Ubuntu 10.04安装Darwin Streaming Server

由于项目的原因，需要搭建这么个玩意。

Darwin StreamingServer简称DSS，DSS是Apple公司提供的开源实时流媒体播放服务器程序。使用这个程序可以方便的在机子上搭建出一个多媒体的服务器。

以下是安装最新的DarwinStreaming Server6.03版本的步骤

1.下载如下安装包以及patch

http://static.macosforge.org/dss/downloads/DarwinStreamingSrvr6.0.3-Source.tar

http://dss.macosforge.org/trac/raw-attachment/ticket/6/dss-6.0.3.patch

http://dss.macosforge.org/trac/raw-attachment/ticket/6/dss-hh-20080728-1.patch

2.解压程序及相关打patch步骤

su(以root权限操作，之前在普通用户下的sudo操作没有成功)

tar -xvf DarwinStreamingSrvr6.0.3-Source.tar

addgroup -system qtss
adduser -system -no-create-home -ingroup qtss qtss

apt-get install build-essential

patch -p0 < dss-6.0.3.patch
patch -p0 < dss-hh-20080728-1.patch

cd DarwinStreamingSrvr6.0.3-Source
mv Install Install.old

下载如下文件
http://dss.macosforge.org/trac/raw-attachment/ticket/6/Install
放到 DarwinStreamingSrvr6.0.3-Source目录中

chmod +x Install
./Buildit
./Install

安装完了以后，流媒体服务是自动启用的。

这样就可以输入http://127.0.0.1:1220进入web管理界面了，按照提示设置一些密码就可以了。服务器里面预置一些测试的用例。

下面就可以写VideoView来在模拟器上测试程序了

如果要用自己的多媒体文件来测试程序，传到流媒体服务器上后，用模拟器测试是无法播放的，程序会报

CommandPLAYER_INIT completed with an error or infoPVMFFailure的错误。


(以下参考:http://www.360doc.com/content/11/0105/14/1290342_84159022.shtml#)

流媒体是需要先hint的。所谓hint只是在原有的视音频轨道上增加一些流化信息。因此它和是否能够快进快退没有关系，只和文件能否流化有关系。换句话说，没有hint过的mp4文件也是可以快进快退的。

hint的具体解释可以参考下面这段英文：

摘自：http://www.gnu-darwin.org/www001/src/ports/multimedia/mpeg4ip-libmp4v2/work/mpeg4ip-1.6.1/doc/about_hint_tracks.txt

Hint tracks are a series of instructions in a mp4 container file that
tell a server how to transmit packets. Hint tracks always refer
to another track, most likely an audio or video media track.

This series of instructions tells the server when to send the packet,
what type of RTP header to add, if there is any extra data in the
packet, and how much data to send in the packet. To save on space,
a hint can contain a pointer to the media track, instead of duplicating
that data.

It will also tell what SDP to add for the track that is referenced.

So, a file that is hinted should have a media track, and an associated
hint track for that media track. There are some mp4 container files
that just have hint tracks - these are called "fat hints " and are
usually not playable locally. These are illegal in ISMA, so we won 't
talk about them.

To create hint tracks for a mp4 file is fairly simple with the mp4creator
program. Just execute the:
 mp4creator -hint= <track to hint track number> <mp4file>

例如:

没有流化过的mp4文件，用mp4info查看文件信息(如果mp4info没有安装，就用apt-getinstall mp4info安装一下 )。

mp4info ./test.mp4
mp4info version 1.6
./test.mp4:
Track Type Info
1 audio MPEG-4 AAC LC, 662.165 secs, 121 kbps, 48000 Hz
2 video H264 [email protected], 662.562 secs, 1756 kbps, 640x368 @ 29.970025 fps

hint音频：

mp4creator -hint=1 ./test.mp4 (如果mp4creator没有安装，就用apt-get install mp4creator安装一下 )

hint视频：

mp4creator -hint=2 ./test.mp4

查看流化后的信息：

mp4info ./test.mp4
mp4info version 1.6
./test.mp4:
Track Type Info
1 audio MPEG-4 AAC LC, 662.165 secs, 121 kbps, 48000 Hz
2 video H264 [email protected], 662.562 secs, 1756 kbps, 640x368 @ 29.970025 fps
3 hint Payload mpeg4-generic for track 1
4 hint Payload H264 for track 2
Tool: mp4creator 1.5.0.1

这样模拟器上就可以播放自己上传到服务器上的mp4了