Constructing YouTube FLV URL on client-side without any server-side script 02 Apr 2007 It seems, there is a easier way of constructing YouTube! FLV URL on client-side without using any server-side script. We need get the YouTube video_id from any of following places:- YouTube! video URL, which looks this (video_id in red): http://www.youtube.com/watch?v=V3BsjxDZJM0 http://www.youtube.com/v/V3BsjxD