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ERT Sports HD (Greek: ΕΡΤ Sports HD) is a Greek free-to-air television channel, owned by the Hellenic Broadcasting Corporation, the state broadcaster of Greece. It is the first high-definition television channel in the country and started broadcasting on 27 April 2011 in several large cities such as Athens, Thessaloniki and Alexandroupoli. ERT HD broadcast such important international events as the Olympic Games, the UEFA European Championship and the Eurovision Song Contest. It broadcasts at 1920x1080i50 lines, encoded at Advanced Video Coding on the DVB-T standard.