If you've got Foxtel and are unaware there is a show called Moshcam: Live & Kicking on Aurora Community Channel (channel 183). It's on Saturday nights at 8pm and is repeated during the week. It's mainly rock bands from indie pop through to metal. They show assorted songs from band's live shows in Sydney and while they don't show the huge bands it's also not really unsigned bands. Bands the size of like The Drones, Regurgitator, Jebediah etc. but they're also recently starting to show some international bands.
They've got their catalogue of all their live videos on their website: http://www.moshcam.com