Chord progression in the key of C#.
The chords are: F#min (iv), D#dim (iiº), G#maj (V), B#dim (viiº)
The video is a still image of a music staff with the chord notes
and guitar chord diagrams.
The audio was generated using the MMA: Musical MIDI Accompaniment
"50sRock1Sus" groove at 95 beats per minute.