Wireshark · Wireshark-users: [Wireshark-users] UDP playback issue

[Jean-Baptiste Delpy <jb.delpy@xxxxxxxxx>]

Hello,

I have recorder UDP traffic (video streaming) with wireshark on a 
listenning computer. Now I'm trying to play it back on the emitting 
computer. But this is not working. I've tried it out with both Playcap 
and "Packet player" but i looks like more a OS (Windows 7) or network 
configuration issue. However "Packet Player" officially does support 
Windows 7.

Both UDP Unicast and multicast doesn't work. I've tried without firewall 
at all and it does not change (and it worked with the firewall when I 
recorded the data).

If I look to stats in netstat nothing is coming out from the interface. 
So it is not a router issue.

If I test with IGMP packets records as for ping, it works perfectly. So 
the problem seems to be only UDP data.

May be my pcap filedoes not include some "initiating packets" that will 
activate the UDP output on my interface ? Is it normal to have issue 
only with UDP packets ?

Thanks for your help in advance,

Sincerely,
JBD