IMA HTML5 SDK issue 3.331.0
with 3.331.0, VPAID cannot be started after received loaded event.
NOT WORKING in 3.331.0 : start a VPAID when receive LOADED event from player after call init
WORKING in 3.331.0 : start a VAST VPAID after call init (not wait for loaded event)
WORKING in 3.331.0 : start a VAST video after receive LOADED event
WORKING in 3.331.0 : start a VAST VIDEO after call init (not wait for loaded event)