Actually, I wouldn't recommend posting the former (or keep it up for long), because we would increase the risk of the organizers of the convention to put a stop to such events (such as this panel) or add more restrictions. I know you're not the only one to do that, though. I'm just saying, though.
I think the latter is fine (I was told by one that they only crack down on the videos of people showing the footage of video previews, though I've heard none should be recorded at all -- kinda confusing). Ridureyu did record the entire panel, minus the video of the preview.