dedicated to the discussion of the chinese internal martial arts of xingyiquan, baguazhang, taijiquan, related arts, and anything else best discussed over a bottle of rum
The video intro says it is M Han Baoshun, who is in Zhang Ce's line of Wuxing Tongbei. The form he is showing is presumably the old Yang taiji form which Zhang Ce learned from Yang Jianhou, looks v rounded and connected.
Had a strange feeling while watching it until I realized that the video was slowed done by 50%. Seems like it was not "taiji"-slow enough for whoever put it online.