Monday, October 11, 2010

How to play Khan Academy videos on XO?

UPDATE: there is many Khan Academy videos already in ogg theora video format available on and can be played directly on browse or juckbox activities available on the xo. or you can use this online service to convert youtube video into ogg (or other format) 

Basic arithmetic video lesson

The Khan Academy is a not-for-profit educational organization created and sustained by Salman Khan. With the stated mission "of providing a high quality education to anyone, anywhere", the Academy supplies a free online collection of more than 2,000 videos on mathematics, science, history, and economics.

Many of the videos are designed for children specially Arithmetic
videos, and can be watched directly on youtube or downloaded for offline viewing on the XO laptop.

  1. you can download individual videos from youtube using any youtube video downloader service like 
  2. or download the whole category of videos for offline viewing.
Unfortunately, the videos are under flv format which is a proprietary video codec uded for live streaming and is not well supported under XO, but you can still play the video using JAMedia activity (made in Uruguay, en Español).

Another alternative is to convert the video into the opensource theora codec
ffmpeg2theora tool, more informations are available on the excellent flossmanual about the subject.The advantage is you can play the video anywhere (Browse activity, Jukebox activity, and totem video player) and all software on the XO that can play videos.

Khan Academy is looking for volunteer to translate the videos into other languages to reach a wider audience translation project is here:

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