I’m looking for a way to add artwork to podcast files that I download automatically. I’m using Hazel to monitor my iCloud Drive > Downloads folder for audio files that match certain criteria. If those criteria are met, my Mac Mini moves them out the iCloud Drive folder, renames them appropriately, and uses a script to upload them to Overcast. The only part I have not been able to figure out is how to add artwork to the podcast / audio file during the Hazel steps. I do not need to change the audio quality and re-encode it. I would prefer to not do that so that it runs quickly and smoothly.
Any help would be greatly appreciated.