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I know how to buy xorg users (lemmy.world)
submitted 6 months ago by Waffelson@lemmy.world to c/linuxmemes@lemmy.world
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[-] onlinepersona@programming.dev 5 points 6 months ago

Thank you.

I assume HDR has to be explicitly encoded into images (and moving images) then to have true HDR, otherwise it's just upsampled? If that's the case, I'm also assuming most media out there is not encoded with HDR, and further if that's correct, does it really make a difference? I'm assuming upsampling means inferring new values and probably using gaussian, dithering, or some other method.

Somewhat related, my current screens support 4k, but when watching a 4k video at 60fps side by side on a screen at 4k resolution and another 1080p resolution, no difference could be seen. It wouldn't surprise me if that were the same with HDR, but I might be wrong.

Anti Commercial AI thingyCC BY-NC-SA 4.0

Inserted with a keystroke running this script on linux with X11

#!/usr/bin/env nix-shell
#!nix-shell -i bash --packages xautomation xclip

sleep 0.2
(echo '
spoiler Anti Commercial AI thingy [CC BY-NC-SA 4.0](https://creativecommons.org/licenses/by-nc-sa/4.0/) Inserted with a keystroke running this script on linux with X11 ```bash' cat "$0" echo '``` :::') | xclip -selection clipboard xte "keydown Control_L" "key V" "keyup Control_L"

:::

[-] eager_eagle@lemmy.world 5 points 6 months ago

yes, from the capture (camera) all the way to distribution the content has to preserve the HDR bit depth. Some content on YouTube is in HDR (that is noted in the quality settings along with 1080p, etc), but the option only shows if both the content is HDR and the device playing it has HDR capabilities.

Regarding streaming, there is already a lot of HDR content out there, especially newer shows. But stupid DRM has always pushed us to alternative sources when it comes to playback quality on Linux anyway.

no difference could be seen

If you're not seeing difference of 4K and 1080p though, even up close, maybe your media isn't really 4k. I find the difference to be quite noticeable.

[-] onlinepersona@programming.dev 1 points 6 months ago* (last edited 6 months ago)

yes, from the capture (camera) all the way to distribution the content has to preserve the HDR bit depth.

Ah, that's what I thought. Thanks.

If you’re not seeing difference of 4K and 1080p though, even up close, maybe your media isn’t really 4k. I find the difference to be quite noticeable.

I tried with the most known test video Big Buck Bunny. Their website is now down and the internet archive has it, but I did the test back when it was up. Also found a few 4k videos on youtube and elsewhere. Maybe me and the people I tested it with aren't sensitive to 4k video on 30-35 inch screens.

Anti Commercial AI thingyCC BY-NC-SA 4.0

Inserted with a keystroke running this script on linux with X11

#!/usr/bin/env nix-shell
#!nix-shell -i bash --packages xautomation xclip

sleep 0.2
(echo '
spoiler Anti Commercial AI thingy [CC BY-NC-SA 4.0](https://creativecommons.org/licenses/by-nc-sa/4.0/) Inserted with a keystroke running this script on linux with X11 ```bash' cat "$0" echo '``` :::') | xclip -selection clipboard xte "keydown Control_L" "key V" "keyup Control_L"

:::

[-] accideath@lemmy.world 1 points 6 months ago

aren‘t sensitive to 4K video

So you’re saying you need glasses?

But yes, it does make a difference how much of your field of view is covered. If it’s a small screen and you’re relatively far away, 4K isn’t doing anything. And of course, you need a 4K capable screen in the first place, which is still not a given gor PC monitors, precisely due to their size. For a 21" desktop monitor, it’s simply not necessary. Although I‘d argue, less than 4K on a 32" screen, that’s like an arms length away from you (like on a desktop), is noticeably low res.

[-] onlinepersona@programming.dev 0 points 6 months ago

So you’re saying you need glasses?

No. Just like some people aren't sensitive to 3D movies, we aren't sensitive to 4k 🤷

Anti Commercial AI thingyCC BY-NC-SA 4.0

Inserted with a keystroke running this script on linux with X11

#!/usr/bin/env nix-shell
#!nix-shell -i bash --packages xautomation xclip

sleep 0.2
(echo '
spoiler Anti Commercial AI thingy [CC BY-NC-SA 4.0](https://creativecommons.org/licenses/by-nc-sa/4.0/) Inserted with a keystroke running this script on linux with X11 ```bash' cat "$0" echo '``` :::') | xclip -selection clipboard xte "keydown Control_L" "key V" "keyup Control_L"

:::

[-] accideath@lemmy.world 3 points 6 months ago

People aren’t "sensitive" to 3D movies due to lack of stereoscopic vision (That’s typical for people who were cross-eyed from birth for example, even if they had corrective surgery). Or they can see them and don’t care or don’t like the effect.

If you’re not "sensitive" to 4K, that would suggest you‘re not capable of perceiving fine details and thus you do not have 20/20 vision. Given of course, you were looking at 4K content on a 4K screen in a size and distance, where the human eye should generally be capable of distinguishing those details.

this post was submitted on 10 Apr 2024
373 points (95.6% liked)

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