Hi，大家好，我是编程小6，很荣幸遇见你，我把这些年在开发过程中遇到的问题或想法写出来，今天说一说
srs流媒体服务器 linux_centos 安装源,希望能够帮助你!!!。

一、Red5流媒体简介

Red5流媒体服务器是一个采用Java开发的开源免费的Flash流媒体服务器。并且相对于其他开源的流媒体服务器Red5易搭建、易理解。比其他收费的流媒体服务器更经济，它支持把音频(MP3)和视频(FLV)转换成播放流；录制客户端播放流(只支持FLV)；共享对象；现场直播流发布；远程调用。本人是因为需要做一个服务器来保存用户上传的音频和视频，并且用户可以随时观看和下载服务器上有的音频或视频。因此接触到流媒体服务器，因为Red5开源免费，并且性能还可，就学习了一下Red5，接下来我就分享一下我的搭建过程、遇到的问题和如何解决问题的。

二、搭建流程

1、下载Red5

下载Red5压缩包到自己熟悉的文件夹中下载。（如：cd /usr/local）

wget https://github.com/Red5/red5-server/releases/download/v1.2.6/red5-server-1.2.6.tar.gz 

解压缩Red5

tar -zxvf red5-server-1.2.6.tra.gz 

然后进入到red5-server

2、修改Red5相关配置

打开conf文件夹下的red5.properties

[root@localhost red5-server]# vim conf/red5.properties 

这里我们先把HTTP和RTMP的host修改为我们本机的IP，端口可以使用默认的，也可自定义修改。这里我修改host为我本机IP:10.6.3.104

# Socket policy policy.host=0.0.0.0 policy.port=843 # HTTP http.host=10.6.3.104 http.port=5080 https.port=5443 http.URIEncoding=UTF-8 http.max_headers_size=8192 http.max_keep_alive_requests=-1 http.max_threads=20 http.acceptor_thread_count=10 http.processor_cache=20 # RTMP rtmp.host=10.6.3.104 rtmp.port=1935 rtmp.io_threads=8 rtmp.send_buffer_size=65536 rtmp.receive_buffer_size=65536 rtmp.ping_interval=1000 rtmp.max_inactivity=60000 rtmp.max_handshake_time=5000 rtmp.tcp_nodelay=true rtmp.tcp_keepalive=false rtmp.default_server_bandwidth= rtmp.default_client_bandwidth= rtmp.client_bandwidth_limit_type=2 rtmp.bandwidth_detection=false rtmp.encoder_base_tolerance=5000 rtmp.encoder_drop_live_future=false # traffic optimization hinting. to disable set traffic class set to -1 # low delay + high throughput == 24 (0x18) rtmp.traffic_class=-1 # requested maximum length of the queue of incoming connections rtmp.backlog=32 # the interval (seconds) between each throughput calculation rtmp.thoughput_calc_interval=15 # enable use of the default mina acceptor rtmp.default_acceptor=true # socket i/o pool sizes used when default acceptor is disabled rtmp.initial_pool_size=0 rtmp.max_pool_size=2 rtmp.max_processor_pool_size=8 rtmp.executor_keepalive_time=60000 mina.logfilter.enable=false # scheduler configs (per application) rtmp.scheduler.pool_size=8 rtmp.deadlockguard.sheduler.pool_size=8 # message executor configs (per application) - adjust these as needed if you get tasks rejected rtmp.executor.core_pool_size=4 rtmp.executor.max_pool_size=32 rtmp.executor.queue_capacity=64 # drop audio packets when queue is almost full, to disable this, set to 0 rtmp.executor.queue_size_to_drop_audio_packets=60 # maximum amount of time allotted to process a single rtmp message / packet in milliseconds, set it as 0 to disable timeout rtmp.max_handling_time=2000 # connection tweaks - dont modify unless you know what you're doing rtmp.channel.initial.capacity=3 rtmp.channel.concurrency.level=1 rtmp.stream.initial.capacity=1 rtmp.stream.concurrency.level=1 rtmp.pending.calls.initial.capacity=3 rtmp.pending.calls.concurrency.level=1 rtmp.reserved.streams.initial.capacity=1 rtmp.reserved.streams.concurrency.level=1 # maximum packet size allowed in bytes rtmp.max_packet_size= # RTMPS rtmps.host=0.0.0.0 rtmps.port=8443 rtmps.ping_interval=5000 rtmps.max_inactivity=60000 rtmps.max_keep_alive_requests=-1 rtmps.max_threads=8 rtmps.acceptor_thread_count=2 rtmps.processor_cache=20 # RTMPS Key and Trust store parameters rtmps.keystorepass=password rtmps.keystorefile=conf/keystore.jks rtmps.truststorepass=password rtmps.truststorefile=conf/truststore.jks # RTMPT rtmpt.host=0.0.0.0 rtmpt.port=8088 rtmpt.ping_interval=5000 rtmpt.max_inactivity=60000 rtmpt.max_handshake_time=5000 rtmpt.max_keep_alive_requests=-1 rtmpt.max_threads=8 rtmpt.acceptor_thread_count=2 rtmpt.processor_cache=20 rtmpt.encoder_base_tolerance=5000 rtmpt.encoder_drop_live_future=true # better setting for streaming media rtmpt.target_reponse_size=32768 # best setting for small messages or shared objects #rtmpt.target_reponse_size=8192 # max incoming messages to process at a time. the most that FP appears to send is 166 rtmpt.max_in_msg_process=166 # max time in millis that we will wait when offering data to the in or out queue rtmpt.max_queue_offer_time=125 # max offer attempts rtmpt.max_queue_offer_attempts=4 # Debug proxy (needs to be activated in red5-core.xml) proxy.source_host=127.0.0.1 proxy.source_port=1936 proxy.destination_host=127.0.0.1 proxy.destination_port=1935 # JMX jmx.rmi.host=localhost jmx.rmi.port=9999 jmx.rmi.sport=9998 jmx.rmi.port.remoteobjects= jmx.keystorepass=password jmx.mina.monitor.enable=false jmx.mina.poll.interval=1000 # Whether to always create the registry in-process, not attempting to # locate an existing registry at the specified port. Set to "true" in order # to avoid the overhead of locating an existing registry when you always intend # to create a new registry in any case. jmx.registry.create=true # Whether or not the MBeanServerFactoryBean should attempt to locate a running # MBeanServer before creating one jmx.reuse.existing.server=true # Whether to register the MBeanServer with the MBeanServerFactory, making it # available through MBeanServerFactory.findMBeanServer() jmx.register.factory=true # Whether any threads started for the JMXConnectorServer should be started as daemon threads jmx.daemon=true # Whether the JMXConnectorServer should be started in a separate thread jmx.threaded=true # Server properties # max events to send in a single update so.max.events.per.update=64 so.scheduler.pool_size=4 keyframe.cache.entry.max=500 war.deploy.server.check.interval= fileconsumer.delayed.write=true fileconsumer.queue.size=120 fileconsumer.wait.for.keyframe=true subscriberstream.buffer.check.interval=5000 subscriberstream.underrun.trigger=100 subscriberstream.max.pending.frames=10 subscriberstream.max.sequential.frames=10 broadcaststream.auto.record=false 

