# Architecture The architecture of SRS. > Note: Please read **Wiki: Gettting Started( [EN](https://github.com/ossrs/srs/wiki/v4_EN_Home#getting-started) / [CN](https://github.com/ossrs/srs/wiki/v4_CN_Home#getting-started) )** first. ## 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 | | 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. ## 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]. [authors]: https://github.com/ossrs/srs/blob/4.0release/trunk/AUTHORS.txt [bigthanks]: https://github.com/ossrs/srs/wiki/Product#release40 [st]: https://github.com/ossrs/state-threads [st2]: https://github.com/ossrs/state-threads/tree/srs [state-threads]: https://github.com/ossrs/state-threads/tree/srs [nginx]: http://nginx.org/ [srs]: https://github.com/ossrs/srs [gitee]: https://gitee.com/ossrs/srs [srs-bench]: https://github.com/ossrs/srs-bench [srs-ngb]: https://github.com/ossrs/srs-console [srs-librtmp]: https://github.com/ossrs/srs-librtmp [gitlab]: https://gitlab.com/winlinvip/srs-gitlab [console]: http://ossrs.net:8080/console [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]: https://github.com/ossrs/srs/wiki/v4_EN_REUSEPORT [v4_CN_Sample]: https://github.com/ossrs/srs/wiki/v4_CN_Sample [v4_EN_Sample]: https://github.com/ossrs/srs/wiki/v4_EN_Sample [v4_CN_Product]: https://github.com/ossrs/srs/wiki/v4_CN_Product [v4_EN_Product]: https://github.com/ossrs/srs/wiki/v4_EN_Product [v4_CN_Home]: https://github.com/ossrs/srs/wiki/v4_CN_Home [v4_EN_Home]: https://github.com/ossrs/srs/wiki/v4_EN_Home [v4_CN_Compare]: https://github.com/ossrs/srs/wiki/v4_CN_Compare [v4_EN_Compare]: https://github.com/ossrs/srs/wiki/v4_EN_Compare [v4_CN_Build]: https://github.com/ossrs/srs/wiki/v4_CN_Build [v4_EN_Build]: https://github.com/ossrs/srs/wiki/v4_EN_Build [v4_CN_Performance]: https://github.com/ossrs/srs/wiki/v4_CN_Performance [v4_EN_Performance]: https://github.com/ossrs/srs/wiki/v4_EN_Performance [v4_CN_DeliveryRTMP]: https://github.com/ossrs/srs/wiki/v4_CN_DeliveryRTMP [v4_EN_DeliveryRTMP]: https://github.com/ossrs/srs/wiki/v4_EN_DeliveryRTMP [v4_CN_Edge]: https://github.com/ossrs/srs/wiki/v4_CN_Edge [v4_EN_Edge]: https://github.com/ossrs/srs/wiki/v4_EN_Edge [v4_CN_RtmpUrlVhost]: https://github.com/ossrs/srs/wiki/v4_CN_RtmpUrlVhost [v4_EN_RtmpUrlVhost]: https://github.com/ossrs/srs/wiki/v4_EN_RtmpUrlVhost [v4_CN_RTMPHandshake]: https://github.com/ossrs/srs/wiki/v4_CN_RTMPHandshake [v4_EN_RTMPHandshake]: https://github.com/ossrs/srs/wiki/v4_EN_RTMPHandshake [v4_CN_HTTPServer]: https://github.com/ossrs/srs/wiki/v4_CN_HTTPServer [v4_EN_HTTPServer]: https://github.com/ossrs/srs/wiki/v4_EN_HTTPServer [v4_CN_DeliveryHLS]: https://github.com/ossrs/srs/wiki/v4_CN_DeliveryHLS [v4_EN_DeliveryHLS]: https://github.com/ossrs/srs/wiki/v4_EN_DeliveryHLS [v4_CN_DeliveryHLS2]: https://github.com/ossrs/srs/wiki/v4_CN_DeliveryHLS#hlsaudioonly [v4_EN_DeliveryHLS2]: https://github.com/ossrs/srs/wiki/v4_EN_DeliveryHLS#hlsaudioonly [v4_CN_Reload]: https://github.com/ossrs/srs/wiki/v4_CN_Reload [v4_EN_Reload]: