gst-launch-1.0 videotestsrc \
! video/x-raw,width=1280,height=960 \
! gpxoverlay \
script-location=../src/gpxoverlay/assets/elevation.js \
gpx-location=../src/gpxoverlay/assets/route.gpx \
! videoconvert \
! autovideosink
gst-launch-1.0 videotestsrc \
! video/x-raw,width=640,height=480,framerate=1/1 \
! gpxparser \
location=../src/gpxoverlay/assets/route.gpx \
! fakesink