# SRS(Simple Realtime Server) ![](http://ossrs.net/gif/v1/sls.gif?site=github.com&path=/srs/4.0release) [![](https://circleci.com/gh/ossrs/srs/tree/4.0release.svg?style=svg&circle-token=1ef1d5b5b0cde6c8c282ed856a18199f9e8f85a9)](https://circleci.com/gh/ossrs/srs/tree/4.0release) [![](https://codecov.io/gh/ossrs/srs/branch/4.0release/graph/badge.svg)](https://codecov.io/gh/ossrs/srs/branch/4.0release) [![](https://cloud.githubusercontent.com/assets/2777660/22814959/c51cbe72-ef92-11e6-81cc-32b657b285d5.png)](https://github.com/ossrs/srs/wiki/v4_CN_Contact#wechat) SRS/4.0，[Leo][release4]，是一个简单高效的实时视频服务器，支持RTMP/WebRTC/HLS/HTTP-FLV/SRT/GB28181。 SRS is a simple, high efficiency and realtime video server, supports RTMP/WebRTC/HLS/HTTP-FLV/SRT/GB28181. SRS is licenced under [MIT][LICENSE], but some depended libraries are distributed using their [own licenses][LicenseMixing]. ## Usage Run SRS by [docker][docker-srs4], images is [here](https://hub.docker.com/r/ossrs/srs/tags) or [there](https://cr.console.aliyun.com/repository/cn-hangzhou/ossrs/srs/images), please set the CANDIDATE ([CN][v4_CN_WebRTC#config-candidate],[EN][v4_EN_WebRTC#config-candidate]) if WebRTC enabled: ```bash docker run --rm -it -p 1935:1935 -p 1985:1985 -p 8080:8080 \ --env CANDIDATE=$(ifconfig en0 inet| grep 'inet '|awk '{print $2}') -p 8000:8000/udp \ ossrs/srs:v4.0.117 ./objs/srs -c conf/srs.conf ``` Or build SRS from source(or [mirrors](#mirrors)), by CentOS7(or Linux([CN][v4_CN_Build],[EN][v4_EN_Build])): ``` git clone -b 4.0release https://gitee.com/ossrs/srs.git && cd srs/trunk && ./configure && make && ./objs/srs -c conf/srs.conf ``` Open [http://localhost:8080/](http://localhost:8080/) to check it, then publish [stream](https://github.com/ossrs/srs/blob/3.0release/trunk/doc/source.flv) by FFmpeg. It's also able to [publish by H5](http://localhost:8080/players/rtc_publisher.html?autostart=true) if WebRTC is enabled: ```bash docker run --rm -it --network=host ossrs/srs:encoder \ ffmpeg -re -i ./doc/source.flv -c copy -f flv -y rtmp://localhost/live/livestream ``` Play the following streams by [players](https://ossrs.net): * RTMP (by [VLC](https://www.videolan.org/)): rtmp://localhost/live/livestream * H5(HTTP-FLV): [http://localhost:8080/live/livestream.flv](http://localhost:8080/players/srs_player.html?autostart=true&stream=livestream.flv&port=8080&schema=http) * H5(HLS): [http://localhost:8080/live/livestream.m3u8](http://localhost:8080/players/srs_player.html?autostart=true&stream=livestream.m3u8&port=8080&schema=http) * H5(WebRTC): [webrtc://localhost/live/livestream](http://localhost:8080/players/rtc_player.html?autostart=true) From here, please read wikis: * [SRS 4.0 English Wiki][v4_EN_Home], please read Wiki first. * [SRS 4.0 中文Wiki][v4_CN_Home]，不读Wiki一定扑街，不读文档请不要提Issue，不读文档请不要提问题，任何文档中明确说过的疑问都不会解答。 Fast index for Wikis: * How to deliver RTMP streaming?([CN][v4_CN_SampleRTMP], [EN][v4_EN_SampleRTMP]) * How to build RTMP Edge-Cluster?([CN][v4_CN_SampleRTMPCluster], [EN][v4_EN_SampleRTMPCluster]) * How to build RTMP Origin-Cluster?([CN][v4_CN_SampleOriginCluster], [EN][v4_EN_SampleOriginCluster]) * How to deliver HTTP-FLV streaming?([CN][v4_CN_SampleHttpFlv], [EN][v4_EN_SampleHttpFlv]) * How to deliver HLS streaming?([CN][v4_CN_SampleHLS], [EN][v4_EN_SampleHLS]) * How to deliver low-latency streaming?([CN][v4_CN_SampleRealtime], [EN][v4_EN_SampleRealtime]) * How to use WebRTC? ([CN][v4_CN_WebRTC], [EN][v4_EN_WebRTC]) Other important wiki: * Usage: How to publish GB28181 to SRS? [#1500](https://github.com/ossrs/srs/issues/1500#issuecomment-606695679) * Usage: How to delivery DASH(Experimental)?([CN][v4_CN_SampleDASH], [EN][v4_EN_SampleDASH]) * Usage: How to transode RTMP stream by FFMPEG?([CN][v4_CN_SampleFFMPEG], [EN][v4_EN_SampleFFMPEG]) * Usage: How to delivery HTTP FLV Live Streaming Cluster?([CN][v4_CN_SampleHttpFlvCluster], [EN][v4_EN_SampleHttpFlvCluster]) * Usage: How to ingest file/stream/device to RTMP?([CN][v4_CN_SampleIngest], [EN][v4_EN_SampleIngest]) * Usage: How to forward stream to other servers?