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Supports: OGA
OGA (Ogg Audio) typically uses the Vorbis codec — an older open-source audio format. Opus is its modern successor, developed by the IETF and standardized as RFC 6716. Opus delivers superior compression and adaptability, handling everything from low-bitrate voice (6 kbps) to high-fidelity music (510 kbps) in a single codec. Converting OGA to Opus upgrades your open-source audio to the most efficient lossy codec available while staying entirely within the royalty-free Ogg ecosystem.
| Feature | OGA (Vorbis) | Opus (output) |
|---|---|---|
| Developer | Xiph.Org | IETF (Xiph.Org + others) |
| Standard | De facto open | RFC 6716 (IETF standard) |
| Bitrate range | 45–500 kbps | 6–510 kbps |
| Quality at 128 kbps | Good | Excellent |
| Low-latency voice | ❌ | ✅ (designed for it) |
| WebRTC | ❌ | ✅ (mandatory codec) |
| License | ✅ Royalty-free | ✅ Royalty-free |
| Browser support | Firefox, Chrome | ✅ All modern browsers |
OGA uses the Vorbis codec (2000), while Opus (2012) is its modern successor. Opus achieves better quality at lower bitrates and handles both voice and music in a single codec. Both are open-source and royalty-free.
At the same bitrate, Opus produces better quality than Vorbis. At the same quality level, Opus produces smaller files. The conversion re-encodes the audio, so use "Very High" or "Highest" Quality Preset.
Leave it set to "Original" to match the source. Opus internally resamples to 48000 Hz, but the converter handles this automatically.
Yes. Use the Trim option to set a start time and duration. Only the selected segment is converted.
Opus is supported by all modern browsers (Chrome, Firefox, Safari, Edge), VLC, Android, iOS 11+, and most modern audio players. It is the mandatory codec for WebRTC.