The first thing they’ll want is a restraining order preventing them from releasing any more videos until the “investigation” is completed.
Easy way around that is for the videographer to put copies of the additional videos into the hands of a sympathethic Congressman or Senator. Now.
If Lynch slaps a restraining order, the Congresman can hold hearings to review what’s in the videos. Which were provided before the restraining order. Lynch can’t do jack about it due to that pesky separation of powers and coequal branches stuff in the Constitution.