One of the most immediate concerns at Integrated Systems Europe (ISE) 2023 in Barcelona this week was the role of physical cabling and networks, among the production specialists. This was most apparent when examining the number of Network Device Interface (NDI) mentions, complete with working demonstrations and products for purchase, versus the comparative absence of Reliable Internet Stream Transport (RIST) – another upstart contribution protocol that has struggled to make headway against archrival Secure Reliable Transport (SRT). Central to the surge in NDI has been Norwegian broadcast vendor Vizrt Group, which has been reorganized, to try and solve some of the tension between its open-ish NDI protocol and commercial divisions. For the top-tier broadcasters, Vizrt is the brand, but for…