Convert 3GPP2 Multimedia (.3g2) to Windows Media Audio (.wma) online for free. Fast, secure video conversion with no watermarks or registration.
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WMA (Windows Media Audio) is Microsoft's proprietary audio format, designed as a competitor to MP3 and AAC during the early 2000s. Converting 3G2 to WMA extracts the audio from old CDMA phone recordings and encodes it in the format that integrates most naturally with Windows Media Player, Windows Explorer, and the legacy Windows media ecosystem. WMA supports DRM, metadata, and variable bitrate encoding.
While WMA has lost market share to AAC and MP3 in recent years, it remains natively supported on every Windows PC and many legacy portable media players from the Windows Media era (Creative Zen, Microsoft Zune, older Samsung players). For users deeply embedded in the Windows ecosystem with legacy hardware, WMA provides the most familiar and compatible audio format.
WMA extraction makes sense when your audio playback chain is entirely Windows-based and includes legacy hardware. Windows Media Player, Groove Music (now deprecated), and Windows Explorer have first-class WMA support — rich metadata display, album art, ratings, and gapless playback. If your media library is organized around WMA, adding extracted phone audio in the same format maintains consistency.
WMA also supports lossless mode (WMA Lossless) for archival quality and low-bitrate speech mode (WMA Voice) optimized for spoken content. Since 3G2 phone audio is primarily speech, WMA Voice mode can produce extremely compact files while maintaining intelligible speech quality — often at bitrates as low as 4 kbps.
FFmpeg decodes the AMR audio from the 3G2 container and re-encodes it using the WMA v2 encoder (wmav2) at 128 kbps in an ASF container with the .wma extension. For speech-optimized encoding, the lower bitrate of 32-48 kbps is suitable given the telephone-quality source material. The video track is stripped with -vn. The ASF container supports WMA-specific metadata fields including Windows Media properties for library integration.
WMA at 128 kbps is comparable to MP3 at 128 kbps in quality — adequate for any phone-grade audio source. At lower bitrates (64-96 kbps), WMA tends to handle speech better than MP3. For 3G2 source material, even 64 kbps WMA produces transparent results since the original AMR audio has very limited fidelity.
| Device | 3G2 | WMA |
|---|---|---|
| Windows PC | Partial | Native |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Native | Partial |
| Linux | Partial | Partial |
| Web Browser | No |
Resolution: 1920x1080
Bitrate: 8-12 Mbps
H.264 recommended for fast processing
Resolution: 1080x1080
Bitrate: 3.5 Mbps
Square or 9:16 for Reels
Resolution: 1080x1920
Bitrate: 4 Mbps
9:16 vertical, under 60s ideal
Resolution: 1280x720
Bitrate: 5 Mbps
Under 140s, 512MB max
Resolution: 960x540
Bitrate: 2 Mbps
16MB limit for standard, 64MB for document
Resolution: 1280x720
Bitrate: 4 Mbps
Converting 3G2 to WMA serves Windows-centric audio workflows and legacy portable media player compatibility. While AAC or MP3 are more universal, WMA provides the tightest integration with Windows Media Player and legacy Microsoft ecosystem devices.
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Berfungsi di Mana Saja
| No |
8MB free, 50MB Nitro
Browser apa pun, perangkat apa pun
| Fitur | 3G2 | WMA |
|---|---|---|
| Nama Lengkap | 3GPP2 Multimedia | Windows Media Audio |
| Ekstensi | .3g2 | .wma |
| Terbaik Untuk | Mobile optimized | Windows native |