Why can old films be in full HD or 4K quality today when in the times they were produced that screen resolution didn't exist? - Quora

In the Netflix basic plan, is the resolution 720p or 480p? - Quora

Does 4K mean double the resolution of 1080p? If so, where does the 4K come from if it is only double the resolution? - Quora

How come old films are available as HD videos nowadays? - Quora

Is there a loss in quality if you watch 1080p Blu-ray on a 4K screen? - Quora

When you see film or footage that's decades old, it usually looks noticeably lower quality than that of today. With as good as our film quality is these days, will this still

How come old films are available as HD videos nowadays? - Quora

How can old movies be upscaled to 4K? Were the pixels there to begin with or do they reconstruct the image later and add in what's missing? - Quora

Do old movies look better in 4k? - Quora

Why can old films be in full HD or 4K quality today when in the times they were produced that screen resolution didn't exist? - Quora