Recording in a video archivist's library (4)

I believe the answer is:

tape

(Other definitions for tape that I've seen before include "Record; cassette" , "Adhesive strip; record" , "Race finishing line strip" , "Ribbon" , "Video recording" .)

I've seen this clue in The Washington Post.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.