AU to WMA — Format Comparison & Online Converter
Fast, instant AU to WMA conversion. No signup required. Just drop your .au file and get .wma in seconds.
Batch Settings
Vous manipulez des fichiers audio au format AU et avez besoin de les convertir en WMA pour une meilleure compatibilité ou une gestion plus efficace ? Que ce soit pour archiver des enregistrements sonores, préparer du contenu pour des plateformes spécifiques ou optimiser des fichiers pour des systèmes plus anciens, la conversion AU vers WMA est une étape courante. Notre outil est conçu pour vous offrir une solution fiable et simple, garantissant la fidélité de vos données audio tout en facilitant leur intégration dans divers environnements professionnels. Nous comprenons l'importance de la précision et de la clarté dans le traitement de vos documents numériques, et c'est pourquoi nous avons développé une interface intuitive qui rend ce processus accessible à tous, des experts en ingénierie sonore aux professionnels de l'administration.
- Archivage de délibérations municipales (Québec)
- Conversion de bandes sonores pour expositions muséales (France)
- Optimisation pour plateformes éducatives (Suisse)
En France et en Belgique, la compatibilité des fichiers audio est cruciale pour les archives publiques et les diffusions institutionnelles. Le format WMA, bien que moins courant aujourd'hui, reste parfois requis par certains systèmes patrimoniaux ou administratifs établis.
About AU to WMA Conversion
AU and WMA (introduced 1999) are both audio formats, but they differ in important ways. AU is a widely used file format. WMA (Windows Media Audio) is Microsoft's audio codec — less common today but still found in legacy collections.
When you convert AU to WMA, the goal is to convert between formats quickly. Converting AU to WMA maintains high quality with CocoConvert's optimised encoder settings. Understanding these technical differences helps you choose the right format for your workflow.
Your AU file is decoded and re-encoded as WMA. The conversion involves 4 steps: (1) your au file is uploaded and validated, (2) the file is decoded (parsed into its raw data), (3) the data is re-encoded in wma format, (4) the converted file is ready for download.
CocoConvert's converter handles the entire pipeline server-side using FFmpeg, Sharp, and qpdf — battle-tested libraries used by streaming platforms and enterprise tools. Files are encrypted in transit and deleted within 24 hours.
This conversion is ideal when you When you need a WMA file. For the opposite direction, CocoConvert also supports WMA to AU conversion.
How to Convert AU to WMA
- 1
Upload .au file
Select your AU file by dragging it to the upload zone or using the file picker. Batch upload is available for multiple files.
- 2
Choose .wma
Set WMA as the output format. The converter uses optimal settings based on the AU→WMA conversion profile.
- 3
Convert
The server-side engine decodes your AU file and re-encodes it as WMA. Processing time depends on file size and complexity.
- 4
Download result
Grab your converted .wma file. Multiple output files can be downloaded together.
What Happens When You Convert AU to WMA
Your AU file is decoded and re-encoded as WMA.
Your AU file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in WMA format
The converted file is ready for download
Format Comparison
AU
.au file
| Extension | .au |
| MIME Type | audio/basic |
| Category | Audio |
WMA
.wma file
| Extension | .wma |
| MIME Type | audio/x-ms-wma |
| Category | Audio |
Should You Convert AU to WMA?
When to Convert
- ✓When you need a WMA file
Frequently Asked Questions
What is the difference between AU and WMA?
AU is a widely used file format. WMA (Windows Media Audio) is Microsoft's audio codec — less common today but still found in legacy collections.
Does AU to WMA conversion affect quality?
Converting AU to WMA maintains high quality with CocoConvert's optimised encoder settings.
Which format has better compression, AU or WMA?
AU is a common audio format. WMA uses lossy compression. The better choice depends on whether you prioritize file size or quality.
How long does AU to WMA conversion take?
Most conversions finish in seconds. Larger files or complex audio content may take 10–30 seconds. CocoConvert processes files in parallel for batch jobs.
Is AU or WMA better for long-term storage?
Both formats use lossy compression, so consider keeping your original source file for long-term storage.
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