Introduction to MPEG

MPEG Preditive-Frame - P-Frames

Predicted frames (P-Frames) are images (pictures) within a sequence of images (such as in a video sequence) that are created using information from other images such as from Intra Frames (I-Frames).

Because image components are often repeated within a sequence of images (temporal redundancy), the use of P-Frames provides substantial reduction in the number of bits that are used to represent a digital video sequence (temporal data compression).

This figure shows how Predictive Frames (P-Frames) are used in a group of pictures (GOP). This example shows that each P-frame contains is created using relative information from I-frames. Because the relative information can be removed, this reduces the number of bytes to represent the image (from 300 kB to approximately 100 kB in this example).

Predictive-Frame P-Frame Diagram

MPEG P-Frame Diagram

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MPEG Books

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Introduction to MPEG

This book explains the basics of audio and video digitization and compression and the standard formats that are used be MPEG. You will learn about the different MPEG audio coders and video coder options.

$19.99 Printed, $16.99 eBook

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