How to add/remove Multicast Group under a specific interface (Windows)

Question

I have a multicast camera on ip 225.1.2.3.

On my computer, I can play video in VLC over LAN card or Wi-Fi. But when i start playing with ffplayer (ffplay.exe) it looks like it registers to multicast:

and because of that multicast is added to a specific network adapter.

but this is not shown in

After this multicast IP address is added to specific network (on image added to Wi-Fi) I tried to play it on LAN card. Video can't be played anymore. I checked Wireshark and packets are coming to LAN device but video can't be played.

My question is how to remove joined multicast from a specific network adapter?

I tried

route delete 225.1.2.3

but since this IP is not shown in route print this doesn't work.

Also tried

route -p add <multicast address> MASK <subnet mask> <adapter primary address>
route -p add 225.1.2.3 MASK 255.0.0.0 0.0.0.0

but didn't help

To fix I disabled the Wi-Fi adapter, and the reference to multicast was lost. After that I was able to play video on LAN again. But this is not a good fix, any ideas?

Solution 1

I found solution, to add network device ip in to URL like @William John Holden said.

udp://@225.10.28.19:15004 --miface=169.100.27.103"

For me it worked

udp://@225.10.28.19:15004?localaddr=169.100.27.103"

Solution 2

Multicast joins are very different from the unicast routes that you see in the route command. The route command shows unicast destinations that your computer can send to. The show joins subcommand of netsh indicates what multicast IP addresses your computer is listening to. Usually the software application chooses what interfaces (often all) to listen on. In VLC you can specify the listening IP interface in the URL, such as udp://[email protected]:65001 where 192.0.2.15 is the IP address on the interface you wish to receive packets sent to 239.255.0.15. You may be able to keep VLC receiving multicast packets on the LAN by specifying the LAN IP address in the URL like this.

Comments

[Martin86]

Didn't know that i can add interface ip in the URL, i will definitely try it.