自适应流媒体服务器

最近打算做一个流媒体的服务器，要求是客户端可以根据自己的网络环境、支持格式和喜好来选择播放高低质量的视频，在服务器端按照客户的需求进行视频的转换
自己写太麻烦，打算借助前人的经验
以前没有接触过这类东西，上网Google了一下，主流的RealNetworks和Microsoft都是不开源的，开源的又有很多，不知道应该怎么选择
希望各位网友能给我一点建议，尤其是视频流的格式转换，用哪个比较好呢，FFmpeg？　　　　　　

我也没尝试过, 不过你可以看看这些开源软件在 google 中出现的次数来确定哪个更受欢迎.　　　　　　

网上流传着一个<<流媒体Helix Server详细安装，配置>>的文章,详细讲解了Helix_DNA_Server_10.1.tar.gz的安装方法,今天我在RHEL AS 4.2上成功安装了Helix Server Unlimited v11.0.1.1884 For Linux,这个版本新一些,使用方法也有一点点不同于Helix_DNA_Server_10.1,我把安装与设置过程记录了下来,分享一下,但愿不是狗尾续貂.....

Helix Server Unlimited v11.0.1.1884 For Linux 特别版

下载地址:http://www.cncode.com/Download.a ... limited11_Linux.rar

(linux公社有Helix_DNA_Server_10.1可下载,不过我喜欢新些的版本)

汉化补丁 下载地址:http://www.helix.cn/download/Helix_Administrator_CHS_2.01.rar (解压密码:www.helix.cn)

以上两个文件都是用rar压缩的,你可以在你的linux中系统装一个rar_forlinux来解压,也可以winrar解压好再到linux系统中使用,我已经解压好了,解压后的文件都放在了同一个文件夹内.

下面是安装过程

[root@rhel ~]# cd helixserver/

[root@rhel helixserver]# ls

crack HelixAdministrator HelixServerUnlimited11_Linux.zip setup.tar.gz

[root@rhel helixserver]# tar xzvf setup.tar.gz

helix-server-retail-11.01-rhel4-setup.bin

HelixProxyAdmin.pdf

HelixProxyConfig.pdf

HelixServerAdmin.pdf

HelixServerConfig.pdf

[root@rhel helixserver]# ls

crack HelixServerConfig.pdf

HelixAdministrator helix-server-retail-11.01-rhel4-setup.bin

HelixProxyAdmin.pdf HelixServerUnlimited11_Linux.zip

HelixProxyConfig.pdf setup.tar.gz

HelixServerAdmin.pdf

[root@rhel helixserver]# chmod +x helix-server-retail-11.01-rhel4-setup.bin

[root@rhel helixserver]# ./helix-server-retail-11.01-rhel4-setup.bin

Extracting files for Helix installation........................

Welcome to the Helix Server 11.0 (11.0.1.1884) Setup for UNIX

Setup will help you get Helix Server running on your computer.

[ Press [Enter] to continue... ]

If a Helix Server license key file has been sent to you,

please enter its directory path below. If you have not

received a Helix Server license key file, then this server

WILL NOT OPERATE until a license key file is placed in

the server's License directory. Please obtain a free

Basic Helix Server license or purchase a commercial license

from our website at http://www.real.com/. If you need

further assistance, please visit our on-line support area

at http://service.real.com/.

License Key File: []: [ 这个是要许可证,可以先放下,等安装完再将许可证文件放入 ]

Installation and use of Helix Server requires

acceptance of the following terms and conditions:

Press [Enter] to display the license text... [ 回车,然后....有兴趣就读一读吧^_^... ]

Choose "Accept" to accept the terms of this

license agreement and continue with Helix Server setup.

If you do not accept these terms, enter "No"

and installation of Helix Server will be cancelled.

I accept the above license: [Accept]: [ 此处回车默认即可 ]

Enter the complete path to the directory where you want

Helix Server to be installed. You must specify the full

pathname of the directory and have write privileges to

the chosen directory.

Directory: [/root/helixserver]: /usr/helixserver [ 更改安装路径 ]

Please enter a username and password that you will use

to access the web-based Helix Server Administrator and monitor.

