rtpfeed -V (return code: 255)
*** rtpfeed 0.1 ***
rtpfeed: unrecognized option '--version'
DVR DEVICE: : No such file or directory
rtpfeed --help (return code: 1)
*** rtpfeed 0.1 ***
Usage: rtpfeed [-g group] [-p port] [-v video PID] [-a audio PID]