IME, youtube ads seem to come on dynamically, with dynamic amount of "forcible viewing" time, eg 5sec, 30sec, 60sec, etc. It does a pretty damn good job of showing me the most ad without my walking away in disgust. For example, I was on a binge of science videos and the ads went from 0 sec, to 15, to 30, in lock-step with my curiosity.
Well, you can use what you want. We have no vested interest.
>still not able to block youtube ads, thanks, but no thanks.
But you're wrong, of course. And you've not given enough information for people to accurately help you, if they wanted to do so despite your tone.
On both Chrome and on Opera, with uBlock I don't get YouTube adverts. (Albeit with some more filter tickboxes ticked, which may or may not make a difference.)
If you want to try and get uBlock blocking your YouTube adverts, I'm sure lots of us would be willing assist. More so if you weren't an ass about it.
Edit: I'm using HTML5 instead of Flash, that could be the key difference.