How to enter youtube fitness videos into my exercise log

I do Cassey's videos most days and I enter them as "Calisthenics (pushups, sit-ups), vigorous effort", "Calisthenics, home, light/moderate effort" or Pilates, depending on how hard I'm working. For Call Me Maybe Squats I always use 'vigourous effort', but what makes you bootyful is pretty easy so I'd say "light/moderate effort" or "pilates" but obviously it's subjective. In her blog she says you can work out how many calories each video burns on weighttraining.com or something like that but I couldn't work it. I guess the only way you'd know is with a heart rate monitor.