About AVIFile Functions and Macros - Win32 Multimedia Programmer's Reference

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About AVIFile Functions and Macros

The AVIFile functions and macros handle the information in time-based files as one or more data streams instead of tagged blocks of data called chunks. Data streams refer to the components of a time-based file. An AVI file can contain several different types of data, such as a video sequence, an English soundtrack, and a French soundtrack. Using AVIFile, an application can access each of these components separately.

Note Although the AVIFile functions and macros work with any RIFF file, this overview demonstrates their use with AVI files only. AVI files are typically the time-based files used with the AVIFile macros and functions.

AVIFile functions and macros are contained in a dynamic-link library. To initialize the library, use the AVIFileInit function. After you initialize the library, you can use any of the AVIFile functions or macros. To release the library, use the AVIFileExit function. AVIFile maintains a reference count of the applications that are using the library, but not those that have released it. Your applications should balance each use of AVIFileInit with a call to AVIFileExit to completely release the library after each application finishes using it.

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