User:Rcooley~enwiki/MPEG1
From Wikipedia, the free encyclopedia
MPEG-1 was an early standard for lossy compression of video and audio. It was 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 obvious quality loss, making Video CDs, digital cable/satellite TV and digital audio broadcasting (DAB) possible.[2] [3]
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.
Despite its age, MPEG-1 is not necessarily obsolete or substantially inferior to newer technologies. According to Leonardo Chiariglione (co-founder of MPEG): "the idea that compression technology keeps on improving is a myth."[4]
The MPEG-1 standard is published as ISO/IEC-11172.
Filename extension |
.mpg, .mpeg, .mpe, .mp1, .mp2, .mp3, .m1v, .m1a, .m2a, .m3a, .mpa, .mpv |
---|---|
Internet media type |
audio/mpeg, video/mpeg |
Developed by | ISO, IEC |
Type of format | audio, video, container |
Extended from | JPEG, H.261 |
Extended to | MPEG-2 |
Standard | ISO/IEC-11172 |