video compression

Video compression is a technology that reduces the amount of data needed to store or transmit video information. This is achieved through encoding techniques that eliminate redundant data. For instance, video compression standards like MPEG-2, used in digital television and DVDs, work by only transmitting the changes between successive video frames, rather than re-encoding each frame entirely. This process, known as inter-picture compression, significantly reduces the data rate. While compression can be lossless (perfectly reconstructing the original data) or lossy (discarding some detail), video compression typically employs lossy techniques to achieve high compression ratios, allowing for efficient broadcasting and storage of video content.123