How can one search and sort video files by duration

I'm familiar with seeing duration of video files on my Mac. However when I would like to search for any duplicate files that have the same duration, it appears this is not possible as search results dont seem to allow adding the duration column. One solution I'd like to try is to take duration data and append it in comments which can be visible in search window. Is there a way to use Automator to look at the file info and append the duration data to the comments field or is this something that must be done in AppleScript?