audio/x-matroska is a audio media type commonly associated with .mka extensions.
Quick facts
What is audio/x-matroska
audio/x-matroska is one of the audio media types used on the internet. When serving this content over HTTP, set the Content-Type header in the response, for example:
Content-Type: audio/x-matroska
Related entities: associated extensions include .mka, and is delivered over HTTP via the Content-Type header, commonly with GET, POST, PUT and PATCH requests.
Related formats:
Relation chain
Related extensions
Related MIME types
Used with
Related headers
Related methods
Frequently asked questions
audio/x-matroska is a audio media type used to identify a content format; servers announce it to clients with the Content-Type header.
Extensions such as .mka are associated with this MIME type.
Send Content-Type: audio/x-matroska in the HTTP response.
Sources & standards
Updated 2026-08-18
Explore this reference