Group Of Pictures (GOP)

Group of Pictures (GOP) is a type of terminology related to MPEG video encoding. Groups of pictures are grouped together in ways that enhance the visual result of a video sequence.

The philosophy is that each coded video stream has groups of GOPs. GOPs include various types such as intra-coded pictures, predictive coded pictures, I-predictive coded pictures and DC direct coded pictures. Encoders use groups of pictures and other tools to render smoothly streaming video. Frame rates and other metrics may also apply.