Craig Legary thanks for the kind words for our client. We try to give the happy stuff as well to the team working on it. :-)
Just tried this with the 16.2 client (December) and I am able to show my video so not sure what he is running into. If he literally cannot show his video and you have eliminated a HW issue, this is definitely a bug that should be reported via support.
Recommend you start a thread about the iOS video issues you are seeing here if you want to discuss. If you are sure its a bug, definitely open this as well. Feel free @mention me if you decide to start a thread here. Be sure to let us know the versions and backend topolgy you have (Office 365 / SFB Server 2015 / Lync 2013 Server). Check your patch levels for the on-premises servers as well.