Apparently, filming the panels was not allowed at Supanova; here's the description for a video
on Youtube :
James and Oliver Phelps, well known for their role as Fred and George Weasley in the Harry Potter movies. This is the first 10 minutes of their panel before staff kindly informed us that we weren't actually allowed to be filming ^^;
Filmed at the first Gold Coast Supanova, Sunday 22nd April 2012, in Australia.