([CN][v4_CN_SampleForward], [EN][v4_EN_SampleForward]) * Usage: How to improve edge performance for multiple CPUs? ([CN][v4_CN_REUSEPORT], [EN][v4_EN_REUSEPORT]) * Usage: How to file a bug or contact us? ([CN][v4_CN_Contact], [EN][v4_EN_Contact]) ## Ports The ports used by SRS, kernel services: * tcp://1935, for RTMP live streaming server([CN][v4_CN_DeliveryRTMP],[EN][v4_EN_DeliveryRTMP]). * tcp://1985, HTTP API server, for HTTP-API([CN][v4_CN_HTTPApi], [EN][v4_EN_HTTPApi]), WebRTC([CN][v4_CN_WebRTC], [EN][v4_EN_WebRTC]), etc. * tcp://8080, HTTP live streaming server, HTTP-FLV([CN][v4_CN_SampleHttpFlv], [EN][v4_EN_SampleHttpFlv]), HLS([CN][v4_CN_SampleHLS], [EN][v4_EN_SampleHLS]) as such. * udp://8000, WebRTC Media([CN][v4_CN_WebRTC], [EN][v4_EN_WebRTC]) server. For optional HTTPS services, which might be provided by other web servers: * tcp://8088, HTTPS live streaming server. * tcp://1990, HTTPS API server. For optional stream caster services, to push streams to SRS: * udp://8935, Stream Caster: [Push MPEGTS over UDP](https://github.com/ossrs/srs/wiki/v4_CN_Streamer#push-mpeg-ts-over-udp) server. * tcp://554, Stream Caster: [Push RTSP](https://github.com/ossrs/srs/wiki/v4_CN_Streamer#push-rtsp-to-srs) server. * tcp://8936, Stream Caster: [Push HTTP-FLV](https://github.com/ossrs/srs/wiki/v4_CN_Streamer#push-http-flv-to-srs) server. * tcp://5060, Stream Caster: [Push GB28181 SIP](https://github.com/ossrs/srs/issues/1500#issuecomment-606695679) server. * udp://9000, Stream Caster: [Push GB28181 Media(bundle)](https://github.com/ossrs/srs/issues/1500#issuecomment-606695679) server. * udp://58200-58300, Stream Caster: [Push GB28181 Media(no-bundle)](https://github.com/ossrs/srs/issues/1500#issuecomment-606695679) server. * udp://10080, Stream Caster: [Push SRT Media](https://github.com/ossrs/srs/issues/1147#issuecomment-577469119) server. For external services to work with SRS: * udp://1989, [WebRTC Signaling](https://github.com/ossrs/signaling#usage) server. ## Features - [x] Using coroutine by ST, it's really simple and stupid enough. - [x] Support cluster which consists of origin ([CN][v4_CN_DeliveryRTMP],[EN][v4_EN_DeliveryRTMP]) and edge([CN][v4_CN_Edge], [EN][v4_EN_Edge]) server and uses RTMP as default transport protocol. - [x] Origin server supports remuxing RTMP to HTTP-FLV([CN][v4_CN_SampleHttpFlv], [EN][v4_EN_SampleHttpFlv]) and HLS([CN][v4_CN_DeliveryHLS], [EN][v4_EN_DeliveryHLS]). - [x] Edge server supports remuxing RTMP to HTTP-FLV([CN][v4_CN_SampleHttpFlv], [EN][v4_EN_SampleHttpFlv]). As for HLS([CN][v4_CN_DeliveryHLS], [EN][v4_EN_DeliveryHLS]) edge server, recomment to use HTTP edge server, such as [NGINX](http://nginx.org/). - [x] Support HLS with audio-only([CN][v4_CN_DeliveryHLS2], [EN][v4_EN_DeliveryHLS2]), which need to build the timestamp from AAC samples, so we enhanced it please read [#547][bug #547]. - [x] Support HLS with mp3(h.264+mp3) audio codec, please read [bug #301][bug #301]. - [x] Support transmux RTMP to HTTP-FLV/MP3/AAC/TS, please read wiki([CN][v4_CN_DeliveryHttpStream], [EN][v4_CN_DeliveryHttpStream]). - [x] Support ingesting([CN][v4_CN_Ingest], [EN][v4_EN_Ingest]) other protocols to SRS by FFMPEG. - [x] Support RTMP long time(>4.6hours) publishing/playing, with the timestamp corrected. - [x] Support native HTTP server([CN][v4_CN_SampleHTTP], [EN][v4_EN_SampleHTTP]) for http api and http live streaming. - [x] Support HTTP CORS for js in http api and http live streaming. - [x] Support HTTP API([CN][v4_CN_HTTPApi], [EN][v4_EN_HTTPApi]) for system management. - [x] Support HTTP callback([CN][v4_CN_HTTPCallback], [EN][v4_EN_HTTPCallback]) for authentication and integration. - [x] Support DVR([CN][v4_CN_DVR], [EN][v4_EN_DVR]) to record live streaming to FLV file. - [x] Support DVR control module like NGINX-RTMP, please read [#459][bug #459]. - [x] Support EXEC like NGINX-RTMP, please read [bug #367][bug #367]. - [x] Support security strategy including allow/deny publish/play IP([CN][v4_CN_Security], [EN][v4_EN_Security]). - [x] Support low latency(0.1s+) transport model, please read [bug #257][bug #257]. - [x] Support gop-cache([CN][v4_CN_LowLatency2], [EN][v4_EN_LowLatency2]) for player fast startup. - [x] Support Vhost([CN][v4_CN_RtmpUrlVhost], [EN][v4_EN_RtmpUrlVhost]) and \_\_defaultVhost\_\_. - [x] Support reloading([CN][v4_CN_Reload], [EN][v4_EN_Reload]) to apply changes of config. - [x] Support listening at multiple ports. - [x] Support forwarding([CN][v4_CN_Forward], [EN][v4_EN_Forward]) to other RTMP servers. - [x] Support transcoding([CN][v4_CN_FFMPEG], [EN][v4_EN_FFMPEG]) by