While we have come to expect the usual multicast adaptive bitrate (ABR) sales pitch from French firm Broadpeak, particularly during sustainability discussions, a panel session this week led by the European Broadcasting Union (EBU) had a few treasures in store. The applicability of multicast ABR for both fixed and wireless networks is potentially transformative, but adoption has been slow. We have known about British Telecom (BT) exploring the deployment of multicast ABR technology on set tops for some time, where BT’s owned and operated networks could benefit from delivery efficiencies, while OTT content delivery has long been pure a unicast ABR system. This week, however, saw affirmation that the UK operator is already actively using multicast ABR technology for distribution…