引言

流媒体文件是目前非常流行的网络媒体格式之一，这种文件允许用户一边下载一边播放，从而大大减少了用户等待播放的时间。另外通过网络播放流媒体文件时，文件本身不会在本地磁盘中存储，这样就节省了大量的磁盘空间开销。正是这些优点，使得流媒体文件被广泛应用于网络播放。

流媒体服务器是通过建立发布点来发布流媒体内容和管理用户连接的。流媒体服务器能够发布从视频采集卡或摄像机等设备中传来的实况流，也可以发布事先存储的流媒体文件，并且发布实况流和流媒体文件的结合体。一个媒体流可以由一个媒体文件构成，也可以由多个媒体文件组合而成，还可以由一个媒体文件目录组成。

Flash Media Server，简称 FMS，是 Flash 大家庭里的一员，被称为是目前开发 Web 音视频应用程序（比如，视频聊天室、视频会议系统、播客系统、音视频留言等等）的最方便最快捷的解决方案。也在 web 应用程序开发上有着越来越广泛的应用。当然 FMS 这种优良功能并不是免费提供给广大用户的，几千美金每个点的价格让很多开发人员望而却步。于是，大家开始尝试寻找一种更合适的解决方案，开源的 Red5 便成为了人们的新宠。

Red5 是一个采用 Java 开发的开源的 Flash 流媒体服务器，功能上与 FMS 类似。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。Red5 使用 RSTP 作为流媒体传输协议，包括在线录制，Flash 流媒体播放，在线聊天，视频会议等一些基本功能。国内外基于 Red5 的流媒体应用产品也在不断推广，例如在线视频会议 Openmeeting，大型 Flash 网游功夫之王 2。

Red5 概述

Red5 是一个采用 Java 开发开源的 Flash 流媒体服务器。免费开源使软件更加容易扩展，下载后你可以对源代码进行修改；更加经济，比起 FMS 高昂的费用，Red5 能为一般的应用节约大笔费用；同时服务器端的 Java 面向对象语言比起 FMS 服务器端的 ActionScript2 语言更加成熟。鉴于 Red5 的种种优势，推出不久便被广大用户所接受。

Red 5 支持:

1. 把音频（MP3）和视频（FLV, F4V, MP4, 3GP）转换成播放流；

2. 录制客户端播放流, 把摄像头，麦克风等传入的音频视频录制保存到服务器；

3. 共享对象；

4. 现场直播流发布；

5. 远程调用；

6. 协议:RTMP, RTMPT, RTMPS, and RTMPE。

Red5 服务器搭建

JDK自行安装

下载Red5

https://github.com/Red5/red5-server/releases

解压到自己的一个能记住的文件夹中 eg:F:\Red5

配置Red5相关参数

修改red5.properties配置文件..\conf\red5.properties

只需要配置HTTP 和RMTP节点的host和port即可默认也行host配置成0.0.0.0 输入局域网IP或者127.0.0.1都可以正常访问

# Socket policy
policy.host=0.0.0.0
policy.port=843
# HTTP
http.host=0.0.0.0
http.port=8855
https.port=5443
http.URIEncoding=UTF-8
http.max_keep_alive_requests=-1
http.max_threads=20
http.acceptor_thread_count=10
http.processor_cache=20
# RTMP
rtmp.host=0.0.0.0
rtmp.port=1935
rtmp.io_threads=16
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=10000000
rtmp.default_client_bandwidth=10000000
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=16
rtmp.executor_keepalive_time=60000
mina.logfilter.enable=false
# scheduler configs (per application)
rtmp.scheduler.pool_size=16
rtmp.deadlockguard.sheduler.pool_size=16
# 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
# 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=20
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=20
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
# WebSocket
ws.host=0.0.0.0
ws.port=8081
# 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=600000
fileconsumer.delayed.write=true
fileconsumer.queue.size=120
subscriberstream.buffer.check.interval=5000
subscriberstream.underrun.trigger=100
broadcaststream.auto.record=false