qtmux: Use the new helper functions for mapping the colr atom values to colorimetry
qtmux: Use the new helper functions for mapping the colr atom values to colorimetry

GStreamer/gst-plugins-good,GStreamer/gst-plugins-good,pexip/gst-plugins-good,GStreamer/gst-plugins-good,pexip/gst-plugins-good,GStreamer/gst-plugins-good,pexip/gst-plugins-good,pexip/gst-plugins-good,pexip/gst-plugins-good