With the fast-evolving video and display technologies, there is an interest in better understanding user preferences for video quality and the factors that impact these preferences. This study focuses on the subjective video quality assessment (VQA) of TV displays, considering a range of factors that influence viewer experience. We conducted two psychophysical experiments to investigate the latent factors affecting human-perceived video quality. Our results offer insights into how different factors contribute to video quality perception. This research guides researchers and developers aiming to improve display and environmental settings to give end-users an optimal viewing experience.