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# SRS(Simple Realtime Server)
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![](http://ossrs.net/gif/v1/sls.gif?site=github.com& path=/srs/develop)
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[![ ](https://github.com/ossrs/srs/actions/workflows/codeql-analysis.yml/badge.svg?branch=develop )](https://github.com/ossrs/srs/actions?query=workflow%3ACodeQL+branch%3Adevelop)
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[![ ](https://github.com/ossrs/srs/actions/workflows/release.yml/badge.svg )](https://github.com/ossrs/srs/actions/workflows/release.yml?query=workflow%3ARelease)
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[![ ](https://github.com/ossrs/srs/actions/workflows/test.yml/badge.svg?branch=develop )](https://github.com/ossrs/srs/actions?query=workflow%3ATest+branch%3Adevelop)
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[![ ](https://codecov.io/gh/ossrs/srs/branch/develop/graph/badge.svg )](https://codecov.io/gh/ossrs/srs/branch/develop)
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[![ ](https://ossrs.net/wiki/images/wechat-badge4.svg )](../../wikis/Contact#wechat)
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[![ ](https://img.shields.io/twitter/follow/srs_server?style=social )](https://twitter.com/srs_server)
[![ ](https://badgen.net/discord/members/yZ4BnPmHAd )](https://discord.gg/yZ4BnPmHAd)
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[![ ](https://app.fossa.com/api/projects/git%2Bgithub.com%2Fossrs%2Fsrs.svg?type=small )](https://app.fossa.com/projects/git%2Bgithub.com%2Fossrs%2Fsrs?ref=badge_small)
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[![ ](https://ossrs.net/wiki/images/srs-faq.svg )](https://github.com/ossrs/srs/issues/2716)
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[![ ](https://badgen.net/badge/srs/stackoverflow/orange?icon=terminal )](https://stackoverflow.com/questions/tagged/simple-realtime-server)
[![ ](https://opencollective.com/srs-server/tiers/badge.svg )](https://opencollective.com/srs-server/contribute)
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[![ ](https://ossrs.net/wiki/images/mulan-incubating.svg )](http://mulanos.cn)
[![ ](https://img.shields.io/docker/pulls/ossrs/srs )](https://hub.docker.com/r/ossrs/srs/tags)
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SRS/5.0 is a simple, high efficiency and realtime video server, supports RTMP/WebRTC/HLS/HTTP-FLV/SRT.
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SRS/5.0, [Bee](https://github.com/ossrs/srs/wiki/Product#release50) 是一个简单高效的实时视频服务器, 支持RTMP/WebRTC/HLS/HTTP-FLV/SRT。
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SRS is licenced under [MIT ](https://github.com/ossrs/srs/blob/develop/LICENSE ) or [MulanPSL-2.0 ](https://spdx.org/licenses/MulanPSL-2.0.html ),
and note that [MulanPSL-2.0 is compatible with Apache-2.0 ](https://www.apache.org/legal/resolved.html#category-a ),
but some third-party libraries are distributed using their [own licenses ](https://github.com/ossrs/srs/wiki/LicenseMixing ).