https://github.com/ossrs/srs/wiki/v4_EN_Reload [v4_CN_LowLatency2]: https://github.com/ossrs/srs/wiki/v4_CN_LowLatency#gop-cache [v4_EN_LowLatency2]: https://github.com/ossrs/srs/wiki/v4_EN_LowLatency#gop-cache [v4_CN_Forward]: https://github.com/ossrs/srs/wiki/v4_CN_Forward [v4_EN_Forward]: https://github.com/ossrs/srs/wiki/v4_EN_Forward [v4_CN_FFMPEG]: https://github.com/ossrs/srs/wiki/v4_CN_FFMPEG [v4_EN_FFMPEG]: https://github.com/ossrs/srs/wiki/v4_EN_FFMPEG [v4_CN_HTTPCallback]: https://github.com/ossrs/srs/wiki/v4_CN_HTTPCallback [v4_EN_HTTPCallback]: https://github.com/ossrs/srs/wiki/v4_EN_HTTPCallback [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_SrsLinuxArm]: https://github.com/ossrs/srs/wiki/v4_CN_SrsLinuxArm [v4_EN_SrsLinuxArm]: https://github.com/ossrs/srs/wiki/v4_EN_SrsLinuxArm [v4_CN_LinuxService]: https://github.com/ossrs/srs/wiki/v4_CN_LinuxService [v4_EN_LinuxService]: https://github.com/ossrs/srs/wiki/v4_EN_LinuxService [v4_CN_RTMP-ATC]: https://github.com/ossrs/srs/wiki/v4_CN_RTMP-ATC [v4_EN_RTMP-ATC]: https://github.com/ossrs/srs/wiki/v4_EN_RTMP-ATC [v4_CN_HTTPApi]: https://github.com/ossrs/srs/wiki/v4_CN_HTTPApi [v4_EN_HTTPApi]: https://github.com/ossrs/srs/wiki/v4_EN_HTTPApi [v4_CN_Ingest]: https://github.com/ossrs/srs/wiki/v4_CN_Ingest [v4_EN_Ingest]: https://github.com/ossrs/srs/wiki/v4_EN_Ingest [v4_CN_DVR]: https://github.com/ossrs/srs/wiki/v4_CN_DVR [v4_EN_DVR]: https://github.com/ossrs/srs/wiki/v4_EN_DVR [v4_CN_SrsLog]: https://github.com/ossrs/srs/wiki/v4_CN_SrsLog [v4_EN_SrsLog]: https://github.com/ossrs/srs/wiki/v4_EN_SrsLog [v4_CN_DRM2]: https://github.com/ossrs/srs/wiki/v4_CN_DRM#tokentraverse [v4_EN_DRM2]: https://github.com/ossrs/srs/wiki/v4_EN_DRM#tokentraverse [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_FlvVodStream]: https://github.com/ossrs/srs/wiki/v4_CN_FlvVodStream [v4_EN_FlvVodStream]: https://github.com/ossrs/srs/wiki/v4_EN_FlvVodStream [v4_CN_Security]: https://github.com/ossrs/srs/wiki/v4_CN_Security [v4_EN_Security]: https://github.com/ossrs/srs/wiki/v4_EN_Security [v4_CN_DeliveryHttpStream]: https://github.com/ossrs/srs/wiki/v4_CN_DeliveryHttpStream [v4_EN_DeliveryHttpStream]: https://github.com/ossrs/srs/wiki/v4_EN_DeliveryHttpStream [v4_CN_DeliveryHDS]: https://github.com/ossrs/srs/wiki/v4_CN_DeliveryHDS [v4_EN_DeliveryHDS]: https://github.com/ossrs/srs/wiki/v4_EN_DeliveryHDS [v4_CN_Streamer]: https://github.com/ossrs/srs/wiki/v4_CN_Streamer [v4_EN_Streamer]: https://github.com/ossrs/srs/wiki/v4_EN_Streamer [v4_CN_Streamer2]: https://github.com/ossrs/srs/wiki/v4_CN_Streamer#push-http-flv-to-srs [v4_EN_Streamer2]: https://github.com/ossrs/srs/wiki/v4_EN_Streamer#push-http-flv-to-srs [v4_CN_SampleHttpFlv]: https://github.com/ossrs/srs/wiki/v4_CN_SampleHttpFlv [v4_EN_SampleHttpFlv]: https://github.com/ossrs/srs/wiki/v4_EN_SampleHttpFlv [v4_CN_SampleHttpFlvCluster]: https://github.com/ossrs/srs/wiki/v4_CN_SampleHttpFlvCluster [v4_EN_SampleHttpFlvCluster]: https://github.com/ossrs/srs/wiki/v4_EN_SampleHttpFlvCluster [v4_CN_SampleDASH]:https://github.com/ossrs/srs/wiki/v4_CN_SampleDASH [v4_EN_SampleDASH]:https://github.com/ossrs/srs/wiki/v4_EN_SampleDASH [bug #547]: https://github.com/ossrs/srs/issues/547 [bug #301]: https://github.com/ossrs/srs/issues/301 [bug #459]: https://github.com/ossrs/srs/issues/459 [bug #367]: https://github.com/ossrs/srs/issues/367 [bug #257]: https://github.com/ossrs/srs/issues/257 [bug #904]: https://github.com/ossrs/srs/issues/904 [bug #913]: https://github.com/ossrs/srs/issues/913 [bug #1059]: https://github.com/ossrs/srs/issues/1059 [bug #92]: https://github.com/ossrs/srs/issues/92 [bug #464]: https://github.com/ossrs/srs/issues/464 [bug #460]: https://github.com/ossrs/srs/issues/460 [bug #775]: https://github.com/ossrs/srs/issues/775 [bug #307]: https://github.com/ossrs/srs/issues/307 [bug #2324]: https://github.com/ossrs/srs/issues/2324 [bug #1657]: https://github.com/ossrs/srs/issues/1657 [bug #1500]: https://github.com/ossrs/srs/issues/1500 [bug #738]: https://github.com/ossrs/srs/issues/738 [bug #299]: https://github.com/ossrs/srs/issues/299 [bug #250]: https://github.com/ossrs/srs/issues/250 [bug #459]: https://github.com/ossrs/srs/issues/459 [bug #470]: https://github.com/ossrs/srs/issues/470 [bug #319]: https://github.com/ossrs/srs/issues/319 [bug #1147]: https://github.com/ossrs/srs/issues/1147 [bug #2304]: https://github.com/ossrs/srs/issues/2304 [bug #1535]: https://github.com/ossrs/srs/issues/1535 [bug #1342]: https://github.com/ossrs/srs/issues/1342 [bug #1193]: https://github.com/ossrs/srs/issues/1193 [bug #2093]: https://github.com/ossrs/srs/issues/2093 [bug #465]: https://github.com/ossrs/srs/issues/465 [bug #2091]: https://github.com/ossrs/srs/issues/2091 [bug #2188]: https://github.com/ossrs/srs/issues/2188 [bug #413]: https://github.com/ossrs/srs/issues/413 [bug #1111]: https://github.com/ossrs/srs/issues/1111 [bug #463]: https://github.com/ossrs/srs/issues/463 [bug #775]: https://github.com/ossrs/srs/issues/775 [bug #257-c0]: https://github.com/ossrs/srs/issues/257#issuecomment-66864413 [r3.0r5]: https://github.com/ossrs/srs/releases/tag/v3.0-r5 [r3.0r4]: https://github.com/ossrs/srs/releases/tag/v3.0-r4 [r3.0r3]: https://github.com/ossrs/srs/releases/tag/v3.0-r3 [r3.0r2]: https://github.com/ossrs/srs/releases/tag/v3.0-r2 [r3.0r1]: https://github.com/ossrs/srs/releases/tag/v3.0-r1 [r3.0r0]: https://github.com/ossrs/srs/releases/tag/v3.0-r0 [r3.0b4]: https://github.com/ossrs/srs/releases/tag/v3.0-b4 [r3.0b3]: https://github.com/ossrs/srs/releases/tag/v3.0-b3 [r3.0b2]: https://github.com/ossrs/srs/releases/tag/v3.0-b2 [r3.0b1]: https://github.com/ossrs/srs/releases/tag/v3.0-b1 [r3.0b0]: https://github.com/ossrs/srs/releases/tag/v3.0-b0 [r3.0a9]: https://github.com/ossrs/srs/releases/tag/v3.0-a9 [r3.0a8]: https://github.com/ossrs/srs/releases/tag/v3.0-a8 [r3.0a7]: https://github.com/ossrs/srs/releases/tag/v3.0-a7 [r3.0a6]: https://github.com/ossrs/srs/releases/tag/v3.0-a6 [r3.0a5]: https://github.com/ossrs/srs/releases/tag/v3.0-a5 [r3.0a4]: https://github.com/ossrs/srs/releases/tag/v3.0-a4 [r3.0a3]: