So it seems that when we have an audio visual experience that the audio information our brains process basically overrides the visual information and can even alter what we perceive.
Laurel J. Trainor and Andrea Unrau of McMaster University wrote in the Empirical Musicology Review Vol. 4, No. 1, 2009 : Extracting the beat: An experience-dependent complex integration of multisensory information involving multiple levels of the nervous system.
You can check out their paper here:https://kb.osu.edu/dspace/bitstream/handle/1811/36606/EMR000068b_Trainor_Unrau.pdf?sequence=1
So not only is perception altered with audio visual experiences – our memory plays a major role. The timing of the audio and visual beats are not the same at any point in the videos.
Does experience (memory) bring them together?