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B-frame
Last modified: Friday, June 18, 2004 

Short for bi-directional frame, or bi-directional predictive frame, a video compression method used by the MPEG standard. In a motion sequence, individual frames of pictures are grouped together (called a group of pictures, or GOP) and played back so that the viewer registers the video’s spatial motion. As the name suggests, B-frames rely on the frames preceding and following them. B-frames contain only the data that have changed from the preceding frame or are different from the data in the very next frame.

P-frames and B-frames are also referred to as delta frames.

Also see P-frame and I-frame.

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Data Compression

DVD

Multimedia

Video

related terms

data compression

DVD

I-frame

MPEG

P-frame


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