The good news: self-encoded videos of any resolution will play back through the HDMI Adapter, as will most iTunes purchased videos in either HD or SD resolution. What that means is that an iPad, iPhone 4, or iPod touch 4G can output 1280x720 “HD” videos—or lower-quality ones—directly through the Adapter to a high-definition television set or monitor, with the immediacy of pressing a play button once the Adapter is connected.…