Hi Lawrence, first of all I would like to thank you for your great work allowing to start use of OpenMax for MythTV on RPi2 (and for your build script I'm using too for the mythtv build on Windows)! I started to play with your development tree on Raspian Wheezy with Qt4 (Wheezy) and Qt5 (from twolike.be repository) installed (on Rpi2 with mpeg2 and vc-1 license keys installed).