A subjective study of the perceptual acceptability of audio-video desynchronization in sports videos

This paper presents the results of a study conducted on the perceptual acceptability of audio-video desynchronization for sports videos. The study was conducted with 45 videos generated by applying 8 audio-video offsets on 5 source contents. 20 subjects participated in the study. The results show that humans are more sensitive to audio-video offset errors for speech stimuli, and the complex events that occur in sports broadcasts have higher thresholds of acceptability. This suggests the tuning of audio-video synchronization requirements in broadcasting to the content of the broadcast.