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Comment by Adamantcheese | Hacker News Reader

So it's basically what webp is to webm? Also how does it compare to my favorite image format, FLIF? http://flif.info/

It's more like a PowerPoint document with any number of WebM embeds and other files.

HEIF/AVIF is a complex kitchen sink of all the features that a mobile camera app may dream of, so it supports arbitrary collections of images and videos, e.g. "live" photos, tiles, bursts, subtitles, multiple layers, multiple versions.

So it's basically the new MNG?

FLIF has much better lossless compression than AV1 but much worse lossy compression.

About 95% smaller than FLIF I would think.

How is it 95% smaller? FLIF is a lossless compression, and AV1 in lossless mode can't do magic. It can't do 95% better.

https://wyohknott.github.io/image-formats-comparison/report....

FLIF is reported at 59.57% avg space savings

AV1 (2018-02-22) is reported at 66.02% avg space savings

presumably it's 95% smaller because it's not limited to lossless mode?

FLIF is also not limited to lossless mode, http://flif.info/lossy.html

And FLIF's lossy mode is as good as AV1's?

That part I don't know. I haven't seen a comparison between them, but it's compared well at least against BPG, or whatever the h264 based format was. I don't think i've seen a comparison against h265, let along AV1. It'd be interesting to see. Even if they're about as good, I like FLIF's setup better since it enables progressive decoding which could be a big step up for slower connections.

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