RM to 3G2 Converter
Processing entirely on your device — large files may take a moment.
RM (RealMedia) powered the streaming-web era of the late 90s — countless archived webcasts and lectures are stored as RealAudio/RealVideo streams. Converting 3G2 to MP4 rescues old phone videos for modern screens.
Because the whole conversion happens on your device, it is instant, unlimited and genuinely private — no accounts, no watermarks, no files on anyone's server. Multiple files are converted in one go.
How RM compares to 3G2
| RM | 3G2 | |
|---|---|---|
| Compatibility | ffmpeg, VLC, MPV | Legacy CDMA phones |
| Best for | Rescuing archived web video | Old mobile clips |
How to convert RM to 3G2
- 1
Select your files
Drag & drop your RM files onto the area above, or click to browse. You can add multiple files at once for batch conversion.
- 2
Convert instantly
Click "Convert to 3G2". The conversion runs entirely inside your browser using WebAssembly — no upload, no queue, no waiting.
- 3
Download results
Download each converted 3G2 file individually, or grab everything at once as a ZIP archive.
About the RM format
RealMedia was the streaming web of 1998-2003: RealServer dialing 28.8k modems delivered real-time video through SureStream adaptive bitrate — a decade before HLS. Countless archived lectures, webcasts and early fan content live in .rm files, playable for years only inside RealPlayer.
ffmpeg decodes the RealVideo 1.0/2.0 and Cook audio codecs inside, so archived streams convert to MP4 — the only realistic way to keep that content watchable today.
+ Strengths
- ✓Historic streaming-web archive format
- ✓SureStream adaptive bitrate was ahead of its time
- ✓ffmpeg decodes the common variants
! Limitations
- −Low resolutions by modern standards
- −Newer RV40 streams may not decode
- −RealPlayer itself is discontinued
About the 3G2 format
3G2 is the 3GPP2 variant of the mobile video format family, born on CDMA networks (Verizon, KDDI) where 3GP ruled GSM sides. Structurally it is a cousin of MP4 carrying H.263 or H.264 baseline video with QCELP/EVRC or AMR audio.
It shares 3GP's fate: low-resolution clips trapped on old phones. Conversion to MP4 is lossless in spirit — the pixels simply move into a container every modern device accepts.
+ Strengths
- ✓Tiny files for its era
- ✓Structurally close to MP4 — clean conversions
! Limitations
- −Low resolution and quality ceiling
- −Obsolete outside old CDMA phones
Why convert RM to 3G2?
There is a concrete reason this conversion exists: Low resolutions by modern standards 3G2 sidesteps that — Tiny files for its era If that is your situation, the tool above settles it in seconds, entirely on your device.
Frequently asked questions
Is this RM to 3G2 converter really free?
Yes — completely free, with no sign-up, no watermark and no daily conversion limits. The site is supported by advertising.
Are my files uploaded to a server?
No. The conversion runs entirely inside your browser using WebAssembly, so your files never leave your device — that is what makes it instant and private.
Does it work on Windows, Mac, iPhone and Android?
Yes. Anything with a modern browser works: Windows, macOS, Linux, Android and iOS. No software installation is required.
Is there a file size limit for RM to 3G2?
The only limit is your device's memory, since nothing is uploaded. Files up to a few hundred megabytes work fine on a modern desktop browser; very large files simply take a little longer.
Why is video conversion slower than image conversion?
Every frame has to be decoded and re-encoded. This site runs that work on your own CPU via WebAssembly — nothing is uploaded, but a multi-minute video reasonably takes a few minutes. Images, by comparison, are single-frame jobs.
Will the audio track be kept?
Yes. The audio is carried over and re-encoded to the standard audio codec of 3G2, staying in sync with the video. If your RM file has multiple audio tracks, the first one is used.