Chord progression in the key of G.
The chords are: Cmin (iv), Adim (iiº), Dmaj (V), F#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
"8BeatBallad3" groove at 90 beats per minute.