I want to have ability to trim the Youtube clips that is no affect to the original video.
Yes, this feature is what I am looking for.
I am using affiliate video pro in my WP now, it come with a feature where I can insert a video, and the player only displays certain portion in the video. eg start at 1 minute, end at 2 minute 40s.
This trimmer will come very handy when I want to display certain step within the video without need to play the whole video.