Is college football to blame for NFL woes?

College football in America is multi-billion dollar sport. The top ten largest sport venues in the US are all university football stadiums - not in America's professional football league, the NFL.

But with the NFL hit by abuse scandals and the behaviour of its athletes under scrutiny, some are now wondering if college, and even high school, football might be partly to blame.

The BBC's Aleem Maqbool reports.