AU vs VMS — Comparison & Free Converter
Fast, instant AU to VMS conversion. No signup required. Just drop your .au file and get .vms in seconds.
Batch Settings
Vous manipulez des fichiers audio au format AU et vous avez besoin de les convertir au format VMS ? Que ce soit pour des raisons de compatibilité logicielle, d'archivage spécifique ou de traitement sur des systèmes particuliers, cette conversion peut s'avérer essentielle. Le format AU, bien que courant dans certains environnements UNIX et lié à des applications historiques, n'est pas toujours universellement supporté, contrairement au VMS qui peut être requis pour des plateformes vocales ou des systèmes d'enregistrement dédiés. Notre outil est conçu pour faciliter cette transition, vous permettant de passer d'un format à l'autre sans perte de qualité significative et avec une grande simplicité. Finis les tracas des incompatibilités : donnez une nouvelle vie à vos enregistrements audio avec une conversion rapide et fiable, adaptée à vos besoins professionnels ou personnels.
- Archivage de dictées médicales
- Compatibilité avec anciens systèmes de messagerie vocale
- Intégration dans des plateformes de téléphonie IP
En France, en Belgique, en Suisse et au Québec, la conversion vers VMS est parfois rencontrée dans le cadre de la modernisation de systèmes téléphoniques d'entreprises ou d'administrations qui ont longtemps utilisé des infrastructures propriétaires.
About AU to VMS Conversion
AU or VMS — which format should you use? The answer depends on your needs. Here's a quick breakdown.
AU is a widely used file format. It has common platform support. VMS is a widely used file format. It has common platform support.
So when should you convert AU to VMS? This conversion is ideal when you When you need a VMS file. This conversion helps you convert between formats quickly.
Converting AU to VMS maintains high quality with CocoConvert's optimised encoder settings.
If you've decided VMS is the right choice, CocoConvert makes the conversion effortless. Upload your .au file, pick VMS, and click Convert — done in seconds. The converter runs on secure servers in Germany, powered by FFmpeg, Sharp, and qpdf. Files are encrypted via TLS and erased within 24 hours.
Free tier: 5 files/hour, 250 MB each. Pro: 100 files/hour, 5 GB each. Works in every modern browser on desktop and mobile.
How to Convert AU to VMS
- 1
Choose your AU file
Upload your .au file using drag-and-drop or the file browser. Batch mode lets you add multiple files.
- 2
Set format to VMS
Select .vms from the output options. The converter applies optimal quality settings automatically.
- 3
Run the conversion
Click Convert. Server-side processing means your device stays fast — even for large audio files.
- 4
Get your VMS file
Download your converted file instantly. Batch downloads are available as a zip archive.
What Happens When You Convert AU to VMS
Your AU file is decoded and re-encoded as VMS.
Your AU file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in VMS format
The converted file is ready for download
Format Comparison
AU
.au file
| Extension | .au |
| MIME Type | audio/basic |
| Category | Audio |
VMS
.vms file
| Extension | .vms |
| MIME Type | audio/x-vms |
| Category | Audio |
Should You Convert AU to VMS?
When to Convert
- ✓When you need a VMS file
Frequently Asked Questions
Should I use AU or VMS?
It depends on your goal. AU preserves full quality. VMS preserves full quality. Choose based on whether file size or quality matters more for your use case.
Is VMS higher quality than AU?
Not necessarily. Converting AU to VMS maintains high quality with CocoConvert's optimised encoder settings. Quality depends on the compression type and settings, not just the format name.
Can I convert AU to VMS on Mac and Windows?
Yes. CocoConvert is a web-based tool that works in all modern browsers — Chrome, Safari, Firefox, Edge — on any operating system including macOS, Windows, Linux, iOS, and Android.
Is CocoConvert free for AU to VMS?
Yes. Free users get 5 conversions per hour (250 MB each). Pro subscribers unlock 100 files per hour, 5 GB per file, and priority processing.
What tools does CocoConvert use for AU to VMS?
CocoConvert uses FFmpeg for audio/video, Sharp for images, and qpdf for documents — the same open-source libraries used by Netflix, YouTube, and major enterprise platforms.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.