I have read a data array into pillow via the Image.fromarray method. While I am able to bring it into pillow and successfully paste it onto another image in memory, img.resize((1920,1080)) and img,thumbnail((1920, 1080)) have no effect (and no error).
That's because this operations create copies affected by the corresponding transformation. Have you tried img = img.resize((1920, 1080))?
Issue using Python PIL/pillow to resize image