Film show: 'Ma Rainey's Black Bottom' looks headed for Oscar success

We look at the major contenders for this year's Academy Awards, as film critic Lisa Nesselson gives us her assessment of "Ma Rainey's Black Bottom", which is nominated for five Oscars. The screen adaptation of August Wilson's 1982 play stars Chadwick Boseman as a talented young horn player in the actor's last movie performance before his death last year.