George Brandis has been caught on camera calling his state party colleagues "very, very mediocre" in the latest embarrassing misstep for the Attorney-General.

The same tape also recorded Senator Brandis revealing the Coalition was alarmed about the growing popularity of Pauline Hanson's One Nation Party.

Preparing to deliver a special address at the Victorian Liberal Party annual meeting on Sunday, Senator Brandis was recorded criticising the Queensland state opposition and Labor government.

The video shows Victorian Liberal Party president Michael Kroger asking Senator Brandis how the Liberal National Party opposition and its leader, Tim Nicholls, were performing ahead of the next state election in late 2017 or early 2018.