If it helps, this is what the coding looks like, with the square brackets replaced with curly brackets.

{video:youtube}http://www.youtube.com/watch?v=7HFLjIHNzFg[{video}

Uses the 'insert video' function on TM, and making sure you copy the URL of the video (not any of the Youtube share options), and remove the 's' from 'https'

1972 4/4 4 seater, 1981 MGB GT
1984 Harley Davidson Electra Glide, 1990 Kawasaki ZX10