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A new PNG spec

(www.programmax.net)
618 points bluedel | 2 comments | 24 Jun 25 13:01 UTC | HN request time: 0.497s | source
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poisonborz ◴[25 Jun 25 10:11 UTC] No.44375523[source]▶
Not backwards compatible. We just add it to that nice cupboard "great advanced image formats we will forget about".

Society doesn't need a new image format. I'd wager to say not any new multimedia format. Big corporate entites do, and have churning them out at a steady pace.

Look at poor webp - a format pushed by the largest industry players - and the abysmal everyday use it gets, and the hate it generates.

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1. ProgramMax ◴[25 Jun 25 18:01 UTC] No.44380128[source]▶
It is very backwards compatible. I'm not sure why you thought that.

We jumped through quite a lot of hoops to make sure old software will be able to display new images. They simply won't display them optimally. But for the most part, that would be because the old software wouldn't display images optimally anyway. So the limit was the software, not the format.

What I mean by this is old software that treats everything as sRGB wouldn't correctly show a Display P3 image anyway. But we made sure it will still display the image as correctly as it could.

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2. account42 ◴[26 Jun 25 11:04 UTC] No.44386167[source]▶
The sample HDR images don't show correctly in image viewers even though the colors used fit into the sRGB gamut (or at least have good approximations in there). That's not really backwards compatibility.