SRS – real-time media server

SRS (Simple Realtime Server) is a mature real-time media server designed for receiving, converting and distributing live audio and video streams.

It can sit between broadcasters, browsers, media players and downstream servers, handling the protocol differences between conventional live-streaming systems and low-latency WebRTC applications. This makes it useful for live broadcasting, interactive streaming, surveillance, conferencing infrastructure and other applications that need to deliver the same media through different transport mechanisms.

SRS is primarily designed for server deployment on Linux. It works with familiar tools such as FFmpeg and OBS Studio for publishing streams, while browsers and media players can consume the resulting streams using protocols appropriate to their environment.

This is free and open source software.

Key Features

• Supports RTMP, WebRTC, HLS, HTTP-FLV, HTTP-TS, SRT, MPEG-DASH and GB28181.
• Provides WHIP for publishing WebRTC streams and WHEP for WebRTC playback.
• Operates as a Selective Forwarding Unit for WebRTC workloads.
• Supports H.264 and H.265/HEVC video together with AAC and Opus audio.
• Converts between live-streaming and WebRTC workflows without requiring applications to implement each protocol separately.
• Provides built-in AAC-to-Opus and Opus-to-AAC conversion for bridging conventional streaming and WebRTC audio.
• Offers DVR recording to MP4 and FLV.
• Includes stream ingest, forwarding and snapshot facilities.
• Exposes an HTTP API for querying and controlling the server.
• Provides HTTP callbacks for authentication, stream events and integration with external applications.
• Includes Prometheus-compatible metrics and traceable logging for monitoring deployments.
• Supports origin and edge architectures for distributing streams across multiple servers.
• Provides HLS clustering for larger streaming deployments.
• Includes an embedded HTTP server for serving media and supporting application interfaces.
• Can be deployed directly on Linux or using containers.

Website: github.com/ossrs/srs
Support:
Developer: OSSRS Community
License: MIT License

SRS is written in C++. Learn C++ with our recommended free books and free tutorials.

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