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在matlab中输入help mmreader来查阅一下该函数,有如下信息:
MMREADER Create a multimedia reader object.
OBJ = MMREADER(FILENAME) constructs a multimedia reader object, OBJ, that
can read in video data from a multimedia file. FILENAME is a string
specifying the name of a multimedia file. There are no restrictions
on file extensions. By default, MATLAB looks for the file FILENAME on
the MATLAB path.
If the object cannot be constructed for any reason (for example, if the
file cannot be opened or does not exist, or if the file format is not
recognized or supported), then MATLAB throws an error.
OBJ &