M1V to AU Converter
Processing entirely on your device — large files may take a moment.
M1V is a raw MPEG-1 video elementary stream — VCD-era video without a container. Converting AU to WAV preserves the samples in a format every modern tool reads.
iLoveConverter processes everything locally on your computer, which makes it private and fast: no upload wait, no server storage, no limits. Add as many files as you like — batch conversion is built in.
How M1V compares to AU
| M1V | AU | |
|---|---|---|
| Compatibility | ffmpeg, everything | Legacy Unix tools |
| Best for | VCD-era clip rescue | Old system sounds and recordings |
How to convert M1V to AU
- 1
Select your files
Select your M1V video.
- 2
Convert instantly
The engine demuxes the container and encodes the audio track into your chosen format.
- 3
Download results
Download the AU audio — the video track is simply dropped.
About the M1V format
M1V is a bare MPEG-1 video elementary stream — the video of Video-CDs without any container. MPEG-1's 352x288 VCD resolution looks prehistoric now, but the decoder is built into literally everything, which is why the format refuses to die.
Elementary streams confuse modern players (no timestamps container), so the fix is wrapping into MP4 — the video decodes through ffmpeg and gains proper seeking.
+ Strengths
- ✓Plays on literally any hardware
- ✓Simple to decode — zero surprises
- ✓Common on old CD rips
! Limitations
- −VCD-grade resolution only
- −No timestamps without a container
- −No audio track inside M1V
About the AU format
AU is Sun Microsystems' audio format from the Unix workstation age: a small header followed by µ-law (or PCM) samples. Java's applet era shipped it everywhere, and old Unix sound tooling still emits it.
Modern players increasingly skip it. Converting AU to WAV preserves the samples bit-for-bit while moving the file into universal territory — the standard rescue path for system sounds and old recordings.
+ Strengths
- ✓Simple, lossless sample storage
- ✓Native to old Unix/Java tooling
! Limitations
- −µ-law flavor sounds dated and mono
- −Dropped by modern players
Why convert M1V to AU?
There is a concrete reason this conversion exists: VCD-grade resolution only AU sidesteps that — Simple, lossless sample storage If that is your situation, the tool above settles it in seconds, entirely on your device.
Frequently asked questions
Is this M1V to AU converter really free?
Yes — completely free, with no sign-up, no watermark and no daily conversion limits. The site is supported by advertising.
Are my files uploaded to a server?
No. The conversion runs entirely inside your browser using WebAssembly, so your files never leave your device — that is what makes it instant and private.
Does it work on Windows, Mac, iPhone and Android?
Yes. Anything with a modern browser works: Windows, macOS, Linux, Android and iOS. No software installation is required.
Is there a file size limit for M1V to AU?
The only limit is your device's memory, since nothing is uploaded. Files up to a few hundred megabytes work fine on a modern desktop browser; very large files simply take a little longer.
Does converting M1V to AU re-encode my video?
Yes. The video is decoded and re-encoded with the settings chosen by the quality slider, which is what allows the format and size to change. For an archival copy, keep higher quality; for sharing, lower quality gives a much smaller file.
Will the audio track be kept?
Yes. The audio is carried over and re-encoded to the standard audio codec of AU, staying in sync with the video. If your M1V file has multiple audio tracks, the first one is used.