The video that made me ask this is this one [https://www.youtube.com/watch?v=djV11Xbc914](https://www.youtube.com/watch?v=djV11Xbc914)
A-ha: Take on me in 4k. How is this possible when 4k didn’t exist when the video was made?
In: Technology
The video would have been recorded onto film given its era. Photographic film has really high resolution we just don’t associate high resolution with the old analog TV era because the TVs didn’t have much to work with, but movie film is somewhere in the 4k-16k range depending on the size and quality of film. If they had a good quality recording then its just a matter of scanning it in really nicely and you have a 4k music video.
This is why old movies can also be upscaled to 4k(but they often have film grain and anomalies from years in storage) but more recent movies that were shot and edited digitally cannot be. If the movie was captured on an early digital camera at 2k resolution (roughly 1920×1080 or 1080P) then you don’t have the raw data to work with. You can fudge it in post processing(which your TV will do) but its not quite the same
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