Media Control Interface

The Media Control Interface, MCI in short, is an aging high-level API developed by Microsoft and IBM for controlling multimedia peripherals connected to a Microsoft Windows or OS/2 computer, such as CD-ROM players and audio controllers.

MCI makes it very simple to write a program which can play a wide variety of media files and even to record sound by just passing commands as strings. It uses relations described in Windows registries or in the [MCI] section of the file SYSTEM.INI. One advantage of this API is that MCI commands can be transmitted both from the programming language and from the scripting language (open script, lingo aso). Example of such commands are mciSendCommand or mciSendString.

For a number of years, the MCI interface has been phased out in favor of the DirectX APIs.

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Playing media through the MCI interface

To play a type of media, it needs to be initialized correctly using MCI commands. These commands are subdivided into categories:

• System Commands
• Required Commands
• Basic Commands
• Extended Commands

A full list of MCI commands can be found at Microsoft's MSDN Library.

External links

• Microsoft MCI Reference - MSDN Library