New option: "B-frame pyramid" keeps the middle of 2+ consecutive B-frames as a...
New option: "B-frame pyramid" keeps the middle of 2+ consecutive B-frames as a reference, and reorders frame appropriately. git-svn-id: svn://svn.videolan.org/x264/trunk@150 df754926-b1dd-0310-bc7b-ec298dee348c