SRS (Simple Realtime Server) is a simple, high efficiency and realtime video server, supports RTMP/WebRTC/HLS/HTTP-FLV/SRT. SRS is industrial-strength live streaming cluster, for the best conceptual integrity and the simplest implementation. SRS provides variety of inputs, for example, Push RTMP to SRS, Push RTSP/UDP/FLV to SRS, Pull Stream to SRS. SRS can transform the RTMP to other protocols or deliveries, for example, RTMP Transcode, Snapshot, Forward to Other Servers, Transmux to HTTP-FLV, Transmux to HLS, Transmux to HDS, Transmux SRT, DVR to FLV/MP4. SRS canbe used in CDN for large stream clusters, for example, RTMP Cluster、 OriginCluster, VHOST, Reload, HTTP-FLV Cluster.