User Guide

60 Working With Media Files

Within the VirtualKeys tag of the vhost.xml file, set the virtual key for Flash Player 7 and

below to

fp7 and set the virtual key for Flash Player 7 (7.0.19.0) and later (the player version

that supports the On2 codec) to

fp8, as in the following example:

</VirtualKeys>

Configure your virtual directories to look for client keys of "fp7slow", "fp8slow", and so on,

as in the following example:

<Streams key="fp7slow">foo;c:\streams\Sorenson22k</Streams>

<Streams key="fp7medium">foo;c:\streams\Sorenson150k</Streams>

<Streams key="fp7fast">foo;c:\streams\Sorenson300k</Streams>

<Streams key="fp8slow">foo;c:\streams\Vp622k</Streams>

<Streams key="fp8medium">foo;c:\streams\Vp6150k</Streams>

<Streams key="fp8fast">foo;c:\streams\Vp6300k</Streams>

<Streams key="">foo;c:\streams</Streams>

</VirtualDirectory>

In your server-side script, in the application.onConnect handler, write a bandwidth

detection routine and append the range to the value of each client’s virtual key, as in the

following example:

client.virtualKey += "slow"

client.virtualKey += "medium"

client.virtualKey += "fast"

Flash Media Server will now serve content to individual clients based on the client’s player

version and bandwidth.

Mapping virtual directories to virtual keys

The mapping between the virtual keys and virtual directories is made in the vhost.xml file.

The

<VirtualKeys> section from the vhost.xml file maps virtual keys to a range of Flash

Player versions, as in the following example:

</VirtualKeys>