I don't see how it can make it worse at all, . . . .
I would have thought that Flamingo's response would have been a good enough illustration.
However, as it clearly hasn't helped you, lets just think this through . . .
- you want to record something at the same time as being an 'interested party' - your 'evidence' is dubious because of your bias.
- you expect both parties to behave as if the camera wan't present - they won't. The 'other person' will play by the rules (and not by their instincts nor disposition) and the passenger will be acting as both 'the actor / MoP' and 'the Producer' of the video.
- the surrounding interest in the proceedings is likely to become a factor, and either party is likely to be indifferent/intimidated/excited/irritated by the recording and to react accordingly - not anything to do with an analysis of the NRCoC.
I speak from a little experience, people who have felt aggrieved by their interactions and who have produced a 'home video' of their side of the events as evidence, have never (in my experience) managed to influence a Court in their favour.
In fact the last time I was asked to produce some self-produced video evidence in Court, I can remember clearly the exchange of glances between me and the Court Usher with my cue to dim the lighting, it was that eyes rolling upwards gesture meaning "here we go, this is just going to waste everyone's time, including you and me, isn't it?" It makes the person who made the video feel important for a few minutes.
It also makes them angry for months afterwards while they're paying the costs of the Court case they lost.
Thanks to technological developments, we can all be video producers.
Thanks to reading and writing, we can all be legal experts.
One doesn't lead to the other and we seem to have a slight imbalance between the two at the moment.