Programming

Getting Information About Audio/Video Files

MATLAB includes several functions that you can use to get information about files that contain audio data, video data, or both. Some work only with specific file formats. One function, the mmfileinfo function, can retrieve information about many file formats.

Format-Specific Functions

MATLAB includes several functions that return information about files that contain audio and video data in specific formats.

• aufinfo -- Returns a text description of the contents of a sound (AU) file
• aviinfo -- Returns a structure containing information about the contents of an Audio/Video Interleaved (AVI) file
• wavfinfo -- Returns a text description of the contents of a sound (WAV) file

Using the General Multimedia Information Function

MATLAB also includes a general-purpose, audio/video file information function named mmfileinfo. The mmfileinfo function returns information about both the audio data in a file as well as the video data in the file, if present.

Note    mmfileinfo can be used only on Windows systems.

Working with Audio and Video Data

Importing Audio/Video Data

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