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Old 13th January 2018, 17:25   #11  |  Link
johnmeyer
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Join Date: Feb 2002
Location: California
Posts: 2,691
Quote:
Originally Posted by manono View Post
I disagree. If the number is supposed to refer to the framerate as it does in every other similar use, then it's 25 frames per second and not 50 frames per second. That would be 50 fields per second. If i or p refers to either the content or how it was encoded, then it's 25 frames per second interlaced. I'm not as much someone as the BBC but, in my opinion, this 60i and 50i nonsense created confusion where there was none before. It was a creation of corporations and their PR stooges to make this 50i or 60i sound somehow better than 25i or 30i.

Following the 50i line of reasoning, then you'd also call it 1080i 50? No, of course not. It's 1080i 25. And 25i.

But, as pdr also said, "Not this again."
I totally agree with your logic, and have the same problem with "50i".

However, that said, all I was doing was explaining how the term is actually used. And, unfortunately for those of us who think like manono, there is no 25i, and 50i refers to 50 fields per second whereas 50p refers to 50 frames per second.

But don't take it from me. Here is the definition of 50i from no less of an authority than Sony:

50i definition by Sony

So, like many other words and phrases in the English language that don't make sense, we are stuck with 50i as the term for interlaced PAL video.
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