pacflyer:
Sometime ago, Canada introduced "controlled rest on the flight deck" legislation, making legal what crews have been doing since long-haul commercial flying began. The procedures involved a third person on the flight deck, usually an F/A because one crew member (out of 3) is usually back for the break; It works well and lasts about 20 minutes which is all most need to refresh - through the extensive research one thing isn't recommended and that's anything longer than about an hour as REM sleep begins for some by then and deep-sleep is more difficult to recover from than a nap.
So far as cockpit video recording goes, I can't see it being introduced anytime soon. As mentioned, the quality is terrible especially at night, the screens cannot be read of course but the worst and most concerning aspect of such recordings is, the likes of CNN, Fox News or Sky will do their best to get hold of the recordings for their evening news titillation and entertainment - To be blunt, reality TV has already become prime-time viewing and broadcasting an accident from the cockpit would simply make producers and advertisers drool in anticipation of the audience numbers.
We in Canada have long made it illegal to access the CVR information by other than trained investigors of the TSB; even that has been breached by the courts in a recent case. We have attempted to make access to the DFDR and FOQA QARs also illegal but so far have been unsuccessful. Pilots have every right to such privacy with the obvious exception of investigations of incidents and accidents but that's it. There isn't any way, ever, that flight crews trust or ever would trust the media, the lawyers and the politicians with such information. Although the utility of such recordings is obvious in terms of accident investigaton, (and like some here, I have had my sim sessions recorded for immediate review afterwords, and frankly the tool is an excellent learning one), neither the number of suspected cases nor the high risk of inappropriate use can justify the installation.