NationMaster - Encyclopedia: FOURCC

A FOURCC (literally, four character code) is a sequence of four bytes used to uniquely identify data formats. Originally used in the Amiga IFF file format, the idea was reused to identify data types in Apple's AIFF format and Microsoft's RIFF format. FOURCC codes were also adopted by Microsoft to identify data formats used in DirectX, specifically within DirectShow and DirectX Graphics.

Categories: Computer stubs

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FOURCC.org - Video Codecs (4169 words)
	These are the FOURCCs I know about that refer to compressed formats (the ones that you see displayed when you don't have the right codec installed to play a given AVI file).
	This FOURCC code is used for versions 4.0 and later of the DivX codec.
	Another FOURCC for TrueMotion S. This relates to the version of the codec licensed by Horizons Technology and is not compatible with DUCK.

TFourCC in MMF Common (320 words)
	FourCC codes are a representation of the datatypes used to identify codecs.
	FourCC codes are used in codec.rss files as a match string used by ECOM to correctly load the required DLL.
	FourCC codes play a big part in Format plugins, as they are used to instantiate (by way of the datapath) codec operations that transform data from one type to another.

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