motion vector Last modified: Monday, March 12, 2007
In video editing motion vectors are used to compress video by storing the changes to an image from one frame to the next. The process is a bi-dimensional pointer that communicates to the decoder how much left or right and up or down, the prediction macroblock is located from the position of the macroblock in the reference frame or field.
•E-mail this definition to a colleague• Sponsored listings Electrical Components and Parts - Browse Digi-Key’s online catalog, featuring over 750,000 electronic components and accessories from more than 330 of the world’s top manufacturers. For internet.com pages about motion vector . Also check out the following links! WebVideoUniverse  WebVideoUniverse takes you through the process of creating video for the Web, from shooting, to editing and encoding, to distributing and finally, to promoting your work. With tutorials, news and discussion, WebVideoUniverse helps you create professional videos for your Web site. Motion Estimation Tutorial This page is intended to give the reader a basic understanding of what motion estimation is and how it fits into video compression as a whole. Motion Vector Applications We use these vectors creatively to detect and track motion and to find an alternative to traditional video decoding using phase shifting. motion-compensated coding (PDF) Prediction formulas and examples. Perceptual Coding: How Mp3 Compression Works The requirement that encoded video and audio must be retrievable from a medium delivering only 1.5 million bits per second dictated that one of the principal concerns of this document was data compression, since the transmission of uncompressed audio and video streams would require many more bits per second.	Graphics Graphics Software Multimedia Video digital video I-frame Macroblock Macrovision motion compensation and prediction motion estimation perceptual coding P-frame video conversion video editing video encoding Give Us Your Feedback Shopping motion vector Products Compare Products,Prices and Stores Shop by Category: Web Cameras 1 Model Matches Security Systems and Surveillance 0 Store Offers Clothing 74 Store Offers Tools and Accessories 0 Store Offers Digital Camera Accessories 2 Model Matches