This app was mentioned in 3 comments, with an average of 1.33 upvotes
I use Movie Collection + Inventory.
You can scan barcodes and it will look them up and do more. Exports to CSV if you want.
https://play.google.com/store/apps/details?id=com.metosphere.moviefree&hl=en_US
Movie Collection & Inventory
https://play.google.com/store/apps/details?id=com.metosphere.moviefree