ICO to 3G2 Converter

Convert ICO files to 3G2 format online. Free, fast, no watermarks.

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Supports: ICO

OptionsAdvanced Options - Our defaults are optimized for the best results. We recommend you keeping the defaults unless you have a specific need.
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Merge strategy
Select Merge images to combine all uploaded files into a single video. Use Video per image to create a separate video for each individual file.
Image Duration
Duration
This is amount to time a single image is displayed on the output video. Only applied to images that are not GIF.
Background Color
Background Color
File Compression
Preset
Video resolution

ICO to 3G2 Converter

ICO is a Windows icon image — a small, square still picture (16x16 up to 256x256 pixels) used for app icons and browser favicons. 3G2 is the 3GPP2 mobile video container built for old CDMA-network phones. This converter is a still-to-video operation: it takes the single icon and wraps it in a short, silent 3G2 clip that displays that one frame for a set duration. It is a niche, legacy conversion — useful if you specifically need a 3G2 file, but for most goals ICO to PNG (to keep it an image) or ICO to MP4 (for a modern clip) makes more sense.

ICO Format at a Glance

Property Value
Full name Icon File (Windows icon)
Developer Microsoft
Type Still raster image
Typical sizes 16x16, 32x32, 48x48, up to 256x256 px
Multi-image Yes — one file can hold several sizes
Transparency Yes — 1-bit mask or 8-bit alpha channel
Best for App icons, favicons (favicon.ico), Windows shortcuts

3G2 Format at a Glance

Property Value
Full name 3GPP2 multimedia container
Standard Based on ISO/IEC 14496-12 (MPEG-4 Part 12 / ISO BMFF)
Defined by 3GPP2, for CDMA2000 3G networks
Video codecs H.263, MPEG-4 Part 2, H.264
Audio codecs AMR-NB / AMR-WB, AAC (none used here — output is silent)
Built for Low-resolution, low-bitrate playback on early CDMA phones
Status Legacy — US CDMA networks shut down (Verizon ended Dec 31, 2022)

How to Convert ICO to 3G2

  1. Upload Your ICO File: Drag and drop your icon onto the page or click "+ Add Files" to choose it from your computer.
  2. Set the Duration: Use the Duration control to choose how many seconds the static icon plays — the default is 5 seconds per frame, and you can shorten or lengthen the clip.
  3. Pick Resolution and Background: Under Video resolution, keep the original size or choose a fixed/preset resolution; the small icon is scaled up to fill the frame, and the Background Color dropdown (default Black) fills any letterboxed area around it.
  4. Convert and Download: Click "Convert" to encode the silent 3G2 clip and download it. Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours — no sign-up, no watermark.

Frequently Asked Questions

Will the 3G2 file have any sound?

No. The source is a single still image with no audio track, so the output is a silent video. The 3G2 container can carry AMR or AAC audio, but there is nothing to encode here — the clip just shows your icon for the chosen duration.

Why does my icon look blocky in the 3G2 video?

ICO images are tiny — often 32x32 or 256x256 pixels at most. When that small picture is scaled up to fill a video frame, the pixels are stretched, which makes edges look soft or blocky. Starting from the largest size stored in the ICO, keeping the resolution modest, and not upscaling aggressively all help reduce the effect.

Is 3G2 still a useful format in 2026?

Rarely. 3G2 was designed for CDMA2000 phones, and the US CDMA networks that carried it have been retired — Verizon shut off its 3G CDMA network on December 31, 2022. Most modern phones and players no longer prioritize 3G2. If you want a clip that plays everywhere today, convert your icon to MP4 instead with our ICO to MP4 converter.

What plays a 3G2 file once I have it?

VLC media player opens 3G2 on Windows, macOS, Linux, and mobile without extra codecs. QuickTime handles many 3G2 files on macOS, and Windows Media Player supports the common codecs. On Android, VLC or MX Player are reliable choices.

I just want to keep my icon as an image — what should I use instead?

If you do not actually need a video, do not convert to 3G2. Use our ICO to PNG converter to get a standard, transparency-friendly image that opens in any editor or browser. 3G2 only makes sense when the target genuinely requires that legacy mobile video container.

How long does conversion take, and is my file kept?

In our testing, a single 256x256 ICO encoded to a 5-second 3G2 clip finishes in a few seconds. Your upload travels over an encrypted connection, is processed on our servers, and is deleted automatically after a few hours — we never share or publish your files, and there is no sign-up or watermark.

Can I make the clip longer or shorter than 5 seconds?

Yes. The default duration is 5 seconds, but the Duration control lets you set a shorter or longer single-frame run time before encoding. Because the same still repeats for the whole clip, a longer duration only changes playback length, not the image quality.

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