Get length of a video using regex and ffmpeg

Question

From the following ffmpeg -i output, how would I get the length (00:35)--

$ ffmpeg -i 1video.mp4

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from \'/Users/d         


        

Answer 1

Duration: (\d\d):(\d\d):(\d\d(\.\d\d)?)

should work. Whatever your language's $1 is will be the hours, $2 will be the minutes, $3 will be the seconds, and $4 will be just the centiseconds if they are exist.