FFMPEG. - [x] All wikis are writen in [Chinese][v4_CN_Home] and [English][v4_EN_Home]. - [x] Enhanced json, replace NXJSON(LGPL) with json-parser(BSD), read [#904][bug #904]. - [x] Support valgrind and latest ARM by patching ST, read [ST#1](https://github.com/ossrs/state-threads/issues/1) and [ST#2](https://github.com/ossrs/state-threads/issues/2). - [x] Support traceable and session-based log([CN][v4_CN_SrsLog], [EN][v4_EN_SrsLog]). - [x] High performance([CN][v4_CN_Performance], [EN][v4_EN_Performance]) RTMP/HTTP-FLV, 6000+ connections. - [x] Enhanced complex error code with description and stack, read [#913][bug #913]. - [x] Enhanced RTMP url which supports vhost in stream, read [#1059][bug #1059]. - [x] Support origin cluster, please read [#464][bug #464], [RTMP 302][bug #92]. - [x] Support listen at IPv4 and IPv6, read [#460][bug #460]. - [x] Improve test coverage for core/kernel/protocol/service. - [x] Support docker by [srs-docker](https://github.com/ossrs/srs-docker). - [x] Support multiple processes by ReusePort([CN][v4_CN_REUSEPORT], [EN][v4_EN_REUSEPORT]), [#775][bug #775]. - [x] Support a simple [mgmt console][console], please read [srs-ngb][srs-ngb]. - [x] [Experimental] Support playing stream by WebRTC, [#307][bug #307]. - [x] [Experimental] Support publishing stream by WebRTC, [#307][bug #307]. - [x] [Experimental] Support mux RTP/RTCP/DTLS/SRTP on one port for WebRTC, [#307][bug #307]. - [x] [Experimental] Support client address changing for WebRTC, [#307][bug #307]. - [x] [Experimental] Support transcode RTMP/AAC to WebRTC/Opus, [#307][bug #307]. - [x] [Experimental] Support AV1 codec for WebRTC, [#2324][bug #2324]. - [x] [Experimental] Enhance HTTP Stream Server for HTTP-FLV, HTTPS, HLS etc. [#1657][bug #1657]. - [x] [Experimental] Support push stream by GB28181, [#1500][bug #1500]. - [x] [Experimental] Support DVR in MP4 format, read [#738][bug #738]. - [x] [Experimental] Support MPEG-DASH, the future live streaming protocol, read [#299][bug #299]. - [x] [Experimental] Support pushing MPEG-TS over UDP, please read [bug #250][bug #250]. - [x] [Experimental] Support pushing FLV over HTTP POST, please read wiki([CN][v4_CN_Streamer2], [EN][v4_EN_Streamer2]). - [x] [Experimental] Support HTTP RAW API, please read [#459][bug #459], [#470][bug #470], [#319][bug #319]. - [x] [Experimental] Support SRT server, read [#1147][bug #1147]. - [x] [Deprecated] Support pushing RTSP, please read [bug #2304][bug #2304]. - [x] [Deprecated] Support Adobe HDS(f4m), please read wiki([CN][v4_CN_DeliveryHDS], [EN][v4_EN_DeliveryHDS]) and [#1535][bug #1535]. - [x] [Deprecated] Support bandwidth testing, please read [#1535][bug #1535]. - [x] [Deprecated] Support Adobe FMS/AMS token traverse([CN][v4_CN_DRM2], [EN][v4_EN_DRM2]) authentication, please read [#1535][bug #1535]. - [x] [Removed] Support RTMP client library: [srs-librtmp](https://github.com/ossrs/srs-librtmp). - [ ] Enhanced forwarding with vhost and variables, [#1342][bug #1342]. - [ ] Support DVR to Cloud Storage, [#1193][bug #1193]. - [ ] Support transmux RTC to RTMP, [#2093][bug #2093]. - [ ] Support H.265 over RTMP and HLS, [#465][bug #465]. - [ ] Support IETF-QUIC for WebRTC Cluster, [#2091][bug #2091]. - [ ] Improve RTC performance to 5K by multiple threading, [#2188][bug #2188]. - [ ] Support source cleanup for idle streams, [#413][bug #413]. - [ ] Support change user to run SRS, [#1111][bug #1111]. - [ ] Support HLS variant, [#463][bug #463]. > Remark: About the milestone and product plan, please read ([CN][v4_CN_Product], [EN][v4_EN_Product]) wiki. ## Changelogs Please read [CHANGELOG](CHANGELOG.md#chnagelog). ## Releases * 2021-04-28, [Release v3.0-r5][r3.0r5], 3.0 release5, 3.0.161, 122750 lines. * 2021-04-24, [Release v3.0-r4][r3.0r4], 3.0 release4, 3.0.160, 122750 lines. * 2021-01-02, [Release v3.0-r3][r3.0r3], 3.0 release3, 3.0.156, 122736 lines. * 2020-10-31, [Release v3.0-r2][r3.0r2], 3.0 release2, 3.0.153, 122663 lines. * 2020-10-10, [Release v3.0-r1][r3.0r1], 3.0 release1, 3.0.144, 122674 lines. * 2020-06-27, [Release v3.0-r0][r3.0r0], 3.0 release0, 3.0.141, 122674 lines. * 2020-03-29, [Release v3.0-b3][r3.0b4], 3.0 beta4, 3.0.139, 122674 lines. * 2020-03-18, [Release v3.0-b3][r3.0b3], 3.0 beta3, 3.0.134, 122509 lines. * 2020-03-05, [Release v3.0-b2][r3.0b2], 3.0 