Porter Bibb, managing partner at Mediatech Capital Partners LLC, talks about the performance of media conglomerates in the digital age.   Bibb, speaking with Erik Schatzker and Deirdre Bolton on Bloomberg Television’s "InsideTrack," also discusses the box-office sales of "Transformers: Dark of the Moon" and 3-D films. Strauss Zelnick, chief executive officer of Take-Two Interactive Software Inc. and co-founder of ZelnickMedia Corp., also speaks.