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What benefits does this have over PNG, farbfeld, etc. ?

by fao_ 9y ago

agentgt 9y ago
If you bothered just navigating the site you would have found this page with a table (table II): https://nokiatech.github.io/heif/technical.html https://nokiatech.github.io/heif/technical.html
- fao_ 9y ago
  A lot of the items on that table really aren't very self-explanatory (Derived image, for example, obviously has a clearly defined meaning in this context, and it appears to be contrary to what I expect it to be). They assume a background that I don't have, and at the moment I don't feel that I have the time to spend obtaining it. I was asking for more of a layperson's comparison of the differences. Read it as "Why should I prefer HEVC over PNG, when they appear to be mostly identical".
  - deleted 9y ago
    [deleted]
masklinn 9y ago
PNG is a lossless format, it's pretty much pointless for photos. IDK about farbfelt but it seems like a TIFF competitor more than anything else. This is an (significant) improvement over JPEG.
- fao_ 9y ago
  > a lossless format [is] pretty much pointless for photos Why is that? Every edit you make to that photo means that the photo will degrade in quality. I always thought JPEG artifacts and compression lossage was a bad thing for photos, not a good thing?
  - deleted 9y ago
    [deleted]
  - thrillgore 9y ago
    The compromise is that with lossy compression, you can significantly shear the filesize used for retrieval, which granted isn't an issue of speed (but still is for bandwidth consumption).
  - floatboth 9y ago
    It's a very good thing when your internet connection is crap.
  - masklinn 9y ago
    > I always thought JPEG artifacts and compression lossage was a bad thing for photos, not a good thing? Sure JPEG artefacts are bad, but that can be mitigated (stop compressing so much). Your photos being an order of magnitude larger is worse, and inherent to the way PNG works.
  - Dylan16807 9y ago
    Generation loss is not inherent to lossy compression. The blame lies mostly or entirely on encoders. Here's an example of doing it right: https://www.youtube.com/watch?v=IheZzcYUV9w https://www.youtube.com/watch?v=IheZzcYUV9w https://www.youtube.com/watch?v=w7vXJbLhTyI https://www.youtube.com/watch?v=w7vXJbLhTyI

What benefits does this have over PNG, farbfeld, etc. ?

by fao_ 9y ago

What benefits does this have over PNG, farbfeld, etc. ?

If you bothered just navigating the site you would have found this page with a table (table II): https://nokiatech.github.io/heif/technical.html https://nokiatech.github.io/heif/technical.html

fao_ 9y ago
A lot of the items on that table really aren't very self-explanatory (Derived image, for example, obviously has a clearly defined meaning in this context, and it appears to be contrary to what I expect it to be). They assume a background that I don't have, and at the moment I don't feel that I have the time to spend obtaining it. I was asking for more of a layperson's comparison of the differences. Read it as "Why should I prefer HEVC over PNG, when they appear to be mostly identical".
- deleted 9y ago
  [deleted]

masklinn 9y ago

PNG is a lossless format, it's pretty much pointless for photos. IDK about farbfelt but it seems like a TIFF competitor more than anything else. This is an (significant) improvement over JPEG.

fao_ 9y ago
> a lossless format [is] pretty much pointless for photos Why is that? Every edit you make to that photo means that the photo will degrade in quality. I always thought JPEG artifacts and compression lossage was a bad thing for photos, not a good thing?
- deleted 9y ago
  [deleted]
- thrillgore 9y ago
  The compromise is that with lossy compression, you can significantly shear the filesize used for retrieval, which granted isn't an issue of speed (but still is for bandwidth consumption).
- floatboth 9y ago
  It's a very good thing when your internet connection is crap.
- masklinn 9y ago
  > I always thought JPEG artifacts and compression lossage was a bad thing for photos, not a good thing? Sure JPEG artefacts are bad, but that can be mitigated (stop compressing so much). Your photos being an order of magnitude larger is worse, and inherent to the way PNG works.
- Dylan16807 9y ago
  Generation loss is not inherent to lossy compression. The blame lies mostly or entirely on encoders. Here's an example of doing it right: https://www.youtube.com/watch?v=IheZzcYUV9w https://www.youtube.com/watch?v=IheZzcYUV9w https://www.youtube.com/watch?v=w7vXJbLhTyI https://www.youtube.com/watch?v=w7vXJbLhTyI