byte, with 0 standing in for 256 — so 256×256 is the largest size an icon can declare. This tutorial covers the two decisions that decide whether your result is a usable icon: which frame you capture, and which size preset you pick. The second one has a trap, because the preset list on this page sets height, not a square box.
.m2ts (or .mts) clip onto the page, or click "+ Add Files". Several clips can be queued and converted with the same settings..ico file. No sign-up, no watermark.Most icon converters take a square image and fit it into a square icon. This page starts from a video frame, so there is nothing square about the input, and the preset you pick is applied to the height while the width scales to keep the original aspect ratio. On 16:9 footage that means the width is always about 1.78× the number in the preset — which overshoots 256 pixels three presets before you reach the 256P entry.
| Preset | 1920×1080 (16:9) source | 1440×1080 (anamorphic) source | Inside the 256 px icon ceiling? |
|---|---|---|---|
| 256P | ≈455×256 | ≈341×256 | No — too wide to declare |
| 192P | ≈341×192 | ≈256×192 | No (16:9) / borderline (4:3 storage) |
| 180P | ≈320×180 | ≈240×180 | No (16:9) / yes (4:3 storage) |
| 128P | ≈228×128 | ≈171×128 | Yes |
| 64P | ≈114×64 | ≈85×64 | Yes |
| 48P | ≈85×48 | ≈64×48 | Yes |
| 32P | ≈57×32 | ≈43×32 | Yes |
| 16P | ≈28×16 | ≈21×16 | Yes |
Two practical rules fall out of that table. First, treat 128P as the maximum useful preset for landscape video — anything larger produces an image wider than an icon directory can describe. Second, if you need a true square icon at a standard size such as 16×16, 32×32, 48×48 or 256×256, don't try to force it here: export the frame as a full-size still with M2TS to PNG, crop it square in any image editor, then run PNG to ICO. That two-step route is the only way to control both dimensions.
One more thing worth knowing about anamorphic AVCHD: 1440×1080 recordings store non-square pixels and rely on the player to stretch them to 16:9 on screen. This converter does not correct pixel aspect, so a still pulled from that kind of source comes out at its stored 4:3 proportions and looks horizontally squeezed. If that matters, set the shape yourself in an editor after export rather than expecting the icon to be re-stretched.
| Property | What you get here |
|---|---|
| Maximum declarable size | 256×256 (a directory-entry byte of 0 means 256) |
| Sizes Windows commonly uses | 16×16, 32×32, 48×48, 256×256 |
| Images per file | One, at the preset you chose — not a multi-size icon bundle |
| Animation | None. ICO is a still format; the video's motion and audio are dropped |
| Transparency | None from a video source — AVCHD frames are fully opaque |
| Colour | Full colour from the decoded frame; there is no palette control on this page |
| Source of the pixels | A single decoded frame at the timestamp you set |
.ico in a dedicated icon editor.Two categories of M2TS file will not give you an icon. The first is anything copy-protected: commercial Blu-ray discs are encrypted with AACS, sometimes with BD+ on top, and an encrypted stream cannot be decoded by a conversion tool. The second is a damaged capture — pulling a card out of a camcorder before it finishes writing leaves a clip with a broken stream index that may scrub in a player but fail to seek cleanly to your timestamp. If seeking fails, try time 0, or convert the clip to a normal video first with M2TS to MP4 and grab the frame from that. And if what you actually want is a picture rather than a Windows icon, skip the 256-pixel ceiling entirely with M2TS to JPG or M2TS to PNG.
In practice, 128P — about 228×128 pixels. The presets set height only, so 256P on a 16:9 frame produces roughly 455×256, and 455 pixels is wider than an icon directory entry can describe. If you want the full 256×256, crop the exported still to a square first and convert that image to ICO.
Frame Selection opens on Specific Frame with Time (seconds) set to 0, so the default output is the very first frame of the clip. Type any number of seconds into that box to seek elsewhere in the video, or switch to Multiple Screenshots and pick a Capture Rate — anything from ten frames a second down to one frame every ten seconds — to get a spread of candidate frames in a single run.
Because the frame was. The converter keeps your source aspect ratio and scales to the preset height, so a 16:9 video always yields a wide icon. Nothing here crops or pads it to a square — that is a deliberate choice so the still isn't distorted, but it means square icons have to be cropped before conversion.
No. ICO is a still image container: it can hold several sizes of the same picture, but there is no animation track and no audio. If you want a short animated loop from the same footage, convert the clip with M2TS to GIF instead.
No. AVCHD video frames are fully opaque — the format has no alpha channel — so every pixel of the extracted frame is solid and the icon is a filled rectangle. To get a transparent icon you would have to mask the subject in an image editor first and then convert that masked PNG.
Our pipeline decodes the frame you selected to a lossless PNG and then writes the icon from that PNG, so no extra lossy generation is added on our side. The only compression already present is the H.264 compression that was baked into the source clip when the camcorder recorded it.
Yes. .mts is the 8.3-style name AVCHD camcorders write on the memory card and .m2ts is the name the same stream carries once it is imported or read from a disc. Both upload here, and MTS to ICO is the identically configured page if your files still carry the camcorder extension.
It is uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours along with the icon it produced — no sign-up, no watermark, never shared or made public. Because M2TS carries full HD video, the practical limit is upload size and time: a long recording takes a while to send even though the icon that comes back is a few kilobytes.