The RTSP Jukebox sample that I published here hardwires the port to the default, 554. A number of people have reported problems with this, particularly as it appears that some Windows Media Player components reserve that port.
I’ve created an updated version of the filter and test app that allows you to change the port used, and reports better error messages if the port chosen is already in use.
Download the source and binaries here. Feel free to get it touch if you are interested in extending this.
12 November 2013