FFMPEG duration
 

When I run /usr/local/bin/ffmpeg -i "video.mp4"

I can see data like: Duration: 00:01:17.92, start: 0.023220, bitrate: 1593 kb/s

I want to use that duration value later on in the ffmpeg command, for example duration/2, so drawtext will show watermark in middle of video.

Anyone know the variable to use to show duration, perhaps some like this %duration%?