Convert MP4 to WMA — Free Online Converter
Convert MPEG-4 Part 14 (.mp4) to Windows Media Audio (.wma) online for free. Fast, secure video conversion with no watermarks or registration.
Conversion settings — add a file to adjust
About MP4 to WMA Conversion
MP4 to WMA conversion extracts the audio track from an MPEG-4 video and encodes it as a Windows Media Audio file. WMA was developed by Microsoft as a competitor to MP3 and AAC, and it remains deeply integrated into the Windows ecosystem. Windows Media Player, Windows Phone (legacy), and many Windows-based car stereo systems use WMA as their preferred audio format.
Our converter decodes the MP4 audio stream and re-encodes it using the WMA v2 codec via FFmpeg. The output is wrapped in the ASF (Advanced Systems Format) container with the .wma extension.
Why Convert MP4 to WMA?
WMA conversion serves Windows-centric environments where WMA is the expected format. Some older Windows car stereo head units only support WMA and MP3 for USB playback — AAC files are ignored. Windows Phone devices prioritized WMA for syncing via Zune software. Corporate environments running Windows Media Services for internal streaming may require WMA input. While WMA's relevance has declined, these legacy systems still exist in significant numbers.
Common Use Cases
- Extract audio for playback on car stereos that only support WMA and MP3