Headphones are recommended. Enlarging the video is good. The mantra below is perfect for beginning your centering. Focus on the center of the video. Let the eyes rest and listen deeply. Once centered allow the mantra to fade if it does.
The mantra is Khayla d' Alaha ( Kha-hayla dah uh-luh-huh) which means the power of God in Aramaic. The language of Jesus.