gstreamer decoders

That's not my take on the issue, nor could it be since copyright and patent licenses are orthogonal.

What I'm saying is that only corporations with deep pockets in certain parts of the world need to worry at all. You seem convinced that you are such an entity. Very well, good luck with your HTML 5 efforts. I don't care what browser makes my life without Flash more bearable, but I'm certainly willing to switch browsers to enjoy the privilege.

Then again, I'm convinced that you will punt and use system infrastructure to decode video in the medium-term future. Hopefully you will manage without hurting your market share too much...