Mpeg1

MPEG-1 is a standard for lossy compression of video and audio. It is designed to compress VHS-quality raw digital video and CD audio down to 1.5 Mbit/s (26:1 and 6:1 compression ratios respectively)[1] without excessive quality loss, making Video CDs, digital cable/satellite TV and digital audio broadcasting (DAB) possible.Today, MPEG-1 has become the most widely compatible lossy audio/video format in the world, and is used in a large number of products and technologies. Perhaps the best-known part of the MPEG-1 standard is the MP3 audio format it introduced.The MPEG-1 standard is published as ISO/IEC-11172. The standard consists of the following five Parts:Systems (storage and synchronization of video, audio, and other data together)Video (compressed video content)Audio (compressed audio content)Conformance testing (testing the correctness of implementations of the standard)Reference software (example software showing how to encode and decode according to the standard)