QOA, the Quite OK Audio Format • Hacker News Board

Re: QOA, the Quite OK Audio Format

#81

Post by jefftk » Sat, Feb 04, 2023, 1:11 AM UTC

Turing_Machine wrote: post #79

jefftk wrote: post #53

Earlier quoted context omitted.

Flash was a plugin, not a "native API built into browsers".

A distinction with no difference. Flash used to run on every standard browser. Now it doesn't exist.

It's an important difference if you're trying to predict how browsers will behave in the future. They're generally very conservative about removing platform features that people depend on, but this doesn't cover plugins.

Re: QOA, the Quite OK Audio Format

#82

Post by bArray » Sat, Feb 04, 2023, 10:28 PM UTC

Potentially the killer application for this would be those wireless earbuds and music players. I would like to hear what this sounds like at lower bit rates when signals become strained.

Really cool work!

Re: QOA, the Quite OK Audio Format

#83

Post by p0nce » Sun, Feb 05, 2023, 6:16 PM UTC

creshal wrote: post #55

adgjlsfhk1 wrote: post #45

Earlier quoted context omitted.

you'd have to totally redesign the format. QOI is very specialized on 8 bits per channel (and RGBA)

The physical layout, sure, but would it conceptually involve more than just defining twice as large chunk types for 16 bit channels? Unless I'm missing something, it should be fairly uncomplicated code-wise?

I've extended QOI for 10-bit here: https://github.com/AuburnSounds/gamut (and also grey and grey+alpha). So it's a separate incompatible codec yes.

The problem with a QOI that would have 16-bit is that lossless becomes more expensive, exact match in the color table is more rare too and not worth it anymore.

You will start to need more prediction modes + offsets.

Using QOIX for elevation maps in PBR currently.