

HELP:
	$ ./ex_liboCams.py -h
	Usage: ex_liboCams.py [options]


	Options:
	  -h, --help            show this help message and exit
	  -a, --alltest         test all resolution in playtime
	  -t PLAYTIME, --time=PLAYTIME
        	                playtime for streaming [sec] intValue, 0 means forever
	  -i INDEX, --index=INDEX
        	                index of resolusion mode


Excution:

	* Test all Formats while 10 seconds
	$ ./ex_liboCams.py -a -t 10 

	* Test 2nd Format while 5 senconds
	$ ./ex_liboCams.py -i 1 -t 5

