"As this will come as a surprise to a lot of people, I think it's time for me to hang the boots up at the end of my contract."
In the video, he paid tribute to the Rabbitohs and also former club Melbourne Storm.
"It (rugby league) is what I've known. I feel like I have given everything I have to the game, and it's given me everything that I have in my life," he said.
"I've been fortunate to play with two fantastic clubs in the South Sydney Rabbitohs and the Melbourne Storm.
"If it wasn't for the Storm I would not have had the chance to fulfil my life's dream.
"At the Rabbitohs, and as I've grown older, I've become a leader, a captain and a mentor to the current and next generation of young Rabbitohs to wear this proud red and green jersey.
"I've been fortunate enough to represent my country, my state, and my people and those are memories that I will cherish forever."