MACROMEDIA FLASH MEDIA SERVER 2-MANAGING FLASH MEDIA..., Руководство пользователя

Страница: 180 / 238

180 Configuration Files
This example maps all streams whose names begin with
foo/
to the physical directory c:\data.
The stream named
foo/bar
would map to the physical file c:\data\bar.flv.
If there is a stream named
foo/bar/x
then Flash Media Server first tries to find a virtual
directory mapping for
foo/bar
. If there is no virtual directory for
foo/bar
, Flash Media
Server then checks for a virtual directory mapping for
foo.
Since a virtual directory mapping
does exist for
foo
, the stream
foo.bar
maps to the file c:\data\bar\x.flv.
Syntax
virtualDirectory
;
actualDirectory
The
Streams
tag allows you to specify a virtual directory for stored stream resources used by
more than one application. By using a virtual directory, you specify a relative path that points
to a shared directory that multiple applications can access.
Example
<Streams>common;C:\FlashMediaServer\myApplications\shared/resources\
</Streams>
If the virtual directory you specify does not end with a backward slash, one is added by the
server.
Any application that refers to a stream whose path begins with common/ will access the item
in C:\FlashMediaServer\myApplications\shared\resources regardless of the application’s own
directory structure. If the application VideoConference refers to an item common/video/
recorded/June5 and the application Collaboration refers to common/videorecorded/June5,
they both point to the same item
C:\FlashMediaServer\myApplications\shared\resources\video\recorded\June5\.
Additional information
This release includes a feature called custom stream delivery, which allows Flash Media Server
to match the decoding of a recorded stream to the version of Flash Player on the client.
Custom stream delivery allows an application running on Flash Media Server to switch
between the Sorenson and On2 CODECs (data COmpressor/DECompressor) without
changes to the code.
Custom stream delivery is enabled using a combination of the
VirtualDirectory
and
VirtualKey
tags, and the
Client.virtualKey
and
Stream.setVirtualPath()
APIs.
For optimal results:
■
Streams replaying on Flash Players 6 and 7 use the Sorenson technology.
■
Streams replaying on Flash Player 8 use the On2 technology.