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[![ ](https://mermaid.ink/img/pako:eNqNkkFP4zAQhf-K5TPBHOBSEBIkrXIItIqrckg4uPEktZTY1dgpWyH--9ppKsIuSMzBivXeG3_25J1WRgKd0bo1b9VOoCNZfltq4sv22wbFfkfQVcULbPN1TOJWgXb29eQIJRVC5ZTRn8FQ6U0R79B0wBbeUJs_d1tk92wuG2Bc1AIVAVe9ThLPwqkDFGrJ2YOWaJQ8q6DlP0RtcGZ-IdwhiE7p5vdooMOdsVgsuj00bPnIyQBH5ifBTqn2rTh6b3rDNlnM6jrsR_tqkOzPlAZVo3TBc06uL6_I8gB4UPA2xrmHboE8-yPJt9DrxwmHRfvZaOh7buObAv4PgZZE0WlqURSFGd5OlXz9tGI8XwdtfJAveppxtsg2bOK7Hx_jiy9uTS-5MygaGIBCMHngKUsT_lNoYxLCj9ZBN0SSTU7CWU-r62mCXtAOsBNK-v_zPeRL6nbQQUln_lNCLfrWlbTUH97a76VwMJfKs9BZLVoLF1T0zvCjrujMYQ9nU6KEH1A3uj7-Ah_g8P8 )](https://mermaid.live/edit#pako:eNqNkkFP4zAQhf-K5TPBHOBSEBIkrXIItIqrckg4uPEktZTY1dgpWyH--9ppKsIuSMzBivXeG3_25J1WRgKd0bo1b9VOoCNZfltq4sv22wbFfkfQVcULbPN1TOJWgXb29eQIJRVC5ZTRn8FQ6U0R79B0wBbeUJs_d1tk92wuG2Bc1AIVAVe9ThLPwqkDFGrJ2YOWaJQ8q6DlP0RtcGZ-IdwhiE7p5vdooMOdsVgsuj00bPnIyQBH5ifBTqn2rTh6b3rDNlnM6jrsR_tqkOzPlAZVo3TBc06uL6_I8gB4UPA2xrmHboE8-yPJt9DrxwmHRfvZaOh7buObAv4PgZZE0WlqURSFGd5OlXz9tGI8XwdtfJAveppxtsg2bOK7Hx_jiy9uTS-5MygaGIBCMHngKUsT_lNoYxLCj9ZBN0SSTU7CWU-r62mCXtAOsBNK-v_zPeRL6nbQQUln_lNCLfrWlbTUH97a76VwMJfKs9BZLVoLF1T0zvCjrujMYQ9nU6KEH1A3uj7-Ah_g8P8)
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> Note: The single node architecture for SRS, generally and major use scenario.
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[![SRS Overview ](https://ossrs.net/wiki/images/SRS-Overview-4.0.png )](https://ossrs.net/wiki/images/SRS-Overview-4.0.png)
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> Note: The cluster architecture for SRS. If image load fail, please see it at [here](https://www.processon.com/view/link/619f29791efad425fd699fd2).
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< a name = "product" > < / a >
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< a name = "usage-docker" > < / a >
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## Usage
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Build SRS from source:
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```
git clone -b develop https://gitee.com/ossrs/srs.git & &
cd srs/trunk & & ./configure & & make & & ./objs/srs -c conf/srs.conf
```
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Open [http://localhost:8080/ ](http://localhost:8080/ ) to check it, then publish
by [FFmpeg ](https://ffmpeg.org/download.html ) or [OBS ](https://obsproject.com/download ) as:
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```bash
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ffmpeg -re -i ./doc/source.flv -c copy -f flv -y rtmp://localhost/live/livestream
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```
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Play the following streams by [players ](https://ossrs.net ):
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* RTMP (by [VLC ](https://www.videolan.org/ )): rtmp://localhost/live/livestream
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* 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 )
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Note that if convert RTMP to WebRTC, please use [`rtmp2rtc.conf` ](https://github.com/ossrs/srs/issues/2728#issuecomment-964686152 ):
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* H5(WebRTC): [webrtc://localhost/live/livestream ](http://localhost:8080/players/rtc_player.html?autostart=true )
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> Note: Besides of FFmpeg or OBS, it's also able to [publish by H5](http://localhost:8080/players/rtc_publisher.html?autostart=true)
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> if **WebRTC([CN](https://github.com/ossrs/srs/wiki/v4_CN_WebRTC#rtc-to-rtmp), [EN](https://github.com/ossrs/srs/wiki/v4_EN_WebRTC#rtc-to-rtmp))** is enabled,
> please remember to set the **CANDIDATE([CN](https://github.com/ossrs/srs/wiki/v4_CN_WebRTC#config-candidate) or [EN](https://github.com/ossrs/srs/wiki/v4_EN_WebRTC#config-candidate))** for WebRTC.
