3G2 to M4R Converter

Export the soundtrack from 3G2 videos to M4R format

Drop files here. 1 GB maximum file size or Sign Up
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Settings

Set the AAC audio bitrate per channel. For example, stereo audio with 128 kbps set here will produce a 256 kbps file. If set to "Custom", the recommended range is ≥64 kbps.
Set the number of audio channels. This setting is most useful when downmixing channels (e.g., from 5.1 to stereo).
Set the sample rate of the audio. Music with a full spectrum (20 Hz — 20 kHz) requires values not lower than 44.1 kHz to achieve transparency. More info can be found on the wiki.

3g2

3G2 (3GPP2 file format) is a multimedia container developed by the 3rd Generation Partnership Project 2 for use on CDMA2000 mobile networks. Built on the ISO base media file format (MPEG-4 Part 12), it stores video encoded with H.263 or MPEG-4 Visual alongside audio in AMR, EVRC, or AAC codecs. The specification was first published in December 2003 to provide a standardized way for CDMA-based phones and networks to handle multimedia messaging and video playback. 3G2 files are engineered for extremely low-bandwidth conditions, achieving playable video quality at bit rates as low as 30-60 kbps. This makes the format especially efficient for mobile video capture on devices with limited processing power and storage. The container supports multiple tracks, timed text for subtitles, and embedded metadata. One significant benefit is near-universal compatibility with CDMA handsets from the mid-2000s era, ensuring reliable playback across a wide range of mobile devices. Though newer formats like MP4 have superseded 3G2 for most purposes, it remains useful for working with legacy mobile content and for situations where minimal file size is the primary concern.
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m4r

M4R is the designated ringtone format for Apple iPhone devices, introduced alongside the original iPhone in 2007. Technically, an M4R file is an AAC-encoded MPEG-4 audio container identical in structure to M4A — the only meaningful differences are the file extension and a duration constraint of roughly 30-40 seconds enforced by iOS. Apple chose this approach so existing AAC encoder infrastructure could produce ringtones without codec-level modifications, while the distinct extension prevents regular music tracks from appearing in the ringtone picker and vice versa. Creating an M4R involves encoding a short audio clip as AAC, trimming it to the allowed length, and renaming the file. iTunes (or Apple Music on recent macOS) and GarageBand both provide built-in workflows, and third-party tools like Audacity handle it equally well. Once synced or downloaded, the ringtone integrates with iOS settings for calls, alarms, and per-contact alerts. Practical advantages include effortless deployment to any iPhone through iTunes sync or AirDrop, high-quality playback from the AAC codec even at small file sizes, and the ability to assign individual ringtones to specific contacts for instant caller identification.
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No Installation

The converter runs entirely in your web browser. No plugins, no apps, no downloads — just open convertio.co and start converting immediately.

Fast Processing

3G2 to M4R conversion happens on cloud servers at speed. Extract audio from video and download the M4R result in moments.

Private and Secure

Your uploads are processed on encrypted servers and deleted right after conversion. Output files are purged within 24 hours for complete privacy.

How to convert 3G2 to M4R

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose m4r or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your m4r file right afterwards

About formats

3G2 (3GPP2 file format) is a multimedia container developed by the 3rd Generation Partnership Project 2 for use on CDMA2000 mobile networks. Built on the ISO base media file format (MPEG-4 Part 12), it stores video encoded with H.263 or MPEG-4 Visual alongside audio in AMR, EVRC, or AAC codecs. The specification was first published in December 2003 to provide a standardized way for CDMA-based phones and networks to handle multimedia messaging and video playback. 3G2 files are engineered for extremely low-bandwidth conditions, achieving playable video quality at bit rates as low as 30-60 kbps. This makes the format especially efficient for mobile video capture on devices with limited processing power and storage. The container supports multiple tracks, timed text for subtitles, and embedded metadata. One significant benefit is near-universal compatibility with CDMA handsets from the mid-2000s era, ensuring reliable playback across a wide range of mobile devices. Though newer formats like MP4 have superseded 3G2 for most purposes, it remains useful for working with legacy mobile content and for situations where minimal file size is the primary concern.
Initial release: December 2003
M4R is the designated ringtone format for Apple iPhone devices, introduced alongside the original iPhone in 2007. Technically, an M4R file is an AAC-encoded MPEG-4 audio container identical in structure to M4A — the only meaningful differences are the file extension and a duration constraint of roughly 30-40 seconds enforced by iOS. Apple chose this approach so existing AAC encoder infrastructure could produce ringtones without codec-level modifications, while the distinct extension prevents regular music tracks from appearing in the ringtone picker and vice versa. Creating an M4R involves encoding a short audio clip as AAC, trimming it to the allowed length, and renaming the file. iTunes (or Apple Music on recent macOS) and GarageBand both provide built-in workflows, and third-party tools like Audacity handle it equally well. Once synced or downloaded, the ringtone integrates with iOS settings for calls, alarms, and per-contact alerts. Practical advantages include effortless deployment to any iPhone through iTunes sync or AirDrop, high-quality playback from the AAC codec even at small file sizes, and the ability to assign individual ringtones to specific contacts for instant caller identification.
Developer: Apple Inc.
Initial release: June 29, 2007

Frequently Asked Questions

Why should I convert 3G2 to M4R?

Want a custom iPhone ringtone from 3G2? M4R is what iOS requires — convert and sync through iTunes to set it as your ringtone.

What software plays M4R?

Open M4R using iTunes for syncing to iPhone, or directly on iOS devices as custom ringtones.

Is the conversion private and secure?

We take privacy seriously — uploaded 3G2 files are erased once converted, and M4R outputs are automatically deleted within 24 hours.

Can I convert 3G2 to M4R on my phone?

The tool works on smartphones and tablets. Open convertio.co in your mobile browser, upload the 3G2, choose M4R, and download when done.

How long does 3G2 to M4R conversion take?

Processing time depends on file size and quality settings. Most clips convert to M4R within a couple of minutes on our cloud servers.

Can I batch convert multiple 3G2 files?

You can upload and convert multiple 3G2 files to M4R at the same time. Batch processing runs on our servers so your device stays free.

3G2 to M4R Quality Rating

5.0 (1 votes)
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