Xvid to 3G2

How to Convert Xvid to 3G2 Online

1. Upload Your Xvid File: Drag and drop your .avi (or other) file containing an Xvid stream, or click "Add Files." Batch uploads are supported.
2. Pick a Quality Preset: Default is "Very High (Recommended)." Drop to "Medium" or "Low" for tiny files suited to legacy CDMA handsets, or switch File Compression mode to "Target file size (%)", "Specific file size," "Constant Bitrate," "Variable Bitrate," "Constant Quality" (CRF), or "Constraint Quality" for fine control.
3. Set Video Resolution (Optional): Use a Preset Resolution (176×144 QCIF for basic 3G2 phones, 320×240 QVGA for early CDMA smartphones), or enter a custom Width × Height. You can also scale by Resolution Percentage or keep the original.
4. Trim and Convert: Optionally open Trim and set a Time Range start and duration, then click "Convert." Files process in your browser session — no sign-up, no watermark.

Why Convert Xvid to 3G2?

Xvid is a free, GPL-licensed implementation of the MPEG-4 Part 2 Advanced Simple Profile codec, typically delivered inside an .avi container at PC-friendly bitrates. 3G2 (3GPP2, defined by spec C.S0050) is the CDMA2000 sibling of 3GP, built around tiny resolutions and mobile-friendly audio codecs (QCELP, EVRC, AMR-NB, AAC-LC) for legacy Verizon, Sprint, US Cellular, and other CDMA handsets. Converting Xvid to 3G2 strips a desktop-grade clip down to something a CDMA feature phone, an MMS gateway, or an old in-vehicle infotainment unit can actually play back.

• MMS picture-message clips — Many CDMA carriers historically capped MMS video attachments at a few hundred kilobytes; a 10-second 176×144 3G2 clip at 64-128 kbps fits where the source .avi would be rejected.
• Legacy Verizon / Sprint feature phones — Pre-LTE handsets (LG enV, Motorola RAZR V3c, Samsung Alias) were sold with native 3G2 support and no codec for raw Xvid AVI.
• Archival migration — Old voicemail-video and ringtone-style clips were saved as 3G2; recreating them from a modern Xvid source keeps period-accurate playback on emulated or restored hardware.
• CDMA in-car video systems — Pre-2012 head units in some Honda, GM, and Toyota trims accepted 3GPP2 over USB but not arbitrary AVI.
• Forensics and discovery — Investigators reproducing how a clip would have appeared on a CDMA device sometimes need the exact 3G2 wrapper rather than a re-muxed MP4.
• Education / format research — 3G2 is one of the cleanest worked examples of an ISO base media file format constrained for narrow-band mobile delivery.

Xvid vs 3G2 — Format Comparison

Quality Preset Quick Guide

Resolution Quick Guide

Frequently Asked Questions

Is 3G2 the same as 3GP, and which one do CDMA phones want?

They are siblings, not the same. 3GP (.3gp) was defined by 3GPP for GSM/UMTS networks (AT&T, T-Mobile, most international carriers). 3G2 (.3g2) was defined by 3GPP2 for CDMA2000 networks (legacy Verizon, Sprint, US Cellular). The video codec list is similar (MPEG-4 Part 2, H.263, H.264), but 3G2 additionally allows CDMA-specific audio codecs — QCELP (Qualcomm), EVRC, SMV, and VMR-WB — that 3GP does not. If you target a CDMA phone, ship 3G2; for a GSM phone, ship 3GP.

Why convert Xvid (AVI) at all instead of just renaming to .3g2?

Renaming changes the extension but not the bytes. AVI is a RIFF container; 3G2 is an ISO base media file format. The byte layout, atom structure, and even the way audio sync is signaled are different — a CDMA handset opening a renamed .avi will reject it or fail to seek. A real conversion remuxes the video stream and re-encodes the audio into a 3G2-allowed codec inside the proper container.

My Xvid file uses MP3 audio. Will that survive into 3G2?

No. The 3G2 specification does not list MP3 among its allowed audio codecs. The converter will re-encode audio to AAC-LC by default, or to AMR-NB for the smallest files compatible with the broadest range of legacy CDMA phones. If you have an old phone that only plays QCELP, encode externally first or pick a tool with explicit QCELP support — most modern converters omit it because Qualcomm's reference encoder is no longer widely shipped.

What resolution should I pick for a 2008-era CDMA flip phone?

176×144 (QCIF) is the safest choice for clamshell feature phones from roughly 2003–2010, including the Motorola RAZR V3c, LG VX-series, and Samsung Alias. CDMA smartphones from the BREW / pre-Android era (e.g., LG Voyager, HTC Touch Pro CDMA) generally handle 320×240 (QVGA). Anything above 640×480 risks decoder failure or audio-video desync on the device.

What bitrate ceiling should I set for a 3G2 file?

For an MMS-bound clip, target 64–96 kbps total at 176×144 to keep a 30-second clip under most carrier MMS caps (historically 300 KB to 1.2 MB depending on carrier and era). For phone-side playback without MMS, 192–384 kbps at 320×240 is comfortable. Going above 768 kbps inside a 3G2 wrapper rarely buys quality — the format and the target devices were not designed for it.

Will my 3G2 play on an iPhone or Android phone today?

Most modern phones can decode the underlying H.264 or MPEG-4 Part 2 video and AAC-LC audio inside 3G2, but the .3g2 extension itself is often unrecognized by gallery apps. iOS Files and Android's stock players will frequently open it through "share to VLC" or by manually selecting a media player. If you want guaranteed playback on a current phone, convert to MP4 instead — see Xvid to MP4 for the standard target.

Can I batch-convert a folder of Xvid clips?

Yes. Drop the whole folder onto the page; each file is encoded independently and downloaded as a .3g2. Settings (preset, resolution, trim) apply to all files in the batch. There is no fixed cap, but very large batches process serially in your browser session, so 5–20 short clips per batch is a good rhythm.

How does Xvid relate to DivX, and does the choice matter for 3G2 output?

Xvid and DivX both implement the MPEG-4 Part 2 Advanced Simple Profile codec. Xvid is GPL-licensed and free; DivX is a proprietary product. For decoding into 3G2, the result is identical — the converter reads the MPEG-4 Part 2 stream and re-encodes for the target. If your AVI was encoded by DivX rather than Xvid, the same workflow applies; you can use the DivX to 3G2 page if you prefer the source-format-named entry point.

What if I just want a small modern file, not a literal CDMA file?

Convert to MP4 instead. 3G2 only makes sense if you specifically need playback on a CDMA-era device, an MMS gateway that requires it, or an archival workflow. For everything else — phones, social, web — MP4/H.264 or MP4/H.265 is smaller per quality and universally playable. Start at Xvid to MP4 or Compress Xvid if size is the only goal.