Perceptual Quality Evaluation for Faster Playback Videos

Faster playback, as a common feature of video services nowadays, enables users to watch a video in less time, while maintaining a complete and coherent viewing experience. However, it is still unclear what kind of perceptual quality users will have at different video playback speeds. In this paper, a number of experiments were carried out to analyze the relationship between user’s perceptual quality and the playback speed for different types of video content. Then, combining the characteristics of temporal complexity of video content, an objective evaluation model was proposed to predict the perceptual quality of faster playback videos. Experimental results show that the proposed method can effectively predict the perceptual quality of videos under different playback speeds. This proposed model can be used for video service providers to recommend optimal playback speed limits for videos across a variety of scenarios, so as to ensure user’s viewing experience.