What I am trying to do it have a 0.5 sec. intervals on the timeline. Every item has a start and an end range on the timeline. The items can be draggable to change starting and ending range and also resizeable. Here is a sample mochup I have built:
Any suggestions or solutions will be highly appreciated.
Have a look at the chap links plugin timeline.
In Particular these demos
Iv used this plugin before to make a management system, adding editing, drag between groups.