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> Highly recommend that directly run SRS by
> **docker([CN](https://github.com/ossrs/srs/wiki/v4_CN_Home#docker) / [EN](https://github.com/ossrs/srs/wiki/v4_EN_Home#docker))**,
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> **Cloud Virtual Machine([CN](https://github.com/ossrs/srs/wiki/v4_CN_Home#cloud-virtual-machine) / [EN](https://github.com/ossrs/srs/wiki/v4_EN_Home#cloud-virtual-machine))**,
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> or **K8s([CN](https://github.com/ossrs/srs/wiki/v4_CN_Home#k8s) / [EN](https://github.com/ossrs/srs/wiki/v4_EN_Home#k8s))**,
> however it's also easy to build SRS from source code, for detail please see
> **Getting Started([CN](https://github.com/ossrs/srs/wiki/v4_CN_Home#getting-started) / [EN](https://github.com/ossrs/srs/wiki/v4_EN_Home#getting-started))**.
> Note: If need HTTPS, by which WebRTC and modern browsers require, please read
> **HTTPS API([CN](https://github.com/ossrs/srs/wiki/v4_CN_HTTPApi#https-api) / [EN](https://github.com/ossrs/srs/wiki/v4_EN_HTTPApi#https-api))**
> and **HTTPS Callback([CN](https://github.com/ossrs/srs/wiki/v4_CN_HTTPCallback#https-callback) / [EN](https://github.com/ossrs/srs/wiki/v4_EN_HTTPCallback#https-callback))**
> and **HTTPS Live Streaming([CN](https://github.com/ossrs/srs/wiki/v4_EN_DeliveryHttpStream#https-flv-live-stream) / [EN](https://github.com/ossrs/srs/wiki/v4_EN_DeliveryHttpStream#https-flv-live-stream))**,
> however HTTPS proxy also works perfect with SRS such as Nginx.
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< a name = "srs-40-wiki" > < / a >
< a name = "wiki" > < / a >
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From here, please read wikis:
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* [Getting Started ](https://github.com/ossrs/srs/wiki/v4_EN_Home#getting-started ), please read Wiki first.
* [中文文档:起步 ](https://github.com/ossrs/srs/wiki/v4_CN_Home#getting-started ), 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。
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Fast index for Wikis:
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* Overview? ([CN](https://github.com/ossrs/srs/wiki/v4_CN_Home), [EN ](https://github.com/ossrs/srs/wiki/v4_EN_Home ))
* How to deliver RTMP streaming?([CN](https://github.com/ossrs/srs/wiki/v4_CN_SampleRTMP), [EN ](https://github.com/ossrs/srs/wiki/v4_EN_SampleRTMP ))
* How to build RTMP Edge-Cluster?([CN](https://github.com/ossrs/srs/wiki/v4_CN_SampleRTMPCluster), [EN ](https://github.com/ossrs/srs/wiki/v4_EN_SampleRTMPCluster ))
* How to build RTMP Origin-Cluster?([CN](https://github.com/ossrs/srs/wiki/v4_CN_SampleOriginCluster), [EN ](https://github.com/ossrs/srs/wiki/v4_EN_SampleOriginCluster ))
* How to deliver HTTP-FLV streaming?([CN](https://github.com/ossrs/srs/wiki/v4_CN_SampleHttpFlv), [EN ](https://github.com/ossrs/srs/wiki/v4_EN_SampleHttpFlv ))
* How to deliver HLS streaming?([CN](https://github.com/ossrs/srs/wiki/v4_CN_SampleHLS), [EN ](https://github.com/ossrs/srs/wiki/v4_EN_SampleHLS ))
* How to deliver low-latency streaming?([CN](https://github.com/ossrs/srs/wiki/v4_CN_SampleRealtime), [EN ](https://github.com/ossrs/srs/wiki/v4_EN_SampleRealtime ))
* How to use WebRTC? ([CN](https://github.com/ossrs/srs/wiki/v4_CN_WebRTC), [EN ](https://github.com/ossrs/srs/wiki/v4_EN_WebRTC ))
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Other important wiki:
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* Usage: How to delivery DASH(Experimental)?([CN](https://github.com/ossrs/srs/wiki/v4_CN_SampleDASH), [EN ](https://github.com/ossrs/srs/wiki/v4_EN_SampleDASH ))
