Convert AIFC to MKV — Free Online Converter
Convert AIFF-C Compressed Audio (.aifc) to Matroska Video (.mkv) online for free. Fast, secure audio conversion with no watermarks or registration....
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How to Convert
Upload your .aifc file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .mkv file when it's ready.
About AIFC to MKV Conversion
AIFC (AIFF-C) is Apple's legacy compressed audio format supporting IMA ADPCM, MACE 3:1/6:1, G.711, and uncompressed PCM. MKV (Matroska Video) is an open-source multimedia container with exceptional flexibility — it can hold virtually any audio, video, and subtitle codec combination. Matroska was designed with future-proofing in mind, supporting features like chapters, multiple audio tracks, and embedded fonts.
Converting AIFC to MKV produces an audio-only MKV file — the AIFC audio is decoded and re-encoded (or stream-copied as PCM) into the Matroska container without a video track. This is useful for audio workflows that leverage MKV's advanced features like chapter markers and multiple embedded audio streams.
Why Convert AIFC to MKV?
MKV's container flexibility makes it valuable for audio projects that need features unavailable in simpler audio containers. Multiple audio tracks (e.g., different languages or commentary), chapter markers, and custom metadata can all be embedded in a single MKV file. AIFC offers none of these capabilities.
MKV is also universally supported on Linux, Android, and cross-platform media players like VLC and mpv. AIFC has essentially zero support outside of legacy Mac OS. For complex audio projects or multi-platform delivery, MKV provides a modern, open-source container that any competent media player can handle.
Common Use Cases
- Creating multi-track audio files from separate AIFC recordings in a single MKV container
- Adding chapter markers to legacy AIFC audiobook recordings using MKV's chapter support
- Packaging AIFC audio with multiple language tracks for international distribution
- Converting AIFC audio for Linux-based media server environments that favor MKV
- Archiving AIFC audio in an open-source container with embedded metadata and integrity features
How It Works
FFmpeg decodes the AIFC container to raw PCM samples, then either stream-copies as PCM (lossless) or encodes to FLAC, AAC, Opus, or Vorbis within the MKV container. Matroska supports virtually any audio codec, so the choice depends on the use case. Chapter metadata can be added via an external chapters file. The MKV container uses variable-length integer encoding (EBML) for efficient storage and supports CRC-32 integrity checking on element clusters.
Quality & Performance
Quality depends entirely on the chosen audio codec inside MKV. PCM and FLAC inside MKV are lossless — zero quality difference from the AIFC PCM source. Opus at 128 kbps provides excellent quality at compact size. The MKV container itself is transparent and adds no quality penalty. For MACE-compressed AIFC sources, the original MACE quality is the limiting factor regardless of MKV codec choice.
Device Compatibility
| Device | AIFC | MKV |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No | No |
Recommended Settings by Platform
Spotify
Resolution: N/A
Bitrate: 320 kbps
OGG Vorbis preferred
Apple Music
Resolution: N/A
Bitrate: 256 kbps
AAC format required
SoundCloud
Resolution: N/A
Bitrate: 128 kbps
Lossless FLAC/WAV for best quality
Podcast
Resolution: N/A
Bitrate: 128 kbps
MP3 mono for spoken word
Tips for Best Results
- 1Use FLAC inside MKV for lossless archival with the added benefit of chapter markers and multiple tracks
- 2Choose Opus at 128 kbps inside MKV for excellent quality at minimal file size
- 3MKVToolNix can add chapter markers and merge multiple audio tracks after initial conversion
- 4For simple single-track audio, M4A or FLAC standalone containers are simpler choices than MKV
- 5Verify the target media player supports MKV audio-only files before committing to this format
AIFC to MKV wraps legacy Apple audio in a modern, open-source container with advanced features. The audio-only MKV file supports chapter markers, multiple tracks, and virtually any audio codec.