beta2, 3.0.123, 122170 lines. * 2020-02-14, [Release v3.0-b1][r3.0b1], 3.0 beta1, 3.0.117, 121964 lines. * 2020-02-02, [Release v3.0-b0][r3.0b0], 3.0 beta0, 3.0.112, 121709 lines. * 2020-01-21, [Release v3.0-a9][r3.0a9], 3.0 alpha9, 3.0.105, 121577 lines. * 2020-01-10, [Release v3.0-a8][r3.0a8], 3.0 alpha8, 3.0.97, 121555 lines. * 2019-12-29, [Release v3.0-a7][r3.0a7], 3.0 alpha7, 3.0.90, 116356 lines. * 2019-12-26, [Release v3.0-a6][r3.0a6], 3.0 alpha6, 3.0.85, 116056 lines. * 2019-12-19, [Release v3.0-a5][r3.0a5], 3.0 alpha5, 3.0.75, 115362 lines. * 2019-12-13, [Release v3.0-a4][r3.0a4], 3.0 alpha4, 3.0.71, 112928 lines. * 2019-11-30, [Release v3.0-a3][r3.0a3], 3.0 alpha3, 3.0.67, 110864 lines. * 2019-11-30, [Release v3.0-a2][r3.0a2], 3.0 alpha2, 3.0.66, 110831 lines. * 2019-10-07, [Release v3.0-a1][r3.0a1], 3.0 alpha1, 3.0.60, 107962 lines. * 2019-10-04, [Release v3.0-a0][r3.0a0], 3.0 alpha0, 3.0.56, 107946 lines. * 2017-03-03, [Release v2.0-r0][r2.0r0], 2.0 release0, 2.0.234, 86373 lines. * 2016-11-13, [Release v2.0-b3][r2.0b3], 2.0 beta3, 2.0.223, 86685 lines. * 2016-11-09, [Release v2.0-b2][r2.0b2], 2.0 beta2, 2.0.221, 86691 lines. * 2016-09-09, [Release v2.0-b1][r2.0b1], 2.0 beta1, 2.0.215, 89941 lines. * 2016-08-06, [Release v2.0-b0][r2.0b0], 2.0 beta0, 2.0.210, 89704 lines. * 2015-12-23, [Release v2.0-a3][r2.0a3], 2.0 alpha3, 2.0.205, 89544 lines. * 2015-10-08, [Release v2.0-a2][r2.0a2], 2.0 alpha2, 2.0.195, 89358 lines. * 2015-09-14, [Release v2.0-a1][r2.0a1], 2.0 alpha1, 2.0.189, 89269 lines. * 2015-08-23, [Release v2.0-a0][r2.0a0], 2.0 alpha0, 2.0.185, 89022 lines. * 2015-05-23, [Release v1.0-r4][r1.0r4], bug fixed, 1.0.32, 59509 lines. * 2015-03-19, [Release v1.0-r3][r1.0r3], bug fixed, 1.0.30, 59511 lines. * 2015-02-12, [Release v1.0-r2][r1.0r2], bug fixed, 1.0.27, 59507 lines. * 2015-01-15, [Release v1.0-r1][r1.0r1], bug fixed, 1.0.21, 59472 lines. * 2014-12-05, [Release v1.0-r0][r1.0r0], all bug fixed, 1.0.10, 59391 lines. * 2014-10-09, [Release v0.9.8][r1.0b0], all bug fixed, 1.0.0, 59316 lines. * 2014-08-03, [Release v0.9.7][r1.0a7], config utest, all bug fixed. 57432 lines. * 2014-07-13, [Release v0.9.6][r1.0a6], core/kernel/rtmp utest, refine bandwidth(as/js/srslibrtmp library). 50029 lines. * 2014-06-27, [Release v0.9.5][r1.0a5], refine perf 3k+ clients, edge token traverse, 30days online. 41573 lines. * 2014-05-28, [Release v0.9.4][r1.0a4], support heartbeat, tracable log, fix mem leak and bugs. 39200 lines. * 2014-05-18, [Release v0.9.3][r1.0a3], support mips, fms origin, json(http-api). 37594 lines. * 2014-04-28, [Release v0.9.2][r1.0a2], support [dvr][v4_CN_DVR], android, [edge][v4_CN_Edge]. 35255 lines. * 2014-04-07, [Release v0.9.1][r1.0a0], support [arm][v4_CN_SrsLinuxArm], [init.d][v4_CN_LinuxService], http [server][v4_CN_HTTPServer]/[api][v4_CN_HTTPApi], [ingest][v4_CN_SampleIngest]. 30000 lines. * 2013-12-25, [Release v0.9.0][r0.9], support bandwidth test, player/encoder/chat [demos][v4_CN_SampleDemo]. 20926 lines. * 2013-12-08, [Release v0.8.0][r0.8], support [http hooks callback][v4_CN_HTTPCallback], update [SB][srs-bench]. 19186 lines. * 2013-12-03, [Release v0.7.0][r0.7], support [live stream transcoding][v4_CN_FFMPEG]. 17605 lines. * 2013-11-29, [Release v0.6.0][r0.6], support [forward][v4_CN_Forward] stream to origin/edge. 16094 lines. * 2013-11-26, [Release v0.5.0][r0.5], support [HLS(m3u8)][v4_CN_DeliveryHLS], fragment and window. 14449 lines. * 2013-11-10, [Release v0.4.0][r0.4], support [reload][v4_CN_Reload] config, pause, longtime publish/play. 12500 lines. * 2013-11-04, [Release v0.3.0][r0.3], support [vhost][v4_CN_RtmpUrlVhost], refer, gop cache, listen multiple ports. 11773 lines. * 2013-10-25, [Release v0.2.0][r0.2], support [rtmp][v4_CN_RTMPHandshake] flash publish, h264, time jitter correct. 10125 lines. * 2013-10-23, [Release v0.1.0][r0.1], support [rtmp FMLE/FFMPEG publish][v4_CN_DeliveryRTMP], vp6. 