The mesh is about 3 feet out. B Frames to be of any use require 6 frames at 33ms each, that is 200ms, a quarter of a second, but on play back you need all of t

The mesh is about 3 feet out. B Frames to be of any use require 6 frames at 33ms each, that is 200ms, a quarter of a second, but on play back you need all of the frames in the set from i frame to i frame to get make the reference frames work, this is typically 1-3 seconds. -Brandon Wirtz SMPTE Voting Committee Member for the ratification of H.264 and VC-1 standards.