Metastream
Metastream synchronizes streaming media across Chromium and Firefox, with sessions, chat, a shared queue, and host-managed playback permissions.
About Metastream
Metastream is a browser-based tool for watching streaming media with others at the same time. It works with Chromium and Firefox browsers and synchronizes playback across various websites.
Users can start public, private, and offline sessions and connect through WebRTC peer-to-peer connections. Sessions include real-time chat, a collaborative media queue, and timestamp cue points parsed from media descriptions. Playback includes auto-fullscreen of embedded media. The host manages per-user playback permissions and can remove other participants.
Website owners can add a watch party option by linking to Metastream with a media URL. As of August 2024, the project is no longer publishing under open source and is not accepting contributions, with version 0.10.4 available in the archive branch. It suits people who want synchronized viewing with chat and shared queue control.
Key features
- Synchronized playback of streaming media across websites
- Public, private, and offline sessions
- Real-time chat during sessions
- Collaborative media queue
- Per-user playback permissions managed by host
- WebRTC peer-to-peer connections
Best for: People using Chromium or Firefox who want to watch streaming media in sync with others.
Good for
- Supports Chromium and Firefox browsers
- Includes chat and collaborative queue
- Host controls for permissions and removing peers
Watch out for
- No longer publishing under open source as of August 2024
- Not accepting contributions
Metastream at a glance
- Category
- Software & Utilities › Media Players & Servers
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
Guides for Media Players & Servers
Metastream alternatives
Tools and sites you could use instead, ranked by how closely they match.
Watch videos in sync with friends using SyncWatch, a browser extension that lists support for Firefox, Chrome, and Opera.
Open source
24 alternatives
ff2mpv adds a browser action for opening the current page URL or a selected link in the mpv media player.
Run a self-hosted virtual browser in Docker with Neko, which uses WebRTC.
Open source
24 alternatives
H5player enhances audio and video playback on websites, with listed features including playback speed controls, screen capture, and downloads.
Open source
24 alternatives
FastStream replaces website video players with a custom browser player focused on buffering and accessibility features.
uView keeps supported online videos and local media visible in a small always-on-top window while you use other apps.
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Metastream FAQ
What is Metastream used for?
It synchronizes streaming media playback so multiple people can watch together. Sessions include chat and a shared media queue.
Which browsers does Metastream support?
It supports Chromium and Firefox browsers.
Is Metastream still open source?
As of August 2024, it is no longer publishing under open source and is not accepting contributions. Version 0.10.4 is available in the archive branch.
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