'New era' for South African athletics

Wayde van Niekerk broke the 400m world record to win gold for South Africa in the most successful Olympics ever for the country, which was banned for decades from taking part in the Olympics during apartheid.

Elana Meyer, who won a silver medal in the 10,000m race when the ban was lifted in 1992, tells the BBC that this year's success is a beginning of a new era in South African athletics.

Video producer: Christian Parkinson