A content delivery gateway receives a video sequence transmitted over an Internet Protocol network and the video sequence is destined to multiple digital display devices. The content delivery gateway transcodes the video sequence into one of multiple video formats, e.g., high efficiency video coding (HEVC) format to advanced video coding (AVC) format, HEVC OR AVC to MPEG-2 format. The content delivery gateway generates an IP-based user interface including video overly that allows existing quadrature amplitude modulation (QAM) based set-top boxes and digital TV adapters to receive features associated with IP video technology. The content delivery gateway further adds content protection by transcripting the video sequence. By deploying IP to QAM bridges, the content delivery gateway serves increasingly large numbers of IP-based digital display devices including tablets and smartphones while continuing to support existing QAM-based display devices.