aviinfo

Information about Audio/Video Interleaved (AVI) file

Syntax

fileinfo = aviinfo(filename)

Description

fileinfo = aviinfo(filename) returns a structure whose fields contain information about the AVI file specified in the string filename. If filename does not include an extension, then .avi is used. The file must be in the current working directory or in a directory on the MATLAB path.

The set of fields in the fileinfo structure is shown below.

Field Name	Description
AudioFormat	String containing the name of the format used to store the audio data, if audio data is present
AudioRate	Integer indicating the sample rate in Hertz of the audio stream, if audio data is present
Filename	String specifying the name of the file
FileModDate	String containing the modification date of the file
FileSize	Integer indicating the size of the file in bytes
FramesPerSecond	Integer indicating the desired frames per second
Height	Integer indicating the height of the AVI movie in pixels
ImageType	String indicating the type of image. Either 'truecolor' for a truecolor (RGB) image, or 'indexed' for an indexed image.
NumAudioChannels	Integer indicating the number of channels in the audio stream, if audio data is present
NumFrames	Integer indicating the total number of frames in the movie
NumColormapEntries	Integer specifying the number of colormap entries. For a truecolor image, this value is 0 (zero).
Quality	Number between 0 and 100 indicating the video quality in the AVI file. Higher quality numbers indicate higher video quality; lower quality numbers indicate lower video quality. This value is not always set in AVI files and therefore can be inaccurate.
VideoCompression	String containing the compressor used to compress the AVI file. If the compressor is not Microsoft Video 1, Run Length Encoding (RLE), Cinepak, or Intel® Indeo, aviinfo returns the four-character code that identifies the compressor.
Width	Integer indicating the width of the AVI movie in pixels