One would think that when you download an application that streams video, it would make sense that it would support HDMI. For some strange reason, there are at least two applications that don’t come with that really should. One is HBO GO and the other is Cinemax.
XDA Forum Member HBOTroll1 has modified the HBO GO and Cinemax APKs to allow for HDMI output. HBOTroll1 explains:
So I recently got HBO and was disappointed to see that the HBO GO app didn’t support HDMI out. I thought this strange since I had never seen anything else that didn’t support HDMI out, so you would think HBO would be able to figure it out if everyone else did…So I read a few tutorials and here’s what I came up with… I have a Droid 4, so I know it works on Motorola phones. I think it should work on all other phones too, but I only have the one phone so it hasn’t been tested on any others.
Later on, HBOTroll1 applied the same mod on the Cinemax application. As stated, it’s been tested on the Droid 4, but it should be compatible with other devices as well. If you need some HDMI goodness, check out the original thread. (Clickable links can be found in post 4 from XDA Senior Member rayjr13.)_________