cavif-bin

cavif bin-wrapper that makes it seamlessly available as a local dependency

> I hope that this package will be part of the imagemin plugins as an imagemin-avif WIP

About AVIF

alt="AVIF logo" width="180" height="100">

[AVIF] offers significant compression gains vs. JPEG and WebP, with a recent Netflix study showing 50% savings vs. standard JPEG and > 60% savings on 4:4:4 content

Underhood

cavif-bin use cavif v0.6.6 with BSD 3-Clause License and Copyright (c) 2020, Kornel, as a AVIF coder.

$3

| Option | Description |
| ------ | ----------- |
| --quality=n | Quality from 1 (worst) to 100 (best), the default value is 80. The numbers have different meaning than JPEG's quality scale. Beware when comparing codecs. |
| --speed=n | Encoding speed between 1 (best, but slowest) and 10 (fastest, but a blurry mess), the default value is 1. Encoding of AVIF is pretty slow, so you need either a) beefy multicore machine b) avoid large images c) patience. |
| --overwrite | Replace files if there's .avif already. By default existing files are left untouched. |
-o path | Write output to this path instead of samefile.avif. If multiple input files are specified, it's interpreted as a directory. |
| --quiet | Don't print anything during conversion. |
| --premultiplied-alpha | Warning: currently incompatible with libavif. Improves compression of transparent images by clearing RGB of fully transparent pixels and lowering quality of semi-transparent colors. |
| --dirty-alpha | Don't change RGB values of transparent pixels. By default irrelevant color of transparent pixels is cleared to avoid wasting space. |
| --color=rgb | encode using RGB color space instead of YCbCr color space. Makes color closer to lossless, but makes files larger. |

Install

``bash
npm install cavif-bin
`

Usage

`js
const {execFile} = require('child_process');
const cavif = require('cavif-bin');

execFile(cavif, ['input.png','--quality=74', '-o', 'output.avif'], err => {
if (err) throw err;
console.log('Image is converted!');
});
`

CLI

You can install cavif globally.

`bash
npm install --global cavif-bin
`

And use it as a CLI command.

`bash
cavif --help
`

AVIF browsers support

* Chrome Desktop 85+
* Firefox 63+ (with media.av1.enabled activated)
* Firefox for Android 64+ (with media.av1.enabled and media.av1.use-dav1d activated)
* Edge 18+ (with AV1 Video Extension` installed)

License

MIT © nucliweb

[AVIF]: https://aomediacodec.github.io/av1-avif/