I presented on this topic this morning (May 21, 2013) at Streaming Media East in Manhattan. Here’s the summary:
This session starts by detailing the playback specs for all iDevices, old and new. Then you’ll learn the strategies used by prominent iTunes publishers to serve the complete range of installed iDevices. Next, the seminar switches to cellular wireless delivery, with a technical description of Apple’s HTTP Live Streaming (HLS), including recommendations for the number of streams and Apple’s encoding parameters. You’ll walk away knowing how to encode for both iTunes and mobile delivery to iOS and compatible devices.
You can download the presentation below.