Three types of pictures (or frames) are used in video compression: I, P, and B frames.
An I‑frame (Intra-coded picture) is a complete image, like a JPG or BMP image file. See more

In the H.264/MPEG-4 AVC standard, the granularity of prediction types is brought down to the "slice level." A slice is a spatially distinct region of a frame that is encoded separately from any other region in the same frame. I-slices, P-slices, and B-slices take the … See more

• Require the prior decoding of some other picture(s) in order to be decoded.
• May contain both image data and motion vector displacements and combinations of the two. See more

While the terms "frame" and "picture" are often used interchangeably, the term picture is a more general notion, as a picture can be either a frame or a field. A frame is a complete image, and a field is the set of odd-numbered or even-numbered See more

Typically, pictures (frames) are segmented into macroblocks, and individual prediction types can be selected on a macroblock basis rather than … See more

• I-frames contain an entire image. They are coded without reference to any other frame except (parts of) themselves.
• May be generated by an … See more

• Require the prior decoding of subsequent frame(s) to be displayed.
• May contain image data and/or motion vector displacements. Older standards allow only a single See more