Delivering several services with the multicast server

[chburdinat]

I've tried to multiplex 2 services with the following command:

gpac -i https://livesim2.dashif.org/livesim2/testpic_2s/Manifest.mpd dashin:forward=file:FID=1 -i https://akamaibroadcasteruseast.akamaized.net/cmaf/live/657078/akasource/out.mpd dashin:forward=file:FID=2 -o mabr://225.1.1.0:6000/:SID=1,2

As a result, I see 4 transport sessions for the 2 audios and the 2 videos, all delivered in 225.1.1.0:6001 with different TSIs.

The issue is with the Multicast Gateway Configuration document instance:
-There is only one MulticastSession (while expecting 2, one per service) and one presentationManifestLocator pointing to the manifest of the second service.
-There are 4 MulticastTransportSession elements within the MulticastSession. 2 of them are mapped to the wrong manifest.

see:
MulticastGatewayConfiguration.zip

Additionally, it would be better to transport the services in different multicast IPs (to avoid receiving all the trafic with a IGMP join while only one service is consumed)