Objective video quality metrics are designed to estimate thequality of experience of the end user. However, these objectivemetrics are usually validated with video streams degraded undercommon distortion types. In the presented work, we analyzethe performance of published and known full-reference and noreferencequality metrics in estimating the perceived quality ofadaptive bit-rate video streams knowingly out of scope. Experimentalresults indicate not surprisingly that state of the art objectivequality metrics overlook the perceived degradations in theadaptive video streams and perform poorly in estimating the subjectivequality results.