Convert Opus Audio Codec (.opus) to iPod Audio (.ipod-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 iPod Audio preset converts Opus files into a format compatible with all iPod models, from the original iPod Classic (2001) to the iPod Touch (discontinued 2022). iPods never received Opus codec support — even the last iPod Touch running iOS 15 does not play .opus files natively. The preset produces an M4A file with AAC-LC at 192 kbps and 44.1 kHz, which is supported by every iPod ever manufactured.
Many people still use iPod Classics and iPod Nanos for dedicated music and podcast playback, particularly during workouts, commutes, and air travel. The iPod's battery life (up to 36 hours on the Classic) and lack of distracting apps make it popular among focused listeners. Converting Opus recordings to iPod-compatible M4A ensures these files sync via iTunes and play back flawlessly.
iPods communicate with iTunes (or Finder on macOS Catalina+), which manages format compatibility during sync. iTunes does not recognize Opus files and will skip them during library import. By converting Opus to M4A/AAC first, you ensure the files appear in iTunes, can be organized into playlists, and sync to your iPod without errors.
The 192 kbps bitrate was chosen specifically for iPods because storage is often limited (8 GB on Nano, 160 GB on Classic), and 192 kbps AAC provides excellent quality while keeping file sizes manageable. Apple's own encoding guidelines recommended 192 kbps AAC as the optimal quality-to-size ratio for portable devices with limited storage.
FFmpeg decodes the Opus audio and encodes to AAC-LC at 192 kbps with 44.1 kHz sample rate in an M4A container. AAC-LC is supported by every iPod model starting from the third-generation iPod (2003) when Apple added AAC support. The 192 kbps constant bitrate ensures consistent playback performance on iPod's dedicated audio chip. The M4A container includes iTunes-compatible metadata tags.
At 192 kbps AAC, the audio quality is excellent and suitable for both speech and music. This bitrate exceeds the transparent quality threshold for most listeners on portable headphones and earbuds. The iPod's audio hardware (Wolfson DAC on Classic, Cirrus Logic on Touch) renders 192 kbps AAC with high fidelity through both the headphone jack and dock connector.
| Device | Opus | iPod 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 iPod Audio preset breathes new life into Opus recordings by making them compatible with Apple's beloved portable media players. At 192 kbps AAC, the files are small enough for iPod's limited storage while delivering excellent audio quality through the iPod's dedicated audio hardware.
安全传输
HTTPS 加密上传
隐私优先
文件处理后自动删除
无需注册
即刻开始转换
随处可用
任何浏览器，任何设备
| No |
| 特性 | Opus | iPod Audio |
|---|---|---|
| 全称 | Opus Audio Codec | iPod Compatible Audio |
| 扩展名 | .opus | .m4a |
| 最适合 | Low latency | iPod optimized |