Usage:
main <path-to-file> <\"gst\" or \"ges\"> <playback-rate> <start-position-in-seconds>
<path-to-file>
: The file path to the media file to play.<\"gst\" or \"ges\">
: Whether to create just a GStreamer pipeline, or a GStreamer Editing Services pipeline.- ``: The playback rate. 1.0 for playback at normal speed.