Whenever you want to embed YouTube videos in your blog posts, you can specify the start and end time, thereby making it easy for viewers to focus on a particular scene that begins from 'xx: xx' seconds and ends in 'yy: yy' seconds. All you have to do, is to add ?start=xx&end=yy&version=3 at the end of the Youtube video src (URL) E.g If original embed code is this : and I want it to start playing from 1min45secs and end in 2mins 01secs, I will use the embed code below:

Source: planet.ogbongeblog