Join Richard Harrington for an in-depth discussion in this video Running a presentation from an iPad to a television via HDMI, part of Keynote 6: Delivering Presentations.
Earlier, I showed you how to connect a laptop to a data projector using one of the adapters from Apple. Remember, there are adapters for both the Lightning connector and for using the older dock connector. You'll need the one that matches your machine. The two connection types that are available are VGA and HDMI. If you want to connect to the television, make sure you get the Lightning to HDMI adapter, and then simply plug the pieces in. Using this adapter also allows you to connect the Lightning cable for power. By connecting power, you'll ensure that the device is going to remain powered for the presentation.
Driving the external display will use up more of the battery power than simply powering the screen. because essentially, you need enough graphics power to drive two devices. Once you're connected, you could turn the screen on. It should automatically recognize that it's connected to a television set. However, what's interesting is when you are first giving the presentation, the native aspect ratio of the iPad, which is not quite 16 by nine, nor is it four by three, it will send out an irregular video signal that essentially is not filling up the display.
However, if the template you've chosen is a widescreen template, when you go to full screen display, it will adjust. And you'll see now, it is sending out a larger image. Keep in mind though, it may not fill the television up edge-to-edge like the computer did. But, this is where using your remote can come in handy. You have a ratio button, or a zoom button. And you can go out of the under scan mode and step through, and you can manually dial it in or choose the zoom aspect ratio, to put that in there. And you see here, by different types of zooming, I can control how the display is filled. And nobody said you had to go edge-to-edge. But, I do like having the largest picture possible. Because the driver of the iPad is a bit different than a laptop, you may need to adjust with the remote for the TV, and experiment with the aspect ratios or the zoom settings until you get the screen full-screen. If you can't get things connected, you can go back in here and simply go to your videos collection.
I often find, by playing back a video, you can properly connect things. And sometimes, using one that has copy protection, the actual rights management, will force the HDMI cable to authenticate. Experiment with what you have, whether it be things on your camera roll or something you've rented from the iTunes store, but I find that playing back a movie is often the best way to force everything to come into sync.
- Adding presenter notes and comments
- Recording timings
- Rehearsing on an iPad
- Mastering Keynote keyboard shortcuts
- Controlling a presentation with Keynote Remote
- Presenting from a laptop, from an iPad, or with an Apple TV
- Creating a self-running slideshow
- Printing handouts
- Exporting slides as movies or graphics