the given OSD channel. Position types are: "center", "left", "right", "top",
"bottom", "top-left", "top-right", "bottom-left" or "bottom-right". The
duration is set in microseconds.
the given OSD channel. Position types are: "center", "left", "right", "top",
"bottom", "top-left", "top-right", "bottom-left" or "bottom-right". The
duration is set in microseconds.