Convert MKV to ALAC
Convert MKV files to ALAC format online for free. Extract lossless audio from MKV videos with our free converter.
Drag & Drop Video File
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Max file size: 50 MBMax duration: 30 min
Sign up for increased limitsA free account gets you up to 50 MB and 30 min.
Why Choose Scriptivox MKV to ALAC Converter?
Fast Conversion
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Works directly in your web browser. No software download or installation required.
How to Use MKV → ALAC
Upload File
Drag and drop your MKV file or click to browse. Supports files up to 1GB.
Convert
Select ALAC as your output format and click convert. Our servers will process your file instantly.
Download
Download your converted file instantly. The download link expires in 1 hour for security.
MKV vs ALAC: format comparison
How the two formats differ on the things that change your result.
| Specification | MKV (source) | ALAC (result) |
|---|---|---|
| Container | Matroska | MPEG-4 (.m4a) |
| Developed by | Matroska.org | Apple |
| Introduced | 2002 | 2004 |
| Audio codecs | AAC, FLAC, Opus, AC-3, DTS | ALAC |
| Compression | Lossy | Lossless (compressed) |
| Approx. file size | 60–300 MB per minute | 5–7 MB per minute |
| Metadata / tags | Container tags | MPEG-4 iTunes-style atoms |
| Licensing | Royalty-free | Royalty-free |
| Plays natively on | Native: Windows · Needs a player: macOS, iOS, Android, Smart TVs | Native: macOS, iOS · Needs a player: Windows, Android, Web browsers, Smart TVs |
| Best for | media archives, multi-language releases, home theatre | long-term archiving, the Apple ecosystem, audiophile listening |
What changes when you convert MKV to ALAC
This extracts the audio and discards the video entirely. The soundtrack inside a MKV file is typically AAC, and it is re-encoded to ALAC on the way out.
Expect a much smaller file. Video accounts for most of the bytes, so about 180 MB per minute becomes roughly 6 MB per minute of ALAC.
Choosing lossless ALAC means nothing further is lost, though it cannot exceed the AAC track stored in the source video.
Subtitles do not survive audio extraction, since an audio container has nowhere to store them.
When a video holds several audio tracks, the main one is extracted; alternate language tracks are not merged into the result.
About MKV to ALAC Conversion
Extracting ALAC audio from a MKV video pulls the soundtrack out of the Matroska container and writes it as a standalone MPEG-4 (.m4a) file. The video stream, which holds most of the data, is discarded.
Developed by Matroska.org in 2002, MKV stores audio using H.264, H.265, VP9, AV1. That codec choice sets the upper bound on what any conversion can preserve.
ALAC, from Apple and dating to 2004, uses ALAC and plays natively on 2 of the six platform categories we track. That combination is usually why people convert into it.
After converting your file, you can use Scriptivox transcription services to convert your audio to text. Perfect for meetings, interviews, podcasts, and more.
MKV to ALAC: common questions
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