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Details for: MPEG-1 Elementary Stream

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Summary
Name MPEG-1 Elementary Stream
Version  
Other names  
Identifiers PUID:  fmt/649
Family  
Classification Video
Disclosure  
Description MPEG-1 is a lossy compression standard for video and audio, intended for use in Digital Storage Media (DSM) such as VideoCD and DVD (at the same encoding standard as VCD). It is designed to handle video frame-sizes of 352 x 288px, at a frame-rate of 25 frames per second (PAL) and a data rate of around 1.2Mbits/s; audio: up to 320 kbits/s (MPEG-1 Audio Layer III, *.mp3). MPEG-1 supports random access to stream content on playback. MPEG-1 Video supports only 'progressive' frame video. MPEG-1 compression can be relatively inefficient by modern standards. An MPG-1 ‘Elementary’ stream (ES) file (*.m1v) contains either a single video or audio stream (e.g. *.mp3). ES files are generally intended for video editing or other intermediate use, where separate audio content can be ultimately blended ('interleaved' or ‘muxed’) with a video stream to produce an output file containing both audio and video for synchronised playback.
Orientation  
Byte order  
Related file formats Has lower priority than MPEG-2 Elementary Stream  
Technical Environment  
Released  
Supported until  
Format Risk  
Developed by None.
Supported by None.
Source Digital Preservation Department / The National Archives
Source date 14 Jul 2014
Source description 11/2023 (v.115)- Modified the offset values in the internal signature from null to 0 as part of a project to match PRONOM data with the xsd standard. Internally researched.
Last updated 14 Nov 2023
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