MKV to AIFF Converter
Convert MKV to AIFF online for free. Fast, secure, and high-quality conversion with no sign-up or software required.
Maximum file size is 1GB
How it works
Three steps to your converted file
Everything happens in your browser tab - upload, pick a format, download. The heavy lifting runs on our servers.
Upload your file
Drag and drop, click to browse, or paste a URL. Batches take up to 20 files at once - 230+ input formats across video, audio, image, document, and archive types.
Choose an output format
Pick from over a hundred output formats. Filter by category or search by name - every option is open to everyone, no account needed.
Convert & download
Hit Convert and grab your download link moments later. Originals are erased when the job completes; results are cleared within about an hour.
What is an MKV file?
The Matroska Video (MKV) file is an open-standard, free container format capable of holding an unlimited number of video, audio, picture, or subtitle tracks in one file. Unlike proprietary containers, Matroska is structured upon Extensible Binary Meta Language (EBML), allowing for significant flexibility and forward compatibility. It supports a vast array of codecs, including H.264, VP9, HEVC, AAC, Vorbis, and FLAC, and is particularly noted for its support of soft subtitles (SSA/ASS) and chapter entries, making it a standard for high-definition video distribution (HD) and anime fansubs.
How to open an MKV file
Native support for MKV is available in Windows 10/11 via the Movies & TV app and generally on Linux distributions. macOS requires third-party software, as QuickTime Player does not natively parse the Matroska container. The industry-standard solution for all operating systems is VLC Media Player, which includes built-in libraries for decoding the diverse codecs often encapsulated within MKV files. Alternative options include MPV and MPC-HC (Windows).
MKV Technical Info
- Full Name
- Matroska Video Container
- Developed By
- Matroska (non-profit)
- Initial Release
- 2002
- MIME Type
- video/x-matroska
What is an AIFF file?
The AIFF (Audio Interchange File Format) is a lossless audio container format developed by Apple Inc., functioning as the standard uncompressed audio format for the Macintosh platform. Based on the EA IFF 85 standard, AIFF files store data in Pulse Code Modulation (PCM) format using big-endian byte ordering. It is functionally analogous to the WAV format used on Windows but differs in its header structure and byte sequence. AIFF is widely used in professional audio recording and editing due to its lack of compression artifacts and high-fidelity signal retention.
How to open an AIFF file
AIFF is the native uncompressed audio format for macOS, allowing files to be opened immediately in QuickTime, Apple Music, and Logic Pro. Windows users can open AIFF files using Windows Media Player, though some metadata may not render correctly. For professional manipulation or playback on Linux and Windows systems, VLC Media Player and Adobe Audition are the industry-standard recommendations, ensuring accurate interpretation of the big-endian PCM data streams.
AIFF Technical Info
- Full Name
- Audio Interchange File Format
- Developed By
- Apple Inc.
- Initial Release
- 1988
- MIME Type
- audio/x-aiff
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The fastest way to convert any file
Purpose-built for speed, privacy, and breadth of format support.
Convert MKV to AIFF in seconds
Every MKV to AIFF conversion runs on our servers, so your device stays fast and the output quality stays intact.
Fast, cloud-powered
No queue, no waiting. Files are processed on high-performance servers and returned in seconds, even for large files.
Secure & private
Encrypted in transit and never shared with anyone. Uploads are erased the moment your job completes, and results shortly after.
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Developer API
Convert MKV to AIFF via API
Automate MKV to AIFF conversions in three steps: create a job, upload your file, then poll for the result.
# 1. Create job
curl -X POST https://api.runconvert.com/v3/jobs \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"tag": "mkv-to-aiff",
"tasks": {
"upload-file": {
"operation": "import/upload"
},
"convert": {
"operation": "convert",
"input": "upload-file",
"output_format": "aiff"
},
"export-result": {
"operation": "export/url",
"input": "convert"
}
}
}'
# 2. Upload your file (use upload_url from the response)
curl -X PUT "$UPLOAD_URL" --upload-file input.mkv
# 3. Poll for result
curl https://api.runconvert.com/v3/jobs/$JOB_ID?include=tasks \
-H "Authorization: Bearer YOUR_API_KEY"Replace YOUR_API_KEY with your RunConvert API key. Get your free API key at runconvert.com/api.