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geekhack Community => Off Topic => Topic started by: tp4tissue on Sat, 04 September 2021, 12:00:54

Title: Eagle-Eyed TEST.
Post by: tp4tissue on Sat, 04 September 2021, 12:00:54

Without looking at the file size.

WHICH image is web 4K stream,  Which is 4K bluray.

1
[attachimg=1]

2
[attachimg=2]

Title: Re: Eagle-Eyed TEST.
Post by: Coreda on Sat, 04 September 2021, 12:19:31

First one appears to have more noise intact and better rendering of reds suggesting improved chroma subsampling. So I'd guess first is the BD.

What I'm assuming is the web stream looks very similar for that shot though.

Edit: marked in spoilers.

Title: Re: Eagle-Eyed TEST.
Post by: tp4tissue on Mon, 06 September 2021, 12:08:56

Pretty sharp. But I suspect coreda was already an expert pre test based on his explanation..

Title: Re: Eagle-Eyed TEST.
Post by: noisyturtle on Mon, 06 September 2021, 12:11:52

I might argue if you need to stare at a still image like it's a Magic Eye to see quality differences, perhaps it's totally arbitrary.

Title: Re: Eagle-Eyed TEST.
Post by: tp4tissue on Mon, 06 September 2021, 12:14:55

Quote from: noisyturtle on Mon, 06 September 2021, 12:11:52

I might argue if you need to stare at a still image like it's a Magic Eye to see quality differences, perhaps it's totally arbitrary.

That's the whole purpose of compression is to look for that line.  I think they've got the science down, but here and there you really do catch the compression artifacts.


If you look at the little yellow dude, he's a different color due to the compression.