A Thai military court sentenced 10 people on Tuesday to up to five years in prison over audio and video recordings deemed insulting to the monarchy - the latest convictions in a series of cases brought since a coup more than a year ago.

Prime Minister Prayuth Chan-ocha, the army chief who seized power in a coup in May last year, has repeatedly vowed to vigorously enforce the country's lese-majeste laws, the toughest in the world, and to put on trial anyone perceived to be anti-monarchist.

The 10 were accused of distributing hundreds of video and audio clips, many on the Internet and via the Facebook page of an alleged anti-monarchy group, the "Banpodj" network.