The camera man or the woman
Oh lord have mercy on this world

https://www.youtube.com/watch?v=L1B0qBdJR2o

Is dancing or filming a sin?

.

Both of them, here is my reason.
The camera man finished commiting his own personal sin by staring lustfully at the lady, he decided to amplify it by filming it to watch later, show his friends and uploading it online. Thus leading the above people mentioned to sin as they watch the clip.
The lady is the root of it all... she is the vessel that propagated and lured men to sin by putting on that kind of dress knowing fully well the type of shape she got...there was a motive behind the dance because she should have chosen a different kind of dance apart from twerking inside the church or perhaps a building because God can't be in such a place that condoles such.