In this paper, a Quality Metric (QM) called the Artifacts-based Video Quality Metric (AVQM) is proposed. Three avenues of innovation are exploited. 1) The context of the video is used so that artifacts in different surroundings are treated differently. 2) A measurement is made of the block-flashing artifact. 3) A non-linear method of combining artifact measures using fuzzy methods is employed. Simulation results indicate that these significantly improve performance.