Quote: 'I do believe it is wrong to upload videos and put them on public display. I do think it would be OK to upload them and mark them as withheld so the subjects can have a look and decide whether they think they are OK to be made public.'

That seems sensible and fair :)

   Someone who just wanted to video a session for their own use, so that they could sit down later and learn the tunes at their own pace, would probably be happy with a few mistakes in the recording which the subjects wouldn't want broadcast to the world :D