[FFmpeg-user] Glossary: Nyquist

[Mark Filipak (ffmpeg)]

On 10/01/2020 10:38 AM, Eduardo Alarcón wrote:
> Mostly the noun/adjective part, the part [1] about SD media and mastering,
> seems to be anecdotal information more than a definition of what is the
> Nyquist principle, you say that the images are undersampled, but what does
> it mean? what is the impact, the images look blurry?, may be you defined
> "undersampling" in other part

Thanks for your thoughts. They're important. Yes, I could write more. And, Yes, the note is 
anecdotal. I felt that the note introduces the idea that something can be undersampled and with a 
concrete example of something that is undersampled so that the concept becomes 'real'. Can you 
suggest better wording? I'd like to see it.

Regarding what undersampling means, it's a common term that can be looked up in a general dictionary 
rather than a dedicated glossary. That's just my opinion of course. Where do you think the line 
should be drawn?

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