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HDR‑Infused Emoji

(sharpletters.net)
274 points tabletcorry | 2 comments | 17 Apr 25 14:42 UTC | HN request time: 0.415s | source
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ionwake ◴[17 Apr 25 16:07 UTC] No.43718808[source]▶
Sorry for the noob question but I think finally someone in this thread can answer this for me. Sometimes when I see a youtube short video it looks like its HDR is whacked up by like 500% as per the image in this page, but Im confused how this could be done. Is video processing on the video before it is uploaded somehow giving it some sort of encoding which chrome just wacks up? Or is it the hardware doing it and encoding it a certain way?

I am not talking about a slight brightness increase, I am talking Ill be scrolling youtube and suddenly this video is like a portal into another dimension its so bright.

Can anyone explain how its done?

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detaro ◴[17 Apr 25 16:15 UTC] No.43718922[source]▶
The video is marked as containing a different color space with a higher brightness/color range. That could either be because the initial camera recorded it that way (e.g. iPhones can do that) or because someone took a "normal" video and edited it.
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ionwake ◴[17 Apr 25 16:20 UTC] No.43719007[source]▶
Would this be specific software on the iphone used to record a video ? Or a default setting on a certain iphone? I ask because I only very rarely see this whacked up HDR youtube short, like super rarely.
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1. detaro ◴[17 Apr 25 16:29 UTC] No.43719119[source]▶
Fairly sure a stock iPhone can do it, but you might need to enable it explicitly for compatibility reasons? And depending how you edit or upload the video it could get lost there too, it's still something where support is not really universal.
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2. ionwake ◴[17 Apr 25 17:34 UTC] No.43719904[source]▶
Interesting Im starting to think that perhaps only certain video software on an iphone would allow it - which explains why its so rare?