It seems versions 1.2 and 1.3 of Transmageddon introduced various fixes for VAAPI so it looks like I really need to be running 1.3 if I want VAAPI to work.
I installed gstreamer1.0, gstreamer1.0-vaapi plus all the build deps listed in transmageddon INSTALL and README files but I can't get 1.3 to run under 14.04 - 0.25 ran just fine, albeit without VAAPI accel.
I tried installing the package from here:
With no luck and when I build it from source I get this error when I run it:
It seems Transmageddon 1.3 is already in Utopic but I'd rather not upgrade to 14.10 just yet.
Traceback (most recent call last):
File "transmageddon.py", line 141, in do_activate
self.win = TransmageddonUI(self, source=self.source)
File "transmageddon.py", line 320, in __init__
File "transmageddon.py", line 1337, in setup_source
fileopen=theme.load_icon(Gtk.STOCK_OPEN, size, 0)
gi._glib.GError: Icon 'gtk-open' not present in theme