There is something wrong with the most recent videos.

They have black squeres all over the place. It happens ONLY on gamespot's most recent videos, however those re-uploaded youtube work just fine. Whats happening?

That's happening to me too, even if I stick to the very same codecs from my past videos - WMV9 and WMA2 for .wmv files.

Like this. It looks fine when I play it locally but it turns into crap after uploaded.

I have gotten this more recently as well, probably going on two to three weeks but even more so than every now. Nothing on my system as changed, and all other video elsewhere looks just fine.