media-cache is a Firefox extension designed to enhance the media streaming experience by allowing users to cache and download content streamed via the MediaSource API. It provides a straightforward interface for users to add websites to the cache, following specific syntax guidelines for URLs. Users can cache videos and audio from various domains, such as example.com, with options for both HTTP and HTTPS.

The extension allows users to select specific media content from a popup menu after playback, facilitating easy downloads. While downloads typically initiate automatically when a video ends or a page closes, it is recommended to use the popup for reliable access. As an open-source tool, media-cache encourages responsible usage with respect to content ownership, making it a practical choice for those looking to manage their media efficiently.