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(compression, standard, algorithm, file format)
The first MPEG format for compressed video, optimised for CD-ROM. MPEG-1 was designed for the transmission rates of about 1.5 Mbps achievable with Video-CD and CD-i.

It uses discrete cosine transform (DCT) and Huffman coding to remove spatially redundant data within a frame and block-based motion compensated prediction (MCP) to remove data which is temporally redundant between frames. Audio is compressed using subband encoding. These algorithms allow better than VHS quality video and almost CD quality audio to be compressed onto and streamed off a single speed (1x) CD-ROM drive.

MPEG encoding can introduce blockiness, colour bleed and shimmering effects on video and lack of detail and quantisation effects on audio.

The official name of MPEG-1 is International Standard IS-11172.
This article is provided by FOLDOC - Free Online Dictionary of Computing (
References in periodicals archive ?
My first product was a CD-ROM that benchmarked the CD-ROM video compression products, which included Cinepak, Indeo, and a funky, poorly performing codec called MPEG-1. On the horribly underpowered computers of the day, Indeo and Cinepak offered 30 fps 320x240 playback, where MPEG-1 was around 8-10 fps.
The software is the successor to the popular TMPGEnc MPEG Editor 3, built from the ground up and touts the ability to smart render (lossless edit) practically any MPEG-1, MPEG-2 or H.264/MPEG-4 AVC file and edit at the frame level.
The Omnia.9 delivers a range of services on a new platform including separate processing for FM and HD-1, (optional) HD-2 and HD-3 and built-in, fully independent encoding and processing for internet streams of FM analogue, Primary Digital (HD-1) and (optional) Secondary (HD-2) and Tertiary (HD-3) and supported encoding to MP3 (Mpeg-1 Layer 3), MP2 (Mpeg-1 Layer 2), C, HE-C (including RTSP/3G for streaming to mobile phones), Ogg Vorbis, WMA and WMA Pro.
Both players support today's most popular media formats, including MPEG-1, MPEG-2, MPEG L2, MP3, H.264/MPEG-4 and VC-1 codec formats.
The coding of digital video signals using the MPEG-2 standard to produce a compressed digital video bit stream is described first, followed by the coding and compression of digital audio, including methods used by MPEG-1 and MPEG-2 standards and the Dolby AC-3 system.
This frame can be used as an MP3 player and for viewing photos and video files in MPEG-1, MPEG-2 or MPEG-4 format.
MPEG has produced MPEG-1, MPEG-2 and MPEG-4 (MPEG-3 was absorbed into the MPEG-2 standard).
The MPEG104 board from Parvus[R] is a PC/104-Plus form factor MPEG-1 encoder capable of capturing high-quality analog video and audio streams, encoding them in compressed MPEG-1, M-JPEG, or JPEG formats, and sending them to a host computer over a 32-bit PCI bus.
The new release is a hardware-based real-time MPEG-4 video encoder that supports MPEG-1 and MPEG-2 formats.
This includes important standards such as MPEG-1 or -2 audio, MP3, WMA, Dolby AC3, DVD-audio and others.
The machine handles both MPEG-1 and MPEG-2 formats in addition to Sony's proprietary "Giga Pocket" files, and will also cope with AVI and WMA stuff.