Convert Apple Lossless Audio Codec (.alac) to Matroska Video (.mkv) online for free. Fast, secure audio conversion with no watermarks or registration.
Upload your .m4a 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.
ALAC stores lossless audio in Apple's M4A container. MKV (Matroska Video) is the open-source multimedia container supporting virtually every audio codec. MKV is the standard for media servers like Plex, Jellyfin, and Kodi.
Converting ALAC to MKV wraps the audio in the Matroska container. MKV can hold FLAC, AAC, Opus, or even PCM, so the audio codec within MKV is chosen based on your needs.
MKV provides cross-platform multimedia support that M4A/ALAC lacks in non-Apple environments. Converting ALAC to MKV prepares the audio for media server libraries, muxing with video, or multi-track audio projects.
Using FLAC within MKV preserves lossless quality from the ALAC source. MKV supports chapters, multiple audio tracks, and rich metadata.
FFmpeg decodes ALAC to PCM and re-encodes to FLAC (lossless), AAC (compressed), or Opus (efficient compressed) within MKV. For lossless transfer, FLAC in MKV preserves every sample from the ALAC source. The Matroska EBML structure supports chapters, attachments, and rich tags.
FLAC in MKV from ALAC is perfectly lossless — bit-for-bit identical. AAC at 256 kbps from ALAC provides transparent quality. Opus at 128 kbps is excellent. The MKV container adds zero quality impact.
| Device | ALAC | MKV |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Native | Partial |
| iPhone/iPad | Native | Partial |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No |
Resolution: N/A
Bitrate: 320 kbps
OGG Vorbis preferred
Resolution: N/A
Bitrate: 256 kbps
AAC format required
Resolution: N/A
Bitrate: 128 kbps
Lossless FLAC/WAV for best quality
Resolution: N/A
Bitrate: 128 kbps
MP3 mono for spoken word
ALAC to MKV brings Apple lossless audio to the universal open-source container. Use FLAC within MKV for lossless archiving.
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| No |
| Tính năng | ALAC | MKV |
|---|---|---|
| Tên đầy đủ | Apple Lossless Audio Codec | Matroska Video |
| Phần mở rộng | .m4a | .mkv |
| Phù hợp nhất cho | Lossless | Multiple audio tracks |