Python script to convert raw images (CR2 in this case) to WEBP or other formats if needed. Works on computers where rawkit complains that rawlib is not installed and since I can't install it on my workcomputer I found this workaround. Requires a "input" and "output" folder in the same directory as the script.

raw2webp.py

from PIL import Image
import rawpy
import imageio
import numpy as np
import os

def main():
	paths = os.listdir("input")
	for path in paths:
		raw = None
		path_in = r"input/" + path
		path_out = r"output/" + path.replace("CR2", "webp")
		with rawpy.imread(path_in) as raw:
			buffered_img = np.array(raw.postprocess())
			#imageio.imsave(path_out, rgb) # this worked for jpg or png images but webp is not a supported format of imsave. though the rest of the code above and below need to be adapted to make it work again
			height, width, _ = buffered_img.shape
			try:
				#image = Image.frombytes('RGB', (raw.sizes.width, raw.sizes.height), buffered_img)
				image = Image.frombytes('RGB', (width, height), buffered_img)
				image.save(path_out, "WEBP", quality=90)
				print(path_in, "->", path_out)
			except Exception as e:
				print("Error while handling the file " + path_in +" :")  # I've only had one encoding error, not sure how to deal with it, for now I ignored that file and converted it manually, so I just ignore the error and keep the script running
				print(e)
			finally:
				pass

if __name__ == '__main__':
	main()

requirements: pip install Pillow numpy rawpy

revision 2 corrects a bug with portrait orientation pictures that weren't sized correctly