DO NOT TRANSLATE THIS NIB FILE, NSIsNotNil NSNegateBoolean NSIsNil NSIsNil NSIsNotNil HBContainerTransformer NSIsNotNil NSIsNotNil HBURLTransformer Optimize the layout of the MP4 file for progressive download. This allows a player to initiate playback before downloading the entire file. NSNegateBoolean NSNegateBoolean NSIsNil NSNegateBoolean NSNegateBoolean NSIsNotNil IA NSNegateBoolean NSIsNotNil