Indicate number of frames available in memory buffer
The FramesAvailable property indicates the total number of frames that are available in the memory buffer. When you extract data, the object reduces the value of the FramesAvailable property by the appropriate number of frames. You use the getdata function to extract data and move it into the MATLAB® workspace.
Note When you issue a start command, the video input object resets the value of the FramesAvailable property to 0 (zero) and flushes the buffer.
To view the total number of frames that have been acquired since the last start command, use the FramesAcquired property.
Any nonnegative integer. The default value is 0 (zero).