在Android和iOS上播放的视频/音频编解码器设置

什么编解码器设置将生成有效的视频,以便在Android(videoView)和iOS UIWebView上播放？

Android:http: //developer.android.com/guide/appendix/media-formats.html

iOS视频(UIWebView实际上不播放视频,将它传递给另一个类):http://developer.apple.com/iphone/library/documentation/mediaplayer/reference/MPMoviePlayerController_Class/MPMoviePlayerController/MPMoviePlayerController.html#//apple_ref/DOC/UID/TP40006953

和iOS音频:http://developer.apple.com/iphone/library/documentation/AudioVideo/Conceptual/MultimediaPG/UsingAudio/UsingAudio.html#//apple_ref/doc/uid/TP40009767-CH2-SW33