All video quality models give you an estimation of the quality – for example between 0 and 100, or on a scale from 1 to 5. However, interpreting this scale and comparing the numbers is not always possible. Standards bodies like the ITU (International Telecommunication Union) have formally defined the Mean Opinion Score (MOS) scale – and algorithms that can be used to measure video quality in a valid way.
Standardization plays an important role in creating video quality measurement algorithms that have been extensively validated by a large consortia, using thousands of human viewer’s ratings. They are among the most accurate and reliable tools that operators can use.
We implement our quality measurement solutions based on the world’s first and only HTTP Adaptive Streaming QoE Model, recommended by the ITU-T: the ITU-T P.1203 family. It has been the product of several years of joint research and has been shown to significantly outperform other models in terms of accuracy and speed.
On top of the existing standards, we cooperate with our academic partner, TU Ilmenau, to extend and validate the video quality models so that they are fit for next-generation codec technology.