ffmpeg -i input.mkv -i metadata.txt -map_metadata 1 -codec copy output.mkv Where metadata.txt contains:
Using ffmpeg, a fan-editor or home server admin can: young sheldon s03e04 ffmpeg
title=Young Sheldon S03E04 artist=The Cooper Family comment=Hobbit references intensify Young Sheldon S03E04 is a fine episode of television — but in the hands of a home media archivist, it becomes a canvas for ffmpeg’s quiet brilliance. Whether fixing audio drift, normalizing loudness, or burning in subtitles for Sheldon’s rapid-fire science rants, ffmpeg turns a 20-minute comedy into a lesson in digital preservation. ffmpeg -i input