What is the name of the "jacket" in Hanbok?

The one in the picture is not exactly a hanbok, it can only be said to be a modified version of the film and television costumes similar to hanbok.

Those similar to this are the cloak, the big-sleeved shirt. "Crane banner" or "cloak".

The dress in the picture is just lengthened at the hem, and the sleeves are big-sleeved.

The basic features of the Han Chinese dress are the cross-collar (crossed in front of the chest), right-over-oblance (the front of the upper garment is covered to the right), wide sleeves (as opposed to the narrow sleeves of the Manchus, Hu, and Mongols, which were suitable for riding and shooting), and wide clothes, which are knotted with cords and straps and hooks, and which are supplemented by a platter collar and a straight neckline. Structurally, the Hanbok is divided into ten parts: collar, lapel, train, kimono, sleeve, dickey, obeisance, belt, and lacing.

Historically, some nomads have had left lapels, and the Han have always had mostly right lapels.