[Live-devel] membership report group

[Ross Finlayson]

As Rune Torgesen explained, multicast packets are routed on the network based on the IP multicast address; the port number is used only once an IP (actually UDP/IP) multicast packet reaches each recipient.  So, each stream (or at least each PC) should use a separate multicast address.

Also:

> On Jan 18, 2023, at 5:02 AM, g.jaegy <g.jaegy at imagine3d.fr> wrote:
> 
>  We have a system streaming 54 channels, using a different RTSP server for each channel, using 18 PCs in total (so about 3 streams per PC).

Note that you don’t have to run a separate RTSP server application/process for each stream served by a PC.  You can, instead, have a single RTSP server application per PC, each with multiple “ServerMediaSession” objects.  This is perhaps a little more efficient than running one RTSP server application per stream, even if your PC is a multiprocessor (because RTSP is usually I/O bound, rather than CPU bound).  The only possible benefit of running one RTSP server per stream is that it’s more fault tolerant if a RTSP server should crash (but that’s something that shouldn’t really happen with our code).

Finally, if you have a problem/question, there’s usually little value in diving into the arcane details of the LIVE555 code.  That’s my job, not yours.  Just describe your symptoms; leave the diagnosis for the doctor :-)


Ross Finlayson
Live Networks, Inc.
http://www.live555.com/