The is used to restore old films. If you see a movie remastered in "12K" (like Willy Wonka & the Chocolate Factory 4K remaster), the source was scanned at 12K, but you watch it at 4K. This is called supersampling . A 12K scan downsampled to 4K looks sharper than a native 4K scan.
The short answer is —at least not labeled as "9K." 9k movie in
9K Movies: A Comprehensive Review and Guide ... - AliExpress The is used to restore old films
Based on the search term , the most likely intent is a search for the popular movie download and streaming website 9xmovies (often typed as "9k movies" due to the similarity in pronunciation and the "x" often being associated with "x" marks or crossed lines). the source was scanned at 12K