MacSailing.net

Erica Sadun over at Ars found a little tidbit of programming joy in the form of an undocumented way to push iPhone video to an external TV display.

I think iNavX with video output would be great to have the navigation maps on an external 10" monitor.

The AV cable on gets at the Apple store is great but only allows for showing video and pictures on an external display. I've bought this cable but was disappointed not to be able to show applications (like Distant Suns, ChemTouch, Grafunc etc) .

Now these hidden functions seems to allow just that.

Here are more infos (check the video)

http://www.9to5mac.com/hidden-libraries

So what do you think of iNavX with Video Output?

Quote:The MPTVOutWindow class, while belong to a public framework, is an unpublished class. "Among other reasons, we don't want our software to break," he said, "and we have been very happy with our relationship with Apple. We're going to continue to follow Apple's lead. It's been great for us." He hoped Freeverse would be able to share their demo with Apple and that Apple would move forward with an expanded SDK that opened TV output to developers.

Hidden SDK features transform iPhone into TV gaming device

Once Apple officially publishes the Video Output API, iNavX will support it. Currently it is against the iPhone SDK license agreement to use unpublished API's.

Also I would bet the iPhone battery life would be greatly diminished when the video out is enabled.