I am attempting to run the following via a php page: <?php exec("cvlc dvb:// :dvb-adapter=1 :no-video --sout '#standard{access=http,mux=asf,dst=10.10.1.53:8181}' "); ?> This works fine using php on the command line, but not via a browser. The vlc process launches, but it does not actually stream. I'm guessing it is an environment variable or need for a shell. An ideas what I am missing?