ролики в 4К - YouTube
https://www.youtube.com/playlist?list=PLD9E5F7191498DA22
Legend 4K: A Journey Through Iceland. Evosia Studios. Israel stock video footage highlights in 4K UHD. StockFootage.com.
4K resolution - Wikipedia
https://en.wikipedia.org/wiki/4K_resolution
4K resolution refers to a horizontal display resolution of approximately 4,000 pixels. Digital television and digital cinematography commonly use several different 4K resolutions.