* Usage: How to transode RTMP stream by FFMPEG?([CN](https://github.com/ossrs/srs/wiki/v4_CN_SampleFFMPEG), [EN ](https://github.com/ossrs/srs/wiki/v4_EN_SampleFFMPEG ))
* Usage: How to delivery HTTP FLV Live Streaming Cluster?([CN](https://github.com/ossrs/srs/wiki/v4_CN_SampleHttpFlvCluster), [EN ](https://github.com/ossrs/srs/wiki/v4_EN_SampleHttpFlvCluster ))
* Usage: How to ingest file/stream/device to RTMP?([CN](https://github.com/ossrs/srs/wiki/v4_CN_SampleIngest), [EN ](https://github.com/ossrs/srs/wiki/v4_EN_SampleIngest ))
* Usage: How to forward stream to other servers?([CN](https://github.com/ossrs/srs/wiki/v4_CN_SampleForward), [EN ](https://github.com/ossrs/srs/wiki/v4_EN_SampleForward ))
* Usage: How to improve edge performance for multiple CPUs? ([CN](https://github.com/ossrs/srs/wiki/v4_CN_REUSEPORT), [EN ](https://github.com/ossrs/srs/wiki/v4_EN_REUSEPORT ))
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* Usage: How to file a bug or contact us? ([CN](https://github.com/ossrs/srs/wiki/v4_CN_Contact), [EN ](https://github.com/ossrs/srs/wiki/v4_EN_Contact ))
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## AUTHORS
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Thank you to all our contributors! 🙏
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[![ ](https://opencollective.com/srs-server/contributors.svg?width=800&button=false )](https://opencollective.com/srs-server/contribute)
> Note: You may provide financial support for this project by donating [via Open Collective](https://opencollective.com/srs-server/contribute). Thank you for your support!
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The [TOC(Technical Oversight Committee) ](trunk/AUTHORS.md#toc ), [Developers ](trunk/AUTHORS.md#developers ) and [contributors ](trunk/AUTHORS.md#contributors ):
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* [Winlin ](https://github.com/winlinvip ): Focus on [ST ](https://github.com/ossrs/state-threads ) and [Issues/PR ](https://github.com/ossrs/srs/issues ).
* [ZhaoWenjie ](https://github.com/wenjiegit ): Focus on [HDS ](https://github.com/simple-rtmp-server/srs/wiki/v4_CN_DeliveryHDS ) and [Windows ](https://github.com/ossrs/srs/issues/2532 ).
* [ShiWei ](https://github.com/runner365 ): Focus on [SRT ](https://github.com/simple-rtmp-server/srs/wiki/v4_CN_SRTWiki ) and [H.265 ](https://github.com/ossrs/srs/issues/465 ).
* [XiaoZhihong ](https://github.com/xiaozhihong ): Focus on [WebRTC/QUIC ](https://github.com/ossrs/srs/issues/2091 ) and [SRT ](https://github.com/simple-rtmp-server/srs/wiki/v4_CN_SRTWiki ).
* [WuPengqiang ](https://github.com/Bepartofyou ): Focus on [H.265 ](https://github.com/ossrs/srs/issues/465 ).
* [XiaLixin ](https://github.com/xialixin ): Focus on [GB28181 ](https://github.com/ossrs/srs/issues/1500 ).
* [LiPeng ](https://github.com/lipeng19811218 ): Focus on [WebRTC ](https://github.com/simple-rtmp-server/srs/wiki/v4_CN_WebRTC ).
* [ChenGuanghua ](https://github.com/chen-guanghua ): Focus on [WebRTC/QoS ](https://github.com/ossrs/srs/issues/2051 ).
* [ChenHaibo ](https://github.com/duiniuluantanqin ): Focus on [GB28181 ](https://github.com/ossrs/srs/issues/1500 ) and [API ](https://github.com/ossrs/srs/issues/1657 ).
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A big `THANK YOU` also goes to:
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* All [contributors ](trunk/AUTHORS.md#contributors ) of SRS.
* All friends of SRS for [big supports ](https://github.com/ossrs/srs/wiki/Product ).
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* [Genes ](http://sourceforge.net/users/genes ), [Mabbott ](http://sourceforge.net/users/mabbott ) and [Michael Talyanksy ](https://github.com/michaeltalyansky ) for creating and introducing [st ](https://github.com/ossrs/state-threads/tree/srs ).
