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Convert 3GP to SPX
Convert 3GP to SPX format — 100% browser-based, no upload required.
2 cores · low tier
Drop a file here or click to select
Format will be auto-detected
About these formats
Source
3GP
3GPP MultimediaMobile-optimized video format for 3G phones. Uses low resolution and bitrate to minimize file size for mobile networks.
Best for
Old mobile phonesLow-bandwidth streamingMMS messages
Advantages
- + Very small files
- + Mobile optimized
- + Wide phone support
Limitations
- − Very low quality
- − Low resolution
- − Outdated for modern use
Target
SPX
Speex AudioOpen-source speech codec designed for voice over IP. Provides good speech compression at very low bitrates.
Best for
VoIPVoice chatSpeech compressionPodcasts
Advantages
- + Optimized for speech
- + Open source
- + Very low bitrate
Limitations
- − Superseded by Opus
- − Speech only
- − Declining usage