The introduction of a video recorder in addition to the current audio and flights parameters recorders used for crash investigation (CVR and FDR) is suggested by this article (published in the New York Times in 2004) citing officials of the National Transportation Safety Board, and called image recorder in a most wanted list (published in 2012) of the FAA. Those two references shows the introduction of a video recorder is taken seriously. I don't want to debate whether this is usefull neither what should be recorded (wide angle of the whole cockpit, close view of switches and screens, black & white or color, ...).
Given the answers of this questions, the video track record's requirements should be very close to the one of the CVR, thus adding this track to the CVR seems reasonnable.
If we add this video track to all tracks recorded by blackboxes, will this records to an existing blackbox (either the FDR or the CVR) or will we create a dedicated blackbox (resulting in three blackboxes)?