It is thought to be buggy but the following patch has allowed video to be saved to the Journal
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It is thought to be buggy but the following patch has allowed video to be saved to the Journal. Open Terminal and change to directory /home/olpc/Activities/Screencast.activity and replace the file Pippy_app.py with [http://www.box.net/shared/t38mhmee8j this file] (renamed to Pippy_app.py)
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(it would be a good idea to backup the existing file first, eg mv Pippy_app.py Pippy_app.bak)