Encoding Video For Mobile Devices?

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MadGeek007 writes "I am developing at 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?"pa href="http://www.facebook.com/sharer.php?u=http%3A%2F%2Fask.slashdot.org%2Fstory %2F10%2F07%2F25%2F1654219%2FEncoding-Video-For-Mobile-Devices" target="_blank" title="Share on Facebook"img src="http://a.fsdn.com/sd/facebook_icon_large.png"/a a href="http://twitter.com/home?status=Encoding+Video+For+Mobile+Devices%3F%3 A+http%3A%2F%2Fbit.ly%2FcPolP4" target="_blank" title="Share on Twitter"img src="http://a.fsdn.com/sd/twitter_icon_large.png"/a/ppa href="http://ask.slashdot.org/story/10/07/25/1654219/Encoding-Video-For-Mobile-Devices?from=rss"Read more of this story/a at Slashdot./p pa href="http://feedads.g.doubleclick.net/~at/rztVx4GPzyBPbBrVdPFRuID0OhE/0/da"img src="http://feedads.g.doubleclick.net/~at/rztVx4GPzyBPbBrVdPFRuID0OhE/0/di" border="0" ismap="true"/img/abr/ a href="http://feedads.g.doubleclick.net/~at/rztVx4GPzyBPbBrVdPFRuID0OhE/1/da"img src="http://feedads.g.doubleclick.net/~at/rztVx4GPzyBPbBrVdPFRuID0OhE/1/di" border="0" ismap="true"/img/a/pimg src="http://feeds.feedburner.com/~r/Slashdot/slashdotDevelopers/~4/6yBFJqiXGLc" height="1" width="1"/

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