Shouldn't use gst-launch

[sdroege]

Currently gst-launch is used here, however gst-launch is just a debugging/testing tool and should not be used in production. You probably want to use the GStreamer API directly here, e.g. via https://github.com/creationix/node-gir

[ced-dev]

Thank you very much sir, you've put something interesting on the table here, i'll definitively study it this incoming week