downing centre local court showed the security footage of the violent altercation between irishman barry lyttle and his younger brother , patrick , during a sentence hearing on wednesday .
prosecutor alex poulos called for barry , from belfast in ireland 's north , to face a full-time jail term as it was the ` only appropriate sentence ' after the violent incident in sydney in january .
barry lyttle has been charged with grievous bodily harm and has pleaded guilty to the charge .