This is a presentation I gave at Streaming Media East 2011 on Encoding for iDevices.
How To: Encoding Video for iDevices
This seminar starts by detailing the playback specs for all iDevices, old and new. Then, it shares 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, including recommendations for the number of streams and Apple’s encoding parameters. The seminar concludes with a review of encoding options for HTTP Live Streaming and techniques for serving multiple target platforms such as Flash and iDevices with one set of encoded H.264 files.
You can download the handouts from a link below. Note that you can view a larger size video by clicking over to StreamingMedia.com.
Note that all these materials are covered in detail in my book, Video Compression for Adobe Flash, Apple iDevices and HTML5.