I also had this question and settled for a work around. I just full screen the browser on the RaspPi, then VNC to it, so I see a full screen vid when I log in, that has password protection and 128 bit encryption.
I also am using a program called scrot for screen shots that are emailed to me using cron, but had to add DISPLAY=:0 before the scrot command to get it to work, and sendEmail seems to work the best, but to get apt-get to install sendEmail had to do, apt-get install sendemail, instead of apt-get install sendEmail, so for that I do crontab -e, then add:
30 5 * * * DISPLAY=:0 scrot /home/pi/camera/picture.png
31 5 * * * sendEmail -f firstname.lastname@example.org
-u subject -m "message txt of email" -s smtp.googlemail.com:587 -xu username -xp password -o tls=yes -a /home/pi/camera/picture.png
that dose a screen shot at 5:30am of the full screen video then emails it to me using gmail, adding your own email addresses, username, password, and directory where your having scrot send the .png file of course,
going a bit off topic there sorry, but hope it helps others save some time.