MPG to 3G2 Converter

MPG to 3G2 Converter

MPG is a legacy desktop video container — usually MPEG-1 or MPEG-2 video with MP2 audio, standardized by ISO/IEC for discs and broadcast. 3G2 is the 3GPP2 mobile container built for CDMA2000 phones, the carrier-network twin of GSM's .3gp. This conversion re-encodes both the picture and sound down to a small, old-mobile format, so be clear about why first: the 3G CDMA networks 3G2 targeted have been shut down since the end of 2022, and modern phones play MP4 universally. Reach for 3G2 only when a specific old CDMA handset, MMS gateway, or 3GPP2-based player on the other end requires it — otherwise convert MPG to MP4 instead.

MPG Format at a Glance

3G2 Format at a Glance

Both 3G2 and 3GP are structurally based on the same ISO base media file format, so they look nearly identical inside. The split is by network: .3gp came from 3GPP for GSM/UMTS phones, while .3g2 came from 3GPP2 for CDMA2000 phones, and 3G2 adds CDMA speech codecs while dropping a couple of the newer AAC/AMR variants. This page outputs the CDMA variant; if your target needs the GSM variant, use MPG to 3GP instead.

How to Convert MPG to 3G2

1. Upload Your MPG File: Drag and drop your .mpg or .mpeg file onto the page, or click "+ Add Files" to browse. You can queue several clips and convert them with the same settings in one batch.
2. Pick the Video Codec: Open "Show All Options" and set the Video Codec. The default is H.264, which holds the most detail at 3G2's low bitrates and is read by most post-2008 handsets; switch to H.263 or MPEG-4 only when targeting an older phone that predates H.264 support. The default audio codec is AMR, which every 3G2-capable device decodes.
3. Set Resolution and Quality Preset (Optional): Under Video resolution, use Preset Resolutions or Width x Height to drop the frame size to something a phone screen expects (176×144 or 320×240 are typical). Under File Compression, use the Quality Preset or "Specific file size" to fit an MMS or storage limit, and use Trim → Time Range to export just one clip.
4. Convert and Download: Click "Convert" and download your .3g2 file. Files upload over an encrypted connection, are processed on our servers, and are deleted automatically a few hours later. No sign-up, no watermark.

Frequently Asked Questions

What is the difference between 3G2 and 3GP?

Both are built on the same ISO base media file format (ISO/IEC 14496-12, MPEG-4 Part 12), so internally they are near-identical. The difference is the network they were made for: .3gp is the 3GPP container for GSM/UMTS phones, while .3g2 is the 3GPP2 container for CDMA2000 phones — in the US, older Verizon and Sprint handsets. They share H.263, MPEG-4, and H.264 video plus AMR/AAC audio, but .3g2 adds CDMA speech codecs (QCELP, EVRC, SMV) and drops HE-AAC v2 and AMR-WB+. If your device is on a GSM carrier, convert MPG to 3GP instead.

Which video and audio codecs does the 3G2 output use?

By default this converter writes H.264 video with AMR audio inside the 3G2 container, which suits CDMA handsets from roughly 2009 onward. For older phones you can switch the Video Codec to H.263 or MPEG-4 and keep audio on AMR Narrow Band; if the device supports it, AAC is also available. The 3G2 standard additionally defines CDMA-specific speech codecs such as QCELP, EVRC, and SMV, but H.264 plus AMR is the most broadly playable pairing this tool produces.

Will converting MPG to 3G2 lose quality?

Yes — this is a lossy transcode into a format designed for low-bandwidth CDMA delivery, so expect a visible drop, especially in resolution and detail. That trade-off is the format's whole point: 3G2 exists to make a clip tiny and playable on limited hardware. Because MPG sources are already compressed (MPEG-1/MPEG-2), converting to 3G2 stacks a second generation of lossy compression on top. If you do not actually need the 3G2 container, converting to MP4 keeps far more quality at a similar size.

What resolution should I pick for an old CDMA phone?

Match the handset. The two safe legacy sizes are 176×144 (QCIF) and 320×240 (QVGA); many early feature phones only decode H.263 at QCIF. Set it under Video resolution using Preset Resolutions or Width x Height. Going larger risks a file the phone cannot open, while going smaller than the screen needs throws away quality for no benefit. In our testing, a one-minute SD MPG re-encoded to 176×144 H.263 came out to a few hundred kilobytes — small enough for legacy MMS but visibly soft, which is exactly the format's design point.

What can open a 3G2 file on a computer?

On a desktop, VLC Media Player plays .3g2 files directly on Windows, macOS, and Linux, and QuickTime can open many of them on macOS. Mobile playback is less reliable: current Android and iOS devices have largely standardized on MP4/H.264 and may not play 3G2 out of the box. If you are trying to view old phone footage rather than feed an old device, the more common need is the reverse conversion — see 3G2 to MP4.

Is 3G2 still worth using now that CDMA networks are gone?

For network delivery, no — Verizon shut down its 3G CDMA network on December 31, 2022, and Sprint's CDMA service ended earlier, so there is no live CDMA network to stream a .3g2 over. The format remains useful only offline: feeding a preserved handset for testing or display, satisfying an embedded device or test harness that hard-codes .3g2 ingest, or matching a legacy spec in an archival workflow. For everyday playback, MPG to MP4 is the right call.

How are my files handled after conversion?

Your file is uploaded over an encrypted connection and processed on our servers — no sign-up and no watermark. Uploaded files are deleted automatically a few hours after conversion and are never shared or made public. The practical limit on a large MPG is upload time, not your device, so a faster connection means a quicker job.