> "You can't compress noise." Well, humans can't tell the difference between two... | Hacker News

Hacker Newsnew | past | comments | ask | show | jobs | submit

		leeoniya on Sept 14, 2021 \| parent \| context \| favorite \| on: Q1K3 - An homage to Quake in 13kb of JavaScript > "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 on Sept 14, 2021 [–]

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

leeoniya on Sept 14, 2021 | [–]

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

eurasiantiger on Sept 15, 2021 | | [–]

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

Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact