To make it easy to prepare video for various devices, there are export format presets you can use:
iPod Small
Each preset represents a certain resolution and bitrate, along with other characteristics of H.264 video.
iPod Small
iPhone
iPod Best
Apple TV
Sony PSP
YouTube
YouTube HD
HD 720p
HD 1080p
Each preset represents a certain resolution and bitrate, along with other characteristics of H.264 video.