North Korea's parliament has awarded leader Kim Jong Un a new post, adding to his long list of titles.

The North's state-run television KRT released a video of Kim attending its Supreme People's Assembly and said Kim was appointed as the chairman of the State Affairs Commission of Democratic People's Republic of Korea (DPRK), which appears to be newly formed and whose function was not immediately clear.

He also has the titles of the Dear Respected Comrade Kim Jong Un, Chairman of the Workers' Party of Korea, First Chairman of the National Defence Commission of the Democratic People's Republic of Korea and Supreme Commander of the Korean People's Army.

Kim also holds the rank of marshal in the North Korean military, and is more usually referred to "our marshal" in propaganda and common parlance.

The parliament meets once or twice a year to formally approve budgets or policies set out by the ruling Workers' Party. It also has the authority to grant Kim new titles or positions within North Korea's opaque leadership structure.

The meeting was called to implement policy aims stated in a rare Workers' Party congress in May, during which Kim Jong Un announced a five-year economic plan.