## Contributing
We are grateful to the community for contributing bugfix and improvements, please follow the
[guide ](https://github.com/ossrs/srs/contribute ).
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## LICENSE
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[![FOSSA Status ](https://app.fossa.com/api/projects/git%2Bgithub.com%2Fossrs%2Fsrs.svg?type=small )](https://app.fossa.com/projects/git%2Bgithub.com%2Fossrs%2Fsrs?ref=badge_small)
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SRS is licenced under [MIT ](https://github.com/ossrs/srs/blob/develop/LICENSE ) or [MulanPSL-2.0 ](https://spdx.org/licenses/MulanPSL-2.0.html ),
and note that [MulanPSL-2.0 is compatible with Apache-2.0 ](https://www.apache.org/legal/resolved.html#category-a ),
but some third-party libraries are distributed using their [own licenses ](https://github.com/ossrs/srs/wiki/LicenseMixing ).
[![ ](https://app.fossa.com/api/projects/git%2Bgithub.com%2Fossrs%2Fsrs.svg?type=large )](https://app.fossa.com/projects/git%2Bgithub.com%2Fossrs%2Fsrs?ref=badge_large)
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## Releases
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* 2022-03-19, Release [v4.0-b10 ](https://github.com/ossrs/srs/releases/tag/v4.0-b10 ), v4.0-b10, 4.0 beta10, v4.0.251, 144665 lines.
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* 2022-02-15, Release [v4.0-b9 ](https://github.com/ossrs/srs/releases/tag/v4.0-b9 ), v4.0-b9, 4.0 beta9, v4.0.245, 144474 lines.
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* 2022-02-11, Release [v4.0-b8 ](https://github.com/ossrs/srs/releases/tag/v4.0-b8 ), v4.0-b8, 4.0 beta8, v4.0.241, 144445 lines.
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* 2022-02-09, Release [v4.0-b7 ](https://github.com/ossrs/srs/releases/tag/v4.0-b7 ), v4.0-b7, 4.0 beta7, v4.0.240, 144437 lines.
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* 2022-02-04, Release [v4.0-b6 ](https://github.com/ossrs/srs/releases/tag/v4.0-b6 ), v4.0-b6, 4.0 beta6, v4.0.238, 144437 lines.
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* 2022-01-30, Release [v4.0-b5 ](https://github.com/ossrs/srs/releases/tag/v4.0-b5 ), v4.0-b5, 4.0 beta5, v4.0.236, 144416 lines.
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* 2022-01-17, Release [v4.0-b4 ](https://github.com/ossrs/srs/releases/tag/v4.0-b4 ), v4.0-b4, 4.0 beta4, v4.0.230, 144393 lines.
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* 2022-01-13, Release [v4.0-b3 ](https://github.com/ossrs/srs/releases/tag/v4.0-b3 ), v4.0-b3, 4.0 beta3, v4.0.229, 144393 lines.
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* 2022-01-03, Release [v4.0-b2 ](https://github.com/ossrs/srs/releases/tag/v4.0-b2 ), v4.0-b2, 4.0 beta2, v4.0.215, 144278 lines.
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* 2021-12-19, Release [v4.0-b1 ](https://github.com/ossrs/srs/releases/tag/v4.0-b1 ), v4.0-b1, 4.0 beta1, v4.0.206, 144126 lines.
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* 2021-12-01, Release [v4.0-b0 ](https://github.com/ossrs/srs/releases/tag/v4.0-b0 ), v4.0-b0, 4.0 beta0, v4.0.201, 144022 lines.
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* 2021-11-15, Release [v4.0.198 ](https://github.com/ossrs/srs/releases/tag/v4.0.198 ), 4.0 dev8, v4.0.198, 144010 lines.
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* 2021-11-02, Release [v4.0.191 ](https://github.com/ossrs/srs/releases/tag/v4.0.191 ), 4.0 dev7, v4.0.191, 143890 lines.
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* 2021-10-12, Release [v4.0.177 ](https://github.com/ossrs/srs/releases/tag/v4.0.177 ), 4.0 dev6, v4.0.177, 143686 lines.
