MKA packages one or more audio tracks in the extensible Matroska container. Echoryte preserves an already validated .mka upload only when probing finds audio without a video stream.
Where this workflow fits
- Chaptered audio archives
- Alternate language tracks
- Long-form Matroska recordings
Audio-only Matroska is explicit
Matroska uses an EBML structure that can hold tracks, chapters, and metadata. For an audio-only upload, the validated .mka extension is retained; an unlabelled Matroska import is classified by whether video is actually present.
Use container context during review
Long audio anthologies may carry chapters and alternate programs. Check the selected track at every chapter transition and record language or commentary choices in the editing notes.
Before you upload
- Identify the intended track and language before separating an audio program from a larger archive.
- Verify chapter boundaries and the ending when the source was assembled from several recordings.
Limits worth knowing
- Several audio tracks can represent different languages, mixes, or commentary that require deliberate selection.
- Attachments, chapters, and tags provide context but do not prove that the intended speech track is decodable.
Questions from the workflow
How does MKA differ from MKV?
MKA is the audio-oriented Matroska extension. A video-bearing Matroska file is classified as MKV instead of being presented as an audio-only source.
Reviewed sources
- IANA Media Types registry · checked 2026-07-20
- RFC 9559: Matroska media types · checked 2026-07-20