- MJPEG 2000 — M-JPEG2000 (MJ2K) is a video adaptation of the JPEG2000 standard. M-JPEG2000 will treat a video stream as a series of still photos, compressing each individually.
- Motion estimation — The process of estimating motion vectors during the encoding process.
- MOV — QuickTime Movie file.
- MP3 — It was standardized by the ISO as MPEG Audio Layer III (ISO/IEC 11172-3 and ISO/IEC 13818-3).
- MP4 — file format that was designed for storing MPEG-4 data in a file.
- MPEG — The Moving Picture Experts Group is a working group of ISO/IEC in charge of the development of international standards for compression, decompression, processing, and coded representation of moving pictures, audio and their combination.
- MPEG LA, LLC — Reseller of technology platform patent licenses, enabling users to acquire worldwide patent rights necessary for a particular technology standard or platform from multiple patent holders in a single transaction as an alternative to negotiating separate licenses. Any use of video or software other that consumer personal use in any manner that complies with the MPEG-2, MPEG-4 or AVC standard is expressly prohibited without a license under applicable patents in the MPEG-2, MPEG-4 or AVC patent portfolio, which license is available from MPEG LA, L.L.C. Additional information may be obtained from MPEG LA, L.L.C. See http://www.mpegla.com.
- MPEG-1 — Audio and video compression format developed by Moving Pictures Expert Group. Official description: Coding of moving pictures and associated audio for digital storage media at up to about 1,5 Mbit/s.
- MPEG-1 System Stream (SS) — multiplexed streams complying with ISO/IEC 11172-1 standard.
- MPEG-2 — Audio and video compression format developed by ISO/IEC/JTC/SC29/WG11 and is known as ISO/IEC 13818. The MPEG-2 video coding standard is primarily aimed at coding of CCIRR-601 or higher resolution video with fairly high quality at challenging bitrates of 4 to 9Mbit/s. It aims at providing CCIR/ITU-R quality for NTSC, PAL, and SECAM, and also at supporting HDTV quality, at data rate above 10Mbps, real-time transmission, and progressive and interlaced scan sources.
- MPEG-4 SP/ASP — (Simple profile/Advanced simple profile) MPEG-4 is a standard for graphics and video compression that is based on MPEG-1 and MPEG-2 and Apple QuickTime technology. Wavelet-based MPEG-4 files are smaller than JPEG or QuickTime files, so they are designed to transmit video and images over a narrower bandwidth and can mix video with text, graphics and 2-D and 3-D animation layers. MPEG-4 was standardized in October 1998 in the ISO/IEC document 14496.
- Multiplexing — Usually video and audio are encoded separately. Then you have to join both of them to make a movie that you can play (you can of course play audio and video separately in two players but to get synch would be rather hard). During multiplexing the audio and video track are combined to one audio/video stream. The audio and video streams will be like woven together and navigational information will be added so that the player can example fast forward/backward and still retain synch audio/video