Whilst the Cobras bite/venom isn't as lethal as that of some Australian snakes , it is still responsible for the deaths of around 10,000 people a year in India ..... and it's definitely not a snake to be messed around with.
Most of these people who do the kind of thing seen in that video HAVE been bitten at some stage , but have usually had anti-venom handy to rebuff the snakes venom ..... and some reckon they are bitten that often they become 'immune'.