Convert MKV to AIFF
Extract the audio from your MKV video files and save it as AIFF, directly in your browser.
How to convert video to audio in 3 steps
Choose a MKV video file.
Click convert to AIFF.
Download your AIFF audio.
Format descriptions
MKV — MKV (Matroska) is a flexible open-source video container that supports multiple video, audio and subtitle tracks in a single file.
AIFF — AIFF is Apple's lossless audio format, similar to WAV. It delivers lossless quality with large files and is used in professional settings.
Technical comparison: MKV vs AIFF
Technical breakdown of the MKV and AIFF specifications: compression, colour, transparency and animation support.
| Property | MKV | AIFF |
|---|---|---|
| Specification | MKV (Matroska Multimedia Container) | AIFF (Audio Interchange File Format) |
| Media type | Video | Audio |
| Compression | Hybrid (lossy or lossless) · H.264 / HEVC / VP9 / AV1 | Uncompressed · Linear PCM |
| Color space / bit depth | 8/10/12-bit HDR | 16/24/32-bit float |
| Transparency | Not applicable | Not applicable |
| Animation | Yes (animated) | No (static) |
| Best for | MKV (Matroska) is a flexible open-source video container that supports multiple video, audio and subtitle tracks in a single file. | AIFF is Apple's lossless audio format, similar to WAV. It delivers lossless quality with large files and is used in professional settings. |
What happens when converting MKV to AIFF?
The MKV data is decoded inside your browser with WebAssembly and re-encoded to the AIFF specification, so no file is ever uploaded to a server. AIFF uses lossy compression: the file gets far lighter, but a small amount of fine detail is discarded in the process. MKV supports animation while AIFF does not, so only the first frame is kept. Audio is re-encoded with the AIFF codec while keeping the original duration, so audio and video stay in sync.
Frequently Asked Questions
What is video to audio conversion?
Video to audio conversion extracts the sound track from a video file, for example from MKV to AIFF, keeping only the audio content.
Are my video files uploaded?
No. This tool processes video files directly in your browser. Your video files are never sent to a server.
Which video formats are supported?
This tool converts the audio of MKV video files to AIFF, all in your browser.
Is it really free and unlimited?
Yes, the tool is completely free and you can convert as many videos as you want, with no limits.
Does it work on mobile too?
Yes, it works on any modern device, including smartphones, tablets and desktop computers.
Which format will the result be in?
The converted file will always be in AIFF format, ready to download and use.
About the video to audio converter
Extract and convert the audio from your MKV videos to AIFF for free. Everything happens in your browser: your files are never uploaded to a server, and you need no downloads or sign-up to get started.
See also:
- Video to Audio Converters
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- Convert MKV to MP3Extract and convert the audio from your MKV videos to MP3 for free. Everything happens in your browser: your files are never uploaded to a server, and you need no downloads or sign-up to get started.
- Convert MKV to WAVExtract and convert the audio from your MKV videos to WAV for free. Everything happens in your browser: your files are never uploaded to a server, and you need no downloads or sign-up to get started.
- Convert MKV to OGGExtract and convert the audio from your MKV videos to OGG for free. Everything happens in your browser: your files are never uploaded to a server, and you need no downloads or sign-up to get started.