AIFF vs MKV — Comparison & Free Converter
Fast, instant AIFF to MKV conversion. No signup required. Just drop your .aiff file and get .mkv in seconds.
Batch Settings
Quality reduction ahead
AIFF is uncompressed, meaning every bit of data is preserved. MKV uses lossy compression — some data is permanently discarded to reduce file size. At high quality settings the difference is usually imperceptible, but the original data cannot be recovered.
Some metadata may not survive
Your AIFF file may contain ID3v2, AIFF chunks metadata. MKV has limited or no support for these metadata types. Location data (GPS), camera settings, and color profiles may be stripped during conversion.
What compression artifacts to expect
MKV lossy compression can produce codec-dependent. At the high quality settings CocoConvert uses by default, these are usually invisible to the eye. Lower quality settings trade visual fidelity for smaller file sizes.
About AIFF to MKV Conversion
AIFF or MKV — which format should you use? The answer depends on your needs. Here's a quick breakdown.
AIFF is Apple's uncompressed audio format — equivalent to WAV in quality. It has mostly universal platform support. MKV (Matroska) is an open container supporting virtually any codec, multiple audio tracks, and subtitles. It has mostly universal platform support.
Full Name: AIFF uses Audio Interchange File Format, while MKV uses Matroska Video. Compression: AIFF uses None (uncompressed), while MKV uses Lossy. Color Depth: AIFF uses —, while MKV uses 8–10 bits (codec dependent).
So when should you convert AIFF to MKV? This conversion is ideal when you Your AIFF file is too large for email attachments or upload limits, or when you You want to reduce storage usage without noticeably affecting quality. This conversion helps you reduce file size without visible quality loss.
MKV lossy compression can produce codec-dependent. At the high quality settings CocoConvert uses by default, these are usually invisible to the eye. Lower quality settings trade visual fidelity for smaller file sizes.
If you've decided MKV is the right choice, CocoConvert makes the conversion effortless. Upload your .aiff file, pick MKV, and click Convert — done in seconds. The converter runs on secure servers in Germany, powered by FFmpeg, Sharp, and qpdf. Files are encrypted via TLS and erased within 24 hours.
Free tier: 5 files/hour, 250 MB each. Pro: 100 files/hour, 5 GB each. Works in every modern browser on desktop and mobile.
How to Convert AIFF to MKV
- 1
Choose your AIFF file
Upload your .aiff file using drag-and-drop or the file browser. Batch mode lets you add multiple files.
- 2
Set format to MKV
Select .mkv from the output options. The converter applies optimal quality settings automatically.
- 3
Run the conversion
Click Convert. Server-side processing means your device stays fast — even for large audio files.
- 4
Get your MKV file
Download your converted file instantly. Batch downloads are available as a zip archive.
What Happens When You Convert AIFF to MKV
Your AIFF file is decoded and re-encoded as MKV.
Your AIFF file is uploaded and the format is validated
The file content is decoded into its raw representation
The data is re-encoded in MKV format with optimal settings
The converted file is ready for download
AIFF vs MKV — Detailed Comparison
| Feature | .AIFF | .MKV |
|---|---|---|
| Full Name | Audio Interchange File Format | Matroska Video |
| Compression | None (uncompressed) | Lossy |
| Color Depth | — | 8–10 bits (codec dependent) |
| HDR Support | — | Yes |
| Typical File Size | 10 MB per minute at 44.1 kHz/16-bit stereo | 50–200 MB per minute |
| Platform Support | Very Wide | Very Wide |
| Browser Support | Limited | Limited |
| Year Created | 1988 | 2002 |
| Open Standard | No | Yes |
Should You Convert AIFF to MKV?
When to Convert
- ✓You need just the audio track from a video recording
- ✓You're creating a podcast or audio file from video content
Frequently Asked Questions
Should I use AIFF or MKV?
It depends on your goal. AIFF preserves full quality. MKV offers smaller files via lossy compression. Choose based on whether file size or quality matters more for your use case.
Is MKV higher quality than AIFF?
Not necessarily. MKV lossy compression can produce codec-dependent. At the high quality settings CocoConvert uses by default, these are usually invisible to the eye. Lower quality settings trade visual fidelity for smaller file sizes. Quality depends on the compression type and settings, not just the format name.
Can I convert AIFF to MKV on Mac and Windows?
Yes. CocoConvert is a web-based tool that works in all modern browsers — Chrome, Safari, Firefox, Edge — on any operating system including macOS, Windows, Linux, iOS, and Android.
Is CocoConvert free for AIFF to MKV?
Yes. Free users get 5 conversions per hour (250 MB each). Pro subscribers unlock 100 files per hour, 5 GB per file, and priority processing.
What tools does CocoConvert use for AIFF to MKV?
CocoConvert uses FFmpeg for audio/video, Sharp for images, and qpdf for documents — the same open-source libraries used by Netflix, YouTube, and major enterprise platforms.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.