Free online OPUS to ALAC converter
Convert Opus audio to ALAC for Apple-compatible lossless playback.
Convert OPUS to ALAC online - free
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How to convert opus to alac file
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Source format: Opus
Opus is a modern, highly efficient audio codec designed for low-latency speech and high-quality music compression. It is widely used in VoIP, web audio, streaming, gaming voice chat, and messaging apps because it delivers excellent quality at relatively small file sizes. Opus is commonly stored in an .opus file, often inside an Ogg container.
Target format: ALAC
ALAC stands for Apple Lossless Audio Codec. It is a lossless audio format used mainly in the Apple ecosystem, including iPhone, iPad, Mac, iTunes, and Apple Music libraries. ALAC files are typically stored as .m4a and preserve the original audio data without quality loss, making them useful for archiving and for playback on Apple devices.
How to perform the conversion
The most reliable way to convert Opus to ALAC is with FFmpeg, a free command-line tool that supports both formats. Because Opus is lossy and ALAC is lossless, the conversion will not restore lost audio detail; it only changes the container and codec for compatibility.
- Install FFmpeg on your computer.
- Open a terminal or command prompt in the folder containing your Opus file.
- Run a command such as
ffmpeg -i input.opus -c:a alac output.m4a. - Check the resulting
output.m4afile in a player that supports ALAC.
If your Opus file has a different extension, such as .ogg or .webm, FFmpeg can usually still read it as long as the audio stream is Opus. You can also use desktop audio tools such as Audacity for import and export, but FFmpeg is usually faster and more dependable for format conversion.
You can also convert the file on 101convert.com for free, without installing any software.
Notes on quality and compatibility
The main limitation is that this is a lossy-to-lossless conversion. The output will be an ALAC file, but its quality cannot exceed the original Opus source. In other words, the file becomes lossless in format, not in recovered audio detail.
ALAC is well supported on Apple devices and many modern media players, but some older or non-Apple players may have limited support for .m4a files containing ALAC. If compatibility is a concern, test the output on your target device before converting a large library.
Metadata such as title, artist, and album art is often preserved by FFmpeg, but results can vary depending on the source file and player. If tags are important, verify them after conversion.
Note: This opus to alac conversion record is incomplete, must be verified, and may contain inaccuracies. Please vote below whether you found this information helpful or not.
OPUS vs ALAC: format comparison
How the OPUS and ALAC formats compare on the properties that matter most for this conversion.
| Property | .OPUS Opus | .ALAC Apple Lossless Audio Codec |
|---|---|---|
| Compression | Lossy | Lossless |
| Audio quality | High | Lossless |
| Audio channels | Multichannel | — |
| Metadata support | Extensive | Basic |
| Streaming | Yes | Yes |
| DRM protection | — | Optional |
| Opens in a web browser | Yes, natively | No |
| Typical file size | Small | Medium |
| Open standard | Yes | Partly open |
| Best used for | Streaming | Music |
| Introduced | 2012 | 2004 |
| Developer | Xiph.Org Foundation | Apple Inc. |
| MIME type | audio/opus | audio/alac |
Frequently asked questions
Is the OPUS to ALAC converter free?
Yes, converting OPUS to ALAC on 101convert.com is completely free. No registration, email address or installation is required.
How large can my OPUS file be?
You can upload OPUS files up to 1000 MB and convert up to 100 files at once in a single batch.
What happens to my uploaded files?
Files are processed automatically and deleted from our servers within a few minutes after conversion. We never view or share your files.
Do I need to install any software to convert OPUS to ALAC?
No. The OPUS to ALAC conversion runs entirely online in your browser and works on Windows, Mac, Linux, Android and iPhone.
Did the conversion fail?
In most cases, the cause is an incorrect file format. Please upload a valid OPUS file for this OPUS to ALAC conversion. Occasionally, the issue may be on our side. We analyze recurring conversion failures and disable or fix the converter if we detect a defect.