https://github.com/ossrs/srs/releases/tag/v3.0-a3 [r3.0a2]: https://github.com/ossrs/srs/releases/tag/v3.0-a2 [r3.0a1]: https://github.com/ossrs/srs/releases/tag/v3.0-a1 [r3.0a0]: https://github.com/ossrs/srs/releases/tag/v3.0-a0 [r2.0r8]: https://github.com/ossrs/srs/releases/tag/v2.0-r8 [r2.0r7]: https://github.com/ossrs/srs/releases/tag/v2.0-r7 [r2.0r6]: https://github.com/ossrs/srs/releases/tag/v2.0-r6 [r2.0r5]: https://github.com/ossrs/srs/releases/tag/v2.0-r5 [r2.0r4]: https://github.com/ossrs/srs/releases/tag/v2.0-r4 [r2.0r3]: https://github.com/ossrs/srs/releases/tag/v2.0-r3 [r2.0r2]: https://github.com/ossrs/srs/releases/tag/v2.0-r2 [r2.0r1]: https://github.com/ossrs/srs/releases/tag/v2.0-r1 [r2.0r0]: https://github.com/ossrs/srs/releases/tag/v2.0-r0 [r2.0b4]: https://github.com/ossrs/srs/releases/tag/v2.0-b4 [r2.0b3]: https://github.com/ossrs/srs/releases/tag/v2.0-b3 [r2.0b2]: https://github.com/ossrs/srs/releases/tag/v2.0-b2 [r2.0b1]: https://github.com/ossrs/srs/releases/tag/v2.0-b1 [r2.0b0]: https://github.com/ossrs/srs/releases/tag/v2.0-b0 [r2.0a3]: https://github.com/ossrs/srs/releases/tag/v2.0-a3 [r2.0a2]: https://github.com/ossrs/srs/releases/tag/v2.0-a2 [r2.0a1]: https://github.com/ossrs/srs/releases/tag/v2.0-a1 [r2.0a0]: https://github.com/ossrs/srs/releases/tag/v2.0-a0 [r1.0r4]: https://github.com/ossrs/srs/releases/tag/v1.0-r4 [r1.0r3]: https://github.com/ossrs/srs/releases/tag/v1.0-r3 [r1.0r2]: https://github.com/ossrs/srs/releases/tag/v1.0-r2 [r1.0r1]: https://github.com/ossrs/srs/releases/tag/v1.0-r1 [r1.0r0]: https://github.com/ossrs/srs/releases/tag/v1.0-r0 [r1.0b0]: https://github.com/ossrs/srs/releases/tag/v0.9.8 [r1.0a7]: https://github.com/ossrs/srs/releases/tag/v0.9.7 [r1.0a6]: https://github.com/ossrs/srs/releases/tag/v0.9.6 [r1.0a5]: https://github.com/ossrs/srs/releases/tag/v0.9.5 [r1.0a4]: https://github.com/ossrs/srs/releases/tag/v0.9.4 [r1.0a3]: https://github.com/ossrs/srs/releases/tag/v0.9.3 [r1.0a2]: https://github.com/ossrs/srs/releases/tag/v0.9.2 [r1.0a0]: https://github.com/ossrs/srs/releases/tag/v0.9.1 [r0.9]: https://github.com/ossrs/srs/releases/tag/v0.9.0 [r0.8]: https://github.com/ossrs/srs/releases/tag/v0.8.0 [r0.7]: https://github.com/ossrs/srs/releases/tag/v0.7.0 [r0.6]: https://github.com/ossrs/srs/releases/tag/v0.6.0 [r0.5]: https://github.com/ossrs/srs/releases/tag/v0.5.0 [r0.4]: https://github.com/ossrs/srs/releases/tag/v0.4.0 [r0.3]: https://github.com/ossrs/srs/releases/tag/v0.3.0 [r0.2]: https://github.com/ossrs/srs/releases/tag/v0.2.0 [r0.1]: https://github.com/ossrs/srs/releases/tag/v0.1.0 [v4_CN_Contact]: https://github.com/ossrs/srs/wiki/v4_CN_Contact [v4_EN_Contact]: https://github.com/ossrs/srs/wiki/v4_EN_Contact [LICENSE]: https://github.com/ossrs/srs/blob/4.0release/LICENSE [LicenseMixing]: https://ossrs.net/lts/zh-cn/license [release2]: https://github.com/ossrs/srs/wiki/v4_CN_Product#release20 [release3]: https://github.com/ossrs/srs/wiki/v4_CN_Product#release30 [release4]: https://github.com/ossrs/srs/wiki/v4_CN_Product#release40