The VideoLAN Forums

Hi all:

VLC Media Player doesn`t send IGMP Membership reports when I am streaming multicast video. So that my multicast router is not able to forward multicast traffic (I use Windows server 2003 within two ethernet cards).
But when I am listenning for video streaming VLC sends IGMP Membership report.

How can i send IGMP membership reports when I am streaming multicast video??

Thanks in advance

Hi,

The streaming server doesn't have to send IGMP report it just streams the video on its network interface.

So what's the problem ?


Check if your Win Server runs IGMPv2 or IGMPv3
Try to capture IGMP reports with ethereal for instance.

Yes, you are rigth.

My problem was that TTL field is 1 by default so the video stream was not able to cross the router. I was wrong and I believed the problem was IGMP protocol.

Thanks for your reply.

Please correct me if I am wrong.

VLC does not send out IGMP report message and WindowXP sends out IGMP report message in my case.

And also, (I am currently using WindowXP) the default IGMP version of WindowXP is version 3. Most of the devices are only support version 1 and 2 so you may need to modify your PC registry.

Yes ...

the right sentence is :

VLC asks your OS to send out an IGMP packet through your network interface.


Regarding winxp, you are right, but it seems to work without any modification with igmp v2 equipments ... Strange ...

Yes, WindowsXP and Win2K3 Server use IGMP v3 and I do not use another operative systems, but I think you are rigth.

windowsXP sends out IGMP reports when VLC joins or leaves a multicast group.