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GVP夏楚 / ZLMediaKit

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A lightweight ,high performance and stable stream server and client framework based on C++11.

license C++ platform PRs Welcome Build Status

Why ZLMediaKit?

  • Developed based on C++ 11, the code is stable and reliable, avoiding the use of raw pointers, cross-platform porting is simple and convenient, and the code is clear and concise.
  • Support rich streaming media protocols(RTSP/RTMP/HLS/HTTP-FLV/WebSocket-flv/HTTP-TS/WebSocket-TS/HTTP-fMP4/Websocket-fMP4/MP4/WebRTC),and support Inter-protocol conversion.
  • Multiplexing asynchronous network IO based on epoll and multi thread,extreme performance.
  • Well performance and stable test,can be used commercially.
  • Support linux, macos, ios, android, Windows Platforms.
  • Very low latency(lower then one second), video opened immediately.


  • RTSP[S]

    • RTSP[S] server,support rtsp push.
    • RTSP[S] player and pusher.
    • RTP Transport : rtp over udp rtp over tcp rtp over http rtp udp multicast .
    • Basic/Digest/Url Authentication.
    • H265/H264/AAC/G711/OPUS codec.
    • Recorded as mp4.
    • Vod of mp4.
  • RTMP[S]

    • RTMP[S] server,support player and pusher.
    • RTMP[S] player and pusher.
    • Support HTTP-FLV/WebSocket-FLV sever.
    • H265/H264/AAC/G711/OPUS codec.
    • Recorded as flv or mp4.
    • Vod of mp4.
    • support RTMP-H265
  • HLS

    • RTSP RTMP can be converted into HLS,built-in HTTP server.
    • Play authentication based on cookie.
    • Support HLS player, support streaming HLS proxy to RTSP / RTMP / MP4.
  • TS

    • Support HTTP-TS/WebSocket-TS sever.
  • fMP4

    • Support HTTP-fMP4/WebSocket-fMP4 sever.
  • HTTP[S]

    • HTTP server,suppor directory meun、RESTful http api.
    • HTTP client,downloader,uploader,and http api requester.
    • Cookie supported.
    • WebSocket Server and Client.
    • File access authentication.
  • WebRTC(experiential)

    • Support webrtc push stream and transfer to other protocols
    • Support webrtc play, support other protocol to webrtc
    • Support simulcast
    • Support rtx/nack
    • Support transport-cc rtcp/rtp ext
  • SRT support

  • Others

    • Support stream proxy by ffmpeg.
    • RESTful http api and http hook event api.
    • Config file hot loading.
    • Vhost supported.
    • Auto close stream when nobody played.
    • Play and push authentication.
    • Pull stream on Demand.
    • Support TS / PS streaming push through RTP,and it can be converted to RTSP / RTMP / HLS / FLV.
    • Support real-time online screenshot http api.

System Requirements

  • Compiler support c++11,GCC4.8/Clang3.3/VC2015 or above.
  • cmake3.1 or above.
  • All Linux , both 32 and 64 bits
  • Apple OSX(Darwin), both 32 and 64bits.
  • All hardware with x86/x86_64/arm/mips cpu.
  • Windows.

How to build

It is recommended to compile on Ubuntu or MacOS,compiling on windows is cumbersome, and some features are not compiled by default.

Before build

  • You must use git to clone the complete code. Do not download the source code by downloading zip package. Otherwise, the sub-module code will not be downloaded by default.You can do it like this:
git clone https://github.com/xia-chu/ZLMediaKit.git
cd ZLMediaKit
git submodule update --init

Build on linux

  • My environment

    • Ubuntu16.04 64 bit and gcc5.4
    • cmake 3.5.1
  • Guidance

      # If it is on centos6.x, you need to install the newer version of GCC and cmake first, 
      # and then compile manually according to the script "build_for_linux.sh".
      # If it is on a newer version of a system such as Ubuntu or Debain,
      # step 4 can be manipulated directly.
      # 1、Install GCC5.2 (this step can be skipped if the GCC version is higher than 4.7)
      sudo yum install centos-release-scl -y
      sudo yum install devtoolset-4-toolchain -y
      scl enable devtoolset-4 bash
      # 2、Install cmake (this step can be skipped if the cmake version is higher than 3.1)
      tar -xvf cmake-3.10.0-rc4.tar.gz #you need download cmake source file manually
      cd cmake-3.10.0-rc4
      make -j4
      sudo make install
      # 3、Switch to high version GCC
      scl enable devtoolset-4 bash
      # 4、build
      cd ZLMediaKit