8287 lines. * 2013-10-17, Created. ## Compare Comparing with other media servers, SRS is much better and stronger, for details please read Product([CN][v4_CN_Compare]/[EN][v4_EN_Compare]). ## Performance The performance benchmark data and corelative commits are listed here. * See also: [Performance for x86/x64 Test Guide][v4_CN_Performance]. * See also: [Performance for RaspberryPi][v4_CN_RaspberryPi]. * For multiple processes performance, read [#775: REUSEPORT][bug #775] or OriginCluster([CN][v4_EN_OriginCluster]/[EN][v4_EN_OriginCluster]) or [go-oryx][oryx]. * For RTC benchmark, please use [srs-bench](https://github.com/ossrs/srs-bench/tree/feature/rtc#usage). **Play RTMP benchmark** The data for playing RTMP was benchmarked by [SB][srs-bench]: | Update | SRS | Clients | Type | CPU | Memory | Commit | | ------------- | --------- | ------------- | ------------- | --------- | -------- | ------------ | | 2014-12-07 | 2.0.67 | 10k(10000) | players | 95% | 656MB | [code][p12] | | 2014-12-05 | 2.0.57 | 9.0k(9000) | players | 90% | 468MB | [code][p11] | | 2014-12-05 | 2.0.55 | 8.0k(8000) | players | 89% | 360MB | [code][p10] | | 2014-11-22 | 2.0.30 | 7.5k(7500) | players | 87% | 320MB | [code][p9] | | 2014-11-13 | 2.0.15 | 6.0k(6000) | players | 82% | 203MB | [code][p8] | | 2014-11-12 | 2.0.14 | 3.5k(3500) | players | 95% | 78MB | [code][p7] | | 2014-11-12 | 2.0.14 | 2.7k(2700) | players | 69% | 59MB | - | | 2014-11-11 | 2.0.12 | 2.7k(2700) | players | 85% | 66MB | - | | 2014-11-11 | 1.0.5 | 2.7k(2700) | players | 85% | 66MB | - | | 2014-07-12 | 0.9.156 | 2.7k(2700) | players | 89% | 61MB | [code][p6] | | 2014-07-12 | 0.9.156 | 1.8k(1800) | players | 68% | 38MB | - | | 2013-11-28 | 0.5.0 | 1.8k(1800) | players | 90% | 41M | - | | Update | SFU | Clients | Type | CPU | Memory | Threads | VM | | ---------- | ---------------- | -------- | ------------- | --------- | -------- | ------- | ---- | | 2021-05-11 | SRS/v4.0.105 | 4000 | players | ~94% x1 | 419MB | 1 | G5 8CPU | | 2021-05-11 | NginxRTMP/v1.2.1 | 2400 | players | ~92% x1 | 173MB | 1 | G5 8CPU | > Note: CentOS7, 600Kbps, [ECS/G5-2.5GHZ(SkyLake)](https://help.aliyun.com/document_detail/25378.html), > [SRS/v4.0.105](https://github.com/ossrs/srs/commit/2ad24b2313e88a85801deaea370204f225555939), > [NginxRTMP/v1.2.1](https://github.com/arut/nginx-rtmp-module/releases/tag/v1.2.1). **Publish RTMP benchmark** The data for publishing RTMP was benchmarked by [SB][srs-bench]: | Update | SRS | Clients | Type | CPU | Memory | Commit | | ------------- | --------- | ------------- | ------------- | --------- | -------- | ------------ | | 2014-12-04 | 2.0.52 | 4.0k(4000) | publishers | 80% | 331MB | [code][p5] | | 2014-12-04 | 2.0.51 | 2.5k(2500) | publishers | 91% | 259MB | [code][p4] | | 2014-12-04 | 2.0.49 | 2.5k(2500) | publishers | 95% | 404MB | [code][p3] | | 2014-12-04 | 2.0.49 | 1.4k(1400) | publishers | 68% | 144MB | - | | 2014-12-03 | 2.0.48 | 1.4k(1400) | publishers | 95% | 140MB | [code][p2] | | 2014-12-03 | 2.0.47 | 1.4k(1400) | publishers | 95% | 140MB | - | | 2014-12-03 | 2.0.47 | 1.2k(1200) | publishers | 84% | 76MB | [code][p1] | | 2014-12-03 | 2.0.12 | 1.2k(1200) | publishers | 96% | 43MB | - | | 2014-12-03 | 1.0.10 | 1.2k(1200) | publishers | 96% | 43MB | - | | Update | SFU | Clients | Type | CPU | Memory | Threads | VM | | ---------- | ---------------- | -------- | ------------- | --------- | -------- | ------- | ---- | | 2021-05-11 | SRS/v4.0.105 | 2300 | publishers | ~89% x1 | 1.1GB | 1 | G5 8CPU | | 2021-05-11 | NginxRTMP/v1.2.1 | 1300 | publishers | ~84% x1 | 198MB | 1 | G5 8CPU | > Note: CentOS7, 600Kbps, [ECS/G5-2.5GHZ(SkyLake)](https://help.aliyun.com/document_detail/25378.html), > [SRS/v4.0.105](https://github.com/ossrs/srs/commit/2ad24b2313e88a85801deaea370204f225555939), > [NginxRTMP/v1.2.1](https://github.com/arut/nginx-rtmp-module/releases/tag/v1.2.1). **Play HTTP FLV benchmark** The data for playing HTTP FLV was benchmarked by [SB][srs-bench]: | Update | SRS | Clients | Type | CPU | Memory | Commit | | ------------- | --------- | ------------- | ------------- | --------- | -------- | ------------ | | 2014-05-25 | 2.0.171 | 6.0k(6000) | players | 84% | 297MB | [code][p20] | | 2014-05-24 | 2.0.170 | 3.0k(3000) | players | 89% | 96MB | [code][p19] | | 2014-05-24 | 2.0.169 | 3.0k(3000) | players | 94% | 188MB | [code][p18] | | 2014-05-24 | 2.0.168 | 2.3k(2300) | players | 92% | 276MB | [code][p17] | | 2014-05-24 | 2.0.167 | 1.0k(1000) | players | 82% | 86MB | - | **RTC benchmark** The RTC benchmark data, by [srs-bench](https://github.com/ossrs/srs-bench/tree/feature/rtc#usage): | Update | SFU | Clients | Type | CPU | Memory | Threads | VM | | ---------- | ------------- | -------- | ------------- | --------- | -------- | ------- | ---- | | 2021-05-10 | SRS/v4.0.105 | 2000 | players | ~94% x1 | 462MB | 1 | G7 2CPU | | 2021-05-10 | SRS/v4.0.105 | 1000 | players | ~90% x1 | 180MB | 1 | G5 2CPU | | 2021-03-31 | SRS/v4.0.87 | 800 | players | ~94% x1 | 444MB | 1 | G5 2CPU | | 2021-05-10 | Janus/v0.11.1 | 700 | players | ~93% x2 | 430MB | 24 | G5 2CPU | | 2021-05-10 | SRS/v4.0.105 | 1700 | publishers | ~92% x1 | 334MB | 1 | G7 2CPU | | 2021-05-10 | SRS/v4.0.105 | 950 | publishers | ~92% x1 | 132MB | 1 | G5 2CPU | | 2021-03-31 | SRS/v4.0.87 | 550 | publishers | ~86% x1 | 1.3GB | 1 | G5 2CPU | | 2021-05-10 | Janus/v0.11.1 | 350 | publishers | ~93% x2 | 405MB | 23 | G5 2CPU | > Note: CentOS7, 600Kbps, [ECS/G5-2.5GHZ(SkyLake)/G7-2.7GHZ(IceLake)](https://help.aliyun.com/document_detail/25378.html), > [SRS/v4.0.87](https://github.com/ossrs/srs/commit/d6c16a7e236e03eba754c763e865464ec82d4516), > [SRS/v4.0.105](https://github.com/ossrs/srs/commit/2ad24b2313e88a85801deaea370204f225555939), > [Janus/v0.11.1](https://github.com/meetecho/janus-gateway/releases/tag/v0.11.1). **Latency benchmark** The latency between encoder and player with realtime config([CN][v4_CN_LowLatency], [EN][v4_EN_LowLatency]): | Update | SRS | Protocol | VP6 | H.264 | VP6+MP3 | H.264+MP3 | | ------------- | --------- | --------- | --------- | --------- | --------- | -------- | | 2014-12-16 | 2.0.72 | RTMP | 0.1s | 0.4s |[0.8s][p15]|[0.6s][p16]| | 2014-12-12 | 2.0.70 | RTMP |[0.1s][p13]|[0.4s][p14]| 1.0s | 0.9s | | 2014-12-03 | 1.0.10 | RTMP | 0.4s | 0.4s | 0.9s | 1.2s | | 2021-04-02 | 4.0.87 | WebRTC | x | 80ms | x | x | > 2018-08-05, [c45f72e](https://github.com/ossrs/srs/commit/c45f72ef7bac9c7cf85b9125fc9e3aafd53f396f), Refine HTTP-FLV latency, support realtime mode. 2.0.252 We used FMLE as encoder for benchmark. The latency of server was 0.1s+, and the bottleneck was the encoder. For more information, read [bug #257][bug #257-c0]. ## Architecture The stream architecture of SRS. ``` +----------+ +----------+ | Upstream | | Deliver | +---|------+ +----|-----+ +---+------------------+------+---------------------+----------------+ | Input | SRS(Simple RTMP Server) | Output | +----------------------+----------------------------+----------------+ | | +-> DASH ----------------+-> DASH player | | Encoder(1) | +-> RTMP/HDS -----------+-> Flash player | | (FMLE,OBS, --RTMP-+->-+-> HLS/HTTP ------------+-> M3U8 player | | FFmpeg,XSPLIT, | +-> FLV/MP3/Aac/Ts ------+-> HTTP player | | ......) | +-> Fowarder ------------+-> RTMP server | | | +-> Transcoder ----------+-> RTMP server | | | +-> EXEC(5) -------------+-> External app | | | +-> DVR -----------------+-> FLV file | | | +-> BandwidthTest -------+-> Flash | | | +-> WebRTC --------------+-> Flash | +----------------------+ | | | WebRTC Client | +--> RTMP | | | (H5,Native...) --RTC-+---+---> WebRTC ------------+-> WebRTC Client| +----------------------+ | | | MediaSource(2) | | | | (RTSP,FILE, | | | | HTTP,HLS, --pull-+->-- Ingester(3) -(rtmp)----+-> SRS | | Device, | | | | ......) | | | +----------------------+ | | | MediaSource(2) | | | | (MPEGTSoverUDP | | | | HTTP-FLV, --push-+->- StreamCaster(4) -(rtmp)-+-> SRS | | GB28181,SRT, | | | | ......) | | | +----------------------+ | | | FFMPEG --push(srt)--+->- SRTModule(5) ---(rtmp)-+-> SRS | +----------------------+----------------------------+----------------+ ``` Remark: 1. Encoder: Encoder pushs RTMP stream to SRS. 1. MediaSource: Supports any media source, ingesting by ffmpeg. 1. Ingester: Forks a ffmpeg(or other tools) to ingest as rtmp to SRS, please read [Ingest][v4_CN_Ingest]. 1. Streamer: Remuxs other protocols to RTMP, please read [Streamer][v4_CN_Streamer]. 1. EXEC: Like NGINX-RTMP, EXEC forks external tools for events, please read [ng-exec][v4_CN_NgExec]. 