how to embed an excerpt of a youtube video ~ since I cannot memorise it or find the original link anymore...

for some reason I cannot find the post with the link to the 'lesson' how to embed only a certain part of a YT video into your blogger post. at least, here is the principle how to do that

<iframe allowfullscreen="" frameborder="0" height="***" src="http://www.youtube.com/embed/_____?rel=0&amp;start=***&amp;end=***&amp;autoplay=0" width="***"></iframe>

instead of *** insert the number in pixels (usually 0 for border, 360 for height and 640 for width), instead of _____ insert the code of the video on YT, after 'start=' and 'end=' insert the time of start and end in seconds