How to convert JPG images to AVIF with Python

Question

Python's Pillow doesn't seems to support AVIF files yet, and other packages like pyheif, only support reading. Is there any Python tool to convert jpg images to the new avif format?

Answer 1

You can to do this with pillow and pillow-avif-plugin:

from PIL import Image
import pillow_avif

JPGimg = Image.open(<filename> + 'jpg')
JPGimg.save(<filename> + '.AVIF','AVIF')

You need to install pillow AVIF to do that.

Answer 2

The best I could come with so far was installing libavif:

brew install libavif

And encode the jpg files directly by executing the avif encoder:

import subprocess


input_file = '/some-path/file1.jpg'
output_file = '/some-path/file1.avif'
subprocess.run(f"avifenc --min 0 --max 63 -a end-usage=q -a cq-level=18 -a tune=ssim {input_file} {output_file}", shell=True)

The options --min 0 --max 63 -a end-usage=q -a cq-level=18 -a tune=ssim are some recommended settings for AVIF images.