The Expedus DVA IP, release 4.0, measures both QoS and QoE parameters for linear multicast IP and OTT/ABR streaming networks. It captures and decodes images every second for all supported channels. Operators can correlate alarmed events to visual representations of the content. Applications include linear IPTV headends, ABR network origin service points, regulatory compliance monitoring for closed captioning and audio level checking (CALM), and ad queuing point detection and verification per SCTE-35.