You actually had all the information You needed...
1) How to remove the controls - 2 of my posts ago. And You did that in a previous example - what prevented You from doing the same again?
2) I've mentioned using "On Scene Load" as "autoplay" in the last post. (I've also explained and used this trigger in most of other examples I've sent You via PM).
The function "videosynctest1" is where all the action happens - You quoted this code in your third & fourth posts in this thread. You simply use the "On Scene Load" handler to trigger it as in virtually all the other example I've sent You.
Demo: No control bar, "autoplay" on scene load, synced to timeline.
ch3_JHSv5.hype.zip (2.2 MB)