Deep Nostalgia AI is a platform that utilizes artificial intelligence technology to convert old photos into videos. It employs advanced machine learning algorithms to animate the faces in the photos, creating lifelike movements and expressions that vividly capture precious memories. The importance of this technology lies in its unique and touching way of recreating and preserving historical images, holding significant emotional value for families and individuals. Product background information indicates that Deep Nostalgia AI is continuously improving, though it currently has some limitations, such as occasional flaws in animation and restrictions on animating group photos. Pricing includes a 50% discount on annual plans with the discount code 'CH5', and detailed pricing information can be found in the 'Pricing' section of the website.