# Convert RMVB to AU

> Convert RMVB to AU online for free in seconds. Files are processed in a secure, isolated sandbox and deleted automatically. No sign-up, no watermarks.

URL: https://www.converterrr.com/rmvb-to-au

- Runs in an isolated cloud sandbox with FFmpeg: files are deleted automatically, and the job uses cloud credits.
- Engines: FFmpeg (cloud).
- API: available. `POST /api/v1/jobs` with `"output_format": "au"` (paid plans).
- More: [Video converter](https://www.converterrr.com/video-converter), [RMVB converter](https://www.converterrr.com/rmvb-converter).

## How to convert RMVB to AU

1. **Add your RMVB files.** Drag and drop RMVB files onto the converter, paste them, or click to browse. You can add several at once.
2. **Choose AU.** AU is already selected. Open Options if you want to change quality, size or metadata.
3. **Convert.** Click Convert. Files are processed in a secure cloud sandbox and are usually ready in seconds.
4. **Download your AU.** Download each AU file, or everything at once as a ZIP.

## Good to know

- Only the audio track is kept — the result is an AU file you can play anywhere. Use Options to pick a bitrate.
- RMVB files are typically used for older shared video files, while AU is best for legacy Unix and Java applications.
- This conversion runs on FFmpeg in an isolated cloud sandbox. Files are encrypted in transit and deleted automatically.

## RMVB vs AU

|  | RMVB | AU |
| --- | --- | --- |
| Full name | RealMedia Variable Bitrate | Sun Audio |
| Type | Video | Audio |
| Extensions | .rmvb | .au |
| MIME type | application/vnd.rn-realmedia-vbr | audio/basic |
| Best for | older shared video files | legacy Unix and Java applications |
| Properties | legacy format, proprietary | legacy format |

**RMVB:** RMVB is the variable-bitrate version of RealMedia, once common for sharing TV series.

**AU:** AU is a simple audio format introduced by Sun Microsystems, common on early Unix systems and Java.

## Related conversions

- [RMVB to MP4](https://www.converterrr.com/rmvb-to-mp4) (cloud)
- [MP3 to AU](https://www.converterrr.com/mp3-to-au) (in the browser)
- [RMVB to MP3](https://www.converterrr.com/rmvb-to-mp3) (cloud)
- [MP4 to AU](https://www.converterrr.com/mp4-to-au) (in the browser)
- [RMVB to WebP](https://www.converterrr.com/rmvb-to-webp) (cloud)
- [WAV to AU](https://www.converterrr.com/wav-to-au) (in the browser)
- [RMVB to MOV](https://www.converterrr.com/rmvb-to-mov) (cloud)
- [MOV to AU](https://www.converterrr.com/mov-to-au) (in the browser)
- [RMVB to GIF](https://www.converterrr.com/rmvb-to-gif) (cloud)
- [M4A to AU](https://www.converterrr.com/m4a-to-au) (in the browser)
- [RMVB to WAV](https://www.converterrr.com/rmvb-to-wav) (cloud)
- [WebM to AU](https://www.converterrr.com/webm-to-au) (in the browser)

## Convert RMVB to other formats

[RMVB to MP4](https://www.converterrr.com/rmvb-to-mp4), [RMVB to MP3](https://www.converterrr.com/rmvb-to-mp3), [RMVB to WebP](https://www.converterrr.com/rmvb-to-webp), [RMVB to MOV](https://www.converterrr.com/rmvb-to-mov), [RMVB to GIF](https://www.converterrr.com/rmvb-to-gif), [RMVB to WAV](https://www.converterrr.com/rmvb-to-wav), [RMVB to WebM](https://www.converterrr.com/rmvb-to-webm), [RMVB to MKV](https://www.converterrr.com/rmvb-to-mkv), [RMVB to M4A](https://www.converterrr.com/rmvb-to-m4a), [RMVB to AVI](https://www.converterrr.com/rmvb-to-avi), [RMVB to FLAC](https://www.converterrr.com/rmvb-to-flac), [RMVB to AAC](https://www.converterrr.com/rmvb-to-aac), [RMVB to OGG](https://www.converterrr.com/rmvb-to-ogg), [RMVB to WMV](https://www.converterrr.com/rmvb-to-wmv), [RMVB to Opus](https://www.converterrr.com/rmvb-to-opus), [RMVB to FLV](https://www.converterrr.com/rmvb-to-flv), [RMVB to M4V](https://www.converterrr.com/rmvb-to-m4v), [RMVB to MPEG](https://www.converterrr.com/rmvb-to-mpeg), [RMVB to 3GP](https://www.converterrr.com/rmvb-to-3gp), [RMVB to WMA](https://www.converterrr.com/rmvb-to-wma), [RMVB to MPG](https://www.converterrr.com/rmvb-to-mpg), [RMVB to TS](https://www.converterrr.com/rmvb-to-ts), [RMVB to AIFF](https://www.converterrr.com/rmvb-to-aiff), [RMVB to AMR](https://www.converterrr.com/rmvb-to-amr)

## Convert other formats to AU

[MP3 to AU](https://www.converterrr.com/mp3-to-au), [MP4 to AU](https://www.converterrr.com/mp4-to-au), [WAV to AU](https://www.converterrr.com/wav-to-au), [MOV to AU](https://www.converterrr.com/mov-to-au), [M4A to AU](https://www.converterrr.com/m4a-to-au), [WebM to AU](https://www.converterrr.com/webm-to-au), [FLAC to AU](https://www.converterrr.com/flac-to-au), [MKV to AU](https://www.converterrr.com/mkv-to-au), [AAC to AU](https://www.converterrr.com/aac-to-au), [AVI to AU](https://www.converterrr.com/avi-to-au), [OGG to AU](https://www.converterrr.com/ogg-to-au), [WMV to AU](https://www.converterrr.com/wmv-to-au), [Opus to AU](https://www.converterrr.com/opus-to-au), [WMA to AU](https://www.converterrr.com/wma-to-au), [FLV to AU](https://www.converterrr.com/flv-to-au), [M4V to AU](https://www.converterrr.com/m4v-to-au), [MPEG to AU](https://www.converterrr.com/mpeg-to-au), [3GP to AU](https://www.converterrr.com/3gp-to-au), [AIFF to AU](https://www.converterrr.com/aiff-to-au), [AMR to AU](https://www.converterrr.com/amr-to-au), [MPG to AU](https://www.converterrr.com/mpg-to-au), [TS to AU](https://www.converterrr.com/ts-to-au), [M4B to AU](https://www.converterrr.com/m4b-to-au), [MTS to AU](https://www.converterrr.com/mts-to-au)

## RMVB to AU: frequently asked questions

### How do I convert RMVB to AU?

Drop your RMVB file onto the converter above, make sure AU is selected, and click Convert. When it's done, download the AU file — it usually takes a few seconds.

### Is it safe to convert RMVB to AU here?

Yes. Your file is sent over an encrypted connection to an isolated sandbox that's created for your job only, then both the original and the result are deleted automatically.

### Is the RMVB to AU converter free?

Yes. Cloud conversions like this one use credits, and you get free credits every day (3 without an account, 10 with a free account).

### Will converting RMVB to AU reduce quality?

No — AU preserves the content of your RMVB file as faithfully as the format allows.

### Can I convert multiple RMVB files at once?

Yes. Add up to 5 files at a time without an account, 10 with a free account and up to 500 on paid plans, then download them individually or as a single ZIP.