1. SRTModule: A isolate module which run in [hybrid](https://github.com/ossrs/srs/issues/1147#issuecomment-577574883) model. ## AUTHORS There are two types of people that have contributed to the SRS project: * Maintainers: Contribute and maintain important features. SRS always remembers and thanks you by writing your names in stream metadata. * [Contributors][authors]: Submit patches, report bugs, add translations, help answer newbie questions, and generally make SRS much better. Maintainers of SRS project: * [Winlin](https://github.com/winlinvip): All areas of streaming server and documents. * [Wenjie](https://github.com/wenjiegit): The focus of his work is on the [HDS](https://github.com/simple-rtmp-server/srs/wiki/v4_CN_DeliveryHDS) module. * [Runner365](https://github.com/runner365): The focus of his work is on the [SRT](https://github.com/simple-rtmp-server/srs/wiki/v4_CN_SRTWiki) module. * [John](https://github.com/xiaozhihong): Focus on [WebRTC](https://github.com/simple-rtmp-server/srs/wiki/v4_CN_WebRTC) module. * [B.P.Y(Bepartofyou)](https://github.com/Bepartofyou): Focus on [WebRTC](https://github.com/simple-rtmp-server/srs/wiki/v4_CN_WebRTC) module. * [Lixin](https://github.com/xialixin): Focus on [GB28181](https://github.com/ossrs/srs/issues/1500) module. * [Mozhan](https://github.com/lipeng19811218): Focus on [WebRTC](https://github.com/simple-rtmp-server/srs/wiki/v4_CN_WebRTC) module. * [Jinxue](https://github.com/chen-guanghua): Focus on [WebRTC](https://github.com/simple-rtmp-server/srs/wiki/v4_CN_WebRTC) module. A big THANK YOU goes to: * All friends of SRS for [big supports][bigthanks]. * Genes amd Mabbott for creating [st][st]([state-threads][st2]). * [Michael Talyanksy](https://github.com/michaeltalyansky) for introducing ST to us. ## Mirrors Gitee: [https://gitee.com/ossrs/srs][gitee], the GIT usage([CN][v4_CN_Git], [EN][v4_EN_Git]) ``` git clone https://gitee.com/ossrs/srs.git && cd srs && git remote set-url origin https://github.com/ossrs/srs.git && git pull ``` > Remark: For users in China, recomment to use mirror from CSDN or OSChina, because they are much faster. Gitlab: [https://gitlab.com/winlinvip/srs-gitlab][gitlab], the GIT usage([CN][v4_CN_Git], [EN][v4_EN_Git]) ``` git clone https://gitlab.com/winlinvip/srs-gitlab.git srs && cd srs && git remote set-url origin https://github.com/ossrs/srs.git && git pull ``` Github: [https://github.com/ossrs/srs][srs], the GIT usage([CN][v4_CN_Git], [EN][v4_EN_Git]) ``` git clone https://github.com/ossrs/srs.git ``` | Branch | Cost | Size | CMD | | --- | --- | --- | --- | | 3.0release | 2m19.931s | 262MB | git clone -b 3.0release https://gitee.com/ossrs/srs.git | | 3.0release | 0m56.515s | 95MB | git clone -b 3.0release --depth=1 https://gitee.com/ossrs/srs.git | | develop | 2m22.430s | 234MB | git clone -b develop https://gitee.com/ossrs/srs.git | | develop | 0m46.421s | 42MB | git clone -b develop --depth=1 https://gitee.com/ossrs/srs.git | | min | 2m22.865s | 217MB | git clone -b min https://gitee.com/ossrs/srs.git | | min | 0m36.472s | 11MB | git clone -b min --depth=1 https://gitee.com/ossrs/srs.git | ## System Requirements Supported operating systems and hardware: * Linux, with x86, x86-64 or arm. * Mac, with intel chip. * Other OS, such as Windows, please use [docker][docker-srs4]. Beijing, 2013.10
Winlin [p1]: https://github.com/ossrs/srs/commit/787ab674e38734ea8e0678101614fdcd84645dc8 [p2]: https://github.com/ossrs/srs/commit/f35ec2155b1408d528a9f37da7904c9625186bcf [p3]: https://github.com/ossrs/srs/commit/29324fab469e0f7cef9ad04ffdbce832ac7dd9ff [p4]: https://github.com/ossrs/srs/commit/f57801eb46c16755b173984b915a4166922df6a6 [p5]: https://github.com/ossrs/srs/commit/5589b13d2e216b91f97afb78ee0c011b2fccf7da [p6]: https://github.com/ossrs/srs/commit/1ae3e6c64cc5cee90e6050c26968ebc3c18281be [p7]: https://github.com/ossrs/srs/commit/8acd143a7a152885b815999162660fd4e7a3f247 [p8]: https://github.com/ossrs/srs/commit/cc6aca9ad55342a06440ce7f3b38453776b2b2d1 [p9]: https://github.com/ossrs/srs/commit/58136ec178e3d47db6c90a59875d7e40946936e5 [p10]: https://github.com/ossrs/srs/commit/58136ec178e3d47db6c90a59875d7e40946936e5 [p11]: https://github.com/ossrs/srs/commit/9ee138746f83adc26f0e236ec017f4d68a300004 [p12]: https://github.com/ossrs/srs/commit/1311b6fe6576fd7b9c6d299b0f8f2e8d202f4bf8 [p13]: https://github.com/ossrs/srs/commit/10297fab519811845b549a8af40a6bcbd23411e8 [p14]: https://github.com/ossrs/srs/commit/10297fab519811845b549a8af40a6bcbd23411e8 [p15]: https://github.com/ossrs/srs/commit/0d6b91039d408328caab31a1077d56a809b6bebc [p16]: https://github.com/ossrs/srs/commit/0d6b91039d408328caab31a1077d56a809b6bebc [p17]: https://github.com/ossrs/srs/commit/fc995473eb02c7cf64b5b212b456e11f34aa7984 [p18]: https://github.com/ossrs/srs/commit/960341b9b2b9646270ccfd113b4dd784d9826c73 [p19]: https://github.com/ossrs/srs/commit/4df19ba99a4e4d80cd89b304f9298d343497bec9 [p20]: https://github.com/ossrs/srs/commit/d12fc7fcc5b2e9e3c8ee5c7da01d0e41c8f8ca4a [p21]: https://github.com/ossrs/srs/commit/87519aaae835199e5adb60c0ae2c1cd24939448c [p22]: https://github.com/ossrs/srs/commit/5a4373d4835758188b9a1f03005cea0b6ddc62aa [p23]: https://github.com/ossrs/srs/pull/239 [pr #558]: https://github.com/ossrs/srs/pull/558 [pr #559]: https://github.com/ossrs/srs/pull/559 [authors]: https://github.com/ossrs/srs/blob/develop/AUTHORS.txt [bigthanks]: https://github.com/ossrs/srs/wiki/v4_CN_Product#bigthanks [st]: https://github.com/winlinvip/state-threads [st2]: https://github.com/ossrs/state-threads/tree/srs [state-threads]: https://github.com/ossrs/state-threads/tree/srs [nginx-rtmp]: https://github.com/arut/nginx-rtmp-module [http-parser]: https://github.com/joyent/http-parser [nginx]: http://nginx.org/ [FFMPEG]: http://ffmpeg.org/ [libx264]: http://www.videolan.org/ [srs]: https://github.com/ossrs/srs [csdn]: https://code.csdn.net/winlinvip/srs-csdn [gitee]: https://gitee.com/ossrs/srs [srs-dolphin]: https://github.com/ossrs/srs-dolphin [oryx]: https://github.com/ossrs/go-oryx [srs-bench]: https://github.com/ossrs/srs-bench [srs-ngb]: https://github.com/ossrs/srs-ngb [srs-librtmp]: https://github.com/ossrs/srs-librtmp [gitlab]: https://gitlab.com/winlinvip/srs-gitlab [console]: http://ossrs.net:1985/console [player]: http://ossrs.net/players/srs_player.html [modules]: https://github.com/ossrs/srs/blob/develop/trunk/modules/readme.txt [docker-srs3]: https://github.com/ossrs/srs-docker/tree/v3#usage [docker-srs4]: https://github.com/ossrs/srs-docker/tree/v4#usage [docker-dev]: https://github.com/ossrs/srs-docker/tree/dev#usage [v4_CN_Git]: https://github.com/ossrs/srs/wiki/v4_CN_Git [v4_EN_Git]: https://github.com/ossrs/srs/wiki/v4_EN_Git [v4_CN_SampleRTMP]: https://github.com/ossrs/srs/wiki/v4_CN_SampleRTMP [v4_EN_SampleRTMP]: https://github.com/ossrs/srs/wiki/v4_EN_SampleRTMP [v4_CN_SampleRTMPCluster]: https://github.com/ossrs/srs/wiki/v4_CN_SampleRTMPCluster [v4_EN_SampleRTMPCluster]: https://github.com/ossrs/srs/wiki/v4_EN_SampleRTMPCluster [v4_CN_SampleOriginCluster]: https://github.com/ossrs/srs/wiki/v4_CN_SampleOriginCluster [v4_EN_SampleOriginCluster]: https://github.com/ossrs/srs/wiki/v4_EN_SampleOriginCluster [v4_CN_SampleHLS]: https://github.com/ossrs/srs/wiki/v4_CN_SampleHLS [v4_EN_SampleHLS]: https://github.com/ossrs/srs/wiki/v4_EN_SampleHLS [v4_CN_SampleTranscode2HLS]: https://github.com/ossrs/srs/wiki/v4_CN_SampleTranscode2HLS [v4_EN_SampleTranscode2HLS]: https://github.com/ossrs/srs/wiki/v4_EN_SampleTranscode2HLS [v4_CN_SampleFFMPEG]: https://github.com/ossrs/srs/wiki/v4_CN_SampleFFMPEG [v4_EN_SampleFFMPEG]: https://github.com/ossrs/srs/wiki/v4_EN_SampleFFMPEG [v4_CN_SampleForward]: https://github.com/ossrs/srs/wiki/v4_CN_SampleForward [v4_EN_SampleForward]: https://github.com/ossrs/srs/wiki/v4_EN_SampleForward [v4_CN_SampleRealtime]: https://github.com/ossrs/srs/wiki/v4_CN_SampleRealtime [v4_EN_SampleRealtime]: https://github.com/ossrs/srs/wiki/v4_EN_SampleRealtime [v4_CN_WebRTC]: https://github.com/ossrs/srs/wiki/v4_CN_WebRTC [v4_EN_WebRTC]: https://github.com/ossrs/srs/wiki/v4_EN_WebRTC [v4_CN_WebRTC#config-candidate]: https://github.com/ossrs/srs/wiki/v4_CN_WebRTC#config-candidate [v4_EN_WebRTC#config-candidate]: https://github.com/ossrs/srs/wiki/v4_EN_WebRTC#config-candidate [v4_CN_SampleARM]: https://github.com/ossrs/srs/wiki/v4_CN_SampleARM [v4_EN_SampleARM]: https://github.com/ossrs/srs/wiki/v4_EN_SampleARM [v4_CN_SampleIngest]: https://github.com/ossrs/srs/wiki/v4_CN_SampleIngest [v4_EN_SampleIngest]: https://github.com/ossrs/srs/wiki/v4_EN_SampleIngest [v4_CN_SampleHTTP]: https://github.com/ossrs/srs/wiki/v4_CN_SampleHTTP [v4_EN_SampleHTTP]: https://github.com/ossrs/srs/wiki/v4_EN_SampleHTTP [v4_CN_SampleDemo]: https://github.com/ossrs/srs/wiki/v4_CN_SampleDemo [v4_EN_SampleDemo]: https://github.com/ossrs/srs/wiki/v4_EN_SampleDemo [v4_CN_OriginCluster]: https://github.com/ossrs/srs/wiki/v4_CN_OriginCluster [v4_EN_OriginCluster]: https://github.com/ossrs/srs/wiki/v4_EN_OriginCluster [v4_CN_REUSEPORT]: https://github.com/ossrs/srs/wiki/v4_CN_REUSEPORT [v4_EN_REUSEPORT]: 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