TESTFILES="no-interlaced-field.mkv interlaced-0.mkv interlaced-1.mkv interlaced-2.mkv"

for file in $TESTFILES; do
  echo $file
  GST_DEBUG=matroskademux:4 gst-launch-1.0 -q filesrc location=$file ! matroskademux ! video/x-raw ! fakesink 2>&1 | grep interlace-mode
  echo ""
done