Hi,
According to the Video Menu this is the state of play.
The Video menu only applies to the Buddy Lists such as Bonjour.
The Screen Sharing item is no longer there to Enable.
With both Jabber and AIM connections I am having issues connecting to anyone outside of my LAN for Video and Audio Chats.
Bonjour and AIM to AIM on the same LAN works for me but not outside of this.
As far as I can make out this is to do with the SNATMAP server.
As you connect to it making the outward call the connection to the server is made, so any return path works.
7:55 pm Friday; February 19, 2016
iMac 2.5Ghz i5 2011 (Mavericks 10.9)
G4/1GhzDual MDD (Leopard 10.5.8)
MacBookPro 2Gb (Snow Leopard 10.6.8)
Mac OS X (10.6.8),
Couple of iPhones and an iPad