Convert Opus Audio Codec (.opus) to Windows Media Audio (.wma) online for free. Fast, secure audio conversion with no watermarks or registration.
Conversion settings — add a file to adjust
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 .wma file when it's ready.
WMA (Windows Media Audio) is Microsoft's proprietary audio codec family, introduced in 1999 as part of the Windows Media framework. WMA Standard competes with MP3 and AAC for lossy compression, while WMA Lossless and WMA Pro offer lossless and multichannel variants. Converting Opus to WMA targets the Windows-centric audio ecosystem — Windows Media Player, older Zune devices, and enterprise environments where Microsoft formats are mandated.
While WMA has declined in popularity as Microsoft itself now supports MP3 and AAC in Windows, it remains relevant in corporate environments with legacy Windows Media infrastructure, older car stereos with WMA-only USB playback, and certain digital audio players manufactured before 2015 that support WMA but not AAC or Opus.
Legacy Windows environments in corporate, government, and education sectors sometimes mandate WMA format for audio distribution. Internal training portals, corporate voicemail systems, and Windows-based digital signage may be configured to accept only WMA files. If you have Opus recordings from modern communication tools that need to feed into these legacy systems, WMA is the required target.
Certain older car stereos, particularly from Hyundai, Kia, Toyota, and Ford models manufactured between 2005-2015, support WMA via USB but not AAC or Opus. For drivers with these vehicles who want to play Opus recordings through their car's audio system, WMA is sometimes the best available option alongside MP3.
FFmpeg decodes the Opus stream and encodes using the WMA v2 codec (wmav2) at 128-192 kbps with 44.1 kHz sample rate in an ASF (Advanced Systems Format) container. WMA v2 is the most widely supported WMA variant, compatible with all versions of Windows Media Player from WMP 7 onward. The ASF container supports DRM, but the conversion does not apply any copy protection.
At 128 kbps, WMA v2 quality is comparable to MP3 at the same bitrate — adequate for speech and acceptable for music. At 192 kbps, quality improves to near-transparent for most content. WMA is generally considered slightly inferior to AAC at the same bitrate but comparable to MP3.
| Device | Opus | WMA |
|---|---|---|
| Windows PC | Partial | Native |
| 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
Opus to WMA is a legacy conversion for Windows-centric environments, older car stereos, and corporate infrastructure built on Microsoft's media stack. While WMA is declining in relevance, it remains the required format in specific enterprise and automotive scenarios.
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| No |
| 기능 | Opus | WMA |
|---|---|---|
| 전체 이름 | Opus Audio Codec | Windows Media Audio |
| 확장자 | .opus | .wma |
| 최적 용도 | Low latency | Windows native |