>Why would I want to find out the total runtime of all videos in a directory? You wanna know how long will it take you to finish that lecture playlist you just

>Why would I want to find out the total runtime of all videos in a directory? You wanna know how long will it take you to finish that lecture playlist you just downloaded. You're a teacher and want to show some videos but you're limited in time. You want to know how many hours of music you've got.