You first need to study the SDK documentation
And the examples. There is an example of
How to use roimagecanvas with rovideoplayer
Once you have mastered the examples you will
Have discovered how to put any image on your
Canvas including your track bar which you
Can create the png or preferably jpg files with
A multitude of freeware paint programs out there
As far as a tracking algorithm , that is another ball game !
Your next battle will be to capture every message by rovideoplayer
To discover how it works and the problems you may encounter
And how you should deal with them
My Channels: 2D API Framework Presentation: https://owner.roku.com/add/2M9LCVC
Updated: 11-11-2015 - Completed Keyboard interface
The Joel Channel ( Final Beta )