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Encoding Video For Mobile Devices? 177

MadGeek007 writes "I am developing an app for Android that will use many short (averaging 10-20 minutes) instructional videos. Unfortunately, I know next to nothing about encoding video. I'd like to use a codec that is supported by Android and iOS out-of-the-box. I need the videos to look decent on large mobile displays (IPhone 4, HTC EVO, etc.), and still be able to stream well on a good 3G connection. The sound quality is also important. With so many different display resolutions on mobile devices, do I need to encode multiple copies of the same video? Or can I get away with a one-size-fits-all video? Can anyone recommend encoding software, codecs, resolutions, and bitrates that would work best for this application?"

Thus spake the master programmer: "Time for you to leave." -- Geoffrey James, "The Tao of Programming"