Username []: [ 设置远程管理用户名 ]

Username []assword []: [ 设置密码 ]

Confirm Password []:

Please enter a port on which Helix Server will listen for

RTSP connections. These connections have URLs that begin

with "rtsp://"

Port [554]: [ 此处回车默认即可 ]

Please enter a port on which Helix Server will listen for

HTTP connections. These connections have URLs that begin

with "http://"

Port [80]:8080 [ 更改http传输端口,为避免和apache冲突,建议更改 ]

Please enter a port on which Helix Server will listen for

MMS connections. These connections have URLs that begin

with "mms://"

Port [1755]: [ 此处回车默认即可 ]

Helix Server will listen for Administrator requests on the

port shown. This port has been initialized to a random value

for security. Please verify now that this pre-assigned port

will not interfere with ports already in use on your system;

you can change it if necessary.

Port [11012]:11111 [ 更改远程管理访问的端口,系统默认的有时难以记住,可更改为好记的 ]

You have selected the following Helix Server configuration:

Admin User/Password: traveller2/****

Encoder User/Password: traveller2/****

Monitor Password: ****

RTSP Port: 554

HTTP Port: 8080

MMS Port: 1755

Admin Port: 11111

Destination: /usr/helixserver

Enter [F]inish to begin copying files, or [P]revious to go

back to the previous prompts: [F]:

[ 如果以上设置你没意见,此处回车默认即可,否则按P重新设置 ]

Copying Helix Server files....

Helix Server installation is complete.

If at any time you should require technical

assistance, please visit our on-line support area

at http://service.real.com/.

Cleaning up installation files...

Done.

[ 安装完成 ]

[root@rhel helixserver]# ls

crack HelixServerConfig.pdf

HelixAdministrator helix-server-retail-11.01-rhel4-setup.bin

HelixProxyAdmin.pdf HelixServerUnlimited11_Linux.zip

HelixProxyConfig.pdf setup.tar.gz

HelixServerAdmin.pdf

[root@rhel helixserver]# cp -a HelixAdministrator/ /usr/helixserver/HelixAdministrator_zh/ [ 这是汉化过程,HelixAdministrator就是最初下载的汉化包解压得来 ]

[root@rhel helixserver]# cp crack/DistributedLicensing.lic /usr/helixserver/License/ [ 破解过程??^_^ ]

[root@rhel helixserver]#cd /usr/helixserver

[root@rhel helixserver]# mv HelixAdministrator HelixAdministrator_en

[ 为默认的英文语言包重命名,这样做的主要目的是,万一某一刻你突然感觉英文看着很爽,依然可以将管理界面换回英文 ]

[root@rhel helixserver]# ln -s HelixAdministrator HelixAdministrator_zh/

[root@rhel helixserver]# ls

adm_b_db default.cfg HelixAdministrator_zh Plugins

Bin default.cfg.old helixserver.my Plugins.old

Bin.old enc_b_db Lib rmserver.cfg

Cache enc_r_db Lib.old rmserver.cfg.old

cdi_b_db enc_w_db License Secure

Commerce HelixAdministrator Logs slta.cfg

Content HelixAdministrator_en master.cfg

[root@rhel helixserver]# ./Bin/rmserver rmserver.cfg & [ 启动服务器进程并让它在后台执行, ]

[root@rhel helixserver]# ps -aux |grep rmserver

Warning: bad syntax, perhaps a bogus '-'? See /usr/share/doc/procps-3.2.3/FAQ

root 2918 0.1 1.0 7000 2096 pts/0 S 18:17 0:00 ./Bin/rmserver rmserver
cfg

root 2919 7.9 61.5 324136 117592 ? Ssl 18:17 0:02 ./Bin/rmserver rmserver.cfg

root 2920 0.0 1.0 7004 2100 ? Ss 18:17 0:00 ./Bin/rmserver rmserver.cfg

[ 检查服务是否已正常启动 ]

这时你的流媒体服务器已经正常运行了,可以在远程进行维护.我是在另一台WINDOWS机上进行维护的.打开IE(或其他浏览器),输入 http://192.168.213.128:11111/admin/index.html

会提示让你输入用户名和密码,验证便可以看到管理界面,并且已经是全中文,端口设置可在这里随意更改.

限制最大用户数:

"加载点"里的内容一般是一定要更改的

现在我添加一个新的加载点mov1,注意加载点/mov1/最后一定要有这个"/",设置好后"应用"

更改加载点内容后若想生效必须重新启动helixserver服务,重启服务器按钮可在管理界面的右上角看到,重启后页面会在20秒后自动刷新,一般不需要等那么久,可以手动重载页面.

Helix Server Unlimited v11.0.1.1884已经将以前放在 "服务器设置中"的"媒体演示"功能也挪到,了右上角,和帮助等放在了一起,这样的更改的确更合理,你可以转到"媒体演示"页面进行服务器测试.这时你的流媒体服务器已基本能满足要求.

可监控服务器运行状态