ui.protocolCombo->addItem("UDP/RTP (unicast)", QVariant("udp"));
ui.protocolCombo->addItem("UDP/RTP (multicast)", QVariant("udp"));
ui.protocolCombo->addItem("RTMP", QVariant("rtmp"));
ui.protocolCombo->addItem("UDP/RTP (unicast)", QVariant("udp"));
ui.protocolCombo->addItem("UDP/RTP (multicast)", QVariant("udp"));
ui.protocolCombo->addItem("RTMP", QVariant("rtmp"));