MPEG-1
Sign in to saveMPEG-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 about 1.5 Mbit/s (26:1 and 6:1 compression ratios respectively) without excessive quality loss, making video CDs, digital cable/satellite TV and digital audio broadcasting (DAB) practical.
Key facts
- File format.name
- Moving Picture Experts Group Phase 1 (MPEG-1)
- File format.extension
- .mpeg, .mpg, .mpe, .mp1, .mp2, .mp3, .m1v, .m1a, .m2a, .m2v, .mpa, .mpv
- File format.mime
- audio/mpeg, video/mpeg
- File format.owner
- MPEG (part of ISO/IEC JTC 1)
- File format.genre
- audio, video, container
- File format.latest_release_version
- ISO/IEC TR 11172-5:1998
- File format.extended from
- JPEG, H.261
- File format.extended to
- MPEG-2
- File format.standard
- ISO/IEC 11172
- File format.open
- Yes
- File format.free
- Yes
via Wikipedia infobox
Article
39 sectionsContents
- History
- Patents
- Former patent holders
- Applications
- Part 1: Systems
- Elementary streams, packets, and clock references
- Program streams
- Multiplexing
- Part 2: Video
- Color space
- Resolution/bitrate
- Frame/picture/block types
- I-frames
- P-frames
- B-frames
- D-frames
- Macroblocks
- Motion vectors
- DCT
- Quantization
- Entropy coding
- GOP configurations for specific applications
- Part 3: Audio
- Layer I
- Layer II
- History/MUSICAM
- Technical details
- Quality
- Layer III
- History/ASPEC
- Technical details
- Quality
- MPEG-2 audio extensions
- Part 4: Conformance testing
- Part 5: Reference software
- File extension
- See also
- References
- External links
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 about 1.5 Mbit/s (26:1 and 6:1 compression ratios respectively) without excessive quality loss, making video CDs, digital cable/satellite TV and digital audio broadcasting (DAB) practical.
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 first version of the MP3 audio format it introduced.