Convert AU to M4R
Convert your AU files to M4R online
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AU format for reliable data storage
This audio format was developed by Sun Microsystems. It is intended for storing audio files; the file itself consists of three components: the header, the annotation unit, and the audio file itself. What distinguishes this format is the small file size, due to which its sound quality is low. It can be converted into other formats, such as mp3 or MPEG. Although this format is mostly used on personal computers that are powered by operating systems Sun or Unix, AU files can also be opened using other audio players.
M4R: the ringtone file used in Apple iOS
The M4R format is used in Apples mobile devices, mostly for storing ringtones. You can create an M4R file by converting other formats or downloading it from the official iTunes store. The sound conversion employs a special type of compression, which significantly reduces the file size. The advantages of this format make it ideal for iPhone owners. M4R is one of the constituents of the standardized MPEG-4 format. One of its strong points is that the high sound quality is fully preserved after compression.
❓How to convert audio M4R to AU ?
Simply upload the M4R file in step 1, then select the AU format and click "Convert". All! After the file conversion process is completed, you can download it.
⏳How long does it take to convert M4R to AU ?
It all depends on the size of the file you are uploading. But thanks to our most powerful servers and technologies, the M4R file conversion is carried out as quickly as possible. Also, in the process of converting a file to AU, you can monitor the progress of file encoding.
🛡️Is it safe to convert M4R online?
We guarantee that your uploaded M4R files are completely safe. All AU and M4R files are deleted from the server a few minutes after the conversion process is completed.
📱How to convert M4R on Iphone or android online?
Our service works on all OS and mobile devices. Everything is very simple! Load the M4R file, select the AU file type in "step 2" and start the conversion.