M

M-ACPA -

M-Audio Capture and Playback Adapter.
M-Audio Capture and Playback Adapter (M-ACPA) -
An adapter card (for use with the IBM PS/2 product line) that provides the ability to record and play back high quality sound. The adapter converts the audio input (analog) signals to a digital format that is compressed and stored for later use.
master stream handler -
Controls the behavior of one or more subordinate objects (the slave streams).
matte -
In film, an opaque piece of art or a model that leaves a selected area unexposed to be filled on a subsequent pass or in composite.
MCD -
Media control driver.
MCI -
Media Control Interface.
M-Control Program/2 -
The software interface required for the M-Motion Video Adapter/A. It consists of APIs or toolkits for DOS, Windows, Windows MCI, OS/2, and OS/2 MMPM/2. It also includes Pioneer and Sony videodisc player drivers for these environments. See also M-Motion Video Adapter/A.
MDM -
Media device manager.
media -
More than one hardware medium.
media component -
A processor of audiovisual information or media. Media components can be either internal or external physical devices or defined mechanisms for effecting higher-level function from internal hardware and software subsystems. (An example is a waveform player component that utilizes the DSP subsystem and data streaming services to effect audio playback functions.)
media component capabilities -
The functionality of a media component, including component functions that are supported.
media component type -
A class of media components that exhibit similar behavior and capabilities. Examples of media component types are analog video display hardware and MIDI synthesizers.
media control driver (MCD) -
A software implementation or method that effects the function of a media component. For OS/2, a media control driver or media driver is a dynamic-link library (or set of libraries) that utilizes physical device drivers, Media Device Manager services, and OS/2 to implement the function of the media component.
Media Control Interface (MCI) -
A generalized interface to control multimedia devices. Each device has its own MCI driver that implements a standard set of MCI functions. In addition, each media driver can implement functions that are specific to the particular device.
media device -
A processor of audiovisual information or media. Media components can be either internal or external physical devices or defined mechanisms for effecting higher-level function from internal hardware and software subsystems. (An example is a waveform player component that utilizes the DSP (Digital Signal Processor) subsystem and data-streaming services to effect audio-playback functions.)
media device capabilities -
The functionality of a media component, including supported component functions.
media device connection -
A physical or logical link between media component connectors for a particular set of media component instances.
media device connector -
A physical or logical input or output on a media component.
media device connector index -
An identifier for a media component connector.
media device ID -
Media component identification. A unique identifier for a component.
media device instance -
A case of an application's use of a media component.
media device manager (MDM) -
A system service that, when two or more applications attempt to control a media device, determines which process gains access.
media driver -
A device driver for a multimedia device. See also device driver.
media driver -
A software implementation or method that effects the function of a media device.
media element manager (MEM) -
A system service that manipulates multimedia data.
media programming interface (MPI) -
A subsystem that provides a comprehensive system programming API layer for multimedia applications.
media segment -
An audiovisual object of some type, such as a waveform, song, video clip, and so on.
media unit -
A medium on which files are stored; for example, a diskette.
media volume -
A (possibly heterogeneous) physical or logical collection of media segments. (Examples are a videodisc, video tape, compact audio disc, OFF file, and RIFF file.)
media volume file -
A media volume that is embodied as a conventional binary computer file within a computer file system on storage devices such as disks, diskettes, or CD-ROMs. Such storage devices can be either local or remote. Media volume files can be of various formats, such as OFF or RIFF, and contain segments of various types.
medium shot -
A camera angle that reveals more of the subject than a close-up but less than a wide shot, usually from face to waistline; sometimes called a mid-shot.
MEM -
Media element manager.
MEM IOProc -
An internal I/O procedure provided by the MMPM/2 system that supports memory files.
memory file -
A block of memory that is perceived as a file by an application.
memory playlist -
A data structure in the application used to specify the memory addresses to play from or record to. The application can modify the playlist to achieve various effects in controlling the memory stream.
message interface -
See command message interface.
MIDI Mapper -
Provides the ability to translate and redirect MIDI messages to achieve device-independent playback of MIDI sequences.
MIDI message -
A sequence of bytes that conform to the MIDI standard. There are two categories: System Exclusive (SysEx) and non-SysEx messages. SysEx messages can be of any length, whereas non-SysEx messages are between one and three bytes.
mid-shot -
See medium shot.
millisecond -
One thousandth of a second.
minutes-seconds-frames (MSF) -
A time format based on the 75-frames-per-second CD digital audio standard.
MIPS -
