I archive my movies onto my iMac on iTunes and then play them over AppleTv units to my TVS. Doing it that way works for playing the files, but the cover art and the meta data does not just appear. I have tried a few methods in the past such as Identify and Meta X but they didn’t always work on my files. The automated lookups failed for various reasons such as misspelled titles or adding the year to the file name to differentiate between a classic movie and a remake movie. If the lookup failed I was often stuck with the wrong meta data with no way to change it using the automated options.
Recently I came across Subler. Which works great for my needs. The searching isn’t really as automated as the searching in Identify or Meta X. You have to manually add the files to the program, hit search, find the correct entry, then add that entry to the queue. If there is a way to get it to auto search from your iTunes library I have yet to figure out that process. Where Subler shines is its manual input. If a file is misspelled or has extra text I can fix the spelling or delete the extra text and search a for the info a second time. Subler allows you to select the proper meta info and it allows you to choose from multiple artwork choices.