MP3 is a frequency-domain audio transform encoder. Even though it utilizes some of the lower layer functions, MP3 is quite different from MP2. Chiariglione, Leonardo (March 2001), Open source in MPEG, Linux Journal, archived from the original on 2011-07-25 , retrieved 2008-04-09 International Organization for Standardization (2003). "MPEG-4 Part 14: MP4 file format; ISO/IEC 14496-14:2003" . Retrieved 2009-06-11.

The DVD-Video format uses MPEG-2 video primarily, but MPEG-1 support is explicitly defined in the standard. The Apple iPhone uses MPEG-4 audio for its ringtones but uses the .m4r extension rather than the .m4a extension.The MPEG standards consist of different Parts. Each Part covers a certain aspect of the whole specification. [20] The standards also specify profiles and levels. Profiles are intended to define a set of tools that are available, and Levels define the range of appropriate values for the properties associated with them. [21] Some of the approved MPEG standards were revised by later amendments and/or new editions. The following corporations filed declarations with ISO saying they held patents for the MPEG-1 Video (ISO/IEC-11172-2) format, although all such patents have since expired. [46] Joint Collaborative Team on Video Coding (JCT-VC) was a group of video coding experts from ITU-T Study Group 16 (VCEG) and ISO/IEC JTC 1/SC 29/WG 11 (MPEG). It was created in 2010 to develop High Efficiency Video Coding (HEVC, MPEG-H Part 2, ITU-T H.265), a video coding standard that further reduces by about 50% the data rate required for video coding, as compared to the then-current ITU-T H.264 / ISO/IEC 14496-10 standard. [17] [18] JCT-VC was co-chaired by Prof. Jens-Rainer Ohm and Gary Sullivan. Painter, Ted; Spanias, Andreas (April 2000), Perceptual Coding of Digital Audio (Proceedings of the IEEE, VOL. 88, NO. 4) (PDF), Proceedings of the IEEE, archived from the original (PDF) on September 16, 2006 , retrieved 2016-11-11

WG11 (MPEG) (March 2002). "Overview of the MPEG-4 Standard" . Retrieved 2010-04-11. {{ cite web}}: CS1 maint: numeric names: authors list ( link)ISO/IEC 14496-22 Information technology— Coding of audio-visual objects— Part 22: Open Font Format" (Zip) (firsted.). 2007-03-15 . Retrieved 2010-01-28. The Digital Compact Cassette uses PASC (Precision Adaptive Sub-band Coding) to encode its audio. PASC is an early version of MPEG-1 Audio Layer I with a fixed bit rate of 384kilobits per second.