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* 2021-09-05, Release [v4.0.161 ](https://github.com/ossrs/srs/releases/tag/v4.0.161 ), 4.0 dev5, v4.0.161, 145865 lines.
* 2021-08-15, Release [v4.0.156 ](https://github.com/ossrs/srs/releases/tag/v4.0.156 ), 4.0 dev4, v4.0.156, 145490 lines.
* 2021-08-14, Release [v4.0.153 ](https://github.com/ossrs/srs/releases/tag/v4.0.153 ), 4.0 dev3, v4.0.153, 145506 lines.
* 2021-08-07, Release [v4.0.150 ](https://github.com/ossrs/srs/releases/tag/v4.0.150 ), 4.0 dev2, v4.0.150, 145289 lines.
* 2021-07-25, Release [v4.0.146 ](https://github.com/ossrs/srs/releases/tag/v4.0.146 ), 4.0 dev1, v4.0.146, 144026 lines.
* 2021-07-04, Release [v4.0.139 ](https://github.com/ossrs/srs/releases/tag/v4.0.139 ), 4.0 dev0, v4.0.139, 143245 lines.
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* 2020-06-27, [Release v3.0-r0 ](https://github.com/ossrs/srs/releases/tag/v3.0-r0 ), 3.0 release0, 3.0.141, 122674 lines.
* 2020-02-02, [Release v3.0-b0 ](https://github.com/ossrs/srs/releases/tag/v3.0-b0 ), 3.0 beta0, 3.0.112, 121709 lines.
* 2019-10-04, [Release v3.0-a0 ](https://github.com/ossrs/srs/releases/tag/v3.0-a0 ), 3.0 alpha0, 3.0.56, 107946 lines.
* 2017-03-03, [Release v2.0-r0 ](https://github.com/ossrs/srs/releases/tag/v2.0-r0 ), 2.0 release0, 2.0.234, 86373 lines.
* 2016-08-06, [Release v2.0-b0 ](https://github.com/ossrs/srs/releases/tag/v2.0-b0 ), 2.0 beta0, 2.0.210, 89704 lines.
* 2015-08-23, [Release v2.0-a0 ](https://github.com/ossrs/srs/releases/tag/v2.0-a0 ), 2.0 alpha0, 2.0.185, 89022 lines.
* 2014-12-05, [Release v1.0-r0 ](https://github.com/ossrs/srs/releases/tag/v1.0-r0 ), all bug fixed, 1.0.10, 59391 lines.
* 2014-10-09, [Release v0.9.8 ](https://github.com/ossrs/srs/releases/tag/v0.9.8 ), all bug fixed, 1.0.0, 59316 lines.
* 2014-04-07, [Release v0.9.1 ](https://github.com/ossrs/srs/releases/tag/v0.9.1 ), live streaming. 30000 lines.
* 2013-10-23, [Release v0.1.0 ](https://github.com/ossrs/srs/releases/tag/v0.1.0 ), rtmp. 8287 lines.
2017-01-04 03:46:22 +00:00
* 2013-10-17, Created.
2021-08-16 23:25:03 +00:00
## Features
Please read [FEATURES ](trunk/doc/Features.md#features ).
< a name = "history" > < / a >
< a name = "change-logs" > < / a >
## Changelog
Please read [CHANGELOG ](trunk/doc/CHANGELOG.md#changelog ).
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## Compare
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Comparing with other media servers, SRS is much better and stronger, for details please
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read Product([CN](https://github.com/ossrs/srs/wiki/v4_CN_Compare)/[EN](https://github.com/ossrs/srs/wiki/v4_EN_Compare)).
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## Performance
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Please read [PERFORMANCE ](trunk/doc/PERFORMANCE.md#performance ).
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## Architecture
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Please read [ARCHITECTURE ](trunk/doc/Architecture.md#architecture ).
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## Ports
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Please read [PORTS ](trunk/doc/Resources.md#ports ).
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## APIs
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Please read [APIS ](trunk/doc/Resources.md#apis ).
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## Mirrors
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Please read [MIRRORS ](trunk/doc/Resources.md#mirrors ).
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Beijing, 2013.10< br / >
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Winlin
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