This is the same wedding film, digitised once by a company around 2013 offering Frame by Frame film transfers. Many of these companies still use the same equipment to this day.
It's compared with a new scan made in 2021 using a FilmFabriek HDS+ 4K film scanner.

You can see there's a lot more detail captured, and also the lighting is much more even. The scanner protects whites from blowing out, and has enough dynamic range to see into the shadows. Compare the bright white wedding dress.
The scanner files can be further edited to correct colour.

if you've had your film digitised before, it's great that someone took the care to back them up onto another form of media. Although technology has evolved hugely since DVD and VHS were the standard. The scanners available today produce a much better looking transfer of film than what was available when you may have had them transferred.
It's only recently that digital camera tech has actually caught up to a level capable of capturing the incredible detail in film grain.

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