Folder contains lots of videos, how to find duration of the folder?

[chipandegg]

I've got a folder full of music tutorials in .mp4 format. When I click on one it it will give the Duration of that single video.

Is there way of finding the duration of the whole folder that contains the videos? I checked out Get Info on the folder though it doesn't say it there. I know I could just click on each one and add up the times but is there a faster way.

Cheers