This Recommendation is intended to define non-interactive subjective assessment methods for evaluating the quality of digital video images coded at bit rates specified in classes for TV3@ MM4@ MM5 and MM6@ as specified in Table D.2 for applications such as videotelephony@ videoconferencing and storage and retrieval applications. The methods can be used for several different purposes including@ but not limited to@ selection of algorithms@ ranking of video system performance and evaluation of the quality level during a video connection.