Privacy is just one argument against installing video cameras.
. . . With 229 deader than dead bodies on the bottom of the Atlantic, your "privacy" rights in the cockpit are severely challenged.
Video recording cams focused on the instrument panels of AF447 would have shown what was displayed on the F/Os screen, data that was NOT recorded by the FDR.
What did the F/O at the controls SEE on his display that would give investigators a clue as to why he may have pulled on his stick and climbed into a stall?