Convert Opus Audio Codec (.opus) to Android Audio (.android-audio) online for free. Fast, secure audio conversion with no watermarks or registration.
Upload your .opus file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .m4a file when it's ready.
The Android Audio preset converts Opus files into the optimal format for the Android device ecosystem. While Android 5.0+ supports Opus natively in some apps, support is inconsistent across manufacturers and media players. Samsung Music, for example, may not recognize .opus files, and many file manager apps display them without playback controls. The Android Audio preset produces an M4A file with AAC-LC at 192 kbps and 44.1 kHz — the format that Google's Android Compatibility Definition mandates every certified device must support.
Opus is the default audio codec for Discord, Telegram voice messages, and WebRTC browser calls. If you have downloaded voice messages, call recordings, or audio files in Opus format and want guaranteed playback on every Android phone, tablet, TV, and auto system, the Android Audio preset eliminates all compatibility uncertainty.
Android's Opus support is fragmented. The operating system can decode Opus since Android 5.0, but individual apps, file managers, and system features (ringtones, notifications, alarms) may not recognize the .opus extension or handle the Ogg container correctly. Samsung's proprietary music app, for instance, has historically had issues with Opus files. The M4A/AAC output from the Android Audio preset works everywhere — Samsung Music, YouTube Music, Google Files, Poweramp, and every system feature.
The 192 kbps AAC bitrate exceeds transparent quality for speech and provides excellent quality for music. Files are compact enough for mobile storage and small enough to share via WhatsApp, Telegram, and Signal without hitting size limits. The M4A container also supports proper metadata tagging, so your recordings appear with correct titles in music apps.
FFmpeg decodes the Opus audio (libopus, typically 48 kHz mono or stereo) and re-encodes to AAC-LC at 192 kbps with 44.1 kHz sample rate in an M4A (MPEG-4 Part 14) container. AAC-LC is mandated by Android's Compatibility Definition Document for all certified devices from Android 3.1 onward. The stereo output with constant bitrate ensures consistent behavior across Samsung, Google, OnePlus, Xiaomi, and all other manufacturers' media frameworks.
At 192 kbps AAC, the conversion is transparent for speech content and near-transparent for music. Opus at 128 kbps is roughly equivalent to AAC at 160-192 kbps in blind listening tests, so the 192 kbps AAC output fully preserves the perceived quality of typical Opus sources. The lossy-to-lossy transcoding introduces minimal artifacts at this bitrate.
| Device | Opus | Android Audio |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No |
Resolution: N/A
Bitrate: 320 kbps
OGG Vorbis preferred
Resolution: N/A
Bitrate: 256 kbps
AAC format required
Resolution: N/A
Bitrate: 128 kbps
Lossless FLAC/WAV for best quality
Resolution: N/A
Bitrate: 128 kbps
MP3 mono for spoken word
The Android Audio preset eliminates Opus compatibility issues across the fragmented Android ecosystem. The M4A/AAC output is guaranteed to work on every certified Android device, with proper metadata display, system integration for ringtones and notifications, and seamless sharing through messaging apps.
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| No |
| Funktion | Opus | Android Audio |
|---|---|---|
| Fulde navn | Opus Audio Codec | Android Compatible Audio |
| Filendelse | .opus | .m4a |
| Bedst til | Low latency | Android optimized |