BOOST_REQUIRE_EQUAL (a.size(), 4U);
auto i = a.begin();
BOOST_CHECK (i->period == DCPTimePeriod(DCPTime(0), DCPTime(960000)));
BOOST_REQUIRE_EQUAL (a.size(), 4U);
auto i = a.begin();
BOOST_CHECK (i->period == DCPTimePeriod(DCPTime(0), DCPTime(960000)));