Metastream Remote is a Firefox add-on designed for social and communication purposes, specifically in the realm of synchronized streaming. This subscription-based tool allows users to create sessions where they can watch videos and movies together in real-time, regardless of their physical locations. Users must have their own accounts on subscription services like Netflix to join a session, ensuring that all participants can enjoy the content simultaneously. The add-on facilitates control over video and audio playback, making it easy to pause, play, and navigate media as a group.

The functionality of Metastream Remote is enhanced through its ability to send messages to embedded websites, allowing for seamless interaction with media. Users can set playback states, monitor the current time in the video, and share the URL of the content being viewed. For those interested in the technical aspects, the source code of this extension is available for review, promoting transparency and community engagement.