Build on macOS

  • My environment

    • macOS Sierra(10.12.1) + xcode8.3.1
    • Homebrew 1.1.3
    • cmake 3.8.0
  • Guidance

    cd ZLMediaKit

Build on iOS

  • You can generate Xcode projects and recompile them , learn more:

    cd ZLMediaKit
    mkdir -p build
    cd build
    # Generate Xcode project, project file is in build directory
    cmake .. -G Xcode -DCMAKE_TOOLCHAIN_FILE=../cmake/ios.toolchain.cmake  -DPLATFORM=OS64COMBINED

Build on Android

Now you can open android sudio project in Android folder,this is a aar library and damo project.

  • My environment

    • macOS Sierra(10.12.1) + xcode8.3.1
    • Homebrew 1.1.3
    • cmake 3.8.0
    • android-ndk-r14b
  • Guidance

    cd ZLMediaKit
    export ANDROID_NDK_ROOT=/path/to/ndk

Build on Windows

  • My environment

  • Guidance

1 Enter the ZLMediaKit directory and execute git submodule update -- init downloads the code for ZLToolKit
2 Open the project with cmake-gui and generate the vs project file.
3 Find the project file (ZLMediaKit.sln), double-click to open it with vs2017.
4 Choose to compile Release version. Find the target file and run the test case.


  • As server:

     TcpServer::Ptr rtspSrv(new TcpServer());
     TcpServer::Ptr rtmpSrv(new TcpServer());
     TcpServer::Ptr httpSrv(new TcpServer());
     TcpServer::Ptr httpsSrv(new TcpServer());
  • As player:

     MediaPlayer::Ptr player(new MediaPlayer());
     weak_ptr<MediaPlayer> weakPlayer = player;
     player->setOnPlayResult([weakPlayer](const SockException &ex) {
         InfoL << "OnPlayResult:" << ex.what();
         auto strongPlayer = weakPlayer.lock();
         if (ex || !strongPlayer) {
         auto viedoTrack = strongPlayer->getTrack(TrackVideo);
         if (!viedoTrack) {
             WarnL << "none video Track!";
         viedoTrack->addDelegate([](const Frame::Ptr &frame) {
             //please decode video here
     player->setOnShutdown([](const SockException &ex) {
         ErrorL << "OnShutdown:" << ex.what();
     //rtp transport over tcp
     (*player)[Client::kRtpType] = Rtsp::RTP_TCP;
  • As proxy server:

     //support rtmp and rtsp url
     //just support H264+AAC
     auto urlList = {"rtmp://live.hkstv.hk.lxdns.com/live/hks",
     map<string , PlayerProxy::Ptr> proxyMap;
     int i=0;
     for(auto url : urlList){
     	PlayerProxy::Ptr player(new PlayerProxy("live",to_string(i++).data()));
  • As puser:

     PlayerProxy::Ptr player(new PlayerProxy("app","stream"));
     RtmpPusher::Ptr pusher;
     	const_cast<RtmpPusher::Ptr &>(pusher).reset(new RtmpPusher(app,stream));

Docker Image

You can pull a pre-built docker image from Docker Hub and run with

docker run -id -p 1935:1935 -p 8080:80 -p 8443:443 -p 8554:554 -p 10000:10000 -p 10000:10000/udp -p 8000:8000/udp -p 9000:9000/udp zlmediakit/zlmediakit:master

Dockerfile is also supplied to build images on Ubuntu 16.04

cd docker
docker build -t zlmediakit .



实现RTSP/RTMP/HLS/HTTP协议的轻量级流媒体框架,支持大并发连接请求 expand collapse


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