Fitbit users

Which option do you use when tracking a fb video? I'm trying the "workout" so far, I think it underestimates but just a bit so I'm fine with that.

Are you tracking walks? Today I tracked 30 minutes walk and it gave me 150 calories vs fb 30 minute workout that gave me 180- feels the walking is too much ...

I will do the same distance on my way back but I will not track it and see how much calories it gives ; if it is different.