SRS (Simple Realtime Server) | SRS | WarmIndex

SRS (Simple Realtime Server) is an open-source, high-efficiency, real-time media server supporting RTMP, WebRTC, HLS, HTTP-FLV, SRT, MPEG-DASH, GB28181, and more protocols for developers building live streaming and video platforms.

🚀 Overview

SRS is a simple, high-efficiency real-time media server that powers live streaming, video conferencing, and RTC applications with top performance and conceptual integrity.

What problem does this project solve? It addresses the need for a lightweight, high-performance streaming gateway that handles real-time protocols efficiently without async callback hell, scales in cloud environments, and supports modern codecs and architectures.

Who is it built for? Developers, teams, and businesses worldwide creating streaming platforms, media services, and real-time communication systems.

Why did you build it? SRS was created to foster a non-profit open-source community, enabling anyone to build high-quality video streaming and RTC solutions to boost their business.

✨ Key Features

Supports multiple protocols including RTMP, WebRTC, HLS, HTTP-FLV, HTTP-TS, SRT, MPEG-DASH, and GB28181 (what it does: enables flexible ingestion and playback; why matters: covers most live streaming needs)
Broad codec support: H.264, H.265, AV1, VP9, AAC, Opus, G.711 (ensures compatibility with modern encoders and players)
Cloud-native design with Docker, Kubernetes deployment, clustering, HTTP API, DVR, and transcoding (scales for production)
Optional: Runs on Linux/macOS, multiple architectures like x86_64, ARM, RISC-V; upcoming features in develop branch like proxy clusters

🛠 Tech Stack

Frontend: N/A (primarily server; some HTML/JS for players)
Backend: C++ (core), Go, JavaScript
Database: N/A
Auth: N/A
Hosting: Self-hosted, Docker, Kubernetes, Cloudflare Workers (via Oryx)

👥 Who Is This For?

This project is useful for:

Developers who want to build custom live streaming and RTC applications
Teams looking for scalable, high-performance media servers
Indie makers building video platforms and prototypes

📸 Screenshots / Demo

Live demo: https://ossrs.io (overview); Quick test: docker run --rm -it -p 1935:1935 -p 1985:1985 -p 8080:8080 ossrs/srs:6 then play RTMP at rtmp://localhost/live/livestream or HTTP-FLV at http://localhost:8080/live/livestream.flv
GitHub: https://github.com/ossrs/srs

🔥 Project Status

🟢 Actively building

Last updated: 2026-03-24

❓ FAQ

Is this project free?

Yes / Open Source (Apache 2.0 and MIT licenses; fully free for commercial use.)

Is the source code available?

Yes — https://github.com/ossrs/srs

Can I contribute?

Yes — Check the CONTRIBUTING.md guide, report issues, submit pull requests. Maintained by Winlin and community; join Discord for discussion.

📬 Contact & Links

Built with ❤️ and kept warm on WarmIndex.

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