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Matou  
#1 Posted : Saturday, October 17, 2026 10:46:34 PM(UTC)
Matou

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Italy
Location: Italy - Aosta Valley

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Hi, is vMixCall working today?
or is it just a problem on my end?
Matou  
#2 Posted : Sunday, October 18, 2026 10:25:37 PM(UTC)
Matou

Rank: Advanced Member

Groups: Registered
Joined: 10/21/2016(UTC)
Posts: 36
Man
Italy
Location: Italy - Aosta Valley

Thanks: 26 times
Was thanked: 2 time(s) in 2 post(s)
I’ve figured out why vMix Call wasn’t working (my fault): I’m using two PCs, each with its own vMix license, configured for a live stream. The issue lay in the firewall configuration—specifically with OPNsense, which modifies the source port of outgoing packets (a process known as "Port Scrambling" or "Target Port Randomization"). This breaks WebRTC and vMix Call when multiple internal machines are involved. I resolved the issue by setting up an Outbound NAT rule with "Static Port" enabled.

Allora capito il mancato funzionamento (per mia colpa) di Vmixcall: 2 pc, 2 licenze vmix e la configurazione per andare con 2 pc in diretta streaming. Bisogna configurare i firewalls e per me nello specifico di Opnsense - OPNsense modifica la porta sorgente dei pacchetti in uscita (Port Scrambling o Target Port Randomization). Questo rompe WebRTC e vMix Call quando ci sono più macchine interne. Configurando una regola di Outbound NAT con "Static Port" ho risolto il problema.
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