Millions of instructions per second. A unit of measure of processing performance equal to one million instructions per second.
mix -
The combination of audio or video sources during postproduction.
mixed-media system -
Synonym for multimedia system.
Mixed Object : Document Content Architecture (MO:DCA) -
A data format for multimedia products.
mixer -
A device used to simultaneously combine and blend several inputs into one or two outputs.
mixing -
(1) In computer graphics, the result of the intersection of two or more colors. (2) In filming, the combining of audio and video sources that is accomplished during postproduction at the mix. (3) In recording, the combining of audio sources.
MMIO -
Multimedia input/output.
MMIO file services -
System services that enable an application to access and manipulate multimedia data files.
MMIO manager -
Multimedia input/output manager. The MMIO manager provides services to find, query, and access multimedia data objects. It also supports the functions of memory allocation and file compaction. The MMIO manager uses IOProcs to direct the input and output associated with reading from and writing to different types of storage systems or file formats.
M-Motion -
A multimedia platform that offers analog video in addition to quality sound and images. The M-Motion environment consists of the M-Motion Video Adapter/A and the M-Control Program/2 master stream handler.
M-Motion Video Adapter/A -
(1) A Micro Channel adapter that receives and processes signals from multiple video and audio sources, and then sends these signals to a monitor and speakers. (2) Dual plane video hardware that offers analog video in addition to quality sound and images. (3) The M-Motion Video Adapter/A requires the M-Control Program/2.
MMPM/2 -
Multimedia Presentation Manager/2. See OS/2 multimedia.
MMTIME -
Standard time and media position format supported by the media control interface. This time unit is 1/3000 second, or 333 microseconds.
MO:DCA -
Mixed Object : Document Content Architecture.
mode -
A method of operation in which the actions that are available to a user are determined by the state of the system.
model -
The conceptual and operational understanding that a person has about something.
module -
A language construct that consists of procedures or data declarations and that can interact with other constructs.
moire -
An independent, usually shimmering pattern seen when two geometrically regular patterns (as a sampling frequency and a correct frequency) are superimposed. The moire pattern is an alias frequency. See also aliasing.
monitor -
See video monitor.
monitor window -
A graphical window, available from a digital video device, which displays the source rectangle, and any subset of this video capture region. See destination rectangle for related information.
motion-control photography -
A system for using computers to precisely control camera movements so that the different elements of a shot-models and backgrounds, for example-can later be composited with a natural and believable unity.
motion video capture adapter -
An adapter that, when attached to a computer, allows an ordinary television picture to be displayed on all or part of the screen, mixing high-resolution computer graphics with video; also enables a video camera to become an input device.
Motion Video Object Content Architecture (MVOCA) -
A data format for multimedia products.
Moving Pictures Experts Group (MPEG) -
A group that is working to establish a standard for compressing and storing motion video and animation in digital form.
MPEG -
Moving Pictures Experts Group.
MPI -
Media Programming Interface.
MPI application services -
Media Programming Interface application services. Functional services provided by MPI to application programs and higher-level programming constructs, such as multimedia controls.
MS -
Script abbreviation for medium shot.
MSF -
Minutes-seconds-frames.
multimedia -
Material presented in a combination of text, graphics, video, image, animation, and sound.
multimedia data object -
In an application, an element of a data structure (such as a file, an array, or an operand) that is needed for program execution and that is named or otherwise specified by the allowable character set of the language in which the program is coded.
Multimedia File I/O Services -
System services that provide a generalized interface to manipulate multimedia data. The services support buffered and unbuffered file I/O, standard RIFF files, and installable I/O procedures.
multimedia input/output (MMIO) -
(1) System services that provide a variety of functions for media file access and manipulation. (2) A consistent programming interface where an application, media driver, or stream handler can refer to multimedia files, read and write data to the files, and query the contents of the files, while remaining independent of the underlying file formats or the storage systems that contain the files.
multimedia navigation system -
A tool that gives the information product designer the freedom to link various kinds and pieces of data in a variety of ways so that users can move through it nonsequentially.
multimedia system -
(1) A system capable of presenting multimedia material in its entirety. (2) Synonym for mixed-media system.
multiple selection -
A selection technique in which a user can select any number of objects, or not select any.
Musical Instrument Digital Interface (MIDI) -
A protocol that allows a synthesizer to send signals to another synthesizer or to a computer, or a computer to a musical instrument, or a computer to another computer.
mute -
To temporarily turn off the audio for the associated medium.
mux -
An abbreviation for multiplexer. See also mixer.
MVOCA -
Motion Video Object Content Architecture.

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