as things are presently proposed, a & c, neither of your conditions will be met. The instruments are already covered by the FDR. As for copyright, flight crew have no say in what CVR tapes are used for. What makes you think video will be different?
This raises many problems. cockpit Video tapes are likely to be used for all sorts of things which are to our disadvantage -sensational TV, law suits etc, with flight safety not getting much of a look-in.