3、启动Red5服务器

修改完以上的配置，我们就可以启动Red5服务器啦。

[root@localhost red5-server]# ./red5.sh 

你以为这就启动成功了？我在两台Linux下搭Red5都遇到了问题，你也不例外。。。

4、问题解决

问题1：

[root@localhost red5-server]# ./red5.sh Running on Linux Starting Red5 Unrecognized VM option 'UseZGC' Error: Could not create the Java Virtual Machine. Error: A fatal exception has occurred. Program will exit. 

对于这个问题我们还需要改一下配置文件，进入到red5.sh文件

[root@localhost red5-server]# vim red5.sh 

找到下面文件里的-XX:+UseZGC,删去即可

。。。。。。。。。上面还有我就没复制了 # JAVA options # ZGC collector https://wiki.openjdk.java.net/display/zgc # You can set JVM additional options here if you want if [ -z "$JVM_OPTS" ]; then JVM_OPTS="-XX:+UnlockExperimentalVMOptions -XX:+UseZGC -Xms256m -Xmx1g -Xverify:none -XX:+UseBiasedLocking -XX:InitialCodeCacheSize=8m -XX:MaxGCPauseMillis=500 -XX:ReservedCodeCacheSize=32m" fi # Set up security options SECURITY_OPTS="-Djava.security.debug=failure" # Set up tomcat options TOMCAT_OPTS="-Dcatalina.home=$RED5_HOME -Dcatalina.useNaming=true" export JAVA_OPTS="$SECURITY_OPTS $JAVA_OPTS $JVM_OPTS $TOMCAT_OPTS $NATIVE" if [ -z "$RED5_MAINCLASS" ]; then 

再到第3步重启Red5服务器，然后又报错，就是问题2了。

问题2：

[root@localhost red5-server]# ./red5.sh Running on Linux Starting Red5 Error: A JNI error has occurred, please check your installation and try again Exception in thread "main" java.lang.UnsupportedClassVersionError: org/red5/server/Bootstrap has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0 at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:763) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) at java.net.URLClassLoader.defineClass(URLClassLoader.java:467) at java.net.URLClassLoader.access$100(URLClassLoader.java:73) at java.net.URLClassLoader$1.run(URLClassLoader.java:368) at java.net.URLClassLoader$1.run(URLClassLoader.java:362) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:361) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:338) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:495) 

这个报错原因就是openjdk的版本低了，然后打开Red5的配置文件发现默认使用的是jdk11，然后我把他的配置文件该文jdk8，再次启动，结果还是报这个错，没办法，下载jdk11吧。
jdk下载方法和上面Red5压缩包的下载一样，后期我也会发一篇关于openjdk的下载方法，大家可以关注一下，哈哈哈。。。
下载完jdk11之后，再次修改./red5.sh文件

#!/bin/bash if [ -z "$RED5_HOME" ]; then export RED5_HOME=`pwd`; fi # Java 11 export JAVA_HOME=/opt/jdk-11 P=":" # The default classpath separator OS=`uname` case "$OS" in CYGWIN*|MINGW*) # Windows Cygwin or Windows MinGW P=";" # Since these are actually Windows, let Java know # Native path NATIVE="-Djava.library.path=$RED5_HOME/lib/amd64-Windows-msvc" ;; 

将JAVA_HOME的路径改为你jdk11的路径。然后再次启动

。。。。。上面巴拉巴拉一大堆 [INFO] [pool-1-thread-5] org.red5.net.websocket.WebSocketScope - Application scope: Scope [name=oflaDemo, path=/default, type=APPLICATION, autoStart=true, creationTime=27, depth=1, enabled=true, running=true] [INFO] [pool-1-thread-5] org.red5.net.websocket.WebSocketScopeManager - addWebSocketScope: WebSocketScope [path=/oflaDemo, listeners=0, connections=0] [INFO] [pool-1-thread-5] org.red5.net.websocket.WebSocketScope - WebSocket scope added [INFO] [pool-1-thread-3] org.red5.net.websocket.WebSocketPlugin - Creating WebSocketScopeManager for org.red5.server.adapter.MultiThreadedApplicationAdapter@337edd9c [INFO] [pool-1-thread-3] org.red5.net.websocket.WebSocketPlugin - WebSocketPlugin application: org.red5.server.adapter.MultiThreadedApplicationAdapter@337edd9c [INFO] [pool-1-thread-3] org.red5.net.websocket.WebSocketScope - Application scope: Scope [name=SOSample, path=/default, type=APPLICATION, autoStart=true, creationTime=39, depth=1, enabled=true, running=true] [INFO] [pool-1-thread-3] org.red5.net.websocket.WebSocketScopeManager - addWebSocketScope: WebSocketScope [path=/SOSample, listeners=0, connections=0] [INFO] [pool-1-thread-3] org.red5.net.websocket.WebSocketScope - WebSocket scope added [INFO] [pool-6-thread-1] org.red5.server.tomcat.WarDeployer - Deploy wars with app start 

然后打开浏览器访问http://你的IP:端口，我的就是http:10.6.3.104:5080，出现以下页面，，恭喜你，说明你搭建成功了。

5、测试环节

red5的播放默认使用的是Flash，但是目前很多浏览器不使用Flash了，因此我们先自己使用Xftp上传一段视频到red5上，然后再通过url进行访问。
1、进入red5的demo

通过对demo的探索，我发现可以直接使用他也是一个Web项目可以通过Xftp向Linux上传视频或者音频，然后通过url进行访问。
2、上传视频

点击这个Xftp可以往Linux下上传视频，我上传了一个叫1.mp4的视频。

然后重启Red5服务器，通过http://你的主机:端口/视频路径，我的就是http://10.6.3.104:5080/oflaDemo/1.mp4。如果能正常播放你上传的视频，然后说明你的Red5流媒体服务器搭建完全成功。

6、结语

因为我们是搭建在Linux上，我们每次上传视频或音频不可能打开Xftp，通过Xftp来上传。因此我们需要继续研究Red5，看它对外提供了哪些接口，如何与项目的Web通信。本人也会继续研究Red5，后续可能会继续发布Red5的相关知识，请大家多多支持，如有问题，欢迎大家指正批评。

今天的分享到此就结束了，感谢您的阅读，如果确实帮到您，您可以动动手指转发给其他人。