Inter-frame (compression)

Video compression which involves more than one frame to code and decode. Inter-frame compression compares consecutive frames to remove common elements and arrive at ‘difference’ information to describe the frames between the (integral) I-frames. MPEG-2 and MPEG-4 use two types of inter-frame processed pictures – the ‘P’ (predictive) and ‘B’ (bi-directional) frames. As ‘P’ and ‘B’ frames are not complete in themselves but relate to other adjacent frames, they cannot be edited independently.

See also: Cut edit, I-frame, MPEG-2, MPEG-4