[Mp4-tech] Creating MPEG-4 scenes with references to multicast streams

[Andreas Åkre Solberg]

I need a tool to create MPEG-4 scenes with references to multicast 
streams. I want to create a video scene with i.e. four video objects 
reffering to four different multicast mpeg-4 streams. I know the 
Envivio Studio authoring software can do this, but I need to assign the 
multicast addresses dynamicly, so in result the scene must be created 
dynamicly on demand.
The XMT-tools from IBM seems perfect to be executed from a perl script 
or similar due to its command line interface. BUT IBM reports that the 
tools do not support rtsp streams in the <Video> node in XMT-O. I have 
asked them if the tools supports referring to rtsp-streams in XMT-A, 
but are awaiting an answer. If this is not possible I do need another 
tool that can do this for me? Any ideas? What about the tools from the 
ENST-guys..
If no tools can do this for me, I'm looking for a hack or workaround. 
Maybe I can use the IBM-tools to refer to a local MPEG-4 file, which is 
a quicktime reference (dynamicly created with QT java API) to a 
multicast rtsp stream. Guess this wont work, so any other ideas or 
suggestions is very much appriciated.
This work has no commercial interests - but is a diploma work on my 
university, creating a video conferencing server based on MPEG-4 and 
multicast. I will post a link to download the application and the 
report in late May 2004, when the work should be finished.
Thanks in advance,
Andreas Åkre Solberg
Norwegian University of Technology and Science.