[malft]

"You can't compress noise." Well, humans can't tell the difference between two snippets of white noise.

It'll be fun. Remember jbig? (can't find the source, but iirc "most of what we're sending is text, so our fax can detect identical characters and reuse them! genius! [ten years and several bonuses later] um boss, our fax swapped a few ... 'identical' ... digits in someone's legal documents, so you have to appear in court now. also their entire scanned document archive is potentially corrupted and they may want damages")

I guess the 'no photos on the internet' people will have the last laugh; they won't be the ones seen criming in the background of someone else's blurry holiday photo.

[leeoniya]

> "You can't compress noise." Well, humans can't tell the difference between two snippets of white noise.

new codecs (decoders?) have something called Film Grain Synthesis. i think you have to encode the content before this is applied at the source?

i'm not sure this actually madebit into the AV1 standard or encoders yet.

tried encoding Hurt Locker a few years ago and the film grain added to it really put the hurt on x264/handbrake. the final file size was nearly as big as the original content. back then the same amount of cpu burning could have probably found a full btc :D

related: https://news.ycombinator.com/item?id=17536727

[eurasiantiger]

Film Grain effects were available in ffdshow since forever, but it’s unmaintained.

[leeoniya]

that's not the same as having them in an open codec standard, right?

[eurasiantiger]

Well, no, but generally it’s something applied after decompression to decrease perceivable compression artifacts.