Usage: ./acr_extr [options] [-i infile]
# ./acr_extr -i inputfile
# ./acr_extr -i inputfile -o outputfile
-h -- print basic options
-o Output file. If do not have this option, dir of output file is the same with input file.
-au If you add this option, it will save the audio data as decoded from input file(formatter: RIFF (little-endian) data, WAVE audio, Microsoft PCM, 16 bit, mono 8000 Hz).
example: ./acrcloud_extr -au -i inputfile
--debug If you add this option, it will print all infomation.