Trying to run the Darwin Streaming 5.5.5 server under Leopard will not work. If you look trough the logfiles you will see the following error:
/System/Library/StartupItems/QuickTimeStreamingServer/QuickTimeStreamingServer: line 19: /usr/sbin/QuickTimeStreamingServer: cannot execute binary file
Somehow this version of Darwin Streaming Server does not work under macos 10.5 (Leopard) this can be fixed by using the binary from an older version. I did the following steps to get it running under Leopard.
Download the following package. http://www.opensource.apple.com/projects/streaming/release/DarwinStream… Just install this over the 5.5.5 install and you will be able to setup Darwin Streaming Server