gstreamer decoders

Oh I'm not worrying. I entirely believe you: ffmpeg is too influential for
MPEG LA not to know about it. But *if* the supposition (bandied about by
several here including IIRC Trelane) were true that ffmpeg had been
ignored because it was too ignorable or not a revenue generator or
something, then Trelane had just poked a dragon (or at least a troll) with
a stick. This is generally considered a bad idea, even if it turns out
that the dragon knows who